Automatic weighing and preparing system for mining emulsified liquid

Abstract

The utility model discloses a mining emulsified liquid automatic weighing and preparing system which comprises a liquid preparing box, a weighing sensor is arranged at the bottom of the liquid preparing box, the liquid preparing box is connected with an emulsified oil tank through a pipeline, a fourth explosion-proof electromagnetic valve is arranged between the liquid preparing box and the emulsified oil tank, and a second explosion-proof electromagnetic valve is arranged between the liquid preparing box and the emulsified oil tank. The liquid preparation tank is further connected with a clear water tank and an emulsion tank through pipelines, a first explosion-proof electric valve and a second explosion-proof electric valve are arranged on the pipeline of the clear water tank, a third explosion-proof electric valve and a fourth explosion-proof electric valve are arranged on the pipeline of the emulsion tank, and a centrifugal pump is connected between the pipeline of the clear water tank and the pipeline of the emulsion tank. Nodes of the centrifugal pump are respectively positioned between the third explosion-proof electric valve and the fourth explosion-proof electric valve and between the first explosion-proof electric valve and the second explosion-proof electric valve, so that the technical problem of inaccurate liquid preparation precision caused by dirt accumulation, part abrasion and the like in the using process through a volume metering mode in the prior art is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery, and particularly relates to a mine emulsion automatic weighing and liquid preparation system. Background Art

[0002] In the process of coal mine production, emulsion, as a key hydraulic transmission medium, the accuracy of its mixing concentration directly affects the service life of hydraulic equipment and the production cost of coal mine enterprises. The "Coal Mine Safety Regulations" stipulate that the mass fraction concentration of emulsion is generally 3% - 5%. If the concentration is too low, the hydraulic components will be directly eroded by water and rust, resulting in component failure and shortening the service life of the equipment; if the concentration is too high, the consumption of emulsion oil will increase, leading to an increase in production cost.

[0003] At present, the main methods for automatic emulsion mixing are: double-cylinder fixed-ratio automatic mixing system, self-acting emulsion automatic mixing system, automatic mixing system with a single-chip microcomputer as the control core, and automatic mixing system with a PLC as the control core. The latter two mostly use metering pumps to add and mix oil and water.

[0004] The disadvantages of the existing technology are: 1. Measurement accuracy problems, interference factors: The metering pump may be interfered by various factors during the measurement process, such as air bubbles, fouling, vibration, electromagnetic interference, etc., which will affect the measurement accuracy. Pump body wear: After long-term use, the pump body of the metering pump may be worn, which will also affect the accuracy of its liquid preparation.

[0005] 2. Maintenance cost, cleaning and maintenance: After the metering pump runs for a period of time, dirt may accumulate inside, and it needs to be cleaned and maintained regularly, which increases the maintenance cost. Wear parts replacement: The metering pump contains multiple wear parts inside, such as seals, bearings, etc. The damage of these parts may lead to a decline or failure of the pump performance.

[0006] 3. The emulsion oil and water are mixed in the pump box, and the diffusion time of the emulsion concentration is long. It is not easy to control the water addition and oil addition time, resulting in instantaneous non-constancy of the mixing concentration.

[0007] Therefore, how to develop a liquid preparation system with accurate concentration has been a difficult problem that technicians in this field have been thinking about. Content of the Utility Model

[0008] The purpose of the utility model is to provide a mine emulsion automatic weighing and liquid preparation system, which solves the technical problem that the method of controlling the input amount by volume measurement in the above-mentioned existing technology leads to inaccurate liquid preparation accuracy due to dirt accumulation and component wear during use.

[0009] The technical solution adopted by the utility model to solve its technical problems is:

[0010] A mine-used emulsion automatic weighing and liquid preparation system, comprising: a liquid preparation tank, a weighing sensor is provided at the bottom of the liquid preparation tank, the liquid preparation tank is connected to an emulsion oil tank through a pipeline, a fourth explosion-proof solenoid valve is arranged between the liquid preparation tank and the emulsion oil tank, the liquid preparation tank is also respectively connected to a clear water tank and an emulsion tank through pipelines, a first explosion-proof electric valve and a second explosion-proof electric valve are arranged on the pipeline of the clear water tank, a third explosion-proof electric valve and a fourth explosion-proof electric valve are arranged on the pipeline of the emulsion tank, a centrifugal pump is connected between the pipelines of the clear water tank and the emulsion tank, the nodes of the centrifugal pump are respectively located between the third explosion-proof electric valve and the fourth explosion-proof electric valve and between the first explosion-proof electric valve and the second explosion-proof electric valve, and the weighing sensor, the fourth explosion-proof solenoid valve, the first explosion-proof electric valve, the second explosion-proof electric valve, the third explosion-proof electric valve and the fourth explosion-proof electric valve are electrically connected to a controller.

[0011] In the mine-used emulsion automatic weighing and liquid preparation system of the present utility model, the emulsion oil tank is connected to an emulsion oil barrel through a pipeline, a third explosion-proof solenoid valve is further arranged on the pipeline between the emulsion oil tank and the liquid preparation tank, a first explosion-proof solenoid valve and a second explosion-proof solenoid valve are arranged on the pipeline between the emulsion oil tank and the emulsion oil barrel, a gear pump is connected to the pipeline between the first explosion-proof solenoid valve and the second explosion-proof solenoid valve, the other end of the gear pump is communicated with the pipeline between the third explosion-proof solenoid valve and the fourth explosion-proof solenoid valve, and the first explosion-proof solenoid valve, the second explosion-proof solenoid valve, the third explosion-proof solenoid valve and the gear pump are electrically connected to a controller.

[0012] In the mine-used emulsion automatic weighing and liquid preparation system of the present utility model, the liquid preparation tank comprises a liquid preparation tank outer frame, a liquid preparation tank body is arranged inside the liquid preparation tank outer frame, weighing sensors are arranged at the four corners of the liquid preparation tank body, and a universal support device is arranged between the liquid preparation tank body and the weighing sensors.

[0013] In the mine-used emulsion automatic weighing and liquid preparation system of the present utility model, the universal support device comprises a double-headed connecting stud, a universal adjusting foot cup is arranged at the top of the double-headed connecting stud, and a locking nut is arranged in the middle of the double-headed connecting stud.

[0014] In the mine-used emulsion automatic weighing and liquid preparation system of the present utility model, detachable limit fixing blocks are arranged at the four side edges of the liquid preparation tank outer frame, and the limit fixing blocks prevent the liquid preparation tank body from shaking during transportation.

[0015] In the mine-used emulsion automatic weighing and liquid preparation system of the present utility model, a jacking and fixing device is arranged between the bottom of the liquid preparation tank body and the liquid preparation tank outer frame, and the jacking and fixing device enables the weight of the liquid preparation tank body during transportation not to act on the weighing sensor.

[0016] An automatic weighing and liquid - preparing system for mine - used emulsion. A liquid - level sensor of the tank body is arranged inside the liquid - preparing tank body, and the liquid - level sensor of the tank body is electrically connected to a controller.

[0017] An automatic weighing and liquid - preparing system for mine - used emulsion. Liquid - level sensors are arranged inside the emulsion oil tank, the clean - water tank and the emulsion tank, and the liquid - level sensors are all electrically connected to the controller.

[0018] The beneficial effects of the present utility model are as follows: An automatic weighing and liquid - preparing system for mine - used emulsion is proposed. By arranging a weighing sensor at the bottom of the liquid - preparing tank, the weight control of the liquid - preparing stock solution is realized. By adding step by step, the weight of each stock solution can be accurately judged, thus improving the prior art that controls by flow rate and the component non - uniformity caused by unstable flow rate. Through the parallel connection of pipelines and the control of control valves, a centrifugal pump can be shared to realize the addition of clean water and the back - extraction of emulsion. At the same time, the centrifugal pump can also be used for stirring. Through the cooperation of a gear pump and a control valve, the addition of emulsion and the liquid addition from the emulsion oil barrel to the emulsion oil tank are realized. By arranging a universal support device, the liquid - preparing tank body can be stably supported. By arranging a limit positioning block and a jacking fixing device, the liquid - preparing tank body will not collide during the installation and transportation process, and the weight will not be continuously applied to the weighing sensor during the transportation process. Description of the Drawings

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0020] Figure 1 is a schematic diagram of an embodiment of the present utility model;

[0021] Figure 2 is a working flow chart of an embodiment of the present utility model;

[0022] Figure 3 is a schematic diagram of the liquid - preparing tank of an embodiment of the present utility model;

[0023] Figure 4 is a schematic diagram of the universal support device of an embodiment of the present utility model. Detailed Embodiments

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] As Figures 1-4 shown, a mine-used emulsion automatic weighing and liquid preparation system includes: a liquid preparation tank 1, the bottom of the liquid preparation tank 1 is provided with a weighing sensor 2, the liquid preparation tank 1 is connected to an emulsion oil tank 3 through a pipeline, a fourth explosion-proof solenoid valve S4 is arranged between the liquid preparation tank 1 and the emulsion oil tank 3, the liquid preparation tank 1 is also respectively connected to a clear water tank 6 and an emulsion tank 5 through pipelines, a first explosion-proof electric valve M1 and a second explosion-proof electric valve M2 are arranged on the pipeline of the clear water tank 6, a third explosion-proof electric valve M3 and a fourth explosion-proof electric valve M4 are arranged on the pipeline of the emulsion tank 5, a centrifugal pump 9 is connected between the pipelines of the clear water tank 6 and the emulsion tank 5, the nodes of the centrifugal pump 9 are respectively located between the third explosion-proof electric valve M3 and the fourth explosion-proof electric valve M4 and between the first explosion-proof electric valve M1 and the second explosion-proof electric valve M2, and the weighing sensor 2, the fourth explosion-proof solenoid valve S4, the first explosion-proof electric valve M1, the second explosion-proof electric valve M2, the third explosion-proof electric valve M3 and the fourth explosion-proof electric valve M4 are electrically connected to a controller.

[0026] In a preferred embodiment of the present utility model, the emulsion oil tank 3 is connected to an emulsion oil barrel 4 through a pipeline, a third explosion-proof solenoid valve S3 is further arranged on the pipeline between the emulsion oil tank 3 and the liquid preparation tank 1, a first explosion-proof solenoid valve S1 and a second explosion-proof solenoid valve S2 are arranged on the pipeline between the emulsion oil tank 3 and the emulsion oil barrel 4, a gear pump 7 is connected to the pipeline between the first explosion-proof solenoid valve S1 and the second explosion-proof solenoid valve S2, the other end of the gear pump 7 is communicated with the pipeline between the third explosion-proof solenoid valve S3 and the fourth explosion-proof solenoid valve S4, and the first explosion-proof solenoid valve S1, the second explosion-proof solenoid valve S2, the third explosion-proof solenoid valve S3 and the gear pump 7 are electrically connected to a controller.

[0027] In a preferred embodiment of the present utility model, the liquid preparation tank 1 includes a liquid preparation tank outer frame 101, a liquid preparation tank body 102 is arranged inside the liquid preparation tank outer frame 101, weighing sensors 2 are arranged at the four corners of the liquid preparation tank body 102, and a universal support device 8 is arranged between the liquid preparation tank body 102 and the weighing sensors 2.

[0028] In a preferred embodiment of the present utility model, the universal support device 8 includes a double-headed connecting stud 801, the top of the double-headed connecting stud 801 is provided with a universal adjusting foot cup 803, and a locking nut 802 is arranged in the middle of the double-headed connecting stud 801.

[0029] In a preferred embodiment of the present utility model, detachable limit fixing blocks 104 are arranged at the four side edges of the outer frame 101 of the liquid distribution tank, and the limit fixing blocks 104 prevent the liquid distribution tank body 102 from shaking during transportation.

[0030] In a preferred embodiment of the present utility model, a jacking fixing device 103 is arranged between the bottom of the liquid distribution tank body 102 and the outer frame 101 of the liquid distribution tank, and the jacking fixing device 103 enables the weight of the liquid distribution tank body 102 not to act on the weighing sensor 2 during transportation.

[0031] In a preferred embodiment of the present utility model, a tank body liquid level sensor 105 is arranged inside the liquid distribution tank body 102, and the tank body liquid level sensor 105 is electrically connected to the controller.

[0032] In a preferred embodiment of the present utility model, liquid level sensors are arranged in the emulsifying oil tank 3, the clean water tank 6 and the emulsified liquid tank 5, and the liquid level sensors are all electrically connected to the controller.

[0033] Among them, the weighing sensor is used to monitor the weight of the emulsifying oil and water in the liquid distribution tank in real time, automatically calculate the required weights of the oil and water according to the preset mixing ratio concentration, so as to accurately control the mixing ratio concentration.

[0034] The gear pump 7 and each explosion-proof solenoid valve are used for the filling of emulsifying oil, and the centrifugal pump 9 and each explosion-proof electric ball valve are used for the filling of clean water, the mixing and stirring and discharging of emulsified liquid. By opening and closing the solenoid valves and electric ball valves at different positions, the transportation of the required liquid is realized.

[0035] When adding emulsifying oil to the emulsifying oil tank 3, open the first explosion-proof solenoid valve S1 and the third explosion-proof solenoid valve S3, and close the second explosion-proof solenoid valve S2 and the fourth explosion-proof solenoid valve S4; when transporting emulsifying oil to the liquid distribution tank 1, open the second explosion-proof solenoid valve S2 and the fourth explosion-proof solenoid valve S4, and close the first explosion-proof solenoid valve S1 and the third explosion-proof solenoid valve S3; when transporting clean water to the liquid distribution tank, open the first explosion-proof electric valve M1 and the fourth explosion-proof electric valve M4, and close the second explosion-proof electric valve M2 and the third explosion-proof electric valve M3; when mixing and stirring the emulsified liquid, open the second explosion-proof electric valve M2 and the fourth explosion-proof electric valve M4, and close the first explosion-proof electric valve M1 and the third explosion-proof electric valve M3; when transporting the emulsified liquid to the emulsified liquid tank 5, open the second explosion-proof electric valve M2 and the third explosion-proof electric valve M3, and close the first explosion-proof electric valve M1 and the fourth explosion-proof electric valve M4.

[0036] Liquid distribution process

[0037] When the system boots up, the control box reads the liquid level sensor data of the clean water tank 6, the emulsion liquid tank 5, and the emulsion oil tank 3 to determine whether liquid preparation is required at this time and whether liquid can be prepared. The liquid preparation flowchart is as Figure 2 shown.

[0038] When the liquid level sensors detect that the amount of clean water and the amount of emulsion oil are sufficient, and the liquid level in the emulsion pump liquid tank 5 drops to the set low liquid level, the equipment starts liquid preparation. When it is detected that there is already prepared emulsion liquid in the liquid preparation tank 1, the emulsion liquid in the liquid preparation tank 1 is first drained into the emulsion liquid tank 5, and then liquid preparation is carried out. First, the solenoid valve of the oil circuit from the emulsion oil tank 3 to the liquid preparation tank 1 is opened, and then the controller sends a signal to the start switch of the pump to turn on the gear pump 7. At the same time, the signal of the weighing sensor 2 is collected in real time. When the weight of the emulsion oil reaches the set value, the gear pump 7 and the solenoid valve are closed. After standing for a certain time, the value of the weighing sensor 2 is read again to calculate the actual water consumption required.

[0039] Then the controller sends a signal to turn on the electric ball valve and the centrifugal pump 9 of the clean water waterway for liquid preparation. When the required clean water is close to the actual water consumption, the centrifugal pump 9 is closed. After standing for a certain time, the value of the weighing sensor 2 is read, and the centrifugal pump 9 replenishes water to it, so as to reach the set concentration value.

[0040] To prevent uneven mixing of emulsion oil and water, at this time, the electric ball valve of the mixing and stirring pipeline and the centrifugal pump 9 are turned on to circulate the emulsion liquid in the liquid preparation tank 1, so as to achieve the purpose of uniform mixing. Then the electric ball valve of the drainage pipeline is opened to transport the emulsion liquid to the emulsion liquid tank 5. In this way, liquid preparation and liquid delivery are repeated. When the liquid level in the emulsion liquid tank 5 rises to the set upper limit value, the procedures of liquid replenishment and liquid preparation are completed.

[0041] The weighing sensors 2 are arranged at the four corners of the bottom of the outer frame 101 of the liquid preparation tank to ensure the stable support of the liquid preparation tank body 102. When the liquid preparation tank body 102 is hoisted into the outer frame 101 of the liquid preparation tank from above, 4 limit fixing blocks 104 are installed on the outer frame 101 of the liquid preparation tank. The limit fixing blocks 104 can make the liquid preparation tank body 102 better contact with the universal support device 8. At the same time, a jacking and fixing device 103 is set. During transportation, the liquid preparation tank body 102 is separated from the universal support device 8. When preparing liquid, the limit fixing blocks 104 are removed, and the universal support device 8 is loosened, so that the universal support device 8 bears the liquid preparation tank body 102.

[0042] To prevent the bottom of the liquid preparation tank body 102 from being uneven, resulting in point contact between the support surface and the liquid preparation tank body 102, causing the weighing sensor 2 to be subjected to eccentric load, affecting the weighing accuracy and service life. Therefore, the universal support device 8 is used to support the liquid preparation tank body 102 to ensure surface contact with the liquid preparation tank body 102 and ensure the weighing accuracy.

[0043] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0044] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0045] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

Claims

1. An automatic weighing and liquid preparation system for mine emulsion, characterized in that, Including: A liquid preparation tank (1), the bottom of the liquid preparation tank (1) is provided with a weighing sensor (2), the liquid preparation tank (1) is connected to an emulsifying oil tank (3) through a pipeline, a fourth explosion-proof solenoid valve (S4) is arranged between the liquid preparation tank (1) and the emulsifying oil tank (3), the liquid preparation tank (1) is also respectively connected to a clear water tank (6) and an emulsion tank (5) through pipelines, a first explosion-proof electric valve (M1) and a second explosion-proof electric valve (M2) are arranged on the pipeline of the clear water tank (6), a third explosion-proof electric valve (M3) and a fourth explosion-proof electric valve (M4) are arranged on the pipeline of the emulsion tank (5), a centrifugal pump (9) is connected between the pipelines of the clear water tank (6) and the emulsion tank (5), the nodes of the centrifugal pump (9) are respectively located between the third explosion-proof electric valve (M3) and the fourth explosion-proof electric valve (M4) and between the first explosion-proof electric valve (M1) and the second explosion-proof electric valve (M2), and the weighing sensor (2), the fourth explosion-proof solenoid valve (S4), the first explosion-proof electric valve (M1), the second explosion-proof electric valve (M2), the third explosion-proof electric valve (M3) and the fourth explosion-proof electric valve (M4) are electrically connected to a controller.

2. The automatic weighing and liquid preparation system for mine emulsion according to claim 1, characterized in that, The emulsifying oil tank (3) is connected to an emulsifying oil barrel (4) through a pipeline, a third explosion-proof solenoid valve (S3) is also arranged on the pipeline between the emulsifying oil tank (3) and the liquid preparation tank (1), a first explosion-proof solenoid valve (S1) and a second explosion-proof solenoid valve (S2) are arranged on the pipeline between the emulsifying oil tank (3) and the emulsifying oil barrel (4), a gear pump (7) is connected to the pipeline between the first explosion-proof solenoid valve (S1) and the second explosion-proof solenoid valve (S2), the other end of the gear pump (7) is communicated with the pipeline between the third explosion-proof solenoid valve (S3) and the fourth explosion-proof solenoid valve (S4), and the first explosion-proof solenoid valve (S1), the second explosion-proof solenoid valve (S2), the third explosion-proof solenoid valve (S3) and the gear pump (7) are electrically connected to a controller.

3. The automatic weighing and liquid preparation system for mine emulsion according to claim 2, wherein The liquid preparation tank (1) includes a liquid preparation tank outer frame (101), a liquid preparation tank body (102) is arranged inside the liquid preparation tank outer frame (101), weighing sensors (2) are arranged at the four corners of the liquid preparation tank body (102), and a universal support device (8) is arranged between the liquid preparation tank body (102) and the weighing sensors (2).

4. The automatic weighing and liquid preparation system for mine emulsion according to claim 3, characterized in that, The universal support device (8) includes a double-headed connecting stud (801), a universal adjusting foot cup (803) is arranged at the top of the double-headed connecting stud (801), and a locking nut (802) is arranged in the middle of the double-headed connecting stud (801).

5. The automatic weighing and liquid preparation system for mine emulsion according to claim 3, characterized in that, Detachable limit fixing blocks (104) are arranged at the four side edges of the liquid preparation tank outer frame (101), and the limit fixing blocks (104) prevent the liquid preparation tank body (102) from shaking during transportation.

6. The automatic weighing and liquid preparation system for mine emulsion according to claim 5, characterized in that, A jacking fixing device (103) is arranged between the bottom of the liquid preparation tank body (102) and the liquid preparation tank outer frame (101), and the jacking fixing device (103) enables the weight of the liquid preparation tank body (102) during transportation not to act on the weighing sensors (2).

7. A kind of automatic weighing and liquid preparation system for mine emulsion according to claim 3, characterized in that, A tank liquid level sensor (105) is arranged inside the liquid preparation tank body (102), and the tank liquid level sensor (105) is electrically connected to the controller.

8. The automatic weighing and liquid preparation system for mine emulsion according to claim 1, wherein Liquid level sensors are arranged inside the emulsion oil tank (3), the clean water tank (6) and the emulsion liquid tank (5), and the liquid level sensors are all electrically connected to the controller.

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