阅读说明：本技术 一种袋式除尘器的智能卸灰控制方法 (Intelligent ash discharge control method of bag type dust collector ) 是由 刘艳 刘滨 胡建鹏 张翼 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种袋式除尘器的智能卸灰控制方法,根据卸灰斗内的粉尘量自动调整对应拉链机运行的速率,设定的高料位值防止积灰淹没滤袋,低料位值避免空排现象,保证拉链机可对粉尘进行快速卸料的同时,避免能源浪费,大大提高了卸灰的效率。(The invention discloses an intelligent ash discharge control method of a bag type dust collector, which automatically adjusts the running speed of a corresponding zipper machine according to the dust amount in an ash discharge hopper, prevents accumulated dust from submerging a filter bag by a set high material level value, avoids the phenomenon of empty discharge by a low material level value, ensures that the zipper machine can rapidly discharge dust, avoids energy waste and greatly improves the ash discharge efficiency.)

1. An intelligent ash discharge control method of a bag type dust collector is characterized in that: the bag-type dust collector is divided into a plurality of groups, each group of bag-type dust collectors are positioned at the same horizontal height and arranged in rows, a corresponding zipper machine is arranged right below each group of bag-type dust collectors, and the ash discharge port at the bottommost end of each group of bag-type dust collectors faces the conveying belt of the corresponding zipper machine;

the intelligent ash discharge control method specifically comprises the following steps: a high level indicator and a low level indicator are arranged in an ash discharge hopper of each bag type dust collector, the high level indicators and the low level indicators in the plurality of bag type dust collectors are connected with a controller, and the controller controls the frequency of a motor of a corresponding zipper machine according to the reading of the level indicator of each group of bag type dust collectors;

(1) when the readings of the level meters of the group of bag type dust collectors exceed the high level value corresponding to the high level meter, the controller controls the motor frequency corresponding to the zipper machine to be the highest motor frequency, and when the number of the bag type dust collectors exceeding the high level value in the group of bag type dust collectors is gradually reduced, the motor frequency of the zipper machine is gradually reduced;

(2) when all real-time material level values in a group of bag type dust collectors are lower than high material level values, the motor frequency of the corresponding zipper machine is controlled according to the low material level values corresponding to the low material level meters, namely when the number of the bag type dust collectors lower than the low material level values in a group of bag type dust collectors is gradually increased, the motor frequency of the zipper machine is gradually reduced, and when the real-time material level values in the discharge hoppers of all the bag type dust collectors in a group of bag type dust collectors are lower than the low material level values, the zipper machine stops discharging ash.

2. The intelligent dust discharge control method of a bag type dust collector as claimed in claim 1, wherein: the controller is a PID controller, and the PID controller is connected with the motor frequency converters of all the zipper machines, so that the ash discharge rate of all the zipper machines is adjusted.

3. The intelligent dust discharge control method of a bag type dust collector as claimed in claim 1, wherein: after the controller receives the real-time material level values of all the material level meters, when the real-time material level values are higher than the high material level values corresponding to the high material level meters or lower than the low material level values corresponding to the low material level meters, the controller carries out dust quantity alarm reminding aiming at the bag type dust collector.

4. The intelligent dust discharge control method of a bag type dust collector as claimed in claim 1, wherein: the ash discharging hopper of the bag type dust collector is also internally provided with a middle material level meter connected with the controller, when all real-time material level values in a group of bag type dust collectors are lower than a high material level value, the motor frequency of the corresponding zipper machine is controlled according to the middle material level value corresponding to the middle material level meter, namely when the number of the bag type dust collectors in the group of bag type dust collectors is lower than the middle material level value and is gradually increased, when the real-time material level values in the discharging hoppers of all the bag type dust collectors in the group of bag type dust collectors are lower than the middle material level value and higher than the bottom material level value, the motor frequency of the zipper machine is the middle-low motor frequency, when the number of the bag type dust collectors in the group of bag type dust collectors is lower than the low material level value and is gradually increased, the motor frequency of the zipper machine is continuously and is gradually decreased, when the real-time material in the discharging hopper of only one bag type dust collector in the group of bag type dust collectors is higher than the low material level value, the motor frequency of the zipper machine is the lowest motor frequency.

5. The intelligent dust discharge control method of a bag type dust collector as claimed in claim 4, wherein: when the number of the bag type dust collectors exceeding the high material level value in one group of bag type dust collectors is gradually reduced, the motor frequency of the zipper machine is gradually reduced by an equal frequency value H1; when the number of the bag type dust collectors in one group of bag type dust collectors is gradually increased under the medium material level value, the motor frequency of the zipper machine is gradually reduced by an equal frequency value H2; when the number of the bag type dust collectors lower than the low material level value in one group of bag type dust collectors is gradually increased, the motor frequency of the zipper machine is continuously and gradually reduced to an equal frequency value H3; the frequency values H1, H2 and H3 are all equal.

Technical Field

The invention relates to the field of bag type dust collectors, in particular to an intelligent dust discharging control method of a bag type dust collector.

Background

The working principle of the bag type dust collector is 'filtration-deashing-filtration', the filtration realizes gas-solid separation through a filter bag to remove dust particles in dust-containing gas, the deashing is to clear away dust accumulated on the filter bag through pulse compressed air and recover the filtration performance of the filter bag again, the deashing dust falls into a dust hopper at the bottom of the bag type dust collector, and the dust in the dust hopper adopts a timed dust discharging mode, so that the dust can not be discharged according to the dust amount in the dust hopper, when the dust in the dust hopper is excessive, the dust in the deashing blows back to the filter bag to influence the filtration efficiency of the filter bag, and when the dust in the dust hopper is small, the problem of empty discharge can be caused, and energy is wasted.

Disclosure of Invention

The invention aims to provide an intelligent ash discharge control method of a bag type dust collector, which adopts a zipper machine to rapidly discharge ash, effectively controls the operation speed of the zipper machine according to the dust amount in an ash discharge hopper, ensures the zipper machine to discharge the ash efficiently and does not cause energy waste.

The technical scheme of the invention is as follows:

an intelligent ash discharge control method for a bag type dust collector comprises the following steps that a plurality of bag type dust collectors are uniformly divided into a plurality of groups, each group of bag type dust collectors are located at the same horizontal height and are arranged in rows, a corresponding zipper machine is arranged right below each group of bag type dust collectors, and an ash discharge opening at the bottommost end of each group of bag type dust collectors faces a conveying belt of the corresponding zipper machine;

the intelligent ash discharge control method specifically comprises the following steps: a high level indicator and a low level indicator are arranged in an ash discharge hopper of each bag type dust collector, the high level indicators and the low level indicators in the plurality of bag type dust collectors are connected with a controller, and the controller controls the frequency of a motor of a corresponding zipper machine according to the reading of the level indicator of each group of bag type dust collectors;

(1) when the readings of the level meters of the group of bag type dust collectors exceed the high level value corresponding to the high level meter, the controller controls the motor frequency corresponding to the zipper machine to be the highest motor frequency, and when the number of the bag type dust collectors exceeding the high level value in the group of bag type dust collectors is gradually reduced, the motor frequency of the zipper machine is gradually reduced;

(2) when all real-time material level values in a group of bag type dust collectors are lower than high material level values, the motor frequency of the corresponding zipper machine is controlled according to the low material level values corresponding to the low material level meters, namely when the number of the bag type dust collectors lower than the low material level values in a group of bag type dust collectors is gradually increased, the motor frequency of the zipper machine is gradually reduced, and when the real-time material level values in the discharge hoppers of all the bag type dust collectors in a group of bag type dust collectors are lower than the low material level values, the zipper machine stops discharging ash.

The controller is a PID controller, and the PID controller is connected with the motor frequency converters of all the zipper machines, so that the ash discharge rate of all the zipper machines is adjusted.

After the controller receives the real-time material level values of all the material level meters, when the real-time material level values are higher than the high material level values corresponding to the high material level meters or lower than the low material level values corresponding to the low material level meters, the controller carries out dust quantity alarm reminding aiming at the bag type dust collector.

The ash discharging hopper of the bag type dust collector is also internally provided with a middle material level meter connected with the controller, when all real-time material level values in a group of bag type dust collectors are lower than a high material level value, the motor frequency of the corresponding zipper machine is controlled according to the middle material level value corresponding to the middle material level meter, namely when the number of the bag type dust collectors in the group of bag type dust collectors is lower than the middle material level value and is gradually increased, when the real-time material level values in the discharging hoppers of all the bag type dust collectors in the group of bag type dust collectors are lower than the middle material level value and higher than the bottom material level value, the motor frequency of the zipper machine is the middle-low motor frequency, when the number of the bag type dust collectors in the group of bag type dust collectors is lower than the low material level value and is gradually increased, the motor frequency of the zipper machine is continuously and is gradually decreased, when the real-time material in the discharging hopper of only one bag type dust collector in the group of bag type dust collectors is higher than the low material level value, the motor frequency of the zipper machine is the lowest motor frequency.

When the number of the bag type dust collectors exceeding the high material level value in one group of bag type dust collectors is gradually reduced, the motor frequency of the zipper machine is gradually reduced by an equal frequency value H1; when the number of the bag type dust collectors in one group of bag type dust collectors is gradually increased under the medium material level value, the motor frequency of the zipper machine is gradually reduced by an equal frequency value H2; when the number of the bag type dust collectors lower than the low material level value in one group of bag type dust collectors is gradually increased, the motor frequency of the zipper machine is continuously and gradually reduced to an equal frequency value H3; the frequency values H1, H2 and H3 are all equal.

The invention has the advantages that:

according to the zipper machine, the operation speed of the corresponding zipper machine is automatically adjusted according to the dust amount in the dust discharging hopper, the set high material level value prevents dust from submerging a filter bag, the low material level value avoids the phenomenon of empty discharge, the zipper machine can discharge dust quickly, meanwhile, energy waste is avoided, and the dust discharging efficiency is greatly improved.

Drawings

FIG. 1 is a schematic diagram of the construction of a bag house dust collector of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an intelligent ash discharge control method for bag type dust collectors, wherein sixteen bag type dust collectors 1 are equally divided into four groups, each group of bag type dust collectors 1 are located at the same horizontal height and are arranged in rows, a corresponding zipper machine 2 is arranged right below each group of bag type dust collectors 1, and an ash discharge port at the bottom end of each group of bag type dust collectors 1 faces a conveying belt of the corresponding zipper machine 1;

the intelligent ash discharge control method specifically comprises the following steps: a high charge level indicator 4, a middle charge level indicator 5 and a low charge level indicator 6 are arranged in an ash discharge hopper 3 of each bag type dust collector, the high charge level indicators 4, the middle charge level indicators 5 and the low charge level indicators 6 in sixteen bag type dust collectors are connected with a PID controller, and the PID controller controls the frequency of a motor of a corresponding zipper machine according to the following steps according to the reading number of the charge level indicator of each group of bag type dust collectors;

(1) when the readings of the level meters of the group of bag type dust collectors exceed the high level value corresponding to the high level meter 4, the PID controller controls the motor frequency converter corresponding to the zipper machine 2 to enable the motor frequency to reach the highest motor frequency, and when the number of the bag type dust collectors 1 exceeding the high level value in the group of bag type dust collectors 1 is gradually reduced (the number of the bag type dust collectors exceeding the high level value is 3, 2 is up to 1), the motor frequency of the zipper machine 2 is gradually reduced by an equal frequency value H1;

(2) when all real-time material level values in a group of bag type dust collectors 1 are lower than a high material level value, the PID controller firstly controls a motor frequency converter corresponding to the zipper machine 2 according to a medium material level value corresponding to the medium material level meter 5, namely when the number of the bag type dust collectors lower than the medium material level value in the group of bag type dust collectors is gradually increased (1, 2, 3 to 4), the motor frequency of the zipper machine 2 is gradually reduced by an equal frequency value H2, when the real-time material level values in the discharge hoppers of the four bag type dust collectors 1 in the group of bag type dust collectors are lower than the medium material level value and higher than the material level value corresponding to the low material level meter 4, the motor frequency of the zipper machine 2 is adjusted to be a medium-low motor frequency, and when the number of the bag type dust collectors 1 lower than the low material level value in the group of bag type dust collectors 1 is gradually increased (1, 2, 3 to 4), the motor frequency of the zipper machine 2 is continuously reduced by an equal frequency value H3, when the real-time material level value in the discharging hopper of only one bag type dust collector in one group of bag type dust collectors is higher than the low material level value, the motor frequency of the zipper machine is the lowest motor frequency, and when the real-time material level values in the discharging hoppers 3 of all the bag type dust collectors in one group of bag type dust collectors are lower than the low material level value, the zipper machine 2 stops ash discharging.

After the PID controller receives the real-time level values of all the level meters, when the real-time level values are higher than the high level values corresponding to the high level meters 4 or lower than the low level values corresponding to the low level meters 6, the PID controller carries out dust amount alarm reminding on the bag type dust collector.

The frequency values H1, H2 and H3 are all equal.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.