JPS6060386A - Poppet valve - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to valves, particularly valve sea I-operated valves.

BACKGROUND OF THE INVENTION One form of fluid flow control valve is a poppet.
) will sit against the valve seat and begin to close the valve. The poppet is provided with a through hole that is selectively closed by a pilot valve. The poppet is spring biased to a closed position, and fluid pressure acts on opposite sides of the poppet to maintain the poppet closed due to the spring bias. As the pilot valve rises from the valve seat, fluid pressure behind the poppet escapes into the through hole, fluid pressure acts upwardly against the poppet and moves it away from the valve seat, allowing fluid to flow through the valve. It flows.

In one embodiment, the valve is actuated by suitable solenoid means which actuates a plunger connected to the pilot valve to selectively position the pilot valve to effect the desired fluid flow control. There is.

Such valves are available in various sizes depending on the flow rate.

Both valves and solenoid operating means, e.g.
Cartridge-type valves of this type have also been provided in the prior art, including valves in the form of upper assemblies that can be connected to suitable port means by threaded adapters.

James E, Dav
U.S. Pat. No. 2,951,133, et al. discloses a metal member having a top end surrounded by an upright flange portion extending through the frontage of an upper cup-shaped housing portion. A hermetically sealed electrical contactor having a central opening is disclosed.

Arthur J.F.
U.S. Pat. No. 3,215,902 to U.S. Pat.
x plate) and the upper flux play i-, three elements are attached to the cylindrical projection of the core support and arranged such that the central holes of these elements are aligned. A solenoid actuation mechanism is disclosed.

George E.Barker
U.S. Pat. No. 3,446,473 (Ker) discloses a solenoid valve in which the solenoid housing is threadedly connected to the valve body.

Alfred G.A. Radleylag (81fredJ)
U.S. Pat. No. 3,593,241, issued to U.S. Pat. The magnetic flux path includes in part a magnetic flux path formed by a pair of magnetizable end group members disposed adjacent opposite end faces of the solenoid coil, with the magnetizable central leg forming an end plug. .

william ji
1. BarbiOr) et al. 14th edition 3,818,3
No. 98 Akira Inn: is made of iron material r1.
An electromagnetic coil assembly is disclosed in which a shaped tubular enclosure is press fit into each end of a spool that supports a solenoid coil.

1-One square-Tichi Engle (Thomas 11.
No. 4,074,700, the coil housing intersects the working air gap through the top of the plunger guide and the plunger, and through the pole piece, the coil support flange, and the coil housing. A valve assembly is disclosed that provides a magnetic flux return path that extends toroidally upwardly. ] The housing of the cylinder has a radial size that fits into the plunger, and the size of the axial surface is such that it can provide a large area in which the magnetic flux can move. 9- an axially extending lip having a diameter of 9-. The plunger guide is made as thin as possible to minimize magnetic losses.

(Problem to be Solved by the Invention) In the conventional valve of this scale, due to the dynamic fluid flow state near the outlet end of the hole of the pilot valve, the pressure acting on the rear side of the poppet member is reduced, and the pressure applied to the poppet member is reduced. It has the disadvantage that the pressure difference that acts on it becomes small.

The present invention has been made in view of the above-mentioned drawbacks of the prior art.

Therefore, an object of the present invention is to provide a valve that can significantly increase the flow rate of fluid and operates stably.

(Means for Solving the Problems) The first invention of the present application is a valve seat that is removably seated on an annular valve seat that opens at a discharge port, and one end of which is provided at the rear opposite to the discharge port. Open to the pressure space! ! A boppet 1 member having a through hole whose end opens to a discharge port;
means having an inlet formed adjacent to the poppet member to direct pressurized fluid to the outlet when the poppet member is separated from the valve seat; and a transfer passage leading from the inlet to the pressure space. This invention relates to a poppet valve having a pilot valve means for selectively opening and closing a through hole, the poppet valve having a pilot valve means for selectively opening and closing a through hole, the poppet valve having a pilot valve means for selectively opening and closing a through hole. Extension means are provided for allowing one end of the hole to extend substantially beyond the plane of the valve seat.

Further, in a second aspect of the present application, the extension means further includes a taper that decreases in diameter as it moves away from the poppet member and is located at the center of the outlet so as to minimize turbulence of the fluid flowing from the inlet through the extension member. An outer side surface is formed.

(Function of the Invention) The extension means of the present invention is arranged so that the through hole controlled by the pilot valve discharges substantially downstream of the valve seat 1 so that a pressure that is substantially the discharge pressure is generated in the through hole. This maximizes the pressure differential-based force that biases the poppet member into the open position.

Thus, the extension means of the present invention is effective in improving the function of the poppet valve, whether the poppet valve is a normally closed poppet valve or a normally open poppet valve.

In embodiments, the extension means may for example consist of an element secured to the poppet member by removable fastening means.

In embodiments, the extension means may comprise a nozzle tapered away from the poppet member.

In an embodiment, the outlet is formed by a widening peripheral wall, and the end of the through-hole of the poppet is extended by an extension means.
The tapered portion opens into a discharge port near the expanded end.

In an embodiment, the extension means extends coaxially with the annular valve seat.

In an embodiment, the extension means is provided with a tool-engaging circumferential surface for use in attaching and detaching the extension means as desired via the threaded portion.

In an embodiment, the extension means has a predetermined length such that it opens near the tapered partially expanded end of the spout when the poppet member is seated on the annular valve seat. When the valve is in the open position, the end of the extension element is located within the taper of the outlet.

In an embodiment, the extension means enable the outer end of the throughbore of the poppet member to reach a position substantially beyond the plane of the valve seat when the poppet member is separated from the annular valve seat. - Consists of an extension element attached to the poppet member. The extension element is provided with a slit to minimize turbulence in the fluid flowing from the inlet through the extension element.
A tapered portion is formed on the outer surface, the diameter of which decreases as it moves away from the poppet member, and is located at the center of the outlet.

In an embodiment, a recess is formed in the inner surface of the poppet member, and the extension element is screwed onto the poppet member in this recess.

13- (Example) Referring to the embodiment of the invention shown in the drawings, a poppet valve, generally designated by the reference numeral 10, has an annular valve seat 12 formed by a portion of a tubular valve body 13. Poppet member 1 arranged to be seated
It consists of a cartridge type valve with 1. The valve seat opens into the discharge port 14 . The poppet member has
A through hole 15 is formed whose one end 16 opens to the discharge port 14 through the poppet 1 through the four parts 17 of the front surface 18 of the member. The rear face 19 of the poppet member opens into the pressure space 20 . An inlet 21 is formed in the valve body 13 adjacent to the poppet member, and the inlet 21 is configured to direct pressurized fluid from the inlet to the discharge port 14 when the poppet member is separated from the valve seat 12. I have to. Poppet member 1
1 is provided with a passageway 22 for transferring pressurized fluid from an inlet 21 to a pressure space 20. Pilot valve means, indicated generally by the reference numeral 23, are provided to control the displacement of the poppet member 14-, the pilot valve means 23 being adapted to selectively open and close the throughbore 15. It has a pilot valve 24 located at 11. In the illustrated embodiment, the pilot valve 24 is operated by an IFJ valve whose rest is indicated by the reference numeral 25.
] means for selective positioning. That is, the actuating means 25 includes an electric coil 26 that selectively acts on the magnetic member 27 connected to the pilot valve 24, and the pilot valve 24 is positioned by excitation of the electromagnetic coil 26. There is.

In the embodiment of FIG. 2, the poppet 1-valve is separated from the normally closed poppet valve, and the seating portion 28 of the piping 1-valve 24 is connected to the magnetic member 27.
By urging the reaction element 29 connected to I downward, the end 16 of the through hole 15 is sealed.

Another embodiment of the invention is shown in FIG. 3, in which the valve is a normally open poppet l-valve, generally designated by the reference numeral 110, and a normally closed poppet valve 10.
The pilot valve 124 is biased by a spring 130 to push the poppet valve seat 128 into the through hole 11.
5 and is spaced apart from the end 116 of 5.

In the case of a normally closed valve 10, fluid pressure transferred to the pressure space 20 via the transfer passage 22 causes the poppet member to seat in the valve seat 12 when the pilot valve is closed as shown in FIG. so as to keep it in the same state as
Acting downwardly on the poppet member, the seat 28 seals off the end 16 of the through hole 15 . On the other hand, in the case of the normally open bobbet valve 110, the seating portions 128 of the pylon 1 to the valve 124 are spaced apart from the end portion 116 of the through hole 115, and the through hole 115 is opened, so that it is connected to the pressure space 120 via the transfer passage 122. The pressure of the fluid to be sent is released and the part tJ' 111 is normally connected to the valve seat 1.
12 , the poppet valve is held spaced apart from the valve seat or main seat 112 .

The present invention allows fluid to flow from inlet 2116- for normally closed valves and from inlet 121 to outlet 1 for normally open valves.
This solves the problem caused by the flow to /l and 11/l. In prior art valves in which the poppet member opens generally directly through its front face 18° 118, the front face 18, 1
Due to the pressure state near 18, the pressure transmitted to the pressure space 20.degree. 120 via the through hole 15.115 becomes somewhat greater than the pressure J: at the outlet on the downstream side of the valve. Therefore, less pressure differential-based force is utilized to move and hold the poppet valve open. in this way·
As the pressure differential becomes smaller, the capacity of the valve, which is designed to allow a given flow rate of fluid to flow through the valve, becomes undesirably restricted, and the forces created by the pressure differential can be used to cause unstable operation. It had been weakened to the point where it could cause damage.

The present invention obviates such drawbacks and in the embodiment shown in FIG. When separated, the end 16 of the through hole 15 of the poppet member 11 reaches a point substantially beyond the surface of the annular valve seat 1-12, thereby substantially increasing the flow rate of fluid flowing through a valve of the same size. It is something that increases.

In the illustrated embodiment, the extension means consist of an extension element 32 having a through hole 33, the through hole 33 being located at the end 3 of the element.
It has an inner end 34 that opens inwardly through 5.

The outer end 36 of the hole 33 opens into the end 16 of the through hole 15 in the poppet member.

The extension element has an outlet 1 on the front face 18 of the poppet member.
A threaded portion 37 is formed to be removably screwed into a threaded portion 38 of a recess 39 formed to open at the recess 39 . The extension element 32 is also formed with an enlarged diameter portion 40 arranged to abut the poppet member 11 when the threaded portion 37 is fully threaded into the threaded portion 38 of the poppet member 11. A tool engaging portion is formed on the circumferential surface 41 of the enlarged diameter portion 40 to be used when attaching and detaching the extension element 32 to and from the poppet member 11 via a screw as desired. .

As shown in FIG. 2, when the poppet member is in the closed position, that is, when the poppet member is seated on the valve seat 12, the distal end 35 of the extension element 32 extends from the valve seat 12. It comes to a position adjacent to the outer end of the widened portion 42 of the discharge port 14 extending apart from each other. Poppet member 11
When the valve is in the open position, the end portion 35 is located inside the widened portion 42 of the discharge outlet [114] which is spaced apart from the surface of the annular valve seat 120, as shown by the broken line in FIG. . Also, in the case of the normally open valve 110, as shown in FIG. 3, the end 135 of the extension element 132 is
As the poppet member 111 is attached to and removed from the valve seat 112, it assumes a position similar to that shown in FIG.

By providing the extension means 31.131, the end 16.116 of the through-bore is located downstream of the inlet to the valve opening 14, 114 formed by the valve seat 12. The function of the valve is significantly improved compared to the previous valve. As a result, the pressure at the ends 35, 135 of the extension elements 32, 132 becomes approximately the discharge pressure on the downstream side of the valve, increasing the pressure differential acting on the poppet member and opening the valve 10 more reliably. , a poppet member 11 in each valve 10 and 110.
．． It has been found that 111 can be held in the open state more reliably.

Further, the extension elements 32, 132 have a diameter that decreases as it moves away from the enlarged diameter portion 40, as shown in FIGS. 2 and 3, so that the fluid flows along the face of the extension element with less turbulence. A tapered outer surface 43, 143 is provided to provide a smoother flow transition near the end 35.135 and to reduce pressure space 20, 120 when the valve is in the open state. and entrances 21, 12
The pressure difference between 1 and 1 becomes large.

As shown in FIG. 2, the tapered outer surface portion 43 is
The enlarged diameter portion 40 of the extension element is received in the recess 39 so that it is arranged to extend from the face of the front face 18 of the poppet member.

20- (Effects) As mentioned above, with the provision of the extension means, the valve of the present invention is capable of handling significantly large volumetric flows of fluids, e.g. In the case of a valve, using the extension means 31° 131, it is possible to process approximately 2651 (70 gallons) of fluid per minute with equal stability. An excellent effect can be achieved in that the size of the valve to be used can be significantly and easily reduced in size.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a poppet valve according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view taken along line 2-2 in FIG. 1, and FIG. 3 is a normally open poppet valve according to another embodiment of the present invention. FIG. 10...Poppet valve, 11...Poppet member,
12... Valve seat, 13... Valve body, 14
...Discharge port, 15...Through hole, 17...Recessed part,
18... Front surface, 19... Rear surface, 20... Pressure space, 21... Inlet, 21-22... Transfer passage, 23... Pilot valve means, 24... Pilot valve, 25 ...operating means,
26... Electromagnetic coil, 27... Magnetic member, 28...
- Seating part, 29... reaction element, 31... extension means,
32... Extension element, 33... Through hole, 34... Inner end, 35... End, 36... Outer end, 37.
38... Threaded part, 39... Concave part, 40... Expanded diameter part, 41... Tool engagement surface, 42... Enlarged width part, 43...
...Outer surface with taper, 110...Poppet valve, 1
11...Poppet member, 112...Valve seat,
115... Through hole, 116... End, 118...
Inner surface, 120... Pressure space, 121... Inlet, 1
22... Transfer passage, 124... Pilot valve,
128... Seating portion, 131... Extension means, 132...
...Extension element, 135...End part, 143...Te--
Outer side with bar. 22-

Claims (1)

[Scope of Claims] (1) It is removably seated on an annular valve seat that opens at the discharge port, and one end opens into a pressure space provided at the rear on the opposite side of the discharge port, and the other end a poppet member having a through hole opening to the outlet; an inlet adjacent to the poppet member to direct pressurized fluid to the outlet when the poppet member is separated from the valve seat; In the poppet valve, the poppet valve is provided with means for forming a transfer passage from the inlet to the pressure space, and pylon 1 to valve 1 means for selectively opening and closing the through hole. A poppet valve characterized in that extension means is provided for extending the one end of the through hole of the poppet member to a position substantially beyond the surface of the annular valve seat when the poppet member is separated from the valve seat. (2) The poppet valve according to claim 1, wherein the extension means comprises a cord attached to the poppet member. (3) The poppet valve according to claim 1, wherein the extension means comprises a nozzle fixed to the poppet member. (4) The extension means comprises a nozzle fixed to the poppet member and tapered outwardly from the poppet member.
Poppet valves as described in section. (5) The poppet valve according to claim 1, wherein the extension means is removably fixed to the poppet member. (6) The poppet valve according to claim 1, wherein the extension means comprises an element screwed onto the poppet member. (7) The discharge port widens outward from the valve seat, and when the poppet member is seated on the valve seat, the one end of the through hole of the poppet member is opened by the extension means. The valve according to claim 1, wherein the valve opens into the discharge port in the vicinity of the expanded portion of the discharge port. (8) The first aspect of the present invention is characterized in that the extension means extends coaxially with the annular valve seat.
Poppet valves as described in section. (9) The valve is a normally closed valve, and is provided with biasing means that biases the pilot valve to close the through hole, and further forces the pilot valve against the action of the biasing means. 2. The poppet valve according to claim 1, wherein the actuating means for opening the through hole by vertically moving the through hole has four holes. (10) The valve is a normally open valve, and is provided with biasing means for biasing the pilot valve to open the through hole, and further forcing the pilot valve against the action of the biasing means. 2. The poppet valve according to claim 1, further comprising actuating means for opening the through hole by moving the poppet valve. (11) The extension means is comprised of an element screwed onto the poppet member, and furthermore, a shell engaging circular surface is formed for use in attaching and detaching the extension member. Poppet valves as described in section. (12) It is removably seated on an annular valve seat that opens at the discharge port, and one end opens into a pressure space provided at the rear on the opposite side from the discharge port, and the other end opens at the discharge port. an inlet is formed adjacent to the poppet member so as to guide pressurized fluid to the discharge port when the poppet member passes from the valve seat; In the poppet valve, the poppet valve includes a means for forming a pressure space from the inlet, a means for forming a transfer passage communicating from the inlet to a pressure space, and a pilot valve means for selectively opening and closing the n-hole. When separated from the annular valve seat, the one end of the through hole of the poppet member substantially covers the surface of the valve seat.
Extension means are provided on the poppet member for extending the extension beyond the inlet, the extension means extending from the poppet member to minimize turbulence of fluid flowing through the inlet and through the member. A poppet valve characterized in that a tapered outer surface portion is formed that decreases in diameter as it goes away and is located at the center of the outlet. (13) The discharge port widens outward from the valve seat, and when the poppet member is seated on the valve seat, the one end of the negative passage hole of the poppet member is extended by the extension means. 13. The poppet valve according to claim 12, wherein the poppet valve opens into the discharge port in the vicinity of the expanded portion of the discharge port. (1-4) The poppet valve according to claim 12, wherein the poppet member has an inner surface through which the extension means passes. (15) The poppet member has an inner surface formed with a recess that opens toward the discharge port, and the extension means extends from an extension element having a fixed portion fixed to the poppet member in the recess. The poppet valve according to claim 12, characterized in that: (16) The poppet member has an inner surface formed with a recess that opens toward the discharge port, and the extension means has an extension having a fixing portion screwed to the poppet member in the recess. 13. The poppet valve according to claim 12, characterized in that it consists of an element.