CN204025800U - A kind of two damping One-stage Water Hydraulic Relief Valve - Google Patents
A kind of two damping One-stage Water Hydraulic Relief Valve Download PDFInfo
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- CN204025800U CN204025800U CN201420347744.6U CN201420347744U CN204025800U CN 204025800 U CN204025800 U CN 204025800U CN 201420347744 U CN201420347744 U CN 201420347744U CN 204025800 U CN204025800 U CN 204025800U
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Abstract
The utility model discloses a kind of two damping One-stage Water Hydraulic Relief Valve, it comprises valve body, valve gap and adjusting nut, described valve body comprises upper and lower valve body, and valve seat, valve pocket, spool, spring, spring seat and the adjusting screw rod arranged successively in described valve body, described valve seat and valve pocket are placed in lower valve body, described spool is hollow structure, and the shoulder of described spool evenly has aperture; The endoporus Spielpassung of the external cylindrical surface in the middle part of described spool and valve pocket forms guide surface; Described spool afterbody offers damping hole on the position of its external cylindrical surface, and the external cylindrical surface of described spool afterbody and the inner hole surface Spielpassung of upper valve body end, described spring is arranged between spool and spring seat, and described adjusting screw rod is threaded with valve gap and has locking nut to lock.The above-mentioned pair of damping One-stage Water Hydraulic Relief Valve not only volume little, lightweight, be easy to processing; And reduce the vibration and noise of valve, improve the working stability of valve.
Description
Technical field
The utility model relates to the pressure control valve in a kind of water hydraulic system, valve kind, particularly a kind of two damping One-stage Water Hydraulic Relief Valve.
Background technique
Relief valve is pressure control valve conventional in hydraulic system, can be used as level pressure relief valve or safety valve.Traditional relief valve many employings hydraulic oil is as working medium, for the relief valve being applied to aqueous medium, existing many research both at home and abroad at present, but still there is many technical problems: the viscosity 1. due to water is low, poor lubricity, the friction of spool and valve base chamber and the leakage at valve port place more serious; 2. the pressure for vaporization of water is far above hydraulic oil, easily produces cavitation phenomenon, thus reduces functional reliability and the life-span of valve; 3. medium valve port uneven go out stream and spring force depart from the radial force that the reason such as spool axle center produces and make spool polarization; 4. complicated in water hydraulic relief valve structure, difficulty of processing is large, and cost of production is high, and contamination resistance is poor.
Publication number is: CN102042432A, and denomination of invention is: a kind of One-stage Water Hydraulic Relief Valve with damping piston.One-stage Water Hydraulic Relief Valve disclosed in this patent documentation, this valve utilizes spool to play damping piston effect, and spool end is provided with countersunk head groove and forms damping cavity with end cap, when valve core movement, is increased the kinetic damping of spool by the change of damping cavity internal pressure; Meanwhile, spool tail end is designed with guide cylinder face, provides guiding to valve core movement.But this valve is under equal traffic conditions, spool lifting surface area is comparatively large, causes spring design difficulty, and causes relief valve volume, weight to increase; Meanwhile, this valve arranges damping hole in inlet, and inlet pressure is high, to such an extent as to damping hole is too small, is easy to blocking.
The One-stage Water Hydraulic Relief Valve that danfoss company of Denmark produces, this valve, by being provided with damping cavity in valve rear end, improves the working stability of valve to a certain extent.But spool is easy to polarization, consequent vibration noise and working stability sex chromosome mosaicism still exist.And the material that this valve adopts is not suitable for seawater, be only suitable for fresh water or the not strong medium of the high corrosivity such as water base.
Model utility content
The purpose of this utility model is to provide a kind of two damping One-stage Water Hydraulic Relief Valve, its have noise low, vibrate little, stable performance and be easy to the feature of processing, to solve the problems referred to above that in prior art, One-stage Water Hydraulic Relief Valve exists.
For reaching this object, the utility model by the following technical solutions:
A kind of two damping One-stage Water Hydraulic Relief Valve, it comprises valve body, valve gap and adjusting nut, wherein, described valve body comprises by the upper and lower valve body be threaded, and valve seat, valve pocket, spool, spring, spring seat and the adjusting screw rod arranged successively in described valve body, described valve seat and valve pocket are placed in lower valve body, and valve seat is also pressed in lower valve body by described valve pocket and valve seat Spielpassung; Described valve pocket and lower valve body Spielpassung and valve pocket is pushed down by upper valve body, described spool is hollow structure, and the shoulder of described spool evenly has aperture; The endoporus Spielpassung of the external cylindrical surface in the middle part of described spool and valve pocket forms guide surface; Described spool afterbody offers damping hole on the position of its external cylindrical surface, and the external cylindrical surface of described spool afterbody and the inner hole surface Spielpassung of upper valve body end, the cavity between two matching gaps forms damping cavity; The lower end of described spring contacts with spool to coordinate transmits pressure adjusting spring power; Upper end is arranged on spring seat, described spring seat and valve gap Spielpassung, and described valve gap is installed on the upper end of upper valve body; Described adjusting screw rod is threaded with valve gap and has locking nut to lock, and the bottom of described lower valve body offers water intake, and the side of described upper valve body offers water outlet.
Especially, the valve port place that described valve seat and spool are formed is cone valve structure, and the cone angle of described spool end is greater than the cone angle of valve seat endoporus oral area.
Especially, described valve seat and spool, described valve pocket and spool adopt soft-hard material to match, and described valve seat and valve pocket adopt the engineering plastics or aluminum bronze that hardness is lower, and described spool adopts Precipitation-hardening Stainless Steel.
Especially, described valve gap is threaded connection the upper end in upper valve body, and the lower end of described valve gap offers external thread structure, and the upper end corresponding to described upper valve body offers internal thread.
Especially, the afterbody of described spool is upwards extended with the cylinder table of a cooperation spring inside diameter, and the lower end of described spring is stuck on described cylinder table.
Especially, the external cylindrical surface between described valve gap and spring seat, in the middle part of spool and between the inner hole surface of valve pocket, between the external cylindrical surface of spool afterbody and the inner hole surface of upper valve body end and be provided with O RunddichtringO between seat bottom portion and lower valve body.
Especially, internal thread is offered in the upper end of described lower valve body, and outside thread is offered in the lower end of described upper valve body.
Especially, the water intake on described lower valve body adopts inner hexagonal hole as spanner position.
The beneficial effects of the utility model are, compared with prior art the described pair of damping One-stage Water Hydraulic Relief Valve is applicable to, with the hydraulic pressure system of seawater, fresh water, the high working medium such as water base, have the following advantages:
1) valve body adopts the split-type structural of upper and lower valve body, and is threaded connection, and volume is little, lightweight, save cost, be easy to processing;
2) spool offers damping hole, spool and valve pocket endoporus guide surface also have damping function, jointly form damping function, play two damping function, reduce the vibration & noise of spool;
3) external cylindrical surface of spool afterbody and the endoporus Spielpassung of upper valve body end also seal with O type circle, and its gap is comparatively large, reduces upper valve body to the coaxality requirement of spool, reduces the difficulty of processing of part.
Accompanying drawing explanation
Fig. 1 is the sectional drawing of two damping One-stage Water Hydraulic Relief Valves that the utility model embodiment 1 provides;
Fig. 2 be in Fig. 1 A-A to sectional drawing.
In figure:
1, upper valve body; 2, lower valve body; 3, valve gap; 4, locking nut; 5, valve seat; 6, valve pocket; 7, spool; 8, spring; 9, spring seat; 10, adjusting screw rod; 11, aperture; 12, damping hole; 13, O RunddichtringO; 14, cylinder table; 15, water intake; 16, water outlet.
Embodiment
The technical solution of the utility model is further illustrated by embodiment below in conjunction with accompanying drawing.
Refer to shown in Fig. 1 and Fig. 2, in the present embodiment, valve seat 5, valve pocket 6, spool 7, spring 8, spring seat 9, adjusting screw rod 10 that a kind of pair of damping One-stage Water Hydraulic Relief Valve comprises upper valve body 1, lower valve body 2, valve gap 3, locking nut 4 and arrange successively in upper valve body 1 and lower valve body 2.Described valve seat 5 and valve pocket 6 are placed in lower valve body 2, and described valve pocket 6 is with valve seat 5 Spielpassung and be pressed on by valve seat 5 in lower valve body 2; Described valve pocket 6 and lower valve body 2 Spielpassung, and by upper valve body 1, valve pocket 6 is pushed down, upper valve body 1 and lower valve body 2 are threaded connection and jointly form relief valve valve body; Internal thread is offered in the upper end of described lower valve body 2, and outside thread is offered in the lower end of described upper valve body 1.In the design of described lower valve body 2 inlet end, hexagonal endoporus is as spanner position, fastening for valve body, and lower valve body 2 outer surface not processing spanner position is specious.
Described spool 7 is hollow structure, and the valve port place that described valve seat 5 and spool 7 are formed is cone valve structure, and the cone angle of spool 7 end is slightly larger than the cone angle of valve seat 5 endoporus oral area; The shoulder of spool 7 evenly has aperture 11.
External cylindrical surface in the middle part of described spool 7 and the endoporus Spielpassung of valve pocket 6, form guide surface, described spool 7 afterbody offers damping hole 12 on the position of its external cylindrical surface, the external cylindrical surface of spool 7 afterbody and the endoporus Spielpassung of upper valve body 1 end also seal with O RunddichtringO 13, and the cavity between two matching gaps forms damping cavity; Spool 7 and valve pocket 6 endoporus guide surface also have damping function, jointly form damping function, play two damping function, reduce the vibration & noise of spool 7.
The external cylindrical surface of described spool 7 afterbody and the endoporus Spielpassung of upper valve body 1 end also seal with O RunddichtringO 13, and its gap is comparatively large, reduces the coaxality requirement of upper valve body 1 pair of spool 7, reduces the difficulty of processing of part, ensures the sealing of spool 7 and valve seat 5.
The afterbody of described spool 7 is upwards extended with the cylinder table 14 of cooperation spring 8 internal diameter, and the lower end of described spring 8 is stuck on described cylinder table 14 and coordinates transmission pressure adjusting spring power; Spring seat 9 is placed in spring 8 upper end and forms leading role with valve gap 3 Spielpassung.Described valve gap 3 is threaded connection with upper valve body 1; The lower end of described valve gap 3 offers external thread structure, and the upper end corresponding to described upper valve body 1 offers internal thread.Adjusting screw rod 10 is threaded with valve gap 8, and has locking nut 4 to lock; The bottom of described lower valve body 2 offers water intake 15, and the side of described upper valve body 1 offers water outlet 16.Described water intake 15 adopts tubular type to be connected with other interelements of water outlet 16 and hydraulic system.
O RunddichtringO 13 is provided with between the inner hole surface of described valve gap 3 and spring seat 9 and bottom valve seat 5 and between lower valve body 2.
During work, high pressure water enters from water intake 15, acts on spool 7 end, when hydraulic coupling is greater than the working pressure of pressure adjusting spring 8 setting, spool 7 is opened, and water flows out through valve port, enter spring chamber by the equally distributed aperture 11 of spool 7 shoulder again, eventually pass water outlet 16 and flow out.Spool 7 is in a certain equilibrium position under the effect of hydraulic coupling, spring force, frictional force.The pressure of water intake 15 sets by the pre compressed magnitude of Regulation spring 8.Spool 7 is in Dynamic Regulating Process, and polarization when spool 7 can suppress spool 7 to be opened with the leading role of valve pocket 6, the change of damping cavity volume simultaneously causes the change of this cavity pressure, increases the kinetic damping of spool 7, improves the working stability of spool 7.
Above embodiment has just set forth basic principle of the present utility model and characteristic; the utility model does not limit by above-mentioned example; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various change and change, and these changes and change all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. a two damping One-stage Water Hydraulic Relief Valve, it comprises valve body, valve gap and adjusting nut, it is characterized in that, described valve body comprises by the upper and lower valve body be threaded, and valve seat, valve pocket, spool, spring, spring seat and the adjusting screw rod arranged successively in described valve body, described valve seat and valve pocket are placed in lower valve body, and valve seat is also pressed in lower valve body by described valve pocket and valve seat Spielpassung; Described valve pocket and lower valve body Spielpassung and valve pocket is pushed down by upper valve body, described spool is hollow structure, and the shoulder of described spool evenly has aperture; The endoporus Spielpassung of the external cylindrical surface in the middle part of described spool and valve pocket forms guide surface; Described spool afterbody offers damping hole on the position of its external cylindrical surface, and the external cylindrical surface of described spool afterbody and the inner hole surface Spielpassung of upper valve body end, the cavity between two matching gaps forms damping cavity; The lower end of described spring contacts with spool to coordinate transmits pressure adjusting spring power; Upper end is arranged on spring seat, described spring seat and valve gap Spielpassung, and described valve gap is installed on the upper end of upper valve body; Described adjusting screw rod is threaded with valve gap and has locking nut to lock, and the bottom of described lower valve body offers water intake, and the side of described upper valve body offers water outlet.
2. according to claim 1 pair of damping One-stage Water Hydraulic Relief Valve, is characterized in that, the valve port place that described valve seat and spool are formed is cone valve structure, and the cone angle of described spool end is greater than the cone angle of valve seat endoporus oral area.
3. according to claim 1 and 2 pair of damping One-stage Water Hydraulic Relief Valve, is characterized in that, the afterbody of described spool is upwards extended with the cylinder table of a cooperation spring inside diameter, and the lower end of described spring is stuck on described cylinder table.
4. according to claim 1 pair of damping One-stage Water Hydraulic Relief Valve, is characterized in that, described valve gap is threaded connection the upper end in upper valve body, and the lower end of described valve gap offers external thread structure, and the upper end corresponding to described upper valve body offers internal thread.
5. according to claim 1 pair of damping One-stage Water Hydraulic Relief Valve, it is characterized in that, described valve seat and spool, described valve pocket and spool adopt soft-hard material to match, and described valve seat and valve pocket adopt the engineering plastics or aluminum bronze that hardness is lower, and described spool adopts Precipitation-hardening Stainless Steel.
6. according to claim 1 pair of damping One-stage Water Hydraulic Relief Valve, it is characterized in that, the external cylindrical surface between described valve gap and spring seat, in the middle part of spool and between the inner hole surface of valve pocket, between the external cylindrical surface of spool afterbody and the inner hole surface of upper valve body end and be provided with O RunddichtringO between seat bottom portion and lower valve body.
7. according to claim 1 pair of damping One-stage Water Hydraulic Relief Valve, is characterized in that, internal thread is offered in the upper end of described lower valve body, and outside thread is offered in the lower end of described upper valve body.
8. according to claim 1 pair of damping One-stage Water Hydraulic Relief Valve, is characterized in that, the water intake on described lower valve body adopts inner hexagonal hole as spanner position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347744.6U CN204025800U (en) | 2014-06-26 | 2014-06-26 | A kind of two damping One-stage Water Hydraulic Relief Valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420347744.6U CN204025800U (en) | 2014-06-26 | 2014-06-26 | A kind of two damping One-stage Water Hydraulic Relief Valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204025800U true CN204025800U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420347744.6U Withdrawn - After Issue CN204025800U (en) | 2014-06-26 | 2014-06-26 | A kind of two damping One-stage Water Hydraulic Relief Valve |
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| CN (1) | CN204025800U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019258A (en) * | 2014-06-26 | 2014-09-03 | 华中科技大学无锡研究院 | Double-damping direct-acting type hydraulic pressure overflowing valve |
| CN108458142A (en) * | 2017-12-22 | 2018-08-28 | 兰州空间技术物理研究所 | A kind of unidirectional relief valve suitable for pressure control in spacecraft module |
| CN110645387A (en) * | 2019-08-27 | 2020-01-03 | 云南农业大学 | High-lift differential pressure unpowered pump air valve |
| CN114838185A (en) * | 2021-02-01 | 2022-08-02 | 浙江三花智能控制股份有限公司 | Electric valve |
-
2014
- 2014-06-26 CN CN201420347744.6U patent/CN204025800U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019258A (en) * | 2014-06-26 | 2014-09-03 | 华中科技大学无锡研究院 | Double-damping direct-acting type hydraulic pressure overflowing valve |
| CN104019258B (en) * | 2014-06-26 | 2016-08-17 | 华中科技大学无锡研究院 | A kind of double damping One-stage Water Hydraulic Relief Valve |
| CN108458142A (en) * | 2017-12-22 | 2018-08-28 | 兰州空间技术物理研究所 | A kind of unidirectional relief valve suitable for pressure control in spacecraft module |
| CN108458142B (en) * | 2017-12-22 | 2020-03-17 | 兰州空间技术物理研究所 | One-way pressure relief valve suitable for spacecraft cabin pressure control |
| CN110645387A (en) * | 2019-08-27 | 2020-01-03 | 云南农业大学 | High-lift differential pressure unpowered pump air valve |
| CN114838185A (en) * | 2021-02-01 | 2022-08-02 | 浙江三花智能控制股份有限公司 | Electric valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141217 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |