CN203798046U - Leak-proof thimble device - Google Patents
Leak-proof thimble device Download PDFInfo
- Publication number
- CN203798046U CN203798046U CN201420167992.2U CN201420167992U CN203798046U CN 203798046 U CN203798046 U CN 203798046U CN 201420167992 U CN201420167992 U CN 201420167992U CN 203798046 U CN203798046 U CN 203798046U
- Authority
- CN
- China
- Prior art keywords
- inlet
- outlet
- ejector pin
- refrigerant
- nozzle
- 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 - Fee Related
Links
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 54
- 239000011737 fluorine Substances 0.000 claims abstract description 54
- 239000003507 refrigerant Substances 0.000 claims abstract description 46
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 238000004378 air conditioning Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000008676 import Effects 0.000 claims 2
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a leak protection thimble device. Leak protection thimble device for connect the notes fluorine mouth of air conditioning unit in order to pour into the refrigerant or export the refrigerant from the unit in to the air conditioning unit, annotate fluorine mouth including the adapter sleeve and with the needle that the adapter sleeve is connected, leak protection thimble device includes: the connecting nozzle comprises a first inlet and a first outlet, and the first inlet and the first outlet are detachably connected with the connecting sleeve; the trigger part is used for triggering the valve needle, and when the first inlet and outlet of the connecting nozzle are in a connecting state with the connecting sleeve, the trigger part is provided with a first position for pressing the valve needle of the fluorine injection nozzle to enable the fluorine injection nozzle to be in a conducting state and a second position for leaving the valve needle of the fluorine injection nozzle to enable the fluorine injection nozzle to be in a closing state. Use the technical scheme of the utility model, before pressing the needle, be connected first exit with the adapter sleeve of annotating the fluorine mouth, the problem of refrigerant leakage when effectively having solved among the prior art to the refrigerant of injecting in the unit or exporting the refrigerant from the unit.
Description
Technical Field
The utility model relates to a refrigeration plant field, more specifically relates to a leak protection thimble device.
Background
When injecting the refrigerant or exporting the refrigerant from the air conditioning unit into the air conditioning unit through annotating the fluorine mouth, at first be connected thimble device and notes fluorine mouth, annotate fluorine mouth including the adapter sleeve with set up the needle in the adapter sleeve, prior art's thimble device including connect the mouth with connect the ejector pin of mouth fixed connection, at the in-process of being connected of connecting mouth and notes fluorine mouth, the ejector pin touches the needle promptly, thereby lead to just making notes fluorine mouth switch on when not accomplishing the connection of connecting mouth with annotating fluorine mouth, consequently cause the refrigerant to leak easily. The following problems are easily caused in the prior art:
1. when a valve needle of the fluorine injection nozzle is pressed, a refrigerant is sprayed out, so that operators are easily injured;
2. when the fluorine injection nozzle is pressed by a valve needle, a refrigerant is sprayed out, the quantity of the sprayed refrigerant is not easy to determine, the preset pouring amount is influenced, if the refrigerant is sprayed out too much, the normal work of the air conditioning unit is directly influenced, the error is large when the pressure sensor is used for measuring the pressure of the refrigerant of the air conditioning unit, and the tested data has low reference value.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a leak protection thimble device to the problem of refrigerant leakage when solving among the prior art and injecting the refrigerant in to the unit or export the refrigerant from the unit.
In order to achieve the above object, the utility model provides a leak protection thimble device for connect air conditioning unit's notes fluorine mouth with pour into the refrigerant into in to air conditioning unit or export the refrigerant from the unit, annotate fluorine mouth including the adapter sleeve and with the needle that the adapter sleeve is connected, leak protection thimble device includes: the connecting nozzle comprises a first inlet and a first outlet, and the first inlet and the first outlet are detachably connected with the connecting sleeve; the trigger part is used for triggering the valve needle, and when the first inlet and outlet of the connecting nozzle are in a connecting state with the connecting sleeve, the trigger part is provided with a first position for pressing the valve needle of the fluorine injection nozzle to enable the fluorine injection nozzle to be in a conducting state and a second position for leaving the valve needle of the fluorine injection nozzle to enable the fluorine injection nozzle to be in a closing state.
Furthermore, the connecting nozzle also comprises a second inlet and outlet, the second inlet and outlet is communicated with the first inlet and outlet, and the second inlet and outlet is used for connecting a pressure sensor; or the second inlet and outlet is used for connecting a guide pipe for injecting the refrigerant into the unit or outputting the refrigerant from the unit.
Furthermore, the connecting nozzle also comprises a second inlet and outlet and a third inlet and outlet, the second inlet and outlet and the third inlet and outlet are communicated with the first inlet and outlet, the second inlet and outlet is used for connecting a pressure sensor, and the third inlet and outlet is used for connecting a guide pipe for injecting a refrigerant into the unit or outputting the refrigerant from the unit.
Further, the connecting nozzle is in threaded connection with the connecting sleeve.
Further, the connecting nozzle comprises a connecting nut and a connecting nozzle body connected with the connecting nut, the connecting nut is in threaded connection with the connecting sleeve, and a first inlet and a first outlet are formed at one end, connected with the connecting sleeve, of the connecting nut.
Further, trigger part includes the ejector pin, and the ejector pin setting is in the connecting nozzle, and when the first exit of connecting nozzle was in connected state with the adapter sleeve, the ejector pin was along the movably setting of extending direction of ejector pin.
Further, the ejector rod comprises a rod body and a stop part connected with the rod body, the connecting nozzle further comprises a stop part, and the stop part are arranged in a matched mode to prevent the ejector rod from moving out of the connecting nozzle.
Further, the triggering part also comprises a driving unit for driving the ejector rod to move along the extending direction of the ejector rod.
Further, the driving unit comprises a thread driving mechanism, and the thread driving mechanism is in transmission connection with the ejector rod.
Further, the drive unit further comprises a tool engaging portion; or the driving unit further comprises a handle, and the handle is in transmission connection with the thread driving mechanism.
Further, the driving unit also comprises a driving motor, and the driving motor is in transmission connection with the thread driving mechanism.
Furthermore, the driving unit also comprises a thimble, the driving motor is in driving connection with the thimble through a thread driving mechanism, and the thimble is in driving connection with the ejector rod.
Use the technical scheme of the utility model, leak protection thimble device is including connecting the mouth and triggering the portion, connect the mouth including first exit, first exit is connected with adapter sleeve detachably, trigger the portion and be used for triggering the needle, connect the first exit of mouth and when the adapter sleeve is in the connected state, trigger the portion and have the needle of pressing down notes fluorine mouth so that notes fluorine mouth is in the first position of on-state and leave the needle of notes fluorine mouth so that notes fluorine mouth is in the second position of closed state. Use the technical scheme of the utility model, before pressing the needle, be connected first exit with the adapter sleeve of annotating the fluorine mouth, the problem of refrigerant leakage when effectively having solved among the prior art to the refrigerant of injecting in the unit or exporting the refrigerant from the unit.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of a thimble leakage preventing device according to a first embodiment of the present invention;
fig. 2 shows a schematic structural view of a thimble leakage preventing device according to a second embodiment of the present invention;
fig. 3 shows a schematic structural diagram of a thimble leakage preventing device according to a third embodiment of the present invention.
Reference numerals: 1. a connecting nozzle; 11. a connecting nut; 12. a connecting nozzle body; 2. a trigger section; 21. a top rod; 211. a rod body; 212. a stopper; 22. a handle; 23. a tool engaging portion; 24. a drive motor; 25. a thimble; 3. connecting sleeves; 41. a union nut; 42. and (4) connecting the pipes.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The first embodiment is as follows:
as shown in fig. 1, the utility model discloses a leak protection thimble device for connect air conditioning unit's notes fluorine mouth with pour into the refrigerant into in the air conditioning unit or export the refrigerant from the unit, annotate fluorine mouth including adapter sleeve 3 and the needle of being connected with adapter sleeve 3, leak protection thimble device includes adapter sleeve 1 and trigger part 2. The connection mouth 1 comprises a first access opening which is detachably connected with the connection sleeve 3. The trigger part 2 is used for triggering the valve needle.
When the first inlet/outlet of the connecting nozzle 1 is connected with the connecting sleeve 3, the trigger part 2 has a first position for pressing the valve needle of the fluorine injection nozzle to enable the fluorine injection nozzle to be in a conducting state and a second position for separating the valve needle of the fluorine injection nozzle to enable the fluorine injection nozzle to be in a closing state.
The fluorine injection nozzle comprises a connecting sleeve 3 and a valve needle connected with the connecting sleeve 3. The fluorine injection nozzle also comprises a spring which drives the valve needle to move towards the direction of closing the fluorine injection nozzle. And in the process that the valve needle compresses the spring under the driving of external force, the valve needle opens the fluorine injection nozzle.
When a refrigerant is injected into an air conditioning unit or is output from the air conditioning unit by using the anti-leakage ejector pin device, the first inlet/outlet of the connecting nozzle 1 is connected with the fluorine injection nozzle, and then the valve needle is pressed by the trigger part 2. The problem of refrigerant leakage when injecting the refrigerant into the unit or outputting the refrigerant from the unit in the prior art is effectively solved.
The connecting nozzle also comprises a second inlet and a second outlet, and the second inlet and the second outlet are communicated with the first inlet and the second inlet. The second inlet and outlet is used for connecting the pressure sensor. The pressure sensor is connected to the second inlet/outlet port via a joint nut 41 and a connection pipe 42. Or the second inlet and outlet is used for connecting a guide pipe for injecting the refrigerant into the unit or outputting the refrigerant from the unit.
In this embodiment, the second inlet/outlet may be connected to a pressure sensor for measuring the pressure of the refrigerant in the unit, or may be connected to a refrigerant conduit for injecting the refrigerant into the unit or outputting the refrigerant from the unit.
Preferably, the connecting nozzle 1 further comprises a second inlet and a second outlet, the second inlet and the second outlet are communicated with the first inlet and the second outlet, the second inlet and the second outlet are used for connecting a pressure sensor, and the third inlet and the third outlet are used for connecting a conduit for injecting a refrigerant into the unit or outputting the refrigerant from the unit.
Preferably, the connection mouth 1 is screwed with the connection sleeve 3.
In this embodiment, the connection nozzle 1 includes a connection nut 11 and a connection nozzle body 12 connected with the connection nut 11, the connection nut 11 is connected with the connection sleeve 3 by a thread, and a first inlet and a first outlet are formed at one end of the connection nut 11 connected with the connection sleeve 3.
After the connecting nut 11 is connected with the connecting sleeve 3, the valve needle of the fluorine injection nozzle is triggered by the trigger part 2 so that the fluorine injection nozzle is in an open state, and the fluorine injection nozzle is communicated with the connecting nozzle. Effectively avoiding the leakage of the refrigerant.
The triggering part 2 comprises an ejector rod 21, the ejector rod 21 is arranged in the connecting nozzle 1, and when the first inlet and outlet of the connecting nozzle 1 is connected with the connecting sleeve 3, the ejector rod 21 is movably arranged along the extending direction of the ejector rod 21. The ejector rod 21 presses the valve needle to open the fluorine injection nozzle during movement in the extending direction of the ejector rod.
The push rod 21 comprises a rod body 211 and a stop part 212 connected with the rod body 211, the connector 1 further comprises a stop part, and the stop part 212 and the stop part are arranged in a matched mode to prevent the push rod 21 from moving out of the connector 1.
The stopper is a stepped surface formed inside the connection nozzle body 12. The stopper is connected to the outer peripheral surface of the stem rod and extends in a direction away from the stem rod 21. The stop is arranged to cooperate with a stop to prevent the carrier rod 21 from moving out of the connection mouth 1.
In this embodiment, the triggering part 2 further includes a driving unit for driving the push rod 21 to move in the extending direction of the push rod 21. The driving unit comprises a thread driving mechanism, and the thread driving mechanism is in transmission connection with the ejector rod 21. The drive unit further comprises a tool engaging portion 23 in driving connection with the threaded drive mechanism.
The screw drive mechanism includes a stud, and the extension direction of the stud coincides with the extension direction of the jack 21. The stud is in threaded connection with the connecting nozzle 1. During the screwing process of the stud, the stud drives the ejector rod 21 to press the valve needle to open the fluorine injection nozzle. In the process of screwing out the stud, the spring drives the valve needle to close the fluorine injection nozzle.
The tool matching part 23 is a groove which is arranged on the end face of the stud and matched with an inner hexagonal tool. The anti-leakage thimble device has the advantages that the inner hexagonal tool drives the stud to be screwed in and out, and the practicability of the anti-leakage thimble device is improved.
Example two:
as shown in fig. 2, the present embodiment is an improvement of the first embodiment: the drive unit comprises a handle 22. The handle 22 is in driving connection with the screw drive. In this embodiment, the tool engaging portion is implemented by a handle drive instead. The handle is connected with the stud to drive the stud to be screwed in and out, so that the ejector rod 21 is driven to be along the extending direction of the ejector rod 21.
The connecting nozzle body 12 is provided with a through hole in the same direction as the extending direction of the carrier rod 21. The ejector rod is arranged in the through hole. The through hole comprises a first hole section close to the coupling nut 11 and a second hole section communicating with the first hole section. The first bore section has an inner diameter less than an inner diameter of the second bore section. A step surface is formed at the joint of the first hole section and the second hole section. The stepped surface cooperates with the stopper 212 to prevent the ejector pin 21 from moving out of the connector nozzle body 12.
1. Connecting the connecting nut 11 with the connecting sleeve 3 and then screwing;
2. the pressure sensor is connected with the second inlet and outlet through a joint nut 41 and a connecting pipe 42;
3. the rotating handle 22 drives the ejector rod to move along the extension direction of the ejector rod, the ejector rod 21 presses the valve needle of the fluorine injection nozzle, and the pressure sensor displays the result.
Example three:
as shown in fig. 3, in the present embodiment, the drive unit further includes a drive motor 24 and a screw drive mechanism. The driving motor is in transmission connection with the thread driving mechanism.
The driving unit further comprises a thimble 25, the driving motor 24 is in driving connection with the thimble 25 through a thread driving mechanism, and the thimble 25 is in driving connection with the ejector rod 21.
The thread driving mechanism comprises an internal thread arranged on the inner circumferential surface of the connecting nozzle body and an ejector pin matched with the internal thread. The outer peripheral surface of the thimble is provided with an external thread which is matched with the internal thread. The thimble is connected with the driving motor in a transmission way. The thimble is driven to rotate by rotation of the driving motor, and the thimble moves along the extension direction of the ejector rod relative to the process of rotation of the internal thread, so that the ejector rod is pressed.
In this embodiment, the driving motor is a stepping motor, the rotation direction of the stepping motor depends on the phase of the electrical pulse, and the rotation angle of the stepping motor depends on the number of the pulses. The driving motor determines the rotation amount according to the received pulse number. Successive pulses will cause it to rotate continuously. The driving shaft of the rotor is in transmission connection with the thimble 25 through a thread driving mechanism so as to drive the thimble 25 to move along the extending direction of the ejector rod 21.
In this embodiment, the working process of connecting the fluorine injection nozzle by using the leak-proof thimble device is as follows:
1. connecting the connecting nut 11 with the connecting sleeve 3 and then screwing;
2. connecting the pressure sensor with the second inlet and the second outlet through a joint nut and a connecting pipe;
3. the driving motor drives the ejector pin 25 to move along the extension direction of the ejector rod 21 under the driving of the positive rotation pulse, the ejector pin 25 drives the ejector rod 21 so that the ejector rod 21 presses a valve needle of the fluorine injection nozzle, and the pressure sensor displays the result;
4. the driving motor drives the thimble 25 to move along the extending direction of the mandril 21 to move towards the direction far away from the mandril 21 under the driving of the reverse pulse, the valve needle moves towards the position for closing the fluorine injection nozzle, and finally the fluorine injection nozzle is closed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. The utility model provides a leak protection thimble device for connect the notes fluorine mouth of air conditioning unit in order to pour into the refrigerant in the air conditioning unit or export the refrigerant from the unit, annotate fluorine mouth include adapter sleeve (3) and with the needle that adapter sleeve (3) are connected, its characterized in that, leak protection thimble device includes:
the connecting nozzle (1), the connecting nozzle (1) includes the first import and export, the said first import and export with the said adapter sleeve (3) is connected removably;
a trigger part (2), the trigger part (2) being used to trigger the valve needle,
when the first inlet and outlet of the connecting nozzle (1) and the connecting sleeve (3) are in a connecting state, the trigger part (2) is provided with a first position for pressing the valve needle of the fluorine injection nozzle to enable the fluorine injection nozzle to be in a conducting state and a second position for separating the valve needle of the fluorine injection nozzle to enable the fluorine injection nozzle to be in a closing state.
2. The leak-proof thimble device of claim 1, wherein said connection mouth further comprises a second port, said second port communicating with said first port,
the second inlet and the second outlet are used for connecting a pressure sensor; or
And the second inlet and outlet is used for connecting a guide pipe for injecting a refrigerant into the unit or outputting the refrigerant from the unit.
3. The leakage-proof thimble device according to claim 1, wherein the connection nozzle (1) further comprises a second inlet/outlet and a third inlet/outlet, the second inlet/outlet and the third inlet/outlet are both communicated with the first inlet/outlet, the second inlet/outlet is used for connecting a pressure sensor, and the third inlet/outlet is used for connecting a conduit for injecting a refrigerant into the unit or outputting a refrigerant from the unit.
4. The leakproof ejector pin device according to claim 1, wherein the connecting nozzle (1) is in threaded connection with the connecting sleeve (3).
5. The leakproof ejector pin device according to claim 4, wherein the connecting nozzle (1) comprises a connecting nut (11) and a connecting nozzle body (12) connected with the connecting nut (11), the connecting nut (11) is in threaded connection with the connecting sleeve (3), and one end of the connecting nut (11) connected with the connecting sleeve (3) forms the first inlet and outlet.
6. The anti-leakage ejector pin device according to claim 1, wherein the trigger portion (2) comprises an ejector pin (21), the ejector pin (21) is disposed in the connecting nozzle (1), and when the first inlet/outlet of the connecting nozzle (1) is connected with the connecting sleeve (3), the ejector pin (21) is movably disposed along an extending direction of the ejector pin (21).
7. Leakage-proof thimble device according to claim 6, characterized in that said thimble (21) comprises a rod body (211) and a stop (212) connected to said rod body (211), said connection mouth (1) further comprising a stop cooperating with said stop to prevent said thimble (21) from moving out of said connection mouth (1).
8. The leakproof ejector pin device according to claim 6, wherein the trigger part (2) further comprises a driving unit for driving the ejector pin (21) to move along the extending direction of the ejector pin (21).
9. The leakproof ejector pin device according to claim 8, wherein the driving unit comprises a screw driving mechanism, and the screw driving mechanism is in transmission connection with the ejector rod (21).
10. The leak-proof thimble device of claim 9,
the drive unit further comprises a tool engaging portion (23); or,
the drive unit further comprises a handle (22), and the handle (22) is in transmission connection with the thread drive mechanism.
11. The thimble assembly of claim 9, wherein said drive unit further comprises a drive motor (24) drivingly connected to said threaded drive mechanism.
12. The leakproof ejector pin device according to claim 11, wherein the driving unit further comprises an ejector pin (25), the driving motor (24) is in driving connection with the ejector pin (25) through the thread driving mechanism, and the ejector pin (25) is in driving connection with the ejector rod (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420167992.2U CN203798046U (en) | 2014-04-08 | 2014-04-08 | Leak-proof thimble device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420167992.2U CN203798046U (en) | 2014-04-08 | 2014-04-08 | Leak-proof thimble device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203798046U true CN203798046U (en) | 2014-08-27 |
Family
ID=51380251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420167992.2U Expired - Fee Related CN203798046U (en) | 2014-04-08 | 2014-04-08 | Leak-proof thimble device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203798046U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633356A (en) * | 2014-12-10 | 2015-05-20 | 珠海格力电器股份有限公司 | Fluorine injection nozzle safety switching device |
-
2014
- 2014-04-08 CN CN201420167992.2U patent/CN203798046U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104633356A (en) * | 2014-12-10 | 2015-05-20 | 珠海格力电器股份有限公司 | Fluorine injection nozzle safety switching device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203798046U (en) | Leak-proof thimble device | |
| CN202555467U (en) | Adhesive dispensing robot with firing pin valve | |
| CN203159186U (en) | Liquid filling valve | |
| CN215940929U (en) | Online tubing hanger cleaning and maintaining tool | |
| CN209206371U (en) | It is a kind of apply to hot investment casting penetrate wax machine nozzle | |
| CN207647508U (en) | Note the online closed sampling device of polymers | |
| CN204554164U (en) | A kind of low voltage experiment machine butt joint | |
| CN109058576B (en) | Flow regulating valve | |
| CN203881489U (en) | Pressure gauge antifreezing filling device | |
| CN209640286U (en) | A kind of metal works Magnetic testing device | |
| CN207474793U (en) | Tail presss from both sides connector | |
| CN204677848U (en) | The special Self-fastening high pressure joint of a kind of high pressure needle valve | |
| CN2711389Y (en) | Sampling device | |
| CN204804832U (en) | Lead printing device | |
| CN203880291U (en) | Quick-opening-closing flange bronze soft pipe valve with automatic-sealing function of quick pipe connector | |
| CN205441319U (en) | Multi -functional lid that spouts with safety device | |
| CN210265887U (en) | Hydraulic spiral switch for aerospace system | |
| CN214907865U (en) | Medical disposable arteriovenous puncture needle | |
| CN215813890U (en) | Switch tool for high-temperature and high-pressure valve | |
| CN210890206U (en) | Quick-connecting ball valve | |
| CN221170847U (en) | Left-right universal speculum valve | |
| CN213642826U (en) | A pipe joint head positioner for liposuction equipment | |
| CN212517450U (en) | Anti-splashing vacuum liquid injection needle | |
| CN210920906U (en) | Prevent leaking fat valve joint of annotating | |
| CN203685735U (en) | Normally open hydraulic control valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |