CN118327940B - Dragon cyclone filter screen vacuum pump system applied to paper towel folding machine - Google Patents

Abstract

The invention discloses a cyclone filter screen vacuum pump system applied to a paper towel folding machine, and relates to the field of vacuum pumps. The scheme is proposed now that it includes vacuum pump, dragon whirlwind edulcoration case and control system, and gas gets into the vacuum pump after the edulcoration of dragon whirlwind edulcoration case filtration, control system includes: the first data acquisition modules are provided with two data acquisition modules, are respectively fixed at the air inlet ends of the vacuum pump and the cyclone impurity removal box and are respectively used for acquiring an air pressure value I and an air pressure value II; the analysis module is used for calculating an air pressure difference value based on the air pressure value I and the air pressure value II, comparing the air pressure difference value with a preset air pressure difference value threshold value and judging whether an abnormal instruction is generated or not; and the second data acquisition module acquires a filter screen image if an abnormal instruction is generated. The monitoring accuracy of the working state of the vacuum pump is improved, the power of the vacuum pump can be adjusted timely according to the blocking condition of the filter screen, and the normal operation of the paper towel folding machine is ensured.

Description

Dragon cyclone filter screen vacuum pump system applied to paper towel folding machine

Technical Field

The invention relates to the field of vacuum pumps, in particular to a cyclone filter screen vacuum pump system applied to a paper towel folding machine.

Background

The vacuum pump is main matched equipment in the paper towel folding machine and is used for adsorbing paper towels, and as paper scraps or dust are arranged on the surfaces of the paper towels, the vacuum pump can be used in the paper towel folding machine for filtering at the air suction end of the vacuum pump;

conventional paper towel folding machines are designed for vacuum pump filtration systems, which mainly comprise a filter screen and a vacuum pump for sucking and filtering paper dust and dust generated during folding of paper towels, however, common technical drawbacks include:

the filter screen is often blocked by paper scraps, and needs to be cleaned regularly, so that manual cleaning is time-consuming and labor-consuming;

The working efficiency of the vacuum pump is affected by the blocking state of the filter screen, which may cause the reduction of the machine efficiency;

the lack of an effective monitoring and early warning system can not predict what working state the filter screen is in, and can cause machine shutdown accidentally;

for example, chinese patent publication No. CN111828362B discloses a vacuum pump comprising: a vacuum gauge for detecting the gas pressure of a gas flow path through which the gas sucked from the gas inlet flows to the gas outlet; and an estimating unit for estimating a state of a deposit deposited in the gas flow path based on the gas pressure detected by the vacuum gauge; the vacuum pump detects the gas pressure through the vacuum gauge to judge the state of the deposit deposited in the gas flow path, such as the state of the surface blockage of the filter screen, but the change of the gas pressure has various conditions, such as the pipe breakage and gas leakage between the filter screen and the gas inlet end of the vacuum pump, or the problem of the vacuum pump itself, so that the problem of false detection is easily caused by detecting the filter screen blockage or the working state of the vacuum pump only through the change of the gas pressure.

Disclosure of Invention

Therefore, the invention aims to provide a cyclone filter screen vacuum pump system applied to a paper towel folding machine, so as to realize multi-stage detection, improve the monitoring accuracy of the working state of the vacuum pump, and timely adjust the power of the vacuum pump according to the blocking condition of the filter screen, thereby ensuring the normal operation of the paper towel folding machine.

In order to achieve the above-mentioned technical object, the invention provides a paper towel folding machine Dragon whirlwind filter screen vacuum pump system of machine:

The cyclone impurity removing device comprises a vacuum pump, a cyclone impurity removing box and a control system, wherein gas enters the vacuum pump after being filtered and impurity-removed by the cyclone impurity removing box, and the control system comprises: the first data acquisition modules are provided with two data acquisition modules, are respectively fixed at the air inlet ends of the vacuum pump and the cyclone impurity removal box and are respectively used for acquiring an air pressure value I and an air pressure value II; the analysis module is used for calculating an air pressure difference value based on the air pressure value I and the air pressure value II, comparing the air pressure difference value with a preset air pressure difference value threshold value and judging whether an abnormal instruction is generated or not; the second data acquisition module is used for acquiring a filter screen image if an abnormal instruction is generated, carrying out gray level processing on the filter screen image, acquiring gray level values of i pixels and establishing an analysis set of the gray level values of the i pixels; the blockage identifying module calculates the average value of the analysis set, compares the average value with a preset average value threshold value, and judges whether to generate a blockage instruction or a maintenance instruction; and the power recognition module is used for inputting the air pressure difference value into the trained power recognition model and outputting a vacuumizing power value if a blockage instruction is generated, wherein the vacuumizing power value is used as an execution parameter of the current vacuum pump.

Preferably, a filter screen for filtering and removing impurities of gas is fixed in the cyclone impurity removing box, and the bottom of the filter screen is hemispherical.

Preferably, the outer surface of the cyclone impurity removal box is fixedly provided with an air inlet pipe and an air outlet pipe, the air outlet pipe is communicated with the air inlet end of the vacuum pump through a pipeline, the air outlet pipe is communicated with the cyclone impurity removal box through a filter screen, and the bottom of the cyclone impurity removal box is fixedly provided with a collecting box.

Preferably, the dustproof box is inserted and fixed on the outer surface of the cyclone impurity removal box, the rotary drum is connected in a rotary sealing mode in the dustproof box, the second data acquisition module is fixed in the rotary drum in a embedded mode, a first motor for driving the rotary drum to rotate is fixed in the dustproof box, and the output end of the first motor is in linkage with the rotary drum.

Preferably, the first motor is fixed in the dustproof box, the output of first motor is fixed with the driving gear, the tip of rotary drum is fixed with the worm wheel, the dustproof box internal rotation is connected with the worm, worm and worm wheel meshing, just the tip of worm is fixed with first drive gear, driving gear and first drive gear meshing.

Preferably, a cleaning ring used for cleaning a filter screen is arranged in the cyclone impurity removal box, the end part of the cleaning ring is rotationally connected with a connecting pile, a first guide rod is fixed on the outer surface of the connecting pile, the connecting pile is slidably connected with a wire sleeve through the first guide rod, a reciprocating screw rod is connected in a penetrating threaded manner in the middle of the wire sleeve, one end of the reciprocating screw rod is rotationally connected with a fixing pile, the other end of the reciprocating screw rod penetrates through the cyclone impurity removal box and is rotationally and hermetically connected with the cyclone impurity removal box, a second motor is fixed on the cyclone impurity removal box, the output end of the second motor is fixedly connected with the reciprocating screw rod, a second guide rod is fixed on the outer surface of the fixing pile, one end of the second guide rod away from the fixing pile is fixedly connected with the cyclone impurity removal box, and the wire sleeve is slidably connected with the second guide rod.

Preferably, a spring is sleeved on the outer surface of the first guide rod, two ends of the spring are respectively propped against the connecting pile and the wire sleeve, a rack is fixed on the outer surface of the wire sleeve, a second transmission gear is fixed at the end part of the cleaning ring, and the rack is meshed with the second transmission gear.

Preferably, the cleaning ring is semicircular, two ends of the cleaning ring are connected with the driven ring in a rotary meshing manner, and the cleaning ring and the driven ring are combined into an annular shape which is matched with the shape of the filter screen.

Preferably, the control system further comprises a control module, the second motor is controlled to drive the reciprocating screw rod to rotate based on the blocking instruction, and the wire sleeve drives the cleaning ring to vertically reciprocate along the filter screen to clean the filter screen through the connecting pile; the vacuum pump execution power is adjusted based on the evacuation power value.

Preferably, the method for judging whether to generate the jam command or the maintenance command includes: if the average value is greater than or equal to a preset average value threshold value, generating a blocking instruction; and if the average value is smaller than the preset average threshold value, generating an overhaul instruction.

Preferably, the training method of the power recognition model comprises the following steps: the method comprises the steps of pre-collecting historical vacuumizing data of a mainframe box group, wherein the vacuumizing data comprise an average value of gray values of a filter screen image and vacuumizing power corresponding to the average value;

converting a group of vacuum pumping power corresponding to the average value into a group of feature vectors, and taking the feature vectors as input of a machine learning model, wherein the machine learning model takes a predicted vacuum pumping power value of each group of average value as output so as to minimize the sum of the prediction accuracy of all the vacuum pumping power as a training target; and training the machine learning model until the sum of the prediction accuracy reaches convergence, stopping training, and taking the trained machine learning model as a power recognition model.

From the above technical scheme, the application has the following beneficial effects:

1: through obtaining the cyclone edulcoration case and filter screen cooperation edulcoration, gaseous in-process that gets into the vacuum pump through cyclone edulcoration case and filter screen, can produce spiral air current in cyclone edulcoration incasement, make most wastepaper or dust drop into the collection incasement along the air current spiral downwards and collect, reduce the influence of wastepaper and dust to the filter screen.

2: The air pressure value II and the air pressure value I are respectively collected at the air inlet end of the vacuum pump and the air inlet end of the cyclone impurity removal box, whether the air pressure entering the vacuum pump is abnormal or not can be judged by analyzing the pressure difference between the air pressure value II and the air pressure value I, if the air pressure is abnormal, the dust box acquires a filter screen image again, the gray value of the image is analyzed, whether the filter screen is blocked or not can be judged, and if the filter screen is not blocked, the air pressure is abnormal, and then the vacuum pump or a pipeline connected with the vacuum pump has a problem.

3: Through training the power recognition model of the relation between the filter screen blocking condition and the vacuum pump power, when the filter screen is blocked, the vacuumizing power value can be output as the execution parameter of the vacuum pump according to the blocking condition, so that the vacuumizing power required by the paper towel folding machine is maintained, and the normal work of the paper towel folding machine is prevented from being influenced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a cyclone filter screen vacuum pump system applied to a paper towel folding machine;

FIG. 2 is a schematic diagram of a partial cross-sectional structure of a cyclone filter vacuum pump system for a tissue folder according to the present invention;

FIG. 3 is a schematic diagram of a partial cross-sectional structure of a cyclone impurity removal box of a cyclone filter screen vacuum pump system applied to a paper towel folding machine;

Fig. 4 is a schematic cross-sectional view of a dust box of a cyclone filter vacuum pump system applied to a paper towel folding machine;

FIG. 5 is a schematic view of the overall structure of a cleaning ring of a cyclone filter vacuum pump system for a tissue folder according to the present invention;

FIG. 6 is a schematic view of a cleaning ring and a filter screen of a cyclone filter screen vacuum pump system applied to a tissue folder;

FIG. 7 is a schematic diagram showing the structure of a cleaning ring of a cyclone filter screen vacuum pump system for a paper towel folding machine according to the present invention;

Fig. 8 is a flow chart of a cyclone filter screen vacuum pump system applied to a paper towel folding machine.

Description of the drawings: 1. a vacuum pump; 2. a cyclone impurity removing box; 21. an air inlet pipe; 22. an air outlet pipe; 23. a filter screen; 3. a collection box; 4. a dust-proof box; 41. a rotating drum; 42. a first motor; 421. a drive gear; 43. a worm; 431. a first transmission gear; 44. a worm wheel; 5. a cleaning ring; 501. a slave ring; 502. a second transmission gear; 51. connecting piles; 511. a first guide bar; 511a, springs; 52. a silk sleeve; 521. a rack; 53. a reciprocating screw rod; 54. fixing piles; 541. a second guide bar; 55. a second motor; 6. and a host case.

Detailed Description

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, the same or similar reference numerals indicate the same or similar parts and features. The drawings merely schematically illustrate the concepts and principles of embodiments of the disclosure and do not necessarily illustrate the specific dimensions and proportions of the various embodiments of the disclosure. Specific details or structures may be shown in exaggerated form in particular figures to illustrate related details or structures of embodiments of the present disclosure.

Example 1

Referring to fig. 1 and 2, a cyclone filter screen vacuum pump system applied to a paper towel folding machine comprises a vacuum pump 1, a cyclone impurity removing box 2, a main machine box 6 and a control system, wherein the vacuum pump 1 and the cyclone impurity removing box 2 are both arranged on the main machine box 6, a filter screen 23 for filtering and removing impurities of gas is fixed in the cyclone impurity removing box 2, and the gas enters the vacuum pump 1 after being filtered and removed by the cyclone impurity removing box 2;

Specifically, the outer surface of the cyclone impurity removing box 2 is fixedly provided with an air inlet pipe 21 and an air outlet pipe 22, the air outlet pipe 22 is communicated with the air inlet end of the vacuum pump 1 through a pipeline, the air outlet pipe 22 is communicated with the cyclone impurity removing box 2 through a filter screen 23, the bottom of the cyclone impurity removing box 2 is fixedly provided with a collecting box 3, an exemplary vacuum-pumping part of a paper towel folding machine is connected with the air inlet pipe 21 through a pipeline, the vacuum pump 1 works, air flow enters the cyclone impurity removing box 2 from the vacuum-pumping part of the paper towel folding machine, after entering the cyclone impurity removing box 2, spiral air flow is generated along the inner wall of the cyclone impurity removing box 2, flows to the bottom of the cyclone impurity removing box 2, and then enters the vacuum pump 1 after being filtered by the filter screen 23 upwards from the bottom of the cyclone impurity removing box 2, solid impurities such as paper scraps, dust and the like fall into the collecting box 3 under the influence of dead weight and spiral air flow, and the influence on the filter screen 23 is reduced.

Further, as shown in fig. 8, the control system includes a first data acquisition module, an analysis module, a second data acquisition module, a blockage recognition module, a power recognition module and a control module, wherein the modules are connected through a wired and/or wireless network;

the first data acquisition module is provided with two first data acquisition modules which are respectively fixed at the air inlet ends of the vacuum pump 1 and the cyclone impurity removal box 2, and can detect the first air pressure value entering the vacuum pump 1 and the second air pressure value entering the cyclone impurity removal box 2, and the first data acquisition module of the embodiment adopts a piezoresistive sensor, an acoustic sensor and other sensors with pressure detection functions, and is not particularly limited;

The analysis module is used for calculating an air pressure difference value based on the air pressure value I and the air pressure value II, comparing the air pressure difference value with a preset air pressure difference value threshold value and judging whether an abnormal instruction is generated or not; if the air pressure difference value is smaller than or equal to a preset air pressure difference value threshold value, no abnormal instruction is generated; if the air pressure difference value is larger than a preset air pressure difference value threshold value, generating an abnormal instruction;

The preset air pressure difference threshold value is used as the difference value between the measured air pressure value I and the air pressure value II as the preset air pressure difference threshold value under the normal condition, and the paper towel folding machine works normally;

The second data acquisition module is used for acquiring a filter screen image if an abnormal instruction is generated, carrying out gray scale processing on the filter screen image, acquiring gray scale values of i pixels, wherein i is an integer greater than 1, establishing an analysis set for the gray scale values of the i pixels, and the second data acquisition module is a high-definition camera;

The blockage recognition module is used for calculating the average value of the analysis set, comparing the average value with a preset average value threshold value, and judging whether to generate a blockage instruction or an overhaul instruction, wherein the preset average value threshold value is the average value of i pixel gray values acquired from a filter screen image under the condition that the normal operation of the paper towel folding machine is not affected, and the filter screen image is continuously acquired under an experimental environment until the previous moment affecting the normal operation of the paper towel folding machine, such as the filter screen image acquired in the previous minute is taken as an acquisition sample of the preset average threshold value, and the smaller the previous moment is, the more serious the blockage condition is when the average value threshold value is reached;

The power recognition module inputs the air pressure difference value into the trained power recognition model if a blockage instruction is generated, and outputs a vacuumizing power value which is used as an execution parameter of the current vacuum pump 1;

The control module adjusts the execution power of the vacuum pump 1 based on the vacuumizing power value, and aims to ensure that the paper towel folding machine can continue to work normally by automatically adjusting the power of the vacuum pump 1 when the filter screen 23 is blocked and the normal work of the paper towel folding machine is influenced;

the training method of the power recognition model comprises the following steps: under an experimental environment, collecting g groups of historical vacuumizing data, wherein the vacuumizing data comprise an average value of gray values of a filter screen image and vacuumizing power corresponding to the average value; the historical vacuumizing data is obtained by continuously changing the vacuumizing power of the vacuum pump 1 under the premise of the average value, so as to obtain negative pressure data of a plurality of paper towel folding machines, taking the vacuumizing power with the best negative pressure data effect of the paper towel folding machines as a label corresponding to the average value, and obtaining three groups of negative pressure data respectively under the condition of not influencing the working of the paper towel folding machines, wherein the vacuumizing power corresponds to the average value 、AndWherein, the method comprises the steps of, wherein,Then take the minimumThe label corresponding to the average value has the advantages that the working power of the vacuum pump 1 is adjusted to be minimum, so that the working requirement of the paper towel folding machine can be met, and the energy is saved;

Converting a group of vacuum pumping power corresponding to the average value into a group of feature vectors, and taking the feature vectors as input of a machine learning model, wherein the machine learning model takes a predicted vacuum pumping power value of each group of average value as output so as to minimize the sum of the prediction accuracy of all the vacuum pumping power as a training target; the calculation formula of the prediction accuracy is as follows: Wherein, the method comprises the steps of, wherein, For the number of feature vectors,In order to predict the accuracy of the device,Is the firstThe predicted vacuum power value corresponding to the first feature vector of the group,Is the firstThe actual vacuumizing power value corresponding to the first characteristic vector is set; training the machine learning model until the sum of the prediction accuracy reaches convergence, wherein the convergence criterion is larger than or equal to the sum of the prediction accuracy, namely the model gradually approaches an optimal solution or reaches a stable state in the training process, and in this case, when the prediction accuracy reaches or exceeds a certain specific threshold value, the model reaches convergence; in particular, when the prediction accuracy is greater than or equal to some predetermined criterion, the model has fitted the data accurately to some extent and no further training or adjustment is required, meaning that the model has learned key patterns and features in the data and can be used for actual prediction or decision-making, the criterion for specific convergence being set by a person skilled in the art according to the specific model training situation; and taking the trained machine learning model as a power recognition model, wherein the machine learning model is one of a cyclic neural network, a long-short-time memory network and a gate control cyclic unit.

The method for judging whether to generate the blocking instruction or the overhauling instruction comprises the following steps: if the average value is greater than or equal to a preset average value threshold value, generating a blocking instruction; if the average value is smaller than the preset average threshold value, generating a maintenance instruction, and sending the maintenance instruction to an audible and visual alarm or a remote control center to remind a worker of maintenance before, because the second data module works after the abnormal instruction is generated, therefore, even if the average value is smaller than the preset average threshold value, it is only indicated that the filter screen 23 is not blocked, but an abnormal command is generated, and it is indicated that the pipeline connected between the cyclone impurity removal box 2 and the vacuum pump 1 has air leakage or that the vacuum pump 1 itself has a problem.

Example two

Referring to fig. 3 and fig. 4, according to the second improvement of the embodiment, a dust-proof box 4 is inserted and fixed on the outer surface of the cyclone impurity-removing box 2, a rotary drum 41 is connected in a rotating and sealing manner in the dust-proof box 4, a second data collecting module is embedded and fixed in the rotary drum 41, a first motor 42 for driving the rotary drum 41 to rotate is fixed in the dust-proof box 4, an output end of the first motor 42 is linked with the rotary drum 41, when the second data collecting module does not work, the second data collecting module faces the interior of the dust-proof box 4, paper dust or dust in the cyclone impurity-removing box 2 is prevented from adhering to the second data collecting module, the second data collecting module is prevented from working, when the second data collecting module works, the rotary drum 41 is driven to turn over by the first motor 42, the second data collecting module faces the cyclone impurity-removing box 2, and a filter screen image is photographed;

specifically, the first motor 42 is fixed in the dustproof box 4, the output end of the first motor 42 is fixed with the driving gear 421, the end part of the rotary drum 41 is fixed with the worm wheel 44, the dustproof box 4 is rotationally connected with the worm 43, the worm 43 is meshed with the worm wheel 44, the end part of the worm 43 is fixed with the first transmission gear 431, the driving gear 421 is meshed with the first transmission gear 431, the first motor 42 drives the first transmission gear 431 to rotate through the driving gear 421, the first transmission gear 431 drives the worm wheel 44 to rotate through the worm 43, the rotary drum 41 can be driven to overturn, the space layout in the dustproof box 4 is fully utilized, the worm 43 and the worm wheel 44 are in transmission, the self-locking performance is achieved, and the stability of the rotary drum 41 when in stop is ensured.

Example III

Referring to fig. 2, 5, 6 and 7, based on the above embodiment, the improvement point of the present embodiment is that the bottom of the filter screen 23 is hemispherical, the cyclone impurity removing box 2 is provided with a cleaning ring 5 for cleaning the filter screen 23, the cleaning ring 5 is semicircular, and two ends of the cleaning ring 5 are rotatably engaged with a driven ring 501, that is, the cleaning ring 5 rotates, the driven ring 501 rotates reversely, so that the cleaning ring 5 and the driven ring 501 can be combined;

Referring to fig. 6 and 7, the cleaning ring 5 and the driven ring 501 are combined into a ring shape matching with the shape of the filter screen 23, that is, the cleaning ring 5 and the driven ring 501 are combined into a whole ring shape and are surrounded on the filter screen 23; for example, when the cleaning ring 5 and the driven ring 501 move from top to bottom once, that is, the state of fig. 6 is changed to the state of fig. 7, and the cleaning ring 5 and the driven ring 501 move to the bottom of the filter screen 23 and turn over to close, the bottom of the filter screen 23 can be just cleaned, so as to ensure the cleaning integrity of the filter screen 23, and in this embodiment, the cleaning ring 5 and the driven ring 501 can adopt a brush cleaning structure or a structure with cleaning functions such as electrostatic adsorption cleaning, which is not limited in particular;

Specifically, referring to fig. 2 and 5, the end of the cleaning ring 5 is rotatably connected with a connection pile 51, the outer surface of the connection pile 51 is fixed with a first guide rod 511, the connection pile 51 is slidably connected with a wire sleeve 52 through the first guide rod 511, the middle part of the wire sleeve 52 is in threaded connection with a reciprocating screw rod 53, and the reciprocating screw rod 53 rotates to drive the wire sleeve 52 to reciprocate on the reciprocating screw rod 53, so that the connection pile 51 is driven to reciprocate up and down by the first guide rod 511, and the cleaning ring 5 reciprocates up and down;

More specifically, one end of the reciprocating screw rod 53 is rotatably connected with a fixing pile 54, a second guide rod 541 is fixed on the outer surface of the fixing pile 54, one end of the second guide rod 541 away from the fixing pile 54 is fixedly connected with the cyclone impurity removal box 2, the wire sleeve 52 is slidably connected with the second guide rod 541, and the second guide rod 541 plays a role in limiting the wire sleeve 52, so that the wire sleeve 52 is prevented from rotating along with the reciprocating screw rod 53;

the other end of the reciprocating screw rod 53 penetrates through the cyclone impurity removing box 2 and is in rotary sealing connection with the cyclone impurity removing box 2, a second motor 55 is fixed on the cyclone impurity removing box 2, the output end of the second motor 55 is fixedly connected with the reciprocating screw rod 53, and the reciprocating screw rod 53 can be driven to rotate through the operation of the second motor 55.

Further, referring to fig. 5, 6 and 7, a spring 511a is sleeved on the outer surface of the first guide rod 511, two ends of the spring 511a respectively abut against the connecting pile 51 and the wire sleeve 52, the spring 511a is used for providing elastic force for the connecting pile 51, when the connecting pile 51 is not limited, the connecting pile 51 is always in the state shown in fig. 5 and 6, a rack 521 is fixed on the outer surface of the wire sleeve 52, a second transmission gear 502 is fixed on the end part of the cleaning ring 5, and the rack 521 is meshed with the second transmission gear 502;

For example, when the reciprocating screw 53 rotates, the wire sleeve 52 reciprocates along the second guide rod 541, if the wire sleeve 52 moves to the bottommost end of the reciprocating screw 53 through the first guide rod 511 with the connection pile 51, the connection pile 51 is blocked and limited by the fixing pile 54, at this time, the cleaning ring 5 is located at the connection point of the cylindrical structure and the hemispherical structure in the filter screen 23, the reciprocating screw 53 continues to rotate, the wire sleeve 52 continues to move downwards, the spring 511a contracts, the connection pile 51 remains motionless, the wire sleeve 52 pushes the second transmission gear 502 to rotate with the rack 521, so as to drive the cleaning ring 5 to turn over, and meanwhile, the driven ring 501 turns over with turning over until the cleaning ring 5 and the driven ring 501 are combined to clean the bottom of the filter screen 23, at this time, the wire sleeve 52 also moves to the bottom of the reciprocating screw 53 and moves upwards, and the spring 511a releases the elastic force accordingly until the connection pile 51 and the cleaning ring 5 reset, and the cylindrical structure in the filter screen 23 can be cleaned, so that the filter screen 23 can be cleaned fully.

Further, as shown in fig. 2 and fig. 5, after the blocking command is generated, the control module controls the vacuum pump 1 to adjust power and controls the second motor 55 to drive the reciprocating screw rod 53 to rotate, and the wire sleeve 52 drives the cleaning ring 5 to vertically reciprocate along the filter screen 23 through the connecting pile 51 to clean the filter screen 23;

In this embodiment, after the filter screen 23 has a blockage problem, two schemes are executed simultaneously to solve the blockage problem of the filter screen 23, so that the paper towel folding machine is ensured not to stop, and the working efficiency of the paper towel folding machine is ensured.

It should be noted that, when the cleaning of the filter screen 23 is completed, the difference between the air pressure value one and the air pressure value two is calculated to restore the air pressure difference to be normal, and the vacuum pump 1 can restore the original power, which can be controlled by the PID controller, which is a known technology and will not be described herein.

The exemplary implementation of the solution proposed by the present disclosure has been described in detail hereinabove with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and adaptations can be made to the specific embodiments described above and that various combinations of the technical features, structures proposed by the present disclosure can be made without departing from the scope of the present disclosure, which is defined by the appended claims.

Claims (7)

1. The utility model provides a be applied to dragon whirlwind filter screen vacuum pump system of paper handkerchief folder, includes vacuum pump (1), dragon whirlwind edulcoration case (2) and control system, and gas gets into vacuum pump (1) after the edulcoration of dragon whirlwind edulcoration case (2) filtration, its characterized in that, the inside of dragon whirlwind edulcoration case (2) is fixed with filter screen (23) that are used for gaseous filtration to remove the edulcoration, the bottom of filter screen (23) is hemispherical;

The cyclone impurity removal box (2) is internally provided with a cleaning ring (5) for cleaning a filter screen (23), the end part of the cleaning ring (5) is rotationally connected with a connecting pile (51), the outer surface of the connecting pile (51) is fixedly provided with a first guide rod (511), the connecting pile (51) is slidably connected with a wire sleeve (52) through the first guide rod (511), the middle part of the wire sleeve (52) is in threaded connection with a reciprocating screw rod (53), one end of the reciprocating screw rod (53) is rotationally connected with a fixed pile (54), the other end of the reciprocating screw rod (53) penetrates through the cyclone impurity removal box (2) and is rotationally and hermetically connected with the cyclone impurity removal box (2), the cyclone impurity removal box (2) is fixedly provided with a second motor (55), the output end of the second motor (55) is fixedly connected with the reciprocating screw rod (53), the outer surface of the fixed pile (54) is fixedly provided with a second guide rod (541), one end of the second guide rod (541) far away from the fixed pile (54) is fixedly connected with the cyclone impurity removal box (2), and the second guide rod (541) is slidingly connected with the second guide rod (541).

The outer surface of the first guide rod (511) is sleeved with a spring (511 a), two ends of the spring (511 a) are respectively propped against the connecting pile (51) and the wire sleeve (52), a rack (521) is fixed on the outer surface of the wire sleeve (52), a second transmission gear (502) is fixed at the end part of the cleaning ring (5), and the rack (521) is meshed with the second transmission gear (502);

The cleaning ring (5) is semicircular, two ends of the cleaning ring (5) are connected with the driven ring (501) in a rotating and meshing manner, and the cleaning ring (5) and the driven ring (501) are combined into a ring shape which is matched with the shape of the filter screen (23);

The control system includes:

The first data acquisition modules are provided with two air inlet ends which are respectively fixed at the vacuum pump (1) and the cyclone impurity removal box (2) and are respectively used for acquiring an air pressure value I and an air pressure value II;

The analysis module is used for calculating an air pressure difference value based on the air pressure value I and the air pressure value II, comparing the air pressure difference value with a preset air pressure difference value threshold value and judging whether an abnormal instruction is generated or not;

The second data acquisition module is used for acquiring a filter screen image if an abnormal instruction is generated, carrying out gray level processing on the filter screen image, acquiring gray level values of i pixels and establishing an analysis set of the gray level values of the i pixels;

The blockage identifying module calculates the average value of the analysis set, compares the average value with a preset average value threshold value, and judges whether to generate a blockage instruction or a maintenance instruction;

and the power recognition module is used for inputting the air pressure difference value into the trained power recognition model and outputting a vacuumizing power value if a blockage instruction is generated, wherein the vacuumizing power value is used as an execution parameter of the current vacuum pump (1).

2. The cyclone filter screen vacuum pump system applied to the tissue folding machine according to claim 1, wherein an air inlet pipe (21) and an air outlet pipe (22) are fixed on the outer surface of the cyclone impurity removal box (2), the air outlet pipe (22) is communicated with the air inlet end of the vacuum pump (1) through a pipeline, the air outlet pipe (22) is communicated with the cyclone impurity removal box (2) through a filter screen (23), and a collecting box (3) is fixed at the bottom of the cyclone impurity removal box (2).

3. The cyclone filter screen vacuum pump system applied to the tissue folding machine according to claim 1, wherein a dust-proof box (4) is inserted and fixed on the outer surface of the cyclone impurity removal box (2), a rotary drum (41) is connected in a sealing manner in the rotation of the dust-proof box (4), a second data acquisition module is fixed in the rotary drum (41), a first motor (42) for driving the rotary drum (41) to rotate is fixed in the dust-proof box (4), and the output end of the first motor (42) is linked with the rotary drum (41).

4. A cyclone filter screen vacuum pump system applied to a paper towel folding machine according to claim 3, characterized in that the first motor (42) is fixed in a dust-proof box (4), a driving gear (421) is fixed at the output end of the first motor (42), a worm wheel (44) is fixed at the end of the rotary drum (41), a worm (43) is rotationally connected with the dust-proof box (4), the worm (43) is meshed with the worm wheel (44), a first transmission gear (431) is fixed at the end of the worm (43), and the driving gear (421) is meshed with the first transmission gear (431).

5. The cyclone filter screen vacuum pump system applied to the tissue folding machine according to claim 1, wherein the control system further comprises a control module, the control module controls the second motor (55) to drive the reciprocating screw rod (53) to rotate based on a blocking instruction, and the screw sleeve (52) drives the cleaning ring (5) to vertically reciprocate along the filter screen (23) to clean the filter screen (23) through the connecting pile (51); the vacuum pump (1) execution power is adjusted based on the evacuation power value.

6. The cyclone filter vacuum pump system for a tissue folder according to claim 1, wherein the method for judging whether to generate the blockage instruction or the maintenance instruction comprises: if the average value is greater than or equal to a preset average value threshold value, generating a blocking instruction; and if the average value is smaller than the preset average threshold value, generating an overhaul instruction.

7. The cyclone filter vacuum pump system for a tissue folder according to claim 1, wherein the training method of the power recognition model comprises the following steps: pre-sampling g groups of historical vacuumizing data, wherein the vacuumizing data comprise an average value of gray values of a filter screen image and vacuumizing power corresponding to the average value;

converting a group of vacuum pumping power corresponding to the average value into a group of feature vectors, and taking the feature vectors as input of a machine learning model, wherein the machine learning model takes a predicted vacuum pumping power value of each group of average value as output so as to minimize the sum of the prediction accuracy of all the vacuum pumping power as a training target; and training the machine learning model until the sum of the prediction accuracy reaches convergence, stopping training, and taking the trained machine learning model as a power recognition model.