Industrial dust collector

Abstract

The utility model provides an industrial dust collector and relates to the field of industrial dust collection. The industrial dust collector comprises a suction head, a filtering device and a double-head fan which are connected in sequence; a dust collection pipeline is connected to the filtering device, and a valve is arranged on the dust collection pipeline; the double-end fan comprises a motor, volutes and impellers, the volutes are arranged at the two ends of the motor in the axis direction in pairs, the air inlet ends of the volutes are connected with the filtering device, and the impellers are correspondingly arranged in the volutes and connected with output shafts of the motor respectively. By using the double-end fan, the air volume is increased under the condition that the output power and the air pressure are kept unchanged. And when the pressure at the filtering device is released, the suction head sucks more gas before the motor is closed, and the gas cannot completely flow into the dust collection pipeline. After the filtering device is cleaned, part of gas still flows in the pipeline between the suction head and the filtering device, so that the suction head is kept in a relatively low negative pressure state, the sucked dust-containing gas is prevented from falling off from the suction head, and the surrounding equipment is prevented from being polluted.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial dust removal field especially, and relates to an industrial dust collector. BACKGROUND

[0002] The industrial dust collector needs to close the dust suction fan, open the pipeline between the filter element and the dust collecting device, and release the pressure at the filter element to make the dust adhered to the filter element fall into the dust collecting device, so as to clean the filter element and avoid the complete blockage of the filter element.

[0003] At present, the industrial dust suction fan used in the market usually adopts a multistage centrifugal fan or a volute type centrifugal fan, and the air volume is small. When the pressure at the filter element is released, the gas sucked by the dust suction fan before being closed often flows into the dust collecting device through the pipeline rapidly, so that the suction port of the whole dust collector cannot maintain a negative pressure state, and then a large group of dust-containing gas sucked appears to fall from the suction port, polluting the surrounding equipment. SUMMARY

[0004] In order to solve the problems in the prior art, the utility model aims at providing an industrial dust collector.

[0005] The utility model provides the following technical scheme:

[0006] An industrial dust collector comprises a suction head, a filter device and a double-head fan connected in sequence.

[0007] A dust collecting pipeline is connected to the filter device, and a valve is arranged on the dust collecting pipeline.

[0008] The double-head fan comprises a motor, a volute and an impeller. The volutes are arranged at both ends of the motor along the axial direction. The air inlet end of the volute is connected to the filter device. The impeller is arranged in the volute correspondingly and is connected to the output shaft of the motor.

[0009] As a further optional scheme of the industrial dust collector, the double-head fan further comprises a shunt pipe. The shunt pipe has a first air inlet part and two first air outlet parts. The first air inlet part is connected to the filter device. The two first air outlet parts are connected to the air inlet ends of the volutes respectively.

[0010] As a further optional scheme of the industrial dust collector, the double-head fan further comprises a rack and a cover. The cover is arranged on the rack.

[0011] The motor and the shunt pipe are arranged on the rack. The motor is located above the shunt pipe. The first air inlet part is arranged in the cover.

[0012] As a further optional solution to the industrial dust collector, the rack comprises a bottom beam, a column and a top beam, the bottom beam and the top beam are both horizontally arranged, the bottom beam is connected with the bottom end of the column, and the top beam is connected with the top end of the column.

[0013] The shunt pipe is arranged on the bottom beam, and the motor is arranged on the top beam.

[0014] As a further optional solution to the industrial dust collector, the double-head fan further comprises a connecting pipe, the connecting pipe is arranged in pairs, and the first air outlet part is connected with the air inlet end of the volute through the connecting pipe.

[0015] As a further optional solution to the industrial dust collector, the double-head fan further comprises a shunt pipe, the shunt pipe has a second air outlet part and two second air inlet parts, and the two second air inlet parts are respectively connected with the air outlet ends of the volute.

[0016] As a further optional solution to the industrial dust collector, the shunt pipe is arranged outside the shell, and the shunt pipe is connected with the top of the shell.

[0017] As a further optional solution to the industrial dust collector, the bottom of the rack is provided with a plurality of supporting legs, and the supporting legs comprise elastic wear-resistant parts.

[0018] As a further optional solution to the industrial dust collector, the shell has a heat dissipation area, and a plurality of heat dissipation holes are arranged in the heat dissipation area.

[0019] As a further optional solution to the industrial dust collector, the industrial dust collector further comprises a dust collecting box, and the dust collecting box is connected with one end of the dust collecting pipe away from the filter device.

[0020] The embodiments of the utility model have the following beneficial effects:

[0021] When the above industrial dust collector is used for dust collection, the valve is in a closed state, and the air inlet end of the volute is only communicated with the suction head through the filter device. On this basis, the motor is started, the output shaft of the motor drives the impeller to rotate at high speed, the gas in the volute is discharged from the volute by centrifugal force, and the gas is continuously sucked from the air inlet end of the volute, so that a negative pressure is formed at the suction head, and the dust near the suction head is sucked in. The dust-containing gas first flows through the filter device, the dust in the gas is filtered by the filter device, and the relatively clean gas continues to flow into the air inlet end of the volute. After a period of operation, the motor is turned off, and the valve is opened, the pressure at the filter device is released, and the dust-containing gas that has been sucked into the suction head and the dust accumulated in the filter device are both introduced into the dust collecting pipe for centralized treatment.

[0022] Wherein, since the output shaft of the motor drives two impellers to rotate simultaneously, the torque on the two impellers is half of that of a conventional single-head fan under the condition that the output power and rotating speed of the motor remain unchanged, while the total torque remains unchanged. Correspondingly, the air pressure of the volute where the single impeller is located is reduced, while the total air pressure remains unchanged. At the same time, since the rotating speed of the motor remains unchanged, the rotating speed of the two impellers remains unchanged, so that the same air volume as that of the single-head fan can be achieved, thereby doubling the total air volume of the double-head fan compared with that of the single-head fan. Thus, the double-head fan can increase the air volume while keeping the air pressure unchanged under the condition that the output power remains unchanged. When the pressure at the blow-off filter device is released, more gas is sucked into the suction head before the motor is turned off, and the sucked dust-containing gas does not flow into the dust collection pipeline completely, but maintains a relatively low negative pressure state at the suction head, so that the sucked dust-containing gas can be prevented from falling from the suction head, thereby avoiding pollution of the surrounding equipment.

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor under the premise of the drawings.

[0025] Figure 1 The overall structure schematic diagram of the industrial dust collector is shown in the embodiment of the utility model is shown;

[0026] Figure 2 The overall structure schematic diagram of the double-head fan in the industrial dust collector is shown in the embodiment of the utility model is shown;

[0027] Figure 3 The internal structure schematic diagram of the double-head fan in the industrial dust collector is shown in the embodiment of the utility model is shown.

[0028] Main element symbol explanation:

[0029] 100 - suction head; 200 - filtering device; 300 - double-head fan; 310 - motor; 320 - volute; 330 - impeller; 340 - flow divider; 341 - first air inlet portion; 342 - first air outlet portion; 350 - frame; 351 - bottom beam; 352 - stand column; 353 - top beam; 360 - cover shell; 361 - heat dissipation area; 362 - heat dissipation hole; 370 - supporting leg; 371 - elastic wear-resistant portion; 372 - mounting rod; 380 - connecting pipe; 390 - manifold pipe; 391 - second air outlet portion; 392 - second air inlet portion; 400 - dust collecting pipe; 410 - valve; 500 - dust collecting box. DETAILED DESCRIPTION

[0030] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the same or like component have the same or similar designations. The embodiments described are presented by way of example only and are not intended to limit the present application as defined by the appended claims and their equivalents.

[0031] It is to be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for explanation only and not intended to limit the present application.

[0032] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In addition, the terms "first", "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is used only for the purpose of describing particular embodiments and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0035] Embodiments

[0036] Referring to Figure 1 The embodiments provide an industrial dust collector, in particular an industrial dust collector with a double-head fan. The industrial dust collector comprises a suction head 100, a filtering device 200 and a double-head fan 300 connected in sequence.

[0037] The filtering device 200 is connected with a dust collecting pipeline 400, and the dust collecting pipeline 400 is provided with a valve 410.

[0038] Referring to Figure 2 and Figure 3 In addition, the double-head fan 300 comprises a motor 310, a volute 320 and an impeller 330. The volutes 320 are arranged in pairs at both ends of the motor 310 along the axial direction, and the air inlet ends of the volutes 320 are connected with the filtering device 200. The impellers 330 are arranged correspondingly in the volutes 320 and are respectively connected with the output shafts of the motor 310.

[0039] Specifically, the impellers 330 are arranged correspondingly in the volutes 320 means that the number of the volutes 320 and the number of the impellers 330 are both two, one impeller 330 is arranged in one volute 320, and the other impeller 330 is arranged in the other volute 320. Correspondingly, the output shafts pass through both ends of the motor 310 along the axial direction. One output shaft is connected with one impeller 330, and the other output shaft is connected with the other impeller 330.

[0040] When the industrial dust collector is used, the valve 410 is closed, and the air inlet end of the volute 320 is only connected with the suction head 100 through the filter device 200. On this basis, the motor 310 is started, the output shaft of the motor 310 drives the impeller 330 to rotate at high speed, the gas in the volute 320 is discharged from the volute 320 by centrifugal force, and the gas is continuously sucked from the air inlet end of the volute 320, so that the negative pressure is formed at the suction head 100, and the dust near the suction head 100 is sucked. The dust-containing gas first flows through the filter device 200, the dust in the gas is filtered by the filter device 200, and the relatively clean gas continues to flow into the air inlet end of the volute 320. After a period of operation, the motor 310 is closed, the valve 410 is opened, the pressure at the filter device 200 is released, and the dust-containing gas that has been sucked into the suction head 100 and the dust accumulated in the filter device 200 are discharged into the dust collecting pipeline 400 for centralized treatment.

[0041] In the above embodiment, the output shaft of the motor 310 drives two impellers 330 to rotate at the same time. In the case that the output power and the rotating speed of the motor 310 are unchanged (the rated output power P, the rotating speed n and the rated torque T of the motor 310 satisfy T = 9550*P / n), the torque on each impeller 330 is half of that of a conventional single-head fan, and the total torque remains unchanged. Correspondingly, the air pressure of the volute 320 in which the single impeller 330 is located is also reduced, and the total air pressure remains unchanged. At the same time, since the rotating speed of the motor 310 is unchanged, the rotating speed of the two impellers 330 is unchanged, so that the same air volume as that of the single-head fan can be achieved, and thus the total air volume of the double-head fan 300 is doubled compared with that of the single-head fan. Therefore, the double-head fan 300 can increase the air volume while keeping the air pressure unchanged in the case that the output power is unchanged. In the case that the air volume is increased, when the pressure at the filter device 200 is released, more gas is sucked into the suction head 100 before the motor 310 is closed, and the gas does not completely flow into the dust collecting pipeline 400, but the relatively low negative pressure is maintained at the suction head 100, so that the dust-containing gas that has been sucked into the suction head 100 can be prevented from falling from the suction head 100, and thus the surrounding equipment can be prevented from being polluted.

[0042] Optionally, the filter device 200 is a bag filter.

[0043] In some embodiments, the double-head fan 300 further comprises a shunt pipe 340, the shunt pipe 340 has a first air inlet portion 341 and two first air outlet portions 342. The first air inlet portion 341 is connected with the filter device 200, and the two first air outlet portions 342 are respectively connected with the air inlet ends of the volutes 320.

[0044] In use, the gas filtered by the filtering device 200 flows into the shunt pipe 340 through the first air inlet part 341, is shunted in the shunt pipe 340, and then flows out from the two first air outlet parts 342 to the air inlet ends of the volutes 320 respectively. By connecting the two volutes 320 to the filtering device 200 simultaneously by the shunt pipe 340, the pipeline structure can be simplified.

[0045] In some embodiments, the double-head fan 300 further comprises a rack 350 and a cover 360, and the cover 360 covers the rack 350.

[0046] Correspondingly, the motor 310 and the shunt pipe 340 are both arranged on the rack 350, and the motor 310 is located above the shunt pipe 340. In addition, the first air inlet part 341 penetrates the cover 360.

[0047] In use, the motor 310 and the shunt pipe 340 are respectively installed and fixed on the rack 350. By arranging the motor 310 above the shunt pipe 340, the space in the height direction can be fully utilized, and the floor area of the double-head fan 300 can be reduced.

[0048] On this basis, the cover 360 covers the rack 350, which can protect the motor 310 and the main body of the shunt pipe 340.

[0049] Specifically, the rack 350 comprises a bottom beam 351, a column 352 and a top beam 353. The bottom beam 351 and the top beam 353 are both arranged horizontally, the bottom beam 351 is connected with the bottom end of the column 352, and the top beam 353 is connected with the top end of the column 352.

[0050] Correspondingly, the shunt pipe 340 is arranged on the bottom beam 351, and the motor 310 is arranged on the top beam 353.

[0051] Further, the bottom of the rack 350 is provided with a plurality of feet 370, and the feet 370 comprise elastic wear-resistant parts 371.

[0052] In use, the rack 350 is erected on the ground or a table top by the plurality of feet 370. The elastic wear-resistant parts 371 in the feet 370 are in contact with the ground or the table top, which can reduce the wear and tear on the rack 350 itself and the ground or the table top during transportation and placement, and prolong the service life.

[0053] In the present embodiment, the feet 370 further comprise mounting rods 372. The mounting rods 372 are arranged vertically, the top of the mounting rods 372 penetrates the bottom beam 351 and is bolted and fixed with the bottom beam 351. The bottom end of the mounting rods 372 is connected with the elastic wear-resistant parts 371.

[0054] Further, the cover 360 has a heat dissipation area 361, and a plurality of heat dissipation holes 362 are arranged in the heat dissipation area 361.

[0055] In use, the gases inside and outside the cover 360 can be exchanged through the heat dissipation holes 362, which is conducive to heat dissipation of the motor 310.

[0056] In some embodiments, the double-head fan 300 further comprises connecting pipes 380. The connecting pipes 380 are arranged in pairs, and the first air outlet portions 342 are connected to the air inlet ends of the volutes 320 through the connecting pipes 380.

[0057] Specifically, the number of the connecting pipes 380 is two. One of the first air outlet portions 342 of the shunt pipe 340 is connected to the air inlet end of one of the volutes 320 through one of the connecting pipes 380, and the other of the first air outlet portions 342 of the shunt pipe 340 is connected to the air inlet end of the other of the volutes 320 through the other of the connecting pipes 380.

[0058] In some embodiments, the double-head fan 300 further comprises a converging pipe 390. The converging pipe 390 has a second air outlet portion 391 and two second air inlet portions 392, which are respectively connected to the air outlet ends of the volutes 320.

[0059] Specifically, the two second air inlet portions 392 are respectively connected to the air outlet ends of the volutes 320, which means that one of the second air inlet portions 392 is connected to the air outlet end of one of the volutes 320, and the other of the second air inlet portions 392 is connected to the air outlet end of the other of the volutes 320.

[0060] In use, the gases in the two volutes 320 are respectively discharged into the converging pipe 390 through the corresponding second air inlet portions 392 under the action of centrifugal force, converge in the converging pipe 390, and then flow out from the second air outlet portion 391.

[0061] In this embodiment, the converging pipe 390 is arranged outside the cover 360, and the converging pipe 390 is connected to the top of the cover 360.

[0062] In some embodiments, the industrial dust collector described above further comprises a dust collecting box 500, which is connected to the end of the dust collecting pipe 400 away from the filter device 200.

[0063] In use, the motor 310 is turned off, and the valve 410 is opened to release the pressure at the filter device 200, so that the dust-containing gas that has been sucked into the suction head 100 and the dust accumulated in the filter device 200 enter the dust collecting pipe 400 together, and then enter the dust collecting box 500 through the dust collecting pipe 400, so that the user only needs to clean the dust collecting box 500 regularly.

[0064] In summary, the industrial dust collector described above increases the air volume while keeping the output power and air pressure unchanged by using the double-head fan 300. When the pressure at the release filter device 200 is released, the suction head 100 sucks in more air before the motor 310 is turned off, and the air does not completely flow into the dust collection pipe 400. After the cleaning of the filter device 200 is completed, part of the air still flows in the pipe between the suction head 100 and the filter device 200, so that a relatively low negative pressure state is maintained at the suction head 100, which can avoid the dust-containing air that has been sucked in from falling off the suction head 100 and thus avoid polluting the surrounding equipment.

[0065] In particular, the double-head fan 300 is a high-speed centrifugal fan equipped with a high-efficiency three-dimensional flow impeller 330. The three-dimensional flow impeller 330 is made of aviation aluminum material and is matched with an advanced five-axis machining center, so that the impeller 330 has extremely high precision and strength, and the impeller 330 can safely and stably operate at a speed of 20,000-30,000 revolutions per minute. The gap between the impeller 330 and the volute 320 is kept at 0.1-0.5 mm, which can make the air be delivered from the volute 320 at a high speed and high pressure with extremely high efficiency.

[0066] In addition, the structural design of the double-head fan 300 can utilize its own structural characteristics, i.e., the double volutes 320 simultaneously take in high-pressure air on both sides, and the two groups of air intakes generate two groups of mutually opposite axial forces that cancel each other out, so that the axial force can avoid generating additional friction on the bearing and affecting the service life of the bearing, and at the same time, the working speed of the double-head fan 300 can be as high as possible, so that the industrial dust collector described above can achieve higher pressure.

[0067] The double-head fan 300 can greatly save electricity, and compared with a single-head fan, it can save 40-70% of energy, has a small size, low noise, and a more quiet operation process.

[0068] In all the examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0069] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0070] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. An industrial vacuum cleaner characterized in that, The industrial dust collector comprises a suction head, a filtering device and a double-head fan connected in sequence. A dust collecting pipe is connected to the filtering device, and a valve is arranged on the dust collecting pipe. The double-head fan comprises a motor, a volute and an impeller, the volute is arranged at both ends of the motor along the axial direction, the air inlet end of the volute is connected to the filtering device, and the impeller is arranged in the volute and connected to the output shaft of the motor.

2. The industrial vacuum cleaner of claim 1, wherein, The double-head fan further comprises a shunt pipe, the shunt pipe has a first air inlet part and two first air outlet parts, the first air inlet part is connected to the filtering device, and the two first air outlet parts are respectively connected to the air inlet ends of the volutes.

3. The industrial vacuum cleaner of claim 2, wherein, The double-head fan further comprises a rack and a cover, and the cover is arranged on the rack. The motor and the shunt pipe are arranged on the rack, the motor is located above the shunt pipe, and the first air inlet part penetrates through the cover.

4. The industrial vacuum cleaner of claim 3, wherein, The rack comprises a bottom beam, a stand and a top beam, the bottom beam and the top beam are arranged horizontally, the bottom beam is connected to the bottom end of the stand, and the top beam is connected to the top end of the stand. The shunt pipe is arranged on the bottom beam, and the motor is arranged on the top beam.

5. The industrial vacuum cleaner of claim 3, wherein, The double-head fan further comprises a connecting pipe, the connecting pipe is arranged in pairs, and the first air outlet part is connected to the air inlet end of the volute through the connecting pipe.

6. The industrial vacuum cleaner of claim 3, wherein, The double-head fan further comprises a shunt pipe, the shunt pipe has a second air outlet part and two second air inlet parts, and the two second air inlet parts are respectively connected to the air outlet ends of the volutes.

7. The industrial vacuum cleaner of claim 6, wherein, The shunt pipe is arranged outside the cover, and the shunt pipe is connected to the top of the cover.

8. The industrial vacuum cleaner of claim 3, wherein, The bottom of the rack is provided with a plurality of supporting legs, and the supporting leg comprises an elastic wear-resistant part.

9. The industrial vacuum cleaner of claim 3, wherein, The cover has a heat dissipation area, and a plurality of heat dissipation holes are arranged in the heat dissipation area.

10. The industrial cleaner of any one of claims 1-9, wherein, The industrial dust collector further comprises a dust collecting box, and the dust collecting box is connected to the end of the dust collecting pipe away from the filtering device.

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