CN219035019U - Large chemical axial flow pump suitable for conveying particles or slurry - Google Patents
Large chemical axial flow pump suitable for conveying particles or slurry Download PDFInfo
- Publication number
- CN219035019U CN219035019U CN202223186490.8U CN202223186490U CN219035019U CN 219035019 U CN219035019 U CN 219035019U CN 202223186490 U CN202223186490 U CN 202223186490U CN 219035019 U CN219035019 U CN 219035019U
- Authority
- CN
- China
- Prior art keywords
- impeller
- inlet cover
- slurry
- pump body
- axial flow
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to the technical field of axial flow pumps, in particular to a safe and reliable large-scale chemical axial flow pump suitable for conveying particles or slurry. The front side of the impeller is provided with a flow stabilizing plate and a front impeller head, the flow stabilizing plate is processed on the inlet cover, and the front impeller head is fixedly arranged on the front end face of the impeller through a screw; the rear side of the impeller is provided with a rear impeller head and guide vanes; the guide vane is arranged on the pump body; the rear impeller head is positioned at the rear part of the impeller and is fixedly connected with the guide vane; the outside of the shaft is provided with a sheath welded on the guide vane; the impeller is positioned in the interior of the flow formed by the inlet cover with the flow stabilizing plate and the pump body with the rear impeller head, the guide vane and the sheath; a conical cavity is arranged at the mounting position of the sealing part at the rear part of the pump body; an inlet cover adjusting screw used for adjusting the gap between the inlet cover and the impeller is arranged at the assembly opening of the inlet cover and the pump body.
Description
Technical Field
The utility model relates to the technical field of axial flow pumps, in particular to a safe and reliable large-scale chemical axial flow pump suitable for conveying particles or slurry.
Background
The axial flow pump is suitable for occasions with large flow and low lift and is used for forced circulation of various easily crystallized saturated solutions of evaporation and concentration devices in the industries of alkali production, salt production, citric acid, anhydrous sodium sulphate and the like.
Currently, involving some highly viscous media containing particles or slurries, the following problems are typically encountered when the pump is running: the slurry is uneven, clusters or blocks enter the impeller, so that partial blades of the impeller are stressed unevenly, the operation is unstable, the blades are broken or the pump is blocked when serious, and the flow of the clustered or block medium after exiting the impeller is uneven, so that the efficiency is low; the bulk or block medium forms impact on the shaft after exiting the impeller, so that the pump vibrates; solid components in the medium containing particles or slurry are accumulated at the sealing part, so that the spring of the sealing part is invalid, the sealing surface is damaged, and the sealing part is easy to lose efficacy; because the impeller is fixed at the front end of the cantilever shaft, the gravity of the impeller and the shaft causes certain deflection of the shaft, so that the gap between the impeller and the inlet cover is small at the lower part and large at the upper part, the friction between the impeller and the inlet cover is easily caused at the position with small gap, the volume loss is easily caused at the position with large gap, and the efficiency of the pump is reduced.
Aiming at the problems in the prior art, the research and design of a novel large-scale chemical axial flow pump suitable for conveying particles or slurry is necessary to overcome the problems in the prior art.
Disclosure of Invention
According to the prior art, as the slurry is non-uniform and is agglomerated or blocky to enter the impeller due to the high-viscosity medium containing particles or slurry, the impeller is stressed unevenly and operates unstably, the impeller is broken or the pump is blocked when the operation is serious, and the agglomerated or blocky medium flows unevenly in the flow channel of the pump body after exiting the impeller, so that the efficiency is low; the bulk or block medium forms impact on the shaft after exiting the impeller, and causes vibration of the pump; solid components in the medium containing particles or slurry are accumulated at the sealing part, so that the spring of the sealing part is invalid, the sealing surface is damaged, and the sealing part is easy to lose efficacy; because the impeller is fixed at the front end of the cantilever shaft, the gravity of the impeller and the shaft causes the shaft to have certain deflection, the lower part of the clearance between the impeller and the inlet cover is small, the upper part of the clearance is large, the friction between the impeller and the inlet cover is easily caused at the position of the clearance is small, the volume loss is easily caused at the position of the clearance is large, and the efficiency of the pump is reduced. According to the utility model, the steady flow plate and the front impeller head are arranged at the front side of the impeller, so that the medium uniformly enters the impeller without impact, and the rear impeller head and the guide vane are arranged behind the impeller, so that the medium uniformly flows out of the impeller and flows out of the pump body; a sheath welded on the pump body is arranged on the outer circle of the shaft to protect the shaft from being impacted by a medium; the pump body is provided with a conical cavity at the sealing position, solid particles or slurry in a medium is utilized to have high specific gravity, and the sealing component rotates to form centrifugal force so that the solid particles or slurry flows out of the sealing component along the conical cavity, so that the accumulation of the solid particles or slurry at the sealing component is reduced, and the sealing component is protected from being damaged by solids; and an adjusting screw is arranged at the inlet cover to adjust the relative position of the impeller and the inlet cover, so that the upper and lower uniformity of the gap between the impeller and the inlet cover is ensured. Thereby prolonging the service life of the pump, improving the efficiency and ensuring the stable and reliable operation of the pump.
The utility model adopts the following technical means:
a large chemical axial flow pump suitable for transporting particles or slurry comprising: the device comprises an inlet cover, an impeller nut, an impeller, a pump body, a shaft, a sealing part and a bearing part;
further, the impeller is fixedly arranged at the front end of the shaft, the front part of the impeller is fixed through an impeller nut, and the rear part of the impeller is positioned with the shaft through the shaft sleeve;
further, the shaft is supported by the bearing member and fixedly attached to the rear portion of the pump body;
further, a sealing component is arranged between the shaft and the pump body;
further, an inlet cover is arranged at the front part of the pump body.
Further, a flow stabilizing plate is arranged at the front side of the impeller;
further, a stabilizer plate is machined on the inlet cover.
Further, a front impeller head is arranged at the front side of the impeller;
further, the front impeller head is fixedly arranged on the front end face of the impeller through screws, so that a medium uniformly enters the impeller without impact through the guide of the flow stabilizing plate and the front impeller head.
Further, a rear impeller head and guide vanes are arranged on the rear side of the impeller;
further, the guide vane is arranged on the pump body;
further, the rear impeller head is positioned at the rear part of the impeller and fixedly connected with the guide vane, so that the medium flows out of the impeller, and the kinetic energy of the rotational motion of the impeller brought to the medium is converted into pressure energy through the guide of the rear impeller head and the guide vane, and the medium is guided to uniformly flow out of the impeller and the pump body, so that the efficiency and the stability of the pump are improved.
Further, the outside of the shaft is provided with a sheath welded on the guide vane, so that the shaft is protected from being impacted by a medium, and the stable operation of the pump is ensured.
Further, the impeller is positioned in the interior of the flow formed by the inlet cover with the flow stabilizing plate and the pump body with the rear impeller head, the guide vane and the sheath.
Furthermore, the conical cavity is arranged at the mounting position of the sealing component at the rear part of the pump body, solid particles or slurry in a medium is utilized to have high specific gravity, the sealing component rotates to form centrifugal force so that the solid particles or slurry flows out of the sealing component along the conical cavity, the accumulation of the solid particles or slurry at the sealing component is reduced, and the sealing component is protected from being damaged by the solid particles or slurry.
Further, an inlet cover adjusting screw is arranged at the assembling port of the inlet cover and the pump body;
further, the relative position of the inlet cover and the impeller is adjusted through the inlet cover adjusting screw, the gap between the impeller and the inlet cover is guaranteed to be uniform in size, the large volume loss caused by the gap at the upper part is avoided, the friction between the inlet cover and the impeller due to the small gap at the lower part is avoided, and the efficiency of the pump is improved.
Compared with the prior art, the utility model has the following advantages:
1. the large-scale chemical axial flow pump suitable for conveying particles or slurry provided by the utility model utilizes the drainage effect of the front impeller head, the flow stabilizing plate, the rear impeller head and the guide vane to guide the medium to uniformly flow into the impeller, flow out of the impeller and the pump body, so that the flow of bulk and blocky mediums is prevented from being uneven, the impeller is impacted and blocked, and the efficiency and the operation stability of the pump are seriously influenced;
2. the large-scale chemical axial flow pump suitable for conveying particles or slurry is provided with the sheath welded on the pump body at the outer circle of the shaft, so that the shaft is protected from the impact of a medium, and the stable operation of the pump is ensured;
3. the large-scale chemical axial flow pump suitable for conveying particles or slurry is provided with the conical cavity at the sealing part of the pump body, and solid particles or slurry in a medium are utilized to have high specific gravity, and the sealing part rotates to form centrifugal force so that the solid particles or slurry flows out of the sealing part along the conical cavity, so that the accumulation of the solid particles or slurry at the sealing part is reduced, and the sealing part is protected from being damaged by solids;
4. according to the large-scale chemical axial flow pump suitable for conveying particles or slurry, the adjusting screw is arranged at the inlet cover, the relative positions of the impeller and the inlet cover are adjusted, the gap between the impeller and the inlet cover is ensured to be uniform up and down, the volume loss caused by large upper gap is avoided, the friction between the inlet cover and the impeller caused by small lower gap is avoided, and the efficiency of the pump is improved;
in conclusion, the technical scheme of the utility model solves the problems of easy blockage, low working efficiency and unstable operation of the pump caused by uneven slurry flow due to the fact that the medium contains a large amount of particles or slurry in the prior art; the uneven slurry impacts the pump shaft, causing the pump to vibrate; the solids are accumulated on the sealing component, and the sealing component is easy to damage; the gap between the impeller and the inlet cover which are suspended at the shaft end is not uniform up and down, so that the efficiency is low, and the impeller and the inlet cover are easy to rub.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of an inlet cover of the present utility model;
FIG. 3 is a schematic view of a pump body according to the present utility model.
In the figure: 1. the device comprises an inlet cover 2, a flow stabilizing plate 3, a front impeller head 4, an impeller nut 5, an impeller 6, a gap 7, an inlet cover adjusting screw 8, a rear impeller head 9, guide vanes 10, a sheath 11, a pump body 12, a shaft sleeve 13, a shaft 14, a conical cavity 15, a sealing part 16 and a bearing part.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.
As shown in fig. 1, the present utility model provides a large-scale chemical axial flow pump suitable for transporting particles or slurry, comprising: the device comprises an inlet cover 1, a flow stabilizing plate 2, a front impeller head 3, an impeller nut 4, an impeller 5, a gap 6, an inlet cover adjusting screw 7, a rear impeller head 8, guide vanes 9, a sheath 10, a pump body 11, a shaft sleeve 12, a shaft 13, a conical cavity 14, a sealing part 15 and a bearing part 16; the impeller 5 is fixed at the front end of the shaft 13, the rear part is positioned with the shaft 13 through the shaft sleeve 12, and the front part is fixed through the impeller nut 4; the impeller 5 is positioned in a flow passage formed by the inlet cover 1 with the flow stabilizing plate 2 and the pump body 11 with the rear impeller head 8, the guide vane 9 and the sheath 10; the shaft 13 is supported and fixed at the rear part of the pump body 11 through a bearing part 16, and a sealing part 15 is arranged between the shaft 13 and the pump body 11;
as shown in fig. 2, the inlet cover is provided with 4 uniformly distributed flow stabilizing plates 2 and 4 uniformly distributed adjusting screws 7;
as shown in fig. 3, the pump body is welded with a rear impeller head 8, guide vanes 9, a sheath 10 and a conical cavity 14;
as shown in fig. 1, the front side of the impeller 5 is provided with the flow stabilizing plate 2 and the front impeller head 3, so that a medium uniformly and impact-free enters the impeller 5 through the guiding of the flow stabilizing plate 2 and the front impeller head 3, and the rear impeller head 8 and the guide vane 9 are arranged behind the impeller 5, so that the medium flows out of the impeller 5 and then is guided by the rear impeller head 8 and the guide vane 9, the kinetic energy of the rotational motion of the impeller 5 brought to the medium is converted into pressure energy, and the medium is guided to uniformly flow out of the impeller 5 and the pump body 11, so that the efficiency and the stability of the pump are improved.
As shown in fig. 1, a sheath 10 welded to the pump body 11 is provided outside the shaft 13 to protect the shaft 13 from the impact of medium, thereby ensuring the stable operation of the pump.
As shown in fig. 1, a conical cavity 14 is arranged at a sealing part 15 of a pump body 11, and by utilizing the fact that the specific gravity of solid particles or slurry in a medium is high, centrifugal force is formed by sealing rotation to enable the solid particles or slurry to flow out of the sealing part 15 along the conical cavity 14, so that accumulation of the solid particles or slurry at the sealing part 15 is reduced, and the sealing part 15 is protected from being damaged by the solid particles or slurry.
As shown in fig. 1, an inlet cover adjusting screw 7 is arranged at the inlet cover 1 to adjust the relative positions of the impeller 5 and the inlet cover 1, so that the gap 6 between the impeller 5 and the inlet cover 1 is ensured to be uniform up and down, the volume loss caused by large upper gap is avoided, the friction between the inlet cover 1 and the impeller 5 caused by small lower gap is avoided, and the pump efficiency is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (8)
1. A large-scale chemical axial flow pump suitable for transporting particles or slurry, which is characterized in that:
the large-scale chemical axial flow pump suitable for conveying particles or slurry comprises: an inlet cover (1), an impeller nut (4), an impeller (5), a pump body (11), a shaft (13), a sealing part (15) and a bearing part (16);
the impeller (5) is fixedly arranged at the front end of the shaft (13), the front part of the impeller (5) is fixed through an impeller nut (4), and the rear part of the impeller is positioned with the shaft (13) through a shaft sleeve (12);
the shaft (13) is supported and fixedly arranged at the rear part of the pump body (11) through a bearing component (16);
a sealing component (15) is arranged between the shaft (13) and the pump body (11);
the front part of the pump body (11) is provided with an inlet cover (1).
2. The large chemical axial flow pump suitable for transporting particles or slurry according to claim 1, wherein:
the front side of the impeller (5) is provided with a flow stabilizing plate (2);
the flow stabilizing plate (2) is processed on the inlet cover (1).
3. The large chemical axial flow pump adapted to deliver particles or slurry of claim 2, wherein:
the front side of the impeller (5) is also provided with a front impeller seal head (3);
the front impeller head (3) is fixedly arranged on the front end face of the impeller (5) through screws.
4. A large scale chemical axial flow pump adapted to deliver particles or slurry according to claim 3, wherein:
the rear side of the impeller (5) is provided with a rear impeller seal head (8) and guide vanes (9);
the guide vane (9) is arranged on the pump body (11);
the rear impeller head (8) is positioned at the rear part of the impeller (5) and is fixedly connected with the guide vane (9).
5. The large chemical axial flow pump suitable for transporting particles or slurry according to claim 1, wherein:
the outside of the shaft (13) is provided with a sheath (10) welded on the guide vane (9).
6. The large scale chemical axial flow pump adapted to deliver particles or slurry of claim 4, wherein:
the impeller (5) is positioned in the interior of the pump body (11) formed by the inlet cover (1) with the flow stabilizing plate (2), the end socket (8) with the rear impeller, the guide vane (9) and the sheath (10).
7. The large scale chemical axial flow pump adapted to deliver particles or slurry of claim 6, wherein:
a conical cavity (14) is arranged at the installation position of the rear sealing part (15) of the pump body (11).
8. The large scale chemical axial flow pump adapted to deliver particles or slurry of claim 6, wherein:
an inlet cover adjusting screw (7) is arranged at the assembling port of the inlet cover (1) and the pump body (11);
the relative positions of the inlet cover (1) and the impeller (5) are adjusted through the inlet cover adjusting screw (7), so that the gap (6) between the impeller (5) and the inlet cover (1) is uniform in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223186490.8U CN219035019U (en) | 2022-11-29 | 2022-11-29 | Large chemical axial flow pump suitable for conveying particles or slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223186490.8U CN219035019U (en) | 2022-11-29 | 2022-11-29 | Large chemical axial flow pump suitable for conveying particles or slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219035019U true CN219035019U (en) | 2023-05-16 |
Family
ID=86278635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223186490.8U Active CN219035019U (en) | 2022-11-29 | 2022-11-29 | Large chemical axial flow pump suitable for conveying particles or slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219035019U (en) |
-
2022
- 2022-11-29 CN CN202223186490.8U patent/CN219035019U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219035019U (en) | Large chemical axial flow pump suitable for conveying particles or slurry | |
| CN211488197U (en) | Fog gun machine | |
| CN100365288C (en) | Back vane structure for centrifugal pump | |
| CN208996950U (en) | A kind of Wear-resisting water ring vacuum pumps | |
| CN210461007U (en) | Pneumatic diaphragm pump with damping device | |
| CN203023116U (en) | Vertical type single-stage and single-suction chemical centrifugal pump | |
| CN208364403U (en) | A kind of low-capacity pump structure | |
| CN207568871U (en) | A kind of fuel oil centrifugal pump structure with degassing function | |
| CN210164650U (en) | Wear-resisting type chemical process pump | |
| CN111536050A (en) | Centrifugal pump with adjustable clearance between impeller and pump shell | |
| CN2406205Y (en) | Water-wheel type spray cooling-device | |
| CN218687694U (en) | Atomizing dust-settling device | |
| CN204877967U (en) | Forced circulation pump | |
| CN212376891U (en) | Centrifugal pump with adjustable clearance between impeller and pump shell | |
| CN215861009U (en) | Centrifugal pump convenient to installation | |
| CN219197677U (en) | Industrial spraying fan convenient to adjust | |
| CN202971203U (en) | Single-stage horizontal chemical centrifugal pump | |
| CN106426584A (en) | Silicon wafer line cutter winding displacement mechanism | |
| CN212717189U (en) | Large-traffic axial-flow pump | |
| CN216142911U (en) | Magnetic suspension water pump | |
| CN218644467U (en) | Large-scale vacuum pump impeller levelling horizontal structure | |
| CN216644643U (en) | Refrigeration structure for snow making equipment | |
| CN113135583B (en) | Method and device for preparing nano aluminum oxide by using nano porous membrane | |
| CN209856244U (en) | Water circulation cooling device convenient to install for vertical shaft type crusher bearing | |
| CN109162922A (en) | A kind of vacuum pump convenient for construction and installation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |