CN117759801A - Water-cooling leakage-proof connecting structure of motor - Google Patents

Water-cooling leakage-proof connecting structure of motor Download PDF

Info

Publication number
CN117759801A
CN117759801A CN202410196448.9A CN202410196448A CN117759801A CN 117759801 A CN117759801 A CN 117759801A CN 202410196448 A CN202410196448 A CN 202410196448A CN 117759801 A CN117759801 A CN 117759801A
Authority
CN
China
Prior art keywords
motor
cooling
water
connecting structure
taut
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.)
Granted
Application number
CN202410196448.9A
Other languages
Chinese (zh)
Other versions
CN117759801B (en
Inventor
许斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nantong Jinchi Mechanical Electric Co ltd
Original Assignee
Nantong Jinchi Mechanical Electric Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nantong Jinchi Mechanical Electric Co ltd filed Critical Nantong Jinchi Mechanical Electric Co ltd
Priority to CN202410196448.9A priority Critical patent/CN117759801B/en
Publication of CN117759801A publication Critical patent/CN117759801A/en
Application granted granted Critical
Publication of CN117759801B publication Critical patent/CN117759801B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

The invention provides a water-cooling leakage-proof connecting structure of a motor, which relates to the field of slip ring motors and comprises the following components: the leakage-proof assembly consists of a fastening mechanism and an on-off mechanism, the problem that the connecting structure of an inlet and an outlet of a cooling cavity of an existing slip ring motor and a pipeline is tightly connected by friction force and is easy to fall off, and a connecting piece is free of an automatic blocking structure when being removed from installation, so that cooling liquid can flow out to waste and pollute the working environment is solved.

Description

Water-cooling leakage-proof connecting structure of motor
Technical Field
the invention relates to the technical field of slip ring motors, in particular to a water-cooling leakage-proof connecting structure of a motor.
Background
In the mechanical equipment with larger capacity and higher requirement on rotation torque, a slip ring motor is generally selected for driving, and a large amount of heat is emitted from the slip ring motor in the use process, so that the slip ring motor needs to be cooled by cooling equipment to ensure the normal work of the motor, at present, the most common cooling mode of the slip ring motor is water cooling, the two groups of pipelines are connected with a cooling liquid inlet and outlet of the motor, and then cooling and heat dissipation operation of the motor is realized by circulating cooling liquid in and out of a cooling cavity of the motor.
However, for the connection structure of the inlet and outlet of the cooling cavity of the slip ring motor and the pipeline at present, the connection structure is not provided with a tensioning structure, the connection is tightly carried out by means of friction force, the phenomenon that the cooling failure is caused by easy falling off during use occurs, and the inside of the connection piece is not provided with an automatic blocking structure during the removal of the installation, so that the inlet and outlet of the cooling cavity of the motor and the cooling liquid in the cooling liquid pipe can flow out to waste and pollute the working environment, the flexibility is poor, and the practicability is low.
Disclosure of Invention
In view of the above, the invention provides a water-cooling leakage-proof connection structure of a motor, which is provided with a leakage-proof assembly, wherein the leakage-proof assembly has two functions, namely, the plug connector is continuously pulled out of the fixed connector, so that the phenomena of failure of a cooling function of the motor and failure of circulation of cooling liquid caused by accidental falling of the plug connector from the fixed connector are avoided, the use is stable, and the internal channels of the plug connector and the fixed connector can be automatically plugged by an on-off mechanism after the plug connection and installation relation between the plug connector and the fixed connector is relieved, so that the phenomena of leakage waste of cooling liquid in a cooling cavity and a cooling liquid pipeline of the motor and pollution to the working environment are avoided, and the internal cooling channels can be automatically restored to be smooth after the plug connector and the fixed connector are reinstalled, so that the cooling and heat dissipation of the motor are realized, the operation is convenient, the use is flexible, the stability and practicability are extremely strong.
The invention provides a water-cooling leakage-proof connecting structure of a motor, which specifically comprises the following components: the connecting assembly comprises a plug connector and a fixed connector, wherein the plug connector is inserted into the fixed connector, the side surface of the plug connector is connected with the cooling liquid pipeline, and the fixed connector is fixedly arranged outside a cooling liquid interface of the motor; further comprises: the anti-leakage assembly consists of a fastening mechanism and an on-off mechanism, the fastening mechanism comprises a movable seat, an unlocking disc and a tensioning block, the movable seat is inserted and connected to the outside of the plug connector, the unlocking disc is rotationally connected to the inside of the movable seat, and the tensioning block is radially inserted and connected to the inside of the movable seat; the on-off mechanism is provided with two groups, and comprises a positioning disc, an opening and closing disc and a control pressure rod, wherein the two groups of the positioning discs of the on-off mechanism are respectively and fixedly arranged inside a liquid channel of the plug connector and the fixed connector, the opening and closing disc is rotationally connected to the side face of the positioning disc, and a rod body of the control pressure rod is inserted into the positioning disc and the opening and closing disc.
Further, a tensioning tension spring is arranged on the side face of the movable seat, and two ends of the tensioning tension spring are fixedly connected to the side face of the movable seat and the outer portion of the plug connector respectively.
Furthermore, the outside of fixed joint is equipped with taut tooth's socket, and the cross-sectional shape of taut tooth's socket single tooth's socket and taut piece bottom block is right triangle-shaped, and the piece of taut piece bottom right triangle-shaped cross-section is pegged graft in the inside of taut tooth's socket, and when taut piece moved towards the direction of keeping away from fixed joint, the tooth's socket straight flange of taut tooth's socket and taut piece bottom straight flange joint each other.
further, the inside of tensioning piece is equipped with dodges the top spring, and dodges the both ends of top spring and support respectively in the inside of tensioning piece and the inside of removing the seat.
Further, the side of tensioning piece is equipped with the unblock post, and the outside of unblock dish is equipped with curved unblock groove, and the unblock post is pegged graft in the inside of unblock groove.
Furthermore, the inside of the disk body of the positioning disk and the opening and closing disk is provided with three on-off holes which are uniformly arranged in a ring shape.
Further, the outside of the rod body of the control pressure rod is provided with a spiral opening and closing groove, and the inside of the opening and closing disc is provided with an opening and closing protrusion which is inserted into the opening and closing groove.
Further, the side of control depression bar is equipped with the top spring that resets, and the both ends of top spring that resets are supported respectively in the side of control depression bar and the side of positioning disk, and when the control depression bar does not receive external force extrusion under the effect of top spring that resets, dislocation shutoff each other between the break-make hole on positioning disk and the headstock gear.
Further, the boss of the plug connector and the boss of the fixed connector are provided with sealing gaskets made of rubber materials.
The leak-proof assembly has the following two beneficial effects:
1. The plug connector can be continuously pulled out of the fixed connector, so that the phenomenon that the cooling function of the motor is invalid and the cooling liquid is circulated and invalid due to unexpected falling of the plug connector from the fixed connector is avoided, and the use is stable.
2. After the plugging and installation relation between the plug connector and the fixed connector is relieved, the internal channels of the plug connector and the fixed connector can be automatically plugged by the on-off mechanism, so that the phenomena of leakage and waste of cooling liquid in the motor cooling cavity and the cooling liquid pipeline and pollution to the working environment are avoided, and the internal cooling channels can be automatically restored to be smooth after the plug connector and the fixed connector are reinstalled, so that the cooling and heat dissipation of the motor are realized, the operation is convenient, and the use is flexible.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
the drawings described below are only for illustration of some embodiments of the invention and are not intended to limit the invention.
in the drawings:
fig. 1 is a schematic view of the overall structure of the connection assembly of the present invention in a plug-in mounting state.
Fig. 2 is a schematic view of the structure of the inside of fig. 1 according to the present invention.
Fig. 3 is a schematic structural view of the fixing joint of the present invention.
fig. 4 is a schematic view of the structure of the plug connector and the fastening mechanism of the present invention after being disassembled.
fig. 5 is a schematic view of the structure of the disassembled on-off mechanism of the present invention.
fig. 6 is a schematic view illustrating the structure of the inside of the unlocking disc of fig. 1 when the present invention is rotated.
fig. 7 is a schematic view of the structure of the plug connector of the present invention when the plug connector is not plugged into the fixed connector.
fig. 8 is a schematic view of the structure of the inside of the fixing connector of the present invention when the fixing connector is not inserted into the plugging connector.
fig. 9 is an enlarged schematic view of the structure of fig. 2 according to the present invention.
Fig. 10 is an enlarged schematic view of the structure of the B part of fig. 6 according to the present invention.
List of reference numerals
1. A connection assembly; 101. plugging and unplugging the connector; 102. fixing the joint; 1021. tightening the tooth slot; 2. a fastening mechanism; 201. a movable seat; 2011. tensioning the tension spring; 202. unlocking the disc; 2021. unlocking grooves; 203. tensioning the block; 2031. avoiding the top spring; 2032. unlocking the column; 3. an on-off mechanism; 301. a positioning plate; 3011. a hole is opened and closed; 302. a start-stop disc; 3021. opening and closing the bulge; 303. a control pressure lever; 3031. opening and closing the groove; 3032. and resetting the top spring.
Detailed Description
the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments of the present invention.
please refer to fig. 1 to 10:
Example 1: the invention provides a water-cooling leakage-proof connecting structure of a motor, which comprises a connecting component 1, wherein the connecting component 1 comprises a plug connector 101 and a fixed connector 102, the plug connector 101 is inserted into the fixed connector 102, the side surface of the plug connector 101 is connected with a cooling liquid pipeline, and the fixed connector 102 is fixedly arranged outside a cooling liquid interface of the motor; further comprises: the anti-leakage assembly comprises a fastening mechanism 2, the fastening mechanism 2 comprises a movable seat 201, an unlocking disc 202 and a tensioning block 203, the movable seat 201 is inserted into the outside of the plug connector 101, the unlocking disc 202 is rotationally connected to the inside of the movable seat 201, and the tensioning block 203 is radially inserted into the inside of the movable seat 201.
The side of the movable seat 201 is provided with a tension spring 2011, two ends of the tension spring 2011 are respectively and fixedly connected to the side of the movable seat 201 and the outside of the plug connector 101, and tension force close to the fixed connector 102 can be continuously applied to the plug connector 101 through the tension spring 2011 when the connecting assembly 1 is in an installation state, so that the installation state between the connecting assemblies 1 is ensured, the use is stable, the phenomenon that the plug connector 101 accidentally drops off is avoided, and the use is stable.
Wherein, the outside of fixed joint 102 is equipped with taut tooth's socket 1021, and the cross-sectional shape of taut tooth's socket 1021 single tooth's socket and taut piece 203 bottom block is right triangle-shaped, taut piece 203 bottom right triangle-section's block is pegged graft in taut tooth's socket 1021's inside, and when taut piece 203 moves towards the direction of keeping away from fixed joint 102, taut tooth's socket straight flange and taut piece 203 bottom straight flange looks joint each other, taut piece 203's inside is equipped with dodges top spring 2031, and dodge the both ends of top spring 2031 and support respectively in taut piece 203's inside and the inside of movable seat 201, this design makes the plug joint 101 can be smooth and easy to insert to the outside of fixed joint 102, simple to operate.
Wherein, the side of tensioning piece 203 is equipped with unblock post 2032, and the outside of unblock dish 202 is equipped with curved unblock groove 2021, and unblock post 2032 peg graft in the inside of unblock groove 2021, can release the joint relation between tensioning piece 203 bottom and the tensioning tooth's socket 1021 after rotating unblock dish 202 to convenient plug connector 101 pulls out the operation of fixed joint 102, it is convenient to dismantle.
Specific use and action of the embodiment: according to the invention, after the plug connector 101 is inserted into the fixed connector 102, the plug connector 101 is pulled out of the fixed connector 102 through the fastening mechanism 2, the plug installation of the connecting component 1 can be completed, and then cooling liquid can enter the cooling cavity of the motor through the cooling liquid pipeline and realize the operation of circulating flow heat dissipation and cooling;
When the installation grafting relation between the connecting components 1 needs to be released, only the unlocking disc 202 needs to be rotated, and the unlocking groove 2021 of the unlocking disc 202 can drive the tensioning block 203 to move towards the inside of the movable seat 201 through the unlocking column 2032 and compress to avoid the top spring 2031, so that the clamping relation between the straight edge at the bottom of the tensioning block 203 and the straight edge of the tooth groove of the tensioning tooth groove 1021 is released, and the plug connector 101 can be driven to be pulled out of the inside of the fixed connector 102 after the movable seat 201 is directly pulled backwards, so that the dismounting operation is realized.
Example 2: on the basis of embodiment 1, the leak-proof assembly further comprises an on-off mechanism 3, the on-off mechanism 3 is provided with two groups, the on-off mechanism 3 comprises a positioning disc 301, an opening and closing disc 302 and a control pressure rod 303, the positioning discs 301 of the two groups of on-off mechanism 3 are respectively and fixedly arranged in the liquid channels of the plug connector 101 and the fixed connector 102, the opening and closing disc 302 is rotationally connected to the side face of the positioning disc 301, and the rod body of the control pressure rod 303 is inserted into the positioning disc 301 and the opening and closing disc 302.
Wherein, the disk body of positioning disk 301 and headstock disk 302 is inside all to be equipped with three and is annular evenly arranged's break-make hole 3011, through the change of headstock disk 302 angle of use, can realize the break-make state of coupling assembling 1 internal channel.
Wherein, the body of rod outside of control depression bar 303 is equipped with the heliciform and opens and close groove 3031, and the inside of opening and close dish 302 is equipped with opens and close protruding 3021, opens and closes protruding 3021 and peg graft in the inside of opening and close groove 3031, and control depression bar 303 can control the angle of use of opening and close dish 302, convenient to use.
Wherein, the side of control depression bar 303 is equipped with the top spring 3032 that resets, and the both ends of top spring 3032 that resets support respectively in the side of control depression bar 303 and the side of positioning disk 301, when control depression bar 303 does not receive external force extrusion under the effect of top spring 3032 that resets, the shutoff of misplacing each other between the break-make hole 3011 on positioning disk 301 and the headstock gear 302, when this design makes plug joint 101 and fixed joint 102 be in the installation state of pegging graft, its internal passage is the closed state, avoid motor cooling cavity and the inside coolant leakage waste of coolant pipe and the phenomenon emergence of polluted environment.
Specific use and action of the embodiment: in the invention, when the plug connector 101 and the fixed connector 102 are in a state of non-plug installation, the control pressure rods 303 of the on-off mechanisms 3 in the plug connector 101 and the fixed connector 102 are not extruded by external force and can be automatically in a reset state, namely, the on-off holes 3011 on the locating plate 301 and the on-off plate 302 are mutually staggered to be blocked at the moment, so that leakage of cooling liquid in a cooling cavity of a motor and a cooling liquid pipeline is avoided, after the plug connector 101 and the fixed connector 102 are plugged and installed, the control pressure rods 303 of the two groups of on-off mechanisms 3 can be mutually extruded, so that the control pressure rods 303 can move to one side relative to the locating plate 301, the on-off grooves 3031 can drive the on-off plate 302 to rotate through the on-off protrusions 3021 when the control pressure rods 303 move, and the on-off holes 3011 on the locating plate 301 and the on-off plate 302 can be mutually overlapped when the on-off plates 302 rotate, so that internal channels of the connecting assembly 1 are opened for circulating cooling liquid circulation, the operation is convenient, and after the plug connector 101 is pulled out of the inside the fixed connector 102, the two groups of on-off mechanisms 3 can automatically recover to the state of channels under the action of the reset spring 3032 to be stable for use.
Example 3: on the basis of the embodiment 1 and the embodiment 2, the boss positions of the plug connector 101 and the fixed connector 102 are respectively provided with a rubber sealing gasket, and the design enhances the sealing performance of the connecting assembly 1 after the plug installation, further avoids the occurrence of the leakage phenomenon of cooling liquid in the use process, and is stable in use.

Claims (9)

1. A motor water-cooling leak-proof connection structure, comprising: the connecting assembly (1), the connecting assembly (1) comprises a plug connector (101) and a fixed connector (102), the plug connector (101) is inserted into the fixed connector (102), the side surface of the plug connector (101) is connected with a cooling liquid pipeline, and the fixed connector (102) is fixedly arranged outside a cooling liquid interface of the motor; characterized by further comprising: the anti-leakage assembly consists of a fastening mechanism (2) and an on-off mechanism (3), the fastening mechanism (2) comprises a movable seat (201), an unlocking disc (202) and a tensioning block (203), the movable seat (201) is inserted and connected to the outside of the plug connector (101), the unlocking disc (202) is rotationally connected to the inside of the movable seat (201), and the tensioning block (203) is radially inserted and connected to the inside of the movable seat (201); the on-off mechanism (3), on-off mechanism (3) are equipped with two sets of, and on-off mechanism (3) are including positioning disk (301), headstock gear (302) and control depression bar (303), two sets of positioning disk (301) of on-off mechanism (3) are fixed mounting respectively inside the liquid channel of plug joint (101) and fixed joint (102), headstock gear (302) rotate and connect the side at positioning disk (301), and the body of rod of control depression bar (303) is pegged graft in the inside of positioning disk (301) and headstock gear (302).
2. the water-cooling leak-proof connecting structure of a motor as defined in claim 1, wherein: the side of the movable seat (201) is provided with a tensioning tension spring (2011), and two ends of the tensioning tension spring (2011) are respectively and fixedly connected to the side of the movable seat (201) and the outside of the plug connector (101).
3. The water-cooling leak-proof connecting structure of a motor as defined in claim 2, wherein: the outside of fixed joint (102) is equipped with taut tooth groove (1021), and the cross-sectional shape of taut tooth groove (1021) single tooth groove and taut piece (203) bottom block is right triangle-shaped, and the block of taut piece (203) bottom right triangle-section is pegged graft in the inside of taut tooth groove (1021), and when taut piece (203) are moved towards the direction of keeping away from fixed joint (102) the tooth groove straight flange of taut tooth groove (1021) and taut piece (203) bottom straight flange looks joint each other.
4. A motor water-cooling leak-proof connecting structure as defined in claim 3, wherein: the inside of tensioning piece (203) is equipped with dodges top spring (2031), and dodges the both ends of top spring (2031) and support in the inside of tensioning piece (203) and the inside of moving seat (201) respectively.
5. the water-cooling leak-proof connecting structure of a motor as defined in claim 4, wherein: an unlocking column (2032) is arranged on the side face of the tensioning block (203), an arc-shaped unlocking groove (2021) is formed in the outer portion of the unlocking disc (202), and the unlocking column (2032) is inserted into the unlocking groove (2021).
6. The water-cooling leak-proof connecting structure of a motor as defined in claim 1, wherein: the positioning disc (301) and the opening and closing disc (302) are provided with three on-off holes (3011) which are annularly and uniformly arranged in the disc body.
7. The water-cooling leak-proof connecting structure of a motor as defined in claim 6, wherein: the outside of the rod body of the control pressure lever (303) is provided with a spiral opening and closing groove (3031), and the inside of the opening and closing disc (302) is provided with an opening and closing protrusion (3021), and the opening and closing protrusion (3021) is inserted into the opening and closing groove (3031).
8. The water-cooling leak-proof connecting structure of a motor as defined in claim 7, wherein: the side of control depression bar (303) is equipped with and resets top spring (3032), and the both ends of restoring top spring (3032) support respectively in the side of control depression bar (303) and the side of positioning disk (301), and when control depression bar (303) do not receive external force extrusion under the effect of restoring top spring (3032), dislocation shutoff each other between break-make hole (3011) on positioning disk (301) and headstock gear (302).
9. The water-cooling leak-proof connecting structure of a motor as defined in claim 1, wherein: the boss parts of the plug connector (101) and the fixed connector (102) are respectively provided with a rubber sealing gasket.
CN202410196448.9A 2024-02-22 2024-02-22 Water-cooling leakage-proof connecting structure of motor Active CN117759801B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410196448.9A CN117759801B (en) 2024-02-22 2024-02-22 Water-cooling leakage-proof connecting structure of motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410196448.9A CN117759801B (en) 2024-02-22 2024-02-22 Water-cooling leakage-proof connecting structure of motor

Publications (2)

Publication Number Publication Date
CN117759801A true CN117759801A (en) 2024-03-26
CN117759801B CN117759801B (en) 2024-04-23

Family

ID=90326077

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410196448.9A Active CN117759801B (en) 2024-02-22 2024-02-22 Water-cooling leakage-proof connecting structure of motor

Country Status (1)

Country Link
CN (1) CN117759801B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120019047A (en) * 2010-08-24 2012-03-06 동화산업 주식회사 Installation apparatus of plug for stopping gas flowing in gas pipe
CN110319288A (en) * 2019-07-03 2019-10-11 民勤县陇宇机械制造有限公司 A kind of self-propelled anti-breaking device irrigated with agricultural machinery
CN114655052A (en) * 2022-04-25 2022-06-24 严国昌 Safe type that possesses crashproof structure fills electric pile
CN116191128A (en) * 2023-03-08 2023-05-30 江苏鼎端环保科技有限公司 Environment monitoring sensor and use method
CN117267814A (en) * 2023-10-16 2023-12-22 广东海洋大学 Double-station solar heat pump energy-saving air conditioning unit of clean room
CN117508037A (en) * 2023-12-05 2024-02-06 浙江峰驰科技有限公司 Cloud computing-based embedded vehicle-mounted electronic equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120019047A (en) * 2010-08-24 2012-03-06 동화산업 주식회사 Installation apparatus of plug for stopping gas flowing in gas pipe
CN110319288A (en) * 2019-07-03 2019-10-11 民勤县陇宇机械制造有限公司 A kind of self-propelled anti-breaking device irrigated with agricultural machinery
CN114655052A (en) * 2022-04-25 2022-06-24 严国昌 Safe type that possesses crashproof structure fills electric pile
CN116191128A (en) * 2023-03-08 2023-05-30 江苏鼎端环保科技有限公司 Environment monitoring sensor and use method
CN117267814A (en) * 2023-10-16 2023-12-22 广东海洋大学 Double-station solar heat pump energy-saving air conditioning unit of clean room
CN117508037A (en) * 2023-12-05 2024-02-06 浙江峰驰科技有限公司 Cloud computing-based embedded vehicle-mounted electronic equipment

Also Published As

Publication number Publication date
CN117759801B (en) 2024-04-23

Similar Documents

Publication Publication Date Title
US5304312A (en) Filter assembly includng filter unit having deformable sealing end caps
CN117759801B (en) Water-cooling leakage-proof connecting structure of motor
CN213236106U (en) Hard seal butterfly valve
CN216062309U (en) Integrated water route board and applied this integrated water route board's filter
CN116624683A (en) Preheating chamber blast pipe connecting device
CN210003836U (en) butterfly valve with upper limit locking device
CN112082024A (en) Rotary quick-locking type fluid connector assembly
CN219388651U (en) Water drain valve and vehicle
CN221075671U (en) Cooling system shunting pipe joint
CN217464860U (en) Filter equipment and air conditioner
CN210399456U (en) Anti-seepage system for connecting drain pipe with air conditioner pipe
CN218468298U (en) Anti-freezing ball valve
CN217874300U (en) Bidirectional hard seal adjusting cut-off ball valve
CN218914114U (en) Pneumatic pipeline quick connector
CN218267355U (en) Compressed air leakage-proof ball valve
CN218718926U (en) Detachable electric blind plate valve
CN218267273U (en) Triple eccentric butterfly valve
CN217301685U (en) High-temperature-resistant ball valve
CN213016932U (en) Integrated mechanical seal
CN220956850U (en) Butterfly valve and ventilation system thereof
CN218207860U (en) High leakproofness stop valve
CN215634964U (en) Sealing element and sealing structure with same
CN221300136U (en) Flange butt-joint type electric butterfly valve
CN215980860U (en) Dual-positioning multilayer hard-sealing turbine butterfly valve
CN220791490U (en) Prevent leaking and prevent gear pump of impurity

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