CN201964018U - Nonmetal base body valve core of internal pressure rubber sealing block - Google Patents
Nonmetal base body valve core of internal pressure rubber sealing block Download PDFInfo
- Publication number
- CN201964018U CN201964018U CN2010206696184U CN201020669618U CN201964018U CN 201964018 U CN201964018 U CN 201964018U CN 2010206696184 U CN2010206696184 U CN 2010206696184U CN 201020669618 U CN201020669618 U CN 201020669618U CN 201964018 U CN201964018 U CN 201964018U
- Authority
- CN
- China
- Prior art keywords
- base body
- barb
- nonmetal
- valve core
- sealing block
- 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 - Fee Related
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- Lift Valve (AREA)
Abstract
The utility model relates to a nonmetal base body valve core of an internal pressure rubber sealing block, which comprises a base body and a sealing block, wherein the base body is a nonmetal cylinder with a through hole, and an internal clamp ring is arranged at one end of the through hole; a plurality of raised semi-cylindrical guide planes are axially arranged at the periphery of the base body; the sealing block is made of rubber materials and consists of a cylindrical sealing table, a cone frustum-shaped barb, and an internal clamp slot arranged between the sealing table and the barb; the inner diameter of the inner clamp ring is equal to the outer diameter of the inner clamp slot; and the inner diameter of the inner clamp ring is slightly larger than the outer diameter of the small end of the barb and is slightly smaller than the outer diameter of the large end of the bar. By using the nonmetal base body valve core, the technical problems of deformation of the base body, the influence on the product performance due to residual rubber on the base body guide planes, more production procedures and higher cost in the existing valve core during mould pressing process can be solved. The nonmetal base body valve core has good guidance and consistency, stability and reliability in running, a simple structure and convenience in machining, manufacturing and installing.
Description
Technical field
The utility model relates to a kind of valve core structure, relates in particular to the valve core structure of pressing the rubber seal piece in nonmetal basal body.
Background technique
Existing preliminary election valve core is made up of two-part: copper spool matrix and nitrile butadiene rubber sealing block.Elder generation's processing metal matrix, after matrix machined, in the mould of packing into, molded rubber was pressed in the space of reserving in the matrix rubber, forms spool.
There is following problem in existing preliminary election valve core:
1, nitrile butadiene rubber is in sulfidation, and compression shock makes the matrix distortion, causes the guiding circle not lead.
2, after the nitrile butadiene rubber sulfuration, always have on the guiding circle of a spot of rubber attached to matrix; The rubber of matrix guide surface remnants causes matrix not lead.
3, after the nitrile butadiene rubber sulfuration, central concave need grind off a part of matrix, guarantees that sealing surface is smooth, because Grinding Error causes the spool axial dimension to shorten, the spring force of Jie Chu auxiliary spring reduces with it, influences product performance; And assembling is during spool, and guiding circle and the sealing surface to spool carries out grinding with sand paper always, influences efficiency of assembling.
4, processing spool operation is more, and the cycle is longer, influences manufacturing schedule; The cost of metal matrix material is higher.
Summary of the invention
The utility model purpose provides a kind of interior nonmetal basal body spool of pressing the rubber seal piece, matrix distortion when having the spool mold pressing now to solve, remaining product performance, many, the cost technical problems of high of manufacturing procedure of influencing of matrix guide surface rubber.
Technical solution of the present utility model is:
Press the nonmetal basal body spool of rubber seal piece in a kind of, comprise matrix 1 and sealing block 2, its special way is: described matrix 1 is the nonmetal cylinder of band through hole 12, and an end of described through hole 12 is provided with interior snap ring 11; The excircle side axial of described matrix 1 is provided with the semi-cylindrical guide surface 13 of a plurality of projectioies;
Described sealing block 2 is a rubber material, and it comprises cylindrical seal platform 23, truncated cone barb 21, is arranged on the inner card cage 22 between sealing platform 23 and the barb 21;
The internal diameter of snap ring 11 equates with the external diameter of inner card cage 22 in described; The internal diameter of snap ring 11 is slightly larger than the small end external diameter of barb 21 in described, is slightly less than the big end external diameter of barb 21.
The end face of above-mentioned through hole 12 is provided with chamfering 14.
The quantity of above-mentioned guide surface is 6, and circumference uniform distribution is in the excircle side of matrix 1.
Technique effect of the present utility model is:
1, guidance quality and high conformity, stable and reliable operation.The utility model uses the method for mold pressing to guarantee the conformity of spool, and the guide surface degree of finish of spool is higher, thereby has guaranteed guidance quality.And then also guaranteed the proper functioning of seal valve.
2, simple in structure, manufacturing is easy for installation.The utility model only needs two molds to get final product, and the mold pressing injection is simple, has avoided difficult manufacturing procedure such as the former spool blast of preselector valve, sulfuration; Compare with the former spool of assembling, need not pick spool, grinding, avoided the assembling that causes because of former spool quality repeatedly, improved efficiency of assembling; The equal compression molding of spool matrix and sealing block, the cycle is shorter, can satisfy manufacturing schedule fully; Only need the seal ring that mold pressing is good to screw in the matrix during installation and get final product, easy for installation.
3, cost is lower.Compare cost savings about 65% with metallic matrix.
4, the guide surface of matrix increases to six by the four sides of existing spool, more helps guiding.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of matrix;
Fig. 3 is the structural representation of sealing block;
Fig. 4 is the right elevation of Fig. 1;
Reference character is as follows: snap ring in the 1-matrix, 11-, and the 12-through hole, the 13-guide surface, the 14-chamfering, the 2-sealing block, the 21-barb, the 22-inner card cage, 23-seals platform, 3-valve body.
Embodiment
Press the nonmetal basal body spool of rubber seal piece in the utility model, comprise matrix 1 and sealing block 2.Matrix 1 is the cylinder of band through hole 12, and an end of through hole 12 is provided with interior snap ring 11, and the end face of through hole 12 is provided with chamfering 14; The cylinder material is an injection-moulding plastic, and the excircle side axial of matrix 1 is evenly equipped with the semi-cylindrical guide surface 13 of 6 projectioies; Sealing block 2 is the nitrile butadiene rubber compression molding, and it comprises cylindrical seal platform 23, truncated cone barb 21, is arranged on the inner card cage 22 between sealing platform and the barb; The internal diameter of interior snap ring 11 equates with the external diameter of inner card cage 22; The internal diameter of interior snap ring 11 is slightly larger than the small end external diameter of barb 21, is slightly less than the big end external diameter of barb 21.Overhead structure embeds in the matrix 1 and is fixing and can not come off, and forms spool.The stability of assurance work.
In actual environment, as the case may be, the utility model can be positioned on the valve that needs seal spool, as preselector valve; Also the utility model can be placed between all pores that need sealing.
Claims (3)
1. press the nonmetal basal body spool of rubber seal piece in one kind, comprise matrix and sealing block, it is characterized in that: described matrix is the nonmetal cylinder of band through hole, and an end of described through hole is provided with interior snap ring; The excircle side axial of described matrix is provided with the semi-cylindrical guide surface of a plurality of projectioies;
Described sealing block is a rubber material, and it comprises cylindrical seal platform, truncated cone barb, is arranged on the inner card cage between sealing platform and the barb;
The internal diameter of snap ring equates with the external diameter of inner card cage in described; The internal diameter of snap ring is slightly larger than the small end external diameter of barb in described, is slightly less than the big end external diameter of barb.
2. press the nonmetal basal body spool of rubber seal piece in according to claim 1, it is characterized in that: the end face of described through hole is provided with chamfering.
3. press the nonmetal basal body spool of rubber seal piece in according to claim 1 and 2, it is characterized in that: the quantity of described guide surface is 6, and circumference uniform distribution is in the excircle side of matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206696184U CN201964018U (en) | 2010-12-20 | 2010-12-20 | Nonmetal base body valve core of internal pressure rubber sealing block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206696184U CN201964018U (en) | 2010-12-20 | 2010-12-20 | Nonmetal base body valve core of internal pressure rubber sealing block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201964018U true CN201964018U (en) | 2011-09-07 |
Family
ID=44526555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206696184U Expired - Fee Related CN201964018U (en) | 2010-12-20 | 2010-12-20 | Nonmetal base body valve core of internal pressure rubber sealing block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201964018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537384A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Nonmetallic matrix valve core with internally pressed rubber sealing block |
-
2010
- 2010-12-20 CN CN2010206696184U patent/CN201964018U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537384A (en) * | 2010-12-20 | 2012-07-04 | 西安航天远征流体控制股份有限公司 | Nonmetallic matrix valve core with internally pressed rubber sealing block |
| CN102537384B (en) * | 2010-12-20 | 2015-07-29 | 西安航天远征流体控制股份有限公司 | The nonmetal base body valve core of interior pressure rubber sealing block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20131220 |