Online dust fineness measuring device

Abstract

The invention relates to the technical field of online measurement of dust fineness, and provides an online dust fineness measuring device which comprises a fixed table and a protective shell, the protective shell is located at the top of the fixed table, and the top of the fixed table is provided with a blowing filter assembly, a manipulator assembly and a cleaning frame. The mechanical arm assembly is located between the blowing filtering assembly and the cleaning frame, an empty bowl clamping mechanism is arranged on one side of the cleaning frame, a feeding assembly is arranged on one side of the protective shell in a penetrating mode, a discharging pipe is fixedly installed at a discharging opening of the feeding assembly, a discharging valve is arranged on the discharging pipe, and the bottom of the discharging pipe is connected with the blowing filtering assembly. According to the online detection device, the feeding assembly, the support, the lifting assembly, the balance scale and the blowing filtering assembly are arranged, dust enters the online detection device, the purposes of automatic screening, automatic weighing, automatic calculation and automatic data transmission are achieved, errors in the testing process are effectively reduced, the long-time labor cost is avoided, and the detection efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of on-line measurement of dust fineness, and particularly relates to an on-line dust fineness measuring device. Background Art

[0002] Taking the detection of pulverized coal fineness in the pulverized coal entering the furnace of a thermal power plant as an example. Pulverized coal fineness refers to putting a certain amount of pulverized coal on a standard sieve with a sieve hole size of x for screening, and then weighing. The mass percentage of the remaining mass of the pulverized coal on the sieve in the total amount of pulverized coal is Rx = a / (a + b)×100%, where: a refers to the mass of the pulverized coal on the sieve during screening, and b refers to the mass of the pulverized coal passing through the sieve. Pulverized coal fineness is an important characteristic parameter of pulverized coal, which directly affects the economic operation, safety, and even environmental protection of the boiler. In China, power station boilers usually use two types of sieves with sieve hole sizes of 200μm and 90μm to evaluate the pulverized coal fineness, namely R200 and R90. During the design and operation of the unit, it is necessary to strictly control the optimal pulverized coal fineness value according to the characteristics of the coal type and operation experience to achieve the purpose of ensuring the safe, economic, and environmental protection operation of the unit.

[0003] The current situation is that the power plant staff manually take samples of pulverized coal from the pulverized coal pipeline regularly, with a sampling weight of about 50g, and perform screening in the laboratory to measure the fineness of the pulverized coal. Therefore, the current power plant uses an off-line method to detect the pulverized coal fineness. This method has a long time lag, large errors, and poor working conditions. In order to reduce the burden on the staff, improve the flexibility of the unit to adjust the fineness, enable the operators to timely master the change of the pulverized coal fineness, prevent the occurrence of adverse phenomena such as the decline of combustion performance and the erosion and corrosion of the water wall, and meet the needs of power production under informatization, it is imperative to provide a completely automated, on-line, and labor-free detection method.

[0004] However, among the currently implemented methods for on-line fineness measurement, there is still no method for on-line detection by directly using screening measurement. The detection method of pulverized coal fineness that meets the background of informatization and automation is currently in a blank stage. Summary of the Invention

[0005] The present invention provides an on-line dust fineness measuring device, which solves the problem that there is still no method for on-line detection by directly using screening measurement in the related art, and the detection method of pulverized coal fineness that meets the background of informatization and automation is currently in a blank stage.

[0006] The technical solution of the present invention is as follows: An on-line dust fineness measuring device includes a fixed platform and a protective shell, and the protective shell is located on the top of the fixed platform;

[0007] The top of the fixed table is respectively provided with a blowing and filtering component, a manipulator component and a cleaning rack, and the manipulator component is located between the blowing and filtering component and the cleaning rack. An empty bowl clamping mechanism is arranged on one side of the cleaning rack;

[0008] One side of the protective shell is penetrated by a feeding component. A blanking pipe is fixedly installed at the discharge port of the feeding component. A blanking valve is arranged on the blanking pipe, and the bottom of the blanking pipe is connected to the blowing and filtering component;

[0009] A cleaning component is arranged on the inner top wall of the cleaning rack;

[0010] A bracket is fixedly installed on the inner top wall of the fixed table. A lifting component is arranged on the bracket, and an empty bowl is arranged on the lifting component;

[0011] A balance scale is arranged on the top of the fixed table, and the balance scale is fixedly installed on the top of the lifting component.

[0012] Preferably, the blowing and filtering component includes a screening rack fixedly installed on the top of the fixed table. A multi-stage variable-diameter pipe is fixedly installed on the top of the screening rack. A filtering pipe is fixedly installed on the top of the multi-stage variable-diameter pipe. A filter screen is fixedly installed inside the filtering pipe;

[0013] A fine powder discharge pipe is fixedly installed on the top of the filtering pipe, and a switching valve I, a switching valve II, the fine powder discharge pipe and a discharge interface valve are respectively installed on the fine powder discharge pipe;

[0014] A coarse powder discharge pipe is fixedly installed on the top of the screening rack, and a coarse powder discharge valve is arranged on the coarse powder discharge pipe;

[0015] A gas heating pipe I, a gas heating pipe II and a multi-gas path solenoid valve are respectively fixedly installed on the inner bottom wall of the fixed table. The end of the gas heating pipe I is fixedly installed with a feeding blowing pipe. One end of the gas heating pipe II is fixedly installed with a main blowing pipe branch I and a main blowing pipe branch II respectively through a three-way joint. A blowing valve I is installed on the main blowing pipe branch I. A spiral air groove is installed at the other end of the main blowing pipe branch I. A blowing valve II is installed on the main blowing pipe branch II.

[0016] Preferably, the lifting component includes a fixed frame fixedly installed inside the bracket. A ball screw mechanism is installed on the fixed frame. A connecting plate is threadedly connected to the screw rod of the ball screw mechanism;

[0017] Two support frames are symmetrically penetrated through the top of the fixed frame, and the two support frames are respectively located on both sides of the balance scale. The bottoms of the two support frames are fixedly connected to the connecting plate, and the empty bowl is placed on the two support frames.

[0018] Preferably, the cleaning component includes a first cylinder fixedly installed on the inner top wall of the cleaning frame, and a connecting frame is fixedly installed on the bottom wall of the first cylinder;

[0019] A rotating rod is rotatably installed on the bottom wall of the connecting frame, a rectangular plate is fixedly installed at the bottom of the rotating rod, a brush is fixedly installed at a position near the end on the lower side of the rectangular plate, a first gear transmission mechanism is installed on the connecting frame, and a driven gear of the first gear transmission mechanism is fixedly installed on the outer side wall of the rotating rod.

[0020] Preferably, the manipulator component includes two linear guide rails symmetrically and fixedly installed on the top of the fixed table, a sliding frame is slidably connected to the two linear guide rails through sliders, and a driving mechanism is arranged at the bottom of the sliding frame;

[0021] A round rod penetrates through the sliding frame, and the round rod is rotatably connected to the sliding frame. An L-shaped plate is fixedly installed at the top of the round rod, a second cylinder is fixedly installed on one side of the L-shaped plate, and a holding frame is fixedly installed at the output end of the second cylinder;

[0022] A second gear transmission mechanism is installed at the bottom of the sliding frame, and a driven gear of the second gear transmission mechanism is fixedly installed at the bottom of the round rod.

[0023] Preferably, the driving mechanism includes a rotating motor fixedly installed at the bottom of the sliding frame, a spur gear is fixedly installed at the output end of the rotating motor, a rack is fixedly installed on the top of the fixed table, and the spur gear is meshed with the rack.

[0024] Preferably, a protective frame is fixedly installed on the top of the fixed table, the linear guide rails are located inside the protective frame, a rectangular groove is formed on the top of the fixed table, and the rectangular groove on the fixed table is parallel to the rectangular groove on the protective frame up and down.

[0025] Preferably, the feeding component includes a fixed shell penetrating through one side of the protective shell, and a feeding pipe is fixedly installed on the fixed shell;

[0026] A screw rod penetrates through one side of the inner wall of the fixed shell, and the screw rod is rotatably connected to the fixed shell. A synchronous belt transmission mechanism is installed on the fixed shell, and a driven synchronous belt of the synchronous belt transmission mechanism is fixedly installed at one end of the screw rod;

[0027] A feeding hopper is fixedly installed through the fixed shell, a quantitative structure is installed on the feeding hopper, and a feeding pipe is fixedly installed through the top of the feeding hopper;

[0028] A connecting block is threadedly connected to the outer side wall of the screw, and the top of the connecting block is fixedly installed on the blanking mechanism.

[0029] Preferably, the blanking mechanism includes a fixed block fixedly installed on the top of the connecting block. One end of the fixed block is fixedly installed with a blanking hopper. A cover plate is pin-connected to the fixed block, and the cover plate is located below the blanking hopper.

[0030] Preferably, baffles are fixedly installed on both sides of the inner wall of the fixed shell, and the baffles are located on both sides of the fixed block. The cover plate is located above the baffles.

[0031] The working principle and beneficial effects of the present invention are as follows:

[0032] 1. By setting the feeding assembly, the bracket, the lifting assembly, the weighing scale and the blowing and filtering assembly, it realizes the purpose of automatic screening, automatic weighing, automatic calculation and automatic data transmission when dust enters this on-line detection device, effectively reducing errors in the testing process, avoiding long-term labor costs, and greatly improving the detection efficiency.

[0033] 2. By setting the manipulator assembly and the cleaning assembly, the device can automatically clean the dust bowl and automatically prepare for the next measurement, so that the device is completely automated, on-line, and does not require manual methods for detection and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following further describes the present invention in detail with reference to the drawings and specific embodiments.

[0035] Figure 1 is the overall structural schematic diagram proposed by the present invention;

[0036] Figure 2 is the structural schematic diagram of the weighing scale proposed by the present invention;

[0037] Figure 3 is the structural schematic diagram of the blowing and filtering assembly proposed by the present invention;

[0038] Figure 4 is the structural schematic diagram of the protective frame proposed by the present invention;

[0039] Figure 5 is the structural schematic diagram of the manipulator assembly proposed by the present invention;

[0040] Figure 6 is the structural schematic diagram of the lifting assembly proposed by the present invention;

[0041] Figure 7 is the structural schematic diagram of the cleaning frame proposed by the present invention;

[0042] Figure 8Schematic cross-sectional structure diagram of the cleaning component proposed by the present invention;

[0043] Figure 9 Schematic structure diagram of the feeding component proposed by the present invention;

[0044] Figure 10 Schematic structure diagram of the pouring mechanism proposed by the present invention;

[0045] Figure 11 Schematic structure diagram of the spiral air duct proposed by the present invention.

[0046] In the figure: 1, fixed table; 2, protective shell;

[0047] 3, feeding component; 31, fixed shell; 32, screw; 33, synchronous belt drive mechanism; 34, feed hopper; 35, quantitative structure; 36, feed pipe; 37, pouring mechanism; 3701, fixed block; 3702, pouring hopper; 3703, cover plate;

[0048] 4, manipulator component; 41, linear guide rail; 42, sliding frame; 43, second gear drive mechanism; 44, L-shaped plate; 45, second cylinder; 46, holding rack; 47, drive mechanism;

[0049] 5, cleaning component; 51, first cylinder; 52, connecting frame; 53, rotating rod; 54, brush; 55, first gear drive mechanism;

[0050] 6, support;

[0051] 7, lifting component; 71, fixed frame; 72, ball screw mechanism; 73, connecting plate; 74, support frame;

[0052] 8, balance scale;

[0053] 9, blowing and filtering component; 91, screening rack; 92, multi-stage variable diameter pipe; 93, filter pipe; 94, fine powder discharge pipe; 95, switching valve 1; 96, switching valve 2; 97, vacuum suction valve; 98, discharge interface valve; 99, coarse powder discharge pipe; 910, coarse powder discharge valve; 911, gas heating pipe 1; 912, feed blowing pipe; 913, gas heating pipe 2; 914, main blowing pipe branch 1; 915, blowing valve 1; 916, spiral air duct; 917, main blowing pipe branch 2; 918, blowing valve 2;

[0054] 10, protective frame; 11, cleaning frame; 12, baffle; 13, blanking valve; 14, multi-airway solenoid valve. Detailed implementation manners

[0055] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0056] Please refer to Figure 1 - Figure 11 , an on-line dust fineness measuring device, comprising a fixed table 1 and a protective shell 2, and the protective shell 2 is located on the top of the fixed table 1;

[0057] A blowing and filtering assembly 9, a manipulator assembly 4 and a cleaning rack 11 are respectively arranged on the top of the fixed table 1, and the manipulator assembly 4 is located between the blowing and filtering assembly 9 and the cleaning rack 11, and an empty bowl clamping mechanism is arranged on one side of the cleaning rack 11;

[0058] A feeding assembly 3 penetrates through one side of the protective shell 2, a feeding pipe is fixedly installed at the discharge port of the feeding assembly 3, a feeding valve 13 is arranged on the feeding pipe, and the bottom of the feeding pipe is connected to the blowing and filtering assembly 9;

[0059] A cleaning component 5 is arranged on the inner top wall of the cleaning rack 11;

[0060] A bracket 6 is fixedly installed on the inner top wall of the fixed table 1, a lifting assembly 7 is arranged on the bracket 6, and an empty bowl is arranged on the lifting assembly 7;

[0061] A balance scale 8 is arranged on the top of the fixed table 1, and the balance scale 8 is fixedly installed on the top of the lifting assembly 7.

[0062] An online dust fineness measuring device provided by the present invention, when in use, first drives the empty bowl to descend through the lifting assembly 7, so that the balance scale 8 weighs the empty bowl as M. Then the outer rear lifting assembly 7 drives the balance scale 8 to rise and reset. Then, open the valve, gas heating mechanism and gas source on the blowing and filtering assembly 9, so as to be able to preheat the empty bowl. When the preheating temperature reaches 105 °C, the valve, gas heating mechanism and gas source on the blowing and filtering assembly 9 all stop. Then, open the feeding and discharging through the feeding assembly 3. Then the lifting assembly 7 drives the bowl thereon to descend, and the initial weighing and metering weight M1 is carried out through the balance scale 8. After weighing, the lifting assembly 7 drives the bowl to rise and reset. Then the gas heating mechanism and gas source are opened, so that the blowing and filtering assembly 9 can both blow air into the bowl and suck up the blown dust for filtering. After sucking, close all the valves, gas heating mechanism and gas source on the blowing and filtering assembly 9. Then the lifting assembly 7 drives the bowl to conduct secondary weighing M2, and calculate the ratio by (1 - (M1 - M2) / (M1 - M)) × 100%. After completion, clear the residual materials through the blowing and filtering assembly 9, and close after cleaning. Then, move the empty bowl on the lifting assembly 7 to the cleaning assembly 5 inside the cleaning rack 11 through the manipulator assembly 4 for cleaning. While cleaning, the manipulator assembly 4 conveys another empty bowl on the empty bowl clamping mechanism to the lifting assembly 7. Then repeat the above steps, so that the device realizes the purpose of automatically screening, automatically weighing, automatically calculating, automatically cleaning and preparing for the next measurement, and automatically transmitting data after the dust enters this online detection device.

[0063] Further, the blowing and filtering assembly 9 includes a screening rack 91 fixedly installed on the top of the fixed table 1. A multi-stage variable diameter pipe 92 is fixedly installed on the top of the screening rack 91. A filter pipe 93 is fixedly installed on the top of the multi-stage variable diameter pipe 92. A filter net is fixedly installed inside the filter pipe 93;

[0064] A fine powder discharge pipe 94 is fixedly installed on the top of the filter pipe 93, and a switching valve one 95, a switching valve two 96, the fine powder discharge pipe 94 and a discharge interface valve 98 are respectively installed on the fine powder discharge pipe 94;

[0065] A coarse powder discharge pipe 99 is fixedly installed on the top of the screening rack 91, and a coarse powder discharge valve 910 is arranged on the coarse powder discharge pipe 99;

[0066] On the inner bottom wall of the fixed table 1, a gas heating pipe 911, a gas heating pipe 913 and a multi-gas path solenoid valve 14 are fixedly installed respectively. At the end of the gas heating pipe 911, a feed blowing pipe 912 is fixedly installed. One end of the gas heating pipe 913 is fixedly installed with a main blowing pipe branch 914 and a main blowing pipe branch 917 respectively through a tee joint. A blowing valve 915 is installed on the main blowing pipe branch 914. A spiral air duct 916 is installed at the other end of the main blowing pipe branch 914. A blowing valve 918 is installed on the main blowing pipe branch 917.

[0067] Specifically, during the preparatory action, the multi-gas path solenoid valve 14 is fully opened and never closed. One side of the discharge interface valve 98 is externally connected to a stable gas source, and the other side is connected to the gas heating pipe 911 and the gas heating pipe 913 through a gas pipe. After the system starts running, the airway switch corresponding to the discharge interface valve 98 is opened. After the system ends running, it is closed.

[0068] During the preheating of the cavity, the gas heating pipe 913 is powered on, and the main blowing pipe branch 914, the switching valve 95, the switching valve 96 and the coarse powder discharge valve 910 are opened to perform hot air heating on the empty bowl and the main components on the air path. When the temperature of the empty bowl reaches 105 degrees, the above-mentioned valves and the gas heating pipe 913 are closed in sequence.

[0069] After weighing and performing the first screening, the gas heating pipe 913 is powered on, and the switching valve 95, the switching valve 96, the blowing valve 915 and the vacuum suction valve 97 are opened to suck the powder with a particle size smaller than the aperture through the filter screen for 20 seconds.

[0070] When performing pulse reverse blowing and dust cleaning on the filter screen, the blowing valve 915, the vacuum suction valve 97 and the switching valve 96 in the previous step are closed in sequence. On the basis of keeping the switching valve 95 still open, the blowing valve 918 is opened. After 1 second, the blowing valve 918 is closed.

[0071] During the second screening, the switching valve 96, the vacuum suction valve 97 and the blowing valve 915 are opened in sequence to suck the powder with a particle size smaller than the aperture through the filter screen for 20 seconds.

[0072] After that, the pulse reverse blowing and dust cleaning of the filter screen and the second screening steps are repeated additionally for two rounds in total to complete the screening of the small particle size powder.

[0073] When cleaning the remaining sample, the main blowing pipe branch 917 is powered on, and the coarse powder discharge valve 910, the switching valve 96 and the blowing valve 915 are opened to suck the remaining large particle size powder sample in the bowl through the coarse powder discharge pipe 99. After 60 seconds, the blowing valve 915, the vacuum suction valve 97, the coarse powder discharge valve 910 and the main blowing pipe branch 917 are closed in sequence.

[0074] When cleaning the remaining materials, open the blanking valve 13 on the feeding assembly 3 to pour the remaining materials in the feeding assembly 3 into an empty bowl, and then close the blanking valve 13 on the feeding assembly 3. Energize the gas heating pipe two 913, open the coarse powder discharge valve 910, the vacuum suction valve 97 and the blowing valve one 915, and suck all the powder in the bowl through the coarse powder discharge pipe 99 for 60 seconds;

[0075] When cleaning the feeding assembly 3, after the previous step's time delay is completed, additionally open the gas heating pipe two 913, the air path controlling the on-off of the feeding blow pipe 912 in the discharge interface valve 98, and the blanking valve 13 to clean the adhered powder in the feeding assembly 3 for 60 seconds.

[0076] When cleaning the filter screen, after the previous step's time delay is completed, sequentially close the blanking valve 13, the air path controlling the on-off of 18 in the discharge interface valve 98, the gas heating pipe one 911, the blowing valve one 915 and additionally open the blowing valve two 918 and the switching valve one 95. After 20 seconds, sequentially close the blowing valve two 918, the vacuum suction valve 97 and all other valves, and close the main blow pipe branch two 917.

[0077] Furthermore, the lifting assembly 7 includes a fixed frame 71 fixedly installed on the inner side of the bracket 6. A ball screw mechanism 72 is installed on the fixed frame 71, and a connecting plate 73 is threadedly connected to the screw rod of the ball screw mechanism 72;

[0078] Two support frames 74 are symmetrically penetrated through the top of the fixed frame 71, and the two support frames 74 are respectively located on both sides of the balance scale 8. The bottoms of the two support frames 74 are fixedly connected to the connecting plate 73, and the empty bowl is placed on the two support frames 74.

[0079] Specifically, the motor on the ball screw mechanism 72 drives the screw rod on the ball screw mechanism 72 to rotate, so that the screw rod can drive the connecting plate 73 threaded thereon to lift and lower, and further enable the empty bowl on the support frame 74 to contact the balance scale 8 and make the balance scale 8 perform weighing.

[0080] Furthermore, the cleaning assembly 5 includes a first cylinder 51 fixedly installed on the inner top wall of the cleaning frame 11. A connecting frame 52 is fixedly installed on the bottom wall of the first cylinder 51;

[0081] A rotating rod 53 is rotatably installed on the bottom wall of the connecting frame 52. A rectangular plate is fixedly installed at the bottom of the rotating rod 53. A brush 54 is fixedly installed at a position near the end of the lower side of the rectangular plate. A first gear transmission mechanism 55 is installed on the connecting frame 52, and the driven gear of the first gear transmission mechanism 55 is fixedly installed on the outer side wall of the rotating rod 53.

[0082] Specifically, the first cylinder 51 drives the connecting frame 52 to descend, so that the brush 54 extends into the bowl. Then, the motor of the first gear transmission mechanism 55 drives the driving gear on its output end. Then, the driving gear drives the connecting frame 52 through the driven gear meshed with it, so that the connecting frame 52 can drive the rotating rod 53 and the brush 54, and the brush 54 can clean the empty bowl.

[0083] In addition, it should be noted that while the brush 54 is cleaning the empty bowl, the gas nozzle aligned with the empty bowl installed on the side wall below the cleaning frame 11 will continuously spray high-pressure gas to blow up the residual powder. At this time, the negative pressure source of the blowing and filtering assembly 9 is connected to the lower part of the cleaning frame 11 to discharge the blown-up residual powder out of the system.

[0084] Furthermore, the manipulator assembly 4 includes two linear guides 41 symmetrically and fixedly installed on the top of the fixed table 1. A sliding frame 42 is slidably connected to the two linear guides 41 through sliders, and a driving mechanism 47 is arranged at the bottom of the sliding frame 42;

[0085] A round rod is penetrated through the sliding frame 42, and the round rod is rotatably connected to the sliding frame 42. An L-shaped plate 44 is fixedly installed at the top of the round rod, and a second cylinder 45 is fixedly installed on one side of the L-shaped plate 44. The output end of the second cylinder 45 is fixedly installed with a holding frame 46;

[0086] A second gear transmission mechanism 43 is installed at the bottom of the sliding frame 42, and the driven gear of the second gear transmission mechanism 43 is fixedly installed at the bottom of the round rod.

[0087] Specifically, the driving mechanism 47 can drive the sliding frame 42 on the linear guide 41 to slide, and then drive the round rod and the L-shaped plate 44 through the second gear transmission mechanism 43, so as to adjust the angle of the empty bowl on the holding frame 46. Then, the second cylinder 45 drives the holding frame 46 to lift and lower, so as to adjust the height of the empty bowl, so that the holding frame 46 can place the empty bowl on the cleaning assembly 5, and can also take the empty bowl from the empty bowl clamping mechanism and place it on the lifting assembly 7.

[0088] Furthermore, the driving mechanism 47 includes a rotary motor fixedly installed at the bottom of the sliding frame 42. The output end of the rotary motor is fixedly installed with a spur gear. A rack is fixedly installed on the top of the fixed table 1, and the spur gear is meshed with the rack.

[0089] Specifically, the rotary motor drives the spur gear to rotate, and then the rotating spur gear can generate a push-pull force through the rack meshed with it, so as to push the sliding frame 42 on the linear guide 41 to move.

[0090] Furthermore, a protective frame 10 is fixedly installed on the top of the fixed table 1, and the linear guide rail 41 is located inside the protective frame 10. A rectangular groove is formed on the top of the fixed table 1, and the rectangular groove on the fixed table 1 is parallel to the rectangular groove on the protective frame 10 up and down.

[0091] Specifically, through the protective frame 10, parts such as the linear guide rail 41 can be protected. At the same time, through the rectangular groove formed on the fixed table 1, the bottom of the second gear transmission mechanism 43 can be inserted into the fixed table 1, preventing the second gear transmission mechanism 43 from blocking the sliding frame 42 due to its own height and making the sliding frame 42 unable to slide on the linear guide rail 41.

[0092] Furthermore, the feeding assembly 3 includes a fixed shell 31 penetrating through one side of the protective shell 2, and the blanking pipe is fixedly installed on the fixed shell 31;

[0093] One side of the inner wall of the fixed shell 31 is penetrated by a screw rod 32, and the screw rod 32 is rotatably connected to the fixed shell 31. A synchronous belt transmission mechanism 33 is installed on the fixed shell 31, and the driven synchronous belt of the synchronous belt transmission mechanism 33 is fixedly installed at one end of the screw rod 32;

[0094] A feed hopper 34 is fixedly installed through the fixed shell 31. A quantitative structure 35 is fixedly installed on the feed hopper 34, and a feed pipe 36 is fixedly installed through the top of the feed hopper 34;

[0095] A connecting block is threadedly connected to the outer side wall of the screw rod 32, and the top of the connecting block is fixedly installed on the blanking mechanism 37.

[0096] Specifically, through the feed pipe 36, dust can enter the hopper on the quantitative structure 35. Then, when the weight sensor on the hopper senses about 50 g, the rotary cylinder on the quantitative structure 35 drives the L-shaped frame on its output end, so that the hopper at one end of the L-shaped frame is turned over, and the material enters the blanking mechanism 37. Then, the synchronous belt transmission mechanism 33 drives the screw rod 32 to rotate, so that the screw rod 32 can drive the blanking mechanism 37 to move towards the discharge port on the fixed shell 31 through the connecting block threadedly connected thereto, so that the dust can enter the empty bowl.

[0097] Furthermore, the blanking mechanism 37 includes a fixed block 3701 fixedly installed on the top of the connecting block. One end of the fixed block 3701 is fixedly installed with a blanking hopper 3702. A cover plate 3703 is pin-connected to the fixed block 3701, and the cover plate 3703 is located below the blanking hopper 3702.

[0098] Specifically, through the cover plate 3703 pin-connected to the fixed block 3701, the lower part of the blanking hopper 3702 can be opened, so that the dust in the blanking hopper 3702 can be sent into the empty bowl.

[0099] Furthermore, baffles 12 are fixedly installed on both sides of the inner wall of the fixed housing 31, and the baffles 12 are located on both sides of the fixed block 3701, and the cover plate 3703 is located above the baffles 12.

[0100] Specifically, when the discharging mechanism 37 is located directly below the feed hopper 34 through the baffle 12, the cover plate 3703 covers the bottom wall of the discharging hopper 3702. Then, when the discharging mechanism 37 moves above the discharge port of the fixed housing 31, since there is no obstruction from the baffle 12, the cover plate 3703 will automatically open under the action of gravity, so that the dust in the discharging hopper 3702 can be sent into the empty bowl.

[0101] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An online dust fineness measuring device, comprising a fixing platform (1) and a protective shell (2), characterized in that: The protective shell (2) is located on the top of the fixing platform (1); The top of the fixed platform (1) is respectively provided with an air blowing filter assembly (9), a manipulator assembly (4) and a cleaning rack (11), and the manipulator assembly (4) is located between the air blowing filter assembly (9) and the cleaning rack (11), and an empty bowl clamping mechanism is provided on one side of the cleaning rack (11); A feeding assembly (3) is provided through one side of the protective shell (2); a feeding pipe is fixedly installed at the discharge port of the feeding assembly (3); a feeding valve (13) is provided on the feeding pipe, and the bottom of the feeding pipe is connected to the blowing filter assembly (9); The inner top wall of the cleaning frame (11) is provided with a cleaning component (5); A bracket (6) is fixedly mounted on the inner top wall of the fixed platform (1), a lifting assembly (7) is arranged on the bracket (6), and an empty bowl is arranged on the lifting assembly (7); A balance scale (8) is arranged on the top of the fixed platform (1), and the balance scale (8) is fixedly installed on the top of the lifting component (7).

2. The online dust fineness measuring device according to claim 1 is characterized in that: The air blowing filter assembly (9) comprises a screening frame (91) fixedly mounted on the top of the fixed platform (1), a multi-stage reducer (92) fixedly mounted on the top of the screening frame (91), a filter tube (93) fixedly mounted on the top of the multi-stage reducer (92), and a filter screen fixedly mounted inside the filter tube (93); A fine powder discharge pipe (94) is fixedly mounted on the top of the filter pipe (93), and a switching valve 1 (95), a switching valve 2 (96), the fine powder discharge pipe (94) and a discharge interface valve (98) are respectively mounted on the fine powder discharge pipe (94); A coarse powder discharge pipe (99) is fixedly mounted on the top of the screening frame (91), and a coarse powder discharge valve (910) is provided on the coarse powder discharge pipe (99); The inner bottom wall of the fixed platform (1) is respectively fixedly mounted with a gas heating pipe 1 (911), a gas heating pipe 2 (913) and a multi-gas-path electromagnetic valve (14); a feed air blowing pipe (912) is fixedly mounted at the end of the gas heating pipe 1 (911); a main air blowing pipe branch 1 (914) and a main air blowing pipe branch 2 (917) are respectively fixedly mounted at one end of the gas heating pipe 2 (913) via a three-way joint; an air blowing valve 1 (915) is mounted on the main air blowing pipe branch 1 (914); a spiral wind groove (916) is mounted on the other end of the main air blowing pipe branch 1 (914); and an air blowing valve 2 (918) is mounted on the main air blowing pipe branch 2 (917).

3. The online dust fineness measuring device according to claim 1 is characterized in that: The lifting assembly (7) comprises a fixing frame (71) fixedly mounted on the inner side of the bracket (6); a ball screw mechanism (72) is mounted on the fixing frame (71); a connecting plate (73) is threadedly connected to the screw rod of the ball screw mechanism (72); Two support frames (74) are symmetrically arranged on the top of the fixed frame (71), and the two support frames (74) are respectively located on both sides of the balance scale (8). The bottoms of the two support frames (74) are fixedly connected to the connecting plate (73), and the empty bowls are placed on the two support frames (74).

4. The online dust fineness measuring device according to claim 1 is characterized in that: The cleaning assembly (5) comprises a first cylinder (51) fixedly mounted on the top wall of the cleaning frame (11), and a connecting frame (52) is fixedly mounted on the bottom wall of the first cylinder (51); A rotating rod (53) is rotatably mounted on the bottom wall of the connecting frame (52), a rectangular plate is fixedly mounted on the bottom of the rotating rod (53), a brush (54) is fixedly mounted on the lower side of the rectangular plate near the end, a first gear transmission mechanism (55) is mounted on the connecting frame (52), and a driven gear of the first gear transmission mechanism (55) is fixedly mounted on the outer side wall of the rotating rod (53).

5. The online dust fineness measuring device according to claim 1 is characterized in that: The manipulator assembly (4) comprises two linear guide rails (41) symmetrically fixedly mounted on the top of the fixed platform (1), a sliding frame (42) being slidably connected to the two linear guide rails (41) via a slider, and a driving mechanism (47) is provided at the bottom of the sliding frame (42); A round rod is provided through the sliding frame (42), and the round rod is rotatably connected to the sliding frame (42); an L-shaped plate (44) is fixedly installed on the top of the round rod, a second cylinder (45) is fixedly installed on one side of the L-shaped plate (44), and a containing frame (46) is fixedly installed on the output end of the second cylinder (45); A second gear transmission mechanism (43) is installed at the bottom of the sliding frame (42), and a driven gear of the second gear transmission mechanism (43) is fixedly installed at the bottom of the round rod.

6. The on-line dust fineness measuring device according to claim 5, characterized in that: The driving mechanism (47) comprises a rotating motor fixedly mounted on the bottom of the sliding frame (42), a spur gear fixedly mounted on the output end of the rotating motor, a rack fixedly mounted on the top of the fixed platform (1), and the spur gear is meshingly connected with the rack.

7. The online dust fineness measuring device according to claim 5, characterized in that: A protective frame (10) is fixedly mounted on the top of the fixed platform (1), and the linear guide rail (41) is located inside the protective frame (10). A rectangular groove is provided on the top of the fixed platform (1), and the rectangular groove on the fixed platform (1) is vertically parallel to the rectangular groove on the protective frame (10).

8. The online dust fineness measuring device according to claim 1 is characterized in that: The feeding assembly (3) comprises a fixed shell (31) which is arranged through one side of the protective shell (2), and the feeding pipe is fixedly mounted on the fixed shell (31); A screw rod (32) is provided through one side of the inner wall of the fixed shell (31), and the screw rod (32) is rotatably connected to the fixed shell (31). A synchronous belt transmission mechanism (33) is installed on the fixed shell (31), and a driven synchronous belt of the synchronous belt transmission mechanism (33) is fixedly installed on one end of the screw rod (32); A feed hopper (34) is fixedly installed through the fixed shell (31), a quantitative structure (35) is fixedly installed on the feed hopper (34), and a feed pipe (36) is fixedly installed through the top of the feed hopper (34); A connecting block is threadedly connected to the outer wall of the screw rod (32), and the top of the connecting block is fixedly mounted on the pouring mechanism (37).

9. The online dust fineness measuring device according to claim 8, characterized in that: The material pouring mechanism (37) comprises a fixed block (3701) fixedly mounted on the top of the connecting block, a material pouring hopper (3702) being fixedly mounted on one end of the fixed block (3701), a cover plate (3703) being connected to a pin on the fixed block (3701), and the cover plate (3703) being located below the material pouring hopper (3702).

10. An online dust fineness measuring device according to claim 9, characterized in that: Baffles (12) are fixedly mounted on both sides of the inner wall of the fixed shell (31), and the baffles (12) are located on both sides of the fixed block (3701), and the cover plate (3703) is located above the baffles (12).

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