CN216279649U

CN216279649U - Micro-switch control device for electromagnetic valve

Info

Publication number: CN216279649U
Application number: CN202123094990.4U
Authority: CN
Inventors: 王卫国; 江乃东
Original assignee: Lianyungang Touping Energy Equipment Co ltd
Current assignee: Lianyungang Touping Energy Equipment Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-04-12
Anticipated expiration: 2031-12-10

Abstract

The utility model discloses a solenoid valve microswitch control device, which belongs to the technical field of automatic switch equipment and comprises a U-shaped base, a protective cover, a microswitch, a large shaft, a small shaft and a compression spring. The problem of when solenoid valve core was stuck, the solenoid valve was not cut off power supply for a long time, when the steam turbine need dash to rotate, because of there is the oil pressure in the hydro-cylinder, lead to the unable throw off of swing gear is solved, the aspect of mainly used solenoid valve.

Description

Micro-switch control device for electromagnetic valve

Technical Field

The utility model relates to the technical field of automatic switch equipment, in particular to a microswitch control device for an electromagnetic valve.

Background

When the turbo generator set is started or stopped, the shafting needs to be rotated at low speed, and the DDZP series low-speed automatic mechanical jigger is special equipment designed for realizing the requirement. The barring gear consists of a speed reducer, a box body, a crank connecting rod mechanism, a gear transmission system, a hydraulic device, an electric control and the like.

The electromagnetic valve is a stop valve which is automatically opened and closed by means of electromagnetic force, is mainly used for automatically extruding a control object, belongs to an actuating element, can be used for regulating and controlling the direction, flow rate, speed and other parameters of a medium in an industrial and control system, and is widely applied to various fields of production.

The electromagnetic valve must be required to cut off the power when the jigger normally works, the electromagnetic valve must be cut off when the jigger normally works for 30 seconds, and the electromagnetic valve protection device is not additionally arranged on the existing equipment, so that the electromagnetic valve is not cut off for a long time when an electromagnetic valve core is blocked, when a steam turbine needs to be flushed, the oscillating gear cannot be disengaged due to oil pressure in the oil cylinder, the oscillating gear of a light person is certainly eaten, and a serious person has major accidents.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems mentioned in the background art, the utility model provides a microswitch control device for an electromagnetic valve, which adopts the following technical scheme:

the utility model provides a solenoid valve micro-gap switch controlling means, includes U type base, safety cover, micro-gap switch, macroaxis, staff and compression spring, its characterized in that: the right part of the U-shaped base is in threaded connection with the protective cover through a bolt, the protective cover plays a protective role on the U-shaped base, the protective cover, the micro switch, the large shaft, the small shaft and the compression spring, the U-shaped base plays a role in fixing the structure of the device and is also connected with the electromagnetic valve, the left part of the U-shaped base is provided with a first chute, the large shaft moves in the chute when the electromagnetic valve is electrified, the right part of the U-shaped base is provided with a second chute, the small shaft moves in the second chute when the electromagnetic valve is electrified, the large shaft is arranged in the first chute and penetrates through a shaft check ring, the shaft check ring plays a limiting role in moving the large shaft, the small shaft is arranged in the second chute and is fixedly connected with the small shaft, the compression spring is arranged on the small shaft, the spring on the small shaft is in a compression stage, the large shaft is in contact with the tail part of a valve core of the electromagnetic valve, when the electromagnetic valve is electrified, the valve core of the electromagnetic valve moves leftwards, the spring on the small shaft releases pressure, so that the large shaft and the small shaft also move leftwards, a signal contact of the micro switch is separated from the large shaft, the large shaft is provided with the signal contact, the signal contact is controlled by a PLC program and transmits signals, and the signal contact is fixedly connected with the micro switch.

Preferably: the first base is in threaded connection with the electromagnetic valve through a cross groove round head screw, an electromagnetic valve core is arranged in the electromagnetic valve and connected with the large shaft, and the large shaft and the small shaft are controlled to move through the movement of the electromagnetic valve core.

Preferably: the shaft check ring has elasticity, and can effectively play a role in buffering when the shaft check ring impacts the U-shaped base.

The utility model has the following advantages: when the electromagnetic valve is in a non-working state, a signal contact of the microswitch is closed, a spring on a small shaft is in a compression stage, a large shaft is in contact with the tail of a valve core of the electromagnetic valve, when the electromagnetic valve is electrified, the valve core of the electromagnetic valve moves leftwards, the spring on the small shaft releases pressure, the small shaft and the large shaft also move leftwards, a feeler of the microswitch is separated from the large shaft, the signal contact of the microswitch is disconnected, the electromagnetic valve starts to feed oil, hydraulic oil enters an oil cylinder to push a piston to rotate, a crank connecting rod mechanism drives a swinging gear to swing and is meshed with a large gear of a steam turbine, and the barring is in normal work. The problem of when solenoid valve core was stuck, the solenoid valve was not cut off power supply for a long time, when the steam turbine need dash to rotate, because of there is the oil pressure in the hydro-cylinder, lead to the unable throw off of swing gear is solved, the aspect of mainly used solenoid valve.

Drawings

FIG. 1 is a structural diagram of a microswitch control device of an electromagnetic valve of the utility model when not powered;

FIG. 2 is a structural diagram of a microswitch control device of an electromagnetic valve when the microswitch control device is powered on;

FIG. 3 is a top view of a microswitch control device for a solenoid valve of the present invention when not energized.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1-3:

the utility model provides an electromagnetic valve micro-gap switch controlling means, includes U type base 1, safety cover 2, micro-gap switch 11, macroaxis 6, staff 8 and compression spring 9, its characterized in that: 1 right part of U type base and safety cover 2 pass through 3 threaded connection of bolt, 1 left part of U type base on be equipped with spout one 4, 1 right side of U type base on be equipped with spout two 5, spout one 4 in be equipped with macroaxis 6, macroaxis 6 run through for the axle retaining ring 7, spout two 5 in be equipped with staff 8, macroaxis 6 and staff 8 fixed connection, staff 8 on be equipped with compression spring 9, macroaxis 6 on be equipped with signal contact 10, signal contact 10 and micro-gap switch 11 fixed connection, U type base 1 pass through cross groove button head screw 12 and solenoid valve 13 threaded connection, solenoid valve 13 in be equipped with solenoid valve core 14, solenoid valve core 14 be connected with macroaxis 6, for the axle retaining ring 7 elasticity.

The working principle of the utility model is as follows:

when the electromagnetic valve 13 is in a non-working state, the signal contact 10 of the microswitch 11 is closed, the spring at the tail end of the small shaft is in a compression stage, the left end of the large shaft 6 is in contact with the tail part of the electromagnetic valve core 14, when the electromagnetic valve 13 is powered on, the electromagnetic valve core 13 moves leftwards, the compression spring 9 on the small shaft 8 releases pressure, the large shaft 6 and the small shaft 8 also move leftwards, the signal contact 10 of the microswitch 11 is separated from the large shaft 6, the signal contact 10 of the microswitch 11 is disconnected, the electromagnetic valve 13 starts to feed oil, hydraulic oil enters the oil cylinder to push the piston to rotate, the swinging gear is driven to swing through the crank-link mechanism to be meshed with the large gear of the steam turbine, and the barring works normally. Normally work 30S solenoid valve 13 must cut off the power supply, if solenoid valve 13 does not cut off the power supply for a long time, when the steam turbine need dash to rotate, because of there is the oil pressure in the hydro-cylinder, lead to the oscillating gear can't break away, and the light person oscillating gear is by the ken eat, and the heavy person takes place major accident. The electromagnetic valve 13 is required to be powered off when the barring is in normal operation, if the electromagnetic valve 13 is powered on, the tail part of the electromagnetic valve core 14 does not return, the large shaft 6 cannot be pushed to move rightwards, the large shaft 6 does not move rightwards, the large shaft 6 cannot be contacted with the signal contact 10 of the microswitch 11, the signal contact 10 of the microswitch 11 is not closed, the main circuit is disconnected under the control of a PLC program, and after the barring is normally turned for 30S, if the signal contact 10 of the microswitch 11 is not closed, the barring stops working.

The utility model has simple operation and convenient use, and is suitable for comprehensive popularization and application. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a solenoid valve micro-gap switch controlling means, includes U type base (1), safety cover (2), micro-gap switch (11), macroaxis (6), staff (8) and compression spring (9), its characterized in that: u type base (1) right part and safety cover (2) pass through bolt (3) threaded connection, U type base (1) left part on be equipped with spout one (4), U type base (1) on the right side on be equipped with spout two (5), spout one (4) in be equipped with macroaxis (6), macroaxis (6) run through for the axle retaining ring (7), spout two (5) in be equipped with staff (8), macroaxis (6) and staff (8) fixed connection, staff (8) on be equipped with compression spring (9), macroaxis (6) on be equipped with signal contact (10), signal contact (10) and micro-gap switch (11) fixed connection.

2. A solenoid valve microswitch control device according to claim 1, wherein: u type base (1) pass through cross recess button head screw (12) and solenoid valve (13) threaded connection, solenoid valve (13) in be equipped with solenoid valve core (14), solenoid valve core (14) be connected with macroaxis (6).

3. A solenoid valve microswitch control device according to claim 1, wherein: the shaft retainer ring (7) has elasticity.