CN108775427B - Micro-motion type gravity flap valve assembly, gravity flap valve and feeding pipe - Google Patents
Micro-motion type gravity flap valve assembly, gravity flap valve and feeding pipe Download PDFInfo
- Publication number
- CN108775427B CN108775427B CN201810809852.3A CN201810809852A CN108775427B CN 108775427 B CN108775427 B CN 108775427B CN 201810809852 A CN201810809852 A CN 201810809852A CN 108775427 B CN108775427 B CN 108775427B
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- Prior art keywords
- valve plate
- valve
- counterweight
- pivot
- rotating shaft
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- 230000005484 gravity Effects 0.000 title claims abstract description 33
- 238000010030 laminating Methods 0.000 claims abstract 2
- 241000237509 Patinopecten sp. Species 0.000 claims 2
- 235000020637 scallop Nutrition 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 24
- 238000009434 installation Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- 230000005486 microgravity Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
Classifications
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a micro-motion type gravity flap valve assembly, a gravity flap valve and a feeding pipe. Including pivot, counter weight structure and valve plate subassembly, the counter weight structure distributes in the radial both sides of pivot with the valve plate subassembly, and the valve plate subassembly includes valve plate frame and valve plate, and valve plate frame one end and pivot fixed connection, valve plate and valve plate frame are articulated, and its articulated position is located the lower half of valve plate, and the valve plate is when closing the state, its upper portion with the laminating of valve plate frame is equipped with the distance between its lower part and the valve plate frame, counter weight structure fixed connection is at the both ends of pivot. The invention adopts a double-lever structure, and can effectively eliminate the undershoot inertia of materials, thereby accurately controlling the opening of the valve plate and avoiding the overlarge opening of the valve plate. The balancing weight position is adjustable, and when installation angle, and material density are different, its sensitivity is adjusted to the accessible regulation balancing weight position on the counter weight pole. The valve plate frame and the rotating shaft are reliably connected by arranging the grooves and the protrusions on the valve plate frame and the rotating shaft.
Description
Technical Field
The invention relates to the field of flap valves, in particular to a micro-motion type gravity flap valve assembly, a gravity flap valve and a feeding pipe.
Background
The flap valve is one of the main auxiliary materials widely applied to the cement building material industry and the metallurgical industry, and plays important roles of material diversion, sealing and the like. The principle is that the valve plate of the flap valve is automatically opened under the action of the gravity of the materials, and after the materials fall, the counterweight lever system enables the valve plate to automatically reset, so that the wild wind is prevented from blowing in, the conveying of the materials is completed, and the effective guarantee is provided for the normal operation of host equipment. The flap valve among the prior art generally has a defect, like a valve plate subassembly, gravity flap valve and use the inlet pipe of this gravity flap valve of application number 201620985350.2, and the flap valve of this structure can lead to the opening too big under the inertia impact of material when the material falls to open, leads to sealed effect relatively poor.
Disclosure of Invention
The invention aims at overcoming the defects in the prior art and provides a micro gravity flap valve assembly, a gravity flap valve and a feeding pipe.
In order to achieve the above object, in a first aspect, the present invention provides a micro gravity flap valve assembly, including a rotating shaft, a counterweight structure and a valve plate assembly, where the rotating shaft, the counterweight structure and the valve plate assembly form a lever structure with the rotating shaft as a fulcrum, the counterweight structure and the valve plate assembly are distributed on two radial sides of the rotating shaft, the valve plate assembly includes a valve plate frame and a valve plate, one end of the valve plate frame is fixedly connected with the rotating shaft, the valve plate is hinged with the valve plate frame, and the hinge position of the valve plate is located at the lower half of the valve plate, when the valve plate is in a closed state, the upper part of the valve plate is attached to the valve plate frame, a distance is provided between the lower part of the valve plate and the valve plate frame, and the counterweight structure is fixedly connected at two ends of the rotating shaft.
Preferably, the maximum angle by which the valve plate is rotated about its hinge position with the valve plate holder is 25 to 30 °.
Preferably, the valve plate frame both sides are equipped with the connection ear, be equipped with the round hole that supplies the pivot to pass on the connection ear, be provided with the recess in the round hole, be equipped with the arch with recess cooperation position in the pivot, the connection ear is fixed in the pivot.
Preferably, the groove is a rectangular groove.
Preferably, the counterweight structure comprises two counterweight rods fixed at two ends of the rotating shaft respectively and a counterweight block arranged on the counterweight rods, the counterweight rods are sleeved with the counterweight blocks, two sides of each counterweight block are provided with fixing blocks, and the fixing blocks are provided with elastic bolts.
In a second aspect, the invention also provides a gravity flap valve, which comprises a valve body, wherein the valve body is provided with the micro-motion gravity flap valve assembly, the valve plate assembly is arranged on the inner side of the valve body, labyrinth seal seats are arranged on the two outer sides of the valve body, the two ends of the rotating shaft respectively penetrate through the labyrinth seal seats and extend out of the outer side of the valve body, and the counterweight structure is arranged on the two outer sides of the valve body.
Preferably, the rotating shaft at the outer side of the counterweight structure is also provided with a limiting block, two outer sides of the valve body are provided with stop blocks, and the upper ends of the stop blocks and the limiting block are provided with a matched limiting structure.
Preferably, the limiting structure comprises a fan-shaped opening arranged on the limiting block and a blade-shaped end part arranged on the stop block, and the end part is arranged in the fan-shaped opening.
Preferably, an access cover is further arranged on the upper side of the valve body.
In a third aspect, the invention also provides a feed tube comprising the gravity gate valve described above.
The beneficial effects are that: the invention adopts a double-lever structure, can effectively eliminate the undershoot inertia of materials, thereby accurately controlling the opening of the valve plate, avoiding the overlarge opening of the valve plate and having better sealing effect. The balancing weight position is adjustable, and when installation angle, and material density are different, its sensitivity is adjusted to the accessible regulation balancing weight position on the counter weight pole. Through set up recess and arch in valve plate frame and pivot, make valve plate frame and pivot reliable connection, pivot and valve body are through setting up labyrinth seal, further improve sealed effect.
Drawings
FIG. 1 is a schematic view of a micro gravity flap valve assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a valve plate assembly according to an embodiment of the present invention;
FIG. 3 is a perspective view of a valve plate assembly of an embodiment of the present invention;
FIG. 4 is a schematic side cross-sectional view of a gravity gate valve according to an embodiment of the invention;
FIG. 5 is a perspective view of a gravity gate valve according to an embodiment of the invention;
fig. 6 is a partial enlarged view of the area a in fig. 5.
Detailed Description
The invention will be further illustrated by the following drawings and specific examples, which are carried out on the basis of the technical solutions of the invention, it being understood that these examples are only intended to illustrate the invention and are not intended to limit the scope of the invention.
As shown in fig. 1 to 3, the embodiment of the invention provides a micro gravity flap valve assembly, which comprises a rotating shaft 1, a counterweight structure 2 and a valve plate assembly 3, wherein the counterweight structure 2 and the valve plate assembly 3 are distributed on two radial sides of the rotating shaft 1, the valve plate assembly 3 comprises a valve plate frame 31 and a valve plate 32, one end of the valve plate frame 31 is fixedly connected with the rotating shaft 1, the valve plate 32 is hinged with the valve plate frame 31, the hinged position is positioned on the lower half part of the valve plate 31, and the valve plates 31 with different sizes are different in hinged position due to different masses. The hinge position of the valve plate 32 and the valve plate holder 31 is defined as a boundary, and the hinge position is defined as an upper portion and a lower portion, and the lower half of the hinge valve plate 31 keeps the upper portion of the valve plate 32 in contact with the valve plate holder 31 due to the gravity when the valve plate is in a closed state, and a distance is provided between the lower portion of the valve plate 32 and the valve plate holder 31. The valve plate 32 forms the first lever structure taking the articulated position as the fulcrum on the upper side of the valve plate frame 31, when the material falls above the valve plate 32, the material slides downwards to press the lower end of the valve plate 32, so that the valve plate 32 rotates downwards towards the lower end and upwards around the articulated position of the valve plate 32 and the valve plate frame 31 until the lower end of the valve plate 31 is in contact with the valve plate frame 31, and the counterweight structure 2 is fixedly connected at two ends of the rotating shaft 1. Thus, the rotary shaft 1, the counterweight structure 2 and the valve plate assembly 3 constitute a second lever structure with the rotary shaft as a fulcrum.
The principle of the invention is as follows: when the material is less, the valve plate 32 is slightly opened after being slightly rotated due to the lighter material, and at this time, the valve plate holder 31 is not rotated. When the material is large, the valve plate 32 is rotated to a maximum angle so that the lower end of the valve plate 32 is in contact with the valve plate frame 31. Under the action of the gravity of the materials, the lower end of the valve plate 31 presses down the valve plate frame 31, so that the valve plate frame 31 overturns after overcoming the gravity of the counterweight structure 2, and then the valve plate 32 is further opened along with the valve plate frame to allow the materials to flow downwards. Because the valve plate 32 buffers the undershoot inertia of the material to a certain extent, the valve plate 32 is driven by the valve plate frame 31 to rotate and open without being excessively large. When the material on the upper side of the valve plate 32 is emptied, the valve plate 32 and the valve plate frame 31 can automatically restore to the original positions under the action of the counter weight.
The distance between the lower portion of the valve plate 32 and the valve plate holder 31 varies depending on the size of the valve plate, and is generally set such that the maximum angle by which the valve plate 32 is rotated about its hinge position with the valve plate holder 31 is 25 to 30 °.
In order to facilitate the fixation of the valve plate frame 31 on the rotating shaft 1, two sides of one end of the valve plate frame 31 close to the rotating shaft are provided with connecting lugs 311, the connecting lugs 311 are provided with round holes 312 for the rotating shaft 1 to pass through, grooves 313 are arranged in the round holes 312, the matching positions of the rotating shaft 1 and the grooves 313 are provided with protrusions 11, and then the connecting lugs 311 are fixed on the rotating shaft 1. The connection between the connection lug 311 and the rotating shaft 1 can be welded, and for convenient maintenance, a threaded hole is preferably formed in the connection lug 311, and a screw is adopted to be abutted to the rotating shaft 1 after passing through the threaded hole, so that fixation is realized. The recess 313 is preferably a rectangular recess, preferably provided at one side of the valve plate holder 31, and the position of the screw hole is preferably provided at the opposite side of the recess 313. The protrusion 11 cooperates with the recess 313 to make the connection between the two more reliable.
The counterweight structure 2 of the embodiment of the invention comprises two counterweight rods 21 and counterweight blocks 22 respectively arranged on the counterweight rods 21, wherein the two counterweight rods 21 are respectively fixed at two ends of the rotary shaft 1, the cross section of the counterweight rod 21 is preferably rectangular, rectangular holes are formed in the counterweight blocks 22, so that the counterweight blocks 22 can be sleeved on the counterweight rods 21, the counterweight blocks 22 can be prevented from rotating on the counterweight rods 21, fixed blocks 23 are arranged on two sides of the counterweight blocks 22, rectangular holes for the counterweight rods 21 to pass through are also formed in the fixed blocks 23, and elastic bolts are arranged on the fixed blocks. After the elastic bolt is loosened, the position of the balancing weight 22 on the balancing weight rod 1 can be adjusted, and after the elastic bolt is tightened, the balancing weight 22 can be fixed on the balancing weight rod 21. The sensitivity of the device can be adjusted by adjusting the position of the balancing weight 22 on the balancing weight rod 21 when the installation angle and the material density are different.
As shown in fig. 3 to 6, based on the above embodiment, it will be understood by those skilled in the art that the present invention further provides a gravity flap valve, which includes a valve body 4, the valve body 4 is provided with the micro gravity flap valve assembly, wherein the valve plate assembly 3 is disposed inside the valve body 4, labyrinth seal seats 5 are disposed on two outer sides of the valve body 4, two ends of the rotating shaft 1 respectively pass through the labyrinth seal seats 5 and then extend out of the valve body 4, and the counterweight structure 2 is disposed on two outer sides of the valve body 1. The rotating shaft 1 can freely rotate in the labyrinth seal seat 5, can bear the higher temperature in the interior caused by materials, and has better tightness.
In order to prevent the opening and closing angle of the flap valve assembly from being too large, a mechanical limit is further arranged on the valve body 4. The rotary shaft 1 outside the counterweight structure 2 is also provided with a limiting block 6, two outer sides of the valve body 4 are provided with a stop block 7, the stop block 7 is arranged outside the valve body 4 through a bracket 10, the bracket 10 is supported by a supporting device 12 in a bolt connection manner, and the upper end of the stop block 7 and the limiting block 6 are provided with a matched limiting structure. The limit structure can adopt various limit structures in the prior art, such as limit plates arranged at two outer sides of the limit block 6. A more alternative limiting structure is that a fan-shaped opening 61 of the limiting block 6 is provided with a blade-shaped end 71 on the stop block 7, and the end 71 is arranged in the fan-shaped opening 61, so that mechanical limiting can be realized. For easy maintenance, an access cover 8 is also provided on the upper side of the valve body 4. The access cover 8 is detachably fixed to the valve body 4 by means of a plurality of bolts, the lower ends of which are preferably hinged to the valve body 41, and two handles 9 are provided on the outside of the access cover in order to facilitate the removal and installation of the access cover 8.
Based on the above embodiments, it will be appreciated by those skilled in the art that the present invention also provides a feed tube comprising the gravity gate valve described above.
In summary, the invention adopts the double-lever structure, and can effectively eliminate the undershoot inertia of materials, thereby accurately controlling the opening of the valve plate, avoiding the overlarge opening of the valve plate and having better sealing effect. The balancing weight position is adjustable, and when installation angle, and material density are different, its sensitivity is adjusted to the accessible regulation balancing weight position on the counter weight pole. Through set up recess and arch in valve plate frame and pivot, make valve plate frame and pivot reliable connection, pivot and valve body are through setting up labyrinth seal, further improve sealed effect.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that other parts not specifically described are within the prior art or common general knowledge to a person of ordinary skill in the art. Modifications and alterations may be made without departing from the principles of this invention, and such modifications and alterations should also be considered as being within the scope of the invention.
Claims (10)
1. The utility model provides a fine motion formula gravity flap valve subassembly, its characterized in that includes pivot, counter weight structure and valve plate subassembly, pivot, counter weight structure and valve plate subassembly have formed the lever structure that uses the pivot as the fulcrum, counter weight structure and valve plate subassembly distribute in the radial both sides of pivot, the valve plate subassembly includes valve grillage and valve plate, valve plate frame one end and pivot fixed connection, the valve plate articulates with the valve plate frame, and its articulated position is located the lower half of valve plate, when the valve plate is in the closed condition, its upper portion with the laminating of valve plate frame, be equipped with the distance between its lower part and the valve plate frame, counter weight structure fixed connection is at the both ends of pivot.
2. The micro-motion gravity flap valve assembly according to claim 1, wherein the maximum angle of rotation of the valve plate about its hinge position with the valve plate holder is 25 to 30 °.
3. The micro-motion type gravity flap valve assembly according to claim 1, wherein connecting lugs are arranged on two sides of the valve plate frame, round holes for the rotating shaft to pass through are formed in the connecting lugs, grooves are formed in the round holes, protrusions are arranged on the rotating shaft at positions matched with the grooves, and the connecting lugs are fixed on the rotating shaft.
4. A micro-motion gravity plate valve assembly according to claim 3, wherein the recess is a rectangular recess.
5. The micro-motion type gravity flap valve assembly according to claim 1, wherein the counterweight structure comprises two counterweight rods fixed at two ends of the rotating shaft respectively and a counterweight block arranged on the counterweight rods, the counterweight block is sleeved on the counterweight rods, two sides of the counterweight block are provided with fixed blocks, and the fixed blocks are provided with elastic bolts.
6. The gravity flap valve comprises a valve body, and is characterized in that the valve body is provided with the micro-motion gravity flap valve assembly according to any one of claims 1 to 5, the valve plate assembly is arranged on the inner side of the valve body, labyrinth seal seats are arranged on the two outer sides of the valve body, two ends of a rotating shaft respectively penetrate through the labyrinth seal seats and extend out of the outer side of the valve body, and a counterweight structure is arranged on the two outer sides of the valve body.
7. The gravity flap valve according to claim 6, wherein a limiting block is further arranged on the rotating shaft at the outer side of the counterweight structure, two outer sides of the valve body are provided with stop blocks, and the upper ends of the stop blocks and the limiting block are provided with matched limiting structures.
8. The gravity flap valve of claim 7 wherein the limiting structure includes a scallop provided on the limiting block and a knife-like end provided on the stop, the end being provided within the scallop.
9. The gravity flap valve of claim 6, wherein the upper side of the valve body is further provided with an access cover.
10. A feed tube, characterized in that: a gravity plate valve comprising any of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809852.3A CN108775427B (en) | 2018-07-23 | 2018-07-23 | Micro-motion type gravity flap valve assembly, gravity flap valve and feeding pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810809852.3A CN108775427B (en) | 2018-07-23 | 2018-07-23 | Micro-motion type gravity flap valve assembly, gravity flap valve and feeding pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108775427A CN108775427A (en) | 2018-11-09 |
| CN108775427B true CN108775427B (en) | 2023-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810809852.3A Active CN108775427B (en) | 2018-07-23 | 2018-07-23 | Micro-motion type gravity flap valve assembly, gravity flap valve and feeding pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108775427B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382899B (en) * | 2022-02-23 | 2024-03-08 | 中国中材国际工程股份有限公司 | Flap valve with double valve plates driven by single motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002267034A (en) * | 2001-03-06 | 2002-09-18 | Jeol Ltd | Pressure relief valve of clean room, etc. |
| CN205013706U (en) * | 2015-09-25 | 2016-02-03 | 浙江亨恩托机电工程有限公司 | Pre -heater high temperature flap valve |
| EP2988040A1 (en) * | 2014-08-20 | 2016-02-24 | JKF Industri A/S | A safety valve and a safety arrangement for a fluid piping system |
| CN206036313U (en) * | 2016-08-30 | 2017-03-22 | 郑州三和水工机械有限公司 | Valve plate subassembly, gravity flap valve and use inlet pipe of this gravity flap valve |
| WO2017066167A1 (en) * | 2015-10-16 | 2017-04-20 | Borgwarner Inc. | Bypass valve for turbocharger |
| JP2017180655A (en) * | 2016-03-30 | 2017-10-05 | 株式会社荏原製作所 | Non-return valve and self-priming pump |
| CN208816746U (en) * | 2018-07-23 | 2019-05-03 | 南京西普重型机械有限公司 | A kind of inching gravity turnover panel valve module, gravity flap valve and feed pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6106073B2 (en) * | 2013-12-10 | 2017-03-29 | 株式会社ニフコ | Flap valve device and gas-liquid separator equipped with flap valve device |
-
2018
- 2018-07-23 CN CN201810809852.3A patent/CN108775427B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002267034A (en) * | 2001-03-06 | 2002-09-18 | Jeol Ltd | Pressure relief valve of clean room, etc. |
| EP2988040A1 (en) * | 2014-08-20 | 2016-02-24 | JKF Industri A/S | A safety valve and a safety arrangement for a fluid piping system |
| CN205013706U (en) * | 2015-09-25 | 2016-02-03 | 浙江亨恩托机电工程有限公司 | Pre -heater high temperature flap valve |
| WO2017066167A1 (en) * | 2015-10-16 | 2017-04-20 | Borgwarner Inc. | Bypass valve for turbocharger |
| JP2017180655A (en) * | 2016-03-30 | 2017-10-05 | 株式会社荏原製作所 | Non-return valve and self-priming pump |
| CN206036313U (en) * | 2016-08-30 | 2017-03-22 | 郑州三和水工机械有限公司 | Valve plate subassembly, gravity flap valve and use inlet pipe of this gravity flap valve |
| CN208816746U (en) * | 2018-07-23 | 2019-05-03 | 南京西普重型机械有限公司 | A kind of inching gravity turnover panel valve module, gravity flap valve and feed pipe |
Non-Patent Citations (1)
| Title |
|---|
| 翻板式截止阀设计;张辉,孙丽艳,孙荣权;阀门(第02期);全文 * |
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| CN108775427A (en) | 2018-11-09 |
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Effective date of registration: 20230824 Address after: 26th Floor, Haitong Building, No. 100 Qinhuai Road, Jiangning District, Nanjing City, Jiangsu Province, 210000 Applicant after: Nanjing Xipu International Engineering Co.,Ltd. Address before: 210000 building 3, No.5, Hongguang East Road, economic development zone, Lishui District, Nanjing City, Jiangsu Province Applicant before: NANJING C-HOPE CEMENT ENGINEERING GROUP Co.,Ltd. |
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