JPH028705Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] Industrial Application Field The present invention relates to a jig for mounting a diaphragm action plate of a diaphragm type actuator such as a diaphragm operated valve.

BACKGROUND OF THE INVENTION Diaphragm actuators generally utilize spring force to counterbalance fluid pressure acting on a diaphragm. For this purpose, a compression spring is set on the opposing surface of the diaphragm via a diaphragm action plate.

By the way, when attempting to attach the diaphragm operating plate to an operating rod for operating a valve or the like, the strong repulsive force exerted by the compression spring makes it difficult to attach the diaphragm operating plate.

Conventionally, in order to set the compression spring on the diaphragm action plate, a feed mechanism including a thrust receiver and a relatively rotatable adjustment screw is installed adjacent to the compression spring as a standard component of the diaphragm drive. The diaphragm plate was installed in advance under a condition where the reaction force of the compression spring was slight, and then the required reaction force was increased manually using the screw feeding mechanism to assemble the diaphragm plate.

Problems to be Solved by the Invention However, in the conventional method described above, space must be secured within the frame to accommodate the adjustment screw feeding mechanism, which makes the frame relatively large, and Due to the increased weight, the mounting strength of the diaphragm type drive unit must be increased, and in particular, the assembly work requires a large amount of work to ensure a strong spring reaction force during use. There were flaws.

The present invention was devised to eliminate the above-mentioned conventional drawbacks, and its purpose is to not only allow for extremely easy and quick installation and removal, but also to safely and accurately attach the diaphragm actuating plate to the actuating rod. The purpose is to provide a jig that can be attached.

[Structure of the invention] Means for solving the problem The mounting jig for the diaphragm action plate of the present invention is
a cylindrical frame; a diaphragm lower casing that is integrally attached to the upper end of the frame and forms a diaphragm chamber together with the diaphragm upper casing; and a diaphragm lower casing that is vertically movably inserted into the frame and connected to the valve and the valve rod. a diaphragm action plate which is attached and fixed to the upper part of the action rod by a tightening bolt; and a compression spring which is set between the diaphragm action plate and the frame and urges the diaphragm action plate upward. In a jig for attaching the diaphragm operating plate of a diaphragm actuator such as a diaphragm operating valve to an operating rod against the repulsive force of a compression spring, the jig includes: a hanging member that hangs on the lower casing of the diaphragm, and a compression spring. This device is characterized by comprising a frame body that is set on the upper end of a jack placed on the upper diaphragm action plate, and a connecting rod that connects the hooking member and the frame body.

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a cylindrical frame of a diaphragm actuator, and a diaphragm lower casing 2 is integrally attached to the upper end of the frame. The diaphragm lower casing 2 is adapted to constitute a diaphragm chamber together with a diaphragm upper casing (not shown).

A valve such as a regulating valve and an operating rod 3 connected to the valve rod are inserted into the frame 1 so as to be vertically movable, and the upper part thereof is formed into a bifurcated shape. A diaphragm operating plate 4 is attached and fixed to the upper end of the operating rod 3 with a tightening bolt 5. A compression spring 6 is set between the diaphragm action plate 4 and the inner flange portion 1a of the frame 1, and the diaphragm action plate 4
It is designed to bias the force upward.

A flange portion 2a is formed on the outer peripheral portion of the diaphragm lower casing 2, and the center portion of the hooking member 7 abuts on the left and right lower side surfaces of the flange portion 2a. A hooking pin 7 is provided at the center of the hooking member 7.
A is implanted and inserted into the bolt hole of the flange portion 2a, so that the hooking member 7 does not come off from the flange portion 2a.

Connecting rods 8 are attached to both ends of the hanging member 7, and a total of four connecting rods 8 extend upward, and the tips of cross-shaped frames 9 are attached to the upper ends of the connecting rods 8, respectively. It is being

Reference numeral 10 denotes a jack, which is set between the central portion 9a of the frame 9 and the diaphragm action plate 4.

Since the jig of this embodiment is constructed as described above, when attaching and fixing the diaphragm action plate 4 to the upper end of the actuating rod 3, the actuating rod 3 and the compression spring 6 are assembled into the frame 1. With the diaphragm action plate 4 placed on the compression spring 6, the jack 10 is placed on the center thereof.

Next, place the central part 9a of the frame 9 on the jack 10, and with the central part of the hooking member 7 hooked on the lower surface of the flange part 2a of the diaphragm lower casing 2, the jack 10 is placed. When expanded, the jack 10 exerts a reaction force on the flange 2a of the diaphragm lower casing 2 via the frame 9, the connecting rod 8, and the hooking member 7, so the compression spring 6 is pushed downward. Compressed. When the compression spring 6 is pushed downward, the lower surface of the diaphragm action plate 4 comes into contact with the upper end of the action rod 3, so after aligning the bolt holes of both, insert the tightening bolt 5 and tighten it to unite it. become

When the diaphragm operating plate 4 and the operating rod 3 are connected, the jack 10 is retracted to remove the locking member 7 from the flange portion 2a, and the installation work is completed.

In the above embodiment, the hooking member 7 is attached to the flange portion 2.
Although it is designed to hang directly on the casing 7a, if the type of the casing is different, a connecting member may be appropriately interposed between the latching member 7 and the flange portion 2a.

[Effects of the invention] As described above, the present invention includes a cylindrical frame; a diaphragm lower casing that is integrally attached to the upper end of the frame and forms a diaphragm chamber together with the diaphragm upper casing; an operating rod that is movably inserted and connected to the valve and the valve rod; a diaphragm action plate that is attached and fixed to the upper part of the operating rod by a tightening bolt; and a diaphragm action plate that is set between the diaphragm action plate and the frame. In a jig for attaching the diaphragm actuating plate of a diaphragm type actuator such as a diaphragm operation valve to an actuating rod against the repulsive force of the compression spring, the jig comprising: a compression spring that urges the diaphragm actuating plate upward; It consists of a hanging member that hangs on the lower casing of the diaphragm, a frame that is set on the upper end of a jack placed on the diaphragm action plate on the compression spring, and a connecting rod that connects the hanging member and the frame. Therefore, it is not only easy and quick to install and remove, but also has the advantage of being simple in structure, difficult to damage, inexpensive, easy to operate, and reliable in installation.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the jig of the present invention in a set state, and FIG. 2 is a perspective view showing the jig portion with solid lines. 1... Frame, 1a... Inner flange portion, 2
...Diaphragm lower casing, 2a... Flange portion, 3... Operating rod, 4... Diaphragm action plate, 5... Tightening bolt, 6... Compression spring, 7...
Hanging member, 8... Connecting rod, 9... Frame, 9a...
Central part, 10... Jyatsuki.

Claims (1)

[Scope of utility model registration request] a cylindrical frame; a diaphragm lower casing that is integrally attached to the upper end of the frame and forms a diaphragm chamber together with the diaphragm upper casing; and a diaphragm lower casing that is vertically movably inserted into the frame and connected to the valve and the valve rod. The operating rod that is
A diaphragm operating valve comprising: a diaphragm action plate attached and fixed to the upper part of the operating rod by a tightening bolt; and a compression spring set between the diaphragm action plate and the frame to bias the diaphragm action plate upward. In a jig for attaching the diaphragm action plate of a diaphragm type actuator to the actuation rod against the repulsive force of a compression spring; A mounting jig for a diaphragm action plate, comprising a frame body set on the upper end of a placed jack, and a connecting rod connecting the above-mentioned hooking member and the frame body.