CN211231745U - Double-seal spring type safety valve - Google Patents
Double-seal spring type safety valve Download PDFInfo
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- CN211231745U CN211231745U CN201922233731.1U CN201922233731U CN211231745U CN 211231745 U CN211231745 U CN 211231745U CN 201922233731 U CN201922233731 U CN 201922233731U CN 211231745 U CN211231745 U CN 211231745U
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Abstract
The utility model discloses a dual seal spring formula relief valve aims at solving the not good not enough of relief valve seal effect. The utility model discloses an including the valve body, the disk seat, the valve barrel, closely install the connecting seat between valve body and the valve barrel, install the valve rod and set the spring in the valve barrel, the valve clack is connected to the valve rod lower extreme, connect bellows between valve clack and the connecting seat, the disk seat upper end is equipped with sealed bulge loop, the connection of valve clack lower extreme compresses tightly the pad, compress tightly and install O type circle between filling up outer wall and the mounting groove lateral wall, it extrudes the clearance to compress tightly to be equipped with between filling up lower extreme edge and the mounting groove opening edge, O type circle stretches out and extrudes the clearance, it is close to the upper portion position to compress tightly filling up the outer wall, the mounting groove lateral wall is close to the bottom position, form the pressure accumulation cavity between the O type circle three, it is equipped with the through-flow groove on the upper.
Description
Technical Field
The utility model relates to a relief valve, more specifically say, it relates to a double seal spring formula relief valve.
Background
In industrial production, a safety valve is the most commonly used overpressure protection device capable of continuously working, and under certain working conditions, special materials (such as titanium) are often required to be used, but the sealing of the safety valve is difficult due to the fact that the materials are limited in characteristics and cannot be subjected to surfacing welding. The sealing mode of the safety valve commonly used at present mostly adopts single metal to metal sealing or metal to elastic material sealing, and the sealing effect is not good many times.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the not good not enough of relief valve seal effect provides a double seal spring relief valve, and it has double seal characteristic, and is sealed effectual.
In order to solve the technical problem, the utility model discloses a following technical scheme: a double-seal spring type safety valve comprises a valve body, a valve seat and a valve sleeve, wherein a connecting seat is tightly installed between the valve body and the valve sleeve, the valve seat is tightly installed in the valve body, a valve rod and a setting spring are installed in the valve sleeve, the setting spring is abutted between the valve rod and the valve sleeve, the valve rod penetrates through the connecting seat, the lower end of the valve rod is connected with a valve clack, a corrugated pipe is connected between the valve clack and the connecting seat, a sealing convex ring is arranged at the upper end of the valve seat, a mounting groove is formed in the lower surface of the valve clack, a pressing pad is connected in the mounting groove, an O-shaped ring is installed between the outer wall of the pressing pad and the side wall of the mounting groove, an extrusion gap is formed between the lower end edge of the pressing pad and the opening edge of the mounting groove, the O, the through flow groove is communicated between the pressure accumulation cavity and the through flow hole, one part of the upper end surface of the sealing bulge is abutted against the O-shaped ring, and the other part of the upper end surface of the sealing bulge is abutted against the lower surface of the pressing pad.
The safety valve is pressed down by the valve clack under the action of the setting spring, so that one part of the upper end surface of the sealing bulge at the upper end of the valve seat is abutted against the O-shaped ring, and the other part of the upper end surface of the sealing bulge at the upper end of the valve seat is abutted against the lower surface of the pressing pad. The pressing pad and the sealing bulge are abutted to form a metal-to-metal sealing mode, the sealing bulge and the O-shaped ring are abutted to form a metal-to-elastic material sealing mode, and the two sealing modes act together to greatly improve the sealing effect. After the medium gets into the disk seat, get into pressure accumulation cavity through discharge orifice, through-flow groove, the pressure effect of high-pressure medium circles at the O type, makes O type circle extrude to the extrusion gap, makes O type circle more inseparable butt to sealed protruding, improves sealed effect. The double-sealing spring type safety valve has double sealing characteristics and good sealing effect.
As preferred, O type circle cross-section profile edge divide into the deformation zone, valve clack laminating district, the pressure district, compress tightly pad laminating district, valve clack laminating district sets up with compressing tightly the pad laminating district relatively, be equipped with the recess on the mounting groove lateral wall, the recess includes the changeover portion, valve clack laminating section, the deformation section, the guide section, changeover portion and the equal slope setting of guide section, valve clack laminating section and deformation section all are the arc, it compresses tightly pad laminating section to be equipped with curved on the outer wall of lower extreme to compress tightly, the pressure district corresponds with the pressure storage cavity and arranges in between changeover portion and the compression pad outer wall, valve clack laminating district and valve clack laminating section adaptation and closely laminate, the deformation district corresponds with the deformation section and is equipped with the deformation clearance between district and the deformation section, compress tightly pad laminating district and compress tightly pad.
The valve clack laminating area of O type circle just closely laminates with the valve clack laminating section adaptation of recess, compresses tightly to fill up the laminating area and compress tightly to fill up laminating section adaptation and closely laminate to realize the steady reliable installation of O type circle. A deformation gap is formed between the deformation zone and the deformation section, so that a deformation space is provided for the O-shaped ring. The guide section plays a role in guiding the O-shaped ring, and the O-shaped ring is conveniently extruded out towards the direction of the extrusion gap in the deformation process.
As preferred, the changeover portion is from last to down the setting of inclining outwards, and the direction section is from last to down the setting of inclining inwards, and the contained angle of changeover portion and horizontal plane is 10 degrees, and the contained angle of direction section and horizontal plane is 20 degrees. The obliquely arranged transition section facilitates the flow of the medium. The inclination angle of the guide section is reasonable, the poor guide effect can not be caused by the over-small angle, and the clamping effect on the O-shaped ring can not be influenced by the over-large angle.
Preferably, the outer edge of the lower surface of the pressing pad is provided with a sealing boss, the lower surface of the sealing boss is lower than the lower surface of the valve clack, and the upper end face of the sealing boss abuts against the lower surface of the sealing boss. The sealing boss protrudes out of the lower surface of the pressing pad, and the sealing effect is better after the sealing boss is abutted to the sealing boss.
Preferably, the circulation groove is circular, a plurality of transverse grooves are uniformly distributed at the edge position of the upper surface of the compression pad, a plurality of vertical grooves are correspondingly arranged on the outer wall of the compression pad and the transverse grooves one by one, the transverse grooves are communicated between the circulation groove and the vertical grooves, and the vertical grooves are communicated with the pressure storage cavity. The structure arrangement makes the medium flow into the pressure accumulation cavity through the through hole more convenient and reliable.
Preferably, the lower end of the valve rod is connected with a valve clack seat, and the valve clack is installed at the lower end of the valve clack seat. The valve clack seat is arranged to facilitate installation of the valve clack.
Preferably, the connecting seat is provided with a positioning sleeve extending downwards, the valve flap seat is of an inverted T-shaped structure, and the small-diameter part of the valve flap seat is movably sleeved in the positioning sleeve. The positioning sleeve has good positioning effect on the valve rod, so that the lifting process of the valve rod is more stable and reliable, and the phenomenon of deviation cannot occur.
Preferably, the valve clack seat is provided with a positioning groove on the lower end face, the valve clack is installed in the positioning groove in an adaptive mode, the outer edge of the lower end of the valve clack seat is provided with a pressure storage ring extending downwards, the inner wall of the pressure storage ring is arranged in a downward inclining mode from top to bottom, the upper end of the valve seat is connected with an adjusting ring in a threaded mode, a chamfer is arranged on the inner wall of the upper end of the adjusting ring, a lower pressure storage ring groove is formed between the chamfer and the outer wall of the upper end. The upper pressure storage ring groove and the lower pressure storage ring groove can accumulate pressure, so that the valve clack can be conveniently opened, and the adjusting ring can rotate to adjust the upper position and the lower position, so that the size of the lower pressure storage ring groove is adjusted, and the fine adjustment of the opening pressure of the valve clack is realized.
Preferably, the upper end of the valve sleeve is provided with a connecting sleeve, the outer wall of the connecting sleeve is connected with a valve cap, the inner wall of the connecting sleeve is in threaded connection with a sleeve, the valve rod is movably sleeved with the sleeve, the upper end of the valve rod extends out of the sleeve, the outer wall of the upper end of the valve rod is provided with online detection threads, the valve rod is sleeved with an upper spring seat and a lower spring seat, the setting spring is installed between the upper spring seat and the lower spring seat, the upper spring seat abuts against the. The sleeve plays a good positioning role in the valve rod. The upper end of the valve rod is provided with an online detection thread, so that online verification is facilitated.
Compared with the prior art, the beneficial effects of the utility model are that: the double-sealing spring type safety valve has double sealing characteristics and good sealing effect.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the valve flap and the pressing pad of the present invention;
fig. 3 is a top view of the tamp pad of the present invention;
FIG. 4 is a partially enlarged schematic view of the O-ring connection of the present invention;
in the figure: 1. the valve comprises a valve body, a valve seat, a valve body, a valve sleeve, a valve seat, a connecting seat, a valve rod, a setting spring, a valve clack, a connecting sleeve, a valve bonnet, a sleeve, an online detection thread, a valve rod, a setting spring, a valve clack, a sealing convex ring, a connecting sleeve, a valve bonnet, a sleeve, a valve clack, a pressure storage cavity, a pressure channel, a pressure storage cavity, a pressure channel, a pressure storage cavity, a pressure channel, a pressure, 42. a pad disc 43, a locking sleeve 44 and a locking groove.
Detailed Description
The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:
example (b): a double-seal spring type safety valve (see attached figures 1 to 4) comprises a valve body 1, a valve seat 2 and a valve sleeve 3, wherein a connecting seat 4 is tightly installed between the valve body and the valve sleeve, the valve seat is tightly installed in the valve body, a valve rod 5 and a setting spring 6 are installed in the valve sleeve, the setting spring is abutted between the valve rod and the valve sleeve, the valve rod penetrates through the connecting seat, and the lower end of the valve rod is connected with a valve clack 7. The upper end of the valve sleeve is provided with a connecting sleeve 8, the outer wall of the connecting sleeve is connected with a valve cap 9, the inner wall of the connecting sleeve is in threaded connection with a sleeve 10, the valve rod is movably sleeved with the sleeve, the upper end of the valve rod extends out of the sleeve, the outer wall of the upper end of the valve rod is provided with an online detection thread 11, and the upper ends of the sleeve and the valve rod. An upper spring seat 12 and a lower spring seat 13 are sleeved on the valve rod, the setting spring is installed between the upper spring seat and the lower spring seat, the upper spring seat is abutted to the lower end of the sleeve, and the lower spring seat is abutted to the outer wall of the valve rod. A circle of convex ring is arranged on the valve rod, and the lower spring seat is abutted against the convex ring.
Connecting bellows 14 between valve clack and the connecting seat, the disk seat upper end is equipped with sealed bulge loop 15, be equipped with the mounting groove on the valve clack lower surface, connect in the mounting groove and compress tightly pad 16, it installs O type circle 17 to compress tightly between filling up outer wall and the mounting groove lateral wall, it extrudes clearance 18 to compress tightly to be equipped with between filling up lower extreme edge and the mounting groove opening edge, O type circle stretches out and extrudes the clearance, it is close to upper portion position to compress tightly the pad outer wall, the mounting groove lateral wall is close to the bottom position, form pressure accumulation cavity 19 between the O type circle three, it is equipped with through-flow groove 20 on the upper surface to compress tightly to stack up, it is. The circulation groove is circular, compresses tightly to stack up surface border position equipartition and is equipped with a plurality of cross slot 22, compresses tightly to be equipped with a plurality of on the pad outer wall and erect groove 23 with the cross slot one-to-one, and the cross slot intercommunication is in the circulation groove and is erected between the groove, erects groove and pressure storage cavity intercommunication. One part of the upper end surface of the sealing bulge abuts against the O-shaped ring, and the other part of the upper end surface of the sealing bulge abuts against the lower surface of the pressing pad. The outer edge of the lower surface of the pressing pad is provided with a sealing boss 24, the lower surface of the sealing boss is lower than the lower surface of the valve clack, and the upper end face of the sealing boss is abutted to the lower surface of the sealing boss.
O type circle cross-section profile edge divide into deformation zone 25, valve clack laminating district 26, receive the district 27, compress tightly pad laminating district 28, four district equipartitions set up, valve clack laminating district sets up with compressing tightly the pad laminating district relatively, be equipped with the recess on the mounting groove lateral wall, the recess includes changeover portion 29, valve clack laminating section 30, deformation section 31, guide section 32, changeover portion and guide section all slope the setting, valve clack laminating section and deformation section all are the arc, it fills up laminating section 33 to be equipped with curved compressing tightly on the outer wall of lower extreme to compress tightly, it corresponds and arranges in the changeover portion and compresses tightly between the pad outer wall with the pressure storage cavity to receive the district, valve clack laminating district and valve clack laminating section adaptation and closely laminating, deformation district and deformation section correspond and be equipped with deformation clearance 34 between district and the deformation section with compressing tightly pad laminating section adaptation and closely laminating. The changeover portion is from the setting that down leans out, and the direction section is from the setting that down leans in, and the changeover portion is 10 degrees with the contained angle of horizontal plane, and the contained angle of direction section and horizontal plane is 20 degrees. A gap is arranged between the guide section and the deformation area on the outer wall of the O-shaped ring.
The valve rod lower extreme is connected valve clack seat 35, and the valve clack is installed at valve clack seat lower extreme. The connecting seat is provided with a positioning sleeve 36 extending downwards, the valve clack seat is in an inverted T-shaped structure, and the small-diameter part of the valve clack seat is movably sleeved in the positioning sleeve. The valve seat is provided with a positioning groove 37 on the lower end face, the valve clack is installed in the positioning groove in a matched mode, a pressure accumulating ring 38 extending downwards is arranged on the outer edge of the lower end of the valve clack seat, the inner wall of the pressure accumulating ring is arranged to incline outwards from top to bottom, the upper end of the valve seat is connected with an adjusting ring 39 in a threaded mode, a chamfer angle is arranged on the inner wall of the upper end of the adjusting ring, a lower pressure accumulating ring groove 40 is formed between the chamfer angle and the outer wall of the upper end of the valve seat. The upper end of the corrugated pipe is connected with an annular pad 42, the lower end of the corrugated pipe is connected with a locking sleeve 43, the pad is tightly installed between the installation seat and the valve body, and the locking sleeve is tightly sleeved on the valve flap seat. A plurality of locking grooves 44 are uniformly distributed on the outer wall of the adjusting ring, the outer wall of the valve body is tightly connected with set screws, and the front ends of the set screws are abutted to the locking grooves.
The safety valve is pressed down by the valve clack under the action of the setting spring, so that one part of the upper end surface of the sealing bulge at the upper end of the valve seat is abutted against the O-shaped ring, and the other part of the upper end surface of the sealing bulge at the upper end of the valve seat is abutted against the lower surface of the pressing pad. The pressing pad and the sealing bulge are abutted to form a metal-to-metal sealing mode, the sealing bulge and the O-shaped ring are abutted to form a metal-to-elastic material sealing mode, and the two sealing modes act together to greatly improve the sealing effect. After the medium gets into the disk seat, get into pressure accumulation cavity through discharge orifice, through-flow groove, the pressure effect of high-pressure medium circles at the O type, makes O type circle extrude to the extrusion gap, makes O type circle more inseparable butt to sealed protruding, improves sealed effect. The double-sealing spring type safety valve has double sealing characteristics and good sealing effect.
The above-described embodiments are merely preferred and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A double-seal spring type safety valve comprises a valve body, a valve seat and a valve sleeve, wherein a connecting seat is tightly installed between the valve body and the valve sleeve, the valve seat is tightly installed in the valve body, a valve rod and a setting spring are installed in the valve sleeve, the setting spring is abutted between the valve rod and the valve sleeve, the valve rod penetrates through the connecting seat, and the lower end of the valve rod is connected with a valve clack. The through flow groove is communicated between the pressure accumulation cavity and the through flow hole, one part of the upper end surface of the sealing bulge is abutted against the O-shaped ring, and the other part of the upper end surface of the sealing bulge is abutted against the lower surface of the pressing pad.
2. The safety valve with the double sealing springs as claimed in claim 1, wherein the cross-sectional profile edge of the O-ring is divided into a deformation region, a valve flap attachment region, a compression region, and a compression pad attachment region, the valve flap attachment region and the compression pad attachment region are oppositely disposed, a groove is disposed on the sidewall of the mounting groove, the groove includes a transition section, a valve flap attachment section, a deformation section, and a guide section, the transition section and the guide section are both obliquely disposed, the valve flap attachment section and the deformation section are both arc-shaped, an arc-shaped compression pad attachment section is disposed on the outer wall of the lower end of the compression pad, the compression region corresponds to the pressure accumulation cavity and is disposed between the transition section and the outer wall of the compression pad, the valve flap attachment region and the valve flap attachment section are adapted and tightly attached, the deformation region and the deformation section correspond to each other, and a deformation gap is disposed.
3. A double sealing spring safety valve according to claim 2, wherein the transition section is inclined outwardly from top to bottom, the pilot section is inclined inwardly from top to bottom, the transition section forms an angle of 10 degrees with the horizontal plane, and the pilot section forms an angle of 20 degrees with the horizontal plane.
4. The double-sealing spring type safety valve as claimed in claim 1, wherein a sealing boss is provided at an outer edge of a lower surface of the pressing pad, the lower surface of the sealing boss is lower than the lower surface of the valve flap, and an upper end surface of the sealing boss abuts against the lower surface of the sealing boss.
5. The double-sealing spring type safety valve according to claim 1, wherein the flow groove is circular, a plurality of transverse grooves are uniformly distributed at the edge of the upper surface of the pressure pad, a plurality of vertical grooves are correspondingly arranged on the outer wall of the pressure pad and the transverse grooves, the transverse grooves are communicated between the flow groove and the vertical grooves, and the vertical grooves are communicated with the pressure accumulation cavity.
6. A double sealing spring safety valve according to any one of claims 1 to 5, wherein the lower end of the valve stem is connected to a valve flap seat, and the valve flap is mounted to the lower end of the valve flap seat.
7. A double sealing spring type safety valve according to claim 6, wherein the connecting seat is provided with a downwardly extending locating sleeve, the valve flap seat is of an inverted T-shaped configuration, and the small diameter portion of the valve flap seat is movably sleeved in the locating sleeve.
8. The spring-loaded double seal safety valve of claim 6, wherein the lower end face of the valve flap seat is provided with a positioning groove, the valve flap is fittingly mounted in the positioning groove, the outer edge of the lower end of the valve flap seat is provided with a pressure accumulating ring extending downward, the inner wall of the pressure accumulating ring is inclined outward from top to bottom, the upper end of the valve seat is in threaded connection with the adjusting ring, the inner wall of the upper end of the adjusting ring is provided with a chamfer, a lower pressure accumulating ring groove is formed between the chamfer and the outer wall of the upper end of the valve seat, and an upper pressure accumulating ring groove.
9. A double seal spring type safety valve as claimed in any one of claims 1 to 5 wherein the upper end of the valve housing is provided with a connecting sleeve, the outer wall of the connecting sleeve is connected with the valve cap, the inner wall of the connecting sleeve is threadedly connected with the sleeve, the valve stem is movably sleeved with the sleeve, the upper end of the valve stem extends out of the sleeve, the outer wall of the upper end of the valve stem is provided with on-line detection threads, the upper spring seat and the lower spring seat are sleeved on the valve stem, the setting spring is mounted between the upper spring seat and the lower spring seat, the upper spring seat abuts against the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922233731.1U CN211231745U (en) | 2019-12-13 | 2019-12-13 | Double-seal spring type safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922233731.1U CN211231745U (en) | 2019-12-13 | 2019-12-13 | Double-seal spring type safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211231745U true CN211231745U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922233731.1U Active CN211231745U (en) | 2019-12-13 | 2019-12-13 | Double-seal spring type safety valve |
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| Country | Link |
|---|---|
| CN (1) | CN211231745U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848431A (en) * | 2019-12-13 | 2020-02-28 | 罗浮阀门集团有限公司 | Double-sealing spring type safety valve |
-
2019
- 2019-12-13 CN CN201922233731.1U patent/CN211231745U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848431A (en) * | 2019-12-13 | 2020-02-28 | 罗浮阀门集团有限公司 | Double-sealing spring type safety valve |
| CN110848431B (en) * | 2019-12-13 | 2023-06-30 | 罗浮阀门集团有限公司 | Double-sealing spring type safety valve |
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