Sealing structure between settling section and filtering section in settling and filtering centrifugal machine

Abstract

The utility model discloses a sealing structure between a settling section and a filtering section in a settling and filtering centrifugal machine, which comprises a machine base and an outer drum transmission shaft movably arranged on the machine base, the outer drum transmission shaft is of a hollow structure, an inner transmission shaft is movably arranged in the outer drum transmission shaft, and a settling drum is arranged in the settling section. The settling drum comprises a settling straight barrel section of which one end is arranged on a transmission shaft of the outer drum, and the other end of the settling straight barrel section is connected with a settling conical barrel section of which the diameter is reduced from large to small; a filtering helix and a filtering rotary drum are arranged in the filtering section, the settling conical barrel section is sleeved with the filtering helix, the filtering helix is sleeved with the filtering rotary drum, the filtering helix is connected with the inner transmission shaft, and the filtering rotary drum is connected with the settling rotary drum; a discharge port is formed in the downstream end of the settling conical barrel section of the settling rotary drum, a feed port is formed in the filtering screw, and a material pushing screw blade for sealing is arranged on the upstream side of the discharge port of the settling conical barrel section. The sealing structure is not aged and does not need to be replaced after being used for a long time.

Description

Technical Field

[0001] The utility model relates to a sedimentation filtering centrifuge, in particular to a sealing structure between a sedimentation section and a filtering section in the sedimentation filtering centrifuge. Background Art

[0002] At present, the sealing structure between the sedimentation section and the filtering section in the traditional sedimentation filtering centrifuge includes a machine base and an outer drum transmission shaft movably arranged on the machine base, the outer drum transmission shaft is a hollow structure, in which an inner transmission shaft is movably arranged, a sedimentation drum is arranged in the sedimentation section, and the sedimentation drum includes: a sedimentation straight cylinder section with a sedimentation drum end cover at one end, the sedimentation drum end cover is connected to the outer drum transmission shaft, and the other end of the sedimentation straight cylinder section is connected to a sedimentation cone cylinder section with a diameter changing from large to small; a filtering spiral in which the sedimentation cone cylinder section is sleeved, and a filtering drum in which the filtering spiral is sleeved, the filtering spiral is connected to the inner transmission shaft, and the filtering drum is connected to the sedimentation drum; the sedimentation drum is provided with a discharge port at the downstream end of its sedimentation cone cylinder section, the filtering spiral is provided with a feed port corresponding to the discharge port, and the sedimentation cone cylinder section of the sedimentation drum is provided with a sealing ring on the upstream side of its discharge port. As we all know, the sealing ring is a wearing part. If it is not replaced in time after aging, it will leak and affect the normal operation of the sedimentation filter centrifuge. Utility Model Content

[0003] A technical problem to be solved by the utility model is to provide a sealing structure between a sedimentation section and a filtering section in a sedimentation filtering centrifuge which will not age.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a sealing structure between the sedimentation section and the filtration section in a sedimentation filtration centrifuge, comprising: a machine base and an outer drum transmission shaft movably arranged on the machine base, the outer drum transmission shaft is a hollow structure, in which an inner transmission shaft is movably arranged, a sedimentation drum is arranged in the sedimentation section, and the sedimentation drum comprises: a sedimentation straight cylinder section with a sedimentation drum end cover at one end, the sedimentation drum end cover is connected to the outer drum transmission shaft; the other end of the sedimentation straight cylinder section is connected to a A sedimentation cone section that changes from large to small; the filtering section is provided with a filtering spiral in which the sedimentation cone section of the sedimentation drum is sleeved, and a filtering drum in which the filtering spiral is sleeved, the filtering spiral is connected to the inner transmission shaft, and the filtering drum is connected to the sedimentation drum; the sedimentation drum is provided with a discharge port at the downstream end of its sedimentation cone section, the filtering spiral is provided with a feed port corresponding to the discharge port, and the sedimentation cone section of the sedimentation drum is provided with a sealing pushing spiral blade on the upstream side of its discharge port.

[0005] As a preferred embodiment, in the sealing structure between the sedimentation section and the filtration section in the sedimentation filtration centrifuge, the sealing pushing spiral blade is close to the discharge port of the sedimentation cone section of the sedimentation drum.

[0006] As a preferred solution, in the sealing structure between the sedimentation section and the filtration section in the sedimentation filtration centrifuge, a sedimentation spiral is provided in the sedimentation drum, and the filtration spiral is connected to the inner transmission shaft through the sedimentation spiral.

[0007] As a preferred solution, in the sealing structure between the sedimentation section and the filtration section in the sedimentation filtration centrifuge, the outer drum transmission shaft and the sedimentation drum end cover are an integrated structure to form an outer drum flange shaft.

[0008] The beneficial effect of the utility model is that the utility model arranges a sealing pushing spiral blade on the settling cone section of the settling drum, so that during use, the material coming out of the discharge port of the settling cone section and entering the sealing pushing spiral blade can be pushed toward the discharge port of the settling cone section of the settling drum, thereby forming a seal between the filter spiral and the settling cone section of the settling drum, and the sealing pushing spiral blade will not age and can be used for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic cross-sectional structure diagram of the sedimentation filtering centrifuge of the utility model.

[0010] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A.

[0011] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part B.

[0012] Figure 4 It is a schematic diagram of the three-dimensional structure of the filter spiral.

[0013] Figures 1 to 4 The reference numerals in the drawings are: 1, base, 2, differential, 3, inner transmission shaft, 5, sedimentation drum, 50, drum end cover, 501, outer drum transmission shaft, 51, sedimentation straight cylinder section, 52, sedimentation conical cylinder section, 521, feed port, 522, sealing pushing spiral blade, 6, sedimentation spiral, 7, filtering spiral, 701, feed port, 8, filtering drum. DETAILED DESCRIPTION

[0014] The specific implementation scheme of the sealing structure between the sedimentation section and the filtration section in the sedimentation filtration centrifuge of the utility model is described in detail below in conjunction with the accompanying drawings.

[0015] like Figure 1 and Figure 2 As shown, the sealing structure between the sedimentation section and the filtering section in a sedimentation filtering centrifuge described in the utility model comprises: a machine base 1, and an outer drum transmission shaft 501 movably arranged on the machine base 1, the outer drum transmission shaft 501 is a hollow structure, in which an inner transmission shaft 3 is movably arranged, a sedimentation drum 5 is arranged in the sedimentation section, a sedimentation spiral 6 is arranged in the sedimentation drum 5, and the sedimentation spiral 6 is connected to the inner transmission shaft 3; the sedimentation drum 5 comprises: a sedimentation straight cylinder section 51 with a sedimentation drum end cover 50 arranged at one end, the sedimentation drum end cover 50 is connected to the outer drum transmission shaft 501 (in this embodiment, the sedimentation drum end cover 50 and the outer drum transmission shaft 501 are an integrated structure to form an outer drum flange shaft); the other end of the sedimentation straight cylinder section 51 is connected to a sedimentation conical cylinder section 52 with a diameter changing from large to small; the filtering section is provided with a filtering spiral 7 (see Figure 4 As shown) and a filter drum 8 in which a filter spiral 7 is sleeved, the filter spiral 7 is connected to the sedimentation spiral 6 (the specific connection structure belongs to the conventional technology in this field and is not described in detail here), and the filter drum 8 is connected to the sedimentation drum 5 (the specific connection structure belongs to the conventional technology in this field and is not described in detail here); the sedimentation drum 5 is provided with a discharge port 521 at the downstream end of its sedimentation cone section 52, and the filter spiral 7 is provided with a feed port 701 corresponding to the discharge port 521 on the sedimentation cone section 52 of the sedimentation drum 5, and the sedimentation cone section 52 of the sedimentation drum 5 is provided with a sealing push spiral blade 522 on the upstream side of its discharge port 521 and close to the discharge port 521 of the sedimentation cone section 52 of the sedimentation drum 5 (see Figure 3 shown).

[0016] In actual use, the inner transmission shaft 3 and the outer drum transmission shaft 501 are connected to the differential 2, so that the rotation of the filtering screw 7 and the settling drum 5 produces a speed difference, pushing the material entering the sealing pushing spiral blade 522 toward the discharge port 521 of the settling cone section 52, thereby forming a seal between the filtering screw 7 and the settling cone section 52 of the settling drum 5.

[0017] In summary, the above are only preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. All equivalent changes and modifications made to the shape, structure, characteristics and spirit described in the scope of the claims of the present utility model should be included in the protection of the claims of the present utility model.

Claims

1. A sealing structure between a sedimentation section and a filtration section in a sedimentation filtration centrifuge, comprising: A machine base and an outer drum transmission shaft movably arranged on the machine base, the outer drum transmission shaft is a hollow structure, in which an inner transmission shaft is movably arranged, a sedimentation drum is arranged in the sedimentation section, and the sedimentation drum comprises: a sedimentation straight cylinder section with a sedimentation drum end cover at one end, the sedimentation drum end cover is connected to the outer drum transmission shaft; the other end of the sedimentation straight cylinder section is connected to a sedimentation conical cylinder section with a diameter changing from large to small; a filtering spiral in which the sedimentation conical cylinder section of the sedimentation drum is sleeved, and a filtering drum in which the filtering spiral is sleeved, the filtering spiral is connected to the inner transmission shaft, and the filtering drum is connected to the sedimentation drum; the sedimentation drum is provided with a discharge port at the downstream end of its sedimentation conical cylinder section, and the filtering spiral is provided with a feed port corresponding to the discharge port, and it is characterized in that the sedimentation conical cylinder section of the sedimentation drum is provided with a sealing pushing spiral blade on the upstream side of its discharge port.

2. The sealing structure between the sedimentation section and the filtration section in a sedimentation filtration centrifuge according to claim 1, characterized in that: The sealing pushing spiral blade is close to the discharge port of the settling cone section of the settling drum.

3. The sealing structure between the sedimentation section and the filtration section in a sedimentation filtration centrifuge according to claim 1, characterized in that: The sedimentation drum is provided with a sedimentation spiral, and the filtering spiral is connected to the inner transmission shaft through the sedimentation spiral.

4. A sealing structure between the sedimentation section and the filtration section in a sedimentation filtration centrifuge according to any one of claims 1 to 3, characterized in that: The outer drum transmission shaft and the sedimentation drum end cover are an integrated structure to form an outer drum flange shaft.

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