Online total water sample detection system

Abstract

The utility model relates to an on-line total water sample detection system which comprises a division device (10), a sample front end and rear end processor (20), a sample dryer (30), a material discarding mechanism (40), a servo triaxial (50) and a controller (60), and the division device is used for simultaneously and uniformly dividing two test samples; the sample front-end processor and the sample rear-end processor are used for pre-processing and post-processing the sample; the sample dryer is used for heating and drying a sample; the third servo shaft is used for carrying the samples from the division device to the processors at the front end and the rear end of the samples, carrying the samples to the sample dryer after weighing and flattening, and carrying the samples to the processors at the front end and the rear end of the samples for pouring after drying; and the controller is electrically connected with and controls the operation of the division device, the sample front-end and rear-end processor, the sample dryer, the material discarding mechanism and the servo three-axis respectively, so that the automatic detection of the sample moisture is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of coal detection, in particular to an online full water sample detection system. Background Art

[0002] Coal is a widely used energy resource, and its moisture content has an important impact on the quality and application of coal. The moisture in coal mainly exists in two forms: internal water and external water. Internal water refers to the moisture in the molecular structure, while external water is the adsorbed water on the surface of coal. The moisture content in coal directly affects the combustion performance, calorific value and stability of coal during storage and transportation. Therefore, accurate determination of the total moisture in coal is of great significance for evaluating coal quality, selecting fuels and optimizing coal utilization.

[0003] However, the existing technology for detecting the moisture content of coal generally involves manual sampling and laboratory testing and analysis. This method has the disadvantages of high cost, large human interference factors, and low sample representativeness. In order to reduce or eliminate these problems, new technologies and devices are needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the above-mentioned prior art and provide an online full water sample detection system, which can improve work efficiency, reduce manual errors, improve the reliability of coal quality data, reduce energy consumption and costs, etc.

[0005] More specifically, according to one aspect of the utility model, there is provided an online full water sample detection system, characterized in that it comprises:

[0006] A reduction device (10), a sample front-end and back-end processor (20), a sample dryer (30), a discarding mechanism (40), a servo three-axis (50) and a controller (60)

[0007] The shrinking device (10) is configured to shrink and evenly separate two test samples simultaneously;

[0008] The sample front-end and back-end processors (20) are configured to weigh and flatten the sample from the reduction device (10), and to weigh and pour the dried sample;

[0009] The sample dryer (30) is configured to heat and dry the sample;

[0010] The discarding mechanism (40) is connected to the shrinking device (10) and the sample front-end and back-end processors (20), and is used to receive and process discarded materials from the shrinking device (10) and the sample front-end and back-end processors (20);

[0011] The servo triaxial (50) is configured to transport the sample from the dividing device (10) to the sample front-end and back-end processors (20), transport it to the sample dryer (30) after weighing and flattening, and transport it to the sample front-end and back-end processors (20) for unloading after drying; and

[0012] The controller (60) is electrically connected to and controls the operations of the shrinking device (10), the sample front-end and back-end processors (20), the sample dryer (30), the discarding mechanism (40) and the servo three-axis (50), thereby realizing automatic detection of sample moisture.

[0013] According to an embodiment of the utility model, the shrinking device (10) comprises two shrinking units (11) for shrinking two samples simultaneously.

[0014] According to the implementation scheme of the utility model, the sample front-end and back-end processor (20) includes a weighing part (21), a buffer part (22), a flattening part (23) and a pouring part (24), wherein the pouring part (24) is connected to the discarding mechanism (40) via a pipeline (70).

[0015] According to an embodiment of the utility model, the material pouring part (24) includes a locking unit (241), a cleaning unit (242) and a mechanical arm (243).

[0016] According to an embodiment of the utility model, the sample dryer (30) includes a plurality of heating units (31), each of which includes a heater (311) and a ventilation system (312), thereby being able to independently heat the sample and ventilate the heating unit to control the heating atmosphere.

[0017] According to an embodiment of the present invention, each heating unit further comprises a door opening and closing device (313).

[0018] According to an embodiment of the present utility model, the controller (60) is a PLC control system.

[0019] According to an embodiment of the present invention, the ventilation system (312) provides nitrogen to the heating unit (31).

[0020] Compared with the prior art, the implementation scheme of the utility model can achieve beneficial technical effects:

[0021] 1. Improve work efficiency: The fully automatic detection system can automatically complete the sample preparation and analysis process, greatly reducing manual operation time, shortening the test cycle, and improving work efficiency.

[0022] 2. Reduce human errors: Since the system can automatically complete the sample analysis process, it reduces human intervention, reduces operational errors and subjective errors, and improves the accuracy of the results.

[0023] 3. Improve the reliability of coal quality data: The fully automatic detection system has a real-time monitoring function, which can continuously monitor samples, reduce the fluctuation of sample analysis results, and improve the reliability and authenticity of data.

[0024] 4. Reduce energy consumption and costs: The traditional manual coal testing process requires a lot of energy, consumables and manpower input, while the fully automatic testing system can achieve rational use of resources and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an online full water sample detection system according to the implementation scheme of the utility model;

[0026] Figure 2 It is a structural schematic diagram of a subtraction device of an online full water sample detection system according to an implementation scheme of the utility model;

[0027] Figure 3 is a schematic diagram of the structure of the sample front-end and back-end processors of the online full water sample detection system according to the implementation scheme of the utility model; and

[0028] Figure 4 It is a structural schematic diagram of a sample dryer of an online full water sample detection system according to an implementation scheme of the utility model. DETAILED DESCRIPTION

[0029] In order to clearly illustrate the scheme in the utility model, preferred embodiments are given below and described in detail with reference to the accompanying drawings. The following description is essentially only exemplary and is not intended to limit the application or use of the present disclosure. It should be understood that in all the drawings, corresponding reference numerals represent the same or corresponding parts and features.

[0030] Figure 1The overall structure schematic diagram of the online full water sample detection system according to the embodiment of the utility model. As shown in the figure, the online full water sample detection system of the embodiment may include a contraction device (10), a sample front end and back end processor (20), a sample dryer (30), a discarding mechanism (40), a servo three-axis (50) and a controller (60); the contraction device (10), the sample front end and back end processor (20) and the sample dryer (30) are basically arranged on the same platform. The servo three-axis (50) is arranged in front of the contraction device (10), the sample front end and back end processor (20) and the sample dryer (30) for automating the operation of these devices. The discarding mechanism (40) is arranged below the contraction device (10) and the sample front end and back end processor (20), and is connected to the contraction device (10) and the sample front end and back end processor (20) through a pipeline (70), and is used to receive the discarded material from the contraction device (10) and the sample front end and back end processor (20). The controller (60) is electrically connected to the shrinking device (10), the sample front-end and back-end processors (20), the sample dryer (30), the discarding mechanism (40) and the servo three-axis (50) respectively, and is used to control the operation of these devices / equipment, thereby realizing automatic detection of sample moisture.

[0031] Coal sample reduction is the process of dividing the uniformly mixed coal sample into several parts with the same properties during the coal sample preparation process, leaving a part of it as the coal sample for further preparation or as a laboratory coal sample, and discarding the rest. This process is one of the important steps in coal sample preparation, and its purpose is to reduce a large amount of original coal sample to the weight required for coal sample analysis, while keeping the physical properties and chemical composition of the coal sample the same as the original coal sample.

[0032] Figure 2 The present invention is a schematic diagram of the structure of the reduction device of the online full water sample detection system according to the embodiment of the utility model. As shown in the figure, the reduction device (10) of the embodiment may include two reduction units (11), a feeding unit (12), a tensioner (13), a motor (14), a discharge port (15), etc. The reduction device may adopt a vibration feeding method, and the tensioner (13) is used to ensure the smooth and uniform feeding. The reduction unit (11) may be a rotary reduction unit, which is reduced under the action of a motor. The principle of rotary reduction is well known in the art and will not be described here. The two reduction units reduce two samples at the same time, and the detection and analysis of the two samples can ensure the scientificity and accuracy of the analysis results. The reduced sample is transmitted to the sample tray (80) through the discharge port, and a rotating sample receiving mechanism may be provided below the discharge port, and the sample tray is provided thereon. After receiving the sample, the sample tray is taken away by the servo three-axis (50) to carry out the next operation. The remaining sample after reduction is transported to the discarding mechanism (40) through a pipeline.

[0033] Figure 3The sample front-end and back-end processors of the online full water sample detection system according to the embodiment of the utility model are schematically shown. Referring to the accompanying drawings, the sample front-end and back-end processors (20) are configured to weigh and flatten the sample from the reduction device (10), and to weigh and pour the dried sample. More specifically, the sample front-end and back-end processors (20) of the embodiment may include four parts, namely, a weighing part (21), a buffer part (22), a flattening part (23), and a pouring part (24) in order from bottom to top.

[0034] The weighing part (21) is provided with a scale for weighing, such as an electronic scale of one ten-thousandth, one hundred thousandth or even one millionth, and a suitable scale can be provided as required. For example, the servo three-axis (50) can place the sample tray (80) (containing samples or empty trays) in the weighing part (21) for weighing, and then take it away after weighing. The cache part (22) is provided with a multi-layer storage plate, which can be used to store multiple sample trays (80) (containing or not containing samples) to achieve a cache effect. The flattening part (23) is provided to flatten the samples in the sample tray (80), and there is no special restriction on its structure. For example, a conventional scraping device that can be extended and retracted in the vertical direction and moved in the horizontal direction can be used. The pouring part (24) is provided on the upper part of the sample front end and the back end processor, and is used to process the sample after detection. More specifically, the pouring section (24) may include a locking unit (241), a cleaning unit (242) and a mechanical arm (243). The locking unit is disposed at the top end of the mechanical arm, and can lock the sample tray (80) placed thereon. After being locked, the mechanical arm can drive the locking unit (241) to tilt and flip to realize pouring. The sample tray (80) after pouring faces the cleaning unit (242). The cleaning unit (242) is a cleaning mechanism driven by a motor, and for example, a sponge is disposed at its end to wipe the sample tray. The bottom of the pouring section (24) is connected to a pipeline (70), and the poured sample is transmitted to the discarding mechanism (40) through the pipeline.

[0035] Figure 4 The structure diagram of the sample dryer of the online full water sample detection system according to the embodiment of the utility model is shown in the figure. As shown in the figure, the sample dryer (30) of the embodiment can include multiple heating units (31). Eight heating units are shown in the figure, which are arranged in a unified box. Each heating unit can heat the sample independently.

[0036] More specifically, each heating unit may include a heater (311), a ventilation system (312), and a door opening and closing device (313), thereby being able to independently heat the sample and ventilate the heating unit to control the heating atmosphere. The heater (311) may be, for example, an electric heater, which may heat the sample in the sample tray (80). The ventilation system (312) is connected to a gas source, for example, it may provide an atmosphere such as nitrogen, air, etc. to the heating unit (31). The ventilation system may include an air-controlled valve such as a solenoid valve arranged on a pipeline to control the circulation and flow rate of the gas. The door opening and closing device (313) includes a rotating shaft arranged at the upper end of the door of each heating unit (31), and the rotating shaft can be automatically opened and closed by electrical control.

[0037] In summary, each heating unit can be heated, temperature controlled, nitrogen ventilated, and ventilated independently to ensure the stability of the total moisture analysis; each space of each heating unit is designed to be heat-insulated, and heating multiple samples at the same time will not affect the test results. In addition, the ventilation system (312) can use a gas control valve to quickly switch between different gas sources such as nitrogen / air to achieve heating under different heating atmospheres.

[0038] The discarding mechanism (40) is connected to the sample reduction device (10) and the sample front-end and back-end processors (20) through a pipeline (70), and is used to receive the sample after sample preparation from the sample reduction device (10) and the discarded material after detection in the sample front-end and back-end processors (20). For example, the discarded material can be processed by using the vacuum suction principle to avoid the discarded material from flying and polluting the environment.

[0039] The servo three-axis (50) is configured to access and transport the sample tray and the discarding mechanism (40) from the dividing device (10), the sample front-end and back-end processors (20) and the sample dryer (30). There is no particular limitation on its structure. For example, a conventional servo three-axis can be used, which may include an X, Y, and Z axis mechanism, a servo motor, a reducer, etc. The controller (60) may be a conventional industrial PLC control system, which is configured to be electrically connected to the dividing device (10), the sample front-end and back-end processors (20), the sample dryer (30), the discarding mechanism (40) and the servo three-axis (50), thereby controlling these components and transmitting and processing data information, thereby realizing automatic detection of sample moisture.

[0040] During operation, a certain mass of full-moisture coal sample is taken by a manipulator and poured into the reduction device (10), and two test samples with constant mass are reduced. The sample tray (80) is used to take samples respectively, and then the servo three-axis (50) is used to transport the test samples and put them into the flattening part (23) of the sample front-end and back-end processors (20) for flattening (the other sample can be temporarily placed in the buffer part (22)). After flattening, it is transported to the weighing part (21) for weighing, and the weighed weight data is transmitted to the controller (60). After that, the weighed sample tray (80) (with the sample) is placed in the sample dryer (30) by the servo three-axis (50) and heated in a nitrogen flow atmosphere, the heating temperature is about 105-110 degrees Celsius, and the heating time is 20-40 minutes. After heating, it is cooled to room temperature in a nitrogen flow atmosphere, and the sample is transported to the weighing part (21) by the servo three-axis (50) for weighing again, and the weighed weight data is transmitted to the controller (60). Finally, the weighed sample is transported to the material discharging section (24) for disposal. The processing of another sample is basically the same. The weight difference of the same sample before and after heating is the water content of the sample.

[0041] The utility model adopts a nitrogen drying method to determine the moisture content in coal. The principle is to pass high-purity nitrogen gas, heat the sample to evaporate the moisture inside, and then calculate the moisture content according to the mass change of the sample.

[0042] The work flow of the utility model equipment is fully automatic detection, and the detection process does not require manual intervention, which provides a guarantee for the accuracy of the detection results of the whole water sample. In addition, the test results of two parallel samples are averaged to obtain the final test result. The use of parallel samples makes the test results more scientific and reliable.

[0043] In summary, the above contents are only embodiments of the present invention, which are only used to illustrate the principle of the present invention, and are not used to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An online full water sample detection system, characterized in that: include: A reduction device (10), a sample front-end and back-end processor (20), a sample dryer (30), a discarding mechanism (40), a servo three-axis (50) and a controller (60) The shrinking device (10) is configured to shrink and evenly separate two test samples simultaneously; The sample front-end and back-end processors (20) are configured to weigh and flatten the sample from the reduction device (10), and to weigh and pour the dried sample; The sample dryer (30) is configured to heat and dry the sample; The discarding mechanism (40) is connected to the shrinking device (10) and the sample front-end and back-end processors (20), and is used to receive and process discarded materials from the shrinking device (10) and the sample front-end and back-end processors (20); The servo triaxial (50) is configured to transport the sample from the dividing device (10) to the sample front-end and back-end processors (20), transport it to the sample dryer (30) after weighing and flattening, and transport it to the sample front-end and back-end processors (20) for unloading after drying; and The controller (60) is electrically connected to and controls the operations of the shrinking device (10), the sample front-end and back-end processors (20), the sample dryer (30), the discarding mechanism (40) and the servo three-axis (50), thereby realizing automatic detection of sample moisture.

2. The online full water sample detection system as claimed in claim 1, characterized in that: The reduction device (10) comprises two reduction units (11) for reducing two samples simultaneously.

3. The online full water sample detection system as claimed in claim 1, characterized in that: The sample front-end and back-end processor (20) comprises a weighing part (21), a buffer part (22), a flattening part (23) and a material pouring part (24), wherein the material pouring part (24) is connected to a material discarding mechanism (40) via a pipeline (70).

4. The online full water sample detection system as claimed in claim 3, characterized in that: The material discharging section (24) comprises a locking unit (241), a cleaning unit (242) and a mechanical arm (243).

5. The online full water sample detection system as claimed in claim 1, characterized in that: The sample dryer (30) includes a plurality of heating units (31), each of which includes a heater (311) and a ventilation system (312), thereby being able to independently heat the sample and ventilate the heating unit to control the heating atmosphere.

6. The online full water sample detection system as claimed in claim 5, characterized in that: Each heating unit also includes a door opening and closing device (313).

7. The online full water sample detection system as claimed in claim 1, characterized in that: The controller (60) is a PLC control system.

8. The online full water sample detection system as claimed in claim 5, characterized in that: The ventilation system (312) provides nitrogen to the heating unit (31).

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