CN118110669A - Variable capacity impeller pump - Google Patents
Variable capacity impeller pump Download PDFInfo
- Publication number
- CN118110669A CN118110669A CN202410539626.3A CN202410539626A CN118110669A CN 118110669 A CN118110669 A CN 118110669A CN 202410539626 A CN202410539626 A CN 202410539626A CN 118110669 A CN118110669 A CN 118110669A
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- China
- Prior art keywords
- variable
- rotating shaft
- sliding
- capacity
- cylindrical barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000002955 isolation Methods 0.000 claims description 9
- 238000007790 scraping Methods 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 15
- 239000000428 dust Substances 0.000 abstract description 12
- 230000007774 longterm Effects 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 description 6
- 210000002105 tongue Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a variable-capacity impeller pump, which belongs to the technical field of impeller pumps, wherein two ends of a variable-capacity cylinder are in sealing fit with the inner wall of a shell, and the variable-capacity cylinder can longitudinally slide; a rotating shaft is rotatably arranged in the variable-capacity cylindrical barrel, the rotating shaft is coaxially connected to the first motor, and a variable-capacity cavity is formed between the rotating shaft and the variable-capacity cylindrical barrel at intervals; a plurality of slots are uniformly arranged at intervals in the circumferential direction of the rotating shaft, the slots extend along the transverse direction, blades are inserted in the slots in a sliding manner, the blades are connected to the bottom of the slots through elastic connecting devices, and the outer ends of the blades are abutted with the inner wall of the variable-volume cylindrical barrel; the outer end of the blade is provided with an inclined plane, the direction of the inclined plane is consistent with the rotation direction of the rotating shaft, the inclined plane is provided with an ash suction port, and the ash suction port is communicated with a built-in cavity arranged in the blade. The device can collect dust and impurities on the inner wall of the variable-volume cylinder into the built-in cavity from the dust suction port, and prevent the long-term residue of the impurities in the variable-volume cavity from affecting the inner wall or blades of the variable-volume cylinder.
Description
Technical Field
The invention belongs to the technical field of impeller pumps, and particularly relates to a variable-capacity impeller pump.
Background
The impeller pump is mainly used for conveying air and liquid, is generally used in the chemical industry, the food processing industry, the air conditioning industry, the refrigeration industry, the water treatment industry and the like, and is a high-efficiency, safe and reliable conveying tool. The existing impeller pump has the defects that impurities in the air are easy to remain in the pump body, and if the impurities cannot be cleaned timely, the inner wall and the blades of the pump body are easy to damage. If the pump body is directly disassembled and cleaned, time and labor are wasted, and the precision of the equipment is reduced.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a variable displacement vane pump that can solve the above-mentioned problems.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The invention relates to a variable capacity impeller pump, which comprises a shell, wherein a variable capacity cylinder is slidably arranged in the shell, the axis of the variable capacity cylinder is transversely arranged, two ends of the variable capacity cylinder are in sealing fit with the inner wall of the shell, and the variable capacity cylinder can longitudinally slide; a rotating shaft is rotatably arranged in the variable-capacity cylindrical barrel and is coaxially connected to the first motor, and a variable-capacity cavity is formed between the rotating shaft and the variable-capacity cylindrical barrel at intervals; a plurality of slots are uniformly arranged at intervals in the circumferential direction of the rotating shaft, the slots extend along the transverse direction, blades are inserted in the slots in a sliding manner, the blades are connected to the bottom of the slots through elastic connecting devices, and the outer ends of the blades are abutted to the inner wall of the variable-volume cylindrical barrel; the outer end of the blade is provided with an inclined plane, the direction of the inclined plane is consistent with the rotation direction of the rotating shaft, the inclined plane is provided with an ash suction port, and the ash suction port is communicated with a built-in cavity formed in the blade.
Further, the bottom of the built-in cavity is connected with a guide channel, a guide pipe is fixed on the inner side of the rotating shaft, one end of the guide pipe is arranged in the guide channel, and the other end of the guide pipe is connected to a central channel formed in the center of the rotating shaft.
Further, the middle part of direction passageway is provided with isolation component, isolation component includes a plurality of diaphragms of evenly distributed along circumference, the diaphragm adopts flexible material to make, the diaphragm is fan-shaped, the excircle part of diaphragm is connected with the inner wall of direction passageway, and each diaphragm combination is circular.
Further, the mounting groove has been seted up in the direction passageway, the mounting hole has been seted up to the bottom of mounting groove, install the inserted bar in the mounting hole, the terminal surface of inserted bar is fixed with a plurality of inserts the tongue along circumferencial direction an organic wholely, the outer end of inserting the tongue is formed with the arch, the excircle of diaphragm seted up with the jack that the inserted bar corresponds, the drill way department of jack be provided with the spacing ring that the arch corresponds.
Further, the central channel is connected with a negative pressure adsorption device.
Further, a rack is longitudinally arranged in the shell, two racks are separated to form a space for limiting sliding of the variable-capacity cylindrical barrel, the rack is meshed with a gear, the gear is connected to the output end of a second motor, and the second motor is fixed on the variable-capacity cylindrical barrel.
Further, the spout has been seted up along transversely to the surface of blade, sliding fit has slider in the spout, slider is connected with the scraper blade, the scraper blade is with the surface engagement of blade, the lower extreme rotation of scraper blade is connected with the gyro wheel, the domatic has been seted up on the lateral wall of slot, be provided with on the domatic with gyro wheel complex elastic support device.
Further, the sliding device comprises a sliding rod fixed with the scraping plate, a rotating wheel is rotatably matched with the outer side of the sliding rod, and the rotating wheel is rotatably matched in the sliding groove.
Further, the elastic supporting device comprises a supporting plate which is arranged at intervals with the slope surface, and a plurality of springs are uniformly connected between the supporting plate and the slope surface at intervals.
The invention has the beneficial effects that:
According to the variable-capacity impeller pump disclosed by the invention, the rotating shaft drives the blades to rotate, and the blades are in contact with the inner wall of the variable-capacity cylindrical barrel at any time under the action of centrifugal force, so that dust and impurities on the inner wall of the variable-capacity cylindrical barrel can be collected into the built-in cavity from the dust suction port, and the influence of long-term residue of the impurities in the variable-capacity cavity on the inner wall of the variable-capacity cylindrical barrel or the blades is avoided.
In the impeller pump disclosed by the invention, impurities are generally attached to the inner circumferential surface of the variable-volume cylinder under the action of centrifugal force, so that the inclined plane is arranged to be consistent with the rotation direction of the rotating shaft, and the dust suction port is formed in the inclined plane, thereby being convenient for collecting dust or impurities and being more thorough in cleaning. The device can clean the inside of the device without disassembling the device, is simple, and has higher practicability and convenience.
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. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is a schematic view of the construction of a vane pump of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a schematic view of a blade configuration;
FIG. 4 is an enlarged view of FIG. 3 at B;
FIG. 5 is a schematic illustration of the arrangement of the membrane;
fig. 6 is a schematic structural view of the elastic supporting device.
The figures are marked as follows: the device comprises a shell 1, a variable-volume cylindrical barrel 2, a rotating shaft 3, a first motor 4, a variable-volume cavity 5, a slot 6, a blade 7, an elastic connecting device 8, an inclined surface 9, a dust suction port 10, a built-in cavity 11, a guide channel 12, a guide pipe 13, a central channel 14, an isolation assembly 15, a diaphragm 16, a mounting groove 17, a mounting hole 18, a plug rod 19, a plug tongue 20, a bulge 21, a plug hole 22, a limiting ring 23, a negative pressure adsorption device 24, a rack 25, a gear 26, a second motor 27, a chute 28, a scraping plate 29, a roller 30, a slope 31, a slide bar 32, a rotating wheel 33, a support plate 34 and a spring 35.
Detailed Description
As shown in fig. 1 to 6, the variable capacity impeller pump disclosed by the invention comprises a casing 1, wherein the casing 1 is square, a variable capacity cylindrical barrel 2 is slidably arranged in the casing 1, the variable capacity cylindrical barrel 2 is cylindrical, and the axis of the variable capacity cylindrical barrel 2 is arranged along the transverse direction, namely, is perpendicular to the paper plane direction of fig. 1. The two ends of the positive-displacement cylinder are in sealing fit with the inner wall of the shell 1, and meanwhile the positive-displacement cylinder 2 can slide longitudinally; a rotating shaft 3 is rotatably arranged in the variable-capacity cylindrical barrel 2, the rotating shaft 3 is coaxially connected to a first motor 4, and a variable-capacity cavity 5 is formed between the rotating shaft 3 and the variable-capacity cylindrical barrel 2 at intervals; because the rotating shaft 3 is fixed, when the variable-volume cylindrical barrel 2 slides along the longitudinal direction, the variable volume of the variable volume cavity 5 can be realized, the rotating shaft 3 drives the blades 7 to rotate, and under the pressure effect of variable volume, the air inlet and the air exhaust are realized through the first interface and the second interface which are connected with the variable volume cavity 5.
Specifically, a plurality of slots 6 are uniformly arranged at intervals in the circumferential direction of the rotating shaft 3, the slots 6 are uniformly arranged along the circumferential direction of the rotating shaft 3, the length direction of each slot 6 is along the transverse direction, blades 7 are inserted in the slots 6 in a sliding manner, the blades 7 are straight pieces, the inner ends of the blades 7 are connected to the bottom of the slots 6 through elastic connecting devices 8, and the outer ends of the blades 7 are abutted to the inner wall of the variable-volume cylindrical barrel 2; the outer ends of the blades 7 are formed with inclined surfaces 9, and the inclined surfaces 9 are oriented in accordance with the rotation direction of the rotating shaft 3, i.e., the rotating shaft 3 rotates in a clockwise direction in fig. 1. The inclined plane 9 is provided with an ash suction port 10, and the ash suction port 10 is communicated with a built-in cavity 11 arranged in the blade 7. The rotating shaft 3 drives the blades 7 to rotate, and the blades 7 are in contact with the inner wall of the variable-capacitance cylindrical drum 2 at any moment under the action of centrifugal force, so that dust and impurities on the inner wall of the variable-capacitance cylindrical drum 2 can be collected into the built-in cavity 11 from the dust suction port 10, and the influence of long-term residue of the impurities in the variable-capacitance cavity 5 on the inner wall of the variable-capacitance cylindrical drum 2 or the blades 7 is avoided.
In this embodiment, the bottom of the internal cavity 11 is connected with a guide channel 12, the guide channel 12 is also opened at the inner side of the blade 7, and the section of the guide channel 12 is circular. A guide pipe 13 is fixed on the inner side of the rotating shaft 3, one end of the guide pipe 13 is arranged in the guide channel 12, and the other end of the guide pipe 13 is connected to a central channel 14 formed in the center of the rotating shaft 3. Through setting up pipe 13, can be with the impurity in the built-in chamber 11 leading-in central passageway 14 through direction passageway 12 in, play the effect of unifying the collection, make things convenient for follow-up concentrated clearance.
In this embodiment, the middle part of the guide channel 12 is provided with an isolation component 15, and the isolation component 15 is used for isolating the middle part of the guide channel 12. The isolating component 15 comprises a plurality of membranes 16 which are uniformly distributed along the circumference, the membranes 16 are made of flexible materials, the membranes 16 are in a sector shape, the outer circle parts of the membranes 16 are connected with the inner wall of the guide channel 12, and each membrane 16 is combined into a round shape. When the positive-displacement cylinder 2 is in the neutral position, the diaphragms 16 cooperate with each other under the action of their own elastic force to close the guide channel 12, and when the conduit 13 extends from the isolating component 15, the guide channel 12 can communicate with the central channel 14 through the conduit 13.
When the positive-displacement cylindrical drum 2 moves leftwards, the right area of the positive-displacement cylindrical drum 2, which is separated from the rotating shaft 3, becomes smaller, and the right area is subjected to positive pressure, so that the second port is exhausted. At the same time the right vane 7 is retracted into the socket 6 by the action of the inner wall surface of the positive-displacement cylinder 2, the vane 7 and the partition member 15 connected thereto are displaced inwardly with respect to the conduit 13, whereby the conduit 13 can be extended from the partition member 15, and whereby impurities in the conduit 13 and in the central passage 14 can be discharged from the central passage 14 by the action of the positive pressure.
When the positive-displacement cylindrical drum 2 moves rightwards, the right area of the positive-displacement cylindrical drum 2, which is separated from the rotating shaft 3, is enlarged, the right area is acted by negative pressure, and the second interface sucks air. At the same time, the blade 7 on the right side is supported by the elastic connecting device 8 to extend outwards, the blade 7 and the isolation assembly 15 connected with the blade are displaced inwards relative to the guide tube 13, and the guide tube 13 can be retracted from the isolation assembly 15, so that impurities in the guide tube 13 and the central channel 14 are prevented from being thrown out from the guide channel 12.
In this embodiment, a mounting groove 17 is formed in the guide channel 12, a mounting hole 18 is formed at the bottom of the mounting groove 17, a plug rod 19 is mounted in the mounting hole 18, a plurality of plug tongues 20 are integrally fixed on the end surface of the plug rod 19 along the circumferential direction, a protrusion 21 is formed at the outer end of the plug tongue 20, a jack 22 corresponding to the plug rod 19 is formed at the outer circle of the diaphragm 16, and a limiting ring 23 corresponding to the protrusion 21 is arranged at the orifice of the jack 22. After the diaphragm 16 is installed in the installation groove 17, the inserting tongue 20 can penetrate into the inserting hole 22 through the arrangement of the inserting hole 22 on the outer circle of the diaphragm 16, the diaphragm 16 is limited through the cooperation of the bulge 21 and the limiting ring 23, and the diaphragm 16 is convenient to insert. In the embodiment of the present invention, the negative pressure adsorption device 24 is connected to the central channel 14, so that negative pressure adsorption force can be additionally provided, and impurities or dust can be conveniently discharged.
In this embodiment, a rack 25 is longitudinally disposed in the housing 1, two racks 25 are spaced apart to form a space for sliding limitation of the variable-capacity cylindrical barrel 2, the rack 25 is meshed with a gear 26, the gear 26 is connected to an output end of a second motor 27, and the second motor 27 is fixed on the variable-capacity cylindrical barrel 2. The second motor 27 drives the gear 26 to rotate, and the gear 26 drives the rack 25 meshed with the gear 26 to move, so that the longitudinal displacement of the variable-capacitance cylinder 2 is realized, the control is convenient, and the purpose of automatic variable capacitance can be realized.
In this embodiment, a sliding groove 28 is formed in the surface of the blade 7 along the transverse direction, a sliding device is slidably matched with the sliding groove 28, the sliding device is connected with a scraper 29, the scraper 29 is matched with the surface of the blade 7, a roller 30 is rotatably connected to the lower end of the scraper 29, a slope 31 is formed on the side wall of the slot 6, and an elastic supporting device matched with the roller 30 is arranged on the slope 31. When the inner wall of the positive-displacement cylinder 2 abuts against the blade 7 and the blade 7 is driven to slide in the slot 6 from outside to inside, the slope 31 can also drive the scraping plate 29 to move transversely so as to scrape off dust on the surface of the blade 7 and prevent dust or impurities from accumulating on the blade 7.
In this embodiment, the sliding device includes a sliding rod 32 fixed to the scraper 29, and a rotating wheel 33 is rotatably fitted on the outer side of the sliding rod 32, and the rotating wheel 33 is rotatably fitted in the chute 28. By providing the swivel wheel 33, the sliding device can be more smoothly matched with the chute 28. The elastic supporting device comprises a supporting plate 34 which is arranged at intervals from the slope surface 31, and a plurality of springs 35 are uniformly connected between the supporting plate 34 and the slope surface 31 at intervals. Because the chute 28 may have processing errors, the surface of the supporting plate 34 is abutted with the roller 30, so that a flexible supporting mode of the roller 30 is realized, the possibility of blocking when the sliding device moves in the chute 28 is reduced, and the scraping operation of the scraper 29 can be smoother.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (9)
1. A positive displacement vane pump, characterized by: the variable-volume cylinder comprises a shell (1), wherein a variable-volume cylinder (2) is arranged in the shell (1) in a sliding manner, the axis of the variable-volume cylinder (2) is arranged along the transverse direction, two ends of the variable-volume cylinder are in sealing fit with the inner wall of the shell (1), and the variable-volume cylinder (2) can slide along the longitudinal direction; a rotating shaft (3) is rotationally arranged in the variable-capacitance cylindrical barrel (2), the rotating shaft (3) is coaxially connected to a first motor (4), and a variable-capacitance cavity (5) is formed between the rotating shaft (3) and the variable-capacitance cylindrical barrel (2) at intervals; a plurality of slots (6) are uniformly arranged at intervals in the circumferential direction of the rotating shaft (3), the slots (6) extend along the transverse direction, blades (7) are inserted in the slots (6) in a sliding mode, the blades (7) are connected to the bottom of the slots (6) through elastic connecting devices (8), and the outer ends of the blades (7) are abutted to the inner wall of the variable-capacity cylindrical barrel (2); the outer end of the blade (7) is provided with an inclined plane (9), the direction of the inclined plane (9) is consistent with the rotation direction of the rotating shaft (3), the inclined plane (9) is provided with an ash suction port (10), and the ash suction port (10) is communicated with a built-in cavity (11) formed in the blade (7).
2.A positive displacement vane pump as claimed in claim 1, wherein: the bottom of the built-in cavity (11) is connected with a guide channel (12), a guide pipe (13) is fixed on the inner side of the rotating shaft (3), one end of the guide pipe (13) is arranged in the guide channel (12), and the other end of the guide pipe (13) is connected to a central channel (14) formed in the center of the rotating shaft (3).
3. A positive displacement vane pump as claimed in claim 2, wherein: the middle part of direction passageway (12) is provided with isolation component (15), isolation component (15) are including a plurality of diaphragms (16) of evenly distributed along circumference, diaphragm (16) adopt flexible material to make, diaphragm (16) are fan-shaped, the excircle part of diaphragm (16) is connected with the inner wall of direction passageway (12), and each diaphragm (16) combination is circular.
4. A positive-displacement vane pump as claimed in claim 3, wherein: the utility model discloses a diaphragm, including guide channel (12), mounting groove (17) have been seted up in guide channel (12), mounting hole (18) have been seted up to the bottom of mounting groove (17), install inserted bar (19) in mounting hole (18), the terminal surface of inserted bar (19) is fixed with a plurality of inserts tongue (20) along circumferencial direction an organic whole, the outer end of inserting tongue (20) is formed with protruding (21), the excircle of diaphragm (16) seted up with jack (22) that inserted bar (19) correspond, the drill way department of jack (22) be provided with spacing ring (23) that protruding (21) correspond.
5. A positive displacement vane pump as claimed in claim 2, wherein: the central channel (14) is connected with a negative pressure adsorption device (24).
6. A positive displacement vane pump as claimed in claim 1, wherein: the device is characterized in that racks (25) are longitudinally arranged in the shell (1), two racks (25) are separated to form a sliding limit interval for the variable-capacity cylindrical barrel (2), the racks (25) are meshed with a gear (26), the gear (26) is connected to the output end of a second motor (27), and the second motor (27) is fixed on the variable-capacity cylindrical barrel (2).
7. A positive-displacement vane pump as claimed in any one of claims 1 to 6 wherein: the sliding device is characterized in that a sliding groove (28) is formed in the surface of the blade (7) in the transverse direction, a sliding device is in sliding fit with the sliding groove (28), the sliding device is connected with a scraping plate (29), the scraping plate (29) is in surface fit with the blade (7), a roller (30) is rotatably connected to the lower end of the scraping plate (29), a slope (31) is formed in the side wall of the slot (6), and an elastic supporting device matched with the roller (30) is arranged on the slope (31).
8. A positive displacement vane pump as claimed in claim 7, wherein: the sliding device comprises a sliding rod (32) fixed with the scraping plate (29), a rotating wheel (33) is rotatably matched with the outer side of the sliding rod (32), and the rotating wheel (33) is rotatably matched in the sliding groove (28).
9. A positive displacement vane pump as claimed in claim 7, wherein: the elastic supporting device comprises a supporting plate (34) which is arranged at intervals with the slope (31), and a plurality of springs (35) are uniformly and alternately connected between the supporting plate (34) and the slope (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410539626.3A CN118110669A (en) | 2024-04-30 | 2024-04-30 | Variable capacity impeller pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410539626.3A CN118110669A (en) | 2024-04-30 | 2024-04-30 | Variable capacity impeller pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118110669A true CN118110669A (en) | 2024-05-31 |
Family
ID=91212389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410539626.3A Pending CN118110669A (en) | 2024-04-30 | 2024-04-30 | Variable capacity impeller pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118110669A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102132043A (en) * | 2008-07-10 | 2011-07-20 | 温德富尔·米勒斯有限公司 | Generation and use of high pressure air |
| CN102635409A (en) * | 2011-02-10 | 2012-08-15 | 年启贺 | Rotating machine |
| CN205991013U (en) * | 2016-08-24 | 2017-03-01 | 上海广韩真空科技有限公司 | A kind of vacuum pump structure |
| JP3217790U (en) * | 2018-06-21 | 2018-08-30 | 株式会社ムラコシ | Dust collector fan and dust collector |
| CN212803595U (en) * | 2020-08-06 | 2021-03-26 | 浙江斯柯特新能源科技有限公司 | Vacuum pump rotor draws in device in |
| CN112747351A (en) * | 2021-02-20 | 2021-05-04 | 深圳市俏夕阳贸易有限公司 | Range hood capable of automatically cleaning impeller and oil filter grid |
| CN219691753U (en) * | 2023-03-13 | 2023-09-15 | 浙江求是真空设备制造有限公司 | High-efficient dust removal vacuum pump |
-
2024
- 2024-04-30 CN CN202410539626.3A patent/CN118110669A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102132043A (en) * | 2008-07-10 | 2011-07-20 | 温德富尔·米勒斯有限公司 | Generation and use of high pressure air |
| CN102635409A (en) * | 2011-02-10 | 2012-08-15 | 年启贺 | Rotating machine |
| CN205991013U (en) * | 2016-08-24 | 2017-03-01 | 上海广韩真空科技有限公司 | A kind of vacuum pump structure |
| JP3217790U (en) * | 2018-06-21 | 2018-08-30 | 株式会社ムラコシ | Dust collector fan and dust collector |
| CN212803595U (en) * | 2020-08-06 | 2021-03-26 | 浙江斯柯特新能源科技有限公司 | Vacuum pump rotor draws in device in |
| CN112747351A (en) * | 2021-02-20 | 2021-05-04 | 深圳市俏夕阳贸易有限公司 | Range hood capable of automatically cleaning impeller and oil filter grid |
| CN219691753U (en) * | 2023-03-13 | 2023-09-15 | 浙江求是真空设备制造有限公司 | High-efficient dust removal vacuum pump |
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