JP3983349B2 - Liquid discharge valve with sterilizing member - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a liquid discharge valve that automatically discharges drain such as condensate and condensed liquid generated in steam, compressed air, and various gas piping systems, and in particular, can sterilize the fluid flowing into the liquid discharge valve. The present invention relates to a liquid discharge valve having a sterilizing member.
[0002]
[Prior art]
A conventional liquid discharge valve is disclosed, for example, in JP-A-3-92699. As understood from the publication, a casing for forming an inlet, a valve chamber, and an outlet by casing, providing a valve body and a valve seat in the valve chamber, and engaging the valve body in the valve seat Bacteria can be cultivated by forming an edge and not providing a region in the valve chamber that is located below the level of the sealing edge when the valve is used. By not forming a liquid reservoir in the valve chamber It is the one that minimizes sex.
[0003]
[Problems to be solved by the invention]
The conventional liquid discharge valve can suppress the cultivation of bacteria to a minimum by not forming a liquid reservoir in the valve chamber. However, the fungus generated in the valve should be sterilized for any reason. In addition to this, there is a problem that the fungi mixed in the fluid flowing into the valve cannot be sterilized or sterilized.
[0004]
Compressed air, various gases, or vapors may contain not only condensate and condensed liquid, but also fungi such as molds and fungi such as pathogens. These fungi are food, beverages, pharmaceuticals, etc. In this process, it must be removed reliably, or if the total number cannot be removed, it must be sterilized to a predetermined number or less and sterilized.
[0005]
Therefore, an object of the present invention is to minimize the fungal culture by not forming a liquid reservoir in the valve chamber, and to disinfect the fungi that have occurred, or to eliminate the fungi contained in the fluid. It is to obtain a liquid discharge valve that can also be removed.
[0006]
[Means for Solving the Problems]
The means of the present invention devised to solve the above-mentioned problems is that a fluid inlet, a valve chamber, and a liquid outlet are formed in a valve casing, and a mixed fluid of steam and condensate flowing into the valve chamber from the fluid inlet, or A fluid that preferentially discharges liquid from a compressed fluid or a mixed fluid of various gases and condensed liquid via a liquid outlet to the outside of the system. The fluid is at least one of the fluid inlet, the valve chamber, and the liquid outlet of the valve casing. forming Rutotomoni attaching a sterilizing member for sterilizing fungi contaminating, the first valve port and a second valve port which communicates the valve chamber and the liquid outlet during, rather than at the same time closing the two valve ports One valve port is a normally open valve port .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
By attaching a sterilizing member to at least one location in the valve casing, the fungi generated in the liquid discharge valve or the fungi contained in the flowing fluid are sterilized and disappear or the number Reduced to below predetermined amount.
[0008]
The sterilizing member can be formed by forming fibers treated with various sterilizing agents and antibacterial agents into a filter shape, or by applying a sterilizing paint containing sterilizing agents, sterilizing agents and antibacterial agents as components. . The sterilizing member includes not only sterilizing action but also sterilization, antibacterial action, and sterilizing action. Conventionally known disinfectants such as agents can be used depending on the target fluid and fungus species.
[0009]
The sterilizing member can be attached or applied to the inlet part of the liquid discharge valve, attached or applied in the valve chamber, or attached or applied to the outlet part. It can also be applied.
[0010]
【Example】
In this example, a steam trap that automatically discharges condensate condensed with steam in the steam piping system is used as the liquid discharge valve, and in particular, a steam trap using a float is used. An applied example is shown.
[0011]
A valve casing is formed by fixing the inlet side member 1 and the outlet side member 2 with a mounting member 3. The inlet side member 1 is formed by connecting the connecting members 5 and 6 to the inlet side casing member 4 by welding and also connecting the inlet side pipe connecting member 7 to the connecting member 5 by welding.
[0012]
Similarly, the outlet side member 2 is formed by connecting the connecting members 12 and 13 to the outlet side casing member 11 by welding, and connecting the outlet side pipe connecting member 14 to the connecting member 12 by welding. A seal member 18 for maintaining airtightness is interposed between the connecting members 6 and 13.
[0013]
A fluid inlet 19 is formed in the inlet side pipe connecting member 7, a valve chamber 20 is formed by the inlet side casing member 4 and the outlet side casing member 11, and a liquid outlet 21 is formed in the outlet side pipe connecting member 14. .
[0014]
A first valve port 22 and a second valve port 23 communicating the valve chamber 20 and the outlet 21 are formed in parallel on the connecting member 12 positioned at the lower end of the valve chamber 20. The valve areas of the first valve port 22 and the second valve port 23 are formed to be substantially the same size, and a hollow spherical shape that arbitrarily opens and closes the first valve port 22 or the second valve port 23 in the valve chamber 20. The float 24 is accommodated in a free state.
[0016]
A screen 8 that divides the valve chamber 20 into an inlet 19 side and an outlet 21 side is attached to the upper part of the float 24. The screen 8 is provided with a large number of small-diameter through holes, and a layered filter 9 is attached to the lower surface thereof, that is, the side where the float 24 is located. The filter 9 is formed by laminating a number of long sterilizing fibers. Therefore, the fluid passing through the filter 9 is sterilized by the action of the sterilizing fiber.
[0017]
The inlet side member 1, the screen 8, the float 24, and the outlet side member 2 are preferably made of stainless steel which is less likely to generate rust and has excellent corrosion resistance. Although not shown in the figure, a sterilizing paint is applied to the contact portion. By applying the sterilizing paint, the sterilization contained in the inflowing fluid or the bacteria generated in the valve chamber 20 is sterilized.
[0018]
Next, the operation of the steam trap using the float of this embodiment will be described. The state shown in FIG. 1 shows a state in which the float 24 closes the first valve port 22 and opens the second valve port 23. A mixed fluid of condensate and steam flows into the valve chamber 20, and condensate accumulates at the bottom and steam separates at the top. Since the float 24 rises in buoyancy as the liquid level rises, the condensate in the valve chamber 20 passes through the first valve port 22 and the second valve port 23 by rising and opening the first valve port 22. It is discharged from the outlet 21.
[0019]
When the liquid level in the valve chamber 20 is lowered due to the discharge of the condensate, the float 24 is lowered at the same time, and either the first valve port 22 or the second valve port 23 is arbitrarily closed. The float 24 does not close the two valve ports 22 and 23 at the same time, and one valve port is a normally open valve port. For example, when the float 24 closes the first valve port 22, the condensate flowing into the valve chamber 20 is discharged from the outlet 21 through the second valve port 23, but when the amount of condensate flowing in is large, the second valve port Since only 23 cannot be discharged, the liquid level in the valve chamber 20 rises again, the float 24 rises, and the first valve port 22 is opened.
[0020]
Since the float 24 arbitrarily opens and closes either the first valve port 22 or the second valve port 23, the frequency of opening and closing the respective valve ports 22 and 23 is halved, wear is reduced, and a long life is achieved. can do. Further, the float 24 receives a force sucked in the direction of the other valve port by the condensate flow flowing down to the other valve port when either the first valve port 22 or the second valve port 23 is closed. Therefore, there is an effect that it is easy to open when one of the valve openings is opened.
[0021]
In this embodiment, an example of a steam trap using the float 24 is shown as the liquid discharge valve. However, other well-known steam traps such as a steam trap using a temperature responsive element such as a bimetal, It can be used in the same manner in a disk-type steam trap, a bucket-type steam trap, an orifice-type steam trap, and the like. Similarly to the steam trap, it can also be used in an air trap for discharging condensed water from a compressed air piping system and various gas traps for discharging condensed liquid from a gas line.
[0022]
【The invention's effect】
According to the present invention, fungi generated in the valve and fungi mixed in the fluid can be sterilized or sterilized by the sterilizing member attached in the valve casing. Can be used in the field.
[Brief description of the drawings]
FIG. 1 is a sectional view of a steam trap using a float as a liquid discharge valve having a sterilizing member according to an embodiment of the present invention.
[Explanation of symbols]
1 Inlet side member 2 Outlet side member 3 Mounting member 8 Screen 9 Filter
19 Fluid inlet 20 Valve chamber 21 Liquid outlet 22 First valve port 23 Second valve port 24 Float

Claims (1)

The valve casing forms a fluid inlet, a valve chamber, and a liquid outlet, and the liquid outlet is formed from a mixed fluid of steam and condensate flowing into the valve chamber from the fluid inlet, or from a mixed fluid of compressed air, various gases, and condensed liquid. in which discharges the liquid to preferentially out of the system through, Rutotomoni mounting bactericidal member to sterilize the fungi are mixed in the fluid in at least one location within the fluid inlet and the valve chamber and the liquid outlet of the valve housing The first valve port and the second valve port communicating with the valve chamber and the liquid outlet are formed, and the two valve ports are not closed at the same time, and one of the valve ports is a normally open valve port. A liquid discharge valve having a sterilizing member.

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