KR101774986B1 - Fluid back flow prevention apparatus - Google Patents

Fluid back flow prevention apparatus Download PDF

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Publication number
KR101774986B1
KR101774986B1 KR1020150134801A KR20150134801A KR101774986B1 KR 101774986 B1 KR101774986 B1 KR 101774986B1 KR 1020150134801 A KR1020150134801 A KR 1020150134801A KR 20150134801 A KR20150134801 A KR 20150134801A KR 101774986 B1 KR101774986 B1 KR 101774986B1
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KR
South Korea
Prior art keywords
fluid
opening
closing
fluid inlet
inlet
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Application number
KR1020150134801A
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Korean (ko)
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KR20170035642A (en
Inventor
김성주
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김성주
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Priority to KR1020150134801A priority Critical patent/KR101774986B1/en
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Publication of KR101774986B1 publication Critical patent/KR101774986B1/en

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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
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • 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
    • F16K33/00—Floats for actuation of valves or other apparatus

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

A fluid backflow prevention device is disclosed. The fluid backflow prevention device of the present invention includes: a base body having a fluid inlet and a fluid outlet; A guide wall portion provided inside the base body and having an upper fluid hole and a lower fluid hole; And a fluid channel opening / closing part provided in the guide wall part to open and close the fluid channel, wherein the fluid channel opening / closing part is engaged with the upper end of the guide wall part by the pressure of the fluid when the fluid is introduced through the fluid inlet, When the fluid flows into the fluid discharge port after being discharged through the fluid discharge port, the fluid is raised by the pressure of the inflow fluid, thereby blocking the fluid inlet and preventing the fluid from flowing back to the fluid inlet. .

Description

[0001] FLUID BACK FLOW PREVENTION APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fluid backflow prevention device, and more particularly, to a fluid backflow prevention device that is provided with a simple structure and can naturally prevent backflow of fluid by a fluid flow without a separate operation device.

The anti-reflux membrane allows the flow of the fluid to flow in a certain direction, blocking the flow of the fluid when the fluid receives pressure in the opposite direction. Fluids are liquids or gases and are mainly used in liquids such as water.

Generally, the shape or principle of a backflow prevention membrane or a flow meter used for piping, a mechanism such as a pump, and a sewer are slightly different from each other.

In the basic model, when the fluid flows, the anti-reflux membrane is opened by the force, and after the passage of the fluid, it is closed by the weight of the anti-reflux film or closed by the backflow pressure of the fluid. Other common models are traps, which are mainly used in sewers, and are often used as a device to keep water in the middle of the sewer to prevent back odors from flowing out.

Conventional backflow prevention membranes are mainly operated by liquids, so that it is difficult to realize a mechanism in which both the airflow and the liquid are operated as one backflow prevention membrane, and an improvement measure is required.

The above-described technical structure is a background technology for assisting an understanding of the present invention, and does not mean a conventional technology widely known in the technical field to which the present invention belongs.

Korean Registered Patent No. 10-1165464 (Neo-Pearl GmbH) 2012. 07. 06.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a fluid backflow prevention device capable of realizing a mechanism that is naturally operated by air and liquid, .

According to an aspect of the present invention, there is provided a fluid dispensing apparatus comprising: a base body having a fluid inlet and a fluid outlet; A guide wall portion provided in the base body and having an upper fluid hole and a lower fluid hole; And a fluid passage opening / closing part provided on the guide wall part to open / close a fluid passage, wherein the fluid passage opening / closing part is engaged with an upper end of the guide wall part due to fluid pressure when fluid is introduced through the fluid inlet, A fluid outlet port for discharging the fluid introduced through the fluid inlet port to the lower fluid hole and rising by the pressure of the fluid flowing into the fluid outlet port after being discharged through the fluid outlet port, Thereby preventing the fluid from flowing backward.

Wherein the fluid passage opening / closing portion includes: an opening / closing body having a lower side portion inserted into an inner wall of the guide wall portion; A blocking flange provided at an upper end of the opening / closing body to close the fluid inlet; And a protruding head provided on an upper surface of the opening / closing body and inserted into the fluid inlet when the fluid flows into the fluid outlet, thereby blocking the open space of the fluid inlet.

A floating body including styrofoam may be provided inside the opening / closing body.

A depressed depressed portion in an upward direction may be provided on a bottom portion of the opening / closing body.

The fluid passage opening / closing part may be made of stainless steel or a metal material having corrosion resistance, including casting.

The fluid passage opening / closing part may be made of a light metal material or a plastic material so as to be operated by the pressure of air.

The base body includes: an upper body having the fluid inlet; A lower body provided with the fluid outlet and detachably coupled to the upper body; And a fastening flange provided on at least one of the upper body and the lower body, and may further include a plurality of sealing members provided on the base body.

In the embodiments of the present invention, the fluid channel opening / closing part is hooked on the upper end of the guide wall part by the pressure of the fluid when the fluid flows through the fluid inlet, discharges the fluid flowing through the fluid inlet into the lower fluid hole, It is possible to prevent the fluid from flowing back to the fluid inlet by blocking the fluid inlet and thereby preventing the fluid from flowing back to the fluid inlet by the flow of the fluid without a separate operating device It is possible to implement a mechanism that naturally prevents backflow of fluid and is operated by both air and liquid.

1 is a perspective view schematically showing a fluid counterflow prevention device according to an embodiment of the present invention.
FIG. 2 is a bottom perspective view of the upper body shown in FIG. 1. FIG.
3 is a view showing a sealing member provided on the upper part of the upper body shown in FIG.
FIG. 4 is a perspective view showing that the upper body is separated in FIG. 1; FIG.
5 is a perspective view showing the fluid passage opening / closing part shown in FIG.
6 is a perspective view showing that the fluid passage opening / closing part is separated in FIG.
Figure 7 is a schematic bottom perspective view of Figure 4;
8 is an operational view of the present embodiment, showing a state in which the fluid passage opening / closing portion opens the fluid inlet.
Fig. 9 is an operational view of this embodiment showing a state in which the fluid passage opening / closing part clogs the fluid inlet by the fluid flowing back to the fluid outlet.

In order to fully understand the present invention, operational advantages of the present invention, and objects achieved by the practice of the present invention, reference should be made to the accompanying drawings and the accompanying drawings which illustrate preferred embodiments of the present invention.

Hereinafter, the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

2 is a bottom perspective view of the upper body shown in FIG. 1, and FIG. 3 is a cross-sectional view of the upper portion of the upper body shown in FIG. 1, 4 is a perspective view showing the fluid passage opening and closing part shown in Fig. 4, Fig. 6 is a perspective view showing the fluid passage opening and closing part shown in Fig. 4, and Fig. FIG. 7 is a schematic bottom perspective view of FIG. 4, FIG. 8 is an operational view of the present embodiment, showing a state in which the fluid passage opening / closing part opens the fluid inlet, and FIG. Fig. 9 is an operational view of this embodiment showing a state in which the fluid passage opening / closing part clogs the fluid inlet by the fluid flowing back to the fluid outlet.

As shown in these drawings, the fluid backflow prevention apparatus 1 according to the present embodiment includes a base body 100 provided with a fluid inlet 111 and a fluid outlet 121, A fluid passage opening and closing part 300 provided in the guide wall part 200 for opening and closing a passage for fluid and a fluid passage opening and closing part 300 provided in the guide wall part 200 for opening and closing the base body 100, And a plurality of sealing members 400 provided on the sealing member 400.

1, the base body 100 includes an upper body 110, a lower body 120 detachably coupled to the upper body 110, and upper and lower bodies 120 and 120, And a fastening flange 130, respectively.

The upper body 110 of the base body 100 is provided with a fluid inlet 111 provided as a fluid inflow passage, as shown in Fig.

2, a sealing groove 112 is formed in the inner wall of the upper body 110. The lower projection of the sealing member 400 is fitted into the sealing groove 112, Lt; / RTI > In some cases, an adhesive or the like may be applied to the sealing groove 112.

In addition, in this embodiment, the sealing groove 112 may be formed not only in the upper body 110 but also in the lower body 120 and in the fastening flange 130.

The lower body 120 of the base body 100 may be detachably screwed to the upper body 110 and the lower body 120 may be provided with a fluid outlet (121).

In this embodiment, when the lower body 120 and the upper body 110 are coupled to each other, an inclined wall may be provided on the inner wall, as shown in FIG. The inclined wall serves to guide the fluid introduced into the fluid inlet 111 to be smoothly discharged to the fluid outlet 121. Accordingly, the lower end of the inclined wall may be connected to the lower end of the lower fluid hole 220.

1, the fastening flange 130 of the base body 100 is provided at the upper end of the upper body 110 and the lower end of the lower body 120, respectively, so that the fastening flange 130 of the base body 100 is convenient .

In the present embodiment, the end of the fastening flange 130 is provided with threads, and can be easily coupled to the pre-installed pipe using a coupling.

In this embodiment, the upper body 110 and the lower body 120 may be provided parallel to each other so as to be installed in a narrow space.

6 and 8, the guide wall 200 is provided on the inner wall of the lower body 120 to guide the fluid passage opening / closing part 300 up and down.

In the present embodiment, the guide wall 200 is provided with an upper fluid hole 210 and a lower fluid hole 220, as shown in FIG. The upper fluid hole 210 serves as a passage for allowing fluid flowing through the fluid inlet 111 to flow into the guide wall 200. The lower fluid hole 220 is provided between the inner wall of the upper body 110 and the lower body 120 and the guide wall 200 so that the fluid flowing to the lower portion of the lower body 120 flows through the fluid outlet 121 It acts as a channel.

In this embodiment, the guide wall part 200 may be made of a metal material or a plastic material like the base body 100.

8, the fluid passage opening / closing part 300 is engaged with the upper end of the guide wall part 200 provided on the inner wall of the lower body 120 to open / close the fluid inlet 111 by the flow of the fluid, .

8, the fluid passage opening / closing part 300 includes an opening / closing body 310 into which a lower side portion is inserted into an inner wall of the guide wall portion 200, And a fluid outlet 111 which is inserted into the fluid inlet 111 when the fluid is introduced into the fluid outlet 121. The blocking flange 320 closes the opening 111 of the fluid inlet 111, (Not shown).

8, most of the opening / closing body 310 of the fluid passage opening / closing part 300 is accommodated inside the guide wall part 200. In the present embodiment, inside the opening / closing body 310, The float 311 is provided, as shown in Fig.

In the present embodiment, the float 311 serves to rapidly move the opening and closing body 310 by the fluid, and may include, for example, a styrofoam or an air pocket.

7, a depressed space 312 may be formed in the lower portion of the opening / closing body 310 in the upward direction of the opening / closing body 310, as shown in FIG. In the present embodiment, the pressurized space 312 is provided at a place where liquid or air is received, so that the open / close body 310 can be quickly moved and the entire weight of the open / close body 310 is reduced.

4 and 8, the blocking flange 320 of the fluid passage opening and closing part 300 is hooked on the upper end of the guide wall part 200 and serves to fix and support the opening and closing body 310.

9, the blocking flange 320 blocks the lower end edge of the fluid inlet 111 and opens the fluid inlet 111 (see FIG. 9) when the opening / closing body 310 is raised by the fluid flowing back through the fluid outlet 121. [ To prevent fluid from entering.

5, the protrusion head 330 of the fluid passage opening and closing part 300 is provided on the upper surface of the opening and closing body 310 so that when the opening and closing body 310 is lifted up toward the fluid inlet 111, 9, it is inserted into the fluid inlet 111 and serves to close the fluid inlet 111 together with the blocking flange 320. [

In this embodiment, the fluid channel opening and closing part 300 can be manufactured from various materials. For example, when used as an undergarment, it is a strong metal material having corrosion resistance and no warpage, and can be made of a light material such as stainless steel.

In addition, when the fluid passage opening and closing part 300 is used for shutting off the toilet air, it may be made of plastic, fiber reinforced plastic or the like so as to be operated by air.

Further, when the fluid passage opening and closing part 300 is used for a manhole, it can be made of thick stainless steel or a cast material (light and solid aluminum material) so as to prevent rust or fallen leaves.

As shown in FIG. 2, the sealing member 400 may be provided on the inner wall of the upper body 110 and may be provided on the lower body 120 as well.

In this embodiment, the sealing member 400 may be provided on the upper end fastening flange 130 of the upper body 110, as shown in FIG. At this time, the sealing member 400 may be accommodated between a pair of jaws provided on the fastening flange 130, and a sealing groove 112 (see FIG. 2) may be provided on a bottom portion between the pair of jaws.

Further, in this embodiment, the sealing member 400 may be made of a rubber material.

Hereinafter, the operation of the present embodiment will be briefly described with reference to Figs. 8 and 9. Fig.

8, when the fluid flows into the fluid outlet 121 after the fluid is introduced through the fluid inlet 111, the open / close body 310 moves the fluid flowing through the fluid inlet 111, And is hooked and supported by the upper end of the guide wall portion 200 by the pressure of the guide wall portion 200.

Next, as shown in FIG. 9, when the fluid flows backward through the fluid outlet 121, the open / close body 310 is raised by the pressure of the fluid flowing backward to block the fluid inlet 111. As a result, the fluid can be prevented from flowing back to the fluid inlet 111.

As described above, in the present embodiment, the fluid channel opening / closing part is engaged with the upper end of the guide wall part by the pressure of the fluid when the fluid flows through the fluid inlet, discharges the fluid flowing through the fluid inlet to the lower fluid hole, When the fluid flows into the fluid discharge port after being discharged through the fluid discharge port, it is raised by the pressure of the flowing fluid, thereby blocking the fluid inlet and preventing the fluid from flowing back to the fluid inlet. It is possible to implement a mechanism in which both the air and the liquid are both operated by preventing the backflow of the fluid naturally by the flow.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

1: Fluid backflow prevention device
100: base body 110: upper body
111: fluid inlet 112: sealing groove
120: lower body 121: fluid outlet
130: fastening flange 200: guide wall portion
210: upper fluid hole 220: lower fluid hole
300: fluid passage opening / closing part 310: opening / closing body
311: float 312: pressure space part
320: blocking flange 330: protruding head
400: sealing member

Claims (7)

A base body having an upper body provided with a fluid inlet, a lower body provided with a fluid outlet and detachably coupled to the upper body, and a fastening flange provided on at least one of the upper body and the lower body;
A guide wall provided in the base body and having an upper fluid hole and a lower fluid hole; And
An opening / closing body inserted into the inner wall of the guiding wall portion, a blocking flange provided at an upper end of the opening / closing body to block the fluid inlet, and a valve plate provided on the upper surface of the opening / closing body, And a fluid passage opening / closing part having a protruding head inserted to block the open space of the fluid inlet,
Wherein the upper fluid hole allows fluid entering through the fluid inlet to flow into the guide wall,
Wherein an inclined wall is provided on an inner wall of the upper body and the lower body, and a lower end of the inclined wall is connected to a lower end of the lower fluid hole. delete The method according to claim 1,
Wherein a float body including styrofoam is provided inside the opening / closing body. The method of claim 3,
Wherein the pressurized space portion is recessed in the upward direction on the bottom portion of the open / close body. The method according to claim 1,
Wherein the fluid passage opening / closing part is made of stainless steel or cast metal but is made of a corrosion resistant metal material. The method according to claim 1,
Wherein the fluid passage opening / closing part is made of a light metal material or a plastic material so as to be operated by the pressure of air.
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KR1020150134801A 2015-09-23 2015-09-23 Fluid back flow prevention apparatus KR101774986B1 (en)

Priority Applications (1)

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KR1020150134801A KR101774986B1 (en) 2015-09-23 2015-09-23 Fluid back flow prevention apparatus

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Application Number Priority Date Filing Date Title
KR1020150134801A KR101774986B1 (en) 2015-09-23 2015-09-23 Fluid back flow prevention apparatus

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KR20170035642A KR20170035642A (en) 2017-03-31
KR101774986B1 true KR101774986B1 (en) 2017-09-05

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102008815B1 (en) * 2019-03-12 2019-08-08 (주)단엔지니어링 Manhole structure for preventing flowing backward

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200309144Y1 (en) * 2002-10-31 2003-03-31 손열삼 Check Valve
JP2007077934A (en) * 2005-09-15 2007-03-29 Toyota Motor Corp Liquid cutoff valve and liquid cutoff structure
KR101224998B1 (en) * 2012-02-03 2013-01-22 김지용 Check valve type coupling apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10316903A1 (en) 2003-04-12 2004-10-28 Neoperl Gmbh Backflow preventer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200309144Y1 (en) * 2002-10-31 2003-03-31 손열삼 Check Valve
JP2007077934A (en) * 2005-09-15 2007-03-29 Toyota Motor Corp Liquid cutoff valve and liquid cutoff structure
KR101224998B1 (en) * 2012-02-03 2013-01-22 김지용 Check valve type coupling apparatus

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