CN117960697B - A portable dust collector for dust-free workshop - Google Patents
A portable dust collector for dust-free workshop Download PDFInfo
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Abstract
The invention relates to the technical field of workshop dust removal, in particular to a movable dust removal device for a dust-free workshop, which comprises the following components: a body; the dust collection module is connected with the body and used for collecting dust in a dust-free workshop; the mobile module is connected with the body and used for adjusting the dust removing position; the control module is respectively connected with the body, the dust collection module and the moving module, and is used for determining a corresponding working mode of the lifting assembly according to the average difference of dust concentration before and after dust removal, or determining a corresponding working mode of the moving module according to the average difference of dust concentration before and after dust removal and the variation of air inlet flow of the air inlet pipeline, and determining a first corresponding working mode of the moving module according to the variation of air inlet flow of the air inlet pipeline and the average pressure of the air inlet pipeline. The invention realizes the improvement of the dust removal accuracy and stability.
Description
Technical Field
The invention relates to the technical field of workshop dust removal, in particular to a movable dust removal device for a dust-free workshop.
Background
In the prior art, workshops are units for manufacturing products for completing certain procedures or manufacturing models by enterprises, and when the workshops perform production activities, some dust is often generated, and because the dust generating position is usually not in one place, the dust removing device is required to change the position to remove dust, so that a movable dust removing device is required.
Chinese patent publication No.: CN113828609a discloses a three-dimensional dust removing and cleaning system for an out-sales green tea workshop, which comprises a high-altitude dust discharging system for absorbing dust impurities suspended in the air, a ground cleaning dust remover for cleaning the ground and a mobile dust collector for cleaning the dust and dirt remained on the equipment; the high-altitude dust exhaust system comprises a closed workshop, a group of mixed flow fans arranged on a workshop wall body and an air inlet arranged at the top of the workshop, wherein the mixed flow fans are connected with a dust exhaust pipeline, the dust exhaust pipeline is connected with a first suction fan, and the first suction fan is connected with a dust collection bag; the ground cleaning dust remover comprises a motor sweeper, a second suction fan is arranged on the motor sweeper, a sundry collecting barrel is connected to the second suction fan through a pipeline, two cleaning rollers are arranged side by side below the motor sweeper, a hairbrush is arranged on each cleaning roller, a dust collection cavity is arranged behind the cleaning roller, and a dust collection pipe is arranged between the dust collection cavity and the second suction fan. Therefore, the three-dimensional dust removal and cleaning system for the marketing green tea workshop has the problems that in the dust absorption process, the distance between the dust hood and an absorbed area is too short, dust flies out and dust hood materials are aged due to air flow, part of hood materials volatilize, the dust hood is bent, and the dust hood is reduced in dust absorption range, so that the dust removal accuracy and stability are reduced.
Disclosure of Invention
Therefore, the invention provides a movable dust removing device for a dust-free workshop, which is used for solving the problems that in the prior art, the dust flies out and the dust-absorbing cover material is aged due to the fact that the distance between the dust-absorbing cover and the absorbed area is too short, and the dust-absorbing cover is bent due to the fact that part of cover material volatilizes, so that the dust-absorbing range is reduced, and the dust-removing accuracy and stability are reduced.
In order to achieve the above object, the present invention provides a mobile dust removing apparatus for a dust-free workshop, comprising: a body; the dust collection module is connected with the body and used for collecting dust in a dust-free workshop, and comprises an air inlet assembly connected with the body and used for conveying the dust and a lifting assembly connected with the air inlet assembly and used for adjusting the length of an air inlet pipeline, wherein the lifting assembly comprises a connecting rod connected with the air inlet pipeline through a clamp and used for driving the air inlet pipeline to stretch out and draw back; the air inlet pipeline is connected with the body and used for conveying dust to the corresponding filtering position; the mobile module is connected with the body and used for adjusting the dust removing position and comprises a mobile motor for providing mobile power for the body; the control module is respectively connected with the body, the dust collection module and the moving module, and is used for determining a corresponding working mode of the lifting assembly according to the average difference of dust concentration before and after dust removal, or determining a corresponding working mode of the moving module according to the average difference of dust concentration before and after dust removal and the variation of the air inlet flow of the air inlet pipeline, determining a first corresponding working mode of the moving module according to the variation of the air inlet flow of the air inlet pipeline and the average pressure of the air inlet pipeline, and determining a second corresponding working mode of the moving module according to the variance of dust removal duration in a plurality of operation periods; the rotating speed of the mobile motor in the first corresponding working mode of the mobile module is smaller than that of the mobile motor in the second corresponding working mode.
Further, the air intake assembly further comprises:
the fan is connected with the air inlet pipeline and used for providing dust collection power;
the dust hood is connected with the air inlet pipeline and is used for collecting dust in a dust-free workshop;
the dust concentration sensor is connected with the body and used for detecting the dust concentration in a dust-free workshop;
An air flow sensor connected to an inner wall of the intake duct for detecting an intake air flow in the intake duct;
and the pressure sensors are connected with the outer wall of the air inlet pipeline and are used for detecting the pressure of the air inlet pipeline.
Further, the control module obtains dust concentration before and after dust removal in a plurality of times of workshop dust removal processes, calculates average difference of the dust concentration before and after dust removal,
And if the average difference of the dust concentration before and after dust removal is greater than the preset second difference, the control module controls the lifting assembly to adjust the telescopic length of the dust hood in the corresponding working mode.
Further, the corresponding working mode is that the lifting assembly adjusts the telescopic length of the dust hood according to the corresponding telescopic length, and the corresponding telescopic length is determined by the difference value between the average difference value of the dust concentration before and after dust removal and the preset second difference value.
Further, if the average difference of the dust concentration before and after the dust removal is greater than the preset first difference and less than or equal to the preset second difference, the control module obtains the air inlet flow of the air inlet pipeline and calculates the variation of the air inlet flow of the air inlet pipeline,
And if the variation of the air inlet flow of the air inlet pipeline is larger than the preset first variation and smaller than or equal to the preset second variation, the control module controls the moving module to adjust the unit moving distance of the dust hood in the corresponding operation mode.
Further, the corresponding operation mode is that the moving module adjusts the unit moving distance of the dust hood according to the corresponding distance, and the corresponding distance is determined by the difference value between the variation of the air inlet flow of the air inlet pipeline and the preset first variation.
Further, if the variation of the intake air flow of the intake air pipe is greater than the preset second variation, the control module obtains the average pressure of a plurality of sampling points of the intake air pipe, calculates the average pressure of the intake air pipe,
And if the average pressure of the air inlet pipeline is greater than the preset pressure, the control module controls the moving module to control the body to move in a first corresponding working mode.
Further, the first corresponding working mode is that the moving module controls the body to move at a first corresponding rotating speed, and the first corresponding rotating speed is determined by the difference value between the average pressure of the air inlet pipeline and the preset pressure.
Further, when the moving module finishes moving the body at the first corresponding rotating speed, the control module obtains the time length for dust removal in a plurality of operation periods, calculates the variance of the dust removal time length in a plurality of operation periods,
And if the variance of the dust removing time length in the operation periods is larger than the preset variance, the control module controls the moving module to control the body to move in the second corresponding working mode.
Further, the second corresponding working mode is that the moving module controls the body to move at a second corresponding rotating speed, and the second corresponding rotating speed is determined by the difference value between the variance of the dust removing time length in a plurality of operation periods and the preset variance.
Compared with the prior art, the device has the beneficial effects that the device has the advantages that the telescopic length of the dust hood is adjusted according to the average difference of dust concentration before and after dust removal through the body, the dust collection module, the moving module and the control module, the influence of dust removal stability reduction caused by dust flying out of the dust hood due to the too close distance between the dust hood and an absorbed area in the dust absorption process is reduced, the unit moving distance of the dust hood is adjusted according to the change of the air inlet flow of the air inlet pipeline, the influence of dust removal accuracy reduction caused by dust collection efficiency reduction caused by ageing of a part of hood material is reduced, the dust hood is bent, the influence of dust removal accuracy reduction caused by reducing the dust collection range is reduced by adjusting the rotating speed of the moving motor according to the average pressure of the air inlet pipeline, the influence of dust collection stability reduction caused by enlarging the mouth of the pipe wall due to the expansion of the pipeline is reduced, the influence of secondary adjustment of the rotating speed of the moving motor according to the variance of the dust removal time length in a plurality of operation periods is reduced, the influence of dust removal accuracy reduction caused by the rotating speed reduction caused by the moving motor, and the dust removal accuracy reduction caused by the dust removal efficiency reduction is improved, and the dust removal accuracy is improved.
Furthermore, the device adjusts the telescopic length of the dust hood by setting the difference value between the average difference value of the dust concentration before and after dust removal and the preset second difference value, so that the influence of dust removal stability reduction caused by dust flying out due to air flow in the dust absorption process due to too close distance between the dust hood and an absorbed area is reduced, and the improvement of dust removal accuracy and stability is further realized.
Furthermore, the device adjusts the unit moving distance of the dust hood by setting the difference value between the variable quantity of the air inlet flow of the air inlet pipeline and the preset first variable quantity, so that the influence of reduced dust collection accuracy caused by the reduction of the dust collection range due to bending of the dust hood caused by ageing of the dust hood material and volatilization of part of the hood material is reduced, and the improvement of dust collection accuracy and stability is further realized.
Furthermore, the device adjusts the rotating speed of the mobile motor by setting the difference value between the average pressure of the air inlet pipeline and the preset pressure, reduces the influence of the reduction of the dust collection stability caused by the aggravation of dust accumulation due to the enlargement of the mouth of the pipeline due to the expansion of the pipeline caused by the temperature rise, and further realizes the improvement of the dust collection precision and stability.
Furthermore, the device of the invention carries out secondary adjustment on the rotating speed of the mobile motor by setting the difference value between the variance of the dust removal duration and the preset variance in a plurality of operation periods, thereby reducing the influence of reduced accuracy of dust removal caused by reduced dust removal efficiency due to reduced rotating speed of the mobile motor and further realizing the improvement of the accuracy and stability of dust removal.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a mobile dust collector for a dust-free workshop according to an embodiment of the present invention;
FIG. 2 is a block diagram showing the overall structure of a mobile dust collector for a dust-free workshop according to an embodiment of the present invention;
FIG. 3 is a block diagram showing a dust collection module of a mobile dust collector for a dust-free workshop according to an embodiment of the present invention;
FIG. 4 is a block diagram showing a mobile module of the mobile dust collector for a dust-free shop according to an embodiment of the present invention;
the reference numerals are as follows: the dust collection device comprises a dust collection cover 1, a clamp 2, a guide rail 3, a guide rail motor 4, a pressure sensor 5, an air flow sensor 6, an air inlet pipeline 7, a dust concentration sensor 8, a fan 9, a filter 10, a body 11, a dust storage tank 12, a mobile motor 13, a universal wheel 14, a sliding block 15 and a connecting rod 16.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
It should be noted that, the data in this embodiment are obtained by the mobile dust-removing device for dust-free workshops according to the historical data and the data statistics and test experiments in the corresponding dust-removing process before the detection, and according to the comprehensive analysis of the experimental results; the invention relates to a mobile dust removing device for a dust-free workshop, which integrates the average difference of dust concentration before and after the dust removal of 1496 cases, which are counted, detected and calculated in 86 days, the variation of the air inlet flow of an air inlet pipeline, the average pressure of the air inlet pipeline and the variance of dust removing duration in a plurality of operation periods before the current detection, and comprehensively determines the numerical value of each preset parameter standard of the mobile dust removing device for the dust-free workshop. It can be understood by those skilled in the art that the determination method of the mobile dust removal device for a dust-free workshop according to the present invention for the single parameter may be to select the value with the highest duty ratio as the preset standard parameter according to the data distribution, as long as the device according to the present invention can clearly define different specific conditions in the single item determination process through the obtained value.
Fig. 1, fig. 2, fig. 3, and fig. 4 show an overall schematic diagram, an overall block diagram, a specific block diagram of a dust collection module, and a specific block diagram of a mobile module of a mobile dust collection device for a dust-free workshop according to an embodiment of the invention. The invention relates to a mobile dust removal device for a dust-free workshop, which comprises:
a body 11;
The dust collection module is connected with the body 11 and used for collecting dust in a dust-free workshop, and comprises an air inlet assembly connected with the body 11 and used for conveying the dust and a lifting assembly connected with the air inlet assembly and used for adjusting the length of the air inlet pipeline 7, wherein the lifting assembly comprises a connecting rod 16 connected with the air inlet pipeline 7 through a clamp 2 and used for driving the air inlet pipeline 7 to stretch out and draw back;
The air inlet pipeline 7 is connected with the body 11 and is used for conveying dust to the corresponding filtering position;
the moving module is connected with the body 11 and used for adjusting the dust removing position and comprises a moving motor 13 used for providing moving power for the body 11;
The control module is respectively connected with the body 11, the dust collection module and the moving module and is used for determining the corresponding working mode of the lifting assembly according to the average difference of the dust concentration before and after dust removal or determining the corresponding operation mode of the moving module according to the average difference of the dust concentration before and after dust removal and the variation of the air inlet flow of the air inlet pipeline 7,
Determining a first corresponding working mode of the mobile module according to the variation of the air inlet flow of the air inlet pipeline 7 and the average pressure of the air inlet pipeline 7, and determining a second corresponding working mode of the mobile module according to the variance of the dust removal duration in a plurality of operation periods;
the rotation speed of the mobile motor 13 in the first corresponding working mode of the mobile module is smaller than that of the mobile motor 13 in the second corresponding working mode.
Specifically, the variance of the dust removing duration in the operation periods is the variance of the duration used for completing dust removing in the operation periods, and the method for calculating the variance of the dust removing duration in the operation periods is a conventional technical means known to those skilled in the art, so that the calculation process of the variance of the dust removing duration in the operation periods is not described herein.
Specifically, the dust removal is completed when the dust concentration in the dust-free workshop is lower than 4mg/m 3.
Specifically, the calculation formula of the average difference in dust concentration before and after dust removal is:
Wherein Z is the average difference of dust concentration before and after dust removal, |X a-Ta | is the absolute value of the difference of the dust concentration after the a-th dust removal and the dust concentration before the a-th dust removal, n is the number of times of workshop dust removal, and n is a natural number greater than or equal to 1.
In particular, the plant has several target dust detection points.
Specifically, the calculation formula of the amount of change in the intake air flow rate of the intake duct 7 is:
Where F is the amount of change in the intake air flow rate of the intake duct 7, E1 is the intake air flow rate of the intake duct 7 at the initial time in unit time, and E2 is the intake air flow rate of the intake duct 7 at the end time in unit time.
Specifically, the calculation formula of the average pressure of the intake duct 7 is:
Wherein K is the average pressure of the air intake duct 7, S d is the pressure of the d-th sampling point of the air intake duct 7, c is the number of sampling points of the air intake duct 7, and c is a natural number equal to or greater than 1.
Specifically, the mobile dust collector for dust-free workshops further includes:
a filter 10 provided inside the body 11 for filtering dust;
A dust storage tank 12 disposed below the filter 10 for storing dust.
Specifically, the filter 10 may be a primary filter, a high efficiency filter, or a HEPA filter.
Specifically, the lifting assembly further comprises:
the sliding block 15 is connected with the connecting rod 16 and is used for driving the connecting rod 16 to move in the vertical direction;
a guide rail 3 connected to the slider 15 for defining a moving track of the slider 15;
And a guide rail motor 4 connected with the guide rail 3 for providing power for the sliding block 15 to move along the guide rail 3.
Specifically, the moving module further includes a universal wheel 14 connected to the moving motor 13 to change the moving direction of the body 11.
Specifically, the air inlet pipe 7 is made of flexible material, which may be rubber, polyurethane or polyvinyl chloride.
According to the device, the body 11, the dust collection module, the moving module and the control module are arranged, the telescopic length of the dust collection cover 1 is adjusted according to the average difference of dust concentration before and after dust collection, the influence of dust collection stability reduction caused by dust flying out due to the fact that the distance between the dust collection cover 1 and an absorbed area is too short in the dust absorption process is reduced, the unit moving distance of the dust collection cover 1 is adjusted according to the change of the air inlet flow of the air inlet pipeline 7, the influence of dust collection accuracy reduction caused by the fact that part of cover materials volatilize due to ageing of the material of the dust collection cover 1, the dust collection cover 1 is bent, the influence of dust collection accuracy reduction caused by the fact that the dust collection range is reduced, the influence of dust collection stability reduction caused by dust collection due to the fact that the pipe wall opening is enlarged due to temperature rising is reduced, the influence of dust collection stability reduction caused by the fact that the rotating speed of the moving motor 13 is adjusted secondarily according to the variance of dust collection time length in a plurality of operation periods is reduced, and the influence of dust collection accuracy reduction caused by the fact that the rotating speed of the moving motor 13 is reduced due to the fact that the rotating speed of the dust collection efficiency is reduced.
With continued reference to fig. 1, the air intake assembly further includes:
a fan 9 connected with the air inlet pipeline 7 for providing dust collection power;
a dust hood 1 connected to the air intake duct 7 for collecting dust in a dust-free workshop;
A dust concentration sensor 8 connected to the body 11 for detecting the dust concentration in the dust-free shop;
An air flow sensor 6 connected to an inner wall of the intake pipe 7 for detecting an intake air flow rate in the intake pipe 7;
And a plurality of pressure sensors 5 connected to the outer wall of the air inlet pipe 7 for detecting the pressure of the air inlet pipe 7.
Specifically, the principle of the dust concentration sensor 8 detecting the dust concentration in the dust-free workshop is as follows: the dust concentration sensor 8 emits light into the air, and detects the dust concentration by the intensity of the light reflected by the captured dust particles.
Specifically, the principle of the air flow sensor 6 detecting the intake air flow rate of the intake duct 7 is: the thermal film in the air flow sensor 6 is heated for a period of time to keep a certain temperature higher than the ambient temperature, and when the air flows through the thermal film, heat is taken away, the temperature of the film is reduced, and the air inlet flow of the air inlet pipeline 7 is calculated by measuring the temperature change of the thermal film.
The control module obtains dust concentration before and after dust removal in a plurality of times of workshop dust removal processes, calculates average difference of the dust concentration before and after dust removal,
If the average difference of the dust concentration before and after the dust removal is larger than a preset first difference, the control module judges that the accuracy of the dust removal is lower than an allowable range;
if the average difference of the dust concentration before and after the dust removal is larger than the preset first difference and smaller than or equal to the preset second difference, the control module preliminarily judges that the comprehensiveness of the dust removal is lower than the allowable range, and secondarily judges the comprehensiveness of the dust removal according to the variation of the air inlet flow of the air inlet pipeline 7;
And if the average difference of the dust concentration before and after dust removal is greater than the preset second difference, the control module controls the lifting assembly to adjust the telescopic length of the dust hood 1 in the corresponding working mode.
Specifically, the average difference in dust concentration before and after dust removal is denoted as Q, the preset first difference is denoted as Q1, q1=4mg/m 3, the preset second difference is denoted as Q2, q2=5mg/m 3, the difference between the average difference in dust concentration before and after dust removal and the preset second difference is denoted as Δq, and Δq=q-Q2 is set.
According to the device, the preset first difference and the preset second difference are set to judge the accuracy of dust removal, so that the influence of the reduction of the stability of dust removal caused by inaccurate judgment of the accuracy of dust removal is reduced, and the improvement of the accuracy and the stability of dust removal is further realized.
The corresponding working mode is that the lifting assembly adjusts the telescopic length of the dust hood 1 according to the corresponding telescopic length, and the corresponding telescopic length is determined by the difference value between the average difference value of dust concentration before and after dust removal and the preset second difference value.
Specifically, the specific process of determining the corresponding telescopic length through the difference value between the average difference value of the dust concentration before and after dust removal and the preset second difference value is as follows:
The control module adjusts the telescopic length of the dust hood 1 to a first telescopic length by using a preset second telescopic length adjusting coefficient under the condition of a preset first difference value; the difference value condition of the preset first difference value is that the difference value of the average difference value of the dust concentration before and after dust removal and the preset second difference value is smaller than or equal to the difference value of the preset difference value;
The control module adjusts the telescopic length of the dust hood 1 to a second telescopic length by using a preset first telescopic length adjusting coefficient under the condition of presetting a second difference value; the difference value condition of the preset second difference value is that the difference value between the average difference value of dust concentration before and after dust removal and the preset second difference value is larger than the difference value of the preset difference value;
the preset first telescopic length adjusting coefficient is smaller than the preset second telescopic length adjusting coefficient.
Specifically, the corresponding telescoping length includes a first telescoping length and a second telescoping length.
Specifically, the preset difference is denoted as Δq0, Δq0=1 mg/m 3, the preset first telescopic length adjustment coefficient is denoted as α1, α1=0.8, the preset second telescopic length adjustment coefficient is denoted as α2, α2=0.9, the telescopic length of the dust hood 1 is denoted as V, wherein 0 < α1 < α2 <1, the corresponding telescopic length is denoted as V ', V' =v× (1+αi)/2, wherein αi is the preset i-th telescopic length adjustment coefficient, and i=1, 2.
According to the device, the telescopic length of the dust hood 1 is adjusted by setting the difference value between the average difference value of the dust concentration before and after dust removal and the preset second difference value, so that the influence of dust removal stability reduction caused by flying of dust due to too close distance between the dust hood 1 and an absorbed area in the dust absorption process is reduced, and the improvement of dust removal accuracy and stability is further realized.
If the average difference of the dust concentration before and after the dust removal is greater than the preset first difference and less than or equal to the preset second difference, the control module obtains the air inlet flow of the air inlet pipeline 7 and calculates the variation of the air inlet flow of the air inlet pipeline 7,
If the variation of the air inlet flow of the air inlet pipeline 7 is larger than the preset first variation, the control module secondarily judges that the comprehensiveness of dust removal is lower than the allowable range;
If the variation of the air inlet flow of the air inlet pipeline 7 is greater than the preset first variation and less than or equal to the preset second variation, the control module controls the moving module to adjust the unit moving distance of the dust hood 1 in the corresponding operation mode;
if the variation of the air inlet flow of the air inlet pipeline 7 is larger than the preset second variation, the control module preliminarily judges that the effectiveness of dust conveying is lower than the allowable range, and secondarily judges the effectiveness of dust conveying according to the average pressure of the air inlet pipeline 7.
Specifically, the preset first variation is denoted as P1, p1=2m 3/h, the preset second variation is denoted as P2, p2=3m 3/h, the variation of the intake air flow rate of the intake duct 7 is denoted as P, the difference between the variation of the intake air flow rate of the intake duct 7 and the preset first variation is denoted as Δp, and Δp=p-P1 is set.
According to the device, the preset first variable quantity and the preset second variable quantity are set, so that the comprehensive dust removal is subjected to secondary judgment, the influence of the reduction of the dust removal precision caused by the inaccuracy of the secondary judgment on the comprehensive dust removal is reduced, and the improvement of the dust removal precision and stability is further realized.
The corresponding operation mode is that the moving module adjusts the unit moving distance of the dust hood 1 according to the corresponding distance, and the corresponding distance is determined by the difference value between the variation of the air inlet flow of the air inlet pipeline 7 and the preset first variation.
Specifically, the specific process of determining the corresponding distance by the difference between the amount of change in the intake air flow rate of the intake duct 7 and the preset first amount of change is:
The control module adjusts the unit moving distance of the dust hood 1 to a first distance by using a preset second distance adjustment coefficient under the condition of a preset first variation difference value; the preset first variation difference condition is that the difference between the variation of the air inlet flow of the air inlet pipeline 7 and the preset first variation is smaller than or equal to the preset variation difference;
The control module adjusts the unit moving distance of the dust hood 1 to a second distance by using a preset first distance adjustment coefficient under the condition of a preset second variation difference value; the difference value condition of the preset second variation is that the difference value between the variation of the air inlet flow of the air inlet pipeline 7 and the preset first variation is larger than the difference value of the preset variation;
Wherein the preset first distance adjustment coefficient is smaller than the preset second distance adjustment coefficient.
Specifically, the corresponding distances include a first distance and a second distance.
Specifically, the preset variation difference is denoted as Δp0, Δp0=0.5m 3/H, the preset first distance adjustment coefficient is denoted as β1, β1=0.7, the preset second distance adjustment coefficient is denoted as β2, β2=0.8, the unit movement distance of the dust hood 1 is denoted as H, wherein 0 < β1 < β2 < 1, the corresponding distance is denoted as H ', H' =h× (1+2βj)/3, wherein βj is the preset j-th distance adjustment coefficient, and j=1, 2 are set.
According to the device, the unit moving distance of the dust hood 1 is adjusted by setting the difference value between the variation of the air inlet flow of the air inlet pipeline 7 and the preset first variation, so that the influence of reduced dust collection accuracy caused by the reduction of the dust collection range due to bending of the dust hood 1 caused by ageing of the material of the dust hood 1 and volatilization of part of the hood body material is reduced, and the improvement of dust collection accuracy and stability is further realized.
If the variation of the intake air flow of the intake air pipe 7 is greater than the preset second variation, the control module obtains the average pressure of a plurality of sampling points of the intake air pipe 7, calculates the average pressure of the intake air pipe 7,
If the average pressure of the air inlet pipeline 7 is greater than the preset pressure, the control module secondarily determines that the effectiveness of dust conveying is lower than the allowable range, and controls the moving module to control the body 11 to move in a first corresponding working mode.
Specifically, the preset pressure is denoted as Y0, y0=20pa, the average pressure of the intake duct 7 is denoted as Y, the difference between the average pressure of the intake duct 7 and the preset pressure is denoted as Δy, and Δy=y—y0 is set.
According to the device, the preset pressure is set to carry out secondary judgment on the effectiveness of dust conveying, so that the influence of the reduction of the stability of dust removal caused by the inaccurate secondary judgment on the effectiveness of dust conveying is reduced, and the improvement of the accuracy and the stability of dust removal is further realized.
The first corresponding working mode is that the moving module moves with the first corresponding rotating speed control body 11, and the first corresponding rotating speed is determined by the difference value between the average pressure and the preset pressure of the air inlet pipeline 7.
Specifically, the specific process of determining the first corresponding rotation speed by the difference between the average pressure of the intake pipe 7 and the preset pressure is:
The control module uses a preset second rotating speed adjusting coefficient to adjust the rotating speed of the mobile motor 13 to a first rotating speed under the condition of a preset first pressure difference value; the preset first pressure difference condition is that the difference between the average pressure of the air inlet pipeline 7 and the preset pressure is smaller than or equal to the preset pressure difference;
the control module adjusts the rotating speed of the mobile motor 13 to a second rotating speed by using a preset first rotating speed adjusting coefficient under the condition of a preset second pressure difference value; the preset second pressure difference condition is that the difference between the average pressure of the air inlet pipeline 7 and the preset pressure is larger than the preset pressure difference;
Wherein the preset first rotation speed adjustment coefficient is smaller than the preset second rotation speed adjustment coefficient.
Specifically, the first corresponding rotational speed includes a first rotational speed and a second rotational speed.
Specifically, the preset pressure difference is denoted as Δy0, Δy0=5 Pa, the preset first rotational speed adjustment coefficient is denoted as γ1, γ1=0.75, the preset second rotational speed adjustment coefficient is denoted as γ2, γ2=0.85, the rotational speed of the mobile motor 13 is denoted as L, wherein 0 < γ1 < γ2 < 1, the first corresponding rotational speed is denoted as L ', L' =lx (1+3γm)/4, wherein γm is the preset mth rotational speed adjustment coefficient, and m=1, 2.
According to the device, the rotating speed of the mobile motor 13 is regulated by setting the difference value between the average pressure of the air inlet pipeline 7 and the preset pressure, so that the influence of dust collection and aggravation caused by the enlargement of the mouth of the pipeline wall due to the expansion of the pipeline due to the temperature rise on the stability of dust collection is reduced, and the precision and the stability of dust collection are further improved.
When the movement module finishes the movement of the body 11 at the first corresponding rotation speed, the control module obtains the time length for dust removal in a plurality of operation periods, calculates the variance of the dust removal time length in the plurality of operation periods,
And if the variance of the dust removing time length in the operation periods is larger than the preset variance, the control module judges that the dust removing efficiency is lower than the allowable range and controls the moving module to control the body 11 to move in the second corresponding working mode.
Specifically, the preset variance is denoted as R0, r0=0.5h 2, the variance of the dust removal time period in a plurality of operation periods is denoted as R, the difference between the variance of the dust removal time period in a plurality of operation periods and the preset variance is denoted as Δr, and Δr=r-R0 is set.
According to the device, the dust removal efficiency is judged by setting the preset variance, so that the influence of the reduction of the dust removal accuracy caused by the inaccurate judgment of the dust removal efficiency is reduced, and the improvement of the dust removal accuracy and stability is further realized.
The second corresponding working mode is that the moving module controls the body 11 to move at a second corresponding rotating speed, and the second corresponding rotating speed is determined by the difference value between the variance of the dust removing time length in a plurality of operation periods and the preset variance.
Specifically, the specific process of determining the second corresponding rotating speed through the difference value between the variance of the dust removing duration and the preset variance in a plurality of operation periods is as follows:
The control module secondarily adjusts the rotating speed of the mobile motor 13 to a third rotating speed by using a preset third rotating speed secondary adjusting coefficient under the condition of presetting a first variance difference value; the preset first variance difference condition is that the variance of the dust removing time length in a plurality of operation periods is smaller than or equal to the preset variance difference;
The control module secondarily adjusts the rotating speed of the mobile motor 13 to a fourth rotating speed by using a preset fourth rotating speed secondary adjusting coefficient under the condition of presetting a second variance difference value; the preset second variance difference condition is that the difference between the variance of the dust removing time length in a plurality of operation periods and the preset variance is larger than the preset variance difference;
the preset third rotating speed secondary adjusting coefficient is smaller than the preset fourth rotating speed secondary adjusting coefficient.
Specifically, the second corresponding rotational speed includes a third rotational speed and a fourth rotational speed.
Specifically, the preset variance difference is denoted as Δr0, Δr0=0.1h 2, the preset third rotational speed secondary adjustment coefficient is denoted as γ3, γ3=1.2, the preset fourth rotational speed secondary adjustment coefficient is denoted as γ4, γ4=1.4, wherein 1 < γ3 < γ4, the second corresponding rotational speed is denoted as L ", L" =l' × (1+3γw)/4, wherein γw is the preset w-th rotational speed adjustment coefficient, and w=3, 4.
According to the device, the rotating speed of the mobile motor 13 is secondarily adjusted by setting the difference value between the variance of the dust removal duration in a plurality of operation periods and the preset variance, so that the influence of reduction in dust removal accuracy caused by reduction in dust removal efficiency due to reduction in the moving speed caused by overlow rotating speed of the mobile motor 13 is reduced, and the improvement of the dust removal accuracy and stability is further realized.
Example 1
In this embodiment 1, the mobile dust collector performs dust collection on a dust-free workshop, and the control module adjusts the telescopic length of the dust hood according to the difference between the average difference of the dust concentration before and after dust collection and the preset second difference, where the preset difference is denoted as Δq0, the preset first telescopic length adjustment coefficient is denoted as α1, the preset second telescopic length adjustment coefficient is denoted as α2, the telescopic length of the dust hood is denoted as V, where 0 < α1 < α2 < 1, α1=0.8, α2=0.9, Δq0=1 mg/m 3, and v=1.6 m.
In this embodiment 1, Δq=2mg/m 3 is obtained, and the control module determines Δq > - Δq0 and adjusts the telescopic length of the dust hood to the second telescopic length by using the preset first telescopic length adjustment coefficient, so as to calculate V' =1.6m× (1+0.8)/2=1.44 m.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (7)
1. A mobile dust collector for a dust-free shop, comprising:
A body;
The dust collection module is connected with the body and used for collecting dust in a dust-free workshop, and comprises an air inlet assembly connected with the body and used for conveying the dust and a lifting assembly connected with the air inlet assembly and used for adjusting the length of an air inlet pipeline, wherein the lifting assembly comprises a connecting rod connected with the air inlet pipeline through a clamp and used for driving the air inlet pipeline to stretch out and draw back;
the air inlet pipeline is connected with the body and used for conveying dust to the corresponding filtering position;
The mobile module is connected with the body and used for adjusting the dust removing position and comprises a mobile motor for providing mobile power for the body;
The control module is respectively connected with the body, the dust collection module and the moving module and is used for determining the corresponding working mode of the lifting assembly according to the average difference of the dust concentration before and after dust removal or determining the corresponding operation mode of the moving module according to the average difference of the dust concentration before and after dust removal and the variation of the air inlet flow of the air inlet pipeline,
Determining a first corresponding working mode of the mobile module according to the variation of the air inlet flow of the air inlet pipeline and the average pressure of the air inlet pipeline, and determining a second corresponding working mode of the mobile module according to the variance of the dust removal duration in a plurality of operation periods;
The rotating speed of the mobile motor in the first corresponding working mode of the mobile module is smaller than that of the mobile motor in the second corresponding working mode;
The air intake assembly further includes:
the fan is connected with the air inlet pipeline and used for providing dust collection power;
the dust hood is connected with the air inlet pipeline and is used for collecting dust in a dust-free workshop;
the dust concentration sensor is connected with the body and used for detecting the dust concentration in a dust-free workshop;
An air flow sensor connected to an inner wall of the intake duct for detecting an intake air flow in the intake duct;
the pressure sensors are connected with the outer wall of the air inlet pipeline and are used for detecting the pressure of the air inlet pipeline;
The control module obtains dust concentration before and after dust removal in a plurality of times of workshop dust removal processes, calculates average difference of the dust concentration before and after dust removal,
If the average difference of the dust concentration before and after dust removal is larger than a preset second difference, the control module controls the lifting assembly to adjust the telescopic length of the dust hood in the corresponding working mode;
the corresponding working mode is that the lifting component adjusts the telescopic length of the dust hood according to the corresponding telescopic length, and the corresponding telescopic length is determined by the difference value between the average difference value of dust concentration before and after dust removal and the preset second difference value.
2. The portable dust collector for dust-free workshops of claim 1, wherein if the average difference in dust concentration before and after dust collection is greater than a preset first difference and less than or equal to the preset second difference, the control module obtains the intake air flow of the intake air duct and calculates the variation in the intake air flow of the intake air duct,
And if the variation of the air inlet flow of the air inlet pipeline is larger than the preset first variation and smaller than or equal to the preset second variation, the control module controls the moving module to adjust the unit moving distance of the dust hood in the corresponding operation mode.
3. The mobile dust collector for dust-free workshops of claim 2, wherein the corresponding operation mode is that the moving module adjusts a unit moving distance of the dust hood by a corresponding distance determined by a difference between a variation of an intake air flow of the intake duct and a preset first variation.
4. The portable dust collector for dust-free workshops of claim 3, wherein if the amount of change in the intake air flow of the intake air duct is greater than the preset second amount of change, the control module obtains the average pressure of the plurality of sampling points of the intake air duct and calculates the average pressure of the intake air duct,
And if the average pressure of the air inlet pipeline is greater than the preset pressure, the control module controls the moving module to control the body to move in a first corresponding working mode.
5. The portable dust collector for a dust free shop according to claim 4, wherein the first corresponding operating mode is that the moving module moves the body at a first corresponding rotational speed determined by a difference between an average pressure of the air intake duct and a preset pressure.
6. The portable dust collector for dust-free workshops of claim 5, wherein the control module obtains a time period for dust collection completion in a plurality of operation cycles and calculates a variance of dust collection time periods in the plurality of operation cycles when the movement module completes the movement of the body at the first corresponding rotational speed,
And if the variance of the dust removing time length in the operation periods is larger than the preset variance, the control module controls the moving module to control the body to move in the second corresponding working mode.
7. The mobile dust collector for dust-free workshops of claim 6, wherein the second corresponding operation mode is that the moving module controls the body to move at a second corresponding rotation speed, and the second corresponding rotation speed is determined by a difference between a variance of dust-collecting time length in a plurality of operation periods and a preset variance.
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