CN216045850U - Air conditioner connecting pipe - Google Patents
Air conditioner connecting pipe Download PDFInfo
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- CN216045850U CN216045850U CN202122417386.4U CN202122417386U CN216045850U CN 216045850 U CN216045850 U CN 216045850U CN 202122417386 U CN202122417386 U CN 202122417386U CN 216045850 U CN216045850 U CN 216045850U
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Abstract
The utility model provides an air conditioner connecting pipe, which comprises a heat-insulating hose; the rear end of the heat-insulating hose is fixedly connected with an installation pipe A; the front end of the heat-preservation hose is fixedly connected with an installation pipe B; the mounting pipe A comprises annular grooves, protruding parts A and rear grooves, the annular grooves are fixedly connected to the rear ends of the mounting pipe A, the number of the protruding parts A is two, the protruding parts A are fixedly connected to the left end and the right end of the mounting pipe A, and the rear grooves are fixedly connected to the rear ends of the two groups of the protruding parts A; the outer curved side surface of the heat preservation hose is sleeved with a pipeline mounting rack; voussoir B pulls downwards through the balancing weight of its rear end, can make voussoir B return the vertical state, removes the back of lifting to collet arc frame, can make voussoir B bottom plane and side extension board A top surface carry on spacingly, can make collet arc frame and top arc frame carry out the auto-lock and assemble, compares with the clamp that the tradition used the bolt is fixed, through upwards lifting alright with realize the auto-lock fixed, can save the time of installing the pipeline, improved the installation effectiveness.
Description
Technical Field
The utility model belongs to the technical field of air conditioner pipelines, and particularly relates to an air conditioner connecting pipe.
Background
Before the central air conditioner is used, a long-distance ventilation hose needs to be erected, and the existing connecting pipe is inconvenient to install and connect.
As disclosed in publication No.: CN213630690U patent discloses a combined air conditioner connecting pipe, specifically relates to the technical field of air conditioner accessories, and comprises a first connecting pipe, the outer surfaces of two ends of the first connecting pipe are both provided with first thread marks, the outer surface of the first connecting pipe is provided with a connecting mechanism, the connecting mechanism comprises a connecting cylinder, the inner wall of the connecting cylinder is provided with a second thread mark, the structure of the first thread mark is matched with that of the second thread mark, the connecting cylinder is in threaded connection with the first connecting pipe through the first thread trace, and the connecting mechanism is arranged, can be according to the demand in place, increase the quantity of first connecting pipe, through the mode that sets up a connecting cylinder between two first connections, get up the required connecting pipe combination of air conditioner, easy operation is convenient, need not carry out extra processing to first connecting pipe, adapts to different places, can effectual improvement construction installation's work efficiency.
Based on the above, traditional air conditioner connecting pipe mainly is the tubular structure, generally does not set up the accessible and upwards lifts the fixed mounting structure of realization auto-lock, can not save the time of installation pipeline, and the installation effectiveness is lower, does not set up the structure that can carry out the auto-lock with the multiunit pipeline and fix, is not convenient for carry out convenient connection with the multiunit pipeline, does not set up the structure that can prevent that two sets of installation pipe juncture from producing the pipe and rocking perpendicularly.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides an air conditioner connecting pipe, which aims to solve the problems that the traditional air conditioner connecting pipe is mainly of a cylindrical structure, a mounting structure capable of realizing self-locking fixing through upward lifting is not generally arranged, the time for mounting pipelines cannot be saved, the mounting efficiency is low, a structure capable of self-locking and fixing a plurality of groups of pipelines is not arranged, the plurality of groups of pipelines are inconvenient to connect conveniently, and a structure capable of preventing the vertical shaking of the pipes at the junction of two groups of mounting pipes is not arranged.
The utility model relates to an air conditioner connecting pipe, which is achieved by the following specific technical means:
an air conditioner connecting pipe comprises a heat preservation hose;
the rear end of the heat-insulating hose is fixedly connected with an installation pipe A;
the front end of the heat-preservation hose is fixedly connected with an installation pipe B;
the mounting pipe A comprises annular grooves, protruding parts A and rear grooves, the annular grooves are fixedly connected to the rear ends of the mounting pipe A, the number of the protruding parts A is two, the protruding parts A are fixedly connected to the left end and the right end of the mounting pipe A, and the rear grooves are fixedly connected to the rear ends of the two groups of the protruding parts A;
the heat preservation hose outer curved side has cup jointed the pipeline erection frame, and the pipeline erection frame includes the top flat board, and the top flat board is located the heat preservation hose top, and the top flat board is inside to run through perpendicularly has four groups of screw holes.
Further, the installation tube a further includes:
the number of the fixed blocks is two, and the fixed blocks are fixedly connected inside the rear groove;
the side through hole transversely penetrates through the inside of the fixed block;
the slide bars, slide bar quantity set up to two groups, set up in both sides about the side through-hole through sliding connection.
Further, the installation tube a further includes:
the wedge A is fixedly connected to the tail ends of the outer sides of the two groups of slide bars;
and the return spring is fixedly connected to the inner vertical surfaces of the two groups of wedge blocks A.
Further, the installation tube B includes:
the convex ring is fixedly connected to the front end vertical surface of the mounting pipe B;
the protruding parts B are arranged in two groups in number and are fixedly connected to the left end and the right end of the installation pipe B.
Further, the installation tube B includes:
the number of the inserting pieces is two, and the inserting pieces are fixedly connected to the front end vertical surface of the protruding part B;
the bending part is fixedly connected to the left side and the right side of the front end of the inserting and fixing part;
the arc surface is fixedly connected to the front end of the bending part;
and the limiting groove is fixedly connected to the vertical surface at the rear end of the bending part.
Further, the pipe installation rack further comprises:
the top arc frame is fixedly connected to the bottom end of the top flat plate;
the side boards A are arranged into two groups, and are fixedly connected to the left end and the right end of the top arc frame;
the square hole vertically penetrates through the inside of the side-extending plate A.
Further, the pipe installation rack further comprises:
the bottom support arc frame is arranged at the bottom of the top arc frame;
the side boards B are arranged into two groups and fixedly connected to the left end and the right end of the bottom support arc frame;
the vertical frame is fixedly connected to the top surface of the side extension plate B;
the wedge block B is arranged on the inner side of the vertical frame through hinged connection;
and the balancing weight is fixedly connected to the bottom of the rear end of the wedge block B.
The utility model at least comprises the following beneficial effects:
1. by arranging the bottom support arc frame, the utility model can push the bottom support arc frame vertically upwards after the heat preservation hose is arranged at the top of the bottom support arc frame, the vertical frames on the left side and the right side of the bottom support arc frame are aligned with the square holes, and can pass through the square holes by upward lifting, the wedge block B hinged at the top of the vertical frame can be turned inwards, after the bottom support arc frame is lifted until the side extension plate B is jointed with the bottom surface of the side extension plate A, the wedge block B is pulled downwards by the balancing weight at the rear end of the wedge block B, the wedge block B can return to the vertical state, the bottom plane of the wedge block B and the top surface of the side extension plate A can be limited after the lifting of the bottom support arc frame is released, can lead the bottom support arc frame and the top arc frame to carry out self-locking assembly, compared with the traditional clamp fixing using bolts, the self-locking fixation can be realized by upward lifting, the time for installing the pipeline can be saved, and the installation efficiency is improved.
2. The utility model can improve the air tightness of the joint of two groups of pipelines by arranging the installation pipe A and matching the installation pipe B to butt the installation pipe B and the installation pipe A, the convex rings can be inserted into the annular grooves after the convex rings are aligned with the convex parts A and B on the left and right sides of the installation pipe A and the installation pipe B, when the butt joint is carried out in the horizontal direction, two groups of inserting and fixing pieces at the front ends of the convex parts B can be inserted into the back grooves, the arc-shaped surface at the front ends of the bending parts is in sliding contact with the inclined surface of the wedge block A, the bending parts can be limited at the inner sides of the side through holes during the translation of the bending parts to the front side, so that the two groups of wedge blocks A can be translated and slid to the inner sides, when the bending parts slide to the back side of the wedge block A, the front end vertical surfaces of the bending parts are in contact with the rear end vertical surfaces in the back grooves, the bending parts are separated from the inclined surfaces of the wedge blocks A and are expanded and reset by the reset springs, can make two sets of voussoir A to the outside slip, it is spacing through voussoir A rear end facade and kink front end facade, can make installation pipe A and installation pipe B realize the auto-lock fixed, be convenient for carry out convenient the connection with multiunit pipeline.
3. According to the utility model, the limiting groove is arranged, after the pipe A and the mounting pipe B are fixed in a self-locking manner, the top and the bottom of the wedge A are limited by the limiting groove at the rear end of the bending part, so that the vertical shaking of the pipes at the junction position of two groups of mounting pipes can be prevented, and the pipeline connection position can be more stable.
Drawings
Fig. 1 is a schematic perspective view of the present invention as a whole.
Fig. 2 is a schematic side sectional perspective view of the installation tube a of the present invention.
Fig. 3 is a partially enlarged view of a in fig. 2 according to the present invention.
Fig. 4 is a partially enlarged view of B in fig. 2 according to the present invention.
Fig. 5 is a schematic perspective disassembled structure view of the pipe installation frame of the present invention.
Fig. 6 is a side sectional perspective view of the wedge B of the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a heat-insulating hose;
2. installing a pipe A;
201. a ring groove; 202. a protrusion A; 2021. a rear groove; 203. a fixed block; 2031. a side through hole; 204. a slide bar; 205. a wedge A; 2051. a return spring;
3. installing a pipe B;
301. a convex ring; 302. a protrusion B; 3021. inserting a firmware; 3022. a bending section; 3023. an arc-shaped surface; 3024. a limiting groove;
4. a pipe mounting frame;
401. a top plate; 402. a top arc frame; 4021. a side board A; 4022. a square hole; 403. a bottom bracket arc frame; 4031. a side board B; 4032. a vertical frame; 404. a wedge block B; 4041. and a balancing weight.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "two ends," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the description, and are not intended to indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, and for example, they may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Example (b):
as shown in figures 1 to 6: the utility model provides an air conditioner connecting pipe, which comprises a heat-insulating hose 1; the rear end of the heat preservation hose 1 is fixedly connected with an installation pipe A2; the front end of the heat preservation hose 1 is fixedly connected with a mounting pipe B3; the mounting pipe A2 comprises ring grooves 201, protruding parts A202 and rear grooves 2021, the ring grooves 201 are fixedly connected to the rear end of the mounting pipe A2, the protruding parts A202 are arranged in two groups, the protruding parts A202 are fixedly connected to the left end and the right end of the mounting pipe A2, and the rear grooves 2021 are fixedly connected to the rear ends of the two groups of protruding parts A202; the pipe mounting rack 4 is sleeved on the outer curved side face of the heat preservation hose 1, the pipe mounting rack 4 comprises a top plate 401, the top plate 401 is located above the heat preservation hose 1, and four groups of screw holes vertically penetrate through the inside of the top plate 401.
The mounting tube a2 further includes: the fixed blocks 203 are arranged in two groups, and the fixed blocks 203 are fixedly connected inside the rear groove 2021; the side through hole 2031, the side through hole 2031 transversely penetrates through the inside of the fixing block 203; the sliding rods 204 are arranged in two groups, and are arranged on the left side and the right side of the side through hole 2031 in a sliding connection manner; a wedge A205, wherein the wedge A205 is fixedly connected at the outer ends of the two sets of slide bars 204; and the return spring 2051 are fixedly connected to opposite inner vertical surfaces of the two groups of wedges A205.
As shown in fig. 2, the mounting tube B3 includes: the convex ring 301 is fixedly connected to the front end vertical surface of the mounting pipe B3; the number of the protruding parts B302 is two, and the protruding parts B302 are fixedly connected to the left end and the right end of the installation pipe B3; the number of the inserting and fixing pieces 3021 is two, and the inserting and fixing pieces 3021 are fixedly connected to the front end vertical surface of the protruding part B302; a bending part 3022, the bending part 3022 is fixedly connected to the left and right sides of the front end of the plug 3021; the arc face 3023, the arc face 3023 is fixedly connected to the front end of the bending portion 3022; a limit groove 3024, the limit groove 3024 is fixedly connected to the vertical surface of the rear end of the bending portion 3022, after the mounting tube B3 is butted with the mounting tube A2, the convex ring 301 can be inserted into the annular groove 201, so that the air tightness of the joint between the two sets of pipes can be improved, after the mounting tube A2 and the protruding portion a202 and the protruding portion B302 on the left and right sides of the mounting tube B3 are aligned, when the joint is performed in the horizontal direction, the two sets of insertion members 3021 at the front end of the protruding portion B302 can be inserted into the rear groove 2021, the arc-shaped surface 3023 at the front end of the bending portion 3022 is in sliding contact with the inclined surface of the wedge a205, so that the front end of the bending portion 3022 is limited by the slide bar 204 inside the side through hole 2031 during the translation toward the front side of the bending portion 3022, the two sets of the wedge a205 can be moved in a translation manner inward, when the bending portion 3022 is moved to the rear side of the wedge a205, the front end of the bending portion 3022 is in contact with the vertical surface of the rear end of the rear groove 2021, and the bending portion 3022 is separated from the inclined surface of the wedge a205, through reset spring 2051 expansion, can make two sets of voussoir A205 slide to the outside, it is spacing with kink 3022 front end facade through voussoir A205 rear end facade, can make installation pipe A2 and installation pipe B3 realize the auto-lock fixed, spacing groove 3024 through kink 3022 rear end is spacing to voussoir A205 top and bottom, can prevent that two sets of installations from producing the pipe and rock perpendicularly, can make the pipe connection department more stable.
As shown in fig. 5, the pipe installation rack 4 further includes: the top arc frame 402 is fixedly connected to the bottom end of the top flat plate 401; the number of the side boards A4021 is two, and the side boards A4021 are fixedly connected to the left end and the right end of the top arc frame 402; the square hole 4022, the square hole 4022 vertically penetrates through the side board A4021; the pipe mounting frame 4 further comprises: a bottom arc support 403, wherein the bottom arc support 403 is arranged at the bottom of the top arc support 402; the side panels B4031, the number of the side panels B4031 is two, and they are fixedly connected to the left and right ends of the bottom arc frame 403; a vertical frame 4032, wherein the vertical frame 4032 is fixedly connected to the top surface of the side supporting plate B4031; a wedge B404, wherein the wedge B404 is arranged on the inner side of the vertical frame 4032 through hinge connection; the balancing weight 4041, the balancing weight 4041 is fixedly connected to the bottom of the rear end of the wedge B404, the top plate 401 can be installed on the top wall body by screws through screw holes inside the top plate 401, the heat preservation hose 1 is placed on the top of the bottom arc stand 403, the wedge B404 hinged to the top of the vertical stand 4032 can be turned inside by vertically pushing the bottom arc stand 403 upwards, the vertical stand 4032 on the left side and the right side of the bottom arc stand 403 is aligned with the square hole 4022, the vertical stand 4032 can pass through the square hole 4022 by upward lifting, the wedge B404 hinged to the top of the vertical stand 4032 can be turned inside by lifting the bottom arc stand 403 until the side plate B4031 is attached to the bottom of the side plate a4021, the wedge B404 is pulled downwards through the balancing weight 4041 at the rear end of the wedge B404, the bottom plane of the wedge B404 can be limited with the top surface of the side plate a4021 after lifting of the bottom arc stand 403 is released, the bottom plane of the wedge B404 can be self-locked with the top arc stand 402, compare with the clamp that the tradition used the bolt is fixed, through upwards lifting alright realize that the auto-lock is fixed, can save the time of installation pipeline, improved work efficiency.
The specific use mode and function of the embodiment are as follows:
in the utility model, when in use, screws penetrate into screw holes in the top plate 401 from the bottom, the top plate 401 is fixed on a top wall, the heat preservation hose 1 is placed on the top of the bottom bracket arc frame 403, the bottom bracket arc frame 403 is vertically pushed upwards, the vertical frames 4032 on the left side and the right side of the bottom bracket arc frame 403 are aligned with the square holes 4022, the vertical frame 4032 can penetrate through the square holes 4022 by upward lifting, the wedge block B404 hinged to the top of the vertical frame 4032 can be turned inwards, the bottom plane of the wedge block B404 can be limited with the top surface of the side plate A4021 by lifting the bottom bracket arc frame 403 until the bottom surfaces of the side plate B4031 and the side plate A4021 are attached, the wedge block B404 is pulled downwards by the balancing weight 4041 on the rear end of the wedge block B404, the wedge block B404 can be returned to the vertical state after the lifting of the bottom bracket arc frame 403 is released, the bottom plane of the wedge block B404 can be limited with the top surface of the side plate A4021, the bottom bracket arc frame 403 can be self-locked with the top bracket arc frame 402, and a plurality of groups of heat preservation hoses 1 can be assembled, when the mounting tube A2 of the adjacent thermal insulation hose 1 and the projecting parts A202 and B302 at the left and right sides of the mounting tube B3 at the rear end of the other thermal insulation hose 1 are aligned and butted in the horizontal direction, two sets of insertion parts 3021 at the front end of the projecting part B302 can be inserted into the rear groove 2021, the arc-shaped surface 3023 at the front end of the bending part 3022 is in sliding contact with the inclined surface of the wedge A205, the bending part 3022 can be limited in the inner side of the side through hole 2031 in the process of translating to the front side by the slide bar 204, two sets of wedge A205 can be translated and slid to the inner side, when the bending part 3022 is slid to the rear side of the wedge A205, the front end vertical surface of the bending part 3022 is in contact with the rear end vertical surface of the inner part 2021, the bending part 3022 is out of contact with the inclined surface of the wedge A205, the restoring spring 2051 is expanded, and restored, the two sets of wedge A205 can be slid to the outer side, the installation pipe A2 and the installation pipe B3 can realize self-locking fixation.
The utility model is not described in detail, but is well known to those skilled in the art.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (7)
1. An air conditioner connecting pipe which is characterized in that: comprises a heat preservation hose (1);
the rear end of the heat-insulating hose (1) is fixedly connected with an installation pipe A (2);
the front end of the heat-insulating hose (1) is fixedly connected with a mounting pipe B (3);
the mounting pipe A (2) comprises ring grooves (201), protruding parts A (202) and a rear groove (2021), the ring grooves (201) are fixedly connected to the rear end of the mounting pipe A (2), the number of the protruding parts A (202) is two, the protruding parts A (202) are fixedly connected to the left end and the right end of the mounting pipe A (2), and the rear groove (2021) is fixedly connected to the rear ends of the two protruding parts A (202);
the heat preservation hose (1) outer curved side has cup jointed pipeline installation frame (4), and pipeline installation frame (4) are including roof plate (401), and roof plate (401) are located heat preservation hose (1) top, and roof plate (401) inside runs through perpendicularly has four groups of screw holes.
2. An air-conditioning connection pipe according to claim 1, wherein the installation pipe a (2) further comprises:
the fixing blocks (203) are arranged in two groups, and the fixing blocks (203) are fixedly connected to the inner part of the rear groove (2021);
the side through hole (2031), the side through hole (2031) transversely penetrates through the inside of the fixed block (203);
the number of the sliding rods (204) is two, and the sliding rods (204) are arranged on the left side and the right side of the side through hole (2031) through sliding connection.
3. An air-conditioning connection pipe according to claim 2, wherein the installation pipe a (2) further comprises:
the wedge A (205), the wedge A (205) is fixedly connected to the outer ends of the two groups of slide bars (204);
and the return spring (2051) is fixedly connected to the inner vertical surfaces of the two groups of wedges A (205).
4. An air-conditioning connection pipe according to claim 1, wherein the mounting pipe B (3) comprises:
the convex ring (301), the convex ring (301) is fixedly connected to the front end vertical surface of the installation pipe B (3);
the number of the protruding parts B (302) is two, and the protruding parts B (302) are fixedly connected to the left end and the right end of the installation pipe B (3).
5. An air-conditioning connection pipe according to claim 4, wherein the mounting pipe B (3) comprises:
the number of the plug-in components (3021) is two, and the plug-in components (3021) are fixedly connected to the front end vertical surface of the protruding part B (302);
the bent part (3022), the bent part (3022) is fixedly connected to the left and right sides of the front end of the inserting and fixing part (3021);
the arc-shaped surface (3023), the arc-shaped surface (3023) is fixedly connected to the front end of the bending part (3022);
the limiting groove (3024), limiting groove (3024) fixed connection is in kink (3022) rear end facade department.
6. A connecting pipe for an air conditioner according to claim 1, wherein the pipe mounting bracket (4) further comprises:
the top arc frame (402), the top arc frame (402) is fixedly connected to the bottom end of the top plate (401);
the side boards A (4021) are arranged in two groups, and the side boards A (4021) are fixedly connected to the left end and the right end of the top arc frame (402);
and the square hole (4022) vertically penetrates through the side board A (4021).
7. An air-conditioning connection pipe according to claim 6, wherein the pipe mount (4) further comprises:
the bottom arc frame (403), the bottom arc frame (403) is arranged at the bottom of the top arc frame (402);
the number of the side boards B (4031) is two, and the side boards B (4031) are fixedly connected with the left end and the right end of the bottom arc frame (403);
the vertical frame (4032), the vertical frame (4032) is fixedly connected to the top surface of the side board B (4031);
the wedge block B (404), the wedge block B (404) is arranged on the inner side of the vertical frame (4032) through hinge connection;
and the balancing weight (4041) is fixedly connected to the bottom of the rear end of the wedge block B (404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122417386.4U CN216045850U (en) | 2021-10-08 | 2021-10-08 | Air conditioner connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122417386.4U CN216045850U (en) | 2021-10-08 | 2021-10-08 | Air conditioner connecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216045850U true CN216045850U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122417386.4U Active CN216045850U (en) | 2021-10-08 | 2021-10-08 | Air conditioner connecting pipe |
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| CN (1) | CN216045850U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116655106A (en) * | 2023-06-26 | 2023-08-29 | 青岛鑫源环保集团有限公司 | Efficient urban sewage treatment device and treatment process adopting MBR (Membrane biological reactor) membrane |
-
2021
- 2021-10-08 CN CN202122417386.4U patent/CN216045850U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116655106A (en) * | 2023-06-26 | 2023-08-29 | 青岛鑫源环保集团有限公司 | Efficient urban sewage treatment device and treatment process adopting MBR (Membrane biological reactor) membrane |
| CN116655106B (en) * | 2023-06-26 | 2024-02-09 | 青岛鑫源环保集团有限公司 | Efficient urban sewage treatment device and treatment process adopting MBR (Membrane biological reactor) membrane |
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