CN209943776U - Connecting piece of water supply pipeline and water supply system comprising same - Google Patents
Connecting piece of water supply pipeline and water supply system comprising same Download PDFInfo
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- CN209943776U CN209943776U CN201920451696.8U CN201920451696U CN209943776U CN 209943776 U CN209943776 U CN 209943776U CN 201920451696 U CN201920451696 U CN 201920451696U CN 209943776 U CN209943776 U CN 209943776U
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Abstract
The utility model discloses a connecting piece of water supply pipe reaches water supply system including this connecting piece, the connecting piece include the joint portion that is connected with water supply pipe, the joint portion includes: the first metal pipe comprises a first metal pipe part, a second metal pipe part and a compression pipe part, wherein the first end of the compression pipe part is connected with the first metal pipe part, the second end of the compression pipe part is connected with the second metal pipe part, and the cross section of the compression pipe part is gradually reduced along the direction from the first end to the second end; the first plastic pipe is arranged at the periphery of the first metal pipe, the inner wall surface of the first plastic pipe is connected with the outer wall surface of the first metal pipe part, an annular groove for inserting a water supply pipeline is formed by the first plastic pipe, the pressing pipe part and the second metal pipe part in a surrounding mode, and the outer wall surface of the pressing pipe part can be abutted to the water supply pipeline inserted into the annular groove. So set up, water supply system's leakproofness becomes good, the water pressure resistance improves, avoid producing economic loss, has improved the quality and the purity of water, has improved the hot melt quality of plastic tubing.
Description
Technical Field
The utility model relates to a water supply system technical field, more specifically say, relate to a water supply pipe's connecting piece and water supply system including this connecting piece.
Background
In the life, underground transportation water source all uses water supply pipe, and a plurality of water supply pipe are connected to guarantee the remote transport at water source, the quality of water that water supply pipe carried receives extensive attention simultaneously.
In the prior art, a water supply pipeline and a water supply pipeline can be connected through a connecting piece, the water supply pipeline and the connecting piece respectively comprise a metal layer and a plastic pipe arranged on the periphery of the metal layer, and an inserting groove for inserting the end part of the water supply pipeline is arranged between the metal layer of the connecting piece and the plastic pipe, so that the connecting piece and the water supply pipeline are connected in a socket joint mode, but in the mode, a gap is formed between the metal layer of the water supply pipeline and the metal layer of the connecting piece, and the metal layers of the connecting piece and the metal layers do not completely seal water, so that the sealing property of the water supply system is influenced, the water pressure resistance of the water supply system is; and the water in the water supply pipeline is contacted with the plastic pipe through the gap, which can affect the quality and the purity of the water and can also lead the hot melting quality between the plastic pipe of the water supply pipeline and the plastic pipe of the connecting piece to be poor.
Therefore, how to solve the problems of poor sealing performance and poor anti-water pressure capability of a water supply system, easy economic loss, influence on the quality and purity of water and the hot melting quality of a plastic pipe in the prior art becomes an important technical problem to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a water supply pipe's connecting piece is poor in order to solve the leakproofness that water supply system exists among the prior art, anti water pressure ability is poor, easily produce economic loss, influences the quality of water and the technical problem of purity, influence the hot melt quality of plastic tubing. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.
The utility model provides a connecting piece of water supply pipe, including being used for the joint portion that is connected with water supply pipe, a serial communication port, the joint portion includes:
the first metal pipe comprises a first metal pipe part, a second metal pipe part arranged at the end part of the first metal pipe part and a compression pipe part, wherein the first end of the compression pipe part is connected with the first metal pipe part, the second end of the compression pipe part is connected with the second metal pipe part, and the cross section of the compression pipe part is gradually reduced along the direction from the first end to the second end;
the first plastic pipe is arranged on the periphery of the first metal pipe and comprises a first plastic pipe part and a second plastic pipe part connected with the end part of the first plastic pipe part, and the inner wall surface of the first plastic pipe part is connected with the outer wall surface of the first metal pipe part;
a gap is formed between the inner wall surface of the second plastic pipe portion and the outer wall surface of the second metal pipe portion, an annular groove used for inserting the end portion of the water supply pipeline is formed by the compression pipe portion, the second metal pipe portion and the second plastic pipe portion in a surrounding mode, and the outer wall surface of the compression pipe portion can abut against the water supply pipeline inserted into the annular groove.
Preferably, the included angle a between the tangent line of the outer wall of the compaction pipe part at any position and the central axis is the same.
Preferably, the included angle a is 30-60 degrees.
Preferably, the number of the joint parts is at least two, and the joint parts are communicated with each other.
Preferably, the first metal pipe part, the second metal pipe part and the compression pipe part are of an integrally formed structure, and the first plastic pipe part and the second plastic pipe part are of an integrally formed structure.
Preferably, the outer wall surface of the first metal pipe part is connected with the inner wall surface of the first plastic pipe part through an adhesive.
Preferably, the first plastic pipe is made of tripropylene polypropylene, and the first metal pipe is made of stainless steel.
The utility model also provides a water supply system, including two at least water supply pipe, at least two the water supply pipe is through foretell connecting piece intercommunication.
Preferably, the outer diameter of the first end of the pressing tube portion is larger than the inner diameter of the water supply pipeline.
Preferably, the water supply pipeline comprises a second metal pipe and a second plastic pipe arranged on the periphery of the second metal pipe, and the outer wall surface of the second plastic pipe is in hot-melt connection with the inner wall surface of the second plastic pipe part of the first plastic pipe.
The utility model provides an among the technical scheme, water supply pipe's connecting piece includes the joint portion that is used for being connected with water supply pipe, and the joint portion includes: the first metal pipe comprises a first metal pipe part, a second metal pipe part arranged at the end part of the first metal pipe part and a compression pipe part, wherein the first end of the compression pipe part is connected with the first metal pipe part, the second end of the compression pipe part is connected with the second metal pipe part, and the cross section of the compression pipe part is gradually reduced along the direction from the first end to the second end; the first plastic pipe is arranged on the periphery of the first metal pipe and comprises a first plastic pipe part and a second plastic pipe part connected with the end part of the first plastic pipe part, and the inner wall surface of the first plastic pipe part is connected with the outer wall surface of the first metal pipe part; a gap is formed between the inner wall surface of the second plastic pipe part and the outer wall surface of the second metal pipe part, an annular groove used for inserting the end part of the water supply pipeline is formed by the compression pipe part, the second metal pipe part and the second plastic pipe part in a surrounding mode, and the outer wall surface of the compression pipe part can be tightly abutted to the water supply pipeline inserted into the annular groove. Due to the arrangement, the outer wall surface of the pressing pipe layer is tightly abutted to the water supply pipeline, even if a gap exists between the first metal pipe of the connecting piece and the water supply pipeline, water flowing through the connecting piece is cut off at the pressing pipe part, and the water is prevented from flowing to other positions in the annular groove through the pressing pipe part, namely, the second metal pipe of the water supply pipeline and the first metal pipe of the connecting piece completely seal the water, so that the water is prevented from contacting the plastic pipe, the quality and the purity of the water are not influenced, and the hot melting quality of the plastic pipe is not influenced; the sealing performance of the water supply system is improved, the water pressure resistance of the water supply system is improved, and the corresponding economic loss is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a connecting member in an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is a schematic structural view of a first metal tube and a second metal tube in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a water supply system in an embodiment of the present invention.
In FIGS. 1-4:
1-joint part, 2-first plastic pipe, 201-first plastic pipe part, 202-second plastic pipe part, 3-first metal pipe, 301-first metal pipe part, 302-compaction pipe part, 303-second metal pipe part, 4-annular groove, 5-adhesive, 6-water supply pipeline, 61-second metal pipe and 62-second plastic pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The objective of the present embodiment is to provide a connecting member for water supply pipeline, which has the problems of poor sealing performance, poor anti-water pressure capability, easy economic loss, influence on water quality and purity, and influence on the quality of hot melt of plastic pipes in the prior art.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.
Referring to fig. 1 and 3, in the present embodiment, the connection member of the water supply pipeline includes a joint part 1, the joint part 1 is for connecting with the water supply pipeline 6, the joint part 1 includes a first metal pipe 3 and a first plastic pipe 2, and the first metal pipe 3 is for inhibiting the growth of bacteria. Wherein, first tubular metal resonator 3 includes first tubular metal resonator 301, second tubular metal resonator 303 and compresses tightly tub portion 302, and second tubular metal resonator 303 all sets up the tip at first tubular metal resonator 301 with compressing tightly tub portion 302, and the first end that compresses tightly tub portion 302 is connected first tubular metal resonator 301, second tubular metal resonator 303 is connected to the second end, and along the direction of first end to second end, compresses tightly the cross section of tub portion 302 and reduces gradually, so first tubular metal resonator 301's cross section is greater than the cross section of second tubular metal resonator 303. Specifically, the cross section of the compression tube portion 302 may be set to decrease uniformly in the direction from the first end to the second end, with the outer side of the section of the outer wall of the compression tube portion 302 along the central axis being a straight inclined side, as shown in fig. 2; along the direction of first end to second end, the cross section that compresses tightly pipe portion 302 also can be for reducing unevenly, and the outside limit that the cross-section of the outer wall that compresses tightly pipe portion 302 this moment along the center pin is the arc limit, and the arc limit can be for compressing tightly the arc limit that pipe portion 302 concave into or the arc limit that the protrusion came. First plastic tubing 2 sets up in the periphery of first tubular metal resonator 3, and first plastic tubing 2 includes first plastics pipe portion 201 and second plastics pipe portion 202, and second plastics pipe portion 202 is connected with the tip of first plastics pipe portion 201, and the internal face of first plastics pipe portion 201 is connected with the outer wall of first tubular metal resonator 301. Be equipped with the clearance between the internal wall face of second plastic pipe portion 202 and the outer wall face of second metal pipe portion 303, and compress tightly pipe portion 302, enclose into annular groove 4 between second metal pipe portion 303 and the second plastic pipe portion 202 jointly, annular groove 4 is used for supplying water pipe 6's tip to insert, and the outer wall face that compresses tightly pipe portion 302 can offset tightly with the water supply pipe 6 that inserts annular groove 4, and the external diameter that compresses tightly the first end of pipe portion 302 this moment can be more than or equal to the internal diameter of water supply pipe 6. Preferably, in the present embodiment, the outer diameter of the first end of the pressing pipe portion 302 is larger than the inner diameter of the water supply pipe 6. When the outer diameter of the first end of the pressing pipe portion 302 is larger than the inner diameter of the water supply pipeline 6, the end of the water supply pipeline 6 can be pressed against the outer wall surface of the pressing pipe portion 302, and a certain distance is reserved between the end of the water supply pipeline 6 and the first end of the pressing pipe portion 302; when the outer diameter of the first end of the pressing tube portion 302 is equal to the inner diameter of the water supply pipe 6, the end of the water supply pipe 6 can be just pressed against the first end of the pressing tube portion 302.
Due to the arrangement, the outer wall surface of the pressing pipe layer is tightly abutted to the water supply pipeline 6, even if a gap exists between the first metal pipe 3 of the connecting piece and the water supply pipeline 6, water flowing through the connecting piece is separated at the pressing pipe part 302, and the water is prevented from flowing to other positions in the annular groove 4 through the pressing pipe part 302, namely the second metal pipe 61 of the water supply pipeline 6 and the first metal pipe 3 of the connecting piece completely seal the water, so that the water is prevented from contacting with the plastic pipe, the quality and the purity of the water are not influenced, and the hot melting quality of the plastic pipe is not influenced; the sealing performance of the water supply system is improved, the water pressure resistance of the water supply system is improved, and the corresponding economic loss is avoided.
Alternatively, as shown in fig. 2, the angle a between the tangent line at any position on the outer wall surface of the pressing pipe portion 302 and the central axis is the same, that is, the section of the pressing pipe portion 302 along the central axis is a straight slope, which corresponds to the direction from the first end to the second end, the pressing pipe portion 302 is a cone, and the cross section of the pressing pipe portion 302 is uniformly reduced. Preferably, in this embodiment, the included angle a ranges from 30 to 60 degrees.
So set up, compare in the outer side limit in the cross-section of compressing tightly pipe portion 302 along the center pin the outer wall for the condition on arc limit, no matter when adopting this mode the tip of water supply pipe 6 is located the optional position that compresses tightly pipe portion 302 outer wall, and the pressure value that compresses tightly pipe portion 302 and receives is the same all, and the pressure value is unchangeable, compresses tightly invariable and great of the tight power of support between pipe portion 302 and the water supply pipe 6 anyway, has guaranteed sealed stability.
In an alternative embodiment, there are at least two joint portions 1, and each joint portion 1 is connected to the other joint portion 1, and each joint portion 1 is connected to the end of the water supply pipeline 6, so that the water supply pipelines 6 connected to the joint portions 1 are also connected to each other. When the number of the joint parts 1 is two, the connecting piece can be a straight-through structure or an elbow structure and the like; when the joint portions 1 are three, the connecting member may have a three-way structure or the like.
So set up, through a plurality of joint portions 1, guaranteed the intercommunication between at least two water supply pipe 6, guarantee delivery and the transportation of water among the water supply system.
Alternatively, the first metal pipe portion 301, the second metal pipe portion 303, and the pressing pipe portion 302 are integrally formed, and the first plastic pipe portion 201 and the second plastic pipe portion 202 are integrally formed. Preferably, in this embodiment, the three parts of the first metal pipe portion 301, the second metal pipe portion 303, and the compression pipe portion 302 are formed by casting, and the three parts of the first plastic pipe portion 201 and the second plastic pipe portion 202 are formed by injection molding.
So set up, the junction of whole connecting piece melts as an organic whole, has improved the compressive strength of whole connecting piece, simple to operate, and the use is got up firmly, safety.
As an alternative embodiment, the outer wall surface of the first metal pipe portion 301 and the inner wall surface of the first plastic pipe portion 201 are connected by an adhesive 5. In other embodiments, the outer wall surface of the first metal pipe portion 301 and the inner wall surface of the first plastic pipe portion 201 may be connected by mechanical connection.
So set up, first tubular metal resonator 301 is connected with first plastic pipe portion 201, realizes the relatively fixed of first tubular metal resonator 3 and first plastic tubing 2, avoids first plastic tubing 2 to drop from first tubular metal resonator 3's periphery, avoids producing great gap between first tubular metal resonator 3 and the first plastic tubing 2 simultaneously.
In a preferred embodiment, the first plastic tube 2 is made of tripropylene polypropylene, which is PPR, and the first metal tube 3 is made of stainless steel. In a preferred embodiment, the first metal tube 3 is made of TP2 copper tube and 304 stainless steel.
The present connecting member for a water supply pipe 6 is specifically described in connection with each of the above embodiments, in this embodiment, the connecting member includes at least two joint portions 1 for connecting with the water supply pipe 6, each joint portion 1 is communicated with each other, and the joint portion 1 includes: the first metal pipe 3 comprises a first metal pipe part 301, a second metal pipe part 303 arranged at the end part of the first metal pipe part 301 and a compression pipe part 302, wherein the first end of the compression pipe part 302 is connected with the first metal pipe part 301, the second end of the compression pipe part 302 is connected with the second metal pipe part 303, the cross section of the compression pipe part 302 is gradually reduced along the direction from the first end to the second end, the included angle a between the tangent line of any position of the outer wall of the compression pipe part 302 and the central axis is the same, and the included angle a is 30-60 degrees; the first plastic pipe 2 is arranged on the periphery of the first metal pipe 3, the first plastic pipe 2 comprises a first plastic pipe part 201 and a second plastic pipe part 202 connected with the end part of the first plastic pipe part 201, and the inner wall surface of the first plastic pipe part 201 is connected with the outer wall surface of the first metal pipe part 301 through an adhesive 5; a gap is formed between the inner wall surface of the second plastic pipe portion 202 and the outer wall surface of the second metal pipe portion 303, an annular groove 4 for inserting the end of the water supply pipeline 6 is defined by the compression pipe portion 302, the second metal pipe portion 303 and the second plastic pipe portion 202, and the outer wall surface of the compression pipe portion 302 can abut against the water supply pipeline 6 inserted into the annular groove 4. The first metal pipe part 301, the second metal pipe part 303 and the compression pipe part 302 are integrally formed, and the first plastic pipe part 201 and the second plastic pipe part 202 are integrally formed; the first plastic pipe 2 is made of tripropylene polypropylene, and the first metal pipe 3 is made of TP2 copper tube and 304 stainless steel.
So set up, the connecting piece makes water supply system's leakproofness become good, the water pressure resistance ability improves, avoid producing economic loss, has improved the quality and the purity of water, has improved the hot melt quality of plastic tubing.
The utility model also provides a water supply system, as shown in FIG. 4, including the connecting piece of water supply pipe, this connecting piece is the connecting piece in the above-mentioned embodiment, and water supply system still includes two at least water supply pipe 6, and two at least water supply pipe 6 are linked together through foretell connecting piece. By the arrangement, the connecting piece of the water supply system improves the sealing property, improves the water pressure resistance and avoids generating corresponding economic loss; and the connecting piece and the water supply pipeline 6 completely seal water, so that the contact between the water and the plastic pipe is avoided, the chemical reaction is avoided, the quality and the purity of the water are improved, and the hot melting quality of the plastic pipe is improved. The derivation process of the beneficial effect is substantially similar to that of the beneficial effect brought by the connecting piece, and therefore, the description is omitted here.
In an alternative embodiment, the outer diameter of the first end of the pinched tube portion 302 is larger than the inner diameter of the water supply pipe 6.
So set up, the tip of water supply pipe 6 supports the position between the first end and the second end on compressing tightly the pipe portion 302 outer wall, makes and compresses tightly pipe portion 302 and water supply pipe 6 and support tightly each other between the two, if the tip of water supply pipe 6 supports the position of compressing tightly the first end of pipe portion 302, the tip of water supply pipe 6 can fall in the bottom of annular groove 4, contact with first plastic tubing 2 promptly, the tip of water supply pipe 6 and the support tight power between compressing tightly the pipe portion 302 than less like this, the leakproofness can be relatively poor. The outer diameter of the first end is larger than the inner diameter of the water supply pipe 6, so that the situation that water flows out from the pressing pipe portion 302 due to insufficient abutting force can be avoided.
In the preferred embodiment, the water supply pipeline 6 includes a second metal pipe 61 and a second plastic pipe 62 disposed on the outer periphery of the second metal pipe 61, and the outer wall surface of the second plastic pipe 62 is thermally fused to the inner wall surface of the second plastic pipe portion 202 of the first plastic pipe 2.
So set up, for the mode that one inserts another inside in water supply pipe 6 and the connecting piece among the prior art completely, make the hot melt area increase between the first plastic tubing 2 of connecting piece and the second plastic tubing 62 of water supply pipe 6 like this, improved the hot melt quality, be favorable to water supply system's installation quality and safety in utilization.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The utility model provides a plurality of schemes contain the basic scheme of itself, mutual independence to restrict each other, but it also can combine each other under the condition of not conflicting, reaches a plurality of effects and realizes jointly.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A connection piece of a water supply pipe, comprising a joint part (1) for connection with a water supply pipe (6), characterized in that the joint part (1) comprises:
the first metal pipe (3) comprises a first metal pipe part (301), a second metal pipe part (303) arranged at the end part of the first metal pipe part (301) and a compression pipe part (302), wherein the first end of the compression pipe part (302) is connected with the first metal pipe part (301), the second end of the compression pipe part is connected with the second metal pipe part (303), and the cross section of the compression pipe part (302) is gradually reduced along the direction from the first end to the second end;
the first plastic pipe (2) is arranged on the periphery of the first metal pipe (3), the first plastic pipe (2) comprises a first plastic pipe part (201) and a second plastic pipe part (202) connected with the end part of the first plastic pipe part (201), and the inner wall surface of the first plastic pipe part (201) is connected with the outer wall surface of the first metal pipe part (301);
a gap is formed between the inner wall surface of the second plastic pipe portion (202) and the outer wall surface of the second metal pipe portion (303), an annular groove (4) used for inserting the end portion of the water supply pipeline (6) is formed by enclosing the pressing pipe portion (302), the second metal pipe portion (303) and the second plastic pipe portion (202), and the outer wall surface of the pressing pipe portion (302) can abut against the water supply pipeline (6) inserted into the annular groove (4).
2. The water supply pipe connection according to claim 1, wherein the outer wall of the pressing tube portion (302) has a tangent at any position at the same angle a with respect to the central axis.
3. A water supply pipe connection according to claim 2, wherein said angle a is 30-60 degrees.
4. The connecting member for water supply pipes according to claim 1, wherein said joint portions (1) are at least two, and each of said joint portions (1) communicates with each other.
5. The connecting member for water supply pipes according to claim 1, wherein the first metal pipe portion (301), the second metal pipe portion (303) and the pressing pipe portion (302) are integrally formed, and the first plastic pipe portion (201) and the second plastic pipe portion (202) are integrally formed.
6. The connecting member for a water supply pipeline according to claim 1, wherein the outer wall surface of the first metal pipe portion (301) and the inner wall surface of the first plastic pipe portion (201) are connected by an adhesive (5).
7. A connector for water supply pipes according to claim 1, characterized in that the first plastic tube (2) is made of tripropylene polypropylene and the first metal tube (3) is made of stainless steel.
8. A water supply system comprising at least two water supply pipes (6), characterized in that at least two of said water supply pipes (6) are connected by a connecting piece according to any of claims 1-7.
9. The water supply system according to claim 8, wherein the first end of the compacting tube portion (302) has an outer diameter larger than an inner diameter of the water supply pipe (6).
10. The water supply system according to claim 8, wherein the water supply pipeline (6) comprises a second metal pipe (61) and a second plastic pipe (62) disposed at the outer periphery of the second metal pipe (61), and the outer wall surface of the second plastic pipe (62) is in thermal fusion with the inner wall surface of the second plastic pipe portion (202) of the first plastic pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920451696.8U CN209943776U (en) | 2019-04-04 | 2019-04-04 | Connecting piece of water supply pipeline and water supply system comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920451696.8U CN209943776U (en) | 2019-04-04 | 2019-04-04 | Connecting piece of water supply pipeline and water supply system comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209943776U true CN209943776U (en) | 2020-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920451696.8U Active CN209943776U (en) | 2019-04-04 | 2019-04-04 | Connecting piece of water supply pipeline and water supply system comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209943776U (en) |
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2019
- 2019-04-04 CN CN201920451696.8U patent/CN209943776U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20210409 Address after: 065000 room 1304, unit 1, building 10, Zhuyuan, peacock new town, Gu'an County, Langfang City, Hebei Province Patentee after: Li Juan Patentee after: Sun Hongbo Address before: Room 203, South Building, No. 1 Xingqiao Street, Qiaozi Town, Huairou District, Beijing 101400 Patentee before: Kailaifei (Beijing) Technology Co.,Ltd. |
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Effective date of registration: 20210521 Address after: 102200 No.4, Taihu Road, Shisanling Town, Changping District, Beijing Patentee after: Beijing World Expo Construction Engineering Co.,Ltd. Address before: 065000 room 1304, unit 1, building 10, Zhuyuan, peacock new town, Gu'an County, Langfang City, Hebei Province Patentee before: Li Juan Patentee before: Sun Hongbo |