CN114515468A - Combined vacuum oil filter - Google Patents
Combined vacuum oil filter Download PDFInfo
- Publication number
- CN114515468A CN114515468A CN202111620761.3A CN202111620761A CN114515468A CN 114515468 A CN114515468 A CN 114515468A CN 202111620761 A CN202111620761 A CN 202111620761A CN 114515468 A CN114515468 A CN 114515468A
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- 238000001816 cooling Methods 0.000 claims abstract description 52
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 239000003129 oil well Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 90
- 239000002826 coolant Substances 0.000 claims description 14
- 238000011045 prefiltration Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 2
- 239000000110 cooling liquid Substances 0.000 description 10
- 238000007664 blowing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
The invention discloses a combined vacuum oil filter, which comprises a fine filter component, a cooling component, a vacuum air pump, a heating component, a vacuum tank component, a primary filter component, an oil well pump and a connecting base, wherein the primary filter component is arranged at one end of the upper surface of the connecting base, the fine filter component, the cooling component, the vacuum air pump, the vacuum tank component and the oil well pump are arranged on the upper surface of the connecting base, the heating component is arranged on the outer side of the vacuum tank component, the inlet of the heating component is connected with the outlet of the primary filter component through a guide pipe, the outlet of the heating component is connected with the inlet of the vacuum tank component through a guide pipe, the air outlet at the upper end of the vacuum tank component is connected with the air inlet of the vacuum air pump through a guide pipe, the combined vacuum oil filter has simple structure and convenient operation, not only facilitates the assembly of the device, but also increases the number of the fine filter devices, the use is more flexible, and convenience is provided for people.
Description
Technical Field
The invention relates to the technical field of vacuum oil filters, in particular to a combined vacuum oil filter.
Background
The vacuum oil purifier is also called as a vacuum high-efficiency oil filter, an oil filter and an oil purifier, and has the characteristics of small volume, light weight, convenient movement, low working noise, long continuous working time, stable performance, convenient operation and the like. The oil filter on the existing market generally comprises a vacuum heating tank fine filter, a condenser, a primary filter, a water tank, a vacuum pump, an oil discharge pump and an electric cabinet, the working principle is that the vacuum pump pumps out air in the vacuum tank to form vacuum, external oil enters the primary filter through an inlet pipeline under the action of atmospheric pressure to remove larger particles, then enters the heating tank, oil at 40-75 ℃ after being heated passes through an automatic oil float valve, and the valve is automatically controlled to balance the oil mass entering the vacuum tank. The oil after being heated is separated into semi-fog through the flying rotation of the spraying wings, and the water in the oil is evaporated into water vapor and is continuously sucked into the condenser by the vacuum pump. The water vapor entering the condenser is cooled and then returns to water to be discharged, the oil liquid in the vacuum heating tank is discharged into a fine filter by an oil discharge pump, and particulate impurities are filtered out by an oil filter paper or a filter element, so that the whole process of rapidly removing the impurities, moisture and gas in the oil by the vacuum oil filter is completed, and clean oil is discharged out of the vacuum oil filter from an oil outlet. However, the existing device has a complex structure and inconvenient assembly, cannot be adjusted according to requirements, is inconvenient to heat oil, has poor cooling effect, and cannot meet the requirements of people.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the existing defects, and provide a combined vacuum oil filter which is simple in structure and easy and convenient to operate, not only facilitates the assembly of the device, but also can increase the number of fine filter devices to be installed, is more flexible to use, provides convenience for people, and can effectively solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a combined vacuum oil filter comprises a fine filter component, a cooling component, a vacuum air pump, a heating component, a vacuum tank component, a primary filter component, an oil well pump and a connecting base, wherein the primary filter component is arranged at one end of the upper surface of the connecting base, the fine filter component, the cooling component, the vacuum air pump, the vacuum tank component and the oil well pump are arranged on the upper surface of the connecting base, the heating component is arranged on the outer side of the vacuum tank component, the inlet of the heating component is connected with the outlet of the primary filter component through a guide pipe, the outlet of the heating component is connected with the inlet of the vacuum tank component through a guide pipe, the air outlet at the upper end of the vacuum tank component is connected with the air inlet of the vacuum air pump through a guide pipe, the air outlet at the lower end of the vacuum tank component is connected with the inlet of the oil well pump through a guide pipe, the outlet of the oil pump is connected with the inlet of the fine filter component through a guide pipe.
Further, the prefilter subassembly includes that two settings are equipped with the prefilter body between the upper end of two U type supports at the U type support of connecting the base upper surface, can carry out primary filter to liquid through the prefilter body to this solid particle to in the liquid filters.
Further, heating element is including setting up the annular shell in the vacuum tank subassembly outside, and the inboard of annular shell is equipped with the hot plate to the inside of annular shell is equipped with helical heat exchange tube of helical structure, can carry out the heat transfer to the filterable liquid of first time through helical heat exchange tube, can heat helical heat exchange tube through the hot plate, heats liquid with this.
Furthermore, the vacuum tank assembly comprises a tank body, a pressure sensor is arranged on the top surface inside the tank body, a sprinkler head is arranged at the upper end of the tank body, an air outlet is formed in the center of the upper end of the tank body, a liquid outlet is formed in the center of the lower end of the tank body, the gas in the tank body can be extracted through a vacuum air pump, negative pressure vacuum is formed inside the tank body, the liquid can be sucked into the tank body, the liquid can be sprayed into the tank body through the sprinkler head, moisture in the liquid is evaporated through heated oil, the gas is extracted into the cooling assembly through the vacuum air pump, the pressure inside the tank body can be detected through the pressure sensor during vacuumizing, and therefore detection is more convenient.
Further, cooling unit includes the cooling tank, is equipped with the cooling tube in the middle of the inside of cooling tank, and the cooling tube divide into cold district chamber and coolant liquid cavity with the inside of cooling tank, and the inside in cold district chamber is equipped with the spiral gas blow pipe, and the spiral gas blow pipe outside evenly is equipped with the air jet, the upper end and the lower extreme of coolant liquid cavity are equipped with coolant liquid export and coolant liquid import respectively, and the upper end in cold district chamber is equipped with out the gas spare, and the lower extreme in cold district chamber is equipped with liquid delivery port, can spout the cooling tube inboard with the gas of vacuum aspiration pump extraction through the spiral gas blow pipe, can hold the coolant liquid through the coolant liquid cavity to can cool off the outside of cooling tube through the coolant liquid, can carry out the pressure release to the cooling tank inside through the gas spare of giving vent, can derive the liquid that cools off through the liquid delivery port on the cold district chamber.
Furthermore, the air outlet piece comprises an air outlet pipe, and a pressure relief valve is arranged on the air outlet pipe.
Furthermore, the fine filtration component comprises a flow distribution box body, a liquid outlet column and a liquid inlet column are uniformly arranged on the flow distribution box body, the liquid outlet column corresponds to the liquid inlet column one to one, manual valves are arranged on the liquid outlet column and the liquid inlet column, a fine filter is arranged between the corresponding liquid outlet column and the upper end of the liquid inlet column, fine filtration can be performed on liquid through the fine filter, the number of the fine filters can be installed according to requirements, and therefore the assembly is more convenient.
Further, the flow distribution box body comprises a supporting box body, a partition plate is arranged in the middle of the inside of the supporting box body, the partition plate divides the inside of the supporting box body into a flow distribution cavity and a flow collecting cavity, one end of the flow distribution cavity is provided with a liquid inlet, one end of the flow collecting cavity is provided with a liquid outlet, liquid can be distributed to each fine filter through the flow distribution cavity, and the liquid after fine filtration can be collected and then guided out through the flow collecting cavity.
Compared with the prior art, the invention has the beneficial effects that: the liquid can be finely filtered through the fine filter, the number of the fine filters can be installed according to requirements, so that the assembly is more convenient, the gas pumped by the vacuum air pump can be sprayed to the inner side of the cooling pipe through the spiral air blowing pipe, the cooling liquid can be contained through the cooling liquid cavity, the outer side of the cooling pipe can be cooled through the cooling liquid, the pressure inside the cooling tank can be relieved through the air outlet piece, the cooled liquid can be led out through the liquid outlet on the cold area cavity, the liquid can be sprayed into the tank body through the spraying head, the moisture in the liquid is evaporated through the heated oil, the gas is pumped into the cooling component through the vacuum air pump, the pressure inside the tank body can be detected through the pressure sensor during the vacuum pumping, so that the detection is more convenient, the combined type vacuum oil filter has a simple structure and is simple and convenient to operate, so that the assembly of the device is more convenient, and the number of the fine filtering devices needing to be installed is increased, the use is more flexible, and convenience is provided for people.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic structural view of the flow distribution box of the present invention;
FIG. 4 is a schematic view of the vacuum canister assembly of the present invention;
FIG. 5 is a schematic view of the internal structure of the cooling module of the present invention.
In the figure: 1 fine filter component, 11 shunt box body, 12 manual valve, 13 fine filter, 2 cooling component, 21 air outlet component, 22 cooling tank, 23 cooling pipe, 24 spiral air blowing pipe, 3 vacuum air pump, 4 heating component, 41 heating plate, 42 spiral heat exchange pipe, 43 annular shell, 5 vacuum tank component, 51 pressure sensor, 52 sprinkler head, 53 tank body, 6 prefilter component, 61 prefilter body, 62U-shaped support, 7 oil-well pump, 8 connection base.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a combined vacuum oil filter comprises a fine filter component 1, a cooling component 2, a vacuum air pump 3, a heating component 4, a vacuum tank component 5, a prefilter component 6, an oil well pump 7 and a connecting base 8, wherein the prefilter component 6 is arranged at one end of the upper surface of the connecting base 8, the fine filter component 1, the cooling component 2, the vacuum air pump 3, the vacuum tank component 5 and the oil well pump 7 are arranged on the upper surface of the connecting base 8, the heating component 4 is arranged on the outer side of the vacuum tank component 5, an inlet of the heating component 4 is connected with an outlet of the prefilter component 6 through a guide pipe, an outlet of the heating component 4 is connected with an inlet of the vacuum tank component 5 through a guide pipe, an air outlet at the upper end of the vacuum tank component 5 is connected with an air inlet of the vacuum air pump 3 through a guide pipe, an air outlet of the vacuum air pump 3 is connected with an air inlet of the cooling component 2 through a guide pipe, and an liquid outlet at the lower end of the vacuum tank component 5 is connected with an inlet of the oil well pump 7 through a guide pipe, the outlet of the oil pump 7 is connected with the inlet of the fine filter component 1 through a conduit, the primary filter component 6 comprises two U-shaped supports 62 arranged on the upper surface of the connecting base 8, a primary filter body 61 is arranged between the upper ends of the two U-shaped supports 62, the liquid can be primarily filtered through the primary filter body 61, so as to filter solid particles in the liquid, the heating component 4 comprises an annular shell 43 arranged on the outer side of the vacuum tank component 5, a heating plate 41 is arranged on the inner side of the annular shell 43, a spiral heat exchange tube 42 with a spiral structure is arranged in the annular shell 43, the primarily filtered liquid can be subjected to heat exchange through the spiral heat exchange tube 42, the spiral heat exchange tube 42 can be heated through the heating plate 41, so as to heat the liquid, the vacuum tank component 5 comprises a tank body 53, a pressure sensor 51 is arranged on the inner top surface of the tank body 53, and a sprinkler 52 is arranged on the upper end of the tank body 53, the center of the upper end of the tank body 53 is provided with an air outlet, the center of the lower end of the tank body 53 is provided with a liquid outlet, the air in the tank body 53 can be extracted through the vacuum air pump 3, so that negative pressure vacuum is formed in the tank body 53, liquid can be sucked into the tank body 53, the liquid can be sprayed into the tank body 53 through the spraying head 52, moisture in the liquid is evaporated through heated oil, the air is pumped into the cooling component 2 through the vacuum air pump 3, the pressure in the tank body 53 can be detected through the pressure sensor 51 during vacuum pumping, so that the detection is more convenient, the cooling component 2 comprises a cooling tank 22, the middle of the inside of the cooling tank 22 is provided with a cooling pipe 23, the cooling pipe 23 divides the inside of the cooling tank 22 into a cold area cavity and a cooling liquid cavity, the inside of the cold area cavity is provided with a spiral air blowing pipe 24, and the outer side of the spiral air blowing pipe 24 is uniformly provided with air nozzles, the upper end and the lower end of the cooling liquid cavity are respectively provided with a cooling liquid outlet and a cooling liquid inlet, the upper end of the cooling cavity is provided with an air outlet part 21, the lower end of the cooling cavity is provided with a liquid guide outlet, the air pumped by the vacuum air pump 3 can be sprayed to the inner side of the cooling pipe 23 through the spiral air blowing pipe 24, the cooling liquid can be contained through the cooling liquid cavity, the outer side of the cooling pipe 23 can be cooled through the cooling liquid, the inside of the cooling tank 22 can be decompressed through the air outlet part 21, the cooled liquid can be guided out through the liquid guide outlet on the cooling cavity, the air outlet part 21 comprises an air outlet pipe, the air outlet pipe is provided with a pressure relief valve, the fine filter component 1 comprises a flow distribution box body 11, the flow distribution box body 11 is uniformly provided with liquid outlet columns and liquid inlet columns, the liquid outlet columns and the liquid inlet columns are in one-to-one correspondence, the liquid outlet columns and the liquid inlet columns are respectively provided with manual valves 12, and fine filters 13 are arranged between the upper ends of the corresponding liquid outlet columns and liquid inlet columns, can carry out the essence to liquid through the essence filter 13 and strain, and can install the number of essence filter 13 as required, it is more convenient to make the equipment, flow distribution box 11 includes the supporting box, be equipped with the baffle in the middle of the inside of supporting box, the baffle is divided into flow distribution chamber and manifold with the inside of supporting box, the one end of flow distribution chamber is equipped with the inlet, the one end of manifold is equipped with the liquid outlet, can shunt liquid to inside every essence filter 13 through flow distribution chamber, can collect the liquid after the essence is strained through the manifold, derive again, this combination formula vacuum oil filter, moreover, the steam generator is simple in structure, the operation is simple and convenient, not only make to assemble more convenient to the device, and can have more need to install the number of essence filter equipment, it is more nimble to use, for providing convenience.
When in use: the air in the tank 53 can be extracted by the vacuum air pump 3, so that negative pressure vacuum is formed in the tank 53, the liquid can be sucked into the tank 53, the pressure in the tank 53 can be detected by the pressure sensor 51 during vacuum pumping, so that the detection is more convenient, the liquid can be primarily filtered by the prefilter body 61, so that solid particles in the liquid can be filtered, the primarily filtered liquid can be subjected to heat exchange by the spiral heat exchange tube 42, the spiral heat exchange tube 42 can be heated by the heating plate 41, so that the liquid can be heated, then the liquid can be sprayed into the tank 53 by the spray head 52, moisture in the liquid can be evaporated by the heated oil, the air is pumped into the cooling module 2 by the vacuum air pump 3, the air pumped by the vacuum air pump 3 can be sprayed into the cooling tube 23 by the spiral air blowing tube 24, can hold the coolant liquid through the coolant liquid cavity, and can cool off the outside of cooling tube 23 through the coolant liquid, can carry out the pressure release to cooling tank 22 inside through going out gas spare 21, can derive the liquid that cools off through the liquid export on the cold district chamber, can extract the reposition of redundant personnel intracavity portion of flow box body 11 with the inside oil of jar body 53 through oil-well pump 7, then can carry out the essence to liquid through essence filter 13, and can install the number of essence filter 13 according to the demand, make the equipment more convenient, can shunt liquid to inside every essence filter 13 through reposition of redundant personnel chamber, can collect the liquid after the essence filter through the manifold, derive again.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a modular vacuum oil filter, includes that the essence filters subassembly (1), cooling module (2), vacuum aspiration pump (3), heating element (4), vacuum tank subassembly (5), prefilter subassembly (6), oil-well pump (7) and connection base (8), its characterized in that: a primary filter component (6) is arranged at one end of the upper surface of the connecting base (8), a fine filter component (1), a cooling component (2), a vacuum air pump (3), a vacuum tank component (5) and an oil well pump (7) are arranged on the upper surface of the connecting base (8), a heating component (4) is arranged on the outer side of the vacuum tank component (5), the inlet of the heating component (4) is connected with the outlet of the primary filter component (6) through a guide pipe, the outlet of the heating component (4) is connected with the inlet of the vacuum tank component (5) through a guide pipe, the air outlet at the upper end of the vacuum tank component (5) is connected with the air inlet of the vacuum air pump (3) through a guide pipe, the air outlet of the vacuum air pump (3) is connected with the air inlet of the cooling component (2) through a guide pipe, and the liquid outlet at the lower end of the vacuum tank component (5) is connected with the inlet of the oil well pump (7) through a guide pipe, the outlet of the oil well pump (7) is connected with the inlet of the fine filter component (1) through a conduit.
2. The combined vacuum oil filter of claim 1, wherein: preliminary filter subassembly (6) are including two U type supports (62) of setting at connection base (8) upper surface, are equipped with preliminary filter body (61) between the upper end of two U type supports (62).
3. The combined vacuum oil filter of claim 1, wherein: the heating assembly (4) comprises an annular shell (43) arranged on the outer side of the vacuum tank assembly (5), a heating plate (41) is arranged on the inner side of the annular shell (43), and a spiral heat exchange tube (42) of a spiral structure is arranged inside the annular shell (43).
4. The combined vacuum oil filter of claim 1, wherein: the vacuum tank assembly (5) comprises a tank body (53), a pressure sensor (51) is arranged on the top surface of the interior of the tank body (53), a sprinkler head (52) is arranged at the upper end of the tank body (53), an air outlet is formed in the center of the upper end of the tank body (53), and a liquid outlet is formed in the center of the lower end of the tank body (53).
5. The combined vacuum oil filter of claim 1 wherein: cooling module (2) are equipped with cooling tube (23) including cooling tank (22) in the middle of the inside of cooling tank (22), and cooling tube (23) divide the inside of cooling tank (22) into cold district chamber and coolant liquid cavity, and the inside in cold district chamber is equipped with spiral gas blow pipe (24), and spiral gas blow pipe (24) outside evenly is equipped with the air jet, the upper end and the lower extreme of coolant liquid cavity are equipped with coolant liquid export and coolant liquid import respectively, and the upper end in cold district chamber is equipped with out gas spare (21), and the lower extreme in cold district chamber is equipped with the liquid delivery mouth.
6. The combined vacuum oil filter of claim 5, wherein: the gas outlet piece (21) comprises a gas outlet pipe, and a pressure relief valve is arranged on the gas outlet pipe.
7. The combined vacuum oil filter of claim 1, wherein: the fine filtration assembly (1) comprises a flow distribution box body (11), liquid outlet columns and liquid inlet columns are uniformly arranged on the flow distribution box body (11) and correspond to each other one by one, manual valves (12) are arranged on the liquid outlet columns and the liquid inlet columns, and fine filters (13) are arranged between the corresponding upper ends of the liquid outlet columns and the liquid inlet columns.
8. The combined vacuum oil filter of claim 7, wherein: flow distribution box (11) are equipped with the baffle including the supporting box body in the middle of the inside of supporting box body, and the baffle is divided flow distribution chamber and manifold with the inside part of supporting box body, and the one end in flow distribution chamber is equipped with the inlet, and the one end of manifold is equipped with the liquid outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620761.3A CN114515468A (en) | 2021-12-28 | 2021-12-28 | Combined vacuum oil filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111620761.3A CN114515468A (en) | 2021-12-28 | 2021-12-28 | Combined vacuum oil filter |
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| Publication Number | Publication Date |
|---|---|
| CN114515468A true CN114515468A (en) | 2022-05-20 |
Family
ID=81597332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111620761.3A Pending CN114515468A (en) | 2021-12-28 | 2021-12-28 | Combined vacuum oil filter |
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| Country | Link |
|---|---|
| CN (1) | CN114515468A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107137972A (en) * | 2017-06-16 | 2017-09-08 | 镇江市长江机电设备厂有限公司 | A kind of high performance vacuum oil purifier |
| CN207429814U (en) * | 2017-10-20 | 2018-06-01 | 重庆市陆顺科技发展有限公司 | A kind of vacuum oil-filter of good filtration effect |
| CN207545901U (en) * | 2017-10-19 | 2018-06-29 | 重庆市陆顺科技发展有限公司 | A kind of vacuum jar structure of vacuum oil-filter |
| CN111607428A (en) * | 2020-04-23 | 2020-09-01 | 宝应县恒泰电器设备厂 | High-efficient vacuum oil filter |
| CN211514682U (en) * | 2019-11-24 | 2020-09-18 | 重庆第二师范学院 | Chemical grinding device with drying function |
| CN212669254U (en) * | 2020-07-16 | 2021-03-09 | 洛阳天泰环境科技有限公司 | Fine filter for high fluorine water treatment |
-
2021
- 2021-12-28 CN CN202111620761.3A patent/CN114515468A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107137972A (en) * | 2017-06-16 | 2017-09-08 | 镇江市长江机电设备厂有限公司 | A kind of high performance vacuum oil purifier |
| CN207545901U (en) * | 2017-10-19 | 2018-06-29 | 重庆市陆顺科技发展有限公司 | A kind of vacuum jar structure of vacuum oil-filter |
| CN207429814U (en) * | 2017-10-20 | 2018-06-01 | 重庆市陆顺科技发展有限公司 | A kind of vacuum oil-filter of good filtration effect |
| CN211514682U (en) * | 2019-11-24 | 2020-09-18 | 重庆第二师范学院 | Chemical grinding device with drying function |
| CN111607428A (en) * | 2020-04-23 | 2020-09-01 | 宝应县恒泰电器设备厂 | High-efficient vacuum oil filter |
| CN212669254U (en) * | 2020-07-16 | 2021-03-09 | 洛阳天泰环境科技有限公司 | Fine filter for high fluorine water treatment |
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Application publication date: 20220520 |