Centrifuge rotor structure

Abstract

The present invention relates to the technical field of centrifuges, and in particular to a centrifuge rotor structure. It comprises a drum and spiral blades arranged on the drum, the spiral blades close to the straight end of the rotor are connected to the drum through supporting blades, and the fixing direction of the supporting blades is opposite to the fixing direction of the spiral blades. In the centrifuge rotor structure of the present invention, when the drum is rotating at high speed, the rotation direction of the drum is consistent with that of the spiral blades, which is opposite to the rotation direction of the supporting blades. At this time, a pump pressure will be formed during high-speed rotation, and a part of the light liquid (water) will be discharged in the opposite direction, thereby increasing the working processing capacity and the material dryness accordingly. Under the same model and the same material properties, the centrifuge rotor structure of the present invention can increase the material processing capacity of the equipment by at least 2-3m per hour. 3 / h, the dryness of the material is increased by at least 3%.

Description

Technical Field

[0001] The invention relates to the technical field of centrifuges, and in particular to a centrifuge rotor structure. Background Art

[0002] The horizontal spiral sedimentation centrifuge is a machine that feeds mud and water mixture into the drum through the feed pipe and the spiral discharge port. Under the centrifugal force generated by the high-speed rotation of the main machine, the solid particles with a larger specific gravity are deposited on the inner wall of the drum. The spiral blades that move relative to the drum continuously scrape the solid particles deposited on the inner wall of the drum and push them out of the slag discharge port. The separated clear liquid flows out of the drum through the weir plate opening. The horizontal spiral sedimentation centrifuge has the advantages of high degree of automation and low labor cost. It is widely used in food processing, petrochemical, environmental protection and other fields. However, during the use of the existing horizontal spiral sedimentation centrifuge, there are disadvantages such as low dehydration dryness of the material and general production capacity.

[0003] The existing method of increasing the dryness of dehydrated materials can be to increase the separation factor by increasing the drum speed. However, increasing the speed will inevitably increase power consumption and increase noise. In addition, it will shorten the life of wearing parts such as bearings and belts, and put forward higher requirements for the drum material. At the same time, the high speed will reduce the efficiency of flocculants and increase the dosage. Therefore, it is urgent to develop a new centrifuge structure that can improve the dryness of dehydrated materials through structural design based on the existing centrifuge structure, and also improve the production capacity. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the present invention provides a centrifuge rotor structure which can improve the dehydration dryness of materials and the production capacity in the centrifuge.

[0005] The technical solution of the present invention is:

[0006] A centrifuge rotor structure comprises a drum and spiral blades arranged on the drum, wherein the spiral blades close to the straight end of the rotor are connected to the drum through supporting blades, and the fixing direction of the supporting blades is opposite to that of the spiral blades.

[0007] Furthermore, the spiral blades are arranged as spiral blades with a first and / or second pitch starting from a straight end of the rotor.

[0008] Furthermore, the support blade and the cross section of the straight end of the rotor form an angle of 9.5°.

[0009] Furthermore, the supporting blades are arranged to be a plurality of evenly distributed on the spiral circumference matching the spiral blades.

[0010] Furthermore, six supporting blades are evenly distributed on the spiral circumference.

[0011] Furthermore, the supporting blades are fixed to the rotating drum and the spiral blades by welding.

[0012] Furthermore, the supporting blade includes a first arcuate welding surface, a second arcuate welding surface and a supporting blade body of an arc-shaped structure connecting the first arcuate welding surface and the second arcuate welding surface, the first arcuate welding surface is integrally fitted and fixedly connected to the rotating drum, and the second arcuate welding surface is partially fitted and fixedly connected to the spiral blade.

[0013] Furthermore, the center position of the second arc-shaped welding surface is fixedly connected to the spiral blade.

[0014] Furthermore, the width of the supporting blade body is equal to the width of the spiral blade.

[0015] Furthermore, the spiral blades not close to the straight end of the rotor are connected to the drum through support columns.

[0016] The beneficial effects achieved by the present invention are:

[0017] The centrifuge rotor structure of the present invention is such that when the drum is rotating at high speed, the rotation direction of the drum is consistent with that of the spiral blades, and opposite to that of the supporting blades. At this time, a pump pressure will be formed during high-speed rotation, and a part of the light liquid (water) will be discharged in the opposite direction, thereby increasing the working capacity and the material dryness. Under the same model and the same material properties, the centrifuge rotor structure of the present invention can increase the material processing capacity of the equipment by at least 2-3m per hour. 3 / h, the dryness of the material is increased by at least 3%.

[0018] The supporting blades in the centrifuge rotor structure of the present invention can be obtained from the scraps of spiral blades, thereby reducing the overall production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the supporting blade structure in the present invention.

[0021] Among them, 1. straight end of the rotor; 2. spiral blades; 3. supporting blades; 31. first arc-shaped welding surface; 32. supporting blade body; 33. second arc-shaped welding surface; 4. supporting column; 5. rotating drum. DETAILED DESCRIPTION

[0022] To facilitate those skilled in the art to understand the present invention, specific implementations of the present invention are described below with reference to the accompanying drawings.

[0023] like Figure 1-2As shown, a centrifuge rotor structure includes a drum 5 and a spiral blade 2 arranged on the drum 5. The spiral blade 2 close to the straight end 1 of the rotor is connected to the drum 5 through a supporting blade 3, and the fixing direction of the supporting blade 3 is opposite to that of the spiral blade 2.

[0024] Specifically, the spiral blade 2 is set as a spiral blade 2 with the first and / or second pitch from the straight end 1 of the rotor. The spiral blade 2 in this embodiment is set within the first pitch from the straight end 1 of the rotor. The support blade 3 forms an angle of 9.5° with the cross section of the straight end 1 of the rotor. The support blade 3 is set to be a plurality of evenly distributed on the spiral circumference matching the spiral blade 2. In this embodiment, the support blade 3 is evenly distributed on the spiral circumference.

[0025] The supporting blade 3 is welded and fixed to the rotating drum 5 and the spiral blade 2. Specifically, the supporting blade 3 includes a first arc-shaped welding surface 31, a second arc-shaped welding surface 33 and a supporting blade body 32 of an arc-shaped structure connecting the first arc-shaped welding surface 31 and the second arc-shaped welding surface 33. The first arc-shaped welding surface 31 is integrally fitted and fixedly connected to the rotating drum 5, and the second arc-shaped welding surface 33 is partially fitted and fixedly connected to the spiral blade 2. The center position of the second arc-shaped welding surface 33 is fixedly connected to the spiral blade 2. The width of the supporting blade body 32 is equal to the width of the spiral blade 2. Specifically, the width of the supporting blade 3 is 200 mm. The spiral blade 2 that is not close to the straight end 1 of the rotor is welded and fixed to the rotating drum 5 through the support column 4.

[0026] In actual use, when the drum 5 rotates at high speed, the drum 5 rotates in the same direction as the spiral blade 2, pushing the material forward. At this time, the support blade 3 rotates in the opposite direction to the spiral blade 2. At this time, a pump pressure is formed during high-speed rotation, and a part of the light liquid (water) is discharged in the opposite direction, thereby increasing the work processing capacity and the material dryness is also improved accordingly (as shown in Table 1).

[0027] Table 1 Equipment treatment effects caused by the new and old rotor structures of the same model

[0028]

[0029] As shown in Table 1, under the same machine model and material properties, the rotor structure of the present invention can increase the material processing capacity of the equipment by 2-3m per hour. 3 / h, the dryness of the material increases by 3%.

[0030] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A centrifuge rotor structure, comprising a drum and a spiral blade disposed on the drum, characterized in that: The spiral blade close to the straight end of the rotor is connected to the drum through a supporting blade, and the fixing direction of the supporting blade is opposite to the fixing direction of the spiral blade; The supporting blades are arranged to be a plurality of evenly distributed on the spiral circumference matching the spiral blades; The supporting blades are welded and fixed to the rotating drum and the spiral blades; The supporting blade comprises a first arcuate welding surface, a second arcuate welding surface and a supporting blade body of an arcuate structure connecting the first arcuate welding surface and the second arcuate welding surface. The first arcuate welding surface is integrally fitted and fixedly connected to the rotating drum, and the second arcuate welding surface is partially fitted and fixedly connected to the spiral blade.

2. A centrifuge rotor structure according to claim 1, characterized in that: The spiral blades are arranged as spiral blades with a first and / or second pitch starting from the straight end of the rotor.

3. A centrifuge rotor structure according to claim 1, characterized in that: The support blade and the cross section of the straight end of the rotor form an angle of 9.5°.

4. A centrifuge rotor structure according to claim 1, characterized in that: The number of the supporting blades is 6 and is evenly distributed on the spiral circumference.

5. A centrifuge rotor structure according to claim 1, characterized in that: The center position of the second arc-shaped welding surface is fixedly connected to the spiral blade.

6. A centrifuge rotor structure according to claim 1, characterized in that: The width of the supporting blade body is equal to the width of the spiral blade.

7. A centrifuge rotor structure according to claim 1, characterized in that: The spiral blades not close to the straight end of the rotor are connected to the drum through support columns.

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