CN203230902U - Hand-operated safety valve - Google Patents
Hand-operated safety valve Download PDFInfo
- Publication number
- CN203230902U CN203230902U CN 201320240800 CN201320240800U CN203230902U CN 203230902 U CN203230902 U CN 203230902U CN 201320240800 CN201320240800 CN 201320240800 CN 201320240800 U CN201320240800 U CN 201320240800U CN 203230902 U CN203230902 U CN 203230902U
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- CN
- China
- Prior art keywords
- spring
- safety valve
- jacking block
- spring mechanism
- top block
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a safety valve, in particular to a hand-operated safety valve. The hand-operated safety valve is arranged at the outlet side of a pipeline, and comprises a valve seat, a valve core and a spring mechanism, wherein the valve core is arranged on the valve seat; a spring is arranged in the spring mechanism; the spring mechanism is connected with the valve core; two ends of a spring mechanism shell are respectively provided with an upper top block and a lower top block; the spring is arranged between the upper top block and the lower top block; a hand wheel is connected with the lower top block after passing through the upper top block and the spring by a connecting rod; the valve seat consists of an upper base and a lower base which are arranged on the pipeline; and the upper base and the lower top block are clamped by a clamp, and are sealed by a clamp seal ring. Compared with the prior art, the hand-operated safety valve provided by the utility model is capable of simply controlling pressure, preventing the phenomenon that the elasticity is reduced due to the fact that the spring is influenced by high temperature for a long time, and is longer in service life.
Description
Technical field
The utility model relates to a kind of safety valve, particularly a kind of manual safety valve.
Background technique
The open-shut device of safety valve is subjected to be in normally off under the external force effect, and the pressure medium in equipment or pipeline raises, and opens automatically when surpassing specified value, prevents that by discharge medium outside system pressure medium surpasses regulation numerical value in pipeline or the equipment.
Safety valve belongs to the self-acting valve class, is mainly used on boiler, pressurized container and the pipeline, and pilot pressure is no more than specified value, and personal safety and equipment have been moved important protective action.
The spring Low lift safety valve is to utilize the power of compression spring to come the power of balanced action on flap.The decrement of spring can be regulated by the adjustment nut that rotates above it, utilizes this structure just can proofread and correct the cracking pressure of safety valve as required.The shortcoming of this safety valve is that added load can change along with the unlatching of valve, and namely along with the rising of flap, the decrement of spring increases, and the power that acts on the flap also and then increases.This rapid unlatching to safety valve is disadvantageous.In addition, the spring on the valve can reduce owing to the influence that is subjected to high temperature for a long time makes elastic force.When being used on the higher container of temperature, usually to consider the heat insulation or heat dissipation problem of spring, thereby make the structure complexity that becomes.
The model utility content
Technical problem to be solved in the utility model is: a kind of manual safety valve is provided.
The utility model solves described technical problem by following proposal: a kind of manual safety valve, be installed on the pipe outlet side, the spool and the spring mechanism that comprise valve seat, are located on the valve seat constitute, and in the described spring mechanism spring are set, described spring mechanism is connected with spool, wherein:
Be respectively equipped with jacking block and following jacking block at spring mechanism shell two ends, described spring is located between the upper and lower jacking block, handwheel by a connecting rod pass jacking block, spring is connected with following jacking block;
Described valve seat is made of the upper bed-plate, the lower bottom base that are located on the pipeline, being tightened by clip of upper bed-plate and following jacking block, and by the sealing of clip seal ring, is used for sealing and heat insulation.Be particularly useful for the manual safety valve that pilot pressure is no more than 3KG, by the adjusting to handwheel, control spring pressure, make spool under the elastic force effect of spring mechanism, can remain on 3KG, utilize mechanical force control system pressure, have the pressure release effect, can be installed on the pipe outlet side of mechanical devices such as plate type heat exchanger, sterilization machine, homogenizer, give system decompression.
On the such scheme basis, valve core seal ring is established in described spring mechanism lower end and spool joint.
On the such scheme basis, described spring is stainless steel, and elastic force is 10-20Mpa.
On the such scheme basis, be provided with O type circle along pipe surface.
The utility model compared with prior art, superiority is: (1) is by handwheel pilot pressure simply; (2) clip seal ring and valve core seal ring play sealing and heat insulation effect, prevent that spring is subjected to temperatures involved that elastic force is diminished for a long time; (3) set jacking block under the spring, prevent that spring from causing deformation to influence elastic force because of for a long time stressed, increases the service life.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Label declaration in the accompanying drawing:
1---spring; 2---spring mechanism;
3---clip; 4---the spring mechanism shell;
5---go up jacking block; 6---following jacking block;
7---lower bottom base; 8---pipeline;
9---upper bed-plate; 10---valve core;
11---the clip seal ring; 12---handwheel;
13---the valve core seal ring; 14---O type circle;
15---connecting rod.
Embodiment
Please 1 pair of the utility model further specifies by reference to the accompanying drawings.
A kind of manual safety valve is installed on pipeline 8 outlet sides, and the spool 10 and the spring mechanism that comprise valve seat, are located on the valve seat constitute, and described spring mechanism is connected with spool 10, wherein:
Described spring mechanism is by comprising spring mechanism shell, spring 1, be respectively equipped with jacking block 5 and following jacking block 6 at spring mechanism shell two ends, described spring 1 is located between the upper and lower jacking block 5,6, handwheel 12 by a connecting rod 15 pass jacking block 5, spring 1 is connected with following jacking block 6, described upper and lower jacking block 5,6 is used for the elastic displacements of control spring 1;
Described valve seat is made of the upper bed-plate 9, the lower bottom base 7 that are located on the pipeline 8, being tightened by clip 3 of upper bed-plate 9 and following jacking block 6, and by clip seal ring 11 sealings of playing heat-blocking action, spring mechanism 2 is not moved after by pressure jack-up.
Valve core seal ring 13 is established in described spring mechanism lower end and spool 10 joints, is used for sealing and heat insulation.
Described spring is the stainless steel spring of elastic force 10-20Mpa.
Described upper bed-plate 9 and lower bottom base 4 are provided with O type circle 14 along the surface of contact of pipeline 8.
The pilot pressure of described manual safety valve is no more than 3KG, by the adjusting to handwheel 12, can make pilot pressure remain on 3KG.
The manual safety valve in use with mechanical force control system pressure, has the pressure release effect entirely, can be installed on mechanical pipe outlet sides such as plate type heat exchanger, sterilization machine, homogenizer, gives system decompression.By handwheel 12 pressure of spring 1 is controlled at 3KG earlier, when the pressure in the pipeline 8 was no more than 3KG, the underpressure in the pipeline 8 was to back down valve core 10; When pressure surpasses 3KG, pressure in the pipeline 8 will be with valve core 10 to spring 1 jack-up, valve core 10 is opened, spring 1 compression, carry out pressure release by pipeline 8, along with after the pressure in the pipeline 8 reaches balance with the pressure of spring 1 gradually, spring 1 restores to the original state, valve core 10 is by closing, and following jacking block 6 places on the clip 3 again.Clip seal ring 11 and valve core seal ring 13 play sealing and heat insulation effect, prevent that spring 1 is subjected to temperatures involved that elastic force is diminished for a long time, spring is set jacking block 61 time simultaneously, prevent that spring 1 from causing deformation to influence elastic force because of for a long time stressed, increased the working life of spring, and the use of safety valve is taken life by force and is increased.
Claims (4)
1. manual safety valve, be installed on pipeline (8) outlet side, the spool (10) and the spring mechanism (2) that comprise valve seat, are located on the valve seat constitute, and spring (1) is set in the described spring mechanism (2), described spring mechanism (2) is connected with spool (10), it is characterized in that:
Be respectively equipped with jacking block (5) and following jacking block (6) at spring mechanism shell (4) two ends, described spring (1) is located between the upper and lower jacking block (5,6), handwheel by a connecting rod (15) pass jacking block (5), spring (1) is connected with following jacking block (6);
Described valve seat is made of the upper bed-plate (9), the lower bottom base (7) that are located on the pipeline (8), being tightened by clip (3) of upper bed-plate (9) and following jacking block (6), and is sealed by clip seal ring (11).
2. manual safety valve according to claim 1, it is characterized in that: valve core seal ring (13) is established in described spring mechanism (2) lower end and spool (10) joint.
3. manual safety valve according to claim 1, it is characterized in that: described spring (1) is the stainless steel spring of elastic force 10-20Mpa.
4. manual safety valve according to claim 1, it is characterized in that: described valve seat and tube contacts face are provided with O type circle (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320240800 CN203230902U (en) | 2013-05-07 | 2013-05-07 | Hand-operated safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320240800 CN203230902U (en) | 2013-05-07 | 2013-05-07 | Hand-operated safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230902U true CN203230902U (en) | 2013-10-09 |
Family
ID=49287029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320240800 Expired - Fee Related CN203230902U (en) | 2013-05-07 | 2013-05-07 | Hand-operated safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807472A (en) * | 2013-12-02 | 2014-05-21 | 青岛蓝图文化传播有限公司市南分公司 | Safety valve |
-
2013
- 2013-05-07 CN CN 201320240800 patent/CN203230902U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807472A (en) * | 2013-12-02 | 2014-05-21 | 青岛蓝图文化传播有限公司市南分公司 | Safety valve |
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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: 20131009 Termination date: 20190507 |