CN113199053A - Eccentric machining device of one-way valve - Google Patents
Eccentric machining device of one-way valve Download PDFInfo
- Publication number
- CN113199053A CN113199053A CN202110545005.2A CN202110545005A CN113199053A CN 113199053 A CN113199053 A CN 113199053A CN 202110545005 A CN202110545005 A CN 202110545005A CN 113199053 A CN113199053 A CN 113199053A
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- Prior art keywords
- fixedly connected
- groove
- oil
- base
- vertical plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/46—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio
- B23Q5/48—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio by use of toothed gears
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses an eccentric machining device of a one-way valve, which comprises a base, wherein a door-shaped frame is fixedly connected to the upper end of the base, the door-shaped frame comprises two vertical plates fixedly connected to the base at intervals, transverse plates are fixedly connected to the upper ends of the two vertical plates together, a machining table is arranged at the upper end of the base and between the two vertical plates, a funnel-shaped placing groove is formed in the upper end of the machining table, a threaded rod is rotatably connected between the two vertical plates together, the threaded rod penetrates through the machining table in a threaded manner, the left end of the threaded rod rotatably penetrates through the vertical plate on the right side and is fixedly connected with an adjusting turntable, and a lifting groove is vertically formed in one opposite side of each vertical plate. Has the advantages that: the eccentric hole drilling device can automatically drill an eccentric hole of the one-way valve, saves labor force, improves processing speed, does not need to manually paint lubricating oil, automatically lubricates a gear and a toothed plate, keeps normal and sensitive work of a rotating shaft, and saves processing time.
Description
Technical Field
The invention relates to the technical field of one-way valve machining, in particular to an eccentric machining device for a one-way valve.
Background
The check valve has the characteristics of simple and convenient operation, excellent check performance and the like, and is widely applied to various devices, such as hydraulic systems for preventing reverse flow of oil flow or pneumatic systems for preventing reverse flow of compressed air.
In the course of working of check valve, need bore the eccentric orfice of getting to check valve inside, the course of working among the prior art often needs artifical manual to bore and gets, and the precision is relatively poor, efficiency is lower, and has certain potential safety hazard, can't guarantee staff's safety.
To solve the above problems, we propose an eccentric machining device for a check valve.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides an eccentric machining device of a check valve.
In order to achieve the purpose, the invention adopts the following technical scheme: the eccentric machining device of the one-way valve comprises a base, wherein a door-shaped frame is fixedly connected to the upper end of the base, the door-shaped frame comprises two vertical plates fixedly connected to the base and arranged at intervals, transverse plates are fixedly connected to the upper ends of the two vertical plates together, a machining table is arranged at the upper end of the base and between the two vertical plates, a funnel-shaped placing groove is formed in the upper end of the machining table, a threaded rod is connected between the two vertical plates in a rotating mode and penetrates through the machining table in a threaded mode, the left end of the threaded rod penetrates through the vertical plate on the right side in a rotating mode and is fixedly connected with an adjusting turntable, lifting grooves are correspondingly and vertically formed in the opposite sides of the two vertical plates, a toothed plate groove is formed in the inner wall of the rear side of one end, away from a notch, a toothed plate is fixedly connected in the toothed plate groove, gears are engaged with the two toothed plates, and a moving block is arranged on the inner side of the door-shaped frame, the movable block is provided with driving grooves on two sides, first rotating shafts are rotatably connected to the left and right ends of the movable block in the driving grooves, one ends of the first rotating shafts, far away from the movable block, extend into the lifting grooves and are fixedly connected with one ends of the gears, worm wheels are fixedly sleeved on the first rotating shafts and in the driving grooves, the upper ends of the worm wheels are meshed with worms, second rotating shafts are fixedly inserted in the axes of the worms, the front and rear ends of the second rotating shafts are rotatably connected with the front and rear inner walls of the driving grooves respectively, the extension length of the second rotating shafts, which penetrate through the rear side of the driving grooves and are positioned on the right side, is longer than that of the second rotating shafts positioned on the left side, the back side of the movable block is rotatably connected with a driving shaft, belt pulleys are fixedly sleeved on the two rear ends of the two second rotating shafts and the driving shaft, and the number of the belt pulleys on the driving shaft is two, the two second rotating shafts are in one-to-one correspondence with belt wheels on the two second rotating shafts, and a transmission belt is sleeved between each two corresponding belt wheels;
the utility model discloses a drill bit, including movable block, movable block lower extreme fixedly connected with first mounting bracket, fixed mounting has driving motor on the first mounting bracket, the drill bit is installed to driving motor's output, the drill bit sets up downwards, diaphragm upper end fixedly connected with second mounting bracket, second mounting bracket upper end fixedly connected with oil tank, oil tank lower extreme intercommunication has the notes oil pipe, the notes oil pipe lower extreme extends to in the diaphragm and the intercommunication has two to lead oil pipe, two equal vertical oil groove of having seted up on the pinion rack, two lead the one end that oil pipe kept away from the notes oil pipe respectively with two oil groove upper ends intercommunication.
In the above-mentioned eccentric machining device of a check valve, the upper end of the base and the lower end of the machining table are smooth surfaces and are mutually attached and slide.
In the above-mentioned eccentric processing device of a check valve, a forward and reverse rotation motor is fixedly installed in the moving block, and an output end of the forward and reverse rotation motor is fixedly connected with the driving shaft.
In the above-mentioned eccentric machining device for the check valve, the two third rotating shafts are rotatably connected to the left and right sides of the moving block and in the driving groove, the ends of the two third rotating shafts located on the same side, away from the moving block, extend into the lifting groove and are fixedly connected with the limiting guide wheels, and the two limiting guide wheels located on the same side are respectively in rolling connection with the front and rear inner walls of the lifting groove.
In the above-mentioned eccentric processing device of a check valve, the oil injection pipe is provided with an electromagnetic valve.
In the eccentric machining device of the one-way valve, the oil receiving boxes are inserted on two sides of the two vertical plates and below the toothed plate, and the lower ends of the oil grooves are communicated with the upper ends of the oil receiving boxes.
Compared with the prior art, the eccentric machining device of the one-way valve has the advantages that:
1. through just reversing motor drive shaft and rotating, the drive shaft is connected through the belt drive and is driven two second pivots and rotate, then two worm and worm wheel meshing transmission drive two first pivots syntropy with the rotational speed and rotate, make two gear revolve, drive the movable block and reciprocate under third pivot and spacing guide pulley limiting displacement, carry out automatic drilling operation, need not artifical manual drilling, improved machining efficiency greatly, avoid the injured danger of course of working personnel.
2. Through setting up the oil tank, annotate the oil pipe, lead oil pipe, oil groove and connect the oil box, when needs paint lubricating oil to pinion rack and gear, only need open the solenoid valve on the notes oil pipe, lubricating oil in the oil tank passes through annotate the oil pipe and leads in oil pipe inflow oil groove, then through lubricated every pinion rack of oil groove, when the gear removes on the pinion rack, equally lubricated to this reaches the purpose of self-lubricate gear and pinion rack, need not the manual work and paints lubricating oil, has saved the manpower, has practiced thrift process time.
Drawings
FIG. 1 is a front perspective view of an eccentric machining apparatus for a check valve according to the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic partial structure diagram of a top view of a moving block in an eccentric machining device of a check valve according to the present invention.
In the figure: the automatic oil filling machine comprises a base 1, a door-shaped frame 2, a machining table 3, a placing groove 4, a threaded rod 5, an adjusting rotary table 6, a lifting groove 7, a toothed plate 8, gears 9, a moving block 10, a first rotating shaft 11, a worm gear 12, a worm 13, a second rotating shaft 14, a belt wheel 15, a driving shaft 16, a first mounting frame 17, a driving motor 18, a drill bit 19, a third rotating shaft 20, a limiting guide wheel 21, a second mounting frame 22, an oil tank 23, an oil filling pipe 24, an electromagnetic valve 25, an oil guiding pipe 26, an oil groove 27 and an oil receiving box 28.
Detailed Description
The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
Referring to fig. 1-3, an eccentric processing device of a check valve comprises a base 1, a door-shaped frame 2 is fixedly connected to the upper end of the base 1, the door-shaped frame 2 comprises two vertical plates fixedly connected to the base 1 and arranged at intervals, transverse plates are fixedly connected to the upper ends of the two vertical plates together, a processing table 3 is arranged at the upper end of the base 1 and between the two vertical plates, a funnel-shaped placing groove 4 is formed in the upper end of the processing table 3, the check valve to be processed can be placed conveniently and can be taken out conveniently, a threaded rod 5 is rotatably connected between the two vertical plates together, the threaded rod 5 penetrates through the processing table 3 in a threaded manner, the left end of the threaded rod 5 penetrates through the vertical plate on the right side in a rotating manner and is fixedly connected with an adjusting turntable 6, the upper end of the base 1 and the lower end of the processing table 3 are smooth surfaces and are mutually attached and slide, the threaded rod 5 can be rotated by rotating the adjusting turntable 6, and then the position of the processing table 3 is moved, the drilling position is convenient to adjust.
A lifting groove 7 is vertically formed on one side opposite to each vertical plate, a toothed plate groove is formed on the inner wall of the rear side of one end, far away from the notch, of the lifting groove 7, toothed plates 8 are fixedly connected in the toothed plate groove, gears 9 are meshed on the two toothed plates 8, a moving block 10 is arranged on the inner side of a door-shaped frame 2, a driving groove is formed in each moving block 10, driving grooves are formed in the two sides of each moving block 10, first rotating shafts 11 are rotatably connected at the left end and the right end of each moving block 10 in the driving grooves, one ends, far away from the moving block 10, of the first rotating shafts 11 are extended in the lifting groove 7 and fixedly connected with one ends of the gears 9, worm wheels 12 are fixedly connected on the first rotating shafts 11 and fixedly sleeved in the driving grooves, worms 13 are meshed at the upper ends of the worm wheels 12, second rotating shafts 14 are fixedly inserted in the axes of the worms 13, the front ends and the rear ends of the second rotating shafts 14 are rotatably connected with the front inner wall and the rear wall of the driving grooves respectively, the rear ends of the two second rotating shafts 14 rotatably penetrate through the rear side of the driving grooves, and the second rotating shafts 14 on the right side are longer than the second rotating shafts 14 on the left side, the back side of the moving block 10 is rotatably connected with a driving shaft 16, belt pulleys 15 are fixedly sleeved on the rear ends of the two second rotating shafts 14 and the driving shaft 16, the number of the belt pulleys 15 on the driving shaft 16 is two, the two belt pulleys are in one-to-one correspondence with the belt pulleys 15 on the two second rotating shafts 14, a transmission belt is sleeved between every two corresponding belt pulleys 15, the driving shaft 16 is in transmission connection with the two second rotating shafts 14, the two worms 13 can be driven to rotate in the same rotating speed and the same direction, then the rotation of the two gears 9 can be controlled, and the moving block 10 is driven to move up and down.
Remove first mounting bracket 17 of 10 lower extremes fixedly connected with of movable block, fixed mounting has driving motor 18 on the first mounting bracket 17, drill bit 19 is installed to driving motor 18's output, drill bit 19 sets up downwards, diaphragm upper end fixedly connected with second mounting bracket 22, second mounting bracket 22 upper end fixedly connected with oil tank 23, 23 lower extreme intercommunication of oil tank have oiling pipe 24, oiling pipe 24 lower extreme extends to in the diaphragm and the intercommunication has two to lead oil pipe 26, equal vertical oil groove 27 of having seted up on two pinion rack 8, two lead the one end that oiling pipe 24 was kept away from to oil pipe 26 respectively with two oil groove 27 upper ends intercommunication, can be automatic add lubricating oil to pinion rack 8 and gear 9, holding device's normal sensitive operation.
A forward and reverse rotation motor is fixedly installed in the moving block 10, the output end of the forward and reverse rotation motor is fixedly connected with the driving shaft 16, and the forward and reverse rotation motor can drive the driving shaft 16 to rotate forward and reverse so as to control the moving block 10 to move up and down.
The left side and the right side of the moving block 10 are rotatably connected with two third rotating shafts 20 in the driving groove, one ends, far away from the moving block 10, of the two third rotating shafts 20 on the same side extend into the lifting groove 7 and are fixedly connected with limiting guide wheels 21, and the two limiting guide wheels 21 on the same side are respectively in rolling connection with the front inner wall and the rear inner wall of the lifting groove 7 to play a limiting role, so that the moving block 10 is prevented from rotating and can only move up and down.
The oil feed pipe 24 is provided with an electromagnetic valve 25, and lubricating oil can be fed into the oil feed pipe 26 through the electromagnetic valve 25.
Two riser both sides just all insert in pinion rack 8 below and are equipped with and connect oil box 28, oil groove 27 lower extreme and connect oil box 28 upper end intercommunication for receive the unnecessary lubricating oil that flows, avoid the waste of lubricating oil.
The working principle of the invention is as follows:
when the check valve is processed, the check valve to be drilled with the eccentric hole is placed into the placing groove 4, the shape of the bottom of the placing groove 4 is consistent with that of the check valve, so that the check valve can be stably positioned in the placing groove 4, then the driving shaft 16 is driven to rotate by the forward and reverse rotating motor, the driving shaft 16 is in transmission connection with the two second rotating shafts 14 through the belt wheel 15, the two worms 13 are driven to rotate in the same rotating speed and the same direction, so that the worms are in meshing transmission with the worm wheel 12 to drive the first rotating shaft 11 to rotate, the moving block 10 is driven to move up and down by the meshing of the gear 9 and the toothed plate 8, wherein the third rotating shafts 20 and the limiting guide wheels 21 on the two sides play a limiting role, so that the moving block 10 cannot rotate and can only move up and down, then the drill bit 19 is driven by the driving motor 18 to drill the eccentric hole, when the forward and reverse rotating motor stops rotating, the moving block 10 can keep a stable state under the self-locking effect of the worm wheel and worm, the phenomenon that drops can not take place, can be stable hover on door type frame 2, when needs adjust the drilling position, only need through rotating regulation carousel 6, drive threaded rod 5 through adjusting carousel 6 and rotate, then finely tune the position about to processing platform 3, reach the effect of adjusting the drilling position.
When gear 9 and pinion rack 8 need scribble lubricating oil, only need add lubricating oil in advance to oil tank 23, when needing to lubricate, only need open solenoid valve 25 on the oiling pipe 24, lubricating oil in the oil tank 23 flows into oil groove 27 through oiling pipe 24 and oil pipe 26, then lubricate every pinion rack 8 through oil groove 27, when gear 9 moves on pinion rack 8, equally lubricated, reach the purpose of self-lubricate gear 9 and pinion rack 8 with this, need not artifical lubricating oil of scribbling, the manpower has been saved, and the processing time has been practiced thrift.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. An eccentric machining device of a one-way valve comprises a base (1) and is characterized in that a door-shaped frame (2) is fixedly connected to the upper end of the base (1), the door-shaped frame (2) comprises two vertical plates fixedly connected to the base (1) and arranged at intervals, transverse plates are fixedly connected to the upper ends of the two vertical plates together, a machining table (3) is arranged at the upper end of the base (1) and between the two vertical plates, a funnel-shaped placing groove (4) is formed in the upper end of the machining table (3), a threaded rod (5) is rotatably connected between the two vertical plates together, the threaded rod (5) penetrates through the machining table (3) in a threaded manner, the left end of the threaded rod (5) rotatably penetrates through the vertical plate on the right side and is fixedly connected with an adjusting turntable (6), a lifting groove (7) is vertically formed in one side opposite to each of the two vertical plates, and a toothed plate groove is formed in the inner wall of the rear side of one end, far away from a notch, of the lifting groove (7), toothed plate inslot fixedly connected with toothed plate (8), two all meshing has gear (9) on toothed plate (8), door type frame (2) inboard is equipped with movable block (10), the drive groove has all been seted up to movable block (10) both sides, both ends just all rotate in the drive groove and be connected with first pivot (11) about movable block (10), the one end that movable block (10) were kept away from in first pivot (11) is extended and is put in lift groove (7) and with gear (9) one end fixed connection, on first pivot (11) and at the drive inslot fixed cover connect worm wheel (12), worm wheel (12) upper end meshing has worm (13), worm (13) axle center is fixed to be inserted and is equipped with second pivot (14), both ends rotate respectively with inner wall around the drive groove around second pivot (14) and be connected, two second pivot (14) rear end all rotates and runs through the second pivot(s) rear side and be located the right side (13), (13) 14) The extending length of the moving block (10) is longer than that of the second rotating shaft (14) on the left side, a driving shaft (16) is rotatably connected to the back side of the moving block (10), belt pulleys (15) are fixedly sleeved on the rear ends of the two second rotating shafts (14) and the driving shaft (16), the number of the belt pulleys (15) on the driving shaft (16) is two, the two belt pulleys correspond to the belt pulleys (15) on the two second rotating shafts (14) one to one, and a transmission belt is sleeved between every two corresponding belt pulleys (15) together.
2. The eccentric machining device of a check valve according to claim 1, the lower end of the moving block (10) is fixedly connected with a first mounting frame (17), a driving motor (18) is fixedly mounted on the first mounting frame (17), the output end of the driving motor (18) is provided with a drill bit (19), the drill bit (19) is arranged downwards, the upper end of the transverse plate is fixedly connected with a second mounting rack (22), the upper end of the second mounting rack (22) is fixedly connected with an oil tank (23), oil tank (23) lower extreme intercommunication has oiling pipe (24), oiling pipe (24) lower extreme extends to in the diaphragm and the intercommunication has two to lead oil pipe (26), two equal vertical oil groove (27) of having seted up on pinion rack (8), and two lead oil pipe (26) keep away from the one end of oiling pipe (24) respectively with two oil groove (27) upper end intercommunication.
3. An eccentric machining device of a check valve according to claim 1, characterized in that the upper end of the base (1) and the lower end of the machining table (3) are smooth surfaces and are mutually attached and slide.
4. The eccentric machining device of a check valve according to claim 1, characterized in that a forward and reverse rotating motor is fixedly installed in the moving block (10), and the output end of the forward and reverse rotating motor is fixedly connected with the driving shaft (16).
5. The eccentric machining device of the one-way valve according to claim 2, characterized in that two third rotating shafts (20) are rotatably connected to the left side and the right side of the moving block (10) in the driving groove, one ends of the two third rotating shafts (20) located on the same side, far away from the moving block (10), extend into the lifting groove (7) and are fixedly connected with limiting guide wheels (21), and the two limiting guide wheels (21) located on the same side are respectively in rolling connection with the front inner wall and the rear inner wall of the lifting groove (7).
6. An eccentric machining device of a check valve according to claim 2, characterized in that the oil filler pipe (24) is provided with a solenoid valve (25).
7. An eccentric machining device of a check valve according to claim 2, characterized in that oil receiving boxes (28) are inserted on both sides of the two risers and below the toothed plate (8), and the lower ends of the oil grooves (27) are communicated with the upper ends of the oil receiving boxes (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545005.2A CN113199053A (en) | 2021-05-19 | 2021-05-19 | Eccentric machining device of one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110545005.2A CN113199053A (en) | 2021-05-19 | 2021-05-19 | Eccentric machining device of one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113199053A true CN113199053A (en) | 2021-08-03 |
Family
ID=77032191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110545005.2A Withdrawn CN113199053A (en) | 2021-05-19 | 2021-05-19 | Eccentric machining device of one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113199053A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319145A (en) * | 2022-10-10 | 2022-11-11 | 南通友信环保科技有限公司 | Valve body forming device of soft seal butterfly valve |
-
2021
- 2021-05-19 CN CN202110545005.2A patent/CN113199053A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115319145A (en) * | 2022-10-10 | 2022-11-11 | 南通友信环保科技有限公司 | Valve body forming device of soft seal butterfly valve |
| CN115319145B (en) * | 2022-10-10 | 2023-08-18 | 南通友信环保科技有限公司 | Valve body forming device of soft sealing butterfly valve |
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Application publication date: 20210803 |
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| WW01 | Invention patent application withdrawn after publication |