CN203038124U

CN203038124U - Liquid level controller

Info

Publication number: CN203038124U
Application number: CN 201320018026
Authority: CN
Inventors: 北村兼一
Original assignee: Gaoqiao Metal Products (suzhou) Co Ltd
Current assignee: Gaoqiao Metal Products (suzhou) Co Ltd
Priority date: 2013-01-14
Filing date: 2013-01-14
Publication date: 2013-07-03
Anticipated expiration: 2023-01-14

Abstract

The utility model discloses a liquid level controller. The liquid level controller comprises a floating ball, a floating ball connecting rod, approach switches, an approach switch support and an induction block, the floating ball is vertically provided with the floating ball connecting rod, the induction block is mounted on the floating ball connecting rod, and the floating ball moves up and down and drives the floating ball connecting rod and the induction block to move up and down; a plurality of approach switches are vertically mounded on the approach switch support, and the approach switches are photoelectric inductors; and when moving to near a sensing end of an approach switch, the induction block is sensed, a sensing signal is transmitted to a PLC connected with the approach switch, and the PLC controls the rise and the fall of the liquid level. The liquid level controller disclosed by the utility model is simple in structure, the plurality of approach switches are mounted, a plurality of actions can be performed, and accurate detection is ensured; and the PLC is used to control the rise and the fall of the liquid level, the response is sensitive, the accuracy of liquid level control is ensured, damage or production stops are not caused, and successful proceeding of production is ensured.

Description

A kind of fluid level controller

Technical field

The utility model relates to liquid level and detects the control instrument field, is specifically related to a kind of fluid level controller.

Background technology

In the prior art, it is that liquid level is controlled in the normal altitude range of regulation that a kind of fluid level controller is arranged, if reporting to the police and controlling accordingly not at this altitude range, then can appear in liquid level, get back to normal range of operation up to liquid level, just will report to the police and the control signal releasing.What ball float level controller was used is magnetic coupling principle, and magnet steel is arranged in the ball float, and dry-reed tube switch is arranged in the measuring tube, arrive the position at tongue tube place when ball float after, the tongue tube adhesive is guided to the pulpit with signal conductor with the two ends of this tongue tube, carries out liquid level control according to this switching signal.

In the prior art, each tongue tube as measurement point needs to draw two signal conductors, and measurement point is more many, and wiring is just more complicated, and not only input cost rises, and occurs line fault easily.This liquid level detection device is sensitive inadequately in addition, detects inaccurately, and reaction is slow, further causes machine breakdown to cause easily and produces pause.

The utility model content

For solving the problems of the technologies described above, the utility model provides a kind of fluid level controller, its objective is when liquid level detects control, can report to the police and control by multi-level, detects accurately, and reaction velocity is fast, the signal feedback sensitivity.

For achieving the above object, the technical solution of the utility model is as follows:

A kind of fluid level controller, comprise ball float and the upright floating ball rod on the described ball float, a plurality of near switch, near switch bearing and sensor block of being located at, described a plurality of all be vertically mounted near switch described near on the switch bearing, and with its sense terminals towards described floating ball rod; Described sensor block is installed on the described floating ball rod, described ball float moves up and down the drive floating ball rod and sensor block moves up and down, sensor block move near described during near the switch senses end by its sensing, and with sensing signal transmission to the described PLC that is connected near switch.

Preferably, described is photoelectric sensor near switch.

Preferably, described PLC controls the unlatching of small pump and drain solenoid valve or closes.

Preferably, described is 4 near switch, and is vertically mounted on described near on the switch bearing by the liquid level demand of production technology respectively.

By technique scheme, fluid level controller described in the utility model, simple in structure, easy for installation, only need install near switch in the position of required detection, so just can both detect the security in guaranteeing to produce at the point that needs detect smoothly; With the lifting of PLC control liquid level, transmission signal sensitivity, control puts in place, can guarantee the accuracy of liquid level control, and liquid level is too high or low excessively with regard to not occurring like this, causes the damage of machine or production to stop, and has guaranteed carrying out smoothly of production.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below.

Fig. 1 is the structural representation of the utility model fluid level controller;

The represented corresponding component title of numeral among the figure:

1. ball float 2. floating ball rods 3. tank lid 4. are near 104. times overload alarm limits of 103. times alarm limit switches of alarm limit switch switch on the overload alarm limit switch 102. on switch bearing 5. sensor blocks 101.

Embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.

The utility model provides a kind of fluid level controller, its principle is that liquid has buoyancy to ball float, makes floating ball rod rise or decline, and the sensor block on the floating ball rod approaches near switch, transmit signal with the PLC near switch to small pump or drain solenoid valve, control the liquid level lifting.

Below in conjunction with embodiment and embodiment the utility model is described in further detail.

Embodiment:

As shown in Figure 1, ball float 1 is installed in floating ball rod 2 lower ends, and ball float 1 is tank lid 3 times, sensor block 5 is fixedly mounted on the floating ball rod 2, when ball float 1 fluctuated, sensor block 5 also moved up and down thereupon, installed four successively near switch near switch bearing 4 vertical direction.When liquid level was low, sensor block 5 approached overload alarms limit switches 104 down, and following overload alarm limit switch 104 sends signal to connected PLC, and PLC sends actuating signal to small pump, and small pump is opened, liquid make-up in the water tank; When liquid level rises, when sensor block 5 approached down alarm limit switch 103, PLC sent signal to alarm, and the caution liquid level is lower, continues liquid make-up; Liquid level continues to rise, and sensor block 5 approaches goes up alarm limit switch 102, and PLC sends signal to alarm, and the caution liquid level is higher, and to the small pump output command, stops moisturizing; If liquid level is too high, make sensor block 5 approach when upward overload alarm is limit switch 101, PLC is to the drain solenoid valve output command, and the opening water discharge solenoid valve is discharged too high liquid.

Fluid level controller of the present utility model adopts float-ball type, and ball float 1 is followed level change, and the variation that sensor block 5 is simultaneously real-time is installed a plurality ofly near switch, and the control that can keep liquid level is quasi-continuous.The control of liquid level is adjusted by PLC, the accuracy that can make liquid level control, and the transmission signal is quick, sensitive, and liquid level can not cause too high or low excessively, causes the damage of machine or production to stop, and has guaranteed carrying out smoothly of production.

To the above-mentioned explanation of disclosed a kind of fluid level controller embodiment, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments herein.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.

Claims

1. fluid level controller, comprise ball float and the upright floating ball rod of being located on the described ball float, it is characterized in that: described fluid level controller also comprises a plurality of near switch, near switch bearing and sensor block, described a plurality of all be vertically mounted near switch described near on the switch bearing, and with its sense terminals towards described floating ball rod; Described sensor block is installed on the described floating ball rod, described ball float moves up and down the drive floating ball rod and sensor block moves up and down, sensor block move near described during near the switch senses end by its sensing, and with sensing signal transmission to the described PLC that is connected near switch.

2. a kind of fluid level controller according to claim 1, it is characterized in that: described is photoelectric sensor near switch.

3. a kind of fluid level controller according to claim 1 is characterized in that: the unlatching of described PLC control small pump and drain solenoid valve or close.

4. a kind of fluid level controller according to claim 1, it is characterized in that: described is 4 near switch, and is vertically mounted on described near on the switch bearing by the liquid level demand of production technology respectively.