KR100262911B1 - Integrally formed automatic flute check valve - Google Patents

Abstract

PURPOSE: An integral type automatic float check valve is provided to minimize a volume of a valve by processing and forming components and a connecting tube of the valve inside a stainless annular rod and to enhance durability. CONSTITUTION: In a middle part of an annular rod, a float valve is processed and between the middle part and the lower part, a teflon seat is inserted and assembled with bolt.As fluid is flowed in a float valve(22) along a tube, a float(221) lifts up by a floating force to shut off a connecting port of the float valve to stop the inflow of fluid. The float valve is stopped by the float(221), then negative pressure of a vacuum chamber(21) increases until balancing with a weight of a balance(231) embedded in a gravity valve(23). As negative pressure of the chamber increases more, the balance weight(231) moves in a vertical direction to open an air inflow hole(234) under atmospheric pressure. Solution in the float valve(22) moves down a sample vessel(3) for being returned. And the float(221) in the float valve in a cylindrical form is grooved for having an emboss to easily discharge solution in the bottom of the float. Size of the float is decided according to a specific gravity of the solution and density of float texture.

Description

Integrally formed automatic flute check valve

The present invention relates to an integrally formed automatic flute check valve, by using a built-in interaction of the flute and the gravimetric weight (gravity weight), a highly toxic or radioactive solution in the form of a liquid container or process piping The present invention relates to an automatic flute check valve installed on one side of an automatic liquid sample collection device using an air-ejector to remotely collect a sample from the air.

In general, a device for collecting liquid samples having high toxicity or high level radioactivity is installed in a shielded or enclosed space and operated remotely. Therefore, if you use equipment with a lot of driving parts such as pumps in these devices, maintenance of these equipment can be time-consuming and generate a lot of contaminated waste when problems such as equipment failure and solution leakage occur. Workers are likely to be exposed to these materials.

Therefore, the sampling device should be able to guarantee simple and durable with minimum driving part, and should be easy to maintain and operate. In addition, the use of an automatic sampling device with an air ejector for the purpose of continuously sampling and analyzing for a long time at regular time intervals is becoming a general trend.

The basic configuration of the sampling device using the air ejector is composed of an air ejector, a flute check valve, a sample container, and a sample storage container as shown in FIG. When compressed air is supplied to the air-ejector to collect a certain amount of sample into the sample container of the sampling device, negative pressure is formed in the device and the solution flows from the storage container into the sample container through the inlet pipe. The solution introduced into the sample container is introduced into the ejector if the negative pressure is continuously maintained in the device, so that the solution diffuses out of the device together with the compressed air, causing serious environmental pollution along with the loss of the solution, clogging the ejector.

In order to solve this problem, when the flute check valve is installed in front of the ejector, the solution is automatically blocked from flowing into the ejector, and at the same time, the atmospheric air is introduced through the air inlet to extinguish the negative pressure of the flute valve and the sample container. When the negative pressure disappears as described above, the sample solution introduced into the flute valve and the sample container by a predetermined amount or more is returned to the storage container through the sample inlet tube by gravity, and the remaining sample solution is stored in the sample container.

However, in the conventional flute check valve, as shown in FIG. The tube used a stainless tube or polyethylene tube depending on the characteristics of the solution. And in the center of the support to form a hole 42 to pass through the connection pipe, the connection of the components and the connection was used a nipple (nipple) type screw.

As such, the main parts of the flute check valve were manufactured and assembled to a support, and the flute check valve connected between the valves with a connection pipe had a problem in that the volume was large and the connection pipe was exposed to the outside of the valve. In other words, when the size of the valve is increased, a large amount of space is handled when handling toxic substances such as radioactive materials in a limited closed space, and it is inconvenient to maintain the valve by remote operation.

In addition, the connection tube made of polyethylene exposed to the outside has various problems such as hardening due to radiolysis or solvent vapor due to radioactivity, resulting in problems in durability of the device.

The present invention has been made in consideration of the above problems, and its object is to form and integrally process and form the valve parts and connecting pipes inside the stainless round bar, thereby minimizing the volume of the valve and improving the durability. It is to provide an automatic flute check valve.

The present invention separates the round bar into an upper end and a stop and a lower end, and processes a baumum chamber, a gravitational valve, a separation port and a connection pipe in a stop in contact with the upper end, and flutes in a stop in contact with the lower end. While processing the valve, put the Teflon seat between the upper part and the stop part, and the stop part and the lower part and assemble it with bolts. When handling the corrosive and toxic solution, connect the vacuum chamber and the gravity valve with U-shaped tube. It provides an automatic flute check valve that is integrally formed to control the internal space of the gravity valve and to control the internal space of the gravity valve by using a spring and adjusting screw when handling a solution that has low or no corrosiveness and toxicity. .

1 is a schematic diagram of a sampling device for explaining a flute check valve.

2 is an assembly view of a conventional flute check valve.

3 is a detailed view of a conventional gravity valve.

4 is a plan view and side view of an integrated flute check valve according to the present invention.

5 is a plan view and a side view of another integrated flute check valve according to the present invention.

* Explanation of symbols for main parts of the drawings

1: air-ejector 2: flute check valve

3: sample container 5: U-shaped tube

6: sample storage container 21: vacuum chamber (vacuum chamber)

22: float valve 23: gravity valve

24: separation pot

51: hole 52: O-ring

53: bolt 100: round bar top

200: round bar stop

211,212,213,214,222,223,232,233: connector

215: groove 221: flute

231: weight 234: air intake

239: adjusting screw 300: round bar lower end

238: spring a: air pressure regulating valve

b, c: Air-actuator valve for control of compressed air supply

d: Air-actuator valve for solution drain

FIG. 1 shows a schematic diagram of a sampling device for explaining the flute check valve, which includes a plurality of valves for controlling the air-ejector 1, the flute check valve 2, the sample container 3, and the device operation. It consists of (a, b, c).

The sampling device includes one air pressure regulating valve 3, air-actuator valves b and c for controlling compressed air supply, and an air-actuator valve d for discharging the solution. In particular, the flute check valve 2 is composed of a vaccum chamber 21, a flute valve 22, a gravity valve 23, and a separation port 24.

The pressure regulating valve (a) is a valve for supplying constant compressed air to the apparatus, the air-etuator valve (7) for controlling the compressed air supply is a valve for controlling the compressed air supplied to the air-ejector, and another compression The air-etuator valve c for air supply control is a compressed air control valve for discharging the solution by gravity and discharging the trace amount of solution that may remain in the rest of the apparatus. In addition, the air-actuator valve (d) for discharging the solution is a valve for discharging the solution of the sample container, the pressure regulating valve (a), the air-actuator valves (b, c) for controlling the compressed air supply and the air-actuator for discharging the solution The valve d can be operated manually or automatically using a PLC controller.

When the sampling device supplies compressed air to the air-ejector 1, a negative pressure is formed in the device so that the solution flows from the sample storage container to the sample container 3 through the solution inlet tube 31, and then the flute check valve ( 2) flows into. The introduced solution raises the flute 221 embedded in the flute valve 2 by buoyancy to block the pipe connected to the vaccum chamber 21 to stop the inflow of the solution. As the flute valve 22 is blocked by the flute 221 in this way, the internal pressure of the vaccum chamber 21 and the gravity valve 23 is increased. At this time, the gravitational valve 23 connected to the vaccum chamber 21 and the flute valve 22 is blocking the air inlet 234 that can supply the atmosphere into the apparatus by using the built-in weight 231. When the internal pressure in the apparatus increases, the weight 231 of the gravitational valve 23 rises due to the negative pressure, and the air inlet 234 is opened. In addition, the air is sucked through the side connector 222 of the flute valve 22 connected to the gravity valve 23, and the negative pressure of the flute valve 22 disappears, so that the solution introduced into the flute valve 22 is transferred to the sample container 3. It is returned to the sample storage container (6) through the). If the sample container (3) is connected directly without installing the flute check valve in front of the air ejector (1) for sampling, the solution flows into the air ejector (1) and the ejector is clogged or the device is compressed. Diffuse out and cause serious environmental pollution with loss of solution. Therefore, the flute check valve has an important function in the automatic sampling system using the air ejector.

4 is a plan view and a side view of the integrated flute check valve according to the present invention, which is usefully used to handle highly toxic or corrosive solutions, and the main parts of the valve and the connection pipe can be manufactured by processing a stainless round rod. It was separated into three parts, the upper part 100, the stopping part 200 and the lower part 300 so as to be large.

That is, the upper part 100 was cut to process the vaccum chamber 21, the gravity valve 23, the separation port 24, and the connection pipe at the stop part 200, and the lower part 300 is the stop part. The flute valve 22 was cut to 200 for processing. Then, a Teflon sheet was inserted between the upper, middle, and lower ends 100, 200, and 300, and assembled with bolts.

The baumum chamber 21 is connected to the air-ejector 1 to form a negative pressure in the device, is connected to the air-ejector 1 through the connector 211, the lower end is connected by the connector 214 It is connected to the flute valve 22, the connector 212 in the upper left of the chamber is connected to the gravity valve 23. Further, another connector 213 formed at the top is connected to the air-actuator valve c for controlling the compressed air supply.

If the air-ejector 1 forms an unstable negative pressure, the negative pressure in the device becomes unstable, and the movement of the weight 231 embedded in the gravity valve 23 becomes unstable, affecting the height of the head. Therefore, by installing a chamber to maintain a constant negative pressure it is possible to accurately adjust the weight 231 built in the gravity valve 23 without malfunction. Then, a small amount of the solution that can pass through the flute valve 22 is separated by gas-liquid to block the flow into the air-ejector 1, and the compressed air is supplied to the compressed air through the air-actuator valve c for controlling the compressed air supply. Force the solution remaining in the device to drain. In order to enlarge the volume of the chamber, the inner side of the round bar was processed as much as possible regardless of the shape, but the bottom part was processed into a cone type to facilitate the discharge of the solution.

The flute valve 22 is to block the inflow of the solution by the flute 221, the valve upper connector is connected to the connector 214 of the bottom of the chamber chamber, the connector 222 of the valve side is gas-liquid separation The cylindrical separation port 24 having a function is connected to the connector 233 at the bottom of the gravity valve, and the connector 223 at the bottom is connected to the sample container.

When the flute valve 22 flows into the flute valve 22 along the pipe connected with the solution passing through the sample container, the flute 221 rises vertically by buoyancy and the flute valve 22 connected to the vaccum chamber 21. Blocking the top end stops the flow of solution. When the flute valve 22 is blocked by the flute 221, the negative pressure of the vaccum chamber 21 is increased, until the balance of the weight of the weight 231 embedded in the gravity valve 23 is balanced. The negative pressure of 21 is increased. When the negative pressure of the chamber is further increased, the weight 231 embedded in the gravitational valve 23 moves in the vertical direction to open the air inlet 234 at atmospheric pressure, so that the solution in the flute valve 22 is discharged from the sample container ( 3) to reflux. In addition, the flute 221 embedded in the flute valve 22 has a cylindrical shape so that a groove is formed to easily discharge the solution at the lower end of the flute so that the flute 221 is determined according to the specific gravity of the solution and the density of the flute material. do.

The gravitational valve 23 is to control the internal space by using the U-tube (5), it is very useful when handling toxic solutions, such as corrosive or radioactive material. The upper connector 232 of the gravity valve 23 is connected to the connector 212 of the upper left of the chamber chamber, the lower connector 233 is connected to the connector 222 on the side of the flute valve, An air inlet 234 for supplying air at atmospheric pressure is formed, and the air inlet 234 is opened and closed by a built-in weight 231.

Since the weight of the weight 231 embedded in the gravity valve 23 changes as the weight changes, the internal space is adjusted using the U-shaped tube 5 made of a stainless steel tube. That is, in order to support and seal the U-tube 5 vertically, a hole 51 is formed in the round bar upper end 100, and two 0-rings 52 are inserted into the hole 51, and then the bolt 53 is closed. Tighten to adjust the internal space that the weight 231 in the gravity valve 23 can be moved vertically.

The U-shaped tube 5 is one side is inserted into the gravity valve 23, the other side is inserted into the vaccum chamber 21, when inserted into the vaccum chamber 21, the U-shaped tube 5 is a solution In order to prevent the direct exposure to the vaccum chamber 21, the groove 215 is separately processed on one side and the upper part of the chamber and the groove 215 are connected.

That is, the groove 215 is formed separately on one side of the chamber, and the upper portion is connected to the upper portion of the chamber.

5 is a plan view and a side view of another integrated flute check valve according to the present invention, which is a valve useful when handling a material having low or no corrosiveness or toxicity, and having a high corrosion resistance stainless steel spring 238 and an adjustment screw. By installing the 239, the weight change of the weight 231 and the internal space of the gravity valve 23 can be easily, simply and variously adjusted by the elasticity of the spring and the adjustment screw.

In this way, the conventional float check valve is manufactured separately from the main parts of the valve and assembled using a support, so that the butch of the device is relatively increased, the present invention is a volume by directly processing the main parts of the valve inside the round bar It is very convenient to handle the device in a limited space, and it is very useful because the volume of the valve is minimized and lightweight when remotely handled in a confined space to handle toxic and corrosive materials such as radioactive materials. .

In addition, the existing valve is coupled to the main parts of the valve by using the support, so the connection pipe connecting the parts are exposed to the outside to cause radioactive curing (radiolysis) or hardening phenomenon by the solvent vapor, the durability of the valve Although there was a problem, the present invention improved the durability of the valve by processing the connecting pipe directly inside the round bar, and simplified the appearance of the valve.

In addition, the conventional valve changes the weight of the weight corresponding to the pressure difference as much as the head difference, and adjusted the internal space of the gravitational valve using the adjustment screw, the present invention uses the U-tube to the internal space of the gravitational valve The valve's volume is minimized because it replaces the connector connecting to the valve and the valve to adjust the volume.

In addition, when the corrosion and toxicity of the solution to be handled is weak or absent, instead of using the weight to change the weight of the weight built into the gravity valve, the spring and the adjustment screw can be used to adjust the height of the head simply and variously. There are so many effects.

Claims (6)

Separate the round bar into the upper part, the stop part and the lower part, and process the vaccum chamber, the gravitational valve, the separation port and the connection part in the stop part which is in contact with the upper part, and the flute valve in the stop part which is in contact with the bottom part. At the same time, the automatic flute check valve formed integrally characterized in that the Teflon sheet is inserted between the upper end and the stop and the stop and the lower end and assembled with bolts. The method of claim 1; The top of the chamber chamber is connected to the air-ejector and the compressed air control valve by a connector, and the lower portion formed in the cone type is connected to the flute valve to facilitate the discharge of the solution, and a separate groove is formed at one side of the chamber. An integrally formed automatic flute check valve, characterized in that the connection portion is formed in the upper portion of the groove connected to the gravity valve. The method of claim 1; The upper portion of the flute valve is connected to the connector at the bottom of the vaccum chamber, and the connector formed at one side is connected to the connector at the bottom of the gravity valve with a cylindrical separation port having a gas-liquid separation function therebetween. An integrally formed automatic flute check valve characterized in that the flow of the solution is blocked by the flute. The method of claim 1; The gravity valve has an upper portion connected to the groove of the vaccum valve, the lower portion connected to the flute valve with the cylindrical separation port interposed therebetween, and at the same time the atmospheric pressure is sucked by the air inlet formed on one side, An automatic flute check valve formed in one piece, characterized in that the air inlet is opened and closed by a weight. The method of claim 1; The Vaccum chamber and the Gravity Valve are each connected by a U-tube inserted into two holes vertically sealed into two holes formed at one end of the round bar by a 0-ring and a bolt when handling a highly corrosive and toxic solution. Integrally formed automatic flute check valve, characterized in that connected to each other, the inner space of the gravitational valve is controlled by the U-tube. The method of claim 1; The gravitational valve is an integrally formed automatic flute check valve, characterized in that the weight and weight of the weight and the internal space easily handled by using a spring and adjusting screw when handling a solution that is less corrosive and less toxic.

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