CN110701368A - Air inlet and exhaust valve floating ball and air inlet and exhaust valve formed by same - Google Patents

Air inlet and exhaust valve floating ball and air inlet and exhaust valve formed by same Download PDF

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Publication number
CN110701368A
CN110701368A CN201911094040.6A CN201911094040A CN110701368A CN 110701368 A CN110701368 A CN 110701368A CN 201911094040 A CN201911094040 A CN 201911094040A CN 110701368 A CN110701368 A CN 110701368A
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CN
China
Prior art keywords
floating ball
piston
exhaust valve
ball shell
piston cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911094040.6A
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Chinese (zh)
Inventor
隋春升
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuitun Nite Valve Technology Co Ltd
Original Assignee
Kuitun Nite Valve Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kuitun Nite Valve Technology Co Ltd filed Critical Kuitun Nite Valve Technology Co Ltd
Priority to CN201911094040.6A priority Critical patent/CN110701368A/en
Publication of CN110701368A publication Critical patent/CN110701368A/en
Pending legal-status Critical Current

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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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • 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
    • 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
    • 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
    • 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
    • F16K27/12—Covers for housings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

The invention discloses an air inlet and exhaust valve floating ball capable of being adjusted according to system pressure and an air inlet and exhaust valve formed by the same, wherein the air exhaust valve floating ball comprises a floating ball shell (4), an adjusting mechanism adaptive to external pressure is arranged in the floating ball shell (4), and the adjusting mechanism is a piston-shaped mechanism or a balloon-shaped mechanism arranged in an inner cavity of the floating ball shell (4). Compared with the prior art, the invention can be adjusted according to the system pressure, adapts to the pressure change in the conveying pipeline to a certain extent and ensures the safe and smooth conveying pipeline.

Description

Air inlet and exhaust valve floating ball and air inlet and exhaust valve formed by same
Technical Field
The invention relates to an air intake and exhaust valve floating ball and an air intake and exhaust valve formed by the same.
Background
Air often exists in the water conveying pipeline, pipe bursting often occurs under the combined action of water flow and air flow, particularly in a conveying system with long conveying pipelines and large gradient fluctuation, repeated fluctuation of the pipelines often occurs, and under the condition, if water is cut off or air accumulation in the pipelines occurs, water flow is blocked and even water is cut off.
In addition, a plurality of water conveying pipelines adopt PVC pipes, when water is excessively used, the pipes are easy to be sucked flat and deformed or broken due to the action of negative pressure in the pipes, large-area water cut-off is easy to happen to the pipes, normal life of people is affected, a large amount of manpower and material resources are consumed for rush repair, and the problem of normal water supply is solved.
For the above situation, the prior art mainly exhausts through a float type exhaust valve.
The Chinese patent application publication No. CN 104613207A discloses a "pipeline exhaust valve", in which a valve body is mounted at the end of a drain pipe, a water inlet and a water outlet connected with the end of the drain pipe are arranged at the lower part of the pipeline exhaust valve, the pipeline exhaust valve comprises a gas collecting device and a buoy exhaust device which are arranged in the valve body, the gas collecting device is arranged at the lower part of the valve body, the buoy exhaust device is arranged at the upper part of the gas collecting device, the pipeline exhaust valve can be designed into a whole by gas collecting and exhausting, and a gas collecting circular ring is arranged in the valve to concentrate and exhaust bubbles in water flow passing through the valve, but the exhaust valve adopts the principle of a buoy and a lever, so that the condition of failure is easy to occur, in addition, when the air flow in the pipe is too large, the buoy is easy to be directly blown up to block the exhaust port, and because the internal and external pressure differences are too, the exhaust port cannot be opened, so that the exhaust function cannot be achieved, and the reliability is poor.
Chinese patent CN 206093156U discloses an "automatic air intake and exhaust valve for pipeline", wherein a ball outer barrel with a cavity is arranged in a valve body, a floating ball is arranged in the ball outer barrel, and a barrier hole is arranged at the upper part of the wall of the ball outer barrel, so that the inner cavity of the ball outer barrel is communicated with the outer barrel, thereby preventing the floating ball from being jacked up too early due to strong airflow generated at the lower part of the floating ball in the inner cavity of the ball outer barrel during the initial stage of exhaust.
However, in practical use, particularly in a delivery system with a long delivery line and large gradient fluctuation, the phenomenon that the float ball in the exhaust valve is extruded and deformed when the pressure of the intake and exhaust valve is too high often occurs, so that the intake and exhaust valve fails, and the system of the delivery line is seriously crashed.
Therefore, the air inlet and outlet valve floating ball capable of being adjusted according to the system pressure and the air inlet and outlet valve formed by the floating ball can be produced.
Disclosure of Invention
The invention aims to solve the technical problem of providing an air inlet and exhaust valve floating ball capable of being adjusted according to system pressure and an air inlet and exhaust valve formed by the same, which can adapt to pressure change in a conveying pipeline to a certain extent and ensure the safety and smoothness of the conveying pipeline.
In order to solve the technical problems, the invention adopts the technical scheme that: including floater casing (4), its characterized in that: an adjusting mechanism adaptive to external pressure is arranged in the floating ball shell (4), the adjusting mechanism is a piston-shaped mechanism arranged in an inner cavity of the floating ball shell (4), the piston-shaped mechanism comprises a piston cylinder (4-2) and a piston (4-4) in the piston cylinder (4-2), an inner air hole (4-1) is formed in the piston cylinder (4-2) on the inner side of the piston (4-4), the piston cylinder (4-2) on the inner side of the piston (4-4) is communicated with the inner cavity of the floating ball shell (4), an outer air hole (4-5) is formed in the piston cylinder (4-2) on the outer side of the piston (4-4) or the floating ball shell (4), and the piston cylinder (4-2) on the outer side of the piston (4-4) is communicated with a space outside the floating ball shell (.
Or the adjusting mechanism is a balloon-shaped mechanism arranged in the inner cavity of the floating ball shell (4), the balloon-shaped mechanism comprises a spherical bag body (4-7) with elasticity, the spherical bag body (4-7) is a spherical rubber bag body or a hemispherical crown-shaped rubber sheet, and the edge of the hemispherical crown-shaped rubber sheet is connected to the inner wall of the floating ball shell (4), so that the hemispherical crown-shaped rubber sheet and the inner wall of the floating ball shell (4) form an inflated cavity.
Furthermore, a balancing weight (10) is preferably arranged at the bottom in the floating ball shell (4), so that the stability of the floating ball is better.
Furthermore, a spring (4-3) for resetting the piston (4-4) is arranged on the piston cylinder (4-2) at the inner side of the piston (4-4).
Furthermore, a plurality of auxiliary piston mechanisms (4-6) surrounding the outside of the piston cylinder (4-2) can be arranged in the space in the floating ball shell (4) on the outer side of the piston cylinder (4-2), and the auxiliary piston mechanisms (4-6) at least comprise the piston cylinder, the piston, an inner air hole on the inner side of the piston and an outer air hole (4-5) on the outer side of the piston.
Furthermore, the space in the ball housing (4) is preferably provided with a partition (4-9), and the partition (4-9) divides the space in the ball housing (4) into at least one space independent of the adjusting mechanism.
Furthermore, the air intake and exhaust valve floating ball can form an air intake and exhaust valve and comprises a valve body (14), a valve cover (15), a rubber sealing pad (20), a valve column body (16), a protective cover (18) and a floating ball outer barrel (1), and the air intake and exhaust valve floating ball is arranged in the floating ball outer barrel (1).
Furthermore, the inner wall of the outer floating ball barrel (1) is preferably provided with vertical convex ribs (7), and at least 3 convex ribs (7) are arranged on the inner wall of the outer floating ball barrel (1).
Further, the convex rib (7) is preferably one of a vertical plate-shaped rib or a bending of the floating ball outer barrel (1) body, and is most preferably a vertical plate-shaped rib.
As a further improvement, the gas hood (8) is a discus-shaped body with the edge provided with a gas hood butterfly-shaped edge which is turned outwards or the upper surface and the lower surface of the discus-shaped body which are both arc-shaped and convex, and the bottom opening (5) is a hole from the diameter of the gas hood (8) to one half of the diameter of the gas hood (8).
Compared with the prior art, the invention can be adjusted according to the system pressure, adapts to the pressure change in the conveying pipeline to a certain extent and ensures the safe and smooth conveying pipeline.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic top view of fig. 1.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of embodiment 3 of the present invention.
Fig. 5 is a schematic top view of fig. 4.
Fig. 6 is a schematic structural diagram of embodiment 4 of the present invention.
Fig. 7 is a schematic structural diagram of embodiment 5 of the present invention.
Shown in the figure: the device comprises a floating ball outer barrel 1, a barrier hole 2, a blank holder 3, a floating ball 4, an inner hole 4-1, a piston cylinder 4-2, a spring 4-3, a piston 4-4, an outer air hole 4-5, an auxiliary piston mechanism 4-6, a ball bag 4-7, a fixing piece 4-8, a partition plate 4-9, a bottom opening 5, an air cover fixing column 6, a convex edge 7, an air cover 8, a vertical row hole 9, a balancing weight 10, a valve body 14, a valve cover 15, a valve column 16, a first exhaust hole 17, a protective cover 18, a second exhaust hole 19 and a sealing cushion 20.
Detailed Description
Example 1: referring to fig. 1 and 2, which are schematic structural views of embodiment 1 of the present invention, the intake and exhaust valve float includes a float housing 4, an adjusting mechanism adapted to an external pressure is disposed in the float housing 4, the adjusting mechanism includes a piston-like mechanism disposed in an inner cavity of the float housing 4, the piston-like mechanism includes a piston cylinder 4-2 and a piston 4-4 in the piston cylinder 4-2, an inner air hole 4-1 is disposed on the piston cylinder 4-2 inside the piston 4-4, so that the piston cylinder 4-2 inside the piston 4-4 is communicated with the inner cavity of the float housing 4, and an outer air hole 4-5 is disposed on the piston cylinder 4-2 outside the piston 4-4 or the float housing 4, so that the piston cylinder 4-2 outside the piston 4-4 is communicated with a space outside the float housing 4. The bottom in the floating ball shell 4 is preferably provided with a balancing weight 10, so that the stability of the floating ball is better. A spring 4-3 for resetting the piston 4-4 is arranged on the piston cylinder 4-2 at the inner side of the piston 4-4.
When being applied to intake and exhaust valve, intake and exhaust valve floater set up in outer barrel 1 of floater, be equipped with vertical bead 7 on the outer barrel 1 inner wall of floater, bead 7 be vertical plate-like stupefied strip, set up 8 vertical plate-like stupefied strips on outer barrel 1 inner wall a week of floater altogether to this vertical plate-like stupefied strip extends to the end opening 5 department of bottom from the middle part of the outer barrel 1 inner wall of floater, outer barrel 1 of floater is equipped with air shroud 8, air shroud 8 is equipped with the air shroud butterfly limit of outside upset for the edge or upper and lower two sides all is the bellied discus shape body of arc surface, end opening 5 be slightly less than the hole of air shroud 8 diameter.
When the pressure in the conveying pipeline is increased, the piston 4-4 contracts in the piston cylinder 4-2, the air pressure in the inner cavity of the floating ball shell 4 is correspondingly increased, the adaptive pressure range of the air inlet and outlet valve can be greatly improved, and the safety of the pipeline is improved.
Example 2: referring to fig. 3, which is a schematic structural diagram of embodiment 2 of the present invention, compared with embodiment 1, embodiment 2 is different in that: a plurality of auxiliary piston mechanisms 4-6 surrounding the piston cylinder 4-2 are also arranged in the space in the floating ball shell 4 outside the piston cylinder 4-2, each auxiliary piston mechanism 4-6 comprises a piston cylinder, a piston, an inner air hole in the inner side of the piston and an outer air hole 4-5 in the outer side of the piston, and a return spring is arranged on the piston.
Example 3: referring to fig. 4, which is a schematic structural diagram of embodiment 3 of the present invention, compared with the previous embodiments, the difference of this embodiment is: the convex edge 7 is a plurality of bends on the periphery of the wall of the floating ball outer barrel 1 body.
Example 4: referring to fig. 5, which is a schematic structural diagram of embodiment 4 of the present invention, compared to the previous embodiments, this embodiment is an example of an intake/exhaust valve, the intake/exhaust valve float is applied to a valve, the intake/exhaust valve float is installed in a float outer barrel 1 in a valve body 14, a rubber sealing pad 20 is disposed between a valve cover 15 and the valve body 14, a valve cylinder 16 and a protective cover 18 are disposed on the valve cover 15, the valve cylinder 16 is provided with a first exhaust hole 17, and a second exhaust hole 19 is disposed on the protective cover 18.
Example 5: referring to fig. 6, which is a schematic structural diagram of embodiment 5 of the present invention, compared with the previous embodiments, the difference of this embodiment is: the floating ball shell 4 is formed by combining two hemispherical shells, the adjusting mechanism is a ball bag-shaped mechanism arranged in an inner cavity of the floating ball shell 4, the ball bag-shaped mechanism comprises an elastic ball bag body 4-7, the ball bag body 4-7 is a hemispherical crown-shaped rubber sheet, the edge of the hemispherical crown-shaped rubber sheet is connected to the inner wall of the floating ball shell 4 through a fixing piece 4-8, so that the hemispherical crown-shaped rubber sheet and the inner wall of the floating ball shell 4 form an inflatable cavity, and a balancing weight 10 is arranged at the bottom in the floating ball shell 4.
Example 6: referring to fig. 7, which is a schematic structural diagram of embodiment 6 of the present invention, compared with the previous embodiments, the difference of this embodiment is: the space in the inner cavity of the floating ball shell 4 is provided with a partition plate 4-9, and the partition plate 4-9 separates a plurality of spaces independent of the adjusting mechanism in the floating ball shell 4.
Example 7: the present embodiment differs from the previous embodiments in that: the spherical body 4-7 of the adjusting mechanism is a spherical rubber body and is placed in a cavity in the floating ball shell 4 during installation.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention.

Claims (10)

1. The utility model provides an air intake and exhaust valve floater, includes floater casing (4), its characterized in that: an adjusting mechanism which is suitable for the external pressure is arranged in the floating ball shell (4),
the adjusting mechanism is a piston-shaped mechanism arranged in an inner cavity of the floating ball shell (4), the piston-shaped mechanism comprises a piston cylinder (4-2) and a piston (4-4) in the piston cylinder (4-2), an inner air hole (4-1) is formed in the piston cylinder (4-2) on the inner side of the piston (4-4), the piston cylinder (4-2) on the inner side of the piston (4-4) is communicated with the inner cavity of the floating ball shell (4), an outer air hole (4-5) is formed in the piston cylinder (4-2) on the outer side of the piston (4-4) or the floating ball shell (4), and the piston cylinder (4-2) on the outer side of the piston (4-4) is communicated with a space outside the floating ball shell (4);
or the adjusting mechanism is a balloon-shaped mechanism arranged in the inner cavity of the floating ball shell (4), the balloon-shaped mechanism comprises a spherical bag body (4-7) with elasticity, the spherical bag body (4-7) is a spherical rubber bag body or a hemispherical crown-shaped rubber sheet, and the edge of the hemispherical crown-shaped rubber sheet is connected to the inner wall of the floating ball shell (4), so that the hemispherical crown-shaped rubber sheet and the inner wall of the floating ball shell (4) form an inflated cavity.
2. The air intake and exhaust valve floating ball as claimed in claim 1, wherein: a spring (4-3) for resetting the piston (4-4) is arranged on the piston cylinder (4-2) at the inner side of the piston (4-4).
3. The intake/exhaust valve floating ball according to claim 1 or 2, wherein: and a balancing weight (10) is arranged at the bottom in the floating ball shell (4).
4. The intake/exhaust valve floating ball according to claim 1 or 2, wherein: a plurality of auxiliary piston mechanisms (4-6) surrounding the outside of the piston cylinder (4-2) are arranged in the space in the floating ball shell (4) on the outer side of the piston cylinder (4-2), and the auxiliary piston mechanisms (4-6) at least comprise the piston cylinder, the piston, an inner air hole on the inner side of the piston and an outer air hole (4-5) on the outer side of the piston.
5. The air intake and exhaust valve floating ball as claimed in claim 3, wherein: a plurality of auxiliary piston mechanisms (4-6) surrounding the outside of the piston cylinder (4-2) are arranged in the space in the floating ball shell (4) on the outer side of the piston cylinder (4-2), and the auxiliary piston mechanisms (4-6) at least comprise the piston cylinder, the piston, an inner air hole on the inner side of the piston and an outer air hole (4-5) on the outer side of the piston.
6. The intake/exhaust valve floating ball according to claim 1 or 2, wherein: a partition plate (4-9) is arranged in the space in the floating ball shell (4), and the partition plate (4-9) separates at least one space independent of the adjusting mechanism in the floating ball shell (4).
7. The air intake and exhaust valve floating ball as claimed in claim 3, wherein: a partition plate (4-9) is arranged in the space in the floating ball shell (4), and the partition plate (4-9) separates at least one space independent of the adjusting mechanism in the floating ball shell (4).
8. The air intake and exhaust valve floating ball as claimed in claim 4, wherein: a partition plate (4-9) is arranged in the space in the floating ball shell (4), and the partition plate (4-9) separates at least one space independent of the adjusting mechanism in the floating ball shell (4).
9. The air intake and exhaust valve floating ball as claimed in claim 5, wherein: a partition plate (4-9) is arranged in the space in the floating ball shell (4), and the partition plate (4-9) separates at least one space independent of the adjusting mechanism in the floating ball shell (4).
10. The utility model provides an air inlet and exhaust valve, includes valve body (14), valve gap (15), rubber sealing pad (20), valve column body (16), safety cover (18) and outer bucket (1) of floater, its characterized in that: the floating ball outer barrel (1) is internally provided with the air inlet and outlet valve floating ball according to any one of claims 1-9.
CN201911094040.6A 2019-11-11 2019-11-11 Air inlet and exhaust valve floating ball and air inlet and exhaust valve formed by same Pending CN110701368A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911094040.6A CN110701368A (en) 2019-11-11 2019-11-11 Air inlet and exhaust valve floating ball and air inlet and exhaust valve formed by same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911094040.6A CN110701368A (en) 2019-11-11 2019-11-11 Air inlet and exhaust valve floating ball and air inlet and exhaust valve formed by same

Publications (1)

Publication Number Publication Date
CN110701368A true CN110701368A (en) 2020-01-17

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Application Number Title Priority Date Filing Date
CN201911094040.6A Pending CN110701368A (en) 2019-11-11 2019-11-11 Air inlet and exhaust valve floating ball and air inlet and exhaust valve formed by same

Country Status (1)

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CN (1) CN110701368A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR752940A (en) * 1932-07-11 1933-10-03 liquid elevator for supplying fuel to automobile engines, etc.
JP2002195201A (en) * 2000-12-26 2002-07-10 Keisuke Tsutsumi Ball accumulator
CN101004221A (en) * 2006-01-16 2007-07-25 高原 Floating ball self force type control valve
CN202109081U (en) * 2011-06-21 2012-01-11 芜湖市金贸流体科技股份有限公司 Ball valve
CN203757059U (en) * 2014-03-21 2014-08-06 天津瑞实联精密铸造有限公司 Hydraulic double-opening vent valve
CN110715104A (en) * 2019-10-11 2020-01-21 奎屯耐特阀门科技有限公司 Air inlet and outlet valve liner cavity and air inlet and outlet valve formed by same
CN210978703U (en) * 2019-11-11 2020-07-10 奎屯耐特阀门科技有限公司 Air inlet and exhaust valve floating ball and air inlet and exhaust valve formed by same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR752940A (en) * 1932-07-11 1933-10-03 liquid elevator for supplying fuel to automobile engines, etc.
JP2002195201A (en) * 2000-12-26 2002-07-10 Keisuke Tsutsumi Ball accumulator
CN101004221A (en) * 2006-01-16 2007-07-25 高原 Floating ball self force type control valve
CN202109081U (en) * 2011-06-21 2012-01-11 芜湖市金贸流体科技股份有限公司 Ball valve
CN203757059U (en) * 2014-03-21 2014-08-06 天津瑞实联精密铸造有限公司 Hydraulic double-opening vent valve
CN110715104A (en) * 2019-10-11 2020-01-21 奎屯耐特阀门科技有限公司 Air inlet and outlet valve liner cavity and air inlet and outlet valve formed by same
CN210978703U (en) * 2019-11-11 2020-07-10 奎屯耐特阀门科技有限公司 Air inlet and exhaust valve floating ball and air inlet and exhaust valve formed by same

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