CN114087436B - Compressor refrigeration pipe fitting of convenient equipment - Google Patents
Compressor refrigeration pipe fitting of convenient equipment Download PDFInfo
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- CN114087436B CN114087436B CN202210025259.6A CN202210025259A CN114087436B CN 114087436 B CN114087436 B CN 114087436B CN 202210025259 A CN202210025259 A CN 202210025259A CN 114087436 B CN114087436 B CN 114087436B
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- pipeline
- refrigeration
- pipe fitting
- rotating ring
- sealing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a compressor refrigeration pipe fitting convenient to assemble, which comprises a body pipeline and a first refrigeration pipeline and a second refrigeration pipeline which are respectively arranged at two ends of the body pipeline, wherein sealing sleeves used for sealing the pipelines are respectively connected between the two ends of the body pipeline and the first refrigeration pipeline and between the two ends of the body pipeline and the second refrigeration pipeline, a rotating ring is fixedly connected inside the body pipeline, opposite surfaces of the first refrigeration pipeline and the second refrigeration pipeline respectively extend inside the rotating ring, a winding wheel is rotatably installed at the back end of each transverse plate through a one-way rotating mechanism, and the winding wheel is used for winding and adjusting a connecting rope fixed on the outer walls of two installation blocks. The invention improves the working efficiency when the refrigeration pipeline is butted with the pipeline body, effectively avoids the abrasion caused by uneven stress when the sealing sleeve enters, and further improves the sealing quality.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a compressor refrigeration pipe fitting convenient to assemble.
Background
The pipe fitting is a general name of parts in a pipeline system which play roles in connection, control, direction change, flow distribution, sealing, supporting and the like. In refrigeration or heating appliances such as air conditioners, refrigerators and the like, in order to exchange heat and cold, a refrigerant needs to be compressed by a compressor so as to absorb or release heat; because the physical property of refrigerant, become the gaseous state by high pressure liquid when the heat absorption, when exothermic, become liquid, so, the refrigerant is when inputing or exporting the compressor, its sealed fixed reliability is especially important, current compressor refrigeration pipe fitting, when pegging graft with the pipeline body to first refrigeration pipeline and second refrigeration pipeline, often need the cover to be equipped with the leakproofness that the sealing washer just can guarantee to connect between the pipeline, first refrigeration pipeline and second refrigeration pipeline behind the sealing washer are established to the cover, when reinserting the pipeline body, the degree of difficulty is great relatively, and the atress is even when unable assurance is filled in, easily cause the wearing and tearing of sealing washer, influence the leakproofness of follow-up use.
Disclosure of Invention
The invention aims to provide a compressor refrigeration pipe fitting convenient to assemble, which improves the working efficiency when a refrigeration pipeline is butted with a pipeline body, effectively avoids the abrasion caused by uneven stress when a sealing sleeve enters, further improves the sealing quality and solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a compressor refrigeration pipe fitting convenient to assemble comprises a body pipeline and a first refrigeration pipeline and a second refrigeration pipeline which are arranged at two ends of the body pipeline respectively, wherein a sealing sleeve for sealing the pipelines is connected between two ends of the body pipeline and the first refrigeration pipeline and between two ends of the body pipeline and the second refrigeration pipeline respectively;
the adjusting mechanism comprises a plurality of transverse plates, the transverse plates are arranged on the outer wall of the rotating ring in a circumferential array mode by taking the circle center of the rotating ring as the axis, each transverse plate is rotatably provided with a winding wheel at the back end through a one-way rotating mechanism, and the winding wheels are used for winding and adjusting the connecting ropes fixed on the outer walls of the two mounting blocks.
Preferably, one-way slewing mechanism includes a plurality of pivots, and is a plurality of the pivot rotates and installs the looks back at the diaphragm, every the both ends and the rolling wheel fixed connection of pivot, every the friction pulley is installed through one-way bearing in the middle part of pivot, the lateral wall of body pipeline is fixed with the friction pad that sets up relatively with the friction pulley, the middle part of swivel becket is provided with and is used for friction pulley pivoted drive mechanism.
Preferably, drive mechanism includes a plurality of fly leafs, every the fly leaf passes through the spacing outer wall that slides on the rotating ring of recess, every sliding installation from top to bottom between fly leaf and the diaphragm, it has the hinge bar to articulate between diaphragm and the rotating ring lateral wall, the rotating ring outer wall is connected with the screw rod mechanism that is used for diaphragm phase to back of the body motion or carries on the back.
Preferably, screw rod mechanism includes four dwangs, four the dwang is rotated through the installed part respectively and is installed on the outer wall of swivel becket, every the back of the body end threaded connection that carries on the back of the body of installed part has the rod cover, two the lateral wall fixed connection of the end of the back of the body of rod cover and fly leaf mutually, body pipeline middle part is rotated and is installed and is used for driving four dwang pivoted actuating mechanism.
Preferably, actuating mechanism includes rotating sleeve, rotating sleeve rotates the middle part of installing at the body pipeline, rotating sleeve's inner circle extends to the inside of body pipeline and is provided with annular array's tooth, every the outer wall of dwang be fixed with tooth engaged with gear.
Preferably, the opposite face of diaphragm fixedly connected with fixture block, seted up on the seal bush with a plurality of draw-in grooves of fixture block assorted.
Preferably, the two sealing sleeves are made of rubber materials.
Preferably, both ends fixedly connected with of body pipeline is used for connecting the rope and stablizes driven fixed pulley.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the arrangement of the one-way rotating mechanism, the friction wheel drives the winding wheel to wind once, the sealing sleeve can slowly enter the inside of the pipeline body, and the annular array of the connecting rope is matched, so that the stress of the sealing sleeve is uniform when the sealing sleeve enters, on one hand, the working efficiency of the butt joint of the refrigeration pipeline and the pipeline body is improved, and meanwhile, the abrasion caused by uneven stress of the sealing sleeve is effectively avoided, and the sealing quality is further improved.
2. According to the invention, through the arrangement of the structures, when the rotating sleeve rotates back and forth, the rotating rod can further rotate back and forth, so that the movable plate moves back and forth, and the winding wheel continuously performs slow pulling type feeding on the connecting rope, thereby facilitating adjustment of the expansion amount of the first refrigerating pipeline and the second refrigerating pipeline, facilitating adjustment of the installation length of the pipelines and further improving the working efficiency.
3. According to the invention, through further arrangement of the structure, after adjustment is completed, the rotating sleeve is manually rotated, so that the rotating sleeve rotates in a single direction, the movable plate moves towards one end close to the friction pad, the transverse plate drives the clamping block to move further at the moment, the clamping block is inserted into the clamping groove, and the sealing sleeve can be fixed through the clamping action of the clamping block and the clamping groove.
Drawings
FIG. 1 is a schematic perspective sectional view of the present invention;
FIG. 2 is a schematic front sectional view of the present invention;
FIG. 3 is a schematic view of a partial cross-sectional structure of the present invention;
FIG. 4 is a schematic perspective view of the present invention;
FIG. 5 is an enlarged view of the structure at A in FIG. 1 according to the present invention.
In the figure: 1. a first refrigeration conduit; 2. a friction pad; 3. a friction wheel; 4. a body duct; 5. rotating the sleeve; 6. a clamping block; 7. a fixed pulley; 8. connecting ropes; 9. sealing sleeves; 10. a card slot; 11. mounting blocks; 12. a second refrigeration conduit; 13. a movable plate; 15. a rotating ring; 16. a transverse plate; 17. a rotating shaft; 18. a winding wheel; 19. a rod sleeve; 20. rotating the rod; 22. a groove; 23. a mounting member; 24. a gear; 25. teeth; 26. a hinged lever.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 5, the present invention provides a technical solution: a compressor refrigeration pipe fitting convenient to assemble comprises a body pipeline 4 and a first refrigeration pipeline 1 and a second refrigeration pipeline 12 which are arranged at two ends of the body pipeline 4 respectively, sealing sleeves 9 used for sealing pipelines are connected between two ends of the body pipeline 4 and the first refrigeration pipeline 1 and the second refrigeration pipeline 12 respectively, a rotating ring 15 is fixedly connected inside the body pipeline 4, opposite surfaces of the first refrigeration pipeline 1 and the second refrigeration pipeline 12 extend inside the rotating ring 15 respectively, and an adjusting mechanism used for retracting the first refrigeration pipeline 1 or the second refrigeration pipeline 12 is connected to the rotating ring 15;
the adjusting mechanism comprises a plurality of transverse plates 16, the transverse plates 16 are circumferentially arrayed on the outer wall of the rotating ring 15 by taking the circle center of the rotating ring 15 as an axis, a winding wheel 18 is rotatably mounted at the opposite ends of each transverse plate 16 through a one-way rotating mechanism, and the winding wheel 18 is used for winding and adjusting the connecting ropes 8 fixed on the outer walls of the two mounting blocks 11.
Through the setting of one-way slewing mechanism for friction pulley 3 rotates and drives wind-up wheel 18 and take place a rolling, can make seal cover 9 slowly get into inside body pipeline 4, and the annular array of rope 8 is connected in the cooperation, makes seal cover 9 get into and makes the atress even, on the one hand, has improved the work efficiency when refrigerating pipeline docks with the pipeline body, has effectively avoided seal cover 9 to get into the wearing and tearing that cause because of the atress inequality simultaneously, further improves sealing quality.
Further, one-way slewing mechanism includes a plurality of pivots 17, and a plurality of pivots 17 rotate and install the looks back at diaphragm 16, and the both ends and the wind-up wheel 18 fixed connection of every pivot 17, and friction pulley 3 is installed through one-way bearing in the middle part of every pivot 17, and the lateral wall of body pipeline 4 is fixed with the friction pad 2 that sets up with friction pulley 3 relatively, and the middle part of swivel 15 is provided with and is used for the pivoted drive mechanism of friction pulley 3.
When the movable plate 13 moves to a direction approaching the friction pad 2, the hinge action of the hinge rod 26 and the cross plate 16 can slide up and down on the side wall of the movable plate 13, so that the friction wheel 3 has a horizontal direction and downward movement tendency.
Further, the transmission mechanism comprises a plurality of movable plates 13, each movable plate 13 slides on the outer wall of the rotating ring 15 in a limited manner through the groove 22, each movable plate 13 and the transverse plate 16 are mounted in a vertically sliding manner, the transverse plate 16 and the side wall of the rotating ring 15 are hinged to each other through a hinge rod 26, and the outer wall of the rotating ring 15 is connected with a screw mechanism for the transverse plates 16 to move towards or away from each other.
Further, screw mechanism includes four dwang 20, and four dwang 20 rotate through installed part 23 respectively and install on the outer wall of swivel ring 15, and the back of the body end threaded connection of every installed part 23 has rod cover 19, and the back of the body end of two rod covers 19 and the lateral wall fixed connection of fly leaf 13, body pipeline 4 middle part rotation install be used for driving four dwang 20 pivoted actuating mechanism.
When the gear 24 drives the rotating rod 20 to rotate, the movable plate 13 can move back and forth inside the groove 22 due to the threaded connection between the rod sleeve 19 and the rotating rod 20 and the limit function of the rod sleeve 19.
Further, the driving mechanism comprises a rotating sleeve 5, the rotating sleeve 5 is rotatably installed in the middle of the body pipeline 4, the inner ring of the rotating sleeve 5 extends into the body pipeline 4 and is provided with an annular array of teeth 25, and a gear 24 meshed with the teeth 25 is fixed on the outer wall of each rotating rod 20.
The rotating sleeve 5 is manually rotated back and forth, and due to the meshing effect of the teeth 25 and the gears 24, the simultaneous rotation of the plurality of gears 24 can be further realized.
Furthermore, the opposite surface of the transverse plate 16 is fixedly connected with a clamping block 6, and the sealing sleeve 9 is provided with a plurality of clamping grooves 10 matched with the clamping block 6.
After the regulation is accomplished, manual rotation rotates cover 5, make rotation cover 5 take place one-way rotation, make fly leaf 13 to the one end motion that is close to friction pad 2, diaphragm 16 drives fixture block 6 further motion this moment, thereby make fixture block 6 insert inside draw-in groove 10, joint effect through fixture block 6 and draw-in groove 10, alright realize the fixed of seal cover 9, and simultaneously, because the annular of fixture block 6 sets up the material setting of cooperation seal cover 9, the annular extrusion effect of fixture block 6 alright make seal cover 9 and first refrigeration pipeline 1 this moment, zonulae occludens between seal cover 9 and the second refrigeration pipeline 12, the stability and the leakproofness of connection have further been improved.
Further, the two sealing sleeves 9 are made of rubber material.
The sealing sleeve 9 is made of rubber materials, so that the tightness of the connecting position can be improved.
Further, two ends of the body pipeline 4 are fixedly connected with fixed pulleys 7 which are used for connecting ropes 8 to stably drive.
Through the fixed pulley 7, the stability of the connecting rope 8 in the winding process can be improved.
The working principle is as follows: when the compressor refrigeration pipe fitting convenient to assemble is used, the first refrigeration pipeline 1 and the second refrigeration pipeline 12 are firstly screwed into the sealing sleeves 9 arranged at the two ends of the body pipeline 4, and the first refrigeration pipeline 1 and the second refrigeration pipeline 12 are convenient to screw into the sealing sleeves 9 at the beginning because the sealing sleeves 9 are made of rubber materials and have no pressure effect;
then, the rotating sleeve 5 is manually rotated back and forth, due to the meshing action of the teeth 25 and the gears 24, the multiple gears 24 can be further rotated simultaneously, due to the threaded connection of the rod sleeve 19 and the rotating rod 20, the movable plate 13 can be moved back and forth in the groove 22 by matching with the limiting action of the rod sleeve 19, when the movable plate 13 moves towards the direction close to the friction pad 2, the hinged action of the hinged rod 26 and the transverse plate 16 can slide up and down on the side wall of the movable plate 13, so that the friction wheel 3 further has a horizontal direction and a downward movement trend, when the friction wheel 3 is contacted with the friction pad 2, the friction wheel 3 can be driven to rotate once under the action of friction force, due to the arrangement of the one-way bearing, the friction wheel 3 can further drive the winding wheel 18 to rotate once, the sealing sleeve 9 can slowly enter the inside the body pipe 4 to be matched with the annular array of the connecting rope 8, the sealing sleeve 9 is enabled to be stressed uniformly, on one hand, the working efficiency of the butt joint of the refrigeration pipeline and the pipeline body is improved, meanwhile, the abrasion caused by uneven stress of the sealing sleeve 9 is effectively avoided, and the sealing quality is further improved;
through the arrangement of the structures, when the rotating sleeve 5 rotates back and forth, the rotating rod 20 can further rotate back and forth, so that the movable plate 13 moves back and forth, and the winding wheel 18 continuously performs slow pulling type feeding on the connecting rope 8, so that the expansion amount of the first refrigerating pipeline 1 and the second refrigerating pipeline 12 can be conveniently adjusted, the installation length of the pipelines can be conveniently adjusted, and the working efficiency can be further improved;
after the regulation is accomplished, manual rotation rotates cover 5, make rotation cover 5 take place one-way rotation, make fly leaf 13 to the one end motion that is close to friction pad 2, diaphragm 16 drives fixture block 6 further motion this moment, thereby make fixture block 6 insert inside draw-in groove 10, joint effect through fixture block 6 and draw-in groove 10, alright realize the fixed of seal cover 9, and simultaneously, because the annular of fixture block 6 sets up the material setting of cooperation seal cover 9, the annular extrusion effect of fixture block 6 alright make seal cover 9 and first refrigeration pipeline 1 this moment, zonulae occludens between seal cover 9 and the second refrigeration pipeline 12, the stability and the leakproofness of connection have further been improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a compressor refrigeration pipe fitting of convenient equipment, including body pipeline (4) with first refrigeration pipeline (1) and second refrigeration pipeline (12) that body pipeline (4) both ends set up respectively, its characterized in that: a sealing sleeve (9) for sealing the pipeline is connected between each of two ends of the body pipeline (4) and the first refrigeration pipeline (1) and the second refrigeration pipeline (12), a rotating ring (15) is fixedly connected inside the body pipeline (4), opposite surfaces of the first refrigeration pipeline (1) and the second refrigeration pipeline (12) respectively extend inside the rotating ring (15), and the rotating ring (15) is connected with an adjusting mechanism for retracting the first refrigeration pipeline (1) or the second refrigeration pipeline (12);
adjustment mechanism includes a plurality of diaphragm (16), and is a plurality of diaphragm (16) use the centre of a circle of rotating ring (15) to be the outer wall of circumference array at rotating ring (15) as the axle center, every diaphragm (16) are carried on the back mutually and are rotated installation rolling wheel (18) through one-way slewing mechanism in the end, rolling wheel (18) are used for carrying out the rolling regulation to connecting rope (8) fixing at two installation piece (11) outer walls.
2. The easy-to-assemble compressor refrigeration pipe fitting of claim 1, wherein: unidirectional rotation mechanism includes a plurality of pivots (17), and is a plurality of pivot (17) rotate and install back of the body in diaphragm (16), every the both ends and wind-up wheel (18) fixed connection of pivot (17), every friction pulley (3) are installed through one-way bearing in the middle part of pivot (17), the lateral wall of body pipeline (4) is fixed with friction pad (2) that set up relatively with friction pulley (3), the middle part of swivel becket (15) is provided with and is used for friction pulley (3) pivoted drive mechanism.
3. The easy-to-assemble compressor refrigeration pipe fitting of claim 2, wherein: the transmission mechanism comprises a plurality of movable plates (13), each movable plate (13) slides on the outer wall of the rotating ring (15) in a limiting mode through a groove (22), each movable plate (13) and the transverse plate (16) are installed in a vertically sliding mode, a hinge rod (26) is hinged between the transverse plate (16) and the side wall of the rotating ring (15), and the outer wall of the rotating ring (15) is connected with a screw rod mechanism used for enabling the transverse plate (16) to move in the opposite direction or in the opposite direction.
4. The easy-to-assemble compressor refrigeration pipe fitting of claim 3, wherein: screw rod mechanism includes four dwang (20), four dwang (20) are rotated respectively through installed part (23) and are installed on the outer wall of swivel becket (15), every the back of the body end threaded connection who carries on the back of installed part (23) has rod cover (19), two the back of the body end of rod cover (19) and the lateral wall fixed connection of fly leaf (13), body pipeline (4) mid-rotation is installed and is used for driving four dwang (20) pivoted actuating mechanism.
5. The easy-to-assemble compressor refrigeration pipe fitting of claim 4, wherein: actuating mechanism is including rotating cover (5), it rotates the middle part of installing at body pipeline (4) to rotate cover (5), the inner circle that rotates cover (5) extends to the inside of body pipeline (4) and is provided with tooth (25) of annular array, every the outer wall of dwang (20) be fixed with tooth (25) engaged with gear (24) mutually.
6. The easy-to-assemble compressor refrigeration pipe fitting of claim 1, wherein: the opposite surface of the transverse plate (16) is fixedly connected with a clamping block (6), and the sealing sleeve (9) is provided with a plurality of clamping grooves (10) matched with the clamping block (6).
7. The easy-to-assemble compressor refrigeration pipe fitting of claim 1, wherein: the two sealing sleeves (9) are made of rubber materials.
8. The easy-to-assemble compressor refrigeration pipe fitting of claim 1, wherein: the two ends of the body pipeline (4) are fixedly connected with fixed pulleys (7) which are used for connecting ropes (8) to stabilize transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210025259.6A CN114087436B (en) | 2022-01-11 | 2022-01-11 | Compressor refrigeration pipe fitting of convenient equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210025259.6A CN114087436B (en) | 2022-01-11 | 2022-01-11 | Compressor refrigeration pipe fitting of convenient equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114087436A CN114087436A (en) | 2022-02-25 |
| CN114087436B true CN114087436B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210025259.6A Active CN114087436B (en) | 2022-01-11 | 2022-01-11 | Compressor refrigeration pipe fitting of convenient equipment |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4127289A (en) * | 1977-05-31 | 1978-11-28 | Daspit Ronald Albert | Coupling for pipelines |
| RU2056574C1 (en) * | 1991-06-22 | 1996-03-20 | Михаил Сергеевич Беллавин | Device for connecting pipelines at angle |
| CN206958424U (en) * | 2017-06-02 | 2018-02-02 | 江西省得一康管业有限公司 | Buried pipe quick union |
| CN110454629A (en) * | 2019-08-29 | 2019-11-15 | 燕山大学 | A kind of large-scale pipeline automatically connects locking device |
| CN108533856B (en) * | 2018-07-06 | 2020-02-21 | 合肥中安机械电器有限公司 | Compressor refrigeration pipe fitting of convenient equipment |
| CN211976244U (en) * | 2020-03-04 | 2020-11-20 | 徐成志 | Hydraulic engineering plastic conduit connecting device |
| CN214008426U (en) * | 2020-12-23 | 2021-08-20 | 山东福瑞德冷冻空调有限公司 | Compressor refrigeration pipe fitting of convenient equipment |
-
2022
- 2022-01-11 CN CN202210025259.6A patent/CN114087436B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4127289A (en) * | 1977-05-31 | 1978-11-28 | Daspit Ronald Albert | Coupling for pipelines |
| RU2056574C1 (en) * | 1991-06-22 | 1996-03-20 | Михаил Сергеевич Беллавин | Device for connecting pipelines at angle |
| CN206958424U (en) * | 2017-06-02 | 2018-02-02 | 江西省得一康管业有限公司 | Buried pipe quick union |
| CN108533856B (en) * | 2018-07-06 | 2020-02-21 | 合肥中安机械电器有限公司 | Compressor refrigeration pipe fitting of convenient equipment |
| CN110454629A (en) * | 2019-08-29 | 2019-11-15 | 燕山大学 | A kind of large-scale pipeline automatically connects locking device |
| CN211976244U (en) * | 2020-03-04 | 2020-11-20 | 徐成志 | Hydraulic engineering plastic conduit connecting device |
| CN214008426U (en) * | 2020-12-23 | 2021-08-20 | 山东福瑞德冷冻空调有限公司 | Compressor refrigeration pipe fitting of convenient equipment |
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| CN114087436A (en) | 2022-02-25 |
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