A centrifuge

Abstract

The utility model discloses a centrifuge, including centrifugal unit and thickening unit, centrifugal unit includes rotary drive mechanism and centrifuge cylinder, and rotary drive mechanism is connected in transmission with centrifuge cylinder to drive centrifuge cylinder rotation, and centrifuge cylinder is open arrangement to the one end far from rotary drive mechanism, thickening unit includes thickening cylinder, feeder and liquid receiver, and thickening cylinder is arranged in centrifuge cylinder, and rotary drive mechanism is connected with thickening cylinder to drive thickening cylinder rotation, and the discharge end of feeder extends to between centrifuge cylinder and thickening cylinder and is located the top of thickening cylinder, and the discharge end of feeder is towards the outside of thickening cylinder, and the liquid receiving end of liquid receiver extends to thickening cylinder to be used for receiving the filtrate filtered through thickening cylinder. Compared with prior art, the centrifuge provided by the utility model has thickening unit, and the material is thickened through thickening unit first, and the concentration is improved and the water content is reduced, and then is treated through centrifugal unit, expands the applicable concentration range of material, and obtains better centrifugal effect.

Description

Technical Field

[0001] This utility model relates to the field of centrifuge technology, and specifically to a centrifuge. Background Technology

[0002] A centrifuge is a machine that uses centrifugal force to separate the components in a mixture of liquids and solid particles or liquids and liquids. Centrifuges are widely used in chemical, petroleum, food, pharmaceutical, mineral processing, coal, water treatment, and shipbuilding industries.

[0003] Centrifuges are common material separation equipment in chemical enterprises. Currently, centrifuges have the following problems: they have high requirements for the concentration of imported materials, and the solid-liquid ratio must be above 30%. When the upstream process is not in good condition, the solid-liquid ratio decreases, the separation effect is poor, and the moisture content exceeds the standard. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a centrifuge that solves the technical problem of poor centrifugation effect when the material concentration is low in the prior art.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This invention provides a centrifuge, comprising a centrifugation unit and a thickening unit.

[0007] The centrifugal unit includes a rotation drive mechanism and a centrifugal cylinder. The rotation drive mechanism is connected to the centrifugal cylinder to drive the centrifugal cylinder to rotate. The centrifugal cylinder is open at one end away from the rotation drive mechanism.

[0008] The thickening unit includes a thickening cylinder, a feeder, and a liquid receiving device. The thickening cylinder is arranged inside the centrifuge cylinder. The rotation drive mechanism is also connected to the thickening cylinder to drive the thickening cylinder to rotate. The discharge end of the feeder extends between the centrifuge cylinder and the thickening cylinder and is located above the thickening cylinder. The discharge end of the feeder faces the outer side of the thickening cylinder. The liquid receiving end of the liquid receiving device extends into the thickening cylinder to receive the filtrate filtered by the thickening cylinder.

[0009] In some embodiments, the centrifuge cylinder and the thickening cylinder are arranged coaxially, and the rotation drive mechanism drives the centrifuge cylinder and the thickening cylinder to rotate about their own axis.

[0010] In some embodiments, the centrifuge drum includes a first rotating drum and a first filter screen, wherein the first filter screen is cylindrical and one end of it is fixedly connected to the first rotating drum, and the first rotating drum is fixedly connected to the rotation drive mechanism.

[0011] In some embodiments, the inner diameter of the first filter screen gradually increases in the direction away from the first drum.

[0012] In some embodiments, the thickening cylinder includes a second drum and a second filter screen, the second filter screen being cylindrical and having one end fixedly connected to the second drum, the second drum being fixedly connected to the rotation drive mechanism.

[0013] In some embodiments, the thickening cylinder further includes a plurality of blades, which are evenly arranged around the second filter screen and fixedly disposed on the outer surface of the second filter screen, wherein the length direction of the blades is parallel to the axis of the second filter screen.

[0014] In some embodiments, the centrifuge further includes a housing, the centrifuge drum and the thickening drum are arranged inside the housing, a drive shaft of a rotation drive mechanism passes through the housing and is connected to the centrifuge drum and the thickening drum, the drive shaft is also rotatably connected to the housing, and a discharge port and a liquid outlet are formed at the bottom of the housing, the discharge port being close to the open end of the centrifuge drum and the liquid outlet being close to the closed end of the centrifuge drum.

[0015] In some embodiments, the bottom surface of the housing is a slope, the discharge port is located at the upper end, the liquid outlet is located at the lower end, and the housing also forms a partition between the discharge port and the liquid outlet.

[0016] In some embodiments, the feeder includes a feed head and a feed pipe, the feed head being located between the centrifuge cylinder and the thickening cylinder and above the thickening cylinder, the feed head having a plurality of discharge holes extending along the axial direction of the thickening cylinder, and the feed pipe communicating with the feed head.

[0017] In some embodiments, the liquid receiving device includes a liquid receiving tank and a liquid drain pipe. The liquid receiving tank is located inside the thickening cylinder and its opening faces the feeder. One end of the liquid drain pipe is connected to the liquid receiving tank, and the other end extends to the outside of the thickening cylinder.

[0018] Compared with the prior art, the centrifuge provided by this utility model has a thickening unit. The material is first thickened by the thickening unit to increase the concentration and reduce the water content, and then centrifuged by the centrifugation unit. Through the pre-thickening of the thickening unit, the applicable concentration range of the material is expanded, and a better centrifugation effect can be obtained even when the material concentration is reduced. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the centrifuge provided in an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A front view of the centrifuge tube. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] To address the technical problem of poor centrifugation effect when the material concentration is low, this invention provides a centrifuge that can expand the applicable range of material concentrations and maintain a good centrifugation effect even when the material concentration decreases.

[0023] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the centrifuge provided in an embodiment of the present invention; Figure 2 yes Figure 1 A front view of the centrifuge drum. The centrifuge includes a centrifugation unit 1 and a thickening unit 2.

[0024] The centrifuge unit 1 includes a rotation drive mechanism 11 and a centrifuge cylinder 12. The rotation drive mechanism 11 is connected to the centrifuge cylinder 12 to drive the centrifuge cylinder 12 to rotate. The centrifuge cylinder 12 is arranged with an open end away from the rotation drive mechanism 11, which is used to discharge the centrifuged material.

[0025] Thickening unit 2 includes a thickening cylinder 21, a feeder 22, and a liquid receiver 23. The thickening cylinder 21 is arranged inside the centrifuge cylinder 12, and a rotation drive mechanism 11 is also connected to the thickening cylinder 21 to drive its rotation. The discharge end of the feeder 22 extends between the centrifuge cylinder 12 and the thickening cylinder 21 and is located above the thickening cylinder 21, with the discharge end facing the outer side of the thickening cylinder 21. The receiving end of the liquid receiver 23 extends into the thickening cylinder 21 to collect the filtrate filtered through the thickening cylinder 21.

[0026] The solid-liquid mixture is sprayed from the feeder 22 onto the thickening cylinder 21. The thickening cylinder 21 performs preliminary filtration; a portion of the liquid passes through the thickening cylinder 21 and is collected and discharged by the liquid receiver 23, while the solids in the material are trapped by the thickening cylinder 21 and remain on its outer wall, increasing the material concentration. As the thickening cylinder 21 rotates, the material on the outer wall is thrown off and falls onto the inner wall of the centrifuge cylinder 12, which then rotates to centrifuge the material. This centrifuge, through pre-thickening in the thickening cylinder 21, increases the material concentration, reduces the water content, expands the applicable concentration range of the material, and achieves good centrifugation results even when the material concentration is low.

[0027] In some embodiments, the rotation drive mechanism 11 includes a motor of a suitable type and may also include a gear set or other speed-changing mechanism to drive the centrifuge cylinder 12 and the thickening cylinder 21 to rotate at a suitable speed.

[0028] In some embodiments, the centrifuge cylinder 12 and the thickening cylinder 21 are arranged coaxially, and the rotation drive mechanism 11 drives the centrifuge cylinder 12 and the thickening cylinder 21 to rotate about their own axes. Preferably, the axes of the centrifuge cylinder 12 and the thickening cylinder 21 are horizontal.

[0029] In some embodiments, the centrifuge cylinder 12 includes a first rotating drum 121 and a first filter screen 122. The first filter screen 122 is cylindrical and one end is fixedly connected to the first rotating drum 121, so that the centrifuge cylinder 12 has a cylindrical structure with one end open and the other end closed. The surface of the first filter screen 122 can be coated with a hydrophobic coating, such as polytetrafluoroethylene or a nano-anti-adhesion layer, to reduce particle adsorption. The sieve holes of the first filter screen 122 are preferably trapezoidal holes, with a smaller inner diameter and a larger outer diameter. The rotation drive mechanism 11 is fixedly connected to the first rotating drum 121.

[0030] Based on the above embodiments, the inner diameter of the first filter screen 122 gradually increases in the direction away from the first drum 121, forming a funnel-shaped structure, which is conducive to the discharge of materials after centrifugation.

[0031] In some embodiments, the thickening cylinder 21 includes a second rotating drum 211 and a second filter screen 212. The second filter screen 212 is cylindrical and one end is fixedly connected to the second rotating drum 211, so that the thickening cylinder 21 has a cylindrical structure with one end open and the other end closed. The surface of the second filter screen 212 can be sprayed with a hydrophobic coating, such as polytetrafluoroethylene or a nano anti-adhesion layer, to reduce particle adsorption. The rotation drive mechanism 11 is fixedly connected to the second rotating drum 211, and the drive shaft of the rotation drive mechanism 11 is simultaneously fixedly connected to the first rotating drum 121 and the second rotating drum 211, driving the centrifuge cylinder 12 and the thickening cylinder 21 to rotate synchronously.

[0032] Please see Figure 2 In some embodiments, the thickening cylinder 21 further includes a plurality of blades 213, which are evenly arranged around the second filter screen 212 and fixedly disposed on the outer surface of the second filter screen 212. The length direction of the blades 213 is parallel to the axis of the second filter screen 212. The blades 213 can play a certain role in blocking the material, prolonging the residence time of the material on the thickening cylinder 21, and improving the thickening effect.

[0033] In some embodiments, the feeder 22 includes a feed head 221 and a feed pipe 222. The feed head 221 is located between the centrifuge cylinder 12 and the thickening cylinder 21 and is positioned above the thickening cylinder 21. The feed head 221 has a plurality of discharge holes extending along the axial direction of the thickening cylinder 21, and the feed head 221 sprays material downwards. One end of the feed pipe 222 is connected to the feed head 221, and the other end is connected to a feeding device.

[0034] In some embodiments, the liquid receiving device 23 includes a liquid receiving tank 231 and a liquid drain pipe 232. The liquid receiving tank 231 is located inside the thickening cylinder 21 and its opening is arranged facing the feeder 22 to receive the filtrate passing through the second filter screen 212. One end of the liquid drain pipe 232 is connected to the liquid receiving tank 231, and the other end extends to the outside of the thickening cylinder 21 to discharge the filtrate.

[0035] In some embodiments, the centrifuge further includes a housing 3, which may be composed of multiple detachably connected parts to facilitate the operator to open the housing 3 for cleaning and maintenance of the various components inside. The centrifuge drum 12 and the thickening drum 21 are arranged inside the housing 3. The drive shaft of the rotation drive mechanism 11 passes through the housing 3 and is connected to the centrifuge drum 12 and the thickening drum 21. The drive shaft is also rotatably connected to the housing 3. A discharge port 31 and a liquid outlet 32 ​​are formed at the bottom of the housing 3. The discharge port 31 is near the open end of the centrifuge drum 12, and the liquid outlet 32 ​​is near the closed end of the centrifuge drum 12. Both the feed pipe 222 and the drain pipe 232 penetrate the housing 3.

[0036] In some embodiments, the bottom surface of the outer casing 3 is an inclined surface, with the discharge port 31 located at the upper end and the liquid outlet 32 ​​located at the lower end. The outer casing 3 also forms a partition 33 between the discharge port 31 and the liquid outlet 32. The partition 33 can prevent the solid material after centrifugation from rolling down the inclined surface into the liquid outlet 32.

[0037] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A centrifuge, characterized in that, include: A centrifugal unit, comprising a rotation drive mechanism and a centrifugal cylinder, wherein the rotation drive mechanism is connected to the centrifugal cylinder to drive the centrifugal cylinder to rotate, and the centrifugal cylinder is open at one end away from the rotation drive mechanism; A thickening unit includes a thickening cylinder, a feeder, and a liquid receiving device. The thickening cylinder is arranged inside the centrifuge cylinder. The rotation drive mechanism is also connected to the thickening cylinder to drive the thickening cylinder to rotate. The discharge end of the feeder extends between the centrifuge cylinder and the thickening cylinder and is located above the thickening cylinder. The discharge end of the feeder faces the outer side of the thickening cylinder. The liquid receiving end of the liquid receiving device extends into the thickening cylinder to receive the filtrate filtered by the thickening cylinder.

2. The centrifuge according to claim 1, characterized in that, The centrifuge cylinder and the thickening cylinder are arranged coaxially, and the rotation drive mechanism drives the centrifuge cylinder and the thickening cylinder to rotate around their own axis.

3. The centrifuge according to claim 1, characterized in that, The centrifuge cylinder includes a first rotating drum and a first filter screen. The first filter screen is cylindrical and one end of it is fixedly connected to the first rotating drum. The first rotating drum is fixedly connected to the rotation drive mechanism.

4. The centrifuge according to claim 3, characterized in that, The inner diameter of the first filter screen gradually increases in the direction away from the first rotating drum.

5. The centrifuge according to claim 1, characterized in that, The thickening cylinder includes a second rotating drum and a second filter screen. The second filter screen is cylindrical and one end of it is fixedly connected to the second rotating drum. The second rotating drum is fixedly connected to the rotation drive mechanism.

6. The centrifuge according to claim 5, characterized in that, The thickening cylinder also includes multiple blades, which are evenly arranged around the second filter screen and fixedly disposed on the outer surface of the second filter screen. The length direction of the blades is parallel to the axis of the second filter screen.

7. The centrifuge according to claim 1, characterized in that, The centrifuge also includes a housing, in which the centrifuge cylinder and the thickening cylinder are arranged. The drive shaft of the rotation drive mechanism passes through the housing and is connected to the centrifuge cylinder and the thickening cylinder. The drive shaft is also rotatably connected to the housing. The bottom of the housing also has a discharge port and a liquid outlet. The discharge port is close to the open end of the centrifuge cylinder, and the liquid outlet is close to the closed end of the centrifuge cylinder.

8. The centrifuge according to claim 7, characterized in that, The bottom surface of the outer shell is inclined, the discharge port is located at the upper end, the liquid outlet is located at the lower end, and the outer shell also forms a partition between the discharge port and the liquid outlet.

9. The centrifuge according to claim 1, characterized in that, The feeder includes a feed head and a feed pipe. The feed head is located between the centrifuge cylinder and the thickening cylinder and is located above the thickening cylinder. The feed head has a plurality of discharge holes extending along the axial direction of the thickening cylinder. The feed pipe is connected to the feed head.

10. The centrifuge according to claim 1, characterized in that, The liquid receiving device includes a liquid receiving tank and a liquid drain pipe. The liquid receiving tank is located inside the thickening cylinder and its opening faces the feeder. One end of the liquid drain pipe is connected to the liquid receiving tank, and the other end extends to the outside of the thickening cylinder.

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