CN114233638A - Large-traffic low cavitation slurry pump structure - Google Patents
Large-traffic low cavitation slurry pump structure Download PDFInfo
- Publication number
- CN114233638A CN114233638A CN202111559486.9A CN202111559486A CN114233638A CN 114233638 A CN114233638 A CN 114233638A CN 202111559486 A CN202111559486 A CN 202111559486A CN 114233638 A CN114233638 A CN 114233638A
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- Prior art keywords
- impeller
- pump
- pressure
- main shaft
- lining
- 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
- 239000002002 slurry Substances 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims description 14
- 238000004523 catalytic cracking Methods 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000411 inducer Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/06—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0011—Control, e.g. regulation, of pumps, pumping installations or systems by using valves by-pass valves
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2294—Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
Abstract
The invention discloses a large-flow low-cavitation slurry oil pump structure which comprises a bearing body, a pump cover, a pump body, a main shaft, an impeller, a high-pressure pipe, a temperature sensor and a pressure sensor, wherein one side of the pump cover is fixedly connected with the bearing body; the pump body is fixedly connected with the other side of the pump cover, the upper part of the pump body is provided with a discharge port, and a lining is arranged in the pump body; the main shaft is rotatably supported by the bearing body, and one end of the main shaft penetrates through the pump cover and extends into the lining; the impeller is installed on the main shaft and is located the lining, and pump body one side is seted up the inlet and is communicated with the sunction inlet of impeller, and the impeller includes blade, back shroud, front shroud, and the blade leading edge of blade is provided with the extension section.
Description
Technical Field
The invention relates to the technical field of centrifugal pumps, in particular to a large-flow low-cavitation slurry pump structure.
Background
The cavitation slurry pump is the main equipment for conveying the bottom slurry in the catalytic cracking device, the requirement is higher than that of the common slurry pump, the catalytic cracking (DCC) is different from the catalytic cracking (FCC), the raw material of the catalytic cracking process is lighter than the catalytic cracking component, and the corresponding NPSHA value is smaller, so the upper-lower cavitation (NPSHr) of the model selection becomes an important index. The conventional method for reducing the cavitation amount is to additionally arrange an inducer on a liquid inlet to reduce the cavitation allowance, and the inducer is additionally arranged on a main shaft, so that the defect that the length of a cantilever of the shaft is increased, the strength and the rigidity of a rotor are influenced, the operation is unstable, and more faults exist; meanwhile, the liquid inlet is a low-pressure end and is communicated with the atmosphere, and the temperature and the pressure of the liquid inlet are influenced by the environment and the dynamic change of the liquid level, so that the pressure and the temperature of the suction inlet are changed, the condition of low cavitation erosion amount is not favorably maintained, and particularly, when the pressure is too low, the impeller generates serious cavitation erosion, so that the impeller is damaged and loses efficacy.
Disclosure of Invention
The invention aims to provide a high-flow low-cavitation slurry pump structure, wherein the front edge of a blade of an impeller extends forwards towards a suction inlet, so that the area and the inner side suction pressure of the blade are increased, the pressure of the working surface and the back surface of the blade tends to be uniform, and the cavitation allowance of a pump is reduced; a high-pressure pipe is led out from the discharge port to control the high-pressure liquid flow in the discharge port to be fed back to the suction port through a flow control valve, the pressure at the suction port is dynamically supplemented, the cavitation erosion amount is obviously reduced, the strength and the rigidity of the rotor are good, the operation is stable, and the problems in the prior art are solved.
In order to achieve the purpose, the invention provides the following technical scheme: large-traffic low cavitation slurry pump structure includes:
the bearing body (1) is provided with a bearing,
one side of the pump cover 3 is fixedly connected with the bearing body 1;
the pump body 5 is fixedly connected with the other side of the pump cover 3, a discharge port 6 is formed in the upper portion of the pump body 5, and a lining 4 is arranged in the pump body 5;
the main shaft 2 is rotatably supported by the bearing body 1, and one end of the main shaft 2 penetrates through the pump cover 3 and extends into the lining 4;
the impeller 15 is arranged on the main shaft 2 and positioned in the lining 4, a liquid inlet 11 is formed in one side of the pump body 5 and is communicated with a suction inlet 21 of the impeller 15, the impeller 15 comprises a blade 16, a rear cover plate 17 and a front cover plate 18, and an extension section 18 is arranged on a blade front edge 20 of the blade 16;
if the intersection line of the connection between the blade front edge 20 and the front shroud 18 is an outer intersection line 22, and the intersection line of the connection between the blade front edge 20 and the rear shroud 17 is an inner intersection line 23, the extension section 18 is a sector scanning area that takes the outer intersection line 22 as a fixed end, the inner intersection line 23 as a moving end, the blade front edge 20 as a contour, and twists toward the axis of the impeller 15, and the extension section 18 is smoothly connected with the blade 16;
the high-pressure pipe 7 is led out from the discharge port 6 and is connected with one end of a distribution pipe 9 through a flow control valve 18, a first pressure compensating pipe 10 is communicated with the other end of the distribution pipe 9, and the tail end of the first pressure compensating pipe 10 is opened on the inner wall of the lining 4 and is positioned in front of the suction port 21;
the temperature sensor 12 is arranged in the liquid inlet 11;
and a pressure sensor 13 provided on an inner wall of the liner 4 and located in front of the suction port 21.
Further: the impeller is characterized by further comprising a nut 24, wherein the inner side of the extension section 18 is provided with a cutting section 25, the cutting section 25 on the inner side of the extension section 18 of all the blades 16 forms a clearance cavity capable of accommodating the nut 24, and the nut 24 is screwed on the end part of the main shaft 2 and used for fixing the impeller 15 on the main shaft 2.
Further: the distribution pipe is characterized by further comprising a second pressure compensating pipe 14, wherein one end of the second pressure compensating pipe 14 is connected to the distribution pipe 9 in a bypass mode, the other end of the second pressure compensating pipe 14 is opened on the inner wall of the lining 4 and is positioned in front of the suction port 21, and the opening of the tail end of the second pressure compensating pipe 14 and the opening of the tail end of the first pressure compensating pipe 10 are symmetrical relative to the axis of the impeller 15.
Further: the device is characterized by further comprising an electric control system, wherein the temperature sensor 12, the pressure sensor 13 and the flow control valve 18 are electrically connected with the electric control system, and the electric control system controls the opening degree of the flow control valve 18 according to signals given by the temperature sensor 12 and the pressure sensor 13.
The invention has the beneficial effects that: according to the high-flow low-cavitation slurry pump structure, the front edge of the blade of the impeller extends forwards towards the suction inlet, so that the area and the inner side suction pressure of the blade are increased, the pressure of the working surface and the back surface of the blade tends to be uniform, and the cavitation allowance of the pump is reduced; a high-pressure pipe is led out from the discharge port to control the high-pressure liquid flow in the discharge port to be returned to the suction port through a flow control valve, the pressure at the suction port is dynamically supplemented, the cavitation erosion amount is obviously reduced, the strength and the rigidity of the rotor are good, and the operation is stable.
Drawings
FIG. 1 is a sectional schematic view of the structure of a large-flow low-cavitation slurry pump according to the present invention.
Fig. 2 is a schematic view of the impeller structure of the present invention.
Fig. 3 is a perspective view of the impeller structure of the present invention.
Fig. 4 is a sectional view showing the structure of a blade of the impeller of the present invention.
Fig. 5 is a schematic view of a conventional impeller structure.
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. 1-4, the structure of the high flow low cavitation slurry pump includes: the pump comprises a bearing body 1, a pump cover 3, a pump body 5, a main shaft 2, an impeller 15, a high-pressure pipe 7, a temperature sensor 12 and a pressure sensor 13, wherein one side of the pump cover 3 is fixedly connected with the bearing body 1; the pump body 5 is fixedly connected with the other side of the pump cover 3, the upper part of the pump body 5 is provided with a discharge port 6, and the pump body 5 is internally provided with a lining 4; the main shaft 2 is rotatably supported by the bearing body 1, and one end of the main shaft 2 penetrates through the pump cover 3 and extends into the lining 4; the impeller 15 is arranged on the main shaft 2 and positioned in the lining 4, a liquid inlet 11 is formed in one side of the pump body 5 and is communicated with a suction inlet 21 of the impeller 15, the impeller 15 comprises blades 16, a rear cover plate 17 and a front cover plate 18, and the front edges 20 of the blades 16 are provided with extension sections 18;
referring to fig. 4 and 5, assuming that an intersection line of a joint between the blade front edge 20 and the front shroud 18 is an outer intersection line 22, and an intersection line of a joint between the blade front edge 20 and the rear shroud 17 is an inner intersection line 23, the extension section 18 is a sector scanning area which takes the outer intersection line 22 as a fixed end, takes the blade front edge 20 as a moving end, takes the inner intersection line 23 as a moving end, twists toward the axis of the impeller 15, and is smoothly connected with the blade 16;
the high-pressure pipe 7 is led out from the discharge port 6 and is connected with one end of the distribution pipe 9 through the flow control valve 18, the other end of the distribution pipe 9 is communicated with a first pressure compensating pipe 10, and the tail end of the first pressure compensating pipe 10 is opened on the inner wall of the lining 4 and is positioned in front of the suction port 21; the temperature sensor 12 is arranged in the liquid inlet 11; the pressure sensor 13 is provided on the inner wall of the liner 4 in front of the suction port 21.
Preferably: the impeller is characterized by further comprising a nut 24, wherein the extension section 18 is internally provided with a cut-out section 25, the cut-out sections 25 on the inner sides of the extension sections 18 of all the blades 16 form a clearance cavity capable of accommodating the nut 24, and the nut 24 is screwed on the end part of the main shaft 2 and is used for fixing the impeller 15 on the main shaft 2.
Preferably: the impeller pressure-compensating device further comprises a second pressure-compensating pipe 14, one end of the second pressure-compensating pipe 14 is connected to the distribution pipe 9 in a bypass mode, the other end of the second pressure-compensating pipe 14 is opened on the inner wall of the lining 4 and is located in front of the suction port 21, the opening of the second pressure-compensating pipe and the opening of the tail end of the first pressure-compensating pipe 10 are symmetrical relative to the axis of the impeller 15, and through the arrangement, pressure of the suction port 21 is distributed uniformly, and stability of the impeller 15 in operation is kept.
Preferably: the device also comprises an electric control system (not shown), wherein the temperature sensor 12, the pressure sensor 13 and the flow control valve 18 are electrically connected with the electric control system, the electric control system controls the opening degree of the flow control valve 18 according to signals given by the temperature sensor 12 and the pressure sensor 13, the temperature and the pressure of the liquid at the suction inlet 21 are monitored in real time through the temperature sensor 12 and the pressure sensor 13, the temperature and the pressure values are converted into electric signals to be transmitted to the electric control system, and the electric control system dynamically adjusts the opening degree of the flow control valve 18 according to the setting, so that the pressure at the suction inlet 21 is kept in the set range, and the cavitation amount is remarkably reduced.
According to the high-flow low-cavitation slurry pump structure, the front edges of the blades 16 of the impeller 15 extend forwards towards the suction port 21 and are twisted towards the axis of the impeller 15, so that the area and the inner side suction pressure of the blades 16 are increased, the working surface and the back surface pressure of the blades 16 tend to be uniform, and the cavitation allowance of a pump is reduced; a high-pressure pipe 7 is led out from the discharge port 6, the high-pressure liquid flow in the discharge port 6 is controlled by the flow control valve 18 and is fed back to the suction port 21, the pressure at the suction port 21 is dynamically supplemented, the cavitation erosion amount is obviously reduced, the strength and the rigidity of the rotor are good, the operation is stable, and the stable service life of the pump is prolonged.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
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 (4)
1. The utility model provides a large-traffic low cavitation slurry pump structure which characterized in that includes:
a bearing body (1),
one side of the pump cover (3) is fixedly connected with the bearing body (1);
the pump body (5) is fixedly connected with the other side of the pump cover (3), a discharge port (6) is formed in the upper portion of the pump body (5), and a lining (4) is arranged in the pump body (5);
the main shaft (2) is rotatably supported by the bearing body (1), and one end of the main shaft (2) penetrates through the pump cover (3) and extends into the lining (4);
the impeller (15) is arranged on the main shaft (2) and is positioned in the lining (4), a liquid inlet (11) is formed in one side of the pump body (5) and is communicated with a suction inlet (21) of the impeller (15), the impeller (15) comprises blades (16), a rear cover plate (17) and a front cover plate (18), and the front edges (20) of the blades (16) are provided with extension sections (18);
setting the intersection line of the joint of the blade front edge (20) and the front cover plate (18) as an outer intersection line (22), setting the intersection line of the joint of the blade front edge (20) and the rear cover plate (17) as an inner intersection line (23), setting the extension section (18) as a sector scanning area which takes the outer intersection line (22) as a fixed end, the inner intersection line (23) as a movable end, the blade front edge (20) as a contour and twists towards the axis of the impeller (15), and smoothly connecting the extension section (18) and the blade (16);
the high-pressure pipe (7) is led out from the discharge port (6) and is connected with one end of the distribution pipe (9) through a flow control valve (18), the other end of the distribution pipe (9) is communicated with a first pressure compensating pipe (10), and the tail end of the first pressure compensating pipe (10) is opened on the inner wall of the lining (4) and is positioned in front of the suction port (21);
the temperature sensor (12) is arranged in the liquid inlet (11);
and a pressure sensor (13) which is provided on the inner wall of the liner (4) and is positioned in front of the suction port (21).
2. The high flow low cavitation slurry pump structure of claim 1, characterized in that: the impeller is characterized by further comprising a nut (24), wherein a cutting segment (25) is arranged on the inner side of the extension segment (18), all the cutting segments (25) on the inner side of the extension segment (18) of the blade (16) form a cavity capable of accommodating the nut (24), and the nut (24) is screwed on the end part of the main shaft (2) and used for fixing the impeller (15) on the main shaft (2).
3. The high flow low cavitation slurry pump structure of claim 1, characterized in that: the distribution pipe is characterized by further comprising a second pressure compensating pipe (14), wherein one end of the second pressure compensating pipe (14) is connected to the distribution pipe (9) in a bypass mode, the other end of the second pressure compensating pipe (14) is opened on the inner wall of the lining (4), is positioned in front of the suction port (21) and is symmetrical to the tail end opening of the first pressure compensating pipe (10) relative to the axis of the impeller (15).
4. The high flow low cavitation slurry pump structure of claim 1, characterized in that: the device is characterized by further comprising an electric control system, wherein the temperature sensor (12), the pressure sensor (13) and the flow control valve (18) are electrically connected with the electric control system, and the electric control system controls the opening degree of the flow control valve (18) according to signals given by the temperature sensor (12) and the pressure sensor (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111559486.9A CN114233638A (en) | 2021-12-20 | 2021-12-20 | Large-traffic low cavitation slurry pump structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111559486.9A CN114233638A (en) | 2021-12-20 | 2021-12-20 | Large-traffic low cavitation slurry pump structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114233638A true CN114233638A (en) | 2022-03-25 |
Family
ID=80758941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111559486.9A Pending CN114233638A (en) | 2021-12-20 | 2021-12-20 | Large-traffic low cavitation slurry pump structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114233638A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05248385A (en) * | 1992-03-10 | 1993-09-24 | Taiheiyo Kiko Kk | Swirl impeller |
| JP2006144735A (en) * | 2004-11-24 | 2006-06-08 | Suzuki Motor Corp | Water pump |
| CN102465912A (en) * | 2010-11-15 | 2012-05-23 | 胜达因公司 | Flow vector control for high speed centrifugal pumps |
| CN103161753A (en) * | 2013-04-12 | 2013-06-19 | 上海阿波罗机械股份有限公司 | Impeller for residual heat removal pump |
| CN104613002A (en) * | 2013-11-04 | 2015-05-13 | 江苏大学 | Vortex forward-extended double blade impeller sewage pump |
| CN105927595A (en) * | 2016-06-28 | 2016-09-07 | 广州市拓道流体设备技术有限公司 | Cavitation prevention slurry pump |
| CN208417044U (en) * | 2018-04-23 | 2019-01-22 | 温州旭远电子科技有限公司 | impeller |
| CN109681474A (en) * | 2019-01-21 | 2019-04-26 | 中国科学院工程热物理研究所 | A kind of self-checking device and method inhibiting centrifugation pump cavitation |
| CN110836189A (en) * | 2018-08-15 | 2020-02-25 | 青岛海尔滚筒洗衣机有限公司 | Pump assembly and washing equipment equipped with same |
| CN210290254U (en) * | 2019-06-06 | 2020-04-10 | 南方泵业股份有限公司 | Centrifugal impeller with splitter blades |
| CN211397908U (en) * | 2020-01-17 | 2020-09-01 | 嘉利特荏原泵业有限公司 | Large-flow oil slurry pump |
| CN215170817U (en) * | 2021-04-28 | 2021-12-14 | 应若派（上海）流体技术有限公司 | Self-suction type impeller structure |
| CN219639068U (en) * | 2023-06-01 | 2023-09-05 | 嘉利特荏原泵业有限公司 | Slag circulating water pump structure with full lining |
-
2021
- 2021-12-20 CN CN202111559486.9A patent/CN114233638A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05248385A (en) * | 1992-03-10 | 1993-09-24 | Taiheiyo Kiko Kk | Swirl impeller |
| JP2006144735A (en) * | 2004-11-24 | 2006-06-08 | Suzuki Motor Corp | Water pump |
| CN102465912A (en) * | 2010-11-15 | 2012-05-23 | 胜达因公司 | Flow vector control for high speed centrifugal pumps |
| CN103161753A (en) * | 2013-04-12 | 2013-06-19 | 上海阿波罗机械股份有限公司 | Impeller for residual heat removal pump |
| CN104613002A (en) * | 2013-11-04 | 2015-05-13 | 江苏大学 | Vortex forward-extended double blade impeller sewage pump |
| CN105927595A (en) * | 2016-06-28 | 2016-09-07 | 广州市拓道流体设备技术有限公司 | Cavitation prevention slurry pump |
| CN208417044U (en) * | 2018-04-23 | 2019-01-22 | 温州旭远电子科技有限公司 | impeller |
| CN110836189A (en) * | 2018-08-15 | 2020-02-25 | 青岛海尔滚筒洗衣机有限公司 | Pump assembly and washing equipment equipped with same |
| CN109681474A (en) * | 2019-01-21 | 2019-04-26 | 中国科学院工程热物理研究所 | A kind of self-checking device and method inhibiting centrifugation pump cavitation |
| CN210290254U (en) * | 2019-06-06 | 2020-04-10 | 南方泵业股份有限公司 | Centrifugal impeller with splitter blades |
| CN211397908U (en) * | 2020-01-17 | 2020-09-01 | 嘉利特荏原泵业有限公司 | Large-flow oil slurry pump |
| CN215170817U (en) * | 2021-04-28 | 2021-12-14 | 应若派（上海）流体技术有限公司 | Self-suction type impeller structure |
| CN219639068U (en) * | 2023-06-01 | 2023-09-05 | 嘉利特荏原泵业有限公司 | Slag circulating water pump structure with full lining |
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