CN219587783U - Vortex type vertical axial flow pump - Google Patents

Abstract

The utility model adopts a vortex type vertical axial flow pump, which comprises a pump body and a volute, wherein a turbine is arranged in the volute, and can convert fluid in the volute into fluid with the same direction as that of fluid nearby an impeller; on one hand, the position of the second water port is convenient to adjust, so that the second water port is positioned on the side wall of the axial flow pump, and the height of the axial flow pump is reduced; on the other hand, the turbine and the volute can adjust the flowing direction of the fluid, so that the kinetic energy loss of the fluid is reduced, and the impact of the fluid on the pipeline of the axial flow pump is reduced.

Description

Vortex type vertical axial flow pump

Technical Field

The utility model relates to the technical field of axial flow pump structures, in particular to an eddy type vertical axial flow pump.

Background

The vertical axial flow pump is widely applied to the industries of chemical engineering, drainage and irrigation, environmental protection, civil engineering, electric power and the like. For example, in the field of saline-alkali chemical industry, a vertical axial flow pump is a key device for slurry circulation of a crystallizer of a combined alkali process, and is widely applied to salting-out, cold-out and carbonization tower flushing procedures of the combined alkali process.

The vertical axial flow pump is used for conveying a cleaning medium or a solid-liquid mixed medium containing crystal particles. Because the vertical axial flow pump has special conveying medium, severe working environment and complex operation working condition, the abrasion of the overcurrent components is serious, the service life of the impeller is short, the operation efficiency is low, the component replacement is frequent, the operation and maintenance difficulty is high, the operation cost is high, and the great waste of equipment and energy sources is caused. Most of the current vertical axial flow pumps are in a lower inlet side outlet or a side inlet side outlet, but the height of the whole pump body structure is increased.

There is therefore a need for an eddy current vertical axial flow pump that overcomes the above problems.

Disclosure of Invention

In order to overcome the problems, the utility model provides the vortex type vertical axial flow pump, after the direction of fluid is changed through the volute, the second water port can be also arranged on the side wall of the axial flow pump, so that side inlet and side outlet or flat inlet and flat outlet are realized, and the height of the axial flow pump is reduced.

The utility model provides a vortex type vertical axial flow pump, comprising:

the pump comprises a pump body, wherein an impeller is arranged in an inner cavity of the pump body and used for driving fluid in the pump body to flow, and a first water port communicated with the inner cavity is formed in one end of the pump body;

the volute is communicated with the inner cavity of the pump body and is vertical to the inner cavity of the pump body; the volute is communicated with one end of the pump body, which is away from the first water port, and one end of the volute, which is away from the pump body, is provided with a second water port;

the tail end of the volute chamber in a first direction is provided with a turbine, and the first direction is the direction in which fluid in the volute chamber flows from the second water port to the first water port; the turbine is used for converting the flow direction of the fluid in the volute into the same direction as the flow direction of the fluid driven by the impeller.

In some embodiments of the present utility model, the impeller is provided with a first blade or a second blade, and when the impeller is provided with the first blade, fluid in the axial flow pump flows along a first direction; when the impeller is provided with second blades, the fluid in the axial flow pump is along a second direction, which is opposite to the first direction.

In some embodiments of the utility model, the first blade and the second blade are mounted at opposite angles.

In some embodiments of the present utility model, a first flow channel is formed in an inner cavity of the pump body, the impeller is disposed in the first flow channel, and a buffer section is disposed between the first water through hole and the first flow channel, and the buffer section is in an arc structure.

In some embodiments of the present utility model, an angle between an opening direction of the first water through hole and a length direction of the first flow channel is not greater than 90 °.

In some embodiments of the present utility model, a motor is disposed outside the pump body, and a rotating shaft is disposed on the motor, and the rotating shaft penetrates through a wall of the inner cavity and extends into the inner cavity to be used for connection with the impeller, so as to drive the impeller to rotate.

In some embodiments of the utility model, a sealing structure is provided between the shaft and a wall of the inner cavity.

In some embodiments of the present utility model, the rotating shaft has a first portion exposed outside the inner cavity, and a bearing seat is sleeved on the first portion, and the bearing seat is fixed on the pump body.

The beneficial effects of the utility model are as follows: the utility model adopts a vortex type vertical axial flow pump, which comprises a pump body and a volute, wherein a turbine is arranged in the volute, and can convert fluid in the volute into fluid with the same direction as that of fluid nearby an impeller; on one hand, the position of the second water port is convenient to adjust, so that the second water port is positioned on the side wall of the axial flow pump, and the height of the axial flow pump is reduced; on the other hand, the turbine and the volute can adjust the flowing direction of the fluid, so that the kinetic energy loss of the fluid is reduced, and the impact of the fluid on the pipeline of the axial flow pump is reduced.

Drawings

FIG. 1 is a schematic structural diagram of an axial flow pump according to an embodiment of the present utility model;

FIG. 2 is a schematic structural diagram of an axial flow pump according to another embodiment of the present utility model;

FIG. 3 is a schematic view of an impeller according to an embodiment of the present utility model;

FIG. 4 is a schematic view of an impeller according to another embodiment of the present utility model;

FIG. 5 is a schematic view of a turbine according to an embodiment of the present utility model;

fig. 6 is a schematic view of a volute according to an embodiment of the utility model.

Specific element symbol description:

1-volute, 2-turbine, 3A-first impeller, 3B-second impeller, 4-rotating shaft, 5-pump body, 6-seal structure, 7-bearing frame.

Detailed Description

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 some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. The following detailed description of the embodiments of the utility model, provided in the accompanying drawings, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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 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 definition or explanation thereof is necessary in the following figures. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Furthermore, the terms "horizontal," "vertical," "overhang" and the like do not denote a requirement that the component be absolutely horizontal or overhang, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of an axial flow pump according to the present embodiment. The present embodiment provides a vortex type vertical axial flow pump, including: the pump comprises a pump body 5, wherein an impeller is arranged in an inner cavity of the pump body 5 and used for driving fluid in the pump body 5 to flow, and a first water port communicated with the inner cavity is formed in one end of the pump body 5; the volute 1 is communicated with the inner cavity of the pump body 5 and is vertical to the inner cavity of the pump body 5; the volute 1 is communicated with one end of the pump body 5, which is away from the first water port, and one end of the volute, which is away from the pump body 5, is provided with a second water port; the tail end of the volute 1 in a first direction is provided with a turbine 2, and the first direction is the direction in which fluid in the volute flows from a second water port to the first water port; the turbine 2 is used for converting the flow direction of the fluid in the volute 1 into the same direction as the flow direction of the fluid driven by the impeller.

The turbine 2 is arranged in the volute 1 in the embodiment, and the turbine 2 can convert the fluid in the volute 1 into the fluid in the same direction as the fluid near the impeller; on one hand, the position of the second water port is convenient to adjust, so that the second water port is positioned on the side wall of the axial flow pump, and the height of the axial flow pump is reduced; on the other hand, the turbine 2 and the volute 1 can adjust the flowing direction of the fluid, which is beneficial to reducing the kinetic energy loss of the fluid and reducing the impact of the fluid on the axial pump pipeline.

In some embodiments of the present utility model, referring to fig. 1 to 4, fig. 2 shows a schematic structural diagram of an axial flow pump according to the present embodiment; fig. 3 shows a schematic structural view of the impeller (corresponding to the first blade) provided in the present embodiment; fig. 4 shows a schematic structural view of the impeller (corresponding to the second blade) provided in the present embodiment. The impeller of the present embodiment is provided with a first blade or a second blade, and when the impeller is provided with the first blade, fluid in the axial flow pump flows along a first direction; when the impeller is provided with second blades, the fluid in the axial flow pump is along a second direction, which is opposite to the first direction.

In some embodiments of the present utility model, please continue to refer to fig. 3 and fig. 4, the mounting angles of the first blade and the second blade in this embodiment are opposite. In some embodiments, the mounting angles of the first blade and the second blade are perpendicular to each other.

In some embodiments of the present utility model, as shown in fig. 1, a first flow channel is formed in an inner cavity of the pump body 5, the impeller is disposed in the first flow channel, a buffer section is disposed between the first water through hole and the first flow channel, and the buffer section has an arc structure; the kinetic energy loss of the fluid is reduced.

In some embodiments of the present utility model, please continue to refer to fig. 1, an included angle between the opening direction of the first water port and the length direction of the first flow channel is not greater than 90 °.

In some embodiments of the present utility model, as shown in fig. 1, a motor is disposed outside the pump body 5, and a rotating shaft 4 is disposed on the motor, where the rotating shaft 4 passes through a wall of the inner cavity and extends into the inner cavity for connection with the impeller, so as to drive the impeller to rotate.

In some embodiments of the present utility model, referring to fig. 1, a sealing structure 6 is disposed between the shaft 4 and the wall of the inner cavity.

In some embodiments of the present utility model, with continued reference to fig. 1, the rotating shaft 4 has a first portion exposed outside the inner cavity, and a bearing seat 7 is sleeved on the first portion, where the bearing seat 7 is fixed on the pump body 5.

Referring to fig. 5 and 6, fig. 5 shows a schematic structural view of a turbine according to the present utility model; figure 6 shows a schematic view of the structure of the volute of the present utility model.

Specifically, the inner side of the flow channel of the volute 1 is connected with the outer side of the lower part of the flow channel of the turbine 2 through a welding process, the upper part of the flow channel of the turbine 2 is connected with the lower part of the flow channel of the pump body 5 through a middle nipple, and the pump body 5 is connected with the bearing seat 7 through a flange; the bearing seat 7 is assembled with the rotating shaft 4 in a matched manner through a bearing, a sealing component 6 is installed between the rotating shaft 4 and the pump body 5, the first blade 3A or the second blade 3B is installed at the tail end of the rotating shaft 4, the lower end face of the first blade 3A or the second blade 3B and the upper end face of the turbine 2 are ensured to be kept at a gap of 1-2 mm, and the two ends of the volute 1 and the pump body 5 are connected with an external system pipeline in a flange connection mode.

Compared with the existing vertical axial flow pump, the vertical axial flow pump structure has the following advantages: (1) The traditional feeding and discharging mode of the existing vertical axial flow pump is changed from 'lower feeding and measuring or side feeding and lower discharging' to 'flat feeding and measuring or side feeding and flat discharging', the height of a system device can be effectively shortened, the construction cost of an infrastructure is greatly reduced, and the running stability and reliability of the system are enhanced; (2) The turbine 2 and the volute 1 of the energy conversion component which are matched with the vertical axial flow pump are newly added at the lower end of the vertical axial flow pump, so that the energy of the flow channel conveying medium can be effectively fully utilized, the running efficiency of a unit is improved, the vibration of the unit caused by severe fluctuation of the medium running is reduced, the running life of the product is prolonged, and the maintenance period of a user is shortened.

In the rotation direction of the vertical axial flow pump, the rotating shaft 4 (the first blade 3A or the second blade 3B) rotates clockwise when seen from the power end face downwards; when the first blade 3A is installed in the vertical axial flow pump to run, after the circumferential and axial diversion effects of the volute 1 and the turbine 2, the medium is fully converted into kinetic energy along the circumferential and axial directions of the impeller in the inlet area of the first blade 3A, the medium enters the impeller in an optimal flow field distribution, the impact loss generated by the interaction of the medium and the impeller is reduced, the abrasion of the impeller caused by cavitation areas on the surface of the blade and the medium is reduced, and the service life of the equipment is prolonged.

When the second blade 3B is installed in the vertical axial flow pump to run, media flow in through the pump body, the media move downwards under the axial thrust action of the second blade 3B, partial kinetic energy of the media in the outlet area of the second blade 3B along the circumferential direction is converted into pressure energy under the action of the turbine 2, the kinetic energy of the media is further converted into pressure energy under the flow guiding action of the volute 1, the running efficiency of the pump is effectively improved, the impact of equipment on a system pipeline is reduced, and the running vibration of the equipment is reduced.

While the basic concepts have been described above, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements and adaptations of the utility model may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within the present disclosure, and therefore, such modifications, improvements, and adaptations are intended to be within the spirit and scope of the exemplary embodiments of the present disclosure.

Meanwhile, the present utility model uses specific words to describe embodiments of the present utility model. Reference to "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the utility model. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the utility model may be combined as suitable.

Similarly, it should be noted that in order to simplify the description of the present disclosure and thereby aid in understanding one or more inventive embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof. This method of disclosure, however, is not intended to imply that more features than are required by the subject utility model. Indeed, less than all of the features of a single embodiment disclosed above.

In some embodiments, numbers describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for a 20% variation. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations in some embodiments for use in determining the breadth of the range, in particular embodiments, the numerical values set forth herein are as precisely as possible.

Each patent, patent application publication, and other material, such as articles, books, specifications, publications, documents, etc., cited herein is hereby incorporated by reference in its entirety except for any application history file that is inconsistent or otherwise conflict with the present disclosure, which places the broadest scope of the claims in this application (whether presently or after it is attached to this application). It is noted that the description, definition, and/or use of the term in the appended claims controls the description, definition, and/or use of the term in this utility model if the description, definition, and/or use of the term in the appended claims does not conform to or conflict with the present disclosure.

The foregoing has outlined the detailed description of the embodiments of the present utility model, and the detailed description of the principles and embodiments of the present utility model is provided herein by way of example only to facilitate the understanding of the method and core concepts of the present utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims (8)

1. An eddy current type vertical axial flow pump, comprising:

the pump comprises a pump body, wherein an impeller is arranged in an inner cavity of the pump body and used for driving fluid in the pump body to flow, and a first water port communicated with the inner cavity is formed in one end of the pump body;

the volute is communicated with the inner cavity of the pump body and is vertical to the inner cavity of the pump body; the volute is communicated with one end of the pump body, which is away from the first water port, and one end of the volute, which is away from the pump body, is provided with a second water port;

the tail end of the volute chamber in a first direction is provided with a turbine, and the first direction is the direction in which fluid in the volute chamber flows from the second water port to the first water port; the turbine is used for converting the flow direction of the fluid in the volute into the same direction as the flow direction of the fluid driven by the impeller.

2. The vortex vertical axial flow pump according to claim 1, wherein the impeller is provided with a first blade or a second blade, and when the impeller is provided with the first blade, the fluid in the axial flow pump flows along a first direction; when the impeller is provided with second blades, the fluid in the axial flow pump is along a second direction, which is opposite to the first direction.

3. The vortex vertical axial flow pump according to claim 2 wherein the first and second blades are mounted at opposite angles.

4. The vortex type vertical axial flow pump according to claim 1, wherein a first flow channel is formed in an inner cavity of the pump body, the impeller is arranged in the first flow channel, a buffer section is arranged between the first water through hole and the first flow channel, and the buffer section is of an arc-shaped structure.

5. The vortex type vertical axial flow pump according to claim 4, wherein an included angle between the opening direction of the first water through-hole and the length direction of the first flow channel is not more than 90 °.

6. The vortex type vertical axial flow pump according to claim 1, wherein a motor is arranged outside the pump body, a rotating shaft is arranged on the motor, and the rotating shaft penetrates through the cavity wall of the inner cavity and extends into the inner cavity to be used for being connected with the impeller so as to drive the impeller to rotate.

7. The vortex vertical axial flow pump according to claim 6 wherein a sealing structure is provided between the shaft and the wall of the inner cavity.

8. The axial flow pump of claim 6, wherein the shaft has a first portion exposed outside the cavity, and a bearing block is sleeved on the first portion, and the bearing block is fixed on the pump body.