CN215806660U

CN215806660U - Protection mechanism for preventing misoperation by manual-automatic rapid switching of valve

Info

Publication number: CN215806660U
Application number: CN202121588993.0U
Authority: CN
Inventors: 郑小波
Original assignee: Zhejiang Borui Fluid Equipment Co ltd
Current assignee: Boyue Automatic Control Valve Co ltd; Zhejiang Borui Fluid Equipment Co Ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-02-11
Anticipated expiration: 2031-07-13

Abstract

The utility model relates to a valve structure, in particular to a protection mechanism for preventing misoperation in manual and quick switching of a valve, which solves the problem of manual and automatic switching of the valve. The novel steel ball hand wheel positioning mechanism is designed, can be quickly positioned, is not easy to separate manually or automatically, ensures safety and is hidden; the novel manual-automatic switching connecting mechanism adopting the three-jaw connecting mechanism has high connecting speed and high stability; the micro switch is waterproof, dustproof and moistureproof, and can be used in places with moisture and dust.

Description

Protection mechanism for preventing misoperation by manual-automatic rapid switching of valve

Technical Field

The utility model relates to a valve structure, in particular to a protection mechanism for preventing misoperation in manual and automatic quick switching of a valve.

Background

The valve actuator is an indispensable part on a pipeline as an actuating mechanism and a control valve assembly in an automatic valve control system, and is widely applied to various pump stations for regulating the flow of process media in water conservancy, thermoelectricity, water supply and drainage, chemical engineering, metallurgy and the like.

The prior patents are as follows: CN201620165054.8, an electromechanical dual protection structure for preventing manual misoperation; CN201520901524.8, manual lock device for valve electric device; CN201520899899.5 is used for the hand wheel connection structure of valve electric actuator. Has the following defects: 1. the manual positioning of the prior patent is protruded outside, and the locking pin needs to be pulled manually. And only one mode can be positioned, and manual or automatic modes cannot be quickly switched. 2. The existing special hands are automatically switched to adopt cylindrical pins for connection, so that the connection speed is low and the stability is low.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a protection mechanism for preventing misoperation in manual and quick switching of a valve.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a manual automatic fast switch-over of valve prevents maloperation protection mechanism, includes motor worm, hand wheel seat, hand automatic switch-over seat and hand wheel pole, be equipped with the hand wheel position circle that cup joints the hand wheel pole in the hand wheel seat, be equipped with the elastic locating subassembly on the inboard lateral wall of hand wheel position circle, the hand wheel pole is equipped with the automatic recess that is in relative outside manual recess and relative inside on stretching into hand wheel seat one end tip, the hand wheel pole respectively is equipped with three-jaw coupling assembling in stretching into hand wheel seat one end department and motor worm and leaning on hand wheel pole one end department, and the spacing cooperation of axial between the three-jaw coupling assembling, still be equipped with the micro-gap switch that waterproof dustproof dampproofing just links to each other integratively with hand automatic switch-over seat in the hand wheel seat, normally open normal closed circuit through the butt contact switching between hand wheel pole and the micro-gap switch in the axial.

The hand wheel locating ring is provided with a mounting hole which is communicated with the inside and the outside of the ring and used for placing the elastic locating component, the elastic locating component comprises a fastener, a spring and a steel ball which are sequentially arranged at the mounting hole from outside to inside, and the steel ball is only in limit fit with one of a manual groove or an automatic groove.

The fastener is an inner hexagonal fastening screw, and the fastener is fixedly connected with the wall of the mounting hole through threads.

The three-jaw connecting assembly is composed of a worm connecting jaw and a hand wheel rod, and the worm connecting jaw and the hand wheel rod are axially matched in a three-jaw limiting mode.

The hand wheel seat, the hand automatic change-over switch seat and the micro switch are sequentially in threaded connection and fixed.

Utility model's beneficial effect: the valve manual-automatic rapid switching misoperation prevention protection mechanism provided by the utility model is designed into a novel steel ball hand wheel positioning mechanism, can be positioned rapidly, is not easy to separate either manually or automatically, ensures safety, and is hidden; the novel manual-automatic switching connecting mechanism adopting the three-jaw connecting mechanism has high connecting speed and high stability; the micro switch is waterproof, dustproof and moistureproof, and can be used in places with moisture and dust.

Drawings

FIG. 1 is a schematic view of a partial structure of the present invention;

FIG. 2 is a schematic view of the elastic positioning assembly of the present invention;

FIG. 3 is a schematic view of the three-jaw axial geometry of the present invention;

FIG. 4 is a schematic view of a three-jaw connection according to the present invention;

FIG. 5 is a schematic view of a connection structure of the manual/automatic transfer switch base and the micro switch according to the present invention;

FIG. 6 is a schematic view of a second connection structure of the manual/automatic transfer switch base and the micro switch according to the present invention;

fig. 7 is a schematic view of the connection structure of the worm connecting claw and the hand wheel rod of the utility model.

Detailed Description

As shown in fig. 1-7, a protection mechanism for preventing misoperation by manual-automatic fast switching of a valve comprises a motor worm 1, a hand wheel seat 2, a manual-automatic switching switch seat 13 and a hand wheel rod 3, a hand wheel positioning ring 4 sleeved with the hand wheel rod 3 is arranged in the hand wheel seat 2, an elastic positioning assembly is arranged on the side wall of the inner side of the hand wheel positioning ring 4, the hand wheel seat 2 is arranged at the end part of a worm bearing and used for positioning the fixed hand wheel rod 3, and the elastic positioning assembly is used for elastic clamping limiting or positioning to achieve the effect of locking. The end part of the hand wheel rod 3 extending into the hand wheel seat 2 is provided with a manual groove 5 which is relatively outside and an automatic groove 6 which is relatively inside, and the elastic positioning assembly is clamped in different grooves while the micro switch 8 is triggered or not triggered. The elastic positioning component is characterized in that the elastic positioning component is quickly clamped and positioned by utilizing elasticity. The steel ball 12 is in a manual mode in the outer manual groove 5, and the steel ball 12 is in an automatic mode in the inner automatic groove 6.

Hand wheel pole 3 is drawing into 2 one end departments of hand wheel seat and motor worm 1 and leaning on 3 one end departments of hand wheel pole and respectively being equipped with three-jaw coupling assembling 7, and the spacing cooperation of axial between the three-jaw coupling assembling 7, still be equipped with waterproof dustproof damp-proofing micro-gap switch 8 in the hand wheel seat 2, normally open normally closed circuit is switched through the butt contact in the axial between hand wheel pole 3 and micro-gap switch 8. A three-jaw connecting assembly 7 is adopted, the front end of the hand wheel rod 3 is designed to be of a three-jaw structure, and a worm connecting jaw 14 is fixed on the worm side through a pin. The connection can be made when manual connection is required. The three-jaw connecting assembly 7 has various specific forms, and mainly utilizes mutual clamping between the jaw bodies to limit the separation between the parts, so as to better protect the product scope, the description and the limitation are not made herein. A waterproof, dustproof and moistureproof microswitch 8 is arranged on the inner side of the hand wheel seat 2, and has the function that when the hand wheel seat is manually operated, the hand wheel rod 3 leaves a switch contact, a normally closed point of the switch becomes a normally open point, and a motor wire is automatically disconnected; on the contrary, when the hand wheel presses down the switch contact and turns into electric operation, the normally open point of the switch becomes the normally closed point, and the motor wire is connected; still designed simple and convenient switch seat, made things convenient for concrete operation.

The hand wheel positioning ring 4 is provided with an inner mounting hole 9 and an outer mounting hole 9 of the communicating ring, the elastic positioning assembly comprises a fastener 10, a spring 11 and a steel ball 12 which are sequentially arranged at the mounting hole 9 from outside to inside, and the steel ball 12 is only in limit fit with one of the manual groove 5 or the automatic groove 6. This is one of the specific embodiments and is not meant to be the only limitation.

The fastener 10 is an inner hexagonal fastening screw, and the fastener 10 is fixedly connected with the hole wall of the mounting hole 9 through threads. The three-jaw connecting assembly 7 is made of No. 45 steel material. The hand wheel seat 2 is formed by die-casting an aluminum alloy material, and the hand wheel positioning ring 4 is made of an aluminum alloy material. The material or the model part is adopted, the design and use requirements are met, the structural strength is high, and the service life is long.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, are not to be considered as limiting the present invention, and that the fundamental principles, the main features, and the advantages of the present invention are shown and described above, as would be understood by those skilled in the art.

Claims

1. A protection mechanism for preventing misoperation of valve by manual-automatic fast switching comprises a motor worm, a hand wheel seat, a manual-automatic switching switch seat and a hand wheel rod, it is characterized in that a hand wheel positioning ring sleeved with a hand wheel rod is arranged in the hand wheel seat, an elastic positioning component is arranged on the side wall of the inner side of the hand wheel positioning ring, the end part of the hand wheel rod extending into the hand wheel seat is provided with a manual groove which is relatively arranged outside and an automatic groove which is relatively arranged inside, the hand wheel rod is provided with a three-jaw connecting assembly at the end of one end extending into the hand wheel seat and at the end of one end of the motor worm close to the hand wheel rod, the three-jaw connecting components are axially limited and matched, a water-proof, dust-proof and damp-proof micro switch which is connected with the manual automatic change-over switch seat into a whole is also arranged in the hand wheel seat, the hand wheel rod and the micro switch are in contact switching through abutting connection in the axial direction to form a normally open and normally closed circuit.

2. The manual-automatic quick switching misoperation prevention protection mechanism for the valve according to claim 1, wherein the hand wheel positioning ring is provided with a mounting hole for communicating the inside and the outside of the ring and for placing an elastic positioning assembly, and the elastic positioning assembly comprises a fastener, a spring and a steel ball which are sequentially arranged at the mounting hole from outside to inside.

3. The manual automatic quick switching misoperation prevention protection mechanism of the valve as claimed in claim 2, wherein the fastener is a hexagon socket set screw, and the fastener is fixed with the wall of the mounting hole through threaded connection.

4. The valve manual-automatic rapid switching misoperation prevention protection mechanism according to claim 2, wherein the hand wheel rod is provided with a manual groove and an automatic groove which are matched with the steel ball.

5. The valve manual automatic fast switch malfunction prevention protection mechanism of claim 4, wherein said steel ball is in limit engagement with only one of a manual groove or an automatic groove.

6. The manual automatic quick switching misoperation prevention protection mechanism for the valve according to claim 1 or 2, wherein the three-jaw connecting assembly consists of a worm connecting jaw and a hand wheel rod, and the worm connecting jaw and the hand wheel rod are axially matched in a limiting way through three jaws.

7. The valve manual-automatic rapid switching misoperation prevention protection mechanism as claimed in claim 1, wherein the hand wheel seat, the manual-automatic switching switch seat and the micro switch are sequentially fixed in a threaded connection.