CN214235492U - Dust collection power device and dust collection system - Google Patents

Abstract

The utility model provides a dust absorption power device and dust collecting system relates to boiler factory building dust collecting equipment's technical field. The dust collection power device comprises a Roots blower and a cyclone dust collector, the cyclone dust collector is used for removing dust in dust-containing smoke, an air inlet of the Roots blower is communicated with an air outlet of the cyclone dust collector, and an air outlet of the Roots blower can be communicated with a boiler flue; the dust collection power device also comprises an ash discharge auger, and an ash inlet of the ash discharge auger is communicated with an ash discharge port of the cyclone dust collector. The dust collection power device can provide larger negative pressure by adopting the Roots blower and utilizing the power of the induced draft fan, and has good dust collection effect; the Roots blower occupies small space and is convenient to arrange and move; the power of the induced draft fan can be used for reducing the energy consumption of the Roots blower and reducing the operation cost; the flue gas is discharged into a boiler flue, and the flue gas can be further processed by using a device in the boiler flue, so that the finally discharged flue gas meets the discharge standard.

Description

Dust collection power device and dust collection system

Technical Field

The utility model relates to a boiler factory building dust collecting equipment's technical field particularly, relates to a dust absorption power device and dust collecting system.

Background

In order to keep the environmental sanitation, a dust collection system is designed and installed in the boiler plant and comprises a dust collection power device and a flue gas conveying pipeline, and the dust collection power device provides a negative pressure environment for the whole dust collection system; the smoke conveying pipeline is provided with a plurality of negative pressure orifices, and when in cleaning, workers connect the dust suction pipe to the negative pressure orifices to suck dust scattered in equipment and workshop components into the smoke conveying pipeline; then, the dust-collecting power device sucks the dust-containing smoke from the smoke conveying pipeline, removes dust and then discharges the dust.

In the prior art, negative pressure provided by a dust collection power device is often insufficient, so that the dust collection effect is poor during cleaning.

SUMMERY OF THE UTILITY MODEL

A first object of the present invention is to provide a dust-collecting power device, which is not sufficient for solving the negative pressure of the dust-collecting power device existing in the prior art, and for cleaning the dust-collecting power device.

The utility model provides a dust-absorbing power device, which comprises a Roots blower and a cyclone dust collector, wherein the cyclone dust collector is used for removing dust in dust-containing flue gas, an air inlet of the Roots blower is communicated with an air outlet of the cyclone dust collector, and an air outlet of the Roots blower can be communicated with a boiler flue; the dust collection power device further comprises an ash discharge auger, and an ash inlet of the ash discharge auger is communicated with an ash discharge port of the cyclone dust collector.

The utility model provides a dust absorption power device can produce following beneficial effect:

the dust-collecting power device provided by the utility model adopts the Roots blower as the negative pressure power source, has strong power and can provide larger negative pressure to meet the dust-collecting requirement; in addition, the gas vent of roots's fan can communicate with the boiler flue to can borrow the power of draught fan in the boiler flue, can increase the negative pressure, further satisfy the dust absorption needs. Namely, the utility model provides a dust absorption power device through the power that adopts roots's fan and borrow the draught fan, can provide great negative pressure, and dust absorption effect is good.

In addition, in the dust-collecting power device provided by the utility model, the Roots blower has small volume, small occupied space and convenient arrangement and movement; the power of the induced draft fan can be used for reducing the energy consumption of the Roots blower, so that the operation cost can be reduced; the Roots blower discharges the flue gas into a boiler flue, and the flue gas can be further treated by devices for denitration, desulfurization, dust removal and the like in the boiler flue, so that the finally discharged flue gas meets the emission standard; the arrangement of the ash discharge auger is beneficial to the continuous and smooth dust removal of the cyclone dust collector so as to ensure the dust removal effect.

Furthermore, the dust collection power device also comprises a bag-type dust collector, and an air inlet of the bag-type dust collector is communicated with an air outlet of the cyclone dust collector;

an isolation valve is arranged between the cyclone dust collector and the Roots blower, when the boiler operates, the isolation valve is opened, and the flue gas discharged by the cyclone dust collector flows to the Roots blower; when the boiler does not operate, the isolating valve is closed, and the flue gas discharged by the cyclone dust collector flows to the bag-type dust collector.

Furthermore, the dust collection power device also comprises a screening device, and dust-containing smoke flows to the cyclone dust collector after flowing through the screening device;

the screening device comprises an iron removal pipeline and a magnet arranged on the iron removal pipeline, and the magnet is used for adsorbing magnetic impurities in the dust-containing flue gas to the iron removal pipeline; and/or the screening device comprises a screening cylinder and a screen arranged in the screening cylinder, wherein the dusty flue gas flows through the screen, and the screen is used for removing large-particle impurities in the dusty flue gas.

Further, the screen is inclined from top to bottom in the direction away from the iron removal pipeline; the bottom of screening section of thick bamboo is provided with the clearance mouth, opens the clearance mouth, the impurity that the sieve screen was sieved can drop.

Further, the air inlet of sieve separator is provided with attach fitting, attach fitting can be connected with flue gas pipeline or dust absorption pipe.

Furthermore, the dust collection power device also comprises a movable rack, and the Roots blower, the cyclone dust collector, the bag-type dust collector and the screening device are all arranged on the movable rack.

A second object of the present invention is to provide a dust collecting system, which solves the problem of insufficient negative pressure of the dust collecting power device in the prior art, and the problem of poor dust collecting effect during cleaning.

The utility model provides a dust collecting system, including the dust absorption pipe with dust absorption power device, the income dirt mouth of dust absorption pipe is provided with the dust absorption mouth, the play dirt mouth of dust absorption pipe can with cyclone's air inlet intercommunication.

The utility model provides a dust collecting system has foretell dust absorption power device's whole advantages, so no longer repeated here.

Further, dust collecting system still includes flue gas pipeline and a plurality of coupling assembling, flue gas pipeline is provided with a plurality of negative pressure drill way, coupling assembling set up in the negative pressure drill way, coupling assembling is used for connecting the dust absorption pipe.

Furthermore, the connecting assembly comprises a first connecting pipe and a second connecting pipe, the first connecting pipe is communicated with the pipe wall of the second connecting pipe in a crossed manner, the pipe sections of the second connecting pipe, which are positioned at two sides of the communicated position, are respectively a containing pipe section and a connecting pipe section, the end part of the containing pipe section is sealed, an elastic part is arranged in the containing pipe section, one end, facing the connecting pipe section, of the elastic part is fixedly connected with a plugging part, and the elastic part is used for driving the plugging part to move into the connecting pipe section and plugging the connecting pipe section; and one side of the plugging piece facing the connecting pipe section is provided with a convex propping piece.

Furthermore, dust collecting system still includes detection element, detection element include the treater with all connect in siren and the negative pressure sensor of treater, the pipe outer wall of first connecting pipe is equipped with annular connection boss, the pipe wall of first connecting pipe with the corresponding region in the ring of connecting the boss is equipped with the pressure sensing hole, it has to connect boss accordant connection negative pressure sensor.

Drawings

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

Fig. 1 is a schematic view of a partial structure of a dust collection power device provided by an embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of a dust collection system according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a connection assembly of a dust collection system according to an embodiment of the present invention;

fig. 4 is a sectional view of the connection assembly of the dust collecting system provided by the embodiment of the present invention when a negative pressure sensor is installed.

Description of reference numerals:

100-Roots blower; 200-cyclone dust collector; 300-ash discharge auger; 400-an isolation valve; 500-bag dust collector; 600-a screen separator; 610-an iron removal pipeline; 620-magnet; 630-a screening drum; 640-a screen mesh; 700-boiler flue; 800-flue gas conveying pipe;

910-a first connection tube; 911-connecting a boss; 912-pressure sensing holes; 920-a second connecting pipe; 921-receiving the pipe section; 922-connecting the pipe sections; 930-an elastic member; 940-a closure; 950-a counter part; 960-handheld terminal; 970-an alarm; 980-negative pressure sensor.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present embodiment provides a dust-collecting power device, as shown in fig. 1, the dust-collecting power device includes a roots blower 100 and a cyclone dust collector 200, the cyclone dust collector 200 is used for removing dust in dust-containing flue gas, an air inlet of the roots blower 100 is communicated with an air outlet of the cyclone dust collector 200, and an air outlet of the roots blower 100 can be communicated with a boiler flue 700.

The dust-collecting power device provided by the embodiment adopts the Roots blower 100 as a negative pressure power source, has strong power, and can provide larger negative pressure to meet the dust-collecting requirement; in addition, the exhaust port of the roots blower 100 can be communicated with the boiler flue 700, so that the power of the induced draft fan in the boiler flue 700 can be used, the negative pressure can be increased, and the dust collection requirement can be further met. That is, the dust suction power device provided by the present embodiment can provide a large negative pressure by using the roots blower 100 and the power of the induced draft fan, and has a good dust suction effect.

In addition, in the dust-collecting power device provided by the embodiment, the roots blower 100 has a small volume, occupies a small space, and is convenient to arrange and move; the power of the induced draft fan can also reduce the energy consumption of the Roots blower 100, so that the operation cost can be reduced; the Roots blower 100 discharges the flue gas into the boiler flue 700, and the flue gas can be further processed by devices for denitration, desulfurization, dust removal and the like in the boiler flue 700, so that the finally discharged flue gas meets the discharge standard.

Specifically, in this embodiment, as shown in fig. 1, the dust collection power device further includes a bag-type dust collector 500, and an air inlet of the bag-type dust collector 500 is communicated with an air outlet of the cyclone dust collector 200; an isolation valve 400 is arranged between the cyclone dust collector 200 and the Roots blower 100, when the boiler operates, the isolation valve 400 is opened, and the flue gas discharged by the cyclone dust collector 200 flows to the Roots blower 100; when the boiler is not operated, the isolation valve 400 is closed, and the flue gas discharged from the cyclone dust collector 200 flows to the bag-type dust collector 500. When shutting down and overhauling, boiler and draught fan all do not operate, under this kind of setting form, can close isolating valve 400, make cyclone 200 exhaust flue gas flow to sack cleaner 500, make cyclone 200 carry out preliminary dust removal to the dusty flue gas, sack cleaner 500 removes dust once more and discharges to the flue gas after preliminary dust removal, utilize cyclone 200 and sack cleaner 500 respective characteristics to carry out the dual dust removal, the dust removal demand when having satisfied shutting down and overhauling, and guaranteed that the emission of flue gas satisfies emission standard.

Specifically, in this embodiment, as shown in fig. 1, the dust collection power device further includes a classifier 600, and the dust-containing flue gas flows through the classifier 600 and then flows to the cyclone dust collector 200; the sieving device 600 comprises an iron removal pipeline 610 and a magnet 620 arranged on the iron removal pipeline 610, wherein the magnet 620 is used for adsorbing magnetic impurities in the dust-containing flue gas to the iron removal pipeline 610; the sifter 600 includes a sifting cylinder 630 and a screen 640 disposed in the sifting cylinder 630, wherein the dusty flue gas flows through the screen 640, and the screen 640 is used for removing large particle impurities from the dusty flue gas. Under this kind of the form that sets up, magnet 620 can sieve out magnetic conduction impurity such as iron fillings, bolt from the dusty flue gas, and screen cloth 640 can sieve out large granule impurity such as great billet and working of plastics from the dusty flue gas to the impurity in the dusty flue gas can be reduced widely to sieve 600, can protect cyclone 200, sack cleaner 500, isolating valve 400 and roots blower 100 etc. simultaneously, and then guarantee the normal operating of system.

Specifically, in the present embodiment, the screening drum 630 is disposed downstream of the deironing duct 610 in the flowing direction of the dust-containing flue gas. In such an arrangement, the iron chips, bolts and the like screened by the magnet 620 and the wood blocks, plastic pieces and the like screened by the screen 640 are conveniently cleaned out of the screen 600. Of course, in other embodiments of the present application, the screening drum 630 may also be disposed upstream of the deironing duct 610 in the flow direction of the dusty flue gas.

Preferably, in this embodiment, magnet 620 sets up in deironing pipeline 610's lateral wall, so set up and can effectively avoid magnet 620 to the interference of dusty flue gas air current, can effectively reduce the flow resistance of dusty flue gas. Of course, in other embodiments of the present application, the magnet 620 may also be disposed on the inner sidewall of the deironing duct 610.

More specifically, in the present embodiment, the screen 640 is inclined from top to bottom in a direction away from the deironing duct 610. Under this kind of the form that sets up, the large granule impurity that is blocked by screen cloth 640 can fall downwards to can effectively avoid the jam to the sieve mesh of screen cloth 640, thereby be favorable to keeping the smooth and easy flow of dirt flue gas.

In this embodiment, as shown in fig. 1, a cleaning port is formed at the bottom of the sieving drum 630, and when the cleaning port is opened, the impurities sieved by the sieve 640 can fall; in addition, the cleaning tool extends into the deironing pipeline 610 through the cleaning opening, and impurities adsorbed on the side wall of the deironing pipeline 610 by the magnet 620 can also be cleaned out of the cleaning opening.

It should be noted that the structure of the sifter 600 is a preferred solution in this embodiment, but in other embodiments of the present application, the sifter 600 may include only the deironing duct 610 and the magnet 620, or only the sifting cylinder 630 and the sifting screen 640.

Specifically, in this embodiment, the air inlet of the sifter 600 is provided with a connection joint, which can be connected with the flue gas conveying pipe 800 or the dust suction pipe. In the arrangement mode, the position of the screen 600 can be flexibly arranged, so that the screen 600, the cyclone dust collector 200, the bag-type dust collector 500, the Roots blower 100 and the like can move; in addition, the air inlet of the sieving device 600 can be connected with the flue gas conveying pipeline 800 and also can be connected with a dust absorption pipe, so that the use mode is more flexible; and when the air inlet of the sifter 600 is connected with the dust suction pipe, the cyclone dust collector 200, the bag-type dust collector 500, the roots blower 100 and the like can be used as a movable dust collector, so that the dust suction range can be enlarged.

In this embodiment, the dust collection power device further includes a movable frame (not shown), and the roots blower 100, the cyclone dust collector 200, the bag-type dust collector 500, and the sieving device 600 are all disposed on the movable frame. The movable rack is used for loading the Roots blower 100 and the like, and the overall movement convenience of the Roots blower 100, the cyclone dust collector 200, the bag-type dust collector 500, the screening device 600 and the like is greatly improved.

In particular, the movable frame may be a tractor.

Specifically, in this embodiment, the dust collection power device further includes an ash discharge auger 300, and an ash inlet of the ash discharge auger 300 is communicated with an ash discharge port of the cyclone dust collector 200. The dust separated from the cyclone dust collector 200 is conveyed out in time by using the ash discharge auger 300, which is beneficial to the continuous and smooth dust removal of the cyclone dust collector 200 to ensure the dust removal effect and is convenient for bagging or loading the dust so as to transport the dust to a designated place; in addition, the arrangement of the ash discharge auger 300 also reduces the labor intensity of workers, saves manpower and improves the working efficiency.

The present embodiment further provides a dust collecting system, as shown in fig. 2, the dust collecting system includes a dust collecting pipe (not shown in the figure) and the dust collecting power device, a dust inlet of the dust collecting pipe is provided with a dust collecting nozzle, and a dust outlet of the dust collecting pipe can be communicated with an air inlet of the cyclone dust collector 200. The dust collection system has all the advantages of the dust collection power device, and therefore, the detailed description is omitted.

In this embodiment, as shown in fig. 2, the dust collection system further includes a flue gas conveying pipe 800 and a plurality of connection assemblies, the flue gas conveying pipe 800 is provided with a plurality of negative pressure orifices, the connection assemblies are disposed at the negative pressure orifices, and the connection assemblies are used for connecting the dust collection pipe. In this arrangement, when the dust collection pipe is used to clean dust on different equipment or plant components, the dust collection pipe can be connected to the flue gas conveying pipeline 800 nearby, and the dust collection pipe is communicated with the cyclone dust collector 200 through the flue gas conveying pipeline 800.

Specifically, in this embodiment, as shown in fig. 3 and fig. 4, the connection assembly includes a first connection pipe 910 and a second connection pipe 920, the first connection pipe 910 is cross-connected to a pipe wall of the second connection pipe 920, pipe sections of the second connection pipe 920 located at two sides of the connection position are respectively a containing pipe section 921 and a connection pipe section 922, an end of the containing pipe section 921 is closed, an elastic member 930 is disposed in the containing pipe section 921, a blocking member 940 is fixedly connected to one end of the elastic member 930 facing the connection pipe section 922, and the elastic member 930 is used for driving the blocking member 940 to move into the connection pipe section 922 and blocking the connection pipe section 922; the plugging member 940 is provided with a protruding propping member 950 at a side facing the connecting pipe section 922.

When the dust suction pipe is not required to be connected, the plugging piece 940 moves to the connecting pipe section 922 under the elastic pushing action of the elastic piece 930 and plugs the connecting pipe section 922, accordingly, the negative pressure orifice is in a blocking state with the external environment, so that the negative pressure orifice is plugged, the influence of air in the external environment entering the smoke conveying pipeline 800 on the negative pressure state in the smoke conveying pipeline is reduced, and the dust suction effect of the dust suction pipe communicated with the smoke conveying pipeline 800 is correspondingly ensured. When the dust pipe needs to be connected, the dust pipe can be inserted into the opening end of the connecting pipe section 922, with the insertion of the dust pipe, the insertion end of the dust pipe abuts against the abutting piece 950 located in the connecting pipe section 922, the dust pipe continues to be inserted, the insertion end of the dust pipe pushes the abutting piece 950 towards the containing pipe section 921, the abutting piece 950 drives the plugging piece 940 to move synchronously with the plugging piece, and the elastic member 930 is compressed until the blocking member 940 moves into the receiving pipe section 921, the dust suction pipe is inserted into the connecting pipe section 922, and at this time, the blocking piece 940 no longer blocks the connecting pipe section 922 and does not block the communicating opening of the first connecting pipe 910 and the second connecting pipe 920, accordingly, the negative pressure orifice is communicated with the dust suction pipe through the first connecting pipe 910 and the connecting pipe section 922, negative pressure is formed in the dust suction pipe, and air in an external environment drives pulverized coal and the like to enter the dust suction pipe under the action of internal and external pressure difference, and then enters the flue gas conveying pipeline 800.

After the dust collection pipe is used, the dust collection pipe is pulled out from the connecting pipe section 922, the abutting piece 950 is not pushed by the dust collection pipe any more, the elastic piece 930 in the compressed state pushes the blocking piece 940 and the abutting piece 950 towards the connecting pipe section 922, the blocking piece 940 moves into the connecting pipe section 922 and blocks the connecting pipe section 922, the connecting assembly is in the blocking state again, and accordingly the negative pressure orifice is blocked.

Namely, when in use, the dust collection pipe is inserted into the connecting pipe section 922 of the connecting assembly, the plugging piece 940 in the dust collection pipe does not plug the connecting pipe section 922 under the pushing action of the dust collection pipe, the connecting assembly is in a communicated state, and the dust collection pipe can normally suck dust; after the use, the dust collection pipe is pulled out, the plugging member 940 moves into the connecting pipe section 922 under the pushing action of the elastic member 930, and plugs the connecting pipe section 922, and the connecting assembly is in a plugging state, so as to reduce the influence of the external environment on the negative pressure state in the smoke conveying pipeline 800. This coupling assembling can adapt to the installation state of dust absorption pipe and be connected state or shutoff state, and the corresponding realization is to the automatic control in negative pressure drill way, the simple operation, and coupling assembling installs in flue gas pipeline 800 all the time, is difficult to lose to can ensure dust collecting system's normal operating.

Specifically, in this embodiment, the dust collecting system further includes a detection assembly, the detection assembly includes a processor, and an alarm 970 and a negative pressure sensor 980 both connected to the processor, the outer wall of the first connection pipe 910 is provided with an annular connection boss 911, a pressure sensing hole 912 is provided in a corresponding area in the pipe wall of the first connection pipe 910 and the annular connection boss 911, and the connection boss 911 is connected to the negative pressure sensor 980 in a matching manner. Can install a plurality of coupling assembling on the flue gas conveying pipe 800, all be provided with a negative pressure sensor 980 on every coupling assembling, and every negative pressure sensor 980 corresponds an siren 970, and negative pressure sensor 980 can the real-time supervision atmospheric pressure in the corresponding first connecting pipe 910 to transmit atmospheric pressure signal to the treater, the treater is according to the on off state of the atmospheric pressure signal control siren 970 who obtains.

Specifically, when the dust suction pipe is not connected and the connection assembly is not leaking air, the air pressure in the first connection pipe 910 is approximately equal to the air pressure in the flue gas conveying pipeline 800, the negative pressure sensor 980 transmits the detected air pressure signal to the processor, the processor determines the air pressure signal to obtain a normal operation result, and the alarm 970 is correspondingly controlled to be in a closed state; when coupling assembling gas leakage or dust absorption pipe peg graft in coupling assembling, atmospheric pressure in flue gas conveying pipeline 800 and the first connecting pipe 910 risees, negative pressure sensor 980 is with corresponding atmospheric pressure signal transmission to treater, the treater reachs the result of abnormal operation after judging this atmospheric pressure signal, corresponding control is opened with the corresponding siren 970 of this coupling assembling, operating personnel judges according to siren 970 and the known dust absorption pipe connection condition, judge that the gas leakage situation takes place in the coupling assembling department that does not connect the dust absorption pipe and siren 970 sends the police dispatch newspaper, thereby overhaul coupling assembling and corresponding negative pressure drill way to this department. Negative pressure sensor 980's setting can real-time supervision coupling assembling's atmospheric pressure to the accurate alarm 970 that sends the gas leakage warning to operating personnel fast, and operating personnel can be according to alarm 970 rapid judgement gas leakage position, overhauls with the pertinence, thereby improves dust collecting system's practicality and use convenience greatly. Specifically, the alarm 970 may be a buzzer alarm, an optical alarm, an acousto-optical alarm, or the like.

More specifically, in this embodiment, the negative pressure sensor 980 is wirelessly connected to the processor, the vacuum system may include a handheld terminal 960, and the processor and the alarm 970 are both disposed on the handheld terminal 960. So set up, make things convenient for the staff to carry handheld terminal 960 and overhaul. Still further, the handheld terminal 960 may include a display screen coupled to the processor, on which the status of the various negative pressure ports may be displayed, such as: when air leakage occurs at a certain negative pressure orifice, the display screen displays the fault state of the negative pressure orifice; and when the negative pressure orifice is well sealed, the display screen displays that the state of the negative pressure orifice is normal. So set up, the staff can acquire the state in each negative pressure drill way more directly perceivedly.

Finally, it is further noted that, herein, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The dust collection power device is characterized by comprising a Roots blower (100) and a cyclone dust collector (200), wherein the cyclone dust collector (200) is used for removing dust in dust-containing flue gas, an air inlet of the Roots blower (100) is communicated with an air outlet of the cyclone dust collector (200), and an air outlet of the Roots blower (100) can be communicated with a boiler flue (700); the dust collection power device further comprises an ash discharge auger (300), and an ash inlet of the ash discharge auger (300) is communicated with an ash discharge port of the cyclone dust collector (200).

2. The dust collection power device according to claim 1, further comprising a bag-type dust collector (500), wherein an air inlet of the bag-type dust collector (500) is communicated with an air outlet of the cyclone dust collector (200);

an isolation valve (400) is arranged between the cyclone dust collector (200) and the Roots blower (100), when the boiler operates, the isolation valve (400) is opened, and the flue gas discharged by the cyclone dust collector (200) flows to the Roots blower (100); when the boiler does not operate, the isolation valve (400) is closed, and the smoke discharged by the cyclone dust collector (200) flows to the bag-type dust collector (500).

3. The dust collection power device according to claim 2, characterized in that the dust collection power device further comprises a screen (600), and the dust-containing flue gas flows to the cyclone dust collector (200) after flowing through the screen (600);

the screening device (600) comprises an iron removal pipeline (610) and a magnet (620) arranged on the iron removal pipeline (610), wherein the magnet (620) is used for adsorbing magnetic impurities in the dust-containing flue gas to the iron removal pipeline (610); and/or the sieving device (600) comprises a sieving cylinder (630) and a screen (640) arranged in the sieving cylinder (630), wherein the dust-containing flue gas flows through the screen (640), and the screen (640) is used for removing large-particle impurities in the dust-containing flue gas.

4. The dust collection power device as claimed in claim 3, wherein the screen (640) is inclined from top to bottom in a direction away from the iron removal duct (610); the bottom of screening section of thick bamboo (630) is provided with the clearance mouth, opens the clearance mouth, the impurity that screen cloth (640) sieved can drop.

5. The suction power unit according to claim 4, characterized in that the air inlet of the sifter (600) is provided with a connection joint, which can be connected with a flue gas duct (800) or a suction pipe.

6. The dust collection power device according to claim 5, further comprising a movable frame, wherein the Roots blower (100), the cyclone dust collector (200), the bag-type dust collector (500) and the screen (600) are all arranged on the movable frame.

7. A dust collection system, characterized by comprising a dust collection pipe and the dust collection power device as claimed in any one of claims 1 to 6, wherein a dust collection nozzle is arranged at a dust inlet of the dust collection pipe, and a dust outlet of the dust collection pipe can be communicated with an air inlet of the cyclone dust collector (200).

8. The dust extraction system of claim 7, further comprising a smoke duct (800) and a plurality of connection assemblies, wherein the smoke duct (800) is provided with a plurality of negative pressure apertures, wherein the connection assemblies are provided with the negative pressure apertures, and wherein the connection assemblies are configured to connect to a dust extraction pipe.

9. The dust collecting system of claim 8, wherein the connecting assembly comprises a first connecting pipe (910) and a second connecting pipe (920), the first connecting pipe (910) is cross-communicated with a pipe wall of the second connecting pipe (920), pipe sections of the second connecting pipe (920) located at two sides of the communication position are a receiving pipe section (921) and a connecting pipe section (922), an end of the receiving pipe section (921) is closed, an elastic member (930) is arranged in the receiving pipe section (921), a blocking member (940) is fixedly connected to one end of the elastic member (930) facing the connecting pipe section (922), and the elastic member (930) is used for driving the blocking member (940) to move into the connecting pipe section (922) and blocking the connecting pipe section (922); one side of the plugging piece (940) facing the connecting pipe section (922) is provided with a convex propping piece (950).

10. The dust collection system of claim 9, further comprising a detection assembly, wherein the detection assembly comprises a processor, and an alarm (970) and a negative pressure sensor (980) both connected to the processor, the outer pipe wall of the first connection pipe (910) is provided with an annular connection boss (911), the corresponding area between the pipe wall of the first connection pipe (910) and the inside of the ring of the connection boss (911) is provided with a pressure sensing hole (912), and the connection boss (911) is connected with the negative pressure sensor (980) in a matching manner.

Images