CN222918299U - Bag dust removal device with dust cleaning function - Google Patents

Abstract

The utility model relates to the technical field of bag-type dust removal, and provides a bag-type dust removal device with a dust removal function, which comprises a dust removal box, wherein a plurality of dust removal chambers are constructed in the dust removal box, each dust removal chamber is provided with a dust removal unit, the lower part of each dust removal chamber is communicated with an air inlet pipeline, a first control valve is arranged on the air inlet pipeline, the upper part of each dust removal chamber is connected with an air outlet pipeline, and the air outlet pipeline is communicated with the dust removal unit; each dust removal bin is provided with an ash removal component, the ash removal component comprises an ash removal pipe and a second control valve arranged on the ash removal pipe, the ash removal pipe is connected with the upper end of the dust removal unit, and the second end of the ash removal pipe is connected with an external air source. The dust removing box is internally provided with the plurality of dust removing chambers, dust can be removed from the corresponding dust removing units in one or more of the dust removing chambers, and the corresponding dust removing units in the rest dust removing chambers can remove dust normally, so that shutdown is not needed in the dust removing process of the dust removing units, and further the working efficiency is improved.

Description

Cloth bag dust collector with deashing function

Technical Field

The utility model relates to the technical field of bag-type dust removal, in particular to a bag-type dust removal device with a dust removal function.

Background

The technology with the highest dust removal efficiency in the industries of iron and steel, metallurgy, coking and thermal power plants at present is cloth bag dust removal, so that the application is the most widely. The bag-type dust removal adopts a bag-type dust removal method, and the denitration flue gas enters a bag-type dust remover for dust removal treatment after heat exchange of an economizer (the flue gas temperature is 100-160 ℃). The bag type dust collector is a dry dust filtering device, is suitable for capturing fine, dry and non-fibrous dust, a filter bag is made of woven filter cloth or non-woven felt, dust-containing gas is filtered by utilizing the filtering effect of the fiber fabric, and when the dust-containing gas enters the bag type dust collector, the dust with large particles and large specific gravity falls down due to the action of gravity and falls into a dust hopper, and when the gas containing the fine dust passes through the filter material, the dust is blocked, so that the gas is purified.

In the prior art, after the bag-type dust collector is used for a period of time, a filter bag of the dust collector is blocked by dust, the dust collector needs to be opened to take down the filter bag for cleaning, the cleaning process is complicated, labor is consumed, and the bag-type dust collector needs to be stopped, so that the working efficiency is affected.

Disclosure of utility model

The utility model provides a cloth bag dust collector with a dust removing function, which is used for solving the defects that the cleaning process of a filter bag of a dust collector is complicated and the working efficiency is affected by shutdown in the prior art.

The utility model provides a cloth bag dust collector with ash removal function, comprising:

the dust removing box is internally provided with a plurality of dust removing cabins which are arranged side by side, each dust removing cabin is provided with a dust removing unit, the lower part of each dust removing cabin is communicated with an air inlet pipeline, the air inlet pipeline is provided with a first control valve, the upper part of each dust removing cabin is connected with an air outlet pipeline, and the air outlet pipeline is communicated with the dust removing unit;

Each dust removal bin is provided with a dust removal assembly, the dust removal assembly comprises a dust removal pipe and a second control valve arranged on the dust removal pipe, a first end of the dust removal pipe is connected with the upper end of the dust removal unit, and a second end of the dust removal pipe is connected with an external air source.

According to the cloth bag dust collector with the dust removing function, the dust removing box is provided with the air inlet and the air outlet, the air inlet is communicated with all the air inlet pipelines, and the air outlet is communicated with all the air outlet pipelines;

A differential pressure measuring element is arranged between the air inlet and the air outlet.

According to the cloth bag dust removing device with the dust removing function, the pressure difference measuring element is electrically connected with the controller, and the controller is electrically connected with the alarm.

According to the cloth bag dust removing device with the dust removing function, the controller is electrically connected with the first control valve and the second control valve.

According to the cloth bag dust removing device with the dust removing function, the first control valve is electrically connected with the switch in-place feedback piece, and the switch in-place feedback piece is used for monitoring the working state of the first control valve.

According to the cloth bag dust collector with the dust removing function, the dust removing unit comprises a plurality of dust removing cloth bags arranged in the dust removing bin, and each dust removing cloth bag is connected with the dust removing component.

According to the cloth bag dust removing device with the dust removing function, which is provided by the embodiment of the utility model, the second control valve is a pulse valve.

According to the cloth bag dust removing device with the dust removing function, all pulse valves on each dust removing bin are arranged on a steam drum.

According to the cloth bag dust removing device with the dust removing function, all pulse valves on each dust removing bin are electrically connected with a pulse controller.

According to the cloth bag dust collector with the dust removing function, provided by the embodiment of the utility model, the lower part of the dust collection box is provided with the air inlet channel, the first end of the air inlet channel is communicated with the air inlet, and the second end of the air inlet channel is respectively communicated with all air inlet pipelines;

The upper portion of the dust removal box is provided with an air outlet channel, a first end of the air outlet channel is communicated with the air outlet, and a second end of the air outlet channel is respectively communicated with the air outlet pipeline.

The cloth bag dust removing device with the dust removing function provided by the embodiment of the utility model isolates dust-containing gas in the dust removing chambers through the first control valve, removes dust from the dust removing units through the dust removing assembly, and is internally provided with a plurality of dust removing chambers, so that dust can be removed from the corresponding dust removing units in one or more dust removing chambers, and the corresponding dust removing units in the rest dust removing chambers can remove dust normally, thereby avoiding shutdown in the dust removing process of one or more dust removing units and further improving the working efficiency.

Drawings

In order to more clearly illustrate the utility model or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a bag-type dust collector with ash removal function according to an embodiment of the present utility model;

Fig. 2 is a schematic layout structure diagram of a bag-type dust collector with ash removal function according to an embodiment of the present utility model;

Fig. 3 is a schematic diagram of an external structure of a bag-type dust collector with ash removal function according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of an internal structure of a bag-type dust collector with ash removal function according to an embodiment of the present utility model;

fig. 5 is a schematic view of a partial enlarged structure at a in fig. 4 according to an embodiment of the present utility model.

Reference numerals:

1. Dust removal boxes, 101 # dust removal chambers, 1# dust removal chambers, 102 # dust removal chambers, 2# dust removal chambers, 103 # dust removal chambers, 3# dust removal chambers, 104 # dust removal chambers, 4# dust removal chambers, 105 # dust removal chambers, 5# dust removal chambers, 106 # dust removal chambers and 6# dust removal chambers;

12. The device comprises an air inlet, an air outlet, 14, an air inlet channel, 15 and an air outlet channel;

201. No. 1 dust removing unit, no. 202 and No. 2 dust removing unit, no. 203 and No. 3 dust removing unit, no. 204 and No. 4 dust removing unit, no. 205 and No. 5 dust removing unit, and No. 206 and No. 6 dust removing unit;

21. A dust removing cloth bag;

301. First control valve # 1, first control valve # 302, first control valve # 2, first control valve # 303, first control valve # 3, first control valve # 304, first control valve # 4, first control valve # 305, first control valve # 5, first control valve # 306, first control valve # 6;

41. Ash removal pipe, 421, 1# second control valve, 422, 2# second control valve, 423, 3# second control valve, 424, 4# second control valve, 425, 5# second control valve, 426, 6# second control valve, 43, steam drum, 44, pulse controller;

5. Differential pressure measuring element.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected," "connected," and "coupled" should be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The bag-type dust collector with ash removal function according to the embodiment of the present utility model is described below with reference to fig. 1 to 5.

The embodiment of the utility model provides a cloth bag dust collector with a dust removing function, which is shown in fig. 1 to 4, and comprises a dust removing box 1, dust removing units, first control valves and dust removing components, wherein a plurality of dust removing cabins are arranged in parallel in the dust removing box 1, each dust removing cabin is provided with a dust removing unit, the lower part of each dust removing cabin is communicated with an air inlet pipeline, the air inlet pipeline is provided with the first control valve, the upper part of each dust removing cabin is connected with an air outlet pipeline, the air outlet pipeline is communicated with the dust removing unit, each dust removing cabin is provided with the dust removing components, the dust removing components are used for removing dust from the dust removing units, each dust removing component comprises a dust removing pipe 41 and a second control valve, the first end of the dust removing pipe 41 is connected with the upper end of the dust removing unit, the second end of the dust removing pipe 41 is connected with an external air source, and the dust removing pipe 41 is provided with the second control valve.

It can be understood that the dust collection box 1 is internally provided with a plurality of dust collection chambers, the number of the dust collection units, the first control valves and the ash removal components are all matched with the number of the dust collection chambers, and the number of the dust collection units, the first control valves and the ash removal components is six and corresponds to the number of the dust collection chambers one by one in this embodiment.

It can be understood that the lower part intercommunication of every dust removal bin has the air inlet pipeline, is provided with dust removal unit in the dust removal bin, and the upper portion of every dust removal bin is connected with the pipeline of giving vent to anger, then the dust-laden gas gets into the dust removal bin inside through the air inlet pipeline, and dust removal unit filters the dust-laden gas, and clean gas after the filtration is located dust removal unit inside to discharge through the pipeline of giving vent to anger, thereby realize the filtration of dust-laden gas.

It will be appreciated that, after the bag-type dust collector of the present embodiment is used for a period of time, the dust collection bag 21 of the dust collection unit is blocked by dust, the first control valve on the air inlet pipe is closed, and the second control valve on the dust removal pipe 41 is opened to remove dust from the dust collection bag 21 of the corresponding dust collection unit.

It will be appreciated that the first control valve is used to isolate the dust laden gas from entering the corresponding dust removal bin and the second control valve is used to clean the dust removal cloth bag 21 of the dust removal unit. The cloth bag dust collector of the embodiment has the working state that the first control valve is in an open state and the second control valve is in a closed state when dust is removed, and the first control valve is in a closed state and the second control valve is in an open state when dust is removed.

The dust collection box 1 is internally provided with a plurality of dust collection chambers, and dust collection units corresponding to one or more dust collection chambers can be subjected to dust collection treatment.

The cloth bag dust collector with the dust removing function provided by the embodiment of the utility model isolates dust-containing gas in the dust removing chambers through the first control valve, removes dust from the dust removing units through the dust removing assembly, has simpler dust removing process, and is characterized in that a plurality of dust removing chambers are constructed in the dust removing box 1, the dust removing units corresponding to one or more dust removing chambers can be removed, and the dust removing units corresponding to the rest dust removing chambers can be removed normally, so that shutdown is not needed in the dust removing process of one or more dust removing units, and the working efficiency is improved.

In the embodiment of the present utility model, as shown in fig. 4, the dust removing box 1 is provided with an air inlet 12 and an air outlet 13, the air inlet 12 being in communication with all the air inlet pipes, and the air outlet 13 being in communication with all the air outlet pipes.

It can be understood that the lower part of the dust removal box 1 is provided with an air inlet channel 14, a first end of the air inlet channel 14 is communicated with the air inlet 12, a second end of the air inlet channel 14 is respectively communicated with all air inlet pipelines, the upper part of the dust removal box 1 is provided with an air outlet channel 15, a first end of the air outlet channel 15 is communicated with the air outlet 13, and a second end of the air outlet channel 15 is respectively communicated with the air outlet pipelines.

It is understood that the air inlet pipeline communicates with the dust removing chamber and the pipeline of the air inlet channel 14, and the first control valve is disposed on the air inlet channel 14. The air outlet channel 15 is a pipeline which is communicated with the inner cavity of the dust removing cloth bag 21 of the dust removing unit and the air outlet channel 15.

In the embodiment of the present utility model, a differential pressure measuring element 5 is provided between the air inlet 12 and the air outlet 13, and the differential pressure measuring element 5 is used for measuring the differential pressure between the air inlet 12 and the air outlet 13 of the dust removing box 1, and judging whether the dust removing unit needs to be cleaned or not based on the differential pressure value.

It can be understood that whether to open the ash cleaning is determined according to the measured differential pressure value measured by the differential pressure measuring element 5, which specifically includes the following contents:

Comparing the measured differential pressure value with a preset value;

When the measured differential pressure value is larger than or equal to a preset value, the differential pressure between the air inlet 12 and the air outlet 13 of the dust removal box 1 is larger, more dust is on the dust removal unit, the dust removal operation is started, and then the first control valve is closed and the second control valve is opened to remove dust from the dust removal unit;

When the measured differential pressure value is smaller than the preset value, the differential pressure between the air inlet 12 and the air outlet 13 of the dust removal box 1 is in a proper range, dust on the dust removal unit is less, the dust removal operation of the dust removal unit cannot be influenced, the first control valve is continuously in an open state, and the second control valve is in a closed state.

It should be noted that, the dust collection box 1 is internally configured with a plurality of dust collection chambers, and each dust collection chamber is internally provided with a dust collection unit, so that when the measured differential pressure value is greater than or equal to a preset value, the plurality of dust collection units are sequentially cleaned, and the corresponding first control valves are closed and the second control valves are sequentially opened.

As illustrated in fig. 1 to 4, six dust removal chambers are configured in the dust removal box 1, the six dust removal chambers are respectively and sequentially arranged in parallel, namely, a 1# dust removal chamber 101, a 2# dust removal chamber 102, a 3# dust removal chamber 103, a 4# dust removal chamber 104, a 5# dust removal chamber 105 and a 6# dust removal chamber 106, the six dust removal chambers are respectively and internally provided with a 1# dust removal unit 201, a 2# dust removal unit 202, a 3# dust removal unit 203, a 4# dust removal unit 204, a 5# dust removal unit 205 and a 6# dust removal unit 206, and the second control valves matched with the six dust removal units are respectively provided with a 1# second control valve 421, a 2# second control valve 422, a 3# second control valve 423, a 4# second control valve 424, a 5# second control valve 425 and a 6# second control valve 426, and the first control valves matched with the six dust removal chambers are respectively provided with a 1# first control valve 301, a 2# first control valve 302, a 3# first control valve 303, a 4# first control valve 304, a 5# first control valve 305 and a 6# first control valve 306.

When the measured differential pressure value measured by the differential pressure measuring element 5 is larger than a preset value, firstly closing the 1# first control valve 301 and opening the 1# second control valve 421 to clean the 1# dust removing unit 201, and completing the dust cleaning of the 1# dust removing unit 201;

The first control valve 301 of # 1 is opened, the second control valve 421 of # 1 is closed, the dust removing unit 201 of # 1 is switched to a dust removing working state, the first control valve 302 of # 2 is closed, the second control valve 422 of # 2 is opened, the dust removing unit 202 of # 2 is removed, and the dust removing unit 202 of # 2 is completed;

The first control valve 302 of # 2 is opened, the second control valve 422 of # 2 is closed, the dust removing unit 202 of # 2 is switched to a dust removing working state, the first control valve 303 of # 3 is closed, the second control valve 423 of # 3 is opened, the dust removing unit 203 of # 3 is removed, and the dust removing unit 203 of # 3 is completed;

Opening the first control valve 303 of the No. 3 and closing the second control valve 423 of the No. 3 to switch the dust removing unit 203 to a dust removing working state, closing the first control valve 304 of the No. 4 and opening the second control valve 424 of the No. 4 to remove dust from the dust removing unit 204 of the No. 4, and completing dust removing of the dust removing unit 204 of the No. 4;

Opening the first control valve 304 of the No. 4 and closing the second control valve 424 of the No. 4, so that the dust removing unit 204 of the No. 4 is switched to a dust removing working state, closing the first control valve 305 of the No. 5 and opening the second control valve 425 of the No. 5 to remove dust from the dust removing unit 205 of the No. 5, and completing dust removing of the dust removing unit 205 of the No. 5;

The first control valve 305 of # 5 is opened and the second control valve 425 of # 5 is closed, so that the dust removal unit 205 is switched to a dust removal working state, the first control valve 306 of # 6 is closed and the second control valve 426 of # 6 is opened to remove dust from the dust removal unit 206 of # 6, the dust removal of the dust removal unit 206 of # 6 is completed, and then the first control valve 306 of # 6 is opened and the second control valve 426 of # 6 is closed, so that the dust removal unit 206 of # 6 is switched to a dust removal working state.

In general, the bag-type dust collector should be in a dust collecting working state, i.e., all the first control valves are in an open state and the second control valves are in a closed state, and only when the dust removal is needed, the first control valves and the second control valves are switched to remove the dust.

In one embodiment of the present utility model, the differential pressure measuring element 5 is electrically connected to a controller, and the controller is electrically connected to an alarm.

It can be understood that the controller obtains the measured differential pressure value measured by the differential pressure measuring element 5, and when the measured differential pressure value is greater than or equal to a preset value, the controller sends a trigger signal to the alarm, and the alarm gives an alarm to remind the dust removal operation of the dust removal unit.

In this embodiment, the differential pressure measuring element 5 may be a differential pressure transmitter, and is integrated into the control box, and is automatically controlled by PLC integration.

In one embodiment of the present utility model, the controller is electrically connected to the first control valve and the second control valve.

It can be understood that the actions of the first control valve and the second control valve are automatically controlled by the controller so as to realize the automation of ash removal.

It can be understood that the controller can circularly spray the dust removing unit according to the timing control set time so as to realize periodic dust removal.

According to the cloth bag dust removing device with the dust removing function, provided by the embodiment of the utility model, on the basis of not increasing the cost of extra equipment, the problem of high differential pressure alarm caused by untimely dust hanging cleaning of the dust removing cloth bag 21 of the dust removing unit is more stably solved, meanwhile, the automatic control is realized, the material cost of the equipment is reduced, the overhaul operation cost is reduced, and the effects of reducing the cost and enhancing the efficiency are achieved.

In one embodiment of the present utility model, the first control valve is electrically connected to a switch in-place feedback member for monitoring the working state of the first control valve.

It can be understood that the first control valve is an off-line ash removal valve, each off-line ash removal valve is provided with a switch in-place feedback piece, the current working state of the off-line ash removal valve can be effectively reflected through the switch in-place feedback piece, and the off-line ash removal valve can isolate dust-containing gas, such as flue gas, of a corresponding dust removal bin after being closed.

In one embodiment of the present utility model, the dust removing unit includes a plurality of dust removing cloth bags 21 disposed in the dust removing chamber, and each dust removing cloth bag 21 is connected with a dust removing pipe 41.

It will be appreciated that, as shown in fig. 4, each dust removing unit includes a plurality of dust removing bags 21 arranged side by side, and each dust removing bag 21 needs to be cleaned, then each dust removing bag 21 is connected with cleaning dust, and a second control valve is provided on each dust removing pipe 41.

For example, as shown in fig. 4 and fig. 5, taking the 1# dust removing unit 201 as an example, the 1# dust removing unit 201 includes ten dust removing bags 21, then ten dust removing bags 21 are disposed in the 1# dust removing chamber 101, and the corresponding ash cleaning pipes and 1# second control valves of the 1# ash cleaning component are ten, and the ten 1# second control valves 421 are respectively and correspondingly connected with the ten dust removing bags 21, so that when the dust removing bags 21 are cleaned, the ten 1# second control valves 421 are sequentially opened, thereby sequentially cleaning the ten dust removing bags 21.

It should be noted that, when each ash cleaning tube 41 is used for cleaning one dust removing cloth bag 21, the number of ash cleaning tubes 41 of the ash cleaning assembly corresponds to the number of dust removing cloth bags 21, and each ash cleaning tube 41 is provided with a second control valve, and the number of ash cleaning tubes 41 and the second control valves of each ash cleaning assembly corresponds to the number of dust removing cloth bags 21 of the corresponding dust removing unit.

According to the cloth bag dust collector with the dust removing function, provided by the embodiment of the utility model, dust attached to the dust collecting cloth bag 21 is shaken off in time through the dust collecting unit, so that the problems that excessive dust and smooth and unsmooth flue gas cause that the differential pressure of the dust collector is increased to influence the dust collecting efficiency are prevented.

Further, the second control valves are pulse valves, and all the second control valves corresponding to each dust removing unit are installed on the steam drum 43.

Further, all pulse valves on each dust removal bin are electrically connected to a pulse controller 44.

It will be appreciated that all pulse valves for each dust removal unit are mounted on the drum 43 and wired centrally to the pulse controller 44, the pulse controller 44 being adjustable in pulse width and interval time.

It should be noted that, the pulse width is the power-on time of the pulse valve, that is, the pulse width is adjusted by the pulse controller 44, so that the working time of the pulse valve, that is, the ash removal time of the dust removal cloth bag 21, can be adjusted.

It should be noted that, when the plurality of dust collecting bags 21 of each dust collecting unit are sequentially cleaned, the interval time is adjusted by the pulse controller 44, so that the interval time of two adjacent pulse valves, that is, the interval time of cleaning the dust collecting bags 21, can be adjusted.

It will be appreciated that the pulse controller 44 may be in communication with a PLC through which the operating state of the pulse controller 44 is read.

In the following, a specific embodiment of the present utility model will be described with reference to fig. 1 to 5, where the bag-type dust collector with dust removing function includes a dust removing box 1, a dust removing unit, a first control valve and a dust removing component, the dust removing unit is disposed in a dust removing chamber in the dust removing box 1, the first control valve is communicated with the dust removing chamber, the dust removing component is connected with the dust removing unit, and the dust removing component is used for removing dust from the dust removing unit.

The dust removal case 1 of this embodiment is constructed with six dust removal bins of arranging side by side inside, and corresponding dust removal unit, first control valve and deashing subassembly are six.

The six dust removal chambers are respectively and sequentially arranged in parallel and in a No. 1 dust removal chamber 101, a No. 2 dust removal chamber 102, a No. 3 dust removal chamber 103, a No. 4 dust removal chamber 104, a No. 5 dust removal chamber 105 and a No. 6 dust removal chamber 106.

The six dust removing units are respectively a 1# dust removing unit 201, a 2# dust removing unit 202, a 3# dust removing unit 203, a 4# dust removing unit 204, a 5# dust removing unit 205 and a 6# dust removing unit 206, and each dust removing unit is provided with ten dust removing cloth bags 21.

The first control valves are off-line ash removal valves, and the six first control valves are respectively a 1# off-line ash removal valve, a 2# off-line ash removal valve, a 3# off-line ash removal valve, a 4# off-line ash removal valve, a 5# off-line ash removal valve and a 6# off-line ash removal valve.

The six ash cleaning components are respectively a 1# ash cleaning component, a 2# ash cleaning component, a 3# ash cleaning component, a 4# ash cleaning component, a 5# ash cleaning component and a 6# ash cleaning component, each ash cleaning component comprises ten ash cleaning pipes 41 and ten second control valves which are correspondingly arranged on the ash cleaning pipes 41, the second control valves are pulse valves, the corresponding 1# ash cleaning component comprises a 1# ash cleaning pipe and a 1# pulse valve which is arranged on the 1# ash cleaning pipe, the ten 1# pulse valves are arranged on a steam drum 43 and are connected to the 1# pulse controller 44 in a centralized way, the 2# ash cleaning component comprises a 2# ash cleaning pipe and a 2# pulse valve which is arranged on the 2# ash cleaning pipe, the ten 2# pulse valves are arranged on the steam drum 43 and are connected to the 2# pulse controller 44 in a centralized way, the 3# ash cleaning component comprises a 3# ash cleaning pipe and a 3# pulse valve which is arranged on the 3# ash cleaning pipe, ten 3# pulse valves are mounted on the steam drum 43 and are centrally connected to the 3# pulse controller 44, the 4# ash removal assembly comprises a 4# ash removal pipe and a 4# pulse valve arranged on the 4# ash removal pipe, ten 4# pulse valves are mounted on the steam drum 43 and are centrally connected to the 4# pulse controller 44, the 5# ash removal assembly comprises a 5# ash removal pipe and a 5# pulse valve arranged on the 5# ash removal pipe, ten 5# pulse valves are mounted on the steam drum 43 and are centrally connected to the 5# pulse controller 44, the 6# ash removal assembly comprises a 6# ash removal pipe and a 6# pulse valve arranged on the 6# ash removal pipe, ten 6# pulse valves are mounted on the steam drum 43 and are centrally connected to the 6# pulse controller 44;

the cloth bag dust collector with the ash removal function of the utility model uses the principle:

When the measured differential pressure value measured by the differential pressure measuring element 5 is greater than or equal to a preset value, the controller sends a trigger signal to the alarm, the alarm gives an alarm, so that the bag-type dust collector generates a differential pressure alarm condition, the 1# offline dust removing valve is closed firstly, the 1# pulse valve is opened to remove dust from the 1# dust removing unit 201, the dust removing of the 1# dust removing unit 201 is completed, and then the dust removing of the 2# dust removing units 202 to 206 is sequentially carried out.

When the bag-type dust removing device does not generate a differential pressure alarm condition, namely, the measured differential pressure value measured by the differential pressure measuring element 5 is smaller than a preset value, the dust removing of the No. 1 dust removing units 201 to the No. 6 dust removing units 206 is sequentially carried out at regular time according to the set interval time in normal operation.

If the differential pressure alarm is not triggered, the time-cycle blowing is set according to timing control so as to execute the ash cleaning, and the two modes are controlled to be respectively timing and constant pressure, wherein the timing is the time-cycle blowing according to the timing control, and the constant pressure is the measured differential pressure value measured by the differential pressure measuring element 5 and triggers the alarm, wherein the differential pressure alarm has priority.

Specifically, the ash removal control sequences of the # 1 dust removal units 201 to the # 6 dust removal unit 206 are as follows:

s1, closing a 1# off-line ash removal valve;

S2, powering on the 1# pulse controller 44, sequentially opening ten 1# pulse valves, and sequentially cleaning the ten dust collection cloth bags 21 of the 1# dust collection unit 201;

S3, after the operation of the 1# pulse controller 44 is finished, opening a 1# off-line ash removal valve, and after 5S (time is adjustable);

S4, closing a No. 2 off-line ash removal valve;

s5, powering up the 2# pulse controller 44, sequentially opening ten 2# pulse valves, and sequentially cleaning ash of ten dust collection cloth bags 21 of the 2# dust collection unit 202;

S6, after the operation of the No. 2 pulse controller 44 is finished, opening a No. 2 off-line ash removal valve, and after 5S (time is adjustable);

S7, closing a 3# off-line ash removal valve;

S8, powering up the 3# pulse controller 44, sequentially opening ten 3# pulse valves, and sequentially cleaning ash of ten dust collection cloth bags 21 of the 3# dust collection unit 203;

S9, after the operation of the 3# pulse controller 44 is finished, opening a 3# off-line ash removal valve, and after 5S (time is adjustable);

S10, closing a No. 4 off-line ash removal valve;

s11, powering on a 4# pulse controller 44, sequentially opening ten 4# pulse valves, and sequentially cleaning ash of ten dust collection cloth bags 21 of a 4# dust collection unit 204;

After the operation of the S12 and 4# pulse controller 44 is finished, opening a 4# off-line ash removal valve and 5S (time is adjustable);

S13, closing a No. 5 off-line ash removal valve;

S14, powering up a 5# pulse controller 44, sequentially opening ten 5# pulse valves, and sequentially cleaning ash of ten dust collection bags 21 of a 5# dust collection unit 205;

s15, after the operation of the 5# pulse controller 44 is finished, opening a 5# off-line ash removal valve, and after 5S (time is adjustable);

s16, closing a 6# off-line ash removal valve;

the S17 and 6# pulse controller 44 is powered on, ten 6# pulse valves are sequentially opened, and ten dust collection bags 21 of the 6# dust collection unit 206 are sequentially subjected to dust collection;

And after the operation of the S18 and 6# pulse controller 44 is finished, opening a 6# off-line ash removal valve to complete ash removal of the 1# dust removal units 201 to 206.

It should be noted that, the bag-type dust collector of the present embodiment may start execution of one cycle (S1-S18) every 30 minutes (time is adjustable).

The cloth bag dust collector with the dust removing function provided by the embodiment of the utility model can ensure the normal operation of dust removing, and can shake off dust attached to the dust removing cloth bag 21 in time, so that excessive dust is prevented, smooth and non-passing smoke is prevented, and the dust removing efficiency is reduced due to the increase of differential pressure.

It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model, and not for limiting the same, and although the present utility model has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present utility model.

Claims (10)

1. A cloth bag dust collector with deashing function, characterized in that includes:

The dust removing box (1), a plurality of dust removing chambers are arranged side by side in the dust removing box (1), each dust removing chamber is provided with a dust removing unit, the lower part of each dust removing chamber is communicated with an air inlet pipeline, the air inlet pipeline is provided with a first control valve, the upper part of each dust removing chamber is connected with an air outlet pipeline, and the air outlet pipeline is communicated with the dust removing unit;

Each dust removal bin is provided with a dust removal assembly, the dust removal assembly comprises a dust removal pipe (41) and a second control valve arranged on the dust removal pipe (41), the first end of the dust removal pipe (41) is connected with the upper end of the dust removal unit, and the second end of the dust removal pipe (41) is connected with an external air source.

2. The cloth bag dust removing device with the dust removing function according to claim 1, wherein the dust removing box (1) is provided with an air inlet (12) and an air outlet (13), the air inlet (12) is communicated with all air inlet pipelines, and the air outlet (13) is communicated with all air outlet pipelines;

A differential pressure measuring element (5) is arranged between the air inlet (12) and the air outlet (13).

3. The cloth bag dust removing device with the ash cleaning function according to claim 2, wherein the pressure difference measuring element (5) is electrically connected with a controller, and the controller is electrically connected with an alarm.

4. The cloth bag dust collector with ash removal function according to claim 3, wherein the controller is electrically connected with the first control valve and the second control valve.

5. The cloth bag dust collector with ash removal function according to claim 3, wherein the first control valve is electrically connected with a switch in-place feedback member, and the switch in-place feedback member is used for monitoring the working state of the first control valve.

6. The cloth bag dust removing device with the dust removing function according to any one of claims 1 to 5, wherein the dust removing unit comprises a plurality of dust removing cloth bags (21) arranged in the dust removing chamber, and each dust removing cloth bag (21) is connected with the dust removing component.

7. The cloth bag dust collector with ash removal function according to claim 6, wherein the second control valve is a pulse valve.

8. The cloth bag dust collector with ash removal function according to claim 6, characterized in that all pulse valves on each dust collection chamber are arranged on the steam drum (43).

9. The cloth bag dust collector with ash removal function according to claim 6, wherein all pulse valves on each dust collection chamber are electrically connected with a pulse controller (44).

10. The cloth bag dust removing device with the dust removing function according to any one of claims 2 to 5, wherein an air inlet channel (14) is formed at the lower part of the dust removing box (1), a first end of the air inlet channel (14) is communicated with the air inlet (12), and a second end of the air inlet channel (14) is respectively communicated with all air inlet pipelines;

The upper part of the dust removal box (1) is provided with an air outlet channel (15), a first end of the air outlet channel (15) is communicated with the air outlet (13), and a second end of the air outlet channel (15) is respectively communicated with the air outlet pipeline.