CN109520809A - A kind of Portable Automatic water filter - Google Patents
A kind of Portable Automatic water filter Download PDFInfo
- Publication number
- CN109520809A CN109520809A CN201910005836.3A CN201910005836A CN109520809A CN 109520809 A CN109520809 A CN 109520809A CN 201910005836 A CN201910005836 A CN 201910005836A CN 109520809 A CN109520809 A CN 109520809A
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- Prior art keywords
- staving
- cup
- pallet
- transmission mechanism
- piston rod
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000005070 sampling Methods 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 239000012528 membrane Substances 0.000 claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 238000006073 displacement reaction Methods 0.000 claims abstract description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 101150038956 cup-4 gene Proteins 0.000 description 12
- 238000001914 filtration Methods 0.000 description 11
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 238000000967 suction filtration Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- -1 permanganate index Chemical compound 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of Portable Automatic water filters, comprising: staving, staving bottom surface are equipped with transmission mechanism, and the drive control circuit of the control transmission mechanism；Pallet is parallel to staving sole arrangement in staving, and the pallet is transmitted mechanism manipulation and is displaced along staving axis direction；Specimen cup is placed on the upside of pallet, with pallet with respect to staving slide displacement；Sampling cup, bottom of a cup center is recessed the cavity of taper type, cavity top surface is disposed with filter hole, magnet pressure ring is connect with cavity top surface, magnet pressure ring bottom surface and piston rod one end are attracted, and piston rod is hollow structure, built-in iron hoop, the piston plate of the piston rod other end integrally connected and specimen cup inner circumferential interference fit, is connected to sampling cup in specimen cup by cavity top surface；The sampling cup bottom surface is detachably connected with staving apical margin by clamping structure.Timing controlled transmission mechanism starts and stops, and can effectively reduce the low problem of filter efficiency caused by filter membrane blocks.
Description
Technical field:
The invention belongs to monitoring water environment fields, relate generally to a kind of Portable Automatic water filter.
Background technique
Filter operation is commonly applied to during water quality detection.In general, shaking up direct point after water sampling and taking original
Sample is used to detect the contents level of pollutant in native state water body；Learn from else's experience 0.45 μm of membrane filtration water sample for detecting water body
The contents level of middle dissolved state pollutant.The detection involved in " water environment quality standard " (GB 3838-2002)
In mesh, soluble total nitrogen, total phosphorus, permanganate index, nitrate nitrogen, material parameters etc. will use filter operation.It is opening
When opening up this intermediate item, filtered sample amount required for single parameter is from several milliliters to 100mL etc.；Carry out an all events inspection
It surveys, using current main detection method, required sample size about 500mL.
The current main filtered sample by the way of filtering, by sample bottle (dress raw water sample), filtering table, bottle,suction, buffering
A few part compositions such as bottle, vacuum pump, can also be made of several parts such as Buchner funnel, bottle,suction, surge flask, vacuum pump.Each section
It is connected with silicone tube or plastic tube.In recent years, also have a filter device of multi-joint dress, but basic structure still with above-mentioned filter device
Do not change.This kind of filter device is suitable for using in laboratory, is limited it in field by factors such as place, power supply, workbenches
Substantially it is not available.
On the market, the relatively small portable Suction filtration device using integrated design, such as patent can also be bought
201720803156.2 technical solutions disclosed, this kind of device is by sample bottle (dress raw water sample), filtering table, bottle,suction, buffering
Several parts such as bottle, vacuum pump are integrated together, and increase the function such as battery and other miscellaneous functions such as pressure setting
Energy.Though this kind of device may be implemented field and filter operation, smoothly to filter, these devices because sample bottle be it is open,
Sample can splash out in the moving process of field, still need to work in the state of standing, because field work particularity its actually
And it is inconvenient.
Traditional water sample suction filtration device there are the shortcomings that mainly have: (1) need the biggish vacuum pump of power ratio and stable
Power supply；(2) workplace need to have operating platform；(3) filter residue is directly gathered on filter membrane, and filter membrane is easy blocking, water easily occurs
Spline filter is unsmooth；(4) it is easy to happen vacuum pump waterlogged damage etc.；(5) it works under stationary state.With traditional water sample suction filtration device
It compares, existing these disadvantages of Portable water sample Suction filtration device in market still all exist substantially, do not solve field behaviour fundamentally
The problem of work, it is more time-consuming.
It needs to cause filter efficiency low for water sample filtering device is not portable, filter membrane easily blocks in current monitoring water environment
Under, the easy waterlogged damage of vacuum pump, need the problems such as external power supply, design it is a kind of completely new, can be at water quality sampling scene, transport
On the way, experimental place can carry out water quality automatic fitration operation and not have to worry due to blocking more after not having to vacuum pump, dress sample
The Portable water sample filter device of filter membrane, integrated design is changed, thus in laboratory time before saving to water sample detection.
Summary of the invention
The object of the present invention is to provide a kind of Portable Automatic water filter, realize water quality sampling scene,
In transit, it is able to carry out automatic fitration operation after experimental place water sampling, does not have to vary, replace filter membrane etc. after filling sample,
Integrated design does not have to carry vacuum pump, saves the purpose for the operating time filtered to laboratory.
For overcome the deficiencies in the prior art, the technical scheme is that
A kind of Portable Automatic water filter, comprising:
Staving, staving bottom surface are equipped with transmission mechanism, and the drive control circuit of the control transmission mechanism, and are transmission
The battery of mechanism power supply；
Pallet is parallel to staving sole arrangement in staving, and the pallet is transmitted mechanism manipulation along staving axis direction
Displacement；
Specimen cup is placed on the upside of pallet, and staving inner circumferential clearance fit, with pallet with respect to staving slide displacement；
Sampling cup, bottom of a cup center are recessed the cavity of taper type, and cavity top surface is disposed with filter hole, magnet pressure ring with it is recessed
The connection of chamber top surface, magnet pressure ring bottom surface and piston rod one end are attracted, and piston rod is hollow structure, built-in iron hoop, for being attracted magnetic
Body pressure ring, the piston plate of the piston rod other end integrally connected and specimen cup inner circumferential interference fit, makes sampling cup pass through cavity
Top surface is connected in specimen cup；
The sampling cup bottom surface is detachably connected with staving apical margin by clamping structure.
Further, the magnet pressure ring includes cyclic annular magnetosphere and the grid for connecting cyclic annular magnetosphere inner circumferential, the magnet pressure
Also pressing has filter membrane between ring and piston rod one end.
Further, the clamping structure includes the clip-connecting rod for being arranged in staving apical margin, and sampling cup bottom surface is turned down to periphery
On piece and the matched blocked hole of clip-connecting rod are enclosed in enclosing piece and being arranged in for being formed.
Optionally, the clamping structure includes the screw thread for being arranged in staving inner circumferential and sampling cup periphery.
Further, the transmission mechanism includes the rack gear connecting with pallet vertical, is socketed on the tooth of stepper motor shaft end
Wheel, the wheel and rack engagement.
Optionally, the transmission mechanism includes the screw rod connecting with pallet vertical, the screw rod bushing being socketed on outside screw rod, socket
Gear in stepper motor shaft end, the gear are engaged with the gear ring of screw rod bushing periphery, and the screw rod bushing is fixed in staving.
Preferably, the piston rod is equipped with protrusion close to sampling cup one end periphery, and spring is placed on piston rod, and one end contradicts institute
Protrusion is stated, the other end contradicts the spring catch of connection cavity inner circumferential.
Further, the spring catch is threadedly coupled with cavity inner circumferential.
By Shangdi, single-chip microcontroller is set in the drive control circuit, transmission mechanism described in timing controlled starts and stops.This hair
It is bright use process is as follows: the sample that will be collected is packed into specimen cup after shaking up.Specimen cup is put into device staving, is successively installed
Piston, filter membrane, magnet pressure ring, spring, spring catch and sampling cup.Under the promotion of transmission mechanism, the specimen cup equipped with original sample is slow
Slow to be promoted, water sample enters sampling cup by filter membrane during specimen cup rises.
Inventive conception is that: the built-in rechargeable battery in staving can charge repeatedly；Built-in timing means, Ke Yishe
Determine transmission mechanism and starts and stops the time.Meeting nature during standing such as silt, suspended material sinks in water sample, and water sample is quiet
Set its upper epidermis silt after a period of time, suspended sediment concentration will be greatly reduced.And filter membrane is set to the top of water sample, it can be with
Effectively reduce the low problem of filter efficiency caused by filter membrane blocks；It is effective to solve without using vacuum pump and its corollary apparatus
It has determined external power supply, vacuum system water inlet, the problems such as not portable.It no longer needs to carry out other operations after dress sample.It can basis
Flexibly setting transmission mechanism starts (the i.e. sample sedimentation time, when suspended matter, mud time for Suspended Substance in Water Sample, sediment content height
Husky content when high the settable longer starting time settle sample sufficiently, Surface water sample suspended matter, sediment content are by abundant
A possibility that its concentration substantially reduces after sedimentation, and filter membrane is blocked is small to make filter efficiency that can be promoted；When suspended matter, silt contain
Settable shorter starting time when measuring low) and dwell time (filtered sample has been collected into the sample that can satisfy detection
Amount).
The present invention changes traditional filtered sample filter membrane mounting means and system operating mode, by filter membrane from must be placed in
The lower part (can be attached on filter membrane after the filterings such as suspended matter, silt sedimentation and block filter membrane, hinder filter effect) of raw water sample reaches
The effect of filtering is changed to be put into the surface layer of raw water sample, and (after the sedimentation such as suspended matter, silt, surface layer suspended matter, sediment content are aobvious
Decline is write, without being adhered to blocking filter membrane on filter membrane in filter process, it is ensured that filter effect is good)；By pumping vacuum, using negative
Pressure realizes that sample filtering is changed to push filters pressing, improves working efficiency.Water sample is filtered by this water sample filtering device, it can be ensured that
Water quality sampling scene, in transit, experimental place can carry out water quality automatic fitration operation and do not have to vacuum pump, dress sample after
It hands off, thus in laboratory time before saving to water sample detection.
Detailed description of the invention
Fig. 1 is 1 horizontal cross-section structure diagram of apparatus of the present invention embodiment；
Fig. 2 is the structural schematic diagram of the magnetic pressure ring of apparatus of the present invention；
Fig. 3 is 2 horizontal cross-section structure diagram of apparatus of the present invention embodiment；
Fig. 4 is the structural schematic diagram of clamping structure of the invention；
Fig. 5 is 3 horizontal cross-section structure diagram of apparatus of the present invention embodiment.
Specific embodiment
The contents of the present invention are described in further detail with reference to the accompanying drawing.
Embodiment 1
A kind of Portable type full-automatic water sample filtering device, including sampling cup 11, piston rod 10, piston plate 14, staving 3, sample
Product cup 4, transmission mechanism 5 and battery 13, sampling cup 11 are recessed taper type cavity 15 at bottom of a cup center, divide in cavity top surface 6
It is furnished with the filter hole 7 of connection cavity 15 and sampling cup 11, sampling cup 11 is detachably connected with 3 top of staving by clamping structure 2,
The clamping structure 2 can be the screw thread set on 11 bottom of a cup periphery of 3 inner circumferential of staving and sampling cup.
With reference to Fig. 1 and Fig. 2, as a kind of implementation, above-mentioned transmission mechanism 5 be may be set to be including stepper motor
17, lead screw 16, pallet 12, screw rod bushing 19, the connection of 17 shaft end of stepper motor and 19 periphery gear ring of screw rod bushing, 20 meshed gears 18,
Screw rod bushing 19 is displaced with the pallet 12 that the rotation driving of stepper motor 17 is connect with 16 one end of lead screw along the axis direction of staving 3, silk
Bar 16 and the rotation of pallet 12 connect, and 19 glasss of fixations of screw set are erected in staving 3, and 3 inner circumferential of staving, which is equipped with, prevents pallet 12
The raised line 21 of rotation, drive control circuit are connect with 17 signal of stepper motor, and battery 13 is used to power to transmission mechanism 5.
Side positioned at pallet 12 far from transmission mechanism 5, place with the specimen cup 4 of 3 clearance fit of staving, in specimen cup 4
It is inserted in the piston 100 with 4 inner circumferential transition fit of specimen cup, piston 100 includes piston rod 10 and piston plate 14,10 direction of piston rod
11 side of sampling cup, piston plate 14 are parallel to the arrangement of staving 3, and 14 center of piston plate is equipped with through-hole, and piston rod 10 is hollow structure,
Lower end is connected to piston plate 14 close to 4 side of specimen cup, and filter membrane 9 is closely pressed in built-in by iron hoop 91 built in upper end, magnet pressure ring 8
10 upper end of piston rod of iron hoop 91, the cavity top surface 6 of 10 upper end face sampling cup 11 of piston rod, magnet pressure ring 8 include cyclic annular magnetic
Enclose 81 and positioned at the grid 82 built in cyclic annular magnetosphere 81.
Cup lid 1 is stamped at the top of sampling cup 11, cup lid is equipped with balance pressure port 1.1.Piston plate 14 has certain thickness, and
It is coated with rubber layer, the outer diameter of piston plate 14 is made to be greater than the internal diameter of specimen cup 4, piston plate 14 and specimen cup 4 are interference fitted
Compression rubber layer seals 4 inner circumferential of specimen cup by piston plate 14.
Embodiment 2
With reference to Fig. 2~4, a kind of Portable type full-automatic water sample filtering device, including sampling cup 11, piston rod 10, piston plate
14, staving 3, specimen cup 4, transmission mechanism 5 and battery 13, sampling cup 11 are recessed taper type cavity 15 at bottom of a cup center,
The filter hole 7 of connection cavity 15 and sampling cup 11 is distributed in cavity top surface 6, and sampling cup 11 and 3 top of staving pass through clamping structure 2
It is detachably connected.Clamping structure 2 includes: to turn down formation outward along 11 bottom of a cup outer rim of sampling cup to enclose piece 2.1, is arranged along piece 2.1 is enclosed
Blocked hole 2.2, be arranged in the clip-connecting rod 2.3 of 3 apical margin of staving Yu 2.2 location matches of blocked hole, 2.3 head of clip-connecting rod is omited
Greater than the diameter of blocked hole 2.2, limitation sampling cup 11 is displaced relative to staving 3 after clip-connecting rod 2.3 passes through blocked hole 2.2.
As a kind of implementation, transmission mechanism 5 includes pallet 12, rack gear 16 and stepper motor 17,17 axis of stepper motor
End installation and 12 meshed gears 18 of rack gear, one end connecting trays 12 of the rack gear 16 far from stepper motor 17, keep pallet 12 parallel
In 3 bottom surface of staving, with 3 inner circumferential clearance fit of staving, stepper motor 17 rotates under the action of drive control circuit, drive rack
16 promotion pallets 12 are parallel to 3 bottom surface of staving, are displaced along 3 axis direction of staving, drive control circuit and 17 signal of stepper motor
Connection, battery 13 are used to power to transmission mechanism 5.
Side positioned at pallet 12 far from transmission mechanism 5, place with the specimen cup 4 of 3 clearance fit of staving, in specimen cup 4
It is inserted in the piston 100 with 4 inner circumferential transition fit of specimen cup, piston 100 includes piston rod 10 and piston plate 14,10 direction of piston rod
11 side of sampling cup, piston plate 14 are parallel to the arrangement of staving 3, and 14 center of piston plate is equipped with through-hole, and piston rod 10 is hollow structure,
Lower end is connected to piston plate 14 close to 4 side of specimen cup, and filter membrane 9 is closely pressed in built-in by iron hoop 91 built in upper end, magnet pressure ring 8
10 upper end of piston rod of iron hoop 91, the cavity top surface 6 of 10 upper end face sampling cup 11 of piston rod, magnet pressure ring 8 include cyclic annular magnetic
Enclose 81 and positioned at the grid 82 built in cyclic annular magnetosphere 81.
Cup lid 1 is stamped at the top of sampling cup 11, cup lid is equipped with balance pressure port 1.1.Piston plate 14 has certain thickness, and
It is coated with rubber layer, the outer diameter of piston plate 14 is made to be greater than the internal diameter of specimen cup 4, piston plate 14 and specimen cup 4 are interference fitted
Compression rubber layer seals 4 inner circumferential of specimen cup by piston plate 14.
Embodiment 3
Referring to Fig. 5, on the basis of embodiment 1 or 2,10 top periphery of piston rod is equipped with protrusion 92, and protrusion is settable
For rib, baffle ring 93 is threadedly coupled with 15 bottom inner circumferential of cavity, and spring 94 is placed between baffle ring 93 and rib 92, enhances piston
The extruding force on bar 10 top and magnet pressure ring 8.Ensure that 10 top of piston rod closely compresses magnet pressure ring 8 always, leakage does not occur.
Embodiment 4
On the basis of previous embodiment, single-chip microcontroller is set in the drive control circuit, it, can timing by being embedded in program
Start and stop transmission mechanism.Such as the technical solution that patent 205178927U is announced.
Water sample filter process of the invention is as follows: the program by setting drive control circuit, and setting transmission mechanism 5 starts
Time and starting duration.After transmission mechanism 5 starts, pallet 12 is pushed slowly to move up, specimen cup 4, which synchronizes, at this time moves up, water
Sample filters after passing through piston rod 10 through filter membrane 9, completes sample filtering into sampling cup 11.The institutes such as specimen cup 4 and piston rod 10
Have and is all made of inert material (polyethylene, tetrachloro-ethylene or similar material) with water sample contact portion.
Claims (10)
1. a kind of Portable Automatic water filter characterized by comprising
Staving, staving bottom surface are equipped with transmission mechanism, and the drive control circuit of the control transmission mechanism, and are transmission mechanism
The battery of power supply；
Pallet is parallel to staving sole arrangement in staving, and the pallet is transmitted mechanism manipulation and is displaced along staving axis direction；
Specimen cup is placed on the upside of pallet, and staving inner circumferential clearance fit, with pallet with respect to staving slide displacement；
Sampling cup, bottom of a cup center are recessed the cavity of taper type, and cavity top surface is disposed with filter hole, magnet pressure ring and cavity top
Face connection, magnet pressure ring bottom surface and piston rod one end are attracted, and piston rod is hollow structure, built-in iron hoop, for being attracted magnet pressure
Ring, the piston plate of the piston rod other end integrally connected and specimen cup inner circumferential interference fit, makes sampling cup pass through cavity top surface
It is connected in specimen cup；
The sampling cup bottom surface is detachably connected with staving apical margin by clamping structure.
2. water filter according to claim 1, which is characterized in that the magnet pressure ring includes cyclic annular magnetosphere and company
The grid of cyclic annular magnetosphere inner circumferential is connect, also pressing has filter membrane between the magnet pressure ring and piston rod one end.
3. water filter according to claim 1, which is characterized in that the clamping structure includes being arranged in staving top
The clip-connecting rod of edge, sampling cup bottom surface turned down to periphery to be formed enclose piece and be arranged in and enclose on piece and the matched blocked hole of clip-connecting rod.
4. water filter according to claim 1, which is characterized in that the clamping structure includes being arranged in staving
The screw thread in week and sampling cup periphery.
5. water filter according to claim 1, which is characterized in that the transmission mechanism includes connecting with pallet vertical
The rack gear connect is socketed on the gear of stepper motor shaft end, the wheel and rack engagement.
6. water filter according to claim 1, which is characterized in that the transmission mechanism includes connecting with pallet vertical
The screw rod connect, the screw rod bushing being socketed on outside screw rod are socketed on the gear of stepper motor shaft end, the gear and screw rod bushing periphery
Gear ring engagement, the screw rod bushing are fixed in staving.
7. water filter according to claim 6, which is characterized in that the staving inner circumferential has been evenly arranged raised line,
Raised line combines together with staving, for preventing pallet from rotating.
8. water filter according to claim 1, which is characterized in that the piston rod is close to sampling cup one end periphery
Equipped with protrusion, spring is placed on piston rod, and one end contradicts the protrusion, and the other end contradicts the spring catch of connection cavity inner circumferential.
9. water filter according to claim 8, which is characterized in that the spring catch and cavity inner circumferential screw thread connect
It connects.
10. water filter according to claim 1, which is characterized in that single-chip microcontroller is set in the drive control circuit,
Transmission mechanism described in timing controlled starts and stops.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005836.3A CN109520809A (en) | 2019-01-03 | 2019-01-03 | A kind of Portable Automatic water filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005836.3A CN109520809A (en) | 2019-01-03 | 2019-01-03 | A kind of Portable Automatic water filter |
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| CN109520809A true CN109520809A (en) | 2019-03-26 |
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| CN201910005836.3A Pending CN109520809A (en) | 2019-01-03 | 2019-01-03 | A kind of Portable Automatic water filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111085018A (en) * | 2019-12-30 | 2020-05-01 | 陕西博睿信息科技有限公司 | Filter for detecting water quality by using filter membrane method |
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