WO2017123028A1 - 역방향 유체 공급 기능을 갖는 체크밸브 - Google Patents
역방향 유체 공급 기능을 갖는 체크밸브 Download PDFInfo
- Publication number
- WO2017123028A1 WO2017123028A1 PCT/KR2017/000431 KR2017000431W WO2017123028A1 WO 2017123028 A1 WO2017123028 A1 WO 2017123028A1 KR 2017000431 W KR2017000431 W KR 2017000431W WO 2017123028 A1 WO2017123028 A1 WO 2017123028A1
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- WIPO (PCT)
- Prior art keywords
- disk
- valve body
- fluid
- inlet pipe
- shaft
- Prior art date
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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
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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
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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
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated 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
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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
- F16K31/44—Mechanical actuating means
-
- 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
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
Definitions
- the present invention relates to a check valve having a reverse fluid supply function, and more particularly, it is possible to supply a fluid in a reverse direction by arbitrarily opening a water passage formed in a central axis of a disk provided to open and close a fluid supply flow path.
- a check valve having a reverse fluid supply function For a check valve having a reverse fluid supply function.
- the valve refers to a device for controlling the flow rate, flow rate, pressure, etc. of the fluid flowing through the pipe, in particular, the check valve is used as a valve for flowing the fluid in only one direction and blocking the flow in the opposite direction. .
- FIG. 1 is a view schematically showing a conventional check valve.
- the conventional check valve is formed with an inlet 11 connected to the inlet pipe 50 through which the fluid is supplied, and an outlet 12 connected to the outlet pipe through which the fluid is discharged, and the inlet 11 and the outlet (
- a valve body 10 forming a space portion 13 in communication with 12
- a stem 20 having one side positioned outside the valve body 10 and the other side positioned inside the valve body 10.
- a disk 30 connected to the other side of the stem 20 to linearly move in both directions and opening or shielding the inlet 11, and between the disk 30 and the outlet 12 of the valve body 10. It may include a spring (40) inserted in to provide an elastic reaction force to the disk (30).
- the disk 30 may open the inlet 11 while the spring 40 is contracted so that the fluid may be introduced into the space 13.
- the disk 30 shields the inlet port 11 while expanding with the elastic reaction force of the spring 40, and the fluid of the space 13 is not allowed to enter the inlet port 11. Will not escape through).
- the fluid pressure refers to pressure by various fluids, including hydraulic pressure or hydraulic pressure.
- the check valve having a reverse fluid supply function according to the present invention aims to solve the above problems.
- Check valve having a reverse fluid supply function is the valve main body fluid is introduced into; A shaft installed in the valve body and moving forward to the inside of the valve body or to the outside of the valve body; A disk disposed inside the valve body to open and close the valve body; And a spring disposed between the disk and the inner surface of the valve body, wherein the disk opens the valve body by the fluid pressure of the fluid when the fluid pressure of the fluid is applied, and moves the shaft.
- the valve body is shielded, and when the fluid pressure of the fluid is removed, the valve body is shielded by the elastic reaction force of the spring.
- valve body is formed with an inlet connected to the inlet pipe for providing a flow path on one side, the inlet is formed on the other side, the inlet and the body portion is formed in the outlet perpendicular to the inlet; And a stopper shielding the entrance.
- valve body further includes a hollow nut member disposed to penetrate the center of the stopper portion and having a thread formed on an inner circumferential surface thereof, and the shaft is fitted with the nut member by a thread formed on an outer circumferential surface thereof.
- the end of the inlet pipe is located inside the valve body through the inlet, the disk opens and closes the end of the inlet pipe.
- valve body is provided with a strainer for filtering the foreign matter of the fluid between the inlet and the outlet.
- the disk is a metallic disk member having a through-hole in the center; And an elastic cover member formed to surround the outside of the disk member.
- the shaft is formed in the groove portion in which the outer diameter is reduced in a portion of the section located inside the inlet pipe, the disk is formed in the center of the channel passage through which the shaft is fitted.
- the inside of the inlet pipe is provided with a guide member for supporting one end of the shaft.
- the shaft is formed on the outer circumferential surface of the stopper protruding along the circumferential direction so as to press the disk in the opening direction of the inlet or inlet pipe.
- the groove portion is a pair of inclined section that the outer diameter is gradually reduced in symmetry with each other; And a horizontal section in which an outer diameter remains constant between the inclined sections.
- the disk is formed with a sealing member of the elastic material protruding toward the center in the circumferential direction in the water passage.
- the sealing member is formed on both sides of the water passage.
- the central axis is formed with a water passage in the inner side
- the discharge port is formed in communication with the water passage on one side
- the injection hole in communication with the water passage on the other side is Is formed
- the other side is fitted into the hollow so that the injection port is retractable
- the disk is fixed to the central axis integrally.
- the shaft is formed on the inner surface of the hollow sealing member of the elastic material protruding toward the center in the circumferential direction.
- the channel is in communication with the discharge port vertical portion formed in parallel with the longitudinal direction of the central axis; And a horizontal portion having one side communicating with the injection hole and the other side communicating with the vertical portion and formed parallel to the radial direction of the central axis.
- the check valve having a reverse fluid supply function according to the present invention can be forcibly shielded to be opened by the fluid pressure or the inlet in which the fluid is introduced, or is not opened even when the fluid pressure is applied, and is opened even when opened by the fluid pressure
- the degree can be adjusted and the fluid introduced into the check valve through the inlet pipe can be resupplied to the inlet pipe as needed.
- the shaft may be rotated through the handle, and the inlet in which the fluid is introduced may be opened by the fluid pressure only by the rotation direction or the degree of rotation of the shaft, or may be forcibly shielded from being opened even if the fluid pressure is applied. It is possible to control the degree of opening even though it is opened by the door, and it is possible to control all the operations that can resupply the fluid introduced into the check valve from the inlet pipe to the inlet pipe as needed. have.
- FIG. 1 is a view schematically showing a conventional check valve.
- FIG. 2 is a cross-sectional view showing a state in which a check valve having a reverse fluid supply function according to a first embodiment of the present invention is shielded.
- FIG 3 is a cross-sectional view showing an open state of a check valve having a reverse fluid supply function according to a first embodiment of the present invention.
- FIG. 4 is a cross-sectional view showing a state in which a check valve having a reverse fluid supply function according to a first embodiment of the present invention is forcibly shielded.
- FIG. 5 is a cross-sectional view illustrating a state in which a channel of a check valve having a reverse fluid supply function according to a first embodiment of the present invention is opened to supply fluid in a reverse direction.
- FIG. 6 is a cross-sectional view of a check valve having a reverse fluid supply function according to a second embodiment of the present invention.
- FIG. 7 is a cross-sectional view showing a fluid supply system provided with a check valve having a reverse fluid supply function according to a second embodiment of the present invention.
- FIG. 8 is a cross-sectional view showing a state in which a check valve having a reverse fluid supply function according to a third embodiment of the present invention is shielded.
- FIG. 9 is a cross-sectional view showing an open state of a check valve having a reverse fluid supply function according to a third embodiment of the present invention.
- FIG. 10 is a cross-sectional view showing a state in which a check valve having a reverse fluid supply function according to a third embodiment of the present invention is forcibly shielded.
- FIG. 11 is a cross-sectional view illustrating a state in which a channel of a check valve having a reverse fluid supply function according to a third embodiment of the present invention is opened to supply fluid in a reverse direction.
- FIG. 12 is a perspective view of the central axis and the disk taken from FIG. 8; FIG.
- FIG. 13 is a sectional view of a check valve having a reverse fluid supply function according to a fourth embodiment of the present invention.
- FIG. 14 is a cross-sectional view showing a fluid supply system provided with a check valve having a reverse fluid supply function according to a third embodiment of the present invention.
- FIG. 2 is a cross-sectional view showing a state in which a check valve having a reverse fluid supply function according to a first embodiment of the present invention is shielded
- FIG. 3 is a check valve having a reverse fluid supply function according to a first embodiment of the present invention. Sectional view showing an open state.
- the fluid pressure referred to in the description is known in advance that the pressure by various fluids, including hydraulic pressure or water pressure.
- a check valve having a reverse fluid supply function includes a valve body 100, a shaft 200, a disk 300, and a spring 400. It includes.
- the valve body 100 has an inlet port 111 connected to the inlet pipe 500 for providing a flow path 510 to which the fluid is transferred, and a space part in which the fluid supplied into the interior through the inlet pipe 500 stays. 112 and a discharge port 113 through which the fluid supplied to the space 112 escapes to the outside.
- the valve body 100 serves as a housing of the valve, the inlet 111 and the outlet 113 may be formed in a straight line facing each other, the inlet 111 and outlet 113 are perpendicular to each other. It may be formed of a 'T' shape or 'b' shape arranged to be, and may be configured in various other types. In addition, a flange 115 may be formed on an outer circumferential surface of the inlet 111 or the outlet 113.
- the inlet 111 is connected to the inlet pipe 500
- the outlet 113 is connected to the discharge pipe.
- the inlet 111 and the inlet pipe 500, the outlet 113 and the discharge pipe can be connected to the bolt fastening by forming a flange 115 in contact with each other, by forming a protrusion or groove at the end in contact with each other ring joint or It may be connected via a fastening means such as a groove joint.
- valve body 100 as described above may be installed on the bottom surface (1), the height adjusting means 600 for adjusting the separation distance of the bottom surface 1 and the valve body 100 is the valve body 100 It may be provided separately on the outside of the.
- valve body 100 may discharge the fluid contained in the valve body 100 to the outside in an emergency, or may form an emergency exit that can be supplied with fluid from the outside.
- the emergency exit is normally shielded with a stopper, and can be opened only in an emergency.
- One end of the shaft 200 is located inside the inlet pipe 500, and the other end is located outside the valve body 100 to be connected to the handle 220.
- the shaft 200 is located inside the inlet pipe 500. In some sections, the groove portion 210 having the outer diameter is reduced.
- one end of the shaft 200 is positioned inside the inlet pipe 500, and the other end of the shaft 200 passes through the valve body 100 and is located outside the valve body 100.
- a handle 220 for rotating the shaft 200 is mounted at an end portion of the shaft 200 located outside the valve body 100.
- the handle 220 is disposed outside the valve body 100, an operator may operate the handle 220 outside the valve body 100. For example, when the handle 220 is rotated clockwise (or counterclockwise), the shaft 200 may be advanced to the inside of the valve body 100 and the handle 220 may be counterclockwise (or clockwise). The shaft 200 may be retracted to the outside of the valve body 100 when rotated by.
- the shaft 200 is formed with a groove 210 having a reduced outer diameter in a portion of the inlet pipe 500.
- the groove 210 may have a shape in which a groove concave inward extends in the circumferential direction.
- the disk 300 has a channel through which the shaft 200 is fitted is formed at a central portion thereof, and is inserted into the shaft 200 to move in both directions, thereby opening the opening 520 of the inlet 111 or the inlet pipe 500. Open and close.
- the disk 300 is formed in the form of a disc, the shaft 200 is guided in the direction of the opening 520 of the inlet 111 or the inlet pipe 500 to guide the inlet 111 or inlet pipe 500
- the opening 520 may be shielded or moved toward the handle 220 to open the opening 520 of the inlet 111 or the inlet pipe 500.
- the opening 520 of the inlet 111 or the inlet pipe 500 is opened, the fluid transferred to the inlet pipe 500 may flow into the valve body 100, and the inlet 111 or the inlet pipe 500 may be When the opening 520 is shielded, the fluid transferred to the inlet pipe 500 may not flow into the valve body 100, and the fluid of the valve body 100 may not escape to the inlet pipe 500.
- the end of the inlet pipe 500 is located in the valve body 100 through the inlet 111, the disk 300 may open and close the end of the inlet pipe 500.
- the disk 300 is specified to open and close the inlet 111 or the opening 520 of the inlet pipe 500, the end of the inlet pipe 500 through the inlet 111
- the disk 300 may open and close the opening 520 formed at the end of the inlet pipe 500.
- Spring 400 may be provided as a compression spring (compression spring), it is disposed between the disk 300 and the inner surface of the valve body 100 to provide an elastic reaction force to the disk (300). More specifically, the spring 400 provides a pressing force for pushing the disk 300 in the direction of the opening 520 of the inlet 111 or the inlet pipe 500. In this case, the shaft 200 is disposed to penetrate the inside of the spring 400.
- compression spring compression spring
- the check valve configured as described above may allow the disk 300 to shield the opening 520 of the inlet 111 or the inlet pipe 500 by the pressing force of the spring 400.
- the spring 400 contracts due to the fluid pressure of the fluid supplied to the inlet pipe 500, the disc 300 moves in the direction of the handle 220 and the opening 520 of the inlet 111 or the inlet pipe 500. ) May be opened.
- the disk 300 when the fluid is not transferred to the inlet pipe 500 or the amount of the fluid is small, the disk 300 blocking the opening 520 of the inlet pipe 500 by the pressing force of the spring 400. ), The disk 300 may continuously shield the opening 520 of the inlet pipe 500 because no fluid pressure is generated to push the N) toward the handle 220. In addition, in the state where the fluid is filled in the valve body 100, the disk 300 is forced to maintain a state in which the opening 520 of the inlet pipe 500 is shielded by the fluid pressure.
- the spring 400 is caused by the fluid pressure. Is contracted and the disk 300 which is blocking the opening 520 of the inlet pipe 500 moves in the direction of the handle 220, while the opening 520 of the inlet pipe 500 is opened and transferred to the inlet pipe 500.
- the fluid may be introduced into the valve body 100.
- FIG. 5 is a cross-sectional view illustrating a state in which a channel of a check valve having a reverse fluid supply function according to a first embodiment of the present invention is opened to supply fluid in a reverse direction.
- the outer diameter of the shaft 200 is preferably formed to be the same as the diameter of the water passage 310 formed in the disk 300, the shaft of the shaft 200 so that the movement of the disk 300 fitted to the shaft 200 is made smoothly
- the outer diameter may be formed slightly smaller than the diameter of the disk 300.
- the outer diameter of the groove 210 should be formed to be smaller than the diameter of the water passage 310 of the disk 300. This is to secure a space for the fluid to escape between the groove 210 and the channel 310 when the groove 210 is located in the channel 310 of the disk 300.
- the handle 220 is opened.
- the groove 210 is positioned in the water passage 310, and the valve body 100 is disposed through the space formed between the groove 210 and the water passage 310.
- the fluid filled in may be supplied to the inlet pipe 500 again.
- the groove portion 210 may include a pair of inclined sections 211 and 212 whose outer diameters are gradually reduced in symmetry with each other, and a horizontal section 213 in which the outer diameter is kept constant between the inclined sections 211 and 212. Can be.
- the stepped portion passing through the groove 210 formed at the boundary of the groove 210 in the process of exiting the groove 210 out of the channel 310 is located in the channel 310. It may be caught in the corner portion of the furnace 310, the forward or backward of the shaft 200 may be disturbed.
- the groove 210 enters the water passage 310 or the groove 210 located in the water passage 310 is the water passage.
- the entrance and exit operation exiting 310 may proceed smoothly along the inclined sections 211 and 212.
- valve body 100 the inlet 111 is formed on one side, the inlet 114 on the other side facing the inlet 111, and the inlet 111 and the outlet 114 perpendicular to the
- the outlet portion 113 is formed in the direction, but the inlet 111, the entrance 114, the body portion 110 of the T-shaped to form a space portion 112 in communication with the outlet 113 And, it may include a stopper 120 for shielding the entrance 114 of the body portion 110.
- the spring 400 is sandwiched between the disk 300 and the inner surface of the stopper 120 disposed to face the disk 300.
- the shaft 200 may move forward or backward, and the disk 300 may also move in both directions parallel to the shaft 200 in both directions.
- the opening 520 or the inlet 111 of the 500 may be opened or closed.
- the fluid of the inlet pipe 500 may exit the outlet 113 located vertically upward or vertically downward through the valve body 100 and be supplied to the discharge pipe. .
- valve body 100 further includes a hollow nut member 130 disposed to penetrate the center of the stopper 120 and having a thread 131 formed on an inner circumferential surface thereof, and the shaft 200 has an outer circumferential surface. Thread 201 is formed in the nut member 130 can be linearly moved in both directions while rotating.
- one end of the nut member 130 may be located inside the valve body 100, and the other end may be located outside the valve body 100, and the nut member 130 and the stopper 120 may be welded. Can be connected in a manner.
- a sealing member 140 may be formed between the nut member 130 and the shaft 200 to block the flow of the fluid.
- the shaft 200 inserted into the nut member 130 may move forward or backward.
- the nut member 130 is not rotated because it is fixed to the stopper 120, and only the shaft 200 rotates forward or backward in accordance with the rotation direction.
- a hollow guide member 530 supporting one end of the shaft 200 may be provided inside the inlet pipe 500.
- the shaft 200 penetrates through the hollow guide member 530 and moves forward and backward in a state of being fitted to the guide member 530. Therefore, both ends of the shaft 200 are supported by the guide member 530 and the valve body 100, respectively, and can be maintained in a horizontal state without being inclined to one side.
- FIG. 4 is a cross-sectional view showing a state in which a check valve having a reverse fluid supply function according to a first embodiment of the present invention is forcibly shielded.
- the shaft 200 includes a stopper 230 protruding along the circumferential direction to press the disc 300 toward the opening 520 of the inlet 111 or the inlet pipe 500. It may be formed on the outer peripheral surface.
- the stopper 230 is fixed to the shaft 200, and rotates with the shaft 200 and moves in both directions along the shaft 200, the disk 300 is the opening of the inlet 111 or the inlet pipe 500 Providing a pressing force for bringing the disk 300 into close contact with the opening 520 of the inlet 111 or the inlet pipe 500 to forcibly shield the 520.
- the disk 300 opens the opening 520 of the inlet 111 or the inlet pipe 500.
- the disk 300 does not move because the stopper 230 is forcibly pressing the disk 300, and the inlet 111 ) Or the opening 520 of the inlet pipe 500 may be shielded.
- the opening degree of the disk 300 and the flow rate of the fluid flowing into the valve body 100 can be adjusted by the configuration of the stopper 230. Since the stopper 230 moves in both directions along the shaft 200 while rotating together with the shaft 200, the stopper 230 may be adjusted from the disk 300. Therefore, when the distance between the stopper 230 and the disk 300 is reduced, the movement distance of the disk 300 is limited to be short, and the fluid is transferred to the inlet pipe 500 so that the fluid pressure is transferred to the disk 300. When applied, the disk 300 may be opened only by a limited distance so that the flow rate of the fluid flowing into the valve body 100 may be adjusted.
- the moving distance of the disk 300 is inevitably lengthened, and the fluid is transferred to the inlet pipe 500 so that the fluid pressure is applied to the disk 300.
- the disk 300 is opened only by a lengthened distance, so that the flow rate of the fluid flowing into the valve body 100 may be relatively increased.
- the disk 300, the sealing member 320 of the elastic material protruding toward the center in the circumferential direction may be formed in the water passage (310).
- the sealing member 320 is made of a material such as rubber, and is provided to shield a gap therebetween so that fluid does not escape between the water passage 310 and the shaft 200.
- the inner diameter of the sealing member 320 may be larger than the outer diameter of the groove 210.
- the flow passage 310 and the shaft 200 may be completely shielded by the sealing member 320 to block the flow of the fluid.
- the inner diameter of the sealing member 320 is larger than the outer diameter of the groove 210, when the groove 210 is located in the water passage 310, the water passage 310 and the sealing member 320 and the groove portion ( Gaps may occur between the 210 and fluid may escape therebetween.
- the disk 300 includes a disk member 330 of a metallic material having a through-hole in the center and an elastic cover member 340 formed to surround the outside of the disk member 330,
- the sealing member 320 may be integrally formed with the cover member 340.
- the disk member 330 is for reinforcing the disk 300 and is made of a metallic material.
- the cover member 340 is formed of an elastic material such as rubber to cover the outside of the disk member 330.
- the disk member 330 and the cover member 340 may be integrally formed by an insert injection method.
- the through hole of the disk member 330 may act as a water passage 310, the cover member 340 formed on the outside of the through hole may be formed by extending in a circumferential direction protruding toward the center, the protrusion It may act as the sealing member 320.
- the sealing member 320 may be formed on both sides of the water passage 310, respectively. Therefore, even if a gap occurs between any one of the sealing member 320 and the shaft 200 while being inclined to one side in the state in which the shaft 200 is fitted in the water passage 310, the other sealing member 320 As a result, the water passage 310 and the shaft 200 may be stably shielded.
- FIG. 6 is a cross-sectional view of a check valve having a reverse fluid supply function according to a second embodiment of the present invention.
- valve body 100 is introduced between the inlet 111 and the outlet 113 to the inlet 111, and strainers 700 for filtering the foreign substances of the fluid exiting to the outlet 113. Can be formed.
- the strainer may be provided as a mesh in which a plurality of filtration holes are formed, and may be formed in the inlet 111 or the outlet 113 or the opening 520 of the inlet pipe 500.
- the strainer 700 may be formed in the shape of a hollow tube, and a plurality of filtration holes 710 may be formed at a side surface thereof.
- the strainer 700 is disposed in parallel with the shaft 200, and can accommodate the shaft 200 and the disk 300 therein, the opening 520 of the inlet pipe 500 is also strainer 700 It may be located inside. Therefore, the fluid introduced through the opening 520 of the inflow pipe 500 may be discharged to the discharge port 113 after the foreign matter is filtered by the stator 700.
- FIG. 7 is a cross-sectional view showing a fluid supply system provided with a check valve having a reverse fluid supply function according to a first embodiment of the present invention.
- the handle 220 is rotated to bring the stopper 230 into close contact with the disc 300.
- the stopper 230 is in close contact with the disk 300, even if the fluid is transferred through the inlet pipe 500 and the fluid pressure is applied to the disk 300, the disk 300 is supported by the stopper 230 to support the disk 300. ) May be forcibly shielded from the opening 520 of the inlet pipe 500 without opening.
- the handle 220 to adjust the distance between the disk 300 and the stopper 230 as desired.
- the distance between the disk 300 and the stopper 230 is adjusted, since the opening degree of the disk 300 is adjusted, the flow rate of the fluid flowing into the valve body 100 from the inlet pipe 500 can be adjusted.
- FIG. 8 is a cross-sectional view showing a state in which a check valve having a reverse fluid supply function according to a third embodiment of the present invention is shielded
- FIG. 9 is a check valve having a reverse fluid supply function according to a third embodiment of the present invention. Sectional view showing an open state.
- a check valve having a reverse fluid supply function includes a valve body 1100, a shaft 1200, a central axis 1310, and a disk 1320. ) And a spring 1400.
- the valve body 1100 has an inlet 1111 connected to an inlet pipe 1500 that provides a flow path 1510 through which the fluid is transferred, and a space portion in which the fluid supplied into the inside of the inlet pipe 1500 stays. 1112 and a discharge port 1113 through which the fluid supplied to the space 1112 exits to the outside.
- the valve body 1100 serves as a housing of the valve, the inlet 1111 and the outlet 1113 may be formed in a straight line facing each other, the inlet 1111 and the outlet 1113 are perpendicular to each other It may be formed of a 'T' shape or 'b' shape arranged to be, and may be configured in various other types. In addition, the inlet 1111 or the outlet 1113 may be formed with a flange 1115 on the outer peripheral surface.
- the inlet pipe (1111) is connected to the inlet pipe 1500
- the discharge port 1113 is connected to the discharge pipe.
- the inlet 1111 and the inlet pipe 1500, the outlet 1113 and the discharge pipe can be connected by bolt fastening by forming a flange (1115) in contact with each other, by forming a protrusion or groove at the end in contact with each other ring joint or It may be connected via a fastening means such as a groove joint.
- valve body 1100 as described above may be installed on the bottom surface 1, the height adjusting means 1600 for adjusting the separation distance of the bottom surface 1 and the valve body 1100 is the valve body 1100 It may be provided separately on the outside of the.
- valve body 1100 may discharge the fluid contained in the valve body 1100 to the outside in an emergency, or may form an emergency exit that can be supplied with fluid from the outside.
- the emergency exit is normally shielded with a stopper, and can be opened only in an emergency.
- the shaft 1200 is one end is located inside the valve body 1100, the other end is located outside the valve body 1100 is connected to the handle 1220, the inside of the valve body 1100 Hollow 1210 is formed on one side.
- one end of the shaft 1200 is positioned inside the valve body 1100, and the other end of the shaft 1200 penetrates the valve body 1100 and is located outside the valve body 1100.
- a handle 1220 for rotating the shaft 1200 is mounted at an end of the shaft 1200 positioned outside the valve body 1100.
- the handle 1220 is disposed outside the valve body 1100, an operator may operate the handle 1220 outside the valve body 1100. For example, when the handle 1220 is rotated clockwise (or counterclockwise), the shaft 1200 may move forward of the valve body 1100 and the handle 1220 may be counterclockwise (or clockwise). The shaft 200 may be retracted to the outside of the valve body 1100 when rotated by.
- the shaft 1200 has a hollow 1210 formed on one side of the valve body 1100.
- the hollow 1210 may be concave inward from one end surface of the shaft 1200 to be parallel to the longitudinal direction of the shaft 1200, and the hollow 1210 and the outside may be formed at one end surface of the shaft 1200.
- An opening in communication is formed.
- the central shaft 1310 has a water passage 1311 formed in parallel with the longitudinal direction on the inner side, and forms a discharge port 1312 communicating with the water passage 1311 and the outside at one end thereof, and the water passage at the other side.
- An injection hole 1313 communicating with the outside 1313 is formed.
- the central axis 1310 is fitted to the other side formed with the injection hole 1313 so that the hollow 1210 of the shaft 1200 can be projected.
- One end of the central axis 1310 is disposed on one side of the disk 1320, and the other end of the central axis 1310 is disposed on the other side of the disk 1320.
- the other side of the central axis 1310 may be inserted into the hollow 1210 of the shaft 1200 to linearly move in both directions while the injection port 1313 may be in and out of the shaft 1200.
- one end of the central shaft 1310 in which the discharge port 1312 is formed is located inside the inlet pipe 1500.
- the injection hole 1313 is shielded from the shaft 1200, and fluid may not be injected into the injection hole 1313.
- the injection hole 1313 is located outside the shaft 1200, the fluid is injected into the injection hole 1313 while the injection hole 1313 is opened, and the fluid may be discharged to the discharge hole 1312 through the water passage 1311. have.
- the fluid discharged to the discharge port 1312 may be supplied to the inlet pipe 1500.
- FIG. 12 is a perspective view of the central axis and the disk taken from FIG. 8; FIG.
- the water passage 1311 has a horizontal portion 1311b formed at one side thereof in communication with the discharge port 1312 in the axial direction of the central axis 1310, and one side at the injection hole 1313.
- the other side may include a vertical portion 1311a communicating with the horizontal portion 1311b and formed in the radial direction of the central axis 1310.
- the water passage 1311 has a shape bent in letter 'A' so as to communicate with the discharge port 1312 formed on one end surface of the central axis 1310, and the injection hole 1313 formed on the other side of the central axis 1310. Can be taken.
- the disk 1320 is integrally fixed to one side of the central axis 1310 and moves forward and backward with the central axis 1310 to open and close the opening 1520 of the inlet 1111 or the inlet pipe 1500. .
- the disk 1320 is formed in the shape of a disc, and the opening of the inlet 1111 or the inlet pipe 1500 is guided by the shaft 1200 together with the central axis 1310 fixed integrally to the center thereof.
- the opening 1520 of the inlet 1111 or the inlet pipe 1500 is opened, the fluid transferred to the inlet pipe 1500 may flow into the valve body 1100, and the inlet 1111 or the inlet pipe 1500 of the inlet pipe 1500 may be opened.
- the opening 1520 is shielded, the fluid transferred to the inlet pipe 1500 may not flow into the valve body 1100, and the fluid of the valve body 1100 may not escape to the inlet pipe 1500.
- an end of the inlet pipe 1500 may be located inside the valve body 1100 through the inlet 1111, and the disk 1320 may open and close an end of the inlet pipe 1500.
- the disk 1320 is specified to open and close the inlet 1111 or the opening 1520 of the inlet pipe 1500, but the end of the inlet pipe 1500 through the inlet 1111 When positioned inside the valve body 1100, the disk 1320 may open and close the opening 1520 formed at the end of the inlet pipe 1500.
- the spring 1400 may be provided as a compression spring and disposed between the disk 1320 and the inner surface of the valve body 1100 to provide an elastic reaction force to the disk 1320. More specifically, the spring 1400 provides a pressing force for pushing the disk 1320 toward the opening 1520 of the inlet 1111 or the inlet pipe 1500. In this case, the shaft 1200 and the central axis 1310 are disposed to penetrate the inside of the spring 1400.
- the check valve configured as described above may allow the disk 1320 to shield the opening 1520 of the inlet 1111 or the inlet pipe 1500 by the pressing force of the spring 1400.
- the spring 1400 contracts due to the fluid pressure of the fluid supplied to the inlet pipe 1500, the disk 1320 moves in the direction of the handle 1220 and the opening 1520 of the inlet 1111 or the inlet pipe 1500. ) May be opened.
- the disk 1320 when the fluid is not transferred to the inlet pipe 1500 or the amount of the fluid is small, the disk 1320 is blocking the opening 1520 of the inlet pipe 1500 by the pressing force of the spring 1400. ), The disk 1320 may continuously shield the opening 1520 of the inlet pipe 1500, because no fluid pressure is generated to push the ⁇ toward the handle 1220. In addition, in the state where the fluid is filled in the valve body 1100, the disk 1320 is forced to maintain a state in which the opening 1520 of the inlet pipe 1500 is shielded by the fluid pressure.
- the spring 1400 is caused by the fluid pressure. Is contracted and the disk 1320, which is blocking the opening 1520 of the inlet pipe 1500, moves toward the handle 1220, while the opening 1520 of the inlet pipe 1500 opens and is transferred to the inlet pipe 1500.
- the fluid may be introduced into the valve body 1100.
- FIG. 10 is a cross-sectional view showing a state in which a check valve having a reverse fluid supply function according to a third embodiment of the present invention is forcibly shielded.
- the shaft 1200 may press the disk 1320 toward the opening 1520 of the inlet 1111 or the inlet pipe 1500.
- the shaft 1200 moves forward or backward toward the disk 1320, while the disk 1320 forces the disk 1320 to inletly shield the opening 1520 of the inlet 1111 or the inlet pipe 1500. Or an urging force in close contact with the opening 1520 of the inlet pipe 1500.
- the disk 1320 is positioned by rotating the shaft 1200 so that one end surface of the shaft 1200 is in contact with the disk 1320 or the joint member 1330 connecting the disk 1320 and the central axis 1310.
- the disk 1320 may be fixed in a state of being in close contact with the opening 1520 of the inlet 1111 or the inlet pipe 1500.
- the disk 1320 does not move because one end surface of the shaft 1200 is forcibly pressing the disk 1320.
- the inlet 1111 or the opening 1520 of the inlet pipe 1500 may be shielded.
- the opening degree of the disk 1320 and the flow rate of the fluid flowing into the valve body 1100 may be adjusted by the shaft 1200. Since the shaft 1200 moves forward or backward toward the disk 1320, a distance from the disk 1320 may be adjusted. Therefore, when the distance between the end surface of the shaft 1200 and the disk 1320 facing the disk 1320 is reduced, the movement distance of the disk 1320 can be limited to a short, and fluid flows into the inlet pipe 1500. When the fluid pressure is transferred to the disk 1320, the disk 1320 may be opened only by a limited distance so that the flow rate of the fluid flowing into the valve body 1100 may be adjusted.
- one end of the shaft 1200 may be forced to shield the disk 1320 or limit the opening of the disk 1320 while contacting the disk 1320.
- the surface does not contact the disk 1320, and the inner surface of the hollow 1210 formed in the shaft 1200 presses the end portion of the central shaft 1310 inserted into the hollow 1210, thereby forcing the disk 1320. It may be shielded or limit the opening degree of the disk 1320.
- FIG. 11 is a cross-sectional view illustrating a state in which a channel of a check valve having a reverse fluid supply function according to a third embodiment of the present invention is opened to supply fluid in a reverse direction.
- the handle 1200 is opened.
- the shaft 1200 is rotated to one side in the direction of the handle 1220, the injection hole 1313 is exposed to the outside of the shaft 1200, and the fluid of the valve body 1100 introduced into the injection hole 1313 passes through the water passage 1311. And it can be supplied back to the inlet pipe 1500 through the discharge port (1312).
- the handle 1220 is rotated to the other side to adjust the inlet 1313 to be received into the shaft 1200.
- the injection hole 1313 is received inside the shaft 1200, the injection hole 1313 is shielded again, and the fluid does not escape through the water passage 1311.
- valve body 1100 the inlet 1111 is formed on one side, the inlet 1114 on the other side, the inlet 1111 and the outlet 1113 in the direction perpendicular to the inlet 1114.
- the spring 1400 is sandwiched between the disk 1320 and the inner surface of the stopper 1120 disposed to face the disk 1320.
- the shaft 1200 may move forward or backward, and the degree of opening of the disk 1320 may vary depending on the degree of forward or backward movement of the shaft 1200. Limited or forced shielding of disk 1320 may be made.
- the fluid of the inlet pipe 1500 may exit through the valve body 1100 to the outlet 1113 located vertically upward or vertically downward, and may be supplied to the discharge pipe. .
- valve body 1100 further includes a hollow nut member 1130 disposed to penetrate the center of the stopper 1120 and having a thread 1131 formed therein, and the shaft 1200 has an outer circumferential surface.
- a thread 1201 is formed in the nut member 1130 to be linearly moved in both directions while being rotated by being inserted into the nut member 1130.
- one end of the nut member 1130 may be located inside the valve body 1100, and the other end may be located outside the valve body 1100, and the nut member 1130 and the stopper 1120 may be welded. Can be connected in a manner.
- a sealing member 1140 may be formed between the nut member 1130 and the shaft 1200 to block the flow of the fluid.
- the shaft 1200 inserted into the nut member 1130 may move forward or backward.
- the nut member 1130 is fixed to the stopper 1120, the nut member 1130 does not rotate, but moves forward or backward in accordance with the rotation direction while rotating only the shaft 1200.
- the shaft 1200, the sealing member 1230 of the elastic material protruding toward the center in the circumferential direction on the inner surface of the hollow 1210 may be formed.
- the sealing member 1230 shields a gap therebetween such that the fluid does not flow between the hollow 1210 and the central shaft 1310 fitted to the hollow 1210.
- the inner diameter of the sealing member 1230 may be smaller than the outer diameter of the central axis 1310.
- the injection hole 1313 communicating with the water passage 1311 is located inside the hollow 1210 rather than the sealing member 1230, a gap between the hollow 1210 and the central axis 1310 may be formed in the sealing member 1230. It is completely shielded by the fluid can not flow into the inlet (1313).
- the injection port 1313 is located outside the hollow 1210 than the sealing member 1230, the fluid of the valve body 1100 is introduced through the injection port 1313 exposed to the outside, the water passage 1311 and It may exit to the inlet pipe 1500 through the discharge port 1312.
- the disk 1320 may include a disk member 1321 made of a metal having a through hole at the center thereof, and a cover member 1322 made of an elastic material formed to surround the outside of the disk member 1321.
- the disk member 1321 is for reinforcing the disk 1320 and is made of a metal material.
- the cover member 1322 is formed of an elastic material such as rubber to cover the outside of the disk member 1321.
- the disk member 1321 and the cover member 1322 may be integrally formed by an insert injection method.
- FIG. 13 is a sectional view of a check valve having a reverse fluid supply function according to a fourth embodiment of the present invention.
- valve body 1100 is introduced into the inlet 1111 between the inlet 1111 and the outlet 1113, and strains 1700 for filtering foreign substances of the fluid exiting the outlet 1113. Can be formed.
- the strainer 1700 may be provided as a mesh in which a plurality of filtration holes are formed, and may be formed in the inlet 1111 or the outlet 1113 or the opening 1520 of the inlet pipe 1500. .
- the strainer 1700 may be formed in the shape of a hollow tube, and a plurality of holes 710 may be formed at a side surface thereof.
- the strainer 1700 is disposed in parallel with the shaft 1200, and accommodates the shaft 1200, the central axis 1310 and the disk 1320 therein, and the opening of the inlet pipe 1500 1520 may also be located inside the strainer 1700. Therefore, the fluid introduced through the opening 1520 of the inlet pipe 1500 may be discharged to the discharge port 1113 after the foreign matter is filtered by the stator 1700.
- FIG. 14 is a cross-sectional view showing a fluid supply system provided with a check valve having a reverse fluid supply function according to a third embodiment of the present invention.
- the disk 1320 which is blocking the opening 1520 of the inlet pipe 1500 by the fluid pressure of the fluid transferred to the inlet pipe 1500.
- the fluid of the inlet pipe 1500 flows into the valve body 1100.
- the driving of the pump 2 is stopped and no fluid is transferred to the inlet pipe 1500
- the fluid pressure applied to the disk 1320 is removed, and the disk 1320 is driven by the elastic force of the spring 1400.
- the opening 1520 of the inlet pipe 1500 is again shielded.
- the disk 1320 shields the opening 1520 of the inlet pipe 1500
- the fluid of the valve body 1100 to re-supplied to the inlet pipe 1500 to drive the pump 2
- the handle 1220 in the forward direction
- the inlet port 1313 communicating with the water passage 1311 is exposed to the outside of the shaft 1200, and the fluid of the valve body 1100 is introduced into the fluid through the inlet 1313, the water passage 1311, and the discharge port 1312. 1500) to the side.
- the handle 1220 when forcibly shielding the opening 1520 of the inlet pipe 1500, the handle 1220 is rotated to bring one end surface of the shaft 1200 into close contact with the disk 1320.
- the disk 1320 is one end surface of the shaft 1200. Is supported by the disk 1320 can not be opened and forcibly shield the opening 1520 of the inlet pipe (1500).
- the opening of the inlet and the inlet pipe through which the fluid is introduced can be opened by the fluid pressure, or can be forcibly shielded so as not to open even when the fluid pressure is applied, and open even when opened by the fluid pressure. It is possible to adjust the degree, and there is an advantage that the fluid introduced into the valve body through the inlet pipe can be resupply to the inlet pipe as needed.
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- General Engineering & Computer Science (AREA)
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Abstract
Description
Claims (15)
- 내부로 유체가 유입되는 밸브본체;상기 밸브본체에 설치되고, 상기 밸브본체의 내측으로 전진하거나 상기 밸브본체의 외측으로 후진하는 샤프트;상기 밸브본체의 내부에 배치되어 상기 밸브본체를 개폐하는 디스크; 및상기 디스크와 상기 밸브본체의 내측면 사이에 배치된 스프링;을 포함하고,상기 디스크는유체의 유체압이 가해질 경우, 유체의 유체압에 의해 상기 밸브본체를 개방하고, 상기 샤프트의 이동에 의해 상기 밸브본체를 차폐하며,유체의 유체압이 제거될 경우, 상기 스프링의 탄성반력에 의해 상기 밸브본체를 차폐하는 것을 특징으로 하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 1항에 있어서,상기 밸브본체는일측에 유로를 제공하는 유입관과 연결된 유입구가 형성되고, 타측에 출입구가 형성되며, 상기 유입구 및 상기 출입구와 수직된 방향에 배출구가 형성된 몸체부; 및상기 출입구를 차폐하는 마개부;를 포함하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 2항에 있어서,상기 밸브본체는 상기 마개부의 중심을 관통하도록 배치되고 내주면에 나사산이 형성된 중공의 너트부재를 더 포함하고,상기 샤프트는 외주면에 나사산이 형성되어 상기 너트부재에 끼워진 것을 특징으로 하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 2항에 있어서,상기 유입관의 단부는 상기 유입구를 통해 상기 밸브본체의 내부에 위치하고,상기 디스크는 상기 유입관의 단부를 개폐하는 것을 특징으로 하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 2항에 있어서,상기 밸브본체는상기 유입구와 상기 배출구 사이에 유체의 이물질을 여과하는 스트레이너가 형성된 것을 특징으로 하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 1항에 있어서,상기 디스크는중심부에 통공을 갖는 금속재질의 디스크부재; 및상기 디스크부재의 외부를 감싸도록 형성되는 탄성재질의 커버부재;를 포함하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 2항에 있어서,상기 샤프트는 상기 유입관의 내부에 위치된 일부 구간에 외경이 감소되는 홈부가 형성되고,상기 디스크는 상기 샤프트가 끼워지는 통수로가 중심부에 형성된 것을 특징으로 하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 7항에 있어서,상기 유입관의 내부에는 상기 샤프트의 일단을 지지하는 가이드부재가 구비된 것을 특징으로 하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 7항에 있어서,상기 샤프트는 상기 디스크를 상기 유입구 또는 유입관의 개구 방향으로 가압하도록 원주방향을 따라 돌출 형태의 스토퍼가 외주면에 형성된 것을 특징으로 하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 7항에 있어서,상기 홈부는상호 대칭되게 외경이 점차적으로 감소되는 한 쌍의 경사구간; 및상기 경사구간 사이에 외경이 일정하게 유지되는 수평구간;을 포함하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 7항에 있어서,상기 디스크는상기 통수로에 원주방향을 따라 중심을 향해 돌출된 탄성재질의 실링부재가 형성된 것을 특징으로 하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 11항에 있어서,상기 실링부재는상기 통수로의 양측에 각각 형성되는 것을 특징으로 하는 역방향 유체 공급 기능을 갖는 체크밸브.
- 제 2항에 있어서,상기 샤프트에 형성된 중공에 삽입된 중심축을 더 포함하고,상기 중심축은내측에 통수로가 형성되고, 일측에 상기 통수로와 연통된 토출구가 형성되며, 타측에 상기 통수로와 연통된 주입구가 형성되되, 타측은 상기 주입구가 출몰 가능하게 상기 중공에 끼워지고,상기 디스크는상기 중심축에 일체로 고정된 것을 특징으로 하는 역방향 유체공급 기능을 갖는 체크밸브.
- 제 13항에 있어서,상기 샤프트는상기 중공의 내측면에 원주방향을 따라 중심을 향해 돌출된 탄성재질의 실링부재가 형성된 것을 특징으로 하는 역방향 유체공급 기능을 갖는 체크밸브.
- 제 13항에 있어서,상기 통수로는상기 토출구와 연통되어 상기 중심축의 길이방향과 나란하게 형성된 수직부; 및일측이 상기 주입구와 연통되고 타측이 상기 수직부와 연통되어 상기 중심축의 직경방향과 나란하게 형성된 수평부;를 포함하는 역방향 유체공급 기능을 갖는 체크밸브.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018556774A JP6648309B2 (ja) | 2016-01-14 | 2017-01-12 | 逆方向流体供給機能を有するチェックバルブ |
US16/069,966 US10612676B2 (en) | 2016-01-14 | 2017-01-12 | Check valve having reverse-direction fluid supply function |
CN201780006776.6A CN108474488B (zh) | 2016-01-14 | 2017-01-12 | 具有反向流体供给功能的止回阀 |
SA518392015A SA518392015B1 (ar) | 2016-01-14 | 2018-07-14 | صمام تحكم له وظيفة إمداد مائع فى إتجاه عكسى |
Applications Claiming Priority (8)
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KR20160004589 | 2016-01-14 | ||
KR10-2016-0004588 | 2016-01-14 | ||
KR10-2016-0004589 | 2016-01-14 | ||
KR20160004588 | 2016-01-14 | ||
KR10-2016-0021979 | 2016-02-24 | ||
KR1020160021979A KR101773794B1 (ko) | 2016-01-14 | 2016-02-24 | 역방향 유체 공급 기능을 갖는 체크밸브 |
KR10-2016-0021977 | 2016-02-24 | ||
KR1020160021977A KR101822138B1 (ko) | 2016-01-14 | 2016-02-24 | 역방향 유체 공급 기능을 갖는 체크밸브 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220228670A1 (en) * | 2019-06-28 | 2022-07-21 | Do Qoom, Corp, Ltd | Assemblable check valve |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6105609A (en) * | 1999-08-13 | 2000-08-22 | General Motors Corporation | Filtered check valve assembly |
US20030089869A1 (en) * | 2001-11-15 | 2003-05-15 | Hall Randy J. | Variable port valve plug |
KR100835860B1 (ko) * | 2007-09-12 | 2008-06-09 | 황선수 | 유량조절 테이퍼밸브 |
KR20090017788A (ko) * | 2007-08-16 | 2009-02-19 | 손형모 | 스토퍼가 구비된 체크밸브용 개폐구 |
US20120160346A1 (en) * | 2010-12-23 | 2012-06-28 | Curtiss-Wrigth Flow Control Corporation | Nozzle check valve |
-
2017
- 2017-01-12 WO PCT/KR2017/000431 patent/WO2017123028A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6105609A (en) * | 1999-08-13 | 2000-08-22 | General Motors Corporation | Filtered check valve assembly |
US20030089869A1 (en) * | 2001-11-15 | 2003-05-15 | Hall Randy J. | Variable port valve plug |
KR20090017788A (ko) * | 2007-08-16 | 2009-02-19 | 손형모 | 스토퍼가 구비된 체크밸브용 개폐구 |
KR100835860B1 (ko) * | 2007-09-12 | 2008-06-09 | 황선수 | 유량조절 테이퍼밸브 |
US20120160346A1 (en) * | 2010-12-23 | 2012-06-28 | Curtiss-Wrigth Flow Control Corporation | Nozzle check valve |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220228670A1 (en) * | 2019-06-28 | 2022-07-21 | Do Qoom, Corp, Ltd | Assemblable check valve |
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