KR19990008916U - Intake and exhaust check valve in one piece - 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. If it is installed horizontally on the top and then directly connected to the spray bogie tank at the bottom of the pneumatic tank by using the acrylic tube, the viewing efficiency is increased, and water hammer and water and water decay can be prevented. The water level indicator of the tank can be removed.

Description

Intake and exhaust check valve in one piece

The present invention relates to a monolithic intake and exhaust check valve which is constructed by combining two types of intake check valve and exhaust check valve and installed in a bogie tank of a pneumatic water supply facility.

Conventional air pressure equipment is not only complicated installation by installing two types of check valves for intake and exhaust at the upper part of bogie tank, but also intake of outside air through intake valve during intake process of bogie tank, In addition, air and water are supplied to the pressure tank through the exhaust valve to supplement the air and water.

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 that is integrated by combining two types of intake check valve and exhaust check valve. Direct connection to the spray bogie tank at the bottom of the pneumatic tank vertically using the pipe increases the bogie efficiency and prevents water hammer, scale and water decay, prolonging its life and eliminating the water level indicator in the pneumatic water tank. Can be.

1, 2 is a cross-sectional view of the operating state of the present invention,

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

Explanation of Major Symbols

1: main body 2: intake valve 2a: intake valve cover 3: spring

4: intake opening and closing door 4a, 11a: guide bar 5: 0-ring

6: Sealing valve seat 6a: Intake valve cover center hole 7: Filter

8: Cap 9, 15: Bolt 10: Valve cover 10a: Valve cover center hole

11: Exhaust Opening 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 inlet b, c: Pipe connection P: Feed pump

GL: Strainer D: Butterfly Valve PBQ: Injection Boiler

DF: Solenoid valve QS: Pressure tank 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 of the exhaust opening / closing door 14, etc.

The inside of the main body 1 is bisected into the intake chamber A and the exhaust chamber B, and the lower part is in communication with each other. Pipe fittings (b) and (C) are formed at the right side and the bottom of the exhaust chamber (B), and the right pipe fitting (b) is connected to the upper part of the pressure tank in the horizontal direction through the welding connecting pipe (13). Then, the acrylic tube (YB) is inserted into the lower tube connector (c) and fixed by using the connection nut 16 to be sealed, and then connected to the injection bore tank (PBQ) below the air pressure tank (QS) in the sealing direction.

First, the cover 2 of the intake valve, the spring 3, and the intake opening / closing door 4 are sequentially installed in the intake chamber A formed in the main body 1, and then the upper portion of the center hole 6a in the upper portion of the intake valve cover 2. The filter 7 was provided inside the several air inlets a formed in the cap and the cap 8 was covered to form an intake portion. Among them, the upper end of the intake opening / closing door 4 is a conical opening door covering the 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. By the weak elasticity of the spring 3 (approximately more elastic than the weight of the opening and closing characters) is closed up.

Then, in the exhaust chamber B of the main body 1, the blade valve seat 14 and the exhaust opening / closing door 11 are first installed, and then the exhaust valve cover 10 is inserted into the upper female threaded hole B1 of the exhaust chamber B. The exhaust part was constructed by screwing. Here, the lower part of the exhaust opening / closing door 11 is provided with a rubber packing 12 fixed using a bolt 15, and two ventilation grooves 11b are provided at both sides of the upper guide rod 11a. 11a) is inserted into the central hole 10a of the exhaust valve cover 10 so as to move up and down, and normally, the blade-type valve sheet 14 is closed down by the opening and closing of the exhaust opening and closing door 11. Finally, the bolt 9 is screwed into the upper female threaded portion of the central hole 10a of the valve cover 10 to prevent gas loss from the upper portion. If an electrical contact pressure gauge is installed instead of the bolt 9, the pressure in the water pressure tank QS can be clearly seen and controlled. If a throttle valve is installed here, the throttle valve can fill or release air to the pressure tank (QS).

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

During the period when the feed water pump (P) starts and feeds water, the solenoid valve (DF) is opened by electricity and the pressure in the T-pipe between the butterfly valve (D) and the filter (GL) in the lower part of the pressure water tank (QS) is opened. The water is injected toward the solenoid valve DF through the injection bogie tank PBG, and the water in the injection bogie tank PBG is absorbed and flows back to the upper part of the reservoir together. 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 into the intake chamber A and the exhaust chamber B, and filled with the injection viewing tank PBG via the connecting pipe c and the acrylic pipe 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.

Then, when the electricity is cut off and the solenoid valve (DF) is closed, water flows into the injection viewing tank (PBQ) and compresses the air sucked therein so that the pressure increases to the upper pressure of the pressure tank (QS). Press to open the air pressure tank (QS) to replenish the air and stop rising when the water level in the acrylic tube (YB) equals the water level in the water pressure tank (QS).

In this bogie process, the suction opening and closing door 4 is always in a closed state to prevent the air in the injection bogie tank PBQ from leaking to the outside.

If not, it affects the view volume.

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

1. The 60 ° conical intake opening and closing doors (4) and rubber openings (12) fitted with rubber O-rings (5) 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 operations, 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 monolithic 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.

4. 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. If the air pressure of the pressure tank (QS) can be clearly seen and controlled, and if a throttle valve is installed, the air can be filled or discharged through the valve.

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 hammering, decay of water and water, thereby extending its 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) to communicate with each other, the lower portion of the exhaust chamber (B) is formed on the right and lower ends of the connection port (b) and (C) The right pipe connector (b) is connected to the upper part of the water pressure tank (QS) in the horizontal direction through the welding connector (13), and the acrylic nut (YB) is inserted into the lower pipe connector (c) to connect the connection nut ( 16) After fixed and sealed, it is connected to the injection bore tank (PBQ) at the bottom of the air pressure tank (QS) in the sealing direction, and the lower cover (2) and the spring of the intake valve are formed in the intake chamber (A) formed in the main body (1). (3) and the intake opening / closing door (4) are installed in the future, and the filter (7) is installed inside several air inlets (a) formed in the upper portion of the center hole (6a) of the intake valve cover (2). ) To form an intake part, and in the exhaust chamber B of the main body 1, a blade-type valve seat 14 and an exhaust opening / closing door 11 are installed, and then into the upper female thread hole B1 of the exhaust chamber B.An intake and exhaust check valve made of a single body in which the exhaust valve cover 10 is screwed together to form an exhaust portion. The upper end of the intake opening / closing door (4) according to claim 1 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), And a check valve for intake / exhaust air, which is made to be closed 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 using a bolt 15, and two ventilation grooves 11b are provided on 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 to move up and down. Normally, the blade-type valve seat 14 is closed by closing the exhaust opening and closing door 11 and the valve is closed. An intake and exhaust check valve made of a unitary body in which a bolt (9) is screwed into the upper female threaded portion of the center hole (10a) of the lid (10) to prevent gas loss at the upper portion. The method 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. However, when the electric contact pressure gauge is turned in place of the bolt 9, The pressure can be clearly seen and controlled, and when the throttle valve is rotated and installed, 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, when the acrylic tube (YB) is inserted into the connector (c) at the bottom of the main body (1), the water level of the air pressure tank (QS) appears directly, and the conduit is inserted to connect the spray bogie tank (PBQ) to each other. Intake and exhaust check valve.