CN212509685U - Explosion-proof back-fire relief breather valve - Google Patents
Explosion-proof back-fire relief breather valve Download PDFInfo
- Publication number
- CN212509685U CN212509685U CN202020927885.0U CN202020927885U CN212509685U CN 212509685 U CN212509685 U CN 212509685U CN 202020927885 U CN202020927885 U CN 202020927885U CN 212509685 U CN212509685 U CN 212509685U
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- CN
- China
- Prior art keywords
- fixedly connected
- breather valve
- explosion
- shell
- baffle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003063 flame retardant Substances 0.000 claims abstract description 24
- 238000005192 partition Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 14
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007788 liquid Substances 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
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The utility model discloses an explosion-proof fire-retardant breather valve, which comprises a shell, wherein the inner side wall of the shell is fixedly connected with a clapboard, the inner part of the clapboard is a first chamber, the inner part of the shell and the outer side of the clapboard are second chambers, an upper cover is arranged at the upper end of the shell, a sleeve is fixedly connected in the middle of the lower end of the upper cover, a second connecting rod is inserted in the sleeve, the lower end of the second connecting rod is fixedly connected with a negative pressure cover plate, the side wall of the shell is fixedly connected with a first supporting rod below the partition plate, a first connecting rod penetrates through the middle part of the first supporting rod, the upper end of the first connecting rod is fixedly connected with a positive pressure cover plate, the inner wall fixedly connected with second bracing piece of baffle, the inside of baffle and be provided with fire-retardant layer in one side of second bracing piece, the middle part on fire-retardant layer is run through and is provided with the dead lever. The utility model discloses in, shield and upper cover all can be dismantled, make things convenient for the maintenance of breather valve.
Description
Technical Field
The utility model relates to a breather valve field especially relates to an explosion-proof back-fire relief breather valve.
Background
The breather valve is a valve which can ensure that the storage tank space is isolated from the atmosphere within a certain pressure range and can be communicated with the atmosphere (breathe) when the pressure exceeds or is lower than the pressure range. The function of the device is to prevent the storage tank from being damaged due to overpressure or vacuum, and simultaneously, the evaporation loss of the stored liquid can be reduced. It is mainly composed of valve seat, valve cover, protecting cover and two groups of opening and closing devices controlled by vacuum and pressure.
The existing breather valve is inconvenient to disassemble and is not beneficial to maintenance and repair of the breather valve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing an explosion-proof fire-retardant breather valve.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an explosion-proof fire-retardant breather valve comprises a shell, wherein a partition plate is fixedly connected to the inner side wall of the shell, a first cavity is arranged inside the partition plate, a second cavity is arranged inside the shell and outside the partition plate, an upper cover is arranged at the upper end of the shell, a sleeve is fixedly connected to the middle of the lower end of the upper cover, a second connecting rod is arranged inside the sleeve in an inserting manner, a second spring is arranged inside the sleeve, one end of the second spring abuts against the inner wall of the sleeve, the other end of the second spring abuts against the upper end of the second connecting rod, a negative pressure cover plate is fixedly connected to the lower end of the second connecting rod and is located in the second cavity, a first supporting rod is fixedly connected to the side wall of the shell and below the partition plate, a first connecting rod is arranged in the middle of the first supporting rod in a penetrating manner, a positive pressure cover plate is fixedly connected to the upper end of the first connecting rod, the lower extreme of head rod is provided with the baffle, be provided with first spring between baffle and the first bracing piece, the inner wall fixedly connected with second bracing piece of baffle, the inside of baffle and be provided with fire-retardant layer in one side of second bracing piece, the middle part on fire-retardant layer is run through and is provided with the dead lever, the one end of dead lever and the middle part threaded connection of second bracing piece, the other end of dead lever is provided with the shield.
As a further description of the above technical solution:
the bottom of the shell is provided with fixing holes at equal angles.
As a further description of the above technical solution:
a third sealing ring is arranged between the positive pressure cover plate and the partition plate, and a second sealing ring is arranged between the negative pressure cover plate and the partition plate.
As a further description of the above technical solution:
the edge of upper cover is provided with fixing bolt and the upper end fixed connection of upper cover through fixing bolt and casing, be provided with first sealing washer between upper cover and the casing.
As a further description of the above technical solution:
the fixed rod side wall is fixedly connected with a baffle ring, one side of the baffle ring is a flame-retardant layer, and the other side of the baffle ring is provided with a hexagonal bayonet.
As a further description of the above technical solution:
the lower end of the first connecting rod is provided with a first nut and is in threaded connection with the first connecting rod.
As a further description of the above technical solution:
and a second nut is arranged at one end of the fixing rod and at one side of the dustproof cover, and the fixing rod is in threaded connection.
The utility model discloses following beneficial effect has:
the utility model discloses, shield and upper cover all can be dismantled, make things convenient for the maintenance of breather valve to maintain, are provided with second sealing washer and third sealing washer respectively in negative pressure apron and malleation apron department simultaneously, have guaranteed the leakproofness of first cavity and second cavity when the closure.
Drawings
Fig. 1 is a schematic cross-sectional view of an explosion-proof fire-retardant breather valve provided by the present invention;
fig. 2 is an enlarged view of a point a in fig. 1.
Illustration of the drawings:
1. a housing; 2. a fixing hole; 3. a first support bar; 4. a baffle plate; 5. a first nut; 6. a first connecting rod; 7. a first spring; 8. a dust cover; 9. a second nut; 10. fixing the rod; 11. a flame retardant layer; 12. a second support bar; 13. fixing the bolt; 14. a first seal ring; 15. an upper cover; 16. a sleeve; 17. a second spring; 18. a second connecting pipe; 19. a negative pressure cover plate; 20. a second seal ring; 21. a first chamber; 22. a partition plate; 23. a second chamber; 24. a positive pressure cover plate; 25. a third seal ring; 26. a baffle ring; 27. a hexagonal bayonet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-2, the present invention provides an embodiment: an explosion-proof fire-retardant breather valve comprises a shell 1, a partition plate 22 is fixedly connected to the inner side wall of the shell 1, a first cavity 21 is arranged inside the partition plate 22, a second cavity 23 is arranged inside the shell 1 and outside the partition plate 22, an upper cover 15 is arranged at the upper end of the shell 1, a sleeve 16 is fixedly connected to the middle of the lower end of the upper cover 15, a second connecting rod 18 is inserted into the sleeve 16, a second spring 17 is arranged inside the sleeve 16, one end of the second spring 17 abuts against the inner wall of the sleeve 16, the other end of the second spring 17 abuts against the upper end of the second connecting rod 18, a negative pressure cover plate 19 is fixedly connected to the lower end of the second connecting rod 18, the negative pressure cover plate 19 is located in the second cavity 23, a first supporting rod 3 is fixedly connected to the lower portion of the partition plate 22 on the side wall of the shell 1, a first connecting rod 6 is arranged in the middle of the first supporting rod 3 in a penetrating manner, a positive pressure cover plate 24 is, the lower extreme of head rod 6 is provided with baffle 4, be provided with first spring 7 between baffle 4 and the first bracing piece 3, the inner wall fixedly connected with second bracing piece 12 of baffle 22, the inside of baffle 22 and be provided with fire-retardant layer 11 in one side of second bracing piece 12, the middle part of fire-retardant layer 11 is run through and is provided with dead lever 10, the middle part threaded connection of the one end of dead lever 10 and second bracing piece 12, the other end of dead lever 10 is provided with shield 8.
The bottom of casing 1 is provided with fixed orifices 2 with equal angle, be provided with third sealing washer 25 between malleation apron 24 and the baffle 22, be provided with second sealing washer 20 between negative pressure apron 19 and the baffle 22, the edge of upper cover 15 is provided with fixing bolt 13 and upper end fixed connection that upper cover 15 passes through fixing bolt 13 and casing 1, be provided with first sealing washer 14 between upper cover 15 and the casing 1, dead lever 10 lateral wall fixedly connected with fender ring 26, one side of fender ring 26 is fire-retardant layer 11, the opposite side of fender ring 26 is provided with hexagonal bayonet 27, the lower extreme of head rod 6 is provided with first nut 5, and with head rod 6 threaded connection, the one end of dead lever 10 just is provided with second nut 9 in one side of shield 8, and dead lever 10 threaded connection.
The working principle is as follows: when the utility model is used, when the pressure of the first cavity 21 is smaller than the pressure of the second cavity 23, the positive pressure cover plate 24 is pushed open, the excessive gas of the second cavity 23 enters the first cavity 21 through the positive pressure cover plate 24, the gas passes through the flame retardant layer 11 and is discharged at the dustproof cover 8, and when the pressure of the first cavity 21 is equal to the pressure of the second cavity 23, the positive pressure cover plate 24 is reset under the action of the first spring 7, and the first cavity 21 and the second cavity 23 are closed; when the pressure of the first chamber 21 is higher than that of the second chamber 23, the negative pressure cover plate 19 is pushed open, gas enters the second chamber 23 from the first chamber 21, the shortage of the gas in the second chamber 23 is supplemented, and when the pressure of the first chamber 21 is equal to that of the second chamber 23, the negative pressure cover plate 19 is reset under the action of the second spring 17, and the first chamber 21 and the second chamber 23 are closed; the dust cover 8 and the upper cover 15 can be detached, maintenance of the breather valve is facilitated, meanwhile, the second sealing ring 20 and the third sealing ring 25 are arranged at the negative pressure cover plate 19 and the positive pressure cover plate 24 respectively, and sealing performance of the first cavity 21 and the second cavity 23 in the closing process is guaranteed.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. An explosion-proof back-fire relief breather valve, includes casing (1), its characterized in that: the inner side wall of the shell (1) is fixedly connected with a partition plate (22), the inner part of the partition plate (22) is a first chamber (21), the inner part of the shell (1) and the outer side of the partition plate (22) are a second chamber (23), the upper end of the shell (1) is provided with an upper cover (15), the middle part of the lower end of the upper cover (15) is fixedly connected with a sleeve (16), a second connecting rod (18) is arranged in the sleeve (16) in an inserting manner, a second spring (17) is arranged in the sleeve (16), one end of the second spring (17) supports against the inner wall of the sleeve (16), the other end of the second spring (17) supports against the upper end of the second connecting rod (18), the lower end of the second connecting rod (18) is fixedly connected with a negative pressure cover plate (19) and the negative pressure cover plate (19) is located in the second chamber (23), the side wall of the shell (1) and the lower part of the partition plate (22) is fixedly connected with a, the middle part of first bracing piece (3) is run through and is provided with head rod (6), the upper end fixedly connected with malleation apron (24) and malleation apron (24) of head rod (6) are in first cavity (21), the lower extreme of head rod (6) is provided with baffle (4), be provided with between baffle (4) and first bracing piece (3) first spring (7), the inner wall fixedly connected with second bracing piece (12) of baffle (22), the inside of baffle (22) and be provided with fire-retardant layer (11) in one side of second bracing piece (12), the middle part of fire-retardant layer (11) is run through and is provided with dead lever (10), the middle part threaded connection of the one end of dead lever (10) and second bracing piece (12), the other end of dead lever (10) is provided with shield (8).
2. An explosion-proof fire-retardant breather valve according to claim 1, characterized in that: the bottom of the shell (1) is provided with fixing holes (2) at equal angles.
3. An explosion-proof fire-retardant breather valve according to claim 1, characterized in that: be provided with third sealing washer (25) between malleation apron (24) and baffle (22), be provided with second sealing washer (20) between negative pressure apron (19) and baffle (22).
4. An explosion-proof fire-retardant breather valve according to claim 1, characterized in that: the edge of upper cover (15) is provided with fixing bolt (13) and upper cover (15) pass through fixing bolt (13) and casing (1) upper end fixed connection, be provided with first sealing washer (14) between upper cover (15) and casing (1).
5. An explosion-proof fire-retardant breather valve according to claim 1, characterized in that: the fixing rod (10) is characterized in that a retaining ring (26) is fixedly connected to the side wall of the fixing rod (10), a flame-retardant layer (11) is arranged on one side of the retaining ring (26), and a hexagonal bayonet (27) is arranged on the other side of the retaining ring (26).
6. An explosion-proof fire-retardant breather valve according to claim 1, characterized in that: the lower end of the first connecting rod (6) is provided with a first nut (5) which is in threaded connection with the first connecting rod (6).
7. An explosion-proof fire-retardant breather valve according to claim 1, characterized in that: one end of the fixing rod (10) and one side of the dustproof cover (8) are provided with a second nut (9), and the fixing rod (10) is in threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020927885.0U CN212509685U (en) | 2020-05-27 | 2020-05-27 | Explosion-proof back-fire relief breather valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020927885.0U CN212509685U (en) | 2020-05-27 | 2020-05-27 | Explosion-proof back-fire relief breather valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212509685U true CN212509685U (en) | 2021-02-09 |
Family
ID=74391208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020927885.0U Expired - Fee Related CN212509685U (en) | 2020-05-27 | 2020-05-27 | Explosion-proof back-fire relief breather valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212509685U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251312A (en) * | 2021-07-05 | 2021-08-13 | 江苏信泰化工装备有限公司 | Flame-retardant storage tank breather valve |
-
2020
- 2020-05-27 CN CN202020927885.0U patent/CN212509685U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251312A (en) * | 2021-07-05 | 2021-08-13 | 江苏信泰化工装备有限公司 | Flame-retardant storage tank breather valve |
| CN113251312B (en) * | 2021-07-05 | 2021-09-07 | 江苏信泰化工装备有限公司 | Flame-retardant storage tank breather valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210209 |