CN2747557Y

CN2747557Y - Mechanical type material sensor

Info

Publication number: CN2747557Y
Application number: CN 200420080945
Authority: CN
Inventors: 梁武
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-08
Filing date: 2004-11-08
Publication date: 2005-12-21
Anticipated expiration: 2014-11-08

Abstract

The utility model relates to a mechanical type material level measuring device which is suitable for material level measuring of large material warehouse like steel plants, metallurgical plants, etc. The utility model provides a mechanical type material level measuring device which is tried to overcome the affects of unsteady specific gravity, large difference in material level amplitude, etc. The utility model adapts the measuring environment and realizes the possibility of continuous and automatic measurement. Please refer to the attached diagram. The material level measuring device is as below. Firstly, when the material feeder feeds material to the material bin, the material will be provided with an initial speed. When the material powder enters the back attack blade (5) in the material bin from the material inlet (2), the blade generates vibration because of the attacking of the material. The amplitude of the vibration is decided by the initial speed of the material. When the initial speed increases, the amplitude of the blade increases correspondingly. So the amplitude of the material powder will not have big difference and the material powder will be loaded more fully. The material level is higher than the lowest point of the blade on top, the blade will be applied with resistant force and stops. The hall sensor which connects with the bearing end on top will send out signal for material full. This stands for material has been filled fully and the transmission device can be powered off.

Description

Mechanical type material sensor

Technical field

The mechanical type material level that the utility model relates to level gauging in the large-scale filler bins such as being used for steel mill and smeltery is seen the survey device.

Background technology

(highly being 6-10 rice generally) material level of the large-scale iron powder feed bin that present domestic steel mill uses is measured and is adopted capacitance type sensor and ultrasonic sensor to detect mostly.Capacitance type sensor is in false alarm very easily in overcast and rainy season, poor reliability; Ultrasonic sensor is convenient but effect is undesirable, because the high low amplitude of expecting in same feed bin is different, the reflection that ultrasound wave produces can not be determined by unique, so also impracticable.Though occurred some new measuring methods in recent years, as methods such as infrared ray, foil gauges, but (dust is many in the feed bin because environment is poor, friction seriously waits influence), these methods or equipment exist short, poor reliability and defective such as cost height in serviceable life, so the feeding warehouse material level of steel mill and smeltery detects and is still urgent problem so far.

Summary of the invention

The utility model is to provide a kind of mechanical type material-level detecting device, and it is indefinite to make every effort to make this device to overcome proportion, and the influence such as differ greatly of material level amplitude adapts to measurement environment, realizes the reliability of continuous automatic measurement.

Purpose employing technical scheme is this mechanical type material level detecting sensor in the realization, it has the support that places in the feed bin, has a rotating mechanism on the support at least, this rotating mechanism comprises: fixing inner support, be fixed on answer bullet and rectangular paddle on the support, a Hall element, its vibration source is from the powder that advances.

The utility model has following advantage than known technology: the technical program adopts the mechanical vibration principle, detects the fiduciary level height, satisfies material level detection requirement in the large-sized silo fully; This apparatus structure is simple and reliable, implements to detect under the big situation inferior of high temperature, powder, and on the rotating mechanism mounting bracket, itself produces mechanical vibration and can solve caking, dust attachment issue, and it is useful for granular material, the usefulness of shot-like particle feed bin material level detection.

Description of drawings

Fig. 1 is a mechanical type level sensor organigram.

Fig. 2 is the left view of mechanical type level sensor.

Fig. 3 and Fig. 4 are a rotating mechanism synoptic diagram.

Fig. 5 and Fig. 6 are the structural representation (wherein 1 and 3 are incoming line, and 2 and 4 is output line) of Hall element.

Knot and accompanying drawing provide further describing of enforcement below, and referring to Fig. 1, it is existing in smeltery and steel mill that this material level detects Installing support (3) in the feed bin (1) that use the field, the Sheng of the approximate feed bin (1) of the support body length of general support (3) The material degree of depth is evenly distributed with blade at the support body of support (3), and the number of blade can be set according to the height of feed bin, Establishing blade in the present embodiment has 3, and the support body of support (3) is the hollow pipe structure, with weight reduction, improves rigidity, Support can select steel to make, and connects the connecting rod (8) of feed bin (1) and installing support (3), and connecting rod (8) is Hollow pipe structure with weight reduction, improves rigidity,, each rotating mechanism I on the support (3) as seen from Figure 1.

The structure of rotating mechanism (I) is referring to Fig. 3, and it includes support (3), sliding bearing (4), and blade (5), Returning spring (6), inner support (7) and Hall element (9), its vibration source is from the charging of feed bin.

Specific implementation method

Referring to accompanying drawing, this material-level detecting device is as described below: at first, when feeder in feed bin during feeding, material just has initial velocity, when powder enters repercussion blade (5) in the feed bin from charging aperture (2), blade is because the impact of being expected produces vibration, and the amplitude of vibration has the initial velocity decision of powder, when initial velocity increases, the amplitude of blade also can correspondingly increase, the amplitude of powder just can not differ greatly, and what powder will be adorned relatively expires, when material level surpasses the minimum point of blade topmost, blade will be subjected to resistance and stop, and the Hall element that is connected with the top bearing end will be exported the full signal of material, and at this moment the explanation material has been filled, should shut conveyor.This apparatus structure is simple, and cost is low and effect is obvious, and reliability and stability are all high.

Claims

1, a kind of mechanical type material level detecting sensor, it is characterized in that having the support that places bin wall, has a rotating mechanism on the support at least, this mechanism includes inner support, be fixed on the spring on the inner support, rack-mount sliding bearing and the Hall element that is installed on the sliding bearing end cap of the top.

2, according to the described mechanical type material level of claim 1 detecting sensor, it is characterized in that described rotating mechanism has following structure: have fixing support and inner support, the sliding bearing that is fixed on the support is arranged, be fixed on spring and rectangular paddle on the inner support in addition.

3,, it is characterized in that described vibration source is the powder from feeding warehouse according to the described mechanical type material level of claim 1 detecting sensor.

4,, it is characterized in that impacting blade and producing vibration by the powder of carrying according to the described mechanical type material level of claim 3 detecting sensor.