CN211423483U - Two-way ventilation valve - Google Patents
Two-way ventilation valve Download PDFInfo
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- CN211423483U CN211423483U CN202020026199.6U CN202020026199U CN211423483U CN 211423483 U CN211423483 U CN 211423483U CN 202020026199 U CN202020026199 U CN 202020026199U CN 211423483 U CN211423483 U CN 211423483U
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Abstract
The utility model relates to a two-way ventilation valve, which comprises a valve body, wherein a valve cavity is arranged in the valve body, and a valve seat and a valve core are arranged in the valve cavity; a valve seat reset spring is arranged between the reset spring seat and the valve seat and used for elastically pressing the valve seat onto a sealing seat arranged on the valve body; the valve body is provided with a valve core spring seat at one end back to the return spring seat, and the valve core return spring is arranged between the valve core spring seat and the valve core; the valve core is provided with a guide post at least at one axial side of the valve body, and the guide post is assembled on a valve core spring seat and/or a valve seat at the corresponding side in a guiding manner; make case reset spring be located the valve seat one side that the valve seat reset spring was gone back to make the assembly of case and case reset spring and the assembly of valve seat and valve seat reset spring can not mutual interference, make the structure of two-way ventilative valve simpler moreover.
Description
Technical Field
The utility model belongs to the valve field, concretely relates to two-way ventilation valve.
Background
With the continuous development of military level at home and abroad, the safety problem in the storage and transportation of airborne equipment is more and more emphasized. The onboard equipment is generally placed in a special storage and transportation device during storage and transportation, and is often required to be stored in a sealed manner. Because the storage and transportation are carried out by various modes such as air transportation, sea transportation, railways and the like, the environmental indexes such as temperature, humidity, air pressure and the like are greatly changed, and the internal and external pressure difference of the storage and transportation device is also greatly changed. Therefore, in order to ensure the safety of the storage and transportation device and the internal onboard equipment, a safety vent valve needs to be installed on the storage and transportation device. When the internal and external pressure difference of the storage and transportation device changes greatly and exceeds a certain range, the vent valve can realize automatic or manual adjustment of air intake or air exhaust, and the safety of the storage and transportation device and internal airborne equipment is ensured.
The vent valve is generally applied to equipment such as pressure vessels, pressure pipelines and the like, and plays a role in safety protection. For example, the respiratory valve disclosed in the chinese utility model patent with the publication number CN2695747Y comprises a valve body, a valve seat and a valve core, wherein the valve seat is movably arranged along the axial direction of the valve body, a screen plate and a retainer ring for limiting the screen plate are arranged at one axial end of the valve body, and a valve seat spring is pressed and matched between the screen plate and the valve seat; the valve seat is also provided with a through hole, the valve core is arranged on the valve seat in a guiding way, and the center of the valve seat is provided with a guiding hole matched with the valve core and used for plugging the through hole on the valve seat; the valve core is provided with a retainer ring, a valve core spring is arranged between the retainer ring and the valve seat in a jacking and assembling mode, the inner side of the valve seat is provided with two pole steps which are coaxial with the guide hole and used for placing the valve seat spring and the valve core spring, and the valve core spring is positioned inside the valve seat spring. Meanwhile, the chinese utility model patent with the publication number of CN202302154U discloses a two-way breather valve, which has a structure similar to that of the above-mentioned breather valve.
In the breather valve in the prior art, the valve seat is simultaneously provided with the valve core spring and the valve seat spring, and the valve seat spring is sleeved outside the valve core spring, so that the structure of the breather valve is more complex, and the two springs are mutually interfered when being assembled due to the mutual sleeving, which is not beneficial to the assembly of the breather valve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a two-way ventilation valve to the technical problem who sets up two springs of installation and make the breather valve structure comparatively complicated and be unfavorable for the assembly on the valve seat simultaneously in solving current breather valve.
In order to achieve the above purpose, the utility model discloses well two-way ventilation valve's technical scheme is:
a two-way ventilation valve comprises a valve body, wherein a valve cavity is arranged in the valve body and is communicated along the axial direction of the valve body; a valve seat and a valve core are arranged in the valve cavity; the valve seat is movably arranged along the axial direction of the valve body, and is provided with a through hole which penetrates along the axial direction of the valve body; a valve seat reset spring is arranged between the reset spring seat and the valve seat and used for elastically pressing the valve seat onto a sealing seat arranged on the valve body; the valve core is arranged on one side of the valve seat, which is back to the reset spring seat, is movably arranged along the axial direction of the valve body and is used for plugging a through hole on the valve seat; the two-way ventilation valve also comprises a valve core reset spring, and the valve core reset spring is used for jacking the valve core to the valve seat; the valve body is also provided with a valve core spring seat, the valve core spring seat is arranged at one end of the valve body, which is back to the return spring seat, and the valve core return spring is arranged between the valve core spring seat and the valve core; and at least one side of the valve core in the axial direction of the valve body is provided with a guide post, and the guide post is assembled on a valve core spring seat and/or a valve seat on the corresponding side in a guiding manner.
The beneficial effects of the utility model reside in that: the case spring holder sets up the one end of the spring seat that resets dorsad on the valve body, is equipped with case reset spring moreover between case spring holder and case for case reset spring is located one side of the valve seat spring that resets dorsad on the valve seat, thereby makes the assembly of case and case reset spring and the assembly of valve seat and valve seat spring that resets can not mutual interference, makes the structure of two-way ventilative valve simpler moreover.
Furthermore, the valve core spring seat and the valve body are arranged in a split mode, and the valve core spring seat is detachably fixed on the valve body.
Has the advantages that: the valve core spring seat can be detachably fixed on the valve body, so that the valve core can be conveniently disassembled, assembled and replaced.
Furthermore, a valve core reset spring limiting structure is arranged on the valve core spring seat and used for supporting and limiting the valve core reset spring.
Has the advantages that: the valve core reset spring is better supported, and the situation of deflection can not occur when the valve core reset spring is compressed.
Furthermore, the valve core return spring limiting structure is an annular bulge on the valve core spring seat, and the peripheral surface of the annular bulge is in supporting fit with the valve core return spring.
Has the advantages that: the annular convex limiting structure is simpler to set.
Furthermore, the valve core is provided with a valve seat reset spring limiting structure for supporting and limiting the valve seat reset spring.
Has the advantages that: the valve seat reset spring is better supported, and the situation of deflection can not occur when the valve seat reset spring is compressed.
Furthermore, the valve seat reset spring limiting structure is an annular step on the valve core, and the peripheral surface of the annular step is in supporting fit with the valve seat reset ring.
Has the advantages that: the afternoon structure of the annular step is simpler to set.
Furthermore, a guide post is arranged on one side of the valve core close to the valve seat, and a guide hole in guide fit with the guide post is arranged in the center of the valve seat; when the valve core and the valve seat are abutted together, the tail end of the guide post is positioned in the guide hole.
Has the advantages that: the valve core is guided to move relative to the valve seat, and the tail end of the guide column is positioned in the guide hole, so that the guide column cannot penetrate through the valve seat to influence the flow of fluid in the valve cavity.
Furthermore, a sunken groove sunken towards the direction close to the valve seat is formed in the valve core spring seat, a manual pressing rod is arranged on one side, far away from the guide post, of the valve core, and a through hole is formed in the center of the bottom of the sunken groove and used for being matched with the manual pressing rod in a guiding mode.
Furthermore, the manual pressing rod penetrates through a through hole at the bottom of the sinking groove, the tail end of the manual pressing rod is positioned in the sinking groove, and the manual pressing rod is pressed towards the direction of the valve seat to open the valve cavity.
Has the advantages that: the valve cavity is opened by pressing the manual pressing rod in the sinking groove, so that the user can manually open the two-way vent valve.
Further, a sealing element is arranged on the valve seat and comprises a sealing inner ring and a sealing outer ring; the sealing inner ring and the sealing outer ring are arranged at intervals in the radial direction of the valve body; the sealing outer ring is used for being pressed and sealed with the sealing seat by the valve seat, and the sealing inner ring is used for being pressed and sealed with the valve core by the valve seat.
The above-described preferred embodiments may be adopted alone, or two or more embodiments may be arbitrarily combined when they can be combined, and the embodiments formed by the combination are not specifically described here and are included in the description of the present patent.
Drawings
Fig. 1 is a schematic structural view of a two-way vent valve of the present invention;
FIG. 2 is a schematic structural diagram of a valve core of a two-way vent valve being pushed open;
FIG. 3 is a schematic structural view of a valve cavity opened by a manual pressing rod for manually pressing a valve core;
FIG. 4 is a top view of a valve seat;
FIG. 5 is a top view of the return spring seat;
FIG. 6 is a top view of a poppet spring seat;
FIG. 7 is a top view of the valve cartridge;
description of reference numerals:
1-valve body, 2-valve seat, 21-through hole, 3-valve core, 31-guide column, 32-manual pressing rod, 4-valve seat return spring, 5-return spring seat, 51-communication hole, 6-valve core return spring, 7-valve core spring seat, 71-opening, 8-sealing seat, 9-sealing piece and 10-sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as the terms first and second, and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the recitation of "comprising an … …" may occur without the exclusion of additional like elements present in the process, method, article, or apparatus that comprises the element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
The present invention will be described in further detail with reference to examples.
The embodiment 1 of the two-way vent valve of the present invention is shown in fig. 1 to 3.
As shown in fig. 1, the two-way vent valve includes a valve body 1, and a valve cavity axially penetrating through the valve body 1 is arranged in the valve body 1. A valve seat 2 and a valve core 3 are arranged in the valve cavity, a reset spring seat 5 is arranged at one end, close to the axial direction of the valve seat 2, of the valve body 1, the reset spring seat 5 is detachably fixed on the valve body 1, external threads are arranged on the peripheral surface of the reset spring seat 5, and the reset spring seat 5 is assembled on the valve body 1 in a threaded mode; a valve seat reset spring 4 is arranged between the reset spring seat 5 and the valve seat 2 in a propping manner, the valve seat reset spring 4 is used for elastically propping the valve seat 2 to a sealing seat 8 on the valve body 1, and the sealing seat 8 is an annular bulge which is radially inward and arranged in the valve cavity.
As shown in fig. 4, the valve seat 2 is further provided with a through hole 21, and as shown in fig. 5, the return spring seat is provided with a communication hole 51, and the through hole 21 and the communication hole 51 correspond to each other in the axial direction of the valve body 1, so that the fluid can flow through the through hole 21 and the communication hole 51 more smoothly.
The valve core 2 is provided with an annular step, the outer peripheral surface of the annular step is mutually attached and supported with the inner peripheral surface of the valve seat reset spring 4, and the annular step is used for supporting and guiding the valve seat reset spring 4, so that the valve seat reset spring 4 is prevented from deflecting in the compression process.
A guide hole is formed in the center of the valve seat 2, a guide post 31 is arranged on one side of the valve core 3 close to the valve seat 2, the valve core 3 is arranged in the guide hole of the valve seat 2 through a guide device of the guide post 31, and when the valve core 3 and the valve seat 2 are abutted against each other, the tail end of the guide post 31 is positioned in the guide hole of the valve seat 2; a valve core spring seat 7 is arranged at one axial end of the valve body 1 close to the valve core 3, and the valve core spring seat 7 can be detachably fixed on the valve body 1; as shown in fig. 6, the valve element spring seat 7 is further provided with an opening 71 axially penetrating the valve element spring seat 7, a valve element return spring 6 is arranged between the valve element 3 and the valve element spring seat in a pressing manner, and the valve element return spring 6 is used for pressing the valve element 2 against the valve seat 3.
The valve core spring seat 7 is provided with an annular bulge, the outer peripheral surface of the annular bulge is mutually attached and supported with the inner peripheral surface of the valve core return spring 6, and the annular bulge is used for supporting and guiding the valve core return spring 6, so that the valve core return spring 6 is prevented from deflecting in the compression process.
A sunken groove sunken towards the direction of the valve seat 2 is arranged on the valve core spring seat 7, and a through hole is arranged at the center of the bottom of the sunken groove; as shown in fig. 7, a manual pressing rod 32 is disposed on one side of the valve core 3 away from the guide post 31, the manual pressing rod 32 is in guiding fit with a through hole at the bottom of the sinking groove, and the tail end of the manual pressing rod 32 is located in the sinking groove after passing through the through hole, so that the manual pressing rod 32 does not protrude out of the valve body 1 when the ventilation valve is in a closed state, and the overall dimension of the whole ventilation valve is not enlarged. The manual pressing rod is pressed towards the direction of the valve seat to open the valve cavity, so that a user can manually open the two-way vent valve conveniently.
A sealing element 9 is arranged on the valve seat 2, the sealing element 9 comprises a sealing inner ring and a sealing outer ring which are arranged into an integral structure, and the sealing inner ring and the sealing outer ring are arranged at intervals in the radial direction of the valve body 1; the inner sealing ring is used for compressing and sealing between the valve seat 2 and the valve core 3, and the outer sealing ring is used for compressing and sealing between the valve seat 2 and the sealing seat 8.
When in use, the two-way vent valve is arranged on the storage and transportation device through the external thread structure, and a sealing ring 10 is tightly pressed between the two-way vent valve and the storage and transportation device and used for sealing the installation part between the two-way vent valve and the storage and transportation device.
When there is no pressure difference between the inside and the outside of the storage and transportation device or the pressure difference does not reach the opening threshold of the bidirectional vent valve, the bidirectional vent valve is in a normally closed state, as shown in fig. 1.
When the internal pressure of the storage and transportation device is higher than the external pressure and the differential pressure reaches the exhaust pressure threshold of the two-way vent valve, as shown in fig. 2, the fluid inside the storage and transportation device pushes the valve core 3 and compresses the valve core reset spring 6, so that the through hole 21 on the valve seat 2 is opened, the valve cavity of the two-way vent valve can be communicated with the external environment, the high-pressure fluid inside the storage and transportation device is exhausted to the outside, and after the exhaust is finished, the two-way vent valve returns to the normally closed state.
When the internal pressure of the storage and transportation device is smaller than the external pressure and the pressure difference reaches the air inlet pressure threshold value of the two-way vent valve, the external fluid of the storage and transportation device pushes the valve core 3 and the valve seat 2 to compress the valve seat reset spring 4, so that the valve cavity of the valve body 1 is opened, the high-pressure fluid outside the storage and transportation device flows into the storage and transportation device, and the upper vent valve and the lower vent valve return to the normally closed state after air suction is finished.
When a certain pressure difference exists between the inside and the outside of the storage and transportation device, but the pressure difference does not reach the air inlet pressure or the exhaust pressure threshold value of the bidirectional vent valve, the bidirectional vent valve is in a normally closed state, and the pressure can be released manually according to the use condition; as shown in fig. 3, the valve cavity can be opened by the manual pressing rod 32 of the valve core 3 through manual pressing to compress the valve seat return spring 4, so that the storage and transportation device is communicated with the external environment, fluid inside and outside the storage and transportation device can be exchanged, the purpose of balancing the pressure inside and outside the storage and transportation device is achieved, and the storage and transportation device is not influenced by the pressure difference between the inside and the outside and has a better transportation state.
In the embodiment 1, the valve body 1 is made of aluminum alloy, and has the advantages of light weight, high strength and good corrosion resistance; the valve seat reset spring 4 and the valve core reset spring 6 are both stainless steel precision springs, and have the advantages of good temperature resistance, high strength, strong impact resistance, high control precision of air intake and exhaust opening pressure and the like.
The utility model discloses an embodiment 3, this embodiment and embodiment 1's difference lie in, and in embodiment 1, the annular arch on the case spring holder constitutes case reset spring limit structure, and annular step on the case constitutes valve seat reset spring limit structure, and in this embodiment, sets up the limit structure of annular groove as corresponding reset spring on case spring holder and case.
The utility model discloses an embodiment 4, this embodiment and embodiment 1's difference lie in, and in embodiment 1, the intercommunicating pore on the reset spring seat and the perforating hole on the valve seat correspond the setting each other along the valve body axial, and in this embodiment, the intercommunicating pore on the reset spring seat and the perforating hole on the valve seat stagger the setting each other along the valve body axial.
The above description is only a preferred embodiment of the present application, and not intended to limit the present application, the scope of the present application is defined by the appended claims, and all changes in equivalent structure made by using the contents of the specification and the drawings of the present application should be considered as being included in the scope of the present application.
Claims (10)
1. A two-way ventilation valve comprises a valve body, wherein a valve cavity is arranged in the valve body and is communicated along the axial direction of the valve body;
a valve seat and a valve core are arranged in the valve cavity;
the valve seat is movably arranged along the axial direction of the valve body, and is provided with a through hole which penetrates along the axial direction of the valve body;
a valve seat reset spring is arranged between the reset spring seat and the valve seat and used for elastically pressing the valve seat onto a sealing seat arranged on the valve body;
the valve core is arranged on one side of the valve seat, which is back to the reset spring seat, is movably arranged along the axial direction of the valve body and is used for plugging a through hole on the valve seat;
the two-way ventilation valve also comprises a valve core reset spring, and the valve core reset spring is used for jacking the valve core to the valve seat;
the method is characterized in that:
the valve body is also provided with a valve core spring seat, the valve core spring seat is arranged at one end of the valve body, which is back to the return spring seat, and the valve core return spring is arranged between the valve core spring seat and the valve core;
and at least one side of the valve core in the axial direction of the valve body is provided with a guide post, and the guide post is assembled on a valve core spring seat and/or a valve seat on the corresponding side in a guiding manner.
2. The bi-directional vent valve of claim 1, wherein: the valve core spring seat and the valve body are arranged in a split mode, and the valve core spring seat is detachably fixed on the valve body.
3. The bi-directional venting valve of claim 1 or 2, wherein: and the valve core reset spring limiting structure is arranged on the valve core spring seat and used for supporting and limiting the valve core reset spring.
4. The bi-directional vent valve of claim 3, wherein: the valve core reset spring limiting structure is an annular bulge on a valve core spring seat, and the peripheral surface of the annular bulge is in supporting fit with the valve core reset spring.
5. The bi-directional venting valve of claim 1 or 2, wherein: and the valve core is provided with a valve seat reset spring limiting structure for supporting and limiting the valve seat reset spring.
6. The bi-directional vent valve of claim 5, wherein: the valve seat reset spring limiting structure is an annular step on the valve core, and the peripheral surface of the annular step is in supporting fit with the valve seat reset ring.
7. The bi-directional venting valve of claim 1 or 2, wherein: a guide post is arranged on one side of the valve core close to the valve seat, and a guide hole in guide fit with the guide post is arranged in the center of the valve seat;
when the valve core and the valve seat are abutted together, the tail end of the guide post is positioned in the guide hole.
8. The bi-directional venting valve of claim 1 or 2, wherein: the valve core spring holder is provided with a sunken groove sunken towards the direction close to the valve seat, one side of the valve core far away from the guide post is provided with a manual pressing rod, the center of the bottom of the sunken groove is provided with a through hole, and the through hole is used for being matched with the manual pressing rod in a guiding manner.
9. The bi-directional vent valve of claim 8, wherein: the manual pressing rod penetrates through a through hole in the bottom of the sinking groove, the tail end of the manual pressing rod is located in the sinking groove, and the manual pressing rod is pressed towards the valve seat to open the valve cavity.
10. The bi-directional venting valve of claim 1 or 2, wherein: the valve seat is provided with a sealing element, and the sealing element comprises a sealing inner ring and a sealing outer ring;
the sealing inner ring and the sealing outer ring are arranged at intervals in the radial direction of the valve body;
the sealing outer ring is used for being pressed and sealed with the sealing seat by the valve seat, and the sealing inner ring is used for being pressed and sealed with the valve core by the valve seat.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202020026199.6U CN211423483U (en) | 2020-01-07 | 2020-01-07 | Two-way ventilation valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202020026199.6U CN211423483U (en) | 2020-01-07 | 2020-01-07 | Two-way ventilation valve |
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CN211423483U true CN211423483U (en) | 2020-09-04 |
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CN202020026199.6U Active CN211423483U (en) | 2020-01-07 | 2020-01-07 | Two-way ventilation valve |
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Cited By (6)
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CN112128443A (en) * | 2020-10-30 | 2020-12-25 | 杭州鼎升机械有限公司 | A breather valve for IBC bucket |
CN113404903A (en) * | 2021-06-29 | 2021-09-17 | 韩劲草 | Quick pressure-reducing breather valve |
CN113915387A (en) * | 2021-11-05 | 2022-01-11 | 江西洪都航空工业集团有限责任公司 | Aircraft oil tank breather valve |
WO2022151619A1 (en) * | 2021-01-12 | 2022-07-21 | 江苏时代新能源科技有限公司 | Bidirectional ventilation valve, battery and power device |
CN114938608A (en) * | 2022-05-19 | 2022-08-23 | 一巨自动化装备(上海)有限公司 | Anti-condensation structure and method of motor controller |
CN116293009A (en) * | 2022-12-02 | 2023-06-23 | 广东聚腾环保设备有限公司 | Safety valve with pressure relief and supercharging air inlet and use method thereof |
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2020
- 2020-01-07 CN CN202020026199.6U patent/CN211423483U/en active Active
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112128443A (en) * | 2020-10-30 | 2020-12-25 | 杭州鼎升机械有限公司 | A breather valve for IBC bucket |
KR102536081B1 (en) | 2021-01-12 | 2023-05-26 | 지앙수 컨템포러리 엠퍼렉스 테크놀로지 리미티드 | Two-way vent valves, batteries and electrical devices |
WO2022151619A1 (en) * | 2021-01-12 | 2022-07-21 | 江苏时代新能源科技有限公司 | Bidirectional ventilation valve, battery and power device |
KR20220158862A (en) * | 2021-01-12 | 2022-12-01 | 지앙수 컨템포러리 엠퍼렉스 테크놀로지 리미티드 | Two-way vent valves, batteries and electrical devices |
JP2023530776A (en) * | 2021-01-12 | 2023-07-19 | ジアンス・コンテンポラリー・アンプレックス・テクノロジー・リミテッド | Two-way vent valves, batteries and power consumers |
EP4075033A4 (en) * | 2021-01-12 | 2023-08-09 | Jiangsu Contemporary Amperex Technology Limited | TWO-WAY VENT VALVE, BATTERY AND POWER DEVICE |
US11949122B2 (en) | 2021-01-12 | 2024-04-02 | Jiangsu Contemporary Amperex Technology Limited | Bidirectional vent valve, battery, and electrical device |
JP7529884B2 (en) | 2021-01-12 | 2024-08-06 | ジアンス・コンテンポラリー・アンプレックス・テクノロジー・リミテッド | Two-way vent valve, battery and power consumption device |
CN113404903A (en) * | 2021-06-29 | 2021-09-17 | 韩劲草 | Quick pressure-reducing breather valve |
CN113915387A (en) * | 2021-11-05 | 2022-01-11 | 江西洪都航空工业集团有限责任公司 | Aircraft oil tank breather valve |
CN114938608A (en) * | 2022-05-19 | 2022-08-23 | 一巨自动化装备(上海)有限公司 | Anti-condensation structure and method of motor controller |
CN116293009A (en) * | 2022-12-02 | 2023-06-23 | 广东聚腾环保设备有限公司 | Safety valve with pressure relief and supercharging air inlet and use method thereof |
CN116293009B (en) * | 2022-12-02 | 2023-10-13 | 广东聚腾环保设备有限公司 | Safety valve with pressure relief and supercharging air inlet and use method thereof |
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