CN202252058U - Two-way sealing structure for sleeve of sleeve adjusting valve - Google Patents
Two-way sealing structure for sleeve of sleeve adjusting valve Download PDFInfo
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- CN202252058U CN202252058U CN2011203516254U CN201120351625U CN202252058U CN 202252058 U CN202252058 U CN 202252058U CN 2011203516254 U CN2011203516254 U CN 2011203516254U CN 201120351625 U CN201120351625 U CN 201120351625U CN 202252058 U CN202252058 U CN 202252058U
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Abstract
The utility model discloses a two-way sealing structure for a sleeve of a sleeve adjusting valve, which comprises a valve body The valve body comprises an upper sleeve and a lower sleeve which are arranged in the valve body and are connected with each other, a valve core arranged in the upper sleeve and the lower sleeve and can move relatively to the upper sleeve and the lower sleeve, a first valve cavity and a second valve cavity; one end of the valve core is connected with a valve rod which is positioned in an upper cavity enclosed by the inner wall of the upper sleeve; the other end of the valve core is internally provided with a lower cavity which is connected with the upper cavity by a balance hole arranged on the top of the valve core; the other end of the lower cavity is connected with the first valve cavity; the upper cavity is also connected with a first gap arranged between the valve core and the upper sleeve; the side wall of the lower sleeve is provided with a throttling window; the outer side of the throttling window is connected with the second valve cavity; the inner side of the throttling window is connected with a second gap arranged between the valve core and the lower sleeve; the inner wall of the upper sleeve is also provided with a groove which is internally provided with a sealing ring; the sealing ring is provided with a first groove and a second groove; the first groove is connected with the first gas; and the second groove is connected with the second gap. The two-way sealing structure for the sleeve of the sleeve adjusting valve is capable of enhancing the sealing performance of the sleeve adjusting valve and improving a leakage level sleeve of the adjusting valve.
Description
Technical field
The utility model relates to a kind of industrial process control valve, and the sleeve that relates to a kind of sleeve adjusting valve is specifically used the two way sealed structure.
Background technique
The high pressure sleeve adjusting valve is made up of telescoping valve and pneumatic actuator, and telescoping valve is connected through support with pneumatic actuator.In the existing technology, see Fig. 1, sleeve adopts the one-way sealing structure, promptly only offers a groove on the seal ring 70, and this groove and lower sleeve 30 communicate with gap between the spool 50, but the sealing effect of sealing structure is not fine.When medium is inwardly mobile from the throttling window of lower sleeve 30 sidewalls; The action of hydraulic force that medium differential pressure forms outwards struts the ring wall of seal ring in the groove of seal ring, makes ring wall be close to upper bush 40 and spool 50; So seal pressure is big, can play good seal action.But during the medium reverse flow; The hydraulic coupling that medium differential pressure forms acts on the outer wall of seal ring groove through the gap between spool and the upper bush; Seal ring is flattened, the specific pressure between seal ring and spool, seal ring and the sleeve is reduced, so just increased the vent flow of modulating valve; And along with the seal wears aggravation, vent flow is increasing.
The model utility content
The utility model technical problem to be solved provides a kind of sleeve of sleeve adjusting valve and uses the two way sealed structure, and this structure can strengthen the sealing of sleeve adjusting valve, improves the leakage class of modulating valve.
For solving the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of sleeve of sleeve adjusting valve is used the two way sealed structure, comprises valve body, comprises in the said valve body fixedly being located in the valve body and the upper bush and the lower sleeve that are connected; The spool of being located in upper bush, the lower sleeve and can moving with respect to upper bush, lower sleeve, and first valve pocket and second valve pocket, said spool one end connects valve rod; Valve rod is arranged in the epicoele that said upper bush inwall surrounds, and in the spool the other end cavity of resorption is arranged, and said cavity of resorption one end is connected with epicoele through the equalizing orifice that the spool top is provided with; The other end of cavity of resorption is connected with first valve pocket; Said epicoele also and spool be connected with first gap between the upper bush, have the throttling window on the sidewall of said lower sleeve, this throttling window outside is connected with second valve pocket; Inboard and spool are connected with second gap between the lower sleeve; Also have groove on the inwall of said upper bush, be provided with seal ring in the said groove, said seal ring is provided with first groove and second groove; Said first groove is connected with first gap, and said second groove is connected with second gap.
Further, be equipped with elastic element in said first groove and second groove.
Preferably, said elastic element is cylindrical helical spring or O shape spring ring.
Further, seal ring (7) one ends in the groove (42) on the said sleeve (4) are connected with upper bush (4), and the other end is connected with lower sleeve (3).
Preferably, said lower sleeve is fixed on the valve seat, and said valve seat is located in the valve body.
Further, be provided with pad between said valve body and the valve seat.
Further, said valve seat is provided with first inclined-plane, and said valve core outer surface is provided with second inclined-plane, fits in first inclined-plane and second inclined-plane.
Further, said first valve pocket is positioned at the spool below.
Preferably, said second valve pocket is positioned at the top of first valve pocket.
The sleeve of this sleeve adjusting valve has improved the leakage class of modulating valve with the two way sealed structure; No matter medium low in and high out or high in and low out; The also pressure that pressure reduction forms always has a side to act in the groove; The ring wall of seal ring is strutted, guarantee the sealing of modulating valve, and then solve the big problem of high pressure sleeve adjusting valve leakage rate.
Description of drawings
Fig. 1 is the structural representation of existing technology mesohigh sleeve adjusting valve sealing configuration.
Fig. 2 is the structural representation of the sleeve of the utility model sleeve adjusting valve with the two way sealed structure.
Fig. 3 is an A circle enlarged view among Fig. 2.
Fig. 4 is the plan view of the sleeve of the utility model sleeve adjusting valve with valve rod spool in the two way sealed structure.
Fig. 5 is the structural representation of the utility model high pressure sleeve adjusting valve.
The schematic representation of pressure everywhere when Fig. 6 is the high in and low out of the utility model high pressure sleeve adjusting valve medium.
The schematic representation of pressure everywhere when Fig. 7 is the low in and high out of the utility model high pressure sleeve adjusting valve medium.
Embodiment
Fig. 2 is the structural representation of the sleeve of the utility model sleeve adjusting valve with the two way sealed structure.From figure, can know; The sleeve of this sleeve adjusting valve comprises valve body 1 with the two way sealed structure, comprises the upper bush 4 and lower sleeve 3 that fixedly are located in the valve body 1 and are connected in the said valve body 1, the spool 5 of being located in upper bush 4, the lower sleeve 3 and can moving with respect to upper bush 4, lower sleeve 3; And first valve pocket 11 and second valve pocket 12; Preferably, first valve pocket 11 is positioned at the below of spool 5, and second valve pocket 12 is positioned at the top of first valve pocket 11.Said spool 5 one ends connect valve rod 6, and valve rod 6 is arranged in the epicoele 41 that said upper bush 4 inwalls surround, and spool 5 the other ends are provided with cavity of resorption 51; Said cavity of resorption 51 1 ends are provided with equalizing orifice 52 through spool 5 tops and are connected with epicoele 41, see Fig. 4, and the other end of cavity of resorption 51 is connected with first valve pocket 11; Said epicoele 41 also and spool 5 be connected with first gap 45 between the upper bush 4; Have throttling window 31 on the sidewall of said lower sleeve 3, these throttling window 31 outsides are connected with second valve pocket 12, and inboard and spool 5 are connected with second gap 35 between the lower sleeve 3; Also have groove 42 on the inwall of said upper bush 4; Be provided with seal ring 7 in the said groove 42, an end of seal ring 7 is connected with upper bush 4, and the other end is connected with lower sleeve 3.Said seal ring 7 is provided with first groove 71 and second groove 72, and said first groove 71 is connected with first gap 45, and said second groove 72 is connected with second gap 35.See Fig. 3, be equipped with elastic element 8 in first groove 71 and second groove 72, preferably, elastic element 8 is cylindrical helical spring or O shape spring ring.Cylindrical helical spring 8 in first groove 71 and second groove 72 struts first groove 71 and second groove 72; Initial sealing power is provided; When spool 5 is moved up and down in upper bush 4 and lower sleeve 3; The cutting edge of first groove 71 and second groove 72 can touch spool 5 outer walls and upper bush 4 inwalls tightly, forms initial sealing.Lower sleeve 3 is fixed on the valve seat 2, and valve seat is located in the valve body 1, preferably, also is provided with pad 9 between valve body 1 and the valve seat 2.
Spool 5 outer walls will carry out grinding, make its surface roughness reach 0.8, have good motive sealing property when spool 5 relative upper bushes 4 are done relative movement with lower sleeve 3 like this, thereby guarantee higher leakage class.Said valve seat 2 is provided with first inclined-plane 21, and said spool 5 outer surfaces are provided with second inclined-plane 53, when sleeve adjusting valve is closed, see Fig. 5, and fitting in first inclined-plane 21 and second inclined-plane 53, guarantees the sealing of sleeve adjusting valve.
Trims such as the valve body 1 of sleeve adjusting valve, spool 5, upper bush 4 and lower sleeve 3 adopt the part of standard cartridges valve, to improve part generalization degree between the series product.See Fig. 5, valve body 1 is spirally connected with valve gap 10, and support 15 is connected valve gap 10 with pneumatic actuator 13, and preferably, pneumatic actuator 13 is the smart miniature pneumatic diaphragm actuators of many springs, also is provided with pad 14 between said valve gap 10 and the valve body 1.
During practical implementation, valve seat 2, pad 9 is put into valve body 1, is pressed in valve seat 2 on the pad 9, puts into lower sleeve 3 then.Cylindrical helical spring 8 is embedded in first groove 71 and second groove 72 of seal ring 7, be embedded into the seal ring that is embedded with cylindrical helical spring 87 in the groove 42 of upper bush 4 again, be placed on upper bush 4 on the lower sleeve 3; An end of seal ring 7 is blocked by lower sleeve 3 like this; Put into spool 5 and valve rod 6 then, put into pad 14 again, be connected valve gap 10 with valve body 1 with screw bolt and nut; Insert filler in the valve gap 10 and compress with gland, valve assembly is just assembled and has been accomplished like this.With support 15 pneumatic actuator 13 is linked to each other with valve assembly at last, so far, accomplished the assembling of whole high pressure sleeve adjusting valve.
When the medium high in and low out, promptly flow into the throttling window 31 of lower sleeve 3 from second valve pocket 12 of sleeve adjusting valve, from first valve pocket 11, flow out again.See Fig. 6, at this moment, inlet is the pressure P of the pressure P1 at second valve pocket, 12 places greater than seal ring 7 places; The pressure P at seal ring 7 places is the pressure P2 at first valve pocket, 11 places greater than the outlet port; Medium flows in second slit 35 from the throttling window 31 of lower sleeve 3, gets in second groove 72 of seal ring 7, and then struts the ring wall at second groove, 72 places; Make the ring wall of seal ring 7 be close to the outer wall of spool 5 and the outer wall of upper bush 4, play good seal action.When the medium low in and high out, promptly flow in the cavity of resorption 51 from first valve pocket 11, flow out from second valve pocket 12 through throttling window 31 again.See Fig. 7, at this moment, inlet is the pressure P of the pressure P1 at first valve pocket, 11 places greater than seal ring 7 places; The pressure P at seal ring 7 places is the pressure P2 at second valve pocket, 12 places greater than the outlet port; Medium flows into first slit 45 from cavity of resorption 51 through spool 5 top equalizing orifices 52, gets in first groove 71 of seal ring 7, and then struts the ring wall at first groove, 71 places; Make the ring wall of seal ring 7 be close to the outer wall of spool 5 and the outer wall of upper bush 4, play good seal action.
The sleeve of the sleeve adjusting valve that the utility model relates to has solved the big problem of existing technology mesohigh sleeve leakage rate with the two way sealed structure; The two-way open recess of design on seal ring 7; No matter medium adopts anything to flow to, and the hydraulic coupling that pressure reduction forms always acts in the groove of seal ring 7, and then ring wall is strutted; Guarantee the sealing of valve, improve the leakage class of valve.
Claims (9)
1. the sleeve of a sleeve adjusting valve is used the two way sealed structure, comprises valve body (1), comprises in the said valve body (1) fixedly being located in the valve body (1) and the upper bush (4) and the lower sleeve (3) that are connected; The spool (5) of being located in upper bush (4), the lower sleeve (3) and can moving with respect to upper bush (4), lower sleeve (3); And first valve pocket (11) and second valve pocket (12), said spool (5) one ends connect valve rod (6), and valve rod (6) is arranged in the epicoele (41) that said upper bush (4) inwall surrounds; Spool (5) inside is provided with cavity of resorption (51); Said cavity of resorption (51) one ends are connected with epicoele (41) through the equalizing orifice (52) that spool (5) top is provided with, and the other end of cavity of resorption (51) is connected with first valve pocket (11), said epicoele (41) also and spool (5) be connected with first gap (45) between the upper bush (4); Have throttling window (31) on the sidewall of said lower sleeve (3); This throttling window (31) outside is connected with second valve pocket (12), and inboard and spool (5) are connected with second gap (35) between the lower sleeve (3), it is characterized in that: also have groove (42) on the inwall of said upper bush (4); Be provided with seal ring (7) in the said groove (42); Said seal ring (7) is provided with first groove (71) and second groove (72), and said first groove (71) is connected with first gap (45), and said second groove (72) is connected with second gap (35).
2. the sleeve of sleeve adjusting valve according to claim 1 is used the two way sealed structure, it is characterized in that: be equipped with elastic element (8) in said first groove (71) and second groove (72).
3. the sleeve of sleeve adjusting valve according to claim 2 is used the two way sealed structure, it is characterized in that: said elastic element (8) is cylindrical helical spring or O shape spring ring.
4. the sleeve of sleeve adjusting valve according to claim 1 is used the two way sealed structure, it is characterized in that: seal ring (7) one ends in the groove (42) on the said upper bush (4) are connected with upper bush (4), and the other end is connected with lower sleeve (3).
5. the sleeve of sleeve adjusting valve according to claim 1 is used the two way sealed structure, it is characterized in that: said lower sleeve (3) is fixed on the valve seat (2), and said valve seat (2) is located in the valve body (1).
6. the sleeve of sleeve adjusting valve according to claim 1 is used the two way sealed structure, it is characterized in that: be provided with pad (9) between said valve body (1) and the valve seat (2).
7. the sleeve of sleeve adjusting valve according to claim 1 is used the two way sealed structure; It is characterized in that: said valve seat (2) is provided with first inclined-plane (21); Said spool (5) outer surface is provided with second inclined-plane (53), and fit with second inclined-plane (53) first inclined-plane (21).
8. the sleeve of sleeve adjusting valve according to claim 1 is used the two way sealed structure, it is characterized in that: said first valve pocket (11) is positioned at spool (5) below.
9. the sleeve of sleeve adjusting valve according to claim 1 is used the two way sealed structure, it is characterized in that: said second valve pocket (12) is positioned at the top of first valve pocket (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203516254U CN202252058U (en) | 2011-09-19 | 2011-09-19 | Two-way sealing structure for sleeve of sleeve adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203516254U CN202252058U (en) | 2011-09-19 | 2011-09-19 | Two-way sealing structure for sleeve of sleeve adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252058U true CN202252058U (en) | 2012-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203516254U Expired - Fee Related CN202252058U (en) | 2011-09-19 | 2011-09-19 | Two-way sealing structure for sleeve of sleeve adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252058U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500771A (en) * | 2014-05-26 | 2015-04-08 | 襄阳航生石化环保设备有限公司 | Self-balancing decoking control valve |
| CN104676012A (en) * | 2015-02-10 | 2015-06-03 | 无锡智能自控工程股份有限公司 | Bilateral balanced sealing ring component for sleeve valve |
-
2011
- 2011-09-19 CN CN2011203516254U patent/CN202252058U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500771A (en) * | 2014-05-26 | 2015-04-08 | 襄阳航生石化环保设备有限公司 | Self-balancing decoking control valve |
| CN104676012A (en) * | 2015-02-10 | 2015-06-03 | 无锡智能自控工程股份有限公司 | Bilateral balanced sealing ring component for sleeve valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20150919 |
|
| EXPY | Termination of patent right or utility model |