CN112568785A

CN112568785A - Industrial dust collector

Info

Publication number: CN112568785A
Application number: CN201911280269.9A
Authority: CN
Inventors: 张士松; 张骥; 毋宏兵; 钟红风
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2019-09-30
Filing date: 2019-12-13
Publication date: 2021-03-30
Also published as: CN213665058U; WO2021063402A1; WO2021062947A1; CN112568786A

Abstract

The invention provides an industrial dust collector, which comprises a dust collection conduit; an air flow generating device for generating air flow by sucking air from the dust suction duct, wherein the air flow generating device comprises a motor and a fan driven by the motor; the primary separation device comprises a dust barrel, the dust barrel comprises a side wall and an accommodating cavity formed by the side wall, and the accommodating cavity is communicated with the dust collection conduit; a connecting passage including an inlet and an outlet, wherein the inlet communicates with the receiving cavity; a secondary separation device communicating the outlet and the airflow generating device. The connecting channel is arranged between the primary separating device and the secondary separating device in the industrial dust collector, so that the industrial dust collector can continuously collect dust with large suction force, and the working efficiency is improved.

Description

Industrial dust collector

Technical Field

The invention relates to an industrial dust collector.

Background

Industrial cleaners are commonly used to collect large areas of dust-generating sites; or directly connected to the dust outlet of a dust-producing tool, such as a sander, a slotter, etc.; or to work metal, plastic or other materials such as concrete or stone. In these cleaners, a dust collecting tub, a motor and a fan for generating an air current, a separation filter device, a power switch, and a power cord having a plug are generally included. The motor and fan create a vacuum and the dust laden air enters the separating and filtering device through the suction pipe, wherein most of the dust can be separated from the air flow and fall into the dust collecting bucket; a small part of dust enters the cylindrical filter along with the airflow, but some dust is blocked by the filter again and falls to the dust collecting barrel; finally, the airflow flows to the fan, and the cleaned air is discharged from an outlet at the fan.

During operation, dust particles collect on the outer surface of the filter. Because the dust in the working site is more, and the humidity of the dust similar to concrete is high and heavier, the filter is easy to block, thereby limiting the air flow and preventing the dust collector from working normally. So that the surface of the filter must be frequently cleaned manually or replaced with a new one.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provides an industrial dust collector which can continuously maintain large suction force and resist blockage.

The technical scheme for solving the technical problems is as follows: an industrial vacuum cleaner, comprising: a dust collection duct; the air flow generating device is used for sucking air from the dust suction duct to generate air flow and comprises a motor and a fan driven by the motor; the primary separation device comprises a dust barrel, the dust barrel comprises an accommodating cavity, and the accommodating cavity is communicated with the dust collection conduit; a connecting passage including an inlet and an outlet, wherein the inlet communicates with the receiving cavity; a secondary separation device communicating the outlet and the airflow generating device.

According to the industrial dust collector, the connecting channel is arranged between the primary separating device and the secondary separating device, so that the industrial dust collector can continuously collect dust with large suction force, and the working efficiency is improved.

Preferably, the inner diameter of the dust barrel ranges from 200mm to 500 mm.

Preferably, the inner diameter of the dust barrel ranges from 250mm to 400 mm.

Preferably, the industrial dust collector has a rated power P, and the ratio of the diameter of the primary separator to the rated power P ranges from 0.133 mm/W to 0.625 mm/W.

Preferably, the industrial dust collector has a rated power P, and the ratio of the diameter of the primary separator to the rated power P is in the range of 0.167-0.5 mm/W.

Preferably, the secondary separation device is provided with a dust cup for collecting dust, and the ratio of the effective volume of the dust barrel to the effective volume of the dust cup ranges from 6 to 12.

Preferably, the secondary separation device is provided with a dust cup for collecting dust, and the ratio of the effective volume of the dust barrel to the effective volume of the dust cup ranges from 7 to 11.

Preferably, the secondary separation device is provided with a dust cup for collecting dust, and the effective volume of the dust bucket is more than or equal to 5L; the effective volume of the dust cup is more than or equal to 0.8L.

Preferably, at least a portion of at least one of the motor and the secondary separating apparatus extends into the receiving cavity.

Preferably, the industrial dust collector is further provided with a mounting seat detachably connected with the dust barrel, and the airflow generating device is arranged on the mounting seat.

Preferably, the mounting seat is provided with an accommodating cavity accommodated in the accommodating cavity, and the accommodating cavity at least partially accommodates the motor.

Preferably, the receiving cavity at least partially receives the secondary separation device.

Preferably, the secondary separation device is provided with a dust cup extending into the accommodating cavity, the dust cup comprises a peripheral wall, one end of the peripheral wall is connected to the mounting seat, and the other end of the peripheral wall is provided with a sealing cover movably connected with the peripheral wall.

Preferably, the secondary separation device is provided with a dust cup extending into the accommodating cavity, a support is arranged in the dust barrel, the dust cup is connected with the dust barrel through the support, and the dust pouring opening of the dust cup and the dust pouring opening of the dust barrel face the same direction.

Preferably, the secondary separation device comprises a secondary separator, the secondary separator comprises a separation part and an end cover connected with the separation part, the separation part comprises a plurality of separation bodies, each separation body is provided with an inner cavity penetrating through the body, an ash inlet is formed in the side wall of one end of the inner cavity, an ash outlet is formed in the other end of the inner cavity, the ash inlet is communicated with the air inlet part, and the ash outlet is communicated with the dust cup; and the end cover is provided with an air outlet pipe communicated with the air outlet part, and the air outlet pipe is positioned in the inner cavity.

Preferably, the end cap and the separating part are detachably connected with the secondary separating device, and the secondary separating device comprises an air inlet part communicated with the outlet, an air outlet part communicated with the airflow generating device, a secondary separator communicated with the air inlet part and the air outlet part, and a dust cup communicated with the secondary separator.

Preferably, the separation part is provided with an ash inlet cavity, and the ash inlet cavity is communicated with the ash inlet and the air inlet part.

Preferably, an air outlet cavity is formed in the end cover and is communicated with the air outlet pipe and the air outlet part.

Preferably, the inlet is not lower than the lower surface of the dirt cup.

Preferably, the dust cup is positioned in the accommodating cavity.

Preferably, the secondary separation device comprises an air inlet part communicated with the outlet, an air outlet part communicated with the airflow generation device, a secondary separator communicated with the air inlet part and the air outlet part, and a dust cup communicated with the secondary separator.

Preferably, the connection channel is detachably connected with the mounting seat.

Preferably, the mounting seat is further provided with a through hole, and the through hole is communicated with the connecting channel and the secondary separation device.

Preferably, the dirt cup has a lower bottom surface for collecting dirt; the dust bucket is provided with a lower bottom surface for collecting dust, wherein the lower bottom surface is higher than the dust bucket.

Preferably, a sealing member is provided between the end cap and the separating portion.

Preferably, the dirt cup includes a conical peripheral surface.

Preferably, the connection passage passes through the dirt cup.

Preferably, the axis of the secondary separator is arranged parallel to the axis of the motor.

Preferably, a third-stage separation device is arranged between the second-stage separation device and the airflow generation device.

Drawings

Fig. 1 is a perspective view of an industrial vacuum cleaner according to the present invention.

Fig. 2 is an exploded perspective view of the industrial vacuum cleaner shown in fig. 1.

Fig. 3 is a perspective view of a mounting base of the industrial cleaner shown in fig. 1.

Fig. 4 is another angular perspective view of the mount shown in fig. 3.

Fig. 5 is a cross-sectional view of the industrial vacuum cleaner shown in fig. 1.

Fig. 6 is an exploded perspective view of the secondary separating apparatus of the industrial vacuum cleaner of fig. 1.

FIG. 7 is a further exploded perspective view of the two-stage separator device shown in FIG. 6.

FIG. 8 is a schematic view of the mounting base of the industrial cleaner of FIG. 1 removed from the dirt tray, with a portion of the dirt tray removed.

Figure 9 is a perspective view of another configuration of the dirt cup.

Figures 10 and 11 are perspective schematic and perspective exploded views of another construction of a dirt cup.

Detailed Description

Referring to fig. 1 and 2, the industrial vacuum cleaner 100 includes an air flow generating device 30, a separating device 32 communicating with the air flow generating device 30, and a dust bucket 34 for collecting dust. The lower portion of the dirt cup 34 may be mounted on a base 36, with rollers 38 disposed below the base 36 to allow the cleaner 100 to be easily moved as desired. The dust barrel 34 may be provided at an upper portion thereof with a protective cover 40, the protective cover 40 may cover the airflow generating device 30 for protecting the airflow generating device 30, and a handle 42 may be provided for facilitating movement of the vacuum cleaner 100. The industrial vacuum cleaner 100 of the present application is a name used by a habit, and is not limited to a use place thereof, and the industrial vacuum cleaner 100 can be widely applied to various places such as a room and a workshop to perform cleaning work.

Of course, the main switch 44 of the cleaner 100 may be provided on the protective cover 40. In this embodiment, the industrial vacuum cleaner is provided with a power cord 41 electrically connectable to the airflow generating device 30, and an ac power source is used to supply power to the industrial vacuum cleaner. In one embodiment, a dc power source, such as a battery pack, may also be used to supply power. The protective cover 40 is also provided with a socket 43 for supplying power to other machines. If the electric tool such as a sander, a grooving machine and the like can be inserted, the dust can be sucked when the electric tool starts to work, and the operation is very convenient.

The upper portion of the dirt cup 34 includes an opening 52 that is covered by a removable mounting 50. Here, the opening 52 is also a dust pouring opening, and when the dust bucket 34 is full of dust, the dust can be cleaned through the opening 52. The mount 50 may be secured to the dirt bucket 34 via any conventional means, such as one or more securing mechanisms 51. The plane in which the openings 52 lie can be defined as the opening plane. It will be appreciated that the dirt cup 34 and the mounting socket 50 can be sealingly mated. The sealing engagement may be a sealing engagement achieved by a form fit, i.e., a seal that is not provided but is achieved directly by a form fit of the dirt cup 34 with the mounting receptacle 50. The sealing engagement may also be a resilient engagement, i.e. the dirt cup 34 is provided with a seal between the mounting seats 50, the sealing engagement being achieved by deformation of the seal. By providing the sealing member, the sealing property can be ensured when the mounting seat 50 is assembled to the dust bucket 34, and the dust collection efficiency can be improved.

The airflow generating device 30 is disposed on the mount 50. Referring to fig. 2-4, the mounting base 50 includes a base body 54, a body 56 extending downwardly along the base body 54, wherein the base body 54 has an upper surface 58 facing away from the dirt cup 34 and a flange 60 extending downwardly along the upper surface, and a lower surface disposed rearwardly of the upper surface 58. The lower surface is provided with at least one rib 61 to increase the strength and stability of the seat body 54. The flange 60 is designed to fit over the outer surface of the upper portion of the dirt cup 34 with the body 56 extending into the dirt cup 34. In one embodiment, the body 56 includes an inner wall 64, a bottom wall 66 connected to the inner wall 64, and a receiving cavity 68. Wherein the receiving cavity 68 is adapted to receive the airflow generating device 30. The mount 50 may be made of a suitable conventional material, such as plastic or metal.

The suction duct 70 is provided on the mounting seat 50, and in this embodiment, the suction duct 70 is provided on the upper surface 58 of the mounting seat 50, and may be connected to a suction hose, a nozzle, or the like, for sucking dust. Here, the dust is a customary name only, and does not mean that the cleaner can collect only the dust. For simplicity, the dust in this embodiment is any dirt to be cleaned, such as dust generated during wall grinding, wood chips generated during wood processing, and the like. Of course, the dust suction duct 70 may be provided on the dust bucket 34.

The air flow generating device 30 generates a suction air flow required for a cleaning operation by generating a suction force at the suction duct 70 and a discharge force at the discharge port. With reference to fig. 2, 3 and 5, the airflow generating device 30 comprises a motor 72, a fan 74 driven by the motor 72, wherein the motor 72 is rotatably arranged about a motor axis X within a motor housing 76. The dirt bucket 34 extends in a lengthwise direction, and the motor axis X is parallel to the lengthwise extending axis of the dirt bucket 34.

The motor housing 76 is removably secured to the mounting 50 and may be removed with the mounting 50. In one embodiment, the motor housing 76 may be attached to the bottom wall 66 of the mounting socket 50 by fastening elements (e.g., screws). Of course, the motor housing 76 may be formed integrally with the mounting socket 50. In this context, integrally formed is to be understood as meaning a material-locking connection, for example by welding, gluing or integrally formed, for example by being produced from a cast part.

An exhaust port 78 is provided on the motor housing 76, and corresponds to the fan 74. The exhaust port 78 may be in the form of a grill, or an exhaust grill may be mounted at the exhaust port in communication with the exhaust port.

The airflow generating device 30 is at least partially received in the receiving cavity 68, i.e., at least partially extends into the dirt cup 34. The design is beneficial to improving the vibration reduction effect and reducing the noise. In one embodiment, the motor 72 extends at least partially into the dirt cup 34; in another embodiment, more than half of the length of the motor 72 in the direction of its axis X extends into the dirt cup 34, i.e., more than half of the length of the motor 72 in the direction of its axis X is below the plane of the opening.

Referring to fig. 2 and 5, in the present invention, the separation device 32 is provided with at least two stages of separation devices, including a first stage separation device 80 and a second stage separation device 82. In order to avoid the problem of airflow reduction due to dust clogging, in one embodiment, the primary separation device 80 is not provided with a screen filter. Specifically, the primary separating device 80 includes a primary separator, and in this embodiment, the dust bin 34 is used as the primary separator, and the dust bin 34 includes a sidewall 84, a receiving cavity 86, and a bottom surface 109. The sidewall 84 and the bottom surface form a receiving chamber 86, and the receiving chamber 86 communicates with the dust suction duct 70 to separate dust and collect dust.

The shape of the outer surface of the sidewall 84 may vary and is not limited to circular or conical. And the inner surface of the sidewall 84 may be cylindrical or conical. The suction duct 70 carries the dirt-laden airflow into the interior of the primary separator in a direction tangential to the side wall 84 so as to establish a vortex flow within the interior of the primary separator. This vortex is directed downwardly from the top wall within the dirt cup 34. The cyclonic action in the primary separator removes most of the entrained dust from the suction airstream and encourages the dust to settle on the lower floor 109 of the dirt cup 34.

The separation efficiency of the primary separator affects the performance of the whole machine. Generally, the whole separation efficiency of the dust collector is about 95%, and the separation efficiency of the first-stage separator is over 65%, even about 80%. If the first-stage separation efficiency is low, the dust entering the downstream separator (such as a second-stage separator) is greatly increased, so that the downstream separator (such as the second-stage separator) is not in time for separation, and the dust can be discharged; or the machine can not work normally due to the blockage phenomenon.

The diameter of the primary separator also affects the separation efficiency. If the diameter is too small, e.g., less than 200mm, the vortex velocity inside the primary separator is relatively high, instead, dust is not deposited in the dust bucket 34; it may even carry dust that has settled in the dust bucket 34 into the downstream separator, reducing the separation efficiency. If the diameter is too large, such as more than 500mm, the vortex velocity inside the primary separator is relatively reduced, which is not favorable for dust deposition, and the separation efficiency of the primary separator is reduced; the dust content entering the downstream separator increases, which results in the downstream separator (e.g., the secondary separator) being discharged in short of time; or the machine can not work normally due to the blockage phenomenon, and the performance of the whole machine is influenced.

In the present embodiment, the inner diameter of the dust barrel 34 ranges from 200mm to 500mm, that is, the diameter of the primary separator ranges from 200mm to 500 mm; or the inner circumference of the dust barrel ranges from 628mm to 1570 mm. In an alternative embodiment, the internal diameter of the dirt cup 34 is in the range of 250mm to 400mm, that is, the diameter of the primary separator is in the range of 250mm to 400 mm. The inner diameter of the primary separator may also be 300mm, 350mm, etc.

To further increase the separation efficiency, the ratio of the diameter of the primary separator to the nominal power P of the cleaner is preferably chosen. If the rated power P of the dust collector is very high and the diameter of the primary separator is too small, the eddy speed in the primary separator is relatively increased, and the dust is not easily deposited in the dust barrel 34; it may even carry dust that has settled in the dust bucket 34 into the downstream separator, resulting in inefficient separation. If the rated power P of the vacuum cleaner is low and the diameter of the primary separator is large, the vortex velocity inside the primary separator is low, and the dust is not separated and deposited in the dust bucket 34 and is carried into the downstream separator, which is not favorable for improving the separation efficiency of the primary separator.

For the dust collector, the rated power P is generally 800W-1500W. In order to improve the performance of the whole machine, the ratio range of the diameter of the first-stage separator and the rated power P of the dust collector is preferably selected to be 0.133-0.625 mm/W. In an alternative embodiment, the ratio of the diameter of the primary separator to the rated power P of the dust collector is in the range of 0.167-0.5 mm/W. In an alternative embodiment, the ratio of the diameter of the primary separator to the nominal power P of the cleaner is 0.3 mm/W.

One of the more common use environments of the dust collector is engineering environments such as decoration and the like, and as more dust is contained, the dust barrel 34 is used as the primary separator, and the proportion of the primary separator relative to the rated power P is preferably selected, so that the separation efficiency is high, the blockage is not easy to occur, and the dust collection with large suction force can be continued.

In one embodiment, the dirt cup 34 may be made of a transparent or translucent material, allowing direct observation of the dirt collection within the dirt cup through the sidewall 84 without opening the mounting receptacle 50, and determining whether the dirt needs to be dumped.

With continued reference to fig. 2 and 5, the secondary separation device 82 communicates with the primary separation device 80 via a connecting passage 88. The connecting passage 88 has a generally cylindrical portion including an inlet 90 communicating with the housing chamber 86, an outlet 92 communicating with the secondary separation device 82, and a closed conduit communicating the inlet 90 and the outlet 92. That is, there is no need for a HEPA type filter between the receiving cavity 86 of the dirt cup 34 and the secondary separating apparatus 82. But is directly communicated through the connecting passage 88, so that the design avoids the blockage between the primary separating device 80 and the secondary separating device 82, and the industrial vacuum cleaner can continuously suck dust with large suction force. Of course, the inlet 90 may be provided with a grid-type filter screen which is not easy to be blocked, so as to prevent paper dust from being sucked into a large area to cause blockage.

The bottom wall 66 of the mounting socket 50 is provided with a through hole 94. In one embodiment, the connecting passage 88 is connected to the bottom wall 66 of the mount 50, and the outlet 92 of the connecting passage 88 communicates with the through-hole 94.

In another embodiment, the connecting passage 88 may also pass through the through hole 94 to communicate with the secondary separation device 82; in another embodiment, the inlet portion of the secondary separation device 82 may also communicate with the outlet 92 of the connecting passage 88 through the through hole 94.

The connecting channel 88 can be fixedly or removably attached to the mounting base 50 and positioned within the receiving cavity 86 of the dirt cup 34. In this embodiment, the connecting passage 88 has an axis that coincides with the lengthwise extending axis of the dirt bucket 34. Of course, the connecting passage 88 may also have an axis that is offset from the longitudinal axis of the dirt cup, such as a curved axis, so that the position of the inlet 90 can be changed.

While the cylindrical portion of the connecting passage 88 may have a variable dimension, e.g., the cylindrical portion may include a decreasing cross-sectional area.

It will be appreciated that the sealing engagement between the connecting passage 88, the through bore 94 and the secondary separation device 82 may be achieved by a positive fit, or by providing a sealing member in sealing engagement. Thereby ensuring a seal between the chamber 86 and the air passage to the secondary separation device 82.

With continued reference to fig. 5, a hollow support 87 protruding into the receiving cavity 86 is disposed at one end of the connecting channel 88 communicating with the receiving cavity 86, and a floating ball 89 for sealing the inlet of the channel is disposed in the support 87. The floating ball 89 is located upstream of the secondary separation device 82 in the flow path of the air flow, i.e. the air flow first passes the location of the floating ball 89 and then flows through the connecting channel 88 to the secondary separation device 82. By arranging the floating ball 89, when the liquid is sucked by the dust collector, when the water level reaches a certain height, namely the position of the floating ball 89, the floating ball 89 moves upwards along with the rising of the water level, when the water level reaches early warning, the floating ball 89 blocks the inlet 90 of the connecting channel 88, so that the air flow cannot normally circulate, and at the moment, a user can know that the water is full through the change of the air flow; also can be through automatically controlled setting, when the connecting channel 88 is blocked up to floater 89, start the early warning through the change that detects the air current and whistle in order to remind the user that water is full, and water here is full, not only indicates the water of pure liquid, also can indicate the dust that contains flowing such as muddy water of dust.

Referring to fig. 6, in the present embodiment, the secondary separating device 82 includes an air inlet portion 96 communicated with the outlet 92, an air outlet portion 98 communicated with the airflow generating device 30, a secondary separator 99 communicated with the air inlet portion 96 and the air outlet portion 98, and a dust cup 102 communicated with the secondary separator 99 for containing dust.

Referring to fig. 6 and 7, the secondary separator 99 includes a separating portion 103 and an end cover 104 connected to the separating portion, the air inlet portion 96 is communicated with the separating portion 103, and the air outlet portion 98 is communicated with the end cover 104. In this embodiment, the cap 104 and the separating portion 103 are detachably coupled to facilitate cleaning of the internal structure. A seal 106 is provided between the end cap 104 and the separating portion 103, and a sealing engagement is achieved by deformation of the seal 106. By the design, the disassembly and the maintenance are convenient, and a good sealing space can be provided.

The end cap 104 includes an upper cap 108 and a lower cap 110, wherein the upper cap 108 and the lower cap 110 together form an outlet chamber 112 communicating with the outlet portion 98. A sealing member 106 is provided between the upper cover 108 and the lower cover 110, and the sealing member 106 is deformed to seal the both, and the both can be connected by a fastening member.

In the present embodiment, the outlet portion 98 includes a duct communicating with the outlet chamber 112; of course, the outlet portion 98 may also include at least 2 ducts communicating with the outlet chamber 112, so as to improve the dust collection efficiency.

The separating part 103 includes a plurality of separating bodies 118, each separating body 118 is provided with an inner cavity 120 penetrating the body 118, a dust inlet 122 is formed on a side wall of one end of the inner cavity 120, and a dust outlet 124 is formed at the other end of the inner cavity 120, wherein the dust inlet 122 is communicated with the air inlet part 96, the dust outlet 124 is communicated with the dust cup 102, and dust separated by the secondary separator 99 is discharged to the dust cup 102 through the dust outlet 124. The end cover 104 is provided with an air outlet pipe 114 communicated with the air outlet part, and the air outlet pipe 114 is positioned in the inner cavity 120.

A plurality of outlet ducts 114 are formed on the bottom wall of the lower cover 110. Each outlet duct 114 has a substantially cylindrical shape and projects downwardly from the bottom wall. The outlet duct 114 directs the cleaned air discharged from the secondary separator 99 to the airflow generating device 30 through the outlet chamber 112.

In this embodiment, the separating body 118 is conical. Of course, the separating body is not limited to a conical shape, but may be a cylinder. The plurality of conical separation bodies 118 are arranged about the axis Y of the secondary separator, either angularly or symmetrically about the axis Y of the secondary separator. The axis Y of the secondary separator 99 is arranged parallel to the axis X of the motor (as shown in figure 5). The secondary separator 99 and the motor 72 at least partially overlap in a direction parallel to the axis X of the motor. In one embodiment, more than about half of the length of the motor 72 overlaps the secondary separator 99 in a direction parallel to the axis X of the motor. By the design, the structure is more compact. Moreover, the air outlet portion 98 communicating with the air flow generating device 30 is substantially flush with the air flow inlet of the air flow generating device 30, which is more favorable for the air flow.

Separating portion 103 is provided with a blocking member 126, and end cap 104 and separating portion 103 are separated by blocking member 126 to form a relatively independent space. A barrier 126 abuts against the upper surface 125 of separating portion 103 and the inner diameter of flange 127 to define an air passage from air inlet portion 96 to each separating body 118, i.e., an ash chamber 128. And then flows from the ash inlet chamber 128 to each ash inlet 122. The blocking member 126 is fixed to the separating portion 103 by the fixing plate 111. The blocking member 126 is provided with a hole for the air outlet pipe 114 to pass through, and the hole and the air outlet pipe 114 are tightly matched to form a relatively sealed space.

The connecting passage 88 directs the partially cleaned air into the ash chamber 128 and generally tangentially to the ash inlet 122 of each separation body 118, causing a swirling-type or swirling flow. Dirt and dust separated by each separation body 118 is collected in the dirt cup 102 through the dirt outlet 124. Thus, the dirt cup 102 and dirt cup 34 are completely separate from each other so that the airflow in one does not affect the airflow in the other. This further improves the dust collecting efficiency of the cleaner.

Referring to fig. 2, 3 and 6, at least a portion of secondary separator device 82 is mounted to mount 50. Supported by the mounting block 50 and removable with the mounting block 50, allows the secondary separator device 82 to be easily cleaned and serviced. In the illustrated embodiment, the outer surface of at least two separate bodies 118 of the plurality of separate bodies 118 is provided with a connecting lug 130, and is connected to the bottom wall 66 of the mount 50 by a fastening element (e.g., a screw) passing through the connecting lug 130. The bottom wall 66 is further provided with a plurality of tapered cavities 132 matching the separating body 118 for receiving the other end of the separating body 118 provided with the ash outlet 124. A sealing structure is also provided between the separating body 118 and the conical cavity 132 to improve the sealing effect of the secondary separating apparatus 82.

Similarly, the intake portion 96 is also provided with attachment lugs 134, and is attached to the bottom wall 66 of the mount 50 by fastening members (e.g., screws) passing through the attachment lugs 134.

The secondary separation device 82 is at least partially received in the receiving cavity 68 and is arranged in a circular arc shape beside the airflow generating device 30, and the motor housing 76 can be at least partially received in the circular arc-shaped opening, so that the structure is more compact.

Also, referring to FIG. 5, the secondary separation device 82 extends at least partially into the dirt cup 34. The design is beneficial to improving the vibration reduction effect and reducing the noise. In one embodiment, the separating portion 103 extends at least partially into the dirt cup 34. In another embodiment, the separating portion 103 extends into the dirt tray 34, i.e., the highest point of the separating portion 103 is not located above the opening plane, and is located below the opening plane.

Referring to FIG. 8, the dirt cup 102, which surrounds or surrounds the plurality of discrete bodies 118, includes a peripheral wall 136 and a bottom wall 138. The dirt cup 102 is also provided with a dust pouring outlet 142. The dirt cup 102 can be mounted to either the mounting base 50 or the dirt cup 34. According to different installation positions, the positions of the ash pouring openings are different.

In one embodiment, the dirt cup 102 is connected to the dirt cup 34. In this manner, the dust dumping opening 142 is disposed in the same orientation as the dust dumping opening 52 of the dust bucket 34, facing the mounting seat 50. Specifically, the dust bucket 34 is provided with a support 140. The bracket 140 may extend upwardly from the bottom surface 109 of the dirt cup 34, and the bottom wall 138 of the dirt cup 102 is connected to the bracket 140 such that the dirt pouring opening 142 of the dirt cup 102 and the dirt pouring opening 52 of the dirt cup 34 are oriented in the same direction toward the base 54 of the mounting base 50. Thus, when the mounting seat 50 is detached, the dust in the dust bucket 34 and the dust cup 102 can be simultaneously disposed of, and the trouble of respectively pouring the dust is eliminated.

The dirt cup 102 can be made of a transparent or translucent material so that the dirt collected in the dirt cup 102 can be directly observed to determine whether the dirt needs to be dumped.

Of course, here, the dirt cup 102 is easily removable from the mounting cup 50 with good sealing. In one embodiment, the peripheral wall 136 of the dirt cup 102 has an outer diameter proximate the upper end of the mount 50 that is compatible with the outer diameter of the bottom wall 66 of the mount 50, and a seal (not shown) may be fitted around the bottom wall 66 of the mount 50 to form a seal between the bottom wall 66 and the peripheral wall 136. So, easily dismantle promptly, and sealed effectual.

In this embodiment, however, the dirt cup 102 has a conical outer surface with a smaller cross-section in a direction away from the mounting block. The shape of the dirt cup 102 is not limited to a conical shape, and may be a cylinder, or may be other regular or irregular shapes.

In one embodiment, the connecting channel 88 passes through the dirt cup 102, which has a centerline that coincides with the axis of the dirt cup 102. In another embodiment, the connecting channel 88 may also be formed directly on the dirt cup 102. I.e., the attachment channel 88 extends upwardly from the bottom wall 138 of the dirt cup 102 for communicating the receiving cavity 86 with the intake opening portion 96.

In another embodiment, the dirt cup 102a has a different shape and mounting. Referring to FIG. 9, the dirt cup 102a, which surrounds or encircles the plurality of tapered separating bodies 118, has a shape that fits within the separating portion 103. The dirt cup 102a is provided on its outer peripheral surface with a recess 103a for at least partially receiving the connecting passage 88a, and the inlet 90a of the connecting passage 88a is disposed closer to the mounting seat 50. The dust cup 102a includes a peripheral wall 136a and a sealing cover 160a movably disposed with respect to the peripheral wall 136 a. One end of the peripheral wall 136a near the mount 50 is attached to the body 56 of the mount 50 by a fastener (screw); the other end of the peripheral wall 136a is provided with an opening to provide a dust pouring port 142a through which dust is poured. The sealing cover 160a is movably coupled to the peripheral wall 136a to seal the dust pouring port 142 a. In one embodiment, one end of the sealing cover 160a is pivotally connected to the peripheral wall 136a, and a locking mechanism 162a is disposed between the other end and the peripheral wall 136a, such that the sealing cover 160a can be fixedly connected to the peripheral wall 136a by the locking mechanism 162a, and the dust pouring port 142a can be sealed. It will be appreciated that a sealing structure may be provided between the sealing cover 160a and the peripheral wall 136a to ensure the sealing effect of the dirt cup 102a when the sealing cover 160a is not open.

It will be appreciated that the form of the locking mechanism 162a may be varied. In the present embodiment, the locking mechanism 162a includes a fastening portion 164a disposed on the peripheral wall 136a, and an engaging portion 166a disposed on the sealing cover 160a, wherein the engaging portion 166a is provided with a fastening slot 168a, and one end of the fastening portion 164a is provided with a pressing end 170a for pressing; the other end is provided with a hook 172a matched with the clamping groove 168 a. The hooks 172a are matched with the slots 168a, so that the sealing cover 160a can be fixedly connected to the peripheral wall 136a, and the ash pouring port 142a is further sealed; when the ash needs to be poured, the mounting seat 50 is taken down, and the pressing end 170a is pressed, so that the hook 172a is disengaged from the clamping groove 168a, and the sealing cover 160a is rotated to expose the ash pouring port 142a, and the ash can be conveniently poured.

In another embodiment, referring to fig. 10 and 11, the dirt cup 102b includes a peripheral wall 136b and a sealing cover 160b movably disposed with respect to the peripheral wall 136 a. Similarly, one end of the peripheral wall 136b near the mount 50 is attached to the body 56 of the mount 50 by a fastener (screw); the other end of the peripheral wall 136b is provided with an opening to provide a dust pouring port 142b through which dust is poured. The sealing cap 160b is movably coupled to the other end of the peripheral wall 136b to seal the dust pouring port 142 b. In the present embodiment, unlike the above-described embodiments, the seal cover 160b is detachable from the peripheral wall 136b, and a lock mechanism 180b is provided between the seal cover 160b and the peripheral wall 136 b. The locking mechanism 180b can fixedly connect the sealing cap 160b to the peripheral wall 136b, thereby sealing the dust pouring port 142 b.

It will be appreciated that the form of the locking mechanism 180b may be varied, and in this embodiment, the locking mechanism 180b includes a mating groove 182b provided on the peripheral wall 136b, a protrusion 184b provided on the sealing cover 160b, and the sealing cover 160b and the peripheral wall 136b are secured to each other by the rotational mating of the protrusion 184b and the mating groove 182 b. When the ash needs to be poured, the sealing cover 160b is rotated to disengage the protrusion 184b from the engagement groove 182b, and the sealing cover 160b is removed to expose the ash pouring port 142b, so that the ash can be poured conveniently.

A sealing structure may be provided between the sealing cover 160b and the peripheral wall 136b to ensure the sealing effect of the dirt cup 102b when the sealing cover 160b is not opened.

Unlike the above-described embodiment, in the present embodiment, the connection passage 88b may be connected to the sealing cap 160b, and thus, the connection passage 88b may be conveniently maintained when the sealing cap 160b is removed. Of course, a sealing structure is provided between the connecting passage 88b and the through hole 94 (not shown) in the bottom wall 66 to ensure a sealing effect.

In the above embodiments, the connecting

passages

88, 88a, 88b and the dirt cups 102, 102a, 102b have different mounting positions and mounting methods, but it is preferable that the inlets of the connecting

passages

88, 88a, 88b are not lower than the lower surfaces of the dirt cups 102, 102a, 102 b. Here, the lower surface of the

dirt cup

102, 102a, 102b means that the

dirt cup

102, 102a, 102b faces the lower bottom surface 109 of the dirt cup 34.

If desired, three stages of separators may be provided. Which may be referred to herein as a final filter assembly 144, is provided for filtering the exhaust air flow containing any contaminants prior to its discharge into the atmosphere. With continued reference to FIG. 5, the final filter assembly 144 includes a filter element 146, the filter element 146 being located downstream of the secondary separation device 82 and upstream of the airflow generating device 30. Final filter assembly 144 focuses the flow of cleaner air from secondary separation device 82 and directs the cleaner air through filter element 146 to filter any remaining fine dust remaining in the exhaust air flow and to funnel the clean air flow into an air intake (not shown) of airflow generation device 30.

In this embodiment, with continued reference to FIG. 2, the filter element 146 is housed within a filter housing 148, the filter housing 148 being integrally formed with the motor housing 76. The filter housing 148 is matingly provided with a removable closure 150 and the filter element 146 may be supported by the closure 150 and may be removed therewith. Facilitating cleaning and maintenance of the filter element 146. Of course, a removable enclosure may be provided with the filter housing 148, such as in a hinged connection, to provide access to the clean filter element 146.

The filter element 146 may be one or more stages. Which may include at least one foam filter. Such a foam filter may be a composite assembly of a coarse foam layer and a fine foam layer. The two foam layers may be secured to each other by conventional means, if desired. Alternatively or additionally, pleated filters may be employed.

In operation, referring to FIG. 5, dirt-laden air enters the primary separating apparatus 80 through the dirt collection duct 70 in a tangential direction relative to the sidewall of the dirt cup 34. The air then establishes a vortex about the receiving cavity 86 in which many of the particles and liquid entrained in the air are caused to travel along the inner surface of the sidewall 84 by centrifugal force and to exit the rotating airflow by gravity. These particles collect on the lower floor 109 of the dirt cup 34. However, relatively light fine dust is subjected to smaller centrifugal forces. Thus, fine dust may be contained in the air flow circulating near the bottom of the dust bucket 34. Thus, a baffle may be provided in the dirt cup 34 that extends to the bottom of the dirt cup 34, and the circulating airflow strikes the baffle and resists further rotation, thereby also causing most of the fine dust entrained in the air to fall.

The partially cleaned air travels through the inlet 90 of the connecting passage 88, through the ash inlet chamber 128, and into the plurality of separation bodies 118. There, the air swirls or spirals down the inner chambers 120 of the several separating bodies 118 to separate out the remaining fine dust. The now doubly cleaned air flows up through the outlet duct 114 and into the outlet chamber 112. The fine dust separated in the secondary separator accumulates in the dirt cups 102, 102a, 102 b. The cleaned air exits the respective outlet ducts 114 and rejoins the outlet plenum 112 and enters the final filter assembly 144 through the outlet portion 98 and passes through the filter assembly 144 to be in fluid communication with the inlet of the airflow generating device 30. The cleaned air is exhausted to the atmosphere through an exhaust port in the motor housing 76.

With continued reference to FIG. 5, the dirt cup 102 and dirt bucket 34 are configured to be sealed independently of one another in a relatively sealed configuration. In this embodiment, to empty the dirt, the mount 50 is removed from the dirt cup 34 and the dirt cup 102 and dirt cup 34 can be tilted simultaneously to empty the dirt therein. Alternatively, the mounting base 50 can be removed from the dirt cup 34, dirt in the

dirt cup

102a, 102b can be poured into the dirt cup 34, and the dirt can 34 can be emptied by pouring. Alternatively, the mounting base 50 can be removed from the dirt cup 34 and the dirt in the dirt cup 34 and

dirt cups

102a, 102b can be dumped, respectively.

Most of the debris or dust will be separated in the primary separating apparatus 80 and collected in the dirt cup 34. The effective volume required for the dirt cup 34 is therefore relatively large and the effective volume required for the dirt cups 102, 102a, 102b is relatively small. In order to make it possible to almost or almost simultaneously fill the dirt cup 102 with dirt, i.e. the dirt cup 34 and the

dirt cup

102, 102a, 102b are emptied with the same frequency, the number of dust pours of the industrial vacuum cleaner is reduced. In one embodiment, the ratio of the effective volume of the dirt cup 102 to the effective volume of the dirt bucket 34 is in the range of 6 to 12. In an alternative embodiment, the ratio of the effective volume of the dirt cup 102 to the effective volume of the dirt cup 34 is in the range of 7 to 11. In an alternative embodiment, the ratio of the effective volume of the dirt cup 102 to the effective volume of the dirt bucket 34 can also be 8; 9 or 10, etc.

Here, the effective volume designates the maximum dust-containing volume of the dirt bucket 34 or dirt cup 102 in the normal operation of the cleaner. If the dust collector is blocked due to large dust loading amount or stops working due to no time for filtering and spraying dust, the dust collector is in an abnormal working state.

In one embodiment, as can be seen in FIG. 5, the dirt cup 102 is positioned within the receiving cavity 86 of the dirt tray 34, but to increase the effective volume of the dirt tray, the bottom surface 101 of the dirt cup 102 is higher than the bottom surface 109 of the dirt tray 34. By adopting the design, the effective volume of the dust barrel 34 can be increased, and the overall height of the industrial dust collector can be reduced. Here, for the sake of convenience of description, the bottom surface 101 of the dirt cup 102 may be considered as the plane in which the bottom wall 138 lies when the bottom wall 138 is ideally considered to be of an extremely small thickness. Of course, the inner surface of the bottom wall 138 of the dirt cup 102 for receiving dirt can also be defined as a bottom surface. In other embodiments, the sealing

caps

160a and 160b may be ideally designed to have an extremely small thickness, and the plane on which the sealing caps 160a and 160b are located may be the bottom surfaces of the

dirt cups

102a and 102b or the inner surfaces of the sealing caps 160a and 160b may be the bottom surfaces of the

dirt cups

102a and 102 b.

In one embodiment, the distance L between the bottom surface 101 of the dirt cup 102 and the bottom surface 109 of the dirt cup 34 is between about 50mm and 450 mm. The distance L between the lower bottom surface 101 of the dirt cup 102 and the lower bottom surface 109 of the dirt cup 34 can also be 100mm to 400 mm. The distance L between the lower bottom surface 101 of the dirt cup 102 and the lower bottom surface 109 of the dirt cup 34 can also be 150mm to 350 mm.

The ash production amount is different according to different occasions. For example, the ash production amount of a grinding machine for grinding a wall in one day is about 4L-5L. Therefore, the effective volume of the dust bucket 34 can be set to be 5L or more, can be 6L or 8L, and so on; the effective volume of the dirt cup 102 can be set to 0.8L or more, or 1L or more, such as 12.L, and so forth. Therefore, for a user, the dust collector is cleaned only once after working every day, and the use is very convenient.

It will be appreciated by those skilled in the art that the invention can be implemented in other ways, provided that the technical spirit of the invention is the same as or similar to the invention, or that any changes and substitutions based on the invention are within the protection scope of the invention.

Claims

1. An industrial vacuum cleaner, characterized in that: the industrial vacuum cleaner includes:

a dust collection duct;

the air flow generating device is used for sucking air from the dust suction duct to generate air flow and comprises a motor and a fan driven by the motor;

the primary separation device comprises a dust barrel, the dust barrel comprises an accommodating cavity, and the accommodating cavity is communicated with the dust collection conduit;

a connecting passage including an inlet and an outlet, wherein the inlet communicates with the receiving cavity;

a secondary separation device communicating the outlet and the airflow generating device.

2. The industrial vacuum cleaner of claim 1, wherein: the inner diameter of the dust barrel ranges from 200mm to 500 mm.

3. The industrial vacuum cleaner of claim 1, wherein: the inner diameter of the dust barrel ranges from 250mm to 400 mm.

4. The industrial vacuum cleaner of claim 1, wherein: the industrial dust collector has a rated power P, and the ratio range of the diameter of the primary separator to the rated power P is 0.133-0.625 mm/W.

5. The industrial vacuum cleaner of claim 1, wherein: the industrial dust collector has a rated power P, and the ratio range of the diameter of the primary separator to the rated power P is 0.167-0.5 mm/W.

6. The industrial vacuum cleaner of claim 1, wherein: the secondary separation device is provided with a dust cup for collecting dust, and the ratio of the effective volume of the dust barrel to the effective volume of the dust cup ranges from 6 to 12.

7. The industrial vacuum cleaner of claim 1, wherein: the secondary separation device is provided with a dust cup for collecting dust, and the ratio of the effective volume of the dust barrel to the effective volume of the dust cup ranges from 7 to 11.

8. The industrial vacuum cleaner of claim 1, wherein: the secondary separation device is provided with a dust cup for collecting dust, and the effective volume of the dust barrel is more than or equal to 5L; the effective volume of the dust cup is more than or equal to 0.8L.

9. The industrial vacuum cleaner of claim 1, wherein: at least one of the motor and the secondary separation device extends into the accommodating cavity.

10. The industrial vacuum cleaner of claim 1, wherein: the industrial dust collector is further provided with a mounting seat detachably connected with the dust barrel, and the airflow generating device is arranged on the mounting seat.

11. The industrial cleaner of claim 10, wherein: the mounting seat is provided with an accommodating cavity accommodated in the accommodating cavity, and the accommodating cavity at least partially accommodates the motor.

12. The industrial cleaner of claim 11, wherein: the accommodating cavity at least partially accommodates the secondary separating device.

13. The industrial cleaner of claim 10, wherein: the secondary separation device is provided with a dust cup extending into the containing cavity, the dust cup comprises a peripheral wall, one end of the peripheral wall is connected to the mounting seat, and the other end of the peripheral wall is provided with a sealing cover movably connected with the peripheral wall.

14. The industrial cleaner of claim 10, wherein: the secondary separation device is provided with a dust cup extending into the accommodating cavity, a support is arranged in the dust barrel, the dust cup is connected with the dust barrel through the support, and the dust pouring opening of the dust cup and the dust pouring opening of the dust barrel are in the same direction.

15. The industrial vacuum cleaner of claim 1, wherein: the secondary separation device comprises a secondary separator, the secondary separator comprises a separation part and an end cover connected with the separation part, the separation part comprises a plurality of separation bodies, each separation body is provided with an inner cavity penetrating through the body, an ash inlet is formed in the side wall of one end of the inner cavity, an ash outlet is formed in the other end of the inner cavity, the ash inlet is communicated with the air inlet part, and the ash outlet is communicated with the dust cup; and the end cover is provided with an air outlet pipe communicated with the air outlet part, and the air outlet pipe is positioned in the inner cavity.

16. The industrial vacuum cleaner of claim 15, wherein: the end cap and the separating part are detachably connected.