KR101118501B1 - Foam proportioner - Google Patents

Abstract

PURPOSE: A foam proportioner is provided to supply foaming agent at a fixed rate regardless of the flux variation of water. CONSTITUTION: A foam proportioner comprises a bottom body(100), an intermediate body(200), an upper body(300), a shaft(400), a resistant plate(500), an elastic body(600), a pressure control disk(700), and a foaming agent supply tube(800). In the bottom body, a water inlet is formed in the central part thereof and a forming agent outlet is formed on the upper part thereof. The intermediate body is combined with the upper part of the bottom body. The upper body comprises a first cylinder part and a second cylinder part. The elastic body provides restoring force.

Description

Precision Form Multiplier for Proportional Control {FOAM PROPORTIONER}

The present invention relates to a precision foam multiplier for proportional control for mixing water and gunpowder in a constant ratio in a saturation system provided for fire suppression.

Fire extinguishing systems are used for handling flammable and flammable liquid hazards. This saturation system suppresses fires by mixing and foaming water and foam in appropriate proportions.

In order to mix and foam water and foam at a constant rate, a foam multiplier capable of supplying and mixing the foam may be required in proportion to the flow rate of water.

Foam multiplier usually uses 2%, 3%, 6%, 2%, 3%, 6% means the mixing ratio of water and foam, for example 2% foam multiplier is used in 98% water It is set to mix 2%.

For effective fire suppression, the mixing ratio of water and gunpowder must be maintained as established. In other words, the supply amount of the spraying agent should be able to be adjusted immediately and quickly according to the flow rate introduced.

As a related art related to the present invention, a "proportional control fluid mixer" of Korean Patent No. 10-0765692 (registered on October 02, 2007) is known.

1 is a partially cutaway perspective view of a proportional control fluid mixer according to the prior art.

As shown, the proportional control fluid mixer of the prior art includes a body portion, a connection portion, a mixing portion, a resistance plate, a working rod, and an elastic member.

In the prior art, a diaphragm is installed inside the mixing unit to mix the fluid and the mixed fluid according to the pressure of the fluid supplied from the auxiliary fluid supply pipe. However, in the prior art, when there is an unexpected change in the flow rate of the fluid, there is a problem in that it is impossible to precisely control the supply amount of the mixed fluid.

For example, when the flow rate is reduced, the pressure of the mixed fluid already supplied to the mixing part does not decompress in response to the change in flow rate, so that there is a problem in that the ratio of the fluid and the mixed fluid cannot be adjusted.

In addition, in the case of the prior art because the operating rod 50 is a structure that can be rotated if the operating rod is unexpectedly rotated out of position, the pressure receiving member 51 does not touch the pressure transfer member 41 of the resistance plate 40 There is a problem that can become inoperable state.

If the operating rod is not installed properly or is out of position, if a fire occurs, the spooling equipment will not operate properly and only water will be sprayed to stop the fire.

1. Republic of Korea Patent No. 10-0765692 (2007.10.02 registration)

Therefore, the present invention is to provide a proportional control precision foam multiplier to more aggressively cope with the change in the flow rate of water so that the foaming agent can always be supplied at a constant rate.

And the present invention is to provide a proportional control precision foam multiplier to connect the shaft and the resistance plate in a link structure so that the resistance plate and the shaft can be interlocked under any circumstances to provide a stable supply of foaming agent do.

Precision foam multiplier for proportional control of the present invention for achieving the problem as described is a foam multiplier for mixing the water and the foaming agent in an appropriate ratio, the water inlet is formed in the center, the foaming agent outlet above the water inlet Is formed, the lower body is formed with a shaft hole from the top so as to communicate with the gunpowder outlet and the water inlet, the secondary inlet is formed in communication with the water inlet on one side; An intermediate body coupled to an upper portion of the lower body such that an inner flow path is in communication with the discharge agent outlet, wherein an inner diameter reduction part is formed in the inner flow path; An upper body connected to an upper end of the intermediate body and having a first cylinder part connected to the auxiliary inlet port and an auxiliary pipe, and having a second cylinder part opened to an upper side with a reduced inner diameter than the first cylinder part; A lower end penetrating the shaft hole and being positioned at the water inlet, and an upper cone part fitted to the inner diameter reducing part; A resistance plate connected to a lower end of the shaft to block the water inlet and to be opened when water is introduced; An elastic body inserted into the intermediate body to partially enclose the shaft and providing a restoring force such that the shaft can be raised when the resistance plate is opened and closed; A pressure regulating disk provided in the first cylinder to spatially divide the first cylinder into a hydraulic pressure forming chamber and a chemical pressure forming chamber; Is inserted into the second cylinder portion, the hollow tube shape and the lower end is connected to the pressure control disk and communicate with the drug pressure forming chamber, when the water flows into the water pressure forming chamber through the auxiliary pipe is supplied to the foaming agent It is characterized in that it comprises a supply pipe for supplying a; can be supplied in proportion to the amount of water flowing into the water inlet.

And in the present invention, the pressure adjusting disk is characterized in that at least one pressure adjusting hole is opened in the vertical direction so that the pressure of the drug pressure forming chamber can be adjusted.

The precision foam multiplier for proportional control of the present invention has an effect of more precisely controlling the supply amount of the foaming agent according to the flow rate change because the pressure in the chemical pressure forming chamber is effectively reduced even when the flow rate changes.

In addition, since the shaft and the resistance plate are always connected in a link structure, the resistance plate and the shaft can be interlocked under any circumstances to supply the gunpowder in proportion to the flow rate, thereby increasing the reliability of the saturation system.

1 is a partial cutaway perspective view of a fluid mixer for proportional control according to the prior art;
2 is a cross-sectional view of a precision foam multiplier for proportional control according to an embodiment of the present invention.
3 is a left side view of FIG. 2;
4 is an operational state diagram of the precision form multiplier for proportional control of FIG.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Whenever a component is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements, not the exclusion of any other element, unless the context clearly dictates otherwise.

2 is a cross-sectional view of a precision form multiplier for proportional control according to an exemplary embodiment of the present invention, FIG. 3 is a left side view of FIG. 2, and FIG. 4 is an operation state diagram of the precision form multiplier for proportional control of FIG. 2.

Precision form multiplier for proportional control according to an embodiment of the present invention, the lower body 100, the intermediate body 200, the upper body 300, the shaft 400, the resistance plate 500, the elastic body 600, the pressure control disk ( 700), and includes a foam supply pipe (800).

And the precision foam multiplier for proportional control of the present invention can be applied to the saturation system of the ship, the water may be used sea water or fresh water.

A water inlet 110 penetrates to the left and right in the center of the lower body 100 is formed, the auxiliary inlet 120 is formed to communicate with the water inlet 110 on one side. The auxiliary inlet 120 is connected to the auxiliary pipe 130 to supply water to the first cylinder 310 of the upper body 300 to be described later.

The gunpowder outlet 140 is formed above the water inlet 110 in the flow direction of water, and the shaft hole 150 is formed from the top to communicate with the gunpowder outlet 140 and the water inlet 110.

The intermediate body 200 is connected upright to the upper portion of the lower body 100, the intermediate body 200 is formed in the form of a tube having an inner flow path 220 is opened up and down, the inner flow path 220 is a foam outlet 140 In communication with the inner diameter reduction portion 210 is formed in the inner passage (220).

In the present embodiment, the intermediate body 200 is to be coupled to the first intermediate body 200a and the second intermediate body 200b, and a ring-shaped inner diameter reducing portion at the boundary between the first intermediate body 200a and the second intermediate body 200b. 210 is provided.

The upper body 300 is connected to the upper end of the intermediate body 200, and the upper body 300 is opened upward and downward, and includes a lower first cylinder part 310 and an upper second cylinder part 320. The second cylinder part 320 is formed to have an inner diameter smaller than that of the first cylinder part 310.

An auxiliary pipe 130 is coupled to one side of the first cylinder 310 to allow water to be supplied into the first cylinder 310. Although not shown on the upper side of the upper body 300, the foaming pipe (not shown) is coupled.

The shaft 400 is provided inside the intermediate body 200, and the lower end of the shaft 400 passes through the shaft hole 150 and is positioned at the water inlet 110. The upper end of the shaft 400 has an outer diameter toward the upper portion thereof. Consists of a reduced cone portion 410 is fitted to the inner diameter reducing portion 210.

The resistance plate 500 is connected to the lower end of the shaft 400 reaching the water inlet 110 through the shaft hole 150 through the link 420. The resistance plate 500 blocks the water inlet 110 in the form of a disc and opens when water is introduced.

Basically, the resistance plate 500 is connected to the lower body 100 by a hinge 510 so as to be rotatable, and is connected to the shaft 400 by two links 420. As shown in FIG. 4, when water is supplied to the water inlet 110, the resistance plate 500 is opened by the resistance of the water, and the shaft 400 connected to the link 420 is pulled downward.

An elastic body 600 partially wrapped around the shaft 400 is provided inside the intermediate body 200, and an upper end of the elastic body 600 is connected to the shaft 400 so that the elastic body 600 is compressed when the shaft 400 is lowered. do. When the resistance plate 500 is opened, the shaft 400 is lowered and the elastic body 600 is compressed. When the resistance plate 500 is closed, the elastic body 600 provides a restoring force for the shaft 400 to rise smoothly. Done.

When the resistance plate 500 is closed, the cone part 410 of the shaft 400 is fitted to the inner diameter reducing part 210 to block the inner diameter reducing part 210, but water is supplied to the water inlet 110 so that the resistance is reduced. When the plate 500 is opened, the shaft 400 is lowered, so that the cone portion 410 is pulled out of the inner diameter reducing portion 210 to be discharged downward.

The first cylinder part 310 of the upper body 300 is provided with a pressure regulating disk 700 for dividing the first cylinder part 310 into a hydraulic pressure forming chamber (A) and a chemical pressure forming chamber (B).

As shown in the drawing, the first cylinder part 310 is spatially divided by the pressure regulating disk 700, and the upper side becomes the hydraulic pressure forming chamber A and the lower side becomes the chemical pressure forming chamber B. The auxiliary pipe 130 connected to the first cylinder 310 is connected to the pressure forming chamber (A) so that water can be supplied to the pressure forming chamber (A).

And the supply pipe 800 in the form of a hollow tube is inserted into the second cylinder 320.

The lower end of the foam supply pipe 800 is connected to the pressure regulating disk 700, for this purpose, the center of the pressure regulating disk 700 is opened, and the lower end of the foam supply pipe 800 is fitted into the opening to be combined with the pressure. The formation chamber B and the foaming supply pipe 800 form a structure in communication with each other.

The drug supply pipe 800 and the pressure regulating disk 700 can be moved up and down in a constrained state, and when the drug supply pipe 800 is located at the top dead center, the top of the drug supply pipe 800 is a stopper ( It is in close contact with S) and the foaming agent is in a state that cannot be introduced into the foaming supply pipe 800.

The stopper (S) may be part of the foam transport pipe (not shown), or may be a component of the upper body (300).

When water is supplied through the water inlet 110, a part of the water flows along the auxiliary pipe 130 through the auxiliary inlet 120 and is supplied to the pressure forming chamber A of the first cylinder part 310. The resistance plate 500 is opened at the same time as the supply of water, and the resistance plate 500 is rotated and opened in proportion to the flow rate of the water. At this time, the shaft 400 connected to the resistance plate 500 is lowered by the link 420. The cone portion 410 blocking the inner diameter reducing portion 210 is lowered to a state in which the foaming agent may be discharged.

In addition, the pressure regulating disk 700 is lowered by the pressure of the water introduced into the hydraulic pressure forming chamber A at the same time as the resistance plate 500 and the shaft 400 move, and the pressure regulating disk 700 and the constraint supply pipe 800 is also lowered.

Since the amount of water supplied to the pressure forming chamber (A) is supplied in proportion to the flow rate of the water entering the water inlet 110 to generate water pressure, the foaming supply pipe 800 together with the pressure regulating disk 700 is lowered by a predetermined distance. At this time, the stopper (S) is opened while the gunpowder is introduced through the gunpowder supply pipe 800 is supplied to the drug pressure forming chamber (B).

The foaming agent entering the chemical pressure forming chamber (B) is discharged through the inner diameter reducing unit 210 since the inner diameter reducing unit 210 is opened, and finally discharged through the foaming outlet 140.

When the foaming supply pipe 800 is opened and a large amount of foaming agent is introduced into the chemical pressure forming chamber B, a difference may occur between the pressure of the chemical pressure forming chamber B and the pressure of the hydraulic pressure forming chamber A. That is, when too much foaming agent is introduced into the chemical pressure forming chamber (B), if the pressure of the chemical pressure forming chamber (B) is higher than the pressure of the hydraulic pressure forming chamber (A), the pressure control disk 700 and the foaming supply pipe ( 800 is raised by a predetermined distance to reduce the inflow of the gunpowder through the gunpowder supply pipe (800). By this operation, the pressure in the chemical pressure forming chamber B is reduced to a certain degree to prevent too much foaming agent from flowing into the inner diameter reducing unit 210.

In particular, the proportional control precision foam multiplier according to the embodiment of the present invention is provided with means for more actively controlling the excessive pressure in the drug pressure forming chamber (B).

One or more pressure adjusting holes 710 are opened in the pressure adjusting disk 700 in the vertical direction. Pressure control hole 710 is connected to the pressure-forming chamber (A) and the drug pressure forming chamber (B), if the pressure in the drug pressure forming chamber (B) is excessively high through the pressure control hole 710 Moves to the pressure-forming chamber A. FIG.

When there is no pressure adjusting hole 710, the pressure in the chemical pressure forming chamber (B) is excessively higher than the pressure in the hydraulic pressure forming chamber (A) pressure control disk 700 and the foam supply pipe 800 is also relatively fast Will rise. When the moving speed of the pressure regulating disk 700 is too fast, it is impossible to accurately discharge the foaming agent in proportion to the flow rate of water.

Therefore, in the present invention, at least one pressure adjusting hole 710 is formed so that the pressure in the drug pressure forming chamber B is naturally reduced in pressure so that the pressure adjusting disk 700 and the foaming supply pipe 800 can be moved slowly.

The precision foam multiplier for proportional control according to the present invention as described above is operated to increase or decrease the supply amount of the foaming agent according to the flow rate of water, and in particular, when the flow rate of the water is changed, the hydraulic pressure forming chamber (A) and the chemical pressure forming chamber (B). By reducing the pressure difference of), by appropriately adjusting the moving speed of the pressure regulating disk 700 and the foam supply pipe 800, the supply amount of the foaming agent can be more precisely controlled.

And the precision form multiplier for proportional control of the present invention has the advantage that there is little possibility of malfunction because the axis 400 and the resistance plate 500 is always connected. That is, when a fire is detected and water is supplied to the water inlet 110, the shaft 400 is immediately lowered and the foaming supply pipe 800 is also lowered, and the foaming agent is supplied to discharge the foaming agent proportional to the flow rate. Will be able to suppress.

In addition, a plurality of pressure adjusting holes 710 formed in the pressure adjusting disk 700 may be formed, and the diameter of the pressure adjusting holes 710 may also be variously formed according to the capacity of the foam multiplier to enable more precise control. Can be.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be.

It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

The precision form multiplier for proportional control of the present invention can be applied to a saturation system provided in a ship or the like.

100: lower body 110: water inlet
120: auxiliary inlet 130: auxiliary pipe
140: gunpowder outlet 150: shaft hole
200: intermediate 210: inner diameter reducing portion
200a: first intermediate body 200b: second intermediate body
300: upper body 310: first cylinder portion
320: second cylinder portion A: hydraulic pressure forming chamber
B: chemical pressure forming chamber 400: shaft
410: cone part 420: link
500: resistance plate 600: elastic body
700: pressure adjusting disk 710: pressure adjusting hole
800: gunpowder supply pipe S: stopper

Claims (2)

As a foam multiplier for mixing water and foaming agent in proper ratio,
A water inlet is formed in a central portion, a foaming outlet is formed above the water inlet, and a shaft hole is formed from an upper portion so as to communicate with the foaming outlet and the water inlet, and an auxiliary inlet communicating with the water inlet on one side. The lower body is formed;
An intermediate body coupled to an upper portion of the lower body such that an inner flow path is in communication with the discharge agent outlet, wherein an inner diameter reduction part is formed in the inner flow path;
An upper body connected to an upper end of the intermediate body and having a first cylinder part connected to the auxiliary inlet port and an auxiliary pipe, and having a second cylinder part opened to an upper side with a reduced inner diameter than the first cylinder part;
A lower end penetrating the shaft hole and being positioned at the water inlet, and an upper cone part fitted to the inner diameter reducing part;
A resistance plate connected to a lower end of the shaft to block the water inlet and to be opened when water is introduced;
An elastic body inserted into the intermediate body to partially enclose the shaft and providing a restoring force such that the shaft can be raised when the resistance plate is opened and closed;
A pressure regulating disk provided in the first cylinder to spatially divide the first cylinder into a hydraulic pressure forming chamber and a chemical pressure forming chamber;
Is inserted into the second cylinder portion, the hollow tube shape and the lower end is connected to the pressure control disk and communicate with the drug pressure forming chamber, when the water flows into the water pressure forming chamber through the auxiliary pipe is supplied to the foaming agent A precision foam multiplier for proportional control, comprising: a foaming supply pipe configured to be supplied to the foaming agent in proportion to the amount of water introduced into the water inlet. The method of claim 1,
The pressure control disk,
Precision form multiplier for proportional control, characterized in that the at least one pressure adjustment hole opening in the vertical direction is formed so that the pressure of the drug pressure forming chamber can be adjusted.

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