阅读说明：本技术 旋风分离器及分离系统 (Cyclone separator and separation system ) 是由 刘文明 袁起民 唐津莲 于 2020-03-30 设计创作，主要内容包括：本公开涉及一种旋风分离器及分离系统。该旋风分离器包括分离器本体、进口管、以及排气管,所述分离器本体包括内筒部、外筒部、以及连接于所述外筒部下端的锥筒部,所述内筒部的外侧壁与所述外筒部的内侧壁间隔布置,所述排气管设置于所述外筒部的上端且所述排气管的下端与所述内筒部的上端间隔布置,所述进口管穿过所述外筒部并水平或斜向上切向连接于所述内筒部,所述内筒部位于所述进口管上方的部分设置有导流格栅结构,且所述外筒部的腔体的直径从上至下逐渐增大。该旋风分离器具有较高的分离效率且有利于减弱或避免出现顶灰环。(The present disclosure relates to a cyclone separator and a separation system. The cyclone separator comprises a separator body, an inlet pipe and an exhaust pipe, wherein the separator body comprises an inner cylinder part, an outer cylinder part and a cone cylinder part connected to the lower end of the outer cylinder part, the outer side wall of the inner cylinder part and the inner side wall of the outer cylinder part are arranged at intervals, the exhaust pipe is arranged at the upper end of the outer cylinder part and the lower end of the exhaust pipe and the upper end of the inner cylinder part are arranged at intervals, the inlet pipe penetrates through the outer cylinder part and is connected to the inner cylinder part in a tangential mode in the horizontal or oblique direction, the inner cylinder part is located on the part above the inlet pipe and is provided with a flow guide grid structure, and the diameter of the cavity of the outer cylinder part is gradually increased from top to bottom. The cyclone separator has high separation efficiency and is beneficial to weakening or avoiding the appearance of an ash ring.)

1. A cyclone separator is characterized by comprising a separator body (10), an inlet pipe (20) and an exhaust pipe (30), the separator body (10) comprises an inner cylinder part (11), an outer cylinder part (12) and a cone cylinder part (13) connected to the lower end of the outer cylinder part (12), the outer side wall of the inner cylinder part (11) and the inner side wall of the outer cylinder part (12) are arranged at intervals, the exhaust pipe (30) is provided at the upper end of the outer cylinder portion (12) and the lower end of the exhaust pipe (30) is arranged at an interval from the upper end of the inner cylinder portion (11), the inlet pipe (20) penetrates through the outer cylinder part (12) and is tangentially connected with the inner cylinder part (11) in the horizontal or inclined direction, the part of interior section of thick bamboo portion (11) lie in import pipe (20) top is provided with water conservancy diversion grid structure (40), just the diameter of the cavity of outer section of thick bamboo portion (12) is from last to increasing gradually down.

2. Cyclone separator according to claim 1, characterized in that the angle of the inner wall of the outer drum (12) to the vertical is 5 ° -30 °.

3. The cyclone separator according to claim 1 or 2, characterized in that the outer cylinder (12) is a hollow truncated cone structure with a small upper end and a large lower end.

4. The cyclone separator according to claim 1, wherein the guide grid structure (40) comprises grid holes (41) and guide plates (42), the side wall of the inner cylinder (11) is circumferentially provided with holes at intervals to form the grid holes (41), one end of each guide plate (42) is fixedly connected to the outer side wall of the inner cylinder (11), and the other end of each guide plate extends along the same direction as the rotating airflow rotating direction in the inner cylinder (11) and forms an included angle with the tangential direction of the rotating airflow.

5. Cyclone separator according to claim 1 or 4, characterized in that the diameter of the inner cylinder (11) is smaller than the diameter of the large end of the cone (13), the lower end of the inner cylinder (11) extends inside the cone (13), the inlet pipe (20) is connected horizontally and tangentially to the part of the inner cylinder (11) inside the outer cylinder (12), and the part of the inner cylinder (11) inside the cone (13) is also provided with the flow guiding grid structure (40).

6. Cyclone separator according to claim 5, characterized in that it further comprises an inner vortex limiter (50) and a locking structure (60), the inner vortex limiter (50) being movably arranged in the cone (13) along the centre axis of the cone (13) for adjusting the length of the inner vortex inside the cyclone separator, the locking structure (60) being adapted to axially lock the inner vortex limiter (50) in the cone (13).

7. The cyclone separator according to claim 6, characterized in that the inner vortex limiter (50) comprises a circular flat plate (51) and a mounting rod (52), the upper end of the mounting rod (52) is connected to the bottom surface of the circular flat plate (51), and the lower end of the mounting rod (52) is movably connected to the cone portion (13).

8. The cyclone separator according to claim 7, characterized in that the diameter of the circular flat plate (51) is the same as the diameter of the inner cylindrical part (11) and both are arranged coaxially.

9. The cyclone separator as claimed in claim 7 or 8, further comprising a support member (70), wherein the support member (70) comprises a sleeve (71) and support rods (72) arranged around the sleeve (71) at intervals, two ends of the support rods (72) are respectively connected to the inner wall of the cone portion (13) and the sleeve (71), and the mounting rod (52) is axially movably sleeved on the sleeve (71).

10. The cyclone separator as claimed in claim 9, wherein the locking structure (60) comprises a locking rod (61) and a threaded hole (72) formed on the sleeve (71), the locking rod (61) is provided with an external thread section which is in threaded fit with the threaded hole (72), one end of the locking rod (61) is used for abutting fit of the mounting rod (52), and the other end of the locking rod (61) protrudes out of the outer wall of the cone part (13).

11. The cyclone separator as claimed in claim 1, further comprising an ash discharge hopper (80) and a valve (90), wherein the ash discharge hopper (80) is connected to the lower end of the cone portion (13), an ash inlet of the ash discharge hopper (80) is communicated with a lower end opening of the cone portion (13), and the valve (90) is located between the cone portion (13) and the ash discharge hopper (80).

12. A separation system comprising a cyclone separator according to any one of claims 1-11.

Technical Field

The present disclosure relates to the field of separation devices, and in particular, to a cyclone separator and a separation system having the same.

Background

The cyclone separator is a separating device for separating gas and solid particles, and is widely applied to industries of petroleum, chemical industry, coal, electric power, environmental protection and the like. Because the environmental protection requirement is increasingly strict, the requirement for separating ultrafine dust in industry is also increasingly high, the collection efficiency of the cyclone separator for 5-10 particles is often required to be 100%, and the cyclone separator is also required to have lower pressure drop. Therefore, the high-efficiency low-resistance cyclone separator has wide application prospect.

The conventional cyclone separator is of a cylindrical conical structure and comprises an inlet pipe, an exhaust pipe, a cylinder body, a conical cylinder body, an ash discharge hopper and the like. When in operation, the working principle is as follows: the gas flow containing solid particles enters the cyclone separator through the top gas inlet in a tangential direction, and high-speed rotating flow is formed in the cyclone separator due to the high tangential speed. Under the action of centrifugal force, solid particles in the air flow are thrown to the side wall, rotate downwards to flow through the conical cylinder body and are discharged through the ash discharge hopper, a small amount of gas and the solid particles are discharged from the ash discharge hopper at the bottom, most of gas converges at the axis due to the fact that the flowing cross section is continuously reduced, rotates upwards along the axis of the cyclone separator and is discharged from the top exhaust pipe, and therefore gas-solid separation is achieved.

Most cyclone import pipe all adopts the barrel top mode of admitting air, and this kind of mode of admitting air can have the commonality problem, and there is the top ash ring at the separator top promptly, and there is the short-circuit flow in blast pipe department, and inevitable can produce two whirlpools, and the pressure drop is big, the energy consumption is high. The invention patent CN1084104A discloses a cyclone liquid-solid separator, which avoids the direct contact of the vortex between the inner and outer cylinders and greatly reduces the pressure drop by adding an inner cylinder in the outer cylinder and the inlet pipe from the bottom of the inner cylinder to feed air. However, most of the airflow and solid particles in the scheme are discharged from the annular gap between the top of the inner cylinder and the top of the outer cylinder, an ash jacking ring is formed, and meanwhile, the particles collide with the outer cylinder due to high-speed airflow and are ejected from the exhaust pipe, so that the separation efficiency is reduced.

Disclosure of Invention

It is an object of the present disclosure to provide a cyclone separator and a separation system having the same that has a high separation efficiency and that can facilitate the reduction or avoidance of an ash ring.

In order to achieve the above object, the present disclosure provides a cyclone separator, including separator body, import pipe and blast pipe, the separator body includes interior section of thick bamboo portion, outer section of thick bamboo portion and connect in the awl section of thick bamboo portion of outer section of thick bamboo portion lower extreme, the lateral wall of interior section of thick bamboo portion with the inside wall interval arrangement of outer section of thick bamboo portion, the blast pipe set up in the upper end of outer section of thick bamboo portion just the lower extreme of blast pipe with the upper end interval arrangement of interior section of thick bamboo portion, the import pipe passes outer section of thick bamboo portion and level or oblique upward tangential connection in interior section of thick bamboo portion, interior section of thick bamboo portion is located the part of import pipe top is provided with the water conservancy diversion grid structure, just the diameter of the cavity of outer section of thick bamboo portion is from last to increasing gradually down.

Optionally, the angle between the inner wall of the outer cylinder part and the vertical direction is 5-30 degrees.

Optionally, the outer cylinder portion is a hollow circular truncated cone structure with a small upper end and a large lower end.

Optionally, the flow guide grid structure includes a grid hole and a flow guide plate, a circumferential interval hole is formed in the side wall of the inner cylinder portion to configure the grid hole, one end of the flow guide plate is fixedly connected to the outer side wall of the inner cylinder portion, and the other end of the flow guide plate extends in the same direction as the rotating direction of the rotating airflow in the inner cylinder portion and forms an included angle with the tangential direction of the rotating airflow.

Optionally, the diameter of the inner cylinder part is smaller than that of the large end of the cone cylinder part, the lower end of the inner cylinder part extends into the cone cylinder part, the inlet pipe is connected to the inner cylinder part in the outer cylinder part in a horizontal tangential direction, and the part of the inner cylinder part in the cone cylinder part is also provided with the flow guide grid structure.

Optionally, the cyclone separator further comprises an inner vortex limiter movably arranged in the cone part along the central axis of the cone part to adjust the length of the inner vortex inside the cyclone separator, and a locking structure for axially locking the inner vortex limiter in the cone part.

Optionally, the inner vortex limiter comprises a circular flat plate and a mounting rod, an upper end of the mounting rod is connected to a bottom surface of the circular flat plate, and a lower end of the mounting rod is movably connected to the cone portion.

Optionally, the diameter of the circular flat plate is the same as the diameter of the inner cylinder and the circular flat plate and the inner cylinder are coaxially arranged.

Optionally, the cyclone separator further includes a support member, the support member includes a sleeve and support rods disposed around the sleeve at intervals, two ends of the support rods are respectively connected to the inner wall of the cone portion and the sleeve, and the mounting rod is axially movably sleeved on the sleeve.

Optionally, the locking structure includes the locking pole and forms screw on the sleeve, have on the locking pole with screw thread fit's external screw thread section, the one end of locking pole is used for the cooperation is supported to the installation pole, the other end protrusion of locking pole with the outer wall of awl section of thick bamboo portion.

Optionally, the cyclone separator further comprises an ash discharge hopper and a valve, the ash discharge hopper is connected to the lower end of the cone cylinder part, an ash inlet of the ash discharge hopper is communicated with an opening at the lower end of the cone cylinder part, and the valve is located between the cone cylinder part and the ash discharge hopper.

In the cyclone that this disclosure provided, the water conservancy diversion grid structure can play two effects, can increase the radial velocity of gas and granule on the one hand to produce the efflux effect, make the granule to the inner wall gathering of urceolus, and move towards the ash bucket under air current and dead weight, promoted solid gas efficiency. On the other hand, because the diversion grid structure shunts partial gas and particles, high-concentration gas and particles cannot be gathered at the top of the outer cylinder part, an ash jacking ring can be avoided being formed, and the pressure drop is reduced.

Because the inner wall of the outer barrel part adopts the inclined plane design, the device has a downward flow guiding effect on gas and particles, and when the particles act on the inner wall of the outer barrel part from the inner barrel part, the particles can be prevented from being ejected upwards, so that the concentration of the particles at the upper end of the outer barrel part is prevented from being increased due to the upward rebounding particles, and the device is favorable for preventing an ash ejecting ring from being formed at the top end of the outer barrel part. Moreover, the inclined plane structure can increase the speed of particles in the vertical direction, so that the particles can be discharged from the lower end of the conical cylinder part in time, and the separation efficiency of the cyclone separator on the particles and fluid can be improved.

In addition, due to the air inlet mode of the inlet pipe from the lower part of the inner cylinder part, especially when the inlet pipe is arranged in the inclined upward direction, most of air flow rotates and moves upwards, the rotating contact of the inner vortex and the outer vortex of the cyclone separator is weakened or avoided to a certain extent, and therefore the pressure drop caused by the interference of the inner vortex and the outer vortex can be reduced.

According to another aspect of the present disclosure, there is provided a separation system comprising a cyclonic separator as described above.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the attached drawings

FIG. 1 is a schematic front perspective view of a cyclone separator according to an embodiment of the present disclosure;

FIG. 2 is a top cross-sectional view of a flow-directing grid construction of a cyclone separator according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram comparing the separation efficiency of a cyclone separator of one embodiment of the present disclosure with a conventional cyclone separator;

FIG. 4 is a schematic diagram comparing pressure drop of a cyclone separator of an embodiment of the present disclosure with a conventional cyclone separator.

FIG. 5 is a schematic front perspective view of a cyclone separator according to another embodiment of the disclosure, wherein the locking structure is not shown;

FIG. 6 is a schematic bottom view of an inner vortex limiter of a cyclone separator according to another embodiment of the disclosure;

FIG. 7 is a schematic view, partly in section, of a cyclone separator according to another embodiment of the disclosure, showing an internal vortex limiter and a locking arrangement;

fig. 8 is a schematic top view of a support for a cyclone separator according to another embodiment of the present disclosure.

Description of the reference numerals

10-a separator body; 11-an inner cylinder portion; 12-an outer barrel portion; 121-inner wall of outer cylinder; 13-a cone section; 20-an inlet pipe; 30-an exhaust pipe; 40-a flow-guiding grid structure; 41-grid holes; 42-a flow guide plate; 50-internal vortex limiter; 51-circular flat plate; 52-mounting a rod; 60-a locking structure; 61-a locking lever; 70-a support; 71-a sleeve; 72-a support bar; 80-ash discharge hopper; 90-a valve; 100-bracket.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise indicated, the use of directional terms such as "upper" and "lower" are generally defined based on the orientation of the drawing figures, and specifically refer to the orientation of the drawing figures as shown in fig. 1 and 5. The term "inner and outer" refers to the inner and outer parts of the relevant component.

Through research on the distribution of a particle flow field in the cyclone separator, the particles in the airflow are driven by three directions of speed, namely radial speed from the center of the cyclone separator to the side wall, tangential speed generated by airflow rotation (centrifugal force is generated), and axial speed of the airflow vertically downward. Currently, many expert scholars are based primarily on the idea of enhancing the tangential velocity of the gas stream to create a stronger centrifugal force to optimize the improved cyclone separator.

However, the applicant has found that by sufficiently increasing the radial velocity of the gas stream to cause the particles to flow towards the wall surface, the efficiency of the separator can also be increased and a cyclone separator with a higher separation efficiency can be designed.

As shown in fig. 1, 2, 5 to 8, the present disclosure provides a cyclone separator including a separator body 10, an inlet pipe 20, and an exhaust pipe 30. Wherein, the separator body 10 comprises an inner cylinder part 11, an outer cylinder part 12, and a cone cylinder part 13 connected to the lower end of the outer cylinder part 12, the outer side wall of the inner cylinder part 11 and the inner side wall of the outer cylinder part 12 are arranged at intervals, and optionally, the inner cylinder part 11 and the outer cylinder part 12 are coaxially arranged. The exhaust pipe 30 is arranged at the upper end of the outer cylinder part 12, the lower end of the exhaust pipe 30 and the upper end of the inner cylinder part 11 are arranged at intervals, the inlet pipe 20 penetrates through the outer cylinder part 12 and is connected to the inner cylinder part 11 in a tangential manner in the horizontal or inclined direction, the part of the inner cylinder part 11, which is positioned above the inlet pipe 20, is provided with a flow guide grid structure 40, and the diameter of the cavity of the outer cylinder part 12 is gradually increased from top to bottom, namely the cavity is gradually increased from the upper end to the lower end of the outer cylinder part 12 and is in a horn shape with a small top and a large bottom.

Generally, the cyclone separator further comprises an ash discharge hopper 80, the ash discharge hopper 80 is connected to the lower end of the cone part 13, and an ash inlet of the ash discharge hopper 80 is communicated with the lower end opening of the cone part 13.

In the cyclone provided by the present disclosure. When the cyclone separator starts to operate, a fluid (gas or liquid, for convenience of description, gas will be taken as an example hereinafter) carrying particles enters the inner cylindrical portion 11 from the inlet pipe 20, since the inlet pipe 20 is inclined horizontally or obliquely upward, at least a part of the air flow makes an upward swirling flow in the inner cylindrical portion 11, under the push of the high-speed airflow, the particles are thrown to the inner wall of the inner cylinder part 11 by centrifugal force, and after the airflow reaches the position of the inner cylinder part 11 where the flow guide grid structure 40 is arranged, part of the particles and gas pass through the flow guiding grid structure 40 into the annular gap between the outer barrel 12 and the inner barrel 11, the particles collide with the inner wall 121 of the outer cylinder 12, and the particles will flow downward with the gas, enter the cone 13, and are discharged through the ash discharge hopper 80.

Further, the upper end of the inner cylindrical portion 11 is spaced apart from the exhaust pipe 30. When the gas and particles in the inner cylindrical portion 11 rise to the top end of the inner cylindrical portion 11, the swirling gas flows out of the exhaust pipe 30, and the particles are thrown against the inner wall of the outer cylindrical portion 12 by the centrifugal force and the self gravity and are discharged through the ash discharge hopper 80.

Here, the flow guiding grid structure 40 can serve two functions, on one hand, the radial velocity of the gas and particles can be increased, so that a jet effect is generated, the particles are gathered towards the inner wall of the outer cylinder 12 and move towards the ash discharge hopper 80 under the action of the gas flow and the self weight, and the gas fixation efficiency is improved. On the other hand, because the diversion grid structure 40 diverts part of the gas and particles, high-concentration gas and particles are not gathered at the top of the outer cylinder part 12, so that the formation of an ash ring can be avoided, and the pressure drop is reduced. Here, the flow guiding grid structure 40 also serves to guide the flow of the fluid and the particles.

As shown in fig. 1 and 5, since the inner wall 121 of the outer cylinder 12 is designed to be an inclined plane, which has a downward flow guiding effect on gas and particles, when the particles act on the inner wall 121 of the outer cylinder 12 from the inner cylinder 11, the particles can be prevented from being ejected upward, thereby preventing the particles at the upper end of the outer cylinder 12 from being increased in concentration due to the upward-moving particles, and being beneficial to preventing the top end of the outer cylinder 12 from forming an ash-pushing ring. Moreover, the inclined plane structure can increase the speed of particles in the vertical direction, so that the particles can be discharged from the lower end of the conical cylinder part 13 in time, and the separation efficiency of the cyclone separator on the particles and fluid can be improved.

In addition, due to the manner that the inlet pipe 20 feeds air from the lower part of the inner cylinder part 11, especially when the inlet pipe 20 is arranged obliquely upwards, most of the air flow rotates upwards, which is beneficial to weakening or avoiding the rotating contact of the inner vortex and the outer vortex of the cyclone separator to a certain extent, thereby reducing the pressure drop caused by the interference of the inner vortex and the outer vortex.

In addition, in the present disclosure, the cyclone separator corresponds to three separation spaces, i.e., a separation space located inside the inner cylinder 11, a separation space of an annular gap between the inner cylinder 11 and the outer cylinder 12, and a separation space inside the cone 13, and the multi-stage separation is advantageous to improve the separation effect.

In the present disclosure, the degree of inclination of the inlet pipe 20 from the horizontal direction is not limited, and alternatively, the angle may be 0 to 30 ° and may be 0 °, that is, the inlet pipe 20 is horizontally arranged at this time.

In addition, the present disclosure does not limit the angle between the inner wall of the outer tube portion 12 and the vertical direction. Because the angle is too small, the effect of draining particles and airflow towards the lower end of the outer barrel part 12 cannot be achieved, the particles collide with the outer wall of the inner barrel part 11 after rebounding due to the too large angle, the direction of the particles is disordered, downward drainage of the particles is not facilitated, and the speed of the particles in the vertical direction is not increased. Alternatively, in one embodiment of the present disclosure, the angle may be 5 ° to 30 °, in which the particles can be more rapidly guided toward the cone portion 13 and are less likely to collide with the inner cylinder portion 11, thereby improving the separation efficiency.

In the present disclosure, the overall shape of the outer tube 12 is not limited as long as the side wall of the inner space thereof is configured to be inclined so as to guide the flow of the particles and the gas downward. Alternatively, as shown in fig. 1 and 5, the outer cylindrical portion 12 may have a hollow circular truncated cone structure with a small upper end and a large lower end. Thus, the inner wall 121 of the outer tube 12 and the outer wall thereof are parallel inclined surfaces, and the processing is convenient. In other embodiments of the present disclosure, the outer cylindrical portion 12 may be a straight cylindrical portion having an inner wall with an inclined surface and an outer wall with a vertical surface.

As shown in fig. 1 and 5, in the present disclosure, the inner cylindrical part 11 may be disposed inside the outer cylindrical part 12 in a suitable manner to maintain stability. Alternatively, the inner cylindrical portion 11 is connected to the outer cylindrical portion 12 via the bracket 100, or the inner cylindrical portion 11 is connected to the tapered cylindrical portion 13 via the bracket 100 to be fixed. The present disclosure does not limit the structure of the bracket 100, for example, the bracket 100 may be a link, one end of which is welded or screwed to the outer wall of the inner cylindrical portion 11, and the other end of which is welded or screwed to the inner wall of the outer cylindrical portion 12 or the conical cylindrical portion 13.

In the present disclosure, the specific structure and shape of the lattice structure are not limited. Alternatively, as shown in fig. 2, the flow guiding grid structure 40 may include grid holes 41 and flow guiding plates 42, the inner cylinder 11 is circumferentially spaced and perforated to form the grid holes 41, one end of the flow guiding plate 42 is fixedly connected to the outer side wall of the inner cylinder 11, and the other end extends along the same direction as the rotating airflow rotating direction in the inner cylinder 11 and forms an angle with the tangential direction of the rotating airflow. Thus, when the airflow flows out of the inner cylinder part 11 from the grating holes 41, the fluid and the particles flow towards the inner wall of the outer cylinder part 12 along a certain flow path under the action of the deflector 42, and the particles are divided. In other words, by arranging the grid holes 41 and the guide plates 42 to cooperate with each other, the particles inside the inner cylinder 11 can flow out through the grid holes 41, and under the flow guiding action of the guide plates 42, the particles are effectively collected inside the cone 13.

Here, specific degrees of the angle of the rotating airflow in the offset inner cylindrical portion 11 of the baffle plate 42 are not limited, and the offset angle of the baffle plate 42 may be any appropriate value from 0 ° to 90 °.

The appropriate deflection angle of the deflector 42 helps to create strong tangential and radial velocities that facilitate the flow of particles toward the inner wall 121 of the outer barrel 12. Alternatively, in one embodiment of the present disclosure, the deflection angle of the baffle 42 may be 10 ° to 60 °, for example, may be 30 °. Applicants have discovered that this range of angles facilitates increasing the tangential and radial velocities of the gas streams exiting the grid apertures 41 and facilitates the flow of particles toward the wall.

In addition, the present disclosure does not limit the shape and size of each grating hole 41. Alternatively, as shown in fig. 1 and 5, the grating holes 41 may be rectangular structures with the axial sides being long sides, and the width of the grating holes is about 3 mm. The smaller grid hole width is beneficial to forming high-speed jet flow, and simultaneously can prevent particles in the air flow from colliding with the inner wall of the outer cylinder part 12 and then entering the inner cylinder part 11 through the grid holes 41 again.

Further, as shown in fig. 1 and 5, the flow guiding grid structures 40 may be provided in multiple sets, and the multiple sets of flow guiding grid structures 40 may be arranged at intervals along the axial direction of the inner cylinder portion 11. Thus, the effect of distributing the particles in the inner cylinder 11 can be improved as much as possible. Alternatively, in one embodiment of the present disclosure, the number of sets of flow grid structures 40 may be 2-5 sets.

In the present disclosure, the number of the grating structure groups is not limited, and may be any appropriate number of groups such as 2 groups, 3 groups, 4 groups, and the like, in consideration of the length of the inner tube portion 11 located above the inlet tube 20.

In other embodiments of the present disclosure, the air guiding grid structure 40 may be a plurality of inclined plates disposed in parallel at intervals, a larger opening is disposed at a corresponding position of the inner cylinder 11, and the upper and lower ends of the plurality of inclined plates are respectively connected to the upper and lower sides of the opening, so that the inclined plates are disposed at intervals, thereby configuring the air guiding grid structure 40, and the air flow can flow out from between two adjacent inclined plates.

Fig. 3 and 4 respectively compare the separation efficiency and pressure drop of the cyclone separator of the present disclosure with those of the conventional cyclone separator at different inlet gas velocities, and it can be seen from the graphs that the separation efficiency of the cyclone separator of the present disclosure is improved by 2% -5% compared with that of the conventional cyclone separator, the pressure drop is reduced by about 20%, and the advantages of the separation efficiency and the pressure drop are more obvious at high gas velocities.

As shown in fig. 5, in another embodiment of the present disclosure, the diameter of the inner cylinder 11 is smaller than the diameter of the large end of the tapered cylinder 13, the lower end of the inner cylinder 11 extends to the inside of the tapered cylinder 13, the inlet pipe 20 is connected to the portion of the inner cylinder 11 located inside the outer cylinder 12 in a horizontal and tangential direction, and the portion of the inner cylinder 11 located inside the tapered cylinder 13 is also provided with the above-mentioned flow grid structure 40.

Thus, since the inlet tube 20 is horizontally connected to the inner cylindrical portion 11, there is at least a portion of the air stream that is rotationally moved downward after the air stream containing particles enters the inner cylindrical portion 11. Because the diameter of the inner cylinder part 11 is smaller than that of the large end of the cone cylinder part 13, the inner cylinder part 11 with the small diameter can be used as an acceleration zone of particles and fluid, so that the particles and the fluid have higher tangential and radial velocities, and the solid-gas separation efficiency is higher.

Moreover, due to the addition of the flow guide grid structure 40, when the cyclone separator starts to work, the airflow carries particles to enter the inner cylinder part 11 from the inlet pipe 20, part of the airflow makes downward rotating flow in the inner cylinder part 11, the particles are thrown to the inner wall of the inner cylinder part 11 by centrifugal force under the pushing of high-speed airflow, the particles are accelerated to flow downward under the action of gravity, after reaching the flow guide grid structure 40 at the bottom of the inner cylinder part 11, part of the particles and the gas enter the cone part 13 through the flow guide grid structure 40, and rotate and flow along the direction of grid flow guide and shoot to the inner wall of the cone part 13, and after colliding with the cone part 13, the particles can rotate and flow downward along with the gas and are discharged out of the ash discharge hopper 80.

Also, the flow guiding grid structure 40 can serve two functions, on one hand, to increase the radial velocity of the gas and particles, thereby generating a jet effect to facilitate the collection of particles at the lower end of the cone portion 13. On the other hand, most particles flow out through the grid holes 41, so that partial particles are shunted, the concentration of the particles at the outlet at the lower end of the conical cylinder part 13 is reduced, and therefore, high-concentration particles cannot be gathered at the bottom of the conical cylinder part 13, the probability of rebound upward of the particles is greatly reduced, the risk that the rebound upward particles are mixed with the fluid again is avoided, and the separation efficiency of the cyclone separator on the particles and the fluid is further improved. Here, the flow guiding grid structure 40 also serves to guide the flow of the fluid and the particles.

In addition, since one end (lower end as shown in fig. 2) of the inner cylindrical portion 11 extends to a certain height inside the conical cylindrical portion 13, the jet action of the particles can be intensified, and thus a rapid decrease in the air flow velocity due to the enlargement of the diameter of the conical cylindrical portion 13 can be avoided.

Optionally, as shown in fig. 5 and 7, the cyclone separator further includes an inner vortex limiter 50 and a locking structure 60, the inner vortex limiter 50 is movably disposed in the cone 13 along a central axis of the cone 13 to adjust the length of the inner vortex inside the cyclone separator, and the locking structure 60 is used for locking the inner vortex limiter 50 in the cone 13.

In general, if the inner vortex is not provided, in the present embodiment, the starting point of the inner vortex is the lower end of the conical cylindrical portion 13, and when the inner vortex limiter is provided, it corresponds to moving the starting point of the inner vortex upward. Therefore, by adjusting the height of the internal vortex limiter 50 in the conical cylinder part 13, under the condition that the inlet pipe 20 is horizontally arranged, the length of the internal vortex limiter 50 can be effectively adjusted, so that the cyclone separator can exhaust by using the internal vortex, simultaneously, the degree of mutual interference between the internal vortex and the external vortex in the airflow can be weakened, and the separation effect of particles and fluid caused by pressure drop consumption due to the action of the two vortices is favorably reduced.

It should be noted that the term "inner vortex limiter 50" as used in this disclosure refers to any suitable structure that can limit the starting point of the inner vortex.

The inner vortex limiter 50 can control the interference length of two vortices by adjusting the height, thereby affecting the pressure drop and separation efficiency. However, when the height of the internal vortex limiter 50 in the cone portion 13 is too large, particles are likely to bounce, causing the particles to bounce back into the exhaust pipe 30 through the internal vortex limiter 50, while an excessively small height increases the internal vortex length, thereby increasing the pressure drop, and thus an appropriate height is required. Alternatively, in one embodiment of the present disclosure, a ratio of a height difference between an upper end surface of the internal vortex limiter 50 to a lower end surface of the conical cylindrical portion 13 to an axial height of the conical cylindrical portion 13 is: 1:5-3:5. That is, the height of the inward vortex limiter 50 in the tapered tubular portion 13 accounts for the height of the entire tapered tubular portion 13: 1:5-3:5. Within this height range, the internal vortex limiter 50 effectively limits the length of the internal vortex, reducing the pressure drop consumed by the action of the two vortices, while also avoiding particle bounce.

Alternatively, as shown in fig. 6 and 7, in one embodiment of the present disclosure, the inward vortex limiter 50 includes a circular flat plate 51 and a mounting rod 52, an upper end of the mounting rod 52 is connected to a bottom surface of the circular flat plate 51, and a lower end of the mounting rod 52 is movably connected to the cone portion 13. Thus, when the cyclone separator works, the starting point of the inner vortex is equivalent to starting from the circular flat plate 51, so that the length of the inner vortex can be adjusted by only adjusting the height of the circular flat plate 51 to an appropriate height according to requirements, and the purpose of weakening the mutual interference of the two inner vortices is achieved.

Further, in one embodiment of the present disclosure, the diameter of the circular flat plate 51 may be the same as the diameter of the inner cylindrical portion 11 and both may be arranged coaxially. The advantage of this design is that the diameter of the inner vortex can be limited by the diameter of the circular flat plate 51, and it is avoided that the diameter of the vortex is too large or too small, which may cause a certain interference to the outer vortex, and too small may affect the upward normal outflow of the gas.

In other embodiments of the present disclosure, the inner vortex limiter 50 may be only one rectangular or arc-shaped plate, which is not limited by the present disclosure.

Optionally, as shown in fig. 5 and 7, in an embodiment of the present disclosure, the cyclone separator further includes a support member 70, the support member 70 includes a sleeve 71 and a support rod 72 disposed around the sleeve 71 at intervals, two ends of the support rod 72 are respectively connected to the inner wall of the cone portion 13 and the sleeve 71, and the mounting rod 52 is axially movably sleeved on the sleeve 71. The support member 70 can effectively support the cyclone separator, and the sleeve 71 can conveniently adjust the height of the cyclone separator.

Wherein, optionally, the number of the support rods 72 may be three, and the three support rods 72 are axially and equally spaced from the sleeve 71, i.e. the adjacent two support rods 72 are circumferentially spaced by 120 °. This configuration is advantageous for improving the mounting stability of the support member 70 itself and the reliability of supporting the inner vortex limiter.

The present disclosure is not limited to the specific structure of the locking structure 60. Alternatively, as shown in fig. 7, in an embodiment of the present disclosure, the locking structure 60 includes a locking rod 61 and a screw hole 62 formed on the sleeve 71, the locking rod 61 has an external thread section which is in threaded fit with the screw hole 62, one end of the locking rod 61 is used for the abutting fit of the mounting rod 52, and the other end of the locking rod 61 protrudes out of the outer wall of the conical cylinder part 13. In this way, by operating the locking lever 61, the locking and unlocking of the sleeve 71 of the cyclone separator and the support 70 can be realized, and when the axial height position of the inner vortex limiter 50 needs to be adjusted, the locking lever 61 can be screwed and loosened, so that the cyclone separator and the sleeve 71 are unlocked, and the adjustment of the inner vortex limiter 50 is realized. After the position of the internal vortex limiter 50 is adjusted in place, the locking rod 61 can be screwed down, so that the end part of the ejector rod is abutted against the mounting rod 52, and the axial locking of the internal vortex limiter 50 is realized.

In other disclosed embodiments, the locking structure 60 may be a damping sleeve disposed within the sleeve 71.

In the present disclosure, the height of the inner vortex limiter 50 may be adjusted in any suitable manner, and in the embodiment shown in fig. 5 and 7, the height of the inner vortex limiter 50 may be manually adjusted through the lower end opening of the cone portion 13. Alternatively, in another embodiment, a through hole may be formed in the side wall of the conical cylinder 13, and a height adjusting lever may be provided, one end of the height adjusting lever is connected to the circular flat plate 51 or the mounting rod 52, and the other end of the height adjusting lever protrudes outward to the outer wall of the conical cylinder 13, where the contact portion of the height adjusting lever and the through hole is the fulcrum position of the adjusting lever. In this way, by operating the adjustment lever, the adjustment of the axial height of the inner vortex limiter 50 can be achieved as well.

Alternatively, as shown in fig. 1 and 5, a valve 90 may be disposed between the cone and the ash discharge hopper 80, and the ash discharge amount of the cyclone separator can be adjusted by disposing the valve 90. In addition, when the equipment needs to be repaired, the valve 90 is closed.

The valve 90 may be a manual valve or an electric valve, which is not limited in this disclosure.

As shown in fig. 2, the exhaust pipe 30, the inner cylinder 11, the outer cylinder 12, and the cone 13 may be coaxially disposed, so as to improve the air outlet efficiency of the exhaust pipe 30 and the dust outlet efficiency of the cone 13.

In one embodiment of the present disclosure, optionally, the lower end of the exhaust pipe 30 may extend into the outer cylindrical portion 12 at a position 10-50mm above the inner cylindrical portion 11, and the ratio of the diameter of the exhaust pipe 30 to the diameter of the outer cylindrical portion 12 may be 1:10-1: 2.

In addition, the number and size of the inlet tubes 20 are not limited by this disclosure. Alternatively, the number of the inlet pipes 20 may be 1 to 3, and the ratio of the diameter of the inlet pipes 20 to the straight of the outer cylindrical part 13 may be 1: 10-:2:5.

In one embodiment of the present disclosure, optionally, the ratio of the diameter of the inner barrel 11 to the straight of the outer barrel 12 may be 2: 5-4:5.

In the present disclosure, the diameters of the inlet pipe 20, the exhaust pipe 30, the inner cylindrical portion 11, the outer cylindrical portion 12, and the tapered cylindrical portion 13 are not limited, and specific dimensions may be determined depending on the feed rate, the feed concentration, the feed particle size, the shape, and the like.

As can be seen from the above, in the present disclosure, the inlet pipe 20 is in a manner of feeding air from the lower portion of the inner cylindrical portion 11, which is advantageous for avoiding the rotational contact between the inner and outer vortices and for reducing the pressure drop. Meanwhile, the flow guide grid structure 40 of the inner cylinder part 11 disperses airflow and particles flowing out from the top, effectively weakens an ash pushing ring, and meanwhile, the particles rotating along the direction of the grid increase the jet effect and are beneficial to the aggregation of the particles on the wall surface. In addition, the design of the inclined inner wall of the outer barrel 12 encourages the particles to flow downwardly, avoiding re-ejection, and also increases the speed in the vertical direction, thus increasing the separation efficiency.

In addition, when the inlet pipe 20 is horizontally arranged, the small-diameter inner cylinder part 11 has higher tangential and radial speeds as an acceleration area of particles and fluid, the radial speeds of gas and particles are increased by arranging the flow guide grid structure 40 at the bottom of the inner cylinder part 11, so that a jet effect is generated, the aggregation of the particles on the wall surface is facilitated, and the aggregated particles can move and be discharged towards the ash discharge hopper 80 under the action of gas flow and self weight. Meanwhile, most particles flow out of the flow guide grid structure 40, so that part of the particles are shunted, and the concentration of the particles at the outlet at the bottom is reduced, so that the rebound ascending of the particles is greatly weakened, and the solid-gas separation efficiency is improved. In addition, since the length of the inner vortex can be limited by providing the inner vortex limiter in the conical portion 13, the pressure drop consumed by the interaction of the inner vortex and the outer vortex can be reduced. The cyclone separator has the advantages of high separation efficiency, obvious pressure drop and the like, and can be used in the fields of oil refining, chemical engineering, metallurgy and the like.

According to yet another aspect of the present disclosure, there is provided a separation system comprising a cyclonic separator as described above. The solid-gas separation system may be used to separate gas and solid particles.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.