CN110030446B - Quick-connection flange - Google Patents
Quick-connection flange Download PDFInfo
- Publication number
- CN110030446B CN110030446B CN201910417685.2A CN201910417685A CN110030446B CN 110030446 B CN110030446 B CN 110030446B CN 201910417685 A CN201910417685 A CN 201910417685A CN 110030446 B CN110030446 B CN 110030446B
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- Prior art keywords
- flange
- oil absorption
- groove
- connecting plate
- screw thread
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
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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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention relates to a quick-connection type flange which comprises a flange main body, a connecting plate, a connecting block, a fixing block, a through hole, a sealing plug, a sealing ring and a bolt hole, wherein the bolt hole is correspondingly formed in two sides of one end of the flange main body; the flange connecting structure has the advantages that the flange is prevented from rusting, and the connection and the disassembly of the external connecting pipe and the flange can be completed quickly.
Description
Technical Field
The invention relates to the technical field of pipeline connecting equipment, in particular to a quick-connection type flange.
Background
The flange connection is that two pipelines, pipe fittings or equipment are respectively fixed on a flange plate, a flange pad is arranged between the two flange plates and fastened together by bolts, and the connection is completed. Some pipe fittings and equipment are provided with flanges, and the flange connection is also the object of flange connection. The flange connection is an important connection mode for pipeline construction.
And traditional flange on the existing market all is the connected mode who adopts the integral type when taking over the pipe fitting with external, be not convenient for dismantle and the installation, and the precision of connecting can reduce along with the change of environment and the lapse of time, and simultaneously, traditional flange is in the use, because expose for a long time in the air, is easily by oxygen and moisture oxidation in the air, produces the rust stain, leads to later stage maintenance can't dismantle the flange, does not have the effect of self-lubricating. Therefore, it is necessary to design a quick-connect flange with self-lubricating effect.
Disclosure of Invention
In order to solve the above problems, the present invention provides a quick-connect flange, which can solve the problems in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a quick-connection flange comprises a flange main body, a connecting plate, a connecting block, a fixing block, through holes, a sealing plug, a sealing ring and bolt holes, wherein the bolt holes are correspondingly formed in two sides of one end of the flange main body;
the connecting plate comprises a placing groove, a semicircular clamping groove, a belt, a connecting hole, a traction belt, a roller and a roller, the placing groove is formed in the center of the top of the connecting plate, the semicircular clamping groove is formed in the top end of the placing groove, the connecting hole is formed in the middle of the connecting plate and is communicated with the placing groove, the rollers are horizontally mounted on the inner walls of the two sides of the bottom of the placing groove, the belt is sleeved on the outer wall of the roller, the top of the belt is connected with a universal joint through a bolt, the roller is arranged in one end of the bottom of the connecting plate and movably connected with the connecting plate through a rotating shaft, the traction belt is adhered to the outer wall of one side of the roller, a triangular barb is welded on the other side of the roller, the;
the connecting block comprises a first connecting groove, a first threaded cylinder and a fastening nut, the first connecting groove is formed in the top end of the connecting block, the threaded cylinder is welded inside the first connecting groove, and the fastening nut is sleeved on the outer wall of the threaded cylinder;
the fixed block includes second spread groove, second screw thread cylinder, steel ball and push pedal, and the second spread groove has been seted up to the inside of fixed block, and the inside welding of second spread groove has second screw thread cylinder, and the bottom outer wall of fixed block evenly imbeds has the steel ball, and the one end welding of fixed block has the push pedal.
Further, the sealing washer includes the fore-set, first oil absorption foam-rubber cushion, the filter screen, second oil absorption foam-rubber cushion and oil filler point, one side that the sealing washer is close to the sealing plug is connected with the fore-set, the oil filler point has been seted up to the inside of fore-set, and the oil filler point runs through in the inside of sealing washer, the both sides of fore-set all imbed there is second oil absorption foam-rubber cushion, and the end of second oil absorption foam-rubber cushion links to each other with the oil filler point, first oil absorption foam-rubber cushion is located the afterbody of oil filler point, and the embedding is at the opposite side outer wall of sealing washer, the central point of sealing washer puts and is provided with the filter screen, the inside lubricating oil of pouring into in oil filler point is absorbed to first oil absorption foam-rubber cushion, two when the flange main part is.
Further, the embedding of the bottom outer wall of bolt hole has the third oil absorption foam-rubber cushion, and the bottom equidistance adhesion of third oil absorption foam-rubber cushion has the oil absorption sponge post, and the embedding of oil absorption sponge post is in the inside of flange main part to meet with the second oil absorption foam-rubber cushion of fore-set one side, the inside lubricating oil in oil filler point is stored in the absorption of third oil absorption foam-rubber cushion, and when fixed to the flange main part through the bolt, the laminating of third oil absorption foam-rubber cushion is at the outer wall of bolt, prevents that the bolt from rustting.
Further, the counter bore has been seted up to second screw thread cylindrical inside central point, and the diameter of counter bore is the same with first screw thread cylindrical diameter, and first screw thread cylinder is pegged graft in the inside of counter bore, and reset spring has been placed at first screw thread cylindrical top, and fastening nut has seted up two different diameter screw holes, and the screw thread size phase-match on this screw hole and first screw thread cylinder and the second screw thread cylinder, can be in the inside round trip movement of fixed block for the connecting block.
Furthermore, the top that the one end of flange main part is close to the bolt hole is provided with the bearing lug, and the below that the one end of flange main part is close to the bolt hole has seted up the bearing groove, and is the cooperation structure, when carrying out the connection of flange main part, the quick butt joint of completion flange main part of being convenient for.
Furthermore, the outer wall of flange main part bonding has silica gel protective coat, causes the damage in order to prevent external force to the outer wall of flange main part.
Furthermore, the top central point of sealing plug puts the embedding and has sealed ball, and sealed ball supports the top at the oil filler point, for the convenience of pour into the inside of oil filler point with lubricating oil into, and the effectual leakproofness that increases the oil filler point.
The invention has the beneficial effects that:
1. the quick-insertion type mounting device is provided with the connecting plate, the connecting block, the fixing block and other components, and can effectively and quickly complete quick-insertion type mounting of the external connecting pipe through mutual matching among the connecting plate, the connecting block, the fixing block and other components, meanwhile, the triangular barbs can effectively increase the connection between the external connecting pipe and the flange to be tighter, and the external connecting pipe cannot be separated under the action of internal fluid pressure and external force.
2. In the process of being connected with the flange, can form one deck oil film at the binding face of flange and the inner wall of bolt hole, the effectual oxygen that prevents in the air and the connection face that moisture enters into the flange, the effectual flange of having solved exposes for a long time and takes place oxidation reaction in the air and produce rust stain, the problem that is difficult to dismantle.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a cross-sectional view of the overall construction of the present invention;
FIG. 2 is a side view of the overall structure of the present invention;
FIG. 3 is a schematic view of the seal ring construction of the present invention;
FIG. 4 is a partial perspective view of the drawing of the present invention;
FIG. 5 is a cross-sectional view of a web of the present invention;
fig. 6 is a cross-sectional view of a connecting block and a fixing block of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1-6, a quick-connect flange comprises a flange main body 1, a connecting plate 2, a connecting block 3, a fixing block 4, a through hole 5, a sealing plug 6, a sealing ring 7 and a bolt hole 8, wherein the bolt hole 8 is correspondingly formed in two sides of one end of the flange main body 1, the through hole 5 is formed below the bolt hole 8, the sealing ring 7 is installed at one end of the through hole 5, the sealing plug 6 is connected to the other end of the through hole 5, a groove is correspondingly formed in two sides of the other end of the flange main body 1, the connecting plate 2 is movably connected to the inside of the groove through a rotating shaft, the connecting block 3 is arranged on one side of the connecting plate 2, the connecting block 3 is connected with the;
the connecting plate 2 comprises a placing groove 21, a semicircular clamping groove 22, a belt 23, a connecting hole 24, a traction belt 25, a roller 26 and a roller 27, the placing groove 21 is arranged at the center of the top of the connecting plate 2, the semicircular clamping groove 22 is arranged at the top end of the placing groove 21, the connecting hole 24 is arranged at the middle part of the connecting plate 2, and is communicated with the placing groove 21, the inner walls of the two sides of the bottom of the placing groove 21 are horizontally provided with a roller 27, the outer wall of the roller 27 is sleeved with a belt 23, the top of the belt 23 is connected with a universal joint through a bolt, one end of the bottom of the connecting plate 2 is internally provided with a roller 26, the roller 26 is movably connected with the connecting plate 2 through a rotating shaft, a traction belt 25 is adhered to the outer wall of one side of the roller 26, a triangular barb is welded to the other side of the roller 26, the top of the traction belt 25 penetrates through the connecting hole 24 to be connected with the bottom of the belt 23, and a silica gel anti-skid pad is embedded into the outer wall of the bottom of the connecting plate 2;
the connecting block 3 comprises a first connecting groove 31, a first threaded cylinder 32 and a fastening nut 33, the first connecting groove 31 is formed in the top end of the connecting block 3, the threaded cylinder 32 is welded inside the first connecting groove 31, and the fastening nut 33 is sleeved on the outer wall of the threaded cylinder 32;
the fixed block 4 comprises a second connecting groove 41, a second threaded cylinder 42, steel balls 43 and a push plate 44, the second connecting groove 41 is formed in the fixed block 4, the second threaded cylinder 42 is welded in the second connecting groove 41, the steel balls 43 are uniformly embedded in the outer wall of the bottom of the fixed block 4, and the push plate 44 is welded at one end of the fixed block 4.
Further, the sealing ring 7 comprises a top column 71, a first oil absorption sponge cushion 72, a filter screen 73, a second oil absorption sponge cushion 74 and an oil filling hole 75, the top column 71 is connected to one side of the sealing ring 7 close to the sealing plug 6, the oil filling hole 75 is formed in the top column 71, the oil filling hole 75 penetrates through the inner part of the sealing ring 7, the two sides of the top column (71) are embedded with second oil absorption sponge cushions (74), and the second oil absorbing sponge pad 74 is connected at its end to the oil hole 75, the first oil absorbing sponge pad 72 is located at the rear of the oil hole 75, and is embedded in the outer wall of the other side of the sealing ring 7, a filter screen 73 is arranged at the central position of the sealing ring 7, the first oil absorbing sponge cushion 72 absorbs the lubricating oil injected into the oil injection hole 75, when the two flange main bodies 1 are connected, the first oil absorption spongy cushion 72 is extruded, and lubricating oil is sprayed to two sides and flows to the outer wall of the flange main body 1 to achieve a self-lubricating effect.
Further, the embedding of the bottom outer wall of bolt hole 8 has third oil absorption foam-rubber cushion 81, and the adhesion of the bottom equidistance of third oil absorption foam-rubber cushion 81 has the oil absorption sponge post, and the oil absorption sponge post embedding is in the inside of flange main part 1 to meet with the second oil absorption foam-rubber cushion 74 of fore-set 71 one side, the inside lubricating oil in oil filler point 75 is stored in the absorption of third oil absorption foam-rubber cushion 81, when fixed to flange main part 1 through the bolt, the laminating of third oil absorption foam-rubber cushion 81 is at the outer wall of bolt, prevent that the bolt from rustting.
Further, the counter bore has been seted up to the inside central point of second screw thread cylinder 42, and the diameter of counter bore is the same with the diameter of first screw thread cylinder 32, and first screw thread cylinder 32 pegs graft in the inside of counter bore, and reset spring has been placed at the top of first screw thread cylinder 32, and fastening nut 33 has seted up two different diameter screw holes, and the screw thread size phase-match on this screw hole and first screw thread cylinder 32 and the second screw thread cylinder 42, can be in the inside round trip movement of fixed block 4 for connecting block 3.
Further, the top that the one end of flange main part 1 is close to bolt hole 8 is provided with the bearing lug, and the below that the one end of flange main part 1 is close to bolt hole 8 has seted up the bearing groove, and is the cooperation structure, when carrying out the connection of flange main part 1, the quick butt joint of completion flange main part 1 of being convenient for.
Further, the outer wall adhesion of flange main part 1 has silica gel protective coat, causes the damage in order to prevent external force to the outer wall of flange main part 1.
Furthermore, the top center position of sealing plug 6 imbeds and has sealed ball, and sealed ball supports the top at oil filler point 75, in order to make things convenient for pour into lubricating oil into the inside of oil filler point 75, and the effectual leakproofness that has increased oil filler point 75.
When in work:
the flanges are connected with each other: lubricating oil is injected into the oil filling hole 75 through an injector, the first oil absorption sponge cushion 72, the second oil absorption sponge cushion 74 and the third oil absorption sponge cushion 81 absorb the lubricating oil, fingers lightly touch the first oil absorption sponge cushion 72, the second oil absorption sponge cushion 74 and the third oil absorption sponge cushion 81 until the fingers are stained with the lubricating oil, the sealing plug 6 is screwed through a screwdriver to enable a sealing ring ball at the top of the sealing plug to be propped against the top of the oil filling hole 75, then a bearing convex block at one end of one flange main body 1 is butted with a bearing groove at one end of the other flange main body 1, a bolt is inserted into the inside of the bolt hole 8 and an external nut is screwed through a spanner, so that the two attaching surfaces of the flange main bodies 1 are tightly connected together, in the process, the position of the support column 71 is limited by the sealing plug 6, when the flange main bodies 1 are attached to each other, the first oil absorption sponge cushion 72 is compressed under the action of the extruding force, inside adsorbed lubricating oil flows to both sides, enters into the gap department of 1 binding face of flange main part, forms the one deck oil film to oxygen and moisture in the isolated air, effectual flange main part 1 of avoiding is by the oxidation rust.
When the external connecting pipe is connected: insert the inner wall of flange main part 1 according to certain degree of depth with external pipe, promote fixed block 4 to the outside again, drive 4 end-to-end welded push pedal 44 of fixed block and remove in the inside of standing groove 21, extrusion connecting plate 2 hugs closely the outer wall of taking over outward round the pivot, and simultaneously, push pedal 44 is in the inside removal of standing groove 21, it rotates at running roller 27's outer wall to drive belt 23, thereby the traction belt 25 that the pulling bottom is connected, it is rotatory to drive gyro wheel 26, make the triangle barb of 26 outer walls of gyro wheel tightly block the outer wall of taking over outward, twist through the spanner at last and move fastening nut 33 and be connected to together first threaded cylinder 32 and second threaded cylinder 42, prevent that fixed block 4 from kick-backing and can accomplish the connection of external pipe.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a connect formula flange soon, includes flange main part (1), connecting plate (2), connecting block (3), fixed block (4), through-hole (5), sealing plug (6), sealing washer (7) and bolt hole (8), its characterized in that: bolt holes (8) are correspondingly formed in two sides of one end of the flange main body (1), through holes (5) are formed below the bolt holes (8), a sealing ring (7) is installed at one end of each through hole (5), the other end of each through hole (5) is connected with a sealing plug (6), grooves are correspondingly formed in two sides of the other end of the flange main body (1), a connecting plate (2) is movably connected inside each groove through a rotating shaft, a connecting block (3) is arranged on one side of each connecting plate (2), the connecting block (3) is connected with the flange main body (1) through threads, and a fixing block (4) is connected to one end, close to the connecting plate (2);
the connecting plate (2) comprises a placing groove (21), a semicircular clamping groove (22), a belt (23), a connecting hole (24), a traction belt (25), rollers (26) and rollers (27), the placing groove (21) is arranged at the center of the top of the connecting plate (2), the semicircular clamping groove (22) is formed in the top end of the placing groove (21), the connecting hole (24) is arranged in the middle of the connecting plate (2) and communicated with the placing groove (21), the rollers (27) are horizontally arranged on the inner walls of the two sides of the bottom of the placing groove (21), the belt (23) is sleeved on the outer wall of the rollers (27), the top of the belt (23) is connected with a universal joint through bolts, the rollers (26) are arranged in one end of the bottom of the connecting plate (2), the rollers (26) are movably connected with the connecting plate (2) through rotating shafts, the traction belt (25) is adhered to the outer wall of one side of the rollers (, the top of the traction belt (25) penetrates through the connecting hole (24) and is connected with the bottom of the belt (23), and a silica gel anti-slip pad is embedded in the outer wall of the bottom of the connecting plate (2);
the connecting block (3) comprises a first connecting groove (31), a first threaded cylinder (32) and a fastening nut (33), the first connecting groove (31) is formed in the top end of the connecting block (3), the threaded cylinder (32) is welded inside the first connecting groove (31), and the fastening nut (33) is sleeved on the outer wall of the threaded cylinder (32);
fixed block (4) have been seted up second spread groove (41) including second spread groove (41), second screw thread cylinder (42), steel ball (43) and push pedal (44) in the inside of fixed block (4), and the inside welding of second spread groove (41) has second screw thread cylinder (42), and the bottom outer wall of fixed block (4) evenly is embedded in steel ball (43), and the one end welding of fixed block (4) has push pedal (44).
2. A quick connect flange according to claim 1, wherein: sealing washer (7) are including fore-set (71), first oil absorption foam-rubber cushion (72), filter screen (73), second oil absorption foam-rubber cushion (74) and oil filler point (75), one side that sealing washer (7) are close to sealing plug (6) is connected with fore-set (71), oil filler point (75) have been seted up to the inside of fore-set (71), and oil filler point (75) run through in the inside of sealing washer (7), the both sides of fore-set (71) all are embedded in second oil absorption foam-rubber cushion (74), and the end of second oil absorption foam-rubber cushion (74) links to each other with oil filler point (75), first oil absorption foam-rubber cushion (72) are located the afterbody of oil filler point (75), and the embedding is at the opposite side outer wall of sealing washer (7), the central point of sealing washer (7) puts and is provided with filter.
3. A quick connect flange according to claim 1, wherein: the bottom outer wall of the bolt hole (8) is embedded with a third oil absorption sponge cushion (81), oil absorption sponge columns are adhered to the bottom of the third oil absorption sponge cushion (81) at equal intervals, the oil absorption sponge columns are embedded into the flange main body (1), and the oil absorption sponge columns are connected with a second oil absorption sponge cushion (74) on one side of the top column (71).
4. A quick connect flange according to claim 1, wherein: the counter bore has been seted up to the inside central point of second screw thread cylinder (42), and the diameter of counter bore is the same with the diameter of first screw thread cylinder (32), and peg graft in the inside of counter bore in first screw thread cylinder (32), and reset spring has been placed at the top of first screw thread cylinder (32), and two different diameter screw holes have been seted up to fastening nut (33), and the screw thread size phase-match on this screw hole and first screw thread cylinder (32) and second screw thread cylinder (42).
5. A quick connect flange according to claim 1, wherein: the flange is characterized in that a bearing lug is arranged above one end of the flange main body (1) close to the bolt hole (8), a bearing groove is arranged below one end of the flange main body (1) close to the bolt hole (8), and the flange is of a matched structure.
6. A quick connect flange according to claim 1, wherein: the outer wall of the flange main body (1) is adhered with a silica gel protective outer sleeve.
7. A quick connect flange according to claim 1, wherein: the top center position of sealing plug (6) has embedded sealed ball, and sealed ball supports the top at oil filler point (75).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417685.2A CN110030446B (en) | 2019-05-20 | 2019-05-20 | Quick-connection flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910417685.2A CN110030446B (en) | 2019-05-20 | 2019-05-20 | Quick-connection flange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110030446A CN110030446A (en) | 2019-07-19 |
| CN110030446B true CN110030446B (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910417685.2A Active CN110030446B (en) | 2019-05-20 | 2019-05-20 | Quick-connection flange |
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| CN (1) | CN110030446B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049998B (en) * | 2020-09-27 | 2024-06-07 | 张家港华日法兰有限公司 | Flange structure with high sealing performance and rust prevention function and processing method thereof |
| CN115142996B (en) * | 2022-07-25 | 2023-12-22 | 中国人民解放军海军工程大学 | Assembly structure for overhead air filter inlet pipe in diesel engine supercharger |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4405312A (en) * | 1981-08-31 | 1983-09-20 | Abbott Laboratories | Connecting device for medical liquid containers |
| US10012333B2 (en) * | 2012-06-06 | 2018-07-03 | Langdon Incorporated | Fluid conditioning devices and assemblies |
| CN203784515U (en) * | 2014-01-23 | 2014-08-20 | 天津世创机械制造有限公司 | Flange mounting structure for high-pressure pipe |
| JP6383579B2 (en) * | 2014-06-16 | 2018-08-29 | 信越化学工業株式会社 | Flange fixing structure |
| CN208750220U (en) * | 2018-09-03 | 2019-04-16 | 无锡艾科隆环境建设有限公司 | A kind of chemical industry pipeline structure |
| CN109268592B (en) * | 2018-09-30 | 2023-09-26 | 国网浙江省电力有限公司宁波供电公司 | Connecting device suitable for transformer oil drain valve |
| CN109296849A (en) * | 2018-11-05 | 2019-02-01 | 泰州市超威机电设备制造有限公司 | A kind of flange convenient for handling |
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Effective date of registration: 20191210 Address after: 250000 south of Haidong Industrial Park, Puji street, Zhangqiu District, Jinan City, Shandong Province Applicant after: Shandong chongnuo Forging Co., Ltd Address before: 233010 No. 173 Daqing Road, Yuhui District, Bengbu City, Anhui Province (Anhui Fengyuan Chemical Equipment Co., Ltd.) Applicant before: Xu Jijie |
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