CN111632442A - Dust removal system and dust removal method - Google Patents
Dust removal system and dust removal method Download PDFInfo
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- CN111632442A CN111632442A CN202010559471.1A CN202010559471A CN111632442A CN 111632442 A CN111632442 A CN 111632442A CN 202010559471 A CN202010559471 A CN 202010559471A CN 111632442 A CN111632442 A CN 111632442A
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- 239000000428 dust Substances 0.000 title claims abstract description 307
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001514 detection method Methods 0.000 claims abstract description 40
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims description 31
- 238000004891 communication Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 7
- 238000005453 pelletization Methods 0.000 claims description 4
- 238000010410 dusting Methods 0.000 claims 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 238000011217 control strategy Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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Abstract
The invention relates to the field of industrial dust removal, and discloses a dust removal system and a dust removal method, wherein the dust removal system comprises a dust removal device (10), a dust collection pipeline (20) and a plurality of dust collection branch pipes (30) respectively used for a plurality of dust collection points, the dust collection pipeline (20) is used for collecting and conveying impurities sucked and collected from the plurality of dust collection branch pipes (30) to the dust removal device (10) through suction air flow provided by the dust removal device (10), the plurality of dust collection branch pipes (30) are communicated with each other in pairs through a plurality of communicating pipes (40), each communicating pipe (40) is provided with a valve (50) capable of adjusting the opening, and the dust removal system further comprises a detection unit used for monitoring the air flow state in each dust collection branch pipe (30). According to the detection result of the detection unit, the opening degree of the valve can be controlled, so that each dust suction branch pipe is configured with airflow in a corresponding state, and each dust suction point obtains a required dust suction effect.
Description
Technical Field
The invention relates to the field of industrial dust removal, in particular to a dust removal system and a dust removal method.
Background
The dust removal system is widely applied to industrial production, such as the sand aggregate industry. When the device is used, the draught fan of the dust removal system is used for exhausting air to form negative pressure to absorb raised dust generated by the production line in the processes of crushing, screening, conveying and the like, and dust-containing gas is filtered and purified by the dust remover to be clean gas and then is discharged into the atmosphere by the draught fan. Because the production line has a plurality of raise dust points, need distribute the amount of wind to the dust removal branch pipe that is used for different dust removal points through the main line, each dust removal point is because how much of raise dust volume needs the air current of configuration different states (for example pressure, amount of wind), the good or bad direct influence production environment of dust pelletizing system dust absorption effect.
Disclosure of Invention
The invention aims to overcome the problem of undesirable airflow state configured by each dust removal point in the prior art, and provides a dust removal system which can realize self-adjustment of the airflow state among the dust removal points so that the airflow state of each dust removal point reaches the required configuration.
In order to achieve the above object, in one aspect, the present invention provides a dust removal system, where the dust removal system includes a dust removal device, a dust collection pipeline, and a plurality of dust collection branch pipes respectively used for a plurality of dust collection points, the dust collection pipeline is configured to collect and convey impurities collected from the plurality of dust collection branch pipes to the dust removal device by suction airflow provided by the dust removal device, the plurality of dust collection branch pipes are sequentially communicated with each other two by two through a plurality of communication pipes, each communication pipe is provided with a valve capable of adjusting an opening, and the dust removal system further includes a detection unit configured to monitor an airflow state in each dust collection branch pipe.
Preferably, the dust removal system comprises a control unit for controlling the valve, and the control unit is electrically connected with the detection unit so as to be capable of controlling the valve according to feedback of the detection unit.
Preferably, the detection unit includes a pressure sensor for detecting air pressure in the dust suction branch pipe.
Preferably, the control unit is configured to control the opening of the valve according to air pressures in the two dust collection branch pipes connected by the communication pipe, so that the air pressures in the two dust collection branch pipes are balanced.
Preferably, the control unit is configured to sequentially control the opening of the plurality of valves until the air pressure in each of the dust collection branch pipes reaches a pressure balance.
Preferably, the control unit is configured to: control a plurality of the aperture of valve in proper order for every two of communicating pipe connection after atmospheric pressure in the dust absorption branch pipe reaches pressure balance, compare in proper order again by two of communicating pipe connection atmospheric pressure in the dust absorption branch pipe is adjusted as required the aperture of valve is up to every atmospheric pressure in the dust absorption branch pipe all reaches pressure balance.
Preferably, the pressure balance is such that the pressure difference of the air pressure in the two dust suction branch pipes is not greater than a first preset value; and/or the dust removal system comprises an alarm unit electrically connected with the control unit, and the control unit is set to control the alarm unit to alarm when the pressure difference of the air pressure in any two dust collection branch pipes reaches a second preset value.
Preferably, the dust collector includes the draught fan, the draught fan with dust absorption pipeline intercommunication, the control unit can control the operation of draught fan.
Preferably, the control unit is configured to adjust the valve and/or the induced draft fan so that the air pressure in each of the dust suction branch pipes reaches a predetermined pressure Δ P.
Preferably, when the air pressure in each of the dust suction branch pipes reaches a pressure equilibrium, the control unit is configured to:
when the air pressure P in the dust collection branch pipe meets the condition that P is less than or equal to delta P, the control unit controls the induced draft fan to increase the air volume until P is less than or equal to delta P and less than or equal to 1.1 delta P;
when the air pressure P of the dust collection branch pipe meets the condition that P is larger than or equal to 1.1 delta P, the control unit controls the induced draft fan to reduce the air volume until P is larger than or equal to P and smaller than or equal to 1.1 delta P.
The invention also provides a dust removal method, wherein the dust removal method uses the dust removal system of the invention, and the method comprises the following steps:
s1, monitoring the airflow state of each dust suction branch pipe through the detection unit;
and S2, controlling the opening of the valve according to the monitoring result of the detection unit, so that the airflow states of the dust collection branch pipes are consistent.
Preferably, the detection unit includes a pressure sensor for detecting air pressure in the dust suction branch pipe, and the step S2 includes:
s21, sequentially controlling the opening of the valves according to the feedback of the pressure sensor, so that the air pressure in the two dust absorption branch pipes connected with each communicating pipe reaches pressure balance;
and S22, sequentially comparing the air pressures in the plurality of dust absorption branch pipes, and continuously adjusting or keeping the opening of the valve according to the comparison result.
Preferably, step S22 includes:
when the air pressures in any two of the dust absorption branch pipes do not reach the pressure balance, the step S21 is repeated to continuously adjust the opening of the valve;
and when the air pressure in each dust absorption branch pipe reaches pressure balance, the opening degree of the valve is kept.
Preferably, the dust removing device comprises an induced draft fan, and the method comprises adjusting the valve and/or the induced draft fan to enable the air pressure in each dust suction branch pipe to reach a preset pressure delta P.
Preferably, when the air pressure in each of the suction branch pipes reaches a pressure equilibrium:
when the air pressure P in the dust absorption branch pipe meets the condition that P is less than or equal to delta P, the draught fan increases the air quantity until P is less than or equal to 1.1 delta P;
when the air pressure P of the dust collection branch pipe meets the condition that P is more than or equal to 1.1 delta P, the air quantity of the induced draft fan is reduced until P is more than or equal to delta P and less than or equal to 1.1 delta P.
Through the technical scheme, the opening of the valve can be controlled according to the detection result of the detection unit, so that each dust collection branch pipe is configured with airflow in a corresponding state, and each dust collection point obtains a required dust collection effect.
Drawings
FIG. 1 is a schematic diagram illustrating one embodiment of a dust extraction system of the present invention.
Description of the reference numerals
10-a dust removal device, 11-an induced draft fan, 12-a dust remover, 13-a stone dust bin, 20-a dust collection pipeline, 30-a dust collection branch pipe, 40-a communication pipe, 50-a valve, 60-a control unit, 70-a pressure sensor, D1-a dust collection point 1, D2-a dust collection point 2 and DN-a dust collection point N.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
According to an aspect of the present invention, there is provided a dust removing system, wherein the dust removing system includes a dust removing device 10, a dust suction duct 20, and a plurality of dust suction branch pipes 30 respectively used for a plurality of dust suction points, the dust suction duct 20 is configured to collect and convey impurities sucked and picked up from the plurality of dust suction branch pipes 30 to the dust removing device 10 by a suction airflow provided by the dust removing device 10, the plurality of dust suction branch pipes 30 are in two-to-two communication via a plurality of communication pipes 40 in sequence, each communication pipe 40 is provided with a valve 50 capable of adjusting an opening degree, and the dust removing system further includes a detection unit configured to monitor an airflow state in each dust suction branch pipe 30.
By using the dust removing system of the present invention, the opening degree of the valve 50 can be controlled according to the detection result of the detection unit, so that each dust suction branch pipe 30 is configured with airflow in a corresponding state, and each dust suction point can obtain a required dust suction effect.
Wherein the opening degree of the corresponding valve 50 may be manually controlled according to the detection result of the detection unit. Preferably, for the convenience of control, the dust removing system includes a control unit 60 for controlling the valve 50, and the control unit 60 is electrically connected with the detection unit to be able to control the valve 50 according to feedback of the detection unit.
Wherein the control unit 60 may set different control strategies depending on the specific form of the detection unit. The air pressure, the air volume, the dust concentration and the like can be used as monitoring parameters for reflecting the air flow state. For this purpose, the detecting units may include a pressure sensor 70, an air volume sensor, a dust concentration detector, and the like, so that the control unit 60 may perform corresponding control according to the comparison result of the air pressure, the air volume, and the dust concentration detected by each detecting unit.
The following description will be given taking an example in which the detection means is used to detect the air pressure, and operations according to the detection results of the air volume and the dust concentration are similar to this, and will not be described in detail here.
In the embodiment shown in fig. 1, the detection unit comprises a pressure sensor 70 for detecting the air pressure in the dust suction branch 30. Therefore, the air pressure in each dust suction branch pipe 30 can be adjusted by controlling the opening of the valve 50 according to the feedback of the pressure sensor 70.
Specifically, the control unit 60 is configured to control the opening of the valve 50 according to the air pressure in the two branch dust suction pipes 30 connected by the communication pipe 40, so that the air pressure in the two branch dust suction pipes 30 is balanced. The pressure balance is a condition of approximately the same pressure, for example, the pressure difference between the air pressures in the two dust suction branch pipes 30 is not greater than a first preset value, wherein the first preset value can be set as required, for example, 10%.
The control unit 60 may control the opening of the valve 50 in a suitable manner. For example, in the case that the valve 50 is closed, when the air pressures in the two branch dust suction pipes 30 connected by the connection pipe 40 do not reach the pressure balance, the valve 50 may be controlled to be gradually opened, and the opening degree may be adjusted in time according to the feedback of the pressure sensor 70 during the opening process until the air pressures in the two branch dust suction pipes 30 reach the pressure balance.
It can be understood that since the branch dust suction pipes 30 are collected in the dust suction duct 20, when dust is sucked from the same foreign matter (for example, dust), the air pressure in the branch dust suction pipes 30 should be kept uniform to ensure uniform effects at different dust suction points.
For this purpose, the control unit 60 may be configured to sequentially control the opening of the plurality of valves 50 until the air pressure in each of the dust suction branch pipes 30 reaches a pressure equilibrium. Specifically, as shown in fig. 1, the first dust suction point D1 and the second dust suction point D2 … … are provided at the nth dust suction point DN, and the control unit 60 may sequentially control the opening degree of each valve 50 from the valve 50 on the communication pipe 40 between the first dust suction point D1 and the second dust suction point D2. Wherein "sequentially" means in sequence on the one hand and may be repeated on the other hand.
More specifically, first, by comparing the air pressures of the two branch dust suction pipes 30 corresponding to the first dust suction point D1 and the second dust suction point D2, in the case that the pressures of the two branch dust suction pipes are unbalanced, the opening degree of the valve 50 on the communication pipe 40 between the two branch dust suction pipes 30 is controlled by the control unit 60, so that the air pressures of the two branch dust suction pipes 30 are balanced; subsequently, comparing the air pressures of the two branch dust suction pipes 30 corresponding to the second dust suction point D2 and the third dust suction point D3 (not shown), in case of unbalanced pressure therebetween, the control unit 60 controls the opening of the valve 50 on the communicating pipe 40 between the two branch dust suction pipes 30, so that the air pressures of the two branch dust suction pipes 30 are balanced; … … comparing the air pressures of the two branch dust-collecting pipes 30 corresponding to the N-1 st dust-collecting point N-1 and the N-1 th dust-collecting point DN (not shown), and controlling the opening of the valve 50 on the communicating pipe 40 between the two branch dust-collecting pipes 30 by the control unit 60 under the condition that the pressures of the two branch dust-collecting pipes 30 are not balanced, so that the air pressures of the two branch dust-collecting pipes 30 are balanced; then, the air pressures in the respective branch pipes 30 need to be compared again, and if the air pressures of any two branch pipes 30 do not reach the pressure balance, the adjustment is needed again.
Preferably, the control unit 60 is configured to: control a plurality of the aperture of valve 50 in proper order for every two that communicating pipe 40 connects after atmospheric pressure in the dust absorption branch pipe 30 reaches pressure balance, compare in proper order again by two that communicating pipe 40 connects atmospheric pressure in the dust absorption branch pipe 30 and adjust as required the aperture of valve 50, until every atmospheric pressure in the dust absorption branch pipe 30 all reaches pressure balance. That is, the air pressures in the two adjacent branch dust pipes 30 (the two branch dust pipes 30 connected by the connection pipe 40) are compared again, and when the air pressures in the two branch dust pipes 30 do not reach the pressure balance, the opening of the valve 50 on the connection pipe 40 of the two branch dust pipes 30 is controlled, so that the air pressures in the two branch dust pipes 30 reach the pressure balance until the air pressures in all the branch dust pipes 30 reach the pressure balance.
In addition, during the dust removal process, the dust suction branch pipe 30 may be out of order due to the clogging of impurities, etc., and the air pressure in the dust suction branch pipe 30 will be directly reflected as a large drop in pressure. Therefore, an abnormal pressure drop in the dust suction branch pipe 30 can be used as a criterion for judging a malfunction. For this purpose, the dust removing system may comprise an alarm unit electrically connected to the control unit 60, and the control unit 60 is configured to control the alarm unit to alarm when the pressure difference between the air pressures in any two of the dust suction branch pipes 30 reaches a second preset value, wherein the second preset value may be set as required, and may be, for example, 30%.
The dust removing device 10 of the present invention can perform dust removal by supplying a suction air flow, for which it is necessary to provide appropriate functional components to supply the suction air flow. Preferably, the dust removing device 10 includes an induced draft fan 11, and the control unit 60 is configured to control the operation of the induced draft fan 11 in order to adjust the state of the suction airflow provided by the induced draft fan 11 according to the actual working condition.
Preferably, the control unit 60 is configured to adjust the valve 50 and/or the induced draft fan 11 so that the air pressure in each dust suction branch 30 reaches a predetermined pressure Δ P. The predetermined pressure Δ P may be set as required, for example, according to the type of the impurities to be sucked and picked up, the specification of the induced draft fan 11, and the like, and may be set to be an optimal pressure for the dust removing system to achieve both the dust suction effect and the energy consumption of the induced draft fan 11.
It will be appreciated that the pressure in the suction manifold 30 up to the predetermined range, i.e. up to the predetermined pressure Δ P, may be used to avoid frequent adjustment of the valve 50 and/or the induced draft fan 11. Preferably, when the air pressure in each of the dust suction branch pipes 30 reaches a pressure equilibrium, the control unit 60 is configured to:
when the air pressure P in the dust collection branch pipe 30 satisfies that P is less than or equal to Δ P, the control unit 60 controls the induced draft fan 11 to increase the air volume until P is less than or equal to Δ P and less than or equal to 1.1 Δ P;
when the air pressure P of the dust collection branch pipe 30 satisfies that P is greater than or equal to 1.1 Δ P, the control unit 60 controls the induced draft fan 11 to reduce the air volume until P is greater than or equal to P and less than or equal to 1.1 Δ P.
Specifically, the opening of the valves 50 may be sequentially controlled as described above until the air pressure in each of the dust suction branch pipes 30 reaches a pressure equilibrium. Then, the air pressure in the dust suction branch pipe 30 corresponding to the first dust removal point D1 may be compared with the predetermined pressure Δ P by the control unit 60.
When atmospheric pressure P in the dust absorption branch pipe 30 satisfies P and is less than or equal to Δ P, the control unit 60 controls the draught fan 11 to gradually increase the air volume, and control a plurality of the opening of the valve 50 in proper order, until every atmospheric pressure in the dust absorption branch pipe 30 all reaches pressure balance, compare the atmospheric pressure in the dust absorption branch pipe 30 that first dust removal point D1 corresponds again with predetermined pressure Δ P afterwards, if atmospheric pressure P in the dust absorption branch pipe 30 still satisfies P and is less than or equal to Δ P, then continue to increase the air volume of the draught fan 11 and control a plurality of the opening of the valve 50 in proper order again, repeat this process until Δ P is less than or equal to P and is less than or equal to 1.1 Δ P.
When the air pressure P of the dust collection branch pipes 30 satisfies that P is greater than or equal to 1.1 Δ P, the control unit 60 controls the induced draft fan 11 to gradually reduce the air volume, and sequentially controls the opening degrees of the plurality of valves 50 until the air pressure in each dust collection branch pipe 30 reaches pressure balance, then compares the air pressure in the dust collection branch pipe 30 corresponding to the first dust removal point D1 with the predetermined pressure Δ P again, and if the air pressure P in the dust collection branch pipe 30 still satisfies that P is greater than or equal to 1.1 Δ P, continues to reduce the air volume of the induced draft fan 11 and sequentially controls the opening degrees of the plurality of valves 50 again, and repeats the process until Δ P is greater than or equal to P and less than or equal to 1.1 Δ P.
In addition, in order to avoid environmental pollution, as shown in fig. 1, the dust removing device 10 may further include a dust remover 12 and a stone dust bin 13, and the dust suction pipeline 20 may convey the merged air flow to the dust remover 12, so that the air flow is guided out from an air outlet of the dust remover 12 through the induced draft fan 11 after being removed by the dust remover 12, so as to discharge clean air to the outside. The solid impurities filtered by the dust collector 12 can be discharged from the solid outlet of the dust collector 12 and collected in the stone dust bin 13.
According to another aspect of the present invention, there is provided a dust removing method, wherein the dust removing method is the dust removing system of the present invention, the method comprising:
s1, monitoring the airflow state of each dust suction branch pipe 30 through the detection unit;
and S2, controlling the opening degree of the valve 50 according to the monitoring result of the detection unit, so that the airflow states of the dust collection branch pipes 30 are consistent.
Wherein, according to the detection result of the detection unit, the opening degree of the valve 50 is controlled, so that each dust suction branch pipe 30 can be configured with corresponding air volume, and each dust suction point can obtain the required dust suction effect.
Wherein the opening degree of the corresponding valve 50 may be manually controlled according to the detection result of the detection unit. Preferably, for the convenience of control, the dust removing system includes a control unit 60 for controlling the valve 50, and the control unit 60 is electrically connected with the detection unit to be able to control the valve 50 according to feedback of the detection unit.
Wherein, different control strategies can be set according to the specific form of the detection unit. The air pressure, the air volume, the dust concentration and the like can be used as monitoring parameters for reflecting the air flow state. For this purpose, the detecting unit may include a pressure sensor 70, an air volume sensor, a dust concentration detector, and the like, so that the detecting unit may perform corresponding control according to the comparison result of the air pressure, the air volume, and the dust concentration detected by each detecting unit.
The following description will be given taking an example in which the detection means is used to detect the air pressure, and operations according to the detection results of the air volume and the dust concentration are similar to this, and will not be described in detail here. Wherein the detection unit includes a pressure sensor 70 for detecting air pressure in the dust suction branch pipe, and step S2 includes:
s21, sequentially controlling the opening of the valves 50 according to the feedback of the pressure sensor 70, so that the air pressure in the two dust collecting branch pipes 30 connected to each of the communicating pipes 40 is balanced;
and S22, sequentially comparing the air pressures in the dust suction branch pipes 30, and continuously adjusting or keeping the opening of the valve 50 according to the comparison result.
Specifically, as shown in fig. 1, the first dust suction point D1 and the second dust suction point D2 … … are provided at the nth dust suction point DN, and the control unit 60 may sequentially control the opening degree of each valve 50 from the valve 50 on the communication pipe 40 between the first dust suction point D1 and the second dust suction point D2. Wherein "sequentially" means in sequence on the one hand and may be repeated on the other hand.
More specifically, in step S21, first, by comparing the air pressures of the two branch dust suction pipes 30 corresponding to the first dust suction point D1 and the second dust suction point D2, in the case that the pressures of the two branch dust suction pipes are unbalanced, the opening degree of the valve 50 on the communicating pipe 40 between the two branch dust suction pipes 30 is controlled so that the air pressures of the two branch dust suction pipes 30 are balanced; subsequently, comparing the air pressures of the two branch dust suction pipes 30 corresponding to the second dust suction point D2 and the third dust suction point D3 (not shown), in the case that the pressures of the two branch dust suction pipes are unbalanced, controlling the opening of the valve 50 on the communicating pipe 40 between the two branch dust suction pipes 30, so that the air pressures of the two branch dust suction pipes 30 are balanced; … … comparing the air pressures of the two branch pipes 30 corresponding to the N-1 st and N-1 nd suction points N-1 and DN (not shown), and controlling the opening of the valve 50 on the connection pipe 40 between the two branch pipes 30 when the pressures are not balanced, so that the air pressures of the two branch pipes 30 are balanced.
Then, in step S22, the air pressures in the respective branch dust pipes 30 need to be compared again, and if the air pressures in any two branch dust pipes 30 do not reach the pressure balance, the adjustment needs to be performed again. That is, step S22 includes: when the air pressures in any two of the dust collecting branch pipes 30 do not reach the pressure balance, repeating the step S21 to continuously adjust the opening degree of the valve 50; when the air pressure in each branch suction pipe 30 reaches a pressure equilibrium, the opening degree of the valve 50 is maintained.
Specifically, in order to determine whether there is a situation that the air pressures in any two of the branch dust suction pipes 30 do not reach the pressure balance, the air pressures in the two branch dust suction pipes 30 connected by the connection pipe 40 may be sequentially compared again, and the opening of the valve 50 may be adjusted as needed until the air pressures in each of the branch dust suction pipes 30 reach the pressure balance. That is, the air pressures in the two adjacent branch dust pipes 30 (the two branch dust pipes 30 connected by the connection pipe 40) are sequentially compared again, and when the air pressures in the two branch dust pipes 30 do not reach the pressure balance, the opening of the valve 50 on the connection pipe 40 of the two branch dust pipes 30 is controlled, so that the air pressures in the two branch dust pipes 30 reach the pressure balance, that is, the step S21 is repeated until the air pressures in all the branch dust pipes 30 reach the pressure balance.
Furthermore, the dust removing device 10 comprises an induced draft fan 11 to provide a suction air flow. The method comprises adjusting the valve 50 and/or the induced draft fan 11 to make the air pressure in each dust suction branch pipe 30 reach a preset pressure delta P. The predetermined pressure Δ P may be set as required, for example, according to the type of the impurities to be sucked and picked up, the specification of the induced draft fan 11, and the like, and may be set to be an optimal pressure for the dust removing system to achieve both the dust suction effect and the energy consumption of the induced draft fan 11.
It will be appreciated that the pressure in the suction manifold 30 up to the predetermined range, i.e. up to the predetermined pressure Δ P, may be used to avoid frequent adjustment of the valve 50 and/or the induced draft fan 11. Preferably, when the air pressure in each of the dust suction branch pipes 30 reaches a pressure equilibrium:
when the air pressure P in the dust collection branch pipe 30 meets the condition that P is less than or equal to delta P, the air quantity of the induced draft fan 11 is increased until P is less than or equal to 1.1 delta P;
when the air pressure P of the dust collection branch pipe 30 meets the condition that P is more than or equal to 1.1 delta P, the air quantity of the induced draft fan 11 is reduced until P is more than or equal to P and less than or equal to 1.1 delta P.
Specifically, the opening of the valves 50 may be sequentially controlled as described above until the air pressure in each of the dust suction branch pipes 30 reaches a pressure equilibrium. Then, the air pressure in the dust suction branch pipe 30 corresponding to the first dust removal point D1 may be compared with the predetermined pressure Δ P.
When atmospheric pressure P in the dust absorption branch pipe 30 satisfies P and is less than or equal to Δ P, control draught fan 11 and increase the amount of wind gradually, and control a plurality ofly in proper order the aperture of valve 50, until every atmospheric pressure in the dust absorption branch pipe 30 all reaches pressure balance, compare atmospheric pressure and predetermined pressure Δ P in the dust absorption branch pipe 30 that first dust removal point D1 corresponds again afterwards, if atmospheric pressure P in the dust absorption branch pipe 30 still satisfies P and is less than or equal to Δ P, then continue to increase the amount of wind of draught fan 11 and control a plurality ofly again in proper order the aperture of valve 50, repeat this process until Δ P is less than or equal to P and is less than or equal to 1.1 Δ P.
When the air pressure P of the dust collection branch pipes 30 meets the condition that P is larger than or equal to 1.1 delta P, controlling the induced draft fan 11 to gradually reduce the air volume, and sequentially controlling the opening degrees of the valves 50 until the air pressure in each dust collection branch pipe 30 reaches pressure balance, then comparing the air pressure in the dust collection branch pipe 30 corresponding to the first dust removal point D1 with the preset pressure delta P again, if the air pressure P in the dust collection branch pipe 30 still meets the condition that P is larger than or equal to 1.1 delta P, continuously reducing the air volume of the induced draft fan 11, sequentially controlling the opening degrees of the valves 50 again, and repeating the process until P is larger than or equal to P and smaller than or equal to 1.1 delta P.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. The invention includes the combination of the individual features in any suitable manner. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (15)
1. The utility model provides a dust pelletizing system, characterized in that, dust pelletizing system includes dust collector (10), dust absorption pipeline (20) and is used for a plurality of dust absorption branch pipes (30) of a plurality of suction points respectively, dust absorption pipeline (20) are used for through the suction air current that dust collector (10) provided will be from a plurality of the impurity that dust absorption branch pipe (30) were inhaled and are picked up gathers and carry to dust collector (10), and a plurality of dust absorption branch pipe (30) loop through two liang of intercommunications in a plurality of communicating pipes (40), every communicating pipe (40) are provided with valve (50) that can adjust the aperture, dust pelletizing system still including being used for monitoring every the detecting element of the air current state in dust absorption branch pipe (30).
2. A dusting system according to claim 1, characterized in that the dusting system comprises a control unit (60) for controlling the valve (50), the control unit (60) being electrically connected with the detection unit to enable control of the valve (50) in dependence of feedback from the detection unit.
3. A dusting system according to claim 2, characterized in that said detection unit comprises a pressure sensor (70) for detecting the air pressure in the dust suction branch (30).
4. A dusting system according to claim 3, characterized in that said control unit (60) is arranged to control the opening of said valve (50) in dependence of the air pressure in the two dust collecting branch pipes (30) connected by said communicating pipe (40) to pressure balance the air pressure in the two dust collecting branch pipes (30).
5. A dusting system according to claim 4, characterized in that said control unit (60) is arranged to control the opening of a number of said valves (50) in turn until the air pressure in each of said dust extraction branches (30) reaches a pressure equilibrium.
6. A dusting system according to claim 5, characterized in that the control unit (60) is arranged to: control a plurality of the aperture of valve (50) in proper order for every two of communicating pipe (40) are connected atmospheric pressure in dust absorption branch pipe (30) reaches pressure balance back, compares in proper order again by two of communicating pipe (40) are connected atmospheric pressure in dust absorption branch pipe (30) and adjust as required the aperture of valve (50) is up to every atmospheric pressure in dust absorption branch pipe (30) all reaches pressure balance.
7. A dusting system according to any of the claims 4-6, characterized in that the pressure balance is such that the pressure difference of the air pressure in both dust suction branches (30) is not larger than a first preset value; and/or the dust removal system comprises an alarm unit electrically connected with the control unit (60), and the control unit (60) is set to control the alarm unit to alarm when the pressure difference of the air pressure in any two dust suction branch pipes (30) reaches a second preset value.
8. A dust extraction system according to any one of claims 2 to 6, wherein the dust extraction device (10) comprises an induced draft fan (11), the induced draft fan (11) being in communication with the dust extraction duct (20), the control unit (60) being capable of controlling the operation of the induced draft fan (11).
9. A dusting system according to claim 8, characterized in that the control unit (60) is arranged to bring the air pressure in each dust suction branch (30) to a predetermined pressure Δ P by adjusting the valve (50) and/or the induced draft fan (11).
10. A dusting system according to claim 9, characterized in that, when the air pressure in each dust suction branch (30) reaches a pressure equilibrium, the control unit (60) is arranged to:
when the air pressure P in the dust collection branch pipe (30) meets the condition that P is less than or equal to delta P, the control unit (60) controls the induced draft fan (11) to increase the air volume until P is less than or equal to 1.1 delta P;
when the air pressure P of the dust collection branch pipe (30) meets the condition that P is more than or equal to 1.1 delta P, the control unit (60) controls the induced draft fan (11) to reduce the air volume until P is more than or equal to P and less than or equal to 1.1 delta P.
11. A dust removing method using the dust removing system according to claim 1, the method comprising:
s1, monitoring the airflow state of each dust suction branch pipe (30) through the detection unit;
and S2, controlling the opening degree of the valve (50) according to the monitoring result of the detection unit, so that the airflow states of the dust collection branch pipes (30) are consistent.
12. The dust removing method according to claim 11, wherein the detecting unit includes a pressure sensor (70) for detecting air pressure in the dust suction branch, and step S2 includes:
s21, sequentially controlling the opening of the valves (50) according to the feedback of the pressure sensor (70) so that the air pressure in the two dust absorption branch pipes (30) connected with each communicating pipe (40) reaches pressure balance;
s22, sequentially comparing the air pressure in the dust suction branch pipes (30), and continuously adjusting or keeping the opening of the valve (50) according to the comparison result.
13. The dust removal method according to claim 12, wherein step S22 includes:
when the air pressures in any two of the dust suction branch pipes (30) do not reach the pressure balance, the step S21 is repeated to continuously adjust the opening degree of the valve (50);
when the air pressure in each branch dust suction pipe (30) reaches the pressure balance, the opening degree of the valve (50) is kept.
14. A method as claimed in claim 12 or 13, wherein the dust extraction device (10) comprises an induced draft fan (11), the method comprising adjusting the valve (50) and/or the induced draft fan (11) so that the air pressure in each dust extraction branch (30) reaches a predetermined pressure Δ Ρ.
15. A method for removing dust according to claim 14, wherein, when the air pressure in each of the dust suction branch pipes (30) reaches a pressure equilibrium:
when the air pressure P in the dust collection branch pipe (30) meets the condition that P is less than or equal to delta P, the draught fan (11) is enabled to increase the air volume until P is less than or equal to delta P and less than or equal to 1.1 delta P;
when the air pressure P of the dust collection branch pipe (30) meets the condition that P is more than or equal to 1.1 delta P, the air quantity of the draught fan (11) is reduced until P is more than or equal to 1.1 delta P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559471.1A CN111632442A (en) | 2020-06-18 | 2020-06-18 | Dust removal system and dust removal method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559471.1A CN111632442A (en) | 2020-06-18 | 2020-06-18 | Dust removal system and dust removal method |
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| CN111632442A true CN111632442A (en) | 2020-09-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114290421A (en) * | 2021-12-20 | 2022-04-08 | 珠海格力智能装备有限公司 | Automatic control method and device for dust collection pipeline of drilling machine |
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2020
- 2020-06-18 CN CN202010559471.1A patent/CN111632442A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114290421A (en) * | 2021-12-20 | 2022-04-08 | 珠海格力智能装备有限公司 | Automatic control method and device for dust collection pipeline of drilling machine |
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