Rotary drum device for horizontal spiral filtering centrifugal machine

Abstract

The invention relates to the technical field of horizontal spiral filtering centrifugal machines, and provides a rotary drum device for a horizontal spiral filtering centrifugal machine, the rotary drum device comprises a connecting ring, mounting grooves are formed in the two sides of the connecting ring, mounting plates are clamped in the two mounting grooves, and a rotary drum filtering part is fixedly connected to the end, away from the connecting ring, of the mounting plate on the other side; the connecting ring is arranged between the drum settling part and the drum filtering part, the assembling and disassembling assembly is arranged in the connecting ring, the assembling and disassembling assembly facilitates assembling and disassembling between the drum settling part and the connecting ring and between the drum filtering part and the connecting ring by workers, the filtering assembly is arranged in the drum filtering part, the filtering assembly can conduct multi-stage filtering on materials in the drum filtering part, and the filtering effect is improved. Under the combined action of the connecting ring, the mounting groove, the mounting plate, the drum settling part and the drum filter plate, the integral outer drum can be integrally designed in a split manner, so that the maintenance or cleaning efficiency can be improved, and the maintenance and replacement cost can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of horizontal spiral filtering centrifuges, in particular to a drum device used for horizontal spiral filtering centrifuges. Background Art

[0002] Horizontal spiral filter centrifuge is a kind of equipment commonly used to separate solid-liquid mixtures. It is particularly suitable for processing materials with high viscosity or occasions that require fine separation. Its working principle is to use the centrifugal force of high-speed rotation to separate solid particles from liquid. It combines centrifugal force and spiral propulsion force. Through centrifugal separation and filtration functions, it can achieve the effect of efficient separation of solids and liquids.

[0003] The drum device of the horizontal spiral filter centrifuge is one of its core components and plays an important role. The drum bears the centrifugal force in the entire separation process and is the key to the solid-liquid separation process. The design and operation of the drum directly affects the separation efficiency, processing capacity and stability of the equipment.

[0004] At present, one end of the common horizontal spiral filtering centrifuge drum device is used for sedimentation and classification of materials, and the other end is used for filtering and classification of the settled materials. However, since the drum of the horizontal spiral filtering centrifuge is usually an integrated design, when there is a problem with the sedimentation part or the filtration part and it needs to be replaced or maintained, the entire drum needs to be disassembled and replaced or maintained, and a single part cannot be disassembled and replaced. This makes the replacement and maintenance cost of the drum of the horizontal spiral filtering centrifuge high during use and the cleaning and maintenance efficiency low. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a drum device for a horizontal spiral filtering centrifuge, which solves the problem that when a part of the drum needs maintenance or replacement, a single part cannot be disassembled and replaced.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A drum device for a horizontal spiral filtering centrifuge, comprising a connecting ring, both sides of the connecting ring are provided with mounting grooves, both mounting grooves are clamped with mounting plates, one end of the mounting plate away from the connecting ring is fixedly connected to a drum settling part, and the other end of the mounting plate away from the connecting ring is fixedly connected to a drum filtering part;

[0007] An assembly and disassembly component, which is arranged in the connecting ring, and the assembly and disassembly component facilitates the staff to assemble and disassemble the drum settling part and the drum filtering part and the connecting ring;

[0008] The filter assembly is arranged in the drum filter part, and the filter assembly can perform multi-stage filtration on the material in the drum filter part to improve the filtering effect.

[0009] Preferably, the assembly and disassembly component includes a knob, which is rotatably connected to the outer wall of a connecting ring, a chamber is opened inside the connecting ring, the output end of the knob passes through the chamber and is fixedly connected to a worm, a worm wheel is meshed on the front side of the worm, and transmission gears are fixedly connected on both sides of the worm wheel, two transmission gears are meshed with transmission gear rings on their outer peripheries, two transmission gear rings are fixedly connected with bevel gear rings on the sides away from each other, and two bevel gear rings are meshed with multiple bevel gears on the sides away from each other, multiple bevel gears are fixedly connected to threaded rods at the inner ends of the multiple threaded rods, multiple threaded plates are threadedly connected to the outer peripheries of the multiple movable plates, and multiple mounting rods are fixedly connected to the inner sides, and multiple mounting rods pass through the mounting plate.

[0010] Preferably, the filter assembly includes a plurality of filter holes 1, and the plurality of filter holes 1 are all opened on the outer periphery of the drum filter part. A spiral plate is fixedly connected to the inner wall of the drum filter part, and a filter inner cover is arranged on the inner side of the spiral plate. A plurality of filter holes 2 are opened on the outer periphery of the filter inner cover.

[0011] Preferably, the filter inner cover is fixedly connected with a threaded ring 2 at one end close to the drum settling portion, the inner wall of the threaded ring 2 is threadedly connected with a threaded ring 1, and the threaded ring 1 is fixedly connected to the inner wall of the drum filter portion.

[0012] Preferably, a plurality of overflow grooves are provided on the outer periphery of the middle part of the rotary drum settling portion away from the connecting ring end, and a through hole is provided on the rotary drum settling portion away from the middle part of the connecting ring end.

[0013] Preferably, a sedimentation spiral portion is provided inside the drum sedimentation portion, and a filtering spiral portion is fixedly connected to one end of the sedimentation spiral portion close to the drum filtering portion, and a plurality of discharge holes are opened on the inner wall of the sedimentation spiral portion.

[0014] Preferably, the sedimentation spiral portion is connected to a feed pipe, and the feed pipe passes through the filtering spiral portion.

[0015] Preferably, support plates are fixedly connected to both sides of the inner wall of the chamber, and both ends of the worm wheel pass through the support plates and are connected to the transmission gear.

[0016] Preferably, the plurality of bevel gears and the outer wall of the transmission gear ring are rotatably connected to the outer wall inside the chamber.

[0017] Preferably, the front and rear parts of the plurality of movable plates are penetrated by inner limit rods, and the upper and lower ends of the plurality of limit rods are fixedly connected to the inner wall of the chamber.

[0018] Working principle: In actual use, when the material is transported to the inside of the drum filter part 3, as the drum rotates, the settled material can be filtered through the filter hole 27 on the filter inner cover 13, so that the liquid material will pass through the filter hole 27 and enter between the drum filter part 3 and the filter inner cover 13, but some smaller fixed materials will also pass through the filter hole 27 with the liquid material under the action of centrifugal force. At this time, the material filtered through the filter hole 27 can be further filtered through the filter hole 15 set on the drum filter part 3, thereby improving the filtering effect, and the solid material filtered out by the filter hole 15 will be pushed out of the drum filter part 3 under the action of the spiral plate 12, and when the drum needs to be cleaned. When the worm gear 15 is in operation or needs maintenance and replacement, the worm 30 can be driven to rotate by turning the knob 4. When the worm gear 15 rotates, the connected transmission gear 17 is driven to rotate and the meshing transmission gear ring 18 and the bevel gear ring 19 connected to the transmission gear ring 18 are driven to rotate. The bevel gear ring 19 can drive the meshing multiple bevel gears 20 to rotate at the same time. When the multiple bevel gears 20 rotate at the same time, the multiple threaded rods 21 can be driven to rotate. When the multiple threaded rods 21 rotate at the same time, the movable plate 22 and the mounting rod 24 fixed on the movable plate 22 can be driven to move. When the mounting rod 24 is pulled out from the mounting plate 10, the drum sedimentation part 2 and the drum filtering part 3 can be disassembled, replaced or cleaned from the connecting ring 1.

[0019] The present invention provides a drum device for a horizontal spiral filtering centrifuge. It has the following beneficial effects:

[0020] 1. The present invention can realize a split design of the integrated outer drum as a whole through the joint action of the connecting ring, the mounting groove, the mounting plate, the drum settling part and the drum filter plate. When a problem occurs in the settling part or the filtering part of the drum and maintenance or cleaning is required, the part can be disassembled and replaced separately, thereby improving the maintenance or cleaning efficiency and reducing the maintenance and replacement costs.

[0021] 2. In the present invention, through the joint action of the knob, worm, worm wheel, transmission gear, transmission gear ring, bevel gear ring, bevel gear, threaded rod, movable plate, mounting rod, mounting plate and mounting groove, the staff can limit or cancel the limit of the drum sedimentation part and the drum filter plate by turning the knob, thereby facilitating the staff to assemble and disassemble it.

[0022] 3. The present invention performs multi-stage filtration on the material to be filtered after sedimentation through the joint action of the drum filter part, the filter inner cover, the second filter hole, the first filter hole and the spiral plate, thereby improving the filtering effect of the filter part on the material and the classification effect of the solid and liquid materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic cross-sectional structure diagram of the connecting ring in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the assembly and disassembly components in the present invention;

[0027] Figure 5 It is a schematic diagram of the connection structure of the worm gear in the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the rotary drum settling part of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the rotary drum filter part in the present invention.

[0030] Among them, 1. connecting ring; 2. drum sedimentation part; 3. drum filter part; 4. knob; 5. filter hole one; 6. through hole; 7. feed pipe; 8. overflow groove; 9. sedimentation spiral part; 10. mounting plate; 11. mounting groove; 12. spiral plate; 13. filter inner cover; 14. threaded ring one; 15. worm gear; 16. support plate; 17. transmission gear; 18. transmission gear ring; 19. bevel gear ring; 20. bevel gear; 21. threaded rod; 22. moving plate; 23. limit rod; 24. mounting rod; 25. discharge hole; 26. filter spiral part; 27. filter hole two; 28. chamber; 29. ​​threaded ring two; 30. worm. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Please refer to the attached Figure 1 -Attached Figure 7 The embodiment of the present invention provides a drum device for a horizontal spiral filtering centrifuge, including a connecting ring 1, both sides of the connecting ring 1 are provided with mounting grooves 11, both mounting grooves 11 are clamped with mounting plates 10, one side of the mounting plate 10 is fixedly connected to the end of the drum settling part 2 away from the connecting ring 1, and the other side of the mounting plate 10 is fixedly connected to the end of the drum filter part 3 away from the connecting ring 1, and an assembly and disassembly component is arranged in the connecting ring 1, and the assembly and disassembly component is convenient for the staff to assemble and disassemble the drum settling part 2 and the drum filter part 3 with the connecting ring 1;

[0033] The assembly and disassembly component includes a knob 4, which is rotatably connected to the outer wall of the connecting ring 1. A chamber 28 is opened inside the connecting ring 1. The output end of the knob 4 passes through the chamber 28 and is fixedly connected to a worm 30. A worm wheel 15 is meshed on the front side of the worm 30. Transmission gears 17 are fixedly connected on both sides of the worm wheel 15. Transmission gear rings 18 are meshed on the outer peripheries of the two transmission gears 17. Bevel gear rings 19 are fixedly connected to the distant sides of the two transmission gear rings 18. Multiple bevel gears 20 are meshed on the distant sides of the two bevel gear rings 19. Threaded rods 21 are fixedly connected to the inner ends of the multiple bevel gears 20. Moving plates 22 are threadedly connected to the outer peripheries of the multiple threaded rods 21. Mounting rods 24 are fixedly connected to the inner sides of the multiple moving plates 22. The multiple mounting rods 24 are all hollow rods. The multiple mounting rods 24 are slidably connected to the outer peripheries of the threaded rods 21. The multiple mounting rods 24 pass through the mounting plate 10.

[0034] By rotating the knob 4, the connected worm 30 can be driven to rotate. When the worm 30 rotates, the meshing worm wheel 15 will be driven to rotate. When the worm wheel 15 rotates, the transmission gears 17 connected on both sides will be driven to rotate. Through the transmission gear 17, the meshing transmission gear ring 18 can be driven to rotate respectively. When the transmission gear ring 18 rotates, the corresponding connected bevel gear ring 19 will be driven to rotate. Through the bevel gear ring 19, the corresponding meshing multiple bevel gears 20 can be driven to rotate at the same time. When multiple bevel gears 20 rotate at the same time, multiple threaded rods 21 can be driven to rotate. When multiple threaded rods 21 rotate at the same time, the movable plate 22 can be driven to move along the threaded rod 21. When multiple movable plates 22 move at the same time, the mounting rod 24 fixed on the movable plate 22 can be driven to move.

[0035] Therefore, when the staff is splicing and installing the drum, the staff can first turn the knob 4 to drive the multiple installation rods 24 to retract into the chamber 28, and then the staff can insert the installation plates 10 connected to the drum sedimentation part 2 and the drum filter part 3 into the installation grooves 11 on the connecting ring 1 respectively, and then turn the knob 4 in the opposite direction to drive the multiple installation rods 24 to extend out from the chamber 28 and insert into the installation plates 10 in the installation grooves 11, so that the installation plates 10 can be limited and the drum sedimentation part 2 and the drum filter part 3 can be fixed respectively. Under the action of the worm gear 15 and the worm 30, the centrifugal force generated when the drum rotates can be prevented from affecting the installation rods 24. When the staff needs to adjust the drum sedimentation part 2 or the drum filter part 3 is to be disassembled, the staff only needs to turn the knob 4 again to make the mounting rod 24 withdrawn from the mounting plate 10 and then withdraw the mounting plate 10 from the mounting groove 11 to realize the disassembly of the drum settling part 2 and the drum filter part 3, so as to achieve a split design of the drum, and divide the drum as a whole into the drum settling part 2, the drum filter part 3 and the connecting ring 1, and at the same time, it is convenient for the staff to assemble and disassemble the drum settling part 2 and the drum filter part 3 and the connecting ring 1, so that when the settling part or the filtering part of the drum has problems and needs maintenance or cleaning, the part can be disassembled and replaced separately, so as to achieve the effect of improving the maintenance or cleaning efficiency and reducing the repair and replacement cost.

[0036] Please refer to the attached Figure 1 , Attachment Figure 2 and attached Figure 7 , a filter assembly, the filter assembly is arranged in the drum filter part 3, and the filter assembly can perform multi-stage filtration on the material in the drum filter part 3 to improve the filtration effect;

[0037] The filter assembly includes a plurality of filter holes 5, and the plurality of filter holes 5 are all arranged on the outer periphery of the drum filter portion 3. A spiral plate 12 is fixedly connected to the inner wall of the drum filter portion 3. A filter inner cover 13 is arranged on the inner side of the spiral plate 12. The outer side and the inner side of the spiral plate 12 are in contact with the drum filter portion 3 and the filter inner cover 13 respectively. A plurality of filter holes 27 are arranged on the outer periphery of the filter inner cover 13, and the positions of the plurality of filter holes 27 and the filter holes 5 are staggered with each other.

[0038] Through the filter hole 27 on the filter inner cover 13, when the material is settled, the settled solid material is transported to the inside of the drum filter part 3. As the drum rotates, the settled material moved into the drum filter part 3 can be filtered, so that the liquid material will pass through the filter hole 27 and enter between the drum filter part 3 and the filter inner cover 13. At the same time, some smaller fixed materials will also pass through the filter hole 27 with the liquid material under the action of centrifugal force and be between the drum filter part 3 and the filter inner cover 13. At this time, the material filtered through the filter hole 27 can be further filtered through the filter hole 15 set on the drum filter part 3, thereby improving the filtering effect, wherein the liquid material will continue to pass through the filter hole 15 on the drum filter part 3, and the solid material filtered out by the filter hole 15 will remain between the drum filter part 3 and the filter inner cover 13, and will be pushed out of the drum filter part 3 under the action of the spiral plate 12, so that the solid and liquid materials can be fully classified and the classification effect is improved.

[0039] Please refer to the attached Figure 2 The filter inner cover 13 is fixedly connected with a threaded ring 29 at one end close to the drum sedimentation part 2, and the inner wall of the threaded ring 29 is threadedly connected with a threaded ring 14, and the threaded ring 14 is fixedly connected to the inner wall of the drum filter part 3.

[0040] By providing the threaded ring 14 and the threaded ring 29, when the filter inner cover 13 is damaged or the filter hole 27 on the filter inner cover 13 is clogged, and the staff needs to clean or replace the filter inner cover 13, the staff can rotate the filter inner cover 13. When the filter inner cover 13 rotates, the connected threaded ring 29 will be driven to rotate. Since the threaded ring 29 is connected to the threaded ring 14 through threads, as the threaded ring 29 rotates, the threaded ring 29 will move along the threaded ring 14 and drive the connected filter inner cover 13 to move, thereby facilitating the staff to disassemble or install the filter inner cover 13.

[0041] Please refer to the attached Figure 1 A plurality of overflow grooves 8 are provided at the periphery of the middle part of the end of the drum settling part 2 away from the connecting ring 1 , and a through hole 6 is provided at the middle part of the end of the drum settling part 2 away from the connecting ring 1 .

[0042] By providing a through hole 6, the output end of the differential motor can pass through the through hole 6 and connect with the spiral part inside the drum. By providing an overflow groove 8, the liquid material in the settling part 2 of the drum can be discharged through the overflow groove 8 after preliminary sedimentation.

[0043] Please refer to the attached Figure 2 A sedimentation spiral portion 9 is arranged inside the drum sedimentation portion 2, and a filtering spiral portion 26 is fixedly connected to one end of the sedimentation spiral portion 9 close to the drum filtering portion 3, and a plurality of discharge holes 25 are opened on the inner wall of the sedimentation spiral portion 9.

[0044] By providing a discharge hole 25, the material entering the sedimentation spiral part 9 can be thrown out. Under the action of centrifugal force, the solid and liquid materials can be thrown into the drum sedimentation part 2 through the discharge hole 25 and sedimented and classified. The solid materials after sedimentation and classification will be pushed into the drum filter part 3 under the action of the outer spiral part of the sedimentation spiral part 9, and under the action of the spiral part outside the drum filter part 3 and the filter spiral part 26, the settled materials can be further filtered and classified into solid and liquid materials.

[0045] Please refer to the attached Figure 1 and attached Figure 2 The sedimentation spiral part 9 is connected with a feed pipe 7 , and the feed pipe 7 passes through the filtering spiral part 26 .

[0046] By providing the feed pipe 7 , the staff can pour the materials to be classified into the feed pipe 7 , and the materials can enter the interior of the drum through the feed pipe 7 for solid-liquid separation.

[0047] Please refer to the attached Figure 5 Support plates 16 are fixedly connected to both sides of the inner wall of the chamber 28 , and both ends of the worm wheel 15 pass through the support plates 16 and are connected to the transmission gear 17 .

[0048] The support plate 16 can support the worm wheel 15 and the transmission gear 17 , thereby ensuring the stability of the rotation and transmission of the worm wheel 15 and the transmission gear 17 .

[0049] Please refer to the attached Figure 3 , Attachment Figure 4 and attached Figure 5 The outer wall of the multiple bevel gears 20 and the transmission gear ring 18 are rotatably connected to the outer wall inside the chamber 28.

[0050] By rotatably connecting the outer walls of the bevel gear 20 and the transmission gear ring 18 in the chamber 28, the bevel gear 20 and the transmission gear ring 18 can be limited, thereby ensuring the stability of the movement and transmission of the bevel gear 20 and the transmission gear ring 18.

[0051] Please refer to the attached Figure 3 , Attachment Figure 4 and attached Figure 5 The front and rear parts of the plurality of movable plates 22 are penetrated by limiting rods 23 , and the upper and lower ends of the plurality of limiting rods 23 are fixedly connected to the inner wall of the chamber 28 .

[0052] The limit rod 23 can be provided to limit the movable plate 22, thereby preventing the movable plate 22 from rotating, and then the movable plate 22 and the mounting rod 24 fixed on the movable plate 22 can be driven to move along the threaded rod 21 when the threaded rod 21 rotates.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drum device for a horizontal spiral filtering centrifuge, comprising a connecting ring (1), characterized in that: Both sides of the connecting ring (1) are provided with mounting grooves (11), and mounting plates (10) are engaged in the two mounting grooves (11); one end of the mounting plate (10) away from the connecting ring (1) is fixedly connected to the rotary drum settling part (2), and the other end of the mounting plate (10) away from the connecting ring (1) is fixedly connected to the rotary drum filtering part (3); An assembly and disassembly component, wherein the assembly and disassembly component is arranged in the connecting ring (1), and the assembly and disassembly component facilitates the staff to assemble and disassemble the rotary drum settling part (2) and the rotary drum filtering part (3) and the connecting ring (1); A filter assembly is arranged in a rotary drum filter portion (3), and the filter assembly can perform multi-stage filtration on the material in the rotary drum filter portion (3), thereby improving the filtration effect.

2. A drum device for a horizontal spiral filtering centrifuge according to claim 1, characterized in that: The assembly and disassembly component comprises a knob (4), the knob (4) being rotatably connected to the outer wall of a connecting ring (1), a chamber (28) being provided inside the connecting ring (1), an output end of the knob (4) passing through the chamber (28) and being fixedly connected to a worm (30), a worm wheel (15) being meshed at the front side of the worm (30), both sides of the worm wheel (15) being fixedly connected to transmission gears (17), the outer circumferences of the two transmission gears (17) being meshed with transmission gear rings (18), and the two transmission gears (17) being meshed with transmission gear rings (18). The sides away from each other of the transmission gear rings (18) are fixedly connected to bevel gear rings (19), the sides away from each other of the two bevel gear rings (19) are meshed with a plurality of bevel gears (20), the inner ends of the plurality of bevel gears (20) are fixedly connected to threaded rods (21), the outer circumferences of the plurality of threaded rods (21) are threadedly connected to movable plates (22), the inner sides of the plurality of movable plates (22) are fixedly connected to mounting rods (24), and the plurality of mounting rods (24) pass through the mounting plate (10).

3. A drum device for a horizontal spiral filtering centrifuge according to claim 1, characterized in that: The filter assembly comprises a plurality of filter holes (5), the plurality of filter holes (5) are all arranged on the outer periphery of a rotary drum filter portion (3), a spiral plate (12) is fixedly connected to the inner wall of the rotary drum filter portion (3), a filter inner cover (13) is arranged on the inner side of the spiral plate (12), and a plurality of filter holes (27) are arranged on the outer periphery of the filter inner cover (13).

4. A drum device for a horizontal spiral filtering centrifuge according to claim 3, characterized in that: The filtering inner cover (13) is fixedly connected to one end of the drum sedimentation portion (2) with a second threaded ring (29), the inner wall of the second threaded ring (29) is threadedly connected to a first threaded ring (14), and the first threaded ring (14) is fixedly connected to the inner wall of the drum filtering portion (3).

5. The drum device for a horizontal spiral filtering centrifuge according to claim 1, characterized in that: A plurality of overflow grooves (8) are provided on the periphery of the middle portion of the end of the rotary drum settling portion (2) away from the connecting ring (1), and a through hole (6) is provided on the middle portion of the end of the rotary drum settling portion (2) away from the connecting ring (1).

6. A drum device for a horizontal spiral filtering centrifuge according to claim 1, characterized in that: A sedimentation spiral portion (9) is arranged inside the rotary drum sedimentation portion (2), and a filtering spiral portion (26) is fixedly connected to one end of the sedimentation spiral portion (9) close to the rotary drum filtering portion (3), and a plurality of discharge holes (25) are provided on the inner wall of the sedimentation spiral portion (9).

7. A drum device for a horizontal spiral filtering centrifuge according to claim 6, characterized in that: The sedimentation spiral part (9) is connected to a feed pipe (7), and the feed pipe (7) passes through the filtering spiral part (26).

8. A drum device for a horizontal spiral filtering centrifuge according to claim 2, characterized in that: Support plates (16) are fixedly connected to both sides of the inner wall of the chamber (28), and both ends of the worm wheel (15) pass through the support plates (16) and are connected to the transmission gear (17).

9. A drum device for a horizontal spiral filtering centrifuge according to claim 2, characterized in that: The outer walls of the plurality of bevel gears (20) and the transmission gear ring (18) are all rotatably connected to the outer side wall inside the chamber (28).

10. A drum device for a horizontal spiral filtering centrifuge according to claim 2, characterized in that: The front and rear parts of the plurality of movable plates (22) are penetrated by limiting rods (23), and the upper and lower ends of the plurality of limiting rods (23) are fixedly connected to the inner wall of the chamber (28).

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