CN221014651U - Novel jet flow meter scavenging water back flushing filter tank - Google Patents
Novel jet flow meter scavenging water back flushing filter tank Download PDFInfo
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- CN221014651U CN221014651U CN202322344042.4U CN202322344042U CN221014651U CN 221014651 U CN221014651 U CN 221014651U CN 202322344042 U CN202322344042 U CN 202322344042U CN 221014651 U CN221014651 U CN 221014651U
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- jet
- meter
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- sweeping
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 230000002000 scavenging effect Effects 0.000 title claims abstract description 18
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 7
- 238000010408 sweeping Methods 0.000 claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000011001 backwashing Methods 0.000 claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims description 13
- 210000005056 cell body Anatomy 0.000 claims description 3
- 239000002516 radical scavenger Substances 0.000 claims 2
- 230000006978 adaptation Effects 0.000 claims 1
- 125000003003 spiro group Chemical group 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000002352 surface water Substances 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
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- Filtration Of Liquid (AREA)
Abstract
The utility model belongs to the technical field of municipal water supply and sewage treatment, and provides a novel jet meter scavenging water backwashing filter, which comprises a tank body with a filter layer, a jet meter sweeping pipe, a pressure meter scavenging water main pipe communicated with the jet meter sweeping pipe and a rotating mechanism for rotating the jet meter sweeping pipe, wherein the tank body is internally provided with a filter layer; the jet meter sweep pipe is arranged along the length direction of the tank body, a plurality of jet holes are uniformly arranged on the side wall of the jet meter sweep pipe at intervals along the length direction of the jet meter sweep pipe, and pressurized water sprayed by the jet holes is used for sweeping the upper surface of the filter layer. The filter adopts jet flow to sweep the impurities remained on the surface of the flushing filter layer, the jet angle of the surface sweeping water can be adjusted according to actual conditions, the surface sweeping effect is excellent, and the surface sweeping water consumption can be saved. The unit surface water sweeping amount can be reduced from the traditional 1.5-2.5L/m 2 s to 0.15-0.4L/m 2 s, the cleaning time can be reduced, and the surface water sweeping amount can be saved by 85% -90%.
Description
Technical Field
The utility model belongs to the technical field of municipal water supply and sewage treatment, and particularly relates to a novel jet meter scavenging water backwashing filter.
Background
The V-shaped backwash filter tanks widely used in water works are all provided with surface sweeping facilities which are mainly used for flushing impurities remained on the surfaces of filter layers, and the surface sweeping water consumption accounts for 45% -50% of the backwash water consumption of the filter tanks. In the prior art, because the height of the meter sweep hole is set unsuitable, the spray angle of the meter sweep water is not right and the control of the meter sweep water quantity is rough, the meter sweep effect is poor, the meter sweep cannot be carried out comprehensively, and the meter sweep water quantity is huge.
Disclosure of utility model
Aiming at the defects existing in the prior art, the utility model provides the novel jet flow meter scavenging water back flushing filter, which adopts jet flow meter sweeping to flush impurities remained on the surface of a filter layer, can adjust the spraying angle of meter sweeping water according to actual conditions, has excellent meter sweeping effect, and can save a large amount of meter sweeping water consumption.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the novel jet meter scavenging water backwashing filter comprises a tank body with a filter layer, a jet meter sweeping pipe, a pressure meter sweeping water main pipe communicated with the jet meter sweeping pipe and a rotating mechanism for rotating the jet meter sweeping pipe;
The jet meter sweep pipe is arranged along the length direction of the tank body, a plurality of jet holes are uniformly arranged on the side wall of the jet meter sweep pipe at intervals along the length direction of the jet meter sweep pipe, and pressurized water sprayed by the jet holes is used for sweeping the upper surface of the filter layer.
Preferably, the rotating mechanism comprises a first conical gear, a limiting ring, a transmission rod, a second conical gear and a rotating disc, wherein the limiting ring is fixedly arranged on the inner side wall of the tank body, the transmission rod is rotatably inserted into the limiting ring, the first conical gear is sleeved on the outer side of the jet meter scanning pipe, the second conical gear is fixedly arranged at the bottom end of the transmission rod, the second conical gear is meshed with the first conical gear, and the rotating disc is fixedly arranged at the top end of the transmission rod.
Preferably, the outlet flow velocity of the jet hole is 2-25m/s.
Preferably, the diameter of the jet hole is 1-10mm.
Preferably, the distance between every two adjacent jet holes is 30-300mm.
Preferably, the jet flow surface sweeping strength of the jet flow hole on the upper surface of the filter layer is 0.05-1.0L/m 2 s.
Preferably, the support frame is arranged on the inner side wall of the tank body, the support frame comprises a first vertical plate, a horizontal plate, a clamping ring and at least two first fixing bolts, the first vertical plate is fixedly arranged on the inner side wall of the tank body, first bolt holes distributed along the vertical direction are formed in the side wall of the first vertical plate, at least two first fixing holes matched with the first bolt holes are formed in the side wall of the horizontal plate, one first fixing bolt is inserted into one first fixing hole and one first bolt hole at the same time, the clamping ring is fixedly arranged on the horizontal plate, the jet meter scanning tube is rotatably inserted into the clamping ring, through holes are formed in the clamping ring, locking bolts are connected in the through holes in a screwed mode, and the bottom ends of the locking bolts are in conflict with the side wall of the jet meter scanning tube.
Preferably, the support frame further comprises a second vertical plate and at least two second fixing bolts, second bolt holes distributed along the vertical direction are formed in the side wall of the second vertical plate, at least two second fixing holes matched with the second bolt holes are formed in the side wall of the horizontal plate, and the second fixing bolts are inserted into the second fixing holes and the second bolt holes at the same time.
Preferably, a plurality of support frames are uniformly arranged on the inner side wall of the tank body at intervals along the length direction of the jet flow meter scanning pipe.
Preferably, an H-shaped groove is arranged in the middle of the tank body, the filtering layer is divided into two parts by the H-shaped groove, and jet flow meter scanning pipes are arranged on inner side walls of two sides of the tank body.
Preferably, the height of the jet flow meter sweeping tube is the same as or 10-100mm higher than the height of the top end of the H-shaped groove.
Compared with the prior art, the utility model has the beneficial effects that:
1. According to the novel jet flow meter scavenging water backwashing filter, the jet flow meter sweeping is adopted to wash sundries remained on the surface of the filter layer, so that the meter sweeping effect is excellent, the meter sweeping water consumption can be saved, the jet angle of the meter sweeping water can be adjusted according to actual conditions, and the surface of the filter layer is comprehensively cleaned. The unit surface water sweeping amount can be reduced from the traditional 1.5-2.5L/m 2 s to 0.15-0.4L/m 2 s, and the surface water sweeping amount can be saved by 85% -90%.
2. The novel jet meter scavenging water backwashing filter provided by the utility model has the advantages that the H-shaped groove can be used for distributing water to the filtering layers at two sides, and the V-shaped grooves at two sides in the traditional filter are not required to be arranged, so that water distribution is facilitated, engineering cost can be saved, and construction difficulty can be reduced.
Drawings
FIG. 1 is a schematic diagram of the front structure of a novel jet meter scavenge water backwash filter provided by an embodiment of the utility model;
FIG. 2 is a schematic side view of a novel jet meter scavenge water backwash filter according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of the front structure of the relevant part of the rotating mechanism of the novel jet meter scavenge water backwash filter provided by the embodiment of the utility model;
FIG. 4 is a schematic diagram of a top view structure of a novel jet meter scavenge water backwash filter provided by an embodiment of the utility model;
fig. 5 is a schematic side view of a relevant part of a support frame of a novel jet meter scavenge water backwash filter according to an embodiment of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. A cell body; 2. a filter layer; 3. jet meter sweeping pipe; 4. a pressure gauge sweeps a water main pipe; 5. a support frame; 6. an H-shaped groove; 7. a rotating mechanism; 501. a first riser; 502. a second riser; 503. a horizontal plate; 504. a clasp; 505. a locking screw; 701. a first bevel gear; 702. a limiting ring; 703. a transmission rod; 704. a second bevel gear; 705. and rotating the disc.
Detailed Description
The present utility model will be described in further detail with reference to specific examples so as to more clearly understand the present utility model by those skilled in the art.
It should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, unless otherwise specifically indicated and defined. The specific meaning of such terms in this patent will be understood by those of ordinary skill in the art as the case may be.
As shown in figures 1-5, the novel jet surface scavenging water backwashing filter comprises a tank body 1 internally provided with a filter layer 2.
The filter layer 2 is mainly used for water treatment, after each filtering period is finished, more impurities remain on the upper surface of the filter layer 2 and are required to be washed, and the traditional back flushing filter mainly flows into the water meter to sweep through gravity, so that the water consumption is large, and the washing effect is poor.
In order to avoid the problems, the novel jet meter scavenging water backwashing filter provided by the embodiment comprises a tank body 1 internally provided with a filter layer 2, a jet meter sweeping pipe 3, a pressure meter sweeping water main pipe 4 communicated with the jet meter sweeping pipe 3 and a rotating mechanism 7 for rotating the jet meter sweeping pipe 3;
The jet meter sweep pipe 3 is arranged along the length direction of the tank body 1, a plurality of jet holes are uniformly arranged on the side wall of the jet meter sweep pipe 3 at intervals along the length direction, and the jet holes jet pressurized water for sweeping the upper surface of the filter layer 2.
Specifically, the water is swept to the manometer through the water sweeping main pipe 4 of the table that the pump is swept to the efflux table is provided to have certain pressure, the water main pipe 4 is swept to the manometer then is used for the efflux table is swept the pipe 3 and is provided the manometer and sweep water, and finally the table sweeps water and sprays through the efflux hole, thereby realizes the purpose of carrying out the sweeping treatment to the upper surface of filter layer 2.
The pump lift of the jet flow meter sweeping pump can be 15-40m, and the flow can be 30-100m 3/h.
However, the jet meter scanning tube 3 is usually preset, and the included angle between the jet hole and the horizontal plane is usually fixed, which cannot be adjusted during use. In this way, when the upper surface of the filter layer 2 is purged, the middle part area is far away from the jet flow meter-sweeping pipe 3, so that the meter-sweeping water pressure at the position is small, and the purging cannot be performed in time, which may cause that a large amount of impurities are accumulated in the middle part; or the surface sweeping water is located in a partial area right below the jet flow surface sweeping pipe 3, so that the surface sweeping water cannot be swept, and partial impurities can be accumulated after long-term use.
In order to avoid this problem, the present embodiment further includes a rotation mechanism 7 for rotating the jet meter-scanning tube 3.
The rotating mechanism 7 comprises a first conical gear 701, a limiting ring 702, a transmission rod 703, a second conical gear 704 and a rotating disc 705, wherein the limiting ring 702 is fixedly installed on the inner side wall of the tank body 1, the transmission rod 703 is rotatably inserted into the limiting ring 702, the first conical gear 701 is sleeved on the outer side of the jet meter scanning tube 3, the second conical gear 704 is fixedly installed at the bottom end of the transmission rod 703, the second conical gear 704 is meshed with the first conical gear 701, and the rotating disc 705 is fixedly installed at the top end of the transmission rod 703.
Through rotating transfer line 703, can drive second bevel gear 704 rotates, and then drives first bevel gear 701 rotates, and then makes efflux table sweeps pipe 3 and rotates, thereby can adjust the angle of efflux hole and horizontal plane changes the table and sweeps the injection direction of water, thereby realizes to the powerful washing of filter layer 2 upper surface different positions.
The pressure gauge water sweeping main pipe 4 and the jet flow gauge water sweeping pipe 3 can be connected through a hose, and therefore the jet flow gauge water sweeping pipe 3 is not affected when being rotated.
The rotating disc 705 is usually large in size, so that the rotating precision of the rotating disc is convenient to control, excessive rotation is prevented, and the rotating angle of the jet meter scanning tube 3 cannot be accurately controlled.
The rotating disc 705 can be marked with a graduated scale, so that a worker can observe the rotating amplitude conveniently and accurately adjust the spraying direction of the surface sweeping water.
Wherein, the height difference between the jet flow surface scanning tube 3 and the upper surface of the filter layer 2 can be 550mm. In other embodiments, the height of the jet meter-sweeping tube 3 may be adjusted according to the actual situation by combining the angle between the direction of the jet hole and the horizontal plane.
In order to further enhance the sweeping effect of the jet hole on the upper surface of the filter layer 2:
Wherein, the water outlet flow velocity of the jet hole can be 2-25m/s.
The diameter of the jet hole may be 1-10mm.
The distance between each adjacent two of the jet holes may be 30-300mm.
The jet flow surface sweeping strength of the jet flow holes on the upper surface of the filter layer 2 can be 0.05-1.0L/m 2 s.
The above-mentioned relevant parameters can be appropriately adjusted according to the actual situation.
In addition, the setting error of the surface scanning hole height of the traditional filter tank is often larger, and the surface scanning effect is possibly poor, so that the surface scanning water quantity is wasted.
In order to accurately position the height of the jet meter scanning pipe 3, in this embodiment, a support frame 5 is arranged on the inner side wall of the tank body 1, the support frame 5 comprises a first vertical plate 501, a horizontal plate 503, a clamping ring 504 and at least two first fixing bolts, the first vertical plate 501 is fixedly arranged on the inner side wall of the tank body 1, first bolt holes distributed along the vertical direction are formed in the side wall of the first vertical plate 501, at least two first fixing holes matched with the first bolt holes are formed in the side wall of the horizontal plate 503, one first fixing bolt is inserted into one first fixing hole and one first bolt hole at the same time, the clamping ring 504 is fixedly arranged on the horizontal plate 503, the jet meter scanning pipe 3 is rotatably inserted into the clamping ring 504, through holes are formed in the clamping ring 504, locking bolts 505 are screwed into the through holes, and the bottom ends of the locking bolts 505 are in conflict with the side wall of the jet meter scanning pipe 3.
Specifically, two first fixing holes on the same horizontal plane on the side wall of the horizontal plate 503 are aligned with two first bolt holes on the side wall of the first vertical plate 501, then the first fixing bolts are inserted into the aligned first fixing holes and the first bolt holes, the horizontal plate 503 and the first vertical plate 501 are fixedly connected through two points, and then the jet meter scanning tube 3 is fixed on the horizontal plate 503 through the clamping ring 504, so that the jet meter scanning tube 3 can be fixed.
When the height of the jet meter scanning pipe 3 needs to be adjusted, the first fixing bolt is detached, the horizontal plate 503 is moved up and down to a proper height, and the first fixing bolt is inserted into the aligned first fixing hole and the first bolt hole again, so that the height adjustment of the jet meter scanning pipe 3 can be completed.
When the jet meter scanning pipe 3 is required to be rotated, the locking screw 505 is loosened, and after the rotation is completed, the locking screw 505 is locked again.
The first riser 501 may be fixed on the inner sidewall of the tank body 1 by an expansion bolt.
The support frame 5 further comprises a second vertical plate 502 and at least two second fixing bolts, second bolt holes distributed along the vertical direction are formed in the side wall of the second vertical plate 502, second fixing holes matched with the second bolt holes are formed in the side wall of the horizontal plate 503, two second bolt holes and two second fixing holes are formed in the same horizontal plane, and the second fixing bolts are inserted into the second fixing holes and the second bolt holes at the same time.
Similarly, the second fixing bolts are inserted into the aligned second fixing holes and the second bolt holes at the same time, and are fixed at two points, so that the horizontal plate 503 and the second vertical plate 502 are fixedly connected. The second vertical plate 502 may further promote the limiting function on the jet meter scanning tube 3, and may also prevent the impact of the water flow on the clamping ring 504.
A plurality of supporting frames 5 are uniformly arranged on the inner side wall of the tank body 1 at intervals along the length direction of the jet flow surface scanning pipe 3. The plurality of supporting frames 5 can enable the jet meter scanning tube 3 to be more stable.
In addition, the inner side wall often is equipped with V type groove pond in traditional filtering pond, and V type groove pond not only is under construction difficulty. In order to avoid the above-mentioned problems, in this embodiment, as shown in fig. 2 and 4, an H-shaped groove 6 is provided in the middle of the tank body 1, the H-shaped groove 6 divides the filter layer 2 into two parts, and the jet meter-sweeping pipes 3 are provided on the inner side walls of the two sides of the tank body 1. The height of the jet flow meter scanning tube 3 is the same as or slightly higher than the height of the top end of the H-shaped groove 6 by 10-100mm.
Specifically, the H-shaped groove 6 is disposed along the length direction of the tank body 1, so that the filtering layer 2 can be divided into a left part and a right part, that is, two side walls of the H-shaped groove 6 respectively collide with the filtering layer 2 of the left part and the right part, so that water flowing out of the top end of the H-shaped groove 6 can smoothly fall into the two parts of the filtering layer 2. The upper notch of the H-shaped groove 6 can be communicated with the water inlet channel, so that the upper notch of the H-shaped groove 6 can be used for distributing water to the filter layer 2 on two sides, and the lower notch of the H-shaped groove 6 can be communicated with a backwash drain pipe, namely the lower notch of the H-shaped groove 6 can be used for backwash drain. Therefore, the V-shaped groove pool is not required to be arranged on the inner side wall of the pool body 1, water distribution is more facilitated, construction is more convenient, and cost is low.
In summary, the novel jet meter scavenging water backwashing filter provided by the embodiment adopts the jet of the pressurized water from the jet meter sweeping pipe 3, so that jet meter sweeping is realized, and the meter sweeping water quantity is greatly saved; the pressurized water can be supplied by a water outlet pressure pipe of a water plant, can be supplied by a water pump alone, and has controllable surface sweeping strength; the spraying angle of the water sweeping can be adjusted at any time according to the actual use condition, and all places can be comprehensively cleaned; meanwhile, the V-shaped groove of the traditional V-shaped groove pool can be canceled, water is distributed by the H-shaped groove 6 in the middle of the V-shaped groove pool, engineering cost is saved, and engineering construction difficulty is reduced.
Mechanisms, components, and members not described in the specific structure of the present utility model are all existing structures already existing in the prior art. Can be purchased directly from the market.
The foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the scope of the present utility model. 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 (10)
1. The novel jet meter scavenging water backwashing filter tank comprises a tank body (1) internally provided with a filter layer (2) and is characterized by further comprising a jet meter scavenging pipe (3), a pressure meter scavenging water main pipe (4) communicated with the jet meter scavenging pipe (3) and a rotating mechanism (7) for rotating the jet meter scavenging pipe (3);
The jet flow meter sweep pipe (3) is arranged along the length direction of the tank body (1), a plurality of jet flow holes are uniformly arranged on the side wall of the jet flow meter sweep pipe (3) at intervals along the length direction of the jet flow meter sweep pipe, and pressurized water sprayed out of the jet flow holes is used for sweeping the upper surface of the filter layer (2).
2. The novel jet meter scavenge water backwash filter according to claim 1, characterized in that the rotating mechanism (7) comprises a first conical gear (701), a limiting ring (702), a transmission rod (703), a second conical gear (704) and a rotating disc (705), wherein the limiting ring (702) is fixedly installed on the inner side wall of the tank body (1), the transmission rod (703) is rotatably inserted into the limiting ring (702), the first conical gear (701) is sleeved on the outer side of the jet meter sweep tube (3), the second conical gear (704) is fixedly installed at the bottom end of the transmission rod (703), the second conical gear (704) is meshed with the first conical gear (701), and the rotating disc (705) is fixedly installed at the top end of the transmission rod (703).
3. The novel jet surface scavenging water backwash filter according to claim 1 wherein the jet orifice has a water outlet flow rate of 2-25m/s; the diameter of the jet hole is 1-10mm.
4. A novel jet surface scavenger water backwash filter as defined in claim 1 with a distance between each adjacent two of said jet holes of 30-300mm.
5. The novel jet surface scavenge water backwash filter of claim 1, wherein jet surface sweep strength of the jet holes to the upper surface of the filter layer (2) is 0.05-1.0L/m 2 s.
6. The novel jet meter scavenge water backwash filter according to claim 1, characterized in that, be equipped with support frame (5) on cell body (1) inside wall, support frame (5) include first riser (501), horizontal plate (503), snap ring (504), two at least first fixing bolts, first riser (501) fixed mounting is in on cell body (1) inside wall, be equipped with the first bolt hole of arranging along vertical direction on first riser (501) lateral wall, be equipped with at least two on horizontal plate (503) lateral wall with first fixed orifices of first bolt hole looks adaptation, one first fixing bolt cartridge simultaneously first fixed orifices with one in the first bolt hole, snap ring (504) fixed mounting is in on horizontal plate (503), jet meter sweeps rotatable cartridge of pipe (3) is in snap ring (504), be equipped with the through-hole on snap ring (504), the through-hole spiro union has locking screw (505), the bottom that sweeps pipe (505) and the locking screw (3) contradicts with the lateral wall.
7. The novel jet flow meter scavenge water back flushing filter tank of claim 6, wherein the supporting frame (5) further comprises a second vertical plate (502) and at least two second fixing bolts, second bolt holes distributed along the vertical direction are formed in the side wall of the second vertical plate (502), at least two second fixing holes matched with the second bolt holes are formed in the side wall of the horizontal plate (503), and one second fixing bolt is inserted into one second fixing hole and one second bolt hole at the same time.
8. The novel jet meter scavenge water backwash filter of claim 7, wherein a plurality of support frames (5) are uniformly arranged on the inner side wall of the tank body (1) at intervals along the length direction of the jet meter sweep pipe (3).
9. The novel jet meter scavenge water backwash filter according to claim 1, wherein an H-shaped groove (6) is arranged in the middle of the tank body (1), the H-shaped groove (6) divides the filter layer (2) into two parts, and the jet meter scavenger pipe (3) is arranged on the inner side walls of the two sides of the tank body (1).
10. The novel jet meter scavenge water backwash filter of claim 9, wherein the height of the jet meter sweep pipe (3) is the same as or 10-100mm higher than the height of the top end of the H-shaped groove (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322344042.4U CN221014651U (en) | 2023-08-30 | 2023-08-30 | Novel jet flow meter scavenging water back flushing filter tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322344042.4U CN221014651U (en) | 2023-08-30 | 2023-08-30 | Novel jet flow meter scavenging water back flushing filter tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221014651U true CN221014651U (en) | 2024-05-28 |
Family
ID=91135259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322344042.4U Active CN221014651U (en) | 2023-08-30 | 2023-08-30 | Novel jet flow meter scavenging water back flushing filter tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221014651U (en) |
-
2023
- 2023-08-30 CN CN202322344042.4U patent/CN221014651U/en active Active
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