CN210729869U

CN210729869U - Two-stage rotary drum device of material-pushing type centrifugal machine

Info

Publication number: CN210729869U
Application number: CN201921563396.5U
Authority: CN
Inventors: 王细枧; 王深波; 颜国良
Original assignee: Xiangtan Huibo Centrifuge Co ltd
Current assignee: Xiangtan Huibo Centrifuge Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-06-12
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a push away material formula centrifuge's second grade rotary drum device, it includes the second grade rotary drum, the activity is provided with the charging tray in the inner wall of second grade rotary drum, the activity is provided with the cloth mouth on the side circumference of charging tray, be provided with the centrifugal distributing device of first order rotary drum on the side circumference of cloth mouth, the centrifugal distributing device of first order rotary drum is the toper structure, the inboard of the centrifugal distributing device of first order rotary drum is provided with first order centrifugal surface net, the partial inner wall that the centrifugal distributing device of first order rotary drum is grown out to the second grade rotary drum is provided with the second grade screen cloth, the charging tray is provided with the charging sheet. The utility model provides a push away material formula centrifuge's second grade rotary drum device, design benefit uses and maintains conveniently, and material dehydration effect is good, can be applicable to low concentration suspension, long service life.

Description

Two-stage rotary drum device of material-pushing type centrifugal machine

Technical Field

The utility model relates to a rotary drum device specifically is a push away material formula centrifuge's second grade rotary drum device.

Background

Centrifuges are machines that utilize centrifugal force to separate components of a mixture of liquid and solid particles or liquid and liquid. The centrifuge is mainly used for separating solid particles from liquid in suspension, or separating two liquids which have different densities and are insoluble with each other in emulsion (for example, cream is separated from milk); it can also be used to remove liquids from wet solids, such as by spin drying clothes in a washing machine; the special overspeed tubular separator can also separate gas mixtures with different densities; some settling centrifuges can also grade solid particles according to density or granularity by utilizing the characteristic that solid particles with different densities or granularities have different settling speeds in liquid.

A rotary drum of the centrifugal machine is a main rotating component in the centrifugal machine, and the rotary drum is provided with a plurality of small holes for removing water from materials during rotation. Under the condition of high-speed operation, the slurry is continuously fed into the feeding pipe and flows onto the filter screen of the rotary drum along the inner wall of the feeding hopper. The filtrate passes through the filter screen and is continuously discharged through the filtrate outlet, and filter residue accumulated on the inner surface of the filter screen is pushed out along the inner wall surface of the rotary drum by the reciprocating piston pusher.

The drum device of the pusher centrifuge in the prior art has a narrow application range, and when the material process is changed or the feeding concentration is too low, the pusher centrifuge cannot be used for separation; most of the devices have simple structures, the material dehydration effect is not good enough, and the requirements of customers cannot be met; therefore, it is urgently needed to develop a drum device to solve the above problems.

Disclosure of Invention

The utility model aims at the above problem, the utility model provides a push away material formula centrifuge's second grade rotary drum device, design benefit uses and maintains the convenience, and material dehydration effect is good, can be applicable to low concentration suspension, long service life.

In order to realize the above purpose, the utility model adopts the technical scheme that: the material pushing device comprises a second-stage rotary drum, wherein a material pushing disc is movably arranged in the inner periphery of the second-stage rotary drum, a material distribution port is movably arranged on the circumference of the side end of the material pushing disc, a first-stage rotary drum centrifugal distributor is arranged on the circumference of the side end of the material distribution port, the first-stage rotary drum centrifugal distributor is of a conical structure, a first-stage centrifugal surface net is arranged on the inner side of the first-stage rotary drum centrifugal distributor, a second-stage screen is arranged on the inner wall of the part, extending out of the first-stage rotary drum centrifugal distributor, of the second-stage rotary.

Furthermore, a water retaining ring connected with the shaft and the bearing assembly is arranged at the side end of the second-stage rotary drum.

Furthermore, the second-stage rotary drum is connected with the material pushing disc through a push rod sealing pressing ring.

Furthermore, one end of the centrifugal distributing device is provided with a centrifugal net surface pressing ring, and the feeding pipe is inserted into the centrifugal net surface pressing ring.

Further, the second-stage rotary drum is in a straight cylinder shape, a rotary drum pressing ring is movably arranged at the side end of the second-stage rotary drum, and a scraper is movably arranged at the side end of the rotary drum pressing ring; a water retaining ring is arranged between the second-stage rotary drum and the rotary drum pressing ring.

Furthermore, one end of the second-stage rotary drum is in a straight cylinder shape, the end close to the feeding pipe is in a conical shape, and a second-stage rotary drum pressing ring is movably arranged at the side end of the second-stage rotary drum.

The utility model has the advantages that:

1. the utility model provides a push away material formula centrifuge, design benefit uses and maintains conveniently, and the unique design of rotary drum device at first forms the filter cake through at first order rotary drum centrifugation distributing device, then filters, dewaters through the second grade filter screen respectively, makes material dehydration effect good, can be applicable to low concentration suspension, long service life.

2. The centrifugal distributing device of the utility model is of a conical structure, the filter cake formed on the first-stage centrifugal surface net by the solid phase can be very thin, and the centrifugal distributing device can not block materials; the low-concentration suspension liquid can have thickening effect, and an effective filter cake can be formed in the next procedure.

3. In the utility model, one end of the second stage rotary drum is in a straight cylinder shape, the end close to the water inlet pipe is in a cone shape, the diameter of the third stage rotary drum is increasingly larger, the rotating speed is constant, the separation factor is increasingly larger due to the structural design, and the dewatering effect is better; the filter cake becomes thinner and thinner at the position with larger and larger diameter, water is easier to permeate, the dehydration effect is better, and the follow-up cost is reduced for enterprises.

Drawings

Fig. 1 is a front view of the structure of the present invention (the third stage drum is cylindrical).

Fig. 2 is a front view of the structure of the present invention (one end of the third stage drum is cylindrical, and the other end is conical).

The text labels in the figures are represented as: 1. a water retaining ring; 2. a second stage drum; 3. the push rod seals the pressing ring; 4. pushing the material tray; 5. a feed pipe; 6. pushing the material sheet; 7. centrifuging the net surface pressing ring; 8. a material distribution port; 9. a first-stage drum centrifugal distributor; 10. a second stage screen; 11. a scraper; 12. a first stage centrifugal veil; 13. a water retaining ring; 14. pressing a ring by a rotary drum; 15. and (5) secondary drum pressing rings.

Detailed Description

In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

As shown in fig. 1, the specific structure of the present invention is: the material pushing device comprises a second-stage rotary drum 2, a material pushing disc 4 is movably arranged in the inner periphery of the second-stage rotary drum 2, a material distribution port 8 is movably arranged on the circumference of the side end of the material pushing disc 4, a first-stage rotary drum centrifugal distributor 9 is arranged on the circumference of the side end of the material distribution port 8, the first-stage rotary drum centrifugal distributor 9 is of a conical structure, a first-stage centrifugal surface net 12 is arranged on the inner side of the first-stage rotary drum centrifugal distributor 9, a second-stage screen mesh 10 is arranged on the inner wall of the part, growing out of the first-stage rotary drum centrifugal distributor 9, of the second-stage rotary drum 2.

Preferably, the side end of the second stage drum 2 is provided with a water retaining ring 1 connected with a shaft and bearing assembly.

Preferably, the second-stage rotary drum 2 is connected with the pushing disc 4 through a push rod sealing pressing ring 3.

Preferably, one end of the first-stage drum centrifugal distributor 9 is provided with a centrifugal net surface pressing ring 7, and the feeding pipe 5 is inserted into the centrifugal net surface pressing ring 7.

Preferably, the secondary drum 2 is in a straight cylinder shape, a drum pressing ring 14 is movably arranged at the side end of the secondary drum 2, and a scraper 11 is movably arranged at the side end of the drum pressing ring 14; a water retaining ring 13 is arranged between the second-stage rotary drum 2 and the rotary drum pressing ring 14.

Preferably, one end of the second-stage rotary drum 2 is in a straight cylinder shape, the end close to the feeding pipe 5 is in a conical shape, and a second-stage rotary drum pressing ring 15 is movably arranged at the side end of the second-stage rotary drum 2; when the end of the secondary drum 2 close to the feeding water 5 is conical, the secondary drum pressing ring 17 is not provided with a scraper, the housing component is not provided with a material collecting groove, and a filter cake is pushed out of the drum in the material pushing process and is extruded to the shell and finally naturally falls off. The diameter of the second-stage rotary drum 2 is larger and larger, the rotating speed is constant, the separation factor is larger and larger due to the structural design, and the dewatering effect is better; the filter cake becomes thinner and thinner at the position with larger and larger diameter, water is easier to permeate, the dehydration effect is better, and the follow-up cost is reduced for enterprises.

The working principle is as follows: after the rotary drum component is rotated at full speed by a driving device, suspension liquid is added into a first-stage rotary drum centrifugal distributor 9 arranged on a material pushing plate 4 through a feeding pipe 5, the suspension liquid is uniformly distributed to a first-stage centrifugal surface net 12 under the action of centrifugal force, most of liquid is thrown out of the rotary drum through gaps of the first-stage centrifugal surface net 12 and wall holes of the first-stage rotary drum centrifugal distributor 9, solid phase forms filter cakes on the first-stage centrifugal surface net 12, when the first-stage rotary drum centrifugal distributor 9 returns, the filter cakes are relatively moved forward for a certain distance along the axial direction of the rotary drum, and when the first-stage rotary drum centrifugal distributor 9 moves, the surface of an empty screen is continuously filled with the suspension liquid, so that new filter cakes are formed. The filter cake formed by the continuous reciprocating motion of the material pushing disc 4 is continuously pushed forwards along the axial direction of the rotary drum to the second-stage rotary drum 2, finally the filter cake is pushed out of the rotary drum to enter the material collecting groove, and the filter cake is discharged out of the machine from the tangential discharge hole by a scraper 11 arranged on the second-stage rotary drum 2.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims

1. The utility model provides a push away material formula centrifuge's second grade rotary drum device, a serial communication port, it includes second grade rotary drum (2), the activity is provided with in the inner periphery of second grade rotary drum (2) pushes away charging tray (4), it is provided with cloth material mouth (8) to push away on the side circumference of charging tray (4), be provided with first order rotary drum centrifugal distributor (9) on the side circumference of cloth material mouth (8), first order rotary drum centrifugal distributor (9) are the toper structure, the inboard of first order rotary drum centrifugal distributor (9) is provided with first order centrifugal surface net (12), the partial inner wall that second grade rotary drum (2) grow out first order rotary drum centrifugal distributor (9) is provided with second grade screen cloth (10), it is provided with pushing sheet (6) to push away charging tray (4).

2. The secondary drum device of a pusher centrifuge as defined in claim 1, characterized in that the side end of the secondary drum (2) is provided with a water retaining ring (1) connected to the shaft and bearing assembly.

3. The secondary drum device of a pusher centrifuge as defined in claim 1, characterized in that the secondary drum (2) is connected to the pusher disk (4) by means of a pusher sealing ring (3).

4. The secondary drum device of a pusher centrifuge as defined in claim 1, wherein the centrifugal distributor (9) of the primary drum is provided at one end with a centrifugal mesh pressing ring (7), and the feeding pipe (5) is inserted into the centrifugal mesh pressing ring (7).

5. The secondary drum device of the pusher centrifuge as defined in claim 1, wherein the secondary drum (2) is in a shape of a straight cylinder, a drum pressing ring (14) is movably disposed at the side end of the secondary drum (2), and a scraper (11) is movably disposed at the side end of the drum pressing ring (14); a water retaining ring (13) is arranged between the second-stage rotary drum (2) and the rotary drum pressing ring (14).

6. The secondary drum device of the pusher centrifuge as defined in claim 1 wherein the secondary drum (2) has a straight cylindrical shape at one end, a conical shape at the end near the inlet pipe (5), and a secondary drum pressing ring (15) is movably disposed at the side end of the secondary drum (2).