CN110529663B - Flexible air pipe connecting device based on clamp clamping principle - Google Patents
Flexible air pipe connecting device based on clamp clamping principle Download PDFInfo
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- CN110529663B CN110529663B CN201910860419.7A CN201910860419A CN110529663B CN 110529663 B CN110529663 B CN 110529663B CN 201910860419 A CN201910860419 A CN 201910860419A CN 110529663 B CN110529663 B CN 110529663B
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- 238000007789 sealing Methods 0.000 description 6
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- 239000004744 fabric Substances 0.000 description 3
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- 230000004075 alteration Effects 0.000 description 1
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- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/16—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe
- F16L3/20—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets with special provision allowing movement of the pipe allowing movement in transverse direction
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Abstract
The invention relates to the technical field of soft air pipe connection, and discloses a soft air pipe connecting device based on a hoop clamping principle. This hose connecting device based on clamp presss from both sides tight principle through the cooperation of clamp clamping piece and trapezoidal snap ring, has reached the effect that utilizes the clamp to press from both sides tight hose, prevents the leakage of junction, through the cooperation of annulus and feed ring, rotatory feed ring can drive the annulus to the central removal of communicating pipe to make the clamp clamping piece press from both sides tight hose, guarantee the leakproofness of connecting, easy operation simultaneously, connection efficiency is high.
Description
Technical Field
The invention relates to the technical field of flexible air ducts, in particular to a flexible air duct connecting device based on a hoop clamping principle.
Background
The flexible air pipe is a flexible air pipeline woven by a special fiber, and the outer pipe of the flexible air pipe is just like a large cloth belt, so the flexible air pipe is generally called as an air distribution pipe, a cloth belt air pipe, a cloth air pipe, a fiber air pipe and the like in China, is mainly used as an air flow transmission function, and is widely applied to public places such as superstores, factories, gymnasiums and the like.
Traditional air hose all utilizes flange joint usually, connect air hose and flange earlier, pass through bolt fastening it with two flanges all around again, reach the purpose of connecting, this kind of connection method is connected trouble, and the connection of air hose and flange produces easily sealed insecurely, produce easily and reveal, when needs are dismantled, still need unscrew the screw of connection again, it is all very troublesome to make the installation dismantle, waste time and energy, work operating efficiency is low, and the air hose seals the problem that produces easily and leaks.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a flexible air duct connecting device based on a hoop clamping principle, which has the advantages of simple operation, convenient installation and disassembly, high connecting working efficiency and good sealing efficiency, and solves the problems of simple operation, troublesome installation and disassembly, high connecting working efficiency and easy leakage.
(II) technical scheme
In order to realize the purposes of simple operation, convenient assembly and disassembly, high connecting work efficiency and good sealing efficiency, the invention provides the following technical scheme: the utility model provides a soft tuber pipe connecting device based on clamp presss from both sides tight principle, includes communicating pipe, connector, ring channel, clamp clamping piece, annular lug, trapezoidal snap ring, annulus, feeds the ring, connects neck, ring groove, annular buckle, rotatory side tooth, gear, bearing, fixed block, rotatory bayonet lock, rotary rod, bayonet lock groove, handle, locating frame, locating hole.
The position and connection relation of the structures are as follows:
the outer part of the communicating pipe is fixedly connected with a connecting port, the surface of the connecting port is provided with an annular groove, the outer part of the connecting port is movably connected with a clamp clamping piece, the inner surface of the clamp clamping piece is provided with an annular convex block, the outer part of the clamp clamping piece is movably connected with a trapezoidal snap ring, the outer part of the trapezoidal snap ring is fixedly connected with an annular sleeve, the inner part of the annular sleeve is movably connected with a feeding ring, the outer part of the feeding ring is fixedly connected with a connecting neck, the inner part of the connecting neck is provided with an annular clamping groove, the inner part of the annular clamping groove is movably connected with an annular buckle, the outer part of the connecting neck is fixedly connected with a rotating side tooth, the outer part of the rotating side tooth is movably connected with a gear, the inner part of, the outside swing joint of rotatory bayonet lock has the rotary rod, the bayonet lock groove has been seted up to the inside of rotary rod, the inside swing joint of rotary rod has the handle, the outside swing joint of rotary rod has the locating frame, the locating hole has been seted up to the inside of locating frame.
Preferably, the number of the connectors is two, the connectors are respectively connected to two ends of the communicating pipe, each connector is trapezoidal, and the wide end of each connector is connected with the communicating pipe.
Preferably, the annular grooves are respectively formed in the two connecting ports, and three to five connecting ports are formed in each connecting port.
Preferably, the clamp gaskets are two and are respectively connected to the outer part of each connecting port, the cross section of each clamp gasket is trapezoidal, and the narrow end of each clamp gasket is provided with a clamping groove.
Preferably, trapezoidal snap ring and annular sleeve respectively have two, and its mutual fixed connection respectively, and annular sleeve's inside is seted up threadedly, and trapezoidal snap ring and annular sleeve cup joint with communicating pipe activity.
Preferably, feed ring, connecting neck, ring groove and rotatory side tooth respectively have two, divide equally two sets of mutual fixed connection respectively, and feed the surface of ring and offer the screw thread, feed the external diameter of ring and the internal diameter size adaptation of annular sleeve, two rotatory side teeth respectively with gear swing joint, two feed ring, connecting neck, ring groove and rotatory side tooth are radial symmetry about the center of communicating pipe, and respectively with communicating pipe swing joint.
Preferably, the annular buckles are two, are respectively and movably connected with the two annular clamping grooves and are fixedly connected with the communicating pipe, and the two annular buckles are radially symmetrical about the center of the communicating pipe.
Preferably, the gear, the bearing, the fixing blocks and the rotary clamping pins are respectively provided with two parts which are respectively and symmetrically distributed about the axis of the communicating pipe, the two fixing blocks are fixedly connected with the communicating pipe, and anti-slip patterns are arranged outside the two rotary clamping pins.
Preferably, the inner wall of the clamp pin groove is provided with anti-slip patterns, and the inner diameter of the clamp pin groove is matched with the diameter of the rotary clamp pin.
Preferably, the number of the positioning frames and the number of the positioning holes are two, the positioning frames and the positioning holes are symmetrical about the axis of the communicating pipe, the positioning frames are fixedly connected with the communicating pipe, and the diameter of each positioning hole is matched with the diameter of the corresponding rotary rod.
(III) advantageous effects
Compared with the prior art, the invention provides a flexible air pipe connecting device based on a hoop clamping principle, which has the following beneficial effects:
1. this soft tuber pipe connecting device based on clamp presss from both sides tight principle uses through the cooperation of communicating pipe and connector to reached and become two flange joint and be communicating pipe lug connection, can effectively guarantee the leakproofness that the soft tuber pipe is connected.
2. This soft tuber pipe connecting device based on clamp presss from both sides tight principle uses through the cooperation of clamp clamping piece and trapezoidal snap ring to reached and utilized the clamp to press from both sides the effect of tight soft tuber pipe, effectively reached soft tuber pipe and connector sealing connection, guaranteed sealed effect, prevent the leakage of soft tuber pipe junction.
3. This hose connecting device based on clamp presss from both sides tight principle uses through the cooperation of annular sleeve and feed ring, and rotatory feed ring can drive the annular sleeve and remove to the center of communicating pipe to make the clamp clamping piece press from both sides tight hose, guarantee the leakproofness of connecting, easy operation simultaneously, connection efficiency is high.
4. This air hose connecting device based on clamp tight principle uses through the cooperation of rotatory side tooth and gear, makes the rotatory ring rotation that feeds that drives of gear to drive the ring casing and feed, reach the effect that presss from both sides tight air hose, screwed connection becomes gear swivelling joint, and the connection method is simpler, and it is more convenient to install and dismantle, and operating efficiency is higher.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the connection of the gear, the side teeth and the fixing block according to the present invention;
FIG. 3 is a cross-sectional view of a structural attachment portion of the present invention;
FIG. 4 is a schematic cross-sectional view of the trapezoidal snap ring and annular sleeve connection of the present invention;
FIG. 5 is a cross-sectional view of a clip of the present invention;
FIG. 6 is a top view of a clip of the present invention;
FIG. 7 is a schematic cross-sectional view of a rotary lever and handle connection according to the present invention;
FIG. 8 is a schematic view of the overall connection initial state of the structure of the present invention.
In the figure: the device comprises a communication pipe 1, a connection port 2, an annular groove 3, a clamp clip 4, an annular bump 5, a trapezoidal snap ring 6, an annular sleeve 7, a feed ring 8, a connection neck 9, an annular clamping groove 10, an annular buckle 11, a rotary side tooth 12, a gear 13, a bearing 14, a fixed block 15, a rotary clamping pin 16, a rotary rod 17, a clamping pin groove 18, a handle 19, a positioning frame 20 and a positioning hole 21.
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.
Referring to fig. 1-8, a flexible air hose connecting device based on the clamp clamping principle includes a communicating pipe 1, a connector 2, an annular groove 3, a clamp clip 4, an annular protrusion 5, a trapezoidal snap ring 6, an annular sleeve 7, a feeding ring 8, a connecting neck 9, an annular snap groove 10, an annular buckle 11, a rotating side tooth 12, a gear 13, a bearing 14, a fixing block 15, a rotating snap pin 16, a rotating rod 17, a snap pin groove 18, a handle 19, a positioning frame 20, and a positioning hole 21.
The position and connection relation of the structures are as follows:
the external part of the communicating pipe 1 is fixedly connected with two connectors 2, the connectors 2 are respectively connected with two ends of the communicating pipe 1, each connector 2 is trapezoidal, one wide end is connected with the communicating pipe 1, the direct connection of the communicating pipe 1 by two pieces of flange connection is realized by matching the communicating pipe 1 and the connectors 2, the sealing performance of the connection of the soft air pipe can be effectively ensured, the surface of the connector 2 is provided with an annular groove 3, the annular grooves 3 are respectively arranged on the two connectors 2, three to five connectors 2 are arranged on each connector 2, the external part of the connector 2 is movably connected with a hoop clamping piece 4, two hoop gaskets 4 are arranged and are respectively connected with the external part of each connector 2, the cross section of each connector 2 is trapezoidal, the narrow end is provided with a clamping groove, the inner surface of each hoop clamping piece 4 is provided with an annular lug 5, and the external, through the cooperation use of clamp clamping piece 4 and trapezoidal snap ring 6, thereby reached the effect that utilizes clamp to press from both sides 4 tight tuber pipes, effectively reach tuber pipe and connector 2 sealing connection, guarantee sealed effect, prevent the leakage of tuber pipe junction, trapezoidal snap ring 6's outside fixedly connected with annular sleeve 7, trapezoidal snap ring 6 and annular sleeve 7 respectively have two, and its mutual fixed connection respectively, the screw thread has been seted up to annular sleeve 7's inside, trapezoidal snap ring 6 and annular sleeve 7 cup joint with 1 activity of communicating pipe.
The inner part of the annular sleeve 7 is movably connected with a feeding ring 8, the annular sleeve 7 can be driven to move towards the center of the communicating pipe 1 by rotating the feeding ring 8 through the matching use of the annular sleeve 7 and the feeding ring 8, so that the clamp clamping pieces 4 clamp the soft air pipe, the connection tightness is ensured, the operation is simple, the connection efficiency is high, the outer part of the feeding ring 8 is fixedly connected with a connecting neck 9, the inner part of the connecting neck 9 is provided with an annular clamping groove 10, the inner part of the annular clamping groove 10 is movably connected with two annular clamping buckles 11 which are respectively movably connected with the two annular clamping grooves 10 and fixedly connected with the communicating pipe 1, the two annular clamping buckles 11 are radially symmetrical relative to the center of the communicating pipe 1, the outer part of the connecting neck 9 is fixedly connected with rotating side teeth 12, the feeding ring 8 and the connecting neck 9, the annular clamping grooves 10 and the rotating side teeth 12 are respectively divided into, and the outer surface of the feeding ring 8 is provided with threads, the outer diameter of the feeding ring 8 is matched with the inner diameter of the annular sleeve 7 in size, the two rotating side teeth 12 are respectively movably connected with the gear 13, and the two feeding rings 8, the connecting neck 9, the annular clamping groove 10 and the rotating side teeth 12 are radially symmetrical about the center of the communicating pipe 1 and are respectively movably connected with the communicating pipe 1.
The external part of the rotating side teeth 12 is movably connected with a gear 13, the gear 13 is rotated to drive a feeding ring 8 to rotate by matching the rotating side teeth 12 and the gear 13, so that the annular sleeve 7 is driven to feed, the effect of clamping the soft air pipe is achieved, the screw connection is changed into the rotary connection of the gear 13, the connection method is simpler, the installation and the disassembly are more convenient, the operation efficiency is higher, the inside of the gear 13 is fixedly connected with a bearing 14, the inside of the bearing 14 is fixedly connected with a fixed block 15, the outside of the gear 13 is fixedly connected with a rotating bayonet 16, the gear 13, the bearing 14, the fixed block 15 and the rotating bayonet 16 are respectively provided with two sliding stopping patterns which are respectively and symmetrically distributed about the axis of the communicating pipe 1, the two fixed blocks 15 are fixedly connected with the communicating pipe 1, the outside of the two rotating bayonet 16 is provided with a rotating rod 17, and the inside of, anti-slip patterns are formed in the inner wall of the clamping pin groove 18, the inner diameter of the clamping pin groove 18 is matched with the diameter of the rotary clamping pin 16, the inside of the rotary rod 17 is movably connected with a handle 19, the outside of the rotary rod 17 is movably connected with a positioning frame 20, positioning holes 21 are formed in the positioning frame 20, the number of the positioning frames 20 is two, the positioning frames 20 and the positioning holes 21 are symmetrical about the axis of the communicating pipe 1, the positioning frame 20 is fixedly connected with the communicating pipe 1, and the diameter of the positioning holes 21 is matched with the diameter of the rotary rod 17.
The working principle is that when in connection, the trapezoidal snap ring 6 and the clamp clip 4 are firstly sleeved on the flexible air pipe, then the flexible air pipe is connected on the connecting port 2, the clamp clip 4 is clamped on the flexible air pipe, the annular sleeve 7 and the feeding ring 8 are primarily connected, the flexible air pipe at the other end is treated in the same way, as the inside of the rotary rod 17 is provided with the snap groove 18, the snap groove 18 and the rotary snap 16 are movably connected and are respectively provided with anti-slip patterns, at the moment, the rotary rod 17 rotates to drive the rotary snap 16 to rotate, the rotary snap 16 is fixedly connected with the gear 13, the gear 13 is meshed with the rotary side teeth 12, the rotary snap 16 drives the gear 13 to rotate, the rotation of the gear 13 drives the rotary side teeth 12 to rotate, as the rotary side teeth 12 are fixedly connected with the connecting neck 9, the connecting neck 9 is fixedly connected with the feeding ring 8, the rotary side teeth 12 drive the feeding ring 8 to rotate, annular sleeve 7 and 6 fixed connection of trapezoidal snap ring, feed ring 8 and rotate and drive annular sleeve 7 and be feed motion to communicating pipe 1 center, make trapezoidal snap ring 6 to the center feed motion of communicating pipe 1, because the trapezoidal design of connector 2 and trapezoidal snap ring 6 makes clamp clamping piece 4 press from both sides tight tuber pipe, and the tuber pipe is connected and is accomplished, and when the same reason was dismantled, reverse rotary gear 13 can accomplish the dismantlement.
To sum up, this soft tuber pipe connecting device based on clamp presss from both sides tight principle uses through the cooperation of communicating pipe 1 and connector 2 to reached and become two flange joint for 1 lug connection of communicating pipe, can effectively guarantee the leakproofness that the soft tuber pipe is connected.
Simultaneously, through the cooperation use of clamp clamping piece 4 and trapezoidal snap ring 6 to reach the effect that utilizes clamp 4 tight tuber pipe, effectively reached tuber pipe and connector 2 sealing connection, guarantee sealed effect, prevent the leakage of tuber pipe junction.
Meanwhile, the annular sleeve 7 and the feeding ring 8 are matched for use, the rotary feeding ring 8 can drive the annular sleeve 7 to move towards the center of the communicating pipe 1, and therefore the hoop clamping pieces 4 clamp the air hose tightly, connection tightness is guaranteed, operation is simple, and connection efficiency is high.
Simultaneously, through the cooperation of rotatory side tooth 12 and gear 13 use, make the rotatory ring 8 rotation that drives of gear 13 to drive annular sleeve 7 and feed, reach the effect of pressing from both sides tight hose, screwed connection becomes gear 13 swivelling joint, and the connection method is simpler, and the installation is dismantled more conveniently, and operating efficiency is higher.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a soft tuber pipe connecting device based on clamp presss from both sides tight principle, includes communicating pipe (1), its characterized in that: the outer portion of the communicating pipe (1) is fixedly connected with a connecting port (2), an annular groove (3) is formed in the surface of the connecting port (2), a clamp clamping piece (4) is movably connected to the outer portion of the connecting port (2), an annular convex block (5) is formed in the inner surface of the clamp clamping piece (4), a trapezoidal clamping ring (6) is movably connected to the outer portion of the clamp clamping piece (4), an annular sleeve (7) is fixedly connected to the outer portion of the trapezoidal clamping ring (6), a feeding ring (8) is movably connected to the inner portion of the annular sleeve (7), a connecting neck (9) is fixedly connected to the outer portion of the feeding ring (8), an annular clamping groove (10) is formed in the inner portion of the connecting neck (9), an annular buckle (11) is movably connected to the inner portion of the annular clamping groove (10), and a rotating side, the utility model discloses a rotary side gear (12) for the automobile seat, including rotatory side gear (12), the outside swing joint of gear (13) has gear (13), the inside fixedly connected with bearing (14) of gear (13), the inside fixedly connected with fixed block (15) of bearing (14), the rotatory bayonet lock (16) of the outside fixedly connected with of gear (13), the outside swing joint of rotatory bayonet lock (16) has rotary rod (17), bayonet lock groove (18) have been seted up to the inside of rotary rod (17), the inside swing joint of rotary rod (17) has handle (19), the outside swing joint of rotary rod (17) has locating frame (20), locating hole (21) have been seted up to the inside of locating frame (20).
2. The air hose connecting device based on the clamping clip principle as claimed in claim 1, wherein: the two connectors (2) are respectively connected to two ends of the communicating pipe (1), each connector (2) is trapezoidal, and the wide end of each connector is connected with the communicating pipe (1).
3. The air hose connecting device based on the clamping clip principle as claimed in claim 1, wherein: the annular grooves (3) are respectively formed in the two connectors (2), and three to five connectors (2) are formed in each connector.
4. The air hose connecting device based on the clamping clip principle as claimed in claim 1, wherein: the two clamp clamping pieces (4) are respectively connected to the outer part of each connecting port (2), the cross section of each clamp clamping piece is trapezoidal, and a clamping groove is formed in the narrow end of each clamp clamping piece.
5. The air hose connecting device based on the clamping clip principle as claimed in claim 1, wherein: trapezoidal snap ring (6) and annular sleeve (7) respectively have two, and trapezoidal snap ring (6) and annular sleeve (7) one-to-one fixed connection, and the inside of annular sleeve (7) is seted up threadedly, and trapezoidal snap ring (6) and annular sleeve (7) cup joint with communicating pipe (1) activity.
6. The air hose connecting device based on the clamping clip principle as claimed in claim 1, wherein: feed ring (8), connecting neck (9), ring groove (10) and rotatory side tooth (12) respectively have two, divide equally two sets of mutual fixed connection respectively, and feed the surface of ring (8) and set up screw thread, the external diameter of feeding ring (8) and the internal diameter size adaptation of annulus (7), two rotatory side teeth (12) respectively with gear (13) swing joint, two feed ring (8), connecting neck (9), ring groove (10) and rotatory side tooth (12) are about the central radial symmetry of communicating pipe (1), and separately with communicating pipe (1) swing joint.
7. The air hose connecting device based on the clamping clip principle as claimed in claim 1, wherein: annular buckle (11) have two, respectively with two ring groove (10) swing joint, and with communicating pipe (1) fixed connection, two annular buckle (11) are radial symmetry about the center of communicating pipe (1).
8. The air hose connecting device based on the clamping clip principle as claimed in claim 1, wherein: the gear (13), the bearing (14), the fixing blocks (15) and the rotary clamping pins (16) are respectively arranged in two numbers, and are respectively symmetrically distributed about the axis of the communicating pipe (1), the two fixing blocks (15) are fixedly connected with the communicating pipe (1), and anti-slip patterns are arranged outside the two rotary clamping pins (16).
9. The air hose connecting device based on the clamping clip principle as claimed in claim 1, wherein: the inner wall of the clamp pin groove (18) is provided with anti-slip patterns, and the inner diameter of the clamp pin groove (18) is matched with the diameter of the rotary clamp pin (16).
10. The air hose connecting device based on the clamping clip principle as claimed in claim 1, wherein: the positioning frame (20) and the positioning holes (21) are respectively two and are symmetrical about the axis of the communicating pipe (1), the positioning frame (20) is fixedly connected with the communicating pipe (1), and the diameter of the positioning holes (21) is matched with the diameter of the rotating rod (17).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860419.7A CN110529663B (en) | 2019-09-11 | 2019-09-11 | Flexible air pipe connecting device based on clamp clamping principle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910860419.7A CN110529663B (en) | 2019-09-11 | 2019-09-11 | Flexible air pipe connecting device based on clamp clamping principle |
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| CN110529663A CN110529663A (en) | 2019-12-03 |
| CN110529663B true CN110529663B (en) | 2020-11-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196835A (en) * | 2020-09-26 | 2021-01-08 | 兀帅帅 | Canvas air pipe connecting device of fire-fighting fan |
| CN114607856B (en) * | 2022-03-08 | 2023-11-17 | 徐州市华为工程机械有限公司 | Quick-change joint for pipeline |
| CN115523723B (en) * | 2022-09-16 | 2024-05-17 | 中国矿业大学 | Centrifugal heat carrier gas combined dehydration method for low-rank coal |
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| WO2013098560A2 (en) * | 2011-12-30 | 2013-07-04 | National Oilwell Varco Limited | Connector device for use in wireline intervention operations |
| CN107166122A (en) * | 2017-07-11 | 2017-09-15 | 江苏苏龙环保科技有限公司 | A kind of ventilating duct connects sealing structure |
| CN206770851U (en) * | 2017-03-30 | 2017-12-19 | 绍兴柯桥滨海供水有限公司 | A kind of portable PE pipe connections |
| CN209100850U (en) * | 2018-11-26 | 2019-07-12 | 蓝峰科技股份有限公司 | A kind of dispenser hose connection device |
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2019
- 2019-09-11 CN CN201910860419.7A patent/CN110529663B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3507521A (en) * | 1967-08-10 | 1970-04-21 | Robert E Bridgland Jr | Monitors |
| WO2013098560A2 (en) * | 2011-12-30 | 2013-07-04 | National Oilwell Varco Limited | Connector device for use in wireline intervention operations |
| CN206770851U (en) * | 2017-03-30 | 2017-12-19 | 绍兴柯桥滨海供水有限公司 | A kind of portable PE pipe connections |
| CN107166122A (en) * | 2017-07-11 | 2017-09-15 | 江苏苏龙环保科技有限公司 | A kind of ventilating duct connects sealing structure |
| CN209100850U (en) * | 2018-11-26 | 2019-07-12 | 蓝峰科技股份有限公司 | A kind of dispenser hose connection device |
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| CN110529663A (en) | 2019-12-03 |
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Effective date of registration: 20240723 Address after: Room 101, Unit 1, Sifang Machinery Factory, Xinghui Road, Caotang Street, High tech Zone, Xi'an City, Shaanxi Province 710000 Patentee after: Xi'an Kefeng Environmental Protection and Ventilation Technology Co.,Ltd. Country or region after: China Address before: Room 1702, office building, Shiyang shopping mall, No.15, Zhenghe Middle Road, Wuhang street, Changle District, Fuzhou City, Fujian Province, 350200 Patentee before: Fuzhou Yuzhuo Technology Co.,Ltd. Country or region before: China |