CN211039833U - Full-automatic pressure and temperature safety valve - Google Patents

Abstract

The utility model provides a full-automatic pressure temperature relief valve belongs to valve technical field. It has solved the easy problem of damaging and the not good leakproofness of current relief valve handle. This product is including having the air inlet end, the valve body of exhaust end and installation end, be equipped with the gas passing port of intercommunication air inlet end and exhaust end in the valve body, be fixed with the retaining ring on the gas passing port, be equipped with the case in the valve body, the case lower extreme is equipped with sealed the pad, sealed pad supports with the retaining ring and leans on to form sealedly, the air inlet end inboard is equipped with temperature control component, the case upper end still is connected with the valve rod, the installation end is worn out and exposes outside valve rod upper end, valve rod upper end still articulates there is the handle, still be equipped with the protective cap between handle and the installation end up end, the protective cap cladding installation end is outer and can slide with the valve rod relative installation end together, still be equipped with. The product has the advantages of greatly prolonged service life and higher safety.

Description

Full-automatic pressure and temperature safety valve

Technical Field

The utility model belongs to the technical field of the valve, a relief valve is related to, especially, relate to a full-automatic pressure temperature relief valve.

Background

The safety valve is a special valve, wherein the opening and closing part is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value. The safety valve is mainly used for boiler, pressure container and pipeline, and its control pressure is not greater than specified value, so that it can play important role in protecting personal safety and equipment operation.

Generally, safety valves on the market are composed of a valve body, a valve core and a spring, the valve body is in a normally closed state under the action of the elastic force of the spring on the valve core, when the medium pressure is too high, the pressure is reduced under the action of overcoming the elastic force of the spring to jack the valve core to achieve flow discharge, and when the pressure is not enough to offset the elastic force of the spring, the valve body is closed again. The valve core is usually provided with a sealing element, i.e. an annular sealing gasket or an O-ring, which forms a seal with the valve body, and the sealing effect of the sealing element is gradually weakened after long-term use, which may cause side leakage to reduce or eliminate the pressure in the rear-end pipeline, thereby affecting the operation of the equipment. The safety valve is characterized in that a handle is usually connected to the outer portion of the safety valve, the handle is connected with the valve core through a valve rod, the handle is used for manually opening the safety valve to release pressure, and the handle and the valve core are in a linkage state, so that the handle can be linked together when the safety valve is automatically opened at ordinary times, and the handle is easily damaged or abraded along with increase of use times. Therefore, the problem of solving the above existing problem is that the matters to be handled are not buffered at present.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a full-automatic pressure temperature relief valve. The safety valve solves the technical problems that the handle of the existing safety valve is easy to damage and the sealing performance is poor.

The purpose of the utility model can be realized by the following technical proposal:

the full-automatic pressure and temperature safety valve is characterized in that a protective cap is further arranged between the handle and the upper end face of the mounting end, covers the mounting end and can slide relative to the mounting end together with the valve rod, a convex part extending towards the direction of the gas passing port is further arranged on the sealing pad, and the convex part covers the upper end of the retainer ring to form sealing.

The protection cap is arranged between the handle and the upper end face of the mounting end, the handle is of a structure similar to L, when the safety valve does not need to exhaust, the lower side face of the handle abuts against the upper end face of the protection cap, when the safety valve exhausts, the valve core can drive the valve rod to move upwards, the protection cap covers the mounting end and can slide relative to the mounting end together with the valve rod, the plane of the lower end of the handle still abuts against the upper end face of the protection cap, the states of the protection cap and the handle are opposite and are not changed by the movement of the valve rod.

The above situations are all defects generated under the condition that the installation position of the safety valve is correct, and when the installation position of the safety valve is inclined, the handle is used for manually lifting the valve rod to enable the valve core to be linked to play a role in manual pressure relief. The handle is used for a lever-like principle, one end of the handle is abutted against the valve body to lift the other end of the handle, so that the valve rod connected between the two ends is lifted, and the means belongs to the conventional technology and is not explained redundantly. When the relief valve need exhaust, the valve rod normal lifting because the crooked handle that makes of relief valve rotates very easily, and the one end of handle is very easy as the fulcrum and is being held up the valve rod and make the valve rod can't playback after the exhaust is accomplished again, causes the relief valve to be in normally open state and leads to the fact unnecessary loss for our user. So this product can be uplifted together with the valve rod through setting up the protective sheath, and the handle supports and leans on the protective sheath, so can not take place to rotate the circumstances such as round the pin joint and take place for the life of handle obtains promoting. Valve rod and protective sheath also can relative slip, when the relief valve is opened to needs manual, only need normally rotate the handle can, set up the operation like this and original, thereby it is normally open that nevertheless can be fine to avoid the relief valve to receive the handle screens, and this product convenient to use and security are higher.

The gas port of this product is last to have the connection retaining ring, and the retaining ring is the loop configuration, and the retaining ring with cross gas port threaded connection, the upper end of retaining ring exposes outside crossing the gas port, and the direct terminal surface of lower terminal surface of conventional sealed pad supports with retaining ring up end and leans on the air admission that stops the gas port, the sealed of such structure can worsen gradually along with time, the leading cause is the ageing of sealing member. And this product sealing pad still is equipped with the convex part that extends towards the gas port direction, and the convex part cladding retaining ring upper end forms sealedly. The arrangement obviously increases the contact area of the upper end of the whole retainer ring wrapped in the sealing gasket, further enhances the sealing effect, and definitely has better sealing effect than the conventional sealing gasket used in the market even if the sealing gasket is aged.

In the full-automatic pressure and temperature safety valve, the outer peripheral surface of the check ring is provided with an annular bulge, the lower end surface of the bulge abuts against the upper end surface of the bulge, and the bulge, the bulge and the outer peripheral surface of the valve core are flush.

The bulge can play a role in positioning, and plays a role in supporting the lower end of the convex part, so that the service life of the sealing gasket is effectively prolonged, and the convex part and the bulge are abutted to further enhance the sealing property.

In the above full-automatic pressure and temperature safety valve, the upper end of the retainer ring is further provided with a tapered groove, and the convex part is provided with a notch which forms a stop with the tapered groove.

The conical groove has an inclined groove wall and the recess also has an inclined inner wall, the groove wall and the inner wall being in contact and abutting together, the arrangement being such that the sealing is further enhanced.

In the above-mentioned full-automatic pressure temperature relief valve, the valve rod is also sleeved with a spring, and the elasticity of the spring acts on the valve core to make the valve core always keep a trend of abutting against the air passing hole.

In the above full-automatic pressure and temperature safety valve, the lower end of the temperature control assembly extends out of the air inlet end and is exposed outside.

Compared with the prior art, the product has the advantages that:

1. the handle lower extreme supports and leans on the up end of protective cap, and the state of protective sheath and handle is relative, does not receive the valve rod motion and changes, and this product makes being difficult to of handle damage through the setting of protective cap, and life obtains strengthening greatly.

2. When the safety valve is installed askew, the safety valve can be well prevented from being normally opened by the handle clamping position through the protective sleeve, and the safety valve is convenient to use and improved in safety.

3. The convex part is covered on the upper end of the retainer ring to form a seal, so that the contact area of the seal of the retainer ring and the retainer ring is obviously increased, the sealing effect is further enhanced, and the sealing effect is certainly better than that of the conventional sealing gasket used on the market even if the gasket is aged.

Drawings

Fig. 1 is a half sectional view of the present invention.

In the figure, 1, a valve body; 11. an air inlet end; 12. an exhaust end; 13. an installation end; 14. a gas passing port; 2. a retainer ring; 21. a protrusion; 22. a tapered groove; 3. a valve core; 4. a gasket; 41. a convex portion; 411. a recess; 5. a valve stem; 6. a handle; 7. a protective cap; 8. a spring; 9. a temperature control component.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the full-automatic pressure and temperature safety valve comprises a valve body 1 with an air inlet end 11 at the lower end and an exhaust end 12 at the left end, a mounting end 13 is arranged at the upper end of the valve body 1 opposite to the air inlet end 11, a cylindrical valve core 3 with an opening at the upper end closed at the lower end is arranged in the mounting end 13, a connecting part for fixing a valve rod 5 is arranged on the bottom surface of the inner side of the valve core 3, the connecting part is fixedly connected with the lower end of the valve rod 5, the upper end of the valve rod 5 extends out of the mounting end 13, and the extending. The inner side of the port of the mounting end 13 is further in threaded connection with a limiting piece, and a spring 8 is arranged between the limiting piece and the bottom surface of the inner side of the valve core 3. The valve rod 5 penetrates through the limiting part and can slide relative to the limiting part, the spring 8 is sleeved on the outer side of the valve rod 5, and the elastic force of the spring 8 acts on the bottom surface of the inner side of the valve core 3, so that the valve core 3 has a tendency of moving towards the direction of the air inlet end 11. Air inlet 14 has been seted up to the inboard of inlet end 11, and inlet end 11 and exhaust end 12 communicate through crossing the mouth of a river, cross the inboard threaded connection of air inlet 14 and have retaining ring 2, and retaining ring 2 is the annular and the upper end exposes outside air inlet 14. The lower end face of the valve core 3 is provided with a sealing gasket 4, and the valve core 3 enables the sealing gasket 4 to abut against the upper end of the retainer ring 2 under the action of the elastic force of the spring 8. The limiting piece is screwed through the threads, so that the elastic force of the spring 8 can be adjusted, and the peak pressure of the gas to be decompressed can be adjusted.

The protection cap 7 coated outside the mounting end 13 is further arranged between the handle 6 and the upper end face of the mounting end 13, the lower side face of the handle 6 abuts against the upper end face of the protection cap 7, the protection cap 7 can slide together with the valve rod 5 relative to the mounting end 13, when the valve core 3 needs to be opened manually by using the handle 6, the handle 6 can be normally rotated to open, the protection cap 7 can also slide relative to the valve rod 5, without rotating the handle 6, the protection cap 7 can always abut against the lower side face of the handle 6 and can slide up and down relative to the mounting end 13, because the handle 6 is of a structure similar to the L shape, when the safety valve does not need to exhaust, the plane at the lower end of the valve rod 5 abuts against the upper end face of the protection cap 7, when the safety valve exhausts, the valve core 3 can move upwards with the valve rod 5, the protection cap 7 can always overlap the mounting end 13 and can slide together with the valve rod 5, the plane at the lower end face of the protection cap 6 abuts against the upper end face of the handle 7, the state of the protection cap and the handle 6 is opposite to the state, which is not changed by the movement of the valve rod 5, the safety valve is not easy to be changed by the valve body, and the valve body 5 is damaged by the repeated lifting of the handle 6, the handle is not easy to be damaged, and the handle 6, the handle 6 is not easy to be damaged, and the handle 5, and the handle is not easy to be damaged, and the handle 5 is not easy to be damaged by the handle when the handle is hinged to be damaged, the handle 5.

The above situations are all defects generated under the condition that the installation position of the safety valve is correct, and when the installation position of the safety valve is inclined, the handle 6 is used for manually lifting the valve rod 5 so that the valve core 3 is linked to play a role of manual pressure relief. The handle 6 is lifted up with one end against the valve body 1 and the other end by a lever-like principle so that the valve stem 5 connected between the two ends is lifted up, which means is conventional and will not be explained herein. When the relief valve needs to exhaust, valve rod 5 normal lifting because the crooked handle 6 of making of relief valve rotates very easily, and the one end of handle 6 makes valve rod 5 can't playback after the exhaust is accomplished as the fulcrum very easily, causes the relief valve to be in normally open state and leads to the fact unnecessary loss for our user. So this product can be lifted together with valve rod 5 through setting up the protective sheath, and handle 6 supports and leans on the protective sheath, so can not take place to rotate the circumstances such as round the pin joint and take place for handle 6's life obtains promoting. Valve rod 5 and protective sheath also can relative slip, when the relief valve is opened to needs manual, only need normally rotate handle 6 can, set up the operation like this and original, thereby it is normally open that the relief valve of having avoided that nevertheless can be fine receives 6 screens of handle, and this product convenient to use and security are higher.

The gasket 4 is further provided with a convex portion 41 extending toward the air vent 14, and the convex portion 41 covers the upper end of the retainer ring 2 to form a seal. The gas port 14 of this product is last to have and to connect retaining ring 2, and retaining ring 2 is the loop configuration, and retaining ring 2 and gas port 14 threaded connection, and the upper end of retaining ring 2 exposes outside gas port 14, and the direct lower terminal surface of conventional sealed 4 of filling up leans on with retaining ring 2 last port and blocks the air inlet of gas port 14, and the sealed of such structure can worsen gradually along with time, and the leading cause is the ageing of sealing member. The product sealing gasket 4 is also provided with a convex part 41 extending towards the air passing port 14, and the convex part 41 covers the upper end of the retainer ring 2 to form sealing. The arrangement is such that the contact area of the upper end of the whole retainer ring 2 wrapped in the sealing gasket 4 is obviously increased, the sealing effect is further enhanced, and the sealing effect is certainly better than that of the conventional sealing gasket 4 used on the market even if the gasket is aged.

The outer peripheral surface of the retainer ring 2 is also provided with an annular bulge 21, the lower end surface of the convex part 41 abuts against the upper end surface of the bulge 21, the convex part 41 and the outer peripheral surface of the valve core 3 are flush, and the lower end surface of the bulge 21 abuts against a positioning groove formed in the water passing opening to play a role in limiting. The protrusion 21 can play a role in positioning and a role in supporting the lower end of the protrusion 41, so that the service life of the gasket 4 is effectively prolonged, and the sealing performance is further enhanced by the protrusion 41 abutting against the protrusion 21. The upper end of the retainer ring 2 is further provided with a tapered groove 22, the convex part 41 is provided with a notch 411 which forms a stop with the tapered groove 22, the tapered groove 22 is provided with an inclined groove wall, the notch 411 is also provided with an inclined inner wall, and the groove wall is contacted with the inner wall and abuts against the inner wall, so that the sealing performance is further enhanced.

The inner side of the air inlet end 11 is provided with a temperature control assembly 9 which moves towards the valve core 3 along with the temperature rise and jacks up the valve core 3. Temperature control assembly 9 is including being long banding casing, the sealed upper end open-ended inner chamber of lower extreme has in the casing, be equipped with long banding ejector pin in the inner chamber, the ejector pin upper end exposes outside the casing, still be equipped with in the casing and can push up the medium of ejector pin to the outer top of inner chamber along with the temperature rise, like this along with the outside temperature rise ejector pin outwards motion, the position of ejector pin is in the below of case 3, continue to rise when the temperature, then the ejector pin up end can support with case 3 lower extreme and lean on, thereby will give case 3 and overcome the power of 8 elasticity of spring and make case 3 upward movement make sealed 4 and retaining ring 2 part, just so make gas can follow gas port 14 through discharging from exhaust end 12, reach the effect of pressure release. The port department of casing still is equipped with the fixture block, and the ejector pin overcoat that is located the casing is equipped with elastic element, and elastic element one end is supported and lean on the fixture block lower extreme other end and the protruding lug of ejector pin lower extreme and support and lean on, and the temperature reduces in valve body 1 after the pressure release is accomplished, and the ejector pin can be under elastic element's elasticity effect playback and make valve body 1 close.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (5)

1. The full-automatic pressure and temperature safety valve comprises a valve body (1) with an air inlet end (11), an air outlet end (12) and a mounting end (13), wherein an air passing port (14) communicated with the air inlet end (11) and the air outlet end (12) is formed in the valve body (1), a check ring (2) is fixed on the air passing port (14), a valve core (3) is arranged in the valve body (1), a sealing gasket (4) is arranged at the lower end of the valve core (3), the sealing gasket (4) is abutted against the check ring (2) to form sealing, a temperature control assembly (9) moving towards the direction of the valve core (3) along with the rise of temperature and ejecting the valve core (3) is arranged on the inner side of the air inlet end (11), a valve rod (5) is further connected to the upper end of the valve core (3), the upper end of the valve rod (5) penetrates through the mounting end (13) and is exposed outside, and a handle (6) is further hinged to the upper end of the, protective cap (7) cladding installation end (13) is outer and can slide relatively installation end (13) together with valve rod (5), still be equipped with on sealed pad (4) and cross convex part (41) that gas port (14) direction extended, convex part (41) cladding forms sealedly outside retaining ring (2) upper end.

2. The fully automatic pressure and temperature safety valve according to claim 1, wherein an annular protrusion (21) is arranged on the outer peripheral surface of the retainer ring (2), the lower end surface of the protrusion (41) abuts against the upper end surface of the protrusion (21), and the outer peripheral surfaces of the protrusion (21), the protrusion (41) and the valve core (3) are all flush.

3. The fully automatic pressure and temperature safety valve according to claim 2, characterized in that the upper end of the retainer ring (2) is further provided with a tapered groove (22), and the convex part (41) is provided with a notch (411) which forms a stop with the tapered groove (22).

4. The fully automatic pressure and temperature safety valve according to claim 1, 2 or 3, characterized in that the valve rod (5) is sleeved with a spring (8), and the elastic force of the spring (8) acts on the valve core (3) to enable the valve core to have the tendency of always keeping against the air passing port (14).

5. The fully automatic pressure and temperature safety valve according to claim 4, characterized in that the lower end of the temperature control component (9) is exposed outside through the air inlet end (11).

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