CN204739269U - External high-pressure damping oil cylinder check valve - Google Patents
External high-pressure damping oil cylinder check valve Download PDFInfo
- Publication number
- CN204739269U CN204739269U CN201520486670.9U CN201520486670U CN204739269U CN 204739269 U CN204739269 U CN 204739269U CN 201520486670 U CN201520486670 U CN 201520486670U CN 204739269 U CN204739269 U CN 204739269U
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- Prior art keywords
- valve body
- connecting rod
- oil cylinder
- pressure damping
- valve
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- Expired - Fee Related
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- 238000013016 damping Methods 0.000 title claims abstract description 42
- 230000003139 buffering effect Effects 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses an external high-pressure damping hydro-cylinder check valve, including the valve body, be equipped with the valve clack in the valve body, the valve clack even has the pivot, and the valve body is stretched out in the pivot, the pivot is stretched out and is formed two and stretch out the end to the valve body both sides respectively, and the valve body both sides are equipped with buffer gear respectively, buffer gear includes high-pressure damping hydro-cylinder, connecting rod, balanced weight, and connecting rod one end articulates stretch out to serve, and the connecting rod other end is fixed balanced weight, the cylinder body of high-pressure damping hydro-cylinder articulates on the valve body, the piston rod of high-pressure damping hydro-cylinder articulates on the. This scheme provides an external high pressure damping hydro-cylinder check valve, respectively sets up the damping hydro-cylinder in valve body both sides, and the buffering is more steady, improves buffer gear, and the structure is more reasonable.
Description
Technical field
The utility model relates to a kind of external high pressure damping oil cylinder safety check, belongs to valve field.
Background technique
Safety check is also known as one-way valve or check valve, its effect prevents the medium in pipeline from flowing backwards, safety check of the prior art, usually flap, crotch, rocking bar is included, when closing, impact force is very large, and therefore sound is with large, also very large to the impact of sealing surface, make sealing surface wear very fast, cause shorten the working life of product.Market there are some slow closed check dampers afterwards, solved conventional check valves in use, during due to quick closedown, the problems such as the excessive caused pipe vibration of impact force.At present, domestic slow closed check damper, its slow closing device is generally arranged on valve internal, and easy especially the generation the medium in pipeline of cushion cylinder is polluted, and cushion cylinder was once lose efficacy, and whole valve is by ineffective.
Application number be 200620135936.6 utility model patent disclose a kind of slow closed check damper, this valve devises balance weight and adds oil cylinder double buffering device, open-shut device stroke is short, and when valve closing is to≤5 °, damping device starts to play a role, neither affect the quick closedown of valve, can realize again the function of Slow Close, during closedown, impact force is little, fundamentally solves pipe vibration problem, balance weight adds the external form of oil cylinder simultaneously, convenient detection and maintenance.
Application number is that the utility model patent of 201320865577.X discloses a kind of external ram buffer valve, comprise valve body, valve gap, rocking bar, flap, valve gap is arranged on valve body, valve rod is connected with flap, also comprise external cylinder buffer mechanism, external cylinder buffer mechanism comprises cushion cylinder, piston, and piston is arranged in cushion cylinder, and rocking bar and piston are connected.Said structure is provided with an external cylinder buffer mechanism outside valve body, just can allow closure of check ring time, it not direct closedown, by the buffering of piston, then Slow Close, reduce impact force during closure of check ring, not only reduce sound, reduce the impact to sealing surface simultaneously, extend working life of the present utility model, and weight linear meter and balancing weight can carry out resistance adjustment, regulate the time of safety check Slow Close, and the cooperating structure of transmission shaft and piston rod also can the driving stroke of regulating piston, realize resistance fine setting.
Although all achieve buffer function during closure of check ring in above-mentioned two patents, but still there is following problem in design in damping mechanism: although 1, can find out in the description of above-mentioned two patent accessory rights claims, specification and accompanying drawings drive the valve shaft of flap all to stretch out valve body, but be all monolateral stretching out, cushion cylinder is also all monolateral setting, although provide cost savings like this, but close easily because buffering is by force unbalance at flap, cause poorly sealed situation to occur; 2, one, the connecting rod connecting oil cylinder and valve shaft is the structure arranging curve bath, and one is arrange a transmission shaft again, such linkage mechanism complex structure, and it is very inconvenient to process, and also a lot of to the arrangement restriction of oil cylinder on valve body; Certainly another serious problems of this spline structure are that the pressure requirements of oil cylinder becomes large, larger torque all will be provided could to realize cushioning because observe two kinds of structure oil cylinders according to moment in above-mentioned patent, high to oil cylinder requirement of withstand voltage.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of external high pressure damping oil cylinder safety check, respectively arranges damping oil cylinder in valve body both sides, and buffering is more steady, improves damping mechanism, more reasonable structure.
For achieving the above object, the utility model provides following technological scheme: a kind of external high pressure damping oil cylinder safety check, comprise valve body, flap is provided with in valve body, flap is connected with rotating shaft, valve body is stretched out in rotating shaft, described rotating shaft is stretched out respectively to valve body both sides and is formed two external parts, valve body both sides are respectively equipped with damping mechanism, described damping mechanism comprises high pressure damping oil cylinder, connecting rod, balance weight, connecting rod one end is hinged on described external part, the connecting rod the other end fixes described balance weight, the cylinder body of high pressure damping oil cylinder is hinged on described valve body, the piston rod of high pressure damping oil cylinder to be hinged on connecting rod and the articulating point of piston rod between external part and balance weight.
Preferably, described balance weight is provided with jack, and described connecting rod is engaged on jack, and balance weight is provided with fastening screw trip bolt, and fastening screw trip bolt is fixed on balance weight on connecting rod, and described connecting rod is provided with positioning screwn, and positioning screwn is positioned at balance weight both sides.
Preferably, be provided with valve gap above described valve body, compress the Self-sealed lid having arch under valve gap, Self-sealed lid upper-end surface is connected with stud bolt, and the head of stud bolt stretches out valve gap and is connected with adjusting nut, and the circumferential side wall of Self-sealed lid is conflicted on valve interior wall.
Preferably, the circumferential side wall of described Self-sealed lid is provided with supporting portion, and be provided with back-up ring between described valve gap and Self-sealed lid, valve interior wall is provided with circular groove, and back-up ring is arranged on circular groove, and back-up ring inwall and abutment surfaces are conflicted.
By adopting technique scheme, because rotating shaft is provided with two external parts, when flap is closed, both sides can be subject to damping function, and close more mild, time closed, sealing surface is good, not easily leaks.Damping mechanism is different from traditional linkage mechanism, adopts a connecting rod separately, the piston rod of high pressure damping oil cylinder is connected on the body of rod of connecting rod, can reduces the arrangement of component, and cylinder force diminishes simultaneously, low to oil cylinder requirement of withstand voltage.Connecting rod can also arrange the articulating point of multiple piston rod, be hinged on diverse location according to different operating mode.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is plan view of the present utility model;
Fig. 2 is plan view of the present utility model;
Fig. 3 is the enlarged view at A place in the utility model Fig. 1;
Fig. 4 is the enlarged view at B place in the utility model Fig. 2.
Accompanying drawing illustrates: 1, valve body; 2, flap; 3, rotating shaft; 3a, external part; 4, connecting rod; 5, high pressure damping oil cylinder; 6, balance weight; 6a, jack; 7, fastening screw trip bolt; 8, positioning screwn; 9, Self-sealed lid; 9a, supporting portion; 10, valve gap; 11, back-up ring; 12, stud bolt; 13, adjusting nut; 14, seal ring; 15, o type circle.
Embodiment
A kind of external high pressure damping oil cylinder 5 safety check, comprise valve body 1, flap 2 is provided with in valve body 1, flap 2 is connected with rotating shaft 3, valve body 1 is stretched out in rotating shaft 3, rotating shaft 3 is stretched out respectively to valve body 1 both sides and is formed two external part 3a, valve body 1 both sides are respectively equipped with damping mechanism, damping mechanism comprises high pressure damping oil cylinder 5, connecting rod 4, balance weight 6, connecting rod 4 one end is hinged on external part 3a, connecting rod 4 the other end stable equilibrium weight 6, the cylinder body of high pressure damping oil cylinder 5 is hinged on described valve body 1, the piston rod of high pressure damping oil cylinder 5 to be hinged on connecting rod 4 and the articulating point of piston rod between external part 3a and balance weight 6.Because rotating shaft 3 is provided with two external part 3a, when flap 2 is closed, both sides can be subject to damping function, and close more mild, time closed, sealing surface is good, not easily leaks.Damping mechanism is different from traditional connecting rod 4 mechanism, adopts a connecting rod 4 separately, the piston rod of high pressure damping oil cylinder 5 is connected on the body of rod of connecting rod 4, can reduces the arrangement of component, and cylinder force diminishes simultaneously, low to oil cylinder requirement of withstand voltage.Connecting rod 4 can also arrange the articulating point of multiple piston rod, be hinged on diverse location according to different operating mode.
Wherein, balance weight 6 is provided with jack 6a, and connecting rod 4 is engaged on jack 6a, and balance weight 6 is provided with fastening screw trip bolt 7, and fastening screw trip bolt 7 is fixed on balance weight 6 on connecting rod 4, and connecting rod 4 is provided with positioning screwn 8, and positioning screwn 8 is positioned at balance weight 6 both sides.It is all very easy that the mounting type of this balance weight 6 mounts and dismounts, although fastening screw trip bolt 7 has been fixed on balance weight 6 on connecting rod 4, but in order to prevent unexpected generation, connecting rod 4 arranges positioning screwn 8 again, even if fastening screw trip bolt 7 lost efficacy, positioning screwn 8 still can be limited in balance weight 6 on connecting rod 4, avoids balance weight 6 to throw away from connecting rod 4, causes unexpected generation.
Wherein, be provided with valve gap 10 above valve body 1, valve gap compresses the Self-sealed lid 9 having arch 10 times, and Self-sealed lid 9 upper-end surface is connected with stud bolt 12, the head of stud bolt 12 stretches out valve gap 10 and is connected with adjusting nut 13, and the circumferential side wall of Self-sealed lid 9 is conflicted on valve body 1 inwall.Because Self-sealed lid 9 is arches, under the effect of the downward impacting force of valve gap 10, Self-sealed lid 9 can circumference stretch, its sidewall is made tightly to conflict on valve body 1 inwall, play sealing effect, adjusting nut 13 simultaneously on stud bolt 12 can regulate the impacting force of valve gap 10 pairs of Self-sealed lids 9, makes sealing more effective.
Wherein, the circumferential side wall of Self-sealed lid 9 is provided with supporting portion 9a, is provided with back-up ring 11 between valve gap 10 and Self-sealed lid 9, and valve body 1 inwall is provided with circular groove, and back-up ring 11 is arranged on circular groove, conflicts in back-up ring 11 inwall and supporting portion 9a surface.Self-sealed lid 9, due to always by the active force pressed down, is easily out of shape or displacement, is coordinated, ensure that the relative position of Self-sealed lid 9 in valve body 1 by back-up ring 11 with supporting portion 9a, avoid displacement.In the cavity that back-up ring 11, supporting portion 9a, valve body 1 inwall are formed, seal ring 14 can also be installed and improve sealing effect, same, the fitting surface of valve body 1, valve gap 10 also can be installed o type circle 15 to reach dust-proof effect.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technological schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. an external high pressure damping oil cylinder safety check, comprise valve body, flap is provided with in valve body, flap is connected with rotating shaft, valve body is stretched out in rotating shaft, it is characterized in that: described rotating shaft is stretched out respectively to valve body both sides and formed two external parts, valve body both sides are respectively equipped with damping mechanism, described damping mechanism comprises high pressure damping oil cylinder, connecting rod, balance weight, connecting rod one end is hinged on described external part, the connecting rod the other end fixes described balance weight, the cylinder body of high pressure damping oil cylinder is hinged on described valve body, the piston rod of high pressure damping oil cylinder to be hinged on connecting rod and the articulating point of piston rod between external part and balance weight.
2. external high pressure damping oil cylinder safety check according to claim 1, it is characterized in that: described balance weight is provided with jack, described connecting rod is engaged on jack, balance weight is provided with fastening screw trip bolt, fastening screw trip bolt is fixed on balance weight on connecting rod, described connecting rod is provided with positioning screwn, and positioning screwn is positioned at balance weight both sides.
3. external high pressure damping oil cylinder safety check according to claim 2, it is characterized in that: above described valve body, be provided with valve gap, the Self-sealed lid having arch is compressed under valve gap, Self-sealed lid upper-end surface is connected with stud bolt, the head of stud bolt stretches out valve gap and is connected with adjusting nut, and the circumferential side wall of Self-sealed lid is conflicted on valve interior wall.
4. external high pressure damping oil cylinder safety check according to claim 3, it is characterized in that: the circumferential side wall of described Self-sealed lid is provided with supporting portion, back-up ring is provided with between described valve gap and Self-sealed lid, valve interior wall is provided with circular groove, back-up ring is arranged on circular groove, and back-up ring inwall and abutment surfaces are conflicted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520486670.9U CN204739269U (en) | 2015-07-04 | 2015-07-04 | External high-pressure damping oil cylinder check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520486670.9U CN204739269U (en) | 2015-07-04 | 2015-07-04 | External high-pressure damping oil cylinder check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204739269U true CN204739269U (en) | 2015-11-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520486670.9U Expired - Fee Related CN204739269U (en) | 2015-07-04 | 2015-07-04 | External high-pressure damping oil cylinder check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204739269U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513617A (en) * | 2021-05-17 | 2021-10-19 | 江苏盾安环控系统有限公司 | Damping check valve for ventilation system of nuclear power station |
| CN116221461A (en) * | 2023-05-08 | 2023-06-06 | 沈阳东知科技有限公司 | Double-cylinder double-weight micro-resistance slow-closing check valve |
-
2015
- 2015-07-04 CN CN201520486670.9U patent/CN204739269U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113513617A (en) * | 2021-05-17 | 2021-10-19 | 江苏盾安环控系统有限公司 | Damping check valve for ventilation system of nuclear power station |
| CN116221461A (en) * | 2023-05-08 | 2023-06-06 | 沈阳东知科技有限公司 | Double-cylinder double-weight micro-resistance slow-closing check valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201203 Address after: No. 1921 Binhai 1st Road, economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: FANGZHENG VALVE GROUP Co.,Ltd. Address before: 325000, No. 1921, Binhai Park, Wenzhou economic and Technological Development Zone, Zhejiang, China Patentee before: FANGZHENG VALVE GROUP (WENZHOU) MACHINERY MANUFACTURING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 1921, Binhai 1st Road, Wenzhou Economic and Technological Development Zone, 325000, Zhejiang Province Patentee after: Founder Valve Group Co.,Ltd. Address before: No. 1921, Binhai 1st Road, Wenzhou Economic and Technological Development Zone, 325000, Zhejiang Province Patentee before: FANGZHENG VALVE GROUP Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 |