阅读说明：本技术 一种高寿命轴流泵 (Long-life axial-flow pump ) 是由 吴凡 于 2019-12-27 设计创作，主要内容包括：本发明提供一种高寿命轴流泵,包括：管体、转轴组件、叶片组件；转轴组件的一端设置在直管的中轴线上,另一端贯穿弯管的侧壁突出管体外；叶片组件设置在转轴组件位于直管的一端；转轴组件包括：导叶、传动轴和保护轴；传动轴一端与叶片组件固定连接,另一端突出管体；保护轴套设在传动轴外侧,保护轴与传动轴之间存在间隙,保护轴与传动轴之间均匀设置有多个轴承；在保护轴突出管体外的一端侧面设置有进油口；导叶固定设置在保护轴靠近叶片组件的外周。本发明的高寿命轴流泵,采用保护轴套设在传动轴上,使传动轴与水分隔开,一方面防止水的反复冲刷,另一方面保护传动轴免受水的长时间侵蚀；从而提高了传动轴的使用寿命。(The invention provides a long-life axial-flow pump, comprising: the rotary shaft assembly comprises a pipe body, a rotary shaft assembly and a blade assembly; one end of the rotating shaft assembly is arranged on the central axis of the straight pipe, and the other end of the rotating shaft assembly penetrates through the side wall of the bent pipe and protrudes out of the pipe body; the blade assembly is arranged at one end of the rotating shaft assembly, which is positioned at the straight pipe; the pivot subassembly includes: guide vanes, a transmission shaft and a protection shaft; one end of the transmission shaft is fixedly connected with the blade assembly, and the other end of the transmission shaft protrudes out of the pipe body; the protective shaft is sleeved outside the transmission shaft, a gap exists between the protective shaft and the transmission shaft, and a plurality of bearings are uniformly arranged between the protective shaft and the transmission shaft; an oil inlet is formed in the side face of one end outside the protective axon outlet pipe body; the stator is fixed to be set up in the periphery that the blade subassembly is close to at the protection shaft. According to the long-life axial-flow pump, the protection shaft is sleeved on the transmission shaft, so that the transmission shaft is separated from water, on one hand, the repeated washing of water is prevented, and on the other hand, the transmission shaft is protected from long-time erosion of water; thereby improving the service life of the transmission shaft.)

1. A high life axial flow pump comprising: the device comprises a pipe body (1), a rotating shaft assembly (2) and a blade assembly (3); one end of the pipe body (1) is a bent pipe (1-1), and the other end of the pipe body is a straight pipe (1-2); one end of the rotating shaft assembly (2) is arranged on the central axis of the straight pipe (1-2), and the other end of the rotating shaft assembly penetrates through the side wall of the bent pipe (1-1) and protrudes out of the pipe body (1); the blade assembly (3) is arranged at one end, located on the straight pipe (1-2), of the rotating shaft assembly (2); characterized in that the spindle assembly (2) comprises: the guide vane (2-2), the transmission shaft (2-3) and the protection shaft (2-1); one end of the transmission shaft (2-3) is fixedly connected with the blade assembly (3), and the other end of the transmission shaft protrudes out of the pipe body (1); the protection shaft (2-1) is sleeved on the outer side of the transmission shaft (2-3), a gap exists between the protection shaft (2-1) and the transmission shaft (2-3), and a plurality of bearings (7) are uniformly arranged between the protection shaft (2-1) and the transmission shaft (2-3); one end of the protection shaft (2-1) is connected with the blade assembly (3) in a sealing way, and the other end of the protection shaft is fixedly connected with the bent pipe (1-1); one end of the protection shaft (2-1) protruding out of the pipe body (1) is hermetically connected with one end of the transmission shaft (2-3) protruding out of the pipe body (1); an oil inlet (6) is formed in the side face of one end, protruding out of the pipe body (1), of the protection shaft (2-1); the guide vane (2-2) is fixedly arranged on the periphery of the blade assembly (3) close to the protection shaft (2-1).

2. The long-life axial-flow pump according to claim 1, characterized in that a support component (5) is arranged at a middle position in the pipe body (1), and the support component (5) is sleeved on the periphery of the protection shaft (2-1).

3. High lifetime axial flow pump according to claim 2, wherein said support assembly (5) comprises: a support ring (5-2), a plurality of connecting pieces (5-3) and a plurality of limiting devices (5-1);

the supporting ring (5-2) is sleeved outside the protecting shaft (2-1), and the limiting device (5-1) is arranged on the inner periphery of the supporting ring (5-2) and is positioned between the protecting shaft (2-1) and the supporting ring (5-2); one end of the connecting piece (5-3) is fixed with the periphery of the support ring (5-2), and the other end is fixedly connected with the inner wall of the pipe body (1).

4. High lifetime axial pump according to claim 3, characterized in that the connection piece (5-3) is parallel to a tangent of the circumference of the support ring (5-2).

5. High lifetime axial pump according to claim 4, characterized in that a first filter mesh (8) is arranged between adjacent connectors (5-3).

6. High lifetime axial flow pump according to claim 4, wherein said limiting means (5-1) comprises:

the limiting plate (5-12) is arc-shaped, and one side surface of the limiting plate is matched with the peripheral shape of the protection shaft (2-1);

and one end of the spring (5-11) is fixedly connected with the inner periphery of the support ring (5-2), and the other end of the spring is fixedly connected with the limit plate (5-12).

7. High life axial flow pump according to claim 1, characterized in that the guide vanes (2-2) are made in one piece with the protection shaft (2-1).

8. High lifetime axial flow pump according to claim 1, characterized in that a second filter screen (4) is arranged at the end of the tube (1) near the blade assembly (3).

9. High life axial flow pump according to claim 1, characterized in that the vane assembly (3) comprises:

the middle part of the upper end face of the connecting body (3-1) is provided with a conveying shaft mounting hole (3-3), the inner wall of the conveying shaft mounting hole (3-3) is provided with threads, and the periphery of one end, connected with the blade assembly (3), of the transmission shaft (2-3) is provided with threads; the transmission shaft (2-3) is arranged in the transmission shaft mounting hole (3-3); the section of the lower end face of the connecting body (3-1) is arc-shaped;

one end of each blade (3-2) is fixedly connected with the connecting body (3-1); the other end is provided with a plurality of unequal sawtooth grooves; one end of the blade (3-2) and the connecting body (3-1) is smaller than one end of the blade (3-2) far away from the connecting body (3-1); the blades (3-2) are spiral.

10. The high-life axial flow pump according to claim 9, characterized in that the connecting body (3-1) is provided with a plurality of first annular grooves on its upper end surface, the protecting shaft is provided with a plurality of second annular grooves on its lower end surface, an annular sealing gasket (9) is provided between the connecting body (3-1) and the protecting shaft, the outer ring and the inner ring of the annular sealing gasket (9) are respectively T-shaped, and the annular sealing gasket (9) is provided with first protrusions adapted to the first annular grooves on its lower end surface; and a second bulge matched with the second annular groove is arranged on the upper end surface of the annular sealing gasket (9).

Technical Field

The invention relates to the technical field of axial flow pumps, in particular to an axial flow pump with a long service life.

Background

At present, the axial-flow pump is as the suction pump of low-lift high flow, and because the practical application, its transmission shaft is all longer, and the part that the transmission shaft worn to establish in the body does not have any supporting component, and the transmission shaft is in long-time high-speed operation, because the reaction force of rivers, makes the transmission shaft pass through high strength and erodees, appears damaging easily.

Disclosure of Invention

One of the purposes of the invention is to provide a long-life axial-flow pump, which adopts a protection shaft sleeved on a transmission shaft to protect the transmission shaft and separate the transmission shaft from water, thereby preventing the water from being repeatedly washed out and protecting the transmission shaft from being eroded by water for a long time; thereby improving the service life of the transmission shaft.

The embodiment of the invention provides a long-life axial-flow pump, which comprises: the rotary shaft assembly comprises a pipe body, a rotary shaft assembly and a blade assembly; one end of the pipe body is a bent pipe, and the other end of the pipe body is a straight pipe; one end of the rotating shaft assembly is arranged on the central axis of the straight pipe, and the other end of the rotating shaft assembly penetrates through the side wall of the bent pipe and protrudes out of the pipe body; the blade assembly is arranged at one end of the rotating shaft assembly, which is positioned at the straight pipe; the pivot subassembly includes: guide vanes, a transmission shaft and a protection shaft; one end of the transmission shaft is fixedly connected with the blade assembly, and the other end of the transmission shaft protrudes out of the pipe body; the protective shaft is sleeved outside the transmission shaft, a gap exists between the protective shaft and the transmission shaft, and a plurality of bearings are uniformly arranged between the protective shaft and the transmission shaft; one end of the protection shaft is hermetically connected with the blade assembly, and the other end of the protection shaft is fixedly connected with the bent pipe; one end of the protection shaft protruding out of the pipe body is hermetically connected with one end of the transmission shaft protruding out of the pipe body; an oil inlet is formed in the side face of one end outside the protective axon outlet pipe body; the stator is fixed to be set up in the periphery that the blade subassembly is close to at the protection shaft.

Preferably, a supporting component is arranged in the middle of the pipe body and sleeved on the periphery of the protection shaft.

Preferably, the support assembly comprises: the device comprises a support ring, a plurality of connecting pieces and a plurality of limiting devices;

the supporting ring is sleeved outside the protecting shaft, and the limiting device is arranged on the inner periphery of the supporting ring and is positioned between the protecting shaft and the supporting ring; one end of the connecting piece is fixed with the periphery of the support ring, and the other end of the connecting piece is fixedly connected with the inner wall of the pipe body.

Preferably, the connecting member is parallel to a tangent of the outer circumference of the support ring.

Preferably, a first filter screen is arranged between the adjacent connecting pieces.

Preferably, the limiting means comprises:

the limiting plate is arc-shaped, and one side surface of the limiting plate is matched with the peripheral shape of the protection shaft;

and one end of the spring is fixedly connected with the inner periphery of the support ring, and the other end of the spring is fixedly connected with the limiting plate.

Preferably, the guide vane is integrally formed with the protective shaft.

Preferably, a second filter screen is arranged at one end of the pipe body close to the blade assembly.

Preferably, the blade assembly comprises:

the middle part of the upper end surface of the connecting body is provided with a transmission shaft mounting hole, the inner wall of the transmission shaft mounting hole is provided with threads, and the periphery of one end of the transmission shaft connected with the blade assembly is provided with threads; the transmission shaft is arranged in the transmission shaft mounting hole; the section of the lower end surface of the connecting body is arc-shaped;

one end of each blade is fixedly connected with the connecting body; the other end is provided with a plurality of unequal sawtooth grooves; one end of the blade and the connecting body is smaller than one end of the blade far away from the connecting body; the blades are helical.

Preferably, a plurality of first annular grooves are formed in the upper end face of the connecting body, a plurality of second annular grooves are formed in the lower end face of the protection shaft, an annular sealing gasket is arranged between the connecting body and the protection shaft, the outer ring and the inner ring of the annular sealing gasket are respectively in a T shape, and first bulges matched with the first annular grooves are formed in the lower end face of the annular sealing gasket; and a second bulge matched with the second annular groove is arranged on the upper end surface of the annular sealing gasket.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a long-life axial flow pump according to an embodiment of the present invention;

FIG. 2 is a schematic view of a support assembly for a long-life axial flow pump in an embodiment of the present invention;

FIG. 3 is a schematic diagram of a vane assembly of a long-life axial flow pump according to an embodiment of the present disclosure;

fig. 4 is a schematic connection diagram of a protection shaft and a connection member of a long-life axial flow pump according to an embodiment of the present invention.

In the figure:

1. a pipe body; 2. a rotating shaft assembly; 3. a blade assembly; 4. a second filter screen; 5. a support assembly; 6. an oil inlet; 7. a bearing; 8. a first filter screen; 9. an annular seal; 1-1, bending a pipe; 1-2, straight pipe; 2-1, protecting the shaft; 2-2, guide vanes; 2-3, a transmission shaft; 3-1, a linker; 3-2, blades; 3-3, a transmission shaft mounting hole; 5-1, a limiting device; 5-2, a support ring; 5-3, connecting pieces; 5-11, a spring; 5-12 and a limit plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

An embodiment of the present invention provides a long-life axial-flow pump, as shown in fig. 1, including: the device comprises a pipe body 1, a rotating shaft component 2 and a blade component 3; one end of the pipe body 1 is a bent pipe 1-1, and the other end is a straight pipe 1-2; one end of the rotating shaft component 2 is arranged on the central axis of the straight pipe 1-2, and the other end of the rotating shaft component penetrates through the side wall of the bent pipe 1-1 and protrudes out of the pipe body 1; the blade assembly 3 is arranged at one end of the rotating shaft assembly 2, which is positioned at the straight pipe 1-2; the spindle assembly 2 includes: guide vanes 2-2, a transmission shaft 2-3 and a protection shaft 2-1; one end of the transmission shaft 2-3 is fixedly connected with the blade assembly 3, and the other end of the transmission shaft protrudes out of the pipe body 1; the protection shaft 2-1 is sleeved on the outer side of the transmission shaft 2-3, a gap exists between the protection shaft 2-1 and the transmission shaft 2-3, a plurality of bearings 7 are uniformly arranged between the protection shaft 2-1 and the transmission shaft 2-3, and the protection shaft 2-1 is rotatably connected with the transmission shaft 2-3 through the plurality of bearings 7; one end of the protection shaft 2-1 is hermetically connected with the blade assembly 3, and the other end of the protection shaft is fixedly connected with the bent pipe 1-1; one end of the protection shaft 2-1 protruding out of the pipe body 1 is hermetically connected with one end of the transmission shaft 2-3 protruding out of the pipe body 1; an oil inlet 6 is arranged on the side surface of one end of the protection shaft 2-1, which protrudes out of the pipe body 1; the guide vane 2-2 is fixedly arranged on the periphery of the protective shaft 2-1 close to the vane assembly 3.

The working principle and the beneficial effects of the technical scheme are as follows:

meanwhile, the protective shaft 2-1 is fixedly connected with the pipe body 1, and a main supporting point is provided for the transmission shaft 2-3; the transmission shaft 2-3 is prevented from being broken due to the reaction force of the water body. The protection shaft 2-1 is sleeved on the transmission shaft 2-3 to separate the transmission shaft 2-3 from a water body, so that on one hand, repeated water flushing is prevented, and on the other hand, the transmission shaft 2-3 is protected from long-time erosion of water; thereby improving the service life of the transmission shaft 2-3.

A closed space is formed between the protective shaft 2-1 and the transmission shaft 2-3, and lubricating oil is filled in the closed space, so that the abrasion of a bearing 7 connected between the protective shaft 2-1 and the transmission shaft 2-3 is reduced, and the service life of the protective shaft is prolonged.

In one embodiment, as shown in fig. 1 and 2, a support member 5 is disposed at a middle position in the pipe body 1, and the support member 5 is sleeved on the outer periphery of the protection shaft 2-1.

The support assembly 5 includes: a support ring 5-2, a plurality of connecting pieces 5-3 and a plurality of limiting devices 5-1;

the support ring 5-2 is sleeved outside the protection shaft 2-1, and the limiting device 5-1 is arranged on the inner periphery of the support ring 5-2 and is positioned between the protection shaft 2-1 and the support ring 5-2; one end of the connecting piece 5-3 is fixed with the periphery of the support ring 5-2, and the other end is fixedly connected with the inner wall of the pipe body 1.

The connecting piece 5-3 is parallel to the tangent of the periphery of the support ring 5-2.

A first filter screen 8 is arranged between the adjacent connecting pieces 5-3; the first filter screen 8 mainly prevents the collision between the impurities and the blade assembly 3 during the backflow.

Stop device 5-1 includes:

the limiting plate 5-12 is arc-shaped, and one side surface of the limiting plate is matched with the peripheral shape of the protection shaft 2-1;

and one end of the at least one spring 5-11 is fixedly connected with the inner periphery of the support ring 5-2, and the other end of the at least one spring is fixedly connected with the limiting plate 5-12.

The working principle and the beneficial effects of the technical scheme are as follows:

the supporting component 5 supports the position of the protective shaft 2-1 in the pipe body 1 and provides a supporting point for the protective shaft. The limiting device 5-1 is used for damping the tiny swing of the protection shaft 2-1, which is generated due to the reaction of the water body; specifically, the limiting plate 5-12 is in direct contact with the periphery of the protective shaft 2-1, micro-swing is converted into elastic deformation of the spring 5-11, and then the spring 5-11 releases the elastic deformation to counteract opposite acting force.

In one embodiment, the guide vane 2-2 is made in one piece with the protective shaft 2-1.

To prevent damage to the blade assembly 3 by an excessively large object being inhaled, as shown in fig. 1, in one embodiment, a second filter 4 is provided at an end of the pipe body 1 adjacent to the blade assembly 3.

The working principle and the beneficial effects of the technical scheme are as follows:

the water inlet end, i.e. the end of the pipe body 1 near the blade assembly 3. The first filter screen is arranged at the water inlet end so as to prevent the blade assembly 3 from being damaged due to the fact that an overlarge object is sucked in the use process of the axial flow pump; the service life of the axial flow pump is ensured.

In one embodiment, as shown in fig. 3, the blade assembly 3 comprises:

a transmission shaft mounting hole 3-3 is formed in the middle of the upper end face of the connecting body 3-1, threads are formed in the inner wall of the transmission shaft mounting hole 3-3, and threads are formed in the periphery of one end, connected with the blade assembly 3, of the transmission shaft 2-3; the transmission shaft 2-3 is arranged in the transmission shaft mounting hole 3-3; the section of the lower end surface of the connector 3-1 is arc-shaped;

one end of each blade 3-2 is fixedly connected with the connecting body 3-1; the other end is provided with a plurality of unequal sawtooth grooves; one end of the blade 3-2 and the connector 3-1 is smaller than one end of the blade 3-2 far away from the connector 3-1; the blades 3-2 are helical.

The working principle and the beneficial effects of the technical scheme are as follows:

the blades 3-2 are provided with sawtooth grooves, so that the pumping vortex after the axial flow pump is started is cut, the pumping vortex is changed into countless small vortices, and the impact force of a water body on the rotating shaft assembly is reduced. The blades 3-2 are designed into a spiral shape, so that better water pumping power is achieved. The lower end face of the connector 3-1 is arc-shaped, so that the water body is separated towards two sides, and the impact force of the water body on the rotating shaft assembly is further reduced.

In one embodiment, as shown in fig. 4, a plurality of first annular grooves are arranged on the upper end surface of the connecting body 3-1, a plurality of second annular grooves are arranged on the lower end surface of the protection shaft, an annular sealing gasket 9 is arranged between the connecting body 3-1 and the protection shaft, the outer ring and the inner ring of the annular sealing gasket 9 are respectively T-shaped, and a plurality of first protrusions adapted to the first annular grooves are arranged on the lower end surface of the annular sealing gasket 9; a plurality of second bulges matched with the second annular grooves are arranged on the upper end surface of the annular sealing gasket 9.

The working principle and the beneficial effects of the technical scheme are as follows:

when the annular sealing gasket 9 is used for sealing the protection shaft and the connecting body 3-1, the T-shaped parts of the inner ring and the outer ring are just attached to the surfaces of the protection shaft and the connecting body 3-1, and the bulges on the upper surface and the lower surface are arranged in the annular groove at the connecting part of the protection shaft and the connecting body 3-1; the sealing of the protective shaft and the connecting body 3-1 is achieved by means of an annular sealing gasket 9. At this time, the lower half portion of the T-shape of the inner ring of the annular packing 9 is located in an annular groove of the joint body 3-1.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.