KR20110110102A - Valve for universal utilization and several purposes - Google Patents

Abstract

The present invention is a general-purpose valve capable of regulating backflow, partial back pressure, pressure relief, and partial pressure relief functions according to the flow direction, in the case of low pressure, a relatively large flow rate may flow even though the valve is slightly open even at a low pressure difference. It is about. According to the present invention, the base portion 2 having one end portion having a complete cross-sectional area, an intermediate portion 3 connected to the base portion 2 and having a reduced cross-sectional area, and a flat portion 4 connected to the intermediate portion 3 at the other end portion thereof. In the general-purpose general purpose valve (1) made of a soft and flexible material, the flat part (4) is of a structure sintered, pressed or glued with the same material as the valve (1); The press rim 7 of sintering or pressing or bonded structure is connected to the flat portion 4 in an airtight structure at the edge thereof; When the circumferential length K of the basic portion and the length L of the intermediate portion 3 are L = 0.5 ... 6 (K / π); The length N of the pressrim 7 is provided with a general purpose multipurpose valve with N = 0.1 ... 2 (K / [pi]).

Description

VALVE FOR UNIVERSAL UTILIZATION AND SEVERAL PURPOSES

The present invention is a general-purpose valve capable of regulating backflow, partial back pressure, pressure relief, and partial pressure relief functions according to the flow direction, in the case of low pressure, a relatively large flow rate may flow even though the valve is slightly open even at a low pressure difference. It is about.

Various valves are used in daily life, and one-way pressure reducing valve, which is the most used one, allows fluid to flow between two spaces with a pressure difference, but when a pressure difference occurs, fluid flows from a high pressure space to a low pressure space. . The main function of the check valve is to flow in only one direction, specifically, to allow the flow of the low pressure space in the high pressure space and to prevent the reverse flow (backflow).

The problem with using a check valve is that a constant force is required to close the check valve, which is usually caused by the pressure of the backwashing fluid itself. On the other hand, the check valve may be closed by an external influence such as a spring or a magnet. Check valves are mainly used when the pressure difference is structurally large. Because of this, most check valves do not close quickly when the pressure difference is small, and do not prevent backflow quickly.

The valve introduced in the FR2,756,899 patent, issued December 6, 1998, is a one-way valve that takes less than one minute to close. The valve has an opening and closing mechanism consisting of an inlet pipe, an outlet, and two surfaces overlapping each other. The two surfaces are connected to each other along two connecting lines on the same plane. The opening and closing mechanism has two ends. The inlet pipe is connected to one end of the opening and closing mechanism. The other end of the opening and closing mechanism forms an outlet. In the open state in which the two surfaces are opened to form a channel to flow the fluid, the opening and closing mechanism is reduced in pressure from the inlet pipe toward the outlet, thereby changing to the closed state in which the two surfaces are hermetically sealed. Such opening and closing mechanisms are made of a flexible material, but are not strictly deformable materials. This connecting line can move on the plane. Opening or closing of the switchgear is basically carried out by opening or closing the connecting line.

The floating ball introduced in US Pat. No. 4,012,041 is a hollow body made of rubber or plastic, and a check valve passes through the skin. The check valve is made of soft rubber and has a pair of thin rims, which have a number of holes adjoining them, through which air enters the ball when the external pressure is higher. The nozzle of the hand pump can be aligned with the hole in the check valve and air can be introduced into the ball. If the rims of the check valves come into contact with each other by the internal pressure of the ball, the valve is closed to prevent air discharge. If you apply a check valve to a tennis ball with reduced internal pressure, the hand pump can fill the internal pressure like a new ball.

DE 77 11 341 Utility model introduces a small pump with a cylinder, which is mainly used for spraying liquids. The inlet and outlet of the pump are closed by a check valve with a bucket and the bucket is wedge shaped. Both inlets and outlets are drilled in the longitudinal direction, the bucket can be turned by spring force, and the bucket extension is embedded in the spray head. Both check valves are lip valves, with the ribs acute to one another to form a gap. The lips of one lip valve face the inside of the cylinder at the cylinder inlet, while the lips of the second lip valve face the hole in the bucket extension. A pressure lock occurs between the two lip valves.

The elastic check valve introduced by the patent application KR 2005-23666, published on March 10, 2005, is made of natural rubber or synthetic rubber and reinforced with metal cores. In addition, the fixing part is connected to the valve to waterproof. The body of the valve has a rimmed fixing portion, an elastic hole and a closing portion, the elastic hole and the closing portion forming an extension of the fixing portion.

The disadvantage of the devices described above is that they can be used mainly when the pressure difference is large. The structure that operates when the pressure difference is large cannot be effectively used when the pressure difference is small. In addition, it may only function as a pressure reducing valve in a closed state, and may not function as a check valve to prevent backflow in a slightly open state.

Current check valves are basically in the closed position using the elasticity of the material. In this case, when the valve is in the open position, there is a problem that the valve does not operate and the valve does not close when a backflow occurs.

The main purpose of the present invention is to provide a relatively large flow rate with the valve open slightly even at low pressure, even in the case of low pressure, a general purpose that can regulate the backflow, partial back pressure, pressure relief, partial pressure relief functions according to the flow direction To provide a multipurpose valve.

According to the present invention, the base portion 2 having one end portion having a complete cross-sectional area, an intermediate portion 3 connected to the base portion 2 and having a reduced cross-sectional area, and a flat portion 4 connected to the intermediate portion 3 at the other end portion thereof. In the general-purpose general purpose valve (1) made of a soft and flexible material, the flat part (4) is of a structure sintered, pressed or glued with the same material as the valve (1); The press rim 7 of sintering or pressing or bonded structure is connected to the flat portion 4 in an airtight structure at the edge thereof; When the circumferential length K of the basic portion and the length L of the intermediate portion 3 are L = 0.5 ... 6 (K / π); The length N of the pressrim 7 is provided with a general purpose multipurpose valve with N = 0.1 ... 2 (K / [pi]).

The cross-sectional shape of the basic portion 2 is circular, elliptical, triangular, square, hexagonal, octagonal or polygonal. The flat part 4 is closed or only partially open in the basic state of the valve 1.

In order to influence the closing of the valve 1, the magnetic plate 8 may be provided in the flat portion 4, or the metal powder or the magnetic powder may be mixed with the material of the flat portion 4. In addition, in order to influence the closing of the valve 1, the elastic elastic fibers 9 can be provided symmetrically or asymmetrically in the flat portion 4.

The material of the valve 1 is natural / artificial rubber, silicone rubber, or a fabric or paper impregnated or surface-treated, and the thickness of the material of the valve is V = 0.01 ... 0.2 (K / π). desirable. In addition, the material of the valve 1 may be porous fabric or paper, and the porosity for free discharge may be 2 ... 40%.

Meanwhile, a plurality of flow gaps 10 may be formed in the intermediate portion 1.

In addition, it is preferable that the valve 1 is partially open in the basic state, and the flow cross-sectional area A2 of the flat part 4 in the basic state is 1 ... 66% of the cross-sectional area A1 of the basic part 2. Do.

Moreover, when S is the width of the press rim 7, it is preferable that S = 0.04 ... 0.42 (K / (pi)).

In addition, a filter may be disposed at the inlet 5 or the outlet 6 of the valve.

In addition, the closing of the valve 1 may be adjusted by the change of the magnetic force.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a side view of the valve of the present invention in a closed state.
2 is a plan view of the valve of FIG.
3 is a front view of the valve of FIG. 1 viewed from an outlet side.
4 is a front view of the valve of FIG. 1 seen from the inlet side.
5 is a side view of the valve of FIG. 1 slightly open, FIG. 6 is a front view of the valve of FIG. 5 seen from the outlet side, and FIG. 7 is a front view of the valve of FIG. 5 seen from the inlet side.
FIG. 8 is a side view of the valve of FIG. 1 fully open, FIG. 9 is a front view of the valve of FIG. 8 seen from the inlet, and FIG. 10 is a front view of the valve of FIG. 8 seen from the outlet.
FIG. 11 is a side view of another valve of the present invention with the magnetic plate disposed on a flat portion, FIG. 12 is a plan view of the valve of FIG. 11, and FIG. 13 is a front view of the valve of FIG. 11 as seen from the outlet 6.
FIG. 14 is another embodiment of the valve of FIG. 11, which is a side view of the valve inflated with elastic fibers on a flat portion, FIG. 15 is a plan view of the valve of FIG. 14, and FIG. 16 is a view of the valve of FIG. 14 from the outlet 6. Front view.
FIG. 17 is a side view when the valve of FIG. 14 is in an open position, and FIG. 18 is a front view of the valve of FIG. 17 seen from an outlet side.
19 is a partial cross-sectional view of a closed state of another valve according to the present invention, and FIG. 20 is a partial cross-sectional view of an open state of the valve of FIG. 19.
21 is a cross-sectional view of another valve of the present invention in a closed state, and FIG. 22 is a cross-sectional view of the valve of FIG. 21 in an open state.
Figure 23 is an embodiment combining several valves according to the present invention, to implement a multi-stage decompression.
24 is another embodiment combining the valves of the present invention.

1 is a side view of the valve of the present invention in a closed state. The valve 1 has a base 2 having a length H, a diameter D and having an inlet 5, an intermediate portion 3 of length L, a flat portion 4 having a length N and an outlet 6. The circumference of the fluid contact point is marked with K in the drawing, and the circumferential length is K = Dπ when the basic part (2) is circular in this valve (1). The ratio of the valve 1 is given in comparison to the actual or imaginary D value.

2 is a plan view of the valve of FIG. The basic part 2 of the valve 1 is length H, diameter D and has an inlet 5, the middle part 3 is length L, and the flat part 4 is length N and width S and a press rim (7) and outlet (6).

3 is a front view of the valve of FIG. 1 viewed from an outlet side. In this figure the middle part 3 and the outlet 6 of the valve 1 can be seen, which is completely closed. In addition, the flat part 4 of the valve 1 can be seen, and the press rim 7 is formed in the flat part 4.

4 is a front view of the valve of FIG. 1 seen from the inlet side. The inlet 5 of the basic part 2 of the valve 1 is diameter D and the outlet 6 is closed. The flat part 4 can also be seen.

5 is a side view of the valve of FIG. 1 slightly open, FIG. 6 is a front view of the valve of FIG. 5 seen from the outlet side, and FIG. 7 is a front view of the valve of FIG. 5 seen from the inlet side. In the drawing, the basic part 2 of the valve 1 has a length L, a diameter D and has an inlet 5, the middle part 3 has a length L, and the flat part 4 has a length N and a width S. The press rim 7 has an outlet 6. As can be seen from the figure, the outlet 6 is slightly open. In this slightly open state, the flow section cross section A2 of the flat section 4 and the flow section cross section A1 of the basic section 2 are indicated in the figure.

FIG. 8 is a side view of the valve of FIG. 1 fully open, FIG. 9 is a front view of the valve of FIG. 8 seen from the inlet, and FIG. 10 is a front view of the valve of FIG. 8 seen from the outlet. The dimensions of each part are as described above, and as shown in the figure the outlet 6 is in the fully open state.

FIG. 11 is a side view of another valve of the present invention with the magnetic plate disposed on a flat portion, FIG. 12 is a plan view of the valve of FIG. 11, and FIG. 13 is a front view of the valve of FIG. 11 as seen from the outlet 6. In this case, a pair of magnet plates 8 are disposed on both surfaces of the flat portion 4 of the valve 1, and the press rim 7 is positioned with a distance M out of the magnet plate 8, where 0 <M A relationship of <4V is established. The interval between the magnetic plates 8 is G, and 0 < G < 4V. The magnetic plate 8 is fixed to the surface of the flat portion 4 by bonding or the like.

Alternatively, a magnet block of appropriate size may be used instead of the magnet plate 8, or the material to be magnetized may be mixed with the material of the flat part 4. At this time, the amount of the magnetization material to be mixed in the raw material is up to 60% by weight, but 40% by weight is preferred. The amount of such magnetization material depends on the magnetization requirement of the flat portion 4. The amount of magnetization material to be mixed into the raw material depends on the size of the valve 1 and the wall thickness V of the valve 1. On the other hand, the silicon sheet sprayed with the magnet powder may be fixed to the flat portion 4.

FIG. 14 is another embodiment of the valve of FIG. 11, which is a side view of the valve inflated with elastic fibers on a flat portion, FIG. 15 is a plan view of the valve of FIG. 14, and FIG. 16 is a view of the valve of FIG. 14 from the outlet 6. Front view. FIG. 17 is a side view when the valve of FIG. 14 is in an open position, and FIG. 18 is a front view of the valve of FIG. 17 seen from an outlet side. In this case, the elastic fibers 9 are pulled by the force of F and placed on the magnetic plate 8 disposed on the flat portion 4.

The valve 1 of FIG. 1 closes slowly until leakage is prevented, and in practice in most cases this process takes longer than the closing time allowed by the situation. While using the valve 1, the valve closes faster by the magnet plate 8 shown in FIG. 11, because with the help of the magnet plate 8 it is ensured that the valve 1 closes more strongly. As the magnetic force of the magnet plate 8 acts permanently and continuously, the closing force of the valve increases as the gap between the magnet plates 8 decreases. By this actuation mechanism of the magnetic force, the closing process is shortened.

When the elastic fiber 9 is disposed on the flat portion 4 of the valve 1, the closing time of the valve 1 can be further shortened, but the influence of the elastic fiber 9 on the closing of the valve 1 In some cases it may not be appropriate to use elastic fibers as it will shrink over time and even go down to zero. At the end of the closing step, the closing process of the valve 1 may be the same as the basic structure of FIG.

When the elastic fibers 9 are used together on the magnet plate 8, the closing force of the valve is considerably stronger. When the magnet plate and the elastic fiber are used together, the tension force of the elastic fiber 9 is added to the magnetic force of the magnet plate 8 when the valve 1 is closed, thereby controlling the closing force of the valve. That is, the tensile force F of the elastic fiber 9 accelerates the operation of the magnetic plate 8, specifically, when the magnetic plate 8 is far from each other and the magnetic force is small, the two magnetic plates are brought closer to each other. Properly actuated valve (1) closes faster.

The elastic fiber 9 may be provided with a cam for closing the valve or the elastic fiber itself may have a different diameter. In this way, the closing and pulling forces can vary.

19 is a partial cross-sectional view of a closed state of another valve according to the present invention, and FIG. 20 is a partial cross-sectional view of an open state of the valve of FIG. 19. The valve 1 has the same structure as the valve of FIG. 1, but a flow gap 10 is formed in the middle portion 3 of the valve 1. When the discharge should be fast and the backflow slow, the present embodiment can be applied. In the present embodiment, the discharge time is much faster because the fluid exits the outlet 6 as well as the flow gap 10. At the same time, a small amount of air can enter and exit through the flow gap 10 even in the closed state, so that the closed space inside can communicate with the outside through the flow gap 10. Flow occurs in both directions through the flow gap 10. If the pressure change is large, the pressure can be balanced by opening the valve. An advantage of this embodiment is that different flow rate values can be selected for each flow direction. The size of the flow gap 10 can be adjusted according to the situation.

21 is a cross-sectional view of another valve of the present invention in a closed state, and FIG. 22 is a cross-sectional view of the valve of FIG. 21 in an open state. In this embodiment, a material having a plurality of holes 11 is used as the material of the valve 1, such as a dense tissue fabric or a semipermeable material. This approach yields results similar to those of FIG. 19 only by using suitable elastic fabrics.

FIG. 23 is an embodiment combining several valves according to the present invention, which implements multi-stage pressure reduction, and a control space 12 is connected to a valve assembly combining a plurality of valves 1. The illustrated valve assembly consists of five valves 1, of which four valves 1 discharge the fluid from the control space 12 through the outlet 6, but with the opening pressure of each valve 1. These valves are set differently so that each valve opens with a different pressure difference. The function of the valves 1 operating at different pressure differentials is determined with the aid of a machine such as an excenter. With these machines these valves can be used. The fifth valve is responsible for the backflow of the fluid. The advantage of this valve assembly is that it can generate various pressure states without adjusting the valve separately. Thus, four fixed pressure conditions are created. However, in this manner, the pressure cannot be adjusted without permission.

24 is another embodiment incorporating the valves of the present invention, where one valve 1 discharges the fluid from the control chamber 12 and the other valve 1 flows the fluid back to the control chamber 12. This approach implements a traditional 3/2 valve using the valve 1 according to the invention. In this case, it is preferable that the opening pressure of one valve 1 is higher than the opening pressure of the other valve 1 responsible for supply.

According to the present invention, it is preferable to use a tube of diameter D and length H made of a soft elastic material such as silicone.

By using the valve 1 according to the present invention, a large flow rate (1 to 8 l / sec) can be discharged. The valve (1) opens in the basic position with zero flow rate and can be harmonized even when the pressure difference is relatively small, such as 0 to 5 kPa, and the reverse flow starts due to the pressure difference between the inner pressure of the tube and the large pressure applied to the tube wall from the outside. At this point, the valve can be strongly closed and kept closed.

In addition, the valve 1 according to the present invention can match the cross-sectional area with the amount of air passing through, so that the time for emptying and filling the adjusting space can be sufficiently long. The cross-sectional area of the valve 1 changes according to the pressure difference and the magnitude of the flow rate.

Preferably, the valve 1 consists of a tube of circular cross section and one end of the tube is flat. Since the material of the tube is flexible, the valve 1 naturally has a conical shape.

The wall thickness of the tube constituting the valve should have a degree of flattening in consideration of the flexibility of the material, and the leveling of the formed flattening should maintain its shape. In addition, the cross-sectional area to which the required flow rate can be discharged should be as laminar as possible. The size of the outer surface of the flat part significantly affects the delay of the closing speed when acting as a check valve. When used as a check valve, the valve is open in its default position, but may be closed, which is eliminated by the pressure differential due to the inflow. The surface area of the flat part should be large enough to realize the closing function.

In some cases, the polymerization of silicone may be used to form the valve of the present invention. For example, for the purpose of making check valves a permanently flat part of the tube can be made, which must be made last. This method is used to make a discharge valve.

When used as a pressure reducing valve, the closed position can be basically maintained by magnets, elastic fibers, or auxiliary forces such as gravity or spring force. By adjusting this auxiliary force, the valve can be closed at a predetermined pressure differential. The open pressure differential is also determined by this force.

The valve of the present invention basically functions as a check valve, but may also perform other functions as necessary. The valve of the present invention is structurally open in the basic state, but closes automatically in the event of a backflow to ensure proper and strong closure. That is, in the check valve state, free flow occurs in only one direction.

When the valve 1 is mechanically opened in the basic position, the pressure difference between the inlet and the outlet is balanced without very little flow loss in both directions, and this solves the airing of the adjusting space. At the same time, if a backflow occurs the flow rate is at least at least close to the valve 1. This is possible because the cross sectional flow area, material properties, thickness, and material components were chosen for this purpose.

The valve according to the present invention is inexpensive, simple in structure, easy to manufacture, long in life, no moving parts in the basic structure, the valve has self-closing function, high repeatability, and no leakage There is an advantage to being guaranteed. The valve of the present invention can be manufactured integrally, and can be produced using existing techniques and materials.

The valve according to the invention can be balanced even at low flow values due to small pressure differences in the basic position, but the valve closes if the pressure changes suddenly or there is a large flow rate.

The field of application of the present invention is as follows:

-Air bed, air cushion, shock cushion;

-Preventing overpressure or maintaining overpressure in enclosed spaces;

-One-way flow;

-Mass flow in one direction, flow restriction in the other direction.

Claims (12)

Soft and flexible, with a basic part 2 having one end portion having a complete cross-sectional area, a middle part 3 connected to the base part 2 and having a reduced cross-sectional area, and a flat part 4 connected to the middle part 3 at the other end thereof. In the general-purpose general purpose valve (1) made of a material integrally:
The flat part 4 is of a structure sintered, pressed or glued with the same material as the valve 1;
The press rim 7 of sintering or pressing or bonded structure is connected to the flat portion 4 in an airtight structure at the edge thereof;
When the circumferential length K of the basic portion and the length L of the intermediate portion 3 are L = 0.5 ... 6 (K / π);
A general purpose multipurpose valve, characterized in that the length N of the press rim 7 is N = 0.1 ... 2 (K / π). The general-purpose valve according to claim 1, wherein the cross-sectional shape of the basic portion (2) is circular, elliptical, triangular, square, hexagonal, octagonal or polygonal. 3. The general purpose multipurpose valve according to claim 1, wherein the flat part is closed or partially open in the basic state of the valve. 4. The flat portion 4 according to any one of claims 1 to 3, wherein a magnetic plate 8 is provided on the flat portion 4, or a metal powder or a magnetic powder is placed on the flat portion 4 in order to influence the closing of the valve 1. General purpose multipurpose valve, characterized in that mixing in the material. The method according to any one of claims 1 to 4, characterized in that the elastic elastic fibers 9 are provided symmetrically or asymmetrically in the flat part 4 in order to influence the closing of the valve 1. General purpose multipurpose valve. The material of the valve (1) according to any one of claims 1 to 5, wherein the material of the valve (1) is natural / artificial rubber, silicone rubber, or an impregnated or surface treated fabric or paper, wherein the thickness of the material of the valve is V. A general purpose multipurpose valve, wherein = 0.01 ... 0.2 (K / π). The general purpose multipurpose valve according to any one of claims 1 to 5, wherein the material of the valve (1) is porous fabric or paper, and the porosity for free discharge is 2 ... 40%. 8. The general purpose multipurpose valve according to any one of claims 1 to 7, wherein a plurality of flow gaps (10) are formed in the intermediate portion (1). The valve (1) according to any one of claims 1 to 8, wherein the valve (1) is partially open in the basic state, and the flow cross-sectional area (A2) of the flat portion (4) in the basic state is the cross-sectional area (A1) of the basic portion (2). General purpose multipurpose valve, characterized in that 1 ... 66% of). 10. The general-purpose multipurpose valve according to any one of claims 1 to 9, wherein S = 0.04 ... 0.42 (K / [pi]) when the width of the press rim is S. The general-purpose multipurpose valve according to any one of claims 1 to 10, wherein a filter is disposed at an inlet (5) or an outlet (6) of the valve. 12. The general purpose multipurpose valve according to any one of the preceding claims, characterized in that the closing of the valve (1) is regulated by a change in magnetic force.

Images