CN212055835U - Rake dryer main shaft seal structure - Google Patents
Rake dryer main shaft seal structure Download PDFInfo
- Publication number
- CN212055835U CN212055835U CN202020654742.7U CN202020654742U CN212055835U CN 212055835 U CN212055835 U CN 212055835U CN 202020654742 U CN202020654742 U CN 202020654742U CN 212055835 U CN212055835 U CN 212055835U
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- main shaft
- sealing
- gland packing
- packing
- rake dryer
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Abstract
The utility model provides a rake dryer main shaft seal structure, includes main shaft and rake dryer cavity, the cover is equipped with gland packing and gland packing on the main shaft, form the gland packing between gland packing and main shaft and the outer lateral wall of rake dryer cavity, be provided with the filler in the gland packing, the longitudinal section of gland packing is L shape, and the horizontal end of L shape inserts the gland packing and extrudees the shutoff with the filler in the gland packing, and the vertical end of gland packing L shape passes through the bolt and is connected with the gland packing, the outer lateral wall of rake dryer cavity is protruding formation seal land in the gland packing, and the inside wall of seal land and gland packing closely combines, is provided with the sealing washer between seal land and the filler. The utility model provides a harrow formula desiccator main shaft seal structure solves and packs among the current structure and easily runs off the shut down maintenance cycle that causes weak point, the big problem of material pollution.
Description
Technical Field
The utility model relates to a seal structure, especially a harrow formula desiccator main shaft seal structure belongs to drying equipment technical field.
Background
In the pharmaceutical industry, a rake dryer is commonly used for drying intermediates and finished products, a rotating shaft sealing assembly of the rake dryer generally adopts a packing sealing structure, the existing packing sealing structure generally compresses packing in a packing box arranged between a main shaft and the side wall of the rake dryer by using a packing cover, and the packing is compressed with the main shaft and the side wall of the rake dryer to form sealing by using the plasticity of the packing. When the sealing structure is used, because a gap is formed between the main shaft and the side wall of the rake dryer and negative pressure is formed in the drying cavity of the rake dryer, chips generated by friction between the filling materials and the main shaft during the operation of the main shaft leak from the gap between the main shaft and the side wall of the dryer, although a small amount of leakage is allowed, after the main shaft is worn during long-term operation, the leakage of the filling materials is gradually increased due to the increase of the gap, so that not only can the materials in the dryer be polluted, but also the service time after each filling of the filling materials is shortened.
Disclosure of Invention
The invention aims to: the utility model provides a harrow formula desiccator main shaft seal structure, solves the easy problem that runs off the shut down maintenance cycle that causes of maintaining short, the material pollutes greatly of packing among the current structure.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a sealing structure of a main shaft of a rake dryer comprises a main shaft and a rake dryer cavity, wherein a stuffing box and a stuffing cover are sleeved on the main shaft, a stuffing box is formed between the stuffing box and the outer side wall of the main shaft and the outer side wall of the rake dryer cavity, stuffing is arranged in the stuffing box, the longitudinal section of the stuffing cover is L-shaped, the horizontal end of the L-shape is inserted into the stuffing box to extrude and seal the stuffing in the stuffing box, the vertical end of the L-shape of the stuffing cover is connected with the stuffing box through a bolt, the outer side wall of the rake dryer cavity protrudes towards the inside of the stuffing box to form a sealing table, the sealing table is tightly combined with the inner side wall of the stuffing box, and a sealing ring is arranged between; furthermore, the side surface of the sealing table adjacent to the sealing ring is obliquely arranged from the main shaft direction to the outer side of the dryer cavity, the sealing ring is a frustum-shaped sealing ring, and the oblique side surface of the frustum-shaped sealing ring is matched with the oblique side surface of the sealing table; furthermore, the length of the stuffing box is 30-50cm, N bolts are arranged between the stuffing cover and the stuffing box, wherein N is an even number, and the N bolts are symmetrically distributed on the stuffing cover; furthermore, the sealing ring is made of fluororubber or polytetrafluoroethylene.
The utility model discloses an actively beneficial technological effect lies in: the utility model discloses a set up the seal table that has oblique lateral wall at harrow formula desiccator cavity outer wall, set up frustum shape sealing washer between seal table and the filler, the filler that compresses tightly squeezes frustum shape sealing washer into between seal table and the main shaft, and pressure is bigger, the faying face between sealing washer and the seal table is tighter, effectively increased sealed effect, and still can guarantee sealed effect through the bolt on the fastening filler lid after the contact surface abrasion of seal ring and seal table or main shaft; because the sealing ring and the sealing table enhance the sealing between the main shaft and the inner cavity of the rake dryer, the amount of impurities of the filler entering the inner cavity is reduced, the equipment maintenance period is prolonged, and the length of the stuffing box can be lengthened to increase the sealing effect; the even number of the fastening bolts which are symmetrically distributed can ensure the compression effect of the packing on the sealing ring, and the sealing performance of the whole structure is improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an enlarged view of a seal ring according to an embodiment of the present invention after the seal ring is partially worn.
Detailed Description
In order to explain the utility model more fully, the following embodiment examples of the present invention are provided, which are only for the explanation of the present invention and do not limit the scope of the present invention.
The invention is explained in further detail with reference to the drawings, in which: 1. a main shaft; 2. the outer side wall of the cavity of the rake dryer; 3. a sealing table; 4. a filler; 5. a seal ring; 6. a stuffing box; 7. a filler cover; 8. and (4) bolts.
As shown in the figure: a rake dryer main shaft sealing structure comprises a main shaft 1 and a rake dryer cavity, wherein a stuffing box 6 and a stuffing cover 7 are sleeved on the main shaft, a stuffing box is formed between the stuffing box and the main shaft as well as the outer side wall of the rake dryer cavity, stuffing 4 is arranged in the stuffing box, the longitudinal section of the stuffing cover is L-shaped, the horizontal end of the L-shaped is inserted into the stuffing box to extrude and seal the stuffing in the stuffing box, the vertical end of the L-shaped stuffing cover is connected with the stuffing box through a bolt 8, the bolts are symmetrically arranged on the stuffing cover in pairs, the fastening effect can be ensured by fastening opposite bolts in sequence when fastening the bolts, the outer side wall of the rake dryer cavity protrudes towards the stuffing box to form a sealing platform 3, in the embodiment, the longitudinal section of the sealing platform is triangular, the hypotenuse of the triangle is adjacent to the sealing ring, the hypotenuse of the sealing platform inclines towards the outer side of the rake dryer cavity, the sealing, the inclined side surface of the frustum-shaped sealing ring is matched with the inclined side surface of the sealing platform. The arrangement of the frustum-shaped sealing ring enables the sealing structure to have certain self-adaptability, as shown in fig. 2, after the sealing ring is worn, because the diameter of the sealing ring close to the cavity of the dryer is smaller than that of the outer side, under the combined action of extrusion of a filler and plasticity of the sealing ring made of fluororubber or tetrafluoro plastic material, the sealing ring retracts towards the cavity of the dryer, and meanwhile, the sealing ring can be kept to be combined with the main shaft in a sealing mode, and still has good sealing performance. In the embodiment, the length of the stuffing box is 30cm, and the sealing between the main shaft and the cavity of the rake dryer is enhanced, so that the retention time of stuffing scraps in the stuffing box is increased due to long-time operation, the working period of replacing and supplementing stuffing is prolonged, and the longer stuffing box can be adopted to improve the sealing performance.
After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.
Claims (4)
1. The utility model provides a harrow formula desiccator main shaft seal structure, includes main shaft and harrow formula desiccator cavity, its characterized in that: the packing box is sleeved on the main shaft, a packing box is formed between the packing box and the main shaft as well as between the packing box and the outer side wall of the cavity of the rake dryer, packing is arranged in the packing box, the longitudinal section of the packing cover is L-shaped, the horizontal end of the L-shaped packing cover is inserted into the packing box to extrude and block the packing in the packing box, the vertical end of the L-shaped packing cover is connected with the packing box through a bolt, the outer side wall of the cavity of the rake dryer protrudes towards the inside of the packing box to form a sealing table, the sealing table is tightly combined with the inner side wall of the packing box, and a sealing ring is arranged between the sealing.
2. The sealing structure of the main shaft of the rake dryer according to claim 1, wherein: the side face, adjacent to the sealing table and the sealing ring, of the sealing table is obliquely arranged from the main shaft direction to the outer side of the dryer cavity, the sealing ring is a frustum-shaped sealing ring, and the oblique side face of the frustum-shaped sealing ring is matched with the oblique side face of the sealing table.
3. The sealing structure of the main shaft of the rake dryer according to claim 1, wherein: the length of the stuffing box is 30-50cm, N bolts are arranged between the stuffing cover and the stuffing box, wherein N is an even number, and the N bolts are symmetrically distributed on the stuffing cover.
4. The sealing structure of the main shaft of the rake dryer according to claim 1, wherein: the sealing ring is made of fluororubber or polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020654742.7U CN212055835U (en) | 2020-04-27 | 2020-04-27 | Rake dryer main shaft seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020654742.7U CN212055835U (en) | 2020-04-27 | 2020-04-27 | Rake dryer main shaft seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212055835U true CN212055835U (en) | 2020-12-01 |
Family
ID=73518275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020654742.7U Active CN212055835U (en) | 2020-04-27 | 2020-04-27 | Rake dryer main shaft seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212055835U (en) |
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2020
- 2020-04-27 CN CN202020654742.7U patent/CN212055835U/en active Active
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