A rotary powder remover

Abstract

The present invention belongs to the technical field of equipment for separating and air-selecting blended materials, and relates to a rotary powder remover, including a powder removal chamber, a material drop separation chamber and a back-blowing chamber connected in sequence, a power system and a discharge air outlet pipe are provided above the powder removal chamber, a material drop bin is provided below the back-blowing chamber, a material leveling cone connected to the power system is provided inside the powder removal chamber, an air flow dispersion cone connected to the material leveling cone is provided inside the material drop separation chamber, and a feed pipe and an air inlet pipe corresponding to the cone surface are provided above the material leveling cone and below the air flow dispersion cone, respectively. The present invention uses the air flow dispersion cone to evenly distribute the rising negative pressure airflow, and promptly takes away the fine powder to achieve primary air selection; through the back-blowing chamber, the back-blowing airflow takes away the adhered fine powder particles to achieve secondary air selection; finally, the qualified material falls along the material drop bin to the discharge port, is discharged from the powder remover, and enters the next process. Therefore, the present invention has the advantages of simple structure, stable and reliable, uniform material spreading, and efficient air selection.

Description

Technical Field

[0001] The invention belongs to the technical field of mixed material separation and air separation equipment, and in particular relates to a rotary powder remover. Background Art

[0002] With the development of society, the demand for various synthetic raw materials is increasing, and the quality requirements of various important chemical raw materials are getting higher and higher. Among various chemical raw materials, materials with excellent physical properties are required, which is especially important for the stability of subsequent processing and production. In other words, the raw material particle product is uniform, without (very little) fine powder inclusions, which is an important feature of high-quality products.

[0003] At present, there are many de-powdering equipment for chemical material particles, but the technologies are uneven and most of them cannot achieve very satisfactory results. Therefore, it is necessary to redesign a de-powdering device to optimize the equipment parameters according to the product characteristics, repeatedly screen and separate the fine powder in the product particles by air separation, so that the product particles are uniform and the device runs smoothly, solve the subsequent processing problems of users, and improve product quality. Summary of the invention

[0004] The purpose of the present invention is to solve the defects and shortcomings in the prior art and to design a rotary powder remover with simple structure, stable and reliable, uniform material spreading and efficient air separation.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a rotary powder de-powdering device, comprising a powder de-powdering chamber, a material dropping separation chamber and a back-blowing chamber connected in sequence, a power system and a material discharge and air outlet pipe are arranged above the powder de-powdering chamber, a material dropping bin is arranged below the back-blowing chamber, a material mixing cone connected to the power system is arranged inside the powder de-powdering chamber, an air flow dispersion cone connected to the material mixing cone is arranged inside the material dropping separation chamber, and a feed pipe and an air inlet pipe corresponding to the cone surface are respectively arranged above the material mixing cone and below the air flow dispersion cone.

[0006] Preferably, the power system includes a variable frequency motor and a power transmission shaft connected to the output shaft of the variable frequency motor through a coupling. The variable frequency motor is fixed to the supporting rotating bearing seat through a motor support. The power transmission shaft passes through the supporting rotating bearing seat and extends into the powder removal chamber to be connected to the material mixing cone.

[0007] Preferably, bearings are provided between the upper and lower ends of the supporting rotating bearing seat and the power transmission shaft, and upper and lower pressure covers are provided at the upper and lower ends of the supporting rotating bearing seat, respectively, and sealing rings are provided between the upper and lower pressure covers and the power transmission shaft.

[0008] Preferably, the material mixing cone is adjustably connected to the power transmission shaft through an adjusting bolt and an adjusting spacer, and material dividing blades are distributed on the conical surface of the material mixing cone.

[0009] Preferably, one end of the feed pipe passes through the side wall of the powder removal chamber, and the other end is arranged above the material mixing cone. The feed pipe includes a straight pipe section, a curved pipe section and a feed bell mouth which are connected in sequence, and the feed bell mouth is arranged concentrically with the material mixing cone.

[0010] Preferably, the air inlet pipe passes through the side wall of the material discharge bin and extends to the back-blowing chamber. The air inlet pipe is connected to an adjusting air duct that can move up and down through a tightening bolt. The adjusting air duct is provided with an air inlet bell mouth that is concentrically arranged with the airflow dispersion cone.

[0011] Preferably, the back-blowing chamber is provided with two Archimedean spiral air inlet pipes with the same direction.

[0012] Preferably, the powder removal chamber, the material separation chamber, the back-blowing chamber, the material leveling cone and the airflow dispersion cone are all concentrically arranged.

[0013] Preferably, the discharge and air outlet pipe is a curved pipe structure concentrically arranged above the powder removal chamber.

[0014] After adopting the above technical solution, the rotary powder remover provided by the present invention has the following beneficial effects:

[0015] The invention rotates smoothly and reliably, the material spreading and dividing of the material by the material leveling cone is uniform, and the airflow dispersion cone can evenly distribute the rising negative pressure airflow, and promptly take away the fine powder to achieve the first air selection; the material falling from the material leveling cone enters the back-blowing chamber, and the back-blowing airflow takes away the adhering fine powder particles to achieve the second air selection; finally, the qualified material falls along the material drop bin to the material outlet, is discharged from the powder remover, and enters the next process. Therefore, the invention has the advantages of simple structure, stable and reliable, uniform material spreading, and efficient air selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural cross-sectional view of a rotary powder remover of the present invention;

[0017] Figure 2 The structure of a rotary powder remover of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 3 The structure of a rotary powder remover of the present invention is schematically shown in FIG. Figure 2 .

[0019] Among them: frequency conversion motor 1, coupling 2, motor support 3, sealing ring 4, upper pressure cover 5, bearing 6, discharge air outlet duct 7, lower pressure cover 8, powder removal chamber 9, blanking separation chamber 10, air flow dispersion cone 11, blanking bin 12, air inlet pipe 13, tightening bolt 14, backblowing chamber 15, adjusting air duct 16, adjusting bolt 17, gasket 18, adjusting spacer 19, material leveling cone 20, power transmission shaft 21, feed pipe 22, support rotating bearing seat 23. DETAILED DESCRIPTION

[0020] The present invention is further described clearly and completely below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0023] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0025] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0026] The present invention provides a rotary powder remover, such as Figure 1-3 As shown, it includes a powder removal chamber 9, a material discharge separation chamber 10 and a back-blowing chamber 15 which are connected in sequence, a power system and a material discharge air outlet pipe 7 are provided above the powder removal chamber 9, a material discharge bin 12 is provided below the back-blowing chamber 15, a material mixing cone 20 connected to the power system is provided inside the powder removal chamber 9, an air flow dispersion cone 11 connected to the material mixing cone 20 is provided inside the material discharge separation chamber 10, and a feed pipe 22 and an air inlet pipe 13 corresponding to their cone surfaces are provided above the material mixing cone 20 and below the air flow dispersion cone 11, respectively.

[0027] Among them, the power system includes a variable frequency motor 1, which can adjust the speed, and a power transmission shaft 21 connected to the output shaft of the variable frequency motor 1 through a coupling 2. The variable frequency motor 1 is fixed on the supporting rotating bearing seat 23 through a motor support 3. The power transmission shaft 21 penetrates the supporting rotating bearing seat 23 and extends into the powder removal chamber 9 and is connected to the material distribution cone 20 for transmission. Bearings 6 are provided between the upper and lower ends of the supporting rotating bearing seat 23 and the power transmission shaft 21, and the upper and lower ends of the supporting rotating bearing seat 23 are also respectively provided with an upper pressure cover 5 and a lower pressure cover 8, and sealing rings 4 are provided between the upper pressure cover 5 and the lower pressure cover 8 and the power transmission shaft 21.

[0028] The material mixing cone 20 is adjustably connected to the power transmission shaft 21 through an adjusting bolt 17 and an adjusting spacer 19, and material distribution blades are distributed on the conical surface of the material mixing cone 20. Specifically, a concave and convex platform is provided between the material mixing cone 20 and the airflow dispersion cone 11 for positioning, and they are connected together by screws. A connecting shaft hole is provided in the middle of the material mixing cone 20, and a keyway is opened in the shaft hole, which is connected to the power transmission shaft 21 through the keyway.

[0029] One end of the feed pipe 22 passes through the side wall of the powder removal chamber 9, and the other end is arranged above the material mixing cone 20. The feed pipe 22 includes a straight pipe section, a curved pipe section and a feed bell mouth connected in sequence. The feed bell mouth is arranged concentrically with the material mixing cone 20. The air inlet pipe 13 passes through the side wall of the material dropping bin 12 and extends to the backblowing chamber 15. The air inlet pipe 13 is connected to an adjusting air duct 16 which can be moved up and down by a tightening bolt 14. The adjusting air duct 16 is provided with an air inlet bell mouth arranged concentrically with the airflow dispersion cone 11.

[0030] Furthermore, the back-blowing chamber 15 is provided with two Archimedean spiral air inlet pipes with the same direction, the powder removal chamber 9, the material separation chamber 10, the back-blowing chamber 15, the material mixing cone 20 and the air flow dispersion cone 11 are all concentrically arranged, and the material discharge air outlet pipe 7 is a curved pipe structure concentrically arranged above the powder removal chamber 9.

[0031] The present invention discloses a rotary powder remover, which is a top-down structure. The topmost part is a power input device, a frequency conversion motor 1. The output shaft end of the frequency conversion motor 1 is connected to a coupling 2. The coupling 2 is connected to a power transmission shaft 21. Their rotation center axes coincide with each other. The power transmission shaft 21 is fixed in a supporting rotation bearing seat 23 and can only perform rotational motion along its center axis. A feed pipe 22 enters from a circumferential position of a powder removal chamber 9. Its tail end has an elbow and a bell mouth connected thereto. The power transmission shaft 21 passes through its elbow position. The lower shaft portion of the power transmission shaft 21 is connected to a material mixing cone 20 through its center hole. The power transmission shaft 21 is connected to a material mixing cone 20 through its center hole. The bottom end of the transmission shaft 21 is provided with a connecting thread hole connected to the adjusting bolt 17. The size of the gap between the sparging cone 20 and the bell mouth of the feed pipe 22 can be changed by changing the height of the adjusting spacer 19. The sparging cone 20 is connected to the airflow dispersion cone 11 by screws and rotates with the power transmission shaft 21. An adjusting air duct 16 that can move up and down along the central axis of the air inlet pipe 13 is provided below the airflow dispersion cone 11. The bell mouth of the adjusting air duct 16 can adjust the distance from the airflow dispersion cone 11 as required. The backblowing chamber 15 has two spiral air inlet pipes. The bottom end of the drop bin 12 below the backblowing chamber 15 is the qualified product discharge port.

[0032] When a rotary de-powdering device of the present invention is used, the mixed material enters from the feed pipe 22, passes through the bell mouth and falls onto the mixing cone 20. The mixing cone 20 rotates at a uniform speed according to the material characteristics, driving the material to descend along the cone surface to the dividing blades, and the dividing blades evenly spread the material to the de-powdering chamber 9. At this time, the airflow in the air inlet pipe 13 goes up along the airflow dispersion cone 11, passes through the mixing cone 20 and falls down. At this time, the fine powder is carried away by the airflow and enters the discharge air outlet pipe 7. This is the first air selection; the material that is not cleanly selected by air falls along the de-powdering chamber 9 to the drop separation chamber 10. Due to the negative pressure air intake in the backblowing chamber 15, air is taken in along two Archimedean spiral air inlet pipes with the same rotation direction, driving the falling material to continue to move toward the de-powdering chamber 9. At this time, the material with a large specific gravity continues to fall, and the light fine powder is carried to the discharge air outlet pipe 7 by the airflow in the backblowing chamber. This is the second air selection.

[0033] In summary, the rotary de-powdering device provided by the present invention can realize the separation and screening of light powder in the material, has the advantages of simple structure, stable and reliable, uniform material spreading, efficient air separation, etc., has great market value, and deserves to be widely promoted and applied.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotary powder remover, characterized in that: The invention comprises a powder removal chamber (9), a material separation chamber (10) and a back-blowing chamber (15) which are connected in sequence. A power system and a material discharge air outlet pipe (7) are arranged above the powder removal chamber (9), an air inlet pipe is arranged on the back-blowing chamber (15), and a material drop bin (12) is arranged below the back-blowing chamber (15). A material mixing cone (20) connected to the power system is arranged inside the powder removal chamber (9), an air flow dispersion cone (11) connected to the material mixing cone (20) is arranged inside the material separation chamber (10), and a material feed pipe (22) and an air inlet pipe (13) corresponding to the cone surface are arranged above the material mixing cone (20) and below the air flow dispersion cone (11), respectively.

2. A rotary powder remover according to claim 1, characterized in that: The power system comprises a variable frequency motor (1), and a power transmission shaft (21) connected to the output shaft of the variable frequency motor (1) via a coupling (2); the variable frequency motor (1) is fixed to a supporting rotating bearing seat (23) via a motor support (3); the power transmission shaft (21) penetrates the supporting rotating bearing seat (23) and extends into the powder removal chamber (9) to be transmission-connected to the material mixing cone (20).

3. A rotary powder remover according to claim 2, characterized in that: Bearings (6) are provided between the upper and lower ends of the supporting rotating bearing seat (23) and the power transmission shaft (21), and an upper pressure cover (5) and a lower pressure cover (8) are provided at the upper and lower ends of the supporting rotating bearing seat (23), respectively, and sealing rings (4) are provided between the upper pressure cover (5) and the lower pressure cover (8) and the power transmission shaft (21).

4. A rotary powder remover according to claim 2, characterized in that: The material mixing cone (20) is adjustably connected to the power transmission shaft (21) via an adjusting bolt (17) and an adjusting spacer (19), and material dividing blades are distributed on the conical surface of the material mixing cone (20).

5. A rotary powder remover according to claim 1, characterized in that: One end of the feed pipe (22) passes through the side wall of the powder removal chamber (9), and the other end is arranged above the material mixing cone (20). The feed pipe (22) comprises a straight pipe section, a curved pipe section and a feed bell mouth which are connected in sequence. The feed bell mouth is arranged concentrically with the material mixing cone (20).

6. A rotary powder remover according to claim 1, characterized in that: The air inlet pipe (13) passes through the side wall of the material drop bin (12) and extends to the back-blowing chamber (15). The air inlet pipe (13) is connected to an adjusting air duct (16) that can move up and down via a tightening bolt (14). The adjusting air duct (16) is provided with an air inlet bell mouth that is arranged concentrically with the air flow dispersion cone (11).

7. A rotary powder remover according to claim 1, characterized in that: The back-blowing chamber (15) is provided with two Archimedean spiral air inlet pipes with the same direction.

8. A rotary powder remover according to claim 1, characterized in that: The powder removal chamber (9), the material separation chamber (10), the back-blowing chamber (15), the material leveling cone (20) and the airflow dispersion cone (11) are all arranged concentrically.

9. A rotary powder remover according to claim 1, characterized in that: The material discharge and air discharge pipe (7) is a curved pipe structure that is coaxially arranged above the powder removal chamber (9).

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