CN110814466A - Portable carbon arc gouging cut mouth - Google Patents
Portable carbon arc gouging cut mouth Download PDFInfo
- Publication number
- CN110814466A CN110814466A CN201911144809.0A CN201911144809A CN110814466A CN 110814466 A CN110814466 A CN 110814466A CN 201911144809 A CN201911144809 A CN 201911144809A CN 110814466 A CN110814466 A CN 110814466A
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- Prior art keywords
- pipe
- wall
- carbon arc
- ring
- arc gouging
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/013—Arc cutting, gouging, scarfing or desurfacing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/24—Features related to electrodes
- B23K9/28—Supporting devices for electrodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention discloses a portable carbon arc gouging nozzle which comprises a conical shell, wherein a carbon rod hole is formed in the top of the conical shell, an air inlet handle is arranged on one side of the conical shell and consists of a first pipe and a second pipe, one end, far away from the second pipe, of the first pipe is fixedly connected with the outer side of the conical shell, a transverse chute is formed in one side, close to the air inlet handle, of the conical shell and communicated with the first pipe, an inclined air outlet hole is formed in the inner wall of the bottom of the transverse chute, a first annular groove is formed in the outer side of the second pipe, and an opening is formed in one side, close to the first pipe, of the first annular groove. The air inlet handle is reasonable in design, practical and portable, the total length of the air inlet handle can be adjusted and fixed quickly as required, the phenomenon of automatic retraction during use can be effectively avoided, the air inlet amount can be adjusted conveniently, the sealing effect can be improved under the matching of the two sealing rings, the air leakage phenomenon is avoided, and the use requirement is met.
Description
Technical Field
The invention relates to the technical field of carbon arc gouging nozzles, in particular to a portable carbon arc gouging nozzle.
Background
The carbon arc gouging is a surface processing groove method which uses a carbon rod or a graphite rod as an electrode, generates electric arc with a workpiece, melts metal and blows off the melted metal by compressed air, and is mainly used for gouging, eliminating weld defects and back gouging in welding production; the existing portable carbon arc gouging planer is mostly composed of a conical head gouging head and an air inlet handle, and the conical gouging head is provided with a placing hole for placing a carbon rod or a graphite rod.
The length of the handle that admits air of current portable carbon arc gouging planer mouth exists the shortcoming that is not convenient for adjust and fix, and its air output size is also all unadjustable greatly, in some special welding, if need go deep into when the inboard processing slot of machine or shelf, the length that needs the handle that admits air is enough to extend to and treats processing department, and if directly set up longer handle that admits air, then can bring the influence when processing outside position and occupy great space, make portablely, can not satisfy the user demand, therefore we have proposed a portable carbon arc gouging planer mouth and be used for solving above-mentioned problem.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a portable carbon arc gouging planer.
The invention provides a portable carbon arc gouging nozzle, which comprises a conical shell, wherein a carbon rod hole is formed in the top of the conical shell, an air inlet handle is arranged on one side of the conical shell and consists of a first pipe and a second pipe, one end, far away from the second pipe, of the first pipe is fixedly connected with the outer side of the conical shell, a transverse chute is formed in one side, close to the air inlet handle, of the conical shell and communicated with the first pipe, an inclined air outlet hole is formed in the inner wall of the bottom of the transverse chute, a first annular groove is formed in the outer side of the second pipe, an opening is formed in one side, close to the first pipe, of the first annular groove, a knob ring is rotatably sleeved on the inner side wall of the first annular groove, a plurality of anti-skid strips are fixedly connected to the outer side of the knob ring, a circular pipe head is fixedly sleeved in the knob ring and positioned between the first pipe and the second pipe, a connecting pipe is fixedly sleeved in the first pipe, one end of the connecting pipe extends into the second pipe, the second pipe is sleeved on the connecting pipe in a sealing and sliding manner, a second annular groove is formed in the outer side of the connecting pipe, external threads are arranged on the inner side wall of the second annular groove, a nut is fixedly sleeved in the circular pipe head, the nut is sleeved on the external threads in a threaded manner, one end of the second pipe is fixedly connected with two fixing blocks, one sides of the two fixing blocks, which are close to each other, extend into the second annular groove, supporting blocks are fixedly connected on the inner top wall and the inner bottom wall of the second pipe, one sides of the fixing blocks, which are close to the corresponding supporting blocks, and a same positioning rod is fixed between the supporting blocks in a threaded manner, the connecting pipe is sleeved on the two positioning rods in a sliding manner, a rectangular groove is formed in the inner top wall of the first pipe, a baffle is sleeved in the rectangular groove in, one side bottom fixedly connected with of baffle and the stopper of connecting pipe top inner wall movable contact, the top of first pipe is equipped with the handle, and the bottom fixedly connected with screw rod of handle, and the rectangular channel is run through and extend to first intraductal in the bottom of screw rod, and the baffle thread bush is established on the screw rod.
Preferably, two third ring channels have been seted up in the outside of connecting pipe, and two third ring channels all are located the second ring channel and keep away from one side of conical shell, and the fixed cover in the third ring channel is equipped with the sealing washer, and the outside of sealing washer and the sealed movable contact of lateral wall of second pipe.
Preferably, the knob ring is internally and fixedly sleeved with a first bearing, and the inner ring of the first bearing is fixedly sleeved on the inner side wall of the first annular groove.
Preferably, two first round holes are formed in the inner wall of one side, away from the conical shell, of the second annular groove, a sealing rubber sheet is bonded in each first round hole, and the inner side of each sealing rubber sheet is connected with the outer side of the corresponding positioning rod in a sliding mode.
Preferably, the inner side of the nut is provided with an internal thread, and the internal thread is meshed with the external thread.
Preferably, the top of the baffle is provided with a threaded hole, and the threaded hole is in threaded connection with the screw.
Preferably, a second round hole is formed in the inner wall of the top of the rectangular groove, a sealing bearing is fixedly sleeved in the second round hole, and the inner ring of the sealing bearing is welded and fixed with the outer side of the screw rod.
Preferably, the outer side of the baffle plate is in sliding close contact with the side wall of the rectangular groove.
Preferably, the diameter of the transverse chute is smaller than that of the first pipe, and one end of the transverse chute is positioned inside the first pipe.
Compared with the prior art, the invention has the beneficial effects that:
through the second pipe, the connecting pipe, the first pipe, the transverse chute, the oblique air outlet hole, the sealing ring, the handle, the screw rod is matched with the baffle, the second pipe is connected with an air source, the gas enters the oblique air outlet hole through the second pipe, the connecting pipe, the first pipe and the transverse chute in sequence, and finally the slag blowing operation is carried out on the groove in the processing through the oblique air outlet hole;
through the knob ring, the pipe head, the nut, the external screw thread, the connecting pipe, the locating lever, the sealing washer, first pipe, conical shell body and second pipe cooperate, forward rotation knob ring passes through the pipe head and drives the nut and rotate on the external screw thread, can drive external screw thread and connecting pipe removal when the nut rotates, make the connecting pipe slide and drive two sealing washers and remove on two locating levers, the connecting pipe still drives conical shell body through first pipe and removes, distance increase between the one end of keeping away from each other is managed to first pipe and second this moment, thereby reach the total length of handle that admits air and change, adjust suitable back, stop rotating knob ring, automatic level and smooth phenomenon appears in the connecting pipe when can preventing to use this moment under nut and external screw thread self interlock damping.
The air inlet handle is reasonable in design, practical and portable, the total length of the air inlet handle can be adjusted and fixed quickly as required, the phenomenon of automatic retraction during use can be effectively avoided, the air inlet amount can be adjusted conveniently, the sealing effect can be improved under the matching of the two sealing rings, the air leakage phenomenon is avoided, and the use requirement is met.
Drawings
FIG. 1 is a perspective view of a portable carbon arc gouging nozzle in accordance with the present invention;
FIG. 2 is a perspective view of the intake handle of FIG. 1 shown prior to installation;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a perspective view of FIG. 2;
FIG. 5 is a side cross-sectional structural view of the air intake handle of FIG. 1;
FIG. 6 is a schematic view of the structure of part A in FIG. 5;
FIG. 7 is a schematic view of the structure of part B in FIG. 5;
FIG. 8 is a perspective view of the connection tube and two gasket couplings of FIG. 5;
fig. 9 is a perspective view of the knob ring and barrel head connector of fig. 5.
In the figure: the device comprises a conical shell 1, a carbon rod hole 2, a transverse chute 3, an inclined air outlet hole 4, a first pipe 5, a second pipe 6, a first annular groove 7, a knob ring 8, an anti-slip strip 9, a connecting pipe 10, a second annular groove 11, an external thread 12, a circular pipe head 13, a nut 14, a fixed block 15, a positioning rod 16, a supporting block 17, a rectangular groove 18, a baffle 19, a limiting block 20, a handle 21, a screw 22, a first bearing 23, a third annular groove 24, a sealing ring 25 and a first circular hole 26.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Examples
Referring to fig. 1-9, this embodiment provides a portable carbon arc gouging torch, which comprises a conical housing 1, a carbon rod hole 2 is formed at the top of the conical housing 1, an air inlet handle is arranged at one side of the conical housing 1, the air inlet handle is composed of a first tube 5 and a second tube 6, one end of the first tube 5, which is far away from the second tube 6, is fixedly connected with the outer side of the conical housing 1, a transverse chute 3 is formed at one side of the conical housing 1, which is close to the air inlet handle, the transverse chute 3 is communicated with the first tube 5, an inclined air outlet hole 4 is formed on the inner wall of the bottom of the transverse chute 3, a first annular groove 7 is formed at the outer side of the second tube 6, an opening is formed at one side of the first annular groove 7, a knob ring 8 is rotatably sleeved on the inner side wall of the first annular groove 7, a plurality of anti-slip strips 9 are fixedly connected to the outer side of the knob ring 8, a circular tube, the round tube head 13 is positioned between the first tube 5 and the second tube 6, the first tube 5 is fixedly sleeved with a connecting tube 10, one end of the connecting tube 10 extends into the second tube 6, the second tube 6 is sleeved on the connecting tube 10 in a sealing and sliding manner, the outer side of the connecting tube 10 is provided with a second annular groove 11, the inner side wall of the second annular groove 11 is provided with an external thread 12, the round tube head 13 is fixedly sleeved with a nut 14, the nut 14 is sleeved on the external thread 12 in a threaded manner, one end of the second tube 6 is fixedly connected with two fixing blocks 15, the mutually adjacent sides of the two fixing blocks 15 extend into the second annular groove 11, the top inner wall and the bottom inner wall of the second tube 6 are both fixedly connected with supporting blocks 17, one side of the fixing block 15, which is adjacent to the corresponding supporting block 17, is fixedly provided with the same positioning rod 16 through a thread between the supporting block 17 and the supporting block 17, the connecting tube, and sliding sleeve is equipped with baffle 19 in rectangular channel 18, baffle 19's bottom extends to in the first pipe 5, baffle 19 keeps away from one side of conical head casing 1 and the other end swing contact of connecting pipe 10, one side bottom fixedly connected with of baffle 19 and the stopper 20 of connecting pipe 10 top inner wall swing contact, the top of first pipe 5 is equipped with handle 21, and the bottom fixedly connected with screw rod 22 of handle 21, rectangular channel 18 is run through and extends to in the first pipe 5 in the bottom of screw rod 22, 18 threaded sleeve of baffle is established on screw rod 22, this embodiment reasonable in design, it is practical portable, be convenient for adjust the total length of handle that admits air fast and fix according to the demand, the automatic phenomenon that contracts that appears in the time of can effectively avoiding using, be convenient for adjust the air input, and can improve sealed effect in order to avoid appearing the gas leakage phenomenon under the cooperation of two sealing washer 25, and.
In this embodiment, two third annular grooves 24 are formed on the outer side of the connecting pipe 10, the two third annular grooves 24 are both located on one side of the second annular groove 11 away from the conical shell 1, a sealing ring 25 is fixedly sleeved in the third annular groove 24, the outer side of the sealing ring 25 is in sealing movable contact with the side wall of the second pipe 6, a first bearing 23 is fixedly sleeved in the knob ring 8, an inner ring of the first bearing 23 is fixedly sleeved on the inner side wall of the first annular groove 7, two first circular holes 26 are formed on the inner wall of one side of the second annular groove 11 away from the conical shell 1, a sealing rubber sheet is bonded in the first circular hole 26, the inner side of the sealing rubber sheet is in sliding connection with the outer side of the corresponding positioning rod 16, an internal thread is formed on the inner side of the nut 14, the internal thread is engaged with the external thread 12, a threaded hole is formed in the top of the baffle plate 19, the threaded hole is, and the fixed cover in the second round hole is equipped with sealed bearing, sealed bearing's inner circle and screw rod 22's outside welded fastening, baffle 19's the outside and the lateral wall sliding in close contact with of rectangular channel 18, the diameter ratio of horizontal chute 3 is little than the diameter of first pipe 5, the one end of horizontal chute 3 is located the inboard of first pipe 5, this embodiment reasonable in design, it is practical portable, be convenient for carry out quick adjustment and fix to the total length of the handle that admits air according to the demand, the automatic phenomenon that contracts that appears when can effectively avoiding using, be convenient for adjust the air input, and can improve sealed effect under the cooperation of two sealing washer 25 and in order to avoid appearing the gas leakage phenomenon, satisfy the user.
In the embodiment, during air inlet, one end of the second pipe 6, which is far away from the conical shell 1, is connected with an air source, the air enters the connecting pipe 10 through the second pipe 6, then enters the first pipe 5 through the connecting pipe 10, then sequentially enters the inclined air outlet 4 through the first pipe 5 and the transverse chute 3, and finally is blown out through the inclined air outlet 4, so that slag melted in the groove being processed is blown off, the air can be effectively prevented from being discharged between the first pipe 6 and the connecting pipe 10 by the way that the two sealing rings 25 on the connecting pipe 10 are contacted with the side wall of the first pipe 6, when the air inlet amount needs to be adjusted, the handle 21 is rotated in the forward direction to drive the screw rod 22 to rotate, under the action of the threaded hole arranged at the top of the baffle plate 19, the screw rod 22 rotates to drive the baffle plate 19 to slide downwards in the rectangular groove 18, the position sheltered from the other end of the connecting pipe 10 is gradually increased when the baffle plate 19 moves downwards, so that the, thereby reducing the air output and achieving the purpose that the air input into the inclined air outlet hole 4 is changed;
when the length of the air inlet handle is adjusted, the knob ring 8 is rotated in the forward direction, the knob ring 8 drives the circular tube head 13 to rotate, the circular tube head 13 drives the nut 14 to rotate on the external thread 12, the nut 14 can drive the external thread 12 to move towards the direction close to the conical shell 1 when rotating, the external thread 12 drives the connecting tube 10 to slide on the two positioning rods 16, the connecting tube 10 drives the two sealing rings 25 to slide on the inner side wall of the first tube 6, meanwhile, the connecting tube 10 drives the first tube 5 to move towards the direction far away from the second tube 6, the first tube 5 drives the conical shell 1 to move, the distance between the ends, far away from each other, of the first tube 5 and the second tube 6 is increased, thereby the total length of the air inlet handle is changed, after the air inlet handle is adjusted properly, the knob ring 8 stops rotating, the nut 14 does not rotate any more at the moment, and the self-locking characteristic of the threaded part of the, when the nut 14 does not rotate, an occluded damping gnawing force to the external thread 12 exists, so that the phenomenon of automatic smoothness of the connecting pipe 10 can be prevented, the total length and air inflow of the air inlet handle can be conveniently adjusted, and the phenomenon of air leakage can be avoided under the matching of the two sealing rings 25.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a portable carbon arc gouging planer mouth, includes toper casing (1), the top of toper casing (1) is provided with carbon rod hole (2), and one side of toper casing (1) is provided with the handle of admitting air, a serial communication port, the handle of admitting air comprises first pipe (5) and second pipe (6), and the one end that second pipe (6) were kept away from in first pipe (5) and the outside fixed connection of toper casing (1), and one side that toper casing (1) is close to the handle of admitting air has seted up horizontal chute (3), and horizontal chute (3) are linked together with first pipe (5), has seted up oblique air outlet hole (4) on the bottom inner wall of horizontal chute (3), first ring channel (7) have been seted up in the outside of second pipe (6), and one side that first ring channel (7) are close to first pipe (5) sets up to the opening, rotates the cover on the inside wall of first ring channel (7) and is equipped with knob ring (8), and the outside fixedly connected with a plurality of antislip strips (9) of knob ring (8), fixed cover is equipped with pipe head (13) in knob ring (8), and pipe head (13) are located between first pipe (5) and second pipe (6), fixed cover is equipped with connecting pipe (10) in first pipe (5), and the one end of connecting pipe (10) extends to in second pipe (6), and second pipe (6) seal sliding sleeve is established on connecting pipe (10), second ring channel (11) have been seted up in the outside of connecting pipe (10), and are equipped with external screw thread (12) on the inside wall of second ring channel (11), fixed cover is equipped with nut (14) in pipe head (13), and nut (14) thread bush is on external screw thread (12), the one end fixedly connected with two fixed blocks (15) of second pipe (6), one side that two fixed blocks (15) are close to each other all extends to in second ring channel (11), supporting blocks (17) are fixedly connected to the inner wall of the top portion and the inner wall of the bottom portion of the second pipe (6), a same positioning rod (16) is fixedly arranged between one side, close to the corresponding supporting block (17), of a fixing block (15) and the supporting block (17) in a threaded mode, the connecting pipe (10) is sleeved on the two positioning rods (16) in a sliding mode, a rectangular groove (18) is formed in the inner wall of the top portion of the first pipe (5), a baffle plate (19) is sleeved in the rectangular groove (18) in a sliding mode, the bottom of the baffle plate (19) extends into the first pipe (5), one side, far away from the conical head shell (1), of the baffle plate (19) is in movable contact with the other end of the connecting pipe (10), a limiting block (20) in movable contact with the inner wall of the top portion of the connecting pipe (10) is fixedly connected to the bottom portion of one side of the baffle plate (19), a, the bottom end of the screw rod (22) penetrates through the rectangular groove (18) and extends into the first pipe (5), and the baffle plate (18) is sleeved on the screw rod (22) in a threaded mode.
2. The portable carbon arc gouging torch according to claim 1, wherein two third annular grooves (24) are formed in the outer side of the connecting pipe (10), the two third annular grooves (24) are located on the side of the second annular groove (11) away from the conical shell (1), a sealing ring (25) is fixedly sleeved in the third annular groove (24), and the outer side of the sealing ring (25) is in sealing movable contact with the side wall of the second pipe (6).
3. The portable carbon arc gouging torch according to claim 1, wherein said knob ring (8) is fixedly sleeved with a first bearing (23), and an inner ring of said first bearing (23) is fixedly sleeved on an inner sidewall of said first annular groove (7).
4. The portable carbon arc gouging torch according to claim 1, wherein two first circular holes (26) are formed in an inner wall of the second annular groove (11) on a side away from the conical housing (1), a sealing rubber is bonded in the first circular holes (26), and an inner side of the sealing rubber is slidably connected with an outer side of the corresponding positioning rod (16).
5. The portable carbon arc gouging torch according to claim 1, wherein said nut (14) is internally threaded and the internal threads engage the external threads (12).
6. The portable carbon arc gouging torch according to claim 1, wherein a threaded hole is formed in the top of the baffle plate (19), and the threaded hole is in threaded connection with the screw (22).
7. The portable carbon arc gouging torch according to claim 1, wherein a second circular hole is formed in the inner wall of the top of the rectangular groove (18), a sealing bearing is fixedly sleeved in the second circular hole, and an inner ring of the sealing bearing is welded and fixed to the outer side of the screw rod (22).
8. The portable carbon arc gouging nozzle according to claim 1, wherein the outside of said baffle (19) is in sliding close contact with the side walls of the rectangular slot (18).
9. The portable carbon arc gouging nozzle according to claim 1, wherein said transverse chute (3) has a smaller diameter than the first tube (5), one end of the transverse chute (3) being located inside the first tube (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911144809.0A CN110814466A (en) | 2019-11-20 | 2019-11-20 | Portable carbon arc gouging cut mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911144809.0A CN110814466A (en) | 2019-11-20 | 2019-11-20 | Portable carbon arc gouging cut mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110814466A true CN110814466A (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911144809.0A Pending CN110814466A (en) | 2019-11-20 | 2019-11-20 | Portable carbon arc gouging cut mouth |
Country Status (1)
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| CN (1) | CN110814466A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4788401A (en) * | 1987-08-17 | 1988-11-29 | C-K Systematics, Inc. Div. Of Conley & Kleppen, Int'l. | Inert gas welding torch |
| CN200963726Y (en) * | 2006-10-31 | 2007-10-24 | 锦西化工机械(集团)有限责任公司 | Thick-steel-plate narrow-clearance deep-groove carbon arc gas gouging torch for removing metal |
| CN203973470U (en) * | 2014-07-08 | 2014-12-03 | 中国大唐集团新能源股份有限公司 | Be used for the frock of the temperature control three-way valve control valve of changing cooling system of wind driven generator |
| CN109759674A (en) * | 2019-01-11 | 2019-05-17 | 东方电气集团东方汽轮机有限公司 | A kind of carbon arc gouging gun of deep hole |
| CN208878845U (en) * | 2018-08-24 | 2019-05-21 | 青岛恒华机房设备工程有限公司 | A kind of universal flushing pipette tips |
| CN209524148U (en) * | 2018-11-30 | 2019-10-22 | 中石化川气东送天然气管道有限公司 | A kind of pipeline support frame |
| CN211248723U (en) * | 2019-11-20 | 2020-08-14 | 魏秀菊 | Portable carbon arc gouging cut mouth |
-
2019
- 2019-11-20 CN CN201911144809.0A patent/CN110814466A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4788401A (en) * | 1987-08-17 | 1988-11-29 | C-K Systematics, Inc. Div. Of Conley & Kleppen, Int'l. | Inert gas welding torch |
| CN200963726Y (en) * | 2006-10-31 | 2007-10-24 | 锦西化工机械(集团)有限责任公司 | Thick-steel-plate narrow-clearance deep-groove carbon arc gas gouging torch for removing metal |
| CN203973470U (en) * | 2014-07-08 | 2014-12-03 | 中国大唐集团新能源股份有限公司 | Be used for the frock of the temperature control three-way valve control valve of changing cooling system of wind driven generator |
| CN208878845U (en) * | 2018-08-24 | 2019-05-21 | 青岛恒华机房设备工程有限公司 | A kind of universal flushing pipette tips |
| CN209524148U (en) * | 2018-11-30 | 2019-10-22 | 中石化川气东送天然气管道有限公司 | A kind of pipeline support frame |
| CN109759674A (en) * | 2019-01-11 | 2019-05-17 | 东方电气集团东方汽轮机有限公司 | A kind of carbon arc gouging gun of deep hole |
| CN211248723U (en) * | 2019-11-20 | 2020-08-14 | 魏秀菊 | Portable carbon arc gouging cut mouth |
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Application publication date: 20200221 |
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