JPH058193U - Disk type steam trap - Google Patents

Abstract

(57) [Summary] [Purpose] To enable the valve disc to be opened and closed by displacing it parallel to the valve seat surface. [Structure] The float 15 is arranged in the ejection hole 7. Flow
The float 15 floats by the condensed water accumulated in the ejection hole 7, and its buoyancy acts as a force for lifting the valve disc 13. As a result, the valve disc 13 is lifted up parallel to the valve seat surfaces of the inner and outer ring valve seats 10, 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a disc type steam trap which is attached to a steam piping system and automatically discharges condensed water generated there, and in particular, the valve disc can be opened and closed by being displaced parallel to the valve seat surfaces of the inner and outer ring valve seats. About what you did.

[0002]

[Prior Art]

 In the conventional disc type steam trap, a transformer chamber is formed inside by the main body and lid, and a jet hole is opened in the center of the main unit on the transformer chamber side to connect the inlet and the transformer chamber. An annular groove is provided to form an inner ring valve seat between the injection hole and the annular groove, and an outer ring valve seat concentric with the inner ring valve seat and flush with the outer periphery of the annular groove. The variable pressure chamber is connected to the outlet by opening the valve, and a disk-shaped valve disc that is seated on and away from the valve seat surface consisting of the inner ring valve seat and the outer ring valve seat is arranged in the variable pressure chamber. The valve disc is automatically controlled by the pressure change in the pressure changing chamber to be seated on and off the valve seat surface, and the condensate is automatically discharged.

[0003]

[Problems to be solved by the present invention]

 In the disc type steam trap described above, since the annular groove and the outlet communicate with each other through a single discharge hole located outside the ejection hole, the annular groove passes through the lower surface of the valve disc and passes through the annular groove. Of the exhaust flow flowing out from the discharge hole to the discharge hole, the flow velocity at the portion of the valve disc facing directly above the discharge hole is higher than the others, and the valve disc is attracted to the discharge hole side and opens and closes in an inclined state. There is a problem that the discharge hole side of the valve disc and valve seat is worn out.

Therefore, a technical problem of the present invention is to enable the valve disc to be displaced parallel to the valve seat surfaces of the inner and outer ring valve seats so as to be opened and closed.

[0005]

[Means for Solving the Problems] The technical means of the present invention taken to solve the above technical problems is to form a transformer chamber inside with a main body and a lid, and to center the transformer chamber side of the main body. An injection hole is opened in the inlet to connect the inlet and the variable pressure chamber, and an annular groove is provided around the outside of the injection hole. A circle that forms an outer ring valve seat on the same plane, opens a single discharge hole from the annular groove to connect the variable pressure chamber to the outlet, and separates from the valve seat surface consisting of the inner ring valve seat and the outer ring valve seat. A plate-shaped valve disc is placed in the variable pressure chamber, but a float is placed in the ejection hole.

[0006]

[Action]

 The operation of the above technical means is as follows. The float placed in the jet hole floats on the condensate accumulated in the jet hole, and the buoyancy acts as a force to lift the valve disc. Therefore, when the valve disc is opened, the buoyancy of this float cancels the force that tilts the valve disc due to the suction action of the discharged fluid, so that the valve disc moves against the valve seat surface of the inner and outer ring valve seats. It can be displaced in parallel and opened and closed.

[0007]

【Example】

 A specific example of the above technical means will be described (see FIG. 1). The lid 2 is screwed to the main body 1 to form the transformation chamber 3 inside. An inlet 5 and an outlet 6 are formed in the main body 1 on substantially the same axis.

An injection hole 7 is opened in the center of the main body 1 to connect the inlet 5 and the variable pressure chamber 3. An annular groove 9 is provided on the outer periphery of the ejection hole 7, an annular inner ring valve seat 10 is formed between the ejection hole 7 and the annular groove 9, and an annular outer ring valve seat 11 is formed on the outer periphery of the annular groove 9. The inner ring valve seat 10 and the outer ring valve seat 11 are concentric and are formed on the upper surfaces thereof in the same plane. A single discharge hole 12 is opened from the annular groove 9 to connect the variable pressure chamber 3 and the outlet 6.

A disk-shaped valve disc 13 is arranged in the variable pressure chamber 3 so as to be seated on and off the inner and outer ring valve seats 10 and 11 at the same time. A rod 15 having a rod shape and three guide blades 14 formed on the outer periphery is arranged in the ejection hole 7. The float 15 floats on the condensate accumulated in the ejection hole 7 and acts to lift the valve disc 13. This buoyancy cancels the force of tilting the valve disc 13 due to the suction action of the discharge fluid when the valve disc 13 is open. As a result, the valve disc 13 is displaced in parallel with the valve seat surfaces of the inner and outer ring valve seats 10 and 11 to open and close.

[0010]

[Effect of the device]

 The present invention has the following unique effects. As described above, according to the present invention, since the valve disc is displaced parallel to the valve seat surface to open and close, uneven wear does not occur and good initial performance can be maintained for a long period of time. In addition, the displacement of the valve disc parallel to the valve seat surface increases the discharge flow rate.

[Brief description of drawings]

FIG. 1 is a sectional view of a disk type steam trap according to an embodiment of the present invention.

[Explanation of symbols]

 1 Main body 2 Lid body 3 Transformer chamber 5 Inlet 6 Outlet 9 Annular groove 10 Inner ring valve seat 11 Outer ring valve seat 12 Discharge hole 13 Valve disc 15 Float

Claims (1)

[Claims for utility model registration] [Claim 1] A transformer chamber is formed inside the main body and the lid,
An injection hole is opened in the center of the main body on the variable pressure chamber side so that the inlet and the variable pressure chamber communicate with each other.An annular groove is provided around the outer periphery of the injection hole. An outer ring valve seat, which is concentric with the inner ring valve seat and is flush with the inner ring seat, is formed, and a single discharge hole is opened from the annular groove to connect the variable pressure chamber to the outlet. A disc-type steam trap with a disc-shaped valve disc that is seated in and out of the variable pressure chamber, with a float in the ejection hole.