CN114576400A - Sea-dredging one-way valve - Google Patents
Sea-dredging one-way valve Download PDFInfo
- Publication number
- CN114576400A CN114576400A CN202210238925.4A CN202210238925A CN114576400A CN 114576400 A CN114576400 A CN 114576400A CN 202210238925 A CN202210238925 A CN 202210238925A CN 114576400 A CN114576400 A CN 114576400A
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- Prior art keywords
- sealing
- inner cavity
- valve body
- sea
- opening
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/06—Check valves with guided rigid valve members with guided stems
- F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
- F16K1/465—Attachment of sealing rings to the valve seats
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0209—Check valves or pivoted valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
Abstract
The invention discloses a sea-dredging one-way valve, which comprises: the valve body is provided with a sealing opening at one end and a valve body inner cavity communicated with the sealing opening is formed inside the valve body; the valve core comprises a sealing body and a rod body which are fixedly connected, the sealing body is movably matched and connected with the sealing opening, and the rod body penetrates through the sealing opening and is inserted into the inner cavity of the valve body; the mounting seat is slidably mounted on the rod body along the extending direction of the rod body; the elastic piece is sleeved on the rod body, and two opposite ends of the elastic piece are respectively elastically abutted against the upper surface of the upper inner cavity and the mounting seat so as to enable the sealing body to be in sealing abutment with the sealing opening; the locking piece is fixedly connected with one end of the rod body, which is far away from the sealing body; the sea-through one-way valve can effectively avoid the influence of seawater and marine life on the performance of the elastic part, and the sealing is more reliable when the external seawater pressure is higher, so that the sea-through one-way valve can be widely used for discharging high-pressure gas of various submersibles under water.
Description
Technical Field
The invention relates to the technical field of one-way valves, in particular to a sea-going one-way valve.
Background
The check valve is also called as a check valve or a check valve, and the opening and closing piece is automatically opened or closed by the flowing force of the medium to prevent the medium from flowing backwards. The check valve has the characteristics of simple structure, stable performance, convenience in mounting and dismounting, wide application range and the like, and is widely applied to industrial production.
The publication number CN213575742U discloses an axial flow check valve, which closes a valve by the reset force of a valve core which wants to reset a sealing port, and the structure of the axial flow check valve is that a spring is in direct contact with seawater in a deep sea environment, and the performance of the spring is poor or even the spring is blocked due to seawater corrosion and marine organism adhesion in the long-term use process.
Disclosure of Invention
In view of the above, there is a need to provide a sea-opening check valve, which solves the problem of the existing check valve that the performance of the check valve deteriorates due to seawater corrosion and marine organism adhesion growth in the deep sea environment.
According to one aspect of the present invention, there is provided a sea chest valve for venting high pressure gas in a submersible to the sea, the sea chest valve comprising:
the valve body is provided with a sealing opening at one end, and a valve body inner cavity communicated with the sealing opening is formed inside the valve body;
the valve core comprises a sealing body and a rod body, the sealing body is movably matched and connected with the sealing opening and can seal the sealing opening, and the rod body is fixedly connected with the sealing body and is inserted into the inner cavity of the valve body;
the mounting seat is slidably mounted on the rod body along the extension direction of the rod body, the peripheral wall of the mounting seat is in transition fit and sliding connection with the inner cavity of the valve body so as to divide the inner cavity of the valve body into an upper inner cavity and a lower inner cavity with relatively adjustable volumes, the upper inner cavity is positioned on one side close to the sealing opening, and a through hole for communicating the upper inner cavity with the lower inner cavity is formed in the mounting seat;
the locking piece is fixedly connected with one end of the rod body, which is far away from the sealing body, so as to abut against the mounting seat;
the elastic piece is sleeved on the rod body, and two opposite ends of the elastic piece are respectively elastically abutted with the upper surface of the upper inner cavity and the mounting seat so as to enable the sealing body to be in sealing abutment with the sealing opening;
when the mounting seat is impacted by airflow from the lower inner cavity to the upper inner cavity, the airflow sequentially passes through the through hole and overflows from the upper inner cavity to the sealing opening.
According to some embodiments, the sealing opening is tapered, the end of the sealing opening with a small radial section is communicated with the upper inner cavity, and the contact surface of the sealing opening and the sealing body is a first wedge-shaped surface.
According to some embodiments, the sealing structure further comprises a retainer ring, wherein a limiting groove is further formed in the sealing opening, the limiting groove and the first wedge-shaped surface are arranged at intervals and are located on one side, deviating from the inner cavity of the valve body, of the first wedge-shaped surface, the retainer ring is installed in the limiting groove in a limiting mode, and a contact surface, matched with the sealing body, of the retainer ring is a second wedge-shaped surface.
According to some embodiments, the sealing device further comprises a sealing ring, a sealing groove is further formed in the sealing opening between the first wedge-shaped surface and the second wedge-shaped surface, the sealing ring is fixedly installed in the sealing groove, and a contact surface of the sealing ring, which is matched with the sealing body, is a third wedge-shaped surface.
According to some embodiments, the first, second and third wedge surfaces collectively form a tapered sealing surface for sealing the seal body.
According to some embodiments, the mounting seat comprises a limiting ring and a base, the limiting ring is arranged on the outer peripheral wall of the base and is fixedly connected with the outer peripheral wall of the base, the through hole is formed in the base, the limiting ring is in transition fit connection with the inner cavity of the valve body, and the elastic piece is in transition fit connection with the limiting ring.
According to some embodiments, a first partition plate is formed on the valve body between the end of the sealing opening with the small radial section and the upper inner cavity, one end of the elastic member is elastically abutted against the first partition plate, and the other end of the elastic member is elastically abutted against the base.
According to some embodiments, the first partition is annular, and the first partition and the base are coaxially arranged and have the same radius.
According to some embodiments, a second partition plate is further formed on the valve body and located in the inner cavity of the valve body, and the second partition plate and the limiting ring are coaxially arranged and have the same radius.
According to some embodiments, the peripheral wall of the valve body is provided with a connection for mounting the valve body.
Compared with the prior art, the invention has the following beneficial effects:
when the installation seat of the sea-going check valve is not subjected to the air flow with impact force from the lower inner cavity to the upper inner cavity or the impact force of the air flow passing through the through hole cannot push the sealing body to be separated from the sealing opening, the elastic piece applies elastic force to the installation seat to strain the sealing body, so that the sealing body is in sealing and abutting connection with the sealing opening, and the sea-going check valve is in a closed state. In addition, the sealing body outside the sea through one-way valve is more reliably sealed as the sea water pressure is higher. When the mounting seat of the sea-going check valve receives the air flow with impact force from the lower inner cavity to the upper inner cavity, the air flow penetrates through the through hole to push the sealing body to overflow the sealing opening, meanwhile, the mounting seat slides along the rod body, the volumes of the upper inner cavity and the lower inner cavity are adjusted relatively, and then the sea-going check valve is in a one-way opening state, so that the influence on the performance and the service life of the sea-going check valve due to the contact of sea water and marine organisms and the elastic piece is effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description briefly introduces the drawings required to be used in the embodiments or the description in the prior art, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to the drawings without creative efforts for those skilled in the art.
Fig. 1 is a schematic structural diagram of a sea chest check valve provided by the invention.
In the figure: the valve comprises a valve body 1, a valve core 2, a sealing ring 3, a retainer ring 4, an elastic part 5, a mounting seat 6 and a locking part 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a sea-opening check valve, which can exhaust high-pressure gas in a submersible to the sea, and the sea-opening check valve is not contacted with external seawater no matter in the open or closed state of the valve, so as to effectively avoid the influence of seawater and marine life on the performance of the elastic member 5, and when the external seawater pressure is higher, the sealing is more reliable, so that the sea-opening check valve can be widely used for the underwater high-pressure gas exhaust of various submersible, and the specific scheme is as follows.
The sea-dredging one-way valve comprises a valve body 1, a valve core 2, an elastic piece 5, a mounting seat 6 and a locking piece 7, wherein one end of the valve body 1 is provided with a sealing opening, and an inner cavity of the valve body 1 communicated with the sealing opening is formed in the valve body. The valve core 2 comprises a sealing body and a rod body which are fixedly connected, the sealing body is movably matched and connected with the sealing opening, and the rod body penetrates through the sealing opening and is inserted into the inner cavity of the valve body 1. The mount pad 6 is along the extending direction slidable mounting of the body of rod and on the body of rod to divide into the volume with 1 inner chamber of valve body and can adjust relatively last inner chamber and lower inner chamber, go up the inner chamber and be located near sealed open-ended one side, be equipped with the through-hole of inner chamber and lower inner chamber on the mount pad 6, 6 perisporium of mount pad and 1 inner chamber clearance fit connection of valve body. Retaining member 7 and the body of rod deviate from the one end rigid coupling of seal with butt mount pad 6, and its retaining member 7 can specifically be the nut, nut and body of rod threaded connection. The elastic member 5 is sleeved on the rod body and limited in the upper inner cavity to elastically support the mounting seat 6, and the elastic member 5 can be embodied as a coil spring and sleeved on the rod body. When the mounting seat 6 is subjected to air flow with impact force from the lower inner cavity to the upper inner cavity, the air flow sequentially overflows from the sealing opening through the through hole and the upper inner cavity.
In the above scheme, when the mounting seat 6 of the sea-going check valve is not subjected to the air flow with impact force from the lower inner cavity to the upper inner cavity, or the impact force of the air flow passing through the through hole cannot push the sealing body to separate from the sealing opening, the elastic piece 5 applies elastic force to the mounting seat 6 to strain the sealing body, so that the sealing body is in sealing and abutting connection with the sealing opening, and the sea-going check valve is in a closed state. In addition, the sealing body outside the sea through one-way valve is more reliably sealed as the sea water pressure is higher. When the mounting seat 6 of the sea-going check valve receives the air flow with impact force from the lower inner cavity to the upper inner cavity, the air flow penetrates through the through hole to push the sealing body to overflow the sealing opening, meanwhile, the mounting seat 6 slides along the rod body, the volumes of the upper inner cavity and the lower inner cavity are relatively adjusted, and the sea-going check valve is in a one-way opening state, so that the influence on the performance and the service life of the sea-going check valve due to the contact of sea water and marine organisms and the elastic piece 5 is effectively avoided.
According to some embodiments, the sealing opening is tapered, the end of the sealing opening with a small radial section is communicated with the upper inner cavity, and the contact surface of the sealing opening and the sealing body is a first wedge-shaped surface.
In addition, this sea access check valve still includes retaining ring 4, still is equipped with the spacing groove on the sealed opening, and the spacing groove sets up with first wedge face interval and is located one side that first wedge face deviates from the valve body 1 inner chamber, and retaining ring 4 is spacing to be installed in the spacing groove, and retaining ring 4 is the second wedge face with seal matched with contact surface.
Further, this open sea check valve still includes sealing washer 3, still is equipped with the seal groove on being located the sealed opening between first wedge face and the second wedge face, and sealing washer 3 fixed mounting is in the seal groove, and sealing washer 3 is the third wedge face with seal matched with contact surface.
Therefore, the first wedge-shaped surface, the second wedge-shaped surface and the third wedge-shaped surface together form a conical sealing surface, the sealing body is in a conical table shape, and the conical peripheral wall of the sealing body is tightly attached to the conical sealing surface in a sealing mode, so that when the one-way valve is closed, fluid at the sealing opening cannot overflow into the inner cavity of the valve body 1 through the sealing opening, and the performance and the service life of the valve body 1 are damaged.
The mounting seat 6 comprises a limiting ring and a base, the limiting ring is arranged on the outer peripheral wall of the base and is fixedly connected with the base, the through hole is formed in the base, the limiting ring is connected in the inner cavity of the valve body 1 in a transition fit mode, and the elastic piece 5 is connected in the limiting ring in a transition fit mode.
According to some embodiments, a first partition plate is formed on the valve body 1 between the end with the small radial section of the sealing opening and the upper inner cavity, one end of the elastic member 5 is elastically abutted against the first partition plate, the other end of the elastic member is elastically abutted against the base, so that the elastic member 5 is limited in the upper inner cavity, and the sealing body is in sealing abutment with the sealing surface at the sealing opening by the reverse acting force of the elastic member 5, so that the valve body 1 is in a closed state.
In addition, the first partition plate is annular, the first partition plate and the base are coaxially arranged, the radius of the first partition plate is the same, a second partition plate is further formed on the valve body 1 and is located in the inner cavity of the valve body 1, and the second partition plate and the limiting ring are coaxially arranged and have the same radius. Spacing is carried out to the spacing ring of mount pad 6 through the second baffle for when the mount pad 6 of this valve received the air current that has the impact force by lower inner chamber direction up, and the impact force is enough to make 6 atress of mount pad move along the body of rod, the echelonment that the second baffle formed is withstood to elastic component 5, it is spacing to form machinery, and then protection elastic component 5 and case 2 by seal and body of rod constitution, when wherein elastic component 5 is coil spring, and coil spring overlaps and locates on the perisporium of the body of rod.
In addition, in order to facilitate the installation of the valve body 1, the peripheral wall of the valve body 1 is provided with a connector for installing the valve body 1. The connecting piece is of an annular structure and is sleeved on the peripheral wall of the valve body 1, and the connecting body is further provided with a connecting hole so as to fix the valve through the connecting hole.
This sea-going check valve is at the assembly process, runs through the body of rod of case 2 sealed opening and alternates in 1 inner chamber of valve body, and locates the helical spring cover and lie in 1 inner chamber of valve body on the body of rod, retaining member 7 deviates from one end screw thread fixed connection of seal with butt mount pad 6 with the body of rod for helical spring's relative one end is spacing in the top of 1 inner chamber of valve body, and the other end is spacing in the spacing intra-annular of mount pad 6 and base elasticity butt.
Wherein retaining member 7 can specifically be the nut, and the nut deviates from the one end screw thread rigid coupling of seal with the body of rod to make its bottom of mount pad 6 spacing on the body of rod, retaining member 7 can also be the bolt, and the body of rod deviates from one of seal and serves and be equipped with radial locking hole, pegs graft in locking hole with the bolt fastening, can make its bottom of mount pad 6 spacing on the body of rod equally.
Therefore, when the installation seat 6 of the sea-going check valve is not subjected to the air flow with impact force from the lower inner cavity to the upper inner cavity or the impact force of the air flow passing through the through hole cannot push the sealing body to be separated from the sealing opening, the elastic piece 5 applies elastic force to the installation seat 6 to strain the sealing body, so that the sealing body is in sealing and abutting connection with the sealing opening, and the sea-going check valve is in a closed state. In addition, the sealing body outside the sea through one-way valve is more reliably sealed as the sea water pressure is higher. When the mounting seat 6 of the sea-going check valve receives the air flow with impact force from the lower inner cavity to the upper inner cavity, the air flow penetrates through the through hole to push the sealing body to overflow the sealing opening, meanwhile, the mounting seat 6 slides along the rod body, the volumes of the upper inner cavity and the lower inner cavity are relatively adjusted, and the sea-going check valve is in a one-way opening state, so that the influence on the performance and the service life of the sea-going check valve due to the contact of sea water and marine organisms and the elastic piece 5 is effectively avoided.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Claims (10)
1. A sea access check valve for venting high pressure gas to the sea, comprising:
the valve body is provided with a sealing opening at one end, and a valve body inner cavity communicated with the sealing opening is formed inside the valve body;
the valve core comprises a sealing body and a rod body, the sealing body is movably matched and connected with the sealing opening and can seal the sealing opening, and the rod body is fixedly connected with the sealing body and is inserted into the inner cavity of the valve body;
the mounting seat is slidably mounted on the rod body along the extension direction of the rod body, the peripheral wall of the mounting seat is in transition fit and sliding connection with the inner cavity of the valve body so as to divide the inner cavity of the valve body into an upper inner cavity and a lower inner cavity with relatively adjustable volumes, the upper inner cavity is positioned on one side close to the sealing opening, and a through hole for communicating the upper inner cavity with the lower inner cavity is formed in the mounting seat;
the locking piece is fixedly connected with one end of the rod body, which is far away from the sealing body, so as to abut against the mounting seat;
the elastic piece is sleeved on the rod body, and two opposite ends of the elastic piece are respectively in elastic butt joint with the upper surface of the upper inner cavity and the mounting seat, so that the sealing body is in sealing butt joint with the sealing opening.
2. Sea chest according to claim 1,
the sealing opening is conical, the end, with a small radial section, of the sealing opening is communicated with the upper inner cavity, and the contact surface, matched with the sealing body, of the sealing opening is a first wedge-shaped surface.
3. A sea chest according to claim 2 wherein,
still include the retaining ring, still be equipped with the spacing groove on the sealed opening, the spacing groove with first wedge face interval sets up and is located first wedge face deviates from one side of valve body inner chamber, the retaining ring is spacing install in the spacing inslot, the retaining ring with seal matched with contact surface is the second wedge face.
4. A sea chest according to claim 3 wherein,
still include the sealing washer, be located first wedge face with between the second wedge face still be equipped with the seal groove on the sealed opening, sealing washer fixed mounting in the seal groove, the sealing washer with seal matched with contact surface is third wedge face.
5. A sea chest according to claim 4 wherein,
the first wedge surface, the second wedge surface and the third wedge surface together form a tapered sealing surface for sealing the sealing body.
6. A sea chest according to claim 1 wherein,
the mounting base comprises a limiting ring and a base, the limiting ring is arranged on the outer peripheral wall of the base and is fixedly connected with the outer peripheral wall of the base, the through hole is formed in the base, the limiting ring is in transition fit connection with the inner cavity of the valve body, and the elastic piece is in transition fit connection with the limiting ring.
7. A sea chest according to claim 6 wherein,
the valve body between the end with the small radial section of the sealing opening and the upper inner cavity is provided with a first partition plate, one end of the elastic piece is elastically abutted against the first partition plate, and the other end of the elastic piece is elastically abutted against the base.
8. A sea chest according to claim 7 wherein,
the first partition plate is annular, and the first partition plate and the base are coaxially arranged and have the same radius.
9. A sea chest according to claim 8 wherein,
and a second partition plate is also formed on the valve body and positioned in the inner cavity of the valve body, and the second partition plate and the limiting ring are coaxially arranged and have the same radius.
10. A sea chest according to claim 1 wherein,
and the peripheral wall of the valve body is provided with a connecting piece for installing the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210238925.4A CN114576400A (en) | 2022-03-07 | 2022-03-07 | Sea-dredging one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210238925.4A CN114576400A (en) | 2022-03-07 | 2022-03-07 | Sea-dredging one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114576400A true CN114576400A (en) | 2022-06-03 |
Family
ID=81780594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210238925.4A Pending CN114576400A (en) | 2022-03-07 | 2022-03-07 | Sea-dredging one-way valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN114576400A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1101556A (en) * | 1954-06-02 | 1955-10-07 | Improvements to elastic pushers | |
| US4011892A (en) * | 1975-03-14 | 1977-03-15 | Marotta Scientific Controls, Inc. | Three port non-interflow poppet valve |
| CN202597788U (en) * | 2012-03-28 | 2012-12-12 | 浙江澳川液压器材有限公司 | Hydraulic check valve |
| JP2012255471A (en) * | 2011-06-08 | 2012-12-27 | Fuji Koki Corp | Check valve |
| CN110701349A (en) * | 2019-11-13 | 2020-01-17 | 冯森蕾 | Safety valve with anti-blocking structure for electric water heater |
| CN211117808U (en) * | 2019-12-05 | 2020-07-28 | 陕西科技大学 | Detachable T-shaped valve core one-way valve |
| CN113446420A (en) * | 2021-06-25 | 2021-09-28 | 中国电子科技集团公司第四十研究所 | Small-size relief valve |
-
2022
- 2022-03-07 CN CN202210238925.4A patent/CN114576400A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1101556A (en) * | 1954-06-02 | 1955-10-07 | Improvements to elastic pushers | |
| US4011892A (en) * | 1975-03-14 | 1977-03-15 | Marotta Scientific Controls, Inc. | Three port non-interflow poppet valve |
| JP2012255471A (en) * | 2011-06-08 | 2012-12-27 | Fuji Koki Corp | Check valve |
| CN202597788U (en) * | 2012-03-28 | 2012-12-12 | 浙江澳川液压器材有限公司 | Hydraulic check valve |
| CN110701349A (en) * | 2019-11-13 | 2020-01-17 | 冯森蕾 | Safety valve with anti-blocking structure for electric water heater |
| CN211117808U (en) * | 2019-12-05 | 2020-07-28 | 陕西科技大学 | Detachable T-shaped valve core one-way valve |
| CN113446420A (en) * | 2021-06-25 | 2021-09-28 | 中国电子科技集团公司第四十研究所 | Small-size relief valve |
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