CN220207348U

CN220207348U - Full-automatic detection device and system for fineness of coal dust moisture

Info

Publication number: CN220207348U
Application number: CN202321449048.1U
Authority: CN
Inventors: 李卫涛; 徐培; 高学卫
Original assignee: Shandong Sanmu Electromechanical Engineering Co ltd
Current assignee: Shandong Sanmu Electromechanical Engineering Co ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-12-19
Anticipated expiration: 2033-06-06

Abstract

The utility model discloses a full-automatic detection device and a full-automatic detection system for the fineness of pulverized coal moisture, which relate to the technical field of pulverized coal detection and comprise a manipulator, a spreading device, a drying weighing device and a screening weighing device, wherein the manipulator comprises a tray for receiving a sample, and the tray is connected with a triaxial movement mechanism through a turnover mechanism; the spreading device is used for spreading samples held by the tray; the drying weighing device comprises a drying box, and a first weighing sensor is arranged at the bottom of the drying box; the tray is placed in the drying box and used for drying and weighing the sample; the screening weighing device comprises a vibrating screen, and the tray is turned over to enable the dried and weighed sample to fall into the vibrating screen; one side of the vibrating screen is connected with the first pulverized coal recovery channel, the bottom of the vibrating screen is provided with a second weighing sensor, and the bottom of the vibrating screen is connected with the second pulverized coal recovery channel. According to the utility model, moisture and fineness detection can be performed through one-time sampling, loss in the sample transferring process can be avoided, and the measurement accuracy is improved; the whole structure is compact, and the space layout is reasonable.

Description

Full-automatic detection device and system for fineness of coal dust moisture

Technical Field

The utility model relates to the technical field of coal dust detection, in particular to a full-automatic coal dust moisture fineness detection device and system.

Background

The detection modes of coal dust moisture and fineness of the traditional coking plants are mostly manual detection, and the manual coal dust moisture detection steps are as follows: sampling, preparing samples, sending to inspection (laboratory), repeatedly drying and weighing (until the weight is not changed any more for the front and the back times), and filling in a coal dust moisture detection report; the artificial coal powder fineness detection steps are as follows: sampling, preparing samples, sending to inspection (laboratory), screening and filling in a coal dust fineness detection report. Manual detection mainly has the following disadvantages:

(1) The manual sampling can not realize full-section sampling, deviation exists in the manual sampling process, and the conditions of incomplete drying, incomplete screening and inaccurate weighing exist due to manual operation during drying, screening and weighing, so that the detection result is inaccurate;

(2) The time from sampling, sample preparation to detection report generation is generally 2 hours, and the efficiency is low; when the water content of the coal powder is problematic, the water content cannot be fed back in time; the water and fineness detection needs to be independently sampled, so that the working time is prolonged;

(3) The coal dust overflows in the processes of manual sampling, sample preparation, sample sending, detection and coal sample recovery, so that the surrounding local environment is slightly polluted, and the physical health of workers is affected.

In order to solve the problems of manual detection, some devices for automatically detecting moisture or fineness are presented, for example: CN105954143a discloses an automatic pulverized coal full-moisture measuring device, which comprises a turnover base component, a middle cavity component, an upper cover component, an upper blanking component and a lower Cheng Liao component, wherein the middle cavity component comprises a pressure weighing sensor group, a sensor connecting plate, an infrared lamp tube supporting disc, a material containing disc and a middle cavity bracket; the upper cover assembly comprises a flattening scraping claw, an upper cover, a temperature sensor, a feed inlet and a driving motor; the automatic feeding and discharging function is smoothly realized through the overturning structure and the design of the feeding and discharging port, the spreading scraping claw spreads the pulverized coal and continuously stirs the pulverized coal in the heating process, and the drying efficiency is improved. CN112284987a discloses a pulverized coal fineness measuring system, a sampling classifier separates pulverized coal collected in a cyclone separator by a concentration dispersing plate, so that the concentration of pulverized coal entering a measuring tank is reduced. The sampling classifier is used for sub-sampling the pulverized coal, classifying and diluting the pulverized coal, and measuring the pulverized coal with moderate concentration.

Although the scheme can realize automatic moisture or fineness detection, the moisture measuring device needs to be used for pouring materials back and forth in the measuring process, so that material loss can be caused, and the measuring precision is inaccurate; and the fineness detection can not be carried out any more due to material loss, so that the existing equipment has the problem that one detection can only be carried out by one sampling.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a full-automatic detection device and system for the fineness of the coal dust moisture, which can detect the moisture and the fineness by sampling once, avoid the loss in the sample transferring process and improve the measurement precision; the whole structure is compact, and the space layout is reasonable.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

in a first aspect, an embodiment of the present utility model provides a full-automatic pulverized coal moisture fineness detection device, including:

the manipulator comprises a tray for receiving samples, and the tray is connected with the triaxial movement mechanism through the turnover mechanism;

the spreading device is used for spreading samples carried by the tray uniformly;

the drying weighing device comprises a drying box, and a first weighing sensor is arranged at the bottom of the drying box; the tray is placed in the drying box and used for drying and weighing the sample;

the screening weighing device comprises a vibrating screen, and the tray is turned over to enable the dried and weighed sample to fall into the vibrating screen; one side of the vibrating screen is connected with the first pulverized coal recovery channel, the bottom of the vibrating screen is provided with a second weighing sensor, and the bottom of the vibrating screen is connected with the second pulverized coal recovery channel.

As a further implementation manner, the manipulator further comprises a support frame, and the triaxial movement mechanism is mounted on the support frame; and the spreading device, the drying weighing device and the drying weighing device are all positioned on the inner side of the supporting frame.

As a further implementation manner, the turnover mechanism comprises a turnover frame and a rotary driving part connected with the turnover frame, and an electromagnet is arranged between the tray and the turnover frame.

As a further implementation mode, the turnover frame is provided with a mounting groove for accommodating the electromagnet, the bottom surface of the tray is fixedly adsorbed with the turnover frame when the electromagnet is electrified, and the tray can be separated from the turnover frame when the electromagnet is powered off.

As a further implementation manner, the rotation driving part includes a horizontal rotation motor connected to the roll-over stand, or the horizontal rotation motor is connected to the roll-over stand through a first transmission shaft.

As a further implementation mode, the drying box is provided with a door, the bottom of the drying box is provided with a bracket, and the first weighing sensor is arranged between the bottom surface of the drying box and the top of the bracket;

the drying cabinet is inside to have the boss of accepting the tray.

As a further implementation manner, the communication port between the first pulverized coal recovery channel and the vibrating screen is positioned on the upper side of the screen plate of the vibrating screen, so that the screened large-particle sample enters the coal bin through the first pulverized coal recovery channel;

the second pulverized coal recovery channel is communicated with a discharge port of the vibrating screen, so that the small particle sample after screening is recovered to the coal bunker after weighing.

As a further implementation manner, the spreading device comprises a poking plate, and the poking plate is connected with a rotary driving mechanism.

As a further implementation manner, the rotary driving mechanism comprises a vertical rotary motor, and is vertically fixed on the support frame in a vertical rotation manner;

the vertical rotating motor is connected with the plectrum, or the vertical rotating motor is connected with the plectrum through a second transmission shaft.

In a second aspect, an embodiment of the utility model provides a full-automatic pulverized coal moisture fineness detection system, which comprises the detection device and further comprises a belt sampler, wherein the belt sampler is used for acquiring a sample and transferring the sample to a manipulator.

The beneficial effects of the utility model are as follows:

(1) The utility model comprises a manipulator, a spreading device, a drying weighing device and a screening weighing device, wherein the manipulator replaces manual work to realize sample transfer and improve measurement efficiency; meanwhile, the spreading device, the drying weighing device and the screening weighing device are sequentially arranged to ensure the connection of all the working procedures; the tray is used as a component for receiving the sample, so that material loss caused by back and forth material pouring can be avoided, and the measurement accuracy is improved.

(2) The tray is matched with the turnover frame through the electromagnet, and the fixation and detachment of the tray can be realized through the on-off of the electromagnet, so that the tray is conveniently placed in the drying oven, and the transportation requirement is met on the premise of small occupied space; meanwhile, the drying box is provided with a boss for supporting the tray, and the tray is supported to a certain height so as to be convenient for being separated from the roll-over stand; and the drying box is provided with an external weighing sensor, so that the influence of the measurement accuracy of the high Wen Duichuan sensor is avoided.

(3) The screening weighing device is provided with the first coal dust recycling channel and the second coal dust recycling channel, so that large particle samples and small particle samples for fineness detection are recycled.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a perspective view of a detection device according to one or more embodiments of the present utility model;

FIG. 2 is a second perspective view of a detection device according to one or more embodiments of the present utility model;

FIG. 3 is a schematic view of a robot structure according to one or more embodiments of the present utility model;

FIG. 4 is a schematic view of a tray and flipping mechanism installation in accordance with one or more embodiments of the utility model;

FIG. 5 is a schematic diagram of a tilting mechanism according to one or more embodiments of the utility model;

FIG. 6 is a schematic illustration of a spreading device according to one or more embodiments of the present utility model;

FIG. 7 is a schematic diagram of a dry weight apparatus in accordance with one or more embodiments of the present utility model;

FIG. 8 is a schematic diagram of a screen weighing apparatus according to one or more embodiments of the present utility model;

FIG. 9 is a schematic diagram of a detection system according to one or more embodiments of the present utility model.

Wherein, 1, a manipulator, 2, a spreading device, 3, a drying weighing device, 4, a screening weighing device, 5, a belt sampler, 6, a supporting frame, 7, a tray, 8, a triaxial movement mechanism, 9, a turnover mechanism, 10, a turnover frame, 11, a horizontal rotating motor, 12, a first transmission shaft, 13, an electromagnet, 14, a mounting groove, 15, a poking piece, 16, a vertical rotating motor, 17 and a supporting frame, 18, a second transmission shaft, 19, a connecting beam, 20, a drying box, 21, a first weighing sensor, 22, a bracket, 23, a door, 24, an opening and closing motor, 25, a vibrating screen, 26, a second weighing sensor, 27, a first coal dust recycling channel, 28, a second coal dust recycling channel, 29, an X-axis moving mechanism, 30, a Y-axis moving mechanism, 31, a Z-axis moving mechanism, 32, a boss, 33, a sieve plate, 34 and a motor base.

Detailed Description

Embodiment one:

in an exemplary embodiment of the present utility model, as shown in fig. 1 and 2, a full-automatic pulverized coal moisture fineness detection device is provided.

At present, the manual detection of the moisture and fineness of the pulverized coal has the problems of poor safety, poor precision, low efficiency, environmental pollution and the like, and the existing automatic detection equipment cannot detect the moisture and fineness by sampling once; meanwhile, the problem that the measurement accuracy is affected due to material loss caused by back and forth material pouring exists.

Based on the above, the embodiment provides a full-automatic coal dust moisture fineness detection device, which comprises a manipulator 1, a uniformly spreading device 2, a drying weighing device 3 and a screening weighing device 4, wherein the uniformly spreading device 2, the drying weighing device 3 and the screening weighing device 4 are sequentially arranged, after the manipulator 1 obtains a sample, the uniformly spreading device 2 spreads the sample, then the manipulator puts the sample into the drying weighing device 3, then dries and weighs the sample, and the weighed dried sample is transferred to the screening weighing device 4 by the manipulator 1; the screening weighing device 4 is provided with a coal dust recovery device, and samples screened by the screening weighing device 4 are recovered to a coal bunker according to different particle sizes. In the embodiment, the sample transfer of each procedure is realized through the manipulator 1, so that the full-automatic detection is realized.

The full-automatic coal dust moisture fineness detection device is described in detail below with reference to the accompanying drawings.

Considering the moving track and the compactness of the manipulator 1, the manipulator 1 structure is designed according to the embodiment, as shown in fig. 3, the manipulator 1 comprises a supporting frame 6 and a triaxial moving mechanism 8 mounted on the supporting frame 6, a tray 7 is used as a sample bearing component, the tray 7 receives a sample and then moves under the driving of the triaxial moving mechanism 8, the sample is homogenized by the homogenizing device 2, then the tray 7 is placed in the drying and weighing device 3, the sample is transferred along with the tray 7, the material loss caused by back and forth material pouring is reduced, and the measurement accuracy is improved.

The support frame 6 is a cuboid frame and consists of a plurality of upright posts and cross beams, and the spreading device 2, the drying weighing device 3 and the screening weighing device 4 are all arranged on the inner side of the support frame 6, so that the whole detection process is performed in a certain area, and the structure is compact.

In this embodiment, the tray 7 has a disc structure, and the disc-shaped tray 7 can ensure the stability of receiving and transferring samples.

The tray 7 is connected with the triaxial movement mechanism 8 through the turnover mechanism 8, and the turnover mechanism 8 can enable the tray 7 to turn over 360 degrees, so that dried samples fall into the screening weighing device 4. As shown in fig. 4 and 5, the turnover mechanism 8 includes a turnover frame 10 and a rotation driving part connected to the turnover frame 10, and can realize rotation of the turnover frame 10.

Because the diameter of the tray 7 is larger, the occupied space of the clamping type manipulator is larger, in order to effectively utilize the space, the mode that the tray 7 and the turnover frame 10 are adsorbed and fixed by the electromagnet 13 is adopted in the embodiment, and the mode is convenient for the separation of the tray 7 and the turnover frame 10, and only the electromagnet 13 is powered off, and the turnover mechanism 9 moves backwards. The on-off mode of the electromagnet 13 is the prior art, and will not be described here again.

Considering the stable fixation of the tray 7, the electromagnets 13 are uniformly distributed on the bottom surface of the tray 7, and the number of the electromagnets 13 can be three, four, five, etc.; in this embodiment, the roll-over stand 10 is provided in a U shape from the viewpoint of simple structure, and the U-shaped roll-over stand 10 can avoid interference with the boss 32 in the drying oven 20. The rotation driving part is connected to the closed end of the roll-over stand 10; the two projecting arms of the roll-over stand 10 are fitted with the same number of electromagnets 13.

In the present embodiment, two extension arms of the roll-over stand 10 are each provided with two electromagnets 13; of course, this number may be adjusted.

In order to further ensure the adsorption stability of the tray 7, the two extending arms of the roll-over stand 10 are correspondingly provided with the mounting groove 14, the electromagnet 13 is arranged in the mounting groove 14, and the top surface of the electromagnet 13 is flush with the top of the mounting groove 14, so that the bottom surface of the tray 7 is contacted with the roll-over stand 10 when being adsorbed to the electromagnet 13, the roll-over stand 10 plays a supporting role on the tray 7, and the support is more stable.

The rotation driving part may be a motor, a motor-matched transmission shaft, a motor-connected transmission mechanism, or the like, as long as the rotation driving part can realize 360 ° of the roll-over stand 10. In the present embodiment, the rotation driving part includes a horizontal rotation motor 11, the horizontal rotation motor 11 is connected to the roll-over stand 10 through a first transmission shaft 12, and the horizontal rotation motor 11 rotates to drive the first transmission shaft 12 and the roll-over stand 10 to rotate.

The horizontal rotary motor 11 is fixed on the motor base 34, and the first transmission shaft 12 is arranged on the motor base 34 through a bearing seat; the motor mount 34 is mounted on the underside of the triaxial movement mechanism 8.

The three-axis movement mechanism 8 includes an X-axis movement mechanism 29, a Y-axis movement mechanism 30, and a Z-axis movement mechanism 31, the tilting mechanism 9 is connected to the end of the Z-axis movement mechanism 31, and the Z-axis movement mechanism 31 is connected to the Y-axis movement mechanism 30 through the X-axis movement mechanism 29. In this embodiment, in order to ensure structural stability, two sets of Y-axis movement mechanisms 30 are provided and are both fixed to the top of the support frame 6, and an X-axis movement mechanism 29 is connected between the two sets of Y-axis movement mechanisms 30.

The X-axis movement mechanism 29, the Y-axis movement mechanism 30 and the Z-axis movement mechanism 31 all adopt linear movement modules, for example, a screw rod sliding rail mechanism, a gear rack linear guide rail mechanism and the like, and can be specifically selected according to practical requirements.

As shown in fig. 6, the spreading device 2 is fixed at a certain height on the inner side of the supporting frame 6, and comprises a poking plate 15 and a rotary driving mechanism, and the poking plate 15 is driven to rotate by the rotary driving mechanism to spread samples on the tray 7.

The rotary driving mechanism comprises a vertical rotary motor 16, and the vertical rotary motor 16 is directly connected with the plectrum 15 or is connected with the plectrum 15 through a second transmission shaft 18; because the motor shaft is short in length, in order to facilitate material homogenization, the embodiment adopts a mode that the vertical rotating motor 16 is connected with the poking plate 15 through the second transmission shaft 18.

The vertical rotating motor 16 is fixed on the top of the supporting frame 17, the supporting frame 17 can be arranged at will, for example, a rectangular frame is adopted, and the second transmission shaft 18 passes through the supporting frame 17 to be connected with the poking piece 15; the supporting frame 17 is fixedly connected with the supporting frame 6 through a connecting beam 19.

The stirring piece 15 only needs to meet the function of refining, in this embodiment, in order to adapt to the shape of the tray 7, the stirring piece 15 and the second transmission shaft 18 form a T-shaped structure, that is, the second transmission shaft 18 is connected to the middle position of the stirring piece 15; the stirring sheet 15 comprises two stirring plates inclined at a certain angle, and the inclined directions of the two stirring plates are opposite to form a dislocation structure, so that the refining effect is better.

As shown in fig. 7, the dry weighing device 3 includes a dry box 20 and a bracket 22, and the dry box 20 is fixed on the upper side of the bracket 22; the first weighing sensor 21 is fixed at the bottom of the drying oven 20 and is positioned between the drying oven 20 and the bracket 22, and the weighing is performed through the external first weighing sensor 21, so that the influence on the measuring precision of the sensor due to higher drying temperature is avoided.

A boss 32 is arranged in the drying box 20, when the tray 7 enters the drying box 20 under the drive of the triaxial movement mechanism 8, the electromagnet 13 is powered off, and the triaxial movement mechanism 8 drives the turnover mechanism 9 to move backwards, so that the tray 7 with the samples is placed in the drying box 20; the boss 32 functions to support the tray 7. The first weighing sensor 21 is matched with the drying box 20 to realize the detection of the moisture of the sample.

The drying box 20 is provided with a door 23, the door 23 is connected with the drying box 20 through a rotating shaft, the rotating shaft is connected with an opening and closing motor 20, and the opening and closing of the door 23 is controlled through the opening and closing motor 20. The horizontal rotary motor 11, the vertical rotary motor 15, and the opening and closing motor 24 of the present embodiment are all functionally named, and the motor structure is not limited; the motors in this embodiment are all servo motors.

In operation, the opening and closing motor 20 opens the door 23 of the drying box 20, the tray 7 is placed in the drying box 20 by the manipulator 1, and the door 23 is closed. The first weighing sensor 21 weighs and the electrical control system collects first weighing data. The drying oven 20 starts to heat and dry. And collecting weight data once when the coal sample is dried for 20min, and collecting weight data once every 3min, and stopping drying when the weight data collected in the front and back times is less than or equal to 1g so as to ensure that the coal sample is completely dried.

As shown in fig. 8, the screening and weighing device 4 includes a vibrating screen 25, and the vibrating screen 25 is of a conventional structure, and will not be described herein.

One side of the vibrating screen 25 is connected with a first pulverized coal recovery channel 27, and a communication port of the first pulverized coal recovery channel 27 and the vibrating screen 25 is positioned on the upper side of the screen plate 33; a second weighing sensor 26 is arranged at the bottom of the vibrating screen 25, and the bottom of the vibrating screen 25 is connected with a second pulverized coal recovery channel 28; through the vibration screening of the vibrating screen 25, the large-particle sample does not fall into the vibrating screen 25, but is recovered to the coal bunker from the first pulverized coal recovery channel 27 on the side surface; the small particle sample is recycled to the coal bunker through a second coal dust recycling channel 28 after passing through a second weighing sensor 26.

The first coal dust recovery channel 27 and the second coal dust recovery channel 28 form a coal dust recovery device.

When the screening weighing device 4 works, the mechanical arm 1 conveys the tray 7 to the center above the vibrating screen 25, the coal sample falls into the vibrating screen 25 through rotating the tray 7, and the vibrating screen 25 starts vibrating screening. And (3) recycling the large particles with the diameters larger than 3mm after screening to a coal bunker, and recycling the small particles with the diameters smaller than 3mm after screening to the coal bunker after weighing.

Embodiment two:

the embodiment provides a full-automatic pulverized coal moisture fineness detection system, as shown in fig. 9, including the detection device according to the first embodiment, further including a belt sampler 5, where the belt sampler 5 is used for sampling, and placing the obtained sample on a tray 7 of the manipulator 1. The belt sampler 5 is existing equipment, can realize single sampling of 1-1.5kg, has an adjustable sampling period of 0-1h, and can meet the requirement of sample detection.

The working process of the embodiment is as follows:

firstly, a belt sampler 5 samples and conveys the samples to a tray 7 on a manipulator 1 on a coal conveying belt, the manipulator 1 conveys the samples to a spreading device 2 through movement, and the samples after spreading are conveyed to a drying and weighing device 3 through the manipulator 1.

After the drying, the sample is conveyed to a screening and weighing device 4 by a manipulator 1. And returning the mechanical arm 1 to a zero position after screening and weighing are completed. The coal dust recovery device recovers the sample. And the electric control system controls the whole conveying action, detects, analyzes, dries and sieves weighing data, and finally outputs a detection report.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. Full-automatic detection device of buggy moisture fineness, characterized in that includes:

2. The full-automatic pulverized coal moisture fineness detection device according to claim 1, wherein the manipulator further comprises a support frame, and the triaxial movement mechanism is mounted on the support frame; and the spreading device, the drying weighing device and the drying weighing device are all positioned on the inner side of the supporting frame.

3. The full-automatic pulverized coal moisture fineness detection device according to claim 1 or 2, wherein the turnover mechanism comprises a turnover frame and a rotary driving part connected with the turnover frame, and an electromagnet is arranged between the tray and the turnover frame.

4. The full-automatic pulverized coal moisture fineness detection device according to claim 3, wherein the turnover frame is provided with a mounting groove for accommodating an electromagnet, the bottom surface of the tray is fixedly adsorbed to the turnover frame when the electromagnet is electrified, and the tray can be separated from the turnover frame when the electromagnet is powered off.

5. A full-automatic pulverized coal moisture fineness detection apparatus according to claim 3, wherein the rotation driving part comprises a horizontal rotation motor connected to the roll-over stand, or the horizontal rotation motor is connected to the roll-over stand through a first transmission shaft.

6. The full-automatic pulverized coal moisture fineness detection device according to claim 1 or 2, wherein the drying box is provided with a door, a bracket is arranged at the bottom of the drying box, and the first weighing sensor is arranged between the bottom surface of the drying box and the top of the bracket;

the drying cabinet is inside to have the boss of accepting the tray.

7. The full-automatic pulverized coal moisture fineness detection device according to claim 1 or 2, wherein the communication port between the first pulverized coal recovery channel and the vibrating screen is positioned on the upper side of the screen plate of the vibrating screen, so that the screened large-particle sample enters the coal bunker through the first pulverized coal recovery channel;

8. The full-automatic pulverized coal moisture fineness detection device according to claim 1 or 2, wherein the spreading device comprises a poking plate, and the poking plate is connected with a rotary driving mechanism.

9. The full-automatic pulverized coal moisture fineness detection device according to claim 8, wherein the rotary driving mechanism comprises a vertical rotary motor, and is vertically fixed on the support frame in a vertical rotary manner;

10. The full-automatic pulverized coal moisture fineness detection system is characterized by comprising the detection device according to claim 1 or 2, and further comprising a belt sampler, wherein the belt sampler is used for acquiring a sample and transferring the sample to a manipulator.