CN103574085B - A kind of adjustable type pressure relief structure for valve middle cavity - Google Patents
A kind of adjustable type pressure relief structure for valve middle cavity Download PDFInfo
- Publication number
- CN103574085B CN103574085B CN201310492424.XA CN201310492424A CN103574085B CN 103574085 B CN103574085 B CN 103574085B CN 201310492424 A CN201310492424 A CN 201310492424A CN 103574085 B CN103574085 B CN 103574085B
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- CN
- China
- Prior art keywords
- valve
- pressure
- gland
- pressure release
- releasing chamber
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- 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.)
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Links
- 210000004907 gland Anatomy 0.000 claims abstract description 43
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000006837 decompression Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- 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
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/04—Devices for relieving the pressure on the sealing faces for sliding valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of adjustable type pressure relief structure for valve middle cavity.Mainly solve the problem that existing valve lumen pressure relief effectively can not control seal degree.It is characterized in that: described stem lower portion is connected with pressure release push rod, be provided with pressure-releasing chamber in described valve plate, this pressure-releasing chamber is communicated with valve lumen; Described pressure-releasing chamber side is provided with adjustment gland, and described adjustment gland outer side surface and pressure-releasing chamber inner side surface are fitted, and regulates the middle part of gland to be provided with the through hole be connected with medium inlet; Described adjustment gland is provided with adjustment hole, and this adjustment hole is communicated with valve plate sidewall.When valve opening, realize lumen inlet medium isobaric, valve presses off safely and opens; Adjustment regulates the contact gap of gland and pressure release bar easily and effectively simultaneously, the effective seal degree controlling decompression mechanism.
Description
Technical field
The present invention relates to a kind of Valve controlling field, be specifically related to a kind of adjustable type pressure relief structure for valve middle cavity.
Background technique
Because the sealability of valve turnover both sides is excellent, the medium entered in valve lumen can be closed wherein, and under effect hot outside, the medium temperature in lumen can be made to raise, and can be gradually become hot by cold conditions by the medium of shutoff in lumen, liquid may be vaporized.Gas undergoes rapid expansion, because middle cavity volume cannot increase, causes cavity pressure in valve sharply to rise, and to make in valve cavity pressure at double or times over nominal pressure.The lighter affects the normal unlatching of valve, and serious meeting makes the pressure part of valve, opening tool and final controlling element impaired, therefore, usually can increase a lumen pressure relief in valve.Existing lumen pressure relief without adjustable apparatus, thus effectively can not control the seal degree of decompression mechanism.
Summary of the invention
In order to overcome the deficiency of background technique, the invention provides a kind of adjustable type pressure relief structure for valve middle cavity, mainly solving the problem that existing valve lumen pressure relief effectively can not control seal degree.
The technical solution adopted in the present invention is: a kind of adjustable type pressure relief structure for valve middle cavity, comprise valve rod, and the valve plate to be connected with valve rod, described valve plate is between medium inlet and media outlet, described valve plate top is provided with valve lumen, described stem lower portion is connected with pressure release push rod, pressure-releasing chamber is provided with in described valve plate, this pressure-releasing chamber is communicated with valve lumen, described pressure release push rod bottom is arranged with the pressure release bar matched with this pressure-releasing chamber, and this pressure release bar becomes vertical relation with pressure release push rod; Described pressure-releasing chamber side is provided with adjustment gland, this adjustment gland one side end is affixed on valve plate sidewall, fit in end side and pressure release bar one end, described adjustment gland outer side surface and pressure-releasing chamber inner side surface are fitted, and regulate the middle part of gland to be provided with the through hole be connected with medium inlet; Described adjustment gland is provided with adjustment hole, and this adjustment hole is communicated with valve plate sidewall.
Described pressure release bar is taper with the one end regulating gland to fit, and regulates the corresponding one end of gland to be the funnel shape of working in coordination; Described adjustment gland is also provided with valve seat, and described valve seat and pressure release bar offset.
Be an inclined-plane bottom described pressure release push rod, described inclined-plane is provided with the attachment hole that can pass for pressure release bar.
Described adjustment hole is tapped hole, and described valve plate sidewall is provided with the adjusting nut closed with this corresponding threaded holes.
Stuffing box gland is provided with between described pressure release bar and pressure-releasing chamber; O RunddichtringO is also provided with between described adjustment gland and pressure-releasing chamber.
The invention has the beneficial effects as follows: owing to taking technique scheme, when valve opening, realize lumen inlet medium isobaric, valve presses off safely and opens; Adjustment regulates the contact gap of gland and pressure release bar easily and effectively simultaneously, the effective seal degree controlling decompression mechanism.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is A place enlarged view in Fig. 1.
In figure 1, valve rod; 2, valve plate; 3, valve lumen; 4, pressure release push rod; 5, pressure-releasing chamber; 6, pressure release bar; 7, gland is regulated; 8, adjustment hole; 9, valve seat; 10, stuffing box gland; 11, O RunddichtringO.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is further illustrated:
As shown in Figure 1 with Figure 2, a kind of adjustable type pressure relief structure for valve middle cavity, comprise valve rod 1, and the valve plate 2 to be connected with valve rod 1, described valve plate 2 is between medium inlet and media outlet, described valve plate 2 top is provided with valve lumen 3, described valve rod 1 bottom is connected with pressure release push rod 4, pressure-releasing chamber 5 is provided with in described valve plate 2, this pressure-releasing chamber 5 is communicated with valve lumen 3, described pressure release push rod 4 bottom is arranged with the pressure release bar 6 matched with this pressure-releasing chamber 5, and this pressure release bar 6 and pressure release push rod 4 one-tenth vertical relations; Described pressure-releasing chamber 5 side is provided with and regulates gland 7, this adjustment gland 7 one side end is affixed on valve plate 2 sidewall, fit in end side and pressure release bar 6 one end, described adjustment gland 7 outer side surface and pressure-releasing chamber 5 inner side surface are fitted, and regulate the middle part of gland 7 to be provided with the through hole be connected with medium inlet; Described adjustment gland 7 is provided with adjustment hole 8, and this adjustment hole 8 is communicated with valve plate 2 sidewall.
Its working principle: valve rod 1 upwards axially moves in certain stroke when valve opening, valve rod first drives pressure release push rod 4, then pressure release push rod 4 exits the compression to pressure release bar 6 under the effect of valve rod 1, pressure release bar 6 is separated with adjustment gland 7 and both opens lumen 3 pressure release under the effect of pressure release push rod 4, make lumen 3 inner high voltage medium (liquid or gas) by the endoporus of valve plate 2, be excreted to medium inlet place, isobaric to realize inlet's medium, valve presses off safely and opens.The contact gap regulating gland 7 and pressure release bar 6 can be adjusted easily and effectively by adjustment hole 8, the seal degree of effective control decompression mechanism, during Open valve, it contains two processes, first open decompression mechanism in order, bleed high pressure and then pull-up spool open valve, even if valve lumen 3 is full of high-pressure medium and also can guarantees that valve is normally opened like this.In lateral tube, bleed high pressure medium is not only safe but also free from environmental pollution again.
Described pressure release bar 6 is taper with the one end regulating gland 7 to fit, and regulates the corresponding one end of gland 7 to be the funnel shape of working in coordination; Described adjustment gland 7 is also provided with valve seat 9, and described valve seat 9 offsets with pressure release bar 6.The taper of working in coordination like this and funnel shape can make pressure release bar 6 and regulate the gluing, sealing effect between gland 7 better, make it to be less likely to occur when closedown to leak.
Be an inclined-plane bottom described pressure release push rod 4, described inclined-plane is provided with the attachment hole that can pass for pressure release bar 6.Such setting allows pressure release push rod 4 better drive pressure release bar 6 and to regulate being separated of gland 7.
Described adjustment hole 8 is tapped hole, and described valve plate 2 sidewall is provided with the adjusting nut closed with this corresponding threaded holes.Directly can certainly be regulated the contact gap of gland 7 and pressure release bar 6 by adjustment hole 8 adjustment, the preferred adjusting nut of the present invention.
Stuffing box gland 10 is provided with between described pressure release bar 6 and pressure-releasing chamber 5; O RunddichtringO 11 is also provided with between described adjustment gland 7 and pressure-releasing chamber 5.Maximum sealing effect can be ensured like this, leakage phenomenon not occur.
Every technician's notice: although the present invention describes according to above-mentioned embodiment, invention thought of the present invention is not limited in this invention, and the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (5)
1. an adjustable type pressure relief structure for valve middle cavity, comprise valve rod (1), and the valve plate (2) to be connected with valve rod (1), described valve plate (2) is between medium inlet and media outlet, described valve plate (2) top is provided with valve lumen (3), it is characterized in that: described valve rod (1) bottom is connected with pressure release push rod (4), pressure-releasing chamber (5) is provided with in described valve plate (2), this pressure-releasing chamber (5) is communicated with valve lumen (3), described pressure release push rod (4) bottom is arranged with the pressure release bar (6) matched with this pressure-releasing chamber (5), and this pressure release bar (6) becomes vertical relation with pressure release push rod (4), described pressure-releasing chamber (5) side is provided with and regulates gland (7), this adjustment gland (7) one side end is affixed on valve plate (2) sidewall, fit in end side and pressure release bar (6) one end, described adjustment gland (7) outer side surface and pressure-releasing chamber (5) inner side surface are fitted, and regulate the middle part of gland (7) to be provided with the through hole be connected with medium inlet, described adjustment gland (7) is provided with adjustment hole (8), and this adjustment hole (8) is communicated with valve plate (2) sidewall.
2. a kind of adjustable type pressure relief structure for valve middle cavity according to claim 1, it is characterized in that: described pressure release bar (6) is taper with the one end regulating gland (7) to fit, regulate the corresponding one end of gland (7) to be the funnel shape matched with the tapered end of pressure release bar; Described adjustment gland (7) is also provided with valve seat (9), and described valve seat (9) and pressure release bar (6) offset.
3. a kind of adjustable type pressure relief structure for valve middle cavity according to claim 1 and 2, is characterized in that: described pressure release push rod (4) bottom is an inclined-plane, and described inclined-plane is provided with the attachment hole that can pass for pressure release bar (6).
4. a kind of adjustable type pressure relief structure for valve middle cavity according to claim 1 and 2, is characterized in that: described adjustment hole (8) is tapped hole, and described valve plate (2) sidewall is provided with the adjusting nut closed with this corresponding threaded holes.
5. a kind of adjustable type pressure relief structure for valve middle cavity according to claim 1, is characterized in that: be provided with stuffing box gland (10) between described pressure release bar (6) and pressure-releasing chamber (5); O RunddichtringO (11) is also provided with between described adjustment gland (7) and pressure-releasing chamber (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310492424.XA CN103574085B (en) | 2013-10-17 | 2013-10-17 | A kind of adjustable type pressure relief structure for valve middle cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310492424.XA CN103574085B (en) | 2013-10-17 | 2013-10-17 | A kind of adjustable type pressure relief structure for valve middle cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103574085A CN103574085A (en) | 2014-02-12 |
| CN103574085B true CN103574085B (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310492424.XA Active CN103574085B (en) | 2013-10-17 | 2013-10-17 | A kind of adjustable type pressure relief structure for valve middle cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103574085B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565411A (en) * | 2014-12-19 | 2015-04-29 | 成都迅德科技有限公司 | Flat gate valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4483509A (en) * | 1982-06-21 | 1984-11-20 | Lewcock Ronald B | Guillotine valve assembly |
| CN2077064U (en) * | 1990-07-21 | 1991-05-15 | 温州市防爆电器元件厂 | Fast shearing-off sluice valve |
| CN1544836A (en) * | 2003-11-28 | 2004-11-10 | 张国衡 | Column and cone piston type pipe control energy-saving valve |
| CN201162878Y (en) * | 2008-03-14 | 2008-12-10 | 上海一诺仪表有限公司 | High pressure self-control valve |
| CN203098915U (en) * | 2012-12-27 | 2013-07-31 | 安徽铜陵科力阀门有限责任公司 | Valve convenient to open and close |
-
2013
- 2013-10-17 CN CN201310492424.XA patent/CN103574085B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4483509A (en) * | 1982-06-21 | 1984-11-20 | Lewcock Ronald B | Guillotine valve assembly |
| CN2077064U (en) * | 1990-07-21 | 1991-05-15 | 温州市防爆电器元件厂 | Fast shearing-off sluice valve |
| CN1544836A (en) * | 2003-11-28 | 2004-11-10 | 张国衡 | Column and cone piston type pipe control energy-saving valve |
| CN201162878Y (en) * | 2008-03-14 | 2008-12-10 | 上海一诺仪表有限公司 | High pressure self-control valve |
| CN203098915U (en) * | 2012-12-27 | 2013-07-31 | 安徽铜陵科力阀门有限责任公司 | Valve convenient to open and close |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103574085A (en) | 2014-02-12 |
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Effective date of registration: 20240604 Address after: 325000 No.3, XINER Road, Puzhou street, Longwan District, Wenzhou City, Zhejiang Province Patentee after: ZHEJIANG TINGYU FLUID EQUIPMENT Co.,Ltd. Country or region after: China Address before: 325000, No. 109 Gao'er Road, Wenzhou City, Zhejiang Province Patentee before: TING-YU GROUP Co.,Ltd. Country or region before: China |