CN201386841Y - Tube-type back pressure valve - Google Patents
Tube-type back pressure valve Download PDFInfo
- Publication number
- CN201386841Y CN201386841Y CN200920070110U CN200920070110U CN201386841Y CN 201386841 Y CN201386841 Y CN 201386841Y CN 200920070110 U CN200920070110 U CN 200920070110U CN 200920070110 U CN200920070110 U CN 200920070110U CN 201386841 Y CN201386841 Y CN 201386841Y
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- valve
- back pressure
- type back
- pressure valve
- tube
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Abstract
A tube-type back pressure valve comprises a valve body provided with a main hole, a conical valve arranged inside the valve body and a spring device, wherein a sealing end of the conical valve is provided with soft sealing. The tube-type back pressure valve has the beneficial effects that: compared with the hard sealing between the metal conical valve and the metal valve body in the traditional tube-type back pressure valve, the tube-type back pressure valve adopts the nonmetallic soft sealing arranged at the sealing end of the metal conical valve, thus leading an oil sealing port of the tube-type back pressure valve to be more laminated and have better tightness, and reducing the inner leakage of the tube-type back pressure valve.
Description
Technical field
The utility model relates to a kind of hydraulic element, relates to a kind of tubular type back pressure valve that is applied to be used in the hydraulic circuit guaranteeing system pressure specifically.
Background technique
The tubular type back pressure valve is a kind of valve by being threaded, and it is used for the hydraulic system oil circuit, links to each other with oil cylinder.The tubular type back pressure valve allows the fluid folk prescription to flowing, and also is equivalent to a safety valve, has unlatching well, leaks few characteristics.The tubular type back pressure valve can be used for to cracking pressure and internal leakage have relatively high expectations, working pressure is not to be very greatly and not the frequent occasion that opens and closes.
Existing its structure of tubular type back pressure valve all is to guarantee the leakage rate index by closely cooperating between a metal cone valve and the metal valve body, and this structure adds the circularity of cone valve in man-hour to manufacturing, and coaxality etc. all have very high requirement, cause manufacture cost higher.
In addition, the cracking pressure of existing tubular type back pressure valve all is to decide by pre-designed spring force.Because the cracking pressure value the when integrating error in the manufacturing course of working can influence the valve real work, this value can fluctuate in the certain limit of desirable value, after the tubular type back pressure valve arrives certain working life, because factor such as the reducing and all can influence its cracking pressure of the wearing and tearing of valve body self and spring force, at this moment, existing tubular type back pressure valve can not satisfy usage requirement by self regulating, and can only change inner components or adopt new tubular type back pressure valve.
The model utility content
In order to address the above problem, the utility model provide a kind of simple in structure, cost is low, good sealing effect, the adjustable tubular type back pressure valve of cracking pressure.
To achieve these goals, technical solution of the present utility model is:
A kind of tubular type back pressure valve comprises the valve body that is provided with main aperture, the cone valve that is arranged on valve inner and spring assembly, it is characterized in that the sealing end of described cone valve is provided with a soft seal.
Further, in the utility model, also be provided with a locking nut that is used for withstanding the spring seat of spring assembly in the described valve body, have one section radial groove on this locking nut, have on the right of radial groove one with the perpendicular screw of this radial groove, in screw, be provided with lock screw, have on the left side of radial groove one with the perpendicular and coaxial through hole of this radial groove with described screw.
Further, in the utility model, the inwall of described main aperture is provided with circular groove, and is stuck by the impurity in the fluid in movement process to prevent cone valve.
The beneficial effects of the utility model are:
1, with traditional tubular type back pressure valve in the metal cone valve compare with the hard sealing between the metal valve body, the utility model adopts the sealing end at the metal cone valve that nonmetallic soft seal form is set, make the oil sealing mouth of tubular type back pressure valve more fit, better tightness has reduced the internal leakage of tubular type back pressure valve.
2, the cracking pressure that can adjust the tubular type back pressure valve at the adjustment screw and the adjustment nut of the setting of oil outlet place arrives than exact value, the integrating error of tubular type back pressure valve when machining have so just been remedied, make its cracking pressure adjustable within the specific limits, even the back causes spring force to reduce owing to parts wear working long hours, also can repair voluntarily, increased the working life of tubular type back pressure valve by adjusting screw and locking nut.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the plan view of base of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, a kind of tubular type back pressure valve comprises valve body 1, and valve body 1 is a tubulose, and valve body 1 outside is the outer-hexagonal form, is convenient to installing/dismounting.Valve body 1 inside has main aperture 15, and the two ends of valve body 1 all have the mouth 11 that is threaded, and main aperture 15 communicates with two mouths 11 that are threaded, and the mouth that is threaded of right-hand member is oil inlet P 1, and the mouth that is threaded of left end is oil outlet P2.The mouth 11 that is threaded all is to adopt the machining form to obtain with main aperture 15.
Cone valve 5 is arranged in the main aperture 15, and the front portion of cone valve 5, rear portion are a cylinder, and the radius ratio at rear portion is anterior big, and matches with main aperture in the rear portion.In order to improve the robust motion of cone valve 5, the inwall of main aperture 15 is provided with circular groove 13, and is stuck by the impurity in the fluid in movement process to prevent cone valve 5.
The front end of cone valve 5 has a conical surface 16, makes its formation circular cone that becomes a mandarin.The front portion of cone valve 5 has oil guiding hole 14 radially.Ladder hole (not indicating among the figure) is made in cone valve inside, and the shoulder hole of low order end is used for installing a soft seal 3.Soft seal 3 left ends are the cylinders that match with cone valve 5, make a tapped hole on the left side vertically, and this soft seal 3 is fixed together with cone valve 5 by the bolt 4 that is arranged on cone valve inside.The right side of soft seal 3 is a sphere, and this sphere cooperates with oil sealing mouth 2 on the valve body 1.As shown in the figure, under free state, the sphere of soft seal front end withstands on the limited step 17 of valve body.
Spring assembly comprises spring 6 and spring seat 7.Spring 6 is placed in the left end macropore of ladder hole of cone valve 5, the right-hand member of spring 6 utilizes the ladder surface of ladder hole to locate, the left end of spring 6 is fixed on the spring seat 7, a through hole is arranged in the middle of the spring seat 7, be convenient to flowing of fluid, spring seat 7 is positioned at the mouth 11 that is threaded of left end, and is withstood by a locking nut 12.This locking nut 12 is threaded with the mouth 11 that is threaded, and makes hexagonal through holes in the middle of the locking nut 12, and hexagonal through hole not only for fluid flows, has made things convenient for the dismounting of locking nut simultaneously in this.Have one section radial groove 18 on the locking nut 12, locking nut 12 local segmentation are become two sections that differ in size, have on the right of radial groove 18 one with the perpendicular screw 8 of this radial groove 18, have on the left side of radial groove 18 one with the perpendicular through hole 10 of this radial groove, screw 8 is coaxial with through hole 10.The aperture of through hole 10 is less than the aperture of screw 8.In screw 8, be provided with lock screw 9.When lock screw 9 is tightened left and the left-hand component of radial groove is outwards pushed up, the screw thread tension on the locking nut 12, locking nut 12 blocks mutually with valve body 1; Twist to the right when lock screw 9, the left-hand component of radial groove resets, and can regulate this moment to the position of locking nut 12 in the mouth 11 that is threaded.
The situation of the utility model work: diagram tubular type back pressure valve is in closed condition, the hydraulic oil that enters oil inlet P 1 acts on oil sealing mouth 2 places, increase along with hydraulic fluid pressure, the cracking pressure that hydraulic oil overcomes spring 6 moves to left soft seal 3 drive cone valves 5, runs into the locating shoulder of spring seat 7 until cone valve 5.After this moment, hydraulic oil entered from oil inlet P 1, enter the ladder hole of cone valve inside, discharge from oil outlet P2 at last through the oil guiding hole 14 of cone valve 5.When hydraulic fluid pressure during less than the cracking pressure of spring 6, cone valve 5 promotes cone valve 5 and drives soft seals 3 and move to right and promptly cut out to oil sealing mouth 2 places under the effect of spring force.
Under long use condition, the component of tubular type back pressure valve have after certain wearing and tearing, when the cracking pressure of spring 6 can be slightly less than needed cracking pressure, available instrument this moment (Phillips screwdriver or Torx screwdriver) passes the through hole 10 loosening tight lock screws 9 on the locking nut 12, adjusting lock nut 12 is until required cracking pressure then, adjustment finishes, and locking lock screw 9 gets final product.
When pressure oil when the P2 chamber enters, hydraulic oil acts on cone valve 5 inner chambers and oil sealing mouth 2 places after entering spring chamber because the effect of spring force still remains on the oil sealing mouth 2 soft seal 3, P1 does not have in the chamber fluid and flows out, and is oppositely and ends.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in the foregoing description and the specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (3)
1. a tubular type back pressure valve comprises the valve body that is provided with main aperture, the cone valve that is arranged on valve inner and spring assembly, it is characterized in that the sealing end of described cone valve is provided with a soft seal.
2. tubular type back pressure valve according to claim 1, it is characterized in that, also be provided with a locking nut that is used for withstanding the spring seat of spring assembly in the described valve body, have one section radial groove on this locking nut, have on the right of radial groove one with the perpendicular screw of this radial groove, in screw, be provided with lock screw, have on the left side of radial groove one with the perpendicular and coaxial through hole of this radial groove with described screw, described through-hole aperture is less than the screw aperture.
3. tubular type back pressure valve according to claim 1 is characterized in that the inwall of described main aperture is provided with circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920070110U CN201386841Y (en) | 2009-04-09 | 2009-04-09 | Tube-type back pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920070110U CN201386841Y (en) | 2009-04-09 | 2009-04-09 | Tube-type back pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386841Y true CN201386841Y (en) | 2010-01-20 |
Family
ID=41579375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920070110U Expired - Fee Related CN201386841Y (en) | 2009-04-09 | 2009-04-09 | Tube-type back pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386841Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180035A (en) * | 2014-07-27 | 2014-12-03 | 成都国光电子仪表有限责任公司 | Rotary pressure reduction and regulation pipe |
| CN107939761A (en) * | 2017-11-24 | 2018-04-20 | 宁波文泽机电技术开发有限公司 | One kind is used for the pressure controlled locking device of hydraulic valve |
| CN108005980A (en) * | 2017-11-24 | 2018-05-08 | 宁波文泽机电技术开发有限公司 | For the pressure controlled locking device of hydraulic valve |
| CN108730538A (en) * | 2018-06-17 | 2018-11-02 | 山西平阳重工机械有限责任公司 | Counterbalance valve |
-
2009
- 2009-04-09 CN CN200920070110U patent/CN201386841Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180035A (en) * | 2014-07-27 | 2014-12-03 | 成都国光电子仪表有限责任公司 | Rotary pressure reduction and regulation pipe |
| CN104180035B (en) * | 2014-07-27 | 2016-05-11 | 成都国光电子仪表有限责任公司 | Rotary type decompression surge pipe |
| CN107939761A (en) * | 2017-11-24 | 2018-04-20 | 宁波文泽机电技术开发有限公司 | One kind is used for the pressure controlled locking device of hydraulic valve |
| CN108005980A (en) * | 2017-11-24 | 2018-05-08 | 宁波文泽机电技术开发有限公司 | For the pressure controlled locking device of hydraulic valve |
| CN108730538A (en) * | 2018-06-17 | 2018-11-02 | 山西平阳重工机械有限责任公司 | Counterbalance valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20160409 |