CN214888867U - Shaft end sealing device - Google Patents
Shaft end sealing device Download PDFInfo
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- CN214888867U CN214888867U CN202121186447.4U CN202121186447U CN214888867U CN 214888867 U CN214888867 U CN 214888867U CN 202121186447 U CN202121186447 U CN 202121186447U CN 214888867 U CN214888867 U CN 214888867U
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- main shaft
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- gap
- sleeve
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Abstract
The invention discloses a shaft end sealing device, which relates to the technical field of sealing and comprises a bearing seat (a), a bearing cover (b), a main shaft (c), a side cover (d), a bearing sleeve (e), a sealing mechanism and a bearing (z), wherein the bearing (z) is arranged on the main shaft (c) and is fixed in the bearing sleeve (e), the bearing sleeve (e) is arranged on the bearing seat (a) and is fixed through the bearing cover (b), the side cover (d) is sleeved into the main shaft (c) and is fixed on the bearing seat (a) or/and the bearing cover (b), and the sealing mechanism comprises an airtight mechanism, a sealing ring mechanism and an oil sealing mechanism. Realize the two-way sealing and ensure the sanitation of the processed production materials.
Description
Technical Field
The invention relates to the technical field of sealing, in particular to a shaft end sealing device.
Background
In food and medicine processing and producing machines, such as a mixer and the like, two or more materials are uniformly mixed by means of mechanical force, gravity and the like, working media are powder and liquid containing solid particles, when the mixer works, the powder and the liquid are easy to enter a shaft end sealing device, the shaft end sealing device is abraded, the shaft end sealing device is made to lose efficacy, and external oil stains and dust are easy to enter a mixing tank, so that the pollution of the materials is caused, and the sanitary quality of the food and the medicine is influenced.
Disclosure of Invention
In view of the problems in the production process, the invention aims to provide a shaft end sealing device which adopts an air-tight mechanism, a sealing ring mechanism and an oil seal mechanism for sealing.
In order to solve the technical problems, the following technical scheme is adopted:
a shaft end sealing device comprises a bearing seat, a bearing cover, a main shaft, a side cover, a bearing sleeve, a sealing mechanism and a bearing, wherein the bearing is arranged on the main shaft and fixed in the bearing sleeve;
the method is characterized in that: the sealing mechanism comprises an airtight mechanism, a sealing ring mechanism and an oil seal mechanism, the airtight mechanism comprises a main shaft, a bearing sleeve, a sealing cover and a sealing ring I, the sealing cover is provided with a shaft hole, is sleeved into the main shaft and positioned at the sealing end of the main shaft, is fixed on a bearing seat or/and the bearing cover and forms an open type gap air ring I through the gap between the shaft hole of the sealing cover and the main shaft, the sealing sleeve is cup-shaped and is provided with a shaft hole, the main shaft is sleeved into the main shaft through the shaft hole and is fixed in the bearing sleeve, the gap between the shaft hole of the sealing sleeve and the main shaft forms a gap air ring III, the main shaft is provided with a step II, the sealing ring I is sleeved into the main shaft and is compressed between the step II of the main shaft and the sealing sleeve in an abutting mode, one side of the gap air ring III, which forms a gap between the shaft hole of the sealing sleeve and the main shaft, the bearing sleeve is provided with a pipe hole, and the sealing sleeve is provided with an air hole, the pipe hole is positioned at one end of the air hole and communicated with the air hole, and the other end of the air hole is communicated with the gap air ring III; the sealing ring mechanism comprises a main shaft, a sealing sleeve and a sealing ring II, the main shaft and the sealing sleeve are provided with steps, the sealing ring II is sleeved in the main shaft and abuts against between the main shaft and the sealing sleeve steps, or the sealing ring II is sleeved in the main shaft and abuts against between the step II of the main shaft and the sealing ring I; the oil seal mechanism comprises a main shaft, a seal sleeve and a stainless steel oil seal, wherein the stainless steel oil seal is sleeved in the main shaft and is fixed at a second part of a step of the main shaft in the seal sleeve.
The first sealing ring is a polyethylene O-shaped sealing ring.
And the second sealing ring is a silica gel O-shaped sealing ring.
The stainless steel oil seal is of a single-lip type, or a double-lip type, or a triple-lip type.
The main shaft c is further provided with a first step c1, the first step c1 is arranged between the first gap balloon h1 and the third gap balloon h3 to form a second gap balloon h2 of the balloon h, and the second gap balloon h2 is communicated with the other end of the air hole f1 and is communicated with the first gap balloon h1 and the third gap balloon h 3.
The shaft end sealing device has the advantages of scientific, reasonable and novel design, simple and applicable structure, convenient installation and maintenance, reliable and safe sealing effect, can prevent dust or liquid of processed and produced materials from entering the bearing, can prevent grease of the bearing from entering the processed and produced materials, realizes bidirectional sealing, and ensures the sanitation of the processed and produced materials.
Drawings
FIG. 1 is a schematic perspective view of a shaft end seal assembly of the present invention;
FIG. 2 is a schematic cross-sectional view of the shaft end seal assembly of the present invention;
in the above drawings:
a-a bearing seat; b-a bearing cap; c-a main shaft; c 1-Axis one; c 2-axial step two; d-side cover; e-bearing housing; e 1-tubal ostia; f-sealing a sleeve; f 1-air vent; g-sealing cover; g 1-cover step; h-balloon; h 1-gap balloon one; h 2-gap balloon two; h 3-gap balloon III; i-a first sealing ring; j-a second seal ring; k-stainless steel oil seal; and a z-bearing.
Detailed Description
The present invention is further described in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Example one
As shown in fig. 1, a shaft end sealing device includes: the bearing comprises a bearing seat a, a bearing cover b, a main shaft c, a side cover d, a bearing sleeve e, a comprehensive sealing mechanism and a bearing z, wherein the bearing z is arranged on the main shaft c and fixed in the bearing sleeve e, the bearing sleeve e is arranged on the bearing seat a and fixed through the bearing cover b, and the side cover d is sleeved in the main shaft c and fixed on the bearing seat a or/and the bearing cover b (outer end) to axially position the bearing z.
Referring to fig. 2, the comprehensive sealing mechanism includes an airtight mechanism, a sealing ring mechanism and an oil seal mechanism, which form three sealing mechanisms.
The airtight mechanism comprises a main shaft c, a bearing sleeve e, a sealing sleeve f, a sealing cover g and a sealing ring I. The sealing cover g is provided with a shaft hole, is sleeved into the main shaft c, is positioned at the sealing end of the main shaft c, is fixed on the bearing seat a or/and the bearing cover b (inner end), and forms a circle of gap balloon h1 with an open balloon h through the gap between the shaft hole of the sealing cover g and the main shaft c. The sealing sleeve f is approximately cup-shaped (or approximately flowerpot-shaped), is provided with a shaft hole, is sleeved into the main shaft c through the shaft hole and is fixed in the mounting bearing sleeve e, a gap between the shaft hole of the sealing sleeve f and the main shaft c forms a circle of gap air ring three h3 of the air ring h, the main shaft c is provided with a step two c2, in the embodiment, the sealing ring I is a polyethylene O-shaped sealing ring, is sleeved into the main shaft c and is compressed between the step two c2 of the main shaft c and the sealing sleeve f in an abutting mode, one side of the gap air ring three h3 forming the gap between the shaft hole of the sealing sleeve f and the main shaft c is sealed, the bearing sleeve e is provided with a pipe hole e1, the sealing sleeve f is provided with an air hole f1, the e1 is positioned at one end of the air hole f1 and is communicated with the sealing sleeve, and the other end of the air hole f1 is communicated with the gap air ring three h3 of the air ring h. In practical use, the air flow pipeline is tightly connected with one end of the air hole f1 of the sealing sleeve f through the pipe hole e1 of the bearing sleeve e, when pressurized air flows in through the inlet of the air flow pipeline, because one side of the gap air ring h3 is sealed, an air-tight seal can be formed, and the air flow finally flows to the outlet of the open type gap air ring h1 formed by the gap between the shaft hole of the sealing cover g and the main shaft c. The airtight mechanism can seal and isolate materials processed and produced at the inner shaft end, and prevents material dust or liquid from entering the bearing to influence mechanical performance.
The sealing ring mechanism comprises a main shaft c, a sealing sleeve f and a sealing ring II j, the main shaft c and the sealing sleeve f are provided with steps, and the sealing ring II j is a silica gel O-shaped sealing ring which is sleeved in the main shaft c and abuts against (leans against) the steps of the main shaft c and the sealing sleeve f; or the sealing ring mechanism is combined with the airtight mechanism, and the sealing ring II j is sleeved in the main shaft c and abuts against a position between the step II c2 of the main shaft c and the sealing ring I. The sealing ring mechanism can seal and isolate materials produced by processing and grease of the bearing.
The oil seal mechanism comprises a main shaft c, a seal sleeve f and a stainless steel oil seal k, in the embodiment, the stainless steel oil seal k is a polytetrafluoroethylene PTFE stainless steel oil seal purchased from the market, or a single-lip type, or a double-lip type, or a triple-lip type, and the stainless steel oil seal k is sleeved into the main shaft c and fixed at the second step 2 part of the main shaft c in the seal sleeve f. The oil seal mechanism can seal and isolate the grease of the bearing, so that the sanitation of the processed production materials is ensured.
Example two
The present embodiment is basically similar to the first embodiment, except that in the air-tight mechanism of the present embodiment, the main shaft c is further provided with a first step c1, the first step c1 is disposed between a first gap balloon h1 in a gap between the shaft hole of the sealing cover g and the main shaft c, and a third gap balloon h3 in a gap between the shaft hole of the sealing cover f and the main shaft c, so as to form a second gap balloon h2 of the balloon h, which is also communicated with the other end of the air hole f1, and is communicated with a first gap balloon h1 and a third gap balloon h3 to form an integral balloon h together.
In addition to the above, the present invention may have other embodiments, which are not described in detail herein, and all technical solutions formed by using equivalent substitutions or equivalent transformations belong to the protection scope of the present invention.
Claims (5)
1. A shaft end sealing device comprises a bearing seat (a), a bearing cover (b), a main shaft (c), a side cover (d), a bearing sleeve (e), a sealing mechanism and a bearing (z), wherein the bearing (z) is installed on the main shaft (c) and fixed in the bearing sleeve (e), the bearing sleeve (e) is installed on the bearing seat (a) and fixed through the bearing cover (b), the side cover (d) is sleeved into the main shaft (c) and fixed on the bearing seat (a) or/and the bearing cover (b) to axially position the bearing (z);
the method is characterized in that: the sealing mechanism comprises an airtight mechanism, a sealing ring mechanism and an oil seal mechanism, the airtight mechanism comprises a main shaft (c), a bearing sleeve (e), a sealing sleeve (f), a sealing cover (g) and a sealing ring I, the sealing cover (g) is provided with a shaft hole, is sleeved into the main shaft (c), is positioned at the sealing end of the main shaft (c), is fixed on a bearing seat (a) or/and a bearing cover (b), a gap is formed between the shaft hole of the sealing cover (g) and the main shaft (c), so that an open gap balloon I (h1) is formed, the sealing sleeve (f) is cup-shaped and is provided with a shaft hole, the main shaft (c) is sleeved into the shaft hole through the shaft hole and is fixed in the mounting bearing sleeve (e), a gap between the shaft hole of the sealing sleeve f and the main shaft (c) forms a gap balloon III (h3),
the main shaft (c) is provided with a step II (c2), the first sealing ring (i) is sleeved in the main shaft (c) and is pressed between the step II (c2) of the main shaft (c) and the sealing sleeve (f) in a propping manner, one side of a gap gas ring III (h3) forming a gap between the shaft hole of the sealing sleeve (f) and the main shaft (c) is sealed, the bearing sleeve (e) is provided with a pipe hole (e1), the sealing sleeve (f) is provided with a gas hole (f1), the pipe hole (e1) is positioned at one end of the gas hole (f1) and is communicated with the gas hole III (h3), and the other end of the gas hole (f1) is communicated with the gap gas ring III (h 3); the sealing ring mechanism comprises a main shaft (c), a sealing sleeve (f) and a sealing ring II (j), the main shaft (c) and the sealing sleeve (f) are provided with steps, the sealing ring II (j) is sleeved in the main shaft (c) and abuts against between the main shaft (c) and the step of the sealing sleeve (f), or the sealing ring II (j) is sleeved in the main shaft (c) and abuts against between the step II (c2) of the main shaft (c) and the sealing ring I (i); the oil seal mechanism comprises a main shaft (c), a sealing sleeve (f) and a stainless steel oil seal (k), wherein the stainless steel oil seal (k) is sleeved on the main shaft (c) and is fixed at the position of a second step (c2) of the main shaft (c) in the sealing sleeve (f).
2. The shaft end seal of claim 1, wherein: and the first sealing ring (i) is a polyethylene O-shaped sealing ring.
3. The shaft end seal of claim 1, wherein: and the second sealing ring (j) is a silica gel O-shaped sealing ring.
4. The shaft end seal of claim 1, wherein: the stainless steel oil seal (k) is of a single-lip type, a double-lip type or a triple-lip type.
5. The shaft end seal of claim 1, wherein: the main shaft (c) is further provided with a first step (c1), the first step (c1) is arranged between the first gap balloon (h1) and the third gap balloon (h3) to form a second gap balloon (h2), and the second gap balloon (h2) is communicated with the other end of the air hole (f1) and communicated with the first gap balloon (h1) and the third gap balloon (h 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121186447.4U CN214888867U (en) | 2021-05-31 | 2021-05-31 | Shaft end sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121186447.4U CN214888867U (en) | 2021-05-31 | 2021-05-31 | Shaft end sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214888867U true CN214888867U (en) | 2021-11-26 |
Family
ID=78935484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121186447.4U Active CN214888867U (en) | 2021-05-31 | 2021-05-31 | Shaft end sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214888867U (en) |
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2021
- 2021-05-31 CN CN202121186447.4U patent/CN214888867U/en active Active
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