CN-121977964-A - Method for on-line detection of ore pulp concentration and ore pulp concentration sensor

Abstract

Pulp concentration detection is always a difficult problem in the industries of mineral separation, metallurgy and the like. In the prior art, a spiral weighing tube weighing mode is adopted to continuously detect the concentration of ore pulp. The technology has a plurality of defects and can not meet the field requirements. The invention adopts the newly designed pressure-bearing ore pulp container and the fully newly designed torque-ore pulp concentration detection system, has the characteristics of simple structure, reliable work and accurate detection, overcomes the defects of the prior art, and realizes the high-precision ore pulp concentration on-line detection.

Inventors

• WANG RENHUI
• WANG XIUCHEN
• XIE CAILING

Assignees

• 平顶山煦辉科技有限公司

Dates

Publication Date

20260505

Application Date

20260320

Claims (2)

1. 1. A pulp concentration sensor is characterized by comprising a sensor shell, a pressure-bearing pulp container and a torque sensor, wherein the inner volume of the pressure-bearing pulp container is fixed, a pulp outlet pipe is arranged at the upper part of one side of the pressure-bearing pulp container, a pulp inlet pipe is arranged at the lower part of the same side of the pressure-bearing pulp container, the torque sensor is arranged on the pulp outlet pipe, the torque sensor is fixed on the inner wall of the sensor shell, the pulp inlet pipe can freely move when led out from an opening of the sensor shell, the pressure-bearing pulp container is fixed on the sensor shell through the torque sensor arranged on the pulp outlet pipe, so that a fixed force arm exists between the gravity of the pressure-bearing pulp container and the torque sensor, and the torque sensor detects the gravity of the pressure-bearing pulp container and the torque formed between the gravity of the pressure-bearing pulp container and the fixed force arm of the torque sensor.
2. 2. And establishing a corresponding relation between the pulp concentration value and the torque value through the pulp concentration sensor, thereby realizing a method for detecting the pulp concentration by utilizing the torque.

Description

Method for on-line detection of ore pulp concentration and ore pulp concentration sensor Technical Field The invention belongs to the field of sensor detection, and particularly relates to an ore pulp concentration sensor. Background The concentration and flow rate of ore pulp before feeding can directly influence the flotation effect, and are key feedforward factors for automatic control of the flotation process. Only if the concentration and flow before feeding of ore pulp are continuously, accurately and stably measured, the flotation process can be effectively regulated. Pulp concentration detection is always a difficult problem in the industries of mineral separation, metallurgy and the like. The existing pulp concentration detection equipment mainly comprises an ultrasonic concentration meter and a nuclear concentration meter, and because the ultrasonic concentration meter and the nuclear concentration meter are used for detecting the pulp concentration, the factors such as components, precipitation, bubbles and the like are affected, the two concentration meters are inaccurate in measurement in field use, the error is large, and the nuclear concentration meter has radioactivity and belongs to dangerous articles. After CN1046040a in 1989 discloses a continuous detection and control device for weight type pulp concentration, several patents of utility model were developed to improve the device for weight type pulp concentration. The core of the device is a spiral pipe type concentration detection balance, and the concentration detection of ore pulp is realized by detecting the weight of the ore pulp in the spiral pipe. The spiral tube can be accurately weighed when not connected with the outside. However, when the concentration of the ore pulp is continuously detected, the spiral pipe is connected with an external pipeline, even if the connection of the hose is adopted, the influence of additional force on the weighing of the spiral pipe is difficult to accurately eliminate, so that the measurement accuracy of the concentration of the ore pulp is not high, and the requirements of occasions such as intelligent flotation and the like cannot be met. Therefore, a pulp concentration sensor with higher accuracy and safety and reliability is needed to meet the field requirements. Disclosure of Invention 1. The technical problems to be solved are as follows: aiming at the defects of the prior art, the invention provides an ore pulp concentration sensor, which solves the problems in the background art. 2. The technical scheme is as follows: The invention discloses a pulp concentration sensor, which is characterized by comprising a sensor shell, a pressure-bearing pulp container and a torque sensor, wherein the inner volume of the pressure-bearing pulp container is fixed, a pulp outlet pipe is arranged at the upper part of one side of the pressure-bearing pulp container, a pulp inlet pipe is arranged at the lower part of the same side of the pressure-bearing pulp container, the torque sensor is arranged on the pulp outlet pipe and is fixed on the inner wall of the sensor shell, the pulp inlet pipe can freely move when being led out from an opening of the sensor shell, the pressure-bearing pulp container is fixed on the sensor shell through the torque sensor arranged on the pulp outlet pipe, so that a fixed moment arm exists between the gravity center of the pressure-bearing pulp container and the torque sensor, and the torque sensor detects the gravity of the pressure-bearing pulp container and the torque formed by the gravity center of the pressure-bearing pulp container to the fixed moment arm of the torque sensor. And after the ore pulp enters from the ore pulp inlet pipe and fills the pressure-bearing ore pulp container, the ore pulp flows out of the ore pulp concentration sensor from the ore pulp outlet pipe. After the pressure-bearing pulp container is filled with pulp, the change of the pulp concentration causes the weight change of the pulp filled in the pressure-bearing pulp container, and the weight change of the pulp can be continuously detected by the torque sensor in a form of torque change due to the existence of the fixed force arm. Therefore, the corresponding relation between the pulp concentration value and the torque value is established through the pulp concentration sensor, and the method for detecting the pulp concentration by utilizing the torque is realized. Advantageous effects Compared with the prior art, the invention has the advantages that: 1. The present invention has a significantly different detection format than the pulp concentration detection device in the reference or other similar devices. The weight of the fixed-volume ore pulp is detected by the device for detecting the concentration of the ore pulp in the comparison file or other similar ore pulp, and the detection error is larger because the device is extremely easy to be influenced by the additional force of the connecti