CN209280607U - A kind of online xrf analysis device of automatic sampling type cement slurry - Google Patents

Abstract

The utility model discloses a kind of online xrf analysis devices of automatic sampling type cement slurry, the down feather filling mechanism including the sampling mechanism for microsampling, for the material receiving mechanism of quantitative sampling, for the X-fluorescence measuring mechanism of elemental analysis and for cleaning ash discharge.The utility model utilizes the at the uniform velocity microsampling from raw material skewed slot of Mini-type spiral reamer；Sampling amount is controlled using the material receiving mechanism with two-stage level sensor and two-stage flashboard, is realized quantitative to X-fluorescence measuring mechanism to sample；Clout and sample are flow back to again in raw material skewed slot using air conveyor；The continuous circular flow of package unit ensure that the sample doses stabilization and sample timeliness and representativeness for online X-fluorescence measuring mechanism are strong.

Description

An online X-ray fluorescence analysis device for automatically taking samples of cement raw meal

technical field

The utility model relates to the field of on-line detection of industrial material components, in particular to an on-line X fluorescence analysis device for cement raw material.

Background technique

Cement raw meal is an important source of cement production. In the cement production process, cement raw meal determines the product quality of cement clinker to a large extent and affects the economic benefits of enterprises. The production of cement raw meal is composed of four process links: mine mining, raw material pre-homogenization storage yard, raw meal grinding, and raw meal homogenization warehouse. Limestone, clay and other raw materials are ground into loose fine powder by raw meal mill Shaped raw meal, the air conveying chute driven by the fan airflow makes the raw meal in a suspended state along with the airflow and is transported to the raw meal homogenization warehouse along the pipeline, and then enters the kiln for calcination to form cement clinker. In order to produce high-quality clinker and ensure cement quality , is essential to the efficient control of raw meal quality and stability.

X-ray fluorescence analysis (X-ray fluorescence analysis, XRF), referred to as X-ray fluorescence analysis, is to measure the characteristic X-rays emitted by the sample elements after they are excited, and to quantify and characterize the elements in the sample according to the energy and intensity of the characteristic X-rays. analyze. X-ray fluorescence analysis equipment is low in cost, does not need to use radioactive sources, can meet the best radiation safety requirements, and is widely and maturely used in the cement industry, especially cement companies generally use sampler + X-ray fluorescence in the quality control of raw materials after grinding Analyzer + quality control system for artificial ingredients. With the development of intelligent industry, on-line detection technology can improve the quality of industrial process and monitor big data, which has attracted more and more attention from the cement industry. Therefore, the application of X-ray fluorescence analysis technology to the on-line detection of cement raw materials will have a good application prospect.

However, X-ray fluorescence analyzers in the cement industry rely on manual participation, which makes it difficult for traditional X-ray fluorescence analysis equipment to be directly used for on-site real-time online analysis. It takes at least 30 minutes for X-ray fluorescence analysis to analyze the results, which is time-consuming and labor-intensive, and the detection results lag behind. In addition, since the sampling process of the raw meal sampling port is a cumulative collection of samples over a period of time, rather than real-time sampling, the cumulative consumption of sampling When the control period is generally about 1 hour, such a typical long-time lag feedback control system has poor control effect, followed by poor sample representativeness, and it is difficult to guarantee the representativeness of the sampling and reduction process. Therefore, if X-ray fluorescence analysis The application of the system to the on-line analysis of cement raw meal first needs to solve the problem of automatic real-time sampling.

Secondly, X-ray fluorescence analysis has strict requirements on the sample volume or sample thickness when analyzing powder samples. It requires an appropriate amount of sample and a stable material volume. The thickness of the sample formed by the waveguide of the material volume is different, and the degree of matrix effect caused by it is different, which leads to X-ray fluorescence. Intensity fluctuations affect the stability and accuracy of online X-ray fluorescence analysis results. Usually, samples are taken manually from the sampling port of the cement raw material chute and brought back to the laboratory. A fixed amount needs to be weighed and put into the measuring cup, and then the Manually put the cup into the X-ray fluorescence analysis equipment for testing, and then remove the cup manually after the test is completed. Therefore, if the X-ray fluorescence analysis system is applied to the on-line analysis of cement raw meal, it is necessary to solve the problems of quantitative sample feeding and automatic sample cleaning.

Utility model content

The utility model provides an on-line X-fluorescence analysis device for automatically sampling cement raw materials, which can realize automatic sampling, quantitative sampling, X-fluorescence measurement and sample clearing of cement raw materials on-line, and solve the problem of artificial X-ray fluorescence analysis in traditional cement laboratories. Dependence and time lag issues.

The utility model adopts the following technical solutions:

An online X-ray fluorescence analysis device for automatically sampling cement raw meal, including a sampling mechanism, a material receiving mechanism, an X-ray fluorescence measuring mechanism and a material cleaning mechanism; Collect raw meal samples at a medium and uniform speed; the material receiving mechanism is used for judging the amount of samples, quantitative sampling and sending samples to the X-ray fluorescence measurement mechanism; the X-ray fluorescence measurement mechanism is used for elemental composition analysis of cement raw meal; The material cleaning mechanism described above is used to discharge the remaining material in the material receiving mechanism and the measured sample in the material cup back to the air conveying chute; wherein the sampling mechanism intermittently and continuously samples and operates synchronously with the X fluorescence measuring mechanism, The material receiving mechanism is used for quantitative sampling and sending samples to the X-ray fluorescence measurement mechanism to ensure that the sample material volume used in the X-ray fluorescence measurement mechanism is always stable. The material cleaning mechanism rearranges the excess materials in the material connection mechanism and the measured samples in the cup. Returning to the air conveying chute ensures that there is no residual material in the device, and realizes the on-line analysis of cement raw materials; the sampling mechanism includes a geared motor (1) and a spiral reamer sampler (2) driven by it, installed in the raw material The side of the air conveying chute (25) of the upstream section after the material mill is continuously sampled with a small amount of multiple circulation modes.

In the online X-ray fluorescence analysis device for automatically sampling cement raw meal, the reduction motor (1) can work in forward and reverse directions, sampling in forward rotation, and nesting in reverse rotation, driving the spiral reamer sampler (2) to take out air at a constant speed in forward rotation Convey the raw material sample in the chute (25), the forward rotation time is fixed each time, the number of forward rotations in a sampling cycle is set to an upper limit, the reverse rotation of the geared motor (1) drives the spiral reamer sampler (2) to discharge the reamer Material in the thread.

In the online X fluorescence analysis device for automatically sampling cement raw meal, the output shaft speed of the geared motor (1) is not more than 25r/min; the spiral reamer sampler (2) is composed of a screw rod and an outer casing, The rear end is fixed with the flange of the geared motor (1) and a discharge port is opened near the flange. The discharge port is vertically downward, so that the raw material can fall vertically along the discharge pipe (4).

In the online X-ray fluorescence analysis device for automatically taking samples of cement raw meal, the length of the screw that penetrates horizontally from the middle and lower part of the side to the inside of the air conveying chute (25) is not more than 300mm, and the thread depth of the screw is not less than 5mm; the gap between the outer sleeve and the screw is No more than 2mm, and the front end of the outer casing has a feed groove with a length of no less than 100mm and a width of no less than 15mm.

In the online X-ray fluorescence analysis device for automatically taking samples of cement raw meal, the material receiving mechanism includes a material receiving electric ball valve (3), a blanking pipe (4), an upper glass tube (5), and an upper vent valve (6) , lower glass tube (7), upper telescopic gate (8), upper material level sensor (9), lower telescopic gate (10), lower material level sensor (11), lower ventilation valve (13), material cup ( 14) and the measurement window (15); the material receiving electric ball valve (3) is normally closed, and is installed between the spiral reamer sampler (2) and the blanking pipeline (4); the described blanking pipeline (4) The middle part is sealed and connected with the cleaning mechanism, and the bottom of the blanking pipe (4) is sealed and connected with the upper glass tube (5); the upper glass tube (5), the upper telescopic gate (8), the lower glass tube (7), and the lower telescopic gate The plate (10), the material cup (14) and the measuring window (15) are sealed and connected sequentially from top to bottom.

In the online X-ray fluorescence analysis device for automatically taking samples of cement raw meal, the upper telescopic gate (8) and the lower telescopic gate (10) have the same structure, including a stainless steel sheet with a round hole driven by a telescopic cylinder and a sealed casing , wherein the upper telescopic flashboard (8) is in a normally open state, and the lower telescopic flashboard (10) is in a normally closed state; the lower telescopic flashboard (10) includes an upper sealing cover (26), a lower sealing cover (27), O-ring (28), stainless steel sheet (29), connection structure (30), telescopic cylinder (31) and telescopic gate support (32); Wherein upper sealing cover plate (26) and lower sealing cover plate (27) all There is a mounting groove with an O-ring and a through hole is opened in the center, and a sinking groove is reserved around the through hole for connecting with the transition tube seat at the bottom of the lower glass tube (7); the stainless steel sheet (29) is 304 stainless steel with a mirror-polished surface The sheet has a blanking hole (33), the stainless steel sheet (29) is fixed with the telescopic cylinder (31) through the connection structure (30), and the stainless steel sheet with the blanking hole is driven by the movement of the telescopic cylinder (31) within the stroke. Sheet (29) moves back and forth to control the blanking switch, telescopic cylinder (31) is a miniature stainless steel telescopic cylinder, connects compressed air, and is fixed on the telescopic flashboard support (32).

In the online X-ray fluorescence analysis device for automatically taking samples of cement raw meal, the upper material level sensor (9) and the lower material level sensor (11) are both diffuse reflection type or through-beam photoelectric sensor switches; the upper material level sensor (9) is installed at the bottom of the upper glass tube (5); the lower material level sensor (11) is installed at the bottom of the lower glass tube (7).

In the online X-ray fluorescence analysis device for automatically taking samples of cement raw meal, the upper glass tube (5) and the lower glass tube (7) are both transparent glass tubes, wherein the upper glass tube (5) is used to communicate with the upper material level The sensor (9) and the upper telescopic gate (8) cooperate with each other to monitor the material level, and the diameter and height of the lower glass tube (7) are fixed to accommodate a fixed amount of samples.

In the online X-fluorescence analysis device for automatically sampling cement raw meal, the bottom of the upper glass tube (5) has an air nozzle, the air nozzle is an upwardly inclined thin tubular structure and is respectively connected to the upper ventilation valve through a three-way structure. (6) communicate with the pneumatic solenoid valve group (18), and the upper ventilation valve (6) is in a normally open state, so that the inside of the material receiving mechanism communicates with the outside atmosphere during the sampling process.

In the online X-ray fluorescence analysis device for automatically sampling cement raw meal, the material cleaning mechanism includes an electric ball valve for surplus material (16), a pneumatic conveyor for surplus material (17), a pneumatic solenoid valve group (18), a compressed air source (19), sample cleaning electric ball valve (20), sample cleaning pneumatic conveyor (21) and ash discharge pipeline (24); described ash discharge pipeline (24) is connected in the raw material zipper machine of air delivery chute (25) , the remaining material electric ball valve (16), the remaining material pneumatic conveyor (17), the cleaning electric ball valve (20) and the cleaning sample pneumatic conveyor (21) are arranged in series on the ash discharge pipeline (24), and the remaining material electric ball valve (16) And the sample electric ball valve (20) is a normally closed state, used to isolate the influence of the airflow in the air delivery chute (25).

The utility model has the following beneficial effects:

The utility model is an on-line X fluorescence analysis device for automatically sampling cement raw materials, which realizes on-line automatic sampling, quantitative sampling, element composition measurement and automatic sample clearing of cement raw materials after grinding, and solves the manual dependence on traditional laboratories and the Problems with result lag and poor sampling representation;

The utility model uses a miniature spiral reamer driven by a deceleration motor to carry out micro-multiple continuous uniform-speed sampling from the air conveying chute of cement raw material, which ensures controllable blanking speed and strong timeliness and representativeness of sampling.

The utility model utilizes a glass tube with a fixed volume, a two-stage material level sensor and a two-stage ram to control the amount of sample delivery, reduces the influence of material amount fluctuations on the X-ray fluorescence intensity, and improves the detection accuracy of the X-ray fluorescence;

The utility model adopts the way of material receiving and sample preparation in the sealed pipeline, which has a compact structure, simple installation and disassembly, and cooperates with the cleaning mechanism of pneumatic cleaning to make the inside of the material receiving mechanism clean;

The utility model adopts a window film with high mechanical strength and high X-ray transmittance to ensure high X-ray transmittance, and combines with a cleaning mechanism to keep the window and its surroundings clean;

The utility model adopts the X fluorescence measuring machine among them, and adopts the top-illuminated type to measure the flat material surface at the bottom of the material cup, so as to reduce the error caused by the uneven material;

The communication mode adopted by the utility model is convenient for docking with the main control system of the cement plant, and is beneficial to the joint batching system to realize the automatic batching of guiding raw material components.

Description of drawings

Fig. 1 is the structural representation of the on-line X-ray fluorescence analysis device of the utility model automatically taking pattern cement raw meal;

Fig. 2 is the operating logic diagram of the online X fluorescence analysis device for automatically taking samples of cement raw meal in the embodiment of the utility model;

Fig. 3 is the front view of the telescopic flashboard structure in the utility model embodiment;

Fig. 4 is a top view of the telescopic gate structure in the embodiment of the present invention;

Fig. 5 is a schematic structural view of the upper glass tube in the embodiment of the present invention;

Fig. 6 is a schematic structural view of the material cup in the embodiment of the utility model;

Fig. 7 is an X-ray fluorescence measurement energy spectrum diagram of the raw material components in the embodiment of the utility model.

1: geared motor; 2: spiral reamer sampler; 3: receiving electric ball valve; 4: blanking pipe; 5: upper glass tube; 6: upper ventilation valve; 7: lower glass tube; 8: upper telescopic gate ;9: upper material level sensor; 10: lower telescopic gate; 11: lower material level sensor; 12: vibrator; 13: lower air valve; 14: material cup; 15: measuring window; 16: residual material electric ball valve ;17: residual material pneumatic conveyor; 18: pneumatic solenoid valve group; 19: compressed air source; 20: electric ball valve for proofing samples; 21: pneumatic conveyor for proofing samples; Gray pipe; 25: air delivery chute; 26: upper sealing cover; 27: lower sealing cover; 28: O-ring; 29: stainless steel sheet; 30: connection structure; 31: telescopic cylinder; 32: telescopic gate Bracket; 33: material drop hole; 34: fixed structure of material cup; 35: air nozzle on material cup; 36: sample clearing port of material cup; 37: material cup purging air nozzle; 38: window film fixing ring; 39: window film .

Detailed ways

Below in conjunction with specific embodiment, the utility model is described in detail.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the term "X-ray fluorescence" can be understood as the characteristic X-ray fluorescence based on the analysis method of X-ray fluorescence and elements excited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific situation; "upper", "middle", "lower", "front", "rear" are all based on the drawings The position description made by the way of placing objects in; "upstream" and "downstream" refer to the conveying direction of cement raw meal in the chute.

As shown in Fig. 1, the utility model discloses an online X-fluorescence analysis device for automatically sampling cement raw meal, which includes a sampling mechanism, a material receiving mechanism, an X-ray fluorescence measuring mechanism and a material cleaning mechanism. In the embodiment of the utility model, the sampling mechanism, the material receiving mechanism and the X-fluorescence measuring mechanism are arranged sequentially from top to bottom; The sample of the measuring mechanism has good timeliness and strong representativeness; the receiving mechanism is used for quantitative sampling and sending samples to the X-ray fluorescence measuring mechanism, so as to ensure that the sample quantity of the X-ray fluorescence measuring mechanism is always stable, thereby reducing the influence of the matrix effect and improving the measurement stability; The material mechanism discharges the excess material in the material receiving mechanism and the measured sample in the material cup back to the air conveying chute to ensure that the device is clean and free of residual material.

The sampling mechanism comprises a geared motor 1 and a spiral reamer sampler 2 connected to the main shaft of the geared motor 1. The geared motor 1 is a WB85-LD-59-250 miniature cycloidal needle geared motor with a reduction ratio of 1:59 and a torque of 60N m, output shaft speed 23r/min; helical reamer sampler 2 includes outer sleeve and screw, screw diameter is 30mm, screw is fixedly connected with geared motor 1 spindle, thread pitch is 6.5mm, thread groove depth is 5mm, outer sleeve diameter is 42mm The length is 400, the gap between the outer casing and the screw is 1mm, the front end of the outer casing has a feed port with a length of 120mm and a width of 18mm, the feed port is facing the incoming material direction of the air conveying chute 25, and the rear end of the outer casing is fixed with the gear motor 1 flange And open the discharge port near the flange, the discharge port is vertically downward, and connect to the material receiving mechanism below through the sanitary stainless steel pipe.

The sampling mechanism is installed on the side of the air conveying chute 25 in the upstream section after the raw material mill, and continuously samples in a small number of multiple cycles, and drives the spiral reamer sampler 2 through the forward rotation of the main shaft of the geared motor 1. The screw rotates forward at a constant speed, and the raw material in the air conveying chute 25 that enters the feed inlet at the front end of the outer casing of the spiral reamer sampler 2 is brought to the rear end of the outer casing. Fall into the receiving mechanism below through the discharge port;

The air conveying chute 25 is located at the rear end of the raw mill, with a width of 500mm and a height of 300mm, and a downward inclination angle of about 7°. A hole with a diameter of 50mm is opened at a position 70mm below the center of the side of the air conveying chute 25 and a flange is welded. The sampling mechanism is installed on the side of the chute by means of the flange structure, and the length of the spiral reamer sampler 2 deep into the air conveying chute 25 is 250mm; the gear motor 1 rotates forward to drive the spiral reamer sampler 2 out of the air conveying chute at a constant speed For the raw meal samples within 25, the sampling mechanism samples a small number of samples multiple times, multiple samples in a single sampling cycle, the upper limit of forward rotation is 5 times, the interval (delay) is 2s, and the time of single forward rotation is 30s. If the upper limit is exceeded, feedback will be given. When the material is not full, the operation of the device ends. When the sampling is full, the deceleration motor 1 reverses to drive the spiral reamer sampler 2 to reverse, so that the material in the reamer thread gap is discharged back to the air delivery chute 25 through the feed port at the front end of the outer sleeve. Waiting for the next sampling period.

The material receiving mechanism includes a material receiving electric ball valve 3, a blanking pipe 4, an upper glass tube 5, an upper vent valve 6, a lower glass tube 7, an upper telescopic gate 8, an upper material level sensor 9, and a lower telescopic gate 10 , the lower material level sensor 11, the vibrator 12, the lower vent valve 13, the material cup 14 and the measurement window 15; the electric ball valve 3 for receiving materials is a KLD200-DN32 type sanitary stainless steel straight-through electric ball valve with feedback signal, In the normally closed state, it is installed between the outlet of the outer casing of the spiral reamer sampler 2 and the blanking pipe 4; the blanking pipe 4 is a sanitary stainless steel pipe, which is smoothed after 4 times of sanitary chucks. Variable diameter, the outer diameter of the most front tube is Φ32mm, the middle part is Φ25 and Φ19mm, and the bottom is Φ15mm. The sanitary stainless steel tube at the bottom is sealed with the upper glass tube 5 through the transition base structure with an inner groove and an O-ring. The Φ25mm pipeline in the middle of the material pipeline 4 communicates with the ash discharge pipeline 24, the residual material pneumatic conveyer 17 and the residual material electric ball valve 16 sequentially through a quick-connect three-way structure.

The material receiving mechanism is used for quantitative sampling and sending samples to the X fluorescence measuring mechanism, and the raw materials entering the material receiving mechanism fall into the lower glass tube 7 along the blanking pipe 4, the upper glass tube 5, and the upper telescopic gate 8 in sequence. , since the lower telescopic gate 10 connected to the bottom of the lower glass tube 7 is normally closed, the raw material is continuously accumulated in the lower glass tube 7, when the accumulation height exceeds the upper telescopic gate 8 and reaches the position of the upper material level sensor 9 When the upper telescopic gate 8 is closed, the raw material with a fixed volume is encapsulated in the lower glass tube 7, and the excess raw material above the upper telescopic gate 8 is transported along the ash discharge pipe by the residual material pneumatic conveyor 17 of the cleaning mechanism. 24 is discharged back in the air delivery chute 25, and the sample of fixed amount in the lower glass tube 7 falls in the material cup 14 after the lower telescopic flashboard 10 is opened;

The X fluorescence measurement mechanism 23 is used to measure the elemental composition of the cement raw meal entering the material cup 14. After the measurement is completed, the raw material sample in the material cup 14 is moved along the row by the sample cleaning pneumatic conveyor 21 of the material cleaning mechanism. Ash pipe 24 is discharged back in the air delivery chute 25;

The material cleaning mechanism includes a residual material electric ball valve 16, a residual material pneumatic conveyor 17, a pneumatic solenoid valve group 18, a compressed air source 19, a sample cleaning electric ball valve 20, a sample cleaning pneumatic conveyor 21 and an ash discharge pipeline 24; The ash discharge pipeline 24 is connected to the top of the air conveying chute 25 and is in a downstream position away from the sampling mechanism or connected to the nearby raw material zipper machine; the remaining material electric ball valve 16 is the remaining material pneumatic conveyor 17, the electric ball valve for cleaning samples 20 and the sample cleaning machine. The pneumatic conveyor 21 is arranged in series on the ash discharge pipeline 24, the ash discharge pipeline 24 is a PVC steel wire hose with a pipe diameter of 60mm connected to the top of the air delivery chute 25 and downstream of the sampling mechanism, the compressed air source 19 is from the cement production The on-site compressed air tank leads out and adds filtering water and decompression device.

The remaining material electric ball valve 16 and the remaining material pneumatic conveyor 17 in the material cleaning mechanism are used to discharge the remaining material in the upper glass tube 5, and the described material cleaning electric ball valve 20 and sample cleaning pneumatic conveyor 21 are used for The sample cleaning action in the material cup 14, the "residual material discharge" action and the "sample cleaning" action in the material cleaning mechanism are interlocked and cannot be run at the same time, and the "sample cleaning" action is the priority.

The residual material pneumatic conveyor 17 and the proof sample pneumatic conveyor 21 described in the embodiment of the utility model are XFXFJ-100V type pneumatic conveyors, using 0.4Mpa compressed air, and the residual material electric ball valve 16 and the proof sample electric ball valve 20 are KLD200-DN25 sanitary stainless steel straight-through electric ball valve with feedback signal is normally closed, and the interlocking of the two cannot be opened at the same time. Since the electric ball valve takes a certain amount of time from closing to fully opening, take the remaining material cleaning process as an example. When the program executes the remaining material cleaning, the remaining material electric ball valve 16 is opened first, and the remaining material pneumatic conveyer is opened after 5 seconds. After the remaining material cleaning time is completed, the remaining material electric ball valve 16 is first closed, and the remaining material is pneumatically conveyed after 3 seconds Device 17 is closed.

The distance between the X fluorescence measuring mechanism 23 and the measuring window 15 described in the embodiment of the present utility model is 5 mm. Since the sampling mechanism takes about 80 seconds from the beginning of sampling to the "full material connection" under normal production conditions in the embodiment of the present utility model , The measurement period of the X-ray fluorescence measurement mechanism 23 is fixed to 120s, and the measurement objects are Al, Si, S, K, Ca and Fe elements. The X-ray fluorescence measurement energy spectrum of the raw material is shown in FIG. 7 .

The blanking pipeline 4, the upper glass tube 5, the upper telescopic gate 8, the lower glass tube 7, the lower telescopic gate 10, the material cup 14 and the measuring window 15 described in the embodiment of the utility model are sealed and connected sequentially from top to bottom , wherein the upper glass tube 5 and the lower glass tube 7 have the same diameter and both ends are respectively connected with the transition tube seat with a rubber ring inside and an O-ring sinker outside.

The upper telescopic flashboard 8 and the lower telescopic flashboard 10 described in the embodiment of the utility model have the same structure, and both include a stainless steel sheet with round holes and a sealed shell driven by a telescopic cylinder, wherein the upper telescopic flashboard (8) is in the normally open position. state, the lower telescopic flashboard (10) is in the normally closed state.

As shown in Figure 3 and Figure 4, it is the front view and side view of the structure of the lower telescopic flashboard 10 under the normally closed state in the embodiment of the utility model, the lower telescopic flashboard 10 includes an upper sealing cover plate 26 and a lower sealing cover plate 27 , O-ring 28, stainless steel sheet 29, connection structure 30, telescopic cylinder 31 and telescopic gate bracket 32; the upper sealing cover 26 and the lower sealing cover 27 have installation grooves for O-rings and the center is opened Φ12mm Through holes, Φ30mm and 3mm deep grooves are reserved around the through holes for connection with the transition socket at the bottom of the lower glass tube 7; the stainless steel sheet 29 is a 304 stainless steel sheet with a mirror polished surface and a thickness of 1.5mm with a hole diameter of 12mm. The blanking hole 33, the stainless steel sheet 29 is fixed with the telescopic cylinder 31 through the connection structure 30, and the movement in the stroke of the telescopic cylinder 31 drives the forward and backward movement of the stainless steel sheet 29 with the blanking hole to control the feeding switch of the receiving process , the telescopic cylinder 31 is a miniature stainless steel telescopic cylinder, connected to 0.4Mpa compressed air, and fixed on the telescopic gate bracket 32; the O-ring 28 is a 4mm wear-resistant fluororubber ring installed in the upper and lower sealing covers, so that The stainless steel sheet 29 is sealed between the upper and lower cover plates, so that the upper and lower telescopic flashboards perform switching actions and no raw material samples run out of the telescopic flashboards during the purging process of the upper glass tube 5 gas nozzles.

Described upper glass tube (5) and lower glass tube (7) are transparent glass tubes with internal diameter not less than 10mm; , is a quartz glass tube with an inner diameter of 12 mm, an outer diameter of 18 mm, and a length of 60 mm. There is a gas nozzle with an inner diameter of 3 mm and an outer diameter of 6 mm and a length of 25 mm at a distance of 20 mm from the bottom of the upper glass tube 5. The angle between the gas nozzle and the main pipe is 45°. The mouth is connected to the upper vent valve 6, and the normally open state is connected to the atmosphere. When cleaning the remaining material, the upper vent valve 6 is switched to the compressed air of 0.2Mpa from the compressed air source 19, and blows air to the bottom of the upper glass tube 5. For bulk material, the high-speed air flow produced by the pneumatic conveyor 17 will bring out the excess material above the telescopic flashboard 8 and discharge the excess material into the air delivery chute 25 along the blanking pipeline 4 and the ash discharge pipeline 24.

The upper material level sensor 9 and the lower material level sensor 11 described in the embodiment of the utility model are through-beam photoelectric switches with the same structure. The above material level sensor 8 is an example, including two through-beam photoelectric One receiving end at the end, installed on both sides of the bottom of the upper glass tube 5, when the material level in the upper glass tube 5 reaches the position of the sensor 9, cover the opposite light to trigger the "full material signal", and the lower material level sensor 11 Installed on both sides of the bottom of the lower glass tube 7, after the lower telescopic gate 10 is opened, if it is detected that there is no material in the lower glass tube, the "material empty signal" will be triggered.

As shown in Figure 6, it is a schematic structural diagram of the material cup 14 in the embodiment of the present invention. The material cup 14 is a ring-shaped quartz glass tubular structure as a whole, and the described material cup 14 is a tubular structure with a hydrophobic inner wall, and the inner diameter is 2 to 4 times of the glass tube 7, the height is 40mm and the inner diameter is 30mm, the top is connected with the cup fixing structure 34 through the O-ring 28, the cup fixing structure 34 is fixed with the lower telescopic gate 10, and the top of the cup 14 has a The upper air nozzle 35 of the material cup is connected to the lower vent valve 13, which is normally open and connected to the atmosphere. When the sample is cleared, the lower air valve 13 is closed; the middle part of the material cup 14 has a sample clearing port 36 with a diameter of 15mm Connected with the material cleaning mechanism, the middle part is close to the side and fixed with an electric vibrator 12; the lower part of the material cup 14 has 4 material cup purge nozzles 37 evenly distributed, respectively connected to 4 pneumatic ones in the pneumatic solenoid valve group 18. The inlet and outlet solenoid valves are normally closed. When the sample cleaning operation is performed, the four solenoid valves are opened at the same time, and the compressed air with an air pressure of 0.1Mpa is blown to the bottom of the material cup 14 to blow the sample in the material cup. And the inwall of purging feed cup 14; The bottom of feed cup 14 joins with measurement window 15, and this measurement window 15 is made of the window film fixing ring 38 of the surface oily silicone grease of polypropylene material and the window film of macromolecule polymer material 39 compositions.

The device in the utility model embodiment is controlled by PLC system 22, and logic diagram is as shown in Figure 2, and concrete steps are as follows:

1) start;

2) The material-receiving electric ball valve 3 is opened, and then the sampling mechanism enters the sampling cycle, the geared motor 1 rotates forward to sample, multiple samples are taken in a single sampling cycle, the time for a single forward rotation is 30s, the upper limit of forward rotation is 5 times, and the interval (delay) is 2s , the raw material is extracted from the chute and falls into the material receiving mechanism along the discharge pipe 4, and continuously accumulates in the lower glass tube 7. If the material level accumulation reaches the position of the upper material level sensor 9 and the "material full signal" is triggered, the speed will be reduced. Motor 1 terminates forward rotation sampling, otherwise continue sampling, if the number of forward rotations of deceleration motor 1 exceeds the upper limit and the material is not yet full, the system will feedback "material is not full" and end the operation at the same time;

3) When the upper material level sensor 9 triggers the "full material signal", the material receiving electric ball valve 3 is closed, the upper ventilation valve (6) is closed, the upper telescopic gate 8 is closed at the same time, and the reduction motor 1 of the sampling mechanism stops for 2 seconds and then performs the reverse operation. Turn the proof sample so that the material in the thread gap of the reamer is discharged back into the air conveying chute 25 through the feed port at the front end of the outer sleeve;

4) Execute the residual material discharge action: the residual material electric ball valve 16 is opened, and the solenoid valve connected to the residual material pneumatic conveyor 17 in the pneumatic solenoid valve group 18 opens the compressed air source 19 from the compressed air tank and enters the residual material conveyor 17 to generate The high-speed air flow and the pneumatic solenoid valve connected to the air nozzle at the bottom of the upper glass tube 5 in the pneumatic solenoid valve group 18 are opened, so that the compressed air from the compressed air source 19 blows air to the bottom of the upper glass tube 5 and blows away the material. The above-mentioned action keeps After executing for 20s, the state is restored, so that the excess material above the upper telescopic gate 8 is taken out by the high-speed airflow generated by the excess material pneumatic conveyor 17 and discharged into the air conveying chute 25 along the blanking pipeline 4 and the ash discharge pipeline 24;

5) The upper ventilation valve (6) is opened, and the upper telescopic gate 8 is opened;

6) The lower telescopic gate 10 is opened, so that a fixed amount of raw material samples in the lower glass tube 7 fall into the material cup 14 below, and after keeping for 5 seconds, it is closed and opened once, and the vibrator 12 and the lower telescopic gate 10 Synchronous on and off;

7) If the lower material level sensor 11 triggers the "material empty signal", the lower telescopic gate 10 is closed and enters the next step (8); otherwise, the lower telescopic gate 10 repeats the action of step (6). 10 When the number of times of opening exceeds the preset 3 times, and the lower material level sensor 11 still does not trigger the "material empty signal", it will feedback the prompt of "abnormal material falling", and the device will end its operation;

8) The lower ventilation valve 13 is closed;

9) The X-ray fluorescence measurement mechanism performs the elemental composition measurement of the sample in the material cup 14, and the program executes steps (2), (3), and (4) at the same time;

10) Execute the sample cleaning action: after the measurement is completed, the electric ball valve 20 for cleaning the sample is opened, the solenoid valve connected to the sample cleaning pneumatic conveyor 21 in the pneumatic solenoid valve group 18 is opened, and the compressed air source 19 from the compressed air tank enters the sample cleaning conveyor 21 Generate high-speed air flow, and the solenoid valves in the pneumatic solenoid valve group 18 that communicate with the cup purge nozzle 37 at the bottom of the cup 14 are opened simultaneously, so that the compressed air from the compressed air source 19 blows air on the bottom of the cup 14 to blow away the air. For the sample material, the above actions are kept for 20 seconds and then the original state is restored, so that the raw material sample in the material cup 14 is taken out by the high-speed airflow generated by the sample cleaning pneumatic conveyor 21 and discharged back into the air conveying chute 25 along the ash discharge pipe 24 ;

11) The lower ventilation valve 13 is opened; skip to step (5), and execute in a loop.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

Claims (10)

1. a kind of online xrf analysis device of automatic sampling type cement slurry, which is characterized in that including sampling mechanism, receiver Structure, X-fluorescence measuring mechanism and down feather filling mechanism；The sampling mechanism is used for defeated from the air of cement slurry grinding machine rear end Upstream section Send at the uniform velocity micro acquisition raw material sample in skewed slot；The material receiving mechanism is for carrying out the judgement of sample doses, quantitative sampling and to X Fluorescence measurement mechanism sample presentation；The X-fluorescence measuring mechanism is analyzed for cement slurry elemental composition；The down feather filling mechanism is used It is expelled back into air conveyer flume again in by the sample measured in the clout and material cup in material receiving mechanism；Wherein Sampling Machine The continuous sampling of structure intermittence is simultaneously run simultaneously with X-fluorescence measuring mechanism, and material receiving mechanism is for quantitative sampling and gives X-fluorescence measuring machine Structure sample presentation ensures and is used for X-fluorescence measuring mechanism sample doses all-the-time stable, down feather filling mechanism is by material extra in material receiving mechanism and material The sample measured in cup, which is expelled back into again in air conveyer flume, have been ensured in device completely without clout, is realized raw to cement The on-line analysis of material；The sampling mechanism includes the spiral reamer sampler (2) of decelerating motor (1) and its driving, is mounted on life The side of the air conveyer flume (25) of the Upstream section after grinding machine is expected, with a small amount of multiple endless form continuous sampling.

2. the online xrf analysis device of automatic sampling type cement slurry according to claim 1, which is characterized in that slow down Motor (1) can positive and negative rotation work, rotate forward sampling, invert stock layout, being driven forward spiral reamer sampler (2), at the uniform velocity to take air out of defeated The raw material sample in skewed slot (25) is sent, the rotating forward time is fixed every time, and number is rotated forward in a sampling period and is equipped with the upper limit, slows down electric Material in reverse drive spiral reamer sampler (2) the discharge reamer screw thread of machine (1).

3. the online xrf analysis device of automatic sampling type cement slurry according to claim 2, which is characterized in that described Decelerating motor (1) output shaft revolving speed be not more than 25r/min；Spiral reamer sampler (2) is made of screw rod and outer tube, outside Casing rear end and decelerating motor (1) flange are fixed and are outputing material mouth close to flange position, discharge port vertically downward so that raw material It can vertically be fallen along blanking pipeline (4).

4. the online xrf analysis device of automatic sampling type cement slurry according to claim 3, which is characterized in that screw rod From side middle and lower part, level is deep into the internal length of air conveyer flume (25) no more than 300mm, and screw flight depth is not Less than 5mm；Outer tube and screw clearance are not more than 2mm, and outer tube front end is provided with charging slot length, and to be no less than 100mm width not small In 15mm.

5. the online xrf analysis device of automatic sampling type cement slurry according to claim 1, which is characterized in that described Material receiving mechanism include splicing electrical ball valve (3), blanking pipeline (4), upper glass tube (5), upper breather valve (6), lower glass tube (7), upper flexible flashboard (8), upper level sensor (9), lower flexible flashboard (10), lower level sensor (11), lower breather valve (13), material cup (14) and measurement window (15)；Splicing electrical ball valve (3) is normally off, is mounted on spiral reamer sampler (2) Between blanking pipeline (4)；Seal and be connected with down feather filling mechanism in the middle part of the blanking pipeline (4), blanking pipeline (4) bottom with it is upper Glass tube (5) is tightly connected；The upper flexible flashboard (8) is identical with lower flexible flashboard (10) structure, including telescopic cylinder drives The dynamic stainless steel substrates and sealing shell with circular hole, wherein upper flexible flashboard (8) are in normally open, at lower flexible flashboard (10) In normally off.

6. the online xrf analysis device of automatic sampling type cement slurry according to claim 5, which is characterized in that described Lower flexible flashboard (10) include top cover labyrinth plate (26), lower sealing cover plate (27), O-ring (28), stainless steel substrates (29), connection Structure (30), telescopic cylinder (31) and flexible flashboard bracket (32)；Wherein top cover labyrinth plate (26) and lower sealing cover plate (27) are equal Mounting groove and center with O-ring open hole, and deep gouge is reserved in through-hole periphery, for the mistake with lower glass tube (7) bottom end Cross tube socket connection；Stainless steel substrates (29) are 304 stainless steel substrates of surface mirror finish and are provided with a material-dropping hole (33), stainless steel Piece (29) is fixed by connection structure (30) and telescopic cylinder (31), is had by the movement in telescopic cylinder (31) stroke to drive The back-and-forth motion of the stainless steel substrates (29) of material-dropping hole is so as to control blanking switch, telescopic cylinder (31) is that mini stainless steel is stretched Contracting cylinder, connects compressed air, is fixed on flexible flashboard bracket (32).

7. the online xrf analysis device of automatic sampling type cement slurry according to claim 5, which is characterized in that described Upper level sensor (9) and lower level sensor (11) be scattered reflection type or correlation type photoelectric sensor switch；Upper material position Sensor (9) is mounted on the bottom of glass tube (5)；Lower level sensor (11) is mounted on the bottom of lower glass tube (7).

8. the online xrf analysis device of automatic sampling type cement slurry according to claim 5, which is characterized in that described Upper glass tube (5) and lower glass tube (7) be transparent glass tube, wherein upper glass tube (5) are used for and upper level sensor (9) Monitoring material position is cooperated to upper flexible flashboard (8), the caliber and height of lower glass tube (7) are fixed for accommodating fixed amount Sample.

9. the online xrf analysis device of automatic sampling type cement slurry according to claim 5, which is characterized in that upper glass Glass pipe (5) bottom have gas nozzle, gas nozzle be up inclined tubule structures and by three-port structure respectively with upper breather valve (6) It is connected to air-operated solenoid valve group (18), upper breather valve (6) is normally open, so that executing the inside of material receiving mechanism in sampling process It is communicated with ambient atmosphere.

10. the online xrf analysis device of automatic sampling type cement slurry according to claim 1, which is characterized in that described Down feather filling mechanism include clout electrical ball valve (16), clout air conveyor (17), air-powered electromagnetic valve group (18), compressed air source (19), final proof electrical ball valve (20), final proof air conveyor (21) and removing ash pipeline (24)；Removing ash pipeline (24) access In the raw material machine for zipper of air conveyer flume (25), clout electrical ball valve (16), clout air conveyor (17), final proof electric ball Valve (20) and final proof air conveyor (21) are disposed in series on removing ash pipeline (24), and clout electrical ball valve (16) and final proof are electronic Ball valve (20) is normally off, the influence for the air-flow in air-isolation conveying skewed slot (25).