Grading impeller with anti-accumulation function

Abstract

The utility model provides a grading impeller with an anti-accumulation function. The grading impeller comprises a rotating shaft, the lower end of the rotating shaft is coaxially provided with a disc, the middle section of the rotating shaft is coaxially provided with a circular ring, the circular ring and the rotating shaft are connected through a plurality of ribs, the outer side of the rotating shaft is provided with a plurality of blades in a circumferential array mode, and the blades are located between the disc and the circular ring. Rotating rods are arranged on one sides of the blades, the two ends of each rotating rod are rotationally connected to the disc and the circular ring respectively, the rotating rods are parallel to the rotating shaft, and the other sides of the blades face the outer side of the grading impeller. The front faces of the blades face the rotating direction of the grading impeller during working, screws are arranged on the back faces of the blades in a penetrating mode, and when the grading impeller rotates, the heads of the screws abut against the front faces of the adjacent blades behind so as to control gaps between the adjacent blades. Materials clamped in gaps of the blades can be automatically discharged, and the materials are prevented from being accumulated in the gaps of the blades.

Description

Technical Field

[0001] The utility model belongs to the technical field of airflow classification impellers, and in particular relates to a classification impeller with an anti-accumulation function. Background Art

[0002] The airflow classifying impeller is mainly used to classify powders. The principle is to guide the powder to flow from the outside to the inside of the classifying impeller through the airflow, and use the gaps between the blades of the classifying impeller to classify the materials. Materials with particle sizes smaller than the blade intervals can enter the classifying impeller through the gaps between the blades, and then be discharged from the top of the classifying impeller along with the airflow. Materials with larger particle sizes are blocked outside the classifying impeller, thus achieving the purpose of classification.

[0003] Existing classifying impellers typically feature fixed blades, with the gaps between the blades also maintaining a fixed value. During the classification process, materials with a particle size comparable to the blade spacing can easily become stuck and accumulate between the blades. Over time, this can clog the gaps between the blades, reducing classification efficiency. Furthermore, any remaining material in the gaps can easily mix with the remaining material, impacting the quality of the subsequent material. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides a grading impeller with an anti-accumulation function, which can automatically discharge materials stuck in the blade gaps and prevent the materials from accumulating in the blade gaps.

[0005] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0006] A grading impeller with an anti-accumulation function comprises: a rotating shaft, a disc is coaxially provided at the lower end of the rotating shaft, a ring is coaxially provided in the middle section of the rotating shaft, the ring and the rotating shaft are connected by a plurality of ribs, and a plurality of blades are provided in a circumferential array on the outer side of the rotating shaft, and the blades are located between the disc and the ring.

[0007] A rotating rod is provided on one side of the blade, and both ends of the rotating rod are rotatably connected to the disc and the ring respectively. The rotating rod is parallel to the rotating shaft, and the other side of the blade faces the outside of the grading impeller.

[0008] The front of the blade faces the rotation direction of the grading impeller when it is working, and a screw is passed through the back of the blade. When the grading impeller rotates, the head of the screw abuts against the front of the adjacent blade behind to control the gap between adjacent blades.

[0009] The beneficial effects of the present invention are:

[0010] 1. When the classifying impeller rotates in the opposite direction or stops, the blades will swing toward the front direction around the rotating rod due to inertia. During this swinging process, the gaps between adjacent blades will increase, and the materials stuck in the gaps will automatically fall out. During the blade swinging process, the opposing surfaces of adjacent blades will undergo relative displacement, which can generate force on the materials stuck in the gaps, so that the stuck materials can be discharged quickly and completely.

[0011] 2. This solution can also change the gap between the blades by adjusting the installation depth of the screws, so that the same grading impeller can meet the grading requirements of different particle sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0013] Figure 1 The figure shows the structural diagram of the grading impeller of the present application when it is working.

[0014] Figure 2 A cross-sectional view of the classifying impeller of the present application during operation is shown.

[0015] Figure 3 Shown Figure 2 A partial enlarged view of point A in the middle.

[0016] Figure 4 The figure shows the structural diagram of the grading impeller of the present application when rotating in the reverse direction.

[0017] Figure 5 A cross-sectional view of the classifying impeller of the present application when rotating in different directions is shown.

[0018] Markings in the figure: shaft-11, disc-12, ring-13, rib-14, blade-2, rotating rod-21, screw-3, counterweight ring-4, elastic washer-5. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figures 1 to 5 As shown, a grading impeller with an anti-accumulation function includes: a rotating shaft 11, a disc 12 is coaxially provided at the lower end of the rotating shaft 11, a ring 13 is coaxially provided in the middle section of the rotating shaft 11, and the ring 13 is connected to the rotating shaft 11 through a plurality of ribs 14. A plurality of blades 2 are provided in a circumferential array on the outer side of the rotating shaft 11, and the blades 2 are located between the disc 12 and the ring 13.

[0021] A rotating rod 21 is provided on one side of the blade 2. The two ends of the rotating rod 21 are rotatably connected to the disc 12 and the ring 13 respectively. The rotating rod 21 is parallel to the rotating shaft 11. The other side of the blade 2 faces the outside of the classifying impeller.

[0022] The front of the blade 2 faces the direction of rotation of the grading impeller when it is working. The back of the blade 2 is penetrated by a screw 3. When the grading impeller rotates, the head of the screw 3 abuts against the front of the adjacent blade 2 behind it to control the gap between the adjacent blades 2. When the grading impeller is working, the driving motor drives the grading impeller to rotate through the rotating shaft 11. Figure 2 As shown, the rotation direction of the grading impeller in this embodiment is clockwise. When the grading impeller rotates, the blades 2 will swing toward the back side around the rotating rod 21 under the action of centrifugal force until the head of the screw 3 abuts against the front side of the adjacent blade 2 behind. At this time, the gap between the adjacent blades 2 will also be at a fixed value, thus meeting the material classification requirements. Figure 4 、 Figure 5 As shown, when the grading impeller rotates in the opposite direction, or after the grading is completed, the grading impeller will gradually stop running, at the moment when the grading impeller finally stops. Due to the effect of inertia, the blades 2 will swing around the rotating rod 21 in the positive direction. During the swinging process at this time, the gap between adjacent blades 2 will increase, and the material stuck in the gap between the blades 2 will automatically fall. And during the swinging process of the blades 2, the relative surfaces of the adjacent blades 2 will undergo relative displacement, so that a force can be generated on the material stuck in the gap, so that the stuck material can be discharged quickly and thoroughly. With the above-mentioned structural setting, the gap between the blades 2 can also be changed by adjusting the installation depth of the screw 3, so that the same grading impeller can meet the grading requirements of different particle sizes.

[0023] Preferably, Figure 3 As shown, the screw 3 is provided on the side of the blade 2 away from the rotating rod 21 to increase the swing inertia of the blade 2 when the grading impeller rotates.

[0024] Preferably, the head of the screw 3 is a spherical structure so as to accurately define the gap between the blades 2 .

[0025] More preferably, Figure 3 As shown, the screw 3 is sleeved with a counterweight ring 4 to increase the weight at the outer edge of the blade 2, thereby increasing the swing inertia of the blade 2.

[0026] More preferably, Figure 3 As shown, the screw 3 is also covered with an elastic washer 5, which is located between the head of the screw 3 and the counterweight ring 4. The elastic washer 5 is in a compressed state. This not only presses the counterweight ring 4 to prevent it from shaking, but also the reaction force generated by the elastic washer 5 tightens the screw 3 to prevent it from falling. The elastic washer 5 is a rubber washer or a metal spring washer.

[0027] The above description is only a preferred embodiment of the present invention and does not represent the only embodiment or limit the present invention. It should be understood by those skilled in the art that various changes or equivalent replacements made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A grading impeller with an anti-accumulation function, comprising: A rotating shaft (11) is provided with a disc (12) coaxially at its lower end, a ring (13) is coaxially provided at the middle section of the rotating shaft (11), the ring (13) and the rotating shaft (11) are connected via a plurality of ribs (14), a plurality of blades (2) are provided along a circumferential array on the outer side of the rotating shaft (11), the blades (2) are located between the disc (12) and the ring (13), and the invention is characterized in that: A rotating rod (21) is provided on one side of the blade (2), and two ends of the rotating rod (21) are rotatably connected to the disc (12) and the ring (13), respectively. The rotating rod (21) is parallel to the rotating shaft (11), and the other side of the blade (2) faces the outside of the grading impeller. The front face of the blade (2) faces the rotation direction of the grading impeller when it is in operation, and a screw (3) is provided on the back face of the blade (2). When the grading impeller rotates, the head of the screw (3) abuts against the front face of the adjacent blade (2) at the rear, thereby controlling the gap between the adjacent blades (2).

2. The grading impeller with anti-accumulation function according to claim 1, characterized in that: The screw (3) is arranged on a side of the blade (2) away from the rotating rod (21).

3. The grading impeller with anti-accumulation function according to claim 1, characterized in that: The head of the screw (3) is a spherical structure.

4. The grading impeller with anti-accumulation function according to claim 1, characterized in that: The screw (3) is sleeved with a counterweight ring (4).

5. The grading impeller with anti-accumulation function according to claim 4, characterized in that: The screw (3) is also sleeved with an elastic washer (5), which is located between the head of the screw (3) and the counterweight ring (4), and the elastic washer (5) is in a compressed state.

6. The grading impeller with anti-accumulation function according to claim 5, characterized in that: The elastic washer (5) is a rubber washer or a metal elastic washer.

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