CN114738122A - Micro-miniature engine throttle switch fine-tuning device - Google Patents
Micro-miniature engine throttle switch fine-tuning device Download PDFInfo
- Publication number
- CN114738122A CN114738122A CN202210339095.4A CN202210339095A CN114738122A CN 114738122 A CN114738122 A CN 114738122A CN 202210339095 A CN202210339095 A CN 202210339095A CN 114738122 A CN114738122 A CN 114738122A
- Authority
- CN
- China
- Prior art keywords
- throttle
- rotating rod
- bottom plate
- fine adjustment
- throttle valve
- 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.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
- F02D9/105—Details of the valve housing having a throttle position sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
- F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1035—Details of the valve housing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention belongs to the technical field of micro engines, in particular to a micro-adjustment device for a throttle switch of a micro engine, which comprises a bottom plate and a throttle valve tube body arranged at the top of the bottom plate, wherein a micro-adjustment component is arranged at one side of the bottom plate, a motor drives a half gear to rotate between a shell and an end cover through a driving gear by starting the motor, then the half gear drives a rotating rod to rotate in the throttle valve tube body so as to drive a valve plate to rotate in the throttle valve tube body, a rotating seat is driven to rotate in an angle sensor by the rotating rod, so that a ball is driven to rotate in a guide groove by a fixed seat, and a control chip is externally connected with the angle sensor so as to conveniently detect the rotating angle of the rotating rod, conveniently control the opening and closing angle of the valve plate and further improve the accuracy of the opening and closing of the throttle valve tube body of the engine, the sensitivity and the precision of the throttle valve pipe body are prevented from being influenced by the overlarge rotating angle of the rotating rod.
Description
Technical Field
The invention belongs to the technical field of miniature engines, and particularly relates to a micro-adjustment device for a throttle switch of a miniature engine.
Background
For a micro engine, the precision of a throttle switch is a precondition that the oil inlet amount and the air inlet amount can be precisely controlled, the throttle switch of the existing micro engine is generally controlled by a control system formed by a servo motor, and during the adjustment process of the throttle switch fine-tuning device of the existing micro engine, the rotation angle of the rotating rod cannot be detected, the opening and closing angle of the valve plate cannot be controlled conveniently, the accuracy of the engine throttle valve switch cannot be improved, the engine throttle valve switch cannot be adjusted finely, the sensitivity and the accuracy of the throttle valve are affected easily due to the overlarge rotation angle of the rotating rod, the engine throttle valve switch fine adjustment device is inconvenient to use, and the existing micro engine throttle valve switch fine adjustment device is not convenient to use, when closing the throttle body, lead to the not tight problem of emergence leakage of pipeline seal easily, can not guarantee the leakproofness of throttle body and valve block intercommunication department, can't guarantee the reliability of valve block.
Disclosure of Invention
To solve the problems raised in the background art described above. The invention provides a micro-miniature engine throttle switch fine-tuning device which has the characteristics that the rotation angle of a rotating rod is convenient to detect, the opening and closing angle of a valve plate is convenient to control, the accuracy of opening and closing of an engine throttle body is further improved, the sealing performance of a communication part between the throttle body and the valve plate can be ensured, and the reliability of the valve plate is further ensured.
In order to achieve the purpose, the invention provides the following technical scheme: a micro-miniature engine throttle switch fine-tuning device comprises a bottom plate and a throttle body arranged at the top of the bottom plate, wherein a fine-tuning assembly is arranged on one side of the bottom plate;
the fine setting subassembly includes casing, protective housing, motor, driving gear, half gear, bull stick and valve block, one side fixed connection of casing is in one side of bottom plate, protective housing bottom fixed connection is at the top of bottom plate, the internal face at the protective housing is installed to the fuselage of motor, the one end fixed connection of driving gear is at the output of motor, the surface of driving gear is connected in the meshing of half gear, the one end fixed connection of bull stick is in the one end of half gear, the surface of bull stick is rotated and is connected in the slotted hole that throttle valve body surface was seted up, bolted connection is passed through on the surface of bull stick in the one end of valve block, just the internal face at the throttle valve body is connected in the surface friction of valve block.
Preferably, the fine adjustment assembly further comprises an end cover, a rotating seat and an angle sensor, wherein one side of the end cover is connected to one side of the shell far away from the bottom plate through a bolt, one end of the rotating seat is fixedly connected to one end of the rotating rod far away from the half gear, the bottom end of the angle sensor is installed on the surface of the throttle valve body, and the surface of the rotating seat is rotatably connected to the inner wall surface of the angle sensor.
Preferably, in the micro-adjustment device for opening and closing a throttle valve of an engine according to the present invention, a plurality of fixed seats are fixedly connected to a surface of the rotary seat, a ball is rotatably connected to an inside of the fixed seats, a guide groove is formed in an inner wall surface of the angle sensor, and a surface of the ball is slidably connected to an inside of the guide groove.
Preferably, the micro-adjustment device for the throttle switch of the micro-engine is characterized in that an anti-leakage assembly is mounted on the surface of the throttle body, the anti-leakage assembly comprises a sealing sleeve, a return spring, a sliding block and an arc-shaped plate, the inner wall surface of the sealing sleeve is fixedly connected to the surface of the throttle body, the surface of the sleeve is fixedly connected to the inner wall of the throttle body, the return spring is fixedly connected between the sleeve and the sliding block, the surface of the sliding block is slidably connected to the inner wall surface of the sleeve, one end of the arc-shaped plate is fixedly connected to the other end of the sliding block, and the surface of the arc-shaped plate is connected to the surface of the valve plate in an abutting mode.
Preferably, the sealing sleeve is positioned right above the valve plate, and the surface of the sealing sleeve is fixedly connected with the sealing pipe.
In the micro engine throttle switch fine adjustment device according to the present invention, preferably, one end of the rotary rod penetrates through a surface of one end of the seal sleeve and extends to a surface of the other end, and the surface of the rotary rod is frictionally coupled to an inner wall surface of the seal tube.
Preferably, in the micro-engine throttle switch fine-tuning device according to the present invention, a support shaft is fixedly connected to one end of the half gear, and the support shaft is rotatably connected to an inner wall surface of the end cover through a bearing.
Preferably, the micro-adjustment device for the throttle switch of the micro-engine is provided with a slotted hole formed in the surface of the throttle body and communicated with the sealing pipe.
Compared with the prior art, the invention has the beneficial effects that:
by starting the motor, the motor drives the half gear to rotate between the shell and the end cover through the driving gear, then the half gear drives the rotating rod to rotate inside the throttle valve body, so as to drive the valve block to rotate inside the throttle valve body, during the period, the rotating seat is driven to rotate inside the angle sensor through the rotating rod, so as to drive the balls to rotate inside the guide groove through the fixing seat, and then the angle sensor is externally connected with a control chip, so that the rotating angle of the rotating rod can be conveniently detected, the opening and closing angle of the valve block can be conveniently controlled, the accuracy of the engine throttle valve body switch is improved, the engine throttle valve body switch can be conveniently finely adjusted, the phenomenon that the sensitivity and the accuracy of the throttle valve body are influenced due to the overlarge rotating angle of the rotating rod is avoided, the use is convenient, when the throttle valve body is opened and closed, the sliding block is pushed to move inside the sleeve through the reset spring, thereby the valve block is hugged closely to the extrusion arc, and then seals the junction of throttle valve body and valve block, avoids taking place the problem of leaking because of sealed not tight to can guarantee the leakproofness of throttle valve body and valve block intercommunication department, and then guarantee the reliability of valve block, the practicality is higher.
Drawings
The accompanying drawings, which 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 principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of a rotary rod according to the present invention;
FIG. 3 is a side view of the throttle body of the present invention;
FIG. 4 is a cross-sectional view of an angle sensor of the present invention;
figure 5 is a side cross-sectional view of the sealing sleeve of the present invention;
fig. 6 is a cross-sectional view of the sleeve of the present invention.
In the figure:
1. a base plate; 2. a throttle body; 3. a fine tuning component; 31. a housing; 32. a protective shell; 311. an end cap; 33. a motor; 34. a driving gear; 35. a half gear; 36. a rotating rod; 361. a rotating seat; 3611. a fixed seat; 3612. a ball bearing; 362. an angle sensor; 3621. a guide groove; 37. a valve plate; 4. a leak-proof assembly; 41. sealing sleeves; 411. a sealing tube; 42. a sleeve; 43. a return spring; 44. a slider; 45. an arc-shaped plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1:
a micro-miniature engine throttle switch fine-tuning device comprises a bottom plate 1 and a throttle body 2 arranged on the top of the bottom plate 1, wherein a fine-tuning assembly 3 is arranged on one side of the bottom plate 1.
In this embodiment: the existing micro engine throttle valve opening and closing fine-tuning device controls the valve plate 37 by adopting a servo motor control system formed by the motor 33, thereby adjusting the opening and closing of the throttle valve body 2.
It should be noted that: the radian of the arc-shaped plate 45 is matched with the radian of the surface of the valve plate 37, so that the surface of the arc-shaped plate 45 can be tightly attached to the surface of the valve plate 37, and the reliability of the valve plate 37 is improved.
As shown in fig. 1-6:
the fine adjustment component 3 and the leakage prevention component 4 are arranged on the existing micro-miniature engine throttle switch fine adjustment device, so that the problems that in the prior art, the rotating angle of the rotating rod 36 cannot be detected, the opening and closing angle of the valve block 37 cannot be controlled conveniently, the accuracy of the engine throttle switch cannot be improved, fine adjustment of the engine throttle switch cannot be performed conveniently, the sealing performance of the communication part of the throttle pipe body 2 and the valve block 37 cannot be guaranteed, and the reliability of the valve block 37 cannot be guaranteed are solved.
Further, the method comprises the following steps:
combine above-mentioned, fine setting subassembly 3 includes casing 31, protective housing 32, motor 33, driving gear 34, half gear 35, bull stick 36 and valve block 37, one side fixed connection of casing 31 is in one side of bottom plate 1, protective housing 32 bottom fixed connection is at the top of bottom plate 1, the internal face at protective housing 32 is installed to the fuselage of motor 33, the one end fixed connection of driving gear 34 is at the output of motor 33, half gear 35's surface meshing connects on the surface of driving gear 34, the one end fixed connection of bull stick 36 is at the one end of half gear 35, the surface rotation of bull stick 36 is connected in the slotted hole that throttle body 2 surface was seted up, bolted connection is passed through on the surface of bull stick 36 to the one end of valve block 37, and the surperficial friction connection of valve block 37 is at the internal face of throttle body 2.
In this embodiment: through starter motor 33, it rotates to drive half gear 35 between casing 31 and end cover 311 through driving gear 34 by motor 33, it rotates at the inside of throttle body 2 to drive bull stick 36 by half gear 35 again, thereby it rotates at the inside of throttle body 2 to drive valve block 37, in the meantime, it rotates at angle sensor 362's inside to drive rotating seat 361 through bull stick 36, thereby it rotates at the inside of guide way 3621 to drive ball 3612 through fixing base 3611, again by the external control chip of angle sensor 362, can realize being convenient for detect the turned angle of bull stick 36, thereby be convenient for control the angle that opens and shuts of valve block 37, and then improve the accuracy nature to engine throttle body 2 switch, be convenient for finely tune it, avoid appearing the too big sensitivity and the precision that influence throttle body 2 of turned angle of bull stick 36, and convenient to use.
It should be noted that: one end of the rotating rod 36 penetrates through the surface of one end of the sealing sleeve 41 and extends to the surface of the other end, the surface of the rotating rod 36 is connected to the inner wall surface of the sealing tube 411 in a friction mode, one end of the half gear 35 is fixedly connected with a supporting shaft, and the supporting shaft is rotatably connected to the inner wall surface of the end cover 311 through a bearing.
Further, the following steps:
in combination with the above, the fine adjustment assembly 3 further includes an end cover 311, a rotating seat 361 and an angle sensor 362, wherein one side of the end cover 311 is connected to one side of the casing 31 far away from the bottom plate 1 through a bolt, one end of the rotating seat 361 is fixedly connected to one end of the rotating rod 36 far away from the half gear 35, the bottom end of the angle sensor 362 is installed on the surface of the throttle body 2, and the surface of the rotating seat 361 is rotatably connected to the inner wall surface of the angle sensor 362.
In this embodiment: drive through bull stick 36 and rotate seat 361 and rotate in angle sensor 362's inside, thereby drive ball 3612 through fixing base 3611 and rotate in guide way 3621's inside, by the external control chip of angle sensor 362 again, can realize being convenient for detect the turned angle of bull stick 36, thereby be convenient for control valve block 37's the angle that opens and shuts, and then improve the accuracy nature to engine throttle body 2 switch, be convenient for finely tune it, avoid appearing bull stick 36's the too big sensitivity and the precision that influence throttle body 2, and convenient to use.
It should be noted that: a plurality of fixed seats 3611 are fixedly connected to the surface of the rotating seat 361, balls 3612 are rotatably connected to the inside of the fixed seats 3611, guide grooves 3621 are formed in the inner wall surface of the angle sensor 362, and the surfaces of the balls 3612 are slidably connected to the inside of the guide grooves 3621.
Further, the method comprises the following steps:
combine above-mentioned, throttle valve body 2's surface mounting has leakage-proof assembly 4, leakage-proof assembly 4 includes seal cover 41, sleeve 42, reset spring 43, slider 44 and arc 45, the internal face fixed connection of seal cover 41 is on throttle valve body 2's surface, sleeve 42's fixed surface is connected in the inside of throttle valve body 2 wall body, reset spring 43 fixed connection is between sleeve 42 and slider 44, slider 44's surface sliding connection is at sleeve 42's internal face, the one end fixed connection of arc 45 is at slider 44's the other end, and the surface conflict of arc 45 is connected on the surface of valve block 37.
In this embodiment: when opening and closing throttle body 2, promote slider 44 through reset spring 43 in the inside of sleeve pipe 42 and remove to valve block 37 is hugged closely to extrusion arc 45, and then seals the junction of throttle body 2 and valve block 37, avoids taking place the problem of leaking because of sealed not strict, thereby can guarantee the leakproofness of throttle body 2 and valve block 37 intercommunication department, and then guarantees the reliability of valve block 37, and the practicality is higher.
It should be noted that: the sealing sleeve 41 is positioned right above the valve plate 37, the surface of the sealing sleeve 41 is fixedly connected with a sealing pipe 411, and a slotted hole formed in the surface of the throttle body 2 is communicated with the sealing pipe 411.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a microminiature engine throttle switch micromatic setting, includes bottom plate (1) and installs throttle body (2) at bottom plate (1) top, its characterized in that: a fine adjustment component (3) is arranged on one side of the bottom plate (1);
the fine adjustment assembly (3) comprises a shell (31), a protective shell (32), a motor (33), a driving gear (34), a half gear (35), a rotating rod (36) and a valve plate (37), one side of the shell (31) is fixedly connected to one side of the bottom plate (1), the bottom end of the protective shell (32) is fixedly connected to the top of the bottom plate (1), the inner wall surface of the protective shell (32) is installed on the machine body of the motor (33), one end of the driving gear (34) is fixedly connected to the output end of the motor (33), the surface of the half gear (35) is meshed with the surface of the driving gear (34), one end of the rotating rod (36) is fixedly connected to one end of the half gear (35), the surface of the rotating rod (36) is rotatably connected to a groove hole formed in the surface of the throttle valve body (2), and one end of the valve plate (37) is connected to the surface of the rotating rod (36) through a bolt, and the surface of the valve plate (37) is connected to the inner wall surface of the throttle valve pipe body (2) in a friction mode.
2. The microminiature engine throttle switch fine adjustment device of claim 1, characterized in that: fine setting subassembly (3) still include end cover (311), rotate seat (361) and angle sensor (362), the one side of end cover (311) is passed through bolted connection and is kept away from one side of bottom plate (1) in casing (31), the one end fixed connection of rotating seat (361) is in the one end that semi-gear (35) were kept away from in bull stick (36), the surface at throttle body (2) is installed to the bottom of angle sensor (362), the surperficial rotation of rotating seat (361) is connected the internal face at angle sensor (362).
3. The microminiature engine throttle switch fine adjustment device of claim 2, characterized in that: the surface of the rotating seat (361) is fixedly connected with a plurality of fixing seats (3611), balls (3612) are rotatably connected to the inner portions of the fixing seats (3611), guide grooves (3621) are formed in the inner wall face of the angle sensor (362), and the balls (3612) are slidably connected to the inner portions of the guide grooves (3621).
4. The microminiature engine throttle switch fine adjustment device of claim 1, characterized in that: the surface mounting of throttle valve body (2) has leakage-proof assembly (4), leakage-proof assembly (4) includes seal cover (41), sleeve pipe (42), reset spring (43), slider (44) and arc (45), the internal face fixed connection of seal cover (41) is on the surface of throttle valve body (2), the fixed surface connection of sleeve pipe (42) is in the inside of throttle valve body (2) wall body, reset spring (43) fixed connection is between sleeve pipe (42) and slider (44), the sliding surface connection of slider (44) is at the internal face of sleeve pipe (42), the one end fixed connection of arc (45) is at the other end of slider (44), just the surface conflict of arc (45) is connected on the surface of valve block (37).
5. The micro-miniature engine throttle switch fine adjustment device of claim 4, wherein: seal cover (41) are located valve block (37) directly over, just the fixed surface of seal cover (41) is connected with sealed tube (411).
6. The microminiature engine throttle switch fine adjustment device of claim 5, characterized in that: one end of the rotating rod (36) penetrates through the surface of one end of the sealing sleeve (41) and extends to the surface of the other end, and the surface of the rotating rod (36) is in friction connection with the inner wall surface of the sealing pipe (411).
7. The microminiature engine throttle switch fine adjustment device of claim 2, characterized in that: one end of the half gear (35) is fixedly connected with a support shaft, and the support shaft is rotatably connected to the inner wall surface of the end cover (311) through a bearing.
8. The microminiature engine throttle switch fine adjustment device of claim 5, characterized in that: the surface of the throttle body (2) is provided with a slotted hole which is communicated with the sealing pipe (411).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210339095.4A CN114738122A (en) | 2022-04-01 | 2022-04-01 | Micro-miniature engine throttle switch fine-tuning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210339095.4A CN114738122A (en) | 2022-04-01 | 2022-04-01 | Micro-miniature engine throttle switch fine-tuning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114738122A true CN114738122A (en) | 2022-07-12 |
Family
ID=82280151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210339095.4A Pending CN114738122A (en) | 2022-04-01 | 2022-04-01 | Micro-miniature engine throttle switch fine-tuning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114738122A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4719795A (en) * | 1985-11-08 | 1988-01-19 | Aisan Kogyo Kabushiki Kaisha | Throttle valve opening sensor |
| JPH0893533A (en) * | 1994-09-29 | 1996-04-09 | Hitachi Ltd | Throttle valve controller for internal combustion engine |
| WO1997016638A1 (en) * | 1995-10-28 | 1997-05-09 | Robert Bosch Gmbh | Throttle valve manifold |
| CN209724497U (en) * | 2019-04-03 | 2019-12-03 | 浙江鸿科电气有限公司 | A kind of novel throttle body assembly |
| CN212959897U (en) * | 2020-08-18 | 2021-04-13 | 渤海阀门集团有限公司 | Electric valve |
-
2022
- 2022-04-01 CN CN202210339095.4A patent/CN114738122A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4719795A (en) * | 1985-11-08 | 1988-01-19 | Aisan Kogyo Kabushiki Kaisha | Throttle valve opening sensor |
| JPH0893533A (en) * | 1994-09-29 | 1996-04-09 | Hitachi Ltd | Throttle valve controller for internal combustion engine |
| WO1997016638A1 (en) * | 1995-10-28 | 1997-05-09 | Robert Bosch Gmbh | Throttle valve manifold |
| CN209724497U (en) * | 2019-04-03 | 2019-12-03 | 浙江鸿科电气有限公司 | A kind of novel throttle body assembly |
| CN212959897U (en) * | 2020-08-18 | 2021-04-13 | 渤海阀门集团有限公司 | Electric valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2359555T3 (en) | EXHAUST GAS RECIRCULATION DEVICE. | |
| WO2020134613A1 (en) | Ball valve | |
| US20030150678A1 (en) | Damper device that uses viscous fluid and its manufacturing method | |
| CN110966434B (en) | Ball valve | |
| CN114738122A (en) | Micro-miniature engine throttle switch fine-tuning device | |
| CN109538945A (en) | Universal vehicle-mounted fuel systems leak detecting device | |
| CN111075986A (en) | Pneumatic actuator for driving regulating valve | |
| CN220011425U (en) | Quantitative discharging device | |
| CN209294049U (en) | A kind of sealing device of air compressor machine | |
| CN111350844B (en) | Ball valve | |
| CN217897608U (en) | Self-lubricating silence door closer | |
| KR20020081384A (en) | Flap valve | |
| CN208565740U (en) | A kind of gas meter motor valve | |
| CN220955841U (en) | Intake manifold runner control regulating valve | |
| RU63015U1 (en) | SHIELD SHUTTER | |
| JP2013219949A (en) | Actuator for fuel shut-off valve | |
| KR100493740B1 (en) | Propeller type water meter having check valve for prevention backward flowing and control water supple | |
| CN202690204U (en) | Fail-safe silicone oil clutch | |
| CN102720579A (en) | Anti-mistake silicone oil clutch | |
| CN219413556U (en) | Novel electric butterfly valve | |
| CN211287908U (en) | Automobile anti-leakage throttle valve assembly | |
| CN209129701U (en) | A kind of rotary valve structure of no camshaft | |
| CN216112233U (en) | Eccentric air throttle | |
| CN110805731A (en) | Wide-flow safety type intelligent gas meter motor valve | |
| CN108644448A (en) | A kind of gas meter motor valve |
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 |