CN204628666U - Balance back pressure type explosion needle-valve - Google Patents
Balance back pressure type explosion needle-valve Download PDFInfo
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- CN204628666U CN204628666U CN201520339637.3U CN201520339637U CN204628666U CN 204628666 U CN204628666 U CN 204628666U CN 201520339637 U CN201520339637 U CN 201520339637U CN 204628666 U CN204628666 U CN 204628666U
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- cavity
- piston
- upper piston
- back pressure
- explosion
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Abstract
The open a kind of balance back pressure type explosion needle-valve of the utility model, comprises valve body, lower piston, upper piston and explosion pin; Described valve body comprises the first cavity, the second cavity and the 3rd cavity that are interconnected, and described first cavity and the 3rd cavity are all vertical with described second cavity; Described lower piston is arranged in described first cavity; Described upper piston is arranged in described 3rd cavity; Described lower piston is positioned at the below of described upper piston and is fixedly connected with described upper piston, and the piston cross-section face area equation of described upper piston and lower piston; Described upper piston is positioned at the below of described explosion pin and is fixedly connected with described explosion pin.The utility model can eliminate the active force that back pressure produces, thus the normal operation of the equipment of guarantee.
Description
Technical field
The utility model relates to a kind of explosion needle-valve, particularly relates to a kind of balance back pressure type explosion needle-valve.
Background technique
The function of explosion needle-valve is realized by the distortion of pressure part explosion pin.Because he is a Differential Pressure Unit, cannot open when system has back pressure according to setting pressure, in actual production, meeting product is dangerous greatly, delayed explosion may occur, produce danger to equipment and personnel.
Model utility content
The purpose of this utility model is: provide a kind of balance back pressure type explosion needle-valve, can eliminate the active force that back pressure produces, thus the normal operation of the equipment of guarantee.
To achieve these goals, the technical solution of the utility model is:
A kind of balance back pressure type explosion needle-valve, comprises valve body, lower piston, upper piston and explosion pin; Described valve body comprises the first cavity, the second cavity and the 3rd cavity that are interconnected, and described first cavity and the 3rd cavity are all vertical with described second cavity; Described lower piston is arranged in described first cavity; Described upper piston is arranged in described 3rd cavity; Described lower piston is positioned at the below of described upper piston and is fixedly connected with described upper piston, and the piston cross-section face area equation of described upper piston and lower piston; Described upper piston is positioned at the below of described explosion pin and is fixedly connected with described explosion pin.
Further, the both sides of described explosion pin are provided with guide stanchion.
Further, the top of described explosion pin is also connected with pressing plate, and is fixed by screw plug.
Further, also guide sleeve is provided with between described upper piston and described 3rd cavity.
Further, seal ring is equipped with between described upper piston and described guide sleeve, between described lower piston and described first cavity.
Further, described seal ring is O type circle.
The utility model is owing to have employed above-mentioned technology, and the good effect making it compared with prior art to have is:
The utility model is connected with lower piston owing to being provided with upper piston, due to the piston cross-section face area equation of upper piston and lower piston, described upper piston is equal with lower piston lifting surface area, and the effect that back pressure is produced is cancelled out each other, thus the normal operation of the equipment of guarantee.
Accompanying drawing explanation
Structural representation when Fig. 1 is the work of the utility model balance back pressure type explosion needle-valve.
Structural representation when Fig. 2 is the pressure release of the utility model balance back pressure type explosion needle-valve
Embodiment
Embodiment of the present utility model is further illustrated below in conjunction with accompanying drawing.
Shown in Figure 1, a kind of balance back pressure type explosion needle-valve, comprises valve body 6, lower piston 9, upper piston 5 and explosion pin 3; Described valve body 6 comprises the first cavity 61, second cavity 62 and the 3rd cavity 63 that are interconnected, and described first cavity 61 and the 3rd cavity 63 are all vertical with described second cavity 62; Described lower piston 9 is arranged in described first cavity 61; Described upper piston 5 is arranged in described 3rd cavity 63; Described lower piston 9 is positioned at the below of described upper piston 5 and is fixedly connected with described upper piston 5, and the piston cross-section face area equation of described upper piston 5 and lower piston 9; Described upper piston 5 is positioned at the below of described explosion pin 3 and is fixedly connected with described explosion pin 3.
Preferably, the both sides of described explosion pin 3 are provided with guide stanchion 4.
Preferably, the top of described explosion pin 3 is also connected with pressing plate 2, and is fixed by screw plug 1.
Preferably, guide sleeve 8 is also provided with between described upper piston 5 and described 3rd cavity 63.
Preferably, seal ring 7 is equipped with between described upper piston 5 and described guide sleeve 8, between described lower piston 9 and described first cavity 61.
Preferably, described seal ring 7 is O type circle.
Shown in Figure 2, when system internal pressure exceedes valve setting values, upper piston 5 and lower piston 9 together move upward, acting on explosion pin 3 makes it occur bending and deformation, in system, medium flows to the second cavity 62 of valve body 6 from the first cavity 61 of valve body 6, thus realize pressure release, when Installed System Memory is in back pressure, because the upper piston 5 arranged is connected with lower piston 9, and the structure of their piston cross-section face area equation, make upper piston 5 equal with lower piston 9 lifting surface area, power upwards and to act on power downward on lower piston 9 equal on the effect upper piston 5 that back pressure is produced, thus cancel out each other, the normal operation of guarantee equipment
In sum, the utility model can eliminate the active force that back pressure produces, thus the normal operation of the equipment of guarantee.
Claims (6)
1. balance a back pressure type explosion needle-valve, it is characterized in that: comprise valve body (6), lower piston (9), upper piston (5) and explosion pin (3); Described valve body (6) comprises the first cavity (61), the second cavity (62) and the 3rd cavity (63) that are interconnected, and described first cavity (61) and the 3rd cavity (63) are all vertical with described second cavity (62); Described lower piston (9) is arranged in described first cavity (61); Described upper piston (5) is arranged in described 3rd cavity (63); Described lower piston (9) is positioned at the below of described upper piston (5) and is fixedly connected with described upper piston (5), and the piston cross-section face area equation of described upper piston (5) and lower piston (9); Described upper piston (5) is positioned at the below of described explosion pin (3) and is fixedly connected with described explosion pin (3).
2. balance back pressure type explosion needle-valve according to claim 1, is characterized in that: the both sides of described explosion pin (3) are provided with guide stanchion (4).
3. balance back pressure type explosion needle-valve according to claim 1, is characterized in that: the top of described explosion pin (3) is also connected with pressing plate (2), and is fixed by screw plug (1).
4. balance back pressure type explosion needle-valve according to claim 1, is characterized in that: be also provided with guide sleeve (8) between described upper piston (5) and described 3rd cavity (63).
5. balance back pressure type explosion needle-valve according to claim 4, is characterized in that: be equipped with seal ring (7) between described upper piston (5) and described guide sleeve (8), between described lower piston (9) and described first cavity (61).
6. balance back pressure type explosion needle-valve according to claim 5, is characterized in that: described seal ring (7) is O type circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520339637.3U CN204628666U (en) | 2015-05-24 | 2015-05-24 | Balance back pressure type explosion needle-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520339637.3U CN204628666U (en) | 2015-05-24 | 2015-05-24 | Balance back pressure type explosion needle-valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204628666U true CN204628666U (en) | 2015-09-09 |
Family
ID=54047698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520339637.3U Active CN204628666U (en) | 2015-05-24 | 2015-05-24 | Balance back pressure type explosion needle-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204628666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677921A (en) * | 2020-06-15 | 2020-09-18 | 江苏八方工业装备有限公司 | Wear-resistant safety valve capable of being used for fluid with particles |
| CN114151550A (en) * | 2021-12-09 | 2022-03-08 | 徐州八方安全设备有限公司 | Reclosing type bending pin valve |
-
2015
- 2015-05-24 CN CN201520339637.3U patent/CN204628666U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677921A (en) * | 2020-06-15 | 2020-09-18 | 江苏八方工业装备有限公司 | Wear-resistant safety valve capable of being used for fluid with particles |
| CN114151550A (en) * | 2021-12-09 | 2022-03-08 | 徐州八方安全设备有限公司 | Reclosing type bending pin valve |
| CN114151550B (en) * | 2021-12-09 | 2023-09-12 | 徐州八方安全设备有限公司 | Reclosing type buckling pin valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |