CN111701351A - Anti-blocking type gas impurity filtering equipment and method - Google Patents
Anti-blocking type gas impurity filtering equipment and method Download PDFInfo
- Publication number
- CN111701351A CN111701351A CN202010655234.5A CN202010655234A CN111701351A CN 111701351 A CN111701351 A CN 111701351A CN 202010655234 A CN202010655234 A CN 202010655234A CN 111701351 A CN111701351 A CN 111701351A
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- Prior art keywords
- rotating
- purifying box
- sliding sleeve
- rotating disc
- filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0039—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices
- B01D46/0041—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding
- B01D46/0045—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with flow guiding by feed or discharge devices for feeding by using vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0052—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0052—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation
- B01D46/0056—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation with rotational movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/106—Ring-shaped filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/78—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving centrifugal forces
Abstract
The invention discloses anti-blocking gas impurity filtering equipment and a method, wherein the anti-blocking gas impurity filtering equipment comprises a body and a purifying box arranged in the purifying box, an air inlet pipe is arranged at an air inlet port on the upper side of the purifying box, an exhaust pipe is arranged at an exhaust port on the lower side of the purifying box, and a filtering component is arranged in the purifying box; the filter assembly comprises a rotating disc and a conical filter piece, wherein the rotating disc is rotatably arranged at the bottom in the purifying box, and the conical filter piece is arranged above the rotating disc; the invention designs the filter screen to overcome the defects of the existing filtering device, the filter screen is arranged in a conical shape, so that impurities can slide conveniently, the hole cleaning operation is assisted by the scraping of the scraping brush, in addition, the filter screen is rotated, the impurities are cleaned by centrifugal force, the filter screen can intermittently loosen and tighten during rotation, and the impurity removal effect is effectively improved.
Description
Technical Field
The invention relates to the technical field of fuel gas impurity filtering devices, in particular to anti-blocking fuel gas impurity filtering equipment and method.
Background
With the rapid development of clean and efficient energy sources such as natural gas, the natural gas enters thousands of households, more and more urban residents begin to use the natural gas, and in order to calculate the usage amount of gas of each household conveniently, a gas meter is usually used for calculation.
In addition, the prior patent with the patent publication number of CN208097680U discloses a filtering device, but the device also has the problem that the impurities cannot be removed in time.
The anti-blocking type gas impurity filtering equipment and method are designed aiming at the defects of the existing device.
Disclosure of Invention
The invention aims to provide anti-blocking type gas impurity filtering equipment and method to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an anti-blocking type gas impurity filtering device comprises a body and a purifying box arranged in the body, wherein an air inlet pipe is arranged at an air inlet port on the upper side of the purifying box, an exhaust pipe is arranged at an exhaust port on the lower side of the purifying box, and a filtering assembly is arranged in the purifying box;
the filter assembly comprises a rotating disc and a conical filter piece, wherein the rotating disc is rotatably arranged at the bottom in the purifying box, and the conical filter piece is arranged above the rotating disc;
the surface of the purification box at the outer side of the lower end of the conical filter piece is provided with a port for discharging materials, a material discharging pipe is arranged in the material discharging port, and the tail end of the material discharging pipe is detachably provided with a collecting box;
a hanging rod is arranged at the top in the purification box, a cleaning brush for scraping materials is arranged at the lower end of the hanging rod, and the cleaning brush is in contact with the upper surface of the flexible filter screen;
the middle position of the rotating disc is provided with a through hole which is coaxial with the exhaust port, the through hole is internally provided with a fan blade which can drive the rotating disc to rotate by utilizing airflow power, a sliding sleeve is arranged above the rotating disc and is coaxial with the rotating disc, the outer side of the sliding sleeve is fixedly connected with the upper end surface of the rotating disc through a connecting frame, an inner hole of the sliding sleeve is in sliding fit with a rotating column, and a rotating limiting part which limits the relative rotation of the rotating column and the sliding sleeve is arranged between the rotating column and the sliding sleeve;
the lower end of the rotary column is provided with a limiting block, and the limiting block and the sliding sleeve are fixedly connected through a return spring.
As a further scheme of the invention: the conical filter element comprises a connecting sleeve which is rotatably connected with the upper end of the rotating column through a fixed bearing and a first rotating ring which is rotatably arranged on the inner wall of the purifying box, a second rotating ring is arranged on the outer side of the connecting sleeve, a conical flexible filter screen for filtering is connected between the second rotating ring and the first rotating ring, and the first rotating ring and the second rotating ring are connected through a plurality of connecting pieces which can be longitudinally folded;
the top of the rotary column is provided with a pushing piece which is used for intermittently driving the first rotary ring to move up and down so as to realize the switching of the flexible filter screen between loosening and tightening.
As a still further scheme of the invention: the collecting box is in threaded connection with the discharging pipe.
As a still further scheme of the invention: the number of link is equipped with two at least, and the link array distributes in the slip cap outside.
As a still further scheme of the invention: the connecting piece includes the head rod of being connected with first rotating ring rotation and rotates the second connecting rod of being connected with the second rotating ring, head rod and second connecting rod tip pass through the axis of rotation and rotate the connection, the cover is equipped with the torsional spring in the axis of rotation, and the both ends of torsional spring are connected fixedly with head rod, second connecting rod respectively.
As a still further scheme of the invention: the pushing piece comprises a fixed shaft arranged on the outer side of the top of the rotating column, a stress wheel is arranged at the outer end of the fixed shaft, and a plurality of protruding blocks corresponding to the stress wheel are arranged at the top in the purifying box.
As a still further scheme of the invention: the rotary limiting part comprises a limiting protrusion arranged on the outer side of the rotary column and a limiting groove arranged on the inner hole wall of the sliding sleeve, and the limiting protrusion is matched with the limiting groove.
Compared with the prior art, the invention has the beneficial effects that: the invention is designed aiming at the defects of the existing filtering device, the filter screen is arranged in a conical shape, so that impurities can conveniently slide off, the hole cleaning operation is assisted by the scraping of the scraping brush, in addition, the filter screen is rotated, the impurities are cleaned by centrifugal force, the filter screen can be intermittently loosened and tightened while rotating, and the impurity removal effect is effectively improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of a rotating disk according to the present invention.
Fig. 3 is a schematic view of a conical filter element according to the present invention.
Fig. 4 is a schematic structural view of the connector of the present invention.
Wherein: the device comprises a body 1, a purification box 2, an air inlet pipe 3, a convex block 4, a cleaning brush 5, a discharge pipe 6, a collection box 7, a rotating disc 8, fan blades 9, an exhaust pipe 10, an exhaust port 11, a limiting block 12, a flexible filter screen 13, a first rotating ring 14, a second rotating ring 15, a rotating column 16, a stress wheel 161, a return spring 162, a connecting piece 17, a sliding sleeve 18, a connecting frame 19, an opening 20, a first connecting rod 171, a rotating shaft 172 and a second connecting rod 173.
Detailed Description
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
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.
Example 1
Referring to fig. 1-4, in the embodiment of the present invention, an anti-blocking type gas impurity filtering apparatus includes a body 1 and a purifying box 2 disposed inside the body, an air inlet pipe 3 is disposed at an air inlet port on an upper side of the purifying box 2, an exhaust pipe 10 is disposed at an exhaust port 11 on a lower side of the purifying box 2, and a filtering assembly is disposed inside the purifying box 2;
the filtering component comprises a rotating disc 8 which is rotatably arranged at the bottom in the purifying box 2 and a conical filtering piece which is arranged above the rotating disc 8;
the surface of the purification box 2 at the outer side of the lower end of the conical filter element is provided with a port for discharging materials, a material discharging pipe 6 is arranged in the material discharging port, the tail end of the material discharging pipe 6 is detachably provided with a collecting box 7, and the collecting box 7 is in threaded connection with the material discharging pipe 6, so that impurities in the collecting box 7 can be conveniently cleaned in the later period;
a hanging rod is arranged at the top in the purification box 2, a cleaning brush 5 for scraping materials is arranged at the lower end of the hanging rod, and the cleaning brush 5 is in contact with the upper surface of the flexible filter screen 13;
a through hole 20 which is coaxial with the exhaust port 11 is formed in the middle of the rotating disc 8, fan blades 9 which can drive the rotating disc 8 to rotate by using airflow power are arranged in the through hole 20, a sliding sleeve 18 is arranged above the rotating disc 8, the sliding sleeve 18 and the rotating disc 8 are coaxially arranged, the outer side of the sliding sleeve 18 and the upper end face of the rotating disc 8 are fixedly connected through a connecting frame 19, at least two connecting frames 19 are arranged, the connecting frames 19 are distributed on the outer side of the sliding sleeve 18 in an array manner, a rotating column 16 is in sliding fit in an inner hole of the sliding sleeve 18, and a rotation limiting part which limits the relative rotation of the rotating column 16 and the sliding sleeve 18 is arranged between the rotating column 16 and the sliding sleeve 18;
the lower end of the rotating column 16 is provided with a limit block 12, and the limit block 12 and the sliding sleeve 18 are fixedly connected through a return spring 162;
the conical filter element comprises a connecting sleeve which is rotationally connected with the upper end of a rotating column 16 through a fixed bearing and a first rotating ring 14 which is rotationally arranged on the inner wall of the purifying box 2, a second rotating ring 15 is arranged on the outer side of the connecting sleeve, a conical flexible filter screen 13 for filtering is connected between the second rotating ring 15 and the first rotating ring 14, and the first rotating ring 14 and the second rotating ring are connected through a plurality of connecting pieces 17 which can be longitudinally folded;
the connecting piece 17 comprises a first connecting rod 171 rotationally connected with the first rotating ring 14 and a second connecting rod 173 rotationally connected with the second rotating ring 15, the end parts of the first connecting rod 171 and the second connecting rod 173 are rotationally connected through a rotating shaft 172, a torsion spring is sleeved on the rotating shaft 172, the two ends of the torsion spring are respectively connected and fixed with the first connecting rod 171 and the second connecting rod 173, and under the action of the torsion spring, the first rotating rod 171 and the second rotating rod 173 always maintain a certain angle;
the top of the rotary column 16 is provided with a pushing piece for intermittently driving the first rotary ring 14 to move up and down so as to realize the switching between loosening and tightening of the flexible filter screen 13;
the pushing piece comprises a fixed shaft arranged on the outer side of the top of the rotating column 16, a stress wheel 161 is arranged at the outer end of the fixed shaft, a plurality of protruding blocks 4 corresponding to the stress wheel 161 are arranged at the top in the purifying box 2, the stress wheel 161 can be intermittently extruded by the protruding blocks 4 along with the rotation of the rotating column 16, and the resetting of the reset spring 162 is matched, so that the rotating column 16 can reciprocate up and down along the sliding sleeve 18, the second rotating ring 15 can be driven to bump up and down, the flexible filter screen 13 is intermittently loosened, and impurities can be removed conveniently;
the rotation limiting part comprises a limiting protrusion arranged on the outer side of the rotating column 16 and a limiting groove arranged on the inner hole wall of the sliding sleeve 18, and the limiting protrusion is matched with the limiting groove;
the working principle of the invention is as follows: the fan blades 9 are driven to rotate by power generated when air flow penetrates through the air flow, the fan blades 9 drive the rotary disc 8 to rotate, the rotary disc 8 drives the conical filtering piece to rotate through the connecting frame 19 and the rotary column 16, the cleaning brush 5 above the conical filtering piece can scrape impurities on the surface of the flexible filtering net 13, the impurities can slide around, and finally the impurities are discharged into the collecting box 7 along the discharging pipe 6, when the rotary column 16 rotates, the stress wheel 161 at the upper end of the rotary column can be intermittently extruded by the protruding blocks 4 and is matched with the reset of the reset spring 162 and the connecting piece 17, so that the rotary column 16 can reciprocate up and down along the sliding sleeve 18, the second rotary ring 15 can be driven to bump up and down, the flexible filtering net 13 is intermittently loosened, and the impurities can be removed conveniently.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. An anti-blocking type gas impurity filtering device comprises a body (1) and a purifying box (2) arranged inside the body, wherein an air inlet pipe (3) is arranged at an air inlet port on the upper side of the purifying box (2), an exhaust pipe (10) is arranged at an exhaust port (11) on the lower side of the purifying box, and a filtering component is arranged inside the purifying box (2);
the device is characterized in that the filtering component comprises a rotating disc (8) which is rotatably arranged at the inner bottom of the purifying box (2) and a conical filtering piece which is arranged above the rotating disc (8);
the surface of the purification box (2) at the outer side of the lower end of the conical filter piece is provided with a port for discharging materials, a material discharging pipe (6) is arranged in the material discharging port, and the tail end of the material discharging pipe (6) is detachably provided with a collecting box (7);
a hanging rod is arranged at the top in the purification box (2), a cleaning brush (5) for scraping materials is arranged at the lower end of the hanging rod, and the cleaning brush (5) is in contact with the upper surface of the flexible filter screen (13);
a through hole (20) which is coaxial with the exhaust port (11) is formed in the middle of the rotating disc (8), fan blades (9) which can drive the rotating disc (8) to rotate by utilizing airflow power are arranged in the through hole (20), a sliding sleeve (18) is arranged above the rotating disc (8), the sliding sleeve (18) and the rotating disc (8) are coaxially arranged, the outer side of the sliding sleeve (18) and the upper end face of the rotating disc (8) are fixedly connected through a connecting frame (19), a rotating column (16) is slidably matched in an inner hole of the sliding sleeve (18), and a rotation limiting part which limits the relative rotation of the rotating column (16) and the sliding sleeve (18) is arranged between the rotating column (16) and the sliding sleeve (18);
the lower end of the rotating column (16) is provided with a limiting block (12), and the limiting block (12) and the sliding sleeve (18) are fixedly connected through a return spring (162).
2. The anti-blocking type gas impurity filtering device according to claim 1, wherein the conical filter element comprises a connecting sleeve rotatably connected with the upper end of the rotating column (16) through a fixed bearing and a first rotating ring (14) rotatably arranged on the inner wall of the purifying box (2), a second rotating ring (15) is arranged outside the connecting sleeve, a conical flexible filter screen (13) for filtering is connected between the second rotating ring (15) and the first rotating ring (14), and the first rotating ring (14) and the second rotating ring (15) are connected through a plurality of connecting pieces (17) capable of being folded longitudinally;
the top of the rotating column (16) is provided with a pushing piece for intermittently driving the first rotating ring (14) to move up and down so as to realize the switching between loosening and tightening of the flexible filter screen (13).
3. Anti-clogging gas impurity filtering apparatus according to claim 1, characterized in that the collecting tank (7) and the discharge pipe (6) are in threaded connection.
4. Anti-clogging gas impurity filtering equipment according to claim 1, characterized in that the number of said connecting frames (19) is at least two, and the array of connecting frames (19) is distributed outside the sliding sleeve (18).
5. The anti-blocking type gas impurity filtering device according to claim 2, wherein the connecting piece (17) comprises a first connecting rod (171) rotatably connected with the first rotating ring (14) and a second connecting rod (173) rotatably connected with the second rotating ring (15), the ends of the first connecting rod (171) and the second connecting rod (173) are rotatably connected through a rotating shaft (172), a torsion spring is sleeved on the rotating shaft (172), and two ends of the torsion spring are respectively fixedly connected with the first connecting rod (171) and the second connecting rod (173).
6. The anti-blocking type gas impurity filtering device according to claim 2, wherein the pushing member comprises a fixed shaft arranged outside the top of the rotating column (16), the outer end of the fixed shaft is provided with a stress wheel (161), and the inner top of the purifying box (2) is provided with a plurality of convex blocks (4) corresponding to the stress wheel (161).
7. Anti-blocking type gas impurity filtering equipment according to claim 1, wherein the rotation limiting part comprises a limiting protrusion arranged on the outer side of the rotating column (16) and a limiting groove arranged on the inner hole wall of the sliding sleeve (18), and the limiting protrusion and the limiting groove are matched.
8. A filtering method of an anti-blocking type gas impurity filtering device according to any one of claims 1 to 7, characterized in that the fan blades (9) are driven to rotate by the power generated when the air current passes through, the fan blades (9) drive the rotating disc (8) to rotate, the rotating disc (8) drives the conical filtering piece to rotate through the connecting frame (19) and the rotating column (16), the cleaning brush (5) above the conical filtering piece can scrape the impurities on the surface of the flexible filtering net (13) so that the impurities can slide down all around and finally be discharged into the collecting box (7) along the discharging pipe (6), when the rotating column (16) rotates, the stressed wheel (161) at the upper end of the rotating column is intermittently extruded by the convex blocks (4) and is matched with the reset of the reset spring (162) and the connecting piece (17) so that the rotating column (16) reciprocates up and down along the sliding sleeve (18), therefore, the second rotating ring (15) can be driven to bump up and down, so that the flexible filter screen (13) is loosened intermittently, and impurities can be removed conveniently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010655234.5A CN111701351A (en) | 2020-07-09 | 2020-07-09 | Anti-blocking type gas impurity filtering equipment and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010655234.5A CN111701351A (en) | 2020-07-09 | 2020-07-09 | Anti-blocking type gas impurity filtering equipment and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111701351A true CN111701351A (en) | 2020-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010655234.5A Pending CN111701351A (en) | 2020-07-09 | 2020-07-09 | Anti-blocking type gas impurity filtering equipment and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111701351A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096544A (en) * | 2020-11-23 | 2020-12-18 | 山东艾泰克环保科技股份有限公司 | Empty filter assembly with dustproof filtering capability |
| CN113262572A (en) * | 2021-05-14 | 2021-08-17 | 机械工业第九设计研究院有限公司 | Foreign matter separation filter equipment that compressed air flows and uses |
| CN113599916A (en) * | 2021-08-11 | 2021-11-05 | 王琪 | Natural gas-solid separation equipment with heat dissipation and slag discharge functions |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096544A (en) * | 2020-11-23 | 2020-12-18 | 山东艾泰克环保科技股份有限公司 | Empty filter assembly with dustproof filtering capability |
| CN112096544B (en) * | 2020-11-23 | 2021-02-09 | 山东艾泰克环保科技股份有限公司 | Empty filter assembly with dustproof filtering capability |
| CN113262572A (en) * | 2021-05-14 | 2021-08-17 | 机械工业第九设计研究院有限公司 | Foreign matter separation filter equipment that compressed air flows and uses |
| CN113262572B (en) * | 2021-05-14 | 2023-04-18 | 机械工业第九设计研究院股份有限公司 | Foreign matter separation filter equipment that compressed air flows and uses |
| CN113599916A (en) * | 2021-08-11 | 2021-11-05 | 王琪 | Natural gas-solid separation equipment with heat dissipation and slag discharge functions |
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Application publication date: 20200925 |