CN212643586U - Plugging device for pumping port of high-vacuum container - Google Patents
Plugging device for pumping port of high-vacuum container Download PDFInfo
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- CN212643586U CN212643586U CN202021369938.8U CN202021369938U CN212643586U CN 212643586 U CN212643586 U CN 212643586U CN 202021369938 U CN202021369938 U CN 202021369938U CN 212643586 U CN212643586 U CN 212643586U
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Abstract
The utility model discloses a plugging device for a high vacuum container extraction opening, which belongs to the technical field of vacuum container plugging devices and comprises a high vacuum container, wherein the high vacuum container is provided with an extraction opening, a sealed connecting cavity communicated with the extraction opening is arranged outside the high vacuum container, a vacuum-pumping pipeline is arranged on the connecting cavity, an end cap is arranged in the connecting cavity and connected with a connecting rod, the connecting rod passes through the wall of the connecting cavity and extends out of the connecting cavity, a positioning sealing component is arranged between the connecting rod and the connecting cavity, and the connecting rod drives the end cap to move in a direction close to or far away from the extraction opening; the utility model discloses a location seal assembly can effectual control connecting rod the direction of motion and guarantee the connecting rod and be connected the gas tightness between the chamber to can guarantee at the in-process of evacuation and evacuation completion back, in can not having the external gas to enter into high vacuum container, guarantee high vacuum container's leakproofness.
Description
Technical Field
The utility model relates to a vacuum container plugging device technical field, concretely relates to a plugging device that is used for high vacuum container to take out a mouthful.
Background
At present, high vacuum vessels are widely applied to various industries, and particularly in the field of superconducting magnets, the service life of the superconducting magnet is directly determined by the vacuum degree and the sealing performance.
The vacuum degree of a high vacuum container generally applied to a superconducting magnet is less than or equal to 5.0E-3Pa, and the higher the original vacuum degree of the dewar of the superconducting magnet is due to leakage gas of the dewar of the superconducting magnet, the longer the service life of the superconducting magnet is, so that in actual operation, the original vacuum degree of a plurality of dewars of the superconducting magnet can reach less than or equal to 5.0E-4Pa, and the high requirement is very high on the sealing property of a pumping port used for vacuum pumping.
In the high vacuum container, the pumping port is one of the very important parts in the process of vacuumizing, the pumping port is generally sealed by a cylindrical plug in the prior art, and the side surface and the end surface of the plug are provided with sealing rings to improve the sealing effect. In addition, when the high vacuum container is accidentally broken and the pressure in the high vacuum container is higher than the external atmospheric pressure, the gas in the high vacuum container cannot smoothly push the sealing plug open to discharge the pressure, so that potential safety hazards exist.
Simultaneously, drive between the connecting rod that the end cap removed and the outside cavity that communicates with the mouth of taking out of high vacuum vessel usually adopt vacuum silicone grease or vacuum silicon mud to seal, the leakproofness of this kind of sealing method is relatively poor, and at the in-process of evacuation, any slight movement of taking out the mouth all can cause in the outside cavity of external gas entering high vacuum vessel, makes high vacuum vessel's vacuum variation. In addition, in order to ensure the air tightness, the chamber communicated with the pumping port outside the existing high vacuum container and the high vacuum container are difficult to disassemble, so that the high vacuum container is irregular in shape, occupies extra space and causes inconvenience to subsequent production.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a pair of a plugging device for high vacuum container takes out a mouthful can effectual control connecting rod the direction of motion and guarantee the connecting rod and be connected the gas tightness between the chamber through location seal assembly to can guarantee at the in-process of evacuation and evacuation completion back, can not have the outside gas to enter into high vacuum container in, guarantee high vacuum container's leakproofness.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the utility model provides a plugging device for high vacuum container takes out mouth, includes high vacuum container, high vacuum container has and takes out the mouth, high vacuum container outside be equipped with take out the sealed chamber of being connected of mouthful intercommunication, be equipped with the evacuation pipeline on connecting the chamber, it is equipped with the end cap to connect the intracavity, the end cap is connected with the connecting rod, the connecting rod passes connect chamber wall and follow stretch out in the chamber of connecting, the connecting rod with be equipped with the location seal assembly between the chamber of connecting, the connecting rod drives the end cap is being close to or is keeping away from take out the direction of mouthful and remove.
As a preferred technical scheme, the connecting cavity comprises a connecting cylinder and a sealing cover arranged at one end of the connecting cylinder, and the other end of the connecting cylinder is communicated with the drawing opening.
As a preferable technical scheme, a connecting table matched with the connecting cylinder is arranged at a position, corresponding to the connecting cylinder, on the high-vacuum container, and connecting seats are arranged at the joint of the connecting table and the connecting cylinder and the joint of the connecting cylinder and the sealing cover.
As a preferred technical scheme, first sealing rings are arranged between the connecting table and the connecting cylinder and between the connecting cylinder and the sealing cover.
As a preferred technical scheme, be equipped with the seal platform on the outer terminal surface of sealed lid, the seal platform has and link up the recess of sealed lid, the connecting rod passes the recess, the location seal subassembly is located including overlapping in proper order position sleeve, sealed dish, second sealing washer and gland on the connecting rod, the gland will the second sealing washer sealed dish with the position sleeve voltage-sharing is located the recess with clearance between the connecting rod, the second sealing washer sealed dish with the position sleeve divide equally do not with the inner wall of recess with the global laminating closely of connecting rod.
As a preferable technical scheme, the plug is tapered in a direction from one end close to the drawing opening to one end far away from the drawing opening, and the drawing opening is matched with the plug in shape.
As a preferable technical solution, at least two third sealing rings are provided on the circumferential surface of the plug.
As a preferable technical scheme, the connecting rod is in threaded connection with the plug.
The utility model has the advantages of that:
1. the utility model discloses a location seal assembly can effectual control connecting rod the direction of motion and guarantee the connecting rod and be connected the gas tightness between the chamber to can guarantee at the in-process of evacuation and evacuation completion back, can not have the external gas to enter into and connect the intracavity then get into high vacuum container, guarantee high vacuum container's leakproofness.
2. The utility model discloses a be detachable structure between connection chamber and the high vacuum vessel, accomplish when the evacuation to through the end cap with the sealed back of high vacuum vessel, can be convenient will connect the chamber and lift off, make the high vacuum vessel can not occupy extra space, the production of being convenient for when using.
3. The utility model discloses a location seal assembly, through the direction of motion of the spacing connecting rod of position sleeve, can effectually guarantee the connecting rod and be connected the gas tightness between the chamber through sealed dish and second sealing washer to fix through the gland, simple structure can guarantee going on smoothly of evacuation and shutoff.
4. The utility model discloses an end cap is the toper, and when the shutoff was in taking out a mouthful department, outside atmospheric pressure can have the extrusion force that is close to the high vacuum container direction to the end cap, guarantees sealed effect, simultaneously, when the inside pressure of high vacuum container was greater than outside atmospheric pressure, the end cap was opened in the top that gas in the high vacuum container can be smooth and easy, and discharge pressure can not have the potential safety hazard.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of a plugging device for a high vacuum container extraction opening of the present invention;
FIG. 2 is a schematic view of the plug of FIG. 1 plugging the withdrawal opening;
fig. 3 is an enlarged view of the area a in fig. 1.
In the figure: 1-high vacuum container, 11-pumping port, 2-connecting cavity, 21-vacuum pumping pipeline, 22-connecting cylinder, 23-sealing cover, 24-connecting seat, 25-first sealing ring, 26-sealing table, 3-plug, 31-third sealing ring, 4-connecting rod, 5-positioning sealing component, 51-positioning sleeve, 52-sealing disc, 53-second sealing ring and 54-pressing cover.
Detailed Description
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-3, an embodiment of a plugging device for a high vacuum container evacuation port according to the present invention includes a high vacuum container 1, a vacuum chamber is provided inside the high vacuum container 1, the high vacuum container 1 has an evacuation port 11, the vacuum chamber of the high vacuum container 1 is evacuated to a high vacuum state through the evacuation port 11, specifically, in the field of superconducting magnets, the high vacuum container 1 may be a dewar; a sealed connecting cavity 2 communicated with the vacuumizing opening 11 is arranged outside the high-vacuum container 1, a vacuumizing pipeline 21 is arranged on the connecting cavity 2, and the vacuumizing pipeline 21 is connected with a vacuumizing device to realize vacuumizing of the high-vacuum container 1; a plug 3 is arranged in the connecting cavity 2, the plug 3 is connected with a connecting rod 4, the connecting rod 4 penetrates through the wall of the connecting cavity and extends out of the connecting cavity 2, a positioning sealing assembly 5 is arranged between the connecting rod 4 and the connecting cavity 2, on one hand, the positioning sealing assembly 5 can enable the connecting rod 4 and the connecting cavity 2 to be sealed, and meanwhile, the moving direction of the connecting rod 4 can be limited to further ensure the sealing performance between the connecting rod 4 and the connecting cavity 2; the connecting rod 4 drives the plug 3 to move in the direction close to or far away from the drawing opening 11, and the plug 3 plugs the drawing opening 11 or the plug 3 is separated from the drawing opening 11 through the connecting rod 4.
In an embodiment of the present invention, please refer to fig. 1 and fig. 2, the connection cavity 2 includes a connection cylinder 22 and a sealing cover 23 disposed at one end of the connection cylinder 22, the other end of the connection cylinder 22 is communicated with the pumping port 11, and the connection cavity 2 is detachably connected to the high vacuum container 1, so as to facilitate the separation of the connection cavity 2 from the high vacuum container 1.
On the basis of the above embodiment, referring to fig. 1 and fig. 2, a connecting platform matched with the connecting cylinder 22 is arranged at a position corresponding to the connecting cylinder 22 on the high vacuum container 1, so that the sealing performance after the high vacuum container 1 is connected with the connecting cylinder 22 can be ensured; the connecting seat 24 is arranged at the connecting position of the connecting table and the connecting cylinder 22 and the connecting position of the connecting cylinder 22 and the sealing cover 23, the sealing performance can be further improved by applying a locking force at the connecting seat 24, and particularly, the connecting seat 24 can be locked through locking rings, bolts and other modes. Further, the first sealing rings 25 are arranged between the connecting table and the connecting cylinder 22 and between the connecting cylinder 22 and the sealing cover 23, so that the sealing performance is further improved.
In an embodiment of the present invention, please refer to fig. 1 and fig. 3, a sealing platform 26 is disposed on the outer end surface of the sealing cover 23, the sealing platform 26 has a groove penetrating the sealing cover 23, the connecting rod 4 passes through the groove, the positioning sealing assembly 5 includes a positioning sleeve 51 sleeved on the connecting rod 4 in sequence, a sealing disk 52, a second sealing ring 53 and a gland 54, the gland 54 locates the second sealing ring 53, the sealing disk 52 and the positioning sleeve 51 in a gap between the groove and the connecting rod 4, the second sealing ring 53, the sealing disk 52 and the positioning sleeve 51 are uniformly and closely attached to the inner wall of the groove and the circumferential surface of the connecting rod 4, the positioning sleeve 51 is used for limiting the moving direction of the connecting rod 4, the connecting rod 4 is guaranteed to move axially, the connecting rod 4 cannot move slightly in other directions, the sealing performance is improved, the sealing disk 52 and the second sealing ring 53 are used for further, The second sealing rings 53 are arranged in the grooves of the sealing platform 26, so that the contact area between the sealing platform 26 and the connecting rod 4 can be increased, and the sealing performance is improved.
The utility model discloses an in an embodiment, please refer to fig. 1 and fig. 2, end cap 3 is the toper along being close to the one end of taking out a mouthful 11 to keeping away from the direction of taking out the one end of taking out a mouthful 11, take out a mouthful 11 and match with end cap 3's shape, after the evacuation finishes, 3 shutoff of end cap take out a mouthful 11 back, outside atmospheric pressure can have the extrusion force that is close to high vacuum container 1 direction to end cap 3, guarantee sealed effect, and simultaneously, when 1 inside pressure of high vacuum container is greater than outside atmospheric pressure, end cap 3 can be opened in the smooth and easy top of gas in the high vacuum container 1, discharge pressure, there is no potential safety hazard. Furthermore, in order to improve the sealing performance, at least two third sealing rings 31 are arranged on the circumferential surface of the plug 3, and the third sealing rings 31 are distributed along the axial direction of the plug 3.
The utility model discloses an in one embodiment, establish to threaded connection connecting rod 4 and end cap 3, can conveniently dismantle between connecting rod 4 and the end cap 3.
It should be noted that one end of the connecting rod 4, which is located outside the connecting cavity 2, may be provided with a push rod or be connected with a telescopic assembly such as an electric push rod, an air cylinder, and a hydraulic cylinder, and the push rod or the telescopic assembly may be utilized to drive the connecting rod 4 to move, so as to realize that the plug 3 plugs the pumping opening 11 or separates from the pumping opening 11. After the evacuation finishes, utilize connecting rod 4 to drive end cap 3 shutoff and take out a mouthful 11 back, can make connecting rod 4 and sealed lid 23 separation through the mode of dismantling gland 54, through connecting seat 24 punishment separation high vacuum container 1 and connecting chamber 2 to make connecting rod 4 and end cap 3 separation through the mode of rotating connecting rod 4, can be convenient pull down parts such as connecting chamber 2, connecting rod 4 outside high vacuum container 1, avoid occupation space in subsequent production.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a plugging device for high vacuum container takes out mouth, characterized by, includes high vacuum container, high vacuum container has and takes out the mouth, high vacuum container outside be equipped with take out the sealed chamber of being connected of mouthful intercommunication, be equipped with the evacuation pipeline on connecting the chamber, it is equipped with the end cap to connect the intracavity, the end cap is connected with the connecting rod, the connecting rod passes connect chamber wall and follow stretch out in connecting the chamber, the connecting rod with be equipped with location seal assembly between the chamber, the connecting rod drives the end cap is being close to or keeping away from take out the direction of mouthful and remove.
2. The plugging device according to claim 1, wherein said connection chamber comprises a connection cylinder and a sealing cap disposed at one end of said connection cylinder, and the other end of said connection cylinder is communicated with said extraction opening.
3. The plugging device for the drawing port of the high vacuum container as claimed in claim 2, wherein a connection platform matched with the connection barrel is arranged at a position corresponding to the connection barrel on the high vacuum container, and connection seats are arranged at the connection position of the connection platform and the connection barrel and the connection position of the connection barrel and the sealing cover.
4. A sealing device for an opening of a high vacuum vessel as claimed in claim 3, wherein a first sealing ring is provided between the connection platform and the connection cylinder and between the connection cylinder and the sealing cover.
5. The plugging device for the drawing port of the high vacuum container according to claim 2, wherein a sealing platform is arranged on the outer end face of the sealing cover, the sealing platform is provided with a groove penetrating through the sealing cover, the connecting rod penetrates through the groove, the positioning sealing assembly comprises a positioning sleeve, a sealing disk, a second sealing ring and a gland, the positioning sleeve, the sealing disk, the second sealing ring, the sealing disk and the positioning sleeve are sequentially sleeved on the connecting rod, the gland enables the second sealing ring, the sealing disk and the positioning sleeve to be arranged in a gap between the groove and the connecting rod in a pressure-sharing manner, and the second sealing ring, the sealing disk and the positioning sleeve are evenly and tightly attached to the inner wall of the groove and the circumferential surface of.
6. A closure assembly as claimed in claim 1, wherein said stopper is tapered in a direction from an end adjacent said opening to an end remote from said opening, said opening matching the shape of said stopper.
7. The plugging device according to claim 6, wherein said plug has at least two third sealing rings on its periphery.
8. A closure assembly as claimed in claim 1, wherein said connecting bar is in threaded engagement with said plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021369938.8U CN212643586U (en) | 2020-07-14 | 2020-07-14 | Plugging device for pumping port of high-vacuum container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021369938.8U CN212643586U (en) | 2020-07-14 | 2020-07-14 | Plugging device for pumping port of high-vacuum container |
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| Publication Number | Publication Date |
|---|---|
| CN212643586U true CN212643586U (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021369938.8U Active CN212643586U (en) | 2020-07-14 | 2020-07-14 | Plugging device for pumping port of high-vacuum container |
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| CN (1) | CN212643586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116066628A (en) * | 2023-03-31 | 2023-05-05 | 山东奥新医疗科技有限公司 | Vacuumizing device with dynamic sealing mechanism |
-
2020
- 2020-07-14 CN CN202021369938.8U patent/CN212643586U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116066628A (en) * | 2023-03-31 | 2023-05-05 | 山东奥新医疗科技有限公司 | Vacuumizing device with dynamic sealing mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A plugging device for the outlet of high vacuum vessel Effective date of registration: 20210615 Granted publication date: 20210302 Pledgee: Weifang rural commercial bank Limited by Share Ltd. hi tech sub branch Pledgor: WEIFANG XINLI SUPERCONDUCTING MAGNET TECHNOLOGY Co.,Ltd. Registration number: Y2021980004794 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220628 Granted publication date: 20210302 Pledgee: Weifang rural commercial bank Limited by Share Ltd. hi tech sub branch Pledgor: WEIFANG XINLI SUPERCONDUCTING MAGNET TECHNOLOGY Co.,Ltd. Registration number: Y2021980004794 |