CN201130930Y

CN201130930Y - Approximation type control switch

Info

Publication number: CN201130930Y
Application number: CNU2007201862097U
Authority: CN
Inventors: 高祥林
Original assignee: Inner Mongolia Yili Industrial Group Co Ltd
Current assignee: Inner Mongolia Yili Industrial Group Co Ltd
Priority date: 2007-12-20
Filing date: 2007-12-20
Publication date: 2008-10-08
Anticipated expiration: 2017-12-20

Abstract

The utility model discloses a proximity control switch, which comprises at least one or more parallel proximity control switch circuits, wherein, the proximity control switch circuits comprises a plurality of relays and inductive proximity switches, the inductive proximity switches are connected with electromagnetic coils of the relays and the normal open contacts of the relays are connected with a control circuit. The proximity control switch has the advantages that: loose contact, resetting failure after alarm, broken circuit, evacuation and other problems of the mechanical switch are solved; the proximity switch has the advantages of long service life, no mechanical contact, excellent waterproofness, low price and replacing convenience; when used in a Lile TBA/22 filling machine, the switch reduces closedown frequency of the equipment, increases operation rate, improves safety factor, avoids personnel injury due to short circuit of a safety door and is convenient to control.

Description

The proximity control switch

Technical field

The utility model relates to a kind of switch, especially relates to a kind of proximity control switch.

Technical background

Along with milk industries market is constantly expanded; Tetrapack TBA/22 bottle placer constantly increases; because bottle placer terminal environments humidity; and through hold-open door, close the door; it is frequent that former supporting plug-in type mechanical switch shows fault gradually, can not reset as loose contact, after reporting to the police, the emptying etc. of opening circuit, and causes to shut down number of times and increase; have a strong impact on mechanical efficiency, cause cost to be difficult to control.

The utility model content

The utility model has overcome the deficiencies in the prior art, and a kind of automaticity height is provided, and cost is low, the proximity control switch that can substitute mechanical switch fully of long service life.

The purpose of this utility model is implemented by following technical scheme: a kind of proximity control switch includes at least one or one or more proximity control switch circuit in parallel, wherein said proximity control switch circuit includes relay and inductance approach switch, wherein said inductance approach switch links to each other with the solenoid of described relay, and the normally opened contact of described relay links to each other with control loop.

Advantage of the present utility model is: solved the mechanical switch loose contact, can not reset after reporting to the police, problem such as the emptying of opening circuit; Near the switch long service life, nothing machinery contacts, water resistance is superior, cheap, and it is convenient to change; Use has reduced the equipment downtime number of times at Tetrapack TBA/22 bottle placer, has improved operation rate; Improved coefficient of safety, prevented to hinder control conveniently because of the short circuit emergency exit personnel that cause.Useful novel water resistance of this reality and break-make performance all be better than mechanical switch near switch, long service life, cost is relatively low.

Figure of description

Fig. 1 is the theory diagram of embodiment 1.

Fig. 2 is the theory diagram that is applied in control loop of embodiment 1.

Fig. 3 is the theory diagram of embodiment 2.

Fig. 4 is the theory diagram that is applied in control loop of embodiment 2.

Fig. 5 is the theory diagram of embodiment 3.

Fig. 6 is the theory diagram that is applied in control loop of embodiment 3.

Relay-1, inductance approach switch-2, solenoid-3, the normally opened contact of relay-4, control loop-5, power supply-6, PLC module-7, safety relay-8, ac high-voltage loop-9.

Embodiment

Embodiment 1: as Fig. 1, shown in Figure 2, a kind of proximity control switch includes a proximity control switch circuit, wherein proximity control switch circuit includes relay 1 and inductance approach switch 2, wherein inductance approach switch 2 links to each other with the solenoid 3 of relay 1, and the normally opened contact 4 of relay 1 links to each other with control loop 5.Control loop 5 can be to include power supply 6, and PLC module 7 and safety relay 8 are formed, and PLC module 7 links to each other with safety relay 8, and links to each other with power supply 6.Above-mentioned proximity control switch is installed on the emergency exit of bottle placer, utilize the metal principle of induction of inductance approach switch 2, open and close state to emergency exit detects, when emergency exit is closed, inductance approach switch 2 output high level, connect the solenoid 3 of the relay that is connected, make its action, normally opened contact 4 closures of relay, 4 fens two loops of normally opened contact, the one tunnel gives PLC input module, the linker interior contacts, safety relay 8 is connected on another road, and it can be resetted; When emergency exit is opened, inductance approach switch 2 output low levels, the solenoid 3 of the relay that disconnection is connected makes bottle placer produce alarm signal, and device security is shut down.

Embodiment 2: shown in Figure 4 as Fig. 3, a kind of proximity control switch includes the proximity control switch circuit of three parallel connections, and the proximity control switch circuit of every parallel connection links to each other with three control loops respectively.Wherein proximity control switch circuit includes relay 1 and inductance approach switch 2, and wherein inductance approach switch 2 links to each other with the solenoid 3 of relay 1, and the normally opened contact 4 of relay 1 links to each other with control loop 5.Control loop 5 can be to include power supply 6, the control loop that PLC module 7 and safety relay 8 are formed, and PLC module 7 links to each other with safety relay 8, and links to each other with power supply 6.

Embodiment 3: shown in Figure 6 as Fig. 5, a kind of proximity control switch includes the proximity control switch circuit of four parallel connections, and the proximity control switch circuit of every parallel connection links to each other with four control loops respectively.Wherein proximity control switch circuit includes relay 1 and inductance approach switch 2, and wherein inductance approach switch 2 links to each other with the solenoid 3 of relay 1, and the normally opened contact 4 of relay 1 links to each other with control loop 5.Wherein three control loops 5 can be to include power supply 6, the control loop that PLC module 7 and safety relay 8 are formed, and PLC module 7 links to each other with safety relay 8, and links to each other with power supply 6.An other control loop is ac high-voltage loop 9.

Claims

1. proximity control switch, it is characterized in that: it includes at least one or one or more proximity control switch circuit in parallel, wherein said proximity control switch circuit includes relay and inductance approach switch, wherein said inductance approach switch links to each other with the solenoid of described relay, and the normally opened contact of described relay links to each other with control loop.