CN202935809U - Magnetic attracting type pressurized sealing device - Google Patents
Magnetic attracting type pressurized sealing device Download PDFInfo
- Publication number
- CN202935809U CN202935809U CN 201220636723 CN201220636723U CN202935809U CN 202935809 U CN202935809 U CN 202935809U CN 201220636723 CN201220636723 CN 201220636723 CN 201220636723 U CN201220636723 U CN 201220636723U CN 202935809 U CN202935809 U CN 202935809U
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- magnetic
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- sealing device
- permanent
- pressure sealing
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Abstract
The utility model discloses a magnetic attracting type pressurized sealing device. The pressurized sealing device comprises a seal cover provided with a round-cap-shaped cover body, wherein a skirt is arranged at the edge of an opening of the cover body; a plurality of permanent magnet switches capable of adjusting adsorption force are arranged in the skirt by surrounding the opening of the seal cover; the permanent magnet switches are provided with control rotation shafts; a part of each control rotation shaft exposes out of the upper surface of the skirt to form a section matched with rotating tools; and the pressurized sealing device is further provided with a magnetic-conductive rubber seal plate which covers the entire lower surface of the skirt, and a part of the magnetic-conductive rubber seal plate extends into the round-cap-shaped cover body, the extending section is in a shape of a bottleneck with a wide opening and is attached to the inner wall of the round-cap-shaped cover body, and a magnetic seal ring is arranged on the lower surface of the magnetic-conductive rubber seal plate by surrounding the opening of the seal cover. The magnetic attracting type pressurized sealing device has a good sealing effect, the magnetic lines of the adopted permanent magnet switches are sealed, the adsorption force is strong, before the pressurized sealing is applied, the magnetic force is small, the device is easy to position, during dismounting, the device can be adjusted to be in small adsorption force state, and the device is easy to dismount.
Description
Technical field
The utility model relates to a kind of magnetic-type band pressure sealing device, is specifically related to a kind of adsorption affinity of permanent magnet that utilizes and leakage container is implemented the device of sealing, and this device can be regulated the size of its adsorption affinity.
Background technology
Along with the fast development of national economy, movable vessel has been widely used in (comprising transportation tank, tank car, long-tube trailer, tank container and bundled tube freight container etc.) the strange land transportation of industrial fluids medium.Due to movable vessel has that carrying capacity is large, transportation means flexibly and the characteristics such as traffic cost is cheap, can carry out the transportation in highway, railway, water route or realize the through transport of these transportation modes, develop rapidly in national economy and play very important effect in process.
The medium overwhelming majority of movable vessel accumulating is inflammable, explosive, harmful liquefied gas or cryogen, transportable pressure vessel is except bearing interior pressure or external pressure effect under steam, also can be subject to continually impacting, shaking, the particularly generation of collision and traffic accident, can cause the leakage of splendid attire fluid, cause serious accident, bring very big harm for national wealth and people's life, social influence is extremely bad.Therefore, how easy, quick, eliminate the movable vessel leakage accident reliably, safely, be that field of sealing technology technical personnel with pressure needs the urgent technical matterss that solve.
At present, usually adopt magnetic-type sealing arrangement to carry out the quick pressurize sealing to the movable vessel that occurs to leak.The attractive force that magnetic-type sealing arrangement directly utilizes permanent-magnet material to produce realizes movable vessel band means of press seals, does not generally adopt electromagnet, because electromagnet very easily produces spark discharge when energising, runs into combustible products and can cause huge disaster.Adopt permanent-magnet material substantially to realize the effect of security seal, but three problems of ubiquity: the one, magnetic force is not enough, and the 2nd, be difficult for the location, the 3rd, not quick detachable.All can find above weak point in following patent of having declared.
Chinese utility model patent (the patent No.: introduced a kind of high-pressure strong-magnetization band pressure sealing device ZL200920218345.9), this is established several magnetic attracting device rings and be fixed on the outward flange of seal closure opening with pressure sealing device, magnetic attracting device comprises a box body, put into permanent magnet in box body, the port of box body contact container to be sealed seals with iron plate, permanent magnet itself is fixed with a dwang, dwang one end is positioned at the box body outside, can realize the adjusting of permanent magnet magnetic field direction by rotating this dwang, thereby control the size with the pressure sealing device adsorption affinity.But this magnetic attracting device has only used a magnetic pole of permanent magnet, and magnetic line of force does not form closed magnetic circuit, and during to seal of vessel, magnetic attraction is not enough.
Chinese utility model patent (the patent No.: introduced a kind of strong tape pressure sealing device ZL201020623909.X) and regulated the independent control of its magnetic force size, its independent control is provided with cover body, pass the cover body roof and be provided with a connecting rod, connecting rod one end that is positioned at cover body is fixed with magnet piece, be positioned at outer connecting rod one end of cover body and be provided with eccentric cam, can realize the adjusting of magnet piece and wall of container distance to be sealed by the rotating eccentricity cam, thereby control the size of strong tape pressure sealing device adsorption affinity, this independent control also has a kind of similar structure, connecting rod is threaded with magnet piece, also can realize magnet soon and the adjusting of wall of container distance to be sealed by rotation connecting rod itself.But still there is defects in this band pressure sealing device, has namely only utilized a magnetic pole of permanent magnet, and magnetic line of force does not form closed magnetic circuit, magnetic attraction is not enough, if the magnetic direction of magnet piece and connecting rod axis vertical distribution exist again adjustable range short, magnetic attraction changes unconspicuous defective.
Chinese utility model patent (the patent No.: introduced the strong magnetic of a kind of circular cap type sealing tool with pressure of speedily carrying out rescue work ZL200720095409.1), the sealed body of this sealing tool with pressure is comprised of ball column-shape showering and circular formwork, its shape is round shape for hat, be inlaid with magnetized block in circular formwork and every magnet frame, magnetized block is permanent magnet, during this execution of instrument sealing, because the magnetic force of permanent magnet just exists, so be difficult for the location, be adjusted in the absorption position difficulty on wall of container, unloading process is also comparatively loaded down with trivial details, or employing energising demagnetization, or utilize leverage that it is prized from airtight container.The similar patent of technical scheme also has Chinese utility model patent, and (patent No.: there is defects equally in the sealing arrangement that a kind of rubber of introducing ZL201010108746.6) is combined with ferromagnetic material.
The utility model content
Problem for the background technology existence, the purpose of this utility model is to provide a kind of magnetic attraction type band pressure sealing device, this magnetic-type band pressure sealing device utilizes permanent magnet to implement the band means of press seals, the magnetic line of force sealing, adsorption affinity is strong, can regulate the adsorption affinity size again simultaneously, magnetic force is little before implementing sealing, the location easily can be adjusted to little adsorption affinity state during dismounting, quick detachable.
In order to achieve the above object, the utility model adopts following technical scheme to realize:
A kind of magnetic-type band pressure sealing device, described band pressure sealing device comprises seal closure, the sealing cover is provided with round hat cover body, the cover body edge of opening is with skirt, opening around seal closure in described skirt is provided with the permanent-magnetic switching that several can regulate the adsorption affinity size, be provided with permanent magnets in described permanent-magnetic switching, permanent magnets is provided with the control rotating shaft, the axial setting of the magnetic direction vertical rotation axis of permanent magnets, regulate the magnetic attraction of permanent-magnetic switching by rotating shaft, a skirt upper surface part is exposed in described rotating shaft, consists of and the throw section of matching; Described band pressure sealing device also is provided with the magnetic conduction rubber gasket sheet, the magnetic conduction rubber gasket sheet covers the whole lower surface of described skirt and extends to a part in round hat cover body, this extension is wealthy mouthful of bottle-neck type, be close to round hat cover body inwall, be provided with magnetic gasket around the seal closure opening on magnetic conduction rubber gasket sheet lower surface.
Further, described permanent-magnetic switching is provided with magnetic support, magnetic support is made of ferromagnetic material clamping non-magnetic material, non-magnetic material partly is positioned at the middle part of magnetic support vertical direction, described magnetic support middle part partly is provided with the centre hole of vertical direction over against non-magnetic material, described centre hole penetrates an end face of magnetic support at least, and the hole wall of centre hole is made of ferromagnetic material and non-magnetic material, and same material is oppositely arranged; Be provided with rotatable stem stem in described centre hole, this stem stem is that permanent-magnet material is made, and the axis in the magnetic direction vertical centre hole of stem stem distributes, the magnetic field that can rotate in the horizontal direction stem stem; When the magnetic direction of stem stem during towards the ferromagnetic material part, the magnetic support rear magnetic attraction that is magnetized strengthens, and during towards the non-magnetic material part, the magnetic field of stem stem is by the magnetic that breaks when the magnetic direction of stem stem, and the magnetic attraction of magnetic support is weakened.
Further, in described magnetic support, the volume of ferromagnetic material part is greater than the non-magnetic material part, and two parts are integrally formed by welding.
Further, described magnetic support is arranged to cylinder or prism, or is the trapezoid body setting, and trapezoidal magnetic support is magnetized rear bottom adsorption affinity greater than top.
Further, described centre hole is circular hole, and the upper rim of centre hole is provided with the position-limited trough of the described stem stem anglec of rotation of restriction; Described stem stem is cylindrical or prismatic, and stem stem top is provided with the rotating shaft of rotation stem stem, and during the stem stem rotation, surrounding does not contact hole wall.
Further, described rotating shaft is made of two parts, made by ferromagnetic material with the stem stem linkage section, the lower end is provided with flange radially, diameter and the center-hole diameter of flange are suitable, and flange one side is provided with the inhibiting device that adapts to described position-limited trough, are made by non-magnetic material with the instrument section of matching, this section is arranged to prismatic, is provided with the groove of indication stem stem magnetic direction on end face.
Further, the material of described stem stem employing Al-Ni-Co series permanent-magnet alloy, siderochrome cobalt are any of permanent-magnet alloy, permanent-magnet ferrite, rare earth permanent-magnetic material or composite permanent-magnetic material.
Further, described centre hole is blind hole, and the upper surface that penetrates magnetic support arranges, and the magnetic support bottom is provided with the open-work of dismounting stem stem over against centre hole.
Further, described round hat cover body one side is provided with drainage system, and this drainage system is made of valve.
Further, described skirt is plane body or the arc body that adapts to wall of container to be sealed, and skirt top is provided with handle or the suspension ring of carry strap pressure sealing device.
A kind of magnetic-type band pressure sealing device of the utility model has the following advantages:
1. this magnetic-type seal closure with pressure sealing device is provided with the magnetic conduction rubber gasket sheet on driving surface, and magnetic conduction rubber gasket sheet lower peripheral also is provided with magnetic gasket, good sealing effect around the seal closure opening;
2. this magnetic-type permanent-magnetic switching that can regulate the adsorption affinity size that is provided with pressure sealing device, the magnetic support of permanent-magnetic switching has magnetic conduction and disconnected magnetic function concurrently, the middle part arranges the stem stem that permanent-magnet material is made, realize the size adjustment of magnetic attraction by the magnetic direction of rotation stem stem, can utilize simultaneously two magnetic poles of stem stem, adsorption affinity is strong;
3. permanent-magnetic switching has been done designs simplification largely on the basis of existing product, and manufacture craft is simple, and is easy to use;
4. permanent-magnetic switching arranges several in the skirt of seal closure, be adjusted into little adsorption affinity state before to wall of container band means of press seals, the location easily, fixed position on wall of container to be sealed is convenient to be regulated, can be adjusted to very soon strong adsorption affinity state after being adjusted to suitable sealing station with pressure, implement the band means of press seals;
5. this magnetic-type band pressure sealing device dismounting easily, adjusts permanent-magnetic switching to little adsorption affinity state before from the wall of container dismounting and get final product, and inside the Pass can not splitting, the magnetic of permanent magnet causes any infringement.
Description of drawings
Fig. 1 is cutaway view of the present utility model;
Fig. 2 is birds-eye view of the present utility model;
Fig. 3 is use constitution diagram of the present utility model;
Fig. 4 is the three-dimensional view of permanent-magnetic switching that the utility model uses;
Fig. 5 is the decomposition view of permanent-magnetic switching that the utility model uses;
Fig. 6 is the three-dimensional view of permanent-magnetic switching that the utility model uses;
Fig. 7 is the birds-eye view of permanent-magnetic switching that the utility model uses;
Fig. 8 is along the cutaway view of A-A in Fig. 4;
Fig. 9 is the magnetic direction view that the utility model uses the permanent-magnetic switching inner leg;
In figure: 1. magnetic support, 1-1. position-limited trough, 1-2. bottom outlet, 2. every magnet, 3. stem stem, 4. flange, 5. go up rotating shaft, 5-1. indication groove, 6. lower rotary shaft, 7. limiting device, 8. seal closure, 9. drainage system, 10. handle, 11. magnetic conduction rubber gasket sheets, 12. magnetic gaskets, 13. throws.
The specific embodiment
Be to reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the utility model, below in conjunction with accompanying drawing and preferred embodiment, structure of the present utility model, feature and effect be described in detail as follows.
As Fig. 1, Fig. 2, Figure 3 shows that one of the utility model embodiment, in this embodiment, magnetic-type band pressure sealing device comprises seal closure 8, seal closure 8 is provided with round hat cover body, the cover body edge of opening is with skirt, seal closure 8 is by high-strength organic fiber and elastomeric material is compound makes, and top is standard elliptical head, and elastomeric material can adopt neoprene or the synthetic plastics after sulfuration.
As shown in Figure 2, opening around seal closure 8 in skirt is provided with the permanent-magnetic switching that several can regulate the adsorption affinity size, the pressure of the quantity basis skirt area of permanent-magnetic switching, container inner fluid to be sealed is determined, can make in advance the groove suitable with the permanent-magnetic switching shape in skirt, permanent-magnetic switching is arranged in groove.As Fig. 1, shown in Figure 3, permanent-magnetic switching is provided with the control rotating shaft, and a skirt upper surface part is exposed in rotating shaft, consists of and throw 13 sections of matching.Throw 13 needs to adopt non-magnetic material to make.
As shown in Figure 1, the band pressure sealing device also is provided with magnetic conduction rubber gasket sheet 11, magnetic conduction rubber gasket sheet 11 covers the whole lower surface of skirt and extends to a part in round hat cover body, this extension is wealthy mouthful of bottle-neck type, be close to round hat cover body inwall, be bonded as one by adhesion agent with seal closure 8; Be provided with groove around the seal closure opening on magnetic conduction rubber gasket sheet 11 lower surfaces, be provided with magnetic gasket 12 in groove.
Magnetic conduction rubber gasket sheet 11 is by high-strength organic fiber and elastomeric material is compound makes, elastomeric material is nitrile rubber plate or the viton plate that adds after the sulfuration of 30%-50% magnetic conduction powder, have good magnetic property, the adsorption affinity of permanent-magnetic switching is not caused and weaken.Select nitrile rubber magnetic conduction rubber gasket sheet to be applicable to the band means of press seals that oil product class chemical mediator leaks, select magnetic viton magnetic conduction rubber gasket sheet to be applicable to the band means of press seals that the strong solubility chemical mediator leaks.
The permanent-magnetic switching that the utility model uses is provided with magnetic support 1, and magnetic support 1 is made of ferromagnetic material clamping non-magnetic material, and non-magnetic material partly is positioned at the middle part of magnetic support 1 vertical direction, namely in Fig. 4 every magnet 2.Ferromagnetic material can adopt the materials such as carbon steel, and non-magnetic material can adopt the materials such as corrosion-resistant steel, copper.
As Fig. 5, shown in Figure 8, be provided with rotatable stem stem 3 in centre hole, this stem stem 3 is made for permanent-magnet material, and its material employing Al-Ni-Co series permanent-magnet alloy, siderochrome cobalt are any of permanent-magnet alloy, permanent-magnet ferrite, rare earth permanent-magnetic material or composite permanent-magnetic material, preferred nd-fe-b or aluminium nickel cobalt.
As shown in Figure 9, the axis in the magnetic direction vertical centre hole of stem stem 3 distributes, can its Distribution of Magnetic Field of manual control in the manufacturing process of stem stem 3, and make its magnetic direction be positioned at radial direction.
As Fig. 4, shown in Figure 5, in magnetic support 1, the volume of ferromagnetic material part is greater than the non-magnetic material part, and two parts are integrally formed by welding.The purpose that arranges like this is magnetic direction when stem stem 3 during towards the non-magnetic material part, and magnetic support 1 still has certain magnetic, only presents minimum adsorption affinity state, can locate on wall of container, and convenient mobile adjustment.
As Fig. 5, shown in Figure 7, centre hole is circular hole, and the upper rim of centre hole is provided with the position-limited trough 1-1 of restriction stem stem 3 anglecs of rotation; Stem stem 3 is cylindrical or prismatic, adopts cylindrically in this embodiment, and the radius of stem stem 3 is less than the centre hole radius, and during rotation, surrounding does not contact hole wall.
As Fig. 5, shown in Figure 8, rotating shaft is made of two parts, made by ferromagnetic material with stem stem 3 linkage sections, i.e. lower rotary shaft in figure 6, its lower end is provided with flange 4 radially, and diameter and the center-hole diameter of flange 4 are suitable, flange 4 one sides are provided with the limiting device 7 that adapts to position-limited trough 1-1, limiting device 7 can adopt the straight pin of a non-magnetic material, and a circular hole radially is set on flange 4, and limiting device 7 is pegged graft fixing with flange 4.
Made by non-magnetic material with the instrument section of matching in rotating shaft, i.e. upper rotating shaft 5 in figure, this section is arranged to prismatic, is provided with the indication groove 5-1 of indication stem stem 3 magnetic directions on end face.Ferromagnetic material can adopt the materials such as carbon steel, and non-magnetic material can adopt the materials such as corrosion-resistant steel, copper.
Upper rotating shaft 5 and lower rotary shaft 6 are by being welded into one, and lower rotary shaft 6 can make up by modes such as welding, draw-in grooves with stem stem.
After this permanent-magnetic switching assembles, between stem stem 3 and magnetic support 1 by the magnetic attraction Nature Link-rise, but adsorption affinity between the two is stronger, be inconvenient to dismantle, as Fig. 6, shown in Figure 8, for from the interior dismounting stem stem 3 of magnetic support 1, magnetic support 1 bottom is provided with bottom outlet 1-2 over against centre hole, can probe into instrument from bottom outlet 1-2 stem stem 3 is ejected.
As shown in Figure 1, circle hat cover body one side is provided with drainage system 9, and this drainage system 9 is made of valve, can adopt ball valve or gate valve, when the leak pressure of sealed container is larger, can open drainage system 9 pressure release drainages.
Skirt is plane body or the arc body that adapts to wall of container to be sealed, adopt the skirt of plane body, because self has elasticity, also can be according to the shape distortion of wall of container to be sealed, skirt top is provided with the handle 10 of carry strap pressure sealing device, also can adopt suspension ring, handle and suspension ring all adopt non-magnetic material to make.
when this magnetic-type band pressure sealing device uses, can one by one permanent-magnetic switching be adjusted to state as shown in Figure 7, this moment, permanent-magnetic switching was minimum adsorption affinity state, can be with the running fix on wall of container easily of band pressure sealing device, perhaps utilize the instrument clickwise rotating shafts to 1/3 such as spanner, 1/2 position-limited trough 1-1 place, this moment, permanent-magnetic switching presented slightly large adsorption affinity, also the band pressure sealing device can be implemented running fix, after adjust the position, after utilizing 90 ° of instrument clickwise rotating shafts such as spanner, permanent-magnetic switching is adjusted to the strongest adsorption affinity state, complete fixing, during dismounting, 90 ° of left-hand revolution rotating shafts recover minimum adsorption affinity state, can carry out disassembling section.
Above describedly be construed as the utility model and be not limited to above embodiment just for the utility model is described, meet the various flexible form of the utility model thought all within protection domain of the present utility model.
Claims (10)
1. magnetic-type band pressure sealing device, described band pressure sealing device comprises seal closure, the sealing cover is provided with round hat cover body, the cover body edge of opening is with skirt, it is characterized in that, opening around seal closure in described skirt is provided with the permanent-magnetic switching that several can regulate the adsorption affinity size, be provided with permanent magnets in described permanent-magnetic switching, permanent magnets is provided with the control rotating shaft, the axial setting of the magnetic direction vertical rotation axis of permanent magnets, regulate the magnetic attraction of permanent-magnetic switching by rotating shaft, a skirt upper surface part is exposed in described rotating shaft, consist of and the throw section of matching, described band pressure sealing device also is provided with the magnetic conduction rubber gasket sheet, the magnetic conduction rubber gasket sheet covers the whole lower surface of described skirt and extends to a part in round hat cover body, this extension is wealthy mouthful of bottle-neck type, be close to round hat cover body inwall, be provided with magnetic gasket around the seal closure opening on magnetic conduction rubber gasket sheet lower surface.
2. magnetic-type band pressure sealing device as claimed in claim 1, it is characterized in that, described permanent-magnetic switching is provided with magnetic support, magnetic support is made of ferromagnetic material clamping non-magnetic material, non-magnetic material partly is positioned at the middle part of magnetic support vertical direction, partly is provided with the centre hole of vertical direction in the middle part of described magnetic support over against non-magnetic material, and described centre hole penetrates an end face of magnetic support at least, the hole wall of centre hole is made of ferromagnetic material and non-magnetic material, and same material is oppositely arranged; Be provided with rotatable stem stem in described centre hole, this stem stem is that permanent-magnet material is made, and the axis in the magnetic direction vertical centre hole of stem stem distributes, the magnetic field that can rotate in the horizontal direction stem stem; When the magnetic direction of stem stem during towards the ferromagnetic material part, the magnetic support rear magnetic attraction that is magnetized strengthens, and during towards the non-magnetic material part, the magnetic field of stem stem is by the magnetic that breaks when the magnetic direction of stem stem, and the magnetic attraction of magnetic support is weakened.
3. magnetic-type band pressure sealing device as claimed in claim 2, is characterized in that, in described magnetic support, the volume of ferromagnetic material part is greater than the non-magnetic material part, and two parts are integrally formed by welding.
4. magnetic-type band pressure sealing device as claimed in claim 2, is characterized in that, described magnetic support is arranged to cylinder or prism, or be the trapezoid body setting, and trapezoidal magnetic support is magnetized rear bottom adsorption affinity greater than top.
5. magnetic-type band pressure sealing device as claimed in claim 2, is characterized in that, described centre hole is circular hole, and the upper rim of centre hole is provided with the position-limited trough of the described stem stem anglec of rotation of restriction; Described stem stem is cylindrical or prismatic, and stem stem top is provided with the rotating shaft of rotation stem stem, and during the stem stem rotation, surrounding does not contact hole wall.
6. magnetic-type band pressure sealing device as claimed in claim 5, it is characterized in that, described rotating shaft is made of two parts, made by ferromagnetic material with the stem stem linkage section, the lower end is provided with flange radially, and diameter and the center-hole diameter of flange are suitable, flange one side is provided with the inhibiting device that adapts to described position-limited trough, made by non-magnetic material with the instrument section of matching, this section is arranged to prismatic, is provided with the groove of indication stem stem magnetic direction on end face.
7. magnetic-type band pressure sealing device as claimed in claim 2, is characterized in that, any that the material employing Al-Ni-Co series permanent-magnet alloy of described stem stem, siderochrome cobalt are permanent-magnet alloy, permanent-magnet ferrite, rare earth permanent-magnetic material or composite permanent-magnetic material.
8. magnetic-type band pressure sealing device as claimed in claim 2, is characterized in that, described centre hole is blind hole, and the upper surface that penetrates magnetic support arranges, and the magnetic support bottom is provided with the open-work of dismounting stem stem over against centre hole.
9. magnetic-type band pressure sealing device as claimed in claim 1, is characterized in that, described round hat cover body one side is provided with drainage system, and this drainage system is made of valve.
10. magnetic-type band pressure sealing device as claimed in claim 1, is characterized in that, described skirt is plane body or the arc body that adapts to wall of container to be sealed, and skirt top is provided with handle or the suspension ring of carry strap pressure sealing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636723 CN202935809U (en) | 2012-11-28 | 2012-11-28 | Magnetic attracting type pressurized sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636723 CN202935809U (en) | 2012-11-28 | 2012-11-28 | Magnetic attracting type pressurized sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202935809U true CN202935809U (en) | 2013-05-15 |
Family
ID=48320062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220636723 Withdrawn - After Issue CN202935809U (en) | 2012-11-28 | 2012-11-28 | Magnetic attracting type pressurized sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202935809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963637A (en) * | 2012-11-28 | 2013-03-13 | 天津市江达扬升工程技术有限公司 | Magnetic type pressure seal device |
-
2012
- 2012-11-28 CN CN 201220636723 patent/CN202935809U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102963637A (en) * | 2012-11-28 | 2013-03-13 | 天津市江达扬升工程技术有限公司 | Magnetic type pressure seal device |
| CN102963637B (en) * | 2012-11-28 | 2015-01-14 | 天津市江达扬升工程技术有限公司 | Magnetic type pressure seal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130515 Effective date of abandoning: 20150114 |
|
| RGAV | Abandon patent right to avoid regrant |