CN86206338U - Pressure control valve - Google Patents
Pressure control valve Download PDFInfo
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- CN86206338U CN86206338U CN 86206338 CN86206338U CN86206338U CN 86206338 U CN86206338 U CN 86206338U CN 86206338 CN86206338 CN 86206338 CN 86206338 U CN86206338 U CN 86206338U CN 86206338 U CN86206338 U CN 86206338U
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Abstract
The utility model relates to the improvement of a pressure control valve in hydraulic transmission. A guide sleeve for preventing the radial vibration of a valve core is arranged in the valve body of a pressure valve used for hydraulic transmission; a semitight oil chamber composed of the guide sleeve, a pressure adjusting spring seat and a damper acts on damping and absorbing vibration or reducing the axial vibration of the valve core, thus the whistle of the valve is eliminated, noise is reduced, and the operating performance of the valve is enhanced.
Description
The utility model belongs to the improvement to pressure controlled valve in the hydraulic transmission.
Employed pressure controlled valve is called for short pressure valve in the hydraulic transmission, and it comprises relief valve, reduction valve and sequence valve etc.The utility model system is to the improvement of the cone valve type pilot valve of straight ejector half cone valve type relief valve and various type pilot pressure valve.
Cone valve type relief valve and cone valve type pilot valve are made up of valve body, valve seat, cone valve type spool, pressure adjusting spring, spring seat, regulator bolts and Sealing.This valve arrangement is simple, be swift in motion, be quick on the draw, and be valve class commonly used in the hydraulic transmission.But they are when work, lift off a seat when valve port is opened when liquid promotes spool, spool is in vacant state and produces radial vibration, make valve produce the whistle and noise, and cause and the pressure surge of system the performance of valve, the proper functioning and the operator of system are had a negative impact.For a long time, the relevant personnel for example, adopt the small-angle spool in the improved way of research both at home and abroad, the cone angle of general spool is changed into 24 ° by 40 °, and increase the throttling shoulder at the bottom of the awl of spool; Or adopt the structure of making to have guiding and damping vibration attenuation plunger at the vertex of a cone of poppet spool valve.But these methods also have deficiency, and the former can not guarantee that spool does not produce radial vibration from structure, and axial vibration more without any preventing measure, can not be guaranteed vibration and noise reducing.The latter has limited the radial and axial vibration of spool on principle, but the small plunger bore dia of valve seat is little, the precision height, the concentricity requirement height of the small plunger of the spool conical surface and the vertex of a cone, these two parts all are difficult to processing, on precision and quality of processing, do not reach the vibration that causes spool when requiring on the contrary, therefore promote the use of all and have any problem.
The purpose of the utility model is to keep the basic structure of existing pressure valve and need not to improve under the situation of mechanical processing difficulty, in valve body, set up zero, the device that prevent the spool radial vibration and the axial vibration of spool is played damping weakening effect, make valve do not have the whistle and reduce noise, improve and do the service behaviour of high valve.
Feature of the present utility model is, afterbody place at the cone valve type spool sets up guide sleeve 1, the endoporus of guide sleeve and valve body is for movingly, it can be moved vertically with poppet valve core, can directly contact between the shoulder of guide sleeve 1 and poppet valve core, but also between is installed the gasket seal 5 that a soft metal or oil resistant nonmetallic material are made.When poppet valve core is lifted off a seat under the fluid pressure effect, rely on the end face or the frictional force between gasket seal and the poppet valve core shoulder of guide sleeve 1 to prevent that spool from producing radial vibration, poppet valve core and guide sleeve 1 are separation structure, the accurate return of centering voluntarily during the spool close port, concentricity requirement between spool and the guide sleeve is not high, so available general machining method is made.Guide sleeve 1 is to make with steel, iron, copper, aluminium, Cuprum alloy, aluminum alloy, nylon or polytetrafluoroethylene material, have balancing slit on the external cylindrical surface of cover, also make to have radial hole on the guide sleeve for mounting or dismounting usefulness, guide sleeve and spool land opposing end faces also can be at the last grooves that seal ring is installed of making; If guide sleeve strength ratio steel, during the low material of iron, should between guide sleeve and pressure adjusting spring, add a steel packing ring.In the utility model, the inner chamber of guide sleeve 1 and spring seat, valve body constitute a sealing grease chamber, the grease chamber communicates with oil back chamber in the valve body by the damping hole on the damper 2, damping hole effect on the damper 2 is when poppet valve core and guide sleeve 1 move axially, the sealing grease chamber draws or discharges fluid by the oil back chamber of damping hole in valve body, if poppet valve core is done axial vibration with guide sleeve 1, then damping weakening effect just plays to it in damping hole and sealing grease chamber.If guide sleeve 1 can make the vibration of poppet valve core reduce and eliminate whistle cry, then can not establish damper and damping hole in the use.
The utility model embodiment one sees shown in Figure 1.
Among Fig. 1, the 1-guide sleeve; 2-plug formula damper; The long-pending bar of 3-control; The 4-spring seat; The 5-gasket seal; The a-damping hole; The b-radial hole;
Guide sleeve 1 and valve body inner bore are movingly, and use steel, iron, copper, aluminium, Cuprum alloy, aluminum alloy, nylon or polytetrafluoroethylene material are made, it is 0.5 millimeter that 3-5 bar wide is arranged on the outer cylinder surface of guide sleeve 1, be 0.5 millimeter deeply, spacing is the balancing slit of 2-4 millimeter, it is the radial hole of 3-5 millimeter that two apertures are arranged on the guide sleeve 1, in order to mounting or dismounting, guide sleeve 1 is the plane with poppet valve core shoulder opposing end faces, useful therebetween oil resistant rubber or nylon, polytetrafluoroethylene, copper, aluminium, the gasket seal 5 that Cuprum alloy is made, the pad external diameter equates with the poppet valve core cone bottom diameter, internal diameter is than the big 0.2-0.8 millimeter of spool tail diameter, and spacer thickness is the 0.2-0.8 millimeter.If guide sleeve material therefor strength ratio steel, iron are low, then directly should between spring and guide sleeve, add a steel packing ring.Damper 2 is a plug formula damper, its external diameter is the 5-8 millimeter, high 3-8 millimeter, its middle part makes to have damping hole a vertically, the hole is thin-walled hole or short hole, the aperture is the 0.4-1.5 millimeter, the optimum aperture is the 0.7-1.2 millimeter, the outer surface of plug formula damper 2 has been done screw thread, screwdriver slot or hexagon wrench hole have been done in its top, and for dismounting usefulness, Ruo Saishi damper 2 is to adopt to be pressed into bonding method at the valve body internal fixation, then its outer surface can be smooth finish surface, and plug formula damper 2 material therefors are identical with guide sleeve 1 material therefor.If need not fill in the formula damper, then damping hole a does on the relevant position of valve body top plug formula damper in this example, and damping hole a is identical on the aperture of damping hole and shape and the plug formula damper 2.The long-pending bar 3 of control is contained on the spring seat 4, and long-pending bar one end of control has been done screw thread, so that fixing on spring seat; The other end has screwdriver slot so that dismounting.The long-pending shank diameter of control should be than the little 0.5-1.5 millimeter of pressure adjusting spring internal diameter.The long-pending bar of control also can be done as a whole processing with the long-pending bar of spring seat and control with steel or iron, copper, aluminium, Cuprum alloy, aluminum alloy, nylon, polytetrafluoroethylene material.
When valve use to be installed, the return opening that should guarantee valve up, poppet valve core, pressure adjusting spring and adjusting bolt and valve seat can be with existing pressure valve parts in this example, the endoporus that matches with guide sleeve 1 on the valve body and need do processing to the duct between the return opening from damping hole a.
The utility model embodiment two sees shown in Figure 2.
Among Fig. 2, the 1-guide sleeve; 2-shell type damper; The long-pending bar of 3-control; The 4-spring seat; The 5-seal ring; The a-radial hole; The b-damping hole.Have an axial groove on the outer round surface of shell type damper 2, groove depth 2.5-3 millimeter, wide 2.5-4 millimeter, long than the little 4-5 millimeter of cover length overall; On position corresponding on the end face of locating shoulder one end of cover, be milled with one and widely be the 2.5-4 millimeter with axial groove, dark is the radial groove of 2.5-4 millimeter, makes damping hole b in the bottom of groove, and the aperture is the 0.4-1.5 millimeter, the optimum aperture is the 0.7-1.2 millimeter, and damping hole b communicates with axial groove.Shell type damper 2 is pressed into valve body, and guarantee that the axial groove and the return opening of valve are in same orientation, and the axial position of damper 2 is located by shoulder and valve body, and guide sleeve 1 is loaded on the endoporus of shell type damper 2, and with the endoporus of shell type damper 2 movingly, it can be moved vertically with poppet valve core.Guide sleeve 1 directly contacts with the poppet valve core shoulder, its with end face that the poppet valve core shoulder contacts on have the groove that seal ring 5 is installed, the radial hole that to be drilled with two apertures on the guide sleeve 1 be φ 3-6 millimeter is used for the dress folding.The long-pending bar 3 used materials of guide sleeve 1, shell type damper 2 and control are identical with embodiment one.Available existing pressure valve parts such as valve body, valve seat, poppet valve core, pressure adjusting spring and spring seat, just the hole need that match of valve body and shell type damper 2 are again through machining, should make the tapped hole that the long-pending bar of control is installed on the spring seat, the Installation Considerations of valve is with embodiment one.
Embodiment's one, two described pressure valve, the remote pressure regulating valve that can do direct-acting overflow valve, safety valve and various type pilot pressure valve uses.
Embodiment three is the pilot valves that are used as various type pilot pressure valve, sees shown in Figure 3.
Fig. 4 is the pilot valve structural drawing of pilot-type relief valve,
Fig. 5 is the A-A sectional view of Fig. 4.
Among the figure, the 1-guide sleeve; 2-cartridge type damper; 3, the 4-seal ring; The a-radial hole; The b-damping hole; The c-oil outlet; The d-axial groove; The e-locating slot.
As shown in Figure 5, cartridge type damper 2 is loaded in the valve body, and with seal ring 3 and 4 sealings, there is an oil outlet c middle part of tube and end on the tube respectively, the aperture is the 6-12 millimeter, the width of axial groove d is the 3-6 millimeter, dark 2.5-5 millimeter, and groove d and oil outlet c are in same orientation, damping hole b does on the bottom land of axial groove d away from oil outlet c, damping hole is thin-walled hole or short hole, and the aperture is the 0.4-1.5 millimeter, and the optimum aperture is the 0.7-1.2 millimeter.If barrel when enough thick, also can be made a diameter and be said axial groove d above the axial bore replacement of 2.5-5 millimeter on barrel, the residing orientation of this axial bore is identical with axial groove d, makes damping hole b in the bottom of this axial bore then, and damping hole is same as described above.Because pilot valve has three positions that may install in use, promptly be contained in top, right side or the left side of main valve, for easy for installation, afterbody at cartridge type damper 2 makes to have 3 locating slot e, its effect is when pilot valve in office may the mounting point, makes damping hole b always remain in up position by positioning screwn and locating slot.After the position of cartridge type damper 2 is installed correctly, pushing down its shoulder with the female annular end face of cover is fastened in the valve body, guide sleeve 1 shape is identical with embodiment 2, also can not establish hole a, the material of guide sleeve 1 and cartridge type damper 2 is identical with embodiment one, parts such as spring seat, valve seat, poppet valve core, spring can use the part of existing pressure valve, and valve body can be with having valve body now, and only its endoporus need be by requirement processing of the present invention.The pilot valve that this routine said pressure valve can be made various type pilot tubular types, board-like, superposition formula and plug-in type pressure valve uses.Fig. 3 is the use-case that is installed on the superposition formula pilot-type relief valve.
Pressure valve described in the utility model, can prevent and reduce the vibration of pressure valve spool, eliminating makes an uproar is, reduces noise, can make the noise of valve be down to 65-70dB, improve the performance of pressure valve, improve the craftmanship of hydraulic system, the pressure of pressure valve and range of flow all meet national standard, and its structure is slightly to make improvements on existing basis with pressure valve, simple, use the general process equipment of present Hydraulic Elements to make, small investment, easy to utilize. Pressure valve described in the utility model also can be used in other various hydraulic transmission mediums except being applicable to the hydraulic oil medium.
Claims (10)
1, the pressure valve of using in the Hydraulic Power Transmission System, it is made up of valve body, valve seat, cone valve type spool, pressure adjusting spring, spring seat, regulator bolts, Sealing etc., it is characterized in that a guide sleeve that prevents the spool radial vibration being housed at the afterbody of cone valve type spool, one gasket seal is arranged between spool and guide sleeve, a long-pending bar of control is arranged on spring seat, and the import and export in guide sleeve, spring seat and the formed grease chamber of valve body is provided with damping device.
2, by the said pressure valve of claim 1, it is characterized in that said guide sleeve has 3-5 bar wide to be 0.5 millimeter, to be that 0.5 millimeter, spacing are the balancing slit of 2-4 millimeter deeply on its outer cylinder, it is the radial hole of 3-5 millimeter that two diameters are arranged on the guide sleeve, guide sleeve and spool land opposing end faces are for having seal groove or slotless plane, and guide sleeve is to make with steel, iron, copper, aluminium, Cuprum alloy or aluminum alloy, nylon or polytetrafluoroethylene material.
3, by the said pressure valve of claim 1, it is characterized in that its external diameter of said gasket seal equates with the cone bottom diameter of cone valve type spool, internal diameter is than the big 0.2-0.8 millimeter of spool tail diameter, thickness is the 0.2-0.8 millimeter, and it is to make with oil resistant rubber, nylon, polytetrafluoroethylene, copper, aluminium, Cuprum alloy or aluminum alloy.
4, by the said pressure valve of claim 1, it is characterized in that the internal diameter little 0.5-1.5 millimeter of the long-pending shank diameter of said control than pressure adjusting spring, the one end has been done screw thread, or constitutes one processing with the pressure adjusting spring seat.
5, by the said pressure valve of claim 1, it is characterized in that said damping device is made on valve body, its orientation is identical with return opening on the valve body, and the damping aperture is the 0.4-1.5 millimeter, optimum aperture 0.7-1.2 millimeter, the hole is the thin-walled hole or lacks the hole.
6, by the said pressure valve of claim 1, it is characterized in that said damping device is that a plug formula damper is installed on the same orientation at valve body return opening place, external diameter is the 5-8 millimeter, high 3-8 millimeter, make damping hole in the middle vertically, the outer surface of plug formula damper does to have screw thread, screwdriver slot or Allen wrench hole, also smooth finish surface.
7, by the said pressure valve of claim 1, it is characterized in that said damping device is that a shell type damper has a dark 2.5-3 millimeter, wide 2.5-4 millimeter, long axial groove than the little 4-5 millimeter of cover length overall on its outer round surface, the radial groove that one wide 2.5-4 millimeter, dark 2.5-4 millimeter are arranged on position corresponding with groove on the end face of locating shoulder one end that overlaps, along the axial work that overlaps damping hole is arranged at this groove bottom, damping hole communicates with axial groove.
8, by the said pressure valve of claim 1, it is characterized in that said damping device is the cartridge type damper, a radially oil outlet of discharging oil overflow is arranged in the above, the aperture is the 6-12 millimeter, on the outer round surface of tube an axial groove is arranged, the orientation of groove is identical with oil outlet, groove width 3-6 millimeter, dark 2.5-5 millimeter, have damping hole on the bottom land of this groove away from oil outlet one end, the afterbody of tube has three locating slots, or on the orientation identical with above-mentioned axial groove, make axial bore along barrel, make to have damping hole in the bottom in hole.
9, by the damping hole of claim 6 or 7 or 8 said dampers, it is characterized in that damping hole is thin-walled hole or short hole, the aperture is the 0.4-1.5 millimeter, the optimum aperture is the 0.7-1.2 millimeter.
10,, it is characterized in that they make with steel or iron, copper, aluminium, Cuprum alloy, aluminum alloy, nylon or polytetrafluoroethylene material by claim 6 or 7 or 8 said dampers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86206338 CN86206338U (en) | 1986-08-30 | 1986-08-30 | Pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86206338 CN86206338U (en) | 1986-08-30 | 1986-08-30 | Pressure control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86206338U true CN86206338U (en) | 1987-09-02 |
Family
ID=4808998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86206338 Withdrawn CN86206338U (en) | 1986-08-30 | 1986-08-30 | Pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86206338U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032374A (en) * | 2009-10-08 | 2011-04-27 | 沃尔沃建造设备控股（瑞典）有限公司 | Pressure control valve |
| CN108027088A (en) * | 2015-09-18 | 2018-05-11 | 株式会社岛津制作所 | Pressure-control valve |
-
1986
- 1986-08-30 CN CN 86206338 patent/CN86206338U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032374A (en) * | 2009-10-08 | 2011-04-27 | 沃尔沃建造设备控股（瑞典）有限公司 | Pressure control valve |
| CN108027088A (en) * | 2015-09-18 | 2018-05-11 | 株式会社岛津制作所 | Pressure-control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |