CN217152984U - Vertical mixer main shaft air-tight seal and lubricating structure - Google Patents
Vertical mixer main shaft air-tight seal and lubricating structure Download PDFInfo
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- CN217152984U CN217152984U CN202220991527.5U CN202220991527U CN217152984U CN 217152984 U CN217152984 U CN 217152984U CN 202220991527 U CN202220991527 U CN 202220991527U CN 217152984 U CN217152984 U CN 217152984U
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Abstract
The utility model provides a vertical mixer main shaft air-tight seal and lubrication structure, which comprises a gap adjusting sleeve arranged on the mixer main shaft, a biconvex annular seal chamber sleeved outside the gap adjusting sleeve, and a biconcave annular PTFE seal ring arranged in a groove of a lower stirring paddle and connected with the biconvex annular seal chamber in a buckling way; two gas distribution rings and a fluororubber framework oil seal sealing ring positioned between the two gas distribution rings are arranged between the inner wall surface of the biconvex annular sealing chamber and the outer wall surface of the gap adjusting sleeve; and both sides of the bottom of the biconvex annular sealing chamber are respectively provided with an air inlet and an oil inlet which are respectively used for adding compressed air and lubricating grease. The vertical mixer main shaft air-tight seal and lubrication structure has reliable structure, convenient manufacture, long service life and reliable seal; the phenomenon such as leakage, dust pollution environment do not take place at the job site, and effectual main shaft seal structure who has solved current vertical mixer is unreasonable, leaks the material and the sealing member does not have the lubricated leakage that causes, dust pollution scheduling problem.
Description
Technical Field
The utility model relates to a technical field that is used for chemical industry, plastics and food to mix the machine especially relates to a vertical mixer main shaft is airtight and lubricating structure.
Background
The main shaft sealing structure of the vertical kneading, mixing machine and reaction kettle in the prior art comprises a vertical mixing machine container, a mixing paddle, a main shaft, a sealing chamber, a common rubber sealing element, a main shaft gap adjusting sleeve and the like. The main shaft seal of the existing vertical mixer at home at present is a group of single common rubber framework oil seal structure, so-called air seal structure that no lubricating device is provided or only one part is provided with a hole for introducing compressed air is provided, and the introduced compressed air can not uniformly flow out along 360 degrees of dead angles of the outer cylindrical surface of the vertical main shaft to form an air barrier, so that powder materials can easily enter the framework oil seal to cause premature wear failure, and the problems of leakage, powder leakage, environmental pollution and the like of the main shaft of the mixer are caused.
SUMMERY OF THE UTILITY MODEL
To the not enough among the above-mentioned prior art, the utility model aims to solve the technical problem that a vertical mixer main shaft is airtight sealed and lubricating structure is provided, rational in infrastructure, sealed reliable, make easy, with low costs, long service life, maintain easy, the effectual main shaft seal structure who has solved current vertical mixer is unreasonable, leaks material and the sealing member does not have leakage, dust pollution scheduling problem that the lubrication caused.
In order to achieve the purpose, the utility model provides a vertical mixer main shaft air-tight seal and lubrication structure, which comprises a gap adjusting sleeve arranged on the mixer main shaft, a biconvex annular seal chamber sleeved outside the gap adjusting sleeve, and a biconcave annular PTFE seal ring arranged in a groove of a lower stirring paddle and connected with the biconvex annular seal chamber in a buckling way; two gas distribution rings and a fluororubber framework oil seal sealing ring positioned between the two gas distribution rings are arranged between the inner wall surface of the double-convex annular sealing chamber and the outer wall surface of the gap adjusting sleeve; an air inlet and an oil inlet are respectively arranged on two sides of the bottom of the double-convex annular sealing chamber, and an air inlet channel and an oil inlet channel which are communicated with the air inlet and the oil inlet are arranged in the double-convex annular sealing chamber; the outlet of the air inlet channel is communicated with a distribution round hole of an air distribution ring, and compressed air entering from the air inlet moves upwards through the air distribution ring and enters a ring labyrinth gap between the double-concave annular PTFE sealing ring and the double-convex annular sealing chamber to be expanded so as to form air flow with certain pressure and stable flow; the outlet of the oil inlet channel is communicated with the distribution round hole of the other gas distribution ring, and lubricating grease entering from the oil inlet is distributed between the outer circumferential surface of the clearance adjusting sleeve and the fluororubber framework oil seal sealing ring through the gas distribution ring.
Preferably, the gas distribution ring comprises an outer annular groove, an inner annular groove and distribution round holes communicated with the outer annular groove and the inner annular groove, the number of the distribution round holes is six, and the distribution round holes are uniformly distributed along the circumferential direction of the gas distribution ring.
Preferably, the double-concave annular PTFE seal ring has two annular grooves arranged at intervals, and the double-convex annular seal chamber has two annular protrusions respectively inserted into the annular grooves; the size of the annular bulge is smaller than that of the annular groove, and a double-convex and concave ring labyrinth gap is formed between the two annular bulges and the two annular grooves.
Furthermore, a sealing chamber gland is connected to the lower surface of the double-convex annular sealing chamber in a sealing manner through a sealing chamber gland fixing bolt.
Optionally, the air inlet is connected with an air inlet pipe joint in a threaded manner; an oil inlet pipe joint is connected to the oil inlet in a threaded manner.
Therefore, compared with the traditional mixer main shaft sealing structure, the vertical mixer main shaft air sealing and lubricating structure of the utility model has the advantages of reliable and reasonable structure, convenient manufacture, long service life and reliable sealing; the phenomena of leakage, dust pollution to the environment and the like do not occur in the working site; the environment is protected and improved, the running time of the equipment is greatly improved, and the production cost of enterprises is reduced. The problems that in the prior art, a vertical kneading and mixing machine and a reaction kettle are unreasonable in main shaft sealing structure, short in service life of a sealing element, easy to lose efficacy, easy to leak, easy to run powder and the like are solved. The vertical kneading and mixing machine is widely applicable to the vertical kneading and mixing machines in the technical fields of chemical industry, plastics, food and the like, in particular to the large-scale vertical kneading and mixing machines and the main shaft sealing structures of reaction kettles.
Drawings
Fig. 1 is a schematic structural view of the vertical mixer main shaft hermetic seal and lubrication structure of the present invention;
fig. 2 is a schematic structural view of the biconvex annular sealing chamber of the present invention;
fig. 3 is a schematic structural view of the double-concave annular PTFE seal ring of the present invention;
FIG. 4 is a schematic structural view of the gas distribution ring of the present invention;
FIG. 5 is a cross-sectional view of FIG. 4;
FIG. 6 is an enlarged schematic view taken at A in FIG. 1, with the direction of the arrows shown being the direction of flow of the compressed air;
fig. 7 is an enlarged view of B in fig. 1, in which the direction of the arrow shown in the lower part of the figure is the flow direction of the grease, and the direction of the arrow shown in the upper part of the figure is the flow direction of the compressed air.
The mixing device comprises a lower stirring paddle 1, a double-concave annular PTFE sealing ring 2, a gap adjusting sleeve 3, a gas distribution ring 4, a distribution circular hole 41, a fluororubber framework oil seal sealing ring 5, a double-convex annular sealing chamber 6, an air inlet pipe joint 7, a sealing chamber gland 8, a sealing chamber gland fixing bolt 9, a sealing chamber gland fixing bolt 10, a material throwing disc 11, a mixer main shaft 11, an oil inlet pipe joint 12, a mixing container 13 of a vertical mixer and a hexagon socket head sealing chamber fixing bolt 14.
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 of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by a person of ordinary skill in the art without creative efforts shall be included in the protection scope of the present invention.
The vertical mixer main shaft airtight sealing and lubricating structure of the present invention will be described in detail with reference to fig. 1 to 7.
The utility model discloses a vertical mixer main shaft is airtight sealed and lubricating structure establishes biconvex annular seal chamber 6 outside clearance adjustment cover 3, the installation in the recess of stirring rake 1 under and biconcave annular seal chamber 6 lock is connected biconvex annular PTFE sealing washer 2 including installing clearance adjustment cover 3 on main shaft 11, cover. The double-concave annular PTFE seal ring 2 is provided with two annular grooves which are arranged at intervals, the double-convex annular seal chamber 6 is provided with two annular bulges which are respectively inserted into the annular grooves, the size of each annular bulge is smaller than that of each annular groove, and double-convex and concave ring labyrinth gaps are formed between the two annular bulges and the two annular grooves.
Two gas distribution rings 4 and a fluororubber framework oil seal sealing ring 5 positioned between the two gas distribution rings 4 are arranged between the inner wall surface of the double-convex annular sealing chamber 6 and the outer wall surface of the gap adjusting sleeve 3. Wherein, the gas distribution ring 4 includes outer annular groove, interior annular groove and the distribution round hole 41 of intercommunication outer annular groove and interior annular groove, and the quantity of distribution round hole 41 is six to along the circumferencial direction evenly distributed of gas distribution ring 4. Six distribution circular holes 41 which are arranged on the circumference of the air distribution ring 4 and are communicated with the inner ring groove and the outer ring groove are used for the entry of compressed air or lubricating grease so as to uniformly distribute the compressed air or the lubricating grease to the outer circumferential surface of the gap adjusting sleeve 3.
An air inlet and an oil inlet are respectively arranged on two sides of the bottom of the double-convex annular sealing chamber 6, and an air inlet channel and an oil inlet channel communicated with the air inlet and the oil inlet are arranged in the double-convex annular sealing chamber 6.
The double-convex annular seal chamber 6 is fixed in a step hole on the inner plane of a mixing container 13 of the vertical mixer by 4 inner hexagonal seal chamber fixing screws 14, the gas distribution ring 4 and the fluororubber framework oil seal ring 5 are installed in the double-convex annular seal chamber 6, and the seal chamber gland 8 is fixed below the double-convex annular seal chamber 6 through a seal chamber gland fixing bolt 9. An air inlet pipe joint 7 and an oil inlet pipe joint 12 are respectively fixed on an air inlet and an oil inlet which are symmetrically arranged at 180 degrees on two sides of the bottom of the double-convex annular sealing chamber 6 through threaded connection, and an oil inlet channel is drilled in the left side wall of the double-convex annular sealing chamber 6 and used for adding lubricating grease. The right side wall of the double convex annular seal chamber 6 is drilled with an air intake passage for the passage of compressed air for the intake of compressed air.
The material throwing disc 10 and the gap adjusting sleeve 3 are arranged on a step of a main shaft 11 of the mixer, a lower stirring paddle 1 of the mixer is also arranged on the main shaft 11 of the mixer, and the double-concave annular PTFE sealing ring 2 is arranged in a corresponding groove below the lower stirring paddle 1. When the mixer works, compressed air with certain pressure and flow continuously enters an air inlet channel of the double-convex annular sealing chamber 6 through the air inlet pipe joint 7 and enters the air distribution ring 4, then is uniformly distributed into an external gap of the gap adjusting sleeve 3 through the outer and inner annular grooves and the six distribution circular holes 41 arranged on the air distribution ring 4 and moves upwards, and enters a double-convex and concave ring labyrinth gap formed between the double-concave annular PTFE sealing ring 2 and the double-convex annular sealing chamber 6 to be expanded, and forms air flow with certain pressure and stable flow, the air flow enters the double-convex and concave ring labyrinth gap, then further pressure equalization and flow stabilization are carried out through a plurality of annular groove gaps of the inner ring profile of the labyrinth, the air flow flows from inside to outside and enters the mixer, the compressed air with certain pressure and flow is diffused into the annular surface of 360 degrees to form a positive pressure annular air flow barrier, thereby blocking the powder material from entering the sealing chamber to achieve the effect of non-contact sealing. The air flow has certain pressure, the lip of the fluororubber framework oil seal sealing ring is tightly wrapped on the outer cylindrical surface of the gap adjusting sleeve by the pressure, so that the gap adjusting sleeve is airtight, and compressed air can only flow from bottom to top.
The oil inlet channel on the left side of the biconvex annular sealing chamber 6 is used for adding lubricating grease and is distributed between the outer circumferential surface of the gap adjusting sleeve 3 and the fluororubber framework oil seal sealing ring 5 through the gas distribution ring 4, and the lubricating grease added periodically effectively lubricates the fluororubber framework oil seal sealing ring 5, so that the service life of the fluororubber framework oil seal sealing ring 5 is prolonged.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a vertical mixer main shaft gas seal and lubricating structure which characterized in that: the double-convex annular PTFE seal ring sealing device comprises a gap adjusting sleeve (3) arranged on a main shaft (11) of a mixer, a double-convex annular sealing chamber (6) sleeved outside the gap adjusting sleeve (3), and a double-concave annular PTFE seal ring (2) which is arranged in a groove of a lower stirring paddle (1) and is buckled and connected with the double-convex annular sealing chamber (6);
two gas distribution rings (4) and a fluororubber framework oil seal sealing ring (5) positioned between the two gas distribution rings (4) are arranged between the inner wall surface of the double-convex annular sealing chamber (6) and the outer wall surface of the gap adjusting sleeve (3);
an air inlet and an oil inlet are respectively formed in two sides of the bottom of the double-convex annular sealing chamber (6), and an air inlet channel and an oil inlet channel which are communicated with the air inlet and the oil inlet are formed in the double-convex annular sealing chamber (6);
the outlet of the air inlet channel is communicated with a distribution circular hole (41) of a gas distribution ring (4), and compressed air entering from the air inlet moves upwards through the gas distribution ring (4) and enters a ring labyrinth gap between the double-concave annular PTFE sealing ring (2) and the double-convex annular sealing chamber (6) to be expanded so as to form air flow with certain pressure and stable flow;
the outlet of the oil inlet channel is communicated with the distribution round hole of the other gas distribution ring (4), and lubricating grease entering from the oil inlet is distributed between the outer circumferential surface of the clearance adjusting sleeve (3) and the fluororubber framework oil seal sealing ring (5) through the gas distribution ring (4).
2. The vertical mixer spindle gas-sealing and lubricating structure according to claim 1, wherein the gas distribution ring (4) comprises an outer annular groove, an inner annular groove and distribution circular holes (41) communicating the outer annular groove and the inner annular groove, the number of the distribution circular holes (41) is six, and the distribution circular holes are uniformly distributed along the circumferential direction of the gas distribution ring (4).
3. The vertical mixer spindle gas-sealing and lubricating structure according to claim 1, characterized in that the double concave annular PTFE seal ring (2) has two annular grooves arranged at intervals, and the double convex annular seal chamber (6) has two annular protrusions inserted into the annular grooves, respectively;
the size of the annular bulge is smaller than that of the annular groove, and a double-convex and concave ring labyrinth gap is formed between the two annular bulges and the two annular grooves.
4. The vertical mixer spindle gas-sealing and lubricating structure according to claim 1, characterized in that the lower face of the double-convex annular seal chamber (6) is hermetically connected with a seal chamber gland (8) by a seal chamber gland fixing bolt (9).
5. The vertical mixer spindle hermetic sealing and lubricating structure according to claim 1, wherein an air inlet pipe joint (7) is screwed at the air inlet;
an oil inlet pipe joint (12) is connected to the oil inlet in a threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220991527.5U CN217152984U (en) | 2022-04-26 | 2022-04-26 | Vertical mixer main shaft air-tight seal and lubricating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220991527.5U CN217152984U (en) | 2022-04-26 | 2022-04-26 | Vertical mixer main shaft air-tight seal and lubricating structure |
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| CN217152984U true CN217152984U (en) | 2022-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220991527.5U Active CN217152984U (en) | 2022-04-26 | 2022-04-26 | Vertical mixer main shaft air-tight seal and lubricating structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116726751A (en) * | 2023-06-15 | 2023-09-12 | 深圳市尚水智能股份有限公司 | Mixing device and cladding machine |
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2022
- 2022-04-26 CN CN202220991527.5U patent/CN217152984U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116726751A (en) * | 2023-06-15 | 2023-09-12 | 深圳市尚水智能股份有限公司 | Mixing device and cladding machine |
| CN116726751B (en) * | 2023-06-15 | 2024-04-09 | 深圳市尚水智能股份有限公司 | Mixing device and cladding machine |
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