CN109351059B - Industrial centrifugal dust remover - Google Patents
Industrial centrifugal dust remover Download PDFInfo
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- CN109351059B CN109351059B CN201811553632.5A CN201811553632A CN109351059B CN 109351059 B CN109351059 B CN 109351059B CN 201811553632 A CN201811553632 A CN 201811553632A CN 109351059 B CN109351059 B CN 109351059B
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- impeller
- dust catching
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- 239000000428 dust Substances 0.000 title claims abstract description 266
- 238000007789 sealing Methods 0.000 claims description 35
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 40
- 238000004062 sedimentation Methods 0.000 description 13
- 239000002245 particle Substances 0.000 description 12
- 238000000926 separation method Methods 0.000 description 12
- 230000009471 action Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 230000006872 improvement Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 239000002912 waste gas Substances 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011044 inertial separation Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Centrifugal Separators (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to an industrial centrifugal dust remover which comprises a machine barrel, wherein an air inlet section is arranged at the lower end of the machine barrel, an air exhaust section is arranged at the upper end of the machine barrel, a rotor is arranged along the axis of the machine barrel, an air inlet impeller, a centrifugal dust catching device and an air exhaust impeller are sequentially arranged on the central shaft of the rotor along the air flow direction, the air inlet impeller is positioned in the air inlet section, the centrifugal dust catching device is positioned in the machine barrel, the air exhaust impeller is positioned in the air exhaust section, and a machine barrel dust exhaust port is tangentially connected to the circumference of the upper part of the machine barrel. The centrifugal dust catching device comprises a plurality of dust catching rings which are arranged at equal intervals, each dust catching ring is in a conical ring shape with a big upper part and a small lower part, a plurality of ribs which extend along the radial direction are uniformly distributed on the upper end surface or the lower end surface of each dust catching ring, and each rib is respectively pressed on the adjacent dust catching rings; the inner edge of each dust catching ring is respectively fixed on a central bracket, the lower end of the central bracket is fixedly connected with the back surface of the air inlet impeller, and the upper end of the central bracket is fixed on the central shaft. The dust remover has high efficiency, low manufacturing cost and operation energy consumption and convenient maintenance.
Description
Technical Field
The invention relates to a dust remover, in particular to an industrial centrifugal dust remover for separating tiny liquid drops and tiny solid particles in air, and belongs to the technical field of dust removing equipment.
Background
In many production activities, a large amount of dust and wet dust-containing waste gas are generated, especially the dust-containing wet waste gas is difficult to treat, and the environmental and peripheral personnel are harmed to different degrees, so dust collection and dust removal equipment is required to be equipped to avoid polluting the operation area and the external environment.
The conventional dust removing modes at present comprise gravity dust removing, cyclone dust removing, wet dust removing, cloth bag dust removing, electrostatic dust removing and the like. Wherein the gravity dust remover: the floor area is large, the initial investment cost is high, and the dust removing agent has an effect only on particles larger than 50 mu m, and the overall dust removing effect is poor, so that the dust removing agent is often used as pre-dust removing.
Cyclone dust collector: because the cyclone dust collector relies on inertial separation of dust particles, the dust removal efficiency is in direct proportion to the particle size, the particle size is large, the dust removal effect is good, dust with the particle size of more than 20 microns is generally treated, and the dust removal efficiency is 70% -90%; in many occasions, the dust removing effect can not meet the discharge requirement, and the dust removing device is also commonly used as a pre-dust remover.
Wet dust remover: the dust removal effect is better, but the water consumption is big, and the powder discharge pipeline is longer, and area is big simultaneously can produce waste water, and especially when the dust contains organic matter in, waste water is easy to stink, and waste water needs to be handled, and the investment is great.
A bag-type dust collector: the dust remover is very widely used, has good dust removing effect, but has large equipment investment and high maintenance cost, the cloth bag is easy to damage due to vibration and friction in the use process, and the cloth bag is easy to block and has large wind resistance and high energy consumption when the high-humidity waste gas is treated; when treating high temperature exhaust gas, fire is easy to cause.
Electrostatic precipitator: the method comprises the steps of ionizing dust into positive ions and negative ions under the action of a high-voltage electric field, adsorbing the positive ions and the negative ions on an electrode, and collecting the dust by a vibrating method. The dust remover has large volume, high voltage and high consumed electric quantity in the electric dust removing process, and can not treat waste gas containing inflammable substances.
Therefore, the conventional dust removing equipment at present has the problems of high investment, high resistance, high operation cost, low dust removing efficiency and the like. For processing type enterprises, a dust removal device which is simple and feasible and has high dust removal efficiency is needed, and the damage to the environment and surrounding personnel is avoided.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide the industrial centrifugal dust remover which has high dust removal efficiency, low manufacturing cost and operation energy consumption and convenient maintenance.
In order to solve the technical problems, the industrial centrifugal dust remover comprises a machine barrel, wherein an air inlet section is arranged at the lower end of the machine barrel, an air exhaust section is arranged at the upper end of the machine barrel, a rotor is arranged along the axis of the machine barrel, an air inlet impeller, a centrifugal dust catching device and an air exhaust impeller are sequentially arranged on the central shaft of the rotor along the air flow direction, the air inlet impeller is positioned in the air inlet section, the centrifugal dust catching device is positioned in the machine barrel, the air exhaust impeller is positioned in the air exhaust section, and a machine barrel dust exhaust port is connected on the circumference of the upper part of the machine barrel along the tangential direction.
Compared with the prior art, the invention has the following beneficial effects: the central shaft drives the air inlet impeller, the centrifugal dust catching device and the air exhaust impeller to rotate at a high speed, the suction force generated by the air inlet impeller enables dust-containing gas to enter the air inlet section, after the air inlet impeller accelerates, the dust-containing gas flows upwards along the axial direction while rotating, enters the inner cavity of the machine barrel and flows through the centrifugal dust catching device, an annular sedimentation cavity is formed between the outer edge of the centrifugal dust catching device and the inner wall of the machine barrel, the dust-containing gas is driven by the rotation of the centrifugal dust catching device to perform high-speed circular motion to generate huge centrifugal force, tiny solid particles or small liquid drops in the dust-containing gas are thrown into the sedimentation cavity under the action of the centrifugal force, finally, the dust-containing gas is discharged from the dust discharge opening of the machine barrel on the circumference of the upper part of the machine barrel, and clean gas continuously flows upwards through the centrifugal dust catching device to enter the air exhaust section and is discharged from the upper port of the air exhaust section under the action of the air exhaust impeller. In the invention, the gas passes through the air inlet impeller, the centrifugal dust collecting device and the air exhaust impeller in sequence, the rotating speed of circular motion generated in the machine barrel is high, the centrifugal force is large, the separation effect of dust and gas is good, and the dust removal efficiency is high.
As an improvement of the invention, the centrifugal dust catching device comprises a plurality of dust catching rings which are arranged at equal intervals along the axial direction of the machine barrel, and each dust catching ring is in a conical ring shape with a large upper part and a small lower part. Each dust catching ring synchronously rotates along with the central shaft at the same angular speed omega; the distance H between every two dust catching rings is only a plurality of times of the total height H of the sedimentation cavity, each dust catching ring is in a conical ring shape with a big upper part and a small lower part, dust-containing gas flows centripetally downwards along a gap between every two adjacent dust catching rings, on one hand, short flow is avoided, on the other hand, dust only needs to reach the conical wall of the dust catching ring through a short distance, primary separation with the gas is realized, and the sedimentation separation speed is greatly accelerated. In addition, when the dust collecting ring rotates at a high speed, the speed difference between the gas far away from the dust collecting ring and the dust collecting ring is larger, and the space between two adjacent dust collecting rings is small, so that the high-speed rotation of the dust collecting ring can drive the gas in a gap to rotate at the same angular speed omega as the dust collecting ring, the larger the angular speed omega of the gas rotation is, the larger the generated centrifugal force is, the dust is easy to separate out due to the action of inertia and centrifugal force, and the dust collecting efficiency is higher.
As a further improvement of the invention, the upper end face or the lower end face of each dust catching ring is uniformly provided with a plurality of dust catching ring ribs extending along the radial direction, and each dust catching ring rib is respectively pressed on the adjacent dust catching rings; the inner edge of each dust catching ring is respectively fixed on a central bracket, and the central bracket is fixed on a central shaft or between an air inlet impeller and an air exhaust impeller. Each dust catching ring is sleeved outside the central bracket to form a sheet pile structure; the ribs of each dust catching ring are pressed on the adjacent dust catching rings, so that the axial positioning of each dust catching ring is realized, and the equal spacing between the adjacent dust catching rings is ensured.
As a further improvement of the invention, the central bracket comprises a closed central cylinder, wherein a plurality of radially outwardly extending central cylinder radials are uniformly distributed on the periphery of the central cylinder, and the lower end of each central cylinder is fixedly connected to the back surface of the air inlet impeller; each dust catching ring is sleeved on the periphery of the central barrel spoke plate, at least one dust catching ring caulking groove which is inwards sunken along the axis of the dust catching ring bead is formed in the inner edge of each dust catching ring, the correspondingly widened central barrel spoke plate is embedded in the dust catching ring caulking groove, and the outer edges of the rest central barrel spokes are abutted against the inner edge of the dust catching ring. The central cylinder webs provide support for the dust collecting rings, and clean gas upward flow channels are formed between adjacent central cylinder webs. The lower port of the central cylinder can be fixed on the convex ring on the back of the air inlet impeller through the lower flange of the bracket, and can also be directly welded on the back of the air inlet impeller, so that the rigidity and strength of the central cylinder and the air inlet impeller are improved, and the axial positioning is realized together. One, two or more pairs of widened central cylinder radials are respectively embedded in the corresponding dust catching ring caulking grooves, so that the radial positioning of each dust catching ring on the central support is realized, and the relative rotation between each dust catching ring and the central support is ensured not to occur.
As a further improvement of the invention, a plurality of dust catching ring outer grooves which are concave towards the axial direction are uniformly distributed on the outer edge of each dust catching ring, and a plurality of air inlet impeller outer grooves which are concave towards the axial direction are uniformly distributed on the outer circumference of the air inlet impeller. Dust settled on the dust catching ring is gathered at the root of the dust catching ring rib under the action of centrifugal force and moves outwards centrifugally along the dust catching ring rib; the gas directly enters the gap between two adjacent dust collecting rings from the outer grooves of the dust collecting rings and flows downwards centripetally, so that not only is the resistance at the turning position of the outer edge of the dust collecting ring greatly reduced, but also the gas is opposite to the moving direction of dust, but the gas does not interfere with each other on the path, the wind resistance is reduced, and the dust removing effect is further improved. The same air flow can directly turn upwards to enter the inner cavity of the machine barrel at the outer groove of each air inlet impeller, so that the interference between the air flow and dust discharged from the dust catching ring is reduced, and the separation efficiency is improved.
As a further improvement of the invention, a sealing swivel is arranged on the rotor, the sealing swivel is positioned between the centrifugal dust catching device and the exhaust impeller, the outer edge of the sealing swivel is close to the inner wall of the machine barrel, the sealing swivel is conical with big top and small bottom, and a plurality of swivel blades are uniformly distributed on the upper end face of the sealing swivel. The sealing swivel is arranged above the dust catching ring, so that dust in the sedimentation cavity can be prevented from entering the exhaust section upwards, and clean air entering the exhaust section upwards along the outer wall of the central cylinder is prevented from being polluted again. The rotating ring blades rotate along with the sealing rotating ring to generate air flow along the direction of the blades to the outer edge, so that dust is prevented from reaching the upper end face of the sealing rotating ring or flowing centripetally along the upper end face of the sealing rotating ring more effectively.
As a further improvement of the invention, a fixed wind shielding ring is arranged between the exhaust impeller and the rotating ring blade of the sealing rotating ring, and the inner edge of the wind shielding ring extends towards the central shaft direction. The inner edge of the wind shielding ring is deeply inserted into a position close to the center seat of the air exhaust impeller, a labyrinth-like sealing structure is formed at the position, a small enough gap is kept between the upper end face of the wind shielding ring and the air exhaust impeller, a small enough gap is kept between the lower end face of the wind shielding ring and the rotating ring blades of the sealing rotating ring, no collision is caused in the operation process, and meanwhile, the small gap can reduce the amount of clean air flowing back into the machine barrel and reduce the loss of the air quantity processed by the air exhaust impeller; due to the pumping action of the sealing swivel, centripetal airflow can be generated on the upper end face of the wind shielding ring, and the lower end face of the wind shielding ring is centrifugally outward airflow, so that the possibility of dust leakage from the wind shielding ring is thoroughly eliminated.
As a further development of the invention, each dust ring is welded, riveted or otherwise fixedly connected to a central carrier, which comprises a closed central cylinder which is fixed to the rotor. Each dust catching ring is fixedly connected with the central support to form a whole pile structure with equal intervals, so that the dynamic balance of the rotor is conveniently corrected outside the machine, and the installation and the maintenance are also convenient.
As a further improvement of the invention, the center of the upper part of the air exhaust section is provided with an air exhaust section center seat, the upper end of the central shaft is fixed in the air exhaust section center seat through a bearing, and a plurality of air exhaust guide vanes are distributed between the periphery of the air exhaust section center seat and the inner wall of the air exhaust section. The exhaust guide vane not only plays a role of a reinforcing rib, but also improves the strength of the center seat of the exhaust section so as to bear the weight of the motor above and the whole rotor; but also can guide the exhaust air, reduce the flow resistance and enable the exhaust air to flow upwards along the axial direction.
As a further improvement of the invention, the upper cylinder wall of the air inlet section is conical with large upper part and small lower part and is matched with the outer edge of the air inlet impeller, the lower part of the air inlet section is cylindrical, the center of the air inlet section is provided with an air inlet section center seat, the periphery of the air inlet section center seat is connected with the cylinder wall of the air inlet section through a plurality of air inlet guide vanes, and the lower end of the central shaft is supported on the air inlet section center seat through a bearing. When the air flow enters the air inlet section, the air flow is guided by the air inlet guide vane to generate a certain rotation speed, so that the energy consumption of the air inlet impeller can be reduced; meanwhile, the air inlet guide vane also plays a role of a reinforcing rib, and the connection strength of the air inlet section and the center seat of the air inlet section is improved.
Drawings
The invention will now be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration only and are not intended to limit the invention.
Fig. 1 is a front view of a first embodiment of an industrial centrifugal dust collector of the invention.
Fig. 2 is a perspective exploded view of fig. 1.
Fig. 3 is an enlarged view of the dust ring and central support portion of fig. 2. .
Fig. 4 is a front view of the present invention in a first use state.
Fig. 5 is a perspective view of fig. 4.
Fig. 6 is a partial enlarged view of the portion a in fig. 5.
Fig. 7 is a front view of the second embodiment of the present invention.
Fig. 8 is a front view of a second embodiment of an industrial centrifugal dust collector of the invention.
In the figure: 1. a barrel; 1a, a sedimentation cavity; 1b, a dust exhaust port of the machine barrel; 2. an air inlet section; 2a, an air inlet section center seat; 2b, an air inlet guide vane; 2c, a diversion cover; 3. an air inlet impeller; 3a, an air inlet impeller outer groove; 4. a central shaft; 4a, a coupler; 5. an exhaust section; 5a, a central seat of the exhaust section; 5b, an exhaust guide vane; 5c, a protective net; 6. an exhaust impeller; 6a, inner flash of the exhaust impeller; 6b, a central seat of the exhaust impeller; 7. a dust catching ring; 7a, dust catching ring ribs; 7b, a dust catching ring caulking groove; 7c, a dust catching ring outer groove; 8. a center support; 8a, a central cylinder; 8b, a central cylinder web; 8c, a lower flange of the bracket; 8d, a flange in the bracket; 8e, a flange is arranged on the bracket; 9. a sealing swivel; 9a, rotating ring blades; 10. a wind shielding ring; 10a, a wind deflector flange; 11. a motor; 12. saxophone; 13. connecting an air pipe; 14. and an exhaust air pipe.
Detailed Description
In the following description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not mean that the system must have a specific orientation.
As shown in fig. 1 to 3, the industrial centrifugal dust remover comprises an air inlet section 2, a machine barrel 1 and an air exhaust section 5 which are sequentially connected, wherein the air inlet section 2 is connected to the lower end of the machine barrel 1, a rotor is arranged along the axis of the machine barrel 1, an air inlet impeller 3, a centrifugal dust catching device and an air exhaust impeller 6 are sequentially arranged on a central shaft 4 of the rotor along the air flow direction, the air inlet impeller 3 is positioned in the air inlet section 2, the centrifugal dust catching device is positioned in the machine barrel 1, the air exhaust impeller 6 is positioned in the air exhaust section 5, a motor 11 is arranged at the outlet of the air exhaust section 5, and the output end of the motor 11 is connected with the upper end of the central shaft 4 through a coupling 4a. An annular sedimentation cavity 1a is arranged between the outer edge of the centrifugal dust catching device and the inner wall of the machine barrel, and a machine barrel dust discharging port 1b is connected to the circumference of the upper part of the machine barrel 1 along the tangential direction.
The central shaft 4 drives the air inlet impeller 3, the centrifugal dust catching device and the air exhaust impeller 6 to rotate at a high speed, the suction force generated by the air inlet impeller 3 enables dust-containing gas to enter the air inlet section 2, after the air inlet impeller 3 accelerates, the dust-containing gas flows upwards along the axial direction while rotating, enters the inner cavity of the machine barrel 1 and flows into the centrifugal dust catching device, the dust-containing gas is driven by the rotation of the centrifugal dust catching device to perform high-speed circular motion to generate huge centrifugal force, tiny solid particles or small liquid drops in the dust-containing gas are thrown into the sedimentation cavity 1a under the action of the centrifugal force, finally the dust-containing gas is discharged from the tail end of the airflow advancing direction, namely the machine barrel dust discharge port 1b on the circumference of the upper part of the machine barrel 1, and clean gas continuously flows upwards through the centrifugal dust catching device to enter the air exhaust section 5 and is discharged from the upper port of the air exhaust section 5 under the action of the air exhaust impeller 6. In the invention, the gas passes through the air inlet impeller 3, the centrifugal dust collecting device and the air exhaust impeller 6 in sequence, the rotating speed of circular motion generated in the machine barrel 1 is high, the centrifugal force is large, the separation effect of dust and gas is good, and the dust removal efficiency is high.
The centrifugal dust catching device comprises a plurality of dust catching rings 7 which are arranged at equal intervals along the axial direction of the machine barrel, and each dust catching ring 7 is in a conical ring shape with a large upper part and a small lower part.
As shown in fig. 1, each dust catching ring 7 may have a stacked structure, and the upper end surface or the lower end surface of each dust catching ring 7 may be uniformly distributed with a plurality of dust catching ring ribs 7a extending in a radial direction, and each dust catching ring rib 7a is respectively pressed against an adjacent dust catching ring; the inner edges of the dust catching rings 7 are respectively fixed on a central bracket 8, the lower end of the central bracket 8 is fixedly connected with the back surface of the air inlet impeller 3, and the center of the upper end of the central bracket 8 is fixed on the central shaft 4. Each dust catching ring 7 can be sleeved outside the central support 8, each dust catching ring convex edge 7a is pressed on the adjacent dust catching ring, so that the axial positioning of each dust catching ring 7 is realized, and the equal interval between the adjacent dust catching rings 7 is ensured.
The central support 8 is fixed on the central shaft 4, so that when the central shaft 4 rotates, the central support 8 drives each dust catching ring 7 to synchronously rotate at the same angular speed omega; the distance H between every two dust catching rings 7 is only a fraction of the total height H of the sedimentation cavity 1a, each dust catching ring 7 is in a conical ring shape with a big upper part and a small lower part, dust-containing gas flows centripetally downwards along a gap between every two adjacent dust catching rings 7, on one hand, short flow is avoided, on the other hand, dust only needs to reach the conical wall of the dust catching ring 7 through a short distance, primary separation with the gas is realized, and the sedimentation separation speed is greatly increased.
In addition, when the dust collecting ring 7 rotates at a high speed, the speed difference between the gas far from the dust collecting ring 7 and the dust collecting ring 7 is larger, and the space between two adjacent dust collecting rings 7 is small, so that the high-speed rotation of the dust collecting ring 7 can drive the gas in a gap to rotate at the same angular speed omega almost as the dust collecting ring 7, the larger the angular speed omega of the gas rotation is, the larger the generated centrifugal force is, the dust is more easily separated out due to the action of inertia and centrifugal force, and the dust collection efficiency is higher.
The central support 8 comprises a closed central cylinder 8a, the lower part of the middle part of the central cylinder 8a can be gradually enlarged to form a bell mouth shape, a plurality of central cylinder radials 8b which radially extend outwards are uniformly distributed on the periphery of the central cylinder 8a, the lower edge of each central cylinder radials 8b and the lower port of the central cylinder 8a are connected to a support lower flange 8c, and the support lower flange 8c is fixedly connected to a flange on the back surface of the air inlet impeller 3; each dust catching ring 7 is sleeved on the periphery of the central barrel spoke 8b, at least one dust catching ring caulking groove 7b which is recessed inwards along the axis of the dust catching ring convex edge 7a is formed in the inner edge of each dust catching ring 7, the correspondingly widened central barrel spoke 8b is embedded in the dust catching ring caulking groove 7b, and the outer edges of the rest central barrel spokes 8b are abutted against the inner edge of the dust catching ring 7.
Each central cylindrical web 8b provides support for each dust collecting ring 7, and channels for the upward flow of clean gas are formed between adjacent central cylindrical webs 8b. The lower flange 8c of the bracket is fixed on the convex ring on the back surface of the air inlet impeller 3, so that the rigidity and strength of the lower flange and the convex ring are increased, and the lower flange and the convex ring are axially positioned together. One, two or more pairs of widened central cylinder webs 8b are respectively embedded in corresponding dust catching ring caulking grooves 7b, so that radial positioning of each dust catching ring 7 on the central support 8 is realized, and relative rotation between each dust catching ring 7 and the central support 8 is ensured not to occur.
The outer edge of each dust catching ring 7 can be uniformly provided with a plurality of dust catching ring outer grooves 7c which are concave towards the axial direction, and each dust catching ring outer groove 7c can be respectively positioned between the outer ends of two adjacent central cylinder radials 8b.
The outer circumference of the air inlet impeller 3 can be uniformly provided with a plurality of air inlet impeller outer grooves 3a which are concave towards the axial direction, and each air inlet impeller outer groove 3a can be respectively positioned between two adjacent air inlet blades.
Dust settled on the dust catching ring 7 is gathered at the root of the dust catching ring rib 7a under the action of centrifugal force and centrifugally moves outwards along the dust catching ring rib 7 a; the gas directly enters the gap between the two adjacent dust collecting rings 7 from the outer grooves 7c of each dust collecting ring and flows downwards centripetally, so that not only is the resistance at the turning position of the outer edge of each dust collecting ring greatly reduced, but also the gas is not interfered with each other on the path although the gas is opposite to the moving direction of dust, the wind resistance is reduced, and the dust removing effect is further improved. The air flow in the same way can directly turn upwards to enter the inner cavity of the machine barrel 1 at the outer groove 3a of each air inlet impeller, so that the interference between the air flow and dust discharged from the dust catching ring 7 is reduced, and the separation efficiency is improved.
The backboard of the air inlet impeller 3 is conical, the inclination angle of the backboard is the same as or similar to that of the dust catching ring 7, the dust catching ring convex edge 7a of the bottom layer is directly or indirectly pressed on the backboard of the air inlet impeller 3, and the center of the lower end of the backboard of the air inlet impeller is fixed on the boss of the central shaft 4. The axial fixation between the bottom dust catching ring and the air inlet impeller 3 is realized, and the bottom dust catching ring has the same sedimentation environment as the upper dust catching ring, so that the function of a sedimentation space is fully exerted.
As shown in fig. 8, each dust ring 7 may be welded, riveted or otherwise fixedly attached to a central support 8, the central support 8 comprising a closed central cylinder 8a, the central cylinder 8a being fixed to the rotor. The dust collecting rings 7 are fixedly connected with the central support 8 to form a whole pile structure with equal intervals, so that the dynamic balance of the rotor can be conveniently corrected outside the machine, and the installation and maintenance are also convenient.
The rotor is provided with a sealing swivel 9, the sealing swivel 9 is positioned between the centrifugal dust collecting device and the exhaust impeller 6, the outer edge of the sealing swivel 9 is close to the inner wall of the machine barrel 1, the sealing swivel 9 is in a cone shape with a big upper part and a small lower part, and a plurality of swivel blades 9a are uniformly distributed on the upper end face of the sealing swivel 9.
The central tube webs 8b may be stepped, and the middle part of the outer edge of each central tube web 8b may be connected to the flange 8d in the bracket, and the flange 8e on the bracket and the flange 8d in the bracket may improve the strength of the central tube web 8b, so that the central bracket 8 becomes a rigid integral structure. The upper end of the outer edge of each central tube web 8b may be attached to a bracket upper flange 8e. The sealing swivel 9 can be fixed on the flange 8d in the bracket, and the lower end surface of the sealing swivel 9 can be directly or indirectly pressed on the top dust catching ring.
The sealing swivel 9 is arranged above the dust catching ring 7, so that dust in the sedimentation cavity 1a can be prevented from entering the exhaust section 5 upwards, and clean air entering the exhaust section 5 upwards along the outer wall of the central cylinder 8a is prevented from being polluted again. Each swivel vane 9a rotates with the seal swivel 9 to generate an air flow along the vane to the outer edge direction, and dust is more effectively prevented from reaching the upper end surface of the seal swivel 9 or flowing centripetally along the upper end surface of the seal swivel 9.
A wind shielding ring 10 is arranged between the air exhaust impeller 6 and the sealing swivel 9, the wind shielding ring 10 extends along the lower end face of the air exhaust impeller 6 towards the axial direction of the central shaft 4, the outer edge of the wind shielding ring 10 can be welded on the inner wall of the machine barrel 1 or the air exhaust section 5, the wind shielding ring 10 can be formed by inwards bending the lower edge of the air exhaust section 5, a wind shielding ring flange 10a can also be arranged at the upper end of the wind shielding ring 10, and the wind shielding ring flange 10a is fixed between the upper flange of the machine barrel and the lower flange of the air exhaust section. The inner edge of the wind shielding ring 10 is deeply inserted into a position close to the central seat 6b or the central cylinder of the air exhaust impeller, a labyrinth-like sealing structure is formed at the position, a small enough gap is kept between the sealing swivel 9 and one end of the air exhaust impeller 6, no collision is caused in the operation process, and meanwhile, the small gap can reduce the amount of clean air flowing back into the cylinder and reduce the loss of the air quantity processed by the air exhaust impeller 6; due to the pumping action of the sealing swivel 9, centripetal air flow can be generated on the upper end surface of the wind deflector 10, and the lower end surface of the wind deflector 10 is centrifugally outward air flow, so that the possibility of dust leakage from the place is thoroughly eliminated.
The exhaust impeller 6 can be sleeved on the outer edge of the upper part of each central cylinder spoke plate 8b, the bottom of the exhaust impeller 6 is provided with an exhaust impeller central seat 6b, the bottom of the exhaust impeller central seat 6b is pressed at the center of the sealing swivel 9, the inner edge of the top of the exhaust impeller 6 is provided with an inward extending exhaust impeller inner flash 6a, and the exhaust impeller inner flash 6a is fixed on the support upper flange 8e. After the exhaust impeller 6 is sleeved on the upper part of the central cylinder spoke plate 8b, the inner flash 6a of the exhaust impeller is pressed on the upper flange 8e of the bracket and is fixedly connected with the flange through screws, so that the exhaust impeller 6 and the sealing swivel 9 are reliably positioned on the central bracket 8, and the integral strength is high and the rigidity is good.
The upper center of the exhaust section 5 is provided with an exhaust section center seat 5a, the periphery of the exhaust section center seat 5a is connected with the inner wall of the exhaust section 5 through a plurality of exhaust guide vanes 5b, the upper end of the central shaft 4 is fixed in the exhaust section center seat 5a through a bearing, and the outer port of the exhaust section 5 is covered with a protective net 5c. The exhaust guide vane 5b not only plays a role of a reinforcing rib, but also improves the strength of the center seat 5a of the exhaust section so as to bear the weight of the upper motor 11 and the whole rotor; but also can guide the exhaust air, reduce the flow resistance and enable the exhaust air to flow upwards along the axial direction.
The upper cylinder wall of the air inlet section 2 is conical with big top and small bottom and is matched with the outer edge of the air inlet impeller 3, the lower part of the air inlet section 2 is cylindrical, an air inlet section center seat 2a is arranged in the center of the air inlet section, the periphery of the air inlet section center seat 2a is connected with the cylinder wall of the air inlet section 2 through a plurality of air inlet guide vanes 2b, and the lower end of a central shaft 4 is supported on the air inlet section center seat 2a through a bearing. When the air flow enters the air inlet section 2, the air flow is guided by the air inlet guide vane 2b to generate a certain rotation speed, so that the energy consumption of the air inlet impeller 3 can be reduced; meanwhile, the air inlet guide vane 2b also plays a role of a reinforcing rib, and the connection strength of the air inlet section 2 and the air inlet section center seat 2a is improved.
The lower end face of the air inlet section center seat 2a is fixed with a guide cover 2c, and the head of the smooth tip of the guide cover 2c can further reduce the resistance when the air flow enters the air inlet section 2.
As shown in fig. 4 to 6, the industrial centrifugal dust collector of the invention can be vertically placed, the lower port of the air inlet section 2 is connected with the waste air pipe 14, the dust exhaust port 1b of the machine barrel is connected with the air inlet of the salon 12, and the top air outlet of the salon 12 is connected with the waste air pipe 14 through the connecting air pipe 13. The particles discharged from the dust discharge port 1b of the machine barrel enter the salon 12 for further separation and collection, the particles are discharged from the bottom outlet of the salon 12, the tail gas is discharged from the top of the salon 12, and the tail gas returns to the waste gas air pipe 14 through the connecting air pipe 13 and then enters the industrial centrifugal dust remover again for separation. The collection of fine particles is facilitated, the discharge of tail gas of the sallong is stopped, and the environment is protected; if the fine particles are expensive materials, the recovery rate of the materials can be improved, and the cost is saved.
As shown in fig. 7, the industrial centrifugal dust collector of the invention can also be horizontally placed, namely, the machine barrel 1 is horizontally placed, the air inlet section 2 is connected with the waste air pipe 14, the dust exhaust port 1b of the machine barrel is positioned at the lower part of the circumference of the machine barrel, extends out tangentially and is connected with the air inlet of the salon 12, and the top air outlet of the salon 12 is connected with the waste air pipe 14 through the connecting air pipe 13. Small particles are discharged from the dust discharge port 1b of the machine barrel along the tangential direction, enter the saxophone 12 for further separation and collection, the particles are discharged from the bottom outlet of the saxophone 12, tail gas is discharged from the top of the saxophone 12, returns to the waste gas air pipe 14 through the connecting air pipe 13, and then enters the industrial centrifugal dust remover again for separation. For gases with higher moisture content, the liquid drops are conveniently collected at the bottom of the circumference of the machine barrel 1, and then flow into the machine barrel dust discharge port 1b to be discharged.
The foregoing description is only of a preferred embodiment of the invention and is not intended to limit the scope of the invention. In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention. The technical features of the present invention that are not described may be implemented by or using the prior art, and are not described herein.
Claims (7)
1. An industrial centrifugal dust collector comprising a barrel, characterized in that: the lower end of the machine barrel is provided with an air inlet section, the upper end of the machine barrel is provided with an air exhaust section, a rotor is arranged along the axis of the machine barrel, an air inlet impeller, a centrifugal dust catching device and an air exhaust impeller are sequentially arranged on the central shaft of the rotor along the air flow direction, the air inlet impeller is positioned in the air inlet section, the centrifugal dust catching device is positioned in the machine barrel, the air exhaust impeller is positioned in the air exhaust section, and the upper circumference of the machine barrel is connected with a machine barrel dust exhaust port along the tangential direction; the centrifugal dust catching device comprises a plurality of dust catching rings which are arranged at equal intervals along the axial direction of the machine barrel, and each dust catching ring is in a conical ring shape with a large upper part and a small lower part;
the upper end face or the lower end face of each dust catching ring is uniformly provided with a plurality of dust catching ring ribs extending along the radial direction, and each dust catching ring rib is respectively pressed on the adjacent dust catching rings; the inner edges of the dust catching rings are respectively fixed on a central bracket, and the central bracket is fixed on a central shaft or between an air inlet impeller and an air exhaust impeller;
the central support comprises a closed central cylinder, a plurality of radially outwardly extending central cylinder webs are uniformly distributed on the periphery of the central cylinder, and the lower end of each central cylinder is fixedly connected to the back surface of the air inlet impeller; the dust collecting rings are sleeved on the periphery of the central barrel radials, at least one dust collecting ring caulking groove which is inwards sunken along the axis of the dust collecting ring convex edge is formed in the inner edge of each dust collecting ring, the correspondingly widened central barrel radials are embedded in the dust collecting ring caulking grooves, and the outer edges of the rest central barrel radials are abutted against the inner edge of the dust collecting ring;
the backboard of the air inlet impeller is conical, the inclination angle of the backboard is the same as that of the dust catching ring, and the dust catching ring convex edge at the bottom layer is directly or indirectly pressed on the backboard of the air inlet impeller;
the rotor is provided with a sealing swivel, the sealing swivel is positioned between the centrifugal dust catching device and the exhaust impeller and is fixed on the center support, and the lower end face of the sealing swivel is directly or indirectly pressed on the top dust catching ring.
2. The industrial centrifugal dust separator according to claim 1 wherein: the outer edge of each dust catching ring is uniformly distributed with a plurality of dust catching ring outer grooves which are sunken towards the axial direction, and the outer circumference of the air inlet impeller is uniformly distributed with a plurality of air inlet impeller outer grooves which are sunken towards the axial direction.
3. The industrial centrifugal dust separator according to claim 1 wherein: the outer fringe of sealing swivel is close to the inner wall of barrel, sealing swivel is big-end-up's coniform, and sealing swivel's up end evenly distributed has a plurality of swivel blades.
4. An industrial centrifugal dust separator according to claim 3, wherein: a fixed wind shielding ring is arranged between the exhaust impeller and the rotating ring blades of the sealing rotating ring, and the inner edge of the wind shielding ring extends towards the central shaft direction.
5. The industrial centrifugal dust separator according to claim 1 wherein: each dust catching ring is welded or riveted and fixedly connected to a central support, and the central support comprises a closed central cylinder which is fixed on the rotor.
6. The industrial centrifugal dust separator according to any one of claims 1-5 wherein: the upper center of the exhaust section is provided with an exhaust section center seat, the upper end of the central shaft is fixed in the exhaust section center seat through a bearing, and a plurality of exhaust guide vanes are distributed between the periphery of the exhaust section center seat and the inner wall of the exhaust section.
7. The industrial centrifugal dust separator according to any one of claims 1-5 wherein: the upper cylinder wall of the air inlet section is conical with big top and small bottom and is matched with the outer edge of the air inlet impeller, the lower part of the air inlet section is cylindrical, an air inlet section center seat is arranged in the center of the air inlet section, the periphery of the air inlet section center seat is connected with the cylinder wall of the air inlet section through a plurality of air inlet guide vanes, and the lower end of the central shaft is supported on the air inlet section center seat through a bearing.
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| CN114247222B (en) * | 2021-12-22 | 2022-11-22 | 常州科康环保除尘设备有限公司 | Clout antipollution circulating device for pulse cloth drum dust remover |
| CN117547920B (en) * | 2024-01-09 | 2024-04-02 | 三鑫特材(常州)股份有限公司 | Dust collector of rolling mill export |
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| SE0201982D0 (en) * | 2002-06-24 | 2002-06-24 | Alfa Laval Corp Ab | Ways to clean crankcase gas and a gas purifier separator |
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| CN102470378A (en) * | 2009-07-10 | 2012-05-23 | 阿尔法拉瓦尔股份有限公司 | Gas cleaning separator |
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| EP2735351A1 (en) * | 2012-11-23 | 2014-05-28 | Alfa Laval Corporate AB | Centrifugal separator for separating particles from a gas stream |
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