CN202854004U - Ore pulp concentration detection device - Google Patents

Abstract

The utility model provides an ore pulp concentration detection device, which comprises an ore pulp pipeline, a differential pressure transmitter, two connecting pipes with flanges and diaphragms, and is characterized in that the ore pulp pipelines The connecting pipes are arranged vertically at different heights on the inclined slurry pipeline, and the differential pressure transmitter is connected between the two flanges through a capillary. When the slurry pipeline stops transporting slurry, the slurry and solid particles in the connecting pipe can be vertically returned to the slurry pipeline under the action of gravity, which can effectively prevent the blockage caused by the retention of the slurry and solid particles in the connecting pipe, and ensure the differential pressure transmitter The actual pulp pressure difference can be obtained timely and indirectly to ensure the detection accuracy.

Description

A device for detecting pulp concentration

technical field

The utility model patent relates to a concentration detection device, in particular to a device for detecting the concentration of ore pulp, which belongs to the technical field of concentration meters.

Background technique

Most of the existing concentrators use radiation concentration meters, that is, γ-ray concentration meters. Since the γ-ray concentration meters use radioactive isotopes such as Se ₁₃₇ and Co ₆₀ as radiation sources, they are radioactive instruments. Various radioactive shielding measures must be strictly taken when using them. Strict operating procedures must also be formulated, and relevant maintenance personnel must also regularly check their bodies. Therefore, the production site is eager to replace the gamma-ray concentration meter with a non-radiation concentration meter. It is found that when the pulp concentration changes, the pulp density also changes significantly, so the pulp concentration can be measured by detecting the change of the pulp density. However, the relationship between the pulp concentration and the pulp density is not linear, and its change is related to the density of the ore in the pulp, so the processing of the detection signal needs to use an intelligent algorithm. For this reason, two pressure-taking points are set at a certain height difference h apart from the vertical rising pipeline of the slurry, and horizontal connecting pipes with flanges and diaphragms are respectively installed, and a differential pressure transmitter is connected between the two flanges. device to indirectly obtain the pulp pressure difference, the difference is h×p _j , p _j is the pulp density, since the height difference h is fixed, the differential pressure value is proportional to the change of the pulp density p _j , therefore, the measured The difference pressure value can be used to obtain the pulp density p _j , and the relationship between the change of the pulp density p _j and the pulp concentration D is as follows: D = (p _j -p _S ) p _g /(p _g -p _S ) p _j , the formula Among them, p _S is the density of water, P _g is the density of ore, and finally the pulp concentration can be obtained. However, when the slurry is not transported in the vertically rising pipeline, the horizontal connecting pipe and the diaphragm will retain minerals and cause blockage, making the obtained slurry pressure difference inaccurate and affecting the detection accuracy. Therefore, it is necessary to improve the prior art.

Contents of the invention

In order to eliminate the retention of ore pulp and improve the detection accuracy, the utility model provides a detection device for the concentration of ore pulp.

The utility model provides such a pulp concentration detection device, which includes a pulp pipeline, a differential pressure transmitter, two connecting pipes with flanges and The connecting pipes of the diaphragm are arranged vertically at different heights on the inclined pulp pipeline, and the differential pressure transmitter is connected through a capillary between the two flanges, so that when the pulp pipeline stops transporting pulp, the pulp and solid particles in the connecting pipe Under the action of gravity, it flows back into the slurry pipeline vertically without causing stagnation or blockage, ensuring detection accuracy.

The inclination angle of the slurry pipeline is 30°-60°, so that the connecting pipe with the flange and the membrane is arranged vertically while ensuring the normal flow of the slurry.

The diaphragm is arranged at the end of the flange to indirectly measure the pressure difference of the slurry.

The utility model has the following advantages and effects: adopting the above scheme, when the slurry pipeline stops transporting the slurry, the slurry and solid particles in the connecting pipe can be vertically returned to the slurry pipeline under the action of gravity, effectively preventing the slurry and solid particles from being connected The blockage caused by the stagnation in the pipe ensures that the differential pressure transmitter can obtain the actual pulp pressure difference in a timely and indirect manner, ensuring the detection accuracy.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

The pulp concentration detection device provided by the utility model includes a pulp pipeline 1, a differential pressure transmitter 7, two connecting pipes 2 and 5 with flanges and diaphragms, and the pulp pipeline 1 is set at an inclination of 45°, with flanges 3 and The connecting pipe 2 of the diaphragm is vertically arranged at the high position on the inclined pulp pipeline 1, and the connecting pipe 5 with the flange 6 and the diaphragm is vertically arranged at the low position on the inclined pulp pipeline 1, forming a height difference between the two positions h, the differential pressure transmitter 7 is connected between the two flanges 3 and 6 through the capillary 4, and the diaphragms on the two flanges 3 and 6 are all set at the ends of the flanges to indirectly measure the pressure difference of the slurry, and when When the slurry pipeline 1 stops transporting slurry, the slurry and solid particles in the connecting pipes 2 and 5 will flow back into the slurry pipeline 1 vertically under the action of gravity, so as not to cause retention and blockage, and ensure the detection accuracy, as shown in Figure 1.

Claims (3)

1. pulp density pick-up unit, the connecting pipe that comprises the flanged and diaphragm of ore slurry pipeline, differential pressure transmitter, two, it is characterized in that ore slurry pipeline is obliquely installed, two connecting pipes flanged and diaphragm are vertically set on respectively the differing heights position on the ore slurry pipeline of inclination, connect differential pressure transmitter by kapillary between two flanges.

2. pulp density pick-up unit according to claim 1, the angle of inclination that it is characterized in that described ore slurry pipeline is 30 °～60 °.

3. pulp density pick-up unit according to claim 1 is characterized in that described diaphragm arrangement is in the flange end.