CN211887453U

CN211887453U - Centrifuge rotor

Info

Publication number: CN211887453U
Application number: CN202020277499.1U
Authority: CN
Inventors: 杜鸿; 赵玲; 周均生
Original assignee: Shanghai Tingbo Centrifuge Technology Co ltd
Current assignee: Shanghai Tingbo Centrifuge Technology Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-11-10
Anticipated expiration: 2030-03-09

Abstract

The utility model provides a centrifuge rotor, which comprises a rotary drum and a spiral coaxially arranged in the rotary drum, wherein a filtering section is arranged on the rotary drum, the filtering section is formed by a plurality of filtering holes arranged on the rotary drum, and filtering media are arranged at the filtering holes; and a washing screen used for washing the residual solid surface is arranged on the outer wall of the spiral. The centrifuge rotor further comprises: the liquid end shaft neck is coaxially fixed with the rotary drum and is driven to rotate by a driving wheel; a splined journal coaxially fixed with the helix; the spline shaft neck and the driving wheel are connected with a differential mechanism so as to realize the same-direction rotation and differential rotation speed of the rotary drum and the screw. The utility model is provided with a filtering section, and the solid material after centrifugation can be dewatered for the second time through the filtering section, thereby reducing the water content of the solid material; on the other hand, the washing screen cloth arranged on the spiral outer wall can wash the impurities remained on the surface of the solid material, thereby improving the product quality.

Description

Centrifuge rotor

Technical Field

The utility model belongs to the centrifugal separation equipment field, concretely relates to centrifuge rotor.

Background

The existing centrifuge conveys materials into a cavity of a rotor through a feeding pipe, then the rotor is driven by a driving mechanism to rotate and centrifuge to realize solid-liquid separation of the materials, but the water content of the solid materials after centrifugal separation by the existing centrifuge is higher, and impurities are remained on the surface of the separated solid materials, so that the purity of the solid materials is lower, and the subsequent process requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

Based on the above background problem, the utility model aims at providing a centrifuge rotor can carry out secondary dehydration and washing to the solid material after the centrifugation to reduce the moisture content of solid material and improve the purity of solid material.

In order to achieve the above object, the embodiment of the present invention provides a technical solution:

a centrifuge rotor comprises a rotary drum and a spiral coaxially arranged in the rotary drum, wherein a filtering section is arranged on the rotary drum and is formed by a plurality of filtering holes formed in the rotary drum, and filtering media are arranged at the filtering holes; and a washing screen used for washing the residual solid surface is arranged on the outer wall of the spiral.

Wherein the centrifuge rotor further comprises: the liquid end shaft neck is coaxially fixed with the rotary drum and is driven to rotate by a driving wheel; a splined journal coaxially fixed with the helix; the spline shaft neck and the driving wheel are connected with a differential mechanism so as to realize the same-direction rotation and differential rotation speed of the rotary drum and the screw.

Wherein, the centrifuge further comprises: a slag discharge port is formed in the discharge wheel disc, and the position of the slag discharge port corresponds to the position of the spiral blade so as to throw the solid-phase material out of the slag discharge port; the discharging wheel disc is also provided with a through hole for the feeding pipe to pass through so that the material enters the spiral cavity.

Preferably, the discharge wheel disc is of a claw-type structure.

In one embodiment, the spiral comprises a first cylindrical section, a second cylindrical section, and a conical section for connecting the first cylindrical section and the second cylindrical section, the drum having a shape matching the spiral.

Preferably, the diameter of the second cylindrical section is smaller than the diameter of the first cylindrical section, the liquid end journal is disposed adjacent the first cylindrical section, the discharge wheel disc is disposed adjacent the second cylindrical section, and the washing screen is disposed at the second cylindrical section.

In one embodiment, the washing screen is a bar structure.

Wherein, the cavity wall of the first cylindrical part is provided with a material distribution hole so that the material entering from the feeding pipe is distributed in the rotary drum.

Preferably, the inner wall of the first cylindrical part is provided with a baffle plate corresponding to the position of the material distribution hole, wherein the baffle plate is used for preventing the material from flowing back to the direction of the feeding pipe and is of a horn-shaped structure.

Preferably, a backflow hole is formed in the cavity wall of the second cylindrical part, so that materials which are not discharged from the material distribution hole are thrown into the rotary drum.

Compared with the prior art, the embodiment of the utility model provides a have following effect at least:

1. the utility model is provided with a filtering section, and the solid material after centrifugation can be dewatered for the second time through the filtering section, thereby reducing the water content of the solid material; on the other hand, the washing screen arranged on the spiral outer wall can wash the impurities remained on the surface of the solid material, thereby improving the product quality (namely, the purity).

2. The utility model discloses a arrange the material rim plate and be claw type structure, can reduce row's material resistance.

3. The utility model discloses correspond the department with cloth hole position in first cylindricality portion and be equipped with the baffle, can prevent to carry the material of coming to the inlet pipe direction backward flow from the inlet pipe, when partial material fails to enter into the rotary drum from the cloth hole in, still be equipped with backward flow hole in the second cylindricality portion, do not remove to the inlet pipe direction and get into in the rotary drum from backward flow hole department from cloth hole exhaust material.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a front cross-sectional view of a centrifuge rotor according to an embodiment of the present invention;

FIG. 2 is a front cross-sectional view of a spiral in an embodiment of the present invention;

fig. 3 is a front sectional view of a liquid end journal in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings of the specification, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, it should be noted that the terms "first" and "second" are used for convenience of description only and are not to be construed as indicating or implying relative importance.

The present embodiment provides a centrifuge rotor, as shown in fig. 1, comprising a bowl 1, a spiral 2, a splined journal 3, a liquid end journal 4 and a discharge disk 5.

As shown in fig. 1, the spiral 2 is coaxially disposed in the rotary drum 1, specifically, as shown in fig. 2, a plurality of spiral blades 201 are disposed on an outer wall of the spiral 2, and the spiral 2 includes a first cylindrical portion 2-1, a second cylindrical portion 2-3, and a tapered portion 2-2 for connecting the first cylindrical portion 2-1 and the second cylindrical portion 2-3, that is, in fig. 2, from left to right, the first cylindrical portion 2-1, the tapered portion 2-2, and the second cylindrical portion 2-3 are sequentially disposed; as shown in fig. 1, the drum 1 has a shape matching the spiral 2.

In this embodiment, as shown in fig. 1 and 2, the diameter of the first cylindrical portion 2-1 is greater than that of the second cylindrical portion 2-3, the spline shaft journal 3 is disposed adjacent to the first cylindrical portion 2-1, specifically, a first mounting seat 202 for connecting with the spline shaft journal 3 is disposed in the first cylindrical portion 2-1, the first mounting seat 202 in this embodiment has a shape and a size matched with the first cylindrical portion 2-1, so that a closed end is formed at the left side of the spiral 2, the left end of the spline shaft journal 3 is connected with a differential, the right end is fixed with the first mounting seat 202 by a screw, so that the spiral 2 is driven to rotate synchronously by the differential, and specifically, the spline shaft journal 3 is coaxially fixed with the spiral 2.

In order to drive the rotary drum 1 to rotate, as shown in fig. 1, a liquid end journal 4 is sleeved on the spline journal 3, in this embodiment, as shown in fig. 3 specifically, a first installation portion 4-1 extends from a left end of the liquid end journal 4, the liquid end journal 4 is connected with a belt pulley through the first installation portion 4-1, the belt pulley is connected with a differential, a second installation portion 4-2 extends from a right end of the liquid end journal 4, the second installation portion 4-2 is fixed with the rotary drum 1 through a screw to drive the rotary drum 1 to rotate, and specifically, the liquid end journal 4 is coaxially fixed with the rotary drum 1. That is, the present embodiment realizes the same rotation direction of the rotary drum 1 and the spiral 2 and the differential rotation speed through the differential mechanism.

In this embodiment, as shown in fig. 1, the discharge wheel disk 5 is coaxially disposed with the rotary drum 1, the discharge wheel disk 5 is disposed at the right end of the spiral 2, and the discharge wheel disk 5 is fixed to the rotary drum 1 by screws.

Specifically, the discharge wheel disc 5 is of a claw-shaped structure, that is, a plurality of supporting claws 501 horizontally extend from the inner side surface (left surface in fig. 1) of the discharge wheel disc 5, so that the overall longitudinal section formed by the supporting claws 501 and the discharge wheel disc 5 is of an inverted L-shaped structure, and at this time, the supporting claws 501 are connected with the rotary drum 1 through screws.

In this embodiment, a slag discharge port 502 is formed in the lower portion of the discharge wheel disc 5 to output a solid-phase material subjected to solid-liquid separation, a first through hole is formed in the center of the discharge wheel disc 5 to allow a feed pipe of a centrifuge to pass through and convey the material, for example, in a cavity of the screw 2, specifically, the feed pipe extends to a material distribution hole 204 described later to convey the material to the material distribution hole 204.

In order to ensure the stable arrangement of the feeding pipe, a pipe sleeve 503 is further inserted into the through hole, specifically, as shown in fig. 2, a second mounting seat 203 is arranged inside the second cylindrical part 2-3, the second mounting seat 203 has a shape and a size matched with those of the second cylindrical part 2-3, and a second through hole for the feeding pipe to pass through is arranged on the second mounting seat 203; as shown in fig. 1, a third mounting portion extends from a left end of the socket 503, and the third mounting portion is connected to the second mounting seat 203 by a screw, so that the socket 503 is fixed.

In this embodiment, the material is fed into the cavity of the spiral 2 from the feeding pipe, and in order to make the material enter the drum 1, as shown in fig. 2, a material distribution hole 204 is formed on the spiral 2, specifically, the material distribution hole 204 is disposed on the cavity wall of the first cylindrical portion 2-1, that is, the end of the feeding pipe extends to a position corresponding to the material distribution hole 204.

In order to prevent the material conveyed from the feeding pipe from flowing back to the feeding pipe, a baffle plate 205 is further arranged on the inner wall of the first cylindrical portion 2-1 corresponding to the position of the material distribution hole 204, as shown in fig. 2, the baffle plate 205 is of a horn-shaped structure and comprises a large-diameter end and a small-diameter end, the large-diameter end of the baffle plate 205 is fixed on the inner wall of the first cylindrical portion 2-1 and located on the right side of the material distribution hole 204, and the small-diameter end is arranged on the right side of the large-diameter end, namely, the material conveyed from the feeding pipe moves to the material distribution hole 204 along the baffle plate 205 and is thrown out under the action of centrifugal force.

However, the material fed from the feeding pipe cannot be guaranteed to enter the drum 1 from the material distribution hole 204 completely, and a part of the material enters the second cylindrical part 2-3, i.e. a part of the material flows back, and for this reason, the material flows back through the backflow hole 206 formed in the wall of the second cylindrical part 2-3.

After the materials are input from the feeding pipe and uniformly distributed into the rotary drum 1 from the material distribution holes 204, solid-liquid separation is performed under the action of centrifugal force, the separated solid materials move to the positions of the second cylindrical parts 2-3 under the pushing of the helical blades 201 of the spiral 2, in order to wash the separated solid materials, in the embodiment, the washing screen 6 is arranged on the outer wall of the second cylindrical parts 2-3, specifically, the washing screen 6 is in a strip-shaped structure and is arranged between every two adjacent helical blades 201, and the washing screen 6 can wash impurities remaining on the surfaces of the solid materials, so that the product quality (namely, the purity) is improved, and the number of the washing screens 6 is not limited in the embodiment.

In order to perform secondary dewatering on the separated solid material, as shown in fig. 1, a filtering section is disposed on the rotary drum 1 of this embodiment, the filtering section is disposed at a position corresponding to the second annular portion 2-3, that is, the filtering section is disposed on a small-caliber side of the rotary drum 1, specifically, the filtering section is formed by a plurality of filtering holes 101 disposed on the rotary drum 1, a filtering medium is disposed at the filtering holes 101, the filtering medium in this embodiment is a filtering screen, the filtering screen may be disposed at an opening end of the filtering hole 101 located at the inner side of the rotary drum, the filtering screen may also be wound around the inner wall of the rotary drum 1, and this embodiment is not particularly limited.

In this embodiment, the filtering holes 101 include a cylindrical portion and a conical portion that are communicated with each other, the conical portion is disposed inside the rotary drum 1, and the small-diameter end of the conical portion is connected to the cylindrical portion. Therefore, the area of the through hole can be increased, the filtering liquid phase passing through the filtering hole 101 can be smooth, and the reduction of the water content of the solid material is facilitated.

In this embodiment, in order to guarantee the smooth operation of rotor, the both ends of rotor form two bearing structure, and is concrete, as shown in fig. 1, the cover is equipped with first bearing 7 on the liquid end axle journal 4, first bearing 7 sets up on first supporting seat (not drawn in the figure), the outside (being the right side) cover of arranging material rim plate 5 is equipped with second bearing 8, and second bearing 8 sets up on the second supporting seat.

The utility model discloses when using, the level sets up in centrifuge's aircraft bonnet, and set up second cylindricality portion 2-3 in centrifuge solid phase material ejection of compact one side, the material enters into spiral 2's cloth hole 204 department from the inlet pipe, through cloth hole 204 evenly distributed on the first cylindricality portion 2-1 to in rotary drum 1, under the centrifugal force effect that high-speed rotation produced, the material layering, the solid phase material is under spiral 2's helical blade 201's promotion, to second cylindricality portion 2-3 one side removal, during the fillter section through rotary drum 1, the free liquid phase between the solid phase particle can be through discharge rotary drum 1 between the filter medium of filtration pore 101 department under the effect of centrifugal force, the solid phase particle is then by the filter medium separation and continues to solid row's cinder notch 502 promotion and discharge under the spiral.

It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A centrifuge rotor comprises a rotary drum and a spiral coaxially arranged in the rotary drum, and is characterized in that,

the rotary drum is provided with a filtering section, the filtering section is formed by a plurality of filtering holes formed in the rotary drum, and filtering media are arranged at the filtering holes;

and a washing screen used for washing the residual solid surface is arranged on the outer wall of the spiral.

2. The centrifuge rotor of claim 1 further comprising:

the liquid end shaft neck is coaxially fixed with the rotary drum and is driven to rotate by a driving wheel;

a splined journal coaxially fixed with the helix;

the spline shaft neck and the driving wheel are both connected with a differential mechanism so as to realize the same-direction rotation and differential rotation speed of the rotary drum and the screw.

3. The centrifuge rotor of claim 2 further comprising:

the discharge wheel disc is coaxially fixed with the rotary drum and is arranged opposite to the liquid end shaft neck;

a slag discharge port is formed in the discharge wheel disc, and the position of the slag discharge port corresponds to the position of the spiral blade so as to throw the solid-phase material out of the slag discharge port; the discharging wheel disc is also provided with a through hole for the feeding pipe to pass through so that the material enters the spiral cavity.

4. The centrifuge rotor of claim 3 wherein said discharge disk is of claw-type construction.

5. The centrifuge rotor of claim 3 wherein the spiral comprises a first cylindrical section, a second cylindrical section, and a conical section for connecting the first cylindrical section and the second cylindrical section, the bowl having a shape that matches the spiral.

6. The centrifuge rotor of claim 5 wherein the diameter of the second cylindrical portion is less than the diameter of the first cylindrical portion, the liquid end journal is disposed adjacent the first cylindrical portion, the discharge disk is disposed adjacent the second cylindrical portion, and the washing screen is disposed at the second cylindrical portion.

7. The centrifuge rotor of claim 6 wherein said washing screen is a bar structure.

8. The centrifuge rotor of claim 6 wherein the walls of the first cylindrical section are perforated with distribution holes to distribute material entering from the feed tube into the bowl.

9. The centrifuge rotor of claim 8, wherein a baffle plate for preventing the material from flowing back to the feeding pipe is further arranged on the inner wall of the first cylindrical part corresponding to the position of the material distribution hole, and the baffle plate is of a horn-shaped structure.

10. The centrifuge rotor of claim 8 wherein the walls of the second cylindrical section define recirculation holes to dump material not discharged through the distribution holes into the bowl.