CN220909992U - Wear-resisting vacuum cover - Google Patents
Wear-resisting vacuum cover Download PDFInfo
- Publication number
- CN220909992U CN220909992U CN202322694037.6U CN202322694037U CN220909992U CN 220909992 U CN220909992 U CN 220909992U CN 202322694037 U CN202322694037 U CN 202322694037U CN 220909992 U CN220909992 U CN 220909992U
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- China
- Prior art keywords
- ring
- cover
- wear
- cover body
- sealing ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model relates to a wear-resistant vacuum cover. The wear-resistant vacuum cover comprises a cover body, wherein the lower end of the cover body is detachably connected with a sealing ring, the upper end of the cover body is in threaded connection with an end cover, an exhaust pipe is arranged on the end cover, and a sealing ring is arranged between the end cover and the cover body. The cover body comprises a cylindrical ring section and a conical ring section integrally connected with the lower end of the cylindrical ring section, and the inner diameter of the upper end of the conical ring is smaller than that of the lower end of the conical ring. The lower extreme of toper ring section is equipped with the outside flange that extends of level, the lower extreme of flange be equipped with the coaxial annular groove of toper ring section, be equipped with the internal thread on the inner wall of annular, the upside of sealing ring be equipped with the coaxial bulge loop of sealing ring, be equipped with on the inner wall of bulge loop with internal thread assorted external screw thread. The inner side of the seal ring is coplanar with the inner side of the flange. Compared with the prior art, the wear-resistant vacuum cover improves the sealing performance and prolongs the service life by replacing the sealing ring.
Description
Technical Field
The utility model belongs to the technical field of vacuum covers, and particularly relates to a wear-resistant vacuum cover.
Background
The shaft end seal of the screw vacuum pump adopts a lip type sealing structure, a soft lip part of the lip seal is used as a soft friction pair to be coated on a shaft sleeve used as a hard friction pair, the shaft sleeve rotates at a high speed along with a rotor shaft to be used as a dynamic friction pair, and the lip seal is installed in a bearing seat through interference fit of a metal framework to be used as a static friction pair. The traditional shaft sleeve is made of stainless steel 304 or 316 materials, the soft lip of the lip seal is seriously worn on the shaft sleeve due to poor wear resistance, the service life is short, meanwhile, the sealing failure is caused after the shaft sleeve is worn, the vacuum pumping performance of the screw vacuum pump is reduced, the air pumping performance and the service life of the screw vacuum pump are directly influenced, and therefore the wear-resistant vacuum cover is provided.
Disclosure of utility model
In order to solve the technical problems, the utility model provides a wear-resistant vacuum cover.
The utility model relates to a wear-resistant vacuum cover, which comprises the following technical scheme:
The utility model provides a wear-resisting vacuum hood, includes the cover body, the lower extreme of the cover body can be dismantled and be connected with the sealing ring, the upper end threaded connection of the cover body has the end cover, be equipped with the exhaust tube on the end cover, the end cover with be equipped with the sealing washer between the cover body.
As a further improvement to the technical scheme, the cover body comprises a cylindrical ring section and a conical ring section integrally connected with the lower end of the cylindrical ring section, and the inner diameter of the upper end of the conical ring is smaller than that of the lower end of the conical ring.
As a further improvement to the technical scheme, the lower end of the conical ring section is provided with a flange which extends outwards horizontally, the lower end of the flange is provided with a ring groove coaxial with the conical ring section, the inner wall of the ring groove is provided with internal threads, the upper side of the sealing ring is provided with a convex ring coaxial with the sealing ring, and the inner wall of the convex ring is provided with external threads matched with the internal threads.
As a further improvement to the above technical solution, the inner side of the sealing ring is coplanar with the inner side of the flange.
As a further improvement to the technical scheme, the inner side surface of the cylindrical ring section is provided with a ring groove, the sealing ring is arranged at the bottom of the ring groove, the inner side wall of the ring groove is provided with an inner thread, and the outer side surface of the end cover is provided with an outer thread.
As a further improvement to the technical scheme, the exhaust pipe is arranged at the center of the end cover, and the lower end of the exhaust pipe extends into the lower side of the end cover.
The utility model provides a wear-resistant vacuum cover, which has the beneficial effects that compared with the prior art:
When the wear-resistant vacuum cover is used, the sealing ring is connected in the annular groove on the lower side surface of the flange at the lower end of the cover body through the convex ring at the upper end in a threaded manner, the sealing ring is arranged at the bottom of the annular groove in a gasket manner, the end cover is connected on the inner wall of the cylindrical ring section in a threaded manner, and the end cover compresses the sealing ring in the annular groove. In the use process of the wear-resistant vacuum cover, when the sealing ring is worn for a long time to reduce the tightness, the sealing ring is detached from the flange at the lower end of the cover body and is replaced by a new sealing ring, so that the service life of the wear-resistant vacuum cover is prolonged. Compared with the prior art, the wear-resistant vacuum cover improves the sealing performance and prolongs the service life by replacing the sealing ring.
Drawings
FIG. 1 is a schematic view of a portion of the structure of a wear-resistant vacuum enclosure of the present utility model;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view at B in FIG. 1;
In the figure: 1. a cylindrical ring segment; 2. a conical section; 3. a cover body; 4. a flange; 5. a seal ring; 6. a convex ring; 7. an end cap; 8. a seal ring; 9. and (5) an exhaust pipe.
Detailed Description
The utility model is described in further detail below with reference to the attached drawings and detailed description:
The embodiment of the wear-resistant vacuum cover disclosed by the utility model, as shown in fig. 1 to 3, comprises a cover body 3, wherein a sealing ring 5 is detachably connected to the lower end of the cover body 3, an end cover 7 is connected to the upper end of the cover body 3 in a threaded manner, an exhaust pipe 9 is arranged on the end cover 7, and a sealing ring 8 is arranged between the end cover 7 and the cover body 3. The cover body 3 comprises a cylindrical ring section 1 and a conical ring section 2 integrally connected to the lower end of the cylindrical ring section 1, and the inner diameter of the upper end of the conical ring is smaller than that of the lower end of the conical ring. The lower extreme of toper ring section 2 is equipped with the flange 4 that extends outwards of level, the lower extreme of flange 4 be equipped with the coaxial annular groove of toper ring section 2, be equipped with the internal thread on the inner wall of annular groove, the upside of sealing ring 5 be equipped with the coaxial bulge loop 6 of sealing ring 5, be equipped with on the inner wall of bulge loop 6 with internal thread assorted external screw thread. The inner side of the sealing ring 5 is coplanar with the inner side of the flange 4. The inner side surface of the cylindrical ring section 1 is provided with a ring groove, the sealing ring 8 is arranged at the bottom of the ring groove, the inner side wall of the ring groove is provided with an internal thread, and the outer side surface of the end cover 7 is provided with an external thread. The exhaust pipe 9 is arranged at the center of the end cover 7, and the lower end of the exhaust pipe 9 extends into the lower side of the end cover 7.
When the wear-resistant vacuum cover is used, the sealing ring 5 is connected in the annular groove on the lower side face of the flange 4 at the lower end of the cover body 3 through the convex ring 6 at the upper end in a threaded manner, the sealing ring 8 is padded at the bottom of the annular groove, the end cover 7 is connected on the inner wall of the cylindrical ring section 1 in a threaded manner, and the end cover 7 presses the sealing ring 8 in the annular groove. In the use process of the wear-resistant vacuum cover, when the sealing ring 5 is worn for a long time to reduce the tightness, the sealing ring 5 is detached from the flange 4 at the lower end of the cover body 3, and a new sealing ring 5 is replaced, so that the service life of the wear-resistant vacuum cover is prolonged. Compared with the prior art, the wear-resistant vacuum cover improves the sealing performance and prolongs the service life by replacing the sealing ring 5.
The foregoing is only illustrative of the present utility model and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present utility model.
Claims (6)
1. The utility model provides a wear-resisting vacuum hood, its characterized in that includes the cover body, the lower extreme of the cover body can be dismantled and be connected with the sealing ring, the upper end threaded connection of the cover body has the end cover, be equipped with the exhaust tube on the end cover, the end cover with be equipped with the sealing washer between the cover body.
2. A wear-resistant vacuum enclosure in accordance with claim 1, wherein said enclosure body comprises a cylindrical ring segment and a tapered ring segment integrally connected to a lower end of said cylindrical ring segment, an upper end inner diameter of said tapered ring being smaller than a lower end inner diameter.
3. The wear-resistant vacuum cover according to claim 2, wherein the lower end of the conical ring section is provided with a flange extending horizontally outwards, the lower end of the flange is provided with a ring groove coaxial with the conical ring section, the inner wall of the ring groove is provided with internal threads, the upper side of the sealing ring is provided with a convex ring coaxial with the sealing ring, and the inner wall of the convex ring is provided with external threads matched with the internal threads.
4. A wear-resistant vacuum cup in accordance with claim 3, in which the inner side of the seal ring is coplanar with the inner side of the flange.
5. The wear-resistant vacuum housing of claim 4, wherein the inner side of the cylindrical ring segment is provided with a ring groove, the sealing ring is arranged at the bottom of the ring groove, the inner side wall of the ring groove is provided with an inner thread, and the outer side of the end cover is provided with an outer thread.
6. A wear-resistant vacuum cup in accordance with claim 5, wherein the suction tube is centrally located within the end cap, and a lower end of the suction tube extends into the underside of the end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322694037.6U CN220909992U (en) | 2023-10-09 | 2023-10-09 | Wear-resisting vacuum cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322694037.6U CN220909992U (en) | 2023-10-09 | 2023-10-09 | Wear-resisting vacuum cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220909992U true CN220909992U (en) | 2024-05-07 |
Family
ID=90906623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322694037.6U Active CN220909992U (en) | 2023-10-09 | 2023-10-09 | Wear-resisting vacuum cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220909992U (en) |
-
2023
- 2023-10-09 CN CN202322694037.6U patent/CN220909992U/en active Active
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Legal Events
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |