CN201636397U - Large-flow check valve - Google Patents
Large-flow check valve Download PDFInfo
- Publication number
- CN201636397U CN201636397U CN2009202943264U CN200920294326U CN201636397U CN 201636397 U CN201636397 U CN 201636397U CN 2009202943264 U CN2009202943264 U CN 2009202943264U CN 200920294326 U CN200920294326 U CN 200920294326U CN 201636397 U CN201636397 U CN 201636397U
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- CN
- China
- Prior art keywords
- spring seat
- valve body
- spring
- safety check
- seat
- Prior art date
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a large-flow check valve, comprising a valve body, a valve core, a spring and a spring seat, wherein the valve body is provided with a valve seat; the spring seat is fixed in the valve body; the spring is arranged between the spring seat and the valve core and butts against the valve core on the valve seat; a medium passage is formed between the edge of the spring seat and the valve body; an inward concave structure with a cross section being in smooth transition is formed at the position where the valve body corresponds to the medium passage; the edge of the spring seat corresponding to the valve body is also a smoothly transitional internal concave structure; and the internal concave structure of the valve body and the internal concave structure of the spring seat jointly form a medium passage. The large-flow check valve has large passing area and large passing flow, reduces the resistance of oil liquid, expands the oil passing capability of the check valve simultaneously, realizes the design aim of low pressure and large flow, increases the maximum flow by more than 20%, and can meet the application in the hydraulic transmission and lubrication system, thus ensuring the normal running of the hydraulic transmission and lubrication system, and further prolonging the service life.
Description
Technical field
The utility model relates to a kind of pipeline parts, particularly a kind of big flow safety check.
Background technique
Pipeline is the visual plant that is used for fed sheet of a media and hydraulic pressure, air pressure control, and safety check is installed in and is used in the pipeline prevent that medium from flowing backwards, to guarantee control and the normal operation of producing.
Safety check generally comprises valve body, spool and spring, and the pretightening force to the media flow direction is met in the spring setting, when fed sheet of a media reaches certain pressure, overcome the pretightening force of spring, back down spool and reach the conveying purpose, when the medium reverse flow, then spring can be closed spool, cuts off medium channel.In the prior art, spring is by the spring seat setting, and forms medium channel between spring seat and the valve body, and this passage is because the existence of spring seat has limited rate-of flow.Along with hydraulics by more and more widely be applied in industry-by-industry, and safety check acts on extremely important as the control unit in the hydraulic system.In the hydraulic pressure and lubrication system of naval vessels and marine gearbox and other industries, the safety check overcurrent flow of said structure can not well meet the demands.The safety check of domestic production at present how based on middle small flow, high, the poor stability of cracking pressure, can not satisfy the demand of modern hydraulic technology, can cause hydraulic transmission and lubrication system fault, reduces the working life of hydraulic transmission and lubrication system.
Therefore, need a kind of safety check, compare with safety check of the same type and have bigger overcurrent flow, can satisfy in hydraulic transmission and lubrication system and use, thereby guarantee that hydraulic transmission and lubrication system normally move, improve its working life.
The model utility content
In view of this, the utility model provides a kind of big flow safety check, compares with safety check of the same type to have bigger overcurrent flow, can satisfy in hydraulic transmission and lubrication system and use, thereby assurance hydraulic transmission and lubrication system are normally moved, and improve its working life.
Big flow safety check of the present utility model, comprise valve body, spool, spring and spring seat, described valve body is provided with valve seat, and spring seat is fixedly installed in the valve body, described spring is arranged between spring seat and the spool spool is withstood on the valve seat, forms medium channel between described spring seat edge and the valve body; It is the concave inward structure that seamlessly transits that described valve body and medium channel corresponding part form cross section, and the edge of corresponding spring seat with it is the concave inward structure for seamlessly transitting also, and the concave inward structure of valve body is relative with the concave inward structure of spring seat to constitute medium channel jointly.
Further, described valve body internal fixation is provided with positioning block, the cylindrical of described spring seat is provided with outside thread, the positioning block end face is positioned at the inboard seam is set, the seam inner side surface is provided with screw thread, described spring seat is embedded on the seam and is arranged on the positioning block by being threaded, and the screw by vertically is in the seam bottom;
Further, described spring seat center is provided with guide sleeve vertically, and described center spool is provided with guide rod vertically, and described guide rod passes guide sleeve vertically and slidably cooperates with it;
Further, described spring housing is at the guide rod cylindrical;
Further, described guide sleeve and spring seat are integrally formed;
Further, described spring seat is positioned at the guide sleeve outer circumferential and circularizes groove, and described spring end is embedded in and withstands spring seat in the annular groove;
Further, described guide rod and spool are made one and are positioned at transition position and form the shaft shoulder, and spring housing withstands spool end in shaft shoulder upper end portion;
Further, the concave inward structure of the concave inward structure of described valve body and spring seat be at least respectively two along the circumferential direction uniform.
The beneficial effects of the utility model: big flow safety check of the present utility model, medium channel is expanded outside spring seat axis and valve body respectively, form the double-arc shape runner, has bigger area of passage, thereby compare with the disc type of prior art safety check of the same type and to have bigger overcurrent flow, not only reduced oil liquid resistance, enlarged the oil filling capacity of safety check simultaneously, realized the purpose of design of low pressure and mass flow, peak rate of flow increases more than 20%; Can satisfy in hydraulic transmission and lubrication system and use, thereby guarantee that hydraulic transmission and lubrication system normally move, improve its working life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 be Fig. 1 along A to view.
Embodiment
Fig. 1 is a structural representation of the present utility model, Fig. 2 be Fig. 1 along A to view, as shown in the figure: the big flow safety check of present embodiment, comprise valve body 1, spool 5, spring 6 and spring seat 2, described valve body 1 is provided with valve seat 12, spring seat 2 is fixedly installed in the valve body 1, and described spring 6 is arranged between spring seat 2 and the spool 5 spool 5 is withstood on the valve seat 12, forms medium channel between described spring seat 2 edges and the valve body 1; It is the concave inward structure 11 that seamlessly transits that described valve body 1 forms cross section with the medium channel corresponding part, 2 edges of corresponding spring seat with it also are the concave inward structure 21 that seamlessly transits, and the concave inward structure 11 of valve body 1 and the concave inward structure of spring seat 2 21 be relative to constitute medium channel jointly.
In the present embodiment, described valve body 1 internal fixation is provided with positioning block 7, the cylindrical of described spring seat 2 is provided with outside thread, the positioning block end face is positioned at the inboard seam 71 is set, seam 71 inner side surfaces are provided with screw thread, described spring seat 2 is embedded on the seam 71 and is arranged on the positioning block 7 by being threaded, and is fixed on seam 71 bottoms by screw 4 vertically; Valve body 1 and spring seat 2 adopt screw thread to screw type, screw structure, and be more stable in the chucking fixed structure running than prior art, and reduced the noise of hydraulic system.
In the using process, the structure of spring seat 2 is not being changed other parts, when only changing spring 6, can realize multiple cracking pressure, and cracking pressure is low to moderate 0.005MPa, and it is general to be of wide application.
In the present embodiment, described spring seat 2 centers are provided with guide sleeve 3 vertically, and described spool 5 centers are provided with guide rod 51 vertically, and described guide rod 51 passes guide sleeve 3 vertically and slidably cooperates with it; Improved the guide structure of spool, it is more steady that spool 5, spring 6 are in operation, and reverse leakage still less.
In the present embodiment, described spring housing 2 is at guide rod 51 cylindricals; Described guide sleeve 3 is integrally formed with spring seat 2; Preparation process is simple and reliable.
In the present embodiment, described spring seat 2 is positioned at guide sleeve 3 outer circumferential and circularizes groove 21, and described spring 6 ends are embedded in withstands spring seat 2 in the annular groove; Described guide rod 51 is made one with spool 5 and is positioned at transition position and forms the shaft shoulder 52, and spring 6 is enclosed within the shaft shoulder 52 upper end portions and withstands spool 5 end faces; Guarantee the installation stability of spring 6, thereby guarantee 6 pairs of spool uniform force application of spring, further guarantee the flexibility and the seal of safety check.
In the present embodiment, the concave inward structure 11 of described valve body 1 and the concave inward structure of spring seat 21 be at least respectively two along the circumferential direction uniform; Present embodiment adopts 4 to be uniformly distributed along the circumference, and not only forms bigger area of passage, can also guarantee the installation stability of spring seat 2 and to neutrality.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (8)
1. one kind big flow safety check, comprise valve body, spool, spring and spring seat, described valve body is provided with valve seat, and spring seat is fixedly installed in the valve body, described spring is arranged between spring seat and the spool spool is withstood on the valve seat, forms medium channel between described spring seat edge and the valve body; It is characterized in that: it is the concave inward structure that seamlessly transits that described valve body and medium channel corresponding part form cross section, the edge of corresponding spring seat with it also is the concave inward structure that seamlessly transits, and the concave inward structure of valve body is relative with the concave inward structure of spring seat to constitute medium channel jointly.
2. big flow safety check according to claim 1, it is characterized in that: described valve body internal fixation is provided with positioning block, the cylindrical of described spring seat is provided with outside thread, the positioning block end face is positioned at the inboard seam is set, the seam inner side surface is provided with screw thread, described spring seat is embedded on the seam and is arranged on the positioning block by being threaded, and the screw by vertically is in the seam bottom.
3. big flow safety check according to claim 2 is characterized in that: described spring seat center is provided with guide sleeve vertically, and described center spool is provided with guide rod vertically, and described guide rod passes guide sleeve vertically and slidably cooperates with it.
4. big flow safety check according to claim 3, it is characterized in that: described spring housing is at the guide rod cylindrical.
5. big flow safety check according to claim 4, it is characterized in that: described guide sleeve and spring seat are integrally formed.
6. big flow safety check according to claim 5 is characterized in that: described spring seat is positioned at the guide sleeve outer circumferential and circularizes groove, and described spring end is embedded in and withstands spring seat in the annular groove.
7. big flow safety check according to claim 6 is characterized in that: described guide rod and spool are made one and are positioned at transition position and form the shaft shoulder, and spring housing withstands spool end in shaft shoulder upper end portion.
8. big flow safety check according to claim 7 is characterized in that: the concave inward structure of described valve body and the concave inward structure of spring seat be at least respectively two along the circumferential direction uniform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202943264U CN201636397U (en) | 2009-12-31 | 2009-12-31 | Large-flow check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202943264U CN201636397U (en) | 2009-12-31 | 2009-12-31 | Large-flow check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201636397U true CN201636397U (en) | 2010-11-17 |
Family
ID=43080890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202943264U Expired - Lifetime CN201636397U (en) | 2009-12-31 | 2009-12-31 | Large-flow check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201636397U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563151A (en) * | 2011-12-31 | 2012-07-11 | 江苏省长江公路大桥建设指挥部 | Automatic overpressure exhaust valve |
-
2009
- 2009-12-31 CN CN2009202943264U patent/CN201636397U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563151A (en) * | 2011-12-31 | 2012-07-11 | 江苏省长江公路大桥建设指挥部 | Automatic overpressure exhaust valve |
| CN102563151B (en) * | 2011-12-31 | 2013-12-18 | 江苏省交通规划设计院股份有限公司 | Automatic overpressure exhaust valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |
|
| CX01 | Expiry of patent term |