CN209856455U - Pressure reducing valve with high sealing performance - Google Patents
Pressure reducing valve with high sealing performance Download PDFInfo
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- CN209856455U CN209856455U CN201920369028.0U CN201920369028U CN209856455U CN 209856455 U CN209856455 U CN 209856455U CN 201920369028 U CN201920369028 U CN 201920369028U CN 209856455 U CN209856455 U CN 209856455U
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Abstract
A pressure reducing valve with high sealing performance comprises a valve body, a valve cap in threaded connection with the upper end of the valve body and a blocking cap in threaded connection with the lower end of the valve body, wherein a connecting cap is in threaded connection with the upper portion of the valve cap; the inner wall of the connecting cap is provided with a clamping step; the upper part of the connecting cap is provided with a plurality of air leakage holes communicated with the inner space of the connecting cap; the inner wall of the upper part of the valve body is provided with an annular sealing groove; a sealing core matched with the sealing groove is arranged in the sealing groove; the outer wall of the sealing core is provided with an annular groove; an O-shaped ring matched with the annular groove is arranged in the annular groove; a positioning column is arranged at the center of the upper surface of the sealing core, and a valve rod is arranged at the center of the lower surface of the sealing core; and a spring is arranged between the sealing core and the clamping step, and the elastic force of the spring presses the sealing core on the groove wall at the lower side of the sealing groove. The utility model discloses a relief pressure valve with high leakproofness can guarantee the leakproofness of relief pressure valve during the use to the at utmost, effectively avoids appearing the condition of medium leakage.
Description
Technical Field
The utility model relates to a relief pressure valve, especially a relief pressure valve with high leakproofness.
Background
The relief pressure valve is a valve that can automatic decompression when pressure is too high, thereby guarantee medium pressure's stability, traditional relief pressure valve is when sealed, laminate between the sealed core outer wall that mainly relies on the relief pressure valve and the valve body inner wall, but summarize at the in-service use process, sealed core then can remove when automatic decompression, the long-term removal of sealed core, easily cause the wearing and tearing between sealed core and the valve body, in case wearing and tearing appear, sealed between sealed core and the valve body then can't obtain guaranteeing, the condition of medium leakage appears, when pressure is stable, if the medium leaks, the condition of low pressure can appear, lead to medium pressure unstability, can't guarantee performance, and the relief pressure valve only has foretell one sealed, in case should seal up the problem, the leakproofness can also can't be ensured again.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a relief pressure valve with high leakproofness, it can guarantee the leakproofness of relief pressure valve during the use to the at utmost, effectively avoids appearing the condition of medium leakage.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
the utility model discloses a relief pressure valve with high leakproofness, including valve body, spiro union in the valve cap of valve body upper end and the stifled cap of spiro union in valve body lower extreme, its characterized in that: the upper part of the valve cap is screwed with a connecting cap; the inner wall of the connecting cap is provided with a clamping step; the upper part of the connecting cap is provided with a plurality of air leakage holes communicated with the inner space of the connecting cap; the inner wall of the upper part of the valve body is provided with an annular sealing groove; a sealing core matched with the sealing groove is arranged in the sealing groove; the outer wall of the sealing core is provided with an annular groove; an O-shaped ring matched with the annular groove is arranged in the annular groove; a positioning column is arranged at the center of the upper surface of the sealing core, and a valve rod is arranged at the center of the lower surface of the sealing core; a spring is arranged between the sealing core and the clamping step, and the elastic force of the spring tightly presses the sealing core on the wall of the lower side of the sealing groove; the upper end of the spring is pressed on the clamping step, and the lower end of the spring is sleeved outside the positioning column; the lower end of the valve rod is screwed with an internal pressure cap pressed on the inner wall of the blocking cap; the valve rod is sleeved with a guide sleeve; the middle part of the guide sleeve is fixed with the inner wall of the valve body through a fixing plate; the left side and the right side of the outer wall of the middle part of the valve body are respectively provided with an air inlet hole and an air outlet hole; an air inlet plug is screwed in the air inlet hole, and an air outlet plug is screwed in the air outlet hole; the left side and the right side of the fixed plate are respectively provided with a left vent hole communicated with the air inlet hole and a right vent hole communicated with the air outlet hole; a sealing ring positioned above the fixed plate is arranged in the valve body; the lower surface of the sealing core is fixed with a sealing tube sleeved outside the guide sleeve; the outer wall of the lower end pipe opening of the sealing pipe is provided with a sealing head with a wide upper part and a narrow lower part; the outer wall of the sealing head is attached to the hole opening at the upper end of the inner hole of the sealing ring.
The upper surface of the sealing ring is provided with a positive magnetic ring; a positioning ring is arranged on the upper surface of the positive pole magnetic ring; the upper surface of the positioning ring is provided with an annular auxiliary groove; a negative magnetic ring corresponding to the auxiliary groove is sleeved outside the sealing tube and attracted with the positive magnetic ring; the upper end of the negative pole magnetic ring is connected with the outer wall of the sealing tube through a connecting plate; the lower end of the negative pole magnetic ring is lower than the lower surface of the connecting plate and is embedded in the auxiliary groove.
And a rubber pad is arranged at the bottom of the auxiliary groove.
The lower surface of the connecting plate is attached to the upper surface of the positioning ring.
The diameter of the inner hole of the positive pole magnetic ring and the diameter of the inner hole of the positioning ring are both larger than the diameter of the upper end of the sealing head.
The utility model has the advantages that:
compared with the prior art, adopt the utility model discloses the sealed core of relief pressure valve accessible with high leakproofness of structure forms one with the seal groove and seals, form another through sealed head and sealing ring and seal, the leakproofness of relief pressure valve when medium pressure is normal has been guaranteed to the sealed existence furthest of twice, even wherein seal the appearance and damage together, another is sealed also can play sealed effect, avoid appearing the condition of medium leakage all the time, thereby avoid because the medium leakage leads to the condition that pressure is low excessively, performance when guaranteeing the relief pressure valve to use.
Drawings
FIG. 1 is a schematic structural view of a pressure reducing valve with high sealing performance according to the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
referring to fig. 1 and 2, the present invention provides a pressure reducing valve with high sealing performance, which includes a valve body 1, a valve cap 2 screwed on the upper end of the valve body 1, and a plug cap 3 screwed on the lower end of the valve body 1, wherein the upper part of the valve cap 2 is screwed with a connecting cap 4; a clamping step 5 is arranged on the inner wall of the connecting cap 4; the upper part of the connecting cap 4 is provided with a plurality of air leakage holes 6 communicated with the inner space of the connecting cap 4; an annular sealing groove 7 is formed in the inner wall of the upper part of the valve body 1; a sealing core 8 matched with the sealing groove 7 is arranged in the sealing groove; an annular groove 9 is formed in the outer wall of the sealing core 8; an O-shaped ring 10 matched with the annular groove 9 is arranged in the annular groove; a positioning column 11 is arranged at the center of the upper surface of the sealing core 8, and a valve rod 12 is arranged at the center of the lower surface of the sealing core 8; a spring 13 is arranged between the sealing core 8 and the clamping step 5, and the elastic force of the spring 13 tightly presses the sealing core 8 on the lower side groove wall of the sealing groove 7; the upper end of the spring 13 is pressed on the clamping step 5, and the lower end of the spring 13 is sleeved outside the positioning column 11; the lower end of the valve rod 12 is screwed with an internal pressure cap 14 pressed on the inner wall of the plugging cap 3; a guide sleeve 15 is sleeved outside the valve rod 12; the middle part of the guide sleeve 15 is fixed with the inner wall of the valve body 1 through a fixing plate 16; the left side and the right side of the outer wall of the middle part of the valve body 1 are respectively provided with an air inlet hole 17 and an air outlet hole 18; an air inlet plug 19 is screwed in the air inlet hole 17, and an air outlet plug 20 is screwed in the air outlet hole 18; the left side and the right side of the fixed plate 16 are respectively provided with a left vent hole 21 communicated with the air inlet hole 17 and a right vent hole 22 communicated with the air outlet hole 18; a sealing ring 23 positioned above the fixing plate 16 is arranged in the valve body 1; a sealing pipe 24 sleeved outside the guide sleeve 15 is fixed on the lower surface of the sealing core 8; a sealing head 25 with a wide upper part and a narrow lower part is arranged on the outer wall of the lower end pipe orifice of the sealing pipe 24; the outer wall of the sealing head 25 is attached to the hole at the upper end of the inner hole of the sealing ring 23.
The upper surface of the sealing ring 23 is provided with an anode magnetic ring 26; a positioning ring 27 is arranged on the upper surface of the positive pole magnetic ring 26; the upper surface of the positioning ring 27 is provided with an annular auxiliary groove 28; a negative pole magnetic ring 29 corresponding to the auxiliary groove 28 is sleeved outside the sealing tube 24, and the negative pole magnetic ring 29 and the positive pole magnetic ring 26 are attracted; the upper end of the negative pole magnetic ring 29 is connected with the outer wall of the sealing tube 24 through a connecting plate 30; the lower end of the negative pole magnetic ring 29 is lower than the lower surface of the connecting plate 30 and is embedded in the auxiliary groove 28.
A rubber pad 31 is arranged at the bottom of the auxiliary groove 28.
The lower surface of the connecting plate 30 is attached to the upper surface of the positioning ring 27.
The inner hole diameter of the positive pole magnetic ring 26 and the inner hole diameter of the positioning ring 27 are both larger than the upper end diameter of the sealing head 25.
The utility model discloses a use method as follows:
before the pressure reducing valve is used, a user can unscrew the air inlet plug 19 from the air inlet hole 17 and unscrew the air outlet plug 20 from the air outlet hole 18, then the air inlet hole 17 and the air outlet hole 18 are connected with an air pressure system or a hydraulic system through pipelines, at the moment, the air inlet hole 17 is communicated with the inner space of the valve body 1 through the left vent hole 21, the air outlet hole 18 is communicated with the inner space of the valve body 1 through the right vent hole 22, after the pressure reducing valve is installed, the pressure reducing valve can be used, and when the pressure reducing valve is in a normal state, the lower surface of the sealing core 8 is tightly pressed on the lower side groove wall of the sealing groove 7 under.
When the medium appears the condition of pressure grow at the flow in-process, the medium that flows into in the relief pressure valve body 1 just can exert pressure at sealed core 8 lower surface, then make sealed core 8 shift up, spring 13 is compressed this moment, along with sealed core 8 shifts up, the space in the valve body 1 has equivalently obtained the amplification, make the pressure of medium obtain the release, thereby play the decompression effect, when sealed core 8 shifts up under the medium pressure effect, the gas in valve cap 2 and the connecting cap 4 can not be compressed, but discharge to the external world through the bleeder vent 6, the condition that can not appear because valve cap 2 and the gas in the connecting cap 4 are compressed and produce the resistance and lead to sealed core 8 to unable the shifting up, thereby effectively guarantee the automatic decompression effect of sealed core 8.
When the medium pressure is normal, the sealing core 8 is jointed with the inner wall of the sealing groove 7 through the outer wall of the sealing core, thereby forming a seal, and the existence of the O-shaped ring 10 can further improve the sealing performance between the seal core 8 and the seal groove 7, when the sealing core 8 moves longitudinally, the O-shaped ring 10 can replace the friction between the outer wall of the sealing core 8 and the inner wall of the sealing groove 7, thereby effectively reducing the abrasion degree of the outer wall of the sealing core 8, thereby ensuring the sealing performance of long time effect, simultaneously, the outer wall of the sealing head 25 is jointed with the hole opening at the upper end of the inner hole of the sealing ring 23 to realize the sealing of surface and line, thus forming a second seal, the medium entering the valve body 1, will first encounter the seal formed between the sealing head 25 and the sealing ring 23, even if the seal is damaged, the seal formed between the seal core 8 and the seal groove 7 can also block the medium, so that the medium leakage is avoided.
In conclusion, the utility model discloses the accessible seals core 8 and seal groove 7 and forms one sealed, forms another through sealed head 25 and sealing ring 23 and seals, and the existence of twice is sealed has guaranteed the leakproofness of relief pressure valve when medium pressure is normal to the at utmost, even wherein the damage appears in one sealed, another sealed also can play sealed effect, avoids appearing the condition of medium leakage all the time to avoid because the medium leakage leads to the condition that pressure is low excessively, performance when guaranteeing the relief pressure valve and using.
The upper surface of the sealing ring 23 is provided with an anode magnetic ring 26, the upper surface of the anode magnetic ring 26 is provided with a positioning ring 27, the upper surface of the positioning ring 27 is provided with an annular auxiliary groove 28, the sealing tube 24 is sleeved with a cathode magnetic ring 29 corresponding to the auxiliary groove 28, the cathode magnetic ring 29 is attracted with the anode magnetic ring 26, the upper end of the cathode magnetic ring 29 is connected with the outer wall of the sealing tube 24 through a connecting plate 30, the lower end of the cathode magnetic ring 29 is lower than the lower surface of the connecting plate 30 and is embedded in the auxiliary groove 28, when the medium pressure is stable, the lower end surface of the cathode magnetic ring 29 is tightly pressed at the bottom of the auxiliary groove 28 through the attraction between the anode magnetic ring 26 and the cathode magnetic ring 29, so that a third seal is formed, the sealing performance of the pressure reducing valve 0 is further ensured, the bottom of the auxiliary groove 28 is provided with.
The lower surface of connecting plate 30 and the upper surface of holding ring 27 laminate mutually, can form the fourth and seal, improve the leakproofness of relief pressure valve once more, when the sealed impaired between sealing ring 23 and sealing head 25, the medium then can be by the sealed separation between connecting plate 30 and holding ring 27, even this is sealed impaired, the sealed same of negative pole magnetic ring 29 and supplementary groove 28 formation can carry out the separation to the medium, avoids the condition of medium leakage in the at utmost.
The inner hole diameter of the positive magnetic ring 26 and the inner hole diameter of the positioning ring 27 are both larger than the upper end diameter of the sealing head 25, so that the interference of the existence of the positive magnetic ring 26 and the positioning ring 27 on the up-and-down movement of the sealing head is effectively avoided, and the sealing between the sealing head 25 and the sealing ring 23 can be smoothly completed.
Claims (5)
1. The utility model provides a relief pressure valve with high leakproofness, includes valve body, spiro union in the valve cap of valve body upper end and the stifled cap of spiro union in valve body lower extreme, its characterized in that: the upper part of the valve cap is screwed with a connecting cap; the inner wall of the connecting cap is provided with a clamping step; the upper part of the connecting cap is provided with a plurality of air leakage holes communicated with the inner space of the connecting cap; the inner wall of the upper part of the valve body is provided with an annular sealing groove; a sealing core matched with the sealing groove is arranged in the sealing groove; the outer wall of the sealing core is provided with an annular groove; an O-shaped ring matched with the annular groove is arranged in the annular groove; a positioning column is arranged at the center of the upper surface of the sealing core, and a valve rod is arranged at the center of the lower surface of the sealing core; a spring is arranged between the sealing core and the clamping step, and the elastic force of the spring tightly presses the sealing core on the wall of the lower side of the sealing groove; the upper end of the spring is pressed on the clamping step, and the lower end of the spring is sleeved outside the positioning column; the lower end of the valve rod is screwed with an internal pressure cap pressed on the inner wall of the blocking cap; the valve rod is sleeved with a guide sleeve; the middle part of the guide sleeve is fixed with the inner wall of the valve body through a fixing plate; the left side and the right side of the outer wall of the middle part of the valve body are respectively provided with an air inlet hole and an air outlet hole; an air inlet plug is screwed in the air inlet hole, and an air outlet plug is screwed in the air outlet hole; the left side and the right side of the fixed plate are respectively provided with a left vent hole communicated with the air inlet hole and a right vent hole communicated with the air outlet hole; a sealing ring positioned above the fixed plate is arranged in the valve body; the lower surface of the sealing core is fixed with a sealing tube sleeved outside the guide sleeve; the outer wall of the lower end pipe opening of the sealing pipe is provided with a sealing head with a wide upper part and a narrow lower part; the outer wall of the sealing head is attached to the hole opening at the upper end of the inner hole of the sealing ring.
2. A pressure reducing valve having high sealability as claimed in claim 1, wherein: the upper surface of the sealing ring is provided with a positive magnetic ring; a positioning ring is arranged on the upper surface of the positive pole magnetic ring; the upper surface of the positioning ring is provided with an annular auxiliary groove; a negative magnetic ring corresponding to the auxiliary groove is sleeved outside the sealing tube and attracted with the positive magnetic ring; the upper end of the negative pole magnetic ring is connected with the outer wall of the sealing tube through a connecting plate; the lower end of the negative pole magnetic ring is lower than the lower surface of the connecting plate and is embedded in the auxiliary groove.
3. A pressure reducing valve having high sealability as claimed in claim 2, wherein: and a rubber pad is arranged at the bottom of the auxiliary groove.
4. A pressure reducing valve having high sealability as claimed in claim 3, wherein: the lower surface of the connecting plate is attached to the upper surface of the positioning ring.
5. A pressure reducing valve having high sealability as claimed in claim 2, wherein: the diameter of the inner hole of the positive pole magnetic ring and the diameter of the inner hole of the positioning ring are both larger than the diameter of the upper end of the sealing head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920369028.0U CN209856455U (en) | 2019-03-22 | 2019-03-22 | Pressure reducing valve with high sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920369028.0U CN209856455U (en) | 2019-03-22 | 2019-03-22 | Pressure reducing valve with high sealing performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209856455U true CN209856455U (en) | 2019-12-27 |
Family
ID=68934520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920369028.0U Active CN209856455U (en) | 2019-03-22 | 2019-03-22 | Pressure reducing valve with high sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209856455U (en) |
-
2019
- 2019-03-22 CN CN201920369028.0U patent/CN209856455U/en active Active
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