Axial flow pump with blade angle convenient to adjust

Abstract

The utility model discloses an axial flow pump facilitating blade angle adjustment, which comprises a pump shell, a fixed guide blade mounted in the pump shell, a rotating shaft, a driving motor used for driving the rotating shaft and an impeller mounted at the rotating shaft, the impeller comprises an impeller body and three blade mounting units, and the impeller body is provided with three mounting positions; the mounting position comprises a groove part, a through hole part communicated with the groove part, a plurality of limiting blind holes and a plurality of positioning holes, and the positioning holes are distributed in an arc shape at equal intervals. According to the axial flow pump, the blades and the impeller body are installed in a modularized and combined mode, when the blades are damaged, only the damaged blade modules need to be detached, and then new blade modules are installed for replacement, so that replacement and maintenance are convenient, the maintenance time is greatly shortened, and the maintenance cost is greatly reduced. And each mounting position is provided with a plurality of positioning holes matched with the positioning columns, so that the angle of the blade is convenient to adjust during mounting according to different use occasions, and the mounting is more flexible.

Description

Technical Field

[0001] The utility model relates to the field of axial flow pumps, and more specifically to an axial flow pump with convenient blade angle adjustment. Background Art

[0002] Axial flow pumps are closely related to people's lives and industrial production. In agriculture, axial flow pumps play an important role in water use in irrigation and drainage, animal husbandry, etc., and can more conveniently pump water to the destination. In the process of urbanization and industrialization, axial flow pumps are key equipment for solving urban drainage and sewage treatment problems, and the market demand continues to rise. At the same time, axial flow pumps are also widely used in environmental protection, chemical industry, papermaking and other fields.

[0003] Some existing axial flow pumps have fixed blades and impellers cast as one piece, which results in the pumping flow and head being fixed during the design and cannot be flexibly adjusted according to actual needs. This fixity limits the application scope of the axial flow pump. In actual applications, different working environments and working conditions may require different flow rates and heads. If the blade installation angle of the axial flow pump is fixed, it may not meet the needs under all working conditions. In addition, when a blade fails, it is usually necessary to disassemble the entire impeller for repair. This disassembly process not only requires professional tools and equipment, but also is complicated and time-consuming, increasing the difficulty and cost of maintenance. During the disassembly process, if you are not careful and operate improperly, it may cause damage to other components. In addition, if the blades cannot be repaired or replaced in time after disassembly, it will affect the normal operation of the axial flow pump. Utility Model Content

[0004] The utility model aims to overcome the defects of the prior art and provide an axial flow pump which is convenient for adjusting the blade angle.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an axial flow pump, comprising a pump casing, a fixed guide vane installed in the pump casing, a rotating shaft, a driving motor for driving the rotating shaft and an impeller installed at the rotating shaft, the impeller comprising an impeller body and three blade installation units, the impeller body having three installation positions, the installation position comprising a groove portion, a through hole portion communicating with the groove portion, a plurality of limiting blind holes and a plurality of positioning holes, the plurality of positioning holes being distributed in an arc shape with equal intervals, the blade installation unit comprising a blade fixing seat, a socket connected to the blade fixing seat and capable of being inserted into the through hole portion, an insert block fixedly connected to the socket and inserted into the through hole portion, a base plate connected to the insert block and a plurality of side convex plates connected to the base plate, the blade fixing seat having a blade, the blade fixing seat having a positioning column matching the positioning hole, the side convex plate having a limiting rod matching the limiting blind hole, the socket having a first stud and a plurality of second studs, the base plate having a through hole matching the first stud and an arc-shaped through groove matching the second stud, the through hole and the arc-shaped through groove both passing through the insert block.

[0006] Furthermore, the impeller also includes a mounting ring located in the impeller body and fixedly connected to the impeller body, the mounting ring has a keyway, and the rotating shaft has a key that cooperates with the keyway; a water guide cone is fixed to the end of the rotating shaft, and a fixing ring is also fixed to the rotating shaft, the impeller is installed between the water guide cone and the fixing ring, and the water guide cone and the fixing ring are fixedly connected to the rotating shaft by bolts.

[0007] Thus, the fixing ring and the keyway are used to facilitate the connection between the impeller and the rotating shaft, and the water guide cone is convenient for guiding the fluid to flow smoothly into the impeller.

[0008] Furthermore, the rotating shaft has a plurality of first threaded holes and a plurality of second threaded holes, the water guide cone has an end slot into which the end of the rotating shaft is inserted and a plurality of first bolt grooves, and the first bolt groove has a first bolt that cooperates with the first threaded hole.

[0009] Thereby, the installation and fixation of the water guide cone is facilitated.

[0010] Furthermore, the fixing ring is connected to an insert ring which can be inserted into the impeller body, the fixing ring is provided with a second bolt groove, and the second bolt groove is provided with a second bolt which cooperates with the second threaded hole.

[0011] Thereby, the installation and fixation of the fixing ring are facilitated.

[0012] Furthermore, the inner side of the fixing ring has a strip groove penetrating the fixing ring and the insert ring, and the strip groove can allow the key to pass through.

[0013] This makes it convenient to insert the fixing ring from the bottom end of the rotating shaft, thereby facilitating the installation of the fixing ring.

[0014] Furthermore, the first stud passes through the through hole and is fixed by a first nut, and the second stud passes through the arc-shaped through groove and is fixed by a second nut.

[0015] Thereby, the blade fixing seat and the plug block are firmly connected.

[0016] The present application also provides an impeller, comprising an impeller body and three blade installation units, the impeller body having three installation positions, the installation positions comprising a groove portion, a through hole portion connected to the groove portion, a plurality of limiting blind holes and a plurality of positioning holes, the plurality of positioning holes being distributed in an arc shape with equal intervals, the blade installation unit comprising a blade fixing seat, a socket connected to the blade fixing seat and capable of being inserted into the through hole portion, an insert block fixedly connected to the socket and inserted into the through hole portion, a base plate connected to the insert block and a plurality of side convex plates connected to the base plate, the blade fixing seat having a blade, the blade fixing seat having a positioning column matching the positioning hole, the side convex plate having a limiting rod matching the limiting blind hole, the socket having a first stud and a plurality of second studs, the base plate having a through hole matching the first stud and an arc-shaped through groove matching the second stud, the through hole and the arc-shaped through groove both passing through the insert block.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1. The axial flow pump of the present application realizes modular assembly installation between the blades and the impeller body. When the blades are damaged, it is only necessary to remove the damaged blade module and then install a new blade module to replace it, thereby facilitating replacement and maintenance and greatly reducing maintenance time and cost.

[0019] 2. The axial flow pump of the present application has a plurality of positioning holes, which cooperate with positioning columns, so that the angle of the blades can be easily adjusted during installation according to different usage scenarios, and the installation is more flexible.

[0020] 3. In the axial flow pump of the present application, the fixing ring and the water guide cone jointly provide stable support for the impeller, so that the impeller can be stably installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of an axial flow pump;

[0022] Figure 2 It is a schematic diagram of the separation of axial flow pump components;

[0023] Figure 3 is a schematic diagram of the impeller;

[0024] Figure 4 It is a schematic diagram of the separation of impeller components;

[0025] Figure 5 for Figure 4 Schematic diagram from another perspective;

[0026] For the convenience of schematic diagram, the pump casing, fixed guide vanes and drive motor are not drawn in the figure.

[0027] Explanation of the reference numerals: 1 shaft; 1.1 key; 1.2 first threaded hole; 1.3 second threaded hole; 2 impeller body; 2.1 groove portion; 2.2 through hole portion; 2.3 limiting blind hole; 2.4 positioning hole; 3 blade fixing seat; 3.1 socket; 3.2 blade; 3.3 positioning column; 3.4 first stud; 3.5 second stud; 4 plug-in block; 4.1 base plate; 4.2 side convex plate; 4.3 limiting rod; 4.4 through hole; 4.5 arc-shaped through groove; 5 mounting ring; 5.1 keyway; 6 water guide cone; 6.1 end slot; 6.2 first bolt groove; 6.3 first bolt; 7 fixing ring; 7.1 plug-in ring; 7.2 second bolt groove; 7.3 second bolt; 7.4 strip groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The utility model provides Figure 1-5 An axial flow pump for conveniently adjusting blade angles shown in the figure comprises a pump casing, a fixed guide vane installed in the pump casing, a rotating shaft 1, a driving motor for driving the rotating shaft, and an impeller installed at the rotating shaft 1, wherein the impeller comprises an impeller body 2 and three blade installation units, wherein the impeller body 2 has three installation positions, wherein the installation positions comprise a groove portion 2.1, a through hole portion 2.2 connected to the groove portion 2.1, a plurality of position-limiting blind holes 2.3, and a plurality of positioning holes 2.4, wherein the plurality of positioning holes 2.4 are distributed in an arc shape with equal intervals, wherein the blade installation unit comprises a blade fixing seat 3, a socket 3.1 connected to the blade fixing seat 3 and capable of being inserted into the through hole portion 2.2, and a socket 3.1 connected to the socket 3.1 A plug-in block 4 fixedly connected and inserted into the through hole portion 2.2, a base plate 4.1 connected to the plug-in block 4, and a plurality of side convex plates 4.2 connected to the base plate 4.1, the blade fixing seat 3 has a blade 3.2, the blade fixing seat 3 has a positioning column 3.3 matching the positioning hole 2.4, the side convex plate 4.2 has a limiting rod 4.3 matching the limiting blind hole 2.3, the socket 3.1 has a first stud 3.4 and a plurality of second studs 3.5, the base plate 4.1 has a through hole 4.4 matching the first stud 3.4 and an arcuate through groove 4.5 matching the second stud 3.5, and the through hole and the arcuate through groove both pass through the plug-in block 4.

[0030] The impeller further comprises a mounting ring 5 located in the impeller body 2 and fixedly connected to the impeller body 2, the mounting ring 5 having a keyway 5.1, the rotating shaft 1 having a key 1.1 matched with the keyway 5.1; a water guide cone 6 is fixed to the end of the rotating shaft 1, a fixing ring 7 is also fixed to the rotating shaft 1, the impeller is mounted between the water guide cone 6 and the fixing ring 7, the water guide cone and the fixing ring are fixedly connected to the rotating shaft 1 by bolts; the rotating shaft 1 has a plurality of first threaded holes 1.2 and a plurality of second threaded holes 1.3, the The water guide cone has an end slot 6.1 into which the end of the rotating shaft 1 is inserted and a plurality of first bolt grooves 6.2, wherein the first bolt groove has a first bolt 6.3 that cooperates with the first threaded hole; the fixing ring 7 is connected to an insert ring 7.1 that can be inserted into the impeller body 2, and the fixing ring has a second bolt groove 7.2, and the second bolt groove has a second bolt 7.3 that cooperates with the second threaded hole; the inner side of the fixing ring 7 has a strip groove 7.4 that passes through the fixing ring and the insert ring, and the strip groove 7.4 allows the key 1.1 to pass through.

[0031] Working principle: The impeller of the present application realizes modular assembly installation between the blades and the impeller body. When the blade is damaged, only the damaged blade module needs to be removed and then a new blade module is installed to replace it, which is convenient for replacement and maintenance, greatly reducing maintenance time and cost. Each installation position has multiple positioning holes, which cooperate with positioning columns, so that the angle of the blade can be adjusted during installation according to different usage occasions, and the installation is more flexible.

[0032] During specific installation, the water guide cone and the rotating shaft are fixed to the rotating shaft using a first bolt, the fixing ring and the rotating shaft are fixed using a second bolt, and the impeller can be clamped between the water guide cone and the fixing ring, thereby achieving installation of the impeller.

[0033] Although the present invention has been illustrated and described with respect to preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. An axial flow pump with convenient blade angle adjustment, characterized in that: The invention comprises a pump casing, a fixed guide vane installed in the pump casing, a rotating shaft, a driving motor for driving the rotating shaft and an impeller installed at the rotating shaft, wherein the impeller comprises an impeller body and three blade installation units, wherein the impeller body has three installation positions, wherein the installation positions comprise a groove portion, a through hole portion connected to the groove portion, a plurality of limiting blind holes and a plurality of positioning holes, wherein the plurality of positioning holes are distributed in an arc shape with equal intervals, wherein the blade installation unit comprises a blade fixing seat, a socket connected to the blade fixing seat and capable of being inserted into the through hole portion, an insert block fixedly connected to the socket and inserted into the through hole portion, a base plate connected to the insert block and a plurality of side convex plates connected to the base plate, wherein the blade fixing seat has a blade, the blade fixing seat has a positioning column matching the positioning hole, the side convex plate has a limiting rod matching the limiting blind hole, the socket has a first stud and a plurality of second studs, the base plate has a through hole matching the first stud and an arc-shaped through groove matching the second stud, and the through hole and the arc-shaped through groove both pass through the insert block.

2. The axial flow pump with convenient blade angle adjustment according to claim 1, characterized in that: The impeller also includes a mounting ring located in the impeller body and fixedly connected to the impeller body, the mounting ring has a keyway, and the rotating shaft has a key that cooperates with the keyway; a water guide cone is fixed to the end of the rotating shaft, and a fixing ring is also fixed to the rotating shaft, the impeller is installed between the water guide cone and the fixing ring, and the water guide cone and the fixing ring are fixedly connected to the rotating shaft by bolts.

3. The axial flow pump with convenient blade angle adjustment according to claim 2, characterized in that: The rotating shaft is provided with a plurality of first threaded holes and a plurality of second threaded holes, the water guide cone is provided with an end slot into which the end of the rotating shaft is inserted and a plurality of first bolt grooves, and the first bolt grooves are provided with first bolts matched with the first threaded holes.

4. The axial flow pump with convenient blade angle adjustment according to claim 3, characterized in that: The fixing ring is connected with an insert ring which can be inserted into the impeller body. The fixing ring is provided with a second bolt groove. The second bolt groove is provided with a second bolt which matches with the second threaded hole.

5. The axial flow pump with convenient blade angle adjustment according to claim 4, characterized in that: The inner side of the fixing ring is provided with a strip groove penetrating the fixing ring and the insert ring, and the strip groove can allow the key to pass through.

Images