CN115992902B - Automatic opening and closing PV valve device for air pipe - Google Patents
Automatic opening and closing PV valve device for air pipe Download PDFInfo
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- CN115992902B CN115992902B CN202310286420.XA CN202310286420A CN115992902B CN 115992902 B CN115992902 B CN 115992902B CN 202310286420 A CN202310286420 A CN 202310286420A CN 115992902 B CN115992902 B CN 115992902B
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Abstract
The invention relates to the field of valves for ships, in particular to an automatic opening and closing PV valve device of an air pipe, wherein a plurality of supporting seats are uniformly distributed on the circumference of the upper end of a positive pressure valve disc, a plurality of supporting guide rods are respectively connected upwards from the supporting seats, the supporting guide rods are attached to the circumference of an inner hole of a pontoon, the lower end of the pontoon is supported on the supporting seats, the supporting guide rods are pulled to the upper end of a negative pressure valve disc through springs, a limiting lever is connected to the pontoon, one end of the limiting lever is connected to the lower end face of the pontoon, the other end of the limiting lever is connected to a supporting frame at the upper end of the positive pressure valve disc, a horizontal limiting pin is vertically arranged in the middle of the limiting lever, and a horizontal limiting bayonet corresponding to the rotation of the limiting lever and driving the horizontal limiting pin to be clamped in is arranged at the upper part of a negative pressure pull rod. The limiting lever is adopted to rotate along with the rising of the pontoon when the pontoon is immersed in water, so that the horizontal limiting pin is symmetrically clamped into the groove structure of the horizontal limiting bayonet, the upper limit of the pontoon and the lower limit seal of the negative pressure valve disc are effectively ensured, the stability of the negative pressure pull rod is considered, and the stable operation of each working condition is ensured.
Description
Technical Field
The invention relates to a valve structure, in particular to an automatic opening and closing PV valve device for an air pipe.
Background
The pressure control of the existing ship ballast tank is realized through an air pipe with a PV valve, the PV valve with the patent application number 202011283532.2 of the applicant is used for positive pressure relief, negative pressure pressurization and water immersion sealing, the positive pressure relief needs to overcome the acting force of a pressure spring, the negative pressure pressurization needs to overcome the acting force of a negative pressure valve disc spring, both springs are of coil spring structures, the restoring force and the service life of the springs are limited greatly, and the problems that the restoring force cannot meet the requirements of quick return, the elasticity is easy to lose efficacy and the like exist. In addition, when soaking, the float pulls the negative pressure valve disc to keep airtight by the upward pulling force of the pull rod of the negative pressure valve disc, the upper part of the pull rod is limited by the interior of the float and can be lifted and lowered, the pull rod is impacted by a water body, the negative pressure valve disc and the float are damaged, and meanwhile, the hidden danger that the negative pressure valve disc is blocked in the float in a deflection manner, and the negative pressure valve disc is opened in a deflection manner and the negative pressure sealing surface is damaged exists.
Disclosure of Invention
The invention provides an automatic opening and closing PV valve device for an air pipe, which has a compact structure and can effectively ensure stable opening and closing.
The technical scheme adopted by the invention is as follows: the utility model provides an automatic PV valve device of opening and close of air hose, includes base, casing, malleation valve disc, negative pressure valve disc, flotation pontoon, communicates the support casing on the base, and the casing bottom sets up the malleation sealed face, and malleation valve disc crimping is equipped with the outside opening of intercommunication on the casing of malleation valve disc periphery, and the negative pressure through-hole is seted up at malleation valve disc center, and the negative pressure through-hole lower mouth sets up the negative pressure sealed face, and the negative pressure valve disc is by supreme crimping on the negative pressure sealed face down, and negative pressure valve disc center connects out the negative pressure pull rod up, its characterized in that: the circumference of the upper end of the positive pressure valve disc is uniformly and fixedly connected with a plurality of supporting seats, the supporting seats are respectively connected with a plurality of supporting guide rods upwards, the supporting guide rods are attached to the circumference of an inner hole of the pontoon, the lower end of the pontoon is supported on the supporting seats, the upper part of the supporting guide rods is connected with the upper end of a spring, the lower end of the spring is connected with the upper end of the negative pressure valve disc, the pontoon is connected with a limiting lever, the limiting lever comprises a transverse lever part and a vertical lever part which are connected into a whole, two ends of the transverse lever part are respectively connected with the pontoon and the supporting frame, the upper end of the vertical lever part is vertically connected with the horizontal limiting pin, the supporting frame is fixedly arranged at the upper end of the positive pressure valve disc, the upper part of the negative pressure pull rod is provided with a horizontal limiting bayonet, and the vertical lever part rotates to drive the horizontal limiting pin to be clamped into the horizontal limiting bayonet.
The buoy is connected with two limiting levers in a central symmetry manner, two horizontal limiting bayonets are symmetrically arranged on the upper portion of the negative pressure pull rod, and the vertical lever portions of the two limiting levers rotate to drive the upper horizontal limiting pins of the two limiting levers to be clamped into the two horizontal limiting bayonets.
The lower end face of the pontoon is connected with the upper end of the pull-in frame, the transverse lever part is provided with pull-in waist slots along the length directions of the two ends, and the lower end of the pull-in frame is connected in the pull-in waist slots in a penetrating way.
The horizontal limiting bayonet is of a round of groove structure at the upper part of the negative pressure pull rod.
The support frame is radially arranged above the negative pressure through hole in a crossing mode along the positive pressure valve disc, and the negative pressure pull rod slides through the middle of the support frame.
The upper part of the supporting guide rod is hooked with the upper end of the spring through the spring hook, and the upper end and the lower end of the spring are connected and then are in a vertical state.
The shell of the periphery of the positive pressure valve disc is provided with a plurality of openings which are communicated with the outside and uniformly distributed around the circumference of the shell.
The inner wall of the shell is provided with an opening limiting boss for limiting the positive pressure valve disc to rise.
The top of the shell is provided with an air vent with an air-permeable cap or cover.
The beneficial effects of the invention are as follows: the spring is adopted to vertically pull and connect the negative pressure valve disc, so that the reset efficiency can be effectively improved and the service life can be effectively prolonged; the two groups of the limit levers symmetrically arranged are used for ascending and rotating along with the pontoon when the pontoon is immersed in water, so that the two horizontal limit pins are symmetrically and rotationally clamped into the two sides of the groove structure of the horizontal limit bayonet, the upper limit of the pontoon and the lower limit seal of the negative pressure valve disc are effectively ensured, the stability of the negative pressure pull rod is ensured, and the stable operation of each working condition of the PV valve device is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic perspective view of the internal structure of the present invention;
FIG. 3 is a schematic perspective view of a limit lever and a positive and negative pressure valve disc according to the present invention;
fig. 4 is a schematic perspective view of the support frame of the present invention on a positive pressure valve disc.
In the figure: the device comprises a base 1, a shell 2, a positive pressure sealing surface 3, an opening 4, an opening limiting boss 5, an air vent 6, a positive pressure valve disc 7, a negative pressure through hole 8, a negative pressure sealing surface 9, a negative pressure valve disc 10, a negative pressure pull rod 11, a supporting seat 12, a supporting guide rod 13, a spring hook 14, a spring 15, a pontoon 16, a pull-connecting frame 17, a transverse lever part 18, a vertical lever part 19, a horizontal limiting pin 20, a horizontal limiting bayonet 21 and a supporting frame 22.
Description of the embodiments
The invention is further described below with reference to the drawings and examples.
Fig. 1-4 show: an automatic opening and closing PV valve device for an air pipe comprises a base 1, a shell 2, a positive pressure valve disc 7, a negative pressure valve disc 10, a negative pressure pull rod 11, a supporting seat 12, a supporting guide rod 13, a spring hook 14, a spring 15, a pontoon 16, a pull-connecting frame 17, a transverse lever part 18, a vertical lever part 19, a horizontal limiting pin 20 and a supporting frame 22.
The base 1 is communicated with the support shell 2, the bottom of the shell 2 is provided with a positive pressure sealing surface 3, a positive pressure valve disc 7 is in pressure connection with the positive pressure sealing surface 3, the inner side of the shell 1 is provided with an opening limiting boss 5 for limiting the rising height of the upper end of the positive pressure valve disc, a plurality of openings 4 communicated with the outside are uniformly distributed on the shell 2 around the circumference of the periphery of the positive pressure valve disc 7, the center of the positive pressure valve disc 7 is provided with a negative pressure through hole 8, the upper end of the positive pressure valve disc 7 is connected with a support frame 22 (see a specific position structure shown in fig. 4) which spans the negative pressure through hole 8 in the diameter direction, the lower opening of the negative pressure through hole 8 is provided with a negative pressure sealing surface 9, a negative pressure valve disc 10 is in pressure connection with the negative pressure sealing surface 9 from bottom to top, the center of the negative pressure valve disc 10 upwards is connected with a negative pressure pull rod 11, the negative pressure pull rod 11 can be guided and connected with the support frame 22 in a penetrating mode (see a specific penetrating structure in fig. 4, and a transverse lever part is symmetrical in the center, and a transverse lever part is omitted from a transverse lever part and a vertical lever part towards the outer side in order to better display the position and the connecting structure of the support frame); the upper end of the positive pressure valve disc 10 is also circumferentially and uniformly provided with three supporting seats 12, the three supporting seats 12 are respectively connected with three supporting guide rods 13 upwards (in fig. 1, the supporting guide rods are not shown in fig. 2 and 3 due to the cross-section reason), the three supporting guide rods 13 are attached to the circumference of an inner hole of a pontoon 16, the lower end of the pontoon 16 is supported on the supporting seats 12, the upper part of the supporting guide rods 13 is connected with a spring hook 14, the spring hook 14 is vertically downwards connected with the upper end of a spring 15 in a hanging manner, the lower end of the spring 15 is connected with the upper end of the negative pressure valve disc 10, the lower end of the pontoon 16 is respectively and centrally and symmetrically connected with two pull-connecting frames 17 (in fig. 1, only one side is shown in the cross-section reason, two sides are shown and symmetrically arranged in fig. 2 and 3), the outer ends of the two transverse lever parts 18 are respectively provided with pull-connecting waist grooves, the lower ends of the pull-connecting frames 17 are connected in the pull-connecting waist grooves in a penetrating manner, the outer ends of each transverse lever part are positioned on one side of the pull rod, the inner ends of the transverse lever parts are hinged on the other side of the negative pressure lever, the middle part is vertically connected with a vertical lever part 19, the vertical lever part 19 is vertically connected with the vertical lever part 19, the vertical part 19 is vertically connected with a horizontal limiting pin 20, and a clamping horizontal bayonet structure 20 is arranged on the upper ring 21 of the negative pressure lever 11.
In this embodiment, the top of the housing 1 is provided with ventilation holes 6 with a ventilation cap or cover.
On the basis of the embodiment, an emergency release plug screw is externally connected to the side edge of the base 1, and the technology is the prior art and is not marked in the drawing.
On the basis of the embodiment, the end face of the positive pressure valve disc corresponding to the positive pressure sealing surface and the end face of the negative pressure valve disc corresponding to the negative pressure sealing surface can be provided with sealing rings, or the sealing surfaces are provided with sealing rings, and the sealing rings can be connected or embedded.
When the device is used, when the pressure in the ballast tank is too high, the base is communicated with the positive pressure valve disc 7 on the positive pressure sealing surface in the shell 2, the air pressure is discharged from the opening at the periphery of the shell 2, and when the pressure in the ballast tank is not too high, the positive pressure valve disc and the pontoon are pressed down, and the positive pressure valve disc compresses the positive pressure sealing surface to finish the pressure discharge; when the pressure in the ballast tank is negative pressure, the positive pressure valve disc 7 is pressed on the positive pressure sealing surface by external air pressure, the external air pressure acts on the negative pressure valve disc 10 through the negative pressure through hole 8, the negative pressure valve disc 10 is separated from the negative pressure sealing surface to pressurize the ballast tank communicated with the base, and when the pressure in the ballast tank is sufficient, the negative pressure valve disc is pulled by the spring to press the negative pressure sealing surface, and the pressurization is finished; when the water body is immersed, the water body enters the shell 2, the water body continuously rises to drive the pontoon 16 to float upwards, at this time, the positive pressure valve disc 7, the supporting seat 12 and the supporting guide rod are integrally and fixedly connected and do not rise by the floating force of the water body, the supporting guide rod 13 is only used as the lifting guide of the pontoon, meanwhile, the negative pressure valve disc keeps pressing the negative pressure sealing surface due to the tensile force of the spring, the pontoon floats upwards and drives the transverse lever part 18 to rotate through the pull-in frame 17, the vertical lever part 19 drives the horizontal limiting pin 20 to rotationally clamp into the horizontal limiting bayonet 21 of the negative pressure pull rod 11, the two symmetrical horizontal limiting pins are clamped with the upper part of the negative pressure pull rod 11, the stability of the negative pressure pull rod is ensured, the negative pressure valve disc is not impacted by the water body, the negative pressure valve disc 10 is limited and pulled and opened by the gravity of the water body, even if the pontoon after the negative pressure pull rod is limited by larger buoyancy, the negative pressure valve disc is limited, the negative pressure pull rod can be better stabilized and the negative pressure sealing surface is pressed by the negative pressure because the negative pressure valve disc is limited by the negative pressure pull rod in the reverse limiting direction, and the negative pressure sealing surface is effectively prevented from entering water.
Claims (7)
1. The utility model provides an automatic PV valve device of opening and close of air hose, including base (1), casing (2), malleation valve disc (7), negative pressure valve disc (10), flotation pontoon (16), communicate support casing (2) on base (1), casing (2) bottom sets up malleation sealed face (3), malleation valve disc (7) crimping is on malleation sealed face (3), be equipped with opening (4) outside intercommunication on the casing of malleation valve disc (7) periphery, negative pressure through-hole (8) are seted up at malleation valve disc (7) center, negative pressure through-hole (8) lower extreme sets up negative pressure sealed face (9), negative pressure valve disc (10) are by supreme crimping down on negative pressure sealed face (9), negative pressure valve disc (10) center connects negative pressure pull rod (11) up, its characterized in that: the positive pressure valve disc (7) is characterized in that a plurality of supporting seats (12) are uniformly and fixedly connected to the circumference of the upper end of the positive pressure valve disc (7), a plurality of supporting guide rods (13) are respectively connected upwards to form a plurality of supporting guide rods (13), the supporting guide rods (13) are attached to the circumference of an inner hole of a pontoon (16), the lower end of the pontoon (16) is supported on the plurality of supporting seats (12), the upper end of a spring (15) is connected to the upper end of a negative pressure valve disc (10), a limiting lever is connected to the pontoon (16), the limiting lever comprises a transverse lever part (18) and a vertical lever part (19) which are integrally connected, two ends of the transverse lever part (18) are respectively connected to the pontoon (16) and a supporting frame (22), the lower end surface of the pontoon (16) is connected to the upper end of a pull-in frame (17), a pull-in waist groove is formed in the length direction of two ends of the transverse lever part (18), the lower end of the pull-in-frame is connected to the pull-in waist groove, the upper end of the vertical lever part (19) is vertically connected to a horizontal limiting pin (20), the supporting frame (22) is fixedly arranged on the upper end of the negative pressure valve disc (10), the positive pressure valve disc (7) is connected to the positive pressure valve disc (19), the positive pressure valve disc (21) is arranged on the positive pressure valve disc (21) and the negative pressure valve disc (11) and the positive pressure valve disc (11) and the negative pressure valve disc (21) and the negative pressure valve rod (21) and the positive pressure valve rod (11) and the negative pressure valve rod, the vertical lever part (19) rotates to drive the horizontal limiting pin clamp (20) to enter the horizontal limiting bayonet (21).
2. An air pipe automatic opening and closing PV valve device according to claim 1, characterized in that: the buoy (16) is centrally and symmetrically connected with two limiting levers, two horizontal limiting bayonets (21) are symmetrically arranged on the upper portion of the negative pressure pull rod (11), and the vertical lever portions of the two limiting levers rotate to drive the upper horizontal limiting pins of the two limiting levers to be clamped into the two horizontal limiting bayonets (21).
3. An air pipe automatic opening and closing PV valve device according to claim 1 or 2, characterized in that: the horizontal limiting bayonet (21) is of a round of groove structure at the upper part of the negative pressure pull rod (11).
4. An air pipe automatic opening and closing PV valve device according to claim 1, characterized in that: the upper part of the supporting guide rod (13) is connected with the upper end of the spring (15) in a hanging way through a spring hook (14), and the upper end and the lower end of the spring (15) are connected and then are in a vertical state.
5. An air pipe automatic opening and closing PV valve device according to claim 1, characterized in that: the shell of the periphery of the positive pressure valve disc (7) is provided with a plurality of openings (4) which are communicated with the outside and uniformly distributed around the circumference of the shell.
6. An air pipe automatic opening and closing PV valve device according to claim 1, characterized in that: an opening limiting boss (5) for limiting the positive pressure valve disc (7) to ascend is arranged on the inner wall of the shell (2).
7. An air pipe automatic opening and closing PV valve device according to claim 1, characterized in that: the top of the shell (2) is provided with an air vent (6) with an air-permeable cap or cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310286420.XA CN115992902B (en) | 2023-03-23 | 2023-03-23 | Automatic opening and closing PV valve device for air pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310286420.XA CN115992902B (en) | 2023-03-23 | 2023-03-23 | Automatic opening and closing PV valve device for air pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115992902A CN115992902A (en) | 2023-04-21 |
| CN115992902B true CN115992902B (en) | 2023-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310286420.XA Active CN115992902B (en) | 2023-03-23 | 2023-03-23 | Automatic opening and closing PV valve device for air pipe |
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| Country | Link |
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| CN (1) | CN115992902B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906598B (en) * | 2023-09-13 | 2023-11-24 | 江苏南极机械有限责任公司 | High-speed exhaust PV valve for ballast tank |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3103170U (en) * | 2004-02-03 | 2004-07-29 | 新倉工業株式会社 | Float automatic opening and closing type air pipe head device |
| CN202065511U (en) * | 2011-05-23 | 2011-12-07 | 范建国 | Self-closing device for air pipes of ballast system in cargo hold of ship |
| JP6030788B1 (en) * | 2016-03-22 | 2016-11-24 | 新倉工業株式会社 | Automatic air pipe closing device |
| CN214699376U (en) * | 2020-11-16 | 2021-11-12 | 江苏南极机械有限责任公司 | PV valve for ballast tank |
| CN214743590U (en) * | 2020-11-16 | 2021-11-16 | 江苏南极机械有限责任公司 | PV valve protection architecture that soaks |
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2023
- 2023-03-23 CN CN202310286420.XA patent/CN115992902B/en active Active
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| CN115992902A (en) | 2023-04-21 |
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