JPH031668Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention relates to a reed valve that has a reed that opens due to a pressure difference before and after a case window. This relates to reed valves.

[Prior art]

FIG. 5 shows an outline of the structure of a conventional reed valve.

In the figure, one end of a lead 3 is fixed to the outer periphery of the window 2 of the case 1, and a stopper 4 having a predetermined radius of curvature is fixed behind the lead 3 to the outer periphery of the window 2 of the case 1 with a screw 5. has been done.

and a wide range of flow specifications and rubber,
In order to change the amount of opening of the lead 3, that is, the amount of lift, taking into consideration the state of the sheet surface made of aluminum, synthetic resin, etc., x (R starting point) in FIG.
R (stopper curvature radius), h (stopper tip height),
This is handled by varying l (effective lead length), t (lead plate thickness), etc.

[Problem that the invention attempts to solve]

Conventional reed valves are configured as described above, so it is necessary to design reed valves that suit each flow rate specification and seat surface condition, and to individually manufacture reed valves with different dimensions as described above. This poses a problem in that, in addition to increasing costs, once the reed valve is assembled, the maximum lift amount of the reed cannot be varied as appropriate depending on the flow rate specifications and the like.

This idea was made to solve the problems mentioned above, and the purpose was to create a reed valve that could be manufactured at low cost and that could control the maximum lift of the reed in accordance with the flow rate specifications, etc. shall be.

[Means for solving problems]

The reed valve according to this invention is provided with a lift control plate for controlling the maximum lift amount of the reed and means for varying the position of the lift control plate at the tip of a stopper placed behind the reed. .

[Effect]

In the reed valve of this invention, a lift control plate provided at the tip of the stopper is adjusted by a variable position means such as a screw, and the maximum lift amount of the reed is variably controlled in accordance with flow rate specifications and the like.

〔Example〕

An embodiment of this invention will be described below with reference to the drawings.

As shown in FIG. 1, the reed valve of this invention has a structure in which a lift control plate 6 is attached to the tip of a stopper 4 so as to be variable in position with an adjustment screw 7.

That is, as shown in FIG. 2, the amount of protrusion of the lift control plate 6 is controlled by turning the adjusting screw 7, and the maximum lift amount of the lead 3 is adjusted from h in FIG.
The position is variable to h'(h>h').

FIG. 3 shows details of the lift control plate 6 and adjustment screw 7 that are assembled to the stopper 4. That is, a buffer plate 6a made of a rubber-like elastic material is fixed to the tip of the lift control plate 6 in order to reduce the impact when the lead 3 collides with the lift control plate 6. , female threaded portion 4a of stopper 4
Screw together the tips of the adjustment screws 7 that protrude from the. Although the shape of the lift control plate 6 is hemispherical in this embodiment, it is not necessarily limited to this shape, and the adjustment screw 7 may be a general cross-recessed machine screw or a cross-recessed screw. with bolt,
Any type of screw such as a hexagonal bolt may be used, and the adjustment screw 7 may be any variable means that can change the position of the lift control plate 6, such as one equipped with a click-stop mechanism. .

Further, the lift control plate 6 and the adjusting screw may not be separate parts, but may be formed integrally as shown in FIG. 4. In this case, a hexagonal hole 6d is formed inside the male threaded portion 6c,
Insert a rod spanner or the like into this hexagonal hole 6d and turn it to adjust the amount of protrusion of the lift control plate 6. Furthermore, the material of the adjustment screws and the lift control plate 6 is not limited to metal, and may be made of synthetic resin, for example. In this case, since it has appropriate elasticity, the buffer plate 6a at the tip of the lift control plate 6 is It won't necessarily be necessary.

[Effect of idea]

As described above, according to this invention, a lift control plate for controlling the maximum lift amount of the lead and means for changing the position of the lift control plate are provided at the tip of the stopper placed behind the lead. ,
It has the following effects.

(a) Since the lift control plate can be moved by position variable means such as adjustment screws provided on the stopper, the maximum lift amount of the lead can be adjusted from h to h in Figures 1 and 2.
It becomes possible to freely select within the range of h'.

(b) With (a) above, a single reed valve can accommodate a wide range of flow specifications and case materials without changing the R starting point of the stopper, the effective lead length, the area of the case window, etc. can be done.

(c) Unlike conventional models in which the shape of the stopper is changed using an external actuator, etc., this lift control plate consists of simple parts such as a lift control plate and a position variable means such as an adjustment screw for moving the lift control plate. Therefore, it can be manufactured at low cost and is easy to assemble.

[Brief explanation of drawings]

Figure 1 is a schematic configuration diagram of a reed valve showing an embodiment of this invention, Figure 2 is a schematic diagram of the reed valve of this invention with the lift control plate moved, and Figures 3A and B are the above Detailed view of the lift control plate and the adjusting screw for attaching the lift control plate, FIGS. 4A and 4B are configuration diagrams showing another embodiment in which the above-mentioned lift control plate and adjusting screw are integrated. , FIG. 5 is a schematic diagram showing a conventional reed valve. In each figure, the same reference numerals indicate the same or corresponding parts. 1...Case, 2...Window, 3...Lead, 4
...Stopper, 6...Lift control board, 6a...Buffer plate, 7...Adjustment screw.

Claims (1)

[Scope of utility model registration request] A reed 3 whose one end is fixed to the outer periphery of the window 2 of the case 1 and whose other end is pushed open by the fluid passing through the window 2, and a reed 3 that controls the maximum lift amount of the reed 3. In the reed valve having a stopper 4 disposed behind the reed, a lift control plate 6 for controlling the maximum lift amount of the reed 3 and a position variable means for the lift control plate 6 are provided at the tip of the stopper 4. A reed valve characterized by being provided with.