Measuring device for paste thickener

Abstract

The utility model discloses a measuring device for a paste thickener, which belongs to the technical field of paste measurement and comprises a paste thickener body, the paste thickener body comprises a conical barrel and a cylindrical barrel arranged above the conical barrel, and an ultrasonic mud layer interface instrument is arranged below the conical barrel. The measuring device comprises a cylindrical barrel, measuring assemblies are arranged on the two sides of the interior of the cylindrical barrel, the measuring assemblies are symmetrically arranged, each measuring assembly comprises a bamboo joint rod and a plurality of pressure sensors, a plurality of bamboo joint blocks are arranged on each bamboo joint rod at equal intervals, the bamboo joint blocks are hollow, and threaded holes are formed in one sides of the bamboo joint blocks. By adopting the structure, the measuring device for the paste thickener is simple in structure and convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of paste measurement, in particular to a measuring device for a paste thickening machine. Background Art

[0002] In metal mines, concentrating the low-concentration tailings slurry produced by the concentrator into a paste is the first key link in the tailings paste disposal technology. The mainstream equipment currently used is the paste thickener. The mud layer height is a key parameter for the operation of the paste thickener, which has an important impact on the underflow concentration of the paste thickener and directly determines whether the underflow discharged by the paste thickener can reach the paste state. Therefore, the mud layer height of the paste thickener must be detected in order to dynamically adjust the operating parameters of the paste thickener.

[0003] The traditional weight hammer method for measuring the mud layer height of the paste thickener is simple to operate, but the measurement accuracy is not high. The main reason is that the density of the weight hammer is significantly different from the density of the mud layer, which causes the weight hammer to sink too deep into the mud layer. At present, a variety of mud layer height detection devices have been developed based on the weight hammer method principle, such as a device for measuring the mud layer height in flowing water with a weight hammer level meter (CN210180501U), and an automatic mud layer height measurement device and measurement method (CN109357725A), but the structure of this type of device is relatively complex and does not fundamentally improve the accuracy of mud layer height measurement. In addition, there is an ultrasonic mud layer interface meter, but it is affected by factors such as mud layer turbidity and changes in bottom mud layer density, and the measurement error and volatility are large. Therefore, developing a measuring device for paste thickeners to measure the height of the slurry mud layer in the thickener is of great significance to ensure the smooth application of mine tailings paste disposal technology. Utility Model Content

[0004] The utility model aims to provide a measuring device for a paste thickening machine, which has a simple structure and is easy to assemble.

[0005] To achieve the above-mentioned purpose, the utility model provides a measuring device for a paste thickener, including a paste thickener body, the paste thickener body including a conical cylinder and a cylindrical cylinder arranged above the conical cylinder, an ultrasonic mud layer interface meter is arranged below the conical cylinder, and measuring components are arranged on both sides of the interior of the cylindrical cylinder, the measuring components are symmetrically arranged, the measuring components include a bamboo rod and multiple pressure sensors, a plurality of bamboo blocks are equidistantly arranged on the bamboo rod, the bamboo blocks are hollow inside, and a threaded hole is arranged on one side of the bamboo block.

[0006] Preferably, the pressure sensor is arranged inside the bamboo block.

[0007] Preferably, a sleeve is arranged on the outside of the pressure sensor, a threaded wall is arranged on the outside of the sleeve, and a filling layer is arranged between the sleeve and the pressure sensor.

[0008] Preferably, the threaded wall matches the threaded hole.

[0009] Preferably, the ultrasonic mud layer interface meter and the pressure sensor are both connected to a computer wirelessly.

[0010] Preferably, a threaded block is provided on the bamboo block, and the threaded block matches the threaded hole.

[0011] Therefore, the utility model adopts a measuring device for a paste thickening machine with the above structure, which has the following beneficial effects:

[0012] (1) A pressure sensor is provided to monitor the change of mortar bulk density in all height directions of the paste thickener in real time and accurately calculate the height of the mortar mud layer;

[0013] (2) The ultrasonic mud interface meter and the pressure sensor are used in a complementary manner. The ultrasonic mud interface meter provides accurate interface position, and the pressure sensor provides relevant information on mud density and height, providing more comprehensive mud layer monitoring data. Secondly, the data from the pressure sensor is used to calibrate and verify the measurement results of the ultrasonic mud interface meter, thereby improving the accuracy and reliability of the measurement.

[0014] (3) Simple structure and easy to assemble.

[0015] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an embodiment of a measuring device for a paste thickening machine of the utility model;

[0017] Figure 2 It is a top view of an embodiment of a measuring device for a paste thickening machine of the utility model;

[0018] Figure 3 This is a schematic diagram of the placement of a pressure sensor in an embodiment of a measuring device for a paste thickening machine of the utility model;

[0019] Figure 4 A graph showing the relationship between the thickener height and the mortar bulk density of an embodiment of a measuring device for a paste thickener according to the utility model;

[0020] Reference numerals

[0021] 1. Conical cylinder; 2. Cylindrical cylinder; 3. Bamboo rod; 4. Bamboo block; 5. Pressure sensor; 6. Threaded hole; 7. Threaded block; 8. Sleeve; 9. Threaded wall; 10. Filling layer; 11. Ultrasonic mud layer interface instrument; 12. Computer. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Reference Figure 1-3 A measuring device for a paste thickener includes a paste thickener body, the paste thickener body includes a conical cylinder 1 and a cylindrical cylinder 2 arranged above the conical cylinder 1, an ultrasonic mud layer interface meter 11 is arranged below the conical cylinder 1, and measuring components are arranged on both sides of the cylindrical cylinder 2. The measuring components are symmetrically arranged, and the measuring components include a bamboo rod 3 and a plurality of pressure sensors 5. The bamboo rod 3 is fixedly connected to the cylindrical cylinder 2, which can be welded or connected in other ways. A plurality of bamboo blocks 4 are equidistantly arranged on the bamboo rod 3, the bamboo blocks 4 are hollow inside, and a threaded hole 6 is arranged on one side of the bamboo block 4.

[0025] Specifically, the pressure sensor 5 is placed according to actual needs. It is not necessary to place the pressure sensor 5 in every bamboo block 4. The bamboo block 4 where the pressure sensor 5 is not required is provided with a threaded block 7, which matches the threaded hole 6 to prevent mortar from entering the inside of the bamboo block 4 and affecting subsequent use. When placing the pressure sensor 5, the threaded block 7 is removed and the pressure sensor 5 is placed inside the bamboo block 4. A sleeve 8 is provided on the outside of the pressure sensor 5, and a threaded wall 9 is provided on the outside of the sleeve 8. The threaded wall 9 matches the threaded hole 6, so that the pressure sensor 5 is threadedly connected to the bamboo block 4. A filling layer 10 is provided between the sleeve 8 and the pressure sensor 5, and a filler is provided in the filling layer 10, which can be filled with mud and sand and used after consolidation to prevent the pressure sensor 5 from shifting.

[0026] The ultrasonic mud layer interface meter 11 and the pressure sensor 5 are both connected to the computer 12 via wireless, and the computer 12 receives data transmitted by the ultrasonic mud layer interface meter 11 and the pressure sensor 5 .

[0027] The machinery, parts and equipment in the present invention all adopt conventional models in the prior art and will not be described in detail here.

[0028] The method of measuring the height by the pressure sensor 5 is:

[0029] The pressure sensor 5 is placed inside the bamboo block 4 as needed. The pressure sensor 5 is wirelessly connected to the computer 12. The computer 12 obtains the monitoring data of the pressure sensor 5 and obtains the mortar bulk density change curve at the height of the paste thickener by conversion. The pressure sensor 5 is placed symmetrically, and the middle value is taken when different data are obtained to improve the measurement accuracy.

[0030] According to the height h-bulk density γ curve and the difference in bulk density with water, the mud layer height of the mortar can be obtained.

[0031] According to the pressure value of the pressure sensor 5 at any height, the bulk density of the mortar at any height can be obtained, which can be calculated by the following formula:

[0032]

[0033] Where: P i is the mortar pressure value at height, unit: Pa; h i is the arbitrary height value of the deep cone thickener, in m; γ i is the height h i Mortar bulk density value, unit kN / m 3 .

[0034] In order to verify the effectiveness of the measuring device in the utility model, a specific example is given:

[0035] The overflow weir height H of a paste thickener in a mine is 15.00m. When the thickener is filled with clean water, the mud layer pressure is 145Pa. The bamboo block height is 10cm. A pressure sensor 5 is fixed every 1.0m in the height direction of the paste thickener. A total of 14 pressure sensors 5 are arranged, and the wires of the pressure sensors 5 are connected to the computer 12.

[0036] The change in bulk density is obtained by reading the values ​​of 14 pressure sensors 5 and calculating using the formula as shown in Table 1 below:

[0037] Table 1 Parameter measurement results of a deep cone thickener in a mine

[0038]

[0039] pass Figure 4 It can be seen that when the height h of the paste thickener is less than 6m, the maximum bulk density of the mortar is 10.18kN / m 3 , the specific gravity of water is 10.00kN / m 3 , we can know that the density difference at this height is 0.18kN / m 3 When the height value is greater than 6m, the bulk density difference is greater than 0.68kN / m 3 In summary, when the thickener height h = 6m, that is, the mud layer height h 0 =Hh=15m-6m=9m.

[0040] Therefore, the utility model adopts a measuring device for a paste thickener with the above structure, which has a simple structure and is easy to assemble.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A measuring device for a paste thickener, comprising a paste thickener body, wherein the paste thickener body comprises a conical cylinder and a cylindrical cylinder arranged above the conical cylinder, characterized in that: An ultrasonic mud layer interface meter is arranged below the conical cylinder body, and measuring components are arranged on both sides of the cylindrical cylinder body. The measuring components are symmetrically arranged and include a bamboo rod and multiple pressure sensors. A plurality of bamboo blocks are equidistantly arranged on the bamboo rod. The bamboo block is hollow inside, and a threaded hole is arranged on one side of the bamboo block.

2. A measuring device for a paste thickener according to claim 1, characterized in that: The pressure sensor is arranged inside the bamboo block.

3. A measuring device for a paste thickener according to claim 2, characterized in that: A sleeve is arranged outside the pressure sensor, a threaded wall is arranged outside the sleeve, and a filling layer is arranged between the sleeve and the pressure sensor.

4. A measuring device for a paste thickener according to claim 3, characterized in that: The threaded wall matches the threaded hole.

5. A measuring device for a paste thickener according to claim 4, characterized in that: The ultrasonic mud layer interface instrument and the pressure sensor are both connected to the computer wirelessly.

6. A measuring device for a paste thickener according to claim 1, characterized in that: The bamboo block is provided with a threaded block, and the threaded block matches the threaded hole.

Images