CN217411123U

CN217411123U - Transmission mechanism in vertical centrifuge

Info

Publication number: CN217411123U
Application number: CN202221054449.2U
Authority: CN
Inventors: 李小东; 谢健; 姚建奇; 毛烨龙; 徐夏斌; 苏春亚
Original assignee: Jiangsu Huada Centrifugal Machine Manufacturing Co ltd
Current assignee: Jiangsu Huada Centrifugal Machine Manufacturing Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-09-13
Anticipated expiration: 2032-05-05

Abstract

The utility model discloses a drive mechanism among vertical centrifuge, include: main shaft and tube-shape bearing frame wear to be equipped with the supporting cylinder in the tube-shape bearing frame, and the main shaft sets up in the supporting cylinder through upper and lower bearing, and the main shaft overlaps in the outside of upper bearing in proper order to be equipped with axle sleeve and drain cover, and the cover is equipped with gland in the upper bearing on the axle sleeve, and gland includes in this upper bearing: the inner side and the outer side of the annular gland body are respectively provided with a liquid blocking ring and a liquid blocking barrel upwards to form a liquid collecting cavity; an upper bearing cover is sleeved on the liquid guide sleeve, a liquid guide sleeve sealing element is arranged between the liquid guide sleeve and the upper bearing cover, and the upper bearing cover is tightly abutted against an inner pressure cover of the upper bearing and is fixed on the cylindrical bearing seat; the liquid blocking cylinder is provided with a liquid discharging hole at the position close to the bottom wall of the liquid collecting cavity, a transverse liquid discharging pipeline communicated with the liquid discharging hole is arranged on the supporting cylinder in a penetrating mode, a longitudinal liquid discharging pipeline is arranged in the cylindrical bearing seat, and the longitudinal liquid discharging pipeline is connected with the transverse liquid discharging pipeline. The transmission mechanism greatly widens the application occasions of the centrifuge.

Description

Transmission mechanism in vertical centrifuge

Technical Field

The utility model relates to a vertical centrifuge, concretely relates to drive mechanism among vertical centrifuge.

Background

With the rapid development of economy, the application of the centrifugal machine is continuously expanded, and higher requirements are provided for the use working condition of the centrifugal machine. At present, when liquid is too much in the working process of a traditional vertical centrifuge, the liquid leaks into a bearing cavity from a position between a shaft sleeve on a main shaft and a sealing element between an upper bearing cover, and a bearing always runs under the working condition to cause premature damage, so that the service life of the bearing is greatly shortened, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a transmission mechanism in a vertical centrifuge is provided which prevents the flow of liquid into a bearing chamber.

For solving the technical problem, the utility model discloses the technical scheme who adopts does: a transmission mechanism in a vertical centrifuge structurally comprises: frame and activity set up the main shaft in the frame, and the concrete mounting structure of this main shaft includes: the cylindrical bearing seat of setting on the frame wears to be equipped with the supporting cylinder in the cylindrical bearing seat, and concrete setting mode is: the cylindrical bearing seat is internally provided with a stepped mounting hole with a large upper section and a small lower section, an annular step is formed between the upper section and the lower section of the stepped mounting hole, an annular mounting boss matched with the upper section of the stepped mounting hole is arranged at the position, close to the upper end of the supporting cylinder, the supporting cylinder is arranged in the stepped mounting hole in a penetrating way, and the annular mounting boss of the supporting cylinder is placed on the annular step in the stepped mounting hole; the main shaft set up in the supporting cylinder through upper and lower bearing activity, the main shaft overlap in proper order in the outside of upper bearing and be equipped with axle sleeve and drain cover, the axle sleeve on the sealed cover be equipped with gland in the upper bearing, gland's concrete structure includes in this upper bearing: the inner side of the annular gland body protrudes upwards to form a liquid blocking ring, the outer side of the annular gland body protrudes upwards to form a liquid blocking cylinder matched with the supporting cylinder, so that the annular gland body, the liquid blocking ring and the liquid blocking barrel form a liquid collecting cavity, the bottom wall of the liquid collecting cavity is inclined downwards from inside to outside, the liquid blocking cylinder is sealed and attached to the supporting cylinder, the upper end of the liquid blocking cylinder protrudes outwards to form an annular mounting edge matched with the supporting cylinder, the annular mounting edge is fixed on the supporting cylinder, the bottom surface of the annular gland body is provided with an annular gap with one side opening towards the main shaft, the side of the shaft sleeve facing the main shaft is provided with an annular oil passing groove, the shaft sleeve is also provided with an oil way connecting channel for communicating the annular gap and the annular oil passing groove, the main shaft is internally provided with a longitudinal oiling channel with an upward opening and a first transverse oiling channel communicated with the longitudinal oiling channel and the annular notch; an upper bearing cover is sleeved on the liquid guide sleeve, a liquid guide sleeve sealing element is arranged between the liquid guide sleeve and the upper bearing cover, and the upper bearing cover is in sealing abutment with the upper bearing inner pressure cover and is fixed on the cylindrical bearing seat; the liquid blocking cylinder is provided with a liquid discharging hole at the bottom wall close to the liquid collecting cavity, the supporting cylinder is provided with a transverse liquid discharging pipeline communicated with the liquid discharging hole at the upper side of the annular boss in a penetrating way, a longitudinal liquid discharging pipeline extending downwards is arranged in the cylindrical bearing seat, and the longitudinal liquid discharging pipeline penetrates through the annular boss on the supporting cylinder upwards and is connected with the transverse liquid discharging pipeline; the main shaft is provided with a lower bearing cover in a sealing manner at the lower end of the supporting cylinder, and the lower bearing cover is fixed on the supporting cylinder.

As a preferable scheme, in the transmission mechanism in the vertical centrifuge, the cylindrical bearing seat is further provided with a longitudinal gas injection pipeline which extends downwards, the longitudinal gas injection pipeline upwards penetrates out of the annular mounting boss on the supporting cylinder, and the upper bearing cover is provided with an in-cover gas channel for communicating the longitudinal gas injection pipeline with the liquid collecting cavity.

As a preferable scheme, in the transmission mechanism of the vertical centrifuge, the lower end of the liquid guide sleeve is provided with an annular flow guide boss protruding outwards.

As a preferable scheme, in the transmission mechanism of the vertical centrifuge, the annular flow guide boss is provided with a flow guide surface which is inclined downwards from inside to outside.

As a preferred scheme, in the transmission mechanism in the vertical centrifuge, the outer end of the longitudinal liquid discharge pipeline is connected with an external connecting pipe, a liquid discharge valve is arranged on the external connecting pipe, and an observation bottle with a transparent window is arranged in the pipeline of the external connecting pipe.

As a preferable scheme, in the transmission mechanism in the vertical centrifuge, a specific installation manner between the upper bearing cover and the upper bearing inner gland is as follows: the bottom surface of the upper bearing cover is provided with an annular clamping groove matched with the upper end of the upper bearing inner gland, the upper end of the upper bearing inner gland is clamped in the annular clamping groove, and a sealing ring is arranged between the bottom wall of the annular clamping groove and the upper end surface of the upper bearing inner gland.

Preferably, in the transmission mechanism of the vertical centrifuge, a bearing bush is sleeved on the main shaft between the upper bearing and the lower bearing.

As a preferable scheme, in the transmission mechanism in the vertical centrifuge, a second transverse oiling channel communicated with the longitudinal oiling channel is further formed on the main shaft below the first transverse oiling channel.

Preferably, in the transmission mechanism of a vertical centrifuge, the longitudinal liquid discharge pipeline and the longitudinal gas injection pipeline are arranged on two sides of the main shaft.

Preferably, in the transmission mechanism of the vertical centrifuge, the main shaft is movably arranged on the lower bearing cover through a bearing.

The utility model has the advantages that: the liquid guide sleeve, the liquid collection cavity, the corresponding longitudinal liquid discharge pipeline and the corresponding transverse liquid discharge pipeline are arranged, so that liquid leaked from the liquid guide sleeve flows into the liquid collection cavity and is discharged outwards through the longitudinal liquid discharge pipeline and the transverse liquid discharge pipeline; in addition, as the main shaft is provided with the oiling channel, the bottom surface of the annular gland body is provided with the annular notch, the shaft sleeve is provided with the annular oil passing groove, and the shaft sleeve is provided with the oil way connecting channel for communicating the annular notch with the annular oil passing groove, the upper bearing and the lower bearing can be oiled, so that the upper bearing and the lower bearing are more lubricated, the service life of the upper bearing and the lower bearing is greatly prolonged, and the production cost is reduced. Furthermore, the lower end of the liquid guide sleeve is provided with the annular flow guide boss which protrudes outwards, and the upper end surface of the annular flow guide boss is arranged to be of a structure which is inclined downwards from inside to outside, so that the flow speed and the flow direction of liquid are reduced, the liquid is ensured not to be splashed outside the liquid collection cavity, and the liquid is effectively ensured not to flow into the cavities of the upper bearing and the lower bearing; in addition, the external pipe, the observation bottle and the liquid discharge valve are arranged, so that the liquid discharge is more visual and controllable; in addition, because the gas injection pipeline is arranged, protective gas such as nitrogen and the like can be injected into the liquid collection cavity in the occasion of flammable liquid, so that the centrifugal machine has an explosion-proof function, and the application field of the centrifugal machine is further widened.

Drawings

Fig. 1 is a schematic sectional structural view of a transmission mechanism in a vertical centrifuge of the present invention.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is an enlarged structural view of a portion B in fig. 2.

Fig. 4 is an enlarged schematic structural view of a portion C in fig. 2.

The reference numerals in fig. 1 to 4 are respectively: 1. the oil filling device comprises a base, 11, a cylindrical bearing seat, 2, a main shaft, 201, a longitudinal oil filling channel, 202, a first transverse oil filling channel, 204, a second transverse oil filling channel, 21, a main shaft gland, 22, a lower bearing cover, 221, a bearing, 23, an upper bearing cover, 231, an inner gas channel, 234, a liquid collecting cavity, 2340, a bottom wall, 24, an inner gland of the upper bearing, 240, an annular gland body, 241, a liquid baffle ring, 242, a liquid baffle cylinder, 243, an annular mounting edge, 244, an annular notch, 25, a support cylinder, 251, an annular mounting boss, 26, a bearing bush, 271, an upper bearing, 272, a lower bearing, 28, a shaft sleeve, 281, a shaft sleeve sealing element, 283, an annular oil passing groove, 284, an oil channel connecting channel, 29, a liquid guide sleeve sealing element, 31, an air inlet pipe, 32, an adapter, 33, a longitudinal air injection pipeline, 4, a liquid guide sleeve, 41, an annular flow guide boss, 411, a flow guide surface, 51, a lower bearing, a lower oil guide sleeve, a lower oil guide, a, The device comprises a transverse liquid discharge pipeline 52, a longitudinal liquid discharge pipeline 61, an external connecting pipe 62, an observation bottle 63, a liquid discharge valve 7, a rotary drum bottom 8 and a driving wheel.

Detailed Description

The following describes a specific embodiment of a transmission mechanism in a vertical centrifuge according to the present invention in detail with reference to fig. 1 to 4.

As shown in fig. 1, a transmission mechanism in a vertical centrifuge, the structure of which includes: frame 1 and activity set up main shaft 2 in frame 1, and this main shaft 2's specific mounting structure includes: a cylindrical bearing seat 11 arranged on the machine base 1, a supporting cylinder 25 is arranged in the cylindrical bearing seat 11 in a penetrating way, as shown in fig. 2, the specific arrangement mode of the supporting cylinder 25 is as follows: the cylindrical bearing seat 11 is internally provided with a stepped mounting hole with a large upper section and a small lower section, an annular step is formed between the upper section and the lower section of the stepped mounting hole, an annular mounting boss 251 matched with the upper section of the stepped mounting hole is arranged at the upper end of the supporting cylinder 25, the supporting cylinder 25 is arranged in the stepped mounting hole of the cylindrical bearing seat 11 in a penetrating way, and the annular mounting boss 251 of the supporting cylinder 25 is placed on the annular step in the stepped mounting hole of the cylindrical bearing seat 11; the main shaft 2 is movably arranged in the supporting cylinder 25 through an upper bearing 271 and a lower bearing 272, and a bearing bush 26 is sleeved between the upper bearing 271 and the lower bearing 272 of the main shaft 2; the spindle 2 is sequentially sleeved with a shaft sleeve 28 and a liquid guide sleeve 4 outside the upper bearing 271 (upper side in fig. 1 and 2), as shown in fig. 3, the lower end of the liquid guide sleeve 4 is provided with an annular flow guide boss 41 protruding outwards, and the annular flow guide boss 41 is provided with a flow guide surface 411 inclining downwards from inside to outside; an upper bearing inner gland 24 is sleeved on the shaft sleeve 28, and a shaft sleeve sealing element 281 (belonging to the conventional technology in the field and not described herein) is arranged between the bearing 28 and the upper bearing inner gland 24; as shown in fig. 2, 3 and 4, the specific structure of the upper bearing inner gland 24 includes: the annular gland body 240, the inner side of the annular gland body 240 protrudes upwards to form a liquid blocking ring 241, the outer side of the annular gland body 240 protrudes upwards to form a liquid blocking cylinder 242 which is matched with the support cylinder 25, so that the annular gland body 240, the liquid blocking ring 241 and the liquid blocking cylinder 242 enclose a liquid collecting cavity 234, the bottom wall 2340 of the liquid collecting cavity 234 is a conical surface which inclines inwards and outwards and downwards, the liquid blocking cylinder 242 is tightly attached to the support cylinder 25 through a sealing ring (which belongs to the conventional technology in the field and is not described herein again), the upper end of the liquid blocking cylinder 242 protrudes outwards to form an annular mounting edge 243 which is matched with the support cylinder 25, the annular mounting edge 243 is fixed on the support cylinder 25 (which belongs to the conventional technology in the field and is not described herein again), the annular gland body 240 is provided with an annular notch 244 which is opened towards one side of the main shaft 2 on the bottom surface thereof, the shaft sleeve 28 is provided with an annular oil passing groove 283 on one side towards the main shaft 2, an oil circuit connecting channel 284 (belonging to the conventional technology in the field and not described herein) for communicating the annular notch 244 with the annular oil passing groove 283 is formed on the shaft sleeve 28, a longitudinal oiling channel 201 which is opened upwards and a first transverse oiling channel 202 for communicating the longitudinal oiling channel 201 with the annular notch 244 are arranged in the main shaft 2, and a second transverse oiling channel 204 which is communicated with the longitudinal oiling channel 201 is further formed below the first transverse oiling channel 202 on the main shaft 2; the upper bearing cover 23 is sleeved on the liquid guide sleeve 4, a liquid guide sleeve sealing element 29 is arranged between the liquid guide sleeve 4 and the upper bearing cover 23, the upper bearing cover 23 is in sealing abutting joint with the upper bearing inner gland 24 and is fixed on the cylindrical bearing seat 11, and the specific installation mode between the upper bearing cover 23 and the upper bearing inner gland 24 is as follows: an annular clamping groove matched with the upper end of the upper bearing inner gland 24 is formed in the bottom surface of the upper bearing cover 23, the upper end of the liquid blocking cylinder 242 of the upper bearing inner gland 24 is clamped in the annular clamping groove of the upper bearing cover 23, and a sealing ring is arranged between the bottom wall of the annular clamping groove of the upper bearing cover 23 and the upper end surface of the liquid blocking cylinder 242 (which belongs to the conventional technology in the field and is not described herein); a liquid discharge hole is formed in the position, close to the bottom wall 2340 of the liquid collecting cavity 234, of the liquid blocking cylinder 242, a transverse liquid discharge pipeline 51 communicated with the liquid discharge hole in the liquid blocking cylinder 242 penetrates through the upper side of the annular mounting boss 251 of the supporting cylinder 25, a longitudinal liquid discharge pipeline 52 extending downwards is arranged on one side of the cylindrical bearing seat 11, the longitudinal liquid discharge pipeline 52 upwards penetrates through the annular mounting boss 251 in the supporting cylinder 25 and is connected with the transverse liquid discharge pipeline 51, the outer end of the longitudinal liquid discharge pipeline 52 is connected with an external connecting pipe 61, a liquid discharge valve 63 is arranged on the external connecting pipe 61, and an observation bottle 62 with a transparent window is arranged in the pipeline of the external connecting pipe 61; in this embodiment, the cylindrical bearing seat 11 is further provided with a longitudinal gas injection pipeline 33 extending downward on the other side thereof, the longitudinal gas injection pipeline 33 extends upward from the annular mounting boss 251 on the support cylinder 25, the upper bearing cover 23 is provided with a cover internal gas channel 231 (belonging to the conventional technology in the field and not described herein) for communicating the longitudinal gas injection pipeline 33 with the liquid collecting cavity 234, and the outer end of the longitudinal gas injection pipeline 33 is connected with the gas inlet pipe 31 through the adapter 32; the main shaft 2 is sleeved with a lower bearing cover 22 at the lower end of the supporting cylinder 25 through a bearing 221, a sealing member (belonging to the conventional technology in the field and not described herein) is arranged between the main shaft 2 and the lower bearing cover 22, and the lower bearing cover 22 is fixed on the supporting cylinder 25 (belonging to the conventional technology in the field and not described herein).

In practical application, the upper end of the main shaft 2 is connected with the rotary drum bottom 7 of the rotary drum, a main shaft gland 21 is arranged after the main shaft 2 extends out of the rotary drum bottom 7, and the main shaft gland 21 is fixed on the rotary drum bottom 7; the lower end of the main shaft 2 is provided with a driving wheel 8.

The utility model discloses a theory of operation does: after the liquid leaks through the liquid guide sleeve sealing element 29, the liquid enters the liquid collecting cavity 234 through the liquid guide sleeve 4, the inclined plane on the upper bearing inner gland 24, namely the bottom wall 2340 of the liquid collecting cavity 234, converges, and then the liquid is discharged outwards to the external connecting pipe 61 through the transverse liquid discharge pipeline 51 and the longitudinal liquid discharge pipeline 52, during the discharging process, the liquid level in the observation bottle 62 needs to be checked, and after the observation bottle 62 is full of liquid, the liquid is discharged through the liquid discharge valve 63, so that the liquid can be prevented from entering the cavity of the upper bearing 271 to damage the bearing; meanwhile, the usage condition of the liquid guide sleeve sealing member 29 can be monitored by observing the liquid collection amount of the bottle 62. In addition, in case of flammable liquid, nitrogen gas can be injected into the liquid collecting chamber 234 through the air inlet pipe 31, the longitudinal air injection pipe 33 and the cover inside gas passage 231 in the upper bearing cover 23, thereby preventing the explosion caused by the generation of sparks during the rotation.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the shapes, structures, features and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A drive mechanism in a vertical centrifuge comprising: frame and activity set up the main shaft in the frame, its characterized in that, the concrete mounting structure of main shaft includes: the cylindrical bearing seat of setting on the frame wears to be equipped with the supporting cylinder in the cylindrical bearing seat, and concrete setting mode is: the cylindrical bearing seat is internally provided with a stepped mounting hole with a large upper section and a small lower section, an annular step is formed between the upper section and the lower section of the stepped mounting hole, an annular mounting boss matched with the upper section of the stepped mounting hole is arranged at the position, close to the upper end of the supporting cylinder, the supporting cylinder is arranged in the stepped mounting hole in a penetrating way, and the annular mounting boss of the supporting cylinder is placed on the annular step in the stepped mounting hole; the main shaft set up in the supporting cylinder through upper and lower bearing activity, the main shaft overlap in proper order in the outside of upper bearing and be equipped with axle sleeve and drain cover, the axle sleeve on the sealed cover be equipped with gland in the upper bearing, gland's concrete structure includes in this upper bearing: the inner side of the annular gland body protrudes upwards to form a liquid blocking ring, the outer side of the annular gland body protrudes upwards to form a liquid blocking cylinder matched with the supporting cylinder, so that the annular gland body, the liquid blocking ring and the liquid blocking barrel form a liquid collecting cavity, the bottom wall of the liquid collecting cavity is inclined downwards from inside to outside, the liquid blocking cylinder is sealed and attached to the supporting cylinder, the upper end of the liquid blocking cylinder protrudes outwards to form an annular mounting edge matched with the supporting cylinder, the annular mounting edge is fixed on the supporting cylinder, the bottom surface of the annular gland body is provided with an annular gap with one side opening towards the main shaft, the side of the shaft sleeve facing the main shaft is provided with an annular oil passing groove, the shaft sleeve is also provided with an oil way connecting channel for communicating the annular gap and the annular oil passing groove, the main shaft is internally provided with a longitudinal oiling channel with an upward opening and a first transverse oiling channel communicated with the longitudinal oiling channel and the annular notch; an upper bearing cover is sleeved on the liquid guide sleeve, a liquid guide sleeve sealing element is arranged between the liquid guide sleeve and the upper bearing cover, and the upper bearing cover is in sealing abutment with the upper bearing inner pressure cover and is fixed on the cylindrical bearing seat; the liquid blocking cylinder is provided with a liquid discharging hole at the bottom wall close to the liquid collecting cavity, the supporting cylinder is provided with a transverse liquid discharging pipeline communicated with the liquid discharging hole at the upper side of the annular boss in a penetrating way, a longitudinal liquid discharging pipeline extending downwards is arranged in the cylindrical bearing seat, and the longitudinal liquid discharging pipeline penetrates through the annular boss on the supporting cylinder upwards and is connected with the transverse liquid discharging pipeline; the main shaft is provided with a lower bearing cover in a sealing manner at the lower end of the supporting cylinder, and the lower bearing cover is fixed on the supporting cylinder.

2. The transmission mechanism in the vertical centrifuge as claimed in claim 1, wherein the cylindrical bearing seat is further provided with a longitudinal gas injection pipeline extending downwards, the longitudinal gas injection pipeline extends upwards out of the annular mounting boss on the supporting cylinder, and the upper bearing cover is provided with an in-cover gas channel for communicating the longitudinal gas injection pipeline with the liquid collecting cavity.

3. The transmission mechanism in the vertical centrifuge as claimed in claim 1, wherein the lower end of the liquid guide sleeve is provided with an annular flow guide boss protruding outwards.

4. The transmission mechanism of the vertical centrifuge as claimed in claim 3, wherein the annular guide projection is provided with a guide surface inclined downward from inside to outside.

5. The transmission mechanism of a vertical centrifuge as defined in claim 1, wherein the outer end of the longitudinal drainage tube is connected to an external tube, the external tube is provided with a drain valve, and the external tube is provided with an observation bottle having a transparent window.

6. The transmission mechanism in the vertical centrifuge as claimed in claim 1, wherein the specific installation mode between the upper bearing cover and the upper bearing inner gland is as follows: an annular clamping groove matched with the upper end of the upper bearing inner gland is formed in the bottom surface of the upper bearing cover, the upper end of the upper bearing inner gland is clamped in the annular clamping groove, and a sealing ring is arranged between the bottom wall of the annular clamping groove and the upper end surface of the upper bearing inner gland.

7. The transmission mechanism in a vertical centrifuge as claimed in claim 1, wherein the main shaft is sleeved with a bearing bush between the upper and lower bearings.

8. The transmission mechanism in the vertical centrifuge as claimed in claim 1, wherein the main shaft is further provided with a second transverse refueling passage communicated with the longitudinal refueling passage below the first transverse refueling passage.

9. The transmission mechanism in a vertical centrifuge as claimed in claim 1, wherein the longitudinal liquid discharge pipe and the longitudinal gas injection pipe are disposed on both sides of the main shaft.

10. The transmission mechanism of the vertical centrifuge as claimed in any one of claims 1 to 9, wherein the main shaft is movably disposed on the lower bearing cap through a bearing.