CN114183539B - Magnetic force driving type vacuum drawing valve - Google Patents
Magnetic force driving type vacuum drawing valve Download PDFInfo
- Publication number
- CN114183539B CN114183539B CN202111436650.7A CN202111436650A CN114183539B CN 114183539 B CN114183539 B CN 114183539B CN 202111436650 A CN202111436650 A CN 202111436650A CN 114183539 B CN114183539 B CN 114183539B
- Authority
- CN
- China
- Prior art keywords
- piece
- tripping
- rod
- quick connector
- sleeve
- 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.)
- Active
Links
- 230000000670 limiting effect Effects 0.000 claims abstract description 102
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 17
- 210000001503 joint Anatomy 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000009351 contact transmission Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
- F16K51/02—Other details not peculiar to particular types of valves or cut-off apparatus specially adapted for high-vacuum installations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention belongs to the field of vacuum valves, and discloses a magnetic force driven vacuum drawing valve which comprises a cylinder body, a main magnetic force wheel assembly, a secondary magnetic force wheel assembly, a screw rod assembly, a quick connector, a tripping assembly, a drawing rod and a resetting piece. In an initial state, the tripping sleeve is positioned above the limiting mechanism, the limiting part supports the reset piece, the reset piece lifts the limiting mechanism upwards to release the clamping connection with the inner wall of the cylinder and release the pressure on the tripping piece, the tripping piece leaves the quick connector, and the pull rod stretches into the quick connector to be locked with the quick connector so as to open the vacuum plug; in the release state, the release sleeve drives the pull rod and the vacuum plug to move downwards until the vacuum plug is inserted into the evacuation port of the equipment again, the main magnetic wheel assembly is continuously rotated, the pull rod is static, the screw nut drives the release sleeve to continuously press down the limiting mechanism, the limiting mechanism is clamped with the inner wall of the cylinder, and the limiting mechanism presses down the release piece, so that the release piece is tightly pressed against the quick connector, and the pull rod is separable from the quick connector. The invention achieves zero leakage during opening and closing of the vacuum plug.
Description
Technical Field
The invention relates to the field of vacuum valves, in particular to a magnetic force driving type vacuum drawing valve.
Background
When the equipment is vacuumized, the equipment vacuumizing port needs to be opened, and after vacuumizing is completed, the equipment vacuumizing port needs to be closed for sealing, and the mechanical drawing valve is adopted to realize the opening and closing of the equipment vacuumizing port.
At present, a common mechanical pull valve in the market adopts a radial sealing structure for the evacuation pull rod and the valve seat. The opening and closing of the evacuation port of the apparatus and the tightening and loosening of the vacuum plug of the evacuation port are achieved by pulling and rotating the pull rod. The pull valve adopting such a structure has the following adverse effects due to the limitation of the sealing structure:
First, opening and closing the equipment evacuation ports requires pulling up and down the pressure pull rod, and tightening and loosening the vacuum plug requires rotating the evacuation pull rod. The above operation causes relative movement of the evacuation rod and the valve seat, so that a certain vacuum leakage is generated, and the adverse effect of the leakage is more remarkable particularly in the case of a high vacuum degree.
Secondly, the vacuum plug is screwed up and loosened and both need to rotate the evacuation pull rod, and the vacuum plug and the evacuation port of the device are in radial sealing structures, if the friction force between the evacuation port of the device and the vacuum plug is small, the vacuum plug can be caused to 'follow rotation' when the evacuation pull rod is rotated, certain leakage is generated, in order to increase the friction force, a pump connection port is often required to be opened to increase the friction force by depending on the atmospheric pressure, but the damage is larger if 'follow rotation' is generated at the moment. The "heel-turn" phenomenon is also more pronounced as the smaller the vacuum plug gauge, the smaller the friction is relative.
Thirdly, due to the limitation of the structure, the vacuum plug is generally difficult to loosen in a vacuum state, and the vacuum plug is operated in a non-vacuum state, so that once the vacuum plug is mistakenly leaked, the vacuum degree is easily deteriorated, and even the vacuum plug is broken.
Disclosure of Invention
The invention aims to provide a magnetic force driven vacuum drawing valve which realizes zero leakage in the process of opening and closing a vacuum plug.
The technical scheme provided by the invention is as follows:
A magnetically actuated vacuum pull valve comprising:
the top of the cylinder is closed, and the bottom of the cylinder is used for being connected with an equipment evacuation port in a sealing way;
the main magnetic wheel assembly is arranged outside the top of the cylinder body;
the slave magnetic wheel assembly is arranged in the cylinder body and corresponds to the main magnetic wheel assembly, and the main magnetic wheel assembly is rotated to drive the slave magnetic wheel assembly to rotate;
The screw rod assembly comprises a screw rod and a screw rod nut, the screw rod is fixedly connected with the slave magnetic wheel assembly, the screw rod nut is in threaded connection with the screw rod, and the screw rod assembly is driven by the master magnetic wheel assembly and the slave magnetic wheel assembly;
The quick connector is arranged at the bottom of the cylinder body, and one end of the quick connector extends out of the cylinder body and is used for being connected with a vacuum plug arranged at an evacuation port of the equipment;
The tripping assembly comprises a tripping sleeve, a limiting mechanism and a tripping piece, wherein the tripping sleeve is fixedly connected with the screw rod nut and is in sliding connection with the inner wall of the cylinder body, the limiting mechanism is movably arranged on the inner wall of the cylinder body and can be clamped with the cylinder body, and the tripping piece is arranged at the bottom of the limiting mechanism;
the pull rod is arranged in the release sleeve and can move axially relative to the release sleeve, and a limiting part is arranged at the bottom of the pull rod;
the resetting piece is movably sleeved outside the drawing rod, and the top of the resetting piece is positioned above the limiting part;
in an initial state, the release sleeve is positioned above the limiting mechanism, the limiting part supports the reset piece, the reset piece lifts the limiting mechanism upwards to release the clamping connection with the inner wall of the cylinder and release the pressure on the release piece, the release piece leaves the quick connector, and the pull rod stretches into the quick connector to be locked with the quick connector so as to open the vacuum plug;
The tripping state, the tripping sleeve drives pull rod and vacuum plug move down to vacuum plug insertion equipment evacuation mouth, continue to rotate main magnetic force wheel subassembly, the pull rod is static, lead screw nut drives the tripping sleeve continues to move down and pushes down stop gear, stop gear move down to with barrel inner wall joint, just stop gear pushes down the trip piece, makes the trip piece compresses tightly quick connector, the pull rod with quick connector detachable.
In some embodiments, the spacing between the main magnetomotive wheel assembly and the barrel is adjustable;
The tripping assembly further comprises a first spring, the first spring is arranged in the tripping sleeve and sleeved on the drawing rod, one end of the first spring is abutted to the top of the tripping sleeve, and the other end of the first spring is abutted to the drawing rod.
In some embodiments, the trip cover inner side wall is provided with a retainer ring, the outer side wall of the pull rod is provided with a protruding portion, the protruding portion is arranged on the retainer ring, and the first spring is located between the trip cover top and the protruding portion.
In some embodiments, the limiting mechanism comprises a sliding sleeve and an elastic limiting piece, the sliding sleeve is movably arranged on the inner side wall of the barrel, a clamping groove is formed in the inner side wall of the barrel, a through hole which is obliquely arranged is formed in the sliding sleeve, the elastic limiting piece is arranged in the through hole, and when the sliding sleeve moves to the position, corresponding to the clamping groove, of the elastic limiting piece, the elastic limiting piece stretches into the clamping groove to be clamped with the clamping groove;
the pull rod drives the reset piece to move upwards, so that the reset piece lifts the elastic limiting piece upwards, the elastic limiting piece releases the clamping connection with the clamping groove, the sliding sleeve releases the pressure on the trip piece, and the trip piece resets and leaves the quick connector.
In some embodiments, the through hole is a stepped hole, the stepped hole comprises a first stepped hole and a second stepped hole which are communicated, and the second stepped hole is arranged close to the inner wall of the barrel;
the elastic limiting piece comprises a second spring and a limiting rod, the limiting rod is arranged in the first stepped hole and the second stepped hole, one end of the limiting rod extends out of the first stepped hole, the second spring is sleeved on the limiting rod and located in the second stepped hole, one end of the second spring is in butt joint with the other end of the limiting rod, and the other end of the second spring is in butt joint with the second stepped hole.
In some embodiments, the stop bar includes a head portion and a stem portion, the head portion having a diameter greater than a diameter of the stem portion, the head portion extending out of the first stepped bore;
The bottom of the reset piece is provided with a hook part for hooking the head part.
In some embodiments, the cylinder comprises an upper cylinder body and a lower valve seat, the lower valve seat is in sealing connection with the bottom of the upper cylinder body, the lower valve seat is used for being in sealing connection with an evacuation port of equipment, the quick connector is arranged in the lower valve seat, the tripping piece is obliquely arranged on the side wall of the lower valve seat, one end, close to the quick connector, of the tripping piece when being pressed stretches out of the lower valve seat and compresses the quick connector, and the tripping piece is retracted into the lower valve seat when not being pressed.
In some embodiments, the bottom of the sliding sleeve is a bevel for pressing the trip member obliquely downward.
In some embodiments, the main magnetic wheel assembly comprises a mounting seat, a main bearing, a main rotating shaft and a main magnetic wheel, wherein the mounting seat is in threaded connection with the outer side wall of the cylinder body, the main bearing is arranged in the mounting seat, the main rotating shaft is arranged in the main bearing, one end of the main rotating shaft extends out of the mounting seat, and the main magnetic wheel is fixedly connected with the main rotating shaft.
In some embodiments, the slave magnetic wheel assembly includes a slave bearing disposed at a top portion within the cylinder, a slave rotating shaft disposed on the slave bearing, and a slave magnetic wheel fixedly connected to the slave rotating shaft and disposed in correspondence to the master magnetic wheel.
The invention has the technical effects that:
The opening and closing of the vacuum plug are realized through the axial movement of the drawing piece, the drawing piece does not need to be rotated, and further, the friction force between the vacuum plug and the evacuation port of the equipment does not need to be increased, so that the pump evacuation port does not need to be opened when the vacuum plug is opened, the vacuum environment in the drawing valve is maintained, and the occurrence of the breaking of the air is prevented; in addition, when the vacuum plug is opened and closed, magnetic non-contact transmission is adopted, no leakage is caused in the operation process, the internal vacuum degree is not influenced, and the whole vacuum operation does not generate leakage.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a cross-sectional view of a magnetically actuated vacuum extractor valve according to an embodiment of the present application in an initial state;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a cross-sectional view of a magnetically actuated vacuum pump valve according to an embodiment of the present application when the pump rod is moved down into engagement with the quick connector;
FIG. 4 is a cross-sectional view of a magnetically actuated vacuum pump valve according to an embodiment of the present application when a vacuum plug is opened by a pump rod;
FIG. 5 is a cross-sectional view of a magnetically driven vacuum pump valve according to an embodiment of the present application when the pump rod is disengaged from the quick connector;
fig. 6 is a cross-sectional view of a magnetically actuated vacuum pump valve according to an embodiment of the present application when the pump rod is separated from the vacuum plug.
Reference numerals illustrate:
1. an equipment evacuation port; 2. a vacuum plug;
10. a cylinder; 11. an upper cylinder; 12. a lower valve seat; 13. a clamping groove; 20. a main magnetic wheel assembly; 21. a mounting base; 22. a main bearing; 23. a main rotation shaft; 24. a main magnetic wheel; 30. a slave magnetic wheel assembly; 31. a slave bearing; 32. a slave rotation axis; 33. from the magnetic wheel; 40. a screw assembly; 41. a screw rod; 42. a screw nut; 50. a trip assembly; 51. removing the buckle sleeve; 511. a retainer ring; 52. a limiting mechanism; 521. a sliding sleeve; 522. an elastic limiting piece; 5221. a second spring; 5222. a limit rod; 53. removing the fastener; 54. a first spring; 60. a pull rod; 61. a limit part; 62. a protruding portion; 70. a reset member; 71. a hook portion; 80. and a quick connector.
Detailed Description
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In this context, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In one embodiment of the present application, as shown in fig. 1 and 2, a magnetically driven vacuum pull valve includes a cylinder 10, a master magnet wheel assembly 20, a slave magnet wheel assembly 30, a screw assembly 40, a trip assembly 50, a pull rod 60, a reset member 70, and a quick connector 80.
The top of the cylinder 10 is closed, and the bottom is used for being connected with the device evacuation port 1 in a sealing way. The cylinder 10 comprises an upper cylinder 11 and a lower valve seat 12, the lower valve seat 12 is in sealing connection with the bottom of the upper cylinder 11, the interior of the lower valve seat 12 is hollow, the lower valve seat 12 is used for being in sealing connection with the equipment evacuation port 1, the lower valve seat 12 can be in threaded connection with the side wall of the equipment evacuation port 1, and the bottom is sealed by a metal piece. The cylinder 10 is arranged in two parts, so that the installation of the internal components of the cylinder 10 can be facilitated, and after the installation of the internal components of the upper cylinder 11 is completed, the upper cylinder 11 and the lower valve seat 12 are welded together.
As shown in fig. 1, the main magnet wheel assembly 20 is disposed outside the top of the cylinder 10; the main magnetic wheel assembly 20 comprises a mounting seat 21, a main bearing 22, a main rotating shaft 23 and a main magnetic wheel 24, wherein the mounting seat 21 is in threaded connection with the outer side wall of the upper cylinder 11, the main bearing 22 is arranged in the mounting seat 21, the main rotating shaft 23 is arranged in the main bearing 22, one end of the main rotating shaft 23 extends out of the mounting seat 21, and the main magnetic wheel 24 is fixedly connected with the main rotating shaft 23.
The main rotating shaft 23 is arranged in the main bearing 22, the main rotating shaft 23 can rotate relative to the mounting seat 21, and the main rotating shaft 23 drives the main magnetic wheel 24 to rotate when rotating. The main rotating shaft 23 extends out of the mounting seat 21, so that an operator can conveniently rotate the main rotating shaft 23.
The slave magnetic wheel assembly 30 is arranged in the cylinder 10 and corresponds to the master magnetic wheel assembly 20, and the slave magnetic wheel assembly 30 is driven to rotate when the master magnetic wheel assembly 20 is rotated. As shown in fig. 1, the slave magnetic wheel assembly 30 includes a slave bearing 31, a slave rotation shaft 32, and a slave magnetic wheel 33, the slave bearing 31 being disposed at the top of the cylinder 10, the slave rotation shaft 32 being disposed on the slave bearing 31, the slave magnetic wheel 33 being fixedly connected with the slave rotation shaft 32 and being disposed corresponding to the master magnetic wheel 24.
When the main rotating shaft 23 is rotated, the main magnetic wheel 24 rotates along with the main rotating shaft 23, the main magnetic wheel 24 is arranged opposite to the auxiliary magnetic wheel 33, and when the main magnetic wheel 24 rotates, the auxiliary magnetic wheel 33 is driven to rotate under the action of magnetic force, and the auxiliary magnetic wheel 33 rotates to drive the auxiliary rotating shaft 32 to rotate.
As shown in fig. 1, the screw assembly 40 includes a screw 41 and a screw nut 42, the screw 41 is fixedly connected with the slave rotation shaft 32 of the slave magnetic wheel assembly 30, and the screw nut 42 is screw-connected with the screw 41; the screw 41 is driven to rotate when the rotation shaft 32 rotates, and the screw nut 42 is axially movable along the screw 41 when the screw 41 rotates.
The quick connector 80 is provided at the bottom of the cylinder 10, i.e., in the lower valve seat 12, and has one end extending out of the lower valve seat 12 for connection with the vacuum plug 2 provided at the evacuation port 1 of the apparatus. The quick connector 80 may be threadably coupled to the vacuum plug 2 to secure the quick connector 80 to the vacuum plug 2. The quick connector 80 is used for locking the pull rod 60, threads are arranged at the end part of the pull rod 60, a slotted diaphragm spring is arranged in the quick connector 80, the pull rod 60 presses down the slotted diaphragm spring, and the elastic sheet of the diaphragm spring stretches into the thread groove to lock the pull rod 60. In this embodiment, the quick connector 80 is a standard component, for example, it may be a pneumatic quick connector or a quick connector for a lock shaft, the quick connector 80 for a lock shaft changes the locking part inside from a diaphragm spring to a steel ball, and the locking pull rod 60 is realized by self-locking of the steel ball.
The trip assembly 50 comprises a trip sleeve 51, a limiting mechanism 52 and a trip piece 53, wherein the trip sleeve 51 is fixedly connected with the screw nut 42 and is in sliding connection with the inner wall of the upper cylinder 11, a sliding groove is formed in the inner wall of the upper cylinder 11, the top of the trip sleeve 51 is fixedly connected with the screw nut 42, the bottom of the trip sleeve 51 is movably arranged in the sliding groove, the sliding groove can limit the trip sleeve 51, and then the screw nut 42 is limited, so that the screw nut 42 can not move linearly along the axial direction of the screw 41 instead. The screw nut 42 drives the release sleeve 51 to lift together when lifted along the screw 41.
The limiting mechanism 52 is movably arranged on the inner wall of the cylinder 10 and can be clamped with the cylinder 10, and the tripping piece 53 is arranged at the bottom of the limiting mechanism 52. The limiting mechanism 52 is located below the trip sleeve 51, when the trip sleeve 51 moves downwards, the limiting mechanism 52 can be pressed down, the limiting mechanism 52 moves downwards along the inner wall of the barrel 10 and presses down the trip piece 53, the trip piece 53 also moves downwards and can press the quick connector 80, when the limiting mechanism 52 moves downwards to a preset position, the limiting mechanism 52 is clamped with the inner wall of the barrel 10, so that the limiting mechanism 52 is fixed, and at the moment, the trip piece 53 still presses the quick connector 80, so that the pull rod 60 and the quick connector 80 can be separated.
The drawing rod 60 is arranged in the trip sleeve 51 and can axially move relative to the trip sleeve 51, and the bottom of the drawing rod 60 is provided with a limit part 61; the pull rod 60 can be driven to move downwards together when the trip sleeve 51 moves downwards, the pull rod 60 moves downwards and stretches into the quick connector 80, the quick connector 80 locks the pull rod 60, the quick connector 80 is connected with the pull rod 60, the pull rod 60 can lift together with the quick connector 80 and the vacuum plug 2 when lifting, so that the vacuum plug 2 at the equipment evacuation port 1 can be opened, and at the moment, the equipment can be evacuated.
The resetting piece 70 is movably sleeved outside the drawing rod 60, and the top of the resetting piece 70 is positioned above the limiting part 61; the reset piece 70 is directly sleeved on the outer side of the pull rod 60, the reset piece 70 can axially move relative to the pull rod 60, and the limiting part 61 can limit the reset piece 70. When the pull rod 60 is lifted to the position where the limiting part 61 contacts with the top of the reset element 70 as shown in fig. 1, the pull rod 60 can drive the reset element 70 to lift together, when the pull rod 60 is lowered to the bottom of the reset element 70 to contact with the lower valve seat 12 as shown in fig. 3, the reset element 70 stops to descend under the support of the lower valve seat 12, and the pull rod 60 can continue to descend to extend into the quick connector 80. The reset piece 70 is movably connected with the drawing rod 60, so that the drawing rod 60 can have enough axial movement distance, and if the reset piece 70 is fixedly connected with the drawing rod 60, the movable stroke of the drawing rod 60 is smaller, and the opening of the vacuum plug 2 can not be realized.
As shown in fig. 1, in the initial state, the trip sleeve 51 is located above the limiting mechanism 52, the limiting part 61 supports the reset piece 70, the reset piece 70 lifts the limiting mechanism 52 upwards to release the clamping connection with the inner wall of the cylinder 10 and release the pressure on the trip piece 53, the trip piece 53 leaves the quick connector 80, and as shown in fig. 3 and 4, the pull rod 60 stretches into the quick connector 80 to lock the quick connector 80 and can open the vacuum plug 2;
As shown in fig. 5 and 6, in the tripped state, the trip sleeve 51 drives the pull rod 60 and the vacuum plug 2 to move downwards until the vacuum plug 2 is inserted into the device evacuation port 1, the main magnetic wheel assembly 20 continues to rotate, the pull rod 60 is static, the screw nut 42 drives the trip sleeve 51 to move downwards continuously to press the limiting mechanism 52, the limiting mechanism 52 moves downwards to be clamped with the inner wall of the cylinder 10, the limiting mechanism 52 presses the trip piece 53, and the trip piece 53 presses the quick connector 80, so that the pull rod 60 and the quick connector 80 can be separated.
The specific working process of the magnetic force driving type vacuum drawing valve in the embodiment is as follows:
As shown in fig. 1, when the vacuum plug 2 needs to be opened, the main rotating shaft 23 is rotated to drive the secondary rotating shaft 32 and the screw rod 41 to rotate, the screw rod 41 rotates to drive the screw rod nut 42, the trip sleeve 51 and the pull rod 60 to move downwards together, so that the pull rod 60 stretches into the quick connector 80 to be locked with the quick connector 80, as shown in fig. 4, the main rotating shaft 23 is rotated reversely, so that the pull rod 60 drives the quick connector 80 and the vacuum plug 2 to move upwards together, and the vacuum plug 2 leaves the device evacuation port 1 to open the device evacuation port 1, and at the moment, evacuation operation can be performed.
After the evacuation is completed, as shown in fig. 5, the main rotation shaft 23 is rotated, the pull rod 60 carries the quick connector 80 and the vacuum plug 2 to move downwards together, so that the quick connector 80 returns to the initial position, and the vacuum plug 2 is inserted into the evacuation port 1 of the device to seal the evacuation port 1 of the device, at this time, the main rotation shaft 23 is continuously rotated, the pull rod 60 cannot continuously descend under the limiting action of the quick connector 80 and the vacuum plug 2, but the trip sleeve 51 and the pull rod 60 can relatively move along the axial direction, the trip sleeve 51 continuously moves downwards under the action of the lead screw nut 42 and presses down the limiting mechanism 52, so that the limiting mechanism 52 moves downwards to press the trip piece 53, so that the trip piece 53 compresses the quick connector 80, and simultaneously, after the limiting mechanism 52 moves downwards to be clamped with the inner wall of the barrel 10, the limiting mechanism 52 can be kept at the position, so that the trip piece 53 continuously compresses the quick connector 80, at this time, the main rotation shaft 23 is reversely rotated so that the pull rod 60 can ascend, because the trip piece 53 compresses the quick connector 80, the trip piece 60 can be separated from the quick connector 80 under the action of the pull rod 60, and the vacuum plug 80 can not be evacuated together with the quick connector 80 under the action of the vacuum plug 1, and the vacuum plug 1 can not be evacuated. When the pull rod 60 rises to the limit part 61 to be in contact with the reset piece 70, the pull rod 60 drives the reset piece 70 to move upwards, and when the reset piece 70 moves upwards to the position where the limit mechanism 52 is clamped with the cylinder 10, the limit mechanism 52 can be lifted upwards to release the clamping of the limit mechanism 52 and the inner wall of the cylinder 10, at the moment, the limit mechanism 52 can rise to reset to release the downward pressure on the trip piece 53, so that the trip piece 53 leaves the quick connector 80, the limit mechanism 52 and the trip piece 53 are restored to the initial state, and the next opening and closing of the vacuum plug 2 can be performed.
In some embodiments, as shown in FIGS. 1 and 5, the spacing between the main magnet wheel assembly 20 and the barrel 10 is adjustable. The trip assembly 50 further includes a first spring 54, where the first spring 54 is disposed in the trip sleeve 51 and sleeved on the pull rod 60, and one end of the first spring 54 abuts against the top of the trip sleeve 51, and the other end abuts against the pull rod 60. Specifically, the inner side wall of the trip sleeve 51 is provided with a retainer 511, the outer side wall of the pull rod 60 is provided with a protruding portion 62, the protruding portion 62 is arranged on the retainer 511, and the first spring 54 is located between the top of the trip sleeve 51 and the protruding portion 62. The retainer 511 and the protrusion 62 cooperate to support the pull rod 60, and the pull rod 60 is driven to move downward together when the trip cover 51 moves downward. When the pull rod 60 moves downward to be inserted into the quick connector 80, the trip sleeve 51 can move downward relative to the pull rod 60 if overcoming the elastic force of the first spring 54.
The installation seat 21 of the main magnetic wheel assembly 20 is in threaded connection with the outer side wall of the upper cylinder 11, and the distance between the installation seat 21 and the upper cylinder 11 can be adjusted when the installation seat 21 is rotated so as to adjust the distance between the main magnetic wheel 24 and the auxiliary magnetic wheel 33, and then adjust the magnetic transmission torque.
The first spring 54 is arranged between the top of the trip sleeve 51 and the pull rod 60 in the trip sleeve 51, when the pull rod 60 moves downwards to open the vacuum plug 2, the distance between the main magnetic wheel assembly 20 and the auxiliary magnetic wheel assembly 30 is larger, the magnetic transmission torque is smaller, the magnetic transmission torque cannot overcome the elastic force of the first spring 54, after the pull rod 60 moves downwards to be locked with the quick connector 80, the pull rod 60 stops moving downwards, and when the main rotating shaft 23 continues to rotate, the magnetic transmission gap is large, the magnetic transmission torque cannot overcome the elastic force of the first spring 54, so that the trip sleeve 51 cannot move downwards relative to the pull rod 60, the trip sleeve 51 cannot press the limiting mechanism 52 downwards, the limiting mechanism 52 cannot press the trip piece 53 downwards, the trip piece 53 leaves the quick connector 80, after the quick connector 80 locks the pull rod 60, the main rotating shaft 23 is reversely rotated, and the quick connector 80 and the vacuum plug 2 can rise together with the pull rod 60 so as to open the vacuum plug 2 of the vacuum plug 1 of the equipment.
After the evacuation is completed, the gap between the master magnetic wheel assembly 20 and the slave magnetic wheel assembly 30 is reduced, so that the transmission gap of the magnetic wheels is reduced, and the transmission torque of the magnetic wheels is increased. The main rotation shaft 23 is rotated, and the pull rod 60, the trip bush 51 and the reset member 70 are moved downward until the vacuum plug 2 is closed on the apparatus evacuation port 1. Because the transmission torque of the magnetic wheel becomes larger, as shown in fig. 5, when the main rotation shaft 23 continues to rotate, the pull rod 60 cannot continue to move downwards under the limiting action of the quick connector 80, but the lead screw nut 42 continues to compress the first spring 54, so that the release sleeve 51 continues to move downwards against the elastic force of the first spring 54, that is, at this time, the release sleeve 51 and the pull rod 60 generate relative displacement, the release sleeve 51 continues to move downwards to press the limiting mechanism 52 downwards, the limiting mechanism 52 presses the release piece 53 downwards, so that the release piece 53 compresses the quick connector 80, at this time, the pull rod 60 can release the locking state with the quick connector 80 under the action of external force, and when the main rotation shaft 23 reversely rotates, the pull rod 60 can leave the quick connector 80 and return to the initial state.
In this embodiment, by setting the first spring 54 and setting the distance between the master magnetic wheel assembly 20 and the slave magnetic wheel assembly 30 to be adjustable, the number of rotations of the master rotary shaft 23 need not be precisely determined when the master rotary shaft 23 is rotated in each state, and when the distance between the master magnetic wheel assembly 20 and the slave magnetic wheel assembly 30 is large, the lead screw nut 42 cannot overcome the elastic force of the first spring 54 even if the master rotary shaft 23 is excessively rotated, so that the release sleeve 51 cannot move downward relative to the pull rod 60, and only when the magnetic transmission torque between the master magnetic wheel assembly 20 and the slave magnetic wheel assembly 30 is adjusted to be a proper magnitude, the lead screw nut 42 can overcome the elastic force of the first spring 54.
In some embodiments, as shown in fig. 4, the limiting mechanism 52 includes a sliding sleeve 521 and an elastic limiting member 522, the sliding sleeve 521 is movably disposed on an inner side wall of the barrel 10, a clamping groove 13 is disposed on the inner side wall of the barrel 10, a through hole is disposed on the sliding sleeve 521 in an inclined manner, the elastic limiting member 522 is disposed in the through hole, and when the sliding sleeve 521 moves to the elastic limiting member 522 corresponding to the clamping groove 13, the elastic limiting member 522 extends into the clamping groove 13 to be clamped with the clamping groove 13; the pull rod 60 drives the reset piece 70 to move upwards, so that the reset piece 70 lifts the elastic limiting piece 522 upwards, the elastic limiting piece 522 releases the clamping connection with the clamping groove 13, the sliding sleeve 521 releases the pressure on the release piece 53, and the release piece 53 is reset to leave the quick connector 80.
The through hole is a stepped hole, and the stepped hole comprises a first stepped hole and a second stepped hole which are communicated, and the second stepped hole is close to the inner wall of the barrel 10. As shown in fig. 2, the elastic limiting member 522 includes a second spring 5221 and a limiting rod 5222, the limiting rod 5222 is disposed in the first stepped hole and the second stepped hole, one end of the limiting rod 5222 extends out of the first stepped hole, the second spring 5221 is sleeved on the limiting rod 5222 and is located in the second stepped hole, one end of the second spring 5221 is abutted with the other end of the limiting rod 5222, and the other end of the second spring 5221 is abutted with the second stepped hole.
When the elastic limiting piece 522 is abutted against the inner wall of the cylinder 10, the second spring 5221 on the elastic limiting piece 522 is in a compressed state under the action of the inner wall of the cylinder 10, when the sliding sleeve 521 moves downwards to the clamping groove 13 corresponding to the elastic limiting piece 522, the limiting rod 5222 stretches under the action of the elastic force of the second spring 5221 and stretches into the clamping groove 13, so that the sliding sleeve 521 is fixed with the cylinder 10, and when the trip sleeve 51 leaves the sliding sleeve 521, the limiting mechanism 52 still can keep the downward pressure on the trip piece 53.
The limiting rod 5222 comprises a head and a rod part, the diameter of the head is larger than that of the rod part, and the head extends out of the first stepped hole; the bottom of the reset member 70 is provided with a hook portion 71 for hooking the head. After the sliding sleeve 521 is fixed with the cylinder 10, when the pull rod 60 moves upward with the reset member 70 until the hook portion 71 of the reset member 70 contacts the head portion of the stop lever 5222, the rod portion of the stop lever 5222 can be pulled out from the clamping groove 13 when the reset member 70 continues to move upward, so that the elastic stop member 522 is released from the clamping with the clamping groove 13.
In some embodiments, as shown in fig. 1 and 2, the quick connector 80 is disposed in the lower valve seat 12, the trip member 53 is disposed obliquely to the side wall of the lower valve seat 12, one end of the trip member 53, which is adjacent to the quick connector 80 when pressed, extends out of the lower valve seat 12 and compresses the quick connector 80, and the trip member 53 is retracted into the lower valve seat 12 when not pressed. The bottom of the slide 521 is a bevel for pressing the trip 53 obliquely downward. Providing the bottom of the slide 521 with a bevel facilitates depressing the trip 53 when the slide 521 moves downward.
The advantages of a magnetically driven vacuum pull valve of this embodiment are as follows:
(1) The structure body does not need a sealing piece to realize ultrahigh vacuum, the structure body realizes sealing through welding combination, and the magnetic non-contact transmission is utilized to realize the opening, closing and disengaging operation requirements of the vacuum plug.
(2) Vacuum operation without leakage
Because the structural body is connected through welding to form a cavity, the operation of the vacuum plug is non-contact, no leakage exists in the operation process, the vacuum operation of the internal vacuum degree is not influenced, and no leakage exists.
(3) Versatility of
The adapting piece of the equipment evacuation port is in threaded connection with the vacuum valve and is sealed through metal, the sealing is reliable, and the use of different equipment evacuation ports can be met by replacing different adapting pieces.
(4) Reliable structure
The cylinder structure adopts stainless steel metal piece welding, the transmission structure is a simple and reliable screw rod structure, the structure is reliable in use, no nonmetal sealing piece exists, and the service life is long.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (6)
1. A magnetically actuated vacuum pull valve comprising:
the top of the cylinder is closed, and the bottom of the cylinder is used for being connected with an equipment evacuation port in a sealing way;
the main magnetic wheel assembly is arranged outside the top of the cylinder body;
the slave magnetic wheel assembly is arranged in the cylinder body and corresponds to the main magnetic wheel assembly, and the main magnetic wheel assembly is rotated to drive the slave magnetic wheel assembly to rotate;
The screw rod assembly comprises a screw rod and a screw rod nut, the screw rod is fixedly connected with the slave magnetic wheel assembly, the screw rod nut is in threaded connection with the screw rod, and the screw rod assembly is driven by the master magnetic wheel assembly and the slave magnetic wheel assembly;
The quick connector is arranged at the bottom of the cylinder body, and one end of the quick connector extends out of the cylinder body and is used for being connected with a vacuum plug arranged at an evacuation port of the equipment;
The tripping assembly comprises a tripping sleeve, a limiting mechanism and a tripping piece, wherein the tripping sleeve is fixedly connected with the screw rod nut and is in sliding connection with the inner wall of the cylinder body, the limiting mechanism is movably arranged on the inner wall of the cylinder body and can be clamped with the cylinder body, and the tripping piece is arranged at the bottom of the limiting mechanism;
the pull rod is arranged in the release sleeve and can move axially relative to the release sleeve, and a limiting part is arranged at the bottom of the pull rod;
The resetting piece is movably sleeved outside the drawing rod, and the top of the resetting piece is positioned above the limiting part;
in an initial state, the release sleeve is positioned above the limiting mechanism, the limiting part supports the reset piece, the reset piece lifts the limiting mechanism upwards to release the clamping connection with the inner wall of the cylinder and release the pressure on the release piece, the release piece leaves the quick connector, and the pull rod stretches into the quick connector to be locked with the quick connector so as to open the vacuum plug;
The tripping device comprises a tripping device, a main magnetic wheel assembly, a tripping sleeve, a screw nut, a limiting mechanism, a quick-action connector and a tripping sleeve, wherein the tripping device is in a tripping state, the tripping sleeve drives the pulling rod and the vacuum plug to move downwards to an evacuation port of the vacuum plug inserting device, the pulling rod is continuously rotated, the pulling rod is static, the screw nut drives the tripping sleeve to continuously move downwards to press the limiting mechanism, the limiting mechanism moves downwards to be clamped with the inner wall of the barrel, and the limiting mechanism presses down the tripping device to enable the tripping device to press the quick-action connector, and the pulling rod and the quick-action connector are separable;
the distance between the main magnetic wheel assembly and the cylinder body is adjustable;
The tripping assembly further comprises a first spring, the first spring is arranged in the tripping sleeve and sleeved on the drawing rod, one end of the first spring is abutted with the top of the tripping sleeve, and the other end of the first spring is abutted with the drawing rod;
The inner side wall of the release sleeve is provided with a retainer ring, the outer side wall of the pull rod is provided with a protruding part, the protruding part is arranged on the retainer ring, and the first spring is positioned between the top of the release sleeve and the protruding part;
The limiting mechanism comprises a sliding sleeve and an elastic limiting piece, the sliding sleeve is movably arranged on the inner side wall of the barrel, a clamping groove is formed in the inner side wall of the barrel, a through hole which is obliquely arranged is formed in the sliding sleeve, the elastic limiting piece is arranged in the through hole, and when the sliding sleeve moves to the position, corresponding to the clamping groove, of the elastic limiting piece, the elastic limiting piece stretches into the clamping groove to be clamped with the clamping groove;
The pull rod drives the reset piece to move upwards, so that the reset piece lifts the elastic limiting piece upwards, the elastic limiting piece releases the clamping connection with the clamping groove, the sliding sleeve releases the pressure on the trip piece, and the trip piece is reset to leave the quick connector;
The barrel includes barrel and lower disk seat, down the disk seat with the bottom sealing connection of last barrel, lower disk seat is used for evacuating mouth sealing connection with equipment, quick connector sets up in the disk seat down, the tripping part slope sets up down the lateral wall of disk seat, be close to during the tripping part pressurized one end of quick connector stretches out down the disk seat and compresses tightly the quick connector, the tripping part is not pressed the time retract in the disk seat down.
2. A magnetically actuated vacuum extractor valve as claimed in claim 1, wherein,
The through hole is a stepped hole, the stepped hole comprises a first stepped hole and a second stepped hole which are communicated, and the second stepped hole is arranged close to the inner wall of the cylinder;
the elastic limiting piece comprises a second spring and a limiting rod, the limiting rod is arranged in the first stepped hole and the second stepped hole, one end of the limiting rod extends out of the first stepped hole, the second spring is sleeved on the limiting rod and located in the second stepped hole, one end of the second spring is in butt joint with the other end of the limiting rod, and the other end of the second spring is in butt joint with the second stepped hole.
3. A magnetically actuated vacuum extractor valve as claimed in claim 2, wherein,
The limiting rod comprises a head part and a rod part, the diameter of the head part is larger than that of the rod part, and the head part extends out of the first stepped hole;
The bottom of the reset piece is provided with a hook part for hooking the head part.
4. The magnetically actuated vacuum extractor valve of claim 1 wherein the bottom of the sliding sleeve is a ramp for biasing the trip member downward.
5. A magnetically actuated vacuum extractor valve as claimed in claim 1, wherein,
The main magnetic wheel assembly comprises a mounting seat, a main bearing, a main rotating shaft and a main magnetic wheel, wherein the mounting seat is in threaded connection with the outer side wall of the cylinder body, the main bearing is arranged in the mounting seat, the main rotating shaft is arranged in the main bearing, one end of the main rotating shaft extends out of the mounting seat, and the main magnetic wheel is fixedly connected with the main rotating shaft.
6. A magnetically actuated vacuum extractor valve as claimed in claim 5, wherein,
The slave magnetic wheel assembly comprises a slave bearing, a slave rotating shaft and a slave magnetic wheel, wherein the slave bearing is arranged at the top of the cylinder body, the slave rotating shaft is arranged on the slave bearing, and the slave magnetic wheel is fixedly connected with the slave rotating shaft and corresponds to the master magnetic wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111436650.7A CN114183539B (en) | 2021-11-29 | 2021-11-29 | Magnetic force driving type vacuum drawing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111436650.7A CN114183539B (en) | 2021-11-29 | 2021-11-29 | Magnetic force driving type vacuum drawing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183539A CN114183539A (en) | 2022-03-15 |
| CN114183539B true CN114183539B (en) | 2024-05-10 |
Family
ID=80602916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111436650.7A Active CN114183539B (en) | 2021-11-29 | 2021-11-29 | Magnetic force driving type vacuum drawing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114183539B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042765A (en) * | 1988-11-14 | 1990-06-06 | 吴声震 | Electricity-saving multi-function electromagnetic valve |
| CN103994232A (en) * | 2014-05-12 | 2014-08-20 | 东北大学 | Wide-range precision vacuum leak valve |
| CN205047860U (en) * | 2015-10-14 | 2016-02-24 | 泉州市中天石油化工机械制造有限公司 | A two valves for high temperature high pressure pipeline |
| JP2016156447A (en) * | 2015-02-24 | 2016-09-01 | 株式会社不二工機 | Motor-operated valve and its assembling method |
| CN109630036A (en) * | 2019-02-15 | 2019-04-16 | 长江大学 | A kind of anti-reverse mechanism of sucker rod |
| CN112413403A (en) * | 2020-12-03 | 2021-02-26 | 广东省特种设备检测研究院东莞检测院 | Vacuumizing self-sealing interface of external pressure container and operation method thereof |
| CN112682546A (en) * | 2020-12-07 | 2021-04-20 | 河南航天液压气动技术有限公司 | Pressure control valve |
| CN113685559A (en) * | 2020-05-19 | 2021-11-23 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4055002B2 (en) * | 2003-09-02 | 2008-03-05 | Ｓｍｃ株式会社 | Vacuum pressure control valve |
| JP7106062B2 (en) * | 2018-06-22 | 2022-07-26 | Smc株式会社 | vacuum valve |
-
2021
- 2021-11-29 CN CN202111436650.7A patent/CN114183539B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042765A (en) * | 1988-11-14 | 1990-06-06 | 吴声震 | Electricity-saving multi-function electromagnetic valve |
| CN103994232A (en) * | 2014-05-12 | 2014-08-20 | 东北大学 | Wide-range precision vacuum leak valve |
| JP2016156447A (en) * | 2015-02-24 | 2016-09-01 | 株式会社不二工機 | Motor-operated valve and its assembling method |
| CN205047860U (en) * | 2015-10-14 | 2016-02-24 | 泉州市中天石油化工机械制造有限公司 | A two valves for high temperature high pressure pipeline |
| CN109630036A (en) * | 2019-02-15 | 2019-04-16 | 长江大学 | A kind of anti-reverse mechanism of sucker rod |
| CN113685559A (en) * | 2020-05-19 | 2021-11-23 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN112413403A (en) * | 2020-12-03 | 2021-02-26 | 广东省特种设备检测研究院东莞检测院 | Vacuumizing self-sealing interface of external pressure container and operation method thereof |
| CN112682546A (en) * | 2020-12-07 | 2021-04-20 | 河南航天液压气动技术有限公司 | Pressure control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114183539A (en) | 2022-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4309022A (en) | Poppet valve actuator apparatus | |
| EP3164546B1 (en) | Manway cover | |
| CN114183539B (en) | Magnetic force driving type vacuum drawing valve | |
| CN110630757B (en) | Vacuum valve | |
| CN212297200U (en) | Cam handle type locker | |
| US20130168582A1 (en) | Valve actuator | |
| JP2014514160A (en) | Press machine with improved maintainability | |
| US10851905B2 (en) | Multi-motion fail-safe operating gate valve | |
| CN209800751U (en) | Ferrule press-sleeve type stop valve | |
| CN105736555B (en) | A kind of have auxiliary evacuation and the vacuum cup of function of increasing pressure | |
| US9771200B2 (en) | Easily-operated vacuum storage container | |
| US6386248B2 (en) | Hydraulically operated post valve yoke | |
| JP6261593B2 (en) | Automatic diaphragm valve for high pressure | |
| CN114151556B (en) | Mechanical vacuum pull valve | |
| CN113183081B (en) | Harmless dismounting device of sealed apron | |
| CN214306502U (en) | Vacuumizing self-sealing interface of external pressure container | |
| CN112243477A (en) | Pressure relief valve assembly | |
| WO2019179628A1 (en) | Securing device, wafer transport container having at least one securing device, securing system and method having the securing device | |
| US3719200A (en) | Vacuum pumpout and pressure relief valve | |
| CN113623181B (en) | Vacuumizing device | |
| CN215460361U (en) | Door lock linkage device of high-temperature sterilizer | |
| CN113606219B (en) | Air cylinder with lock | |
| CN219827688U (en) | Interlocking device of quick-opening pressure container | |
| CN215522176U (en) | Shifting fork type single-action pneumatic actuator | |
| CN213954506U (en) | Side-mounted hand wheel for pneumatic actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |