CN201429319Y - Vacuum melting device - Google Patents
Vacuum melting device Download PDFInfo
- Publication number
- CN201429319Y CN201429319Y CN2009201352591U CN200920135259U CN201429319Y CN 201429319 Y CN201429319 Y CN 201429319Y CN 2009201352591 U CN2009201352591 U CN 2009201352591U CN 200920135259 U CN200920135259 U CN 200920135259U CN 201429319 Y CN201429319 Y CN 201429319Y
- Authority
- CN
- China
- Prior art keywords
- outside
- working chamber
- electrode
- electrodes
- sealing plate
- Prior art date
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Furnace Details (AREA)
Abstract
The utility model provides a vacuum melting device, which comprises a melting chamber, two electrodes, a crucible, an induction coil and a sealing part, wherein the induction coil is wound on the outer wall of the crucible; a blanking port is arranged below the melting chamber right corresponding to the crucible; an air hole is arranged on the melting chamber; two ends of the induction coil are electrically connected with the two electrodes which are respectively connected with a positive pole and a negative pole of an external power source; a mounting hole is arranged on the melting chamber;two electrodes are disposed inside the mounting hole; the sealing part is in sealing connection with the melting chamber and capable of rotating correspondingly to the melting chamber; the two electrodes individually penetrate through the sealing part and parallelly extend to the outside from the inside of the melting chamber. By adopting parallel electrode structure and respectively fixing the two electrodes on the sealing part, the vacuum melting device drives the sealing part and the electrodes to move integrally under the action of external forces, thereby realizing overturning blanking ofthe crucible and having simple structure; the sealing part is arranged inside the mounting hole on the melting chamber and in sealing connection with the melting chamber, thereby ensuring excellent sealing performance of the vacuum melting device.
Description
Technical field
The utility model relates to field of metallurgical equipment, particularly a kind of vacuum melting equipment.
Background technology
Novel metal and alloy with excellent physics, chemistry, mechanical property and precise forming are the critical materials that supports new and high technologies such as following precision optical machinery, information, Aero-Space device, national defense industry.Yet the preparation condition of most novel metals and alloy requires harsh, as high-end Ti alloy, and the Mg alloy, the performance of non-crystaline amorphous metal etc. just requires its melting, blanking and forming process to carry out under vacuum condition all the time to the oxygen content sensitivity.
Crucible in the vacuum melting equipment generally adopts high frequency electric source to heat at present, and crucible needs whole upset blanking after having melted material.But the upset discharged way is difficult to guarantee the realization of high vacuum in the fusion process.
Disclose a kind of vacuum melting equipment in the prior art, comprised vacuum chamber and electrode, had the electrode port on the sidewall of this vacuum chamber,, this electrode adopts coaxial configuration, promptly anodal and negative pole are that the concentric circles pipe box of different size closes and forms.This coaxial electrode is connected with vacuum chamber by the electrode port, and adopts a plurality of sealing rings and gland to realize sealing.There is many places sealings in the coaxial electrode structure, and for example sealing of sealing, outer concentric pipe and the vacuum-chamber wall between two concentric pipes etc. makes the complex structure of last vacuum chamber, and expends the cost height.
The utility model content
The purpose of this utility model is to overcome existing vacuum chamber and is difficult to sealing, baroque problem, proposes a kind of good airproof performance, vacuum melting equipment simple in structure.
A kind of vacuum melting equipment that the utility model provides comprises working chamber, two electrodes, crucibles and is wound in the induction coil of crucible outer wall; The working chamber is right against the crucible below and is provided with blanking port, and the working chamber is provided with pore; The two ends of induction coil are electrically connected with two electrodes, and two electrodes are connected with the both positive and negative polarity of external power supply respectively;
Offer an installing hole in the described working chamber, be provided with two electrodes in the installing hole; Also comprise seal, sealing part and melting locular wall be airtight to be connected and can to rotate with respect to the melting locular wall; Two electrodes are arranged on the seal independently of one another, and two electrodes extend in parallel the outside from the inside of working chamber.
A kind of vacuum melting equipment that the utility model provides also comprises the screw rod and the nut that are used to connect and/or clamp inner seal plate and outside sealing plate; The screw rod that is arranged on inner seal plate and the outside sealing plate cooperates with outside sealing plate nut outward.
A kind of vacuum melting equipment that the utility model provides also comprises the electrode locking member, and described electrode locking member is used for regulating outside sealing plate and melting locular wall relative position; Described electrode locking member is positioned at outside the working chamber; The electrode locking member is sheathed on the electrode and with outside sealing plate and links to each other.
A kind of vacuum melting equipment that the utility model provides also comprises at least five sealing rings; A sealing ring is arranged between melting locular wall and the inner seal plate, and two sealing rings are arranged between electrode and the inner seal plate, and two sealing rings are arranged between screw rod and the inner seal plate in addition.
A kind of vacuum melting equipment that the utility model provides also comprises liquid coolant sources; Described induction coil and two tubular metal structures that electrode is a hollow; An electrode is connected with liquid coolant sources, and cooling fluid can enter induction coil inside by the hollow tubular structure of electrode, and flows out from another electrode.
Vacuum melting equipment of the present utility model, owing to adopt parallel electrode structure, two electrodes are separately fixed on the seal, the external force effect drives seal and electrode mass motion down, thereby realizes crucible upset blanking.In the utility model, seal is arranged in the installing hole in the working chamber, and is connected with the melting locular wall is airtight, guarantees that the sealing of vacuum melting equipment is good; The utility model vacuum melting equipment adopts parallel electrode structure, and two electrodes pass seal respectively and extend to the outside, working chamber abreast in the working chamber, are connected with the both positive and negative polarity of external power supply; After melting is finished, make seal with respect to the rotation of melting locular wall under the external force effect, can realize crucible upset blanking thereby drive the electrode rotation, structure is very simple.
Description of drawings
In conjunction with the embodiments the utility model is described in further detail with reference to the accompanying drawings:
Fig. 1 is the structural representation of the utility model vacuum melting equipment.
Fig. 2 is the electrode structure schematic diagram of the utility model first embodiment vacuum melting equipment.
Fig. 3 is the structural representation of the utility model first embodiment outside sealing plate.
Fig. 4 is the A-A section effect schematic diagram of Fig. 3.
Fig. 5 is the structural representation of the utility model first embodiment inner seal plate.
Fig. 6 is the B-B section effect schematic diagram of Fig. 5.
Fig. 7 is the electrode structure schematic diagram of the utility model second embodiment vacuum melting equipment.
The specific embodiment
In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that the specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figure 1, the vacuum melting equipment of the utility model first embodiment comprises working chamber, electrode 3, crucible 15 and is wound in the induction coil 13 of crucible 15 outer walls; The working chamber is provided with a blanking port 16 over against crucible 15 belows, and the working chamber is provided with pore 17; The two ends of induction coil 13 are electrically connected with two electrodes 3 by Coupling 12.Described Coupling 12 is a hollow metal pipeline that the two ends size is different, and the one end is connected with electrode 3, the size coupling of the size of this end and electrode 3; The other end is connected with induction coil 13, the size coupling of the size of this end and induction coil 13.
Vacuum melting equipment of the present utility model also comprises liquid coolant sources.Induction coil 13 and two electrodes 3 can be the tubular metal structure of hollow; One of them electrode is connected with liquid coolant sources, cooling fluid can enter by the hollow tubular structure of this electrode in the Coupling 12, enter metal induction coil 13 inside then, enter the Coupling that links to each other with the other end of induction coil 13 then, flow out or flow back to liquid coolant sources from another electrode at last.
Offer an installing hole on the melting locular wall 9, be provided with two electrodes 3 in the installing hole; Also comprise a seal, sealing part and 9 airtight connections of melting locular wall; With the direction perpendicular to installing hole is rotating shaft, and the sealing part can be that central shaft is with respect to 9 rotations of melting locular wall with this rotating shaft.Two electrodes 3 pass seal respectively, extend in parallel the outside from the inside of working chamber.
As shown in Figure 2, seal is made of inner seal plate 10 and outside sealing plate 7.Inner seal plate 10 is positioned at the working chamber, links to each other with melting locular wall 9; Outside sealing plate 7 is positioned at outside the working chamber, has boss 70 on the outside sealing plate 7, and boss 70 is installed in the installing hole of melting locular wall 9, and cooperates with inner seal plate 10.
As shown in Figure 3, Figure 4, outside sealing plate 7 is the convex plate with 4 through holes, wherein 2 first installing hole 71 and second installing holes 72 that lead to right circular hole as two electrodes 3; The size of described first installing hole 71 and second installing hole 72 and the size of two electrodes 3 coupling; In addition 2 through holes are as the 3rd installing hole 73 and the 4th installing hole 74 of screw rod 4, and the size of described the 3rd installing hole 73 and the 4th installing hole 74 and the size of screw rod 4 are mated.Has boss 70 on the sealing plate 7 of the outside; Boss 70 is installed in the installing hole on the melting locular wall 9, and the size of boss 70 makes it cooperate with installing hole on the melting locular wall 9 and gets final product.The thickness of outside sealing plate 7 convex platforms 70 is more than or equal to the thickness of melting locular wall 9.The upper surface of outside sealing plate 7 is a platform, as shown in Figure 2, and two non-through holes is arranged on platform, as first threaded connection hole 141 and second threaded connection hole 142 that rotary arm is installed.
As Fig. 5, shown in Figure 6, inner seal plate 10 is for having the flat board of four step circular holes, the size of inner seal plate 10 is greater than the size of outside sealing plate 7 convex platforms 70, make inner seal plate 10 and outside sealing plate 7 melting locular wall 9 can be clipped in the middle, the three closely links to each other, and guarantees the vacuum of working chamber.In 4 step circular holes on the inner seal plate 10, wherein 2 relative step circular holes are as the 5th installing hole 101 and the 6th installing hole 102 of two electrodes 3; The consistent size of first installing hole 71, second installing hole 72 on the size of described the 5th installing hole 101 and the 6th installing hole 102 and the outside sealing plate 7 is all mated with the size of two electrodes 3.On the inner seal plate 10 in addition 2 step circular holes as the 7th installing hole 103 and the 8th installing hole 104 of screw rod 4; The consistent size of the 3rd installing hole 73, the 4th installing hole 74 on the size of described the 7th installing hole 103 and the 8th installing hole 104 and the outside sealing plate 7 is all mated with the size of screw rod 4.
As shown in Figure 2, electrode 3 passes the 5th installing hole 101 on the inner seal plate 10 and first installing hole 71 on the outside sealing plate 7 successively, extends to outside the working chamber; Another electrode 3 passes the 6th installing hole 102 on the inner seal plate 10 and second installing hole 72 on the outside sealing plate 7 successively, extends to outside the working chamber.Screw rod 4 passes the 7th installing hole 103 on the inner seal plate 10 and the 3rd installing hole 73 on the outside sealing plate 7 successively, extends to outside the working chamber; Another screw rod 4 passes the 8th installing hole 104 on the inner seal plate 10 and the 4th installing hole 74 on the outside sealing plate 7 successively, extends to outside the working chamber.
The 5th installing hole 101, the 6th installing hole 102, the 7th installing hole 103 and place, the 8th installing hole 104 holes are provided with sealing ring 11 on the inner seal plate 10; Static pressure machinery sealing by sealing ring 11 makes the favorable sealing property of two electrodes 3 and inner seal plate 10.
The material of the outside sealing plate 7 and inner seal plate 10 can be identical, for example can adopt smooth surface such as bakelite, polytetrafluoroethylene (PTFE) and be difficult for the vacuum insulation of attached gas.
Two electrode 3 parallel installations, its distance of shaft centers are from preferably being not less than 40mm, and electrode is burnt in glow discharge when preventing to connect high frequency electric source because of distance is too for a short time.More preferably under the situation, can be at electrode 3 outside coated insulation adhesive plasters.
As shown in Figure 2, also be arranged with electrode locking member 2 and pad 1 on the electrode outside extending the working chamber 3.Electrode locking member 2 can be along the screw thread rotation of electrode 3 outer surfaces, and is used to regulate the relative position of outside sealing plate 7 and melting locular wall 9.Pad 1 is stuck between electrode locking member 2 and the outside sealing plate 7, is used for the pressure of even dispersive electrode locking member 2.Tighten electrode locking member 2, pad 1 evenly on whole outside sealing plate 7, further pushes inner seal plate 10 to pressure, and routine sealing plate 10 is out of shape with two sealing rings 11 between the electrode 3 in causing; By the distortion of sealing ring 11, make electrode 3 combine closely with outside sealing plate 7, prevent that the working chamber from revealing.Simultaneously, electrode 3 is fixed on inner seal plate 10 and the outside sealing plate 7 better.
As shown in Figure 2, the outside of outside sealing plate 7 is provided with nut 5.Screw rod 4 passes inner seal plate 10 and outside sealing plate 7, cooperates with nut 5.Between nut 5 and outside sealing plate 7, be provided with pad 6.The effect of pad 6 is identical with the effect of pad 1.Similarly, by tightening nut 5, pad 6 evenly disperses the pressure of nut 5, makes two sealing rings 11 between inner seal plate 10 and the screw rod 4 produce distortion at last, make outside sealing plate 7, melting locular wall 9 and inner seal plate 10 in conjunction with closely, prevent that the working chamber from revealing.
As shown in Figure 2, on the contact-making surface of inner seal plate 10 and melting locular wall 9, also be provided with sealing ring 8.Sealing ring 8 is arranged in the groove on the melting locular wall 9, links to each other with melting locular wall 9 and inner seal plate 10.Adjusting by electrode locking member 2 and nut 5, when electrode 3, outside sealing plate 7 rotate with respect to melting locular wall 9 with inner seal plate 10 integral body, sealing ring 8 is squeezed, form a movable sealing herein, can guarantee that electrode 3 drives the excellent sealing of working chamber in crucible 15 switching processes, prevent that the working chamber from revealing.
Similarly, also sealing ring can be set between side seal plate 7 and the melting locular wall 9 outside, its action principle and sealing ring 8 effects are similar, do not give unnecessary details herein.
The material of sealing ring 8 and sealing ring 11 can be identical, all can adopt various sealing rings commonly used in the prior art, for example can be fluorubber, polyethylene, synthetic rubber and natural rubber, the preferred fluorubber that adopts in the utility model.More preferably under the situation, sealing ring 8 adopts star-like sealing ring, for example can adopt Q237; Sealing ring 11 adopts the O RunddichtringO, and its size is selected as required.In the utility model, the sealing ring 11 preferred O RunddichtringOs that adopt ф 20 * 1.6.
As shown in Figure 1, outside the working chamber, also be provided with rotary arm 14.Rotary arm 14 is fixed on the sealing plate 7 of the outside by screw.As shown in Figure 2, by being installed in first screwed hole 141 and 142 two screws of second screwed hole respectively, rotary arm 14 is fixedly connected on the sealing plate 7 of the outside.Under the external force effect, rotary arm 14 motions, driving outside sealing plate 7, electrode 3 and inner seal plate 10 integral body is that central shaft rotates with respect to melting locular wall 9 with the direction perpendicular to installing hole, realizes the purpose of crucible 15 Tiltings.
As shown in Figure 1, the working chamber is provided with pore 17, and pore 17 can be used to install inner vaccum-pumping equipment, the perhaps equipment of inner logical inert gas toward the working chamber with the working chamber; Under the preferable case, also can connect on pore 17 and connect mouth one more, one of them interface links to each other with pore 17, and other interfaces are used for linking to each other with the equipment such as vacuum, venting or inflation that vacuumize, measure in the working chamber.
As shown in Figure 7, the vacuum melting equipment of the utility model second embodiment and first embodiment's is similar, the difference of itself and first embodiment is also to be provided with bearing and malthoid 19 on the boss 70 on the side seal plate 7 outside, and the thickness of outside sealing plate 7 convex platforms 70 is greater than the thickness of melting locular wall 9.Bearing can adopt the various bearings that can bear axial force again can bearing radial force of the prior art, the preferred angular contact ball bearing that adopts in the utility model.
As shown in Figure 7, around the boss 70 outside angular contact ball bearing 18 is sheathed on the sealing plate 7, bearing inner race links to each other with the boss 70 of outside sealing plate 7, and outer race links to each other with the inwall of installing hole.By finding that to whole force analysis electrode locking member 2 all is discharged on the angular contact ball bearing 18 with the pressure of nut 5; And angular contact bearing 18 itself rotates flexibly, can effectively reduce the friction between outside sealing plate 7 and the melting locular wall 9, makes that outside sealing plate 7, inner seal plate 10 and electrode 3 integral body are more flexible with respect to the motion of melting locular wall 9.Malthoid 19 is enclosed within on the boss 70 of outside sealing plate 7, is stuck between outside sealing plate 7 and the melting locular wall 9, and effectively blocks dust enters in the working chamber.
Vacuum melting equipment of the present utility model in use will be noted the elasticity of electrode locking member 2, nut 5, and Tai Songyi causes seal pressure not enough, and the working chamber reveals; Too tightly make seal relative with the mass motion of electrode 3 difficult, the pretightning force that preferable case is issued to electrode locking member 2, nut 5 gets final product; In addition, the deformation extent of the sealing ring 8 between melting locular wall 9 and the inner seal plate 10 can be controlled by the size of adjusting outside sealing plate 7 convex platforms 70, and the size of preferable case lower convex platform 70 makes that the deformation extent of sealing ring 8 is 25%-30% the best.
Vacuum melting equipment of the present utility model, seal are installed in the installing hole in the working chamber, and closely link to each other with the melting locular wall, guarantee the excellent sealing of vacuum melting equipment.Under the preferable case,, can further guarantee the sealing of working chamber by the static seal of four sealing rings 11 and the movable sealing of the sealing ring 8 between melting locular wall 9 and the inner seal plate on 10 on the inner seal plate.
In addition, four static seals are sealing ring 11 and the effect that movable sealing is a sealing ring 8 in the utility model, the simple way that cooperates the pressure distortion sealing, easy accessibility, and movable sealing does not adopt traditional JO to enclose the complicated situation of pressure cuffs in the utility model, does not have to adopt the radial direction seal ring flute profile gesture that is difficult to install yet, and overall structure is simple, and need not use expensive encapsulant, saved great amount of cost.
Claims (8)
1, a kind of vacuum melting equipment comprises working chamber, two electrodes, crucibles and is wound in induction coil on the crucible outer wall; The working chamber is right against the crucible below and is provided with blanking port, and the working chamber is provided with pore; The two ends of induction coil are electrically connected with two electrodes, and two electrodes are connected with the both positive and negative polarity of external power supply respectively;
It is characterized in that: offer an installing hole in the working chamber, be provided with two electrodes in the installing hole; Also comprise seal, sealing part and melting locular wall be airtight to be connected and can to rotate with respect to the melting locular wall; Two electrodes are arranged on the seal independently of one another, and two electrodes extend in parallel the outside from the inside of working chamber.
2, vacuum melting equipment according to claim 1 is characterized in that: described seal comprises inner seal plate and outside sealing plate, and the inner seal plate is positioned at the working chamber, links to each other with working chamber's inwall; Outside sealing plate is positioned at outside the working chamber, and has boss on the sealing plate of the outside, and described boss is located in the installing hole in the working chamber, cooperates with the inner seal plate.
3, vacuum melting equipment according to claim 2 is characterized in that: also comprise the screw rod and the nut that are used to connect and/or clamp inner seal plate and outside sealing plate; The screw rod that is arranged on inner seal plate and the outside sealing plate cooperates with outside sealing plate nut outward.
4, vacuum melting equipment according to claim 2 is characterized in that: also comprise the electrode locking member, described electrode locking member is used for regulating outside sealing plate and melting locular wall relative position; Described electrode locking member is positioned at outside the working chamber; The electrode locking member is sheathed on the electrode and with outside sealing plate and links to each other.
5, vacuum melting equipment according to claim 3 is characterized in that: also comprise five sealing rings at least; A sealing ring is arranged between melting locular wall and the inner seal plate, and two sealing rings are arranged between electrode and the inner seal plate, and two sealing rings are arranged between screw rod and the inner seal plate in addition.
6, vacuum melting equipment according to claim 1 is characterized in that: also comprise liquid coolant sources; Described induction coil and two tubular metal structures that electrode is a hollow; An electrode is connected with liquid coolant sources, and cooling fluid can enter induction coil inside by the hollow tubular structure of electrode, and flows out from another electrode.
7, vacuum melting equipment according to claim 2 is characterized in that: also be provided with rotary arm on the outside sealing plate outside the working chamber.
8, vacuum melting equipment according to claim 2 is characterized in that: angular contact ball bearing is sheathed on the boss of outside sealing plate, and bearing inner race links to each other with boss on the sealing plate of the outside, and outer race links to each other with the inwall of installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201352591U CN201429319Y (en) | 2009-02-27 | 2009-02-27 | Vacuum melting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201352591U CN201429319Y (en) | 2009-02-27 | 2009-02-27 | Vacuum melting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201429319Y true CN201429319Y (en) | 2010-03-24 |
Family
ID=42033058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201352591U Expired - Lifetime CN201429319Y (en) | 2009-02-27 | 2009-02-27 | Vacuum melting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201429319Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091881A1 (en) * | 2011-12-23 | 2013-06-27 | Sms Mevac Gmbh | Device for supplying energy to melting furnaces |
| CN104896924A (en) * | 2015-03-25 | 2015-09-09 | 池州市华兴天骑精密机械铸造有限公司 | A casting smelting device |
| CN106493338A (en) * | 2016-12-28 | 2017-03-15 | 张斌 | Metal die-casting machine and its water-cooling coaxial electrode |
| CN106959010A (en) * | 2017-05-11 | 2017-07-18 | 宋佳 | One kind rotation melt component and smelting apparatus |
| CN112797788A (en) * | 2020-12-30 | 2021-05-14 | 江苏三环奥纳科技有限公司 | Smelting device applied to nanocrystalline magnetically soft alloy material |
-
2009
- 2009-02-27 CN CN2009201352591U patent/CN201429319Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091881A1 (en) * | 2011-12-23 | 2013-06-27 | Sms Mevac Gmbh | Device for supplying energy to melting furnaces |
| RU2635497C2 (en) * | 2011-12-23 | 2017-11-13 | Смс Мевак Гмбх | Device for electric supply of melting furnaces |
| CN104896924A (en) * | 2015-03-25 | 2015-09-09 | 池州市华兴天骑精密机械铸造有限公司 | A casting smelting device |
| CN104896924B (en) * | 2015-03-25 | 2019-04-09 | 东至县文元瓷砖加工厂 | A kind of casting smelting device |
| CN106493338A (en) * | 2016-12-28 | 2017-03-15 | 张斌 | Metal die-casting machine and its water-cooling coaxial electrode |
| CN106493338B (en) * | 2016-12-28 | 2019-03-08 | 张斌 | Metal die-casting machine and its water-cooling coaxial electrode |
| CN106959010A (en) * | 2017-05-11 | 2017-07-18 | 宋佳 | One kind rotation melt component and smelting apparatus |
| CN112797788A (en) * | 2020-12-30 | 2021-05-14 | 江苏三环奥纳科技有限公司 | Smelting device applied to nanocrystalline magnetically soft alloy material |
| CN112797788B (en) * | 2020-12-30 | 2021-12-07 | 江苏三环奥纳科技有限公司 | Smelting device applied to nanocrystalline magnetically soft alloy material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201429319Y (en) | Vacuum melting device | |
| CN200943707Y (en) | High temperature magnetic liquid seal water-cooling device | |
| CN201096207Y (en) | Holder type handle-possessing ball valve | |
| CN100451408C (en) | Encapsulated rotary valve | |
| CN206001953U (en) | Single tube sheet heat exchanger | |
| CN203757116U (en) | Proportional valve | |
| CN202746637U (en) | Ball valve | |
| CN211423490U (en) | Cooling gas valve device used in supergravity environment | |
| CN105570481A (en) | Moving and static conversion device for high-pressure gas path | |
| CN205745317U (en) | A kind of power plant three-way control valve | |
| CN112696500A (en) | Levelness adjusting and sealing device and furnace cover | |
| CN201567889U (en) | Cavity body hinge device and sealed cavity body mechanism with the device | |
| CN206398083U (en) | A kind of rotation shaft seal and sealing device | |
| CN201025304Y (en) | Sealing device for below roller of electrolysis copper and foil surface processor liquid | |
| CN215371550U (en) | Hydraulic pipeline for hydraulic engineering | |
| CN212868929U (en) | Movable rotary elbow of fluid equipment and connecting mechanism and movable mechanism thereof | |
| CN205350395U (en) | High pressure gas circuit sound conversion equipment | |
| CN207437781U (en) | A kind of magnetic fluid seal device mounting structure | |
| CN203602651U (en) | Converter trunnion bearing sealing device | |
| CN210687060U (en) | Flange type ball valve with sealing ring gasket on flange surface | |
| CN204573293U (en) | With the ball valve of integral support gland | |
| CN214662199U (en) | Same-core ball valve | |
| CN212288617U (en) | Sealing device of screw extruder | |
| CN221806090U (en) | Large-current small-volume liquid slip ring | |
| CN111720544B (en) | Anti-leakage gas pipeline rubber ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100324 |
|
| CX01 | Expiry of patent term |