A centrifuge

Abstract

The present application belongs to the field of centrifugal device, and particularly relates to a centrifugal machine, which comprises a casing, an outer centrifugal unit, a first driving unit, an inner centrifugal unit, a second driving unit, a feeding unit and a supporting unit, wherein the outer centrifugal unit comprises an outer rotating drum and a first connecting piece, the first driving unit comprises a first motor, a first driving gear, a first driven gear and a belt, the inner centrifugal unit comprises an inner rotating drum, a first rotating shaft and a second connecting piece, the second driving unit comprises a second motor, a second driving gear, a second driven gear and a belt, the feeding unit comprises a third motor, a second rotating shaft and a feeding pipe, the first driving unit drives the outer centrifugal unit to rotate, and the second driving unit drives the inner centrifugal unit to rotate. The inner and outer rotating drums are arranged to rotate in the same direction, the relative motion speed of water-containing materials is reduced, the loss rate of the materials is reduced, and the screen hole is prevented from being blocked.

Description

Technical Field

[0001] This invention belongs to the field of centrifugation devices, and specifically relates to a centrifuge. Background Technology

[0002] Traditional centrifuges consist of two main components: a rotor and a screen. The rotor rotates at high speed and beats the material, generating centrifugal force. Due to the obstruction of the screen, the water is separated, and the material remains in the chamber. The spiral blades on the rotor then push the dehydrated material into the next process.

[0003] However, traditional centrifuges require significant centrifugal force for dehydration, necessitating high rotor speeds. During this high-speed rotation, the rotor forcefully agitates the material, causing severe breakage. For example, when dehydrating bottle flakes and tray flakes, the loss rate for bottle flakes exceeds 5%. For tray flakes, due to their more brittle material, the loss rate reaches over 10%, making material recovery extremely difficult. Furthermore, the large amount of powder generated from material breakage easily clogs the screens, reducing the dehydration rate. Regular screen cleaning during downtime is time-consuming and labor-intensive, impacting continuous production. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of material loss and screen clogging that are easily caused by current centrifuges during dehydration, as described in the background art. Here, a new centrifuge is proposed, which has a low material loss rate and is not prone to screen clogging.

[0005] To achieve the above objectives, a centrifuge is provided, comprising:

[0006] The housing has two baffles inside.

[0007] An external centrifuge unit is provided with an outer drum and a first connecting member. The outer drum is disposed inside the housing. The circumferential sidewall of the outer drum is provided with a plurality of sieve holes. The first connecting member is connected to one sidewall of the outer drum.

[0008] The first drive unit includes a first motor, a first driving gear, a first driven gear, and a belt. The output end of the first motor is fixedly connected to the first driving gear. The first driving gear and the first driven gear are connected by a belt. The first driven gear is fixedly connected to a first connecting member.

[0009] The inner centrifugal unit includes an inner drum, a first rotating shaft, and a second connecting member. The inner drum contains a plug-in sleeve that is engaged with the first rotating shaft. Spiral blades are fixed to the outer side of the inner drum in the circumferential direction. The second connecting member is connected to the side wall of the inner drum opposite to the direction of the first connecting member.

[0010] The second drive unit is provided with a second motor, a second driving gear, a second driven gear and a belt. The output end of the second motor is fixedly connected to the second driving gear. The second driving gear and the second driven gear are connected by a belt. The second driven gear is fixedly connected to the first rotating shaft.

[0011] The feeding unit is equipped with a third motor, a second rotating shaft and a feeding pipe. The output end of the third motor is fixedly connected to the second rotating shaft. The second rotating shaft is located inside the feeding pipe. Spiral blades are connected to the outer circumference of the second rotating shaft. A feeding port is opened at the top of the feeding pipe.

[0012] The support unit is provided with a plurality of bearing seats, which are respectively connected to a first connecting member, a second connecting member and a first rotating shaft.

[0013] In the above technical solution, the first drive unit can drive the outer centrifugal unit to rotate at high speed, and the second drive unit can drive the inner centrifugal unit to rotate at high speed. When the outer centrifugal unit and the inner centrifugal unit rotate at high speed in the same direction, the relative speed of the water-laden material in the centrifuge can be reduced, so that the water-laden material reduces the force when it collides with the inner and outer drums and the spiral blades, thereby reducing the loss of material.

[0014] Furthermore, maintenance windows can be provided on the surface of the casing for easy routine maintenance.

[0015] Furthermore, the inner drum and the outer drum are conical, with the inner drum located inside the outer drum.

[0016] In the above technical solution, the use of a conical drum helps to improve separation efficiency. The conical drum structure can effectively increase the settling distance, making the solid-liquid separation more complete. In addition, the water-laden material moves from the smaller diameter end to the larger diameter end, which increases the dehydration time of the water-laden material in the conical drum and improves the dehydration rate.

[0017] Furthermore, the two baffles are respectively set at both ends of the outer drum to divide the inside of the machine casing into a transition zone, a drainage zone and a discharge zone, and the transition zone is close to one side of the feeding unit.

[0018] In the above technical solution, the baffle has an annular central opening, the size of which corresponds to the size of both ends of the outer drum. Moisture enters the drainage area through the screen holes on the outer drum, and material enters the discharge area through the opening between the inner and outer drums.

[0019] Furthermore, the outer drum is located within the drainage zone, and a drainage outlet is provided at the bottom of the portion of the housing located within the drainage zone.

[0020] Furthermore, a discharge port is provided at the bottom of the discharge area of ​​the housing.

[0021] In the above technical solution, the bottom of the casing has an inclined angle, which is conducive to the separation of water and materials freely sliding down to the drain outlet and discharge outlet by gravity.

[0022] Furthermore, the feed pipe is connected to one side of the outer drum, and the other side of the outer drum opposite to the feed pipe is an opening.

[0023] Furthermore, the centrifuge also includes a third connecting member, which connects the outer drum and the inner drum, and the feed pipe is connected to the third connecting member.

[0024] In the above technical solution, the circumferential side wall of the third connector is hollowed out, allowing water-laden material to pass through the third connector and enter the outer drum. The third connector has a cavity near the first connector, which forms a reflux chamber, allowing refluxed material to be stored in the reflux chamber. When the machine stops, the material in the reflux chamber re-enters the outer drum.

[0025] Furthermore, a sealing ring is provided at the connection between the outer drum and the first connecting member.

[0026] In the above technical solution, the sealing ring can block the backflow of material and prevent the backflow of material from overflowing.

[0027] Furthermore, the feed pipe is located inside the first connector, and the first and second connectors penetrate the machine casing.

[0028] Furthermore, one sidewall of the outer drum and the inner drum are on the same plane.

[0029] The advantages of this invention are:

[0030] 1. This invention pushes the water-laden material into the area between the outer and inner drums through the feeding unit. Under the action of centrifugal force, the material adheres to the inner wall of the outer drum, and the water is discharged through the screen holes on the circumference of the outer drum. The material is discharged from the discharge port under the push of the spiral blades on the outer wall of the inner drum. Since both the inner and outer drums can rotate at high speed, the relative movement speed of the material inside the centrifuge is relatively low, thereby achieving high-efficiency water-material separation and reducing material loss. The moisture content of the material can be reduced from 5% to below 3%, and the loss rate can be reduced to below 1%.

[0031] 2. In this invention, since the outer drum is also rotating at high speed, the probability of screen hole clogging is greatly reduced, making the outer drum almost maintenance-free and greatly improving production efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of the outer drum of the present invention;

[0036] Figure 4 This is a schematic diagram of the internal rotating drum of the present invention;

[0037] Figure 5 This is an enlarged view of part B of the present invention.

[0038] Illustration: 1. Casing, 101. Baffle, 102. Drain, 103. Discharge port, 2. External centrifugal unit, 201. External drum, 202. First connector, 203. Screen hole, 3. First drive unit, 301. First motor, 302. First drive gear, 303. First driven gear, 4. Internal centrifugal unit, 401. Internal drum, 402. First shaft, 403. Second connector, 404. Insert sleeve, 5. Second drive unit, 501. Second motor, 502. Second drive gear, 503. Second driven gear, 6. Feeding unit, 601. Third motor, 602. Second shaft, 603. Feed pipe, 604. Feed port, 7. Support unit, 701. Bearing seat, 8. Third connector, 9. Sealing ring, 10. Return chamber. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0040] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Example:

[0042] like Figure 1 , 2 As shown, a centrifuge is composed of a casing 1, an outer centrifugation unit 2, a first drive unit 3, an inner centrifugation unit 4, a second drive unit 5, a feeding unit 6, and a support unit 7.

[0043] The casing 1 has a maintenance window on its circumferential surface. During normal operation, an iron plate is fixed to the maintenance window and secured to the casing with screws and nuts. When maintenance is required, the iron plate can be removed by rotating the screws for easy routine maintenance. The casing 1 consists of two parts, upper and lower, which are fixed together with screws and nuts. A hanging ring is welded to each of the two sides of the upper part of the casing 1. When the centrifuge needs to be assembled or disassembled, the hanging ring can be hooked by the hook to lift and lower it, facilitating the assembly or disassembly of the centrifuge.

[0044] like Figure 3 As shown, the outer centrifuge unit 2 is provided with an outer drum 201 and a first connecting member 202. The outer drum 201 is located inside the casing 1. The outer drum 201 is conical and bell-shaped, with its left diameter being smaller than its right diameter. Screen holes 203 are evenly opened on the circumferential sidewall of the outer drum 201. These screen holes 203 are used to discharge moisture from the water-containing material. The first connecting member 202 is connected to the left sidewall of the outer drum 201, and the right side of the outer drum 201 is an opening.

[0045] The first drive unit 3 is provided with a first motor 301, a first driving gear 302, a first driven gear 303 and a belt. The output end of the first motor 301 is fixedly connected to the first driving gear 302. The first driving gear 302 and the first driven gear 303 are connected by a belt. The first driven gear 303 is fixedly connected to the first connecting member 202. A protective cover is provided on the outside of the first driving gear 302, the first driven gear 303 and the belt to prevent damage to the device.

[0046] The working principle of the above-mentioned external centrifugal unit 2 and the first drive unit 3 is as follows: when the first motor 301 is turned on, the output end of the first motor 301 rotates and drives the first active gear 302 to rotate. The first active gear 302 and the first passive gear 303 are driven by a belt. The rotation of the first passive gear 303 drives the first connecting piece 202 to rotate. The first connecting piece 202 drives the outer drum 201 to rotate. The rotation speed of the outer drum can be adjusted by adjusting the speed of the first motor 301.

[0047] like Figure 4 As shown, the inner centrifugal unit 4 is provided with an inner drum 401, a first rotating shaft 402, and a second connecting member 403. The inner drum 401 is provided with a plug-in sleeve 404, which is connected and fixed to the inner wall of the inner drum 401 through a connecting ring. The plug-in sleeve 404 is snapped into the first rotating shaft 402. The inner drum 401 is a hollow cone shape, with the diameter of the left side of the inner drum 401 being smaller than that of the right side. Its left side is closed, and a baffle is provided on the right side. The opening at the center of the baffle provides an insertion gap for the first rotating shaft 402. The second connecting member 403 is connected to the right side wall of the inner drum 401. A spiral blade is fixed on the outer side of the inner drum 401 in the circumferential direction, and the spiral blade has a certain extension distance to the left. This extension distance is less than the distance from the left side wall of the outer drum 201 to the left side wall of the inner drum 401. Here, the spiral blade has the function of driving the water-laden material entering the outer drum 201 from the feed pipe 603 to move to the right, and the spiral blade also has a certain function of diverting the water-laden material.

[0048] The second drive unit 5 is equipped with a second motor 501, a second driving gear 502, a second driven gear 503, and a belt. The output end of the second motor 501 is fixedly connected to the second driving gear 502. The second driving gear 502 and the second driven gear 503 are connected by a belt. The second driven gear 503 is fixedly connected to the first rotating shaft 402. Protective covers are provided on the outside of the second driving gear 502, the second driven gear 503, and the belt to prevent damage to the device.

[0049] The working principle of the second drive unit 5 and the inner centrifugal unit 4 is as follows: when the second motor 501 is turned on, the output end of the second motor 501 rotates and drives the second drive gear 502 to rotate. The second drive gear 502 and the second driven gear 503 are driven by a belt. The second driven gear 503 drives the first rotating shaft 402 to rotate. The first rotating shaft 402 drives the inner drum 401 to rotate. The rotation speed of the inner drum can be adjusted by adjusting the speed of the second motor 501.

[0050] The feeding unit 6 is equipped with a third motor 601, a second rotating shaft 602, and a feeding pipe 603. The output end of the third motor 601 is fixedly connected to the second rotating shaft 602. The second rotating shaft 602 is located inside the feeding pipe 603. Spiral blades are connected to the outer circumference of the second rotating shaft 602. A feeding port 604 is opened at the top of the feeding pipe 603. A feeding pipe is welded to the upper end of the feeding port 604. A flange is connected to the opening of the feeding pipe, which can be connected to the discharge pipe of the storage device through the flange, which facilitates operation and prevents water-laden materials from spilling out.

[0051] The support unit 7 is provided with four bearing seats 701, of which two bearing seats 701 are connected to the first connecting member 202, and the other two are respectively connected to the second connecting member 403 and the first rotating shaft 402. The first connecting member 202, the second connecting member 403 and the first rotating shaft 402 can rotate freely on the bearing seats 701.

[0052] like Figure 5 As shown, the centrifuge also includes a third connecting member 8, which connects the outer drum 201, the inner drum 401 and the feed pipe 603. A sealing ring 9 is provided at the connection between the outer drum 201 and the first connecting member 202.

[0053] The aforementioned third connector 8 consists of an annular plate and connecting strips evenly arranged along the circumference of the annular plate. The center of the annular plate is connected to the feed pipe 603. The left side of the annular plate of the third connector 8 forms a cavity with the left side of the outer drum 201 and part of the circumferential sidewall. This cavity is the return chamber 10. The third connector 8 is snapped into the inner drum 401 and can be rotatably connected to the outer drum 201 and the feed pipe 603, which plays the role of stabilizing the device and reducing noise. During feeding, the connecting strips on the third connector 8 divert the water-laden material entering the outer drum into the upper and lower sides of the outer drum, preventing material blockage and further improving the dewatering rate.

[0054] The aforementioned baffles 101 are respectively disposed at both ends of the outer drum 201, and are snapped into the outer shell at both ends of the outer drum 201 to divide the interior of the casing 1 into a transition zone, a drainage zone, and a discharge zone. The transition zone is close to one side of the feeding unit 6. The outer drum 201 is located in the drainage zone. A drainage port 102 is opened at the bottom of the drainage zone of the casing 1. The drainage port 102 can be connected to the outer drainage pipe. A flange is fixed at the end of the drainage pipe. Before the centrifuge is running, a water pipe can be connected to the drainage pipe through the flange, and the other end of the water pipe can be connected to the water storage tank for storing the separated water. A discharge port 103 is opened at the bottom of the discharge zone of the casing 1. The discharge port 103 is set directly downward, so that the dehydrated material falls freely by gravity, instead of the discharge port being set upward as used in the prior art, which is beneficial to saving production resources.

[0055] The bottom of the aforementioned casing 1 is tilted to the lower right, allowing moisture and materials to slide freely down the bottom wall of the casing 1, facilitating the discharge of moisture and materials.

[0056] In this embodiment, the centrifuge is fixed on a centrifuge frame, and the four bearing seats 701, the first motor 301, and the second motor 501 are all fixed on the centrifuge frame.

[0057] In this embodiment, the feed pipe 603 passes through the first connector 202 and communicates with the left side of the outer drum 201, and continues to extend into and connect with the third connector 8. The other end of the feed pipe 603 is located outside the first connector 202. The bottom of the feed pipe 603 located on the outside is provided with a bracket. The feed pipe 603 and the first connector 202 are rotatably connected. The feed pipe 603 is fixed to the centrifuge frame by the bracket and does not rotate with the rotation of the outer centrifuge unit 2. The first connector 202 and the second connector 403 pass through the housing 1. The housing 1 is fixed to the centrifuge frame and does not rotate with the rotation of the first connector 202 and the second connector 403.

[0058] In this embodiment, the right sidewalls of the outer drum 201 and the inner drum 401 are on the same vertical plane to form an annulus. The inner circle and the outer circle of the annulus are open, and the material enters the discharge area from the opening. However, it is not limited to this. In other embodiments, the right sidewall of the outer drum 201 may be offset to the right or left relative to the right sidewall of the inner drum 401. This technical solution depends on the effective dehydration distance of the water-laden material.

[0059] In this embodiment, the inner drum 401 and the outer drum 201 are conical, with one side having a smaller diameter than the other. The inner drum 401 is located inside the outer drum 201, and the inner drum 401 and the outer drum 201 are arranged in the same direction. The conical design can increase the dewatering distance of the water-laden material and increase the dewatering efficiency.

[0060] The workflow of this invention is as follows: Watery material is fed into the feed inlet 604. The third motor 601 is started, driving the second rotating shaft 602 to rotate. The spiral blades on the second rotating shaft 602 push the watery material into the middle area between the inner drum 401 and the outer drum 201. The first motor 301 and the second motor 501 are started, both driven by belts, causing the inner drum 401 and the outer drum 201 to rotate in the same direction. Under the action of centrifugal force, the watery material adheres to the inner wall of the outer drum 201. The water is discharged through the sieve holes 203 on the outer drum 201, entering the drainage area and finally being discharged through the drain outlet 102. The material is trapped between the inner drum 401 and the outer drum 201. Driven by the spiral blades on the outer wall of the inner drum 401, the material is pushed to the discharge area and discharged from the discharge outlet 103.

[0061] In the above workflow, backflow of water-laden materials may occur. Figure 5In the area shown, when the spiral blades of the feeding unit push the water-laden material into the outer drum 201, due to the high-speed rotation and the third connecting member 8, the water-laden material will be diverted, entering the outer drum 201 from the upper and lower sides. When the water-laden material is thrown to the upper side, a backflow phenomenon may occur. This backflowing water-laden material flows back to a part of the area between the third connecting member 8 and the first connecting member 202. To solve this problem, the present invention adopts the following method: First, since the spiral blades on the outer wall of the inner drum 401 extend to the left side wall of the outer drum 201, the backflow direction of the water-laden material will pass through the extension area of ​​the spiral blades on the outer wall of the inner drum 401. Under the push of the spiral blades on the outer wall of the inner drum 401, part of the backflowing material... First, the material is pushed into the normal process. Second, the third connecting member 8 of the present invention forms a return chamber 10 with the left side of the outer drum 201 and part of the circumferential side wall. The return material enters the return chamber 10 by inertia. When the machine stops, the return material is no longer subject to centrifugal force, and returns to the normal process along the bottom side wall of the outer drum 201 under the action of inertia. Third, since the return direction of the water-laden material moves to the upper left first, the water-laden material may impact the connection between the outer drum 201 and the first connecting member 202, causing water to overflow from the connection. The present invention provides a sealing ring 9 at the connection between the outer drum 201 and the first connecting member 202. The sealing ring 9 can block the return material and prevent overflow.

[0062] Application example:

[0063] PET bottle flakes and water were mixed at a mass ratio of 1:1 to obtain water-containing material A. PET tray flakes and water were mixed at a mass ratio of 1:1 to obtain water-containing material B. Water-containing material A and water-containing material B were dehydrated by passing them through the centrifuge described in the example and a conventional centrifuge, respectively. After dehydration, the material loss rate and the material moisture content were calculated, and the results are shown in Table 1.

[0064] Table 1

[0065] Material loss rate (material A with water content) Moisture content of materials (material A with water content) Material loss rate (material B with water content) Moisture content of materials (material B with water) Traditional centrifuge >5% >5% >10% >5% Example <1% <3% <1% <3%

[0066] As shown in Table 1, the centrifuge of the present invention can effectively reduce the material loss rate and moisture content of materials containing water after centrifugation. The material loss rate can be as low as below 1%, and the moisture content can be reduced to below 3%. In this invention, since both the inner and outer drums can rotate freely at high speed, by controlling the inner and outer drums to rotate at similar speeds in the same direction, the relative speed of the material containing water inside the centrifuge is low. Under this low relative speed, the force exerted on the material by the outer spiral blades of the inner drum and the walls of the inner and outer drums is reduced, thereby preventing the material from being worn down by collisions and thus reducing the material loss rate. Since the outer drum is also rotating at high speed, this state is unfavorable for the adhesion of solid powder, thus preventing powder agglomeration and sieve clogging. Furthermore, the dispersed solid powder is more easily flushed out of the sieve holes under the action of centrifugal force, further preventing sieve clogging.

[0067] Finally, it should be noted that this embodiment is only for illustrating the present invention and does not limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A centrifuge, characterized in that: The centrifuge includes: The housing (1) has two baffles (101) inside. An external centrifuge unit (2) is provided with an external rotating drum (201) and a first connecting member (202). The external rotating drum (201) is located inside the casing (1). The circumferential sidewall of the external rotating drum (201) is provided with a plurality of sieve holes (203). The first connecting member (202) is connected to one sidewall of the external rotating drum (201). The first drive unit (3) is provided with a first motor (301), a first driving gear (302), a first driven gear (303) and a belt. The output end of the first motor (301) is fixedly connected to the first driving gear (302). The first driving gear (302) and the first driven gear (303) are connected by a belt. The first driven gear (303) is fixedly connected to the first connecting piece (202). The inner centrifugal unit (4) is provided with an inner drum (401), a first rotating shaft (402) and a second connecting member (403). The inner drum (401) is provided with a plug sleeve (404), which is engaged with the first rotating shaft (402). The inner drum (401) has a spiral blade fixed on the outer side in the circumferential direction. The second connecting member (403) is connected to the side wall of the inner drum (401) opposite to the first connecting member (202). The second drive unit (5) is provided with a second motor (501), a second driving gear (502), a second driven gear (503) and a belt. The output end of the second motor (501) is fixedly connected to the second driving gear (502). The second driving gear (502) and the second driven gear (503) are connected by a belt. The second driven gear (503) is fixedly connected to the first rotating shaft (402). The feeding unit (6) is provided with a third motor (601), a second rotating shaft (602) and a feeding pipe (603). The output end of the third motor (601) is fixedly connected to the second rotating shaft (602). The second rotating shaft (602) is located inside the feeding pipe (603). Spiral blades are connected to the outer circumference of the second rotating shaft (602). A feeding port (604) is opened at the top of the feeding pipe (603). The support unit (7) is provided with a plurality of bearing seats (701), which are respectively connected to the first connecting member (202), the second connecting member (403) and the first rotating shaft (402); The centrifuge also includes a third connecting member (8), which connects the outer drum (201) and the inner drum (401). The feed pipe (603) is connected to the third connecting member (8). The third connecting member (8) consists of an annular plate and connecting strips evenly arranged along the circumference of the annular plate. The center of the annular plate is connected to the feed pipe (603). The left side of the annular plate of the third connecting member (8) forms a cavity with the left side of the outer drum (201) and part of the circumferential sidewall. The cavity is the reflux chamber (10). The third connector (8) is snapped into the inner drum (401) and rotatably connected to the outer drum (201) and the feed pipe (603). The feed pipe (603) passes through the first connector (202) and communicates with the left side of the outer drum (201) and continues to extend into the third connector (8). The other end of the feed pipe (603) is located outside the first connector (202). The bottom of the feed pipe (603) located outside the first connector (202) is provided with a bracket.

2. The centrifuge according to claim 1, characterized in that: The inner drum (401) and the outer drum (201) are conical, with the inner drum (401) located inside the outer drum (201).

3. The centrifuge according to claim 1, characterized in that: The two baffles (101) are respectively set at both ends of the outer drum (201) to divide the inside of the machine casing (1) into a transition zone, a drainage zone and a discharge zone. The transition zone is close to one side of the feeding unit (6).

4. The centrifuge according to claim 3, characterized in that: The outer drum (201) is located in the drainage area, and the housing (1) has a drainage outlet (102) at the bottom of the drainage area.

5. The centrifuge according to claim 3, characterized in that: The casing (1) has a discharge port (103) at the bottom of the discharge area.

6. The centrifuge according to claim 1, characterized in that: The feed pipe (603) is connected to one side of the outer drum (201), and the other side of the outer drum (201) opposite to the feed pipe (603) is open.

7. The centrifuge according to claim 1, characterized in that: A sealing ring (9) is provided at the connection between the outer drum (201) and the first connecting member (202).

8. The centrifuge according to claim 1, characterized in that: The feed pipe (603) is partially disposed inside the first connector (202), and the first connector (202) and the second connector (403) penetrate the housing (1).

9. The centrifuge according to claim 1, characterized in that: One sidewall of the outer drum (201) and the inner drum (401) is on the same plane.

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