KR200168396Y1 - Check valve - Google Patents

Abstract

The present invention has a single intake and exhaust check valve composed of an intake portion composed of an intake valve cover, a spring, an intake opening and closing door, a filter, a cap, and an exhaust portion consisting of a bolt, an exhaust valve cover, and an exhaust opening and closing door. Directly connecting the acrylic tube vertically to the spray bogie tank at the bottom of the pneumatic water tank by installing it horizontally on the upper side improves the viewing efficiency and prevents water hammer, scale and water decay. The indicator and the like can be eliminated.

Description

Intake and exhaust check valve in one piece

The present invention relates to a monolithic intake and exhaust check valve that is used by installing an intake check valve and an exhaust check valve integrally with a bogie tank of a pneumatic water supply facility.

Conventional air pressure equipment is equipped with two types of check valves for intake and exhaust, respectively, on the upper part of the bogie tank, which not only makes the installation complicated, but also exhausts the valve during the intake of outside air through the intake valve during the intake process of the bogie tank. The air and water are supplied to the pressure tank through the air and water to supplement.

This approach first requires high precision, high sealability and reliability of the top check valve. Otherwise, it will have a significant impact on viewing efficiency and even lose its effectiveness. However, it is very difficult to manufacture a check valve that is commonly used to meet the above requirements.

Then, the method of replenishing air and water through the exhaust valve has a problem of shortening the life of the valve is easy to occur water hammer, scale and water.

In order to solve various problems in the related art, the present invention constitutes a unitary intake and exhaust check valve integrated by combining an intake check valve and an exhaust check valve, and is installed horizontally on an upper portion of the pneumatic water tank, using an acrylic tube. By connecting directly to the spray bogie tank in the lower part of the pneumatic tank vertically, the bogie efficiency is increased and water hammering action can be prevented, which can prevent the decay of scale and water, thereby prolonging its life and eliminating the water level indicator of the pneumatic water tank.

1 and 2 are cross-sectional views of the operating state of the present invention.

3 is an exemplary embodiment of the use state of the present invention.

<Explanation of symbols for main parts of drawing>

1: main body 2: intake valve

2a: Intake valve cover 3: Spring

4: intake opening and closing door 4a, 11a: guide rod

5: O-ring 6: sealing valve seat

6a: center hole of intake valve cover 7: filter

8: cap 9, 15: bolt

10: valve cover 10a: valve cover center hole

11: Exhaust opening and closing door 11b: Ventilation groove

12: rubber packing 13: connector

14: valve seat 16: connection nut

A: intake chamber B: exhaust chamber

B1: Female thread hole a: Air intake port

b, c: Pipe connection P: Feed water pump

GL: Filter D: Butterfly Valve

PBQ: Injection tank DF: Solenoid valve

QS: Barrel Bath YB: Acrylic Tube

HX: Single piece intake and exhaust check valve

Referring to the present invention by the accompanying drawings as follows.

An intake portion, a bolt (9), an exhaust valve cover (10) composed of an intake valve cover (2), a spring (3), an intake opening / closing door (4), a filter (7), a cap (8), etc. It is an exhaust part comprised from the exhaust opening / closing door 14, etc.

The inside of the main body 1 is formed to be bisected into the intake chamber A and the exhaust chamber B so that the lower part is in communication with each other, and the right and the lower ends of the exhaust chamber B are provided with the connection ports b and C. Is formed, the right pipe connector (b) is connected to the upper pressure tank in the horizontal direction through the welding connector (13). Then, the acrylic plate (YB) is inserted into the lower end connector (c) and fixed by using the connection nut 16 to be sealed, and then connected to the injection viewing tank (PBQ) below the air pressure tank (QS) in the sealing direction.

In the intake chamber (A) formed in the main body (1), the cover (2) of the intake valve, the spring (3), and the intake opening / closing door (4) are installed in this order, and then in the upper part of the center hole (6a) above the intake valve cover (2). The filter 7 was provided inside the several formed air intake openings a, and the cap 8 was covered and the intake part was comprised. Here, the upper end of the intake opening / closing door 4 becomes a conical opening door covered with a rubber 0-ring 5, and the lower guide rod 4a is inserted into the center hole 2a of the intake valve cover 2 to move up and down. , The spring 3 is closed up slightly by elasticity (approximately more elastic than the weight of the opening and closing character).

Then, the blade valve seat 14 and the exhaust opening and closing door 11 are installed in the exhaust chamber B of the main body 1, and then the exhaust valve cover 10 is screwed into the upper female threaded hole B1 of the exhaust chamber B. The exhaust part was assembled by assembly. Here, the lower part of the exhaust opening and closing door 11 is provided with a rubber packing 12 fixed by the bolt 15, and there are two ventilation grooves 11b on both sides of the guide rod 11a, and the guide rod ( 11a) is inserted into the center hole 10a of the exhaust valve cover 10 to move up and down, and normally, the blade-type valve seat 14 is closed downward by the weight of the exhaust opening / closing door 11. Then, the bolt 9 is screwed into the upper female threaded portion of the central hole 10a of the valve cover 10 to prevent the gas loss from the upper portion. Here, by installing an electrical contact pressure gauge (not shown) in place of this bolt (9), it is possible to clearly see the pressure of the air pressure tank (QS) so that the pressure can be controlled, which is shown in the throttle valve drawing. If not installed, the air can be filled or discharged through the throttle valve to the air pressure tank (QS).

Next, the operation of the present invention in combination with FIG. 3 will be described.

During the period when the water feed pump (P) starts and feeds water, the solenoid valve (DF) is opened through electricity, and the pressure water in the T tube between the butterfly valve (D) and the filter (GL) in the lower part of the pressure water tank (QS) is opened. Is sprayed toward the solenoid valve (DF) through the injection viewing tank (PBG) and absorbs the water in the injection viewing tank (PBG) and flows back together to the top of the reservoir. Therefore, a vacuum is generated in the acrylic tube (YB) and the intake / exhaust check valve (breathing valve) (HX) in one unit, and the external air passes through the air inlet (a) of the intake / exhaust check valve (HX) in one unit. The intake opening / closing door 4 is opened to be absorbed to the intake chamber A and the exhaust chamber B, and filled in the injection viewing tank PBG via the connecting pipe c and the acrylic plate YB.

The upper air pressure of the air pressure tank QS during the absorption process prevents backflow of the compressed air in the injection viewing tank PBQ as the exhaust opening and closing door 11 is completely closed.

If not, it has a significant influence on the air intake amount of the PBQ.

When the solenoid valve (DF) closes when the electricity is cut off, water flows into the injection viewing tank (PBQ) and compresses the air sucked into the exhaust bore (11) when the pressure rises to the upper pressure of the pressure tank (QS). ), Pressurize the pressurized water tank (QS) to replenish the air, and stop rising when the water level in the acrylic tube (YB) is equal to the air pressure tank (QS) water level.

The suction opening and closing door 4 during the bogie process prevents the air in the injection bogie tank PBQ from leaking out.

If not, it affects the view volume.

The present invention described above comprehensively has the following technical effects.

1. The 60 degree conical intake opening and closing door 4 with rubber 0-ring 5 and the exhaust opening and closing door 11 with rubber packing 12 close their valve seats 6 and 14, respectively. It greatly improves the precision, sealing and reliability of the door.

In this way, this proposal can maintain a very high gas sealability after hundreds of thousands of opening and closing processes, and the viewing efficiency volume is more than 95%.

2. Since a single intake and exhaust check valve (breathing valve) (HX) is installed horizontally up to the top of the pressure water tank (QS), there is almost no contact with water, causing water hammering, water and water decay. As a result, the service life of the unitary intake and exhaust check valve (breathing valve) (HX) has been greatly extended.

3. The exhaust opening and closing door 11, as well as the conventional intake opening and closing door 4, have high reverse sealing properties but little forward sealing of gas flow. Therefore, when this unit is adopted as a single intake and exhaust check valve (breathing valve) (HX), the following two effects occur.

1) Even when the pressure of the water pressure tank (QS) and the outlet pressure of the water supply pump (P) are completely at equilibrium, the above-described examples are continuously carried out so that there are no restrictions on the two pressure differences.

2) When the air replenishment stops, the highest water level raised in the acrylic tube (YB) is the same as the water tank (QS) level, and this pipe acts as the water level indicator of the water tank (QS). no need.

3) The ventilation openings 11b formed on both sides of the guide rod 11a of the exhaust opening and closing door 11 not only increase the accuracy of the exhaust opening and closing door 11, but also install an electric contact pressure gauge at the place where the bolt 9 is installed. The pressure of the water pressure tank (QS) can be clearly seen and controlled. If a throttle valve is installed, the air can be filled or discharged through the water pressure tank (QS).

In summary, the present invention has high precision and high sealability, and is installed horizontally with the upper part of the air pressure tank (QS) to prevent water hammer, scale and water decay, thereby extending the service life. The lower acrylic tube (YB) has the advantage of acting as a water level indicator of the water pressure tank (QS), and can be used in all gravity viewing methods.

Case of action: The coefficients of the single-piece intake and exhaust check valve (HX) -15 are as follows.

Body Size 98 X 50 X 70mm

Nominal Diameter Φ15mm

Test strength pressure Ps = 3.0MPa

The monolithic intake and exhaust check valve (HX) is used on all BYG series miniaturization plants and has a volumetric efficiency of more than 95%.

Claims (5)

The inside of the main body 1 is formed bilaterally by the intake chamber A and the exhaust chamber B so that the lower part is in communication with each other, and at the rear side and the lower end of the exhaust chamber B, the connection ports b and C are provided. In the formed intake chamber A formed in the main body 1, the lower cover 2 of the intake valve 2, the spring 3, and the intake opening / closing door 4 are sequentially installed, and the center of the intake valve cover 2 is provided. The filter 7 is installed inside the several air inlets a formed in the upper part of the hole 6a, and then the cap 8 is covered to form an intake portion, and the blade inside the exhaust chamber B of the main body 1. After installing the type valve seat 14 and the exhaust opening / closing door 11, the exhaust valve cover 10 is screwed into the female threaded hole B1 in the upper part of the exhaust chamber B to form an exhaust part. . 2. The inlet opening and closing door (4) according to claim 1, wherein the upper end of the intake opening and closing door (4) is a conical opening and closing door covered with a rubber 0-ring (5), and the lower guide rod (4a) is inserted into the center hole (2a) of the intake valve cover (2). A single-body intake and exhaust check valve, which moves up and down and is closed upward by the elasticity of the spring (3). The lower part of the exhaust opening and closing door 11 is provided with a rubber packing 12 fixed with a bolt 15, and two ventilation grooves 11b are provided at both sides of the upper guide rod 11a. The guide rod 11a is inserted into the center hole 10a of the exhaust valve cover 10 so as to move up and down, and normally the blade valve seat 14 is closed by the weight of the exhaust opening and closing door 11. And a bolt assembly (9) in the upper female threaded portion of the center hole (10a) of the valve cover (10) to prevent gas loss at the upper portion. The air pressure tank (QS) according to claim 1, wherein the bolt 9 is tightened to the upper female threaded hole of the center valve 10a of the exhaust valve cover 10, and the electric contact pressure gauge is turned instead of the bolt 9. It is possible to clearly see and control the pressure of the unit, and when the throttle valve is installed by installing it, it is a unitary intake and exhaust check valve that allows air to be filled or discharged through the throttle valve. According to claim 1, wherein the lower end of the main body (1) when the acrylic tube (YB) is inserted into the connector (c) to bring the water level of the air pressure tank (QS) directly, and the conduit is inserted to connect with the injection viewing tank (PBQ) Intake and exhaust check valve in one piece.