CN100373091C - Lever and floating steam trap of balanced and two-valve seat - Google Patents
Lever and floating steam trap of balanced and two-valve seat Download PDFInfo
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- CN100373091C CN100373091C CNB2005100815959A CN200510081595A CN100373091C CN 100373091 C CN100373091 C CN 100373091C CN B2005100815959 A CNB2005100815959 A CN B2005100815959A CN 200510081595 A CN200510081595 A CN 200510081595A CN 100373091 C CN100373091 C CN 100373091C
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Abstract
This invention relates to a kind of bivalve seat stop type level float steam trap. It includes float ball, level, pin shaft, pin, connecting bar, valve stem, upper and lower spools, upper and lower spool locating blocks, upper and lower valve seats, shim, nut, connecting head, connecting pin and level support. One end of level connects to float ball, the other end connects to the upper end of pin and connecting bar. Level and pin shaft are connected and are supported on the level support. The level support is arranged above the upper level seat. The lower end of connecting rod is connected to connecting head through connecting pin. The shim, upper spool and upper spool-locating block are all capped on the upside of valve stem. The upper spool is in the upper valve seat and connects to the nut and lower conical surface of the upper valve seat. The connecting head connects to the top of valve stem. The adjustable underside of valve stem inserts into lower spool and lower spool locating block. The lower spool is in the lower valve seat and connects to the lower conical surface of the lower valve seat.
Description
Technical field
The present invention relates to a kind of Automatic steam trap Trap, especially relate to a kind of bivalve seat cut-off type lever float ball type steam drain valve.
Background technique
Existing Automatic steam trap Trap has mechanical-type, heat static force type and heat power type etc.Common cut-off type lever float ball type steam drain valve adopts the conical surface sealing, and two kinds of mode of structure of single valve seat and bivalve seat are generally arranged.Adopt the comparatively simple by its structure of plough lever float ball type steam drain valve of single valve stand structure, folk prescription is to pressurized when still working, and when opening, it is subjected to the Zhi area big, thereby opening resistance is big, only is suitable for the lower drain valve of little discharge capacity and vapor pressure.If adopt the bivalve stand structure, owing to be provided with 2 rounds, can increase the circulation area of round, thereby increased the water displacement of drain valve significantly, and when being in closed condition, it is two good opposite that the pressure that two the spool faces up and down on the coaxial line that are positioned at bear steam is ordered, and can offset section axial pressure, therefore can reduce opening force greatly.
Existing bivalve seat lever float ball type steam drain valve, its valve seat construction are gone up the lower valve base round usually and are adopted same bore D1 as shown in Figure 1, because therefore the influence of conical surface seal width b goes up lower valve core compression area difference.Even use new valve, if sealing surface of seat width b is very narrow, an only sufficient astragal shape conical surface, at this moment the pressure reduction of going up lower valve core is smaller, but along with the growth of service time, sealed width b will increase gradually along with the increase of wearing and tearing, thereby opening force also increases thereupon, and increasing, cause the instability of drain valve performance, its functional reliability is poor., in Fig. 1, D2=D1+2b.Notification number provides a kind of piston pressure difference float bowl-type Automatic steam trap Trap for the utility model patent of CN2059956U, this valve changes existing single valve structure Open bucket steam trap into the Open bucket steam trap of double-valve structure, in the water guider of existing drain valve, increase by one group of control room of forming by control valve, piston set valve, wedge, inlet at valve is provided with decompression hole, establishes arm automatic vent hole on the aqueduct.
Summary of the invention
The present invention is intended to have stability and the relatively poor shortcoming of reliability at existing bivalve seat cut-off type lever float ball type steam drain valve, and a kind of pressure balance, stability and reliability bivalve seat cut-off type lever float ball type steam drain valve preferably is provided.For this reason, the present invention adopts the pressure balanced bivalve stand structure design of a kind of assurance.
The present invention is provided with ball float, lever, bearing pin, pin, connecting rod, valve rod, upper valve core, upper valve core positioning block, upper valve base, pad, lower valve core, lower valve core positioning block, lower valve base, nut, coupling head, attachment pegs and lever dolly.One end of lever connects with ball float, the other end of lever connects with the upper end of connecting rod with pin, lever and bearing pin are matched and be supported on the lever dolly, the bar shaft bar is located at the upper valve base top, the lower end of connecting rod is matched by attachment pegs and coupling head, pad, upper valve core and fore-telling spool positioning block are inserted in valve rod top, in last valve two paulins=the be located at upper valve base and matched with the following conical surface of upper valve base, coupling head connects the valve rod top, the stem lower portion that can adjust is inserted lower valve core and lower valve core positioning block, and it is interior and matched by the conical surface under nut and the lower valve base that lower valve core is located at lower valve base.
Preferably the aperture d of upper valve base equates that with lower valve core outside diameter d 3 the aperture d1 of lower valve base and the aperture d of upper valve base are unequal.
Compare with existing bivalve seat cut-off type lever float ball type steam drain valve, because project organization of the present invention has guaranteed that last lower valve core pressure-bearing surface diameter is equal fully.When using new valve, the last lower valve core pressurized conical surface diameter of new valve is d (referring to Fig. 3), and promptly actual compression area equates that the pressure that lower valve core bore in the assurance equates, but direction is opposite, and pressure reduction is zero.When wearing and tearing gradually after valve uses, the upper valve base sealing cone C of projection width increases, and lower valve base sealing cone projection width remains unchanged owing to the restriction of lower valve core external diameter.This moment, pressure reduction was zero because the wearing and tearing of last lower valve base do not exert an influence to last lower valve core pressure-bearing surface diameter, and pressure that last lower valve core bears equates that direction is opposite.
From above analysis as can be known, because the present invention adopts new project organization, therefore no matter be the new valve that just uses, also be to use old valve after a period of time, in its spreadable life, the vapor pressure that last lower valve core bore on the last lower valve base is equal fully, and direction is opposite, be that pressure reduction is zero, spool reaches complete equilibrium.Thereby no matter this bivalve seat lever float ball type steam drain valve is new and old, and its required opening force and the power of closing are all invariable, pressure balance, stability and good reliability, long service life.
Description of drawings
Fig. 1 is existing bivalve seat valve door schematic representation.
Fig. 2 is the structural representation of the embodiment of the invention.
Fig. 3 is the bivalve seat part-structure schematic representation of Fig. 2.
Embodiment
As Fig. 2, shown in 3, be provided with ball float 1, lever 2, bearing pin 3, pin 4, connecting rod 5, valve rod 6, upper valve core 7, upper valve core positioning block 15, upper valve base 8, pad 9, lower valve core 10, lower valve core positioning block 16, lower valve base 17, nut 11, coupling head 12, attachment pegs 13 and lever dolly 14.One end of lever 2 connects with ball float 1, the other end of lever 2 connects with the upper end of connecting rod 5 with pin 4, lever 2 and bearing pin 3 are matched and be supported on the lever dolly 14, lever dolly 14 is located at upper valve base 18 tops, the lower end of connecting rod 5 is matched by attachment pegs 13 and coupling head 12, pad 9, upper valve core 7 and upper valve core positioning block 15 are inserted in valve rod 6 tops, it is interior and matched with the following conical surface of upper valve base 8 that upper valve core 7 is located at upper valve base 8, coupling head 12 connects valve rod 6 tops, lower valve core 10 and lower valve core positioning block 16 are inserted in the bottom of the valve rod 6 that can adjust, and it is interior and matched with the following conical surface of lower valve base 17 by nut 11 that lower valve core 10 is located at lower valve base 17.
In the bivalve seat part-structure detail drawing of the embodiment of the invention that Fig. 3 provides, d is the aperture of upper valve base 8, and its size equals the outside diameter d 3 of lower valve core 10.C is the vertical projection width of lower valve base 17 sealing cones, the aperture d1 (d1=d-2C) of lower valve base 18 and the aperture d of upper valve base 8 are unequal, promptly reach complete or approximate balance by unequal opening force and the power of closing that spool is born in the aperture of last lower valve base.Because last lower valve core is being subjected to vapor pressure to do the time spent, its pressure-bearing circle effective diameter equates, is d, the influence that the pressure-bearing diameter is not changed by the sealing cone width.Therefore the pressure difference that goes up lower valve core is null value before and after wearing and tearing, can reach complete equilibrium.
Claims (2)
1. a lever and floating steam trap of balanced and two-valve seat is characterized in that being provided with ball float, lever, bearing pin, pin, connecting rod, valve rod, upper valve core, upper valve core positioning block, upper valve base, pad, lower valve core, lower valve core positioning block, lower valve base, nut, coupling head, attachment pegs and lever dolly; One end of lever connects with ball float, the other end of lever connects with the upper end of connecting rod with pin, lever and bearing pin are matched and be supported on the lever dolly, lever dolly is located at the upper valve base top, the lower end of connecting rod is matched by attachment pegs and coupling head, pad, upper valve core and upper valve core positioning block are inserted in valve rod top, it is interior and matched by the following conical surface of nut and upper valve base that upper valve core is located at upper valve base, coupling head connects the valve rod top, the stem lower portion that can adjust is inserted lower valve core and lower valve core positioning block, lower valve core be located in the lower valve base and with lower valve base under the conical surface matched, the aperture of upper valve base equates with the lower valve core external diameter.
2. a kind of lever and floating steam trap of balanced and two-valve seat as claimed in claim 1 is characterized in that the aperture of the aperture of lower valve base and upper valve base is unequal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100815959A CN100373091C (en) | 2005-07-15 | 2005-07-15 | Lever and floating steam trap of balanced and two-valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100815959A CN100373091C (en) | 2005-07-15 | 2005-07-15 | Lever and floating steam trap of balanced and two-valve seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1896581A CN1896581A (en) | 2007-01-17 |
| CN100373091C true CN100373091C (en) | 2008-03-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100815959A Active CN100373091C (en) | 2005-07-15 | 2005-07-15 | Lever and floating steam trap of balanced and two-valve seat |
Country Status (1)
| Country | Link |
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| CN (1) | CN100373091C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021229465A1 (en) * | 2020-05-12 | 2021-11-18 | Forbes Marshall Private Limited | A miniature steam trap |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283571B (en) * | 2020-11-16 | 2024-06-14 | 常州艾肯智造科技有限公司 | Floating ball type drain valve rod and double-valve core assembly |
| CN113007588B (en) * | 2021-03-29 | 2022-03-25 | 艾肯（江苏）工业技术有限公司 | Self-centering floating ball trap |
| CN114962972A (en) * | 2021-10-28 | 2022-08-30 | 银球节能工程有限公司 | Ceramic balance double-valve-core natural gas drain valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059956U (en) * | 1989-12-30 | 1990-08-01 | 江西省机械工业设计研究院 | Piston pressure-difference float type steam drain valve |
| JPH05296396A (en) * | 1992-04-15 | 1993-11-09 | Tlv Co Ltd | Condensed water draining device |
| JPH07286674A (en) * | 1994-04-15 | 1995-10-31 | Tlv Co Ltd | Double seat valve |
| US5655888A (en) * | 1994-10-14 | 1997-08-12 | Tlv Co., Ltd. | Pump and combination pump and trap with snap-over mechanism and double-seal outlet valve |
| CN2816559Y (en) * | 2005-04-25 | 2006-09-13 | 洪有福 | Balanced double-valve-seat floating-ball steam trap |
-
2005
- 2005-07-15 CN CNB2005100815959A patent/CN100373091C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2059956U (en) * | 1989-12-30 | 1990-08-01 | 江西省机械工业设计研究院 | Piston pressure-difference float type steam drain valve |
| JPH05296396A (en) * | 1992-04-15 | 1993-11-09 | Tlv Co Ltd | Condensed water draining device |
| JPH07286674A (en) * | 1994-04-15 | 1995-10-31 | Tlv Co Ltd | Double seat valve |
| US5655888A (en) * | 1994-10-14 | 1997-08-12 | Tlv Co., Ltd. | Pump and combination pump and trap with snap-over mechanism and double-seal outlet valve |
| CN2816559Y (en) * | 2005-04-25 | 2006-09-13 | 洪有福 | Balanced double-valve-seat floating-ball steam trap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021229465A1 (en) * | 2020-05-12 | 2021-11-18 | Forbes Marshall Private Limited | A miniature steam trap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1896581A (en) | 2007-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Quanzhou City British Overseas Valve Co., Ltd. Assignor: Hong Youfu Contract fulfillment period: 2008.8.18 to 2013.8.17 contract change Contract record no.: 2009351000126 Denomination of invention: Lever and floating steam trap of balanced and two-valve seat Granted publication date: 20080305 License type: General permission Record date: 20091224 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: COMMON LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.18 TO 2013.8.17; CHANGE OF CONTRACT Name of requester: QUANZHOU YINGQIAO VALVES CO., LTD Effective date: 20091224 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20070117 Assignee: Fujian City, Quanzhou Province British Overseas Chinese Valve Co., Ltd. Assignor: Hong Youfu Contract record no.: 2010350000054 Denomination of invention: Lever and floating steam trap of balanced and two-valve seat Granted publication date: 20080305 License type: Exclusive License Record date: 20100419 |