Aerodynamic screening machine
By improving the installation structure and airflow distribution of the grading impeller, the problem of dust and particle accumulation on the impeller and bearings in the pneumatic screening machine was solved, thereby improving screening accuracy and equipment stability and extending service life.
Patent Information
- Application Number
- CN202520051151.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-09
AI Technical Summary
In existing pneumatic screening machines, dust and particles easily accumulate between the grading impeller and the bearing, affecting rotation efficiency and screening accuracy, and increasing equipment maintenance costs.
The installation structure of the classifying impeller has been improved by suspending it inside sleeve one and sleeve two, and evenly distributed branch pipes are set on the outside of the feed cylinder. The air outlet end of the branch pipe is inclined upward and enters the lower part of the feed pipe, which improves the uniformity of airflow and the material dispersion effect.
It improves screening accuracy, extends equipment lifespan, and reduces maintenance costs.
Smart Images
Figure CN223946225U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a screening device technical field, concretely relates to an air power screening machine. BACKGROUND
[0002] The air power screening machine is a kind of equipment using airflow to screen and classify materials, and is widely used in mineral processing, chemical industry, food industry and other industries.The principle is to accelerate the granular material by high-pressure airflow, and realize the classification and screening of materials by using the inertia difference of granular material in airflow and the density difference of granular material.The air power screening technology has the advantages of high screening efficiency, large processing capacity and low energy consumption, and can complete the screening task without contacting the materials, especially suitable for the processing of materials that are easy to break or easy to contaminate.
[0003] However, in the design of the existing air power screening machine, the two ends of the classification impeller are installed through bearings, and since the material particles are impacted by airflow during screening, dust or particles are easily accumulated near the bearings, which not only affects the rotation efficiency of the impeller, but also may cause the bearing to wear or damage, thereby affecting the running stability of the whole machine.More seriously, these accumulated particles may negatively affect the screening accuracy, resulting in unsatisfactory screening effect, increasing the equipment maintenance cost and service life burden, therefore the application proposes an improved air power screening machine. CONTENT OF THE UTILITY MODEL
[0004] In order to overcome the problems in the background art, the utility model provides an air power screening machine, which solves the problem of dust and particle accumulation between the impeller and the bearing in the traditional air power screening machine.
[0005] To achieve the above-mentioned purpose, the utility model is realized by the following technical schemes:
[0006] An air power screening machine, comprising a feeding cylinder, a classification cylinder, a positive pressure air inlet pipe, a classification impeller, a motor, a negative pressure discharge pipe, a feeding pipe is connected to the middle part of the feeding cylinder, the air outlet end of the positive pressure air inlet pipe extends into the feeding cylinder, the classification cylinder is installed above the feeding cylinder and communicates with the feeding cylinder, the side wall of the classification cylinder is centrally symmetrically installed with sleeve one and sleeve two, the motor is installed at the outer end of the sleeve one, the sleeve two communicates with the negative pressure discharge pipe, the classification impeller is coaxially suspended in the sleeve one and the sleeve two, one end of the classification impeller is closed and connected with the power output end of the motor, and the other end is open and extends into the sleeve two.
[0007] Further, a material blocking ring is arranged on the inner wall of the sleeve two, and the open end of the classification impeller extends into the material blocking ring.
[0008] Further, the positive pressure air inlet pipe is provided with branch pipes uniformly distributed outside the feeding cylinder, and the air outlet end of the branch pipe extends below the feeding pipe in the feeding cylinder.
[0009] Further, the gas outlet end of the branch pipe is arranged clockwise or counterclockwise upward in the feeding cylinder.
[0010] The utility model discloses the beneficial effect:
[0011] The application improves the bearing mounting structure of the traditional grading impeller, suspends the grading impeller in sleeve one and sleeve two, solves the problem of dust and particle accumulation between the impeller and the bearing in the traditional air power screening machine, the positive pressure air inlet pipe is provided with branch pipes uniformly distributed on the outside of the feeding cylinder, the gas outlet end of the branch pipe is arranged clockwise or counterclockwise upward below the feeding pipe in the feeding cylinder, which can improve the uniformity of the screening airflow and the particle movement effect, improve the screening precision and prolong the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0012] In order to clearly illustrate the technical scheme in the embodiments of the utility model, the drawings used in the embodiment description are described.
[0013] Figure 1 It is the whole structure schematic diagram of the utility model;
[0014] Figure 2 It is the grading cylinder mounting structure schematic diagram of the utility model;
[0015] Figure 3 It is the positive pressure air inlet pipe structure schematic diagram of the utility model;
[0016] Figure 4 It is the working structure schematic diagram of the utility model.
[0017] 1-feeding cylinder, 11-feeding pipe, 2-grading cylinder, 21-sleeve one, 22-sleeve two, 23-material blocking ring, 3-positive pressure air inlet pipe, 31-branch pipe, 4-grading impeller, 5-motor, 6-negative pressure discharge pipe. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and beneficial effect of the utility model more clearly, the preferred embodiment of the utility model will be described in detail below, combined with the drawings, to facilitate the understanding of the technical personnel.
[0019] The utility model discloses an air power screening machine, refer to Figures 1-4The utility model provides an air power screening machine, including feed cylinder 1, grading cylinder 2, positive pressure air inlet pipe 3, grading impeller 4, motor 5, negative pressure discharge pipe 6, the middle part of the feed cylinder 1 is connected with the feed pipe 11 can add the material that needs screening, the air outlet of positive pressure air inlet pipe 3 stretches into feed cylinder 1, and the material that enters is dispersed motion upwards through positive pressure airflow, grading cylinder 2 is installed above feed cylinder 1 and is communicated feed cylinder 1, and the material is screened in grading cylinder 2, and the lateral wall of grading cylinder 2 is symmetrically installed with sleeve one 21 and sleeve two 22, and motor 5 is installed at the outer end of sleeve one 21, and sleeve two 22 is communicated with negative pressure discharge pipe 6, and the screened material can be extracted by negative pressure, and grading impeller 4 is coaxially suspended in sleeve one 21 and sleeve two 22, and one end of grading impeller 4 is closed and is connected with the power output end of motor 5, and the other end is open and stretches into sleeve two 22, solve the problem of dust and particle accumulation between impeller and bearing in traditional air power screening machine.
[0020] Referring to Figures 1-4 The inner wall of sleeve two 22 is provided with a material blocking ring 23, and the open end of grading impeller 4 extends into the material blocking ring 23, so that the un-screened material is prevented from entering the sleeve two 22 from the gap between the sleeve two 22 and the grading impeller 4, thereby affecting the screening accuracy.
[0021] Referring to Figures 1-4 The positive pressure air inlet pipe 3 is provided with branch pipes 31 uniformly distributed on the outer side of the feed cylinder 1, and the air outlet of the branch pipe 31 extends below the feed pipe 11 in the feed cylinder 1, and the air outlet of the branch pipe 31 is arranged in the feed cylinder 1 to be inclined upward clockwise or counterclockwise, so that the uniformity of the screening power airflow and the dispersion effect on the material can be improved.
[0022] Working process:
[0023] The positive pressure air inlet pipe 3 is connected to the positive pressure pump, the motor 5 is started, and the negative pressure discharge pipe 6 is connected to the negative pressure fan, the material first enters the feed cylinder 1 of the screening machine through the feed pipe 11, in order to ensure the screening effect, the material needs to be pretreated to remove large impurities, the airflow entering the positive pressure air inlet pipe 3 is used as power to blow the material into the grading cylinder 2, the motor 5 drives the grading impeller 4 to rotate, the material meeting the specifications enters the grading impeller 4, and is extracted by the negative pressure discharge pipe 6 to the connected material collecting device for collection, and the larger particles fall due to the action of gravity and inertia, and the screening is completed, and the material is discharged through the discharge port at the bottom of the feed cylinder 1.
[0024] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.
Claims
1. An aerodynamic sizing machine characterized by: It includes feeding cylinder (1), grading cylinder (2), positive pressure air pipe (3), grading impeller (4), motor (5), negative pressure discharge pipe (6), the middle part of feeding cylinder (1) is connected with feeding pipe (11), the air outlet end of positive pressure air pipe (3) extends into feeding cylinder (1), grading cylinder (2) is installed on the upper part of feeding cylinder (1) and is communicated with feeding cylinder (1), the side wall of grading cylinder (2) is symmetrically installed with sleeve one (21) and sleeve two (22), motor (5) is installed at the outer end of sleeve one (21), sleeve two (22) is communicated with negative pressure discharge pipe (6), grading impeller (4) is coaxially suspended in sleeve one (21) and sleeve two (22), one end of grading impeller (4) is closed and connected with the power output end of motor (5), the other end is open and extends into sleeve two (22).
2. The aerodynamic screening machine of claim 1, wherein: The inner wall of sleeve two (22) is provided with a material blocking ring (23), and the open end of grading impeller (4) extends into the material blocking ring (23).
3. The aerodynamic screening machine of claim 1, wherein: The positive pressure air pipe (3) is provided with branch pipes (31) uniformly distributed on the outside of the feeding cylinder (1), and the air outlet ends of the branch pipes (31) extend below the feeding pipe (11) in the feeding cylinder (1).
4. The aerodynamic screening machine of claim 3, wherein: The air outlet ends of the branch pipes (31) are arranged in a clockwise or counterclockwise inclined upward manner in the feeding cylinder (1).