CN213255139U

CN213255139U - Scraper component for centrifuge with stable operation

Info

Publication number: CN213255139U
Application number: CN202021662394.4U
Authority: CN
Inventors: 常磊
Original assignee: Zhangjiagang Sumte Hydraulic Technology Co ltd
Current assignee: Zhangjiagang Sumte Hydraulic Technology Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-05-25
Anticipated expiration: 2030-08-11

Abstract

The utility model discloses a scraper subassembly for centrifuge that operation is stable, support, gyration box including fixed connection, wear to be equipped with lift cylinder in the support, be equipped with in the gyration box with the fall tube of lift cylinder rigid coupling, the outside cover of fall tube is equipped with rotatable rotatory sleeve, rotatory sleeve's top is stretched into rotationally the cover is established in the support lift cylinder is last, and its bottom is connected with scraper connecting portion. A first positioning assembly and a second positioning assembly used for restraining the rotary sleeve from shaking are respectively arranged in the support and the rotary box body. The utility model discloses a scraper subassembly has improved the stability when scraper subassembly removes through mechanical cooperation, has reduced the potential safety hazard that mechanical collision leads to.

Description

Scraper component for centrifuge with stable operation

Technical Field

The utility model relates to a scraper centrifuge equipment technical field especially relates to a scraper subassembly for centrifuge that moves stably.

Background

The working principle of the scraper centrifuge is that a motor drives a rotary drum to rotate, when a feeding rotating speed state is reached, materials to be separated enter the rotary drum rotating at a high speed through a feeding pipe, feeding is stopped after the feeding reaches a preset volume, the materials are lifted to high-speed separation, the materials are filtered through a filter cloth (filter screen) under the action of centrifugal force, a liquid phase penetrates through a filter layer rotary drum hole and is thrown to a cavity to be discharged through a liquid outlet pipe, a solid phase is intercepted in the rotary drum to form cylindrical dry materials, then the rotating speed is reduced to a discharging rotating speed state, a scraper component acts, and the dry materials are scraped from the inner wall of the rotary drum and are discharged through a. The action of scraper subassembly mainly includes lifting movement and rotary motion, but current scraper subassembly stability is relatively poor when removing, leads to the fact the potential safety hazard easily because of rocking and device collision.

Disclosure of Invention

In order to overcome the defects, the utility model aims to provide a scraper component for centrifuge, which operates stably, improves the stability of the scraper component when moving through mechanical cooperation, and reduces the potential safety hazard caused by mechanical collision.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a scraper subassembly for centrifuge that operates stably, includes fixed connection's support, gyration box, wear to be equipped with lift cylinder in the support, be equipped with in the gyration box with the fall tube of lift cylinder rigid coupling, the outside cover of fall tube is equipped with rotatable rotatory sleeve, rotatory sleeve's top stretches into in the support and rotationally the cover establish on the lift cylinder, its bottom is connected with scraper connecting portion. A first positioning assembly and a second positioning assembly used for restraining the rotary sleeve from shaking are respectively arranged in the support and the rotary box body.

Further, the first positioning assembly comprises a sealing sleeve, a guide key and a guide sleeve, the sealing sleeve is located between the rotating sleeve and the lifting oil cylinder, and the guide key is fixedly connected to the outer wall of the sealing sleeve. The guide sleeve is sleeved on the rotating sleeve, and a guide groove for embedding the guide key is formed in the inner wall of the guide sleeve. The top of the sealing sleeve is also provided with a limiting part for inhibiting the sealing sleeve from lifting and moving. The guide sleeve, the guide key and the sealing sleeve are arranged to be matched with the rotation of the rotating sleeve, so that the shaking of the top end of the rotating sleeve during rotation is reduced, and the rotation stability of the rotating sleeve is improved; the lifting movement of the sealing sleeve is limited by the limiting part, so that the axial driving force of the rotary sleeve to the sealing sleeve is reduced when the rotary sleeve moves in the lifting movement, and the stability of the lifting movement of the rotary sleeve is ensured.

Further, the limiting part comprises a supporting check ring, an upper bearing cover, an upper gland and an inner bushing. The upper gland and the upper bearing cover are fixedly connected with the guide sleeve through bolts, and the bottom of the upper gland abuts against the sealing sleeve; the inner bushing is sleeved on the lifting oil cylinder, and a bearing is arranged between the inner bushing and the upper bearing cover. The supporting retainer ring is positioned between the support and the lifting oil cylinder, and the lower end part of the supporting retainer ring is fixed with the inner bushing through the upper bearing cover. The supporting check ring is fixed between the support and the lifting oil cylinder through the limitation of the lower bearing cover and the inner bushing, further the upward movement of the sealing sleeve is effectively avoided, the fixed connection of the upper gland, the upper bearing cover and the guide sleeve is realized through the bolts, the rotary motion of the guide sleeve can be transmitted to the upper gland and the upper bearing cover, and the guide sleeve is prevented from moving in the axial direction.

Further, a guide ring is arranged between the sealing sleeve and the guide sleeve. The reverse rotation of the rotary sleeve can be avoided through the arrangement of the guide ring, and the working efficiency of the scraper is improved.

Furthermore, the second positioning assembly comprises a lower bearing cover fixedly connected to the lower end of the rotary box body, a lower sealing ring sleeved on the rotary sleeve is arranged on the lower bearing cover in a sealing mode, and a lower pressing cover fixedly connected with the lower bearing cover is arranged at the top of the lower sealing ring. The lower end part of the rotating sleeve is limited through the matching of the lower bearing cover, the lower sealing ring and the lower pressing cover, so that the moving stability of the rotating sleeve is improved, the lower end part of the rotating sleeve can be sealed, and the oil leakage phenomenon during lifting movement of the rotating sleeve is reduced.

Further, an inner O-shaped ring in sealing connection with the rotating sleeve is embedded on the inner wall of the lower sealing ring, and an outer O-shaped ring in sealing connection with the lower bearing cover is embedded on the outer wall of the lower sealing ring. The sealing performance between the lower sealing ring and the rotating sleeve and between the lower sealing ring and the lower bearing cover is improved through the arrangement of the inner O-shaped ring and the outer O-shaped ring.

The beneficial effects of the utility model reside in that: carry on spacingly to rotatory telescopic upper end, lower tip respectively through a locating component, No. two locating components, effectively reduced rocking when rotatory sleeve removes, improved its mobility stability, and then reduced the collision between each part, improved the security of scraper subassembly operation.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a partial enlarged view of portion A of FIG. 1;

fig. 3 is a partially enlarged view of a portion B in fig. 1.

In the figure:

1-a support; 2-a rotary box body; 3-lifting oil cylinder; 4-lifting a tube; 5-rotating the sleeve; 6-scraper connection; 71-sealing the sleeve; 72-a guide key; 73-a guide sleeve; 74-backup ring; 75-an upper bearing cap; 76-pressing the cover; 77 — inner liner; 78-a bearing; 79-a guide ring; 81-lower bearing cap; 82-a lower seal ring; 821-inner O-ring; 822-outer O-ring; 83-lower gland.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Examples

Referring to the attached drawings 1-3, the utility model discloses a scraper subassembly for centrifuge that operates stably, including fixed connection's support 1, gyration box 2, wear to be equipped with lift cylinder 3 in the support 1, be equipped with in the gyration box 2 with lift pipe 4 of 3 rigid couplings of lift cylinder, lift pipe 4's outside cover is equipped with rotatable rotating sleeve 5, rotating sleeve 5's top is stretched into in the support 1 and rotationally the cover is established on lift cylinder 3, its bottom is connected with scraper connecting portion 6. A first positioning assembly and a second positioning assembly used for restraining the rotary sleeve 5 from shaking are respectively arranged in the support 1 and the rotary box body 2.

Carry on spacingly to the upper end of rotatory sleeve 5, lower tip respectively through a locating component, No. two locating components, effectively reduced rocking when rotatory sleeve 5 removes, improved its mobility stability, and then reduced the collision between each part, improved the security of scraper subassembly operation.

In this embodiment, the first positioning assembly includes a sealing sleeve 71, a guide key 72, and a guide sleeve 73, where the sealing sleeve 71 is located between the rotating sleeve 5 and the lift cylinder 3, and the guide key 72 is fixed to an outer wall of the sealing sleeve 71. The guide sleeve 73 is sleeved on the rotating sleeve 5, and a guide groove for the insertion of the guide key 72 is formed in the inner wall of the guide sleeve. The top of the sealing sleeve is also provided with a limiting part for inhibiting the sealing sleeve from lifting and moving. The guide sleeve, the guide key and the sealing sleeve 71 can be matched with the rotation of the rotating sleeve 5, so that the shaking of the top end of the rotating sleeve 5 during rotation is reduced, and the rotation stability of the rotating sleeve is improved; the limit part limits the lifting movement of the sealing sleeve 71, so that the axial driving force of the rotary sleeve 5 to the sealing sleeve 71 during the lifting movement is reduced, and the stability of the lifting movement of the rotary sleeve 5 is ensured.

The limiting part comprises a supporting retainer ring 74, an upper bearing cover 75, an upper gland 76 and an inner bushing 77. The upper gland 76 and the upper bearing cover 75 are fixedly connected with the guide sleeve 73 through bolts, and the bottom of the upper gland 76 abuts against the sealing sleeve 71; the inner bushing 77 is sleeved on the lift cylinder 3, and a bearing 78 is arranged between the inner bushing and the upper bearing cover 75. The support collar 74 is located between the support 1 and the lift cylinder 3, and its lower end is fixed by an upper bearing cap 75 and an inner bushing 77. The supporting retainer ring 74 is fixed between the support 1 and the lifting oil cylinder 3 through the limit of the lower bearing cover 75 and the inner bushing 77, so that the sealing sleeve 71 is effectively prevented from moving upwards, the fixed connection of the upper gland 76, the upper bearing cover 75 and the guide sleeve 73 is realized through bolts, the rotary motion energy of the guide sleeve 73 can be transmitted to the upper gland 76 and the upper bearing cover 75, and the guide sleeve 73 is restrained from moving in the axial direction.

Preferably, a guide ring 79 is further arranged between the sealing sleeve 71 and the guide sleeve 73. The reverse rotation of the rotating sleeve 5 can be avoided through the arrangement of the guide ring 79, and the working efficiency of the scraper is improved.

In this embodiment, the second positioning assembly includes a lower bearing cover 81 fixedly connected to the lower end of the rotary box 2, a lower sealing ring 82 hermetically installed on the rotary sleeve 5 is installed on the lower bearing cover 81, and a lower pressing cover 83 fixedly connected to the lower bearing cover 81 is installed on the top of the lower sealing ring 82. The lower end part of the rotating sleeve 5 is limited by matching the lower bearing cover 81, the lower sealing ring 82 and the lower pressure cover 83, so that the moving stability of the rotating sleeve is improved, and the lower end part of the rotating sleeve 5 can be sealed, so that the oil leakage phenomenon during the lifting movement of the rotating sleeve is reduced.

An inner O-ring 821 hermetically connected with the rotating sleeve 5 is embedded on the inner wall of the lower sealing ring 82, an outer O-ring 822 hermetically connected with the lower bearing cover 81 is embedded on the outer wall of the lower sealing ring, and the inner O-ring 821 and the outer O-ring 822 are located on different horizontal planes. The sealing performance between the lower seal ring 82 and the rotating sleeve 5 and the lower bearing cap 81 is improved by the provision of the inner O-ring 821 and the outer O-ring 822.

It should be noted that a driving portion for driving the rotating sleeve 5 to rotate is arranged inside the rotating box 2, the driving portion is prior art, and the detailed structure of the driving portion is not described again in this embodiment.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. The utility model provides a scraper subassembly for centrifuge that operates stably which characterized in that: the lifting device comprises a support and a rotary box body which are fixedly connected, wherein a lifting oil cylinder penetrates through the support, a lifting pipe fixedly connected with the lifting oil cylinder is arranged in the rotary box body, a rotatable rotary sleeve is sleeved on the outer side of the lifting pipe, the top end of the rotary sleeve extends into the support and is rotatably sleeved on the lifting oil cylinder, and the bottom end of the rotary sleeve is connected with a scraper connecting part; a first positioning assembly and a second positioning assembly used for restraining the rotary sleeve from shaking are respectively arranged in the support and the rotary box body.

2. The doctor assembly for a centrifuge of claim 1, wherein: the first positioning assembly comprises a sealing sleeve, a guide key and a guide sleeve, the sealing sleeve is positioned between the rotating sleeve and the lifting oil cylinder, and the guide key is fixedly connected to the outer wall of the sealing sleeve; the guide sleeve is sleeved on the rotating sleeve, and a guide groove for embedding the guide key is formed in the inner wall of the guide sleeve; the top of the sealing sleeve is also provided with a limiting part for inhibiting the sealing sleeve from lifting and moving.

3. The doctor assembly for a centrifuge of claim 2, wherein: the limiting part comprises a supporting check ring, an upper bearing cover, an upper gland and an inner bushing; the upper gland and the upper bearing cover are fixedly connected with the guide sleeve through bolts, and the bottom of the upper gland abuts against the sealing sleeve; the inner bushing is sleeved on the lifting oil cylinder, and a bearing is arranged between the inner bushing and the upper bearing cover; the supporting retainer ring is positioned between the support and the lifting oil cylinder, and the lower end part of the supporting retainer ring is fixed with the inner bushing through the upper bearing cover.

4. The doctor assembly for a centrifuge of claim 2, wherein: and a guide ring is also arranged between the sealing sleeve and the guide sleeve.

5. The doctor assembly for a centrifuge as claimed in any one of claims 1 to 4, wherein: the second positioning assembly comprises a lower bearing cover fixedly connected to the lower end of the rotary box body, a lower sealing ring arranged on the lower bearing cover in a sealing sleeve mode is arranged on the lower bearing cover, and a lower pressing cover fixedly connected with the lower bearing cover is arranged at the top of the lower sealing ring.

6. The doctor assembly for a centrifuge of claim 5, wherein: and an inner O-shaped ring in sealing connection with the rotary sleeve is embedded on the inner wall of the lower sealing ring, and an outer O-shaped ring in sealing connection with the lower bearing cover is embedded on the outer wall of the lower sealing ring.