WO2012027902A1

WO2012027902A1 - Powered dust remover

Info

Publication number: WO2012027902A1
Application number: PCT/CN2010/076594
Authority: WO
Inventors: 潘雨力
Original assignee: Pan Yuli
Priority date: 2010-09-03
Filing date: 2010-09-03
Publication date: 2012-03-08

Abstract

A powered dust remover comprises an inlet end (A), an outlet end (12), a fixed chamber (10) and a rotary mechanism in the fixed chamber (10) driven by a rotary shaft. The rotary mechanism comprises at least three paddles (4), a plurality of distance pieces (8) and a support body thereof. The paddles (4) extend from inside out in the radial direction at an azimuth angle relative to the rotary shaft. The paddles (4), distance pieces (8) and the support body thereof divide the inner space of the rotary mechanism into a plurality of flow passages extending in the axial direction. Inside the flow passages, the surfaces of the paddles (4) and the distance pieces (8) facing the rotary shaft are smooth and curved ones. The distance pieces (8) at the periphery not only separate the inner space of the rotary mechanism from the fixed chamber (10), but also form dust separation slots (9) with other distance pieces (8) or the outer ends of the paddles (4). The powered dust remover has the advantages of high separation efficiency, large processing flow capacity, self cleaning, small volume and easy maintenance.

Description

Power dust collector

The invention belongs to the field of industrial environmental protection mechanical equipment, and particularly relates to the use of a power dust remover. Background technique

In the prior art, the basic principle of the dust remover using the power to remove dust is: In the rotating mechanism of the dust remover, the impeller is used to drive the dust-containing gas to rotate at a high speed, and the centrifugal force is used to achieve the separation of the dust during the rotation. Since the dust falling on the settling surface is still rotating at high speed with the system, the relative speed between it and the same rotating airflow is small, so there is no problem of secondary dusting, and the system speed can be set high, so the system Can have a higher separation factor.

Book

Although such devices have attracted many inventors, more practical devices have not been realized. The main problem is that the average separation time required for the fine dust particles in the rotating separation space is much larger than the residence time of the dust particles in this space. In the early installations, the distance from the dust particles to the edge settlement surface was large, and the axial length of the separation space was short, which made the dust particles far from the settlement surface not reach the settlement surface and was brought to the outlet end, so the dust removal device can only face the raft. Large dust particles above μ πι are separated. Based on this, the inventors have improved the above apparatus, lengthened the axial length of the separation space, and placed a spray mechanism at the inlet end to improve the separation efficiency, but for the fine dust particles in the near-axis region, the required migration to The time of the edge settlement surface is still greater than the time that the dust particles stay in the separation space. Therefore, the improved dust removal device still cannot meet the requirements, and the mud is formed inside the rotating mechanism after spraying the water mist, which needs to be frequently removed, thereby increasing the maintenance cost and reducing the maintenance cost. The efficiency of operation. Another improved device shortens the distance from which dust particles migrate to the edge settlement surface. Although this improves the separation efficiency, it reduces the effective flow cross section of the gas, resulting in insufficient throughput and limited practicality.

Therefore, in the related power-driven dust removing device, the separation efficiency due to the excessive dust deposition distance is low, and the contradiction of reducing the settling distance and causing the small flow rate of the dust removing device has become a difficult problem that has been difficult to overcome for a long time.

The relevant references are as follows:

(1) Centrifugal dust separator US Patent 3191364,

(2) Dust separator US Patent 4543111,

(3) A centrifugal separator CN ZL200410049704. 4. Summary of the invention

The object of the present invention is to solve the separation effect caused by excessive dust deposition distance in the conventional power driven dust collector. The low rate, and the reduction of the settling distance leads to the contradiction of the small flow rate of the dust removal device, and realizes a highly efficient power precipitator with a large processing flow.

In order to achieve the above object, the technical solution adopted by the present invention is: A power precipitator, which is a power driven suspension removing device, comprising an inlet end, an outlet end, a fixed cavity and a rotation driven by the shaft in the cavity mechanism. The rotating mechanism includes a blade that divides the rotating space into a plurality of narrow spaces along the axial direction, a spacer and a support thereof. The number of slabs is three or more. The blade is constructed to be inclined with respect to the radial direction, i.e., extending radially inward and outward from the inside to the outside. The front side of the paddle pushes the fluid at a high speed, and the opposite side of the paddle is a smooth curved surface toward the rotating shaft. The angle between the normal line at any point on the preferred curved surface and the perpendicular line from the point to the rotating shaft is greater than 30 ° and less than 90 °, inclined. The smooth surface collects the dust that reaches it, but does not cause the dust to accumulate on it, but instead causes the dust to collect and slide to the outside. The spacer is distributed around the rotating mechanism to form a peripheral structure thereof, and the side of the spacer facing the rotating shaft is also a smooth curved surface. Preferably, the angle between the normal line at any point on the curved surface and the perpendicular line of the point to the rotating shaft is greater than 30 ° and less than 90 °, this curved surface also makes the dust falling on it not accumulate, but slides to the outside of the rotating shaft. The spacer not only separates the internal space of the rotating mechanism from the fixed cavity, but also the outside of other spacers or blades. The tip forms a dusting slit that allows dust to escape from the interior of the rotating mechanism and reach the fixed cavity for collection. The support ensures a rigid support of the paddle or septum.

A series of inclined slabs and spacers divide the rotating space into a plurality of axially elongated narrow subspaces in which any radial axis perpendicular to the axis is intercepted by the two inner walls. The intercept is very short, and this intercept is the migration distance (or settlement distance) of the dust particles in the subspace, which is much smaller than the outer diameter of the rotating mechanism, which greatly shortens the migration distance of the dust particles and reduces The migration time increases the separation efficiency of the system, and the division of the rotating space does not substantially reduce the cross-sectional area of the total rotating mechanism, so it can maintain a high processing flow.

The separated fluid passages as described above inside the rotating space can also be subdivided, i.e., the dams are fixed on the slab or the spacer to further subdivide the internal space of the rotating mechanism. The side of the baffle facing the rotating shaft is also a smooth curved surface, and the normal line at any point on the smooth curved surface and the perpendicular angle from the point to the axis of the rotating shaft is greater than 30 ° and less than 90 °. In the actual implementation process, the front side of the blade can be welded along the axially placed bar, and the other end of the bar extends to the smooth surface of the other side of the sub-space, and forms a slit to form a set. Dust is deposited, and the slit width is l_5 mm. In the subdivided subspace, the migration distance of dust particles can be further reduced.

The division of the above-mentioned rotating space not only reduces the migration distance of the dust particles, but also reduces the turbulence generated by the airflow in the rotating space, in order to further reduce the influence of the airflow disturbance on the dust collecting on the smooth curved surface on the inner side of the pulp sheet, A smooth groove is punched or punched on the smooth surface of the inner side or the spacer, and the direction thereof extends radially from the inside to the outside along the smooth curved surface, and the groove depth is l_8 mm, and the purpose is to collect the dust in the groove. The fixed chamber at the outer end of the slide is unaffected by the gas flowing perpendicular thereto. The groove on the paddle may also be formed by fixing a plurality of spacers extending from the inside to the outside on the smooth curved surface of the paddle or the spacer. At the outer end of the blade, in order to prevent the dust particles thrown into the fixed cavity from returning to the internal rotating space, the rotating mechanism is separated from the periphery of the rotating shaft, and a plurality of spacers are used to separate the internal space of the rotating mechanism from the fixed cavity, The spacer and the blade 22 are combined to form a series of slits or slits that can be opened, so that the deposited dust is thrown into the fixed cavity through the slit, and the dust is prevented from returning to the inside of the rotating mechanism. The width of the slit is: 0. 2 - 5mm. The slit can also be open type. BP: The slit is sealed by the elastic spacer when there is no dust. When there is dust, the spacer is expanded by the centrifugal force of the dust, and the slit width of the slit is also 0. . 2 - 5mm. When the rotating mechanism rotates at a high speed, the gas is subjected to centrifugal force to generate a pressure difference between the internal rotating space and the fixed cavity, and the air pressure difference on both sides of the slit can further suppress the dust return.

There are several forms of slit construction. According to the direction in which the two groups of sheets are placed: One structure is that the spacer is placed opposite to the blade or the other spacer, and the side view is V-shaped, and the tip end faces away from the shaft. Alternatively, the segments constituting the slits have the same azimuth angle, i.e., both are inclined in one direction, and symmetrically placed for the axis of rotation, the sheets are approximately parallel.

There are also two kinds of orientations of the slit relative to the rotating shaft: one is a straight slit which is approximately parallel to the rotating shaft, and adopts a series of straight strips which are approximately parallel to the rotating shaft, and the spacers are symmetrically arranged around the rotating shaft into a circular shell shape. The long sides of each spacer are placed along the generatrix of the truncated cone, and the adjacent septum or septum and the pulp sheet form a slit that facilitates the deposition of dust. The other is an annular slit surrounding the rotating shaft, which is arranged by a truncated ring-shaped ring piece, and the separating piece is a ring body whose inner wall is symmetrically circular with respect to the rotating shaft, and the axis of the ring body coincides with the rotating shaft, and each ring has a ring shape. The spacers are offset from each other and are arranged in the axial direction, and the adjacent spacers form an annular slit surrounding the rotating shaft. The annular slit may also be helical, i.e., the two spiral ring pieces are oppositely disposed at the periphery of the rotating mechanism and spirally extended in the axial direction.

The slit is used as a port for dust collection, and is generally normally opened. The slit can be sealed by the elastic spacer at ordinary times. When the dust reaches the slit, the slit is opened by centrifugal force to precipitate. In addition, small spacers perpendicular to the direction of the airflow in the subspace may be welded to the spacers or blades constituting the slit to reduce the influence of internal airflow disturbance on the concentrated dust at the slit.

While the blade is away from the outer end of the shaft, the slit structure can prevent the dust from returning to the internal processing space, but can be omitted in several special cases to simplify the process. At this time, the outer end of the blade is regarded as a blade and a spacer. Integrally, the blade is smoothly butted together with the spacer at the end away from the rotating shaft, and all the blades are symmetrically distributed with respect to the rotating shaft. The premise that the slit structure can be omitted is: There are certain measures to prevent the deposited dust from returning to the inside of the rotating mechanism. In one case, when a water film is applied to the side wall of the rotating chamber facing the rotating chamber, the dust particles deposited from the rotating chamber are absorbed by the water film and do not fold back. In the second case, a fixed anti-back dust flap (baffle) is provided outside the rotating chamber so that the dust moves only toward the fixed cavity. In the third case, an atomizing liquid nozzle is built in the rotating cavity, and the dust particles are captured by the liquid droplets and are not folded back toward the inner wall of the fixed cavity.

The structures adopted by the present invention not only greatly shorten the migration distance of dust particles to the settlement surface, but also increase A number of smooth settlement surfaces are added. When the device rotates at a high speed, the airflow will generate a certain pressure on the settlement surfaces. If a spray mechanism is provided in the fluid passage and the atomized liquid is sprayed, it will be on these settlement surfaces. A layer of absorbing liquid film is produced. At this time, the dust removing device works in a diffusion absorbing state, and can treat harmful gases such as S0X and N0X.

The invention also utilizes a power-driven rotating device to pump the fluid. One is to achieve centrifugal pumping by using a method in which the average outer diameter of the fluid outlet end is larger than the average outer diameter of the inlet end; the other method is at the inlet end of the rotating mechanism or At the outlet end, a blade of a conventional axial fan is placed on the rotating shaft to drive fluid into or out of the processing space of the rotating mechanism.

In summary, the design principle of the present invention relies on the following four points to achieve high separation efficiency and high processing efficiency. Firstly, the inclined processing piece is used to divide the rotating processing space, which reduces the migration distance of the dust particles in each subspace, but does not reduce the total guiding section, thus achieving high separation efficiency. The treatment of large flow is ensured; secondly, the inclined smooth settlement wall is used to prevent the accumulation of dust on the dust collecting chamber, and the dust collection is directed to the dust collecting chamber of the outer fixed cavity to realize self-cleaning; third, outside the pulp sheet At the end, the slit formed by the blade and the spacer ensures that the dust separated in the internal subspace is deposited to the fixed cavity, and on the other hand, the return of the dust is suppressed, thereby further ensuring the separation efficiency of the dust removing device. Fourth, the power precipitator also integrates the pumping function of the fluid, eliminating the need to externally configure the fan, thereby reducing the volume of the entire system.

In view of the above, the beneficial effects of the present invention are as follows: The present invention solves the problem that the dust removal device in the prior art has low separation efficiency due to excessive dust deposition distance, and reduces the settlement distance and causes a contradiction problem in that the dust removal device has a small treatment flow rate. It has high separation efficiency, high processing flow, self-cleaning, compact structure and easy maintenance. DRAWINGS

Figure 1-1 is a schematic view showing the structure of the power dust collector of the embodiment of the present invention using a truncated-shaped annular spacer, that is, the embodiment 1;

Figure 1-2 is a partial enlarged view of the blade, the spacer and the slit in Figure 1-1;

2-1 is a schematic view showing a structure of a power stripper using a straight strip spacer according to an embodiment of the present invention, that is, a schematic view of Embodiment 2; and FIG. 2-2 is a half cross-sectional view of FIG.

3-1 is a schematic view showing a structure of a power dust remover using a bent-shaped blade according to an embodiment of the present invention;

3-2 is a schematic view showing a structure in which a plurality of spacers are disposed on a front surface of a slurry in a power precipitator according to an embodiment of the present invention;

3-3 is a schematic view showing a structure in which the spacers of the power precipitator are arranged in parallel according to the embodiment of the present invention, that is, a schematic diagram of Embodiment 5; FIG. 4-1 shows a blade and a spacer in the power precipitator according to the embodiment of the present invention. a structure integrated on the edge, that is, a schematic view of Embodiment 6; 4-2 is a schematic view showing the structure of the seventh embodiment of the present invention in which the blade and the spacer are combined on the edge and the inner wall of the cavity is provided with a water film;

Figure 5-1 is a schematic view showing a structure of the internal passage of the power precipitator according to the embodiment of the present invention, that is, a schematic view of Embodiment 8; Figure 5-2 is a cross-sectional view taken along line A-A of Figure 5-1;

Figure 5-3 is a partial enlarged view of I of Figure 5-1;

Fig. 6 is a schematic view showing a ninth embodiment of a special combination of the blade spacers in the power precipitator according to the embodiment of the present invention.

In the figure: A inlet end, C box body, 1 inlet channel, 2 drive space, 3 cylinders, 4 pulp sheets, 5 pulp sheets, 6 support plates, 7 smooth surfaces, 8 spacers, 9 slits, 10 fixed Chamber, 11 outlet section, 12 outlet end (Examples 1, 2),

31 pulp sheet inside, 32 fixed cavity inner wall, 33 slit, 34 dust box, 37 pulp sheet front, 3A spacer, 3B spacer apex, 3D subspace, 3E gap, 3S fixed cavity, 3P pulp, 3T guide Flow plate, 3W strip (Examples 3, 4, 5),

4a back of the pulp sheet, 4b anti-back dust fixing flap, 4c fixed cavity inner wall, 4h water film (Examples 6, 7),

5a pipe, 5b fixing ring piece, 5c ring spacer, 5F atomizing absorption liquid, 5L pulp piece inside, 5M motor, 5P spray port, 5Q pulp sheet, 5S ring seam, 5W fixed cavity inner wall, 5X shaft, 5Z collection box (Embodiment 8),

33 slits, 34 dust boxes, 61 dust guide gaps, 62 support sheets, 3A spacers, 3P pulp sheets, 3S settling chamber (Example 9). detailed description

The invention will be further described with reference to the accompanying drawings and specific embodiments, but not to be construed as limiting.

Example 1

As shown in Figures 1-1 and 1-2, an embodiment 1 of the present invention employs a truncated annular spacer on the edge of the blade. The utility model comprises: an inlet end A, an outlet end 12, a fixed cavity 10 and a rotating mechanism driven by a rotating shaft in the fixed cavity. The pulp piece 4 constituting the rotating mechanism is fixed on the supporting body cylinder 3, and is symmetrically distributed around the rotating shaft, and the slurry The sheet 4 is inclined and extended from the inner side to the outer side in a radial reverse rotation direction, and the side of the pulp sheet 4 facing the rotating shaft is a smooth curved surface 7, and the normal line at any point on the same point and the perpendicular angle between the point and the vertical axis of the rotating shaft are It is 45 ° and the angle can be in the range of more than 30 ° and less than 90 °. The projection of the smooth curved surface 7 of the paddle 4 on a cross section perpendicular to the axis of rotation is a spiral-shaped special curve. On the outer side of the blade 4, the blade 4 is connected to a series of truncated annular spacers 8, the axes of which are coincident with the axis of rotation, and the two are placed in opposite groups, and the groups are arranged end to end in the axial direction. Separating the subspace 2 and the fixed chamber 10, each set of two annular spacers 8 are offset from each other to form an annular slit 9 at the top end thereof, the slit width is 1 mm, and the side of the annular spacer 8 facing the rotating shaft is also a smooth curved surface. The angle between the normal at any point above and the perpendicular to the axis of the shaft is also 45 °, and the angle can also be in the range of more than 30 ° and less than 90 °. In order to ensure that the subspaces 2 extending in the axial direction are isolated from each other, the blade 4 is machined at the outer edge into a zigzag shape closely matched with the circular abutment spacer 8 (see Figs. 1-2). The blade 4 is not in the exit section 1 1 The circular trough annular spacer 8 forms a centrifugal fan in this section of the pulp sheet 4. Since the outer diameter of the inlet end of the power precipitator is smaller than the outer diameter of the rotary section 4 of the outlet section 11, the power precipitator can be operated against gas. Pumping. On the outside of the slit 9, there is a fixed chamber 10 for collecting dust, and below it is a tank that supports the power dust collector and collects dust.

When the motor M drives the power precipitator to rotate, due to the pumping operation of the power precipitator, the dust-containing gas enters the sub-space 2 divided by the blade 4 through the inlet channel 1, in the sub-space 2, the front side of the paddle 4 5 Pushing the gas at a high speed, the centrifugal force causes the dust particles in the gas to migrate outward in the radial direction, and reaches the smooth curved surface 7 of the adjacent blade on the other side of the subspace 2, and the relative velocity of the dust particles and the smooth curved surface 7 is small. The dust particles decelerate without violent friction on them, but still maintain a rotational speed close to that of the subspace 2, so they are not lifted up by the airflow; the dust particles do not accumulate on the smooth surface that arrives. , by the centrifugal force, it slides outward along the smooth curved surface 7 of the inclined blade 4 until the slit 9 on the edge, where the dust particles escape and are swung toward the inner wall of the fixed cavity 10, and slide along the inner wall , falls into the lower dust chamber C. Since the high-speed rotation causes the gas to generate a pressure difference in the radial direction, the air pressure inside the slit 9 is higher than the pressure in the outer fixed chamber 10, which makes it difficult for the dust particles thrown out of the slit 9 to return to the internal space.

When the dust is separated, the cleaning gas is discharged from the outlet end 12 to the power precipitator.

Example 2

As shown in Figs. 2-1 and 2-2, the second embodiment of the present invention is a power cleaner using a straight strip spacer on the edge. The utility model comprises: an inlet end A, an outlet end 12, a fixed cavity 10 and a rotating mechanism driven by a rotating shaft in the fixed cavity. The pulp piece 4 constituting the rotating mechanism is fixed on the supporting body cylinder 3, and is symmetrically distributed around the rotating shaft, and the slurry The sheet 4 is obliquely extended from the inside to the outside in a radial reverse rotation direction with respect to the rotating shaft. On the outside of the blade 4 away from the shaft, the blade 4 and a series of spacers 8 parallel to the axis of the shaft constitute a slit 9 for dusting. All of the spacers 8 are symmetrically distributed with respect to the axis of rotation, and all of the slits 9 are also symmetrically distributed to the axis of rotation. The slit 9 may be parallel to the axis of rotation or may be at a certain angle of inclination to the axis of rotation. The side of the blade 4 and the spacer 8 facing the rotating shaft is a smooth curved surface, and the angle between the normal line at any point on the point and the perpendicular line drawn from the point to the rotating shaft is also in the range of more than 30 ° and less than 90 °. The cylindrical body 3 and the outer side support plate 6 serve as a rigid support for the blade 4 in addition to the enclosed sub-space. The blade 4 is not provided with a spacer 8 at the outlet section 11 to form a slit 9. In the outlet section 11, the blade 4 is operated in a centrifugal fan state, since the outer diameter of the inlet end of the power cleaner is smaller than that of the outlet section 11 The outer diameter of the rotation, so the pump can be pumped when the device is running.

When the power precipitator rotates at a high speed, the dusty airflow is drawn into the subspace 2 through the inlet passage 1 and rotates at a high speed, and the dust particles are moved by the centrifugal force to the smooth curved surface 7 of the other side of the subspace 2, and then set. The dust slides along the smooth curved surface 7 to the outside, is thrown toward the fixed chamber 10 through the slit 9, and slides down along the inner wall thereof, and falls into the lower dust collecting chamber C. The cleaning gas is finally discharged from the power precipitator via the outlet section 11 and the outlet end 12.

Example 3

As shown in FIG. 3-1, it is a third embodiment of the power precipitator of the present invention, which is similar to the embodiment 1, and the embodiment 1 The difference is that: the edge of the embodiment 3 adopts a straight strip-shaped spacer along the axial direction, and in this structure, the blade is bent at three places by a thick metal plate, and the blade faces the side of the rotating shaft. 31 is a smooth surface, and the angle between the normal at any point on the point and the perpendicular to the axis of the shaft is also greater than 30 ° and less than 90 °. Other similarities are not described in this embodiment. When the internal mechanism rotates at a high speed, the dust particles are moved to the inner side 31 of the blade by the centrifugal force, and then the dust collects along the smooth curved surface of the inner side 31 of the blade to the outside, and is thrown toward the inner wall 32 of the fixed cavity through the outermost slit 33, and slides. Into the bottom of the dust box 34. The deflector 3T is used to guide the deposited dust to the dust box and prevent it from returning.

Example 4

As shown in Figure 3-2, the embodiment 4 of the present invention is similar to the embodiment 1. The difference is that: the edge of the embodiment 4 adopts a straight strip-shaped spacer along the axial direction, and the slurry is in the structure. The front side 37 of the sheet is welded with a series of dams 3W placed along the axial direction, and the ribs 3W extend from the front surface 37 of the slab which is located toward the back of the adjacent slab, the apex 3B of the dam 3W and the back of the adjacent slab 31 keeps a certain gap 3E is 2 mm, and other similarities will not be described in detail in this embodiment. When the internal mechanism rotates at a high speed, in the subspace 3D which is again divided by a series of bars 3W, the dust particles are centrifugally applied to the back surface 31 of the blade and the side of the bar 3W facing the rotating shaft, and along two sides. The smooth curved surface slides toward the gap 3E. At the gap 3E, the dust collecting on the dam 3W slides toward the smooth surface of the blade, and then all the dust collects along the back surface 31 of the blade to the outside, until the slit 33 at the edge. Then, it is thrown toward the inner wall 32 of the fixed cavity, and finally falls into the dust collecting box 34 at the bottom along the inner wall 32 of the fixed cavity and the deflector 3T. In the present structure, the elongated fluid passages separated by the blade 3P and the spacer 3A are further subdivided, on the one hand, the sedimentation distance of the dust particles is further reduced; on the other hand, the airflow is reduced in each channel. The turbulence and disturbances further improve the separation efficiency.

Example 5

As shown in Figure 3-3, the embodiment 5 of the present invention is similar to the embodiment 1. The difference from the embodiment 1 is that: the edge of the embodiment 5 adopts a straight strip along the axial direction, and is in the slurry. On the outer side of the sheet, the spacers 3A are sequentially arranged around the rotation axis in the circumferential direction, have the same azimuth angle and the same oblique direction, and are formed between the spacers 3A and between the spacer 3A and the blade 3P so as not to be easily precipitated in the cavity 3S. The slits returned by the dust are approximately parallel between the groups. Other similarities with Embodiment 1 This embodiment will not be described again.

Example 6

The embodiment 6 of the present invention shown in FIG. 4-1 is similar to the embodiment 1. The difference from the embodiment 1 is that: in the power precipitator, the blade and the spacer are smoothed on the edge away from the rotating shaft. The two pieces of anti-backing dust fixing fins 4b are directly thrown onto the outer sedimentation chamber after the dust collecting on the back surface 4a of the pulp sheet is slid to the edge along the smooth curved surface 4a. The fixing flap 4b has a closed shape with a large opening facing inward and a small opening facing outward to reduce the return of dust to the internal rotating space. The entire power dust collector is placed vertically, and the dust collection on the inner wall 4c of the fixed cavity is dropped by gravity and slides into the dust chamber at the bottom. Other points that are the same as those of the embodiment 1 will not be described again. Example 7

The embodiment 7 of the present invention shown in FIG. 4-2 is similar to the embodiment 1. The difference from the embodiment 1 is that: in the power precipitator, the blade and the spacer are smoothed on the edge away from the rotating shaft. The water film 4h is disposed on the sedimentation chamber wall 4c for the dust. The same as the embodiment 1 will not be described again. The entire power dust collector is placed vertically. When the internal mechanism rotates at a high speed, the dust on the back surface 4a of the blade moves along the smooth curved surface 4a to the edge, and is then thrown to the water film for 4 hours, and the mud is gravity-injected into the dust chamber at the bottom.

Example 8

Embodiment 8 of the present invention as shown in Figures 5-1, 5-2, and 5-3 is an embodiment of a spray device in a fluid passage. The power precipitator uses a series of annular spacers 5c to form a ring slit 5S, and the motor 5M drives the rotating shaft 5X to rotate the rotating mechanism at a high speed. The radius of the gas at the inlet of the rotating mechanism is smaller than the radius at the outlet, so that the power dust collector realizes the centrifugal fan. Pumping. In this apparatus, the absorbing liquid is introduced into the rotating mechanism by the pipe 5a via the fixing ring piece 5b, and it sprays the atomizing absorbing liquid 5F inside. The action of the retaining ring piece 5b, on the one hand, introduces the spray port 5P; the aspect ensures the continuity of the fluid passage in the rotating mechanism so that the gas does not directly pass into the fixed cavity. The atomized absorption liquid 5F sprayed from the spray port 5P absorbs harmful gas in the airflow, and is intercepted by the slurry 5Q on the one hand and forms a liquid film on the inner side of the slurry sheet 5L. The gas rotating at a high speed is here due to the centrifugal force. A certain pressure is formed on the liquid film, so that the harmful components in the gas are absorbed by the liquid film, and the liquid film flows by the centrifugal force along the inner side of the pulp sheet 5L to the edge, and finally is thrown to the inner wall 5W of the fixed cavity through the annular seam 5S and is transferred into the collecting box 5Z. .

Example 9

As shown in FIG. 6, the embodiment 9 of the present invention is an embodiment of a special combination of a blade and a spacer, which is similar to the embodiment 1, and differs from the embodiment 1 in that: the edge of the embodiment 9 is along the axial direction. Straight strip spacer, and in the new structure, the blade 3P is fixed on the support piece 62. When the rotating mechanism rotates around the axis, the dust particles migrate toward the settlement surface 31, and then the dust collects along the smooth curved surface to the outside. The dust-preventing gap 61 is thrown into the fixed settling chamber 3S, or the slit 33 formed by the blade 3P and the spacer 3A at the edge is thrown into the settling chamber 3S, and finally the dust falls into the dust collecting chamber 34.

In each of the above embodiments, the direction of rotation of the blade is opposite to the direction in which the blade is inclined to ensure higher efficiency when the blade is pumped by the centrifuge. The direction of rotation of the paddles can also be the same as the direction in which the blades are tilted. At this time, the system can still work and the dust removal efficiency is not greatly affected, but the pumping efficiency as a centrifuge will be greatly reduced.

The above-mentioned embodiments are only a few of the preferred embodiments of the present invention, and those skilled in the art should be included in the scope of the present invention within the scope of the present invention.

Claims

Claim

A power precipitator comprising: an inlet end, an outlet end, a fixed cavity, and a rotating mechanism driven by a rotating shaft in the fixed cavity, the rotating mechanism comprising at least three blades, a plurality of spacers and supporting thereof The blade extends from the inside to the outside in a radial direction and an azimuthal direction with respect to the rotating shaft, and the spacer is distributed around the rotating mechanism to form a peripheral structure thereof, and the blade, the spacer and the supporting body divide the internal space of the rotating mechanism into a plurality of bodies. a fluid passage extending in the axial direction, on the inner side of the fluid passage, a smooth curved surface of the blade and the spacer against one side of the rotating shaft, a normal line at any point on the smooth curved surface and a clip between the point and the vertical line drawn from the rotating shaft The angle is greater than 30 ° and less than 90 °, while the peripheral septum not only separates the internal space of the rotating mechanism from the fixed cavity, but also forms slits or openable slits with the outer ends of the other spacers or blades.

2. The power precipitator according to claim 1, wherein: a plurality of spacers separate the inner space of the rotating mechanism from the fixed cavity at a periphery of the rotating mechanism away from the rotating shaft, the spacers or the blades 2 - 5毫米。 The second and second combination of a series of slits, the width of the slit is 0. 2 - 5mm.

3. The power precipitator according to claim 1, wherein: a baffle is fixed on the blade or the spacer, the baffle for further subdividing an internal space of the rotating mechanism, the block The side of the strip facing the shaft is a smooth surface. The normal of any point on the smooth surface and the perpendicular angle between the point and the axis of the shaft is greater than 30 ° and less than 90 °.

4. The power precipitator according to claim 1, wherein: the blade is smoothly butted integrally with the spacer at a tip away from the rotating shaft, and all the blades are symmetrically distributed with respect to the rotating shaft.

The power precipitator according to claim 1, wherein the fixed chamber is provided with a water film on the inner wall of the rotating mechanism for accommodating the deposited dust.

6. The power precipitator according to claim 1, wherein: said device is provided with a spray mechanism in its fluid passage.

The power precipitator according to claim 1, wherein: the smooth surface of the blade or the spacer has a smooth groove extending in the radial direction from the inside to the outside along the settlement surface. The groove has a depth of 1 - 8 mm.

The power precipitator according to any one of claims 1 to 7, wherein: the rotating mechanism has an average outer diameter at a fluid outlet end greater than an average outer diameter at the inlet end, thereby effecting pumping of the fluid. .

The power precipitator according to any one of claims 1 to 7, wherein: the inlet end or the outlet end of the rotating mechanism is provided with a blade of an axial flow fan on the rotating shaft, and the power dust remover rotates Pumping the fluid.