Wet-type filter material performance detection platform

Abstract

The wet filter material detection platform is designed for solving the possible problems of a filter bag of a wet filter dust collector in actual production and application, and experimental parameters required in actual production are better integrated by the platform. The system comprises a visual semi-closed experiment unit, a data processing and analyzing unit and an environment control unit which are all arranged on a movable experiment platform, the lower end of the experiment platform is connected with a structure protection box body, and wheels are arranged on the protection box body to facilitate movement of the experiment platform. The platform simulates various relatively complex actual working environments through mutual cooperation of the modules in the experiment unit, and performs comprehensive testing on filter material performance parameters such as dust removal efficiency, cleaning period and service life of the filter material.

Description

Technical Field

[0001] The invention relates to the technical field of wet filter type dust collectors, in particular to a detection platform for wet filter material performance. Background Art

[0002] In order to meet the needs of my country's modernization construction, the mining of various mineral resources has been increased. The large amount of dust generated during the mining process is the primary problem we need to solve. The traditional single wet or dry dust collector cannot meet the more complex dust removal environment due to its structural characteristics, so the development of wet filter dust collector is one of the important directions in the field of dust removal equipment today. The core component of the wet filter dust collector is the wet filter bag, and the wet filter bag is also a consumable material in the wet filter dust collector. The dust removal efficiency, operating resistance, and air volume of the dust collector are important parameters for judging its performance. At present, for the test of filter material performance, filtration efficiency and resistance are the two most concerned indicators of filter material testing, but in actual production applications, the service life and cleaning cycle of the filter bag are also crucial. However, the existing wet filter bag detection platform for wet filter dust collectors has insufficient research on the use of filter bags in complex environments, cleaning methods, cleaning cycles and other parameters. Summary of the invention

[0003] The present invention is a wet filter material testing platform designed to solve various problems that may occur in wet filter dust collector filter bags in actual production applications. The platform better integrates the experimental parameters required in actual production.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention provides a wet filter material performance testing platform, comprising a visual semi-enclosed experimental unit, a data processing and analysis unit, and an environmental control unit, wherein the three main structural units are all placed on a movable experimental platform; the visual semi-enclosed experimental unit comprises two identical experimental systems for an experimental group and a control group, a double-door transparent experimental cabin, a retractable and closed filter material detection system, a dust-containing gas graded injection system, and a filter material cleaning and pH control system; a foldable experimental extension table is arranged on one side of the lower end of the movable experimental platform surface, the lower end of the experimental platform is connected to a structural protection box, and wheels are arranged on the protection box to facilitate the movement of the experimental platform.

[0006] The retractable closed filter material detection system includes a sealing cover and a vertical plate fixed on the experimental platform, the fixed vertical plate is connected to a hydraulic support and a movable sealing cover, the movable sealing cover is connected to the fixed sealing cover by a bidirectional slide rail, and the "C"-shaped sealing covers on both sides are interlocked with each other to form a sealed experimental cabin, and an opening is provided on the sealing cabin for easy replacement of the test filter material; a pull-out waste recovery device is placed under the sealing cabin; a detachable filter material clamp, a dust concentration sensor and a surface resistance sensor are provided inside.

[0007] The system comprises a compressed air collecting bag, a gas transmission pipeline, a high-efficiency air filter, a visual capacity graded feed bin, a supplementary air input pump, a vacuum pump, a gas flow control valve and a nozzle; the compressed air collecting bag is located inside a structural protection box under the experimental platform, and is connected to the gas flow control valve and the nozzle through a gas transmission pipeline, the visual capacity graded feed bin is located on the gas transmission pipeline, the high-efficiency air filter is arranged between the compressed air collecting bag and the visual capacity graded feed bin, the supplementary air input pump is arranged between the feed bin and the flow control valve, the flow control valve is a solenoid valve, the solenoid valve is connected to a data processing unit, and the vacuum pump is connected to a sealed experimental cabin through a retractable hose.

[0008] The grading silo includes three parts: a vibrating screening structure, a visual storage silo, and an exciting unloading device; the vibrating screening structure is located at the top of the grading silo, and a layered grading screen is arranged inside it. The screen levels are selected as 100 mesh, 300 mesh, 500 mesh and 800 mesh. The screens of different levels correspond to the different silos at the lower end one by one. Under the vibration of the electric spring, the dust of the corresponding level is transported to the inside of the visual silo. A transparent observation window with scale values ​​is arranged on the periphery of the visual silo; the exciting unloading device is arranged at the lower end of the grading silo, and its outer shell is a conical shell, and its inner shell is an electric spring vibrator.

[0009] The filter material cleaning and pH control system consists of a primary clean water tank, a water supply pipeline, an electronic flow meter, a secondary solution mixing water tank, a water pump, a replaceable reagent bottle, and a high-pressure atomizing nozzle; the primary clean water tank is placed inside a structural protection box at the lower end of the experimental platform and is connected to the secondary solution mixing water tank through a water supply pipeline and a water pump; the replaceable reagent bottle is placed at the upper end of the secondary mixing water tank; a magnetic rotor is arranged inside the secondary mixing water tank, and an electromagnetic induction disk is arranged outside the water tank, which drives the magnetic rotor to rotate when powered on to fully mix the solution; the water pump and the electronic flow meter are sequentially arranged on the water supply pipeline and connected to the high-pressure atomizing nozzle.

[0010] The environmental control unit is composed of a plurality of heating wires, a plurality of Peltier semiconductor coolers, a high-precision temperature sensor, and a PID controller; the heating wires and the Peltier semiconductor coolers are evenly distributed on the inner wall of the filter material experimental chamber, and the two are connected in parallel to ensure that they can work independently. Through appropriate control circuits, one of them can be selected or used simultaneously to meet specific temperature requirements; the high-precision temperature sensor is located inside the chamber, monitors the temperature in real time and feeds back to the PID controller; the PID controller is located on the left platform, electrically connected to the temperature sensor, and feedback-adjusts the current passing through the Peltier element and the heating wire according to the sensor to achieve the required temperature setting.

[0011] The data processing and analysis unit is electrically connected to the visual semi-enclosed experimental unit and the environmental control unit respectively, and controls the experimental parameters such as the liquid flow rate and the number of gas injections of the experimental unit through the processing terminal. At the same time, the data processing unit can monitor the working conditions of the grading silo and record the environmental parameters such as the ambient temperature of the experimental cabin and its adjustment time in real time.

[0012] Beneficial results of the present invention:

[0013] The present invention provides a wet filter material performance testing platform, which comprehensively tests the filter material performance parameters such as dust removal efficiency, cleaning cycle, and service life of the filter material through the cooperation of various modules inside the experimental unit. At the same time, a data processing unit is configured in the testing platform to record various experimental parameters and conduct comparative analysis.

[0014] The present invention sets two identical experimental platforms in the experimental unit, namely the experimental group and the control group, so as to better conduct control experiments and avoid experimental errors and contingencies. A foldable experimental extension table is set on the experimental platform, and wheels are set at the lower end of the platform. Such a structural design can make the invention have better spatial adaptability.

[0015] The "C"-shaped sealing covers on both sides interlock with each other to form a sealed test chamber, which can provide a stable experimental environment for the test unit and ensure the accuracy of measuring experimental parameters such as dust removal efficiency. The dust concentration sensor and the surface resistance sensor are set in the sealed test chamber at the same time. The surface resistance sensor can monitor the dust adhesion on the surface of the filter material. The cooperation between the two can effectively avoid the misjudgment of the filter material's filtration performance due to excessive dust adhesion on the filter material surface, which reduces the filter material's filtration efficiency.

[0016] Different levels of screens are set in the visual capacity grading feeding bin, and the different levels of screens correspond to the corresponding bins at the lower end. By replacing screens with different meshes, dust of different particle sizes can be selected to compare the capture ability of the filter material for dust of different particle sizes. The degree of attachment of dust of different particle sizes to the filter material can also be compared to determine parameters such as the cleaning cycle of different filter materials.

[0017] The different functions of the experimental system can be realized by changing the type of solution in the reagent bottle. For example, acid and alkali solutions can be placed in the reagent bottle to adjust the pH of the environment; or different types of cleaning agents can be placed in the reagent bottle to clean the filter material in the experiment. The invention sets up a more complete environmental temperature control system, which can control the environmental temperature more accurately. The setting of the cold and hot dual circulation system can quickly simulate the stable temperature environment required under working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a wet filter material performance testing platform of the present invention;

[0019] Figure 2This is a schematic diagram of the external structure of the visible capacity graded feed bin;

[0020] Figure 3 This is a cross-sectional view of the interior of the visible capacity graded feed bin;

[0021] Figure 4 This is a schematic diagram of the sealed experimental cabin structure;

[0022] Figure 5 This is a workflow diagram of a wet filter material performance testing platform;

[0023] In the figure, 1-double-door transparent experimental cabin, 2-movable experimental platform, 3-folding experimental extension table, 4-structural protection box, 5-fixed sealing cover, 6-fixed vertical plate, 7-hydraulic support, 8-movable sealing cover, 9-filter material replacement window, 10-pull-out waste recovery device, 11-detachable filter material clamp, 12-dust concentration sensor, 13-surface resistance sensor, 14-compressed air collection bag, 15-gas transmission pipeline, 16-high-efficiency air filter, 17-visible capacity classification feed bin, 18-supplementary air input pump , 19-vacuum pump, 20-gas flow control valve, 21-nozzle, 22-vibration screening structure, 23-visual storage bin, 24-excitation feeding device, 25-primary clean water tank, 26-water pipeline, 27-electronic flow meter, 28-secondary solution mixing water tank, 29-water pump, 30-replaceable reagent bottle, 31-high-pressure atomizing nozzle, 32-magnetic rotor, 33-heating wire, 34-Peltier semiconductor refrigerator, 35-high-precision temperature sensor, 36-PID controller, 37-data processing unit. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] like Figure 1 The structure diagram of a wet filter material performance testing platform of the present invention includes: a double-door transparent experimental cabin 1, a movable experimental platform 2, a foldable experimental extension table 3, a structural protection box 4, wheels are arranged under the box, and a data processing and analysis unit 37. The box also includes modules such as a retractable closed filter material detection system, a dust-containing gas graded injection system, a filter material cleaning and pH control system, and an environmental control unit. Through the cooperation of multiple groups of modules, better integration of experimental parameters required in actual production is achieved, and wet cleaning is used instead of conventional filter material cleaning methods.

[0026] The retractable closed filter material detection system includes a sealing cover 5 and a vertical plate 6 fixed on the experimental platform, the fixed vertical plate is connected with a hydraulic support 7 and a movable sealing cover 8, the movable sealing cover 8 is connected to the fixed sealing cover 5 through a bidirectional slide rail, and the "C"-shaped sealing covers on both sides are interlocked with each other to form a sealed test cabin, a filter material replacement window 9 is arranged on the sealed cabin; a pull-out waste recovery device 10 is arranged under the sealed cabin; a detachable filter material clamp 11, a dust concentration sensor 12 and a surface resistance sensor 13 are arranged inside the cabin.

[0027] The dust-containing gas graded injection system includes: a compressed air collecting bag 14 is connected to a movable sealing cover 8 through an air pipeline 15, and a high-efficiency air filter 16, a supplementary air input pump 18 and a gas flow control valve 20 are sequentially arranged on the air pipeline 15 to achieve filtering of the air in the air bag, compensation after feeding and control of the gas flow; the visual capacity grading silo 17 is arranged above the movable sealing cover 8 and connected to the air pipeline 15 to achieve the function of dust feeding; a gas flow control valve 20 nozzle 21 is installed at the end of the pipeline, and the vacuum pump 19 is connected to the experimental sealing cabin through a retractable hose.

[0028] The visual capacity grading feed bin 17 includes three parts: a vibrating screening structure 22, a visual storage bin 23 and an exciting feeding device 24; the vibrating screening structure is located at the top of the grading bin 17, and a layered grading screen is arranged inside it, and the screen levels are selected as 100 mesh, 300 mesh, 500 mesh and 800 mesh. The screens of different levels correspond to the different bins at the lower end one by one, and the dust of the corresponding level is transported to the inside of the visual storage bin 23 under the vibration of the electric spring. A transparent observation window with scale values ​​is arranged on the periphery of the visual storage bin 23; the exciting feeding device 24 is arranged at the lower end of the grading bin 17, and its outer shell is a conical shell, and its inner shell is an electric spring exciter, which is convenient for quickly inputting dust into the gas pipeline 15.

[0029] The filter material cleaning and pH control system includes: a primary clean water tank 25 is arranged inside the structural protection box at the lower end of the experimental platform, and is connected to a secondary solution mixing water tank 28 through a water supply pipeline 26; the replaceable reagent bottle 30 is arranged at the upper end of the secondary solution mixing water tank 28, and the reagent bottle is filled with an acidic and alkaline solution or a cleaning agent, which can provide acidic and alkaline environmental conditions during the detection process or clean different types of attached dust; a magnetic rotor 32 is arranged in the secondary solution mixing water tank 28, and an electromagnetic induction disk is arranged outside, which drives the magnetic rotor to rotate after power is turned on, so as to fully stir the solution; the water pump 29 and the electronic flow meter 27 are arranged in sequence on the water supply pipeline 26, and are connected to a high-pressure atomizing nozzle 31.

[0030] The environmental control unit includes a plurality of heating wires 33 and Peltier semiconductor coolers 34, a high-precision temperature sensor 35 and a PID controller; the heating wires 33 and Peltier semiconductor coolers 34 are evenly distributed on the inner wall of the filter material experimental chamber, and the two are connected in parallel to ensure that they can work independently. Through appropriate control circuits, one of them can be selected or used simultaneously to meet specific temperature requirements; the high-precision temperature sensor 35 is located inside the chamber, monitors the temperature in real time and feeds back to the PID controller 36; the PID controller 36 is located on the left platform, electrically connected to the temperature sensor 35, and adjusts the current passing through the Peltier semiconductor cooler 34 and the heating wire 33 according to the feedback from the sensor to achieve the required temperature setting.

[0031] The following describes a one-time use process of the present invention in conjunction with the accompanying drawings:

[0032] Open the double-door transparent test chamber 1, place the filter material on the filter material clamp 11 in the sealing cover 8, and make the sealing covers bite each other through the bidirectional slide rail to form the sealing condition of the test chamber. The environmental control unit is regulated by the control circuit of the electric heating wire 23 and the Peltier semiconductor refrigerator 34, and the temperature signal is fed back to the PID controller through real-time monitoring by the high-precision temperature sensor 35, so as to achieve accurate temperature setting in the cavity. Compressed air passes through the air pipeline 15 from the air collection bag 14 and preliminarily filters impurities through the high-efficiency air filter 16. Under the action of the electrical signal, the vibration screening structure 22 is turned on inside the graded feed bin 17 to grade the dust inside the bin. Under the action of the excitation feeding device 24, the dust inside the cavity is input into the gas pipeline 15 to mix with the filtered compressed air, and the air input pump 18 provides air compensation, and the air flow control valve 20 and the gas nozzle 21 are evenly sprayed on the filter material, and the dust concentration change before and after filtration is measured by the dust concentration sensor 12, so as to detect the filtering performance of the filter material. When the resistance sensor 13 on the internal surface of the cabin detects that there is too much dust on the surface of the filter material and the bag is stuck, the resistance sensor 13 will send a signal to the filter material cleaning system. The pure water in the primary clean water tank 25 is transported to the secondary solution mixing water tank 28 through the water pipeline under the action of the water pump 29. The reagent bottle at the top of the water tank will add an appropriate amount of cleaning agent (the reagent bottle can also be configured with acid and alkali solutions to adjust the environmental pH), and it will be fully mixed under the drive of the magnetic rotor 32 at the bottom of the water tank. The filter material is cleaned through the high-pressure atomizing nozzle 31 through the intelligent flow control meter 27, and the cleaned waste and sludge flow into the pull-out waste recovery device 10 set under the sealed cabin. During the experiment, the data processing and analysis unit saves and analyzes parameters such as the number of spraying times, water consumption, and ambient temperature in real time.

Claims

1. A wet filter material performance testing platform, characterized in that: It includes a visual semi-enclosed experimental unit, a data processing unit, and an environmental control unit. The three main structural units are all placed on a movable experimental platform; the visual semi-enclosed experimental unit includes two identical experimental systems for the experimental group and the control group, a double-door transparent experimental cabin, a retractable and closed filter material detection system, a dust-containing gas graded injection system, and a filter material cleaning and pH control system; a foldable experimental extension table is provided on one side of the lower end of the movable experimental platform, the lower end of the experimental platform is connected to a structural protection box, and wheels are provided on the protection box to facilitate the movement of the experimental platform.

2. A wet filter material performance testing platform according to claim 1, characterized in that: The retractable closed filter material detection system includes a sealing cover and a vertical plate fixed on the experimental platform, the fixed vertical plate is connected to a hydraulic support and a movable sealing cover, the movable sealing cover is connected to the fixed sealing cover by a bidirectional slide rail, and the "C"-shaped sealing covers on both sides are interlocked with each other to form a sealed experimental cabin, and an opening is provided on the sealing cabin for easy replacement of the test filter material; a pull-out waste recovery device is placed under the sealing cabin; a detachable filter material clamp, a dust concentration sensor and a surface resistance sensor are provided inside.

3. The dust-laden gas graded injection system according to claim 1 is characterized by: The system comprises a compressed air collecting bag, a gas transmission pipeline, a high-efficiency air filter, a visual capacity graded feed bin, a supplementary air input pump, a vacuum pump, a gas flow control valve and a nozzle; the compressed air collecting bag is located inside a structural protection box under the experimental platform, and is connected to the gas flow control valve and the nozzle through a gas transmission pipeline, the visual capacity graded feed bin is located on the gas transmission pipeline, the high-efficiency air filter is arranged between the compressed air collecting bag and the visual capacity graded feed bin, the supplementary air input pump is arranged between the feed bin and the flow control valve, the flow control valve is a solenoid valve, the solenoid valve is connected to a data processing unit, and the vacuum pump is connected to a sealed experimental cabin through a retractable hose.

4. The visual capacity grading feeding bin according to claim 3 is characterized by: The grading silo includes three parts: a vibrating screening structure, a visual storage silo, and an exciting unloading device; the vibrating screening structure is located at the top of the grading silo, and a layered grading screen is arranged inside it. The screen levels are selected as 100 mesh, 300 mesh, 500 mesh and 800 mesh. The screens of different levels correspond to the different silos at the lower end one by one. Under the vibration of the electric spring, the dust of the corresponding level is transported to the inside of the visual silo. A transparent observation window with scale values ​​is arranged on the periphery of the visual silo; the exciting unloading device is arranged at the lower end of the grading silo, and its outer shell is a conical shell, and its inner shell is an electric spring vibrator.

5. According to claim 1, a wet filter material performance testing platform is characterized by: The filter material cleaning and pH control system consists of a primary clean water tank, a water supply pipeline, an electronic flow meter, a secondary solution mixing water tank, a water pump, a replaceable reagent bottle, and a high-pressure atomizing nozzle; the primary clean water tank is placed inside a structural protection box at the lower end of the experimental platform and is connected to the secondary solution mixing water tank through a water supply pipeline and a water pump; the replaceable reagent bottle is placed at the upper end of the secondary mixing water tank; a magnetic rotor is arranged inside the secondary mixing water tank, and an electromagnetic induction disk is arranged outside the water tank, which drives the magnetic rotor to rotate when powered on to fully mix the solution; the water pump and the electronic flow meter are sequentially arranged on the water supply pipeline and connected to the high-pressure atomizing nozzle.

6. According to claim 1, a wet filter material performance testing platform is characterized in that: The environmental control unit is composed of a plurality of heating wires, a plurality of Peltier semiconductor coolers, a high-precision temperature sensor, and a PID controller; the heating wires and the Peltier semiconductor coolers are evenly distributed on the inner wall of the filter material experimental chamber, and the two are connected in parallel to ensure that they can work independently. Through appropriate control circuits, one of them can be selected or used simultaneously to meet specific temperature requirements; the high-precision temperature sensor is located inside the chamber, monitors the temperature in real time and feeds back to the PID controller; the PID controller is located on the left platform, electrically connected to the temperature sensor, and feedback-adjusts the current passing through the Peltier element and the heating wire according to the sensor to achieve the required temperature setting.

7. According to claim 1, a wet filter material performance testing platform is characterized by: The data processing and analysis unit is electrically connected to the visual semi-enclosed experimental unit and the environmental control unit respectively, and controls the experimental parameters such as the liquid flow rate and the number of gas injections of the experimental unit through the processing terminal. At the same time, the data processing unit can monitor the working conditions of the grading silo and record the environmental parameters such as the ambient temperature of the experimental cabin and its adjustment time in real time.

Images