CN210700672U

CN210700672U - Cyclone powder separator

Info

Publication number: CN210700672U
Application number: CN201921464163.XU
Authority: CN
Inventors: 黄晓群; 袁景阳; 张添榜; 林佳辉; 罗大宁
Original assignee: Xiamen University of Technology
Current assignee: Xiamen University of Technology
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-06-09
Anticipated expiration: 2029-09-04

Abstract

The utility model provides a whirlwind formula selection powder machine relates to industrial production mechanical equipment technical field. The cyclone separator is used for separating mixed powder into coarse powder and fine powder. The cyclone separator includes: the separation mechanism comprises a body internally provided with a separation cavity and a feeding pipe which is spirally configured and communicated with the upper part of the separation cavity; a feeding mechanism for blowing the mixed powder into the separation chamber through the feed pipe; and the discharging mechanism comprises a first discharging channel which is arranged on the side wall of the separation cavity and communicated with the separation cavity. The feeding mechanism can blow the mixed powder into the separation cavity through the feeding pipe, and the mixed powder can move spirally along the feeding pipe so as to be primarily separated into coarse powder and fine powder; and the fine powder can enter the separation cavity to perform spiral movement, so that the fine powder is sprayed out from the first discharge channel, and the coarse powder is collected at the bottom of the separation cavity. The utility model discloses a whirlwind formula selection powder machine can effectually separate into coarse powder and fine powder with mixed powder.

Description

Cyclone powder separator

Technical Field

The utility model relates to an industrial production mechanical equipment field particularly, relates to a whirlwind formula selection powder machine.

Background

The cyclone powder concentrator can effectively separate coarse powder and fine powder in mixed powder, and is widely applied to coal mills, raw material discharge drying mills and cement mill systems in novel dry cement production lines. In the industry, cyclone powder separators are mostly used for separating coarse and fine powder, and are generally designed in such a way that a material scattering disk is combined with a rotary drum to be matched with airflow generated by a fan, the coarse and fine separation is realized by utilizing the difference of gravity, pneumatic drag force and inertial centrifugal force borne by the coarse and fine powder when the material scattering disk rotates, wherein the coarse powder is settled, and the fine powder moves along with the airflow to a discharge port to be conveyed outwards.

At present, cyclone powder separators are only suitable for cement particles with higher density and cannot be well applied to the continuous powder conveying process with higher requirements on flow speed and flow, such as quicklime powder conveying pipelines required by a dry desulfurization tower. And the cyclone powder concentrator in the prior art has the disadvantages of excessively complex structure, high energy consumption and troublesome maintenance. In view of the above, the inventors of the present invention have made a study of the prior art and then have made the present application.

SUMMERY OF THE UTILITY MODEL

The utility model provides a whirlwind formula selection powder machine aims at improving whirlwind formula selection powder machine structure complicacy, and is not suitable for the problem that the higher powder of requirement of velocity of flow carries out the separation in continuous transportation process.

In order to solve the technical problem, the utility model provides a whirlwind formula selection powder machine for make the mixed powder separate into coarse powder and fine powder, whirlwind formula selection powder machine contains:

the separation mechanism comprises a body with a separation cavity arranged inside and a feeding pipe which is spirally configured and communicated with the upper part of the separation cavity;

a feeding mechanism for blowing the mixed powder into the separation chamber through the feed pipe;

the discharging mechanism comprises a first discharging channel which is arranged on the side wall of the separation cavity and communicated with the separation cavity;

the feeding mechanism can blow the mixed powder into the separation cavity through the feeding pipe, and the mixed powder can spirally move along the feeding pipe so as to be preliminarily separated into coarse powder and fine powder; and the fine powder can enter the separation cavity to perform spiral movement, so that the fine powder is sprayed out from the first discharge channel, and the coarse powder is collected at the bottom of the separation cavity.

As a further optimization, the separation cavity is a cavity in the shape of a rotating body.

Preferably, the bottom of the separation chamber gradually converges from top to bottom towards the middle, and the discharging mechanism includes a second discharging channel disposed at the bottom of the separation chamber and used for discharging coarse powder, and a sealing member capable of sealing the second discharging channel.

As a further optimization, the feeding pipe is communicated with the separation cavity along a first tangential direction of the separation cavity, and the first discharging channel is communicated with the separation cavity along a second tangential direction of the separation cavity.

As a further optimization, the separation cavity is a cavity with the bottom part in an inverted cone shape and the upper part in a cylindrical shape.

As a further optimization, the spiral diameter of the spiral winding of the feed pipe is 1.5 to 2 times the inner diameter of the separation chamber.

As a further optimization, the ratio of the maximum height of the separation cavity to the inner diameter of the separation cavity is 1.5-2.4.

As a further optimization, the included angle of the cross section of the inverted cone-shaped bottom of the separation cavity is 100-120 degrees.

Preferably, the discharge mechanism includes a filter disposed in the first discharge channel for preventing coarse powder from entering the first discharge channel.

As a further optimization, the discharging mechanism further comprises a cleaning mechanism disposed in the first discharging channel for cleaning the filter screen.

By adopting the technical scheme, the utility model discloses can gain following technological effect: the utility model discloses a whirlwind formula selection powder machine can effectually separate into coarse powder and fine powder with mixed powder. Specifically, the feeding mechanism can blow the mixed powder into the separation cavity through the feeding pipe, and the mixed powder can spirally move along the feeding pipe so as to be primarily separated into coarse powder and fine powder; and the fine powder can enter the separation cavity to perform spiral movement, so that the fine powder is sprayed out from the first discharge channel, and the coarse powder is collected at the bottom of the separation cavity.

The utility model discloses a whirlwind formula selection powder machine not only can effectually separate into coarse powder and fine powder with mixed powder, can be applicable to the powder of the less quick lime of density class moreover to can be applicable to the velocity of flow higher, in the great powder pipeline of flow.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is an isometric view of a cyclone separator at a first viewing angle in accordance with an embodiment of the present invention;

fig. 2 is an exploded view of the cyclone separator at a first viewing angle according to an embodiment of the present invention;

FIG. 3 is a top view of the cyclone powder concentrator according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

the labels in the figure are: 1-a separation mechanism; 2-a discharging mechanism; 3-feeding pipe; 4-body; 5-a separation chamber; 6-a first discharge channel; 7-filtering with a filter screen; 8-a cleaning mechanism; 9-a second discharge channel; 10-a seal; 11-opening; 12-a cover plate; d1-helix diameter; d2-inner diameter; l-maximum height; phi-angle.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

as shown in fig. 1 and 2, in the present embodiment, the cyclone separator includes:

a separation mechanism 1, which comprises a body 4 with a separation cavity 5 arranged therein and a feeding pipe 3 which is spirally configured and communicated with the upper part of the separation cavity 5;

a feeding mechanism for blowing the mixed powder into the separation chamber 5 through the feed pipe 3;

the discharging mechanism 2 comprises a first discharging channel 6 which is arranged on the side wall of the separation cavity 5 and communicated with the separation cavity 5;

the feeding mechanism can blow mixed powder into the separation chamber 5 through the feeding pipe 3, and the mixed powder can spirally move along the feeding pipe 3 so as to be primarily separated into coarse powder and fine powder; and can enter the separation chamber 5 to spirally move so that fine powder is sprayed out of the first discharge channel 6, and coarse powder is collected at the bottom of the separation chamber 5.

Specifically, the feeding mechanism is the prior art in the field, and may adopt positive pressure fan, blower, etc. capable of generating airflow and driving the mixed powder to advance, which is not described herein again. The mixed powder containing the coarse powder and the fine powder is carried into the feed pipe 3 with the gas flow and advances spirally along the feed pipe 3. During the forward process, due to the centrifugal effect, the coarse powder is thrown away to the pipe wall on the side far away from the rotating shaft, and the fine powder floats in the airflow to complete the primary separation. The mixed powder which is primarily separated enters the separation cavity 5 to continue spiral movement, the coarse powder is thrown to the inner wall of the separation cavity 5, and the coarse powder slides downwards to the bottom of the separation cavity 5 along the pipe wall under the action of gravity; the pneumatic drag experienced by the fine powder is sufficient to counteract gravity, so that the fine powder can float in the separation chamber 5 and continue to spiral with the gas flow and finally be ejected from the first outlet channel 6 with the gas flow.

The first discharging channel 6 is arranged on the side wall of the separating cavity 5 and does not extend inwards, so that fine powder can be sprayed out from the first discharging channel 6 better, the phenomenon that the fine powder cannot be sprayed out from the first discharging channel 6 when the fine powder is spirally moved in the separating cavity 5 all the time can be avoided, the separation rate of the cyclone powder concentrator is greatly improved, and the cyclone powder concentrator has good practical significance.

By figure 1, figure 2 in this embodiment, inlet pipe 3 adopts the setting of single circle, encircles in the upper portion of main part, and not only simple manufacture can satisfy the effect of required preliminary separation moreover. In another embodiment, the feeding pipe 3 is spirally descending from top to bottom, so that the feeding pipe 3 maintains a consistent spiral diameter D1, and the velocity of the air flow is always kept consistent. The feeding pipe 3 can also adopt a spiral configuration with a spiral diameter D1 which is larger and smaller, so that the centripetal force required by the coarse powder after entering the feeding pipe is larger and larger, and the centrifugal effect and the fine powder occur to obtain better primary separation effect.

As shown in fig. 2 and 3, in the present embodiment, the separation chamber 5 is a cavity in the shape of a rotating body. In particular, the shape of the separation chamber 5 is configured as a shape of a body of revolution, enabling a better helical movement of the air flow within the separation chamber 5 for enabling fine powder to float in the air flow. The separation chamber 5 can be set to be olive-shaped with wide middle and narrow ends, which is convenient for the flow velocity of the air flow to be reduced in the middle part, so that the coarse powder is easier to descend; also can set up to be the back taper and make the air current from top to bottom spiral activity's in-process, can keep higher velocity of flow all the time, make fine powder float in the air current, along with the air current is from the blowout of first discharging channel 6.

As shown in fig. 2 and 4, in the present embodiment, the bottom of the separation chamber 5 gradually converges from top to bottom toward the middle, and the discharging mechanism 2 includes a second discharging channel 9 disposed at the bottom of the separation chamber 5 for discharging coarse powder, and a sealing member 10 capable of sealing the second discharging channel 9. Specifically, the bottom of the separation chamber 5 is arranged in a funnel shape, which is beneficial to collecting coarse powder; the second outlet channel 9 is arranged at the lowest funnel-shaped part, so that coarse powder can be easily discharged from the separation chamber 5. In order to ensure the separation of the mixed powder, the second discharge channel 9 needs to be sealed during operation of the machine, so that the gas flow completely flows out of the first discharge channel 6. The sealing element 10 can be screwed to the body to seal the second outlet channel 9; the second discharge channel 9 can also be directly blocked by a plug in interference fit; the valve can also be arranged on the main body in a valve mode, the valve is closed when the cyclone powder concentrator operates, the second discharging channel 9 is sealed, and the fine powder can only flow out of the first discharging channel 6 along with the airflow.

In the present embodiment, as shown in fig. 3, the feeding pipe 3 is connected to the separation chamber 5 along a first tangential direction of the separation chamber 5, and the first discharging passage 6 is connected to the separation chamber 5 along a second tangential direction of the separation chamber 5. In particular, the lumen of the feed tube 3 is tangential to the separation chamber 5, enabling the initially separated mixed powder to be injected tangentially into the separation chamber 5, reducing the energy losses during the entry. The first discharge channel 6 is tangent to the separation chamber 5, so that fine powder can smoothly enter the first discharge channel 6 from the separation chamber 5 along with the airflow, and the ejected airflow with the fine powder has high flow speed. As shown in the figure 3, the first tangential direction and the second tangential direction are parallel to each other, the direction of the feeding pipe 3 entering the separation cavity 5 is opposite to the direction of the feeding pipe 5 entering the first discharging channel 6, so that a better separation effect can be obtained, and the device has a good practical significance.

In the present embodiment, as shown in fig. 4, the separation chamber 5 is a chamber having an inverted cone-shaped bottom and a cylindrical upper portion. Specifically, the regular cylindrical cavity is adopted, the funnel-shaped bottom is arranged, and the structure is simple and the manufacturing is convenient.

As shown in fig. 1 and 2, in the present embodiment, the main body is provided with an opening 11 communicating with the separation chamber 5, and the separation mechanism 1 includes a cover plate 12 disposed on the main body 4 so as to seal the opening 11. The opening 11 is used for overhauling, cleaning and maintaining the cyclone powder concentrator. Has good practical significance.

As shown in fig. 1 and 2, in the present embodiment, the spiral diameter D1 of the spiral loop of the feeding pipe 3 is 1.5 times to 2 times, preferably 1.75 times the inner diameter D2 of the separation chamber 5. Specifically, after a plurality of tests, when the ratio D1/D2 of the spiral diameter D1 to the inner diameter D2 is 1.5-2, the primary separation effect of the mixed powder in the feeding pipe 3 is the best.

As shown in FIG. 4, in the present embodiment, the ratio L/D2 of the maximum height L of the separation chamber 5 to the inner diameter D2 of the separation chamber 5 is 1.5 to 2.4, preferably 2.

As shown in fig. 4, in the present embodiment, the angle Φ of the cross section of the inverted cone-shaped bottom of the separation chamber 5 is 100 ° to 120 °, preferably 110 °. Specifically, the following table 1 shows the experimental results of the separation test performed on the mixed powder composed of the coarse powder and the fine powder of the quicklime with different height to diameter ratios L/D2 in combination with different included angles Φ. The finely divided recovery rate is the weight percentage of the finely divided powder separated from the mixed powder and discharged from the first discharge channel 6.

TABLE 1 Effect of aspect ratio L/D2 and Angle φ on fines recovery

As shown in fig. 2, in the present embodiment, the discharging mechanism 2 includes a filter 7 disposed in the first discharging channel 6 for preventing coarse powder from entering the first discharging channel 6. Specifically, through the primary separation of the feeding pipe and the secondary separation of the separating cylinder, the separation rate of more than 80 percent is achieved. In order to further improve the separation rate, a filter screen 7 with meshes is arranged on the first discharge channel 6, so that the separation effect is better.

As shown in fig. 2, in the present embodiment, the discharging mechanism 2 further includes a cleaning mechanism 8 disposed in the first discharging channel 6 for cleaning the filter screen 7. Specifically, the mesh of filter screen 7 can be stopped up by coarse powder in the in-process of long-term use, influence whirlwind formula selection powder machine's separation effect and separation efficiency, consequently, install one in the first discharging channel 6 outside and have the switch and be connected with the mouth of blowing of positive pressure air supply, blow in separation chamber 5 from the discharging channel outside when whirlwind formula selection powder machine does not use, the coarse powder that will stop up the mesh blows in separation chamber 5 bottom to clean filter screen 7, make filter screen 7 keep unobstructed, guarantee the separation effect. In another embodiment, a brush arranged on the surface of the screen 7 and a motor for driving an operator to move on the surface of the screen 7 may be provided, the motor driving the brush to sweep across the surface of the screen 7 to clean the screen 7.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cyclone powder concentrator for separating a mixed powder into a coarse powder and a fine powder, comprising:

the separation mechanism (1) comprises a body (4) with a separation cavity (5) arranged therein and a feeding pipe (3) which is spirally configured and communicated with the upper part of the separation cavity (5);

-a feeding mechanism to blow said mixed powder into said separation chamber (5) through said feeding duct (3);

the discharging mechanism (2) comprises a first discharging channel (6) which is arranged on the side wall of the separation cavity (5) and communicated with the separation cavity (5);

the feeding mechanism can blow the mixed powder into the separation chamber (5) through the feeding pipe (3), and the mixed powder can spirally move along the feeding pipe (3) to preliminarily separate the mixed powder into coarse powder and fine powder; and can enter the separation chamber (5) to perform spiral movement, so that fine powder is sprayed out from the first discharge channel (6), and the coarse powder is collected at the bottom of the separation chamber (5).

2. A cyclone powder concentrator as claimed in claim 1, wherein the separation chamber (5) is a chamber in the shape of a rotor.

3. A cyclone powder concentrator as claimed in claim 2, wherein the bottom of the separation chamber (5) tapers from top to bottom towards the middle, and the discharge mechanism (2) comprises a second discharge channel (9) arranged at the lowest part of the separation chamber (5) for discharging coarse powder, and a sealing element (10) capable of sealing the second discharge channel (9).

4. A cyclone powder concentrator as claimed in claim 2, wherein the feed tube (3) communicates with the separation chamber (5) along a first tangential direction of the separation chamber (5), and the first discharge channel (6) communicates with the separation chamber (5) along a second tangential direction of the separation chamber (5).

5. A cyclone powder concentrator according to any one of claims 1 to 4, wherein the separation chamber (5) is a chamber with a bottom part in the shape of an inverted cone and a cylindrical upper part.

6. A cyclone powder concentrator as claimed in claim 5, wherein the helical diameter D1 of the helical turn of the feed tube (3) is 1.5 to 2 times the internal diameter D2 of the separation chamber (5).

7. A cyclone powder concentrator as claimed in claim 5, wherein the ratio L/D2 of the maximum height L of the separation chamber (5) to the inner diameter D2 of the separation chamber (5) is 1.5-2.4.

8. A cyclone powder concentrator as claimed in claim 7, wherein the angle φ of the cross-section of the inverted cone-shaped bottom of the separation chamber (5) is 100-120 °.

9. A cyclone powder concentrator according to any one of claims 1-3, wherein the discharge means (2) comprises a sieve (7) arranged in the first discharge channel (6) for preventing coarse powder from entering the first discharge channel (6).

10. A cyclone powder concentrator as claimed in claim 9, wherein the discharge means (2) further comprises cleaning means (8) arranged in the first discharge channel (6) for cleaning the sieve (7).