CN213439196U - Pipeline connecting device for building heating and ventilation construction - Google Patents

Pipeline connecting device for building heating and ventilation construction Download PDF

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Publication number
CN213439196U
CN213439196U CN202021625443.7U CN202021625443U CN213439196U CN 213439196 U CN213439196 U CN 213439196U CN 202021625443 U CN202021625443 U CN 202021625443U CN 213439196 U CN213439196 U CN 213439196U
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sets
pipe
positioning bolts
connecting device
flange
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钟泽宇
李保坚
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Henan Yanlong Engineering Technology Co ltd
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Individual
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Abstract

The utility model discloses a pipeline connecting device is used in warm logical construction of building, including pipe, three first fixing bolt of group and three fixation nut of group, the inside lateral wall of pipe is provided with the anticorrosive coating. Has the advantages that: the utility model discloses a stand pipe, when building warm logical construction is with pipe connection device connecting tube, the flange can be installed to the also corresponding meeting of connected pipeline one end, the lateral wall of flange is provided with the mounting hole, move the inside that pipeline one end inserted a set of stand pipe with the flange, the flange can support the one end removal of two sets of first positioning bolts this moment, when the one end and a set of rubber pad contact of flange, rotatory pipe, when the mounting hole of flange is removed to the one end of two sets of first positioning bolts, two sets of expanding spring support the one end of two sets of first positioning bolts and run through two sets of mounting holes, through nut fixed connection, the stand pipe of setting, be convenient for counterpoint connecting tube, avoid because of connecting tube self is heavier and the outer wall is smooth, inconvenient rotatory counterpoint it.

Description

Pipeline connecting device for building heating and ventilation construction
Technical Field
The utility model relates to a pipe connection technical field particularly, relates to a pipe connection device is used in warm logical construction of building.
Background
Warm logical is a component part of building, including heating, ventilation and air conditioning three aspect, when carrying out warm logical construction, the pipe connection is essential operation link, for making things convenient for the pipe connection, uses the building to warm to lead to the construction now more and connects the use to warm logical pipeline with pipe connection device, and in-service use has advantages such as easy operation, stability are strong and security performance height.
The existing pipeline connecting device for building heating and ventilation construction is characterized in that when a connecting pipeline is used, a contraposition structure is mostly not provided, the pipeline is heavier, contraposition connection operation is inconvenient, inconvenience is brought to connection and use of the pipeline connecting device for building heating and ventilation construction, secondly, the use environment of the pipeline connecting device for building heating and ventilation construction is complex and various, a mounting surface can not be fixed at various angles, the mounting angle of the pipeline connecting device for building heating and ventilation construction can not be adjusted according to the change of the inclination angle of the mounting surface, and inconvenience is brought to the mounting work of the pipeline connecting device for building heating and ventilation construction.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a not enough to prior art, the utility model provides a building is warm leads to pipe connection device for construction possesses the advantage of being convenient for counterpoint connecting tube, can adjust the installation angle of mount pad according to the inclination change of installation face, and then solves the problem among the above-mentioned background art.
(II) technical scheme
For realize above-mentioned be convenient for counterpoint connecting tube, can adjust the installation angle's of mount pad advantage according to the inclination change of installation face, the utility model discloses a concrete technical scheme as follows:
a pipeline connecting device for building heating and ventilation construction comprises a guide pipe, three groups of first fixing bolts and three groups of fixing nuts, wherein an anticorrosive layer is arranged on the inner side wall of the guide pipe, four groups of connecting blocks are sleeved on the outer side wall of the guide pipe, fixing plates are fixedly arranged on the side walls of bayonet positions of the four groups of connecting blocks, eight groups of fixing plates are fixedly connected with the first fixing bolts and the three groups of fixing nuts respectively through the three groups of fixing bolts, an exhaust pipe, a temperature display disc and an adjusting plate are arranged on the side wall of the guide pipe, a valve is arranged on the side wall of the exhaust pipe, one end of the exhaust pipe and one end of the temperature display disc penetrate through the side wall of the guide pipe and the side wall of the anticorrosive layer, a mounting seat is arranged at the lower part of the adjusting plate, connectors are arranged at two ends of the guide, and the outer side walls of the two groups of flange plates are sleeved with guide pipes.
Further, it is a set of the opposite side of ring flange is provided with two sets of fixing hole, and is two sets of fixing hole's internally mounted has expanding spring, and is two sets of expanding spring's inside all runs through to install first positioning bolt, and is two sets of expanding spring's one end respectively with two sets of first positioning bolt fixed connection, it is two sets of expanding spring's the other end respectively with two sets of fixing hole's other end fixed connection, it is two sets of a set of rubber pad is all run through to the one end of first positioning bolt.
Furthermore, the two groups of flange plates have the same structure, and the mounting structures of the two groups of flange plates are also the same.
Furthermore, the two groups of telescopic springs are in a stretching state.
Further, the lower part of regulating plate is provided with the ball socket, and the inside slidable mounting of ball socket has the bulb to the lateral wall fixed mounting of bulb has the telescopic link, the lateral wall of telescopic link is provided with four group's screw thread blind holes, the one end lateral wall of telescopic link cup joints and installs the regulating tube, and the lateral wall of regulating tube is provided with second screw thread through-hole, and the internally mounted of second screw thread through-hole has third positioning bolt, the one end of third positioning bolt is located a set of the inside of screw thread blind hole, the both sides of regulating plate all are provided with first screw thread through-hole, and two sets of the inside of first screw thread through-hole all runs through and installs second positioning bolt, and two sets of the one end of second positioning bolt contacts with the lateral wall.
Furthermore, the two groups of first threaded through holes are respectively meshed with the two groups of second positioning bolts, and the third positioning bolts are respectively meshed with the four groups of threaded blind holes and the second threaded through holes.
Further, the cross-sectional length of the opening of the ball socket is smaller than the maximum cross-sectional length of the ball head.
Furthermore, a mounting seat is installed at one end of the adjusting pipe, and eight groups of second fixing bolts are installed on the upper portion of the mounting seat in a penetrating mode.
(III) advantageous effects
Compared with the prior art, the utility model provides a building heating and ventilating construction is with pipe connection device possesses following beneficial effect:
(1) the utility model adopts the guide pipe, when the pipeline connecting device for building heating and ventilation construction is used for connecting pipelines, one end of the connected pipeline is correspondingly provided with a flange, the side wall of the flange is provided with a mounting hole, one end of the moving pipeline inserts the flange into the inside of a group of guide pipes, at the moment, the flange can support one end of two groups of first positioning bolts to move, in the process, two groups of expansion springs are in a stretching state, when one end of the flange is contacted with a group of rubber pads, the rotating conduit drives a group of connecting heads, a group of guide pipes and a group of flange plates to do synchronous motion, when one end of the two groups of first positioning bolts is moved to the mounting hole of the flange, the two groups of expansion springs are subjected to the self elastic force, the end of the two groups of first positioning bolts is supported to penetrate through the two groups of mounting holes, the other group of connecting, be convenient for counterpoint connecting tube, avoid inconvenient rotatory counterpoint to it because of connecting tube self is heavier and the outer wall is smooth, for the construction warms up to lead to the construction and uses the connection of using with pipe connection device and bring the facility.
(2) The utility model adopts the adjusting plate, when the inclination angle of the installation surface is changed, two groups of first thread through holes are respectively meshed with two groups of second positioning bolts, the two groups of second positioning bolts are rotated anticlockwise, when one ends of the two groups of second positioning bolts are respectively separated from the ball head, the ball head is rotated to drive the telescopic rod, the adjusting pipe and the installation seat to do synchronous motion, when the inclination angle of the installation seat and the installation surface is the same, the two groups of second positioning bolts are rotated clockwise, when one ends of the two groups of second positioning bolts are respectively contacted with the ball head, the motion is stopped, when the pipeline connecting device for building heating and ventilation construction is far away from the installation surface, the third positioning bolt is respectively meshed with the four groups of thread blind holes and the second thread through holes, the third positioning bolt is rotated anticlockwise, when one end of the third positioning bolt is separated from one group of thread blind holes, the adjusting pipe is moved to drive the mounting seat to move synchronously, when the mounting seat reaches an expected position, the third positioning bolt rotates clockwise, when one end of the third positioning bolt enters the inside of the set of threaded blind holes, the third positioning bolt stops moving, the mounting angle of the mounting seat can be adjusted according to the change of the inclination angle of the mounting surface through the adjusting plate arranged, and the mounting work of the pipeline connecting device for building heating and ventilation construction is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 view of a pipe connection device for building heating and ventilation construction provided by the utility model;
FIG. 2 is a schematic structural view of the guide tube of the present invention;
FIG. 3 is an enlarged view of A of FIG. 1 according to the present invention;
fig. 4 is an enlarged view of B in fig. 1 according to the present invention.
In the figure:
1. a conduit; 2. an anticorrosive layer; 3. connecting blocks; 4. a fixing plate; 5. a first fixing bolt; 6. fixing a nut; 7. an exhaust pipe; 8. a temperature display panel; 9. a valve; 10. a connector; 11. a flange plate; 12. a guide tube; 13. a rubber pad; 14. a fixing through hole; 15. a tension spring; 16. a first positioning bolt; 17. an adjusting plate; 18. a ball socket; 19. a ball head; 20. a first threaded through hole; 21. a second positioning bolt; 22. a telescopic rod; 23. an adjusting tube; 24. a threaded blind hole; 25. a second threaded through hole; 26. a third positioning bolt; 27. a mounting seat; 28. and a second fixing bolt.
Detailed Description
For further explanation of the embodiments, the drawings are provided as part of the disclosure and serve primarily to illustrate the embodiments and, together with the description, to explain the principles of operation of the embodiments, and to provide further explanation of the invention and advantages thereof, it will be understood by those skilled in the art that various other embodiments and advantages of the invention are possible, and that elements in the drawings are not to scale and that like reference numerals are generally used to designate like elements.
According to the utility model discloses an embodiment provides a building is warm to be led to pipe connection device for construction.
Referring to the drawings and the detailed description, as shown in fig. 1-4, the pipe connection device for building heating and ventilation construction according to the embodiment of the present invention comprises a pipe 1, three sets of first fixing bolts 5 and three sets of fixing nuts 6, wherein the inner side wall of the pipe 1 is provided with an anti-corrosion layer 2, the outer side wall of the pipe 1 is sleeved with four sets of connecting blocks 3, the side walls of the bayonet parts of the four sets of connecting blocks 3 are fixedly provided with fixing plates 4, the eight sets of fixing plates 4 are fixedly connected with the three sets of first fixing bolts 5 and the three sets of fixing nuts 6 respectively, the side wall of the pipe 1 is provided with an exhaust pipe 7, a temperature display plate 8 and an adjusting plate 17, the side wall of the exhaust pipe 7 is provided with a valve 9, one end of the exhaust pipe 7 and the temperature display plate 8 penetrates through the side wall of the pipe 1 and the side wall of the anti, connector 10 is all installed at pipe 1's both ends, and ring flange 11 is all installed to the opening part of two sets of connectors 10, and rubber pad 13 is all installed to one side of two sets of ring flanges 11, and the outside lateral wall of two sets of ring flanges 11 all cup joints and installs stand pipe 12, and pipe 1, anticorrosive coating 2, four group's connecting blocks 3, three first fixing bolt 5 of group, three fixing nut 6 of group, blast pipe 7, temperature display dish 8 and valve 9 are current structure, do not do too much to describe here.
In one embodiment, two sets of fixing through holes 14 are formed on the other side of one set of flange plate 11, and the two sets of fixing through holes 14 are internally provided with telescopic springs 15, the two sets of telescopic springs 15 are internally provided with first positioning bolts 16, one ends of the two sets of telescopic springs 15 are respectively fixedly connected with the two sets of first positioning bolts 16, the other ends of the two sets of telescopic springs 15 are respectively fixedly connected with the other ends of the two sets of fixing through holes 14, one ends of the two sets of first positioning bolts 16 are respectively penetrated through one set of rubber pads 13, when the pipeline connecting device for building heating and ventilating construction is connected with a pipeline, a flange is correspondingly arranged at one end of the connected pipeline, the side wall of the flange is provided with a mounting hole, one end of the moving pipeline is inserted into one set of guide pipes 12, the flange can move against one end of the two sets of first positioning bolts 16, and in, when the one end of flange and the contact of a set of rubber pad 13, rotatory pipe 1 drives a set of connector 10, synchronous motion is to a set of stand pipe 12 and a set of ring flange 11, when the mounting hole of flange is removed to the one end with two sets of first positioning bolts 16, two sets of expanding spring 15 receive self spring action, the one end that supports two sets of first positioning bolts 16 runs through two sets of mounting holes, through nut fixed connection, another set of connector 10 can with the operation, through the stand pipe 12 that sets up, be convenient for counterpoint the connecting tube, avoid because of connecting tube self is heavier and the outer wall is smooth, inconvenient rotatory counterpoint to it, it brings the facility to warm the connection of leading to construction with pipe connection device for the building.
In one embodiment, the two sets of flanges 11 have the same structure, and the two sets of flanges 11 have the same mounting structure, so as to avoid that the two sets of flanges 11 can not perform the same function in the same operation due to the different structures of the two sets of flanges 11.
In one embodiment, the two sets of extension springs 15 are under tension to abut against the junction of the two sets of first positioning bolts 16 through the connecting tubing.
In one embodiment, a ball socket 18 is arranged at the lower part of an adjusting plate 17, a ball head 19 is slidably mounted inside the ball socket 18, a telescopic rod 22 is fixedly mounted on the side wall of the ball head 19, four sets of threaded blind holes 24 are arranged on the side wall of the telescopic rod 22, an adjusting pipe 23 is sleeved on the side wall of one end of the telescopic rod 22, a second threaded through hole 25 is arranged on the side wall of the adjusting pipe 23, a third positioning bolt 26 is mounted inside the second threaded through hole 25, one end of the third positioning bolt 26 is located inside one set of threaded blind holes 24, first threaded through holes 20 are arranged on both sides of the adjusting plate 17, second positioning bolts 21 are mounted inside two sets of first threaded through holes 20 in a penetrating manner, one ends of two sets of second positioning bolts 21 are respectively contacted with the side wall of the ball head 19, when the inclination angle of the mounting surface is changed, the two sets of first threaded through holes 20 are, rotating two sets of second positioning bolts 21 counterclockwise, when one end of each set of second positioning bolts 21 is separated from the ball 19, rotating the ball 19 to drive the telescopic rod 22, the adjusting pipe 23 and the mounting seat 27 to do synchronous motion, when the mounting seat 27 has the same inclination angle with the mounting surface, rotating two sets of second positioning bolts 21 clockwise, when one end of each set of second positioning bolts 21 is contacted with the ball 19, stopping the motion, when the pipeline connecting device for building heating and ventilating construction is far away from the mounting surface, utilizing the third positioning bolts 26 to be respectively meshed with the four sets of threaded blind holes 24 and the second threaded through holes 25, rotating the third positioning bolts 26 counterclockwise, when one end of the third positioning bolts 26 is separated from one set of threaded blind holes 24, moving the adjusting pipe 23 to drive the mounting seat 27 to do synchronous motion, and when the expected position is reached, rotating the third positioning bolts 26 clockwise, when one end of the third positioning bolt 26 enters the inside of the group of threaded blind holes 24, the movement is stopped, and the installation angle of the installation seat 27 can be adjusted according to the change of the inclination angle of the installation surface through the arranged adjusting plate 17, so that convenience is brought to the installation work of the pipeline connecting device for building heating and ventilation construction.
In one embodiment, the two sets of first threaded through holes 20 are respectively engaged with the two sets of second positioning bolts 21, and the third positioning bolts 26 are respectively engaged with the four sets of threaded blind holes 24 and the second threaded through holes 25, so that the two sets of second positioning bolts 21 and the third positioning bolts 26 can be conveniently disassembled and assembled.
In one embodiment, the cross-sectional length of the opening of the socket 18 is less than the maximum cross-sectional length of the ball head 19, so as to avoid the situation that the ball head 19 is separated from the socket 18 due to the excessive cross-sectional length of the opening of the socket 18.
In one embodiment, an installation seat 27 is installed at one end of the adjusting pipe 23, eight sets of second fixing bolts 28 are installed through the upper portion of the installation seat 27, and the eight sets of second fixing bolts 28 serve to install and fix the pipe connection device for building heating and ventilation construction.
The working principle is as follows:
when the pipeline connecting device for building heating and ventilation construction is used, firstly, the pipeline connection is considered, when the pipeline connecting device for building heating and ventilation construction is used for connecting pipelines, one end of the connected pipeline is correspondingly provided with a flange, the side wall of the flange is provided with a mounting hole, one end of the movable pipeline inserts the flange into the inside of a group of guide pipes 12, the flange can abut against one ends of two groups of first positioning bolts 16 to move, in the process, two groups of telescopic springs 15 are in a stretching state, when one end of the flange is contacted with a group of rubber pads 13, the rotary conduit 1 drives a group of connectors 10, a group of guide pipes 12 and a group of flange plates 11 to synchronously move, when one ends of the two groups of first positioning bolts 16 are moved to the mounting hole of the flange, the two groups of telescopic springs 15 are under the action of self elasticity, abut against one ends of the two groups of first positioning bolts 16, the other group of connectors 10 can be operated together, the guiding pipe 12 is arranged to facilitate the alignment of the connecting pipeline, the connecting pipeline is prevented from being inconvenient to rotate and align due to the fact that the connecting pipeline is heavy and the outer wall of the connecting pipeline is smooth, the connecting pipeline is convenient to connect and use for the pipeline connecting device for building heating and ventilation construction, meanwhile, when the inclination angle of the installation surface is changed, two groups of first threaded through holes 20 are respectively meshed with two groups of second positioning bolts 21, the two groups of second positioning bolts 21 are rotated anticlockwise, when one ends of the two groups of second positioning bolts 21 are respectively separated from the ball head 19, the ball head 19 is rotated to drive the telescopic rod 22, the adjusting pipe 23 and the installation seat 27 to move synchronously, when the inclination angle of the installation seat 27 and the installation surface is the same, the two groups of second positioning bolts 21 are rotated clockwise, when one ends of the two groups of second positioning bolts 21 are respectively, when the pipeline connecting device for building heating and ventilation construction is far away from the installation surface, the third positioning bolt 26 is respectively meshed with the four groups of threaded blind holes 24 and the second threaded through hole 25, the third positioning bolt 26 rotates anticlockwise, when one end of the third positioning bolt 26 is separated from the group of threaded blind holes 24, the adjusting pipe 23 is moved to drive the installation seat 27 to do synchronous motion, when the expected position is reached, the third positioning bolt 26 rotates clockwise, when one end of the third positioning bolt 26 enters the group of threaded blind holes 24, the movement is stopped, through the arranged adjusting plate 17, the installation angle of the installation seat 27 can be adjusted according to the change of the inclination angle of the installation surface, and convenience is brought to the installation work of the pipeline connecting device for building heating and ventilation construction.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a pipeline connecting device is used in construction that leads to in building heating, its characterized in that includes pipe (1), three first fixing bolt of group (5) and three fixation nut of group (6), the inside lateral wall of pipe (1) is provided with anticorrosive coating (2), the outside lateral wall of pipe (1) cup joints installs four connecting block of group (3), and four group bayonet socket department lateral wall of connecting block (3) equal fixed mounting have fixed plate (4), eight groups fixed plate (4) are respectively through three group first fixing bolt (5) and three group fixation nut (6) fixed connection, blast pipe (7), temperature display dish (8) and regulating plate (17) are installed to the lateral wall of pipe (1), valve (9) are installed to the lateral wall of blast pipe (7), the lateral wall of pipe (1) and the lateral wall of anticorrosive coating (2) are run through to the one end of blast pipe (7) and temperature display dish (8), mounting seat (27) are installed to the lower part of regulating plate (17), connector (10) are all installed at the both ends of pipe (1), and are two sets of ring flange (11) are all installed to the opening part of connector (10), and are two sets of rubber pad (13) are all installed to one side of ring flange (11), and are two sets of the outside lateral wall of ring flange (11) all cup joints and installs stand pipe (12).
2. The pipe connecting device for building heating and ventilation construction according to claim 1, wherein two sets of fixing through holes (14) are provided on the other side of one set of the flange (11), two sets of the fixing through holes (14) are internally provided with expansion springs (15), two sets of the expansion springs (15) are internally provided with first positioning bolts (16), one ends of two sets of the expansion springs (15) are respectively and fixedly connected with two sets of the first positioning bolts (16), the other ends of two sets of the expansion springs (15) are respectively and fixedly connected with the other ends of two sets of the fixing through holes (14), and one ends of two sets of the first positioning bolts (16) are respectively provided with one set of rubber pads (13).
3. The pipe connecting device for building heating and ventilation according to claim 2, wherein the two sets of flanges (11) have the same structure, and the two sets of flanges (11) have the same mounting structure.
4. A pipe connecting device for building heating and ventilating construction according to claim 2, wherein two sets of said expanding springs (15) are in a stretched state.
5. The pipe connecting device for building heating and ventilation construction according to claim 1, wherein a ball socket (18) is arranged at the lower part of the adjusting plate (17), a ball head (19) is slidably mounted inside the ball socket (18), a telescopic rod (22) is fixedly mounted on the side wall of the ball head (19), four groups of blind threaded holes (24) are formed in the side wall of the telescopic rod (22), an adjusting pipe (23) is mounted on the side wall of one end of the telescopic rod (22) in a sleeved mode, a second through threaded hole (25) is formed in the side wall of the adjusting pipe (23), a third positioning bolt (26) is mounted inside the second through threaded hole (25), one end of the third positioning bolt (26) is located inside one group of the blind threaded holes (24), first through threaded holes (20) are formed in both sides of the adjusting plate (17), and second positioning bolts (21) are mounted inside both groups of the first through threaded holes (20) in a penetrating mode, and one ends of the two groups of second positioning bolts (21) are respectively contacted with the side wall of the ball head (19).
6. A pipe connecting device for building heating and ventilation according to claim 5, wherein two sets of said first threaded through holes (20) are engaged with two sets of said second positioning bolts (21), respectively, and said third positioning bolts (26) are engaged with four sets of threaded blind holes (24) and second threaded through holes (25), respectively.
7. A pipe connecting device for building heating and ventilation construction according to claim 5, characterized in that the cross-sectional length of the opening of the ball socket (18) is smaller than the maximum cross-sectional length of the ball head (19).
8. The pipe connecting device for building heating and ventilating construction according to claim 5, wherein an installation seat (27) is installed at one end of the adjusting pipe (23), and eight sets of second fixing bolts (28) are installed at the upper portion of the installation seat (27) in a penetrating manner.
CN202021625443.7U 2020-08-07 2020-08-07 Pipeline connecting device for building heating and ventilation construction Active CN213439196U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021625443.7U CN213439196U (en) 2020-08-07 2020-08-07 Pipeline connecting device for building heating and ventilation construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021625443.7U CN213439196U (en) 2020-08-07 2020-08-07 Pipeline connecting device for building heating and ventilation construction

Publications (1)

Publication Number Publication Date
CN213439196U true CN213439196U (en) 2021-06-15

Family

ID=76308945

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021625443.7U Active CN213439196U (en) 2020-08-07 2020-08-07 Pipeline connecting device for building heating and ventilation construction

Country Status (1)

Country Link
CN (1) CN213439196U (en)

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Effective date of registration: 20230518

Address after: No. 148, 10th Floor, Building 1, Yuansheng International, No. 49 Jinshui East Road, Zhengzhou Pilot Free Trade Zone, Zhengzhou, Henan Province, 450000

Patentee after: Henan Yanlong Engineering Technology Co.,Ltd.

Address before: 510000 room 402, 14 Hudong street, Yuexiu District, Guangzhou City, Guangdong Province

Patentee before: Li Baojian

TR01 Transfer of patent right