CN201043910Y

CN201043910Y - Floating liquid level detecting control device

Info

Publication number: CN201043910Y
Application number: CN 200720090571
Authority: CN
Inventors: 王东胜; 郑长科; 闫玉宏; 张凯
Original assignee: YONGCHENG COAL ELECTRICITY GROUP CO Ltd
Current assignee: YONGCHENG COAL ELECTRICITY GROUP CO Ltd
Priority date: 2007-06-05
Filing date: 2007-06-05
Publication date: 2008-04-02
Anticipated expiration: 2017-06-05

Abstract

The utility model relates to a floating liquid level testing and controlling device, which has key techniques that a plastic pipe is arranged on a floor which is vertical to the inner wall of a pond; a float is arranged in the plastic pipe; a sliding guide rail is arranged on the plastic pipe of the inner wall of the pond corresponding to the outer wall of the pond; a heavy hammer is arranged on the sliding guide rail; a chain wheel is arranged on a position corresponding to the edge of the pond; both ends of the sliding guide rail are respectively provided with a limit switch; one end of a steel wire is connected with the float and the other end of the steel wire is connected to the heavy hammer through the chain wheel. When the liquid level is rising, the heavy hammer descends. When water level is up to control liquid level, the heavy hammer contacts a lower end limit switch; water pump runs and the liquid level descends; when the heavy hammer contacts an upper end limit switch, the water pump stops running, which is repeating. The key techniques effectively prevent that the pond is emptied and the pump idles, can enable that the liquid level is kept under control and realizes effective testing and control of the liquid level.

Description

A kind of cursory Level Detection control device

One, technical field

The utility model relates to the Level Detection control device that a kind of coal preparation plant uses.

Two, background technology

The most of wet coal preparation that adopts of China coal preparation plant, so, in whole coal separation process, wherein exist, to the detection of liquid level and control one of the work that also is absolutely necessary as miscellaneous ponds such as reservoir, production ponds.At present, on-the-spot a lot of to the detection means of liquid level, supersonic liquid level detection, magnetic floating-ball fluid level transmitter, photoelectricity Level Detection are arranged, but, often the degree of accuracy to above pick-up unit impacts because there being coal slime to the Level Detection of black water in coal preparation plant, these pick-up units often because rugged environment presents the failure rate height, can't work orderly in coal preparation plant's Level Detection.

Three, summary of the invention

The technical problems to be solved in the utility model is: design a kind of novel liquid level detection control apparatus, detect and the index liquid level to compare the cursory mechanical hook-up of Simple and Reliable, realize the detection of coal position, and the running of controlling water pump by easy electric control system is with the control liquid level.

Implementation procedure of the present utility model is such: perpendicular to plastic tube of floor mounted, corresponding to plastic tube a pulley bracket is installed on the coboundary of pond on pool inner wall, pulley is installed on the pulley bracket; On the outer wall of pond, a rail plate is installed, a limit switch is installed respectively at the rail plate two ends corresponding to the plastic tube on the pool inner wall; In plastic tube, establish one cursory, on rail plate, establish a weight, have steel wire one end be connected in cursory on, the other end is connected on the weight through the pulley on the pulley bracket.

Control section of the present utility model is very simple, and the colleague technician all can design, and does not do detailed description at this.

Good effect of the present utility model is: simple in structure, control is reliable, and liquid level is remained in the controlling level; Prevented that the pond from being fanned the air, the phenomenon of pump idle running; The black water that can avoid the post driver to cause because of tank drain is untimely overflows, or the pond is fanned the air, and the situation of pump zero load work still realizes effective detection and control to liquid level.

Four, description of drawings

Accompanying drawing 1 is the synoptic diagram of installing and using of the present utility model.

Five, embodiment

As shown in Figure 1, on 12 inwalls of pond,, on 12 coboundarys of pond, a pulley bracket 6 is installed, because of pool wall has certain width corresponding to plastic tube 1 perpendicular to PVC plastic tube 1 of floor mounted, guarantee cursory 2 with weight 9 vertical operations, Yi Bian be provided with a pulley 5 on the pulley bracket 6; Corresponding to the plastic tube on 12 inwalls of pond 1 rail plate 10 being installed on 12 outer walls of pond, a limit switch 8,11 is installed respectively at rail plate 10 two ends; For guaranteeing that cursory 2 guarantee vertical operation with the liquid level lifting in pond 12, be positioned in the plastic tube 1 cursory 2, for guaranteeing that weight 9 guarantees vertical operation along with cursory 2 motion is same, weight 9 is located on the rail plate 10, have steel wire 7 one ends to be connected on cursory 2, the other end is connected on the weight 9 through two pulleys 5 on the pulley bracket 6.The lifting of the weight 9 of lifting decision band pointer that can be by liquid level is to show the height of liquid level.

Principle of work of the present utility model is: when liquid level raises, the weight 9 of band pointer descends, when water level high when controlling liquid level, the weight 9 of band pointer touches the limit switch 11 of rail plate 10 lower ends, limit switch 11 is connected control circuit, and motor rotation drives water pump and begins draining, liquid level descends thereupon, cursory 2 descend, and the weight 9 of band pointer rises, when liquid level drops to minimum control position, the weight 9 of band pointer touches the limit switch 8 of rail plate 10 upper ends, limit switch 8 is connected control circuit, and motor shuts down, and water pump stops draining, liquid level stops to descend, along with production is carried out, black water constantly enters the pond, and liquid level begins again to rise, so repeatedly, realized that liquid level rises and falls up and down in range of control.

Claims

1. cursory Level Detection control device, it is characterized in that: on the inwall of pond (12) perpendicular to a plastic tube of floor mounted (1), on the coboundary of pond (12), a pulley bracket (6) is installed, pulley (5) is installed on the pulley bracket (6) corresponding to plastic tube (1); On the outer wall of pond, a rail plate (10) is installed, a limit switch (8,11) is installed respectively at rail plate (10) two ends corresponding to the plastic tube on the pool inner wall (1); Establish in plastic tube (1) one cursory (2), establish the weight (9) of a band pointer on rail plate (10), have a steel wire (7) one ends to be connected on cursory (2), the other end is connected on the weight (9) of band pointer through the pulley (5) on the pulley bracket.