CN220049300U - Water supply pipeline cleaning device - Google Patents
Water supply pipeline cleaning device Download PDFInfo
- Publication number
- CN220049300U CN220049300U CN202321616242.4U CN202321616242U CN220049300U CN 220049300 U CN220049300 U CN 220049300U CN 202321616242 U CN202321616242 U CN 202321616242U CN 220049300 U CN220049300 U CN 220049300U
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- Prior art keywords
- water supply
- sliding block
- supply pipe
- connecting rod
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 123
- 238000004140 cleaning Methods 0.000 title claims abstract description 45
- 238000005507 spraying Methods 0.000 claims abstract description 31
- 238000005406 washing Methods 0.000 abstract description 3
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 7
- 230000006978 adaptation Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Cleaning In General (AREA)
Abstract
The utility model provides a water supply pipeline cleaning device, and belongs to the technical field of pipeline cleaning; the water supply pipe cleaning device includes: the device comprises a bottom plate, a supporting plate, a water spraying cylinder, a fixing frame, a hairbrush assembly, a screw rod, a first sliding block, a second sliding block, a first connecting rod and a second connecting rod; through rotating the lead screw, make lead screw drive first slider and second slider relative or opposite direction remove to realize that first slider and second slider drive brush subassembly through head rod and second connecting rod, thereby adjust the radius of rotation of brush subassembly, make the brush subassembly can laminate mutually the inner wall of the water supply pipe of different specification internal diameters, and then realize that brush subassembly and washing water phase cooperation wash the inner wall of water supply pipe, not only can be to promoting the cleaning performance of brush subassembly to water supply pipe, can also promote the suitability of product.
Description
Technical Field
The utility model belongs to the technical field of pipeline cleaning, and particularly relates to a water supply pipeline cleaning device.
Background
In the related art, after a long period of use of the water supply pipe, the inner wall of the water supply pipe may be fouled to affect the normal use of the water supply pipe, and thus the water supply pipe may need to be cleaned periodically.
The prior art (publication number: CN 216095352U) discloses a water supply pipe cleaning device, relates to water supply pipe cleaning technical field, can include: a compressed air tank capable of supplying compressed air; a water tank capable of providing water for cleaning; the compressed air tank is connected with the mixing device through an air supply pipe, and the water tank is connected with the mixing device through a water supply pipe; the rotary cleaning mechanism can extend into the water supply pipeline to clean the water supply pipeline, the mixing device is connected with a cleaning pipeline, and the cleaning pipeline is connected with the rotary cleaning mechanism through a rotary joint.
In this prior art, since the turning radius of the rotary cleaning mechanism cannot be adjusted, it cannot be adapted to water supply pipes of different specification inner diameters, thereby reducing the applicability of the product.
Disclosure of Invention
In order to solve the problem that the rotating radius of the rotating cleaning mechanism in the prior art cannot be adjusted, so that the rotating radius cannot adapt to water supply pipelines with different specifications and inner diameters, and therefore the applicability of products is reduced, the utility model provides the water supply pipeline cleaning device. The specific technical scheme is as follows:
a water supply pipe cleaning apparatus, the water supply pipe cleaning apparatus comprising: the device comprises a bottom plate, a supporting plate, a water spraying cylinder, a fixing frame, a hairbrush assembly, a screw rod, a first sliding block, a second sliding block, a first connecting rod and a second connecting rod; the supporting plate is rotationally connected with the bottom plate; a plurality of water spraying holes are formed in the circumference of the water spraying cylinder, and the water spraying cylinder is connected with the center of the supporting plate; the fixing frame is L-shaped and is fixed on the circumference of the supporting plate; the hairbrush component is positioned at one side of the fixing frame; the outer wall of the screw rod is symmetrically provided with a first external thread and a second external thread, the spiral directions of the first external thread and the second external thread are opposite, one end of the screw rod is rotationally connected with the fixing frame, and the other end of the screw rod is rotationally connected with the supporting plate; the first sliding block is internally provided with a first internal thread, and the first internal thread of the first sliding block is sleeved outside the first external thread of the screw rod; the second sliding block is internally provided with a second internal thread, and the second internal thread of the second sliding block is sleeved outside the second external thread of the screw rod; one end of the first connecting rod is rotationally connected with the first sliding block, and the other end of the first connecting rod is rotationally connected with the bottom of the hairbrush assembly; one end of the second connecting rod is rotationally connected with the second sliding block, the other end of the second connecting rod is rotationally connected with the bottom of the hairbrush assembly, and the first connecting rod and the second connecting rod are arranged in a crossing manner; wherein, first external screw thread and first internal screw thread looks adaptation, second external screw thread and second internal screw thread looks adaptation.
In addition, the water supply pipeline cleaning device in the technical scheme provided by the utility model can also have the following additional technical characteristics:
in the above technical solution, the water supply pipe cleaning device further includes: a slewing bearing; the slewing bearing comprises an inner ring, an outer ring and a plurality of balls, wherein the balls are simultaneously embedded into the inner ring and the outer ring; wherein, the inner race is fixed on the bottom plate, and the backup pad is fixed on the outer race.
In the above technical solution, the water supply pipe cleaning device further includes: a connecting cylinder and a water pipe; the connecting cylinder is a hollow cavity with openings at two ends, one end of the connecting cylinder is connected with the supporting plate, and the other end of the connecting cylinder is connected with the water spraying cylinder; the water pipe sequentially passes through the bottom plate, the inner ring, the supporting plate and the connecting cylinder, and the water pipe is communicated with the water spraying cylinder.
In the above technical solution, the water supply pipe cleaning device further includes: a hand wheel; the hand wheel suit is in the outside of lead screw, and the hand wheel is located the below of backup pad.
In the above technical solution, the water supply pipe cleaning device further includes: a chute; the chute is arranged on the fixing frame, and the first sliding block and the second sliding block are embedded into the chute.
In the above technical solution, the brush assembly includes: the brush comprises a mounting plate and a brush body; the mounting plate is simultaneously connected with the first connecting rod and the second connecting rod in a rotating way; the brush body is fixed on the mounting plate.
In the above technical solution, the brush assembly includes: supporting rollers; the two supporting rollers are connected with the mounting plate and are positioned on two sides of the hairbrush body; wherein, the supporting roller is a universal roller.
Compared with the prior art, the water supply pipeline cleaning device has the beneficial effects that:
1. through rotating the lead screw, make lead screw drive first slider and second slider relative or opposite direction remove to realize that first slider and second slider drive brush subassembly through head rod and second connecting rod, thereby adjust the radius of rotation of brush subassembly, make the brush subassembly can laminate mutually the inner wall of the water supply pipe of different specification internal diameters, and then realize that brush subassembly and washing water phase cooperation wash the inner wall of water supply pipe, not only can be to promoting the cleaning performance of brush subassembly to water supply pipe, can also promote the suitability of product.
2. The plurality of balls are simultaneously embedded into the inner ring and the outer ring, so that the inner ring and the outer ring can rotate relatively; through with the inner circle fixed baseplate on to fix the backup pad on the outer circle, with the realization backup pad with outer lane synchronous rotation, thereby realize that the backup pad can rotate relative bottom plate.
3. The water pipe sequentially passes through the bottom plate, the inner ring, the supporting plate and the connecting cylinder, and is communicated with the water spraying cylinder, so that the cleaning water can enter the water spraying cylinder through the water pipe.
4. Through the outside with the hand wheel suit at the lead screw to make the hand wheel be located the below of backup pad, in order to realize driving the lead screw rotation through the hand wheel, thereby reduce the degree of difficulty of rotating the lead screw, in order to promote the use experience of product.
5. Through setting up the spout on the mount to with first slider and second slider embedding spout in, with realizing that first slider and second slider remove in the spout, thereby avoid first slider and second slider to take place the skew when removing, with the stability that promotes first slider and second slider and remove.
6. Through rotating the mounting panel simultaneously with head rod and second connecting rod and be connected to fix the brush body on the mounting panel, in order to realize that the mounting panel supports the brush body, thereby realize head rod and second connecting rod drive mounting panel and brush body and remove, in order to adjust the radius of rotation of brush body, and then adapt to the water supply pipe of different specification internal diameters.
7. Through being connected two backing rolls with the mounting panel to be located the both sides of brush body with two backing rolls, with the realization mounting panel through backing roll along the inner wall rotation of water supply pipe, thereby promote brush body and mounting panel pivoted stability.
Drawings
FIG. 1 is a sectional view of a water supply pipe cleaning apparatus according to the present utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
wherein, the correspondence between the reference numerals and the component names in fig. 1 and 2 is:
10 bottom plates, 11 supporting plates, 12 water spraying cylinders, 13 water spraying holes, 14 fixing frames, 15 hairbrush assemblies, 151 mounting plates, 152 hairbrush bodies, 153 supporting rollers, 16 lead screws, 17 first sliding blocks, 18 second sliding blocks, 19 first connecting rods, 20 second connecting rods, 21 slewing bearings, 211 inner rings, 212 outer rings, 213 balls, 22 connecting cylinders, 23 water pipes, 24 hand wheels and 25 sliding grooves.
Detailed Description
The utility model will be further described with reference to specific embodiments and figures 1-2, but the utility model is not limited to these embodiments.
As shown in fig. 1 and 2, the water supply pipe cleaning apparatus includes: the water spraying device comprises a bottom plate 10, a supporting plate 11, a water spraying cylinder 12, a fixed frame 14, a hairbrush assembly 15, a lead screw 16, a first sliding block 17, a second sliding block 18, a first connecting rod 19 and a second connecting rod 20; the supporting plate 11 is rotatably connected with the bottom plate 10; a plurality of water spraying holes 13 are formed in the circumferential direction of the water spraying cylinder 12, and the water spraying cylinder 12 is connected with the center of the supporting plate 11; the fixing frame 14 is L-shaped, and the fixing frame 14 is fixed on the circumference of the supporting plate 11; the brush assembly 15 is positioned at one side of the fixing frame 14; the outer wall of the screw rod 16 is symmetrically provided with a first external thread and a second external thread, the spiral directions of the first external thread and the second external thread are opposite, one end of the screw rod 16 is rotationally connected with the fixing frame 14, and the other end of the screw rod 16 is rotationally connected with the supporting plate 11; the first sliding block 17 is internally provided with a first internal thread, and the first internal thread of the first sliding block 17 is sleeved outside the first external thread of the screw rod 16; the second sliding block 18 is internally provided with a second internal thread, and the second internal thread of the second sliding block 18 is sleeved outside the second external thread of the screw rod 16; one end of the first connecting rod 19 is rotationally connected with the first sliding block 17, and the other end of the first connecting rod 19 is rotationally connected with the bottom of the brush assembly 15; one end of the second connecting rod 20 is rotationally connected with the second sliding block 18, the other end of the second connecting rod 20 is rotationally connected with the bottom of the brush assembly 15, and the first connecting rod 19 is crossed with the second connecting rod 20; wherein, first external screw thread and first internal screw thread looks adaptation, second external screw thread and second internal screw thread looks adaptation.
The support plate 11 is rotatably connected with the bottom plate 10, and the water spraying cylinder 12 is connected with the center of the support plate 11, so that the water spraying cylinder 12 and the support plate 11 can synchronously rotate relative to the bottom plate 10; by arranging the plurality of water spray holes 13 in the circumferential direction of the water spray drum 12, when water is injected into the water spray drum 12, the water is sprayed through the water spray holes 13, so that the water spray drum 12 and the support plate 11 can be rotated relative to the base plate 10 by the force of the water. By fixing the L-shaped fixing frame 14 on the circumference of the supporting plate 11, one end of the screw rod 16 is rotatably connected with the fixing frame 14, and the other end of the screw rod 16 is rotatably connected with the supporting plate 11, so that the screw rod 16 is supported by matching the supporting plate 11 and the fixing frame 14, and the screw rod 16 can rotate in the fixing frame 14. By sleeving the first sliding block 17 on the outer side of the first external thread of the screw rod 16, sleeving the second sliding block 18 on the outer side of the second external thread of the screw rod 16, and enabling the spiral directions of the first external thread and the second external thread to be opposite, when the screw rod 16 rotates, the screw rod 16 drives the first sliding block 17 and the second sliding block 18 to move relatively or oppositely. One end of the first connecting rod 19 and one end of the second connecting rod 20 are respectively connected with the first sliding block 17 and the second sliding block 18 in a rotating way, and the other end of the first connecting rod 19 and the other end of the second connecting rod 20 are simultaneously connected with the brush assembly 15, so that when the first sliding block 17 and the second sliding block 18 move in opposite directions, the first sliding block 17 and the second sliding block 18 drive the brush assembly 15 to move through the first connecting rod 19 and the second connecting rod 20, and the rotating radius of the brush assembly 15 is adjusted to adapt to water supply pipes 23 with different specifications and inner diameters.
When the product is specifically used, the water spraying cylinder 12 is communicated with the mixing device, and the mixing rotating shaft is simultaneously communicated with the water tank and the compressed air tank, so that the cleaning water and the compressed air are mixed and then enter the water spraying cylinder 12, and the pressure of the cleaning water is increased; then, the product is placed in a water supply pipe 23 channels; then, the screw rod 16 is rotated, so that the screw rod 16 drives the first sliding block 17 and the second sliding block 18 to relatively move, and the first sliding block 17 and the second sliding block 18 drive the brush assembly 15 to move outwards through the first connecting rod 19 and the second connecting rod 20, and the brush assembly 15 is attached to the inner wall of the water supply pipe 23; then, the water tank and the compressed air tank are opened, water is injected into the water spraying cylinder 12 and sprayed out through the water spraying holes 13, so that the supporting plate 11 rotates relative to the bottom plate 10 by utilizing the acting force of the water, and the brush assembly 15 cleans the inner wall of the water supply pipe 23.
By adopting the structure, the screw rod 16 is rotated, so that the screw rod 16 drives the first slide block 17 and the second slide block 18 to move relatively or oppositely, the first slide block 17 and the second slide block 18 drive the brush assembly 15 through the first connecting rod 19 and the second connecting rod 20, the rotation radius of the brush assembly 15 is adjusted, the brush assembly 15 can be attached to the inner walls of the water supply pipes 23 with different specification inner diameters, the brush assembly 15 and the cleaning water are matched to clean the inner walls of the water supply pipes 23, the cleaning effect of the brush assembly 15 on the water supply pipes 23 can be improved, and the applicability of products can be improved.
In an embodiment of the present utility model, as shown in fig. 1 and 2, the water supply pipe cleaning apparatus further includes: a slewing bearing 21; the slewing bearing 21 includes an inner ring 211, an outer ring 212, and a plurality of balls 213, the plurality of balls 213 being simultaneously embedded in the inner ring 211 and the outer ring 212; wherein the inner ring 211 is fixed on the bottom plate 10, and the supporting plate 11 is fixed on the outer ring 212.
By simultaneously embedding the plurality of balls 213 into the inner ring 211 and the outer ring 212, the inner ring 211 and the outer ring 212 can relatively rotate; the inner ring 211 is fixed on the bottom plate 10, and the supporting plate 11 is fixed on the outer ring 212, so that the supporting plate 11 and the outer ring 212 synchronously rotate, and the supporting plate 11 can rotate relative to the bottom plate 10.
In an embodiment of the present utility model, as shown in fig. 1 and 2, the water supply pipe cleaning apparatus further includes: a connecting tube 22 and a water tube 23; the connecting cylinder 22 is a hollow cavity with openings at two ends, one end of the connecting cylinder 22 is connected with the supporting plate 11, and the other end of the connecting cylinder 22 is connected with the water spraying cylinder 12; the water pipe 23 passes through the bottom plate 10, the inner ring 211, the support plate 11 and the connection cylinder 22 in this order, and the water pipe 23 communicates with the water spraying cylinder 12.
By arranging the connecting cylinder 22 as a hollow cavity with openings at both ends, one end of the connecting cylinder 22 is connected with the supporting plate 11, and the other end of the connecting cylinder 22 is connected with the water spraying cylinder 12, so that the supporting plate 11 supports the water spraying cylinder 12 through the connecting cylinder 22; by passing the water pipe 23 through the bottom plate 10, the inner ring 211, the support plate 11 and the connection cylinder 22 in this order and communicating the water pipe 23 with the water spray cylinder 12, it is achieved that the washing water can be introduced into the water spray cylinder 12 through the water pipe 23.
In an embodiment of the present utility model, as shown in fig. 1 and 2, the water supply pipe cleaning apparatus further includes: a hand wheel 24; the hand wheel 24 is sleeved on the outer side of the screw rod 16, and the hand wheel 24 is positioned below the supporting plate 11.
Through the outside with the hand wheel 24 suit at lead screw 16 to make the hand wheel 24 be located the below of backup pad 11, in order to realize driving lead screw 16 rotation through hand wheel 24, thereby reduce the degree of difficulty of rotating lead screw 16, in order to promote the use experience of product.
In an embodiment of the present utility model, as shown in fig. 1 and 2, the water supply pipe cleaning apparatus further includes: a chute 25; the sliding groove 25 is arranged on the fixed frame 14, and the first sliding block 17 and the second sliding block 18 are embedded in the sliding groove 25.
The sliding groove 25 is arranged on the fixed frame 14, and the first sliding block 17 and the second sliding block 18 are embedded into the sliding groove 25, so that the first sliding block 17 and the second sliding block 18 move in the sliding groove 25, and the first sliding block 17 and the second sliding block 18 are prevented from shifting when moving, so that the moving stability of the first sliding block 17 and the second sliding block 18 is improved.
In an embodiment of the present utility model, as shown in fig. 1 and 2, the brush assembly 15 includes: a mounting plate 151 and a brush body 152; the mounting plate 151 is simultaneously in rotational connection with the first connecting rod 19 and the second connecting rod 20; the brush body 152 is fixed to the mounting plate 151.
Through rotating the mounting plate 151 simultaneously with head rod 19 and second connecting rod 20 to fix brush body 152 on mounting plate 151, in order to realize that mounting plate 151 supports brush body 152, thereby realize head rod 19 and second connecting rod 20 drive mounting plate 151 and brush body 152 removal, in order to adjust the radius of rotation of brush body 152, and then adapt to the delivery pipe 23 ways of different specification internal diameters.
In an embodiment of the present utility model, as shown in fig. 1 and 2, the brush assembly 15 includes: a supporting roller 153; two supporting rollers 153 are connected with the mounting plate 151, and the two supporting rollers 153 are positioned at two sides of the brush body 152; the supporting roller 153 is a universal roller.
By connecting the two supporting rollers 153 with the mounting plate 151 and positioning the two supporting rollers 153 on both sides of the brush body 152, the mounting plate 151 is rotated along the inner wall of the water supply pipe 23 channel by the supporting rollers 153, thereby improving the rotation stability of the brush body 152 and the mounting plate 151. By setting the support roller 153 as a universal roller, the flexibility of rotation of the support roller 153 is improved.
In the description of the present utility model, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In the present utility model, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (7)
1. A water supply pipe cleaning apparatus, characterized by comprising:
a bottom plate;
the supporting plate is rotationally connected with the bottom plate;
the periphery of the water spraying cylinder is provided with a plurality of water spraying holes, and the water spraying cylinder is connected with the center of the supporting plate;
the fixing frame is L-shaped and is fixed on the circumference of the supporting plate;
a brush assembly located at one side of the mount;
the screw rod is symmetrically provided with a first external thread and a second external thread on the outer wall of the screw rod, the spiral directions of the first external thread and the second external thread are opposite, one end of the screw rod is rotationally connected with the fixing frame, and the other end of the screw rod is rotationally connected with the supporting plate;
the first sliding block is internally provided with a first internal thread, and the first internal thread of the first sliding block is sleeved on the outer side of the first external thread of the screw rod;
the second sliding block is internally provided with a second internal thread, and the second internal thread of the second sliding block is sleeved outside the second external thread of the screw rod;
one end of the first connecting rod is rotationally connected with the first sliding block, and the other end of the first connecting rod is rotationally connected with the bottom of the hairbrush assembly;
one end of the second connecting rod is rotationally connected with the second sliding block, the other end of the second connecting rod is rotationally connected with the bottom of the hairbrush assembly, and the first connecting rod and the second connecting rod are arranged in a crossing manner;
the first external thread is matched with the first internal thread, and the second external thread is matched with the second internal thread.
2. A water supply pipe cleaning apparatus as claimed in claim 1, further comprising:
the slewing bearing comprises an inner ring, an outer ring and a plurality of balls, wherein the balls are simultaneously embedded into the inner ring and the outer ring;
the inner ring is fixed on the bottom plate, and the supporting plate is fixed on the outer ring.
3. A water supply pipe cleaning apparatus as claimed in claim 2, further comprising:
the connecting cylinder is a hollow cavity with openings at two ends, one end of the connecting cylinder is connected with the supporting plate, and the other end of the connecting cylinder is connected with the water spraying cylinder;
the water pipe sequentially penetrates through the bottom plate, the inner ring, the supporting plate and the connecting cylinder, and the water pipe is communicated with the water spraying cylinder.
4. A water supply pipe cleaning apparatus as claimed in claim 1, further comprising:
the hand wheel is sleeved on the outer side of the screw rod, and the hand wheel is positioned below the supporting plate.
5. A water supply pipe cleaning apparatus as claimed in claim 4, further comprising:
the sliding groove is arranged on the fixing frame, and the first sliding block and the second sliding block are embedded into the sliding groove.
6. A water supply pipe cleaning apparatus as claimed in claim 5, wherein the brush assembly comprises:
the mounting plate is simultaneously connected with the first connecting rod and the second connecting rod in a rotating way;
the brush body is fixed on the mounting plate.
7. A water supply pipe cleaning apparatus as claimed in claim 6, wherein the brush assembly comprises:
the two supporting rollers are connected with the mounting plate and are positioned on two sides of the hairbrush body;
wherein, the supporting roller is a universal roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321616242.4U CN220049300U (en) | 2023-06-25 | 2023-06-25 | Water supply pipeline cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321616242.4U CN220049300U (en) | 2023-06-25 | 2023-06-25 | Water supply pipeline cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220049300U true CN220049300U (en) | 2023-11-21 |
Family
ID=88753120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321616242.4U Active CN220049300U (en) | 2023-06-25 | 2023-06-25 | Water supply pipeline cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220049300U (en) |
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2023
- 2023-06-25 CN CN202321616242.4U patent/CN220049300U/en active Active
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