Material level measuring device for mine filling stirring barrel

Abstract

The utility model provides a material level measuring device for a mine filling stirring barrel, and belongs to the technical field of mine filling detection equipment. The bottom of a device barrel body of the device is communicated with the bottom of a stirring barrel through a conveying pipe, a stirring shaft is arranged in the device barrel body, stirring blades are mounted on the stirring shaft through a middle bearing, an integrated electric lifting module and a liquid level meter are mounted at the top of the device barrel body, and the integrated electric lifting module is connected with the stirring shaft. In the measuring device, the liquid level meter is mounted at the top of the device in a waveguide mounting manner, so that the influence of false waves generated by stirring blades on the liquid level meter on echo judgment is avoided. The barrel body of the device is designed to be heightened, an upper lifting limit and a lower lifting limit are preset for the stirrer, and the stirrer rotates at a lower stirring speed, so that slurry condensation and slurry splashing and vortex formation caused by too high stirring speed can be avoided. According to the measuring device, the influence on the measuring precision of the liquid level meter is reduced to the greatest extent, and the reliability of liquid level monitoring of the slurry is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of mine filling detection equipment, in particular to a mine filling stirring barrel material level measuring device. Background Art

[0002] Filling operations are a critical step in the mining process. Low-concentration tailings slurry delivered from the concentrator undergoes a thickening process to become a high-concentration mortar. This mortar is then thoroughly mixed with cementitious materials and other additives in a mixing drum at a specific ratio before being transported to the filling site. When measuring the liquid level in the mixing drum, a radar or ultrasonic level gauge is typically installed above to monitor real-time changes in the liquid level. However, the high-speed operation of the agitator blades causes large fluctuations in the liquid level within the drum, resulting in splashing. If the level gauge is covered by splashed slurry, the monitoring data will be inaccurate, making it impossible to accurately monitor the situation within the drum, thereby affecting the mixing quality of the slurry. Furthermore, the addition of powdered cementitious materials can affect the level gauge's monitoring. Utility Model Content

[0003] Aiming at the deficiencies of the prior art, the utility model provides a material level measuring device for a mine filling and stirring barrel.

[0004] The measuring device comprises a device barrel, a material delivery pipe, a stirrer, a liquid level meter and a waveguide.

[0005] The bottom of the barrel of the device is connected to the bottom of the stirring barrel through a feeding pipe.

[0006] A stirrer and a liquid level gauge are installed on the top of the barrel of the device.

[0007] The agitator includes an integrated electric lifting module, a stirring shaft, an intermediate bearing and a stirring blade. The integrated electric lifting module is connected to the stirring shaft, the stirring shaft extends into the device barrel, and the stirring blade is installed on the stirring shaft through the intermediate bearing.

[0008] The distance between the liquid level meter and the side wall of the device barrel is approximately 1 / 6 to 1 / 4 of the diameter of the device barrel, and a waveguide is provided at the lower part, and the waveguide is located inside the device barrel.

[0009] The height of the device barrel body exceeds the height of the mixing barrel itself by at least 1 / 4, and the diameter of the device barrel body is 1 / 4 to 1 / 6 of the diameter of the mixing barrel.

[0010] The feeding pipe is gently tilted with an angle of 5 to 10 degrees. The bottom of the device barrel adopts the same tilt angle as the feeding pipe, and the bottom of the device barrel is higher than the bottom of the mixing barrel.

[0011] The feeding pipe has a length of 30-50 cm and a diameter of 20-30 cm.

[0012] The length of the stirring blade is 1 / 4 to 1 / 3 of the diameter of the device barrel, the stirring rate is 10 to 20 r / min, two stirring blades form a group, the two stirring blades are installed on the stirring shaft at 180 degrees, and two groups of stirring blades are installed on the stirring shaft, and the two groups of blades are 50 to 100 cm apart.

[0013] The device barrel body is provided with a preset lower limit for lifting the blade and a preset upper limit for lifting the blade. The preset lower limit for lifting the blade is the connection between the bottom of the device barrel body and the upper end of the feed pipe. The preset upper limit for lifting the blade is the height at which the top of the mixing barrel body is located. The mixing blade moves back and forth between the preset lower limit for lifting the blade and the preset upper limit for lifting the blade. The lifting process is controlled by an integrated electric lifting module with a lifting speed of 50~100cm / min. When the upper mixing blade reaches the preset upper limit for lifting the blade, it decelerates, stops moving upward and starts moving downward. When the lower mixing blade reaches the preset lower limit for lifting the blade, it decelerates, stops moving downward and starts moving upward.

[0014] The beneficial effects of the above technical solution of the utility model are as follows:

[0015] In this solution, a feed pipe connects the bottom of the device to the bottom of the mixing tank. Based on the principle of communicating vessels, the higher end of the liquid column naturally flows toward the lower end, achieving automatic balancing of the liquid level. This mechanism ensures that the liquid levels in the mixing tank and the device quickly reach equilibrium and maintain dynamic balance.

[0016] The agitator blades within the device are designed to move vertically within an area below the top of the mixing drum. This effectively prevents the slurry from splashing onto the level gauge when the blades touch the top. The rising and falling of the blades also effectively regulates and drives the flow of the slurry, promoting the exchange of slurries between the device and the mixing drum, and effectively preventing slurry accumulation and coagulation caused by high slurry concentration and reduced fluidity.

[0017] The stirring blades in the device are designed to stir at a relatively slow rate of 10-20 r / min to prevent slurry splashing caused by excessive stirring speed. This continuous and appropriate stirring can also delay the coagulation of the slurry.

[0018] The bottom of the mixing drum connects to the main body of the unit via a gently sloping feed pipe. After filling, any slurry remaining on the drum wall is removed along with the flushing water during pipe cleaning. This gently sloping structure also effectively prevents the accumulation of residual particles at the bottom of the unit, ensuring internal cleanliness and significantly minimizing the potential impact of residual material on unit performance.

[0019] The liquid level meter is installed at a distance of about 1 / 6 to 1 / 4 of the diameter of the device barrel from the side wall of the device barrel, and is installed in a waveguide to minimize the impact of the stirring blade on the material level monitoring, ensuring the accuracy and reliability of data measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of the mine filling mixing barrel material level measuring device of the present utility model.

[0021] Among them: 1-device barrel; 2-feeding pipe; 3-integrated electric lifting module; 31-stirring shaft; 32-intermediate bearing; 33-stirring blade; 4-liquid level meter; 5-wave guide tube; 6-slurry liquid level; 7-preset blade lifting lower limit; 8-preset blade lifting upper limit. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0023] The utility model provides a material level measuring device for a mine filling and stirring barrel.

[0024] like Figure 1 As shown, the device includes a barrel 1, a feed pipe 2, an agitator, a level meter 4 and a waveguide 5.

[0025] The bottom of the barrel 1 of the device is connected to the bottom of the mixing barrel through the feeding pipe 2;

[0026] The top of the barrel 1 of the device is equipped with an agitator and a liquid level gauge 4;

[0027] The stirrer includes an integrated electric lifting module 3, a stirring shaft 31, an intermediate bearing 32 and a stirring blade 33. The integrated electric lifting module 3 is connected to the stirring shaft 31, and the stirring shaft 31 extends into the device barrel 1. The stirring blade 33 is installed on the stirring shaft 31 through the intermediate bearing 32;

[0028] A waveguide 5 is provided at the lower portion of the liquid level gauge 4 , and the waveguide is located inside the device barrel 1 .

[0029] In the specific design, the bottom of the device barrel 1 is connected to the bottom of the mixing drum via a gently inclined feed pipe 2. To ensure smooth material flow, the feed pipe 2 is tilted at an angle of 8°. To improve feed efficiency, the pipe is designed to be a short 40 cm.

[0030] When selecting the stirring blades 33, consideration should be given to avoiding the generation of eddies during stirring. The size of the stirring blades 33 should be maintained between 1 / 4 and 1 / 3 of the barrel diameter. This design effectively prevents slurry coagulation at low stirring rates while also avoiding interference with the accuracy of material level monitoring. Two sets of stirring blades are installed, 50 cm apart.

[0031] In order to effectively drive the flow of slurry in the device without affecting the monitoring of the liquid level meter 4, the lifting range of the stirring blade 33 should be controlled between the preset blade lifting upper limit 8 and the preset blade lifting lower limit 7.

[0032] The liquid level meter 4 is installed at the top of the device barrel 1 and the installation distance from the container wall is about 1 / 5 of the container diameter. The waveguide 5 is installed to minimize the false waves caused by the interference of the stirring blades 33 and reduce the judgment of the liquid level meter 4 on the real slurry level echo.

[0033] This device only serves to monitor the slurry level in the mixing barrel. The height of the device barrel 1 is about 1 / 4 higher than the mixing barrel, and the diameter is about 1 / 5 of the mixing barrel. The specific design dimensions need to be adjusted according to actual conditions.

[0034] During the mixing operation, the filling slurry in the mixing barrel flows into the device barrel 1 through the feed pipe 2, and the liquid levels on both sides maintain dynamic balance. The stirring blades 33 in the device barrel 1 start to rotate under the control of the integrated electric lifting module 3. As the stirring blades 33 rise, once the upper stirring blades reach the preset blade lifting upper limit 8, the system will automatically stop their rise and start to descend. Conversely, when the lower stirring blades fall to the preset blade lifting lower limit 7, they will also automatically stop descending and rise, thus forming a continuous up and down cycle. During this process, the signal emitted by the liquid level meter 4 is reflected and effectively received after contacting the slurry surface. Using this principle, the system can measure the liquid level of the filling slurry.

[0035] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A mine filling mixing barrel material level measuring device, characterized in that: It includes the device barrel, feeding pipe, agitator, liquid level meter and waveguide; The bottom of the barrel of the device is connected to the bottom of the stirring barrel through a feeding pipe; An agitator and a liquid level gauge are installed on the top of the barrel of the device; The agitator includes an integrated electric lifting module, a stirring shaft, an intermediate bearing and a stirring blade, wherein the integrated electric lifting module is connected to the stirring shaft, the stirring shaft extends into the barrel of the device, and the stirring blade is installed on the stirring shaft through the intermediate bearing; A waveguide is provided at the lower part of the liquid level meter, and the waveguide is located in the barrel of the device.

2. The mine filling mixing barrel material level measuring device according to claim 1 is characterized in that: The height of the device barrel body exceeds the height of the mixing barrel itself by at least 1 / 4, and the diameter of the device barrel body is 1 / 4 to 1 / 6 of the diameter of the mixing barrel.

3. The mine filling mixing barrel material level measuring device according to claim 1 is characterized in that: The feeding pipe is gently inclined with an angle of 5 to 10 degrees. The bottom of the device barrel adopts the same inclination angle as the feeding pipe, and the bottom of the device barrel is higher than the bottom of the mixing barrel.

4. The mine filling mixing barrel material level measuring device according to claim 1, characterized in that: The feeding pipe has a length of 30-50 cm and a diameter of 20-30 cm.

5. The mine filling mixing barrel material level measuring device according to claim 1, characterized in that: The length of the stirring blade is 1 / 4 to 1 / 3 of the diameter of the device barrel, the stirring rate is 10 to 20 r / min, two stirring blades form a group, the two stirring blades are installed on the stirring shaft at 180 degrees, and two groups of stirring blades are installed on the stirring shaft, and the two groups of blades are 50 to 100 cm apart.

6. The mine filling mixing barrel material level measuring device according to claim 1, characterized in that: The device barrel is provided with a preset lower limit for lifting the blade and a preset upper limit for lifting the blade. The preset lower limit for lifting the blade is the connection between the bottom of the device barrel and the upper end of the feed pipe. The preset upper limit for lifting the blade is the height at which the top of the mixing barrel is located. The mixing blade moves back and forth between the preset lower limit for lifting the blade and the preset upper limit for lifting the blade, and the lifting speed is 50~100cm / min.

7. The mine filling mixing barrel material level measuring device according to claim 1, characterized in that: The distance between the liquid level meter and the side wall of the device barrel is 1 / 6 to 1 / 4 of the diameter of the device barrel.

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