CN214036886U

CN214036886U - Airtight sealing structure of centrifugal machine main shaft

Info

Publication number: CN214036886U
Application number: CN202022628461.7U
Authority: CN
Inventors: 林敏峰; 陈翼; 焦树春
Original assignee: Hunan Zhongyi Centrifuge Co ltd
Current assignee: Hunan Zhongyi Centrifuge Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-08-24
Anticipated expiration: 2030-11-13

Abstract

The utility model discloses an airtight seal structure of centrifuge main shaft relates to centrifuge technical field, including base and power unit, the top of base is equipped with the bottom plate, the top of bottom plate is equipped with the rotary drum, the through-hole has been seted up in the outside of rotary drum, the bottom of rotary drum is equipped with the main shaft, the outside of main shaft is equipped with the bearing, the outside of bearing is equipped with the bearing room, be equipped with tetrafluoro lip seal circle and last gland between bearing room and the rotary drum, the inside of bearing room and last gland all is equipped with the breather pipe, the one end of breather pipe is equipped with the airtight chamber, the other end of breather pipe is equipped with the blow vent. The utility model discloses, fill into nitrogen gas in to the breather pipe through the blow vent, because nitrogen gas is inert gas, and can exist around the main shaft for a long time, the running cost is low and the protection is effectual, has solved current centrifuge and has had the higher problem of running cost when using.

Description

Airtight sealing structure of centrifugal machine main shaft

Technical Field

The utility model relates to a centrifuge technical field, more specifically relate to an airtight seal structure of centrifuge main shaft.

Background

The centrifugal machine is equipment for realizing solid-liquid separation by utilizing centrifugal force, and is usually contacted with a substance with strong corrosiveness when the centrifugal machine works.

In chinese utility model patent application no: CN201621099113.2 discloses a feeding pipe of a centrifuge and a vertical centrifuge, which includes a material pipe body that can be inserted into a centrifuge drum in a lifting manner after passing through a centrifuge cover along its own axial direction, and a plurality of flow dividing pipes arranged at the discharging end of the material pipe body, wherein the material pipe body can also be inserted into the centrifuge drum in a rotating manner around its own axial lead direction. The feeding pipe of the centrifugal machine and the vertical centrifugal machine have the problems that the main shaft is not good in anti-corrosion effect when in use, and the running cost is high.

Therefore, it is necessary to provide a hermetic sealing structure for a centrifuge main shaft to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to provide a: in order to solve the problem that current centrifuge has the main shaft not good in anticorrosion effect when using, and has the higher problem of running cost, the utility model provides an airtight seal structure of centrifuge main shaft.

(II) technical scheme

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides an airtight structure of centrifuge main shaft, includes base and power unit, the top of base is equipped with the bottom plate, the top of bottom plate is equipped with the rotary drum, the through-hole has been seted up in the outside of rotary drum, the bottom of rotary drum is equipped with the main shaft, the outside of main shaft is equipped with the bearing, the outside of bearing is equipped with the bearing room, be equipped with tetrafluoro lip seal circle and last gland between bearing room and the rotary drum, the inside of bearing room and last gland all is equipped with the breather pipe, the one end of breather pipe is equipped with airtight chamber, the other end of breather pipe is equipped with the blow vent.

Furthermore, the diameter of the bottom plate is the same as that of the base, and a spindle nut is connected between the rotary drum and the spindle through a bolt.

Furthermore, the through holes are multiple and are uniformly distributed on the surface of the rotary drum.

Further, the bearing chamber is connected with a bottom plate through a bolt, and the main shaft is perpendicular to the top end of the bottom plate.

Furthermore, the power mechanism comprises a servo motor, a driving belt wheel, a driven belt wheel and a V-shaped belt, a motor support is fixedly connected between the outer side of the servo motor and the base, and the driven belt wheel is located at one end of the main shaft.

Furthermore, an output shaft of the servo motor is fixedly connected with one end of the driving belt wheel, and the V-shaped belt is positioned between the driving belt wheel and the driven belt wheel.

Further, the motor support is L-shaped, and the diameter of the driving belt wheel is larger than that of the driven belt wheel.

(III) advantageous effects

The utility model has the advantages as follows:

1. the utility model discloses, adopt tetrafluoro lip seal circle to seal up the one end of main shaft to formed the airtight chamber, the airtight chamber can exist for a long time, and has nothing to do with service environment and corrosive conditions, and then can make anticorrosive effect better, and can guarantee for a long time that the main shaft does not appear corroding, solved current centrifuge and had the not good problem of main shaft anticorrosion effect when using.

2. The utility model discloses, fill into nitrogen gas in to the breather pipe through the blow vent, because nitrogen gas is inert gas, and can exist around the main shaft for a long time, the running cost is low and the protection is effectual, has solved current centrifuge and has had the higher problem of running cost when using.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the present invention in partial section;

fig. 3 is a schematic perspective view of the tetrafluoro lip seal structure of the present invention;

fig. 4 is a partial perspective view of the structure of the present invention.

Reference numerals: 1. a spindle nut; 2. a drum; 3. a main shaft; 4. a tetrafluoro lip seal ring; 5. a gland is arranged; 6. a bearing chamber; 7. a base plate; 8. an airtight chamber; 9. a driven pulley; 10. a breather pipe; 11. a vent; 12. a bearing; 13. a V-band; 14. a base; 15. a driving pulley; 16. a servo motor; 17. a motor bracket; 18. a through hole; 19. provided is a power mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Example 1

Referring to fig. 1-4, an airtight sealing structure for a centrifuge main shaft includes a base 14 and a power mechanism 19, a bottom plate 7 is disposed at the top end of the base 14, a rotary drum 2 is disposed at the top end of the bottom plate 7, a through hole 18 is disposed at the outer side of the rotary drum 2, a main shaft 3 is disposed at the bottom end of the rotary drum 2, a bearing 12 is disposed at the outer side of the main shaft 3, a bearing chamber 6 is disposed at the outer side of the bearing 12, a tetrafluoro lip seal 4 and an upper gland 5 are disposed between the bearing chamber 6 and the rotary drum 2, vent pipes 10 are disposed inside the bearing chamber 6 and the upper gland 5, an airtight chamber 8 is disposed at one end of the vent pipe 10, and a vent 11 is disposed at the other end of the vent pipe 10.

In this embodiment, adopt tetrafluoro lip seal 4 to seal the one end of main shaft 3 to formed airtight chamber 8, airtight chamber 8 can exist for a long time, and has nothing to do with service environment and corrosive conditions, and then can make anticorrosive effect better, and can guarantee that main shaft 3 does not appear corroding for a long time, has solved current centrifuge and has had the not good problem of main shaft 3 anticorrosive effect when using.

Example 2

Referring to fig. 1-4, the present embodiment is further optimized based on embodiment 1, specifically, the diameter of the bottom plate 7 is the same as that of the base 14, and the spindle nut 1 is connected between the rotary drum 2 and the spindle 3 by a bolt.

Specifically, there are a plurality of through holes 18, and the plurality of through holes 18 are uniformly distributed on the surface of the rotary drum 2.

Specifically, the bearing chamber 6 is connected with the bottom plate 7 through bolts, and the top ends of the main shaft 3 and the bottom plate 7 are perpendicular to each other.

Specifically, the power mechanism 19 includes a servo motor 16, a driving pulley 15, a driven pulley 9 and a V-belt 13, a motor bracket 17 is fixedly connected between the outer side of the servo motor 16 and the base 14, and the driven pulley 9 is located at one end of the spindle 3.

Specifically, an output shaft of the servo motor 16 is fixedly connected with one end of the driving pulley 15, and the V-belt 13 is located between the driving pulley 15 and the driven pulley 9.

Specifically, the motor bracket 17 is L-shaped, and the diameter of the driving pulley 15 is larger than that of the driven pulley 9.

In the embodiment, the vent 11 is used for filling nitrogen into the vent pipe 10, and the nitrogen is inert gas and can exist around the main shaft 3 for a long time, so that the operation cost is low, the protection effect is good, and the problem that the existing centrifugal machine has high operation cost when in use is solved.

In summary, the following steps: the utility model can drive the driving belt wheel 15 to rotate through the servo motor 16 when the device is operated, then the driven belt wheel 9 and the main shaft 3 are driven to rotate through the V belt 13, the rotary drum 2 is further driven to rotate, the vent pipe 10 is filled with nitrogen through the vent hole 11, because nitrogen is inert gas and can exist around the main shaft 3 for a long time, the operation cost is low and the protection effect is good, the problem that the existing centrifugal machine has higher operation cost when in use is solved, the device adopts the tetrafluoro lip-shaped sealing ring 4 to seal one end of the main shaft 3, thus forming a hermetic chamber 8, which hermetic chamber 8 can exist for a long time, and is independent of the use environment and corrosive conditions, and then can make the anticorrosive effect better, and can guarantee for a long time that main shaft 3 does not appear corroding, solve current centrifuge and have the not good problem of main shaft 3 anticorrosive effect when using.

Above, only be the preferred embodiment of the present invention, not be used for limiting the present invention, the patent protection scope of the present invention is based on the claims, all the structural changes equivalent to the content of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a centrifuge main shaft airtight structure, includes base (14) and power unit (19), its characterized in that: the top of base (14) is equipped with bottom plate (7), the top of bottom plate (7) is equipped with rotary drum (2), through-hole (18) have been seted up in the outside of rotary drum (2), the bottom of rotary drum (2) is equipped with main shaft (3), the outside of main shaft (3) is equipped with bearing (12), the outside of bearing (12) is equipped with bearing chamber (6), be equipped with tetrafluoro lip seal circle (4) and last gland (5) between bearing chamber (6) and rotary drum (2), the inside of bearing chamber (6) and last gland (5) all is equipped with breather pipe (10), the one end of breather pipe (10) is equipped with air-tight chamber (8), the other end of breather pipe (10) is equipped with blow vent (11).

2. The centrifuge spindle airtight sealing structure according to claim 1, wherein: the diameter of the bottom plate (7) is the same as that of the base (14), and a spindle nut (1) is connected between the rotary drum (2) and the spindle (3) through a bolt.

3. The centrifuge spindle airtight sealing structure according to claim 1, wherein: the number of the through holes (18) is multiple, and the through holes (18) are uniformly distributed on the surface of the rotary drum (2).

4. The centrifuge spindle airtight sealing structure according to claim 1, wherein: the bearing chamber (6) is connected with the bottom plate (7) through bolts, and the top ends of the main shaft (3) and the bottom plate (7) are perpendicular to each other.

5. The centrifuge spindle airtight sealing structure according to claim 1, wherein: the power mechanism (19) comprises a servo motor (16), a driving belt wheel (15), a driven belt wheel (9) and a V-shaped belt (13), a motor support (17) is fixedly connected between the outer side of the servo motor (16) and the base (14), and the driven belt wheel (9) is located at one end of the spindle (3).

6. The centrifuge spindle airtight sealing structure of claim 5, wherein: an output shaft of the servo motor (16) is fixedly connected with one end of the driving belt wheel (15), and the V-shaped belt (13) is positioned between the driving belt wheel (15) and the driven belt wheel (9).

7. The centrifuge spindle airtight sealing structure of claim 5, wherein: the motor support (17) is L-shaped, and the diameter of the driving belt wheel (15) is larger than that of the driven belt wheel (9).