JPS5854300A - Disk type steam trap - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a disc-shaped steam horn for discharging condensate generated in steam systems such as steam piping and steam-using equipment. Concerning valve opening means.

As a prior art related to the present invention, Japanese Patent Application Laid-Open No. 5/1-773
There is a disclosure in the 27th bulletin. This b is of MA construction as follows. An annular groove is formed around the outside of the outer ring. The bottom wall of the annular groove forms a conical slope with a slope toward the inner diameter. A bimetal ring formed by bending a plate-shaped bimetal into a cylindrical shape is placed in the annular groove. The upper end of the bimetal ring contacts the valve disk via the retaining ring.

A ring-shaped member made of a wear-resistant material is fixed around the entire circumference of one or both ends of the pile ring. When the temperature is low, the diameter of the bimetal ring decreases, and when the temperature is low, the diameter of the bimetal ring decreases, and when the temperature is high, the diameter expands and moves down along the annular slope toward the opposite valve disk. so that it separates from the valve disc.

The disc steam trap with this structure has the following problems. The bimetal ring undergoes deformation such that its diameter expands or contracts in response to changes in temperature.

The deformation force at this time becomes the force that lifts the valve disk and opens the valve. The ring-shaped member of wear-resistant material fixed to the bimetallic ring is generally rigid and difficult to deform. As the bimetal ring deforms, this ring-shaped member also deforms, but the deformation force of the bimetal ring is used to deform this member, and the operating force of the valve disc is reduced.

The technical problem of the present invention is to reduce the resistance during deformation of a bimetal ring to which a wear-resistant member is attached.

The present invention consists of the following configuration. An annular groove is formed in the area facing the valve disk, such as around the outer circumference of the outer ring and between the outer ring seats. An annular inclined surface is formed on the bottom wall of the annular groove. A bimetal ring, which is formed by bending a plate-shaped bimetal into a ring shape, is placed in the annular groove.

A plurality of shoe members having a narrow width and made of a wear-resistant material are attached to the bimetal ring in the vertical direction at points that contact the annular inclined surface so as to contact the annular inclined surface.

The bimetal ring deforms by expanding or contracting in diameter according to temperature changes, and when it is low temperature it ascends the annular slope through the shoe part and holds the valve disk, and when it is high temperature it ascends the annular shape through the shoe part and holds the valve disc. Move the slope down and away from the valve disc.

The effects of the configuration of the present invention will be explained. The shoe member is attached (pull) in the axial direction of the bimetal ring so that it does not get in the way when the bimetal ring deforms.

Therefore, the deforming force of the bimetallic ring effectively acts as an operating force of the valve disk.

The bimetal ring slides on the annular inclined surface through the wear-resistant shoe part, which prevents wear of the bimetal ring itself.

Next, the present invention will be explained based on illustrated embodiments.

FIG. 6 shows a disk-type steam trap to which the present invention is applied. First, let's explain from this figure. The trap housing is formed of a main body 1 and a lid 3 screwed onto the upper part of the main body 1 via a gasket 2. A variable pressure chamber having an inlet 4 and an outlet 5 is formed inside the casing. The openings of the inlet 4 and the outlet 5 on the side of the variable voltage chamber 6 are concentric and are defined by an inner ring 7 and an outer ring 8 which have double inner and outer rings. A bimetal ring 12 is provided in a variable pressure chamber 6, which is made by bending a valve day metal into a cylindrical shape to allow dust to be deposited on the inner and outer rings 7 and 8 at the same time, so that the diameter contracts at low temperatures and expands at high temperatures. A bimetal ring 12 is placed within the annular groove 10. The upper end of the bimetal ring 12 is brought into contact with the valve disk 9 via the retaining ring 13.

Next, the first and second embodiments will be described.

However, since this is applied to the trap shown in FIG. 6, common parts are given the same reference numerals and explanations will be omitted. The bimetal ring 14 disposed within the annular groove 10 has a plurality of pairs of upper and lower holes 15 and 16 equally spaced in the axial direction. The shoe member 17 is made of martenrite or ferritic stainless steel wire material that is hardened and has improved wear resistance. This member 17 has an end portion of 31.3
2 is bent inward and formed to fit into the holes 15 and 16, and then subjected to the above-mentioned hardening process. The diameter of this member 17 increases one by one from the end of the bimetal ring 14, and the lower end of the bimetal ring 14 has an annular inclined surface 1.
1 and away from the valve disc 9. The diameter of the lower L bimetal link 14 is reduced, and the bimetal ring 1
4 has a culm along an annular inclined surface 11 and a valve disc 9
・Lift up and forcibly open the valve. This bimetal ring 1
During the deformation of the ring 14, the shoe member 17 is attached in the axial direction of the ring 14 and has a narrow width, so that it does not interfere with the deformation of the ring 14 and does not weaken the deformation force. The bimetal ring 14 contacts the annular inclined surface 11 via the shoe member 17, and does not wear out. Since the reuse member 17 is vertically symmetrical and can be used even if it is turned upside down, assembly is facilitated. By attaching the shoe member 17 to the inner and outer circumferences of the bimetal ring 14, a gap is created between the side wall of the outer ring seat 8 and the housing, allowing fluid to flow. It is possible to prevent the bimetal ring 14 from becoming unable to deform due to rusting due to close contact with the peripheral wall of the ring 8 or the inner wall of the casing.

Next, embodiments will be explained with reference to FIGS. 3 and 4. This embodiment is also applied to the trap shown in FIG. 6, and common parts are denoted by the same reference numerals and description thereof will be omitted. however,
In this embodiment, the bimetal ring is contracted and tilted toward the valve disk along the annular inclined surface. The shoe member 19 has one end inserted into the hole 18 of the bimetal ring 14'.
Fold it outward so that it goes through. The other end of the shoe member 19 extends downward from the inside of the bimetal ring 14', passes through the lower end of the bimetal ring 14', and is bent outward. The annular inclined surface 11' forms an annular stepped portion 41 on its upper portion which holds the bimetal ring 14'. FIG. 4a shows the part where the shoe member 19 of the bimetal ring 11 is removed (-, t4:J).

The bimetal ring 14' is provided with grooves 20 at the sides of the equally divided holes 18 and at the lower end corresponding to the holes 18. Series member 1
9 is removed so that it fits into the hole 18 and ifJ 20 as shown in Figure 4.

In this embodiment, the shoe member 19 fits into the hole 18 and the groove 20, so that no displacement occurs even though the shoe member 19 moves in the circumferential direction as the bimetal ring 14 deforms. In addition, the shoe member 19 only protrudes from the lower end of the bimetal ring 14', and its height is lower than that of the bimetal ring 14' which can protrude from the lower end, as in the embodiment shown in FIGS. Easier to incorporate into the trap.

In carrying out the present invention, the shoe 1 member may have a narrow width, and may have a substantially rectangular cross section as shown in FIG. 5, for example. FIG. 5a shows a shoe member 21 which is disposed to cover the upper and lower ends of the bimetal ring 14', similar to the embodiment shown in FIG. FIG. 5 shows member 22. According to this embodiment, the shoe members 21 and 22 have a substantially rectangular cross section, and the portions where they contact the annular inclined surface are substantially flat and wide, so that wear during sliding is reduced. Therefore, the shoe member 21
・22 improves durability.

The present invention has the following unique effects. When welding a wear-resistant member to a bimetal ring, the material of the bimetal may change and the desired deformation may no longer occur. What is the present invention? 4. Since the shoe member made of an abrasive material is simply attached to the bimetal ring, there is no deterioration of the bimetal, and the bimetal ring can be deformed as desired.

If the Shikozu member wears out due to sliding, only this member can be replaced and used without leaving the bimetal ring as is. Therefore, the bimetal ring, which is more expensive than the juice member, can be used indefinitely and is less expensive to maintain.

The sheath member is bent (taken at a V angle) at the location where the bimetal ring wears out, that is, the part corresponding to the annular inclined surface.
j L: J is received. The corners that come into contact with the annular inclined surface during this bending are inevitably rounded, the resistance during sliding is reduced, and no deformation force is wasted.

[Brief explanation of the drawing]

FIG. 1 shows a disk-shaped sub-m I~ according to an embodiment of the present invention.
2 is a perspective view of the bimetal ring and seal l-1 member installed in the embodiment of FIG. 1, FIG. 3 is an enlarged sectional view of the main part of another embodiment, Figure 4 is the third
FIG. 5 is an enlarged perspective view of a shoe member of another embodiment; FIG. 6 is a sectional view of a disc-shaped steam trap to which the present invention is applied. 1・3; Trap housing 4; Inlet 5; Outlet 6
; Transforming chamber 7: Inner ring dust 8; Outer ring dust 9; Valve disk 11; Annular inclined surface 13; Holding metal 14.
14′・14”; Bimetal ring 15・16・1
8; Hole 17, 19, 21, 22; Shoe parts
20; Groove. Patent application 11 notes included Ryu 2 day notes 61Σ

Claims (1)

[Claims] 1. Form an annular groove in the area facing the valve disk, such as the outer periphery of the outer ring or between the inner and outer ring seats, form an annular inclined surface on the bottom wall of the annular groove, and bend the plate-shaped bimetal to form a cylindrical shape. A bimetal ring formed in the above is placed in the annular groove, and a plurality of narrow shoe members made of a wear-resistant material are attached to the bimetal ring in the vertical direction at points in contact with the annular inclined surface so as to contact the annular inclined surface. The bimetal ring expands or contracts in diameter in response to temperature changes, and when the humidity is low, it ascends the annular slope through the shoe member and lifts the valve disk, and at high temperatures it moves down the annular slope through the shoe member and away from the valve disk. A disc-shaped steam trap characterized by being separated.