Vacuum screw conveyor for degassing high-gas-content superfine powder

Abstract

According to the vacuum screw conveyor for degassing the high-air-content superfine powder, the air exhaust pipeline used for exhausting air in the powder is arranged on the conveying pipeline of the screw conveyor, so that the air in the powder is exhausted when the powder is conveyed by the screw conveyor, the powder is convenient to package and transport, meanwhile, the air exhaust pipeline used for exhausting the air in the powder is arranged on the conveying pipeline of the screw conveyor, and the air exhaust pipeline used for exhausting the air in the powder is arranged on the conveying pipeline of the screw conveyor. And a filter screen is arranged on the conveying pipeline of the spiral conveyor, so that the powder can be filtered when the air in the powder is extracted by the air extraction pipeline.

Description

Technical Field

[0001] The present application belongs to the technical field of screw conveyors, and more specifically, relates to a vacuum screw conveyor for degassing ultrafine powders with high gas content. Background Art

[0002] When producing ultrafine powder, especially talcum powder, it is necessary to use a conveying device to convey the powder, such as a screw conveyor. At present, when using a screw conveyor to convey the powder, the conveying pipeline of the screw conveyor is a closed pipeline, which makes the screw conveyor not capable of degassing the powder. Due to the high gas content in the powder, it is not conducive to the packaging and transportation of the powder. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a vacuum screw conveyor for degassing ultrafine powders with high gas content, so as to solve the technical problem that the screw conveyor in the prior art cannot remove the gas in the powder.

[0004] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a vacuum screw conveyor for degassing ultrafine powder with high gas content, including a screw conveyor body, the screw conveyor body including a conveying pipeline, and a conveying blade rotatably connected to the inside of the conveying pipeline, the conveying pipeline is provided with a plurality of first through holes, the first through holes penetrate the conveying pipeline in the radial direction of the conveying pipeline, and also includes:

[0005] A filter screen is sleeved on the outside of the conveying pipeline;

[0006] An outer tube body is sleeved on the outside of the delivery pipe and is spaced apart from the delivery pipe, and a cavity is formed between the delivery pipes, and the cavity is connected with the inside of the delivery pipe through the first through hole;

[0007] The air extraction pipeline is connected to the outer tube body and communicated with the cavity.

[0008] Optionally, a compression cylinder is provided on the outer side of the filter screen, a second through hole is provided on the compression cylinder, the second through hole penetrates the compression cylinder in a radial direction of the compression cylinder, and the first through hole is connected to the cavity through the second through hole.

[0009] Optionally, a first limiting ring and a second limiting ring are provided on the delivery pipeline;

[0010] The outer tube body has a first end and a second end opposite to each other, and the first limiting ring is arranged between the first end and the delivery pipeline;

[0011] The second limiting ring abuts against the second end.

[0012] Optionally, it also includes:

[0013] A compression end cover is sleeved on the conveying pipeline;

[0014] A clamping bolt is threadedly connected to the clamping end cover and abuts against the first end.

[0015] Optionally, it also includes:

[0016] A pressure ring is arranged between the clamping bolt and the first end.

[0017] Optionally, the air extraction pipeline is provided with a plurality of air extraction ports, the air extraction pipeline is connected with the cavity through the air extraction ports, and the plurality of air extraction ports are evenly spaced along the axial direction of the air extraction pipeline.

[0018] The beneficial effect of a vacuum screw conveyor for degassing ultrafine powders with high air content provided in the present application is that, compared with the prior art, the vacuum screw conveyor for degassing ultrafine powders with high air content provided in the present application, by arranging an exhaust pipe for extracting the air in the powder on the conveying pipe of the screw conveyor, thereby realizing that when the screw conveyor is conveying the powder, the air in the powder is extracted to facilitate the packaging and transportation of the powder. At the same time, a filter is arranged on the conveying pipe of the screw conveyor to filter the powder when the exhaust pipe extracts the air in the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A schematic diagram of the structure of a vacuum screw conveyor for degassing ultrafine powders with high gas content provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of the filter provided in the embodiment of the present application;

[0022] Figure 3 A schematic diagram of the structure of the compression end cover provided in an embodiment of the present application.

[0023] Among them, the reference numerals in the figure are:

[0024] 1. Screw conveyor body; 2. Conveying pipeline; 3. Conveying blades; 4. First through hole; 5. Filter; 6. Outer tube; 601. First end; 602. Second end; 7. Cavity; 8. Pressing cylinder; 9. Second through hole; 10. First limiting ring; 12. Second limiting ring; 13. Pressing end cover; 14. Pressing bolt; 15. Pressing ring; 16. Exhaust pipeline; 17. Exhaust port. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] See also Figures 1 to 3 Now, a vacuum screw conveyor for degassing ultrafine powder with high gas content provided in an embodiment of the present application is described.

[0030] A vacuum screw conveyor for degassing ultrafine powder with high gas content comprises a screw conveyor body 1, wherein the screw conveyor body 1 comprises a conveying pipe 2 and conveying blades 3 rotatably connected to the inside of the conveying pipe 2, wherein the conveying pipe 2 is provided with a plurality of first through holes 4, and the first through holes 4 penetrate the conveying pipe 2 in the radial direction of the conveying pipe 2.

[0031] The vacuum screw conveyor for degassing ultrafine powder with high gas content also includes a filter screen 5 , an outer tube body 6 and an air extraction pipeline 16 .

[0032] The filter screen 5 is sleeved on the outside of the delivery pipe 2. The outer tube body 6 is sleeved on the outside of the delivery pipe 2 and is spaced from the delivery pipe 2. A cavity 7 is formed between the outer tube body 6 and the delivery pipe 2. The cavity 7 is connected to the inside of the delivery pipe 2 through the first through hole 4. The air extraction pipe 16 is connected to the outer tube body 6 and is connected to the cavity 7.

[0033] When the screw conveyor body 1 is conveying powder, the exhaust pipe 16 is externally connected to a vacuum pump. When the vacuum pump is working, negative pressure is generated in the cavity 7. The air in the powder enters the cavity 7 through the first through hole 4 and is then discharged through the exhaust pipe 16. At the same time, the powder is filtered by the filter 5.

[0034] Compared with the prior art, the present application provides a vacuum screw conveyor for degassing ultrafine powders with high air content. An exhaust pipe 16 for extracting the air in the powder is arranged on the screw conveyor conveying pipe 2, thereby achieving the extraction of air in the powder when the screw conveyor is conveying the powder, so as to facilitate the packaging and transportation of the powder. At the same time, a filter net 5 is arranged on the screw conveyor conveying pipe 2 to filter the powder when the exhaust pipe 16 extracts the air in the powder.

[0035] In the present application, a compression cylinder 8 is provided on the outside of the filter screen 5, and the compression cylinder 8 is fixedly connected to the delivery pipe 2 by bolts, so as to fix the filter screen 5 on the outside of the delivery pipe 2. A second through hole 9 is provided on the compression cylinder 8, and the second through hole 9 penetrates the compression cylinder 8 in the radial direction of the compression cylinder 8, and the first through hole 4 is connected with the cavity 7 through the second through hole 9.

[0036] In the present application, the conveying pipeline 2 includes a first limiting ring 10 , a second limiting ring 12 , a clamping end cover 13 and a clamping bolt 14 .

[0037] The outer tube body 6 has a first end 601 and a second end 602 opposite to each other, and the first limiting ring 10 is arranged between the first end 601 and the delivery pipeline 2. The second limiting ring 12 is in contact with the second end. The clamping end cover 13 is sleeved on the delivery pipeline 2. The clamping bolt 14 is threadedly connected to the clamping end cover 13 and is in contact with the first end 601, wherein the outer tube body 6, the first limiting ring 10, the second limiting ring 12 and the delivery pipeline 2 together form a cavity 7.

[0038] In the present application, a pressure ring 15 is provided between the clamping bolt 14 and the first end 601 , and the clamping bolt fixes the outer tube body 6 via the pressure ring 15 .

[0039] In the present application, a plurality of air suction ports 17 are provided on the air suction pipe 16 , and the air suction pipe 16 is connected to the cavity 7 through the air suction ports 17 . The plurality of air suction ports 17 are evenly spaced along the axial direction of the air suction pipe 16 .

[0040] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A vacuum screw conveyor for degassing ultrafine powder with high gas content, comprising a screw conveyor body, the screw conveyor body comprising a conveying pipeline and a conveying blade rotatably connected to the inside of the conveying pipeline; characterized in that: The delivery pipeline is provided with a plurality of first through holes, and the first through holes penetrate the delivery pipeline in the radial direction of the delivery pipeline, and further comprises: A filter screen is sleeved on the outside of the conveying pipeline; An outer tube body is sleeved on the outside of the delivery pipe and is spaced apart from the delivery pipe, and a cavity is formed between the delivery pipes, and the cavity is connected with the inside of the delivery pipe through the first through hole; The air extraction pipeline is connected to the outer tube body and communicated with the cavity.

2. A vacuum screw conveyor for degassing ultrafine powder with high gas content as claimed in claim 1, characterized in that: A compression cylinder is disposed on the outer side of the filter screen, and a second through hole is disposed on the compression cylinder. The second through hole penetrates the compression cylinder in a radial direction of the compression cylinder, and the first through hole is communicated with the cavity through the second through hole.

3. A vacuum screw conveyor for degassing ultrafine powder with high gas content as claimed in claim 2, characterized in that: A first limiting ring and a second limiting ring on the conveying pipeline; The outer tube body has a first end and a second end opposite to each other, and the first limiting ring is arranged between the first end and the delivery pipeline; The second limiting ring abuts against the second end.

4. A vacuum screw conveyor for degassing ultrafine powder with high gas content as claimed in claim 3, characterized in that: Also includes: A compression end cover is sleeved on the conveying pipeline; A clamping bolt is threadedly connected to the clamping end cover and abuts against the first end.

5. A vacuum screw conveyor for degassing ultrafine powder with high gas content as claimed in claim 4, characterized in that: Also includes: A pressure ring is arranged between the clamping bolt and the first end.

6. A vacuum screw conveyor for degassing ultrafine powder with high gas content as claimed in claim 1, characterized in that: The air extraction pipeline is provided with a plurality of air extraction ports, the air extraction pipeline is connected with the cavity through the air extraction ports, and the plurality of air extraction ports are evenly spaced along the axial direction of the air extraction pipeline.

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