CN111878467B - Air pump system - Google Patents
Air pump system Download PDFInfo
- Publication number
- CN111878467B CN111878467B CN202010699166.2A CN202010699166A CN111878467B CN 111878467 B CN111878467 B CN 111878467B CN 202010699166 A CN202010699166 A CN 202010699166A CN 111878467 B CN111878467 B CN 111878467B
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- China
- Prior art keywords
- air inlet
- filter screen
- wedge
- inlet pipeline
- pump body
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
Abstract
The utility model provides an air pump system, relates to air pump technical field, includes: the pump body, the air intake of the pump body is fitted with the air inlet pipeline above; a mounting gap is reserved between the air inlet pipeline and the air inlet, a filtering mechanism connected with the pump body is arranged in the mounting gap, and the air inlet pipeline is communicated with the air inlet through the filtering mechanism; the filtering mechanism comprises a driving part, a transmission part and a filter screen, wherein the driving part is slidably sleeved on the air inlet pipeline, the transmission part is in sliding contact with the driving part and is rotatably connected to the upper part of the pump body, the filter screen is connected with the transmission part, and the filter screen is positioned in the installation gap to communicate the air inlet with the air inlet pipeline; the driving part slides downwards along the air inlet pipeline, and the transmission part rotates in the horizontal direction through relative sliding with the transmission part, so that the filter screen slides out of the mounting gap; meanwhile, the driving part slides to the gap after the filter screen slides out to be sealed, so that impurities are prevented from entering the pump body, and the air pump system can continue to operate; after the filter screen is replaced, the driving part slides upwards along the air inlet pipeline, and the transmission part is rotated to send the filter screen into the installation gap.
Description
Technical Field
The invention relates to the technical field of air pumps, in particular to an air pump system.
Background
The high-pressure air pump is commonly called a high-pressure fan, a vortex pump, a vortex air pump, a vortex vacuum pump and a vortex vacuum air pump, and is called a fan, an air pump and an air pump in the industry, and the other name is a side-flow fan. The air pump is a device for extracting or compressing gas, and the working principle of the air pump is as follows: the engine drives the air pump impeller to suck air from the air so as to pump the air, and the pumped air is led into the air storage cylinder through a pipeline or directly discharged.
In the paper extraction folding process, an air pump system is needed to be used for adsorbing and folding paper, the existing air pump system comprises an air pump, a motor connected with the air pump through a belt mechanism, a frame and a heat dissipation system, and in the working process of the air pump system, the motor drives the air pump to absorb and remove dust, impurities and the like on the surface of raw paper, so that the effects of absorbing dust and removing impurities are achieved; however, after the long-time work, dust and impurities can be gathered at the positions of an air inlet, an impeller and the like of the air pump, and when the dust and the impurities are too much gathered, the efficiency of the air pump can be affected, the impeller can be damaged possibly, and the air pump needs to be disassembled for repair and replacement; and some air pump systems are additionally provided with dust removal mechanisms, but when filter screens in the dust removal mechanisms need to be replaced, the machine needs to be stopped, pipelines need to be disassembled for replacement, and time and labor are wasted.
Disclosure of Invention
According to the problems that an impeller is damaged due to accumulation of impurities of a wind pump in the existing wind pump system and a filter screen is inconvenient to replace, the invention adopts the following technical scheme:
an air pump system comprising:
the pump body is characterized in that an air inlet pipeline is arranged above an air inlet of the pump body; a mounting gap is reserved between the air inlet pipeline and the air inlet, a filtering mechanism connected with the pump body is arranged in the mounting gap, and the air inlet pipeline is communicated with the air inlet through the filtering mechanism; the filter mechanism comprises a driving part, a transmission part and a filter screen, wherein the driving part is sleeved on the air inlet pipeline in a sliding manner, the transmission part is in sliding butt joint with the driving part and is rotationally connected to the pump body, the filter screen is rotationally arranged in the installation gap, and the filter screen is communicated with the air inlet and the air inlet pipeline;
the driving part is moved to enable the transmission part to rotate, and the filter screen is located in the installation gap or rotates to the outside of the installation gap.
Compared with the prior art, the invention has the following beneficial effects: when the filter screen is used, the driving part slides downwards along the air inlet pipeline, and the transmission part rotates in the horizontal direction through relative sliding with the transmission part, so that the filter screen is rotated out from the installation gap, and the filter screen is convenient to replace; meanwhile, the driving part seals the installation gap to prevent impurities from entering the pump body, so that the air pump system can continue to operate; after the filter screen is replaced, the driving part slides upwards along the air inlet pipeline, and the transmission part is rotated to rotate the filter screen into the mounting gap; the filter screen can intercept the impurity of inhaling the air pump effectively, prevents that impurity from causing the damage to the impeller in getting into the air pump to when the impurity that the filter screen was collected was too much, can conveniently clear up or change the filter screen to the filter screen.
Preferably, the driving part includes: the sealing barrel and the link block of fixed connection on the sealing barrel lateral wall on the air inlet pipeline are located to the slip cap, the one end that link block kept away from the air inlet pipeline is the wedge to the wedge face and the sliding counterbalance of transmission portion of wedge.
Preferably, the transmission portion includes that fixed mounting locates the rotation sleeve on the first pivot in the outer wall of the pump body and cover, the rotation sleeve middle part links to each other with the filter screen through the connecting rod, link to each other through the cover establishing the wind spring on the first pivot between connecting rod and the outer wall of the pump body, the rotation sleeve is kept away from fixed mounting on the lateral wall of pump body one end and is rotated the connecting piece, the wedge face of rotation connecting piece and wedge slides and offsets.
Preferably, the rotating connecting piece comprises a second rotating shaft and a roller sleeved on the second rotating shaft, the second rotating shaft is located above the connecting rod and fixedly connected with the rotating sleeve, and the outer wall of the roller is in sliding and abutting contact with the wedge surface of the wedge block.
Preferably, two limiting holes are formed in the outer wall of the air inlet pipeline, the two limiting holes are symmetrical about the axis of the sealing barrel, and a locking mechanism for fixing the sealing barrel is arranged between each limiting hole and the sealing barrel.
Preferably, every locking mechanism all is including fixing fixed frame, pull rod and the spring at the sealed bobbin outer wall, spring mounting is in fixed frame, the pull rod passes and stretches into spacing downthehole behind fixed frame, spring and the sealed bobbin lateral wall, slides in the fixed frame and is equipped with the ring baffle, the fixed cover of ring baffle is located on the pull rod to the ring baffle is located between one end that the spring is close to sealed bobbin and the fixed frame inner wall.
Preferably, the connecting rod is eccentrically connected to the side wall of the filter screen.
Preferably, the wedge surface of the wedge block and the outer wall of the roller are rough surfaces.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a top view of one embodiment of the present invention.
Fig. 2 is a side view of the filter mechanism of fig. 1 in an operational state.
Fig. 3 is a side view of the filter mechanism of fig. 1 with the filter screen replaced.
FIG. 4 is a schematic view of the structure I in FIG. 1.
Fig. 5 is a schematic structural diagram of another embodiment of I in fig. 1.
FIG. 6 is a schematic structural diagram of II in FIG. 2.
The numbers in the figures are in order: 1. a pump body; 11. an air inlet; 12. an air inlet pipeline; 121. a limiting hole; 2. a filtering mechanism; 21. filtering with a screen; 211. a connecting rod; 22. a sealing cylinder; 23. connecting the sliding block; 24. a first rotating shaft; 25. rotating the sleeve; 26. a coil spring; 27. a second rotating shaft; 28. a drum; 3. a locking mechanism; 31. a fixing frame; 32. a pull rod; 33. an annular baffle; 34. a spring.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention clearer and easier to understand, the invention is further explained by combining the drawings and the detailed implementation mode:
as shown in fig. 1, 2 and 3, an embodiment of the present invention provides an air pump system including:
the pump body 1 is characterized in that an air inlet pipeline 12 is arranged above an air inlet 11 of the pump body 1; a mounting gap is reserved between the air inlet pipeline 12 and the air inlet 11, a filtering mechanism 2 connected with the pump body 1 is arranged in the mounting gap, and the air inlet pipeline 12 is communicated with the air inlet 11 through the filtering mechanism 2; the filter mechanism 2 includes that the drive division on the intake stack 12 is located to the slip cover, slides to offset and rotate the transmission portion of connection on the pump body 1 and the filter screen 21 that links to each other with the transmission portion with the drive division, filter screen 21 rotates and sets up in the installation clearance to filter screen 21 communicates air intake 11 and intake stack 12.
The driving part slides on the air inlet pipe 12 to drive the transmission part to horizontally rotate on the pump body 1, so that the filter screen 21 is positioned in the installation gap or rotates to the outside of the installation gap.
The driving part slides downwards along the air inlet pipeline 12, and the transmission part rotates in the horizontal direction through relative sliding with the transmission part, so that the filter screen 21 is rotated out from the installation gap, and the filter screen 21 is convenient to replace; meanwhile, the driving part slides to the installation gap to seal the installation gap, so that impurities are prevented from entering the pump body 1 from the installation gap to damage the impeller; after the filter screen 21 is replaced, the driving part slides upwards along the air inlet pipeline 12, and the transmission part is rotated to rotate the filter screen 21 into the installation gap; the filter screen 21 can intercept effectively and inhale the impurity of air pump, prevents that impurity from causing the damage to the impeller in getting into the air pump to when the impurity that the filter screen 21 was collected is too much, can be convenient clear up or change filter screen 21.
As shown in fig. 2, 3 and 4, according to another embodiment of the present invention, the air pump system further includes a driving part, and preferably, the driving part includes: the air inlet pipe 12 is sleeved with a sealing barrel 22 in a sliding manner, and the connecting slide block 23 is fixedly connected to the side wall of the sealing barrel 22, one end of the connecting slide block 23, far away from the air inlet pipe 12, is a wedge-shaped block, and the wedge-shaped surface of the wedge-shaped block is in sliding and abutting contact with the transmission part; when the sealing cylinder 22 slides on the air inlet duct 12, the transmission part is driven to horizontally rotate on the pump body 1, so that the filter screen 21 is positioned in the installation gap or rotates to the outside of the installation gap.
As shown in fig. 2, fig. 3 and fig. 4, according to another embodiment of the present invention, the air pump system further optimizes a transmission portion included therein, preferably, the transmission portion includes a first rotating shaft 24 fixedly installed on an outer wall of the pump body 1 and a rotating sleeve 25 sleeved on the first rotating shaft 24, a middle portion of the rotating sleeve 25 is connected to the filter screen 21 through a connecting rod 211, the connecting rod 211 is connected to the outer wall of the pump body 1 through a coil spring 26 sleeved on the first rotating shaft 24, a side wall of one end of the rotating sleeve 25 away from the pump body 1 is fixedly installed with a rotating connecting member, and the rotating connecting member is in sliding contact with a wedge surface of the wedge block.
The sealing cylinder 22 drives the connecting slide block 23 to slide downwards, the wedge block and the rotating connecting piece slide relatively, and meanwhile, the rotating connecting piece is pushed to drive the rotating sleeve 25 to rotate around the first rotating shaft 24, so that the filter screen 21 is rotated out of the mounting gap through the connecting rod 211; after the filter screen 21 is replaced, the sealing cylinder 22 is slid upwards to drive the connecting slide block 23 to slide upwards, and due to the elastic force of the coil spring 26, the rotating sleeve 25 rotates around the first rotating shaft 24 in the opposite direction, and simultaneously drives the rotating connecting piece to rotate so that the rotating connecting piece and the wedge block slide relatively, thereby driving the filter screen 21 to rotate into the installation gap through the connecting rod 211.
As shown in fig. 2, 3 and 4, according to another embodiment of the present invention, the air pump system is further optimized for the rotating connection member in the transmission portion, preferably, the rotating connection member includes a second rotating shaft 27 and a roller 28 sleeved on the second rotating shaft 27, the second rotating shaft 27 is located above the connecting rod 211 and is fixedly connected with the rotating sleeve 25, and the outer wall of the roller 28 is in sliding contact with the wedge surface of the wedge block; the wedge-shaped surface of the wedge-shaped block and the outer wall of the roller 28 are rough surfaces, so that the friction force between the outer wall of the roller 28 and the wedge-shaped block can be increased, when the wedge-shaped block and the outer wall of the roller 28 slide relatively, the roller 28 can rotate on the second rotating shaft 27, and the damage to the outer wall of the roller 28 caused by the relative sliding of the wedge-shaped block and the outer wall of the roller 28 is avoided; the roller 28 is sleeved on the second shaft 27 to prevent the wedge from directly sliding in contact with the second shaft 27, thereby preventing the second shaft 27 from being damaged.
As shown in fig. 2, 3 and 4, according to another embodiment of the present invention, the air pump system further optimizes the air inlet duct 12, preferably, two limiting holes 121 are formed in the outer wall of the air inlet duct 12, the two limiting holes 121 are symmetrical with respect to the axis of the sealing cylinder 22, and a locking mechanism 3 for fixing the sealing cylinder 22 is disposed between each limiting hole 121 and the sealing cylinder 22; in the working process of the air pump system, the locking mechanism 3 is used for fixing the sealing cylinder 22 on the air inlet pipeline 12, so that the sealing cylinder 22 is prevented from automatically sliding downwards to bring out the filter screen 21, and the normal work of the air pump system is prevented from being influenced.
As shown in fig. 4 and 6, according to another embodiment of the present invention, the air pump system is further optimized for the locking mechanisms 3 included therein, and preferably, each locking mechanism 3 includes a fixed frame 31 fixed on the outer wall of the sealing cylinder 22, a pull rod 32 and a spring 34, the spring 34 is installed in the fixed frame 31, the pull rod 32 passes through the fixed frame 31, the spring 34 and the side wall of the sealing cylinder 22 and then extends into the limiting hole 121, an annular baffle 33 is slidably disposed in the fixed frame 31, the annular baffle 33 is fixedly sleeved on the pull rod 32, and the annular baffle 33 is located between one end of the spring 34 close to the sealing cylinder 22 and the inner wall of the fixed frame 31.
When the filter screen 21 needs to be replaced, the pull rod 32 is pulled to be separated from the limiting hole 121, the annular baffle 33 is driven to compress the spring 34, the sealing cylinder 22 slides downwards, the wedge-shaped surface of the wedge-shaped block and the outer wall of the roller 28 slide relatively, the second rotating shaft 27 is pushed to rotate, the rotating sleeve 25 is driven to rotate around the first rotating shaft 24, the filter screen 21 is driven to rotate out of the installation gap, meanwhile, the sealing cylinder 22 seals the installation gap, impurities are prevented from entering the pump body 1, and the air pump system can continue to operate; after the filter screen 21 is replaced, the sealing cylinder 22 is slid upwards, due to the elastic force of the coil spring 26, the rotating sleeve 25 rotates around the first rotating shaft 24, the second rotating shaft 27 is driven to rotate, so that the wedge-shaped block and the outer wall of the roller 28 slide relatively, the filter screen 21 is driven to rotate into the installation gap through the connecting rod 211, and the annular baffle 33 is driven by the elastic force of the spring 34, so that the pull rod 32 is driven to extend into the limiting hole 121 again to fix the sealing cylinder 22.
As shown in fig. 4, according to another embodiment of the present invention, the air pump system further includes a connecting rod 211 in the transmission part, preferably, the connecting rod 211 is eccentrically connected to a side wall of the filter screen 21 near the first rotating shaft 24, so that when the connecting rod 211 drives the filter screen 21 to slide out from between the air inlet 11 and the air inlet duct 12, the filter screen 21 can rotate over a larger arc length than the connecting rod 211, and the filter screen 21 can slide out from between the air inlet 11 and the air inlet duct 12.
As shown, according to another embodiment of the present invention, in order to ensure that the filter screen 21 can slide out from between the air inlet 11 and the air inlet duct 12, the connecting rod 211 can be replaced by a curved rod, and the arc length of rotation of the filter screen 21 is increased by the curved rod.
The use principle of the invention is as follows: when the air pump is used, the filter screen 21 is placed between the air inlet 11 and the air inlet pipeline 12 to filter sucked air, when the filter screen 21 is blocked and needs to be replaced after working for a long time, the pull rod 32 is pulled to be separated from the limiting hole 121 to drive the annular baffle 33 to compress the spring 34, the sealing cylinder 22 is downwards slid at the moment, the wedge-shaped block of the connecting slide block 23 and the outer wall of the roller 28 relatively slide, so that the second rotating shaft 27 is pushed to drive the rotating sleeve 25 to rotate around the first rotating shaft 24, the filter screen 21 is driven to slide out from the position between the air inlet 11 and the air inlet pipeline 12 through the connecting rod 211, and meanwhile, the sealing cylinder 22 seals an installation gap to prevent impurities from entering the pump body 1, so that the air pump system can continuously run; after the filter screen 21 is replaced, the sealing cylinder 22 is slid upwards, due to the elastic force of the coil spring 26, the rotating sleeve 25 is driven to rotate around the first rotating shaft 24, and the second rotating shaft 27 is driven to rotate, so that the wedge block of the connecting sliding block 23 is pushed to slide relative to the outer wall of the roller 28, finally the filter screen 21 is driven to rotate into the installation gap through the connecting rod 211, and meanwhile, the annular baffle 33 is pushed by the elastic force of the spring 34, so that the pull rod 32 is driven to extend into the limiting hole 121 again to fix the sealing cylinder 22.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (3)
1. An air pump system comprising:
the air inlet pipeline (12) is arranged above the air inlet (11) of the pump body (1); the air pump is characterized in that a mounting gap is reserved between the air inlet pipeline (12) and the air inlet (11), a filtering mechanism (2) connected with the pump body (1) is arranged in the mounting gap, and the air inlet pipeline (12) is communicated with the air inlet (11) through the filtering mechanism (2);
the filtering mechanism (2) comprises a driving part, a transmission part and a filter screen (21), wherein the driving part is slidably sleeved on the air inlet pipeline (12), the transmission part is in sliding butt joint with the driving part and is rotatably connected to the pump body (1), the filter screen (21) is rotatably arranged in the installation gap, and the filter screen (21) is used for communicating the air inlet (11) with the air inlet pipeline (12);
the driving part is moved to enable the transmission part to rotate, so that the filter screen (21) is positioned in the installation gap or rotates to the outside of the installation gap;
wherein the driving part includes: the air inlet pipe is characterized by comprising a sealing barrel (22) which is sleeved on the air inlet pipe (12) in a sliding mode and a connecting sliding block (23) which is fixedly connected to the side wall of the sealing barrel (22), wherein one end, far away from the air inlet pipe (12), of the connecting sliding block (23) is a wedge-shaped block, and the wedge-shaped surface of the wedge-shaped block is abutted to the transmission part in a sliding mode;
the transmission part comprises a first rotating shaft (24) fixedly installed on the outer wall of the pump body (1) and a rotating sleeve (25) sleeved on the first rotating shaft (24), the middle part of the rotating sleeve (25) is connected with the filter screen (21) through a connecting rod (211), the connecting rod (211) is connected with the outer wall of the pump body (1) through a coil spring (26) sleeved on the first rotating shaft (24), a rotating connecting piece is fixedly installed on the side wall of one end, away from the pump body (1), of the rotating sleeve (25), and the rotating connecting piece is in sliding and abutting contact with the wedge surface of the wedge block;
the rotating connecting piece comprises a second rotating shaft (27) and a roller (28) sleeved on the second rotating shaft (27), the second rotating shaft (27) is positioned above the connecting rod (211) and is fixedly connected with the rotating sleeve (25), and the outer wall of the roller (28) is in sliding contact with the wedge-shaped surface of the wedge-shaped block;
two limiting holes (121) are formed in the outer wall of the air inlet pipeline (12), the two limiting holes (121) are symmetrical about the axis of the sealing barrel (22), a locking mechanism (3) for fixing the sealing barrel (22) is arranged between each limiting hole (121) and the sealing barrel (22), each locking mechanism (3) comprises a fixing frame (31) fixed on the outer wall of the sealing barrel (22), a pull rod (32) and a spring (34), the spring (34) is installed in the fixed frame (31), the pull rod (32) penetrates through the fixed frame (31), the spring (34) and the side wall of the sealing barrel (22) and then extends into the limiting hole (121), the fixed frame (31) is internally provided with an annular baffle (33) in a sliding manner, the annular baffle (33) is fixedly sleeved on the pull rod (32), and the annular baffle plate (33) is positioned between one end of the spring (34) close to the sealing cylinder (22) and the inner wall of the fixed frame (31).
2. An air pump system according to claim 1, characterized in that the connecting rod (211) is eccentrically attached to the side wall of the screen (21).
3. An air pump system according to claim 1, wherein the wedge faces of the wedge blocks are roughened to the outer wall of the drum (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010699166.2A CN111878467B (en) | 2020-07-20 | 2020-07-20 | Air pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010699166.2A CN111878467B (en) | 2020-07-20 | 2020-07-20 | Air pump system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111878467A CN111878467A (en) | 2020-11-03 |
| CN111878467B true CN111878467B (en) | 2021-08-24 |
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ID=73155012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010699166.2A Active CN111878467B (en) | 2020-07-20 | 2020-07-20 | Air pump system |
Country Status (1)
| Country | Link |
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| CN (1) | CN111878467B (en) |
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| CN107859627A (en) * | 2017-11-17 | 2018-03-30 | 高邮市大江泵业有限公司 | A kind of irrigation and water conservancy irrigation mixed-flow pump |
| CN207420928U (en) * | 2017-11-17 | 2018-05-29 | 郭考香 | A kind of filtering type dusting fan |
| CN208138161U (en) * | 2018-01-05 | 2018-11-23 | 龙南鑫坤无机新材料有限公司 | A kind of dustless centrifugal fan |
| CN108953642A (en) * | 2018-07-11 | 2018-12-07 | 王欣 | Water control valve |
| CN208887025U (en) * | 2018-10-18 | 2019-05-21 | 贵安新区英健科技有限公司 | A kind of humidifying type fresh air energy-saving ventilator |
| CN209309397U (en) * | 2019-01-15 | 2019-08-27 | 上海上龙供水设备有限公司 | Counter flow stop device drainage arrangement |
| CN209977339U (en) * | 2019-03-11 | 2020-01-21 | 江苏腾龙石化机械有限公司 | Petroleum valve capable of preventing overpressure in pipe |
| CN210397123U (en) * | 2019-08-22 | 2020-04-24 | 无锡高卓流体设备有限公司 | High-performance pipeline pump for cold and hot water delivery |
| CN210623135U (en) * | 2019-06-24 | 2020-05-26 | 江苏环宇风机科技有限公司 | Centrifugal fan capable of quickly replacing air inlet pipe |
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2020
- 2020-07-20 CN CN202010699166.2A patent/CN111878467B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859627A (en) * | 2017-11-17 | 2018-03-30 | 高邮市大江泵业有限公司 | A kind of irrigation and water conservancy irrigation mixed-flow pump |
| CN207420928U (en) * | 2017-11-17 | 2018-05-29 | 郭考香 | A kind of filtering type dusting fan |
| CN208138161U (en) * | 2018-01-05 | 2018-11-23 | 龙南鑫坤无机新材料有限公司 | A kind of dustless centrifugal fan |
| CN108953642A (en) * | 2018-07-11 | 2018-12-07 | 王欣 | Water control valve |
| CN208887025U (en) * | 2018-10-18 | 2019-05-21 | 贵安新区英健科技有限公司 | A kind of humidifying type fresh air energy-saving ventilator |
| CN209309397U (en) * | 2019-01-15 | 2019-08-27 | 上海上龙供水设备有限公司 | Counter flow stop device drainage arrangement |
| CN209977339U (en) * | 2019-03-11 | 2020-01-21 | 江苏腾龙石化机械有限公司 | Petroleum valve capable of preventing overpressure in pipe |
| CN210623135U (en) * | 2019-06-24 | 2020-05-26 | 江苏环宇风机科技有限公司 | Centrifugal fan capable of quickly replacing air inlet pipe |
| CN210397123U (en) * | 2019-08-22 | 2020-04-24 | 无锡高卓流体设备有限公司 | High-performance pipeline pump for cold and hot water delivery |
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| Publication number | Publication date |
|---|---|
| CN111878467A (en) | 2020-11-03 |
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