KR20110091071A - Valve for preventing water flow backward - Google Patents

Abstract

PURPOSE: A backflow prevention valve for rapidly preventing reverse direction flow is provided to reduce the resistance toward the normal-direction flow of fluid and to increase resistance toward the reverse direction flow of the fluid. CONSTITUTION: A backflow prevention valve for rapidly preventing reverse direction flow comprises a valve tube(31), a ball(32), and a stopper. The valve body is screwed between the inlet tube and the outlet line. The ball is horizontally extended from the inner circumference of the valve tube to the center part and is settled on a hollow protrusion. The stopper is protruded on the inner circumference of the valve tube in a longitudinal direction and guides the elevation of the ball. A guide line secures an inlet path through which fluid passes.

Description

VALVE FOR PREVENTING WATER FLOW BACKWARD

The present invention relates to a non-return valve, and more particularly, to a non-return valve capable of quickly ensuring a forward flow of a fluid and quickly blocking a reverse flow with a simple configuration.

In general, the non-return valve prevents the flow in one direction while ensuring the flow of the fluid in one direction, and is installed in transport pipes or water pipes of various oils and the like.

1 is a structural diagram for explaining a general water pipe.

For example, as shown in the structural diagram of FIG. 1, a backflow prevention valve 4 is installed in the water pipe 2 connected to the water meter 1 so that the water flows only in one direction.

2A to 2C are cross-sectional views for explaining the operation of the non-return valve in accordance with the prior application 20-2001-0016762. The non-return valve according to the prior application has a flow path 5 formed therein and is coupled to the housing 15 and the housing 15 having the valve seat 10 provided at a predetermined position of the flow path 5 so that the valve seat ( 10) includes a stem 28 provided with a handle 24 on the upper and lowered adjacent to or far away. Then, the lower end of the stem 28, the valve body 35 is coupled to the lift and lower, the spring 45 is interposed between the stem 28 and the valve body 35, the housing 15 is formed into a tubular body of the water pipe It is connected between the supply end 1 and the discharge end 2, and the valve seat 10 is protrudingly formed in the inner wall, and the tip of this valve seat 10 is tapered so that the diameter may become narrow toward the lower side. The valve body 35 is composed of an elevating member 36 having an approximately " 자 " shape and a disc 37 fixedly coupled to the lower side of the elevating member 36, and the elevating member fitted to the lower end of the stem 28 is mounted. It is configured to be able to slide up and down by the member 36, and the disk 37 is tapered and tightly coupled to the valve seat 10 so that its cross-sectional area becomes narrower toward the lower side. The spring 45 is interposed between the stem 28 and the valve body 35. The spring 45 is caught by the lower end of the upper system 28 and the lower end is caught by the upper end of the valve body 35. ) Is pushed toward the valve seat (10). The spring 45 is compressed to the stem 28 when the pressure of the water acts to separate the valve seat 35 from the valve seat 10, while the pressure of the water drops and flows back in the opposite direction from the water flow. The lower surface of the valve body 35 is pushed toward the valve seat 10 to be in close contact with the valve seat 10. However, the non-return valve according to the prior application is designed to open and close the valve seat 10 by the valve body 35 as the spring 45 expands or contracts according to the water pressure, so that the elasticity of the spring 45 for a long time is used. It is weakened and causes the deterioration of the shielding function, is deposited in the impurity spring in water 45, and acts as an element to reduce its resilience, and it is lifted by the spring 45 to drop the flow rate, and the naga spring 45 and The valve body 35 must be prepared with each component, which greatly reduces assembly and productivity.

SUMMARY OF THE INVENTION An object of the present invention is to provide a non-return valve for ensuring a forward flow of a fluid in a simple configuration and for quickly blocking a reverse flow.

It is an object of the present invention to provide a non-return valve capable of significantly improving productivity by reducing manufacturing costs while eliminating malfunctions or defects.

SUMMARY OF THE INVENTION An object of the present invention is to provide a non-return valve capable of more quickly opening and closing a hollow, minimizing a resistance to a flow of a fluid, and ensuring a rapid flow of a fluid but also blocking a back flow of a fluid quickly. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a non-return valve capable of speeding up a flow rate while vortexing a fluid along a guideline and a stopper.

It is an object of the present invention to provide a non-return valve capable of reducing resistance to forward flow of fluid and weighting resistance to reverse flow of fluid.

The present invention for achieving the above object,

In the non-return valve comprising a valve body interposed between the inlet pipe and the discharge pipe,

The valve body is a valve pipe screwed between the inlet pipe and the discharge pipe, the seating jaw is horizontally extended toward the center from the lower inner periphery of the valve pipe and raised when the fluid flows from the inlet pipe When the fluid flows back from the discharge pipe and the ball seated in the hollow, and the inlet passage for passing the fluid flowing from the inlet pipe while protruding in the longitudinal direction to the inner periphery of the valve tube to guide the lifting operation of the ball Include guidelines to ensure

The discharge pipe is characterized in that it includes a stopper that protrudes in the longitudinal direction to the inner periphery to prevent the rise of the ball while ensuring a discharge passage for discharging the fluid flowing from the inlet pipe and the inlet passage .

The present invention has the effect of quickly ensuring the forward flow of the fluid in a simple configuration and can block the reverse flow quickly.

The present invention is a guide between the inlet pipe and the discharge pipe guided between the stopper and the seating jaw to ensure the rapid flow of the fluid at the same time as a simple configuration of the ball to prevent the reverse flow of the product without causing a malfunction or failure The cost is lowered and the productivity can be greatly improved.

According to the present invention, when the ball is seated by the hollow of the upper and lower straits, it is possible to achieve a surface contact rather than a line contact, thereby minimizing the leaking phenomenon during the backflow of the fluid. have.

According to the present invention, the opening and closing of the hollow can be performed more quickly, and furthermore, the O-ring can be inserted into the lower side of the ball to maximize the confinement force. Furthermore, the upper side of the ball is provided with a concave groove to provide resistance to the fluid flowing back from the discharge pipe. By allowing it to be received immediately, it ensures the rapid flow of the fluid but also has the effect of quickly blocking the back flow of the fluid.

The present invention has the effect of vortexing the fluid flowing from the inlet pipe along the spiral guideline and the stopper to make the flow rate even faster.

The present invention has the effect that the thickness of the guide line and the stopper from the upper direction to the lower direction is smaller to reduce the resistance to the forward flow of the fluid and to increase the resistance to the reverse flow of the fluid.

1 is a structural diagram for explaining a general water pipe.
2A to 2C are cross-sectional views for explaining the operation of the non-return valve according to the line application.
3A is an exploded perspective view showing a non-return valve according to the first embodiment of the present invention.
Fig. 3B is a perspective view of a main part cutaway showing the non-return valve according to the first embodiment of the present invention.
Fig. 3C is a sectional view of the fluid discharge, showing the non-return valve according to the first embodiment of the present invention.
Fig. 3D is a sectional view of the fluid backflow showing the non-return valve according to the first embodiment of the present invention.
4A is an exploded perspective view showing a non-return valve according to a second embodiment of the present invention.
Figure 4b is a perspective view of the main portion showing the non-return valve in accordance with a second embodiment of the present invention.
4C is a sectional view of the fluid discharge, showing the non-return valve according to the second embodiment of the present invention;
4D is a sectional view of a fluid backflow showing a non-return valve according to a second embodiment of the present invention.
5A is an exploded perspective view showing a non-return valve according to a third embodiment of the present invention.
Fig. 5B is a perspective view of a main part cutaway showing the non-return valve according to the third embodiment of the present invention.
Fig. 5C is a sectional view of the fluid discharge, showing the non-return valve according to the third embodiment of the present invention.
Fig. 5D is a sectional view of the fluid backflow showing the non-return valve according to the third embodiment of the present invention.

A preferred embodiment of the non-return valve according to the present invention will be described with reference to the drawings, and a plurality of embodiments may exist, and through such embodiments, the objects, features, and advantages of the present invention can be better understood. Will be.

The non-return valve according to the present invention basically includes a valve body 30 interposed between the inlet pipe 10 and the outlet pipe 20 as shown in FIGS. 3A to 5D.

The valve body 30 is open to the forward flow of the fluid (expressed in the upward direction in the drawing) and closed to the reverse flow of the fluid (expressed in the downward direction in the drawing) to allow the fluid to flow in only one direction.

More specifically, the valve body 30 extends horizontally toward the center from the valve tube 31 screwed between the inlet pipe 10 and the discharge pipe 20 and from the lower inner circumference of the valve pipe 31 to be hollow. A seating jaw 31a having a hole 31b, a ball 32 that rises when the fluid flows from the inlet pipe 10 and is seated in the hollow 31b when the fluid flows back from the discharge pipe 20, and a valve. It includes a guideline 31c protruding in the longitudinal direction to the inner periphery of the pipe 31 to guide the lifting operation of the ball 32 while ensuring an inlet passage (31d) for passing the fluid introduced from the inlet pipe (10) do.

In addition, the discharge pipe 20 protrudes in the longitudinal direction at its inner circumference to prevent the rise of the ball 32 while ensuring the discharge passage 22 for discharging the fluid introduced from the inlet pipe 10 and the inlet passage 31d. The stopper 21 is included.

When the fluid flows in from the inlet pipe 10, the ball 32 rises to open the hollow 31b and is stopped by the stopper 21 of the discharge pipe 20 so that the fluid is hollow 31b and the valve pipe ( 31, it is possible to flow quickly through the inlet passage 31d and the discharge passage 22 to the discharge pipe 20, on the contrary, when the fluid flows back from the discharge pipe 20, the ball 32 is lowered and seated By being seated in the hollow 31b of the jaw 31a, it is no longer possible to prevent backflow to the inlet pipe 10.

As such, the non-return valve according to the present invention is guided by the guide line 31c between the inlet pipe 10 and the discharge pipe 20 to ensure the rapid flow of the fluid between the stopper 21 and the seating jaw 31a. At the same time, by taking the simple configuration of the ball 32 to prevent backflow, malfunctions or defects do not occur, and the production cost is low, and thus productivity can be greatly improved.

At this time, the guide line 31c is made of three to five protruding in the longitudinal direction at equal intervals from the inner circumference of the valve tube 31, the stopper 21 is equally spaced from the inner circumference of the discharge pipe 20 It may consist of three to five protruding in the longitudinal direction.

When the guideline 31c is made of at least three, the ball 32 can be guided at an angle of 120 °, and if it is made up of five, the guide can be guided at a more dense angle. It can impede and limit.

In addition, the hollow (31b) is made up of the upper and lower straits so that when the ball 32 is seated to achieve a surface contact rather than a line contact to minimize the phenomenon of leakage during the backflow of the fluid If necessary, the ball 32 may be fitted with an O-ring 32b at the lower end thereof, as shown in FIGS. 4A to 5D, and may be provided with a concave groove 32a at an upper side thereof.

Although spherical balls 32 may be used as shown in FIGS. 3A-3D, when the O-rings 32b are fitted at the bottom thereof as shown in FIGS. 4A-5D, the sealing force with the hollow 31b is enhanced. In addition, it is possible to directly receive the resistance by the fluid flowing back from the discharge pipe 20 by the concave groove (32a), thereby ensuring a rapid flow of the fluid can also quickly block the back flow of the fluid.

Meanwhile, the guide line 31c and the stopper 21 may be bent in a spiral as shown in FIGS. 5A to 5D.

When the guide line 31c and the stopper 21 are bent in a spiral shape, the fluid flowing from the inlet pipe 10 vortexes along the guide line 31c and the stopper 21 of the spiral shape, so that the flow speed is faster. [The principle of rapid discharge by vortex when trying to pour out the fluid in a beverage bottle is possible].

Furthermore, the guide lines 31c and the stoppers 21 are preferably made smaller in thickness from the upper direction to the lower direction so as to reduce the resistance to the forward flow of the fluid and increase the resistance to the reverse flow of the fluid. .

The present invention is utilized in the industrial field to enable the flow of fluid in one direction.

10: inlet pipe 20: discharge pipe
21: stopper 22: discharge passage
30: valve body 31: valve tube
31a: Seating jaw 31b: Hollow
31c: Guidelines 31d: Inflow passage
32: ball 32a: concave groove
32b: O-ring

Claims (7)

In the non-return valve including the valve body 30 interposed between the inlet pipe 10 and the discharge pipe 20,
The valve body 30 is horizontally extended toward the center from the valve tube 31 screwed between the inlet pipe 10 and the discharge pipe 20 and the lower inner circumference of the valve pipe 31 to be hollow 31b. The seating jaw (31a) is perforated, and the ball 32 is seated in the hollow (31b) when the fluid flows in from the inlet pipe (10) and flows back from the discharge pipe (20), Guidelines for protruding in the longitudinal direction on the inner circumference of the valve tube 31 to guide the lifting operation of the ball 32 while ensuring an inlet passage (31d) for passing the fluid introduced from the inlet tube (10) ( 31c),
The discharge pipe 20 protrudes in the longitudinal direction at its inner circumference to prevent the rise of the ball 32 while discharging the discharge passage 22 for discharging the fluid introduced from the inlet pipe 10 and the inlet passage 31d. Non-return valve, characterized in that it comprises a stopper (21) to ensure. The method of claim 1,
The guide line 31c is made of three to five protruding in the longitudinal direction at equal intervals from the inner circumference of the valve tube 31,
The stopper (21) is a non-return valve, characterized in that consisting of three to five protruding in the longitudinal direction at equal intervals from the inner circumference of the discharge pipe (20). The method of claim 2,
The hollow (31b) is a non-return valve, characterized in that consisting of upper and lower narrow (上 廣 下 狹). The method of claim 1,
The ball 32 is a non-return valve, characterized in that having a concave groove (32a) on the upper side. The method of claim 1,
And an O-ring (32b) fitted to the lower outer circumference of the ball (32). 6. The method according to any one of claims 1 to 5,
The guide line (31c) and the stopper (21) is a non-return valve, characterized in that curved in a spiral. 6. The method according to any one of claims 1 to 5,
The guide line (31c) and the stopper (21) is a non-return valve, characterized in that the thickness is reduced from the upper direction toward the lower direction.

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