CN203035966U - Though single-seat adjusting valve - Google Patents
Though single-seat adjusting valve Download PDFInfo
- Publication number
- CN203035966U CN203035966U CN2012206027269U CN201220602726U CN203035966U CN 203035966 U CN203035966 U CN 203035966U CN 2012206027269 U CN2012206027269 U CN 2012206027269U CN 201220602726 U CN201220602726 U CN 201220602726U CN 203035966 U CN203035966 U CN 203035966U
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- China
- Prior art keywords
- valve
- seat
- filler
- cage
- high pressure
- 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 - Lifetime
Links
- 239000000945 filler Substances 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 10
- 210000004907 gland Anatomy 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a through single-seat adjusting valve which comprises a valve body and a valve cover. An inner hole is arranged in the valve cover, and a lower guiding ring, a packing assembly, a packing isolating sleeve, an isolating ring, a packing press sleeve and a press board are sequentially arranged in the inner hole from bottom to top. A disc spring is arranged on the press board and connected on the upper end of the valve cover through studs and nuts. A valve cage is arranged on the valve seat, and an inner hole is arranged in the valve cage. A valve rod is arranged in the inner holes of the valve cover and the valve cage. The through single-seat adjusting valve is characterized in that the packing assembly is divided into an upper portion and a lower portion through the packing isolating sleeve, and the packing press sleeve and the valve cage respectively guide the head end and the tail end of the valve rod to form a double-guiding structure. The through single-seat adjusting valve solves the problems that when a through single-seat adjusting valve in the prior art is used in the high-pressure difference environment, the valve rod is bent and fractured, a valve head falls off, flow regulation is unstable, packing is leaked, the valve seat is difficult to detach in maintenance and the like.
Description
Technical field
The utility model relates to a kind of direct single seat control valve, relates in particular to a kind of high pressure direct single seat control valve, belongs to technical field of valve manufacturing.
Background technique
Direct single seat control valve of the prior art uses in the High Pressure Difference environment and has following problem:
1) valve rod bending break, valve head comes off.
Because its valve rod adopts with valve head and is threaded, and valve rod is thinner, under the medium thrust, makes valve rod bending deflection easily, even rupture in bar and the attachment portion of head.Owing to reasons such as vibration cause thread looseness, valve head comes off after the long-term action.
2) Flow-rate adjustment instability
Adopt of straight-through modulating valve of the prior art gone up guide structure more, namely by guide bush led in valve rod top.Because guide bush is higher apart from valve head to the guiding position of valve rod, the guiding area is less relatively, and valve rod is easy to generate vibrations, shake when causing the medium high speed impact, influences degree of regulation.
3) packing leaking.
Only rely on one group of filler to guarantee sealing and since in the filler assembly each filler be stressed inhomogeneously, and pass filler in time and can produce stress relaxation, cause flowing medium to leak outside easily.
The difficult dismounting of valve seat when 4) keeping in repair.
In the prior art, valve body and valve seat adopt thread seal, and be impure when flowing medium, when accompanying solid particle or dust, after perhaps valve insertion gets rusty, all can cause screw thread to be stuck, and causes dismounting inconvenience.
Summary of the invention
The purpose of this utility model is to overcome the described shortcoming of background technique, and a kind of high pressure direct single seat control valve is provided, this valve have the degree of regulation height, easy to maintenance, leakage rate is little and characteristics such as long service life.
The utility model is achieved through the following technical solutions:
A kind of high pressure direct single seat control valve comprises: valve body, valve gap, and described valve body, valve cover chamber connect by bolt; Be provided with step in the valve body, valve seat is placed on the interior step of valve body; Between described valve body, the valve gap, be equipped with sealing gasket between valve body step and the valve seat; Described valve gap is provided with endoporus, and guide ring, filler assembly, filler separation sleeve, isolating ring, filler gland and pressing plate are housed down in the endoporus from top to bottom successively; Described pressing plate is provided with the dish spring, and is connected the upper end of valve gap by double-screw bolt, nut; Described valve seat is provided with valve cage, has endoporus, valve rod to place endoporus on valve gap, the valve cage on the valve cage; It is characterized in that: described filler assembly is divided into upper and lower two-part, and separates by the filler separation sleeve; Described filler gland, valve cage lead to valve rod head, end respectively, form dual-guiding structure.Described dish spring plays dynamic loading effect.
Working procedure: medium flows to lower chamber from the valve body left side, and when valve was in closed condition, valve rod compressed valve seat under the thrust of actuator, guarantees the sealing between valve rod and the contact surface of valve seat; And when valve was in opening state, valve rod moved and maintains a certain position under the drive of actuator; Medium flows into the valve body upper cavity by the annulus between valve rod and the valve seat through valve cage at this moment, flows out from the valve body right side at last.
Preferably, described valve seat is symplex structure, can two-sidedly use.
Preferably, described valve seat is provided with limited step, and effectively the distortion decrement of control valve seat sealing gasket guarantees sealing effect.
Preferably, described valve rod designs for integral type.
Preferably, the high pressure resistant difference of described valve rod and be not easy the fracture.
The utility model compared with prior art has with the next item down or multiple advantages:
1, valve rod designs for integral type, has eliminated the unreliable factor that relies on be threaded valve head and valve rod in the traditional design.Simultaneously, valve rod can bear High Pressure Difference, and valve head comes off, the accident potential of valve rod bending break thereby eliminated.Usually, valve rod is than the thick 1.5-2 of the valve rod in the traditional design times, and perhaps material is hard.
2, filler gland, valve cage lead to valve rod head, end respectively, form dual-guiding structure, overcome the deficiency that only relies on place guiding in the prior art, make valve rod action accurately, stable, the stability of Flow-rate adjustment is guaranteed in the shake that can effectively alleviate valve rod.
3, filler assembly is divided into upper and lower two-part, and is separated by the filler separation sleeve, the effect of bottom filler be with on the valve rod the major part of contact medium fluid dispose, thereby stop dirt to enter the top filler.Simultaneously, the dish spring on the pressing plate has the dynamic load effect, and the lax compensation in time to filler prevents that effectively medium from leaking outside.
4, valve seat is symplex structure, and two-sided use is simple in structure, is easy to dismounting, can save maintenance cost and time greatly.
Description of drawings
Fig. 1-1 is the sectional view of the disclosed high pressure direct single seat control valve of the utility model.
Fig. 1-2 is the phantom among Fig. 1-1.
Fig. 2 is the partial enlarged drawing among Fig. 1.
Reference numerals list: 1. 6. times guide rings of valve body 2. valve gaps, 3. valve seat 4. valve cages, 5. valve rods, 7. filler assemblies, 8. filler separation sleeves, 9. isolating rings, 10. filler glands, 11. pressing plates, 12. dish springs, 13. valve seal pads, 14. valve base sealing pads.
Fig. 3 is the structural representation of traditional direct single seat control valve.
The mark of accompanying drawing 3 tabulation: 1. valve body 2. valve gaps 3. valve rods 4. filler assemblies 5. valve seat .6. valve heads 7. guide bushs 8. filler glands.
Embodiment
A kind of embodiment below in conjunction with accompanying drawing is showed further specifies content of the present utility model:
Shown in Fig. 1-1 and 1-2, a kind of high pressure direct single seat control valve comprises: valve body 1, valve gap 2, and described valve body 1, valve gap 2 connect by bolt; Be provided with step in the valve body 1, valve seat 3 is placed on the step in the valve body 1; Between described valve body 1 and the valve gap 2, be respectively equipped with sealing gasket 13,14 between valve body 1 step and the valve seat 3; Described valve seat 3 is symplex structure, and is provided with limited step.
Described valve gap 2 is provided with endoporus, and guide ring 6, filler assembly 7, filler separation sleeve 8, isolating ring 9, filler gland 10, pressing plate 11 are housed down in the endoporus from top to bottom successively; Described filler assembly 7 is divided into upper and lower two-part, and separates by filler separation sleeve 8.Described pressing plate 11 is provided with dish spring 12, and is connected the upper end of valve gap 2 by double-screw bolt, nut, plays dynamic loading effect.
Described valve seat 3 is provided with valve cage 4, on the valve cage 4 endoporus is arranged, and valve rod 5 places the endoporus on valve gap 2, the valve cage 4; Described valve rod 5 is for integral type designs, and the thick 1.5-2 of valve rod more of the prior art doubly.Described filler gland 10, valve cage 4 lead to valve rod head, end respectively, form dual-guiding structure, can guarantee the stability of Flow-rate adjustment.
Working procedure: medium flows to lower chamber from valve body 1 left side, and when valve was in closed condition, valve rod 5 compressed valve seat 3 under the thrust of actuator, guarantees the sealing between valve rod and the contact surface of valve seat; And when valve was in opening state, valve rod 5 moved and maintains a certain position under the drive of actuator; This moment, medium passed through the annulus between valve rod 5 and the valve seat 3, flowed into the valve body upper cavities through valve cage 4, flowed out from valve body 1 right side at last.By the throttling action of annulus between valve rod 5 and the valve seat 3, come the rate-of flow in regulation valve body 1 runner.
Claims (5)
1. high pressure direct single seat control valve comprises: valve body (1), valve gap (2), and described valve body (1), valve gap (2) connect by bolt; Valve body is provided with step in (1), and valve seat (3) is placed on the interior step of valve body (1); Between described valve body (1) and the valve gap (2), be respectively equipped with sealing gasket (13), (14) between valve body (1) step and the valve seat (3); Described valve gap (2) is provided with endoporus, and guide ring (6), filler assembly (7), filler separation sleeve (8), isolating ring (9), filler gland (10), pressing plate (11) are housed down in the endoporus from top to bottom successively; Described pressing plate (11) is provided with dish spring (12), and is connected the upper end of valve gap (2) by double-screw bolt, nut; Described valve seat (3) is provided with valve cage (4), and valve cage has endoporus on (4), and valve rod (5) places the endoporus on valve gap (2), the valve cage (4); It is characterized in that: described filler assembly (7) is divided into upper and lower two-part, and separates by filler separation sleeve (8); Described filler gland (10), valve cage (4) lead to valve rod head, end respectively, form dual-guiding structure.
2. high pressure direct single seat control valve according to claim 1 is characterized in that, described valve seat is symplex structure, can two-sidedly use.
3. high pressure direct single seat control valve according to claim 1 and 2 is characterized in that, described valve seat is provided with limited step, effectively the decrement of control valve seat sealing gasket.
4. high pressure direct single seat control valve according to claim 1 is characterized in that, described valve rod designs for integral type.
5. high pressure direct single seat control valve according to claim 1 is characterized in that, the high pressure resistant difference of described valve rod and be not easy the fracture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206027269U CN203035966U (en) | 2012-11-15 | 2012-11-15 | Though single-seat adjusting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206027269U CN203035966U (en) | 2012-11-15 | 2012-11-15 | Though single-seat adjusting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035966U true CN203035966U (en) | 2013-07-03 |
Family
ID=48688095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206027269U Expired - Lifetime CN203035966U (en) | 2012-11-15 | 2012-11-15 | Though single-seat adjusting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035966U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913070A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Three-eccentricity hard sealing butterfly valve |
| CN104913107A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Flexible sealing structure for valve deck and valve rod of one-way valve |
| CN105587914A (en) * | 2016-03-14 | 2016-05-18 | 西诺威阀门控制（苏州）有限公司 | Connecting structure for valve cover and valve body |
-
2012
- 2012-11-15 CN CN2012206027269U patent/CN203035966U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104913070A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Three-eccentricity hard sealing butterfly valve |
| CN104913107A (en) * | 2015-05-25 | 2015-09-16 | 蚌埠南自仪表有限公司 | Flexible sealing structure for valve deck and valve rod of one-way valve |
| CN105587914A (en) * | 2016-03-14 | 2016-05-18 | 西诺威阀门控制（苏州）有限公司 | Connecting structure for valve cover and valve body |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |