CN203549029U - Spring type safety valve - Google Patents
Spring type safety valve Download PDFInfo
- Publication number
- CN203549029U CN203549029U CN201320766682.8U CN201320766682U CN203549029U CN 203549029 U CN203549029 U CN 203549029U CN 201320766682 U CN201320766682 U CN 201320766682U CN 203549029 U CN203549029 U CN 203549029U
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- China
- Prior art keywords
- upper cover
- safety valve
- spring
- valve
- positioning recess
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- Expired - Lifetime
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- 210000004907 gland Anatomy 0.000 claims description 32
- 230000007704 transition Effects 0.000 claims description 24
- 230000000452 restraining effect Effects 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model provides a spring type safety valve and belongs to the technical field of valve manufacture. The problem that the spring pressure adjusting accuracy of an existing spring type safety valve is low is solved. The spring type safety valve comprises a valve body, a hand wheel and a barrel-shaped upper cover, wherein the valve body is fixedly connected with the upper cover, the upper cover is sleeved by the hand wheel, a plurality of positioning recesses are distributed at the top of the cover at intervals, a positioning piece is arranged between the upper cover and the hand wheel, and the hand wheel is pressed on the positioning piece to enable the positioning piece to be positioned at the positions of the positioning recesses and can drive the positioning piece to rotate so as to enable the positioning piece to be moved from one positioning recess to a next positioning recess. A sealing sleeve is arranged between the upper cover and the valve body and enables a cavity of the valve body not to be communicated with a cavity of the upper cover, a spring is arranged in the upper cover, one end of the spring abuts against the positioning piece, and the other end of the spring abuts against the sealing sleeve to enable the sealing sleeve to be always provided with a cut-out valve, so that the valve tends to closing. The spring type safety valve has the advantages of being good in sealing performance, high in spring pressure adjusting accuracy and the like.
Description
Technical field
The utility model belongs to technical field of valve manufacturing, relates to a kind of safety valve, particularly Direct spring loaded safety valve.
Background technique
Direct spring loaded safety valve refer to rely on spring elastic pressure and by Sealing lockings such as the valve of valve or plungers, once when the high pressure producing after the pressure anomaly of pressurized container will overcome the spring pressure of safety valve, so blocking device is backed down, formed a pressure release passage, high pressure is released.
Existing Direct spring loaded safety valve, for example Chinese patent literature data discloses a kind of Duplex safety valve [application number 201320025286.X; Notice of authorization number: CN201346939U], include the valve body and the valve seat that are connected, valve body upper end is screwed with adjusting nut, in adjusting nut inner top and valve body, be installed with respectively with respect to upper spring guiding pad and lower spring guiding pad, in upper and lower spring guiding pad, be respectively equipped with spring seat, between two spring seats, be connected with Compress Spring, lower spring guiding pad lower end is provided with the flap corresponding with valve seat, flap is pushed against valve seat upper end by the pressure of Compress Spring, and the sealing surface that flap contacts with valve seat is provided with outwardly ring packing projection.
The Direct spring loaded safety valve of this kind of structure, controls the size of Compress Spring elastic force by the adjusting nut at rotation top, but can only regulate with feeling while regulating, and each amount regulating is not identical, and the precision of controlling Compress Spring elastic force is low; And the Direct spring loaded safety valve of this kind of structure, when pressure release, medium can enter into the top of flap, directly contacts with Compress Spring, easily corrodes Compress Spring, have influence on the elastic force of Compress Spring, once deviation appears in the elastic force of Compress Spring, the force value during pressure release of safety valve just there will be variation, has potential safety hazard, when pressure in pressurized container arrives transition point but normally during pressure release, easily cause fault, accident.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, and a kind of Direct spring loaded safety valve is provided, this Direct spring loaded safety valve good seal performance, and the precision of Regulation spring pressure is high.
The purpose of this utility model can realize by following technical proposal: Direct spring loaded safety valve, it is characterized in that, comprise valve body, handwheel and tubular upper cover, described valve body is connected mutually with described upper cover, described handwheel sleeve is outside described upper cover, the top of described upper cover is equidistantly distributed with several positioning recess, between described upper cover and described handwheel, be provided with location piece, described handwheel is pressed on described location piece and makes described location piece be positioned at described positioning recess place, described handwheel can drive location piece rotation to make described location piece from a positioning recess rotation to next positioning recess, between described upper cover and described valve body, there is stuffing box gland, described stuffing box gland makes the cavity in cavity and the described upper cover in described valve body not connected, in described upper cover, be provided with spring, one end of described spring is resisted against on described location piece, the other end is resisted against the trend that makes described stuffing box gland have all the time cut-off valve on described stuffing box gland to make valve closing.
Under the effect of spring force, stuffing box gland throttle down, when the pressure in pressurized container is greater than the elastic force of spring, the medium in pressurized container overcomes the resistance of spring and washes stuffing box gland pressure release open.Contact between stuffing box gland isolating valve intracoelomic cavity and upper cover cavity, the medium in pressurized container can not enter in cover cavity, and medium can not affect, corrode spring, safety valve good seal performance, the precision of spring control elastic force is good, long service life.When rotating handwheel, handwheel drives location piece to rotate, and each amount of rotating is all to rotate to next positioning recess from a positioning recess, and the angle of each rotation hand wheel is consistent, and the compression of spring or elongation are consistent, and Regulation spring elastic force precision is high.
In above-mentioned Direct spring loaded safety valve, described positioning recess is enlarging shape, and the two side of described positioning recess is all obliquely installed.Two side is obliquely installed, and facilitates handwheel to drive location piece to rotate.
In above-mentioned Direct spring loaded safety valve, the top of described upper cover also has and described positioning recess several transition slots one to one, and described positioning recess and described transition slot are spaced.Transition slot plays the effect of transition buffer, and transition slot facilitates location piece to rotate in next positioning recess from a positioning recess.
In above-mentioned Direct spring loaded safety valve, a sidewall of described transition slot vertically arranges, and another sidewall is obliquely installed, and the bottom of described transition slot is with respect to the more close described valve body in bottom of positioning recess.The sidewall length tilting is longer, and gradient is less, seamlessly transits, and facilitates location piece to rotate in next positioning recess along this sidewall.
In above-mentioned Direct spring loaded safety valve, described Direct spring loaded safety valve also comprises directional post and guide cylinder, described directional post part is located in described guide cylinder, one end of described directional post is connected with described location piece, the other end is connected mutually with the bottom of described guide cylinder, described spring housing is on described directional post, and the other end of described spring is resisted against the bottom of guide cylinder, and described guide cylinder is connected mutually with described stuffing box gland.Guide cylinder and directional post all play location, guiding to spring, the position that prevents spring is offset, guide cylinder is connected mutually with stuffing box gland, be that both move together, the position of stuffing box gland is moved and is directly passed to guide cylinder, directional post, thereby make spring-compressed or elongation, transmission is timely, precision is high.
In above-mentioned Direct spring loaded safety valve, one end of described directional post has restraining groove, has the limited part matching with described restraining groove on described location piece, and described restraining groove can only move towards the other end of described directional post location piece.Limited part has certain elasticity, and location piece inserts from one end of directional post, and limited part is embedded in restraining groove, and location piece is fixed, and need to apply certain external force and just can make limited part leave restraining groove, and location piece is moved towards the other end of directional post.
In above-mentioned Direct spring loaded safety valve, described stuffing box gland comprises sealed department, fixing part and joint, described connection part is between described sealed department and described fixing part, described fixing part is fixed on the joint of described upper cover and described valve body, and above-mentioned guide cylinder is fixed in described sealed department.Joint is softer, can move up and down, and plays the effect of buffering, and sealed department can be moved up and down.
In above-mentioned Direct spring loaded safety valve, the outside of described guide cylinder has annular groove, and the inner side of described stuffing box gland has convex annular edge, and described convex annular makes described guide cylinder be connected mutually with described stuffing box gland along being embedded in described annular groove.The internal diameter of sealed department and the external diameter of guide cylinder match, and the outer side wall of guide cylinder is close on the madial wall that is combined in sealed department, and the clamping concavo-convex with annular groove of convex annular edge is connected both mutually, when mobile, are to move together.
In above-mentioned Direct spring loaded safety valve, in described valve body, there is the valve seat protruding ringwise, the edge of described sealed department bottom has annular gear edge, and when valve is on closed state, described valve seat is resisted against described annular and keeps off along inner side.This kind of structure, can there is not left and right skew in the position of stuffing box gland, stuffing box gland sealed valve effective.
In above-mentioned Direct spring loaded safety valve, in described upper cover, be fixed with setting sleeve, the external diameter of the internal diameter of described setting sleeve and described guide cylinder matches.The edge of setting sleeve bottom outside is fixed on the joint of upper cover and valve body, and setting sleeve plays the effect of guiding to the movement of guide cylinder.
In above-mentioned Direct spring loaded safety valve, the upper also cover of described directional post has card, one end of described spring to be resisted against on described card.
In above-mentioned Direct spring loaded safety valve, on the madial wall of described handwheel, there are the some blend stops that vertically arrange, the week of described location piece laterally with described blend stop phase clamping.Blend stop drives location piece to rotate, simple in structure.
Compared with prior art, the Direct spring loaded safety valve that the utility model provides has the following advantages:
1, the every rotation of this spring type safety valve hand wheel angle is once all identical, the compression or the elongation that are each rotation spring are all the same, this kind of structure, be conducive to compression or the elongation of control spring accurately, the elastic force of control spring, control the elastic force of safety valve transition point, elastic force control accuracy is high, and the Safety performance of safety valve is good.
2, this Direct spring loaded safety valve has stuffing box gland, and stuffing box gland separates the inner chamber of the inner chamber of valve body and upper cover, and medium can not entered in the inner chamber of upper cover, spring in upper cover can not be corroded etc., the elastic force precision of spring is high, long service life, and safety valve Safety performance is good.
Accompanying drawing explanation
Fig. 1 is the overall structure explosive view of this Direct spring loaded safety valve.
Fig. 2 is the overall structure sectional view of this Direct spring loaded safety valve.
In figure, 1, valve body; 1a, valve seat; 2, handwheel; 2a, blend stop; 3, upper cover; 3a, positioning recess; 3b, transition slot; 4, location piece; 4a, limited part; 5, stuffing box gland; 5a, sealed department; 5a1, convex annular edge; 5a2, annular gear edge; 5b, fixing part; 5c, joint; 6, spring; 7, directional post; 7a, restraining groove; 8, guide cylinder; 8a, annular groove; 9, setting sleeve; 10, card.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1 and Figure 2, this Direct spring loaded safety valve comprises valve body 1, handwheel 2, upper cover 3, location piece 4, stuffing box gland 5, spring 6, directional post 7, guide cylinder 8, setting sleeve 9 and card 10.
The bottom of valve body 1 has water intake, and sidepiece has water outlet, and top is threaded connection and is fixed with upper cover 3, and upper cover 3 is tubular, along it, axially connects.Valve body 1 is fixed with stuffing box gland 5 with the threaded connection place of upper cover 3, stuffing box gland 5 comprises sealed department 5a, fixing part 5b and joint 5c, sealed department 5a is also tubular, be positioned at valve body 1, one end is airtight, the other end opening, opening peripheral edge edge is joint 5c, joint 5c is softer, and the circumferential outer edge of joint 5c is fixing part 5b, by valve body 1 and upper cover 3 screw threads, is connected and is made fixing part 5b be fixed on the joint of valve body 1 and upper cover 3.Stuffing box gland 5 separates valve body 1 and upper cover 3, and the inner chamber of valve body 1 is not communicated with mutually with the inner chamber of upper cover 3, and sealed department 5a can axially moving up and down along valve body 1.The edge, bottom of sealed department 5a has annular gear along 5a2, has annular valve seat 1a in valve body 1, when valve seat 1a is resisted against annular gear along the inner side of 5a2, and valve closing.
In upper cover 3 and valve body 1, be provided with directional post 7 and guide cylinder 8, one end of directional post 7 has restraining groove 7a, the other end is located in guide cylinder 8, and be connected mutually with the bottom of guide cylinder 8, one end of directional post 7 is fixed with location piece 4, location piece 4 axially has along it through hole running through, through hole has certain flexible annular stop 4a of portion, one end of directional post 7 is through location piece 4, the limited part 4a of location piece 4 is embedded in restraining groove 7a, location piece 4 and directional post 7 are connected mutually, as long as but apply certain external force, just can make location piece 4 move towards the other end of directional post 7, and location piece 4 can only move towards the other end of directional post 7.Spring 6 is enclosed within on directional post 7, and card 10 is also enclosed within on directional post 7, and one end of spring 6 is resisted against on card 10, and card 10 and location piece 4 is close to close, and the other end is resisted against on the bottom of guide cylinder 8.The week of guide cylinder 8 has annular groove 8a laterally, the inner side of sealed department 5a has the convex annular matching with annular groove 8a along 5a1, convex annular is embedded in annular groove 8a along 5a1, the outer side wall of guide cylinder 8 is close on the madial wall that is combined in sealed department 5a, and guide cylinder 8 and sealed department 5a are connected mutually.Spring 6 provides elastic force, makes the bottom of sealed department 5a be positioned at the upper sealed valve of valve seat 1a.
Between upper cover 3 and valve body 1, be also fixed with setting sleeve 9, the external diameter of the internal diameter of setting sleeve 9 and guide cylinder 8 matches, and setting sleeve 9 is positioned at the top of stuffing box gland 5, and guide cylinder 8 is through in setting sleeve 9, and setting sleeve 9 plays the effect of guiding to the movement of guide cylinder 8.
In the present embodiment, location piece equidistantly has the gulde edge of three protrusions for 4 weeks laterally outwardly, at interval of 120 °, has a gulde edge.The top of upper cover 3 has positioning recess 3a and transition slot 3b, positioning recess 3a and transition slot 3b are corresponding one by one, space spread configuration, the quantity of positioning recess 3a and transition slot 3b is also three, and during installation, three gulde edges are embedded into respectively in corresponding positioning recess 3a, again handwheel 2 is enclosed within to the outside of upper cover 3, handwheel 2 is pushed down location piece 4, makes gulde edge be positioned at positioning recess 3a and can not drop out easily, and location piece 4 can not rotate easily.On the madial wall of handwheel 2, have the some blend stop 2a that vertically arrange, when handwheel 2 rotates, blend stop 2a drives gulde edge, and location piece 4 is moved in a circle around directional post 7.Handwheel 2 rotates at every turn, all just to make a short pause a gulde edge being forwarded in a positioning recess 3a in next positioning recess 3a, this kind setting can be controlled the each amounts of rotation of handwheel 2, the compression, the elongation that are spring 6 can be controlled accurately, in actual production, also positioning recess 3a, transition slot 3b all can be made to four or five etc.Positioning recess 3a is opening-like, the two side of positioning recess 3a is all obliquely installed outwardly, this kind of structure, while facilitating handwheel 2 to rotate, drive location piece 4 to cross positioning recess 3a and enter into transition slot 3b, a side of transition slot 3b is vertical setting, and opposite side is obliquely installed, and seamlessly transits, this kind of structure, makes gulde edge slide in next positioning recess 3a along the sidewall of this inclination.The bottom of transition slot 3b, with respect to the more close valve body 1 in bottom of positioning recess 3a, facilitates gulde edge to be positioned at after transition slot 3b, easier entering in next positioning recess 3a under the effect of spring 6 elastic force, and rotation hand wheel 2 is laborsaving.
During pressure release, when the pressure in pressurized container is greater than the elastic force of spring 6, the elastic force that pressure overcomes spring 6 makes to move on sealed department 5a, directional post 7, guide cylinder 8, container decompression, now spring 6 is compressed, elastic force increases, when the pressure in pressurized container reduces to transition point, and sealed department 5a sealed valve again under the effect of spring 6 elastic force.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used valve body 1, valve seat 1a, handwheel 2, blend stop 2a, upper cover 3, positioning recess 3a, transition slot 3b, location piece 4, limited part 4a, stuffing box gland 5, sealed department 5a, convex annular along 5a1, annular gear along terms such as 5a2, fixing part 5b, joint 5c, spring 6, directional post 7, restraining groove 7a, guide cylinder 8, annular groove 8a, setting sleeve 9, cards 10 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (10)
1. Direct spring loaded safety valve, it is characterized in that, comprise valve body (1), handwheel (2) and tubular upper cover (3), described valve body (1) is connected mutually with described upper cover (3), described handwheel (2) is enclosed within outside described upper cover (3), the top of described upper cover (3) is equidistantly distributed with several positioning recess (3a), between described upper cover (3) and described handwheel (2), be provided with location piece (4), on location piece (4) described in described handwheel (2) is pressed in, making described location piece (4) be positioned at described positioning recess (3a) locates, described handwheel (2) can drive location piece (4) rotation to make described location piece (4) from a positioning recess (3a) rotation to next positioning recess (3a), between described upper cover (3) and described valve body (1), there is stuffing box gland (5), described stuffing box gland (5) makes the cavity in cavity and the described upper cover (3) in described valve body (1) not connected, in described upper cover (3), be provided with spring (6), one end of described spring (6) is resisted against on described location piece (4), the other end is resisted against the trend that makes described stuffing box gland (5) have all the time cut-off valve on described stuffing box gland (5) to make valve closing.
2. Direct spring loaded safety valve according to claim 1, is characterized in that, described positioning recess (3a) is enlarging shape, and the two side of described positioning recess (3a) is all obliquely installed.
3. Direct spring loaded safety valve according to claim 2, it is characterized in that, the top of described upper cover (3) also has and described positioning recess (3a) several transition slots (3b) one to one, described positioning recess (3a) and described transition slot (3b) are spaced, one sidewall of described transition slot (3b) vertically arranges, another sidewall is obliquely installed, and the bottom of described transition slot (3b) is with respect to the more close described valve body (1) in bottom of positioning recess (3a).
4. according to the Direct spring loaded safety valve described in claim 1 or 2 or 3, it is characterized in that, described spring (6) formula safety valve also comprises directional post (7) and guide cylinder (8), described directional post (7) part is located in described guide cylinder (8), one end of described directional post (7) is connected with described location piece (4), the other end is connected mutually with the bottom of described guide cylinder (8), described spring (6) is enclosed within on described directional post (7), the other end of described spring (6) is resisted against the bottom of guide cylinder (8), described guide cylinder (8) is connected mutually with described stuffing box gland (5).
5. Direct spring loaded safety valve according to claim 4, it is characterized in that, one end of described directional post (7) has restraining groove (7a), on described location piece (4), have the limited part (4a) matching with described restraining groove (7a), described restraining groove (7a) can only move towards the other end of described directional post (7) location piece (4).
6. Direct spring loaded safety valve according to claim 4, it is characterized in that, described stuffing box gland (5) comprises sealed department (5a), fixing part (5b) and joint (5c), between sealed department (5a) described in described joint (5c) is positioned at and described fixing part (5b), described fixing part (5b) is fixed on the joint of described upper cover (3) and described valve body (1), and above-mentioned guide cylinder (8) is fixed in described sealed department (5a).
7. Direct spring loaded safety valve according to claim 4, it is characterized in that, the outside of described guide cylinder (8) has annular groove (8a), the inner side of described stuffing box gland (5) has convex annular along (5a1), and described convex annular is embedded in described annular groove (8a) described guide cylinder (8) is connected mutually with described stuffing box gland (5) along (5a1).
8. Direct spring loaded safety valve according to claim 6, it is characterized in that, in described valve body (1), there is the valve seat (1a) protruding ringwise, the edge of described sealed department (5a) bottom has annular gear along (5a2), when valve is on closed state, described valve seat (1a) is resisted against described annular gear along (5a2) inner side.
9. Direct spring loaded safety valve according to claim 4, is characterized in that, in described upper cover (3), is fixed with setting sleeve (9), and the external diameter of the internal diameter of described setting sleeve (9) and described guide cylinder (8) matches.
10. according to the Direct spring loaded safety valve described in claim 1 or 2 or 3, it is characterized in that, on the madial wall of described handwheel (2), there are the some blend stops (2a) that vertically arrange, the week of described location piece (4) laterally with described blend stop (2a) phase clamping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320766682.8U CN203549029U (en) | 2013-11-28 | 2013-11-28 | Spring type safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320766682.8U CN203549029U (en) | 2013-11-28 | 2013-11-28 | Spring type safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203549029U true CN203549029U (en) | 2014-04-16 |
Family
ID=50467147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320766682.8U Expired - Lifetime CN203549029U (en) | 2013-11-28 | 2013-11-28 | Spring type safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203549029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114555993A (en) * | 2019-09-01 | 2022-05-27 | 塞尔达塑料工贸股份有限公司 | Pressure reducing valve |
-
2013
- 2013-11-28 CN CN201320766682.8U patent/CN203549029U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114555993A (en) * | 2019-09-01 | 2022-05-27 | 塞尔达塑料工贸股份有限公司 | Pressure reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170316 Address after: Yuhuan County dragon Township fishing village of Taizhou city in Zhejiang province 317609 Patentee after: ZHEJIANG WANDEKAI FLUID EQUIPMENT TECHNOLOGY Co.,Ltd. Address before: 317609 Yuhuan County fishing village, Zhejiang, Taizhou Patentee before: ZHEJIANG WANDEKAI COPPER INDUSTRY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
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| CX01 | Expiry of patent term |