JPH0632530Y2 - Sanitary-Automatic degassing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of Invention] (Field of Industrial Application) The present invention relates to a sanitary automatic degassing device.

(Prior Art) In sanitary piping, especially in lines such as beer and carbonated drinking water, gas in the liquid separates during liquid feeding, and the liquid amount becomes unstable before final filling. Therefore, usually the fifth
As shown in the figure, a gas venting device A called an air venting sight glass is connected in the middle of a pipe B so that gas can be vented at appropriate times through the pipe B. This air bleeding site is operated by the operator visually observing the inside to monitor the gas generation state, judging the gas generation amount from the change in the liquid level, and adjusting the opening of the valve C accordingly to perform the gas bleeding. It is something that will be done.

(Problems to be solved by the invention) However, since the valve C itself is very difficult to adjust based on the above-mentioned visual observation, and the portion with the highest degassing effect in the pipe is a high place, the above gas Making the removal operation more difficult.

On the other hand, there is an air vent D as shown in FIG. 6 as a device that can automatically perform this degassing. However, when this is used, it is almost impossible to clean the valve portion E, and it is used in sanitary piping. That is unsuitable.

The present invention has been made in order to improve the above-mentioned problems of the prior art, and automatically detects a liquid level change and automatically opens and closes the gas vent valve in response to the detection result. In this way, it is possible to provide a sanitary automatic degassing device that does not require liquid level monitoring by the operator and can be installed at a high place most suitable for degassing and is easy to clean.

[Effect of device]

(Means for Solving the Problems) In order to achieve the above object, the degassing device according to the present invention is provided with a degassing container which is branched and connected in the middle of the pipe and which allows the inside to be seen through, and this container. An upper limit detector that detects the upper limit of the liquid level in the container, a lower limit detector that detects the same lower limit, and a upper limit detector that is connected to the upper part of the degassing container and is fully opened by the detection signal of the lower limit detector. A gas vent valve that is fully closed by a signal, and the gas vent valve has a valve rod in the valve body that is lowered by a detection signal of the lower limit detector, and the valve rod has a lower surface on the lower surface side of the flange portion. It is characterized in that a seal ring that closes and closes the valve is loosely fitted to the lower edge of the opening in the valve body of the gas discharge passage formed in the valve body.

(Operation) With the above configuration, when gas accumulates in the gas vent container and the liquid level in the container drops to a certain position due to the gas pressure, the lower limit detector detects the liquid level and opens the gas vent valve. Then, when gas is released and the liquid level rises to a certain position, the upper limit detector detects the rise of the liquid level and closes the gas vent valve to prevent the outflow of the liquid.

(Embodiment) The present invention will be described below with reference to an embodiment shown in FIGS. 1 to 4.

In the degassing container 1, a tubular body 5 made of a material such as glass that allows the inside to be seen through is interposed between a lower housing 3 and a lid 4 which are inserted in the middle of a pipe 2, and packings 6 and 6 are provided at upper and lower portions. Then, a gas vent valve 8 is connected to the lid 4 so as to communicate with the inside of the container 1.

In this embodiment, the float 9 is used as a means for detecting the liquid level in the container 8. That is, the lid 4
A guide rod 10 is vertically provided on the inner surface of the, and a float 9 made of, for example, stainless steel is vertically slidably inserted into the guide rod 10, and the float 9 is detected by an upper limit detector 11 and a lower limit detector 12. The upper and lower limits of the liquid level in the degassing container 1 are detected by. Proximity switches can be used as the detectors 11 and 12. Also, without using the float 9,
A level switch that directly detects the liquid level may be used.

A baffle plate 13 made of punching metal or the like is provided in the pipe 2 at a portion to which the lower housing 3 of the degassing container 1 is connected in order to promote separation of gas and liquid. Alternatively, if the lower housing 3 is connected to the bent portion of the pipe 2, a turbulent flow is generated in the liquid flow at the bent portion so that gas separability is generated, so that the baffle plate 13 is not necessarily provided. Good.

The degassing valve 8 is shown in FIG. The gas vent valve 8 shown here is opened and closed by using pressurized air, and the valve rod 16 is inserted in the sliding portion 15 in the valve body 14 through the O-ring 17 so as to be slidable in the axial direction. A piston 18 is fixed to the upper end portion of the valve rod 16 by a nut 19, and the piston 18 is provided in a cylinder portion 20 above the valve body 14 with a seal ring 21.
It is inserted so that it can slide closely through the
Is urged in the direction of pushing the valve rod 16 (valve closing direction). A pressure air supply port 23 is provided in the lower part of the cylinder portion 20, and an exhaust port 24 is provided in the upper part thereof. The pressure air supply port 23 is a pressure air supply source 25 as shown in the first illustration.
Connected to the upper and lower limit detector 1 in the middle of the pipe.
An electromagnetic switching valve 26 that is operated by the detection signals 1 and 12 is provided.

A gas discharge passage 27 is provided in the side of the sliding portion 15 near the lower end of the valve rod 16 in a direction orthogonal to the sliding portion 15, and the opening of the discharge passage 27 inside the sliding portion 15 is formed. The lower edge 28 is a valve seat.

On the other hand, there is a collar portion 29 near the lower end of the valve rod 16, and a seal ring 30 made of Teflon, metal or the like is loosely fitted to the lower side of the collar portion 29, and when the valve rod 16 descends. The seal ring 30 is pressed against the lower edge 28 of the opening 27A of the discharge passage 27 and the flange 29 to close the opening 27A of the discharge passage 27. A plurality of grooves 31, 31, ... Are formed on the side surface of the lower end of the valve rod 16 as shown in the cross section in FIG.
When the valve 6 is pulled up, the discharge passage 27 and the degassing container 1 side communicate with each other through these grooves 31, 31 ...

The electromagnetic switching valve 26 shuts off the pressure air pipe 32 by a detection signal when the upper limit detector 11 detects the liquid level, and disconnects the pressure air pipe 32 by a detection signal when the lower limit detector 12 detects the liquid level. Electrically connected to open.

Next, the operation of the above embodiment will be described.

When the amount of gas in the liquid flowing through the line pipe 2 increases, the gas is separated from the liquid by the baffle plate 13 (or the bent portion) and flows into the degassing container 1 when flowing through the connection portion with the degassing container 1. As the amount of gas increases, the liquid level in the degassing container 1 drops due to the gas pressure. The float 9 descends with the lowering of the liquid level, and when the float 9 reaches the level of the lower limit, the lower limit detector 12 detects and operates the electromagnetic switching valve 26 by the detection signal, and the cylinder portion in the valve body 14 is detected. Pressure air from the pressure air supply source 25 is supplied to the lower chamber of 20 to push up the piston 18 against the spring 22, thereby pulling up the valve rod 16. As the valve rod 16 rises, the collar portion 29 at the lower end thereof rises,
The pressurization of the seal ring 30 is released, the opening 27A of the discharge passage 27 is opened, and the gas in the degassing container 1 is released from the valve rod 1
.. are discharged or collected through the discharge passage 27.

As the liquid level in the degassing container 1 rises due to degassing, the float 9 rises, and when this reaches the upper limit, the upper limit detector 11 detects and the electromagnetic switching valve 26 is detected by the detection signal.
Is actuated, the supply of pressure air to the lower side of the piston 18 is cut off, the piston 18 is pushed up by the force of the spring 22, the valve rod 16 descends, and the seal ring 30 releases the discharge passage 27.
It is pressed against the lower edge 28 of the opening 27A to block the release of gas, and the valve is closed.

If the inside of the gas vent valve 8 becomes dirty and the valve closed state becomes uncertain, the valve rod 16 may be maintained in the open state and pressurized fluid may be injected from the side of the gas vent container 1 to release the valve. Stick 16
The lower surface of the collar portion 29, the peripheral surface of the seal ring 30, and the opening portion 27A of the discharge passage 27 are all washed, and the adhered substances can be discharged through the discharge passage 27 to be washed all at once.

In the illustrated embodiment, the actuating means of the valve rod 16 is based on pressure air, but this may be an electromagnetic valve structure actuated by an electromagnet, and other configurations are also limited to the illustrated embodiment. Of course not.

[Effect of device]

As described above, the sanitary automatic degassing apparatus according to the present invention detects the upper limit of the liquid level inside the degassing container that is branched and connected in the middle of the pipe to allow the inside to be seen through and the container. With an upper limit detector, a lower limit detector that detects the same lower limit, and a gas vent valve that is connected to the upper part of the gas vent container and is fully opened by the detection signal of the lower limit detector and fully closed by the detection signal of the upper limit detector. Since it is configured, it is possible to automatically discharge the gas in the liquid flowing in the pipe, and the manual work by visual observation is unnecessary, and as a result,
Since it can be provided in a high-place pipe most suitable for degassing, degassing can be effectively performed. When cleaning the gas vent valve, the seal ring is loosely fitted to the lower surface of the flange of the valve stem, so not only the lower surface of the flange but also the entire circumference of the seal ring and the opening of the discharge passage can be cleaned.
It is possible to eliminate the remaining deposits.

[Brief description of drawings]

FIG. 1 is a front view with a half section showing an embodiment of an automatic sanitary degassing apparatus according to the present invention, and FIG. 2 is a front view with a half section of the degassing valve shown in FIG. 2 is an explanatory view showing a part of the lower end portion of the valve rod in FIG. 2, FIG. 4 is a sectional view of a portion corresponding to line IV-IV in FIG. 3, and FIG. 5 is a half portion of a conventional sanitary degassing device. And FIG. 6 is a sectional view showing a conventional air vent. 1 ... Venting container, 2 ... Piping, 3 ... Lower housing, 4
... Lid, 5 ... Cylindrical, 8 ... Gas vent valve, 9 ... Float, 10 ... Guide rod, 11 ... Upper limit detector, 1
2 ... Lower limit detector, 13 ... Baffle plate, 14 ... Valve body,
15 ... sliding part, 16 ... valve rod, 18 ... piston, 2
0 ... Cylinder part, 22 ... Compression spring, 23 ... Pressure air supply port, 24 ... Exhaust port, 25 ... Pressure air supply source,
26 ... Electromagnetic switching valve, 27 ... Gas discharge passage, 28 ...
Lower edge, 29 ... Collar part, 30 ... Seal ring, 31 ...
… Grooves, 32… Pressure air piping.

Claims (3)

[Scope of utility model registration request] 1. A degassing container, which is branched and connected in the middle of the pipe to allow the inside to be seen through, an upper limit detector attached to this container for detecting the upper limit of the liquid level in the container, and the same lower limit. Lower limit detector and connected to the upper part of the degassing container,
A gas vent valve that is fully opened by the detection signal of the lower limit detector and fully closed by the detection signal of the upper limit detector, and the gas vent valve is a valve rod that is lowered in the valve body by the detection signal of the lower limit detector. And a seal ring for closing the valve in close contact with the lower edge of the opening in the valve body of the gas discharge passage formed in the valve body is loosely fitted to the lower surface of the flange portion of the valve rod. Sanitary automatic degassing device. 2. A utility model registration characterized in that the upper and lower limit detectors are composed of a float that floats following the liquid level in the degassing container, and a proximity switch that detects this float. The sanitary automatic degassing device according to claim 1. 3. The sanitary automatic degassing device according to claim 1, wherein the upper and lower limit detectors are level switches.