KR200255638Y1 - A Device For Backward Flow Prevention In Drainpipe With A Buoyancy Induction Function - Google Patents

Abstract

The present invention relates to a backflow prevention device of the drain pipe having a non-induced function, the float ball 12 is automatically lifted and lowered by buoyancy and self-weight while the drain passage of the valve pipe 10 connected to the drain pipe 30 automatically The fluid drain holes 21 and 25 are centrally passed through the upper and lower portions of the valve tube 10 so as to be opened and closed so that the curved backflow preventer 20 and the drain inlet 22 are formed to face each other. Also, the drain inlet 22 is upwardly above the fluid drain hole 25 so that the float ball 12 seated and seated in the fluid drain hole 25 by its own weight may be buoyantly lifted by the fluid during the draining operation. The buoyancy guide jaw 23 is formed to protrude so that the buoyancy force transmitted downward and sideward of the float ball 12 is structurally greater than the hydraulic pressure of the fluid applied above the float ball 12 during the drainage operation. The flow blocking the passage See the work while opening 12 is naturally buoyant and rise, characterized in that so that the fluid passage can be made more reliable.

Description

A device for backward flow prevention in drainpipe with a buoyancy induction function

The present invention relates to a backflow prevention device of the drain pipe that can be smoothly floated by the float hole, which is the opening and closing means for the fluid during the drainage operation, more specifically, the fluid applied above the float ball during the drainage operation As the buoyancy force transmitted downward and lateral to the float ball is structurally greater than the water pressure of the float ball, the float ball blocking the drain passage naturally opens up as buoyancy rises, so that the fluid passage can be made more secure. It relates to a backflow prevention device of.

As is well known, conventional check valves made up of packings or magnets have been shown to be caused by a significant hydraulic difference between the inlet and the outflow side of the valve when the drainage is not discharged to the outside when the drainage stops. There was not enough to completely block the backflow of the drainage, and there was a problem that it is difficult to properly control the amount of fluid passing through the large amount and the small amount due to the opening and closing of the valve simply by the hydraulic car or magnetic force, causing a drainage backflow. .

On the other hand, in view of this situation, Utility Model Registration Application No. 2001-24163, filed by the applicant in advance, as shown in Figure 4, as shown in Figure 4, the reverse flow prevention formed in the upper portion and the lower portion of the valve pipe 10 as a drain passage The float ball 12, which is an opening and closing means, is positioned between the water inlet 20 and the drain inlet 22. The float inlet 12 is moved up and down by the buoyancy of the fluid during the draining operation. While opening the fluid drain hole 25 to allow the fluid to pass through, while when the backwater flows back from the outside, the float ball 12 is moved up and down by the hydraulic pressure of the fluid, which is the waste water, and the fluid drain hole 21 of the backflow preventer 20 ) Is automatically sealed so that the backflow of sewage can be shut off.

However, the reverse flow prevention measures are used to automatically close the fluid drain hole 21 of the backflow preventer 20 by the float ball 12 is easily moved to the backflow preventer 20 by the hydraulic pressure when the sewage flow back. Although there are no difficulties, the water pressure that presses the float ball 12 downward is relatively high than the buoyancy force that lifts and floats the float ball 12 above the backflow prevention block 20 during the drainage operation. This is not done properly, and as a result, when the drainage operation of a large number of fluids at the same time, the safety problem that the water pressure inside the valve tube 10 is rapidly increased and the drainage pipe 30 may be ruptured.

Therefore, the present invention has a buoyancy force that allows the float ball to be elevated above the fluid drain hole structurally because a part of the float ball is tightly inserted into the fluid drain hole of the drain inlet during the drainage operation. It was devised to solve the problems of the prior art, which could not be difficult to deliver. The drainage passage is designed so that the buoyancy transmitted downward and to the side of the float ball is structurally greater than the hydraulic pressure of the fluid applied above the float ball during the draining operation. The purpose of the present invention is to provide a backflow prevention device for a drain pipe having a buoyancy induction function, in which a float ball blocking the buoyant force naturally rises.

1 is a main portion of the backflow prevention device of the present invention.

Figure 2 is a structure of the operation of the backflow prevention device of the present invention.

Figure 3 is a state of use of the backflow prevention device of the present invention.

Figure 4 is a structural diagram of the operation of the non-return device of the prior art.

Explanation of symbols on the main parts of the drawings

10 valve tube 12 float ball

20: backflow preventer 21,25: fluid drainage

22: drainage inlet 23: buoyancy induction jaw

27,32: sealed O-ring 28: buoyancy guide wing

30: drain pipe

The reverse flow prevention device of the drain pipe having a buoyancy induction function of the present invention for achieving the above object is the valve so that the float passage of the valve pipe connected to the drain pipe is automatically opened and closed operation while the float ball is raised and lowered by buoyancy and self-weight The fluid drainage hole is centrally penetrated at the upper portion and the lower portion of the pipe, respectively, so that the curved backflow preventer and the drainage inlet are formed to face each other, and the drainage inlet is inserted into the fluid drainage hole by its own weight. The buoyancy inducing jaw is formed to protrude above the fluid drain hole so that the buoyancy can be increased by the fluid during operation.

In addition, the drainage inlet is characterized in that a plurality of buoyancy guide wings protruded obliquely toward the valve tube so that the inflow of fluid toward the fluid drain hole during the drainage operation is integrally formed.

In particular, the drainage inlet is fixed to the sealing O-ring on the upper side of the buoyancy induction jaw so that the float ball is sealed contact as in the fluid drain hole of the backflow preventer, while the float ball is spaced higher than the horizontal plane outside the buoyancy induction jaw The protrusion height of the buoyancy guide jaw is characterized in that the set projection.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, and for convenience of description, the same components as those of the prior art described above are denoted by the same reference numerals.

1 is a seat height of the float ball 12 is inserted and seated by the weight of the central portion of the drain inlet 22 located in the lower portion of the valve tube 10 so that the buoyancy induction function can be given according to the present invention The buoyancy guide jaw 23 is formed to a higher height to show a partially cut state for the valve tube 10 through which the fluid drain hole 25 is formed in the vertical direction, and FIG. 2 and FIG. The operation structure during the drainage operation for the prevention device and the use state in which the valve pipe 10, which is the backflow prevention device of the present invention, is connected to the drainage pipe 30 are configured.

As shown in the figure, the float ball 12 is moved up and down by the buoyancy and self-weight in the valve tube 10 to the fluid drain hole 21 and the drain inlet 22 of the backflow prevention block 20 which is a drainage passage. It is possible to automatically open and close the fluid drain hole 25 of the fluid drain hole (25), and during the drainage operation, the fluid drain hole (12) is easily lifted and moved by the buoyancy to be positioned away from the drain inlet (22). The buoyancy guide jaw 23 protrudes to the upper center of the drain inlet 22 through which 25 is formed.

That is, the back flow in which the fluid drain holes 21 and 25 which are drainage passages respectively pass through the float ball 12 to the center of the upper part and the lower part of the valve tube 10 so that the float ball 12 can be opened and closed. The guard 20 and the drain inlet 22 are formed to face each other, and the drain inlet 22 positioned below the float ball 12 is usually inserted into the fluid drain hole 25 by its own weight. The buoyancy induction jaw 23 protrudes above the fluid drain hole 25 so that the buoyancy rise can be easily generated by the fluid during the drainage operation.

In addition, the buoyancy guide jaw 23 protruding upward from the center of the drainage inlet 22 so that the float ball 12 can be structurally buoyant rise with respect to the inflow of the fluid is usually float ball (inserted and seated by its own weight ( Protruding height is set so that the seating height of 12) can be spaced relatively higher than the horizontal surface of the outside, which is introduced into the buoyancy guide jaw 23 during the drainage operation to lower the bottom of the float ball 12 The buoyancy of the concentrated fluid is relatively large compared to the hydraulic pressure pressurizing the upper portion of the float ball 12 so that the float ball 12 can be easily lifted and lifted away from the buoyancy guide jaw (23).

That is, the buoyancy induction jaw 23, which is the buoyancy induction device 23 of the float ball 12, is lower than the hydraulic pressure of the fluid applied upward when the float ball 12 inserted and seated toward the fluid drain hole 25 is introduced. As shown in the operation structure of Figure 2 so that the buoyancy transmitted to the side can be relatively high, the seating height of the float ball 12 is inserted into the buoyancy guide jaw 23 is the side of the buoyancy guide jaw 23 By being spaced apart as high as t with respect to the horizontal plane as a part, the buoyancy of the fluid in the drainage operation can be more reliably made structurally.

In addition, the float ball 12 is preferably sized so that a portion of the float inlet 22 and the backflow preventer 20 is in close contact with each other, in particular plastic, rubber, cork to respond to the buoyancy of the fluid It is preferable to use materials such as materials and the like and materials having equivalent properties.

In addition, the drainage inlet 22 is a fixed O-ring 27 is installed on the buoyancy guide chin 23 above the float ball 12 so as to seal the contact as in the fluid drain hole 21 of the backflow prevention 20 And, this is the sealing O-ring 32 is fastened to the connection end of the valve tube 10 and the drain pipe 30 is pressed or screwed in a concave-convex shape with each other acts as airtight holding means.

In addition, the backflow prevention 20 and the drain inlet 22 may be formed integrally with the upper portion and the lower portion of the valve pipe 10 itself, the upper portion and the lower portion of the drain pipe 30 corresponding to the lower portion It is of course integrally formed on the coupling portion can be separated into a form that is fixed to the valve tube (10).

In addition, a plurality of buoyancy guide wings 28 are inclined upwardly toward the valve tube 10 so that the inflow of the fluid toward the fluid drain hole 25 may be concentrated at the horizontal surface, which is a side surface of the drain inlet 22. In addition, these buoyancy guide wings 28 are protruded radially and protruded 3-5 radially inside the valve tube 10 around the buoyancy guide jaw 23 in the center of the test several times.

In particular, the buoyancy guide blade 28 has a wide gap between the float ball 12 and the inner surface of the valve tube 10, so that the float ball 12 is accurately seated at the position of the fluid drain hole 25 and difficult to seal. Useful, when the gap between the float ball 12 and the valve tube 10 is narrow, protruding only the buoyancy guide jaw 23 to the central portion of the drain inlet 22 without protruding configuration of these buoyancy guide blades (28). The internal structure of the valve tube 10 can also be comprised.

In view of the operation relationship of the non-return device of the present invention, the fluid drained from the drain pipe 30 firstly passes through the fluid drain hole 25 formed through the backflow preventer 20 in the upper portion of the valve pipe 10. The fluid flows into the drain passage of the pipe (10), and the fluid flows toward the drain inlet (22) at the lower part of the valve pipe (10), and the fluid with respect to the float ball (12) above the buoyancy guide jaw (23). At the same time the hydraulic pressure of the buoyancy guide jaw 23 around the buoyancy guide wing 28 through the buoyancy of the fluid to the bottom and side of the float ball 12 is structurally easily transmitted.

Therefore, the buoyancy itself can be applied to the float ball 12 which is structurally positioned above the horizontal plane of the drainage inlet 22, which is the outer side of the buoyancy induction jaw 23, to be applied upward. In operation, the float ball 12 is moved upward and downward from the buoyancy induction jaw 23 while fluid flows smoothly to the drain pipe 30 below through the fluid drain hole 25 of the buoyancy induction jaw 23. Can be.

Then, when there is no drainage action after the drainage action, the float ball 12, which has been lifted and spaced apart from the buoyancy induction jaw 23 of the drainage inlet 22 at the time of the drainage action, depends on the direction induction of the plurality of buoyancy guide vanes 28. The seat may be inserted and seated on the buoyancy guide jaw 23 again, which may be sized such that the outer diameter of the float ball 12 may be naturally seated on the buoyancy guide jaw 23 with respect to the inner diameter of the valve tube 10. Of course.

In addition, the fluid drain hole 25 of the drain inlet 22 is automatically closed by the self-seating of the float ball 12 in the absence of drainage operation through the valve tube 10, which is a backflow prevention device of the present invention. It is possible to prevent the intrusion of odors, insects and the like that can be introduced from the drain pipe 30 below.

In addition, even when the sewage flows back to the valve tube 10 due to a sudden increase in water pressure from the drain pipe 30, the float ball 12 is moved up and down by the hydraulic pressure of the sewage, so that the fluid in the center of the backflow preventer 20 By closing the drain hole 25, the backwater of the sewage may be structurally blocked by preventing the backwater of the sewage flow further upward.

According to the backflow prevention device of the drain pipe having a buoyancy induction function of the present invention made in this way, the buoyancy transmitted to the float ball downward and sidewards by the buoyancy induction jaw structurally compared to the hydraulic pressure of the fluid applied above the float ball during the drain As the float ball blocking the drain passage naturally increases buoyancy, it can be opened and operated. This results in the float ball during the drainage operation, which prevents the buoyancy lift by the hydraulic pressure of the fluid. By opening, a smooth drainage operation can be achieved.

In addition, through the buoyancy guide jaw and a plurality of buoyancy guide wings protruding around the flow inflow to the float ball more reliably made, the buoyancy lift of the float ball can be more structurally secured, while drainage operation In case of normal or reverse flow, the float ball can reliably seal the fluid drain hole, which is the drainage passage, to prevent backflow of sewage and infiltration of foreign substances, so that a reliable backflow prevention function can be provided with structurally reliable drainage function. The effect is expected.

Claims (3)

As the float ball 12 moves up and down by buoyancy and self-weight, the drain passage of the valve pipe 10 connected to the drain pipe 30 is automatically opened and closed to the upper and lower portions of the valve pipe 10, respectively. The fluid drainage holes 21 and 25 are centrally penetrated, and the curved backflow preventer 20 and the drainage inlet 22 are installed to face each other, and the drainage inlet 22 is a fluid drainage hole by its own weight. The buoyancy induction function 23 is characterized in that the buoyancy induction jaw 23 is formed to protrude above the fluid drain hole 25 so that the float ball 12 inserted into the seat 25 can be buoyantly lifted by the fluid during the drainage operation. Backflow prevention device of the drain pipe having. The drain inlet 22 has a plurality of buoyancy guide wings 28 protruding obliquely toward the valve tube 10 so that the inflow of fluid toward the fluid drain hole 25 is concentrated during the drainage operation. Backflow prevention device of the drain pipe having a buoyancy induction function, characterized in that integrally formed. According to claim 1, The drain inlet 22 is closed o-ring (27) above the buoyancy induction jaw (23) so that the float ball 12 is in contact sealing, as in the fluid drain hole 21 of the backflow preventer (20) Buoyancy induction function, characterized in that the height of the projection of the buoyancy induction jaw 23 is set so that the float ball 12 is spaced apart higher than the horizontal plane outside the buoyancy induction jaw (23) Backflow prevention device of the drain pipe having a.