CN112122016A

CN112122016A - Centrifugal filter of horizontal centrifuge

Info

Publication number: CN112122016A
Application number: CN202010965784.7A
Authority: CN
Inventors: 李亚军
Original assignee: Individual
Current assignee: Jiangsu Tongze Filter Technology Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2020-12-25
Anticipated expiration: 2040-09-15
Also published as: CN112122016B

Abstract

The invention relates to a centrifugal filter device of a horizontal centrifuge.A hollow rotating shaft is connected with a rotating drum and a power transmission device at two ends, liquid outlet holes are uniformly arranged on the wall of the rotating drum, and a dry material outlet is arranged on the wall of the rotating drum; the inner side of the rotary drum is provided with a screen and a spiral conveyor, the two ends of the central rotating shaft are connected with the spiral conveyor and a power transmission device, a mother liquor inlet pipe extends into the conveying shaft, the outer side of the screen is provided with a rigid screen cage, the screen is arranged on the inner side of the wall of the rotary drum in a sliding manner, a screen cage discharge port and a liquid discharge orifice are formed in the screen cage, the top end of the screen cage is provided with a connecting piece, an ultrasonic oscillator cavity is formed in the flange, the ultrasonic oscillator consists of an amplitude transformer and an ultrasonic transducer, the ultrasonic oscillator cavity comprises an amplitude transformer cavity and an ultrasonic transducer cavity, the amplitude transformer is arranged in the amplitude transformer cavity in a sliding manner, the ultrasonic transducers are symmetrically arranged in the ultrasonic transducer cavity, the amplitude transformer is fixedly connected with the connecting piece at the.

Description

Centrifugal filter of horizontal centrifuge

Technical Field

The invention relates to the field of separation machinery, in particular to a centrifugal filtering device of a horizontal centrifuge.

Background

The existing centrifuger mainly has two types, namely a vertical centrifuge and a horizontal centrifuge, and the horizontal centrifuge has the characteristic of continuous separation and uninterrupted work, so that the horizontal centrifuge has higher production efficiency compared with the vertical centrifuge, and the horizontal centrifuge is used in many industries.

Conventional horizontal centrifuges are generally classified into horizontal filter centrifuges and horizontal decanter centrifuges. Although the horizontal centrifuge can continuously work for a long time and continuously perform separation operation, the screen of the centrifuge drum can be blocked during long-time centrifugal separation, and the separation efficiency is influenced, so that the horizontal vibration centrifuge is realized, and the problem that the screen is easy to block is solved. At present, the working principle of the main part of the centrifugal machine, whether the centrifugal machine is a filtering centrifugal machine or a sedimentation/filtration compound type centrifugal machine, is as follows: the centrifugal machine is internally provided with a rotary drum, the side wall of the rotary drum is provided with a through hole, the inner wall of the rotary drum is provided with a screen, a material conveyor is arranged in an inner cavity of the rotary drum, a solid phase and a liquid phase are separated under the action of centrifugal force generated by high-speed rotation, the liquid phase is separated at an outer layer due to low relative density, the solid phase is separated at an inner layer due to high relative density, the liquid phase sequentially flies out through screen holes on the screen and liquid outlet holes on the rotary drum until a liquid outlet flows out, the solid phase at the inner layer is intercepted on the screen to form a filter cake, and the filter cake is.

However, the existing horizontal centrifuges all have the following problems: under the condition that the centrifugal machine works continuously, filter residues of filter cakes can block sieve holes on the screen, so that a liquid phase cannot be separated out, and the liquid phase and a solid phase are discharged to a solid phase outlet together to be discharged, so that the separation effect cannot be achieved. Therefore, the centrifuge needs to be stopped frequently to clean the screen mesh, and cannot work continuously, so that the production efficiency of enterprises is greatly influenced.

For this problem of screen cloth jam, also have the enterprise to take the technical scheme who is connected screen cloth and vibrating motor, vibrating motor begins work simultaneously at centrifuge during operation for the screen cloth reaches the purpose of clearance filter residue on the sieve mesh along axial vibration. However, this solution also has the following problems:

1. the vibration frequency of the vibration motor is low;

2. filter residues are possibly stuck in the filter screen and cannot come out;

3. the application range is limited, and the technical scheme of the vibrating motor is more suitable for industries with large solid-phase particle size, such as coal washing industry, aiming at the certain difference between the cleaning effect of the suspension vibrating motor with small solid-phase particle size and expectation.

Disclosure of Invention

The invention aims to provide a centrifugal filtering device of a horizontal centrifuge with a reasonable structure, which can enable the centrifuge to be suitable for turbid liquid with smaller solid-phase particle size, solve the problem that sieve pores are easy to block, ensure long-time continuous work of the centrifuge and improve the production efficiency of enterprises.

The technical scheme adopted by the invention is as follows:

the centrifugal filter device of the horizontal centrifuge comprises a horizontally arranged rotary drum, wherein the rotary drum is formed by enclosing a round rotary drum bottom and a barrel-shaped rotary drum wall, the rotary drum is connected with one end of a horizontally arranged hollow rotary shaft through the rotary drum bottom, the other end of the hollow rotary shaft is connected with a power transmission device, a flange is arranged at the opening end of the rotary drum, the outer edge of the flange is matched with and fixedly connected with the opening end of the rotary drum wall, a flange central hole is arranged along the central axis of the flange, a plurality of liquid outlet holes are uniformly formed in the rotary drum wall, and at least one dry material outlet is formed in the position, close to the opening end, of; a barrel-shaped screen mesh which is correspondingly matched with the wall of the rotary drum is arranged along the inner side of the rotary drum, a spiral conveyor is arranged in the screen mesh and comprises a conveying shaft at the middle part and spiral blades arranged on the conveying shaft, the root part of the conveying shaft is connected with one end of a central rotating shaft, the other end of the central rotating shaft penetrates through the hollow rotating shaft and is connected with a power transmission device, the extending end of the conveying shaft positioned in the rotary drum is of a hollow tubular structure, a mother liquid outlet is arranged on the conveying shaft, a mother liquid feeding pipe penetrates through the central hole of a flange and extends into the hollow pipe of the conveying shaft, a rigid screen cage which is matched and fixedly connected with the barrel-shaped screen mesh is arranged on the outer side of the barrel-shaped screen mesh and is made of a rigid material, the screen mesh is arranged on the wall on the inner side of the rotary drum wall in a sliding manner through the rigid screen cage, a corresponding screen cage discharge port is arranged on, the top of sieve cage is provided with the connecting piece set up the ultrasonic wave oscillator cavity in the flange in the mother liquor inlet pipe outside, the ultrasonic wave oscillator comprises a cylindrical amplitude transformer and two at least symmetric distribution's ultrasonic transducer, the ultrasonic wave oscillator cavity includes the amplitude transformer cavity of a cylindrical cavity and symmetric distribution and can hold two symmetric distribution's ultrasonic transducer cavity at least, the central axis of amplitude transformer cavity is coaxial with the central axis of flange, the amplitude transformer of ultrasonic wave oscillator slides and sets up in the amplitude transformer cavity, a plurality of ultrasonic transducer symmetries set up in the ultrasonic transducer cavity, amplitude transformer and the connecting piece fixed connection on sieve cage top, ultrasonic transducer is connected with supersonic generator through electrically conductive components and parts respectively.

The second technical scheme is that the centrifugal filtering device of the horizontal centrifuge comprises a horizontally arranged rotary drum and a sedimentation rotary drum, wherein the sedimentation rotary drum is formed by enclosing a circular sedimentation rotary drum bottom and a sedimentation rotary drum wall, a plurality of sedimentation liquid outlets are formed in the sedimentation rotary drum bottom, the sedimentation rotary drum is connected with one end of a horizontally arranged hollow rotary shaft through the sedimentation rotary drum bottom, and the other end of the hollow rotary shaft is connected with a power transmission device; the rotary drum is formed by enclosing a circular rotary drum bottom and a barrel-shaped rotary drum wall, the rotary drum bottom is communicated with a port of the sedimentation rotary drum wall, a flange is arranged at the opening end of the rotary drum, the outer edge of the flange is matched and fixedly connected with the opening end of the rotary drum wall, a flange central hole is arranged along the central axis of the flange, a plurality of liquid outlet holes are uniformly formed in the rotary drum wall, and at least one dry material outlet is formed in the position, close to the opening end, of the rotary drum wall; a barrel-shaped screen mesh which is correspondingly matched with the wall of the rotary drum is arranged along the inner side of the rotary drum, a spiral conveyor is arranged in the screen mesh, and the spiral conveyor comprises a conveying shaft in the middle and spiral blades arranged on the conveying shaft; a sedimentation conveyor is arranged in the sedimentation rotary drum and comprises a sedimentation shaft and sedimentation spiral blades arranged on the outer wall of the sedimentation shaft, one end of the sedimentation shaft penetrates through the conveying shaft and is rotatably connected with the flange, one end of the sedimentation shaft is fixedly connected with the conveying shaft, the other end of the sedimentation shaft is connected with one end of a central rotating shaft, and the other end of the central rotating shaft penetrates through the hollow rotating shaft and is connected with a power transmission device; the extension end of a sedimentation shaft in the sedimentation rotary drum is of a hollow tubular structure, the wall of the sedimentation shaft is provided with a plurality of sedimentation mother liquid outlets, a mother liquid feeding pipe penetrates through the center hole of a flange and extends into the hollow pipe of the sedimentation shaft, the conveying shaft is provided with a feeding outlet, the outer side of the barrel-shaped screen mesh is provided with a rigid screen cage which is matched with and fixedly connected with the barrel-shaped screen mesh, the rigid screen cage is made of rigid materials, the screen mesh is arranged on the wall of the inner side of the rotary drum wall in a sliding way through the rigid screen cage, the side wall of the screen cage corresponding to the dry material outlet of the rotary drum is provided with a corresponding screen cage discharge port, the side wall of the screen cage corresponding to the liquid discharge port is provided with a corresponding liquid discharge port, the top end of the screen cage is provided with a connecting piece, an ultrasonic oscillator cavity is arranged in the flange of the outer side of, the ultrasonic vibrator cavity comprises a cylindrical hollow amplitude transformer cavity and at least two ultrasonic transducer cavities, wherein the amplitude transformer cavity is symmetrically distributed, the central axis of the amplitude transformer cavity is coaxial with the central axis of the flange, the amplitude transformer of the ultrasonic vibrator is arranged in the amplitude transformer cavity in a sliding manner, the ultrasonic transducers are symmetrically arranged in the ultrasonic transducer cavities, the amplitude transformer is fixedly connected with a connecting piece at the top end of the screen cage, and the ultrasonic transducers are respectively connected with an ultrasonic generator through conductive components.

The centrifugal filter device of the horizontal centrifuge comprises a horizontally arranged rotary drum, wherein the rotary drum is formed by enclosing a circular rotary drum bottom and a composite rotary drum wall, the composite rotary drum wall comprises two sections, the composite rotary drum wall consists of a sedimentation wall and a barrel-shaped rotary drum wall, the rotary drum is connected with one end of a horizontally arranged hollow rotary shaft through the rotary drum bottom, a plurality of rotary drum bottom liquid outlets are formed in the rotary drum bottom, the other end of the hollow rotary shaft is connected with a power transmission device, a flange is arranged at the opening end of the rotary drum, the outer edge of the flange is matched and fixedly connected with the opening end of the rotary drum, a flange central hole is formed along the central axis of the flange, a plurality of liquid outlet holes are uniformly formed in the rotary drum wall, and at least one dry material outlet is formed; the drum type screen comprises a drum wall, a drum screen and a spiral conveyor, wherein the drum wall is internally provided with a barrel-shaped screen mesh which is correspondingly matched with the drum wall, the spiral conveyor comprises a conveying shaft in the middle and spiral blades arranged on the conveying shaft, one end of the conveying shaft is rotationally connected with the inner wall of a flange, the other end of the conveying shaft is connected with one end of a central rotating shaft, the other end of the central rotating shaft penetrates through the hollow rotating shaft to be connected with a power transmission device, the extending end of the conveying shaft in the drum is in a hollow tubular structure, the conveying shaft is provided with a mother liquid outlet, a mother liquid feeding pipe penetrates through the central hole of the flange to extend into the hollow pipe of the conveying shaft, the outer side of the barrel-shaped screen mesh is provided with a rigid screen cage which is matched with and fixedly connected with the barrel-shaped screen mesh, the rigid screen cage is made of rigid material, the screen mesh is arranged on the wall on the inner side of, the liquid discharging device comprises a screen cage, a liquid outlet hole is formed in the side wall of the screen cage, the side wall of the screen cage is provided with a corresponding liquid discharging hole, the top end of the screen cage is provided with a connecting piece, an ultrasonic oscillator cavity is formed in a flange outside a mother liquid inlet pipe, the ultrasonic oscillator comprises a columnar amplitude transformer and at least two ultrasonic transducers which are symmetrically distributed, the ultrasonic oscillator cavity comprises a columnar hollow amplitude transformer cavity and at least two ultrasonic transducer cavities which can contain two symmetric distributions, the central axis of the amplitude transformer cavity is coaxial with the central axis of the flange, the amplitude transformer of the ultrasonic oscillator is arranged in the amplitude transformer cavity in a sliding mode, the ultrasonic transducers are symmetrically arranged in the ultrasonic transducer cavities, the amplitude transformer is fixedly connected with the connecting piece at the top end of the screen cage, and the ultrasonic transducers are respectively connected with an ultrasonic generator.

Further, the conductive component can be a wired conductive structure, including: the other end of the first lead is connected with each conductive slip ring; the electric brushes are arranged in the centrifuge shell and correspondingly contacted with the conductive slip ring; and one ends of the second conducting wires are respectively connected with the electric brushes, and the other ends of the second conducting wires are connected with the ultrasonic wave. Of course, the conductive component may also be a wireless conductive structure or other electrical connection manner, so as to implement wireless conductive or other electrical connection.

Furthermore, the power transmission device connected with the hollow rotating shaft and the central rotating shaft is a differential transmission device.

Further, the horn of the ultrasonic transducer may have an annular structure or may have a structure having another symmetrical shape.

Further, the outer wall of the screen cage comprises a plurality of ribs, and the ribs are fixedly connected to the outer wall of the screen mesh through spot welding.

Further, the screen cage comprises a barrel-shaped thin plate with a plurality of small holes uniformly distributed, and the thin plate is fixedly connected to the outer wall of the screen mesh through spot welding.

The invention has the following beneficial effects:

when the horizontal centrifuge works, mother liquor enters the spiral conveyor from the mother liquor feeding pipe, materials fly out under the action of centrifugal force, liquid phase is at the outer layer and solid phase is at the inner layer during separation due to density difference, the liquid phase sequentially flies out through the liquid outlet holes of the screen and the rotary drum and finally converges to the liquid phase outlet arranged on the machine shell to flow out, the solid phase at the inner layer is intercepted by the screen to form filter cake, and the filter cake is discharged to the discharge hole of the screen cage under the combined action of the centrifugal force and the spiral blade and sequentially passes through the discharge hole of the screen cage and the dry material outlet to the solid phase outlet arranged on the machine shell to be discharged.

In the separation process, the ultrasonic generator starts to work, voltage is converted into a high-frequency alternating current signal matched with the ultrasonic transducer, the high-frequency alternating current signal is input into the ultrasonic transducer through the conductive element, and the ultrasonic transducer can perform ultrasonic frequency reciprocating vibration along the direction of the central shaft of the screen cage. The ultrasonic transducers are symmetrically arranged on the end face of the amplitude transformer, so that the ultrasonic transducers drive the amplitude transformer to perform ultrasonic frequency reciprocating vibration, and the amplitude transformer is fixedly connected with the connecting piece of the screen cage which is fixedly connected with the rigid screen, so that the screen is also driven to perform ultrasonic frequency reciprocating vibration.

When filter residue blocks the sieve holes of the sieve screen, the filter residue in the sieve screen may have one or more of the following effects because the sieve screen performs ultrasonic frequency uninterrupted reciprocating vibration:

1. the filter residue breaks away from the sieve mesh under the vibration of hyperfrequency, and the liquid phase that passes through the sieve cage also can produce corresponding vibration velocity and acceleration simultaneously, makes the filter residue receive frequent and violent impact thereby drop.

2. Ultrasonic waves are formed in the liquid phase in the vibration process, cavitation effect is generated when the ultrasonic waves are transmitted in the liquid phase, the liquid is cavitated into cavitation bubbles, thousands of atmospheric pressure can be generated around the cavitation bubbles by shock waves generated when the cavitation bubbles are suddenly closed, filter residues are repeatedly impacted, the adsorption of the filter residues on the surface of the screen cage is damaged, and the filter residues fall back into the spiral conveyor until a solid phase outlet is discharged;

3. the shock wave generated when the cavitation bubbles are suddenly closed can also crush part of filter residue to enable the filter residue powder to fly into a liquid phase and be discharged along with the liquid phase;

4. meanwhile, the cavitation bubbles can also be drilled into cracks to vibrate, so that filter residues fall off;

5. cavitation bubbles cause a circulation of the liquid itself during vibration, so-called acoustic streaming. The vibrating air bubble surface has high speed gradient and viscous stress, so that the filter residue in the sieve pores is damaged and falls off.

In conclusion, the centrifugal machine can be suitable for turbid liquid with small solid phase particle size, has better cleaning effect compared with a vibration motor, better solves the problem that the sieve pores are easy to block, ensures the smoothness of the sieve pores, ensures the long-time continuous work of the centrifugal machine, improves the production efficiency of enterprises, and can also ensure that the separated solid phase is thinner and the separation effect is better.

Drawings

Fig. 1 is a sectional view of a horizontal centrifuge according to a first embodiment of the present invention.

Fig. 2 is an enlarged view of fig. 1 at a.

Fig. 3 is a schematic view of a combination of a drum, a flange and a screen cage according to a first embodiment of the present invention.

Fig. 4 is an enlarged view of fig. 3 at B.

Fig. 5 is a sectional view of the horizontal centrifuge in a second embodiment of the present invention.

Fig. 6 is an enlarged view of fig. 5 at C.

Fig. 7 is a schematic view of a combination of a drum, a flange and a screen cage according to a second embodiment of the present invention.

Fig. 8 is an enlarged view of fig. 7 at D.

FIG. 9 is a sectional view of the horizontal centrifuge in accordance with the third embodiment of the present invention.

Fig. 10 is an enlarged view of fig. 9 at E.

Fig. 11 is an enlarged view of fig. 10 at F.

Fig. 12 is an enlarged view of fig. 11 at G.

Fig. 13 is a cross-sectional view of a rib type screen cage according to the present invention.

Fig. 14 is a perspective view of the rib type screen cage of the present invention.

FIG. 15 is a cross-sectional view of a sheet-type screen cage of the present invention.

Fig. 16 is a perspective view of a lamella-type screen cage according to the present invention.

Wherein: 1. a drum; 101. rotating the drum bottom; 1011. a drum bottom liquid outlet; 102. a drum wall; 103. a liquid outlet hole; 104. a dry material outlet; 105. compounding drum walls; 1051. a settling wall; 2. a hollow rotating shaft; 3. a flange; 301. a central hole of the flange; 302. an ultrasonic oscillator cavity; 3021. a horn chamber; 3022. an ultrasonic transducer cavity; 4. screening a screen; 5. a screw conveyor; 501. a delivery shaft; 502. helical leaves; 503. a mother liquor outlet; 504. a feed outlet; 6. a central rotating shaft; 7. a mother liquor feeding pipe; 8. a screen cage; 801. a discharge port of the screen cage; 802. a connecting member; 803. ribs; 804. a thin plate; 9. an ultrasonic vibrator; 901. an amplitude transformer; 902. an ultrasonic transducer; 10. an ultrasonic generator; 11. settling the rotary drum; 1101. settling and rotating the drum bottom; 1102. settling the drum wall; 1103. a settling liquid outlet; 12. a settling conveyor; 1201. a settlement shaft; 1202. settling spiral leaves; 1203. a settled mother liquor outlet; 13. a first conductive line; 14. a conductive slip ring; 15. a centrifuge housing; 1501. a liquid phase outlet; 1502. a solid phase outlet; 1503. a shock absorber; 16. an electric brush; 17. a second conductive line; 18. a differential transmission device.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Fig. 1 to 4, 13 and 14 show that a first embodiment of a centrifugal filter device of a horizontal centrifuge includes a drum 1 of the centrifuge, the drum 1 is enclosed by a circular drum bottom 101 and a barrel-shaped drum wall 102, the drum 1 is connected with one end of a hollow rotating shaft 2 through the drum bottom 101, the other end of the hollow rotating shaft 2 is connected with a differential transmission device 18, a flange 3 is arranged at an upper port of the drum 1, the outer edge of the flange 3 is matched and fixedly connected with the upper port of the drum wall 102, a flange central hole 301 is arranged along the central axis of the flange 3, a plurality of liquid outlet holes 103 are uniformly arranged on the drum wall 102, and at least one dry material outlet 104 is arranged at a position of the drum wall 102 close to the upper port; a barrel-shaped screen 4 which is correspondingly matched with the drum wall 102 is arranged along the inner side of the rotary drum 1, a spiral conveyor 5 is arranged in the screen 4, the spiral conveyor 5 comprises a conveying shaft 501 in the middle and spiral blades 502 arranged on the conveying shaft 501, the root of the conveying shaft 501 is connected with one end of a central rotating shaft 6, the other end of the central rotating shaft 6 passes through a hollow rotating shaft 2 to be connected with a differential transmission device 18, the extending end of the conveying shaft 501 in the rotary drum 1 is in a hollow tubular structure, a mother liquor feeding pipe 7 passes through a flange central hole 301 to extend into a hollow pipe part of the conveying shaft 501, a mother liquor outlet 503 is also arranged on the conveying shaft 501, the outer side of the barrel-shaped screen 4 is in spot welding with ribs 803, so that the screen 4 is fixedly connected with a rigid screen cage 8, the rigid screen cage 8 is made of a rigid material, the screen 4 is arranged on the wall on the inner side of the drum wall 102 in a sliding way through the rigid screen cage 8, a corresponding screen outlet 801, the side wall of the sieve cage 8 corresponding to the liquid outlet hole 103 is provided with a corresponding liquid discharge hole, the top end of the sieve cage 8 is provided with a connecting piece 802, the flange 3 at the outer side of the mother liquid inlet pipe 7 is internally provided with an ultrasonic vibrator cavity 302, the ultrasonic vibrator 9 consists of an annular cylindrical amplitude transformer 901 and at least two ultrasonic transducers 902 which are symmetrically distributed, the ultrasonic vibrator cavity 302 comprises a cylindrical hollow amplitude transformer cavity 3021 which is symmetrically distributed and at least two ultrasonic transducer cavities 3022 which can accommodate two ultrasonic transducers which are symmetrically distributed, the central axis of the amplitude transformer cavity 3021 is consistent with the central axis of the flange 3, the amplitude transformer 901 of the ultrasonic vibrator 9 is arranged in the amplitude transformer cavity 3021 in a sliding manner, a plurality of the ultrasonic transducers 902 are symmetrically arranged in the ultrasonic transducer cavity 3021, the amplitude transformer 901 is fixedly connected with the connecting piece 802 at the top end of the sieve cage 8, one end of the first lead 13 is connected with the ultrasonic, the other end of the first lead 13 is connected with the conductive slip ring 14, a brush 16 which is correspondingly contacted with the conductive slip ring 14 is fixedly arranged in the centrifuge shell 15, one end of a second lead 17 is respectively connected with the brush, and the other end of the second lead 17 is connected with the ultrasonic generator 10. The bottom end of the centrifuge housing 15 is provided with a damper 1503, and the centrifuge housing 15 is provided with a liquid phase outlet 1501 for liquid outflow and a solid phase outlet 1502 for solid discharge.

After the present embodiment is used, in the present embodiment, when the horizontal centrifuge starts to work, the hollow rotating shaft 2 and the central rotating shaft 6 are driven by the differential transmission device 18 to rotate with a rotation speed difference, so that the rotary drum 1 and the screw conveyor 5 are driven by the hollow rotating shaft 2 and the central rotating shaft 6 respectively to rotate with a rotation speed difference. Mother liquor enters the spiral conveyor 5 from the mother liquor feeding pipe 7, flies out through the mother liquor outlet 503 along with the rotation of the spiral conveyor 5, because of the density difference of liquid phase and solid phase, the liquid phase is separated at the outer layer and the solid phase is at the inner layer, the liquid phase flies out through the sieve holes and the liquid outlet holes 103 on the sieve 4 successively and finally flows to the liquid phase outlet 1501 to be discharged, the solid phase at the inner layer is intercepted by the sieve 4 to form filter cake, and the filter cake flies out to the solid phase outlet 1502 to be discharged after being discharged to the dry material outlet 104 under the combined action of centrifugal force and the spiral blade 502. Meanwhile, the ultrasonic generator 10 starts to work, the ultrasonic generator 10 converts voltage into a high-frequency alternating current signal matched with the ultrasonic transducer 902, the high-frequency alternating current signal is input into the brush 16 through the second lead 17, the brush 16 rotates along with the flange 3, the contact between the brush 16 and the conductive slip ring 14 ensures that the high-frequency alternating current signal can be transmitted into the conductive slip ring 14 through the brush 16, finally the high-frequency alternating current signal is input into the ultrasonic transducer 902 through the first lead 13, and the plurality of symmetrical ultrasonic transducers 902 jointly act on the amplitude transformer 901, so that the ultrasonic transducer 902 drives the amplitude transformer 901 to vibrate in the ultrasonic vibrator cavity 302 for multiple times. Because the amplitude transformer 901 is fixedly connected with the connecting piece 802 of the screen cage 8, the screen cage 8 drives the screen 4 to vibrate at an ultrasonic frequency, so that filter residues possibly blocked in the screen 4 are removed.

As shown in fig. 5 to 8, 15 and 16, a second embodiment of the centrifugal filter device of the horizontal centrifuge comprises a drum 1 and a sedimentation drum 11 which are horizontally arranged, wherein the sedimentation drum 11 is formed by enclosing a circular sedimentation drum bottom 1101 and a sedimentation drum wall 1102, a plurality of sedimentation liquid outlets 1103 are formed in the sedimentation drum bottom 1101, the sedimentation drum 11 is connected with one end of a horizontally arranged hollow rotating shaft 2 through the sedimentation drum bottom 1101, and the other end of the hollow rotating shaft 2 is connected with a differential transmission device 18; the rotary drum 1 is formed by enclosing a circular rotary drum bottom 101 and a barrel-shaped rotary drum wall 102, the rotary drum bottom 101 is communicated with a port of a settlement rotary drum wall 1102, a flange 3 is arranged at the opening end of the rotary drum 1, the outer edge of the flange 3 is matched and fixedly connected with the opening end of the rotary drum wall 102, a flange central hole 301 is arranged along the central axis of the flange 3, a plurality of liquid outlet holes 103 are uniformly formed in the rotary drum wall 102, and at least one dry material outlet 104 is formed in the position, close to the opening end, of the rotary drum wall 102; a barrel-shaped screen 4 which is correspondingly matched with the drum wall 102 is arranged along the inner side of the rotary drum 1, a screw conveyor 5 is arranged in the screen 4, and the screw conveyor 5 comprises a conveying shaft 501 in the middle and a spiral blade 502 arranged on the conveying shaft 501; a sedimentation conveyor 12 is arranged in the sedimentation rotary drum 11, the sedimentation conveyor 12 comprises a sedimentation shaft 1201 and sedimentation spiral blades 1202 arranged on the outer wall of the sedimentation shaft 1201, one end of the sedimentation shaft 1201 penetrates through the conveying shaft 501 to be rotatably connected with the flange 3, one end of the sedimentation shaft 1201 is fixedly connected with the conveying shaft 501, the other end of the sedimentation shaft 1201 is connected with one end of a central rotating shaft 6, and the other end of the central rotating shaft 6 penetrates through the hollow rotating shaft 2 to be connected with a power transmission device; the extension end of a settlement shaft 1201 positioned in a settlement rotary drum 11 is of a hollow tubular structure, the wall of the settlement shaft 1201 is provided with a plurality of settlement mother liquid outlets 1203, a mother liquid feed pipe 7 passes through a flange central hole 301 and extends into the hollow pipe of the settlement shaft 1201, a feed outlet 504 is arranged on a delivery shaft 501, the outer side of a barrel-shaped screen 4 is in spot welding with a thin plate 804, so that the screen 4 is fixedly connected with a rigid screen cage 8, the rigid screen cage 8 is made of rigid materials, the screen 4 is arranged on the wall of the inner side of the rotary drum wall 102 in a sliding way through the rigid screen cage 8, the side wall of the screen cage 8 corresponding to a dry material outlet 104 of the rotary drum 1 is provided with a corresponding screen cage discharge port 801, the side wall of the screen cage 8 corresponding to a liquid discharge hole 103 is provided with a corresponding liquid discharge hole, the top end of the screen cage 8 is provided with a connecting piece 802, an ultrasonic oscillator cavity 302 is arranged in a flange 3 at the outer side of the mother liquid feed The ultrasonic vibrator cavity 302 comprises a cylindrical hollow and symmetrically distributed amplitude transformer cavity 3021 and at least two symmetrically distributed ultrasonic transducer cavities 3022, the central axis of the amplitude transformer cavity 3021 is coaxial with the central axis of the flange 3, an amplitude transformer 901 of the ultrasonic vibrator 9 is slidably arranged in the amplitude transformer cavity 3021, a plurality of ultrasonic transducers 902 are symmetrically arranged in the ultrasonic transducer cavity 3022, the amplitude transformer 901 is fixedly connected with a connecting piece 802 at the top end of the sieve cage 8, one end of a first lead 13 is connected with the ultrasonic transducers 902, the other end of the first lead 13 is connected with a conductive slip ring 14, the electric brush 16 corresponding to the conductive slip ring 14 is fixedly arranged in the centrifuge shell 15, one end of the second lead 17 is respectively connected with the electric brush, the other end of the second lead 17 is connected with the ultrasonic generator 10, and the centrifuge shell 15 is provided with two liquid phase outlets 1501 for liquid outflow and a solid phase outlet 1502 for solid discharge.

In this embodiment, after the horizontal centrifuge starts to work, the hollow rotating shaft 2 and the central rotating shaft 6 are driven by the differential transmission device 18 to rotate with a rotation speed difference, the sedimentation conveyor 12 is driven by the central rotating shaft 6 to rotate, mother liquor enters the sedimentation conveyor 12 from the mother liquor feeding pipe 7, the mother liquor firstly flies out from a sedimentation mother liquor outlet 1203, first solid-liquid separation is carried out in the sedimentation drum 11, part of the liquid flows out from the sedimentation liquid outlet 1103 and finally is discharged through a liquid phase outlet 1501, the mixture of the liquid after the first separation is pushed by the sedimentation spiral blade 1202 and enters the interior of the spiral conveyor 5 through the feeding outlet 504 to carry out secondary separation, similarly by utilizing the density difference, the liquid phase is separated at the outer layer and the solid phase is at the inner layer, the liquid phase flies out through the sieve holes and the liquid outlet 103 on the sieve 4 in sequence and finally flows to the liquid phase outlet 1501 to be discharged, the solid phase at the inner, the filter cake is discharged to the dry material outlet 104 by the combined action of the centrifugal force and the spiral blades 502, and then discharged through the solid phase outlet 1502. Meanwhile, the ultrasonic generator 10 starts to work, the ultrasonic generator 10 converts the voltage into a high-frequency alternating current signal matched with the ultrasonic transducer 902, the high-frequency alternating current signal is input into the electric brush 16 through the second lead 17, the electric brush 16 is in contact with the conductive slip ring 14, the high-frequency alternating current signal can be transmitted into the conductive slip ring 14 through the electric brush 16, and the high-frequency alternating current signal is input into the ultrasonic transducer 902 through the first lead 13, so that the ultrasonic transducer 902 vibrates in the ultrasonic vibrator cavity 302 at an ultrasonic frequency. Because the amplitude transformer 901 is fixedly connected with the connecting piece 802 of the sieve cage 8, the ultrasonic transducer 902 drives the sieve cage 8 and the sieve screen 4 to vibrate at an ultrasonic frequency, so that filter residues possibly blocked in the sieve screen 4 are removed.

As shown in fig. 9 to 12, 15 and 16, a third embodiment of a centrifugal filter device of a horizontal centrifuge comprises a horizontally arranged rotary drum 1, the rotary drum 1 is formed by enclosing a circular rotary drum bottom 101 and a composite rotary drum wall 105, the composite rotary drum wall 105 is formed by a settling wall 1051 and a barrel-shaped rotary drum wall 102, the rotary drum 1 is connected with one end of a horizontally arranged hollow rotary shaft 2 through the rotary drum bottom 101, a plurality of rotary drum bottom liquid outlets 1011 are formed on the rotary drum bottom 101, the other end of the hollow rotary shaft 2 is connected with a differential transmission device 18, a flange 3 is arranged at an opening end of the rotary drum 1, an outer edge of the flange 3 is matched and fixedly connected with the opening end of the rotary drum 1, a flange center hole 301 is formed along a central axis of the flange 3, a plurality of liquid outlets 103 are uniformly formed on the rotary drum wall 102, and at least one dry material outlet 104 is formed at a position of the rotary; a barrel-shaped screen 4 which is correspondingly matched with the drum wall 102 is arranged along the inner side of the drum wall 102, a screw conveyor 5 is arranged in the drum 1, the screw conveyor 5 comprises a conveying shaft 501 in the middle and a spiral blade 502 arranged on the conveying shaft 501, one end of the conveying shaft 501 is rotatably connected with the inner wall of the flange 3, the other end of the conveying shaft 501 is connected with one end of a central rotating shaft 6, the other end of the central rotating shaft 6 penetrates through the hollow rotating shaft 2 to be connected with a power transmission device, the extending end of the conveying shaft 501 in the drum 1 is in a hollow tubular structure, a mother liquor outlet 503 is arranged on the conveying shaft 501, a mother liquor feeding pipe 7 penetrates through the central hole 301 of the flange to extend into the hollow pipe of the conveying shaft 501, the outer side of the barrel-shaped screen 4 is in spot welding with a thin plate 804, so that the screen 4 is fixedly connected with the rigid screen 8, the rigid screen 8 which is matched and, the screen mesh 4 is arranged on the wall of the inner side of the rotary drum wall 102 in a sliding way through the rigid screen cage 8, the side wall of the screen cage 8 corresponding to the dry material outlet 104 of the rotary drum wall 102 is provided with a corresponding screen cage discharge port 801, the side wall of the screen cage 8 corresponding to the liquid outlet 103 is provided with a corresponding liquid discharge port, the top end of the screen cage 8 is provided with a connecting piece 802, the flange 3 on the outer side of the mother liquid feeding pipe 7 is internally provided with an ultrasonic vibrator cavity 302, the ultrasonic vibrator 9 consists of an annular columnar amplitude transformer 901 and at least two symmetrically distributed ultrasonic transducers 902, the ultrasonic vibrator cavity 302 comprises a columnar hollow symmetrically distributed amplitude transformer cavity 3021 and at least two symmetrically distributed ultrasonic cavities 3022, the central axis of the amplitude transformer cavity 3021 is coaxial with the central axis of the flange 3, the amplitude transformer 901 of the ultrasonic vibrator 9 is arranged in the amplitude transformer cavity 3021 in a sliding way, a plurality of ultrasonic transducers 902 are symmetrically arranged in an ultrasonic transducer cavity 3022, a horn 901 is fixedly connected with a connecting piece 802 at the top end of a screen cage 8, one end of a first lead 13 is connected with the ultrasonic transducers 902, the other end of the first lead 13 is connected with a conductive slip ring 14, a brush 16 which is correspondingly contacted with the conductive slip ring 14 is fixedly arranged in a centrifuge shell 15, one end of a second lead 17 is respectively connected with the brush, the other end of the second lead 17 is connected with an ultrasonic generator 10, and the centrifuge shell 15 is provided with two liquid phase outlets 1501 for liquid outflow and a solid phase outlet 1502 for solid discharge.

After the present embodiment is used, in the present embodiment, when the horizontal centrifuge starts to work, the hollow rotating shaft 2 and the central rotating shaft 6 are driven by the differential transmission device 18 to rotate with a rotation speed difference, so that the rotary drum 1 and the screw conveyor 5 are driven by the hollow rotating shaft 2 and the central rotating shaft 6 respectively to rotate with a rotation speed difference. Mother liquor enters the spiral conveyor 5 from a mother liquor feeding pipe 7, flies out through a mother liquor outlet 503 along with the rotation of the spiral conveyor 5, first solid-liquid separation is carried out in a settling wall 1051, part of the liquid flows out from a liquid outlet 1011 at the bottom of the rotary drum and is finally discharged through a liquid phase outlet 1501, a mixture containing certain liquid is pushed by the spiral blades 502 and enters the rotary drum wall 102 for secondary separation, similarly, the liquid phase is separated at the outer layer and the solid phase is at the inner layer by utilizing density difference, the liquid phase flies out through sieve holes and liquid outlet holes 103 on the sieve 4 in sequence and finally flows to the liquid phase outlet 1501 to be discharged, the solid phase at the inner layer is intercepted by the sieve 4 to form a filter cake, and the filter cake is discharged to a dry material outlet 104 under the combined action of centrifugal force and the spiral blades 502 and then is discharged through. Meanwhile, the ultrasonic generator 10 starts to work, the ultrasonic generator 10 converts voltage into a high-frequency alternating current signal matched with the ultrasonic transducer 902, the high-frequency alternating current signal is input into the brush 16 through the second lead 17, the brush 16 rotates along with the flange 3, the contact between the brush 16 and the conductive slip ring 14 ensures that the high-frequency alternating current signal can be transmitted into the conductive slip ring 14 through the brush 16, finally the high-frequency alternating current signal is input into the ultrasonic transducer 902 through the first lead 13, and the plurality of symmetrical ultrasonic transducers 902 jointly act on the amplitude transformer 901, so that the ultrasonic transducer 902 drives the amplitude transformer 901 to vibrate in the ultrasonic vibrator cavity 302 for multiple times. Because the amplitude transformer 901 is fixedly connected with the connecting piece 802 of the screen cage 8, the screen cage 8 drives the screen 4 to vibrate at an ultrasonic frequency, so that filter residues possibly blocked in the screen 4 are removed.

The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.

Claims

1. A centrifugal filtering device of a horizontal centrifuge comprises a rotary drum (1) which is horizontally arranged, wherein the rotary drum (1) is formed by enclosing a round rotary drum bottom (101) and a barrel-shaped rotary drum wall (102), the rotary drum (1) is connected with one end of a horizontally arranged hollow rotary shaft (2) through the rotary drum bottom (101), the other end of the hollow rotary shaft (2) is connected with a power transmission device, a flange (3) is arranged at the opening end of the rotary drum (1), the outer edge of the flange (3) is matched and fixedly connected with the opening end of the rotary drum wall (102), a flange central hole (301) is arranged along the central axis of the flange (3), a plurality of liquid outlet holes (103) are uniformly formed in the rotary drum wall (102), and at least one dry material outlet (104) is formed in the position, close to the opening end, of the rotary drum; be provided with along the inboard of rotary drum (1) with rotary drum wall (102) each other correspond complex tubbiness screen cloth (4), be provided with auger delivery ware (5) in screen cloth (4), auger delivery ware (5) are including transport axle (501) at middle part and spiral leaf (502) of setting on transport axle (501), the root of transport axle (501) is connected with the one end of central pivot (6), the other end of central pivot (6) passes cavity pivot (2) and is connected with power transmission, transport axle (501) that are located in rotary drum (1) stretch out the end and be the hollow tubular structure, mother liquor outlet (503) have been seted up on transport axle (501), mother liquor inlet pipe (7) pass flange centre bore (301) and stretch into in the cavity tube of transport axle (501), its characterized in that: the outer side of the barrel-shaped screen (4) is provided with a rigid screen cage (8) which is matched with the rigid screen (4) and fixedly connected with the rigid screen cage, the rigid screen cage (8) is made of rigid materials, the screen (4) is arranged on the wall of the inner side of the rotary drum wall (102) in a sliding mode through the rigid screen cage (8), the side wall of the screen cage (8) corresponding to the dry material outlet (104) of the rotary drum (1) is provided with a corresponding screen cage discharge hole (801), the side wall of the screen cage (8) corresponding to the liquid outlet hole (103) is provided with a corresponding liquid discharge hole, the top end of the screen cage (8) is provided with a connecting piece (802), an ultrasonic vibrator (302) is arranged in a flange (3) on the outer side of the mother liquid feed pipe (7), the ultrasonic vibrator (9) is composed of a cylindrical amplitude-changing rod (901) and at least two ultrasonic transducers (902) which are symmetrically distributed, and the ultrasonic vibrator (302) comprises a cylindrical hollow amplitude-changing rod cavity (3021) which is symmetrically distributed The ultrasonic vibration sieve comprises an ultrasonic transducer cavity (3022) which is arranged, wherein the central axis of the amplitude transformer cavity (3021) is coaxial with the central axis of a flange (3), an amplitude transformer (901) of an ultrasonic vibrator (9) is arranged in the amplitude transformer cavity (3021) in a sliding manner, a plurality of ultrasonic transducers (902) are symmetrically arranged in the ultrasonic transducer cavity (3022), the amplitude transformer (901) is fixedly connected with a connecting piece (802) at the top end of a sieve cage (8), and the ultrasonic transducers (902) are respectively connected with an ultrasonic generator (10) through conductive components.

2. The centrifugal filtering device of the horizontal centrifuge comprises a rotating drum (1) and a settling rotating drum (11) which are horizontally arranged, wherein the settling rotating drum (11) is formed by enclosing a circular settling rotating drum bottom (1101) and a settling rotating drum wall (1102), a plurality of settling liquid outlets (1103) are formed in the settling rotating drum bottom (1101), the settling rotating drum (11) is connected with one end of a hollow rotating shaft (2) which is horizontally arranged through the settling rotating drum bottom (1101), and the other end of the hollow rotating shaft (2) is connected with a power transmission device; the rotary drum (1) is formed by enclosing a circular rotary drum bottom (101) and a barrel-shaped rotary drum wall (102), the rotary drum bottom (101) is communicated with a port of a sedimentation rotary drum wall (1102), a flange (3) is arranged at the opening end of the rotary drum (1), the outer edge of the flange (3) is matched with and fixedly connected with the opening end of the rotary drum wall (102), a flange center hole (301) is arranged along the central axis of the flange (3), a plurality of liquid outlet holes (103) are uniformly formed in the rotary drum wall (102), and at least one dry material outlet (104) is formed in the position, close to the opening end, of the rotary drum wall (102); a barrel-shaped screen (4) which is correspondingly matched with the drum wall (102) is arranged along the inner side of the rotary drum (1), a spiral conveyor (5) is arranged in the screen (4), and the spiral conveyor (5) comprises a conveying shaft (501) in the middle and spiral blades (502) arranged on the conveying shaft (501); a sedimentation conveyor (12) is arranged in the sedimentation rotary drum (11), the sedimentation conveyor (12) comprises a sedimentation shaft (1201) and sedimentation spiral blades (1202) arranged on the outer wall of the sedimentation shaft (1201), one end of the sedimentation shaft (1201) penetrates through the conveying shaft (501) to be rotatably connected with the flange (3), one end of the sedimentation shaft (1201) is fixedly connected with the conveying shaft (501), the other end of the sedimentation shaft (1201) is connected with one end of the central rotating shaft (6), and the other end of the central rotating shaft (6) penetrates through the hollow rotating shaft (2) to be connected with the power transmission device; the end that stretches out of settlement axle (1201) that is located settlement rotary drum (11) is hollow tubular structure, has seted up a plurality of settlement mother liquor export (1203) on settlement axle (1201) wall, and in mother liquor inlet pipe (7) passed flange centre bore (301) and stretched into the hollow tube of settling axle (1201), has seted up pay-off export (504) on carrying axle (501), its characterized in that: the outer side of the barrel-shaped screen (4) is provided with a rigid screen cage (8) which is matched with the rigid screen (4) and fixedly connected with the rigid screen cage, the rigid screen cage (8) is made of rigid materials, the screen (4) is arranged on the wall of the inner side of the rotary drum wall (102) in a sliding mode through the rigid screen cage (8), the side wall of the screen cage (8) corresponding to the dry material outlet (104) of the rotary drum (1) is provided with a corresponding screen cage discharge hole (801), the side wall of the screen cage (8) corresponding to the liquid outlet hole (103) is provided with a corresponding liquid discharge hole, the top end of the screen cage (8) is provided with a connecting piece (802), an ultrasonic vibrator (302) is arranged in a flange (3) on the outer side of the mother liquid feed pipe (7), the ultrasonic vibrator (9) is composed of a cylindrical amplitude-changing rod (901) and at least two ultrasonic transducers (902) which are symmetrically distributed, and the ultrasonic vibrator (302) comprises a cylindrical hollow amplitude-changing rod cavity (3021) which is symmetrically distributed The ultrasonic vibration sieve comprises an ultrasonic transducer cavity (3022) which is arranged, wherein the central axis of the amplitude transformer cavity (3021) is coaxial with the central axis of a flange (3), an amplitude transformer (901) of an ultrasonic vibrator (9) is arranged in the amplitude transformer cavity (3021) in a sliding manner, a plurality of ultrasonic transducers (902) are symmetrically arranged in the ultrasonic transducer cavity (3022), the amplitude transformer (901) is fixedly connected with a connecting piece (802) at the top end of a sieve cage (8), and the ultrasonic transducers (902) are respectively connected with an ultrasonic generator (10) through conductive components.

3. A centrifugal filter device of a horizontal centrifuge comprises a rotary drum (1) which is horizontally arranged, wherein the rotary drum (1) is formed by enclosing a circular rotary drum bottom (101) and a composite rotary drum wall (105), the composite rotary drum wall (105) is composed of a sedimentation wall (1051) for sedimentation and a barrel-shaped rotary drum wall (102) for filtration, the rotary drum (1) is connected with one end of a hollow rotary shaft (2) which is horizontally arranged through the rotary drum bottom (101), a plurality of rotary drum bottom liquid outlets (1011) are formed in the rotary drum bottom (101), the other end of the hollow rotary shaft (2) is connected with a power transmission device, a flange (3) is arranged at the opening end of the rotary drum (1), the outer edge of the flange (3) is matched and fixedly connected with the opening end of the rotary drum (1), a flange center hole (301) is formed along the central axis of the flange (3), a plurality of liquid outlet holes (103) are uniformly formed in the rotary drum wall, at least one dry material outlet (104) is arranged on the position, close to the opening end, of the rotary drum wall (102); be provided with along the inboard of changeing drum wall (102) and correspond barrel screen cloth (4) of complex each other with changeing drum wall (102), be provided with auger delivery ware (5) in rotary drum (1), auger delivery ware (5) include transport axle (501) at middle part and spiral leaf (502) of setting on transport axle (501), the one end of transport axle (501) rotates with the inner wall of flange (3) to be connected, the other end of transport axle (501) is connected with the one end of central pivot (6), the other end of central pivot (6) passes cavity pivot (2) and is connected with power transmission, the transport axle (501) that are located rotary drum (1) stretch out the end and are hollow tubular structure, mother liquor export (503) have been seted up on transport axle (501), mother liquor inlet pipe (7) pass flange centre bore (301) and stretch into in the cavity pipe of transport axle (501), its characterized in that: the outer side of the barrel-shaped screen (4) is provided with a rigid screen cage (8) which is matched with and fixedly connected with the outer side of the barrel-shaped screen (4), the rigid screen cage (8) is made of rigid materials, the screen (4) is arranged on the wall on the inner side of the rotary drum wall (102) in a sliding mode through the rigid screen cage (8), the side wall of the screen cage (8) corresponding to the dry material outlet (104) of the rotary drum wall (102) is provided with a corresponding screen cage discharge port (801), the side wall of the screen cage (8) corresponding to the liquid outlet hole (103) is provided with a corresponding liquid outlet hole, the top end of the screen cage (8) is provided with a connecting piece (802), an ultrasonic vibrator (302) is arranged in a flange (3) on the outer side of the mother liquid feed pipe (7), the ultrasonic vibrator (9) is composed of a columnar amplitude-changing rod (901) and at least two ultrasonic transducers (902) which are symmetrically distributed, and the ultrasonic vibrator (302) comprises a columnar hollow amplitude-changing rod cavity (3021) which is symmetrically The ultrasonic vibration sieve comprises distributed ultrasonic transducer cavities (3022), wherein the central axis of each amplitude transformer cavity (3021) is coaxial with the central axis of a flange (3), an amplitude transformer (901) of an ultrasonic vibrator (9) is arranged in the amplitude transformer cavity (3021) in a sliding manner, a plurality of ultrasonic transducers (902) are symmetrically arranged in the ultrasonic transducer cavities (3022), the amplitude transformer (901) is fixedly connected with a connecting piece (802) at the top end of a sieve cage (8), and the ultrasonic transducers (902) are respectively connected with an ultrasonic generator (10) through conductive components.

4. The centrifugal filter device of a horizontal centrifuge according to any one of claims 1 to 3, wherein: the conductive component comprises: one end of each first lead (13) is connected with the ultrasonic transducer (902), the other end of each first lead (13) is connected with the corresponding conductive slip ring (14), a plurality of electric brushes (16) which are arranged in the centrifuge shell (15) and correspondingly contact with the conductive slip rings (14), a plurality of second leads (17) with one ends connected with the electric brushes (16) respectively, and the other ends of the second leads (17) are connected with the ultrasonic generator (10).

5. The centrifugal filter device of a horizontal centrifuge according to any one of claims 1 to 3, wherein: the power transmission device connected with the hollow rotating shaft (2) and the central rotating shaft (6) is a differential transmission device (18).

6. The centrifugal filter device of a horizontal centrifuge according to any one of claims 1 to 3, wherein: the amplitude transformer (901) of the ultrasonic vibrator (9) is of an annular structure.

7. The centrifugal filter device of a horizontal centrifuge according to any one of claims 1 to 3, wherein: the screen cage (8) comprises a plurality of ribs (803), and the ribs (803) are fixedly connected to the outer wall of the screen (4) through spot welding.

8. The centrifugal filter device of a horizontal centrifuge according to any one of claims 1 to 3, wherein: the screen cage (8) comprises a barrel-shaped thin plate (804) uniformly distributed with a plurality of small holes, and the thin plate (804) is fixedly connected to the outer wall of the screen (4) through spot welding.