CN113682644A - Foreign matter prevention device for pipeline - Google Patents
Foreign matter prevention device for pipeline Download PDFInfo
- Publication number
- CN113682644A CN113682644A CN202111000150.9A CN202111000150A CN113682644A CN 113682644 A CN113682644 A CN 113682644A CN 202111000150 A CN202111000150 A CN 202111000150A CN 113682644 A CN113682644 A CN 113682644A
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- CN
- China
- Prior art keywords
- sleeve
- arc
- pipeline
- pasting
- internal member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002265 prevention Effects 0.000 title claims description 16
- 238000010030 laminating Methods 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000004873 anchoring Methods 0.000 claims description 14
- 230000008602 contraction Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D59/00—Plugs, sleeves, caps, or like rigid or semi-rigid elements for protecting parts of articles or for bundling articles, e.g. protectors for screw-threads, end caps for tubes or for bundling rod-shaped articles
- B65D59/06—Caps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
- B65D85/20—Containers, packaging elements or packages, specially adapted for particular articles or materials for incompressible or rigid rod-shaped or tubular articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The invention discloses a foreign matter preventing device for a pipeline, which is arranged at an exposed opening position of the pipeline and comprises an outer sleeve piece and an inner sleeve piece, wherein a circular through opening is formed in the middle of the outer sleeve piece, a ring cavity is formed in the outer sleeve piece at the inner side position of the circular through opening, an elastic outer pasting mechanism is arranged in the ring cavity, an inner top pasting mechanism is arranged in the inner sleeve piece, an opening is formed in one side of the inner sleeve piece close to the position of the outer sleeve piece, the inner top pasting mechanism has two working states of expansion and contraction, and the inner top pasting mechanism can clamp the pipe wall of the pipeline through being matched with the elastic outer pasting mechanism in the expansion state. The device is installed and is exposed a mouthful position at the pipeline, and interior top laminating mechanism is difficult for droing through pasting the pipe wall that the mechanism cooperation can the centre gripping pipeline outward with elasticity in the expansion state, can avoid outside debris to get into in the pipe orifice, and when interior top laminating mechanism was the shrink state, the device can be dismantled from the pipeline through the instrument, avoids the other people to destroy the device at will, has improved the effect of protection.
Description
Technical Field
The invention relates to the technical field of pipeline equipment, in particular to a foreign matter prevention device for a pipeline.
Background
The pipe is widely used in industry as a device for conveying fluid. However, since the service life of the pipe itself is limited and the route of the pipe often needs to be changed, the mouth of the pipe is inevitably exposed during the period of time in which the pipe is disassembled for the maintenance process. This situation tends to present some problems: after foreign matters such as garbage, silt and the like enter the open end, overhauling is finished, after the pipeline is installed, the equipment is started again, and in a high-speed running system, the foreign matters knock the steel body, so that the equipment is easily seriously damaged; what is more serious is that the entering of foreign matters in the circulating water system brings potential safety hazard to the operation of cooling equipment.
In order to avoid the appearance of this problem, present building site construction generally adopts two kinds of schemes to prevent that the foreign matter from getting into the pipeline mouth: firstly, using newspaper materials to plug the opening of the pipeline; second, a temporary wipe is used to cover the orifice and then tied down with a string at the flange. The first method has poor effect due to the existence of gaps, is easy to detach by people who do not know the situation, is easy to forget to take out the newspaper when the pipeline is reconnected, causes the pipeline to be disconnected, and cannot be used for multiple times; in the second method, the temporary cleaning cloth is easily scratched and loosened to fall off, so that the protection effect is poor and foreign matters are easy to enter.
Disclosure of Invention
The invention aims to provide a foreign matter prevention device for a pipeline.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the utility model provides a prevent foreign matter device for pipeline, its installs and exposes a mouthful position at the pipeline, includes outer cover and internal member, through drawing between outer cover and the internal member and connect circle fixed connection, circular opening has been seted up at outer cover middle part, and outer cover is inside to be formed with the ring chamber in the inboard position of circular opening, installs elasticity in the ring chamber and pastes the mechanism outward, internal member internally mounted has interior top laminating mechanism, and the opening has been seted up to one side that the internal member is close to outer cover position, interior top laminating mechanism has two kinds of operating condition of expansion and shrink, and interior top laminating mechanism is in the expansion state through pasting the pipe wall that the mechanism cooperation can the centre gripping pipeline outward with elasticity.
Preferably, the outer mechanism that pastes of elasticity includes multiunit arc tiling, and the external member axle center direction is evenly arranged at the ring intracavity beyond multiunit arc tiling, and the ring intracavity portion has the spring at arc tiling position fixed mounting, spring one end with correspond position arc tiling fixed connection, and the one end that the arc tiling is close to external member axial position is provided with the bulge, and the thickness of bulge is greater than the thickness in ring intracavity.
Preferably, interior top laminating mechanism includes sleeve pipe, apical axis, multiunit arc roof and pull rod, the sleeve pipe passes through the bearing frame and installs middle part in the internal member, and the sleeve pipe can rotate in the bearing frame, during the apical axis inserted the sleeve pipe from the internal member outside, be sliding connection between apical axis and the sleeve pipe, multiunit arc roof was evenly arranged in internal member axle center direction, and it is articulated through the pull rod activity between arc roof and the sleeve pipe, and the equal activity in arc roof both ends has run through the slide bar, and slide bar one end fixed mounting is on the internal member inner wall.
Preferably, the roof support further comprises an anchoring mechanism, the anchoring mechanism is installed in the pull-connecting ring, and when the top shaft is connected with the anchoring mechanism, the inner roof attaching mechanism is in an unfolded state.
Preferably, the anchoring mechanism includes cross axostylus axostyle and screw thread axle sleeve, and cross axostylus axostyle fixed mounting is in drawing the adapter ring, screw thread axle sleeve fixed mounting is in cross axostylus axostyle axle center position, and screw thread axle sleeve middle part is equipped with the screw hole, apical axis one end is equipped with the external screw thread, and the apical axis passes through the external screw thread and is connected with the screw hole cooperation.
Preferably, a through opening is formed between adjacent single rods of the cross-shaped shaft rod, and one end of the arc-shaped top plate penetrates through the through opening.
Preferably, the side of the bulge part far away from the position of the internal member is provided with an inclined surface.
Preferably, the sleeve pipe inside wall has seted up the spout, the apical axis outer wall is equipped with the protrusion rib in the spout position, protrusion rib and apical axis fixed connection, protrusion rib and the spout sliding connection of corresponding position.
Preferably, the outer side wall of the arc-shaped top plate is fixedly provided with a rubber sheet.
Compared with the prior art, the invention has the advantages that:
the device is installed in pipeline exposure mouth position, it includes outer cover spare and internal member, install the outer mechanism that pastes of elasticity in the outer cover spare, internal member internally mounted has interior top laminating mechanism, interior top laminating mechanism has two kinds of operating condition of expansion and shrink, interior top laminating mechanism is in the expansion state through paste the pipe wall that the mechanism cooperation can the centre gripping pipeline with elasticity is outer, be difficult for droing, can avoid outside debris to get into in the pipe orifice, when interior top laminating mechanism is the shrink state, the device can be dismantled from the pipeline through the instrument, avoid the random device that destroys of other people, the effect of protection has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a structural view of a foreign matter prevention apparatus for a pipe according to the present invention;
FIG. 2 is a cross-sectional view of a foreign object prevention apparatus for a pipe according to the present invention;
FIG. 3 is a cross-sectional view of the inner sleeve of the present invention;
FIG. 4 is an enlarged view of the structure at A in FIG. 2;
FIG. 5 is a structural view of an anchoring mechanism of the present invention
In the figure: 100 outer sleeve part, 110 circular through hole, 120 annular cavity, 200 inner sleeve part, 210 opening, 300 pull-connecting ring, 400 inner top attaching mechanism, 410 sleeve pipe, 420 arc top plate, 421 rubber sheet, 422 sliding groove, 430 pull rod, 431U-shaped seat, 440 sliding rod, 450 top shaft, 451 external thread, 452 cross-shaped groove, 453 protruding rib, 200 inner sleeve part, 210 opening, 400 inner top attaching mechanism,
500 elastic external pasting mechanism, 510 arc pasting block, 520 convex part, 530 spring,
600 anchoring mechanism, 610 cross shaft lever, 620 threaded shaft sleeve, 621 threaded hole, 630 running-through.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
Example one
Referring to fig. 1 and 2, the invention provides a foreign object prevention device for a pipeline, which is installed at an exposed port of the pipeline and comprises an outer sleeve 100 and an inner sleeve 200, wherein the outer sleeve 100 and the inner sleeve 200 can be of a metal structure or a hard plastic structure, and when the outer sleeve 100 and the inner sleeve 200 are of the hard plastic structure, the structural strength of the outer sleeve 100 and the inner sleeve 200 needs to be ensured; the outer sleeve 100 and the inner sleeve 200 are fixedly connected through a pull-joint ring 300, when the outer sleeve 100 and the inner sleeve 200 are of metal structures, the pull-joint ring 300 is connected with the outer sleeve 100 and the inner sleeve 200 through a full-length welding process, and when the outer sleeve 100 and the inner sleeve 200 are of hard plastic structures, the pull-joint ring 300 is connected with the outer sleeve 100 and the inner sleeve 200 through hot melting; the middle part of the outer sleeve 100 is provided with a circular through hole 110, a ring cavity 120 is formed in the outer sleeve 100 at the inner side position of the circular through hole 100, an elastic external pasting mechanism 500 is installed in the ring cavity 120, an internal top pasting mechanism 400 is installed in the internal sleeve 200, an opening 210 is formed in one side, close to the position of the outer sleeve 100, of the internal sleeve 200, the internal top pasting mechanism 400 has two working states of expansion and contraction, the internal top pasting mechanism 400 can clamp the pipe wall of a pipe in the expansion state through being matched with the elastic external pasting mechanism 500, when the pipe wall is clamped by the internal top pasting mechanism 400 and the elastic external pasting mechanism 500, the outer sleeve 100 and the internal sleeve 200 can play a role in sealing the pipe orifice, and therefore external sundries are prevented from entering the pipe orifice;
when the inside top attaching mechanism 400 is in the contracted state, the device can be detached from the pipe.
In this embodiment, the elastic external attachment mechanism 500 includes a plurality of sets of arc-shaped attachment blocks 510, the plurality of sets of arc-shaped attachment blocks 510 are uniformly arranged in the annular cavity 120 along the axial direction of the external sleeve 100, a spring 530 is fixedly mounted inside the annular cavity 120 at the position of the arc-shaped attachment block 510, one end of the spring 530 is fixedly connected with the arc-shaped attachment block 510 at the corresponding position, one end of the arc-shaped attachment block 510, which is close to the axial position of the external sleeve 100, is provided with a protruding portion 520, since the protruding portion 520 may be clamped into the annular cavity 120, when designing, the thickness of the protruding portion 520 needs to be larger than that of the annular cavity 120, so as to prevent the protruding portion 520 from being inserted into the annular cavity 120, when the external sleeve 100 is sleeved on the pipeline through the circular opening 110, the protruding portion 520 can be tightly attached to the outer wall of the pipeline through the elastic force of the spring 530, thereby ensuring the stability of the external sleeve 100 on the pipeline, and at this time, if an outsider does not make too much force, the external sleeve 100 can be sleeved on the pipeline, and blocked by the internal sleeve 200, the effect of initially protecting the pipe orifice can be achieved.
Example two
The difference between the present embodiment and other embodiments is that it can further improve the stability of the connection between the device and the pipeline, and at the same time, it is convenient to install and disassemble;
specifically, the inner top attaching mechanism 400 is composed of a sleeve 410, a top shaft 450, a plurality of sets of arc-shaped top plates 420 and pull rods 430, the sleeve 410 is installed in the middle of the inner sleeve 200 through a bearing seat, the sleeve 410 can rotate in the bearing seat, the bearing seat plays a supporting role, when the sleeve 410 is installed in the bearing seat, one end of the sleeve 410 is limited in the bearing seat to prevent the sleeve 410 from falling off, the top shaft 450 is inserted into the sleeve 410 from the outside of the inner sleeve 200, the top shaft 450 is slidably connected with the sleeve 410, the top shaft 450 can drive the sleeve 410 to rotate, the plurality of sets of arc-shaped top plates 420 are uniformly arranged in the axial direction of the inner sleeve 200, the arc-shaped top plates 420 are movably hinged with the sleeve 410 through the pull rods 430, sliding rods 440 are movably penetrated at both ends of the arc-shaped top plates 420, one end of the sliding rods 440 is fixedly installed on the inner wall of the inner sleeve 200, when the sleeve 410 rotates, the pull rods 440 are inclined, at this time, the pull rod 440 pulls or pushes the arc-shaped top plate 410, when the pull rod 440 pushes the arc-shaped top plate 410, the arc-shaped top plate 410 moves towards the inner wall of the inner sleeve member 200, and at this time, the arc-shaped top plate 410 is attached to the inner wall of the pipe, so that the function of clamping the inner wall and the outer wall of the pipe is realized with the elastic outer attaching structure 500, and the stability of the device on the pipe is further improved;
in this embodiment, the sliding groove 422 is formed in the inner side wall of the sleeve 410, the protruding rib 453 is arranged on the outer wall of the top shaft 450 at the position of the sliding groove 422, the protruding rib 453 is fixedly connected with the top shaft 450, and the protruding rib 453 is slidably connected with the sliding groove 422 at the corresponding position, so that the sleeve 410 can be driven to rotate when the top shaft 450 rotates.
EXAMPLE III
The present embodiment is different from the other embodiments in that an anchoring mechanism 600 is provided, and the stability of the unfolded state of the inside top attaching mechanism 400 can be ensured by the anchoring mechanism 600;
specifically, the anchoring mechanism 600 is installed in the tension ring 300, and when the top shaft 450 is connected to the anchoring mechanism 600, the inner top attaching mechanism 400 is in an unfolded state;
Example four
The present embodiment is different from other embodiments in that a through hole 630 is formed between adjacent single rods of the cross shaft 610, and when the cross shaft 610 is installed, the through hole 630 is to be ensured to correspond to the position of the arc-shaped top plate 420, so that one end of the arc-shaped top plate 420 can pass through the through hole 630, and the arc-shaped top plate 420 can be ensured to extend into the inner wall of the pipeline.
In this embodiment, the side of the protrusion 520 away from the inner sleeve 200 is provided with an inclined surface, and the inclined surface inclines from the outer side of the protrusion 520 to the axis of the outer sleeve 100, so that the circular opening 110 of the outer sleeve 100 can be smoothly sleeved on the pipeline, and at this time, the protrusion 520 can be attached to the outer wall of the pipe.
In this embodiment, the outer side wall of the arc-shaped top plate 420 is fixedly provided with the rubber sheet 421, so that the friction between the arc-shaped top plate 420 and the pipe wall is improved, and the stability of the device on the pipeline is ensured.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes or modifications may be made by the patentees within the scope of the appended claims, and within the scope of the invention, as long as they do not exceed the scope of the invention described in the claims.
Claims (9)
1. A foreign matter prevention device for a pipeline, which is installed at a pipeline exposure port position, characterized in that: including outer sleeve spare and internal member, through drawing to connect circle fixed connection between outer sleeve spare and the internal member, circular opening has been seted up at outer sleeve spare middle part, and outer sleeve spare is inside to be formed with the ring chamber in the inboard position of circular opening, installs the outer mechanism that pastes of elasticity in the ring chamber, internal member internally mounted has interior top laminating mechanism, and the opening has been seted up to one side that the internal member is close to outer sleeve spare position, interior top laminating mechanism has expansion and two kinds of operating condition of shrink, and interior top laminating mechanism is developing the state through pasting the pipe wall that the mechanism cooperation can the centre gripping pipeline with elasticity outward.
2. A foreign object prevention apparatus for pipes according to claim 1, wherein: the elastic outer pasting mechanism comprises a plurality of groups of arc pasting blocks, the axis directions of the external member are uniformly arranged in the annular cavity except the plurality of groups of arc pasting blocks, a spring is fixedly arranged in the position of each arc pasting block in the annular cavity, one end of each spring is fixedly connected with the corresponding position of each arc pasting block, one end, close to the axial position of the external member, of each arc pasting block is provided with a protruding portion, and the thickness of each protruding portion is larger than that of the annular cavity.
3. A foreign object prevention apparatus for pipes according to claim 1, wherein: interior top laminating mechanism includes sleeve pipe, apical axis, multiunit arc roof and pull rod, the sleeve pipe passes through the bearing frame and installs middle part in the internal member, and the sleeve pipe can rotate in the bearing frame, during the apical axis inserted the sleeve pipe from the internal member outside, be sliding connection between apical axis and the sleeve pipe, multiunit arc roof evenly arranged with internal member axle center direction, through pull rod activity hinge between arc roof and the sleeve pipe, the equal activity in arc roof both ends has run through the slide bar, slide bar one end fixed mounting is on the internal member inner wall.
4. A foreign object prevention apparatus for pipes according to claim 3, wherein: the anchoring mechanism is arranged in the pull-connection ring, and when the ejector shaft is connected with the anchoring mechanism, the inner top attaching mechanism is in an unfolding state.
5. A foreign object prevention apparatus for pipes according to claim 4, wherein: the anchoring mechanism comprises a cross shaft rod and a threaded shaft sleeve, the cross shaft rod is fixedly installed in the pull-connection ring, the threaded shaft sleeve is fixedly installed at the axis position of the cross shaft rod, a threaded hole is formed in the middle of the threaded shaft sleeve, an external thread is arranged at one end of the top shaft, and the top shaft is connected with the threaded hole in a matched mode through the external thread.
6. A foreign object prevention apparatus for pipes according to claim 5, wherein: a through opening is formed between adjacent single rods of the cross-shaped shaft rod, and one end of the arc-shaped top plate penetrates through the through opening.
7. A foreign object prevention apparatus for pipes according to claim 2, wherein: and an inclined surface is arranged on one side of the protruding part away from the position of the internal member.
8. A foreign object prevention apparatus for pipes according to claim 3, wherein: the sleeve pipe inside wall has seted up the spout, the apical axis outer wall is equipped with the protrusion rib in the spout position, protrusion rib and apical axis fixed connection, protrusion rib and the spout sliding connection who corresponds the position.
9. A foreign object prevention apparatus for pipes according to claim 6, wherein: and a rubber sheet is fixedly arranged on the outer side wall of the arc-shaped top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111000150.9A CN113682644A (en) | 2021-08-30 | 2021-08-30 | Foreign matter prevention device for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111000150.9A CN113682644A (en) | 2021-08-30 | 2021-08-30 | Foreign matter prevention device for pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113682644A true CN113682644A (en) | 2021-11-23 |
Family
ID=78583738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111000150.9A Pending CN113682644A (en) | 2021-08-30 | 2021-08-30 | Foreign matter prevention device for pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113682644A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343583Y (en) * | 1998-09-24 | 1999-10-13 | 永嘉县七星机械制造有限公司 | Radial clamp for valve measurer |
| CN207569433U (en) * | 2017-08-09 | 2018-07-03 | 天津市津丰管业有限公司 | A kind of closeouts for hot-water heating PPR pipe |
| CN207791597U (en) * | 2017-12-26 | 2018-08-31 | 广州发展集团股份有限公司 | A kind of anti-foreign matter device for pipeline opening |
| CN212361238U (en) * | 2020-06-22 | 2021-01-15 | 涿州市奇胜塑料制品有限公司 | Plastic pipe plug structure |
| CN213454438U (en) * | 2020-09-29 | 2021-06-15 | 潜江市德尔法汽车零部件有限公司 | Intelligent pipeline sealing plug for refrigerator |
| CN213900308U (en) * | 2020-12-15 | 2021-08-06 | 鼎同(天津)有限公司 | Rubber dustproof blanking cover convenient to disassemble and assemble |
-
2021
- 2021-08-30 CN CN202111000150.9A patent/CN113682644A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2343583Y (en) * | 1998-09-24 | 1999-10-13 | 永嘉县七星机械制造有限公司 | Radial clamp for valve measurer |
| CN207569433U (en) * | 2017-08-09 | 2018-07-03 | 天津市津丰管业有限公司 | A kind of closeouts for hot-water heating PPR pipe |
| CN207791597U (en) * | 2017-12-26 | 2018-08-31 | 广州发展集团股份有限公司 | A kind of anti-foreign matter device for pipeline opening |
| CN212361238U (en) * | 2020-06-22 | 2021-01-15 | 涿州市奇胜塑料制品有限公司 | Plastic pipe plug structure |
| CN213454438U (en) * | 2020-09-29 | 2021-06-15 | 潜江市德尔法汽车零部件有限公司 | Intelligent pipeline sealing plug for refrigerator |
| CN213900308U (en) * | 2020-12-15 | 2021-08-06 | 鼎同(天津)有限公司 | Rubber dustproof blanking cover convenient to disassemble and assemble |
Non-Patent Citations (1)
| Title |
|---|
| 腾讯视频: "《https://v.qq.com/x/page/g3053y4b1cz.html》", 18 January 2020 * |
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Application publication date: 20211123 |
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