CN202300439U - Two-level seal type safety valve for hydraulic support - Google Patents
Two-level seal type safety valve for hydraulic support Download PDFInfo
- Publication number
- CN202300439U CN202300439U CN2011204181421U CN201120418142U CN202300439U CN 202300439 U CN202300439 U CN 202300439U CN 2011204181421 U CN2011204181421 U CN 2011204181421U CN 201120418142 U CN201120418142 U CN 201120418142U CN 202300439 U CN202300439 U CN 202300439U
- Authority
- CN
- China
- Prior art keywords
- valve
- hydraulic support
- spool
- spring
- valve core
- 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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Abstract
The utility model discloses a two-level seal type safety valve for a hydraulic support. The valve comprises a cylindrical valve body with a rapid joint, wherein the step hole is formed at the right end of the valve body along the axis; a one-way valve base, a valve core sleeve and a valve core component are installed in the step hole from left to right; the outer circle at the right end of the valve body is connected with the valve shell through a thread and tightly presses the one-way valve base and the valve core sleeve into a chamber formed between the valve body and the valve shell; a hemisphere head at the right end of the valve core component extends into a spring chamber at the right end of the valve shell through a hole at the right end of the valve core sleeve to be contacted with a spring base; the spring base tightly presses the valve cone at the left end of the valve core component on the one-way valve base through the effects of a pressure regulating screw and a spring; the right side of the valve core component and an O-shaped ring in an inner hole groove at the right side of the valve core sleeve form a first-level seal pair through an outer cylindrical surface; and the left side of the valve core component and the one-way valve base form another first-level seal pair through a valve cone. The two-level seal type safety valve for the hydraulic support provided by the utility model has the advantages that the valve has two levels of seal pairs, and the working reliability of the safety valve is ensured fully.
Description
Technical field
The utility model relates to a kind of hydraulic support safety valve, refers in particular to a kind of hydraulic support two-stage sealed safety valve.
Background technology
Safety valve is the safety assurance element that hydraulic support must be used, and it can make operating cylinder rapid drainage when receiving the load of overshoot of hydraulic support, with the safety of guarantor, machine.The hydraulic support safety valve is all the plunger-type structure of single-stage sealing at present; During drainage on the plunger one row unloads the liquid aperture must slip over sealing ring ability drainage; The drainage aperture can form slight scuffing to sealing ring like this, sealing ring loss of seal performance gradually behind the repeated multiple times drainage.
The utility model content
The purpose of the utility model is to provide a kind of hydraulic support two-stage sealed safety valve of high sealability reliability.
For achieving the above object, the solution that the utility model is taked is:
A kind of hydraulic support two-stage sealed safety valve; It comprises the cylinder shape valve that has snap joint, and core assembly and valve casing, said valve body right-hand member form an inner chamber body after being connected with the internal thread of valve casing left end with external screw thread; Unidirectional valve seat, valve core housing and core assembly are installed in inner chamber body from left to right successively; The valve casing right part offers a circular cavity, along the circumferential direction offers an exclusive leakage opening in the circular cavity bottom, and spring base, spring and voltage regulation screw are installed in circular cavity from left to right successively; Valve casing left end excircle is provided with boot seal, and valve casing right-hand member excircle is with the cylindrical plastic dust cap.
Described core assembly comprises valve cone and spool, has a blind hole on the valve cone right part axial line, and the valve cone excircle has the blind hole at row's feed liquor aperture and center and connects; Spool is a stairstepping cylinder, and the small end head of spool is a semi-spherical shape, has a blind hole on the spool left part axial line, and the small end excircle has the blind hole at a discharged liquid aperture and center and connects, and valve cone and spool are as a whole through the pin riveted joint.
Said spring uses section configuration to process as the spring steel wire of rectangle.
The advantage of the utility model is to have simultaneously tapered and column type two-stage sealing pair, has fully guaranteed the functional reliability of safety valve.
Description of drawings
Fig. 1 is the structural representation of present embodiment.
Fig. 2 is the structural representation of present embodiment core assembly.
Among the figure: 1, valve body, 2, core assembly, 3, valve casing, 4, inner chamber body, 5, unidirectional valve seat, 6, core retainer plate; 7, circular cavity, 8, outer leakage opening, 9, spring base, 10, spring, 11, voltage regulation screw, 12, dirt-proof boot; 13, dust cap, 14, valve cone, 15, spool, 16, blind hole I, 17, the feed liquor aperture; 18, small end, 19, blind hole II, 20, drainage aperture, 21, pin.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.
Referring to Fig. 1, a kind of hydraulic support two-stage sealed safety valve, it comprises the cylinder shape valve 1 that has snap joint, core assembly 2 and valve casing 3.
Referring to Fig. 1; Said valve body 1 right-hand member forms an inner chamber body 4 after being connected with the internal thread of valve casing 3 left ends with external screw thread; Unidirectional valve seat 5, valve core housing 6 and core assembly 2 are installed in inner chamber body 4 from left to right successively; Valve casing 4 right parts offer a circular cavity 7, along the circumferential direction offer an exclusive leakage opening 8 in circular cavity 7 bottoms, and spring base 9, spring 10 and voltage regulation screw 11 are installed in circular cavity from left to right successively; Valve casing 3 left end excircles are provided with boot seal 12, and valve casing 3 right-hand member excircles are with cylindrical plastic dust cap 13.
Referring to Fig. 2, described core assembly 2 comprises valve cone 14 and spool 15, has a blind hole I 16 on the valve cone 14 right part axial lines, and valve cone 14 excircles have row's feed liquor aperture 17 and connect with the blind hole 16 at center; Spool 15 is a stairstepping cylinder; Small end 18 heads of spool 15 are semi-spherical shape; Have a blind hole II 19 on the spool 15 left part axial lines, the blind hole II 19 that small end 18 excircles have a discharged liquid aperture 20 and center connects, and valve cone 14 is riveted as a whole with spool through pin 21.
Claims (3)
1. hydraulic support two-stage sealed safety valve; It comprises cylinder shape valve (1), core assembly (2) and the valve casing (3) that has snap joint; It is characterized in that: valve body (1) right-hand member forms an inner chamber body (4) after being connected with the internal thread of valve casing (3) left end with external screw thread; Unidirectional valve seat (5), valve core housing (6) and core assembly (2) are installed in inner chamber body (4) from left to right successively; Valve casing (4) right part offers a circular cavity (7), along the circumferential direction offers an exclusive leakage opening (8) in circular cavity (7) bottom, and spring base (9), spring (10) and voltage regulation screw (11) are installed in circular cavity (7) from left to right successively; Valve casing (3) left end excircle is provided with boot seal (12), and valve casing (3) right-hand member excircle is with cylindrical plastic dust cap (13).
2. hydraulic support two-stage sealed safety valve according to claim 1; It is characterized in that: described core assembly (2) comprises valve cone (14) and spool (15); Have a blind hole I (16) on valve cone (14) the right part axial line, the blind hole I (16) that valve cone (14) excircle has row's feed liquor aperture (17) and center connects; Spool (15) is a stairstepping cylinder; Small end (18) head of spool (15) is a semi-spherical shape; Have a blind hole II (19) on spool (15) the left part axial line; The blind hole II (19) that small end (18) excircle has a discharged liquid aperture (20) and center connects, and valve cone (14) and spool (15) are as a whole through pin (21) riveted joint.
3. hydraulic support two-stage sealed safety valve according to claim 1 is characterized in that: the section configuration of said spring (10) material is a rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204181421U CN202300439U (en) | 2011-10-28 | 2011-10-28 | Two-level seal type safety valve for hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204181421U CN202300439U (en) | 2011-10-28 | 2011-10-28 | Two-level seal type safety valve for hydraulic support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300439U true CN202300439U (en) | 2012-07-04 |
Family
ID=46369361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204181421U Expired - Fee Related CN202300439U (en) | 2011-10-28 | 2011-10-28 | Two-level seal type safety valve for hydraulic support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300439U (en) |
-
2011
- 2011-10-28 CN CN2011204181421U patent/CN202300439U/en not_active Expired - Fee Related
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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: 20120704 Termination date: 20171028 |