CN202745888U - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN202745888U CN202745888U CN 201220293918 CN201220293918U CN202745888U CN 202745888 U CN202745888 U CN 202745888U CN 201220293918 CN201220293918 CN 201220293918 CN 201220293918 U CN201220293918 U CN 201220293918U CN 202745888 U CN202745888 U CN 202745888U
- Authority
- CN
- China
- Prior art keywords
- valve
- spring
- spool
- valve pocket
- opening
- 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
Links
Images
Abstract
The utility model discloses a safety valve, which comprises a valve body with a valve cavity, and a valve housing, a valve core, a spring seat, a spring and a pressure adjusting screw which are arranged inside the valve cavity; the valve body is also provided with a liquid inlet passage, a liquid outlet passage and a valve hole for communicating the liquid inlet passage and the liquid outlet passage; the center of the valve housing is provided with a slide hole and a pressure cavity which is located in the middle part of the slide hole; one end of the valve core is provided with a sealing part for sealing the valve hole, the other end is provided with a pressing part for pressing the spring seat, the middle end of the valve core is provided with a sliding part for sliding inside the slide hole of the valve housing, and the valve core is also provided with a blind hole with an opening on the center of the sealing part and a liquid guide hole for communicating the blind hole and the pressure cavity inside the valve housing; and one end of the spring pushes against the spring seat, and the other end of the spring pushes against the pressure adjusting screw. Compared with a traditional product, on the premise of same flow rate, the elastic coefficient of the resetting spring is effectively reduced, so that a technical effect of fast dynamic response can be realized.
Description
Technical field
The utility model belongs to coal mine equipment hydraulic support technical field, is specifically related to a kind of safety valve.
Background technology
Safety valve is the critical component of protection hydraulic support safety, and performance must be reliable.Along with the development of comprehensive mechanical coal mining cause, the hydraulic support of the large thick cylinder diameter of mining height is also increasing gradually, and the safety valve of large flow is requisite safeguard protection Hydraulic Elements in hydraulic support and the Safety of Coal Mine Production for this reason.But because if existing safety valve wants to obtain large flow, often need a back-moving spring that coefficient of elasticity is larger, cause dynamic response slow, can not satisfy the needs of high thick cylinder diameter hydraulic support, when top board comes surge, often so that the parts damages such as column, back timber affect the down-hole and normally mine.
The utility model content
The purpose of this utility model provide a kind of structure comparatively rationally, dynamic response safety valve fast.
The technical scheme that realizes the utility model purpose is: a kind of safety valve comprises the valve body that is provided with valve pocket, and is arranged on valve pocket, spool, spring base, spring and voltage regulation screw in the valve pocket; The valve opening that described valve body also is provided with feed pathway, liquid outlet channel and is used for being communicated with feed pathway and liquid outlet channel; Described valve pocket center is provided with the pressure chamber that a slide opening and is positioned at this slide opening middle part; One end of described spool is provided with the sealing for the described valve opening of shutoff, the other end is provided be used to the pressure section that is pressed on the spring base, middle-end is provided with the sliding part that slides at the valve pocket slide opening, also is provided with the delivery hole that opening is positioned at the blind hole of sealing center and is communicated with blind hole and valve pocket internal pressure chamber on the described spool; One end of described spring is pressed on the spring base, and the other end is pressed on the voltage regulation screw.
In the such scheme, spool is provided with an end of sealing, also is provided with for the limiting section of spacing spool at valve pocket slide opening sliding distance, and described spool sliding part outer wall and valve pocket slide opening inwall are sealed and matched by O-ring seals.
In the such scheme, described spool pressure section is fixedly connected with spring base by securing member.
In the such scheme, described liquid outlet channel arrange valve body on the wall body between valve opening and the valve pocket.
In the such scheme, be provided with strainer in the described feed pathway.
In the such scheme, described valve body is provided with on the end of feed pathway and is arranged with dust cap.
The utlity model has positive effect: (1) the utility model is by improving the overall structure of safety valve, adopt spool, valve pocket, the offsetting spring structure of brand-new combination, under the prerequisite that realizes same flow, effectively reduce the coefficient of elasticity of back-moving spring, thereby obtained comparatively fast technique effect of dynamic response.
Description of drawings
Fig. 1 is for being a kind of structural representation of the present utility model.
Be labeled as shown in the accompanying drawing: valve body 1, valve pocket 11, feed pathway 12, liquid outlet channel 13, valve opening 14, valve pocket 2, slide opening 21, pressure chamber 22, spool 3, sealing 31, pressure section 32, sliding part 33, blind hole 34, delivery hole 35, limiting section 36, spring base 4, spring 5, voltage regulation screw 6, strainer 7, dust cap 8.
The specific embodiment
(embodiment 1)
Fig. 1 has shown a kind of specific embodiment of the present utility model for being a kind of structural representation of the present utility model.
The present embodiment is a kind of safety valve, as shown in Figure 1, comprises the valve body 1 that is provided with valve pocket 11, and is arranged on valve pocket 2, spool 3, spring base 4, spring 5 and voltage regulation screw 6 in the valve pocket 11; The valve opening 14 that described valve body 1 also is provided with feed pathway 12, liquid outlet channel 13 and is used for being communicated with feed pathway 12 and liquid outlet channel 13; Described valve pocket 2 centers are provided with the pressure chamber 22 that a slide opening 21 and is positioned at these slide opening 21 middle parts; One end of described spool 3 is provided with the sealing 31 for the described valve opening 14 of shutoff, the other end is provided be used to the pressure section 32 that is pressed on the spring base 4, middle-end is provided with the sliding part 33 that slides at valve pocket 2 slide openings 21, also is provided with the delivery hole 35 that opening is positioned at the blind hole 34 of sealing 31 centers and is communicated with blind hole 34 and valve pocket 2 internal pressure chambeies 22 on the described spool 3; One end of described spring 5 is pressed on the spring base 4, and the other end is pressed on the voltage regulation screw 6.
Described spool 3 pressure sections 32 are fixedly connected with spring base 4 by securing member.
Described liquid outlet channel 13 arrange valve body 1 on the wall body between valve opening 14 and the valve pocket 2.
Be provided with strainer 7 in the described feed pathway 12.
Described valve body 1 is provided with on the end of feed pathway 12 and is arranged with dust cap 8.
The present embodiment in use, both sums of the reseting elasticity that provides when valve pocket internal pressure chamber pressure and spring are during less than the hydraulic pressure of feed pathway, and spool thinks that the right-hand end among Fig. 1 moves, and valve opening is opened, hydraulic oil enters from feed pathway, flows out from liquid outlet channel behind valve opening.Both sums of the reseting elasticity that provides when hair net internal pressure chamber pressure and spring are during greater than the hydraulic pressure in the feed pathway, and the sealing of spool will seal valve opening, and hydraulic medium can not flow out from liquid outlet channel.
The present embodiment is by improving the overall structure of safety valve, adopt spool, valve pocket, the offsetting spring structure of brand-new combination, under the prerequisite that realizes same flow, effectively reduced the coefficient of elasticity of back-moving spring, thereby obtained comparatively fast technique effect of dynamic response.
Obviously, above-described embodiment of the present utility model only is for the utility model example clearly is described, and is not to be restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection domain of the present utility model.
Claims (6)
1. a safety valve comprises the valve body (1) that is provided with valve pocket (11), and is arranged on valve pocket (2), spool (3), spring base (4), spring (5) and voltage regulation screw (6) in the valve pocket (11); The valve opening (14) that described valve body (1) also is provided with feed pathway (12), liquid outlet channel (13) and is used for being communicated with feed pathway (12) and liquid outlet channel (13);
It is characterized in that:
Described valve pocket (2) center is provided with the pressure chamber (22) that a slide opening (21) and is positioned at this slide opening (21) middle part;
One end of described spool (3) is provided with the sealing (31) for the described valve opening of shutoff (14), the other end is provided be used to the pressure section (32) that is pressed on the spring base (4), middle-end is provided with the sliding part (33) that slides at valve pocket (2) slide opening (21), also is provided with the delivery hole (35) that opening is positioned at the blind hole (34) of sealing (31) center and is communicated with blind hole (34) and valve pocket (2) internal pressure chamber (22) on the described spool (3);
One end of described spring (5) is pressed on the spring base (4), and the other end is pressed on the voltage regulation screw (6).
2. safety valve according to claim 1, it is characterized in that: spool (3) is provided with an end of sealing (31), also be provided with for the limiting section (36) of spacing spool (3) at valve pocket (2) slide opening (21) sliding distance, described spool (3) sliding part (33) outer wall and valve pocket (2) slide opening (21) inwall are sealed and matched by O-ring seals.
3. safety valve according to claim 2, it is characterized in that: described spool (3) pressure section (32) is fixedly connected with spring base (4) by securing member.
4. safety valve according to claim 2 is characterized in that: described liquid outlet channel (13) arranges being positioned on the wall body between valve opening (14) and the valve pocket (2) of valve body (1).
5. safety valve according to claim 1 is characterized in that: be provided with strainer (7) in the described feed pathway (12).
6. safety valve according to claim 1 is characterized in that: described valve body (1) is provided with on the end of feed pathway (12) and is arranged with dust cap (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220293918 CN202745888U (en) | 2012-06-21 | 2012-06-21 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220293918 CN202745888U (en) | 2012-06-21 | 2012-06-21 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202745888U true CN202745888U (en) | 2013-02-20 |
Family
ID=47705304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220293918 Expired - Fee Related CN202745888U (en) | 2012-06-21 | 2012-06-21 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202745888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758643A (en) * | 2012-06-21 | 2012-10-31 | 乐清市东风煤矿设备有限公司 | Safety valve |
-
2012
- 2012-06-21 CN CN 201220293918 patent/CN202745888U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758643A (en) * | 2012-06-21 | 2012-10-31 | 乐清市东风煤矿设备有限公司 | Safety valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202039871U (en) | Safety valve | |
| CN203130118U (en) | Differential pressure combination valve | |
| CN102278330B (en) | Hydraulic device | |
| CN202745888U (en) | Safety valve | |
| CN102758643A (en) | Safety valve | |
| CN202832603U (en) | Novel medium-flux hydraulic control one-way valve | |
| CN201954059U (en) | Check water drainer | |
| CN204082091U (en) | A kind of reducing sliding sleeve switch | |
| CN206036377U (en) | Visual -adjustment reducing valve | |
| CN104234662A (en) | Variable-diameter sliding sleeve switch | |
| CN203717511U (en) | Mass flow overflow structure for pump station overflow valve | |
| CN203404449U (en) | Embedded type reducing valve of pressure meter | |
| CN203323961U (en) | Oil-gas-water isolator | |
| CN205805488U (en) | A kind of self sealss pumping blowout-preventing box | |
| CN204628669U (en) | A kind of U-shaped pin quick-acting type reduction valve | |
| CN202832580U (en) | Middle-flow hydraulic control one-way valve | |
| CN203796222U (en) | Fixed throttle valve used for oil extraction wellhead | |
| CN203614497U (en) | Overloading oil recharging valve for integral type multiple-way reversing valve | |
| CN203516853U (en) | Ceramic core check valve | |
| CN203130134U (en) | Differential pressure combination valve for displacement | |
| CN205936673U (en) | Relief pressure valve for emulsion | |
| CN202971155U (en) | One-way valve for metering pump | |
| CN201176866Y (en) | Fixed pressure production mandrel | |
| CN202327175U (en) | Ball valve | |
| CN202360110U (en) | Floating hydraulic bidirectional lock |
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 |
Granted publication date: 20130220 Termination date: 20150621 |
|
| EXPY | Termination of patent right or utility model |