CN115487921B - Full-automatic powder sample preparation system and preparation method - Google Patents

Abstract

The invention discloses a full-automatic powder sample preparation system and a preparation method, wherein the preparation system comprises a main frame, a sample tank, a primary screening mechanism, a conveying manipulator, a grinding and drying mechanism, a secondary screening mechanism, a split charging mechanism and a cleaning mechanism; wherein the primary screening mechanism, the grinding and drying mechanism and the secondary screening mechanism share one sample tank, and the sample tank is transported by the transporting manipulator to pass through primary screening, grinding and drying and secondary screening processes respectively. In the working process of the full-automatic powder sample preparation system, no process of pouring powder or replacing a container exists after sample injection is carried out on the sample until the sample is manufactured.

Description

Full-automatic powder sample preparation system and preparation method

Technical Field

The invention relates to a full-automatic powder sample preparation system and a preparation method, and belongs to the field of experimental instruments.

Background

In the analysis and detection process of minerals, soil, traditional Chinese medicines and the like, the collected samples are usually required to be dried, ground, screened and the like, and qualified powder standard samples are prepared for subsequent analysis and detection. The existing powder preparation process is mostly manually prepared, and the preparation process comprises the steps of manually airing, drying samples, manually screening the samples, manually grinding, manually screening the samples, sampling, manually bottling and measuring the weight, and has the advantages of low efficiency, difficult quality assurance and poor manual working environment.

Chinese patent application (publication No. CN111855336 a) discloses a full-automatic soil sample preparation system that realizes automatic sample preparation by providing a crushing and grinding mechanism, a screening mechanism, a sample loading mechanism, a manipulator, and a cleaning assembly. However, the soil sample is not provided with a preliminary screening mechanism, so that stones, rhizomes and other impurities in the soil sample are mixed into a final sample (or manually removed in advance); a drying and heating mechanism is independently arranged before crushing and grinding to carry out drying treatment on the soil sample; in addition, in the process from crushing grinding to screening, a manipulator overturning grinding cylinder is adopted to pour into a screening mechanism, so that dust is easy to generate.

Chinese patent application (publication No. CN111940042 a) discloses a soil sample preparation device, including grinding mechanism, screening drying mechanism and bottled mechanism, through pouring soil into at the feed channel, the soil is smashed through grinding mechanism and is ground, send into screening drying mechanism, screening drying mechanism sieves the drying enough to soil sample, preserve in bottling through bottled mechanism, and the device has improved sample preparation degree of automation. But it is also not provided with a preliminary screening mechanism; and the grinding mechanism, the screening and drying mechanism and the bottling mechanism are relatively and fixedly arranged, so that the cleaning of the mechanisms is inconvenient.

Disclosure of Invention

The invention aims to overcome some or some defects in the prior art, and provides a novel full-automatic powder sample preparation system and a preparation method.

According to a first aspect of the present invention, there is provided a full-automatic powder sample preparation system, comprising a main frame, a sample tank, a primary screening mechanism, a transporting manipulator, a grinding and drying mechanism, a secondary screening mechanism, a sub-packaging mechanism and a cleaning mechanism, wherein the primary screening mechanism, the grinding and drying mechanism and the secondary screening mechanism share one sample tank, and the transporting manipulator transports the sample tank through primary screening, grinding and drying and secondary screening processes, respectively.

The primary screening mechanism comprises a base connecting plate, a primary screening rotary cylinder, a primary screening cover, a screening cover switch cylinder and a primary screening motor.

The base connecting plate is used for being fixedly connected with the main frame, the primary screening connecting plate is movably connected with the base connecting plate through a horizontal guide rail, the primary screening rotating cylinder is connected with the primary screening connecting plate and the primary screening, the primary screening cover is driven by the screening cover switch cylinder, the primary screening motor is fixed on the base connecting plate and is connected with the primary screening connecting plate through a connecting rod mechanism, and the primary screening connecting plate can be driven to horizontally shake through the primary screening motor, so that the primary screening is driven to carry out screening operation.

The conveying manipulator comprises a conveying connecting plate, a conveying substrate, a conveying horizontal walking motor, a conveying up-and-down motion motor, a conveying rotary motion motor, a hand grabbing sliding table, a hand grabbing cylinder and clamping jaws.

The conveying connecting plate is in sliding connection with the main frame through a horizontal guide rail, the conveying horizontal walking motor is fixed on the conveying connecting plate, and the conveying connecting plate is driven by a horizontal screw rod to horizontally move along the horizontal guide rail.

The conveying base plate is fixedly connected with the conveying connecting plate, the conveying up-and-down motion motor is fixed on the conveying base plate, a vertical guide rail is arranged on the conveying base plate, the manual sliding table is movably connected with the vertical guide rail, and the conveying up-and-down motion motor drives the manual sliding table to move up and down along a vertical rail through a vertical lead screw.

The conveying rotary motion motor is arranged on the hand grabbing sliding table, the hand grabbing cylinder is arranged on an output shaft of the rotary motion motor, the hand grabbing cylinder is connected with the clamping jaw, and the clamping jaw is used for clamping the sample tank.

The grinding and drying mechanism comprises a grinding swing driver, a grinding substrate, a grinding rotary motor, a grinding cover plate, a grinding knife and a cover plate driver.

The grinding swing driver is fixed on the main frame, the grinding substrate is connected with the grinding swing driver, the grinding cover plate is movably connected with the grinding substrate through a vertical guide rail, and the grinding cover plate moves up and down along the vertical guide rail through the driving of the cover plate driver.

The grinding rotary motor is fixed on the grinding cover plate, an output shaft of the grinding rotary motor downwards penetrates through the grinding cover plate, a grinding knife is installed on the output shaft, and the grinding base plate is provided with a grinding table which extends outwards and is used for receiving the sample tank.

The grinding table is provided with a heating mechanism which can heat the sample tank, and the grinding cover plate is in sealing connection with the sample tank during working.

The secondary screening mechanism comprises a secondary screen, a secondary screen rotary driver, a rotary base plate, a lifting cylinder, a screening sliding table, a switching valve cylinder and a secondary screen motor.

The secondary screen rotary driver is fixedly arranged on the main frame, and the rotary base plate is connected with the secondary screen rotary driver; the screening sliding table is movably connected with the rotary base plate through a guide rail and is driven by a lifting cylinder; the secondary screen motor is connected with the secondary screen to drive the secondary screen to perform screening operation; the discharge port of the secondary sieve is provided with a switch valve which is driven to open and close by a switch valve cylinder.

The split charging mechanism comprises a blanking manipulator, a blanking valve and a sample split charging table.

The blanking manipulator comprises a blanking connecting plate, a blanking substrate, a blanking horizontal traveling motor, a blanking up-and-down motion motor, a lifting slide plate and a valve body mounting plate.

The blanking connecting plate is in sliding connection with the main frame through a horizontal guide rail, a blanking horizontal traveling motor is fixed on the blanking connecting plate, and the blanking connecting plate is driven by a horizontal screw rod to horizontally move along the horizontal guide rail.

The blanking base plate is fixedly connected with the blanking connecting plate, the blanking up-and-down motion motor is fixed on the blanking base plate, a vertical guide rail is arranged on the blanking base plate, the lifting slide plate is movably connected with the vertical guide rail, and the blanking conveying up-and-down motion motor drives the lifting slide plate to move up and down along a vertical rail through a vertical screw rod.

The valve body mounting plate is fixed on the lifting slide plate, and the blanking valve is fixed on the valve body mounting plate.

The blanking valve comprises a valve body, a valve core and a valve core rotary driver; the valve body is provided with a material receiving opening, and a material discharging opening is arranged below the valve body; the valve body is connected with the valve core through a bearing seat, and the valve core rotary driver is connected with the valve core; the valve core main body is of a transverse cylinder shape, and a plurality of transverse grooves are formed in the periphery of the cylinder at intervals. Preferably, the plurality of transverse grooves have two volume specifications, and the grooves of the two volume specifications are arranged at intervals. Preferably, the valve body is provided with a vent hole leading to the valve core for cleaning the valve core by high-pressure gas.

The sample split charging platform comprises a split charging base plate, a weighing sensor, a material bottle mounting plate and a material bottle; the split charging base plate is fixedly connected with the main frame, the weighing sensor is arranged on the split charging base plate, the material bottle mounting plate is arranged on the weighing sensor, and the material bottle is arranged on the material bottle mounting plate.

The cleaning mechanism comprises a cleaning mounting substrate, a cleaning up-down motion cylinder, a cleaning lifting table, a hairbrush and a cleaning rotary driver, wherein the cleaning mounting substrate is fixed on the main frame; the cleaning lifting table is arranged on the cleaning installation substrate through a vertical guide rail and is driven by a cleaning up-and-down motion cylinder; the brush is fixed on the output shaft of the cleaning rotary driver.

According to a second aspect of the present invention, there is provided a full-automatic powder sample preparation method, adopting the above-mentioned full-automatic powder sample preparation system, comprising the following steps:

(1) The primary screen cover is opened, and the conveying manipulator conveys the sample tank to the position below the primary screen; pouring the sample into a primary screen, and closing a primary screen cover; the primary screening motor drives the primary screening connecting plate to horizontally shake so as to finish primary screening operation;

(2) The conveying manipulator conveys the sample tank to the lower part of the grinding and drying mechanism, the sample tank is placed on the grinding table, the grinding cover plate moves downwards to cover the sample tank, and grinding operation is performed; according to the dry and wet state of the sample, selecting whether to start the heating mechanism;

(3) The primary screen is turned over for 180 degrees while the step (2) is operated, the oversize products which do not pass through the primary screen are poured into a waste box, a primary screen cleaning mechanism is used for cleaning the primary screen, and after the primary screen cleaning mechanism is used for cleaning, the primary screen and the primary screen cleaning mechanism are reset;

(4) After the step (2) is finished, the grinding cover plate moves upwards, and the grinding knife is separated from the sample tank; the conveying manipulator picks up the sample tank and conveys the sample tank to the secondary screening mechanism;

(5) After the sample tank is placed on the screening sliding table, the lifting cylinder drives the screening sliding table to move upwards, so that the opening end of the sample tank is in butt joint with the secondary screen; then, the secondary screen rotary driver drives the rotary substrate to rotate 180 degrees, then the secondary screen is driven by the secondary screen motor to carry out screening operation, and qualified samples are screened out through the screen mesh of the secondary screen;

(6) The blanking manipulator conveys the blanking valve to the lower part of the secondary screening mechanism, and the receiving hopper of the secondary screening mechanism discharges materials to the receiving opening of the blanking valve; the blanking manipulator conveys the blanking valve to the position above the sample sub-packaging table for sub-packaging;

(7) While the step (6) is running, the transporting manipulator transports the sample tank to the cleaning mechanism, and the sample tank is reset to the lower part of the primary screening mechanism after cleaning; pouring the oversize material of the secondary sieve into a waste box, and cleaning the secondary sieve;

(8) And (3) after the step (6) is finished, resetting the blanking valve, and cleaning by high-pressure gas.

The full-automatic powder sample preparation system has the following advantages:

1. the sample injection requirement is low, the granularity is within 10mm, and the primary screening function is realized.

2. The efficiency is high, and 1-3kg of sample can be treated at one time; if the sample does not need to be dried, a sample can be processed for 5 minutes.

3. The coarse screening, crushing, fine screening and material separating parts are provided with special cleaning mechanisms, and the self-cleaning mechanism has a complete self-cleaning function and ensures that the samples cannot cross-pollute.

4. The crushing adopts a high-speed vibration crushing process, so that all particles can flow, all particles can conveniently contact the crushing cutter, and the sample can be crushed completely.

5. The sample is covered from coarse screen, broken, fine screen operation, and equipment internal environment is negative pressure environment, lets operational environment cleaner, and the equipment is outer to have no dust.

6. Simple structure, difficult damage, the fault rate is low.

7. Compared with a screening mechanism adopting a vibrating motor, the device adopts simulated manual screening to screen in a shaking mode, and has high efficiency and low noise.

8. After sample injection, no process of pouring powder and replacing the container is carried out until the sample preparation is completed.

Drawings

FIG. 1 is a perspective view of the assembly of a fully automated powder sample preparation system of the present invention;

FIG. 2 is a front view of the assembly of the fully automated powder sample preparation system of the present invention;

FIG. 3 is a schematic perspective view of a primary screening mechanism;

FIG. 4 is a schematic perspective view of a transfer robot;

FIG. 5 is a schematic perspective view of a grinding and drying mechanism;

FIG. 6 is a perspective view showing an initial state of the secondary screening mechanism;

FIG. 7 is a perspective view showing a screening state of the secondary screening mechanism;

fig. 8 is a schematic diagram of a three-dimensional state of the blanking manipulator;

FIG. 9 is a schematic perspective view of a blanking valve;

FIG. 10 is another perspective view of the blanking valve;

FIG. 11 is a schematic perspective view of a blanking valve spool;

FIG. 12 is a schematic perspective view of a dispensing station;

FIG. 13 is a schematic perspective view of a cleaning mechanism;

FIG. 14 is a schematic front view of a cleaning mechanism;

FIG. 15 is a flowchart of the operation of the fully automated powder sample preparation system of the present invention.

Detailed Description

Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims. The following detailed description of specific embodiments of the invention refers to the accompanying drawings.

Referring to fig. 1-2, the full-automatic powder sample preparation system according to the present invention includes a main frame 1, a primary screening mechanism 2, a carrying manipulator 3, a grinding and drying mechanism 4, a secondary screening mechanism 5, a sub-packaging mechanism and a cleaning mechanism 9. Wherein the primary screening mechanism 2, the grinding and drying mechanism 4 and the secondary screening mechanism 5 share one sample tank 10, and the sample tank 10 is transported by the transporting manipulator 3 to undergo primary screening, grinding and drying and secondary screening processes respectively. The split charging mechanism consists of a blanking manipulator 6, a blanking valve 7 and a sample split charging table 8.

The main frame 1 is provided with a rear side plate 1-1, a front side plate 1-2 and a bottom plate 1-3, wherein the rear side plate 1-1 is provided with a main frame horizontal guide rail 1-4 and a main frame horizontal screw rod 1-5 which are used for being movably connected with the conveying manipulator 3 and the blanking manipulator 6. The primary screening mechanism 2, the grinding and drying mechanism 4, the secondary screening mechanism 5 and the sample split charging table 8 are fixedly arranged with the front side plate 1-2. The bottom plate 1-3 is provided with dust collecting holes, and the lower part of the bottom plate 1-3 is provided with a dust collecting bin 1-6. The main frame 1 can be provided with transparent dust cover, and transparent dust cover is connected with exhaust mechanism, keeps the negative pressure environment, all sets up in transparent dust cover with each mechanism subassembly, can not produce raise dust polluted environment during the operation.

Referring specifically to fig. 3, the preliminary screening mechanism 2 includes a base connection plate 2-1, a preliminary screening connection plate 2-2, a preliminary screening rotary cylinder 2-3, a preliminary screening 2-4, a preliminary screening cover 2-5, a screening cover opening and closing cylinder 2-6, and a preliminary screening motor 2-7.

The base connecting plate 2-1 is fixedly arranged on the front side plate 1-2 of the main frame 1, and the primary screening connecting plate 2-2 is movably connected with the base connecting plate 2-1 through the base horizontal guide rail 2-8 and the sliding block 2-9. The primary screening rotary cylinder 2-3 is arranged on the primary screening connecting plate 2-2, the primary screening rotary cylinder 2-3 is connected with the primary screening 2-4 through the primary screening clamp holder 2-11, and after screening is completed, the primary screening 2-4 can be turned 180 degrees through the primary screening rotary cylinder 2-3, and oversize products are poured out. The primary screening cover 2-5 is arranged above the primary screening 2-4, one end of the primary screening cover 2-5 is movably connected with the primary screening connecting plate 2-2 through a pin shaft, and the screening cover switch cylinder 2-6 is arranged on the primary screening connecting plate 2-2 and used for driving the primary screening cover 2-5 to be opened and closed. The primary screening motor 2-7 is fixed on the base connecting plate 2-1 and is connected with the primary screening connecting plate 2-2 through the connecting rod mechanism 2-10, and the primary screening connecting plate 2-2 can be driven to horizontally shake through the primary screening motor 2-7, so that the primary screening 2-4 performs screening operation. The shaking stroke is generally 3-50mm. In the screening, the sample tank 10 is transported by the transporting manipulator 3 to be in butt joint with the lower part of the primary screen 2-4.

Referring specifically to fig. 4, the conveyance robot 3 includes a conveyance connection plate 3-1, a conveyance substrate 3-3, a conveyance horizontal travel motor 3-2, a conveyance up-down movement motor 3-4, a conveyance rotational movement motor 3-5, a hand grip slide 3-6, a hand grip cylinder 3-10, and a grip jaw 3-11.

The conveying connecting plate 3-1 is in sliding connection with the main frame 1 through a main frame horizontal guide rail 1-4, the conveying horizontal traveling motor 3-2 is fixed on the conveying connecting plate 3-1, and the conveying connecting plate 3-1 is driven to horizontally move along the main frame horizontal guide rail 1-4 through a main frame horizontal lead screw 1-5. The conveying base plate 3-3 is fixedly connected with the conveying connecting plate 3-1, the conveying up-and-down motion motor 3-4 is fixed on the conveying base plate 3-3, the conveying base plate 3-3 is provided with a conveying vertical guide rail 3-7, the hand-grabbing sliding table 3-6 is movably connected with the conveying vertical guide rail 3-7, and the conveying up-and-down motion motor 3-4 drives the hand-grabbing sliding table 3-6 to move up and down along the conveying vertical guide rail 3-7 through the conveying vertical lead screw 3-8. The up-and-down movement mechanism is provided with a band-type brake device, so that the hand-grabbing sliding table 3-6 can be prevented from sliding off. The conveying rotary motion motor 3-5 is arranged on the grabbing sliding table 3-6, and the conveying rotary motion motor 3-5 is connected with the grabbing cylinder 3-10 through a speed reducer 3-9. The hand grasping cylinder 3-10 is connected with the clamping jaw 3-11, and the clamping jaw 3-11 is used for clamping the sample tank 10. The hand-grabbing cylinder 3-10 adopts a magnetic switch to judge the opening and closing degree.

Referring specifically to fig. 5, the polishing and drying mechanism 4 includes a polishing swing driver 4-1, a polishing substrate 4-2, a polishing rotary motor 4-3, a polishing cover plate 4-4, a polishing blade 4-5, and a cover plate driver 4-6.

The polishing swing driver 4-1 adopts a motor, and an output shaft thereof is connected with the polishing substrate 4-2. The lower part of the polishing substrate 4-2 is provided with an outwardly extending polishing table 4-9 for receiving the sample tank 10. The grinding cover plate 4-4 is movably connected with the grinding base plate 4-2 through a grinding vertical guide rail 4-7, and is driven by a cover plate driver 4-6 to move up and down along the grinding vertical guide rail 4-7. In one embodiment, the cover plate driver 4-6 is connected with the grinding cover plate 4-4 through a telescopic rod 4-8 by using an air cylinder. The grinding rotary motor 4-3 is fixed on the grinding cover plate 4-4, an output shaft of the grinding rotary motor downwards passes through the grinding cover plate 4-4, and a grinding knife 4-5 is arranged on the output shaft. The grinding blade 4-5 preferably adopts zirconia ceramic blade, and the crushing speed is 500-6000 rpm.

The grinding table 4-9 is provided with a heating mechanism which can heat the sample tank 10, and the grinding cover plate 4-4 is in sealing connection with the sample tank 10 during working. The lapping cover 4-4 is provided with air outlet holes and may be provided with a vacuum pumping assembly for pumping vacuum during heating. The grinding table 4-9 is also provided with a sample tank positioning mechanism, for example, a groove or a positioning convex point which is matched with the sample tank.

When the grinding rotary motor 4-3 drives the grinding knife 4-5 to grind the sample in the sample tank 10, the grinding swing driver 4-1 can drive the grinding substrate 4-2 to swing and rotate by plus or minus 45 degrees, so that the sample flows in the sample tank 10, and the heating mechanism can be selectively opened or closed according to the dry and wet state of the processed sample. After finishing the grinding, the cover plate driver 4-6 drives the cover plate 4 to move upwards, so that the grinding cutter 4-5 is separated from the sample pot 10. The grinding mode of arranging the grinding component on the upper cover plate ensures that the sample tank is very convenient to transport and clean.

Referring specifically to fig. 6-7, the secondary screening mechanism 5 includes a secondary screen 5-5, a secondary screen rotary drive 5-1, a rotary base plate 5-2, a lifting cylinder 5-3, a screening slide table 5-4, a receiving hopper 5-6, a switching valve 5-7, a switching valve cylinder 5-8 and a secondary screen motor 5-9.

The secondary screen rotary driver 5-1 is fixedly arranged on the main frame, the rotary base plate 5-2 is connected with the secondary screen rotary driver 5-1, and the secondary screen rotary driver 5-1 can adopt a motor; the screening sliding table 5-4 is movably connected with the rotary base plate 5-2 through a secondary screening vertical guide rail 5-10 and is driven by the lifting cylinder 5-3; the secondary screen motor 5-9 is connected with the secondary screen 5-5; one end of the secondary sieve 5-5 is fixedly connected with the receiving hopper 5-6, and the other end is used for being in butt joint with the sample tank 10; the discharge port of the receiving hopper 5-6 is provided with a switch valve 5-7, and the switch valve is driven to open and close by a switch valve cylinder 5-8.

The secondary screen motor 5-9 is fixedly arranged on the rotary base plate 5-2, the secondary screen motor 5-9 is connected with the secondary screen 5-5 through a connecting rod mechanism, and the secondary screen 5-5 is in sliding connection with the rotary base plate 5-2 through a secondary screen horizontal guide rail 5-11. The manual horizontal shaking screening is simulated through the connecting rod mechanism, and the noise is low.

The screening slipway 5-4 is also provided with a sample tank positioning mechanism, such as a groove or a convex point which is matched with the bottom of the sample tank, so that the center is accurately positioned when the sample tank 10 is placed, and the screening slipway is convenient to be in butt joint with the secondary screen 5-5.

Referring specifically to fig. 6, in an initial state, a secondary screen 5-5 and a receiving hopper 5-6 are reversely buckled above a screening sliding table 5-4, and after a sample tank 10 containing a sample is placed on the screening sliding table 5-4, a lifting cylinder 5-3 drives the screening sliding table 5-4 to move upwards, so that an opening end of the sample tank is in butt joint with the secondary screen; then, the secondary screen rotation driver 5-1 drives the rotation base plate 5-2 to rotate 180 degrees (see fig. 7), and then the secondary screen 5-5 is driven by the secondary screen motor 5-9 to perform a screening operation.

Referring specifically to fig. 8, the discharging manipulator 6 includes a discharging connecting plate 6-1, a discharging base plate 6-3, a discharging horizontal traveling motor 6-2, a discharging up-and-down motion motor 6-4, and a lifting slide plate 6-5.

The blanking connecting plate 6-1 is used for being movably connected with the main frame 1 through the main frame horizontal guide rail 1-4, and the blanking horizontal traveling motor 6-2 is fixed on the blanking connecting plate 6-1 and used for driving the blanking connecting plate 6-1 to horizontally move. The blanking base plate 6-3 is fixedly connected with the blanking connecting plate 6-1, the blanking up-and-down motion motor 6-4 is fixed on the blanking base plate 6-3, the blanking base plate 6-3 is provided with a blanking vertical guide rail 6-9, the lifting slide plate 6-5 is movably connected with the blanking vertical guide rail 6-9, and the blanking up-and-down motion motor 6-4 drives the lifting slide plate 6-5 to move up and down along the blanking vertical guide rail 6-9 through the blanking vertical lead screw 6-10. The lifting slide plate 6-5 is provided with a valve body mounting plate 6-6, and the blanking valve 7 is fixed on the valve body mounting plate 6-6.

Referring specifically to fig. 9-11, the blanking valve 7 includes a valve body 7-1, a spool 7-2, and a spool rotation driver 7-5. A material receiving opening 7-4 is arranged above the valve body 7-1, and a material discharging opening 7-6 is arranged below the valve body. The valve body 7-1 is connected with the valve core 7-2 through a bearing seat 7-3. The spool rotation driver 7-5 is connected to the spool 7-2. The main body of the valve core 7-2 is in a transverse cylinder shape, and a plurality of transverse grooves 7-7 are formed in the periphery of the cylinder at intervals. The valve body 7-1 is provided with a vent hole leading to the valve core 7-2 for cleaning the valve core 7-2 by high-pressure gas. The spool rotation driver 7-5 typically employs a servo motor.

When the blanking valve is closed, the blanking port 7-6 is in butt joint with a non-transverse groove part on the valve core 7-2; when the discharging opening 7-6 is communicated with the transverse groove 7-7, discharging is carried out. The valve core rotary driver drives the interval groove type valve core to rotate and discharge, so that the discharge can be quantitatively controlled according to the parts, and the discharge error is the volume of one groove. Preferably, the plurality of transverse grooves 7-7 have two volume specifications, namely, the size and the size, and the grooves with the two volume specifications are arranged at intervals, so that the weight is easier to accurately control in the packaging process.

Referring specifically to fig. 12, the sample dispensing station 8 includes a dispensing base plate 8-1, a load cell 8-2, a vial mounting plate 8-3, and a vial 8-4; the weighing sensor 8-2 is arranged on the sub-packaging substrate 8-1, the material bottle mounting plate 8-3 is arranged on the weighing sensor 8-2, and a plurality of material bottles 8-4 are arranged on the material bottle mounting plate 8-3 side by side. During material distribution, the amount of each material bottle is judged according to the total increment measured by the weighing sensor 8-2.

The operation of the dispensing mechanism is briefly described below.

Firstly, a blanking valve 7 is moved to a position below a receiving hopper 5-6 of a secondary screening mechanism 5 by a blanking manipulator 6; qualified materials of the receiving hopper 5-6 are received through the receiving port 7-4. Then the blanking valve 7 is moved to the position of the sample split charging table 8 by the blanking manipulator 6; the lifting slide plate 6-5 is driven to move up and down through the blanking up-and-down movement motor 6-4, so that the blanking valve 7 is positioned above the first material bottle 8-4; the valve core rotary driver 7-5 drives the valve core 7-2 to rotate, powder is split into a first material bottle 8-4 through the discharging opening 7-6, and when the weighing sensor 8-2 detects that the weight reaches the preset weight, the discharging valve 7 is closed; the blanking connecting plate 6-1 is driven to horizontally move by the blanking horizontal running motor 6-2, so that the blanking valve 7 moves to the position above the second material bottle 8-4 for sub-packaging powder; and by analogy, the automatic sub-packaging of the material bottles 8-4 is completed.

Referring specifically to fig. 13-14, the cleaning mechanism 9 includes a mounting substrate 9-1, a lift drive 9-2, a lift table 9-3, a brush 9-4, and a rotation drive 9-5. The lifting table 9-3 is arranged on the mounting substrate 9-1 through a vertical guide rail and is driven by the lifting driver 9-2; the brush 9-4 is fixed to an output shaft of the rotary driver 9-5.

In particular, the brush 9-4 is connected to an output shaft of the rotary driver 9-5 through a brush fixing cylinder 9-6. The brush 9-4 is fixed to the peripheral wall of the brush fixing cylinder 9-6. The brush holding cylinder 9-6 may be provided with various specifications, and the brush 9-4 may be provided in a single layer or in multiple layers on the brush holding cylinder 9-6. Preferably, the bottom of the hairbrush fixing cylinder 9-6 is provided with an air inlet channel, and high-pressure air is introduced into the hairbrush fixing cylinder during operation; the peripheral wall of the brush fixing cylinder 9-6 is provided with air outlet holes. The dust on the sieve and the dust on the brush can be removed by the high-pressure gas. Preferably, the lifting driver 9-2 adopts an air cylinder, the rotating driver 9-5 adopts a motor, and the motor is provided with a speed reducer and a frequency converter to adjust the speed.

In the full-automatic powder sample preparation system of the present invention, a plurality of automatic cleaning mechanisms 9 may be provided for automatically cleaning the primary screen 2-4, the sample tank 10, the secondary screen 5-5, and the blanking valve 7, respectively. The cleaning mechanism 9 is fixedly or horizontally movably arranged on the bottom plate of the main frame, and the volumes are automatically cleaned in a single or shared mode.

Referring to fig. 15, the operation of the fully automatic powder sample preparation system of the present invention is specifically described below, with the following specific operation steps.

(1) The primary screen cover is opened, and the conveying manipulator conveys the sample tank to the position below the primary screen; pouring the sample into a primary screen, and closing a primary screen cover; the primary screening motor drives the primary screening connecting plate to horizontally shake, so that primary screening operation is completed. And removing impurities such as stones, rhizomes and the like in the sample through a primary screening procedure.

(2) The conveying manipulator conveys the sample tank to the lower part of the grinding and drying mechanism, the sample tank is placed on the grinding table, the grinding cover plate moves downwards to cover the sample tank, and grinding operation is performed; whether the heating mechanism is started or not is selected according to the dry and wet state of the sample.

(3) And (3) when the step (2) is operated, the primary screen is turned over to move 180 degrees, the oversize products which do not pass through the primary screen are poured into a waste box, the primary screen cleaning mechanism cleans the primary screen, and after the primary screen cleaning mechanism is cleaned, the primary screen and the primary screen cleaning mechanism are reset.

(4) After the step (2) is finished, the grinding cover plate moves upwards, and the grinding knife is separated from the sample tank; the conveying manipulator picks up the sample tank and conveys the sample tank to the secondary screening mechanism.

(5) After the sample tank is placed on the screening sliding table, the lifting cylinder drives the screening sliding table to move upwards, so that the opening end of the sample tank is in butt joint with the secondary screen; then, the secondary screen rotary driver drives the rotary base plate to rotate 180 degrees, and then the secondary screen motor drives the secondary screen to carry out screening operation, and qualified samples are screened out through the screen mesh of the secondary screen.

(6) The blanking manipulator conveys the blanking valve to the lower part of the secondary screening mechanism, and the receiving hopper of the secondary screening mechanism discharges materials to the receiving opening of the blanking valve; and the blanking manipulator conveys the blanking valve to the upper part of the sample sub-packaging table for sub-packaging.

(7) While the step (6) is running, the transporting manipulator transports the sample tank to the cleaning mechanism, and the sample tank is reset to the lower part of the primary screening mechanism after cleaning; and pouring the oversize material of the secondary sieve into a waste box, and cleaning the secondary sieve.

(8) And (3) after the step (6) is finished, resetting the blanking valve, and cleaning by high-pressure gas.

According to whether the sample is dried, the equipment man-machine interaction workflow and the equipment working efficiency are different. When the sample is not dried, a drying time of about 40 minutes is required, a sample preparation time of 5 minutes; when the sample has been dried, no drying time is required, only 5 minutes of sample preparation time. One procedure can prepare 1-3kg of powder samples.

It is specifically noted that the disclosed system for preparing powder samples involving fully automatic powder is specifically described with reference to examples, which are intended to be illustrative rather than limiting. All changes and modifications that come within the scope of the invention are desired to be protected without departing from the spirit and scope of the invention.

Claims (2)

1. The full-automatic powder sample preparation system is characterized by comprising a main frame, a sample tank, a primary screening mechanism, a conveying manipulator, a grinding and drying mechanism, a secondary screening mechanism, a split charging mechanism and a cleaning mechanism, wherein the primary screening mechanism, the grinding and drying mechanism and the secondary screening mechanism share one sample tank, and the conveying manipulator conveys the sample tank to perform primary screening, grinding and drying and secondary screening procedures respectively;

the primary screening mechanism comprises a base connecting plate, a primary screening rotary cylinder, a primary screening cover, a screening cover switch cylinder and a primary screening motor;

the base connecting plate is fixedly connected with the main frame, the primary screening connecting plate is movably connected with the base connecting plate through a horizontal guide rail, the primary screening rotating cylinder is connected with the primary screening connecting plate and the primary screening, the primary screening cover is driven by the screening cover switch cylinder, the primary screening motor is fixed on the base connecting plate and is connected with the primary screening connecting plate through a connecting rod mechanism, and the primary screening connecting plate can be driven to horizontally shake through the primary screening motor, so that the primary screening is driven to perform screening operation;

the conveying manipulator comprises a conveying connecting plate, a conveying substrate, a conveying horizontal walking motor, a conveying up-and-down motion motor, a conveying rotary motion motor, a hand grabbing sliding table, a hand grabbing cylinder and clamping jaws;

the conveying connecting plate is in sliding connection with the main frame through a horizontal guide rail, a conveying horizontal traveling motor is fixed on the conveying connecting plate, and the conveying connecting plate is driven by a horizontal screw rod to horizontally move along the horizontal guide rail;

the conveying base plate is fixedly connected with the conveying connecting plate, the conveying up-and-down movement motor is fixed on the conveying base plate, a vertical guide rail is arranged on the conveying base plate, the manual sliding table is movably connected with the vertical guide rail, and the conveying up-and-down movement motor drives the manual sliding table to move up and down along a vertical rail through a vertical lead screw;

the conveying rotary motion motor is arranged on the hand-grabbing sliding table, the hand-grabbing air cylinder is arranged on an output shaft of the rotary motion motor, the hand-grabbing air cylinder is connected with the clamping jaw, and the clamping jaw is used for clamping the sample tank;

the grinding and drying mechanism comprises a grinding swing driver, a grinding substrate, a grinding rotary motor, a grinding cover plate, a grinding knife and a cover plate driver;

the grinding swing driver is fixed on the main frame, the grinding substrate is connected with the grinding swing driver, the grinding cover plate is movably connected with the grinding substrate through a vertical guide rail, and the grinding cover plate moves up and down along the vertical guide rail through the driving of the cover plate driver;

the grinding rotary motor is fixed on the grinding cover plate, an output shaft of the grinding rotary motor downwards passes through the grinding cover plate, a grinding knife is arranged on the output shaft, and a grinding base plate is provided with a grinding table which extends outwards and is used for receiving the sample tank;

the grinding table is provided with a heating mechanism which can heat the sample tank, and the grinding cover plate is in sealing connection with the sample tank during working;

when the grinding rotary motor drives the grinding knife to grind the sample in the sample tank, the grinding swing driver can drive the grinding substrate to swing and rotate by plus or minus 45 degrees, so that the sample flows in the sample tank;

the secondary screening mechanism comprises a secondary screen, a secondary screen rotary driver, a rotary base plate, a lifting cylinder, a screening sliding table, a switching valve cylinder and a secondary screen motor;

the secondary screen rotary driver is fixedly arranged on the main frame, and the rotary base plate is connected with the secondary screen rotary driver; the screening sliding table is movably connected with the rotary base plate through a guide rail and is driven by a lifting cylinder; the secondary screen motor is fixedly arranged on the rotary base plate, the secondary screen motor is connected with the secondary screen through a connecting rod mechanism, and the secondary screen is in sliding connection with the rotary base plate through a secondary screen horizontal guide rail; a discharge hole of the secondary sieve is provided with a switch valve which is driven to open and close by a switch valve cylinder;

in an initial state, the secondary sieve and the receiving hopper are reversely buckled above the sieving sliding table, and when a sample tank containing a sample is placed on the sieving sliding table, the lifting cylinder drives the sieving sliding table to move upwards, so that the opening end of the sample tank is in butt joint with the secondary sieve; then, the secondary screen rotary driver drives the rotary base plate to rotate 180 degrees, and then the secondary screen motor drives the secondary screen to perform screening operation;

the sub-packaging mechanism comprises a blanking manipulator, a blanking valve and a sample sub-packaging table;

the blanking manipulator comprises a blanking connecting plate, a blanking substrate, a blanking horizontal traveling motor, a blanking up-and-down motion motor, a lifting slide plate and a valve body mounting plate;

the blanking connecting plate is in sliding connection with the main frame through a horizontal guide rail, a blanking horizontal traveling motor is fixed on the blanking connecting plate, and the blanking connecting plate is driven by a horizontal screw rod to horizontally move along the horizontal guide rail;

the blanking substrate is fixedly connected with the blanking connecting plate, the blanking up-and-down motion motor is fixed on the blanking substrate, a vertical guide rail is arranged on the blanking substrate, the lifting slide plate is movably connected with the vertical guide rail, and the blanking conveying up-and-down motion motor drives the lifting slide plate to move up and down along a vertical rail through a vertical lead screw;

the valve body mounting plate is fixed on the lifting slide plate, and the blanking valve is fixed on the valve body mounting plate;

the sample split charging platform comprises a split charging base plate, a weighing sensor, a material bottle mounting plate and a material bottle; the split charging base plate is fixedly connected with the main frame, the weighing sensor is arranged on the split charging base plate, the material bottle mounting plate is arranged on the weighing sensor, and the material bottle is arranged on the material bottle mounting plate;

the cleaning mechanism comprises a cleaning mounting substrate, a cleaning up-down motion cylinder, a cleaning lifting table, a hairbrush and a cleaning rotary driver, wherein the cleaning mounting substrate is fixed on the main frame; the cleaning lifting table is arranged on the cleaning installation substrate through a vertical guide rail and is driven by a cleaning up-and-down motion cylinder; the brush is fixed on the output shaft of the cleaning rotary driver.

2. A fully automatic powder sample preparation method, which is characterized by adopting the fully automatic powder sample preparation system as claimed in claim 1, comprising the following steps:

(1) The primary screen cover is opened, and the conveying manipulator conveys the sample tank to the position below the primary screen; pouring the sample into a primary screen, and closing a primary screen cover; the primary screening motor drives the primary screening connecting plate to horizontally shake so as to finish primary screening operation;

(2) The conveying manipulator conveys the sample tank to the lower part of the grinding and drying mechanism, the sample tank is placed on the grinding table, the grinding cover plate moves downwards to cover the sample tank, and grinding operation is performed; according to the dry and wet state of the sample, selecting whether to start the heating mechanism;

(3) The primary screen is turned over for 180 degrees while the step (2) is operated, the oversize products which do not pass through the primary screen are poured into a waste box, a primary screen cleaning mechanism is used for cleaning the primary screen, and after the primary screen cleaning mechanism is used for cleaning, the primary screen and the primary screen cleaning mechanism are reset;

(4) After the step (2) is finished, the grinding cover plate moves upwards, and the grinding knife is separated from the sample tank; the conveying manipulator picks up the sample tank and conveys the sample tank to the secondary screening mechanism;

(5) After the sample tank is placed on the screening sliding table, the lifting cylinder drives the screening sliding table to move upwards, so that the opening end of the sample tank is in butt joint with the secondary screen; then, the secondary screen rotary driver drives the rotary substrate to rotate 180 degrees, then the secondary screen is driven by the secondary screen motor to carry out screening operation, and qualified samples are screened out through the screen mesh of the secondary screen;

(6) The blanking manipulator conveys the blanking valve to the lower part of the secondary screening mechanism, and the receiving hopper of the secondary screening mechanism discharges materials to the receiving opening of the blanking valve; the blanking manipulator conveys the blanking valve to the position above the sample sub-packaging table for sub-packaging;

(7) While the step (6) is running, the transporting manipulator transports the sample tank to the cleaning mechanism, and the sample tank is reset to the lower part of the primary screening mechanism after cleaning; pouring the oversize material of the secondary sieve into a waste box, and cleaning the secondary sieve;

(8) And (3) after the step (6) is finished, resetting the blanking valve, and cleaning by high-pressure gas.