CN219413704U - Diaphragm type actuating mechanism with protective structure - Google Patents

Abstract

The utility model relates to a diaphragm type actuating mechanism with a protective structure, which is characterized by comprising a diaphragm cover, a shell, a diaphragm disc, a spring, a push rod, a spring seat, a spring adjuster, a push rod connector, an integrated mounting table, a travel indicating disc and an indicator scale.

Description

Diaphragm type actuating mechanism with protective structure

Technical Field

The utility model relates to the field of valve actuating mechanism production and manufacturing, in particular to a diaphragm actuating mechanism with a protection structure.

Background

The actuator uses liquid, gas, electricity or other energy sources and converts them into driving action by means of motors, cylinders or other means, the basic actuator is used to drive the valve to a fully open or fully closed position, the actuator with the control valve can be used to move the valve to any position precisely, although most actuators are used to switch the valve, the design of today's actuators far exceeds simple switching functions, they comprise position sensing means, torque sensing means, electrode protection means, logic control means, digital communication means, PID control means etc., all mounted in a compact housing.

At present, the actuating mechanism is installed on the valve by using a traditional installation bracket, the installation of the traditional installation bracket requires more parts, the production cost is increased, and the installation method using the installation bracket can not enable the gravity center of the instrument to be close to the actuating mechanism and the valve assembly, so that the vibration damage of the actuating mechanism is easily caused.

Disclosure of Invention

According to the technical problems, the utility model provides a diaphragm type actuating mechanism with a protective structure, which is characterized by comprising a diaphragm cover, a shell, a diaphragm disc, a spring, a push rod, a spring seat, a spring regulator, a push rod connector, an integrated mounting table, a travel indicating disc and an indicator scale,

the membrane cover is fixedly connected with the shell through a bolt, the membrane cover is provided with a membrane, the upper end of the push rod is fixedly connected with the central position of the membrane cover, the push rod is connected with a membrane disc, a part of the lower side of the push rod is connected inside the spring regulator, the upper end of the spring regulator is in snap-fit connection with a spring seat, a part of the upper side of the push rod is connected into the spring seat, the lower side part of the push rod, which is positioned on the spring regulator, is sequentially connected with a push rod connector, the lower side of the push rod connector is connected with a travel indicating disc,

preferably, the shell is provided with an integral mounting table, the shell is internally provided with an indicator graduated scale,

preferably, a portion of the pushrod is located inside the housing.

The utility model has the beneficial effects that:

the utility model has high reliability, is easy to use, can adopt an integrated and integrated installation mode, does not need to use a traditional installation bracket, thereby enhancing vibration resistance and reducing the number of parts required by installation, thereby avoiding damage caused by vibration to the greatest extent, and in addition, the utility model is backwards compatible and compatible with an instrument using a traditional bracket type installation kit;

the utility model has good linearity between loading pressure and stroke, the molded diaphragm moves in the deeper diaphragm cover, the change of the diaphragm area in the whole stroke range is reduced to the greatest extent, the large thrust can be born, and the molded diaphragm can provide the maximum thrust corresponding to the size of the diaphragm;

the utility model has good dynamic stability and frequency response capability, and the membrane cover at the air supply side is shallow, which means that the chamber volume at the air supply side is smaller, thereby shortening the response time to the greatest extent;

the utility model has long service life, and strong stability and can provide corrosion protection by adopting firm thick-wall cast iron and steel structure.

Drawings

FIG. 1 is a schematic diagram of the whole structure of a diaphragm type actuator with a protection structure according to the present utility model;

FIG. 2 is a cross-sectional view of a diaphragm actuator with a protective structure according to the present utility model;

the following figures are shown: 1. the device comprises a membrane cover, a housing, a membrane disc, a spring, a push rod, a spring seat, a spring adjuster, a push rod connector, an integral mounting table, an indicator scale and a stroke indicating disc.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

Example 1

As shown in the figure, the membrane cover 1 is fixedly connected with the shell 2 through a bolt, the membrane cover 1 is provided with a membrane 3, the upper end of the push rod 6 is fixedly connected with the center position of the membrane cover 1, the push rod 6 is connected with the membrane disc 4, a part of the lower side of the push rod 6 is connected inside the spring regulator 8, the upper end of the spring regulator 8 is in snap-fit connection with the spring seat 7, a part of the upper side of the push rod 6 is connected into the spring 5 until the spring seat 8, the lower side part of the push rod 6, which is positioned on the spring regulator 8, is sequentially connected with the push rod connector 9, the lower side of the push rod connector 9 is connected with the travel indicating disc 12,

preferably, the shell 2 is provided with an integral mounting table 10, the shell 1 is internally provided with an indicator graduated scale 11,

preferably, a portion of the push rod 6 is located inside the housing 2.

Example 2

The present utility model is a positive actuator, and the push rod 6 of the present utility model is moved downward by applying air pressure to the upper mask cap 1. When the applied air pressure is reduced, the balancing spring 5 will move the push rod 6 upwards. If the loading pressure is removed, the spring 5 will move the push rod 6 to the uppermost position. The utility model provides a mode of action of 'gas losing opening' for the downward pushing and closing type valve and a mode of action of 'gas losing closing' for the downward pushing and opening type valve.

The integrated mounting table 10 can be integrally mounted with the valve, which is beneficial to enabling the gravity center of the instrument to be close to the actuating mechanism and the valve assembly, so that damage caused by vibration is avoided to the greatest extent, and a quick, simple and accurate mounting process is realized.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. Various components mentioned in the present utility model are common in the art, and it should be understood by those skilled in the art that the present utility model is not limited by the above embodiments, and the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications can be made in the present utility model without departing from the spirit and scope of the utility model, which is defined in the claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (3)

1. A diaphragm type actuating mechanism with a protective structure is characterized by comprising a diaphragm cover, a shell, a diaphragm disc, a spring, a push rod, a spring seat, a spring regulator, a push rod connector, an integrated mounting table, a travel indicating disc and an indicator graduated scale,

the membrane cover is fixedly connected with the shell through a bolt, the membrane cover is provided with a membrane, the upper end of the push rod is fixedly connected with the central position of the membrane cover, the push rod is connected with a membrane disc, a part of the lower side of the push rod is connected inside the spring regulator, the upper end of the spring regulator is connected with a spring seat in a clamping manner, a part of the upper side of the push rod is connected into the spring seat, the lower side part of the push rod, which is positioned on the spring regulator, is sequentially connected with a push rod connector, and the lower side of the push rod connector is connected with a travel indicating disc.

2. The diaphragm actuator with the protective structure according to claim 1, wherein the housing is provided with an integral mounting table, and the housing is internally provided with an indicator scale.

3. The diaphragm actuator with protective structure of claim 1, wherein a portion of said pushrod is located within the housing.