JP2711609B2 - Disc type steam trap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk type steam trap for automatically discharging condensate generated in a steam piping system, and more particularly to a valve disk which cannot be closed due to abrasion of a valve disk or adhesion of a scale or other foreign matter. Even those that can be reused.

[0002]

2. Description of the Related Art Conventional disk type steam traps are:
An inner and outer ring valve in which a valve seat member forming a variable pressure chamber is disposed between a valve casing and a valve casing having an inlet and an outlet, and the inlet and the outlet communicate with an opening end of the valve seat member on the side of the variable pressure chamber. A valve seat is formed in the variable pressure chamber, and a valve disk that is separated from and seated on the valve seat surface of the inner and outer ring valve seats is arranged in the variable pressure chamber. The condensate is automatically discharged by taking off and sitting on the surface.

[0003]

DISCLOSURE OF THE INVENTION Since the valve disk of the disk-type steam trap is impacted on and off the valve seat surface of the inner and outer ring valve seats, it wears out in a relatively short time, and the scale in the fluid is reduced. -There is a problem that foreign matter such as metal sticks and cannot be closed. If the valve disc is worn or foreign matter adheres, the valve casing is disassembled and the valve disc is replaced.However, it is uneconomical to dispose of it only once and it is not economical. It had to be disassembled, which took time and effort. The technical problem of the present invention is therefore to provide a disk-type steam trap which can be reused without disassembly even if the valve disk cannot be closed due to wear or foreign matter adhesion.

[0004]

In order to solve the above-mentioned technical problem, the technical solution of the present invention is to provide a variable pressure chamber between a valve casing having an inlet and an outlet. A spherical valve seat member is formed, and a valve seat surface comprising an inner and outer ring valve seats with which an inlet and an outlet communicate with each other is formed on the variable pressure chamber side opening end of the spherical valve seat member. The valve disc to be detached and seated is disposed in the variable pressure chamber, the polishing member is attached to the spherical valve seat member, and the valve shaft for rotating the valve seat surface formed of the inner and outer ring valve seats or the polishing member to a position facing the valve disc is a spherical valve seat. The valve casing is provided with a rotating member which is connected to the member, and which rotates the valve disk while making contact with the polishing member.

[0005]

The operation of the above technical means is as follows.
When the valve disk cannot be closed due to wear or foreign matter, first, the valve shaft connected to the spherical valve seat member is operated to rotate the polishing member attached to the spherical valve seat member to a position facing the valve disk. Next, the rotating member attached to the valve case is operated to bring the valve disk into contact with the polishing member and to rotate the valve disk, thereby polishing the valve disk.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment showing a specific example of the above technical means will be described (see FIGS. 1 and 2). A lid 2 and a lid 3 are screwed to the main body 1 to form a valve casing. An inlet 4 and an outlet 5 are formed on the main body 1 on the same axis. The spherical valve seat member 6 is disposed in a substantially cylindrical space formed in the valve casing. Annular seal members 7 and 8 are arranged on the inlet 4 side and the outlet 5 side of the spherical valve seat member 6, and a variable pressure chamber 10 is formed between the spherical valve seat member 6 and the lids 2 and 3.

An inflow hole 11 is formed in the spherical valve seat member 6 to communicate the inlet 4 with the variable pressure chamber 10. An annular groove 12 is provided around the inflow hole 11, and the variable pressure chamber 10 communicates with the outlet 5 through the annular groove 12 and the outflow hole 13. An inner ring valve seat 14 is formed between the inflow hole 11 and the annular groove 12, and an outer ring valve seat 15 is formed outside the annular groove 12. The inner ring valve seat 14 and the outer ring valve seat 15 are concentric and their upper surfaces form a flush valve seat surface. A valve disc 16 is disposed in the variable pressure chamber 10 to be seated on the inner ring valve seat 14 and the outer ring valve seat 15 to open and close the inflow hole 11 and the annular groove 12 and to communicate or block the inlet 4 and the outlet 5.

A recess is formed in the spherical valve seat member 6 on the side opposite to the portion where the inner and outer ring valve seats 14 and 15 are formed, and a grindstone 24 as a polishing member is attached with an adhesive. The rotating member 25 is disposed through the lid 2. The rotating member 25 is rotatably held by a holder 26 screwed to the lid 2. A rotating operation handle 27 is attached to the rotating member 25, and a nut 28 prevents the handle from coming off. The rotating member 25 is urged upward by a spring 29 disposed between the holder 26 and the handle 27. The lower end of the rotating member 25 fits into a concave portion 30 formed on the upper surface of the valve disk 16 so that the valve disk 16 can be rotated.

A grindstone 17 as a polishing member for the valve seat surfaces of the inner and outer ring valve seats 14 and 15 is arranged between the lid 3 and the spherical valve seat member 6. A rotating member 18 for rotating the polishing members 17 for the valve seat surfaces of the inner and outer ring valve seats 14 and 15 is disposed through the lid 3, and is fixed to the polishing members 17 via the connecting members 19. The rotating member 18 is rotatably held by a holder 20 screwed to the lid 3. A rotating handle 21 is attached to the rotating member 18, and a nut 22 prevents the handle from slipping out.
The rotating member 18 is urged downward by a spring 23 disposed between the holder 20 and the handle 21.

[0010] As shown in FIG.
1 is provided, and the valve shaft 32 penetrating the main body 1 is engaged.
The valve shaft 32 is fixed to the main body 1 with the holder 33 screwed to the main body 1.
To be rotatable. A handle 34 is attached to the valve shaft 32 so that the spherical valve seat member 6 can be rotated from the outside.

If the valve disc 16 cannot be closed due to wear or foreign matter, first, as shown in FIG.
Then, the polishing member 24 is rotated by 0 degrees so that the polishing member 24 faces the valve disk 16. Next, the handle 27 is pushed against the spring 29 so that the lower end of the rotating member 25 is
Then, the handle 27 is operated to rotate the rotating member 25, thereby polishing the workpiece. When polishing the valve seat surfaces of the inner and outer ring valve seats 14 and 15 in the same manner, the inner and outer ring valve seats 1
The inner and outer ring valve seats 14 are provided on the polishing members 17 for the valve seat surfaces 4 and 15.
15 with the valve seat surfaces facing each other, the handle 21 is pushed in against the spring 23 to bring the abrasive member 17 into contact with the spherical valve seat member 6, and the handle 21 is operated to rotate the rotating member 18
To rotate.

[0012]

The present invention has the following specific effects. As described above, according to the present invention, by operating the valve shaft and the rotating member, the valve disk can be polished again without disassembling the valve casing, and the disk disk can be reused. -You can get a mud trap.

[Brief description of the drawings]

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

FIG. 2 is a central longitudinal sectional view of FIG. 1 showing a state in which the spherical valve seat member of FIG. 1 is being rotated by 180 degrees and polished.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2, 3 Lid 4 Inlet 5 Outlet 6 Spherical valve seat member 10 Transformation chamber 14 Inner ring valve seat 15 Outer ring valve seat 16 Valve disk 24 Polishing member 25 Rotating member 32 Valve shaft

Claims (1)

(57) [Claims] A spherical valve seat member forming a variable pressure chamber between a valve casing and a valve casing having an inlet and an outlet is disposed at an opening end of the spherical valve seat member on the variable pressure chamber side. Forming a valve seat surface composed of an inner and outer ring valve seat with which the outlet communicates, disposing a valve disc which is detached and seated on the valve seat surface of the inner and outer ring valve seat in the variable pressure chamber;
A polishing member is attached to the spherical valve seat member, and a valve seat surface comprising inner and outer ring valve seats or a valve shaft for rotating the polishing member to a position facing the valve disk is connected to the spherical valve seat member, and the valve disk is brought into contact with the polishing member. A disk-type steam trap with a rotating member that contacts and rotates, attached to the valve casing.