CN217391799U - Dirt-absorbing type micro-filter - Google Patents
Dirt-absorbing type micro-filter Download PDFInfo
- Publication number
- CN217391799U CN217391799U CN202220841756.9U CN202220841756U CN217391799U CN 217391799 U CN217391799 U CN 217391799U CN 202220841756 U CN202220841756 U CN 202220841756U CN 217391799 U CN217391799 U CN 217391799U
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- filter cylinder
- filter
- sewage suction
- soil pick
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000010865 sewage Substances 0.000 claims abstract description 60
- 239000002689 soil Substances 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 7
- 238000005381 potential energy Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 9
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 9
- 241001330002 Bambuseae Species 0.000 abstract description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 9
- 239000011425 bamboo Substances 0.000 abstract description 9
- 238000011001 backwashing Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Filtration Of Liquid (AREA)
Abstract
The utility model discloses a dirt-absorbing type microfilter, which comprises a filter cylinder which is horizontally placed and a dirt-absorbing device which is arranged in the filter cylinder, wherein the dirt-absorbing device comprises a dirt-absorbing pipe which is parallel to the axial direction of the filter cylinder and is always positioned above the inner part of the filter cylinder and is close to the inner wall of the filter cylinder; the side face of the sewage suction pipe, which is closest to the inner wall of the filter cylinder, is provided with a sewage suction port, one end of the sewage suction pipe is a closed end, the other end of the sewage suction pipe is a connecting end, and the connecting end is used for being connected with an air suction pump. The utility model discloses set up the soil pick-up pipe in straining a section of thick bamboo, be equipped with on the soil pick-up pipe and aim at the soil pick-up mouth of straining an inner wall, utilize the aspiration pump at the intraductal negative pressure that forms of soil pick-up, strain a section of thick bamboo surface that the soil pick-up mouth aimed at and carry out powerful soil pick-up cleanness, along with straining a section of thick bamboo rotation, the soil pick-up mouth sweeps strains an inner wall, and is whole clean, with strong points and do not keep the dead angle. Compared with a high-pressure water backwashing mode, the water source is saved.
Description
Technical Field
The utility model belongs to the technical field of water treatment, concretely relates to dirt suction type microstrainer.
Background
At present, in the market, a micro-filter is mostly adopted for the treatment of the aquaculture water, and the micro-filter has a plurality of defects when in use.
First, the micro-filter consumes high energy and has high operation cost. When the micro-filter operates, two motors are required to cooperate, one motor drives the filter screen to rotate to filter and remove impurities from the water body, and the other motor pumps high-pressure water to backwash the filter screen, so that the filter screen is prevented from being blocked by dirt, and the operation of the micro-filter is maintained.
Secondly, the filter screen is cleaned by adopting a high-pressure water backwashing method, so that a large amount of water resources are wasted.
Therefore, a new method is sought for realizing energy conservation and emission reduction and reducing water treatment cost and solving the existing problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a dirt suction type micro-filter aiming at the current deficiency.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a dirt-suction type microfilter is characterized by comprising a filter cylinder which is horizontally placed and a dirt suction device which is arranged in the filter cylinder, wherein the dirt suction device comprises a dirt suction pipe which is arranged in parallel with the axial direction of the filter cylinder and is always positioned above the inner part of the filter cylinder and close to the inner wall of the filter cylinder; the side face of the sewage suction pipe, which is closest to the inner wall of the filter cylinder, is provided with a sewage suction port, one end of the sewage suction pipe is a closed end, the other end of the sewage suction pipe is a connecting end, and the connecting end is used for being connected with an air suction pump.
Preferably, the filter cartridge further comprises a filter cartridge frame, wherein the filter cartridge frame comprises an end disc and a bracket which are fixedly connected with each other;
the two ends of the filter cylinder are open, the end discs are detachably connected to the two ends of the filter cylinder in a sealing manner, and the connecting end of the sewage suction pipe penetrates out of the end discs;
the support comprises an inner concave arc-shaped plate, the inner concave arc-shaped plate is clamped on the outer side face of the filter cylinder, and balls are arranged in the contact face of the inner concave arc-shaped plate and the filter cylinder.
Preferably, one or more connecting ports are formed on the end disc.
Preferably, the sewage suction port is a long groove arranged parallel to the axis of the sewage suction pipe, or the sewage suction port is a plurality of holes arranged parallel to the axis of the sewage suction pipe.
Preferably, the sewage suction device further comprises a separation scraper and a sewage collection groove which are arranged on one side of the sewage suction pipe; the separation scraper is parallel to the sewage suction pipe, the upper side edge of the separation scraper is close to the inner wall of the filter cylinder, the lower side edge of the separation scraper is detachably connected with the sewage collecting groove, one end of the sewage collecting groove is closed, and the other end of the sewage collecting groove penetrates out of the end disc.
Preferably, the water rotating device comprises a box body, a vane type rotating disc and a transmission device;
the blade type rotating disc is arranged in the box body, and the blade type rotating device is provided with an output shaft penetrating out of the box body;
the box body is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is positioned above the blade type rotating device, the blade type rotating device is driven to rotate by water inlet kinetic energy and potential energy, and the water outlet pipe is connected to the filter cartridge end disc connecting port;
the transmission device converts the power output by the transmission shaft into power for driving the filter cartridge to rotate.
Preferably, a water level detection switch is arranged inside the filter cylinder, is fixed on the end disc and is connected with the air suction pump through a signal line;
and/or the air pump is provided with a timing switch which can turn on and off the air pump at regular time.
Preferably, a water storage tank is arranged below the sewage suction type micro-filter, the water storage tank is provided with a water outlet, and the water body purified by the sewage suction type micro-filter converges to the water storage tank.
The technical scheme can obtain the following beneficial effects:
(1) the utility model discloses set up the soil pick-up pipe in straining a section of thick bamboo, be equipped with on the soil pick-up pipe and aim at the soil pick-up mouth of straining an inner wall, utilize the aspiration pump at the intraductal negative pressure that forms of soil pick-up, strain a section of thick bamboo surface that the soil pick-up mouth aimed at and carry out powerful soil pick-up cleanness, along with straining a section of thick bamboo rotation, the soil pick-up mouth sweeps strains an inner wall, and is whole clean, with strong points and do not keep the dead angle. Compared with a high-pressure water backwashing mode, the water source is saved.
(2) The bracket supports the filter screen cylinder, and the end disc is connected to the end surface of the filter cylinder in a sealing way and does not rotate along with the filter cylinder; in addition, the end disc and the filter cartridge can be easily disassembled, and the filter cartridges with different filter screens can be conveniently replaced.
(3) The end disc does not rotate along with the filter cylinder, but the end of the filter cylinder can be well sealed, water can enter a connecting port on the end disc, and dirt can be timely discharged from the connecting port of the end disc.
(4) The kinetic energy and the potential energy of water are used for driving the filter cylinder to rotate, external force drive is not needed, and energy is saved and consumption is reduced.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic view of a filter cartridge according to the present invention.
Fig. 3 is a schematic view of the sewage suction pipe of the present invention.
Fig. 4 is a schematic view of the bracket of the present invention.
Fig. 5 is a schematic view of a filter cartridge and end disc of the present invention.
Fig. 6 is a schematic cross-sectional view of the filter cartridge of the present invention.
Fig. 7 is a schematic view of the vane-type rotating disc of the present invention.
In the figure:
1. the device comprises a water pump 21, a box body 211, a water inlet pipe 212, a water outlet pipe 22, a blade type rotating disk 221, an output shaft 222, a disk shaft 223, blades 23, a transmission device 231, a first gear 232, a second gear 3, an end disk 31, a connecting port 4, a support 41, an inner concave arc-shaped plate 5, a filter cartridge 51, an end ring 52, a filter screen 6, a water storage tank 8, an air suction pump 9, a water level detection switch 10, a sewage suction pipe 101, a sewage suction port 11, a separation scraper 12 and a sewage collecting tank.
Detailed Description
The invention will be further explained with reference to the drawings:
as shown in fig. 1, the utility model discloses a dirt-suction type micro-filter, which comprises a filter cylinder 5 horizontally placed and a dirt-suction device internally arranged in the filter cylinder 5.
Referring to fig. 2, the filter cartridge 5 is cylindrical, two ends of the filter cartridge are open, end rings 51 are arranged at the ends of the filter cartridge, the two end rings 51 are connected through 4 long strip-shaped brackets, and an annular filter screen 52 is arranged in each bracket. The end ring 51, the elongated bracket and the filter screen 52 are all made of stainless steel and can be used in fresh water or seawater environment. The meshes of the filter screen can be 48, 65, 100, 150, 200 and 250 meshes, and can be selected according to the requirement of purified water.
As shown in fig. 3, the dirt suction device includes a dirt suction pipe 10, the dirt suction pipe 10 extends in parallel with the axial direction of the filter cartridge 5 and has the same length as the filter cartridge 5, the dirt suction pipe 10 does not rotate with the filter cartridge 5, and is always located above the inside of the filter cartridge 5 and close to the inner wall of the filter cartridge 5; a sewage suction port 101 is formed in the side face, closest to the inner wall of the filter cylinder 5, of the sewage suction pipe 10, one end of the sewage suction pipe 10 is a closed end, the other end of the sewage suction pipe is a connecting end, and the connecting end is used for connecting the air suction pump 8 and discharging sewage. In the using process, the filter cylinder 5 rotates, the sewage suction pipe 10 is fixed, and the sewage suction pipe 10 finishes comprehensive sewage suction and cleaning of the inner wall of the filter cylinder once the filter cylinder 5 rotates for one circle. Compared with a back-flushing type microfiltration machine, the device saves water resources, has strong pertinence and does not leave dead angles.
In this embodiment, the dirt suction port 101 is an elongated slot formed parallel to the axis of the dirt suction pipe, the elongated slot has a width of 1.5mm and a length of 50cm, and when the dirt suction device works, the narrow and long dirt suction port forms a strong suction force on the inner wall of the filter screen, which is beneficial to adsorbing dirt from the filter screen.
In other embodiments, the sewage suction port is a plurality of holes arranged along the axis of the parallel sewage suction pipe, which is also within the protection scope of the present invention.
As shown in fig. 4 and 5, the micro-filter further includes a filter cartridge holder, and the filter cartridge holder includes an end disc 3 and a bracket 4 fixedly connected to each other.
The two ends of the filter cylinder 5 are arranged in an open mode, the end disc 3 is detachably connected to the two ends of the filter cylinder 5 in a sealing mode, when the filter cylinder 5 rotates, the end disc 3 is connected with the filter cylinder 5 in a sealing mode but does not rotate along with the filter cylinder 5, the end disc 3 and the filter cylinder 5 can be detached quickly and easily, and filter cylinders with different filter screens can be replaced conveniently. The end disc 3 is slightly larger than the diameter of the end ring of the filter cylinder 5, and the end disc 3 can cover the end ring of the filter cylinder 5 to ensure the sealing performance. One or more connecting ports 31 are arranged on the end disc 3 at a position 5CM above the end disc to allow the pipeline to pass through, and when the water level in the filter cartridge is too high, the water level can also be used as an overflow port, wherein the connecting end of the sewage suction pipe 10 penetrates out of the end disc 3 through the connecting ports 31.
The cartridge is supported by a bracket 4. The support 4 comprises an inner concave arc-shaped plate 41 which is clamped on the end ring 51 on the lower side surface of the filter cylinder 5, the central angle corresponding to the inner concave arc-shaped plate 41 is about 120 degrees, and balls are arranged on the contact surface of the inner concave arc-shaped plate 41 and the end ring 51 of the filter cylinder, so that the filter cylinder 5 can be easily rotated under the support.
In addition, as shown in fig. 6, the dirt suction device further includes a separation scraper 11 and a dirt collection tank 12 provided on one side of the dirt suction pipe 10; the separation scraper blade 11 is parallel to the sewage suction pipe 10, the upper side edge is close to the inner wall of the filter cylinder 5, the lower side edge is detachably connected with the sewage collection groove 12, one end of the sewage collection groove 12 is sealed, the other end penetrates out of the end disc through the connecting port 31, and the collected sewage is discharged from the filter cylinder 5. When straining a section of thick bamboo 5 and rotating, the separation scraper blade 11 that is located the place ahead goes up the side and strains 5 inner walls and paste mutually almost, can scrape most filth, and the filth of scraping off can flow into dirt collecting groove 12 along separation scraper blade 11, and the rethread end dish 3 connector 31 discharges outside straining a section of thick bamboo 5, remains a small amount of filth on the filter screen this moment, and the filth of jam on the filter screen mesh can be inhaled to soil pick-up pipe 10 and the interior discharge of soil pick-up pipe 10 is strained a section of thick bamboo 5.
In the aspect of power, the micro-filter is not driven by a motor, but is driven by the kinetic energy and potential energy of inlet water.
Specifically, the driving device of the micro-filter adopts a water rotating device which comprises a box body 21, a vane type rotating disc 22 and a transmission device 23.
The vane type rotating disc 22 is arranged in the box body 21 and is provided with an output shaft 221 which penetrates out of the box body 21; the water inlet pipe 211 and the water outlet pipe 212 are arranged on the box body 21, the water inlet pipe 211 is positioned above the blade type rotating device 22, the blade type rotating device 22 is driven to rotate through the falling potential energy and the kinetic energy of the inlet water, as shown in fig. 7, the blade type rotating device 22 is horizontally arranged and comprises a disc shaft 222 and blades 223 arranged around the circumference of the disc shaft 222, when a water body falls from top to bottom, the water body falls on the upper blades 223 or between the blades 223, the blade type rotating device 22 rotates under the impact and the gravity of the water to drive the output shaft 221 to rotate, and the water outlet pipe 212 is connected to the filter cartridge end disc 3.
The transmission device 23 includes a first gear 231 and a second gear 232 which are engaged with each other, the first gear 231 is mounted on the output shaft 221, the second gear 232 is coaxially mounted on the periphery of the filter cartridge 5, the diameter of the second gear on the filter cartridge 5 is several times of the diameter of the first gear, the vane type rotating device drives the first gear to rotate for several circles, the second gear rotates for one circle, for example, the diameter of the second gear is 30 times of the diameter of the first gear, that is, the vane type rotating disk rotates for 30 circles, and the filter screen cylinder rotates for 1 circle.
In other embodiments, the transmission device may also be in the form of belt transmission, chain transmission, etc., as long as the power output by the transmission shaft can be converted into the power for driving the filter cartridge to rotate, which is all within the protection scope of the present invention.
The water pump 1 pumps water into the water tank 21, the vane type rotating disc 22 is driven to rotate by utilizing potential energy and kinetic energy, the first gear 231 rotates along with the rotation, and the filter cartridge 5 rotates along with the rotation; the water outlet pipe 212 is connected to the connecting port 31 on the end disc 3, and water enters the filter cartridge 5 for filtration along the water outlet pipe 212.
It is worth mentioning that a water level detection switch 9 is arranged inside the filter cartridge 5, and the water level detection switch 9 is fixed on the end disc 3 and connected with the air pump through a signal line 91 for starting the air pump 8.
When the micro-filter works, along with more and more filth in the filter cylinder 5, meshes in the filter screen 52 are blocked, the water level in the filter cylinder 5 rises, and when the water level reaches the position of the water level detection switch 9, the switch is changed from a closed state to an open state, the external air suction pump 8 is started, automatic dirt suction is performed, so that the micro-filter is more energy-saving and environment-friendly.
Meanwhile, a timing switch can be set for the air pump, and the air pump equipment is automatically opened and closed at intervals, so that intelligent control is realized.
A water body is pumped in from the water inlet pipe 211 of the box body, the kinetic energy and potential energy of water flow are utilized to drive the blade type rotating disc 22 to rotate, further, the kinetic energy is output outwards through the output shaft 221, the first gear 231 and the second gear 232 are driven to rotate, and the filter cartridge 5 rotates along with the second gear 232; on the other hand, the water flows into the filter cartridge 5 from the tank 21 through the outlet pipe 212, the impurities are filtered by the filter cartridge filter screen 52, and the purified water flows out of the filter cartridge 5. The water body continuously enters the water tank 21, the filter cartridge 5 is driven to rotate, and then the water body flows into the filter cartridge 5, and due to the fact that the filter cartridge 5 is in a continuous rotating state, the filter screens 52 at all positions in the filter cartridge 5 can be in contact with the water body to perform filtering work. In the rotation process of the filter cylinder 5, the upper side edge of the separation scraper blade 11 continuously scrapes off dirt on the inner wall of the filter cylinder 5, most of the dirt on the inner wall of the filter cylinder 5 is cleaned, and then the dirt is collected in the dirt collection groove 12 and is discharged. When the dirt which cannot be removed by the separating scraper is accumulated continuously to block the filter screen of the filter cylinder, the speed of filtering water in the filter cylinder 5 is reduced, the internal water level is increased continuously, when the preset threshold value in the water level detection switch 9 is reached, the air suction pump 8 is started, the dirt suction pipe 10 starts to suck the dirt on the inner wall of the filter cylinder 5, the dirt is sucked into the dirt suction pipe 10 and is discharged out of the filter cylinder 5, the filter screen 52 of the filter cylinder is cleaned, the water level in the filter cylinder is reduced, and then the filtering work can be carried out continuously.
With continued reference to fig. 1, the dirt-suction micro-filter further comprises a water storage tank located below the filter cartridge, the water pump 1 pumps water into the filter cartridge 5, the water body filtered by the filter cartridge 5 flows into the water storage tank 6, and the water outlet 61 is arranged on the water storage tank 6, so that the water body can be collected and discharged in a planned manner.
The above description is the preferred embodiment of the present invention, and for those skilled in the art, modifications of the various equivalent forms of the present invention are within the scope of the appended claims of the present application without departing from the principle of the present invention.
Claims (8)
1. The utility model provides a soil pick-up formula microstrainer which characterized in that: the sewage suction device comprises a sewage suction pipe, wherein the sewage suction pipe is arranged in parallel with the filter cylinder in the axial direction and is always positioned above the inner part of the filter cylinder and close to the inner wall of the filter cylinder; the side face of the sewage suction pipe, which is closest to the inner wall of the filter cylinder, is provided with a sewage suction port, one end of the sewage suction pipe is a closed end, the other end of the sewage suction pipe is a connecting end, and the connecting end is used for being connected with an air suction pump.
2. A soil pick-up microfilter as in claim 1, wherein: the filter cartridge rack comprises an end disc and a bracket which are fixedly connected with each other;
the two ends of the filter cylinder are open, the end discs are detachably connected to the two ends of the filter cylinder in a sealing manner, and the connecting end of the sewage suction pipe penetrates out of the end discs;
the support comprises an inner concave arc-shaped plate, the inner concave arc-shaped plate is clamped on the outer side face of the filter cylinder, and balls are arranged in the contact face of the inner concave arc-shaped plate and the filter cylinder.
3. A soil pick-up filter as claimed in claim 2, wherein: one or more connecting ports are formed in the end disc.
4. A soil pick-up microfilter as claimed in claim 1, wherein: the sewage suction port is a long groove which is arranged in parallel with the axis of the sewage suction pipe, or the sewage suction port is a plurality of holes which are arranged in parallel with the axis of the sewage suction pipe.
5. A soil pick-up filter as claimed in claim 2, wherein: the sewage suction device also comprises a separation scraper and a sewage collection groove which are arranged on one side of the sewage suction pipe; the separation scraper is parallel to the sewage suction pipe, the upper side edge of the separation scraper is close to the inner wall of the filter cylinder, the lower side edge of the separation scraper is detachably connected with the sewage collecting groove, one end of the sewage collecting groove is closed, and the other end of the sewage collecting groove penetrates out of the end disc.
6. A soil pick-up filter as claimed in claim 3, wherein: the water rotating device comprises a box body, a blade type rotating disc and a transmission device;
the blade-type rotating disc is arranged in the box body, and the blade-type rotating device is provided with a transmission shaft which penetrates out of the box body;
the box body is provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is positioned above the blade type rotating device, the blade type rotating device is driven to rotate by the kinetic energy and the potential energy of water inflow, and the water outlet pipe is connected to the end disc connecting port;
the transmission device converts the power output by the transmission shaft into power for driving the filter cartridge to rotate.
7. A soil pick-up microfilter as in claim 2, wherein: a water level detection switch is arranged in the filter cylinder, is fixed on the end disc and is connected with the air suction pump through a signal wire;
and/or the air pump is provided with a timing switch which can turn on and off the air pump at regular time.
8. A soil pick-up microfilter as claimed in claim 1, wherein: the water purifier further comprises a water storage tank positioned below the filter cylinder, the water storage tank is provided with a water outlet, and the water body purified by the filter cylinder is converged to the water storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220841756.9U CN217391799U (en) | 2022-04-12 | 2022-04-12 | Dirt-absorbing type micro-filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220841756.9U CN217391799U (en) | 2022-04-12 | 2022-04-12 | Dirt-absorbing type micro-filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217391799U true CN217391799U (en) | 2022-09-09 |
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ID=83141072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220841756.9U Active CN217391799U (en) | 2022-04-12 | 2022-04-12 | Dirt-absorbing type micro-filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN217391799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117244300A (en) * | 2023-11-14 | 2023-12-19 | 中煤（北京）印务有限公司 | Printing wastewater control discharge treatment equipment |
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2022
- 2022-04-12 CN CN202220841756.9U patent/CN217391799U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117244300A (en) * | 2023-11-14 | 2023-12-19 | 中煤（北京）印务有限公司 | Printing wastewater control discharge treatment equipment |
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