CN219317212U

CN219317212U - Novel submerged pump

Info

Publication number: CN219317212U
Application number: CN202320901079.XU
Authority: CN
Inventors: 周辉
Original assignee: Yunnan Yufei Machinery Co ltd
Current assignee: Yunnan Yufei Machinery Co ltd
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-07-07
Anticipated expiration: 2033-04-20

Abstract

The utility model discloses a novel submerged pump, which comprises a hollow frame, a driving device, a pump body, an impeller and a liquid outlet pipe, wherein a pump shell is fixed between the hollow frame and the pump body, a circular tube-shaped transmission shaft and a fixed shaft are sequentially and coaxially arranged in the pump shell from outside to inside, an oil passing gap is reserved between the transmission shaft and the fixed shaft, the upper end of the fixed shaft is fixedly connected with the top of the hollow frame, the lower end of the fixed shaft is connected with a shaft head, an oil through hole is formed in the shaft head in a penetrating manner, the shaft head is connected with the transmission shaft through a lower bearing, the top of the hollow frame is provided with an oil filling hole communicated with an inner cavity of the fixed shaft, a rotating wheel is connected on the fixed shaft in the hollow frame through an upper bearing, the lower end of the rotating wheel is fixedly connected with the upper end of the transmission shaft, the lower end of the transmission shaft is sequentially connected with an end cover and a connecting rod, the connecting rod is connected with the impeller after extending into the pump body, and the driving device is in transmission connection with the rotating wheel. The bearing has the advantages of good lubricity, long service life, small running resistance, good stability and obvious economic and social values.

Description

Novel submerged pump

Technical Field

The utility model relates to the technical field of pumps, in particular to a novel submerged pump.

Background

The submerged pump is widely applied to industries such as petroleum, chemical industry, steel, papermaking, printing and dyeing, environmental protection and the like, is used for conveying various corrosive liquids and clear water, when the submerged pump is used, the pump body and the impeller are positioned under the liquid, the impeller is driven to rotate by the motor, blades in the impeller force the liquid to rotate, the energy of the liquid is increased, the liquid is thrown to the periphery of the impeller under the action of centrifugal force, the speed can be converted into pressure energy through a vortex channel of the pump body, when the liquid in the impeller is thrown out through the liquid outlet pipe, the pressure in the impeller is lower than the inlet pressure, and new liquid is sucked into the impeller under the action of pressure difference, so that the purpose of continuously conveying various liquids to the outside of the pump is achieved.

At present, the submerged pump has the following problems in the use process: the bearing is arranged on the transmission shaft of the pump, but the use environment of the bearing is rough, dust prevention and water prevention measures are not provided, lubricating grease is often used for lubrication, the bearing is often immersed in liquid, solid particles and other impurities in the liquid are easy to be immersed in the liquid, and the problems of high bearing abrasion speed, short service life, poor lubricity, high running resistance and the like are caused; secondly, the cantilever length of transmission shaft is overlength, and the interference degree is great, and stability is not good, and the transmission shaft easily produces vibration and noise when the operation has seriously influenced the life and the operational environment of pump. Therefore, the development of a novel submerged pump with good bearing lubricity, long service life, small running resistance and good stability is objectively required.

Disclosure of Invention

The utility model aims to provide a novel submerged pump with good bearing lubricity, long service life, small running resistance and good stability.

The utility model aims at realizing the purposes, comprising a hollow frame, a driving device, a pump body, an impeller and a liquid outlet pipe, wherein a pump shell is fixed between the hollow frame and the pump body, a circular tube-shaped transmission shaft and a fixed shaft are coaxially arranged in the pump shell from outside to inside in sequence, an oil passing gap is reserved between the transmission shaft and the fixed shaft, the upper end of the fixed shaft is fixedly connected with the top of the hollow frame, the lower end of the fixed shaft is connected with a shaft head, an oil through hole is formed in the shaft head in a penetrating manner, the shaft head is connected with the transmission shaft through a lower bearing, the top of the hollow frame is provided with an oil filling hole communicated with the inner cavity of the fixed shaft, a rotating wheel is connected on the fixed shaft in the hollow frame through an upper bearing, the lower end of the rotating wheel is fixedly connected with the upper end of the transmission shaft, the lower end of the transmission shaft is sequentially connected with an end cover and a connecting rod, the connecting rod is connected with the impeller after extending into the pump body, and the driving device is in transmission connection with the rotating wheel.

Further, an annular sealing cover is arranged at the upper end of the rotating wheel, and a sealing ring is arranged between the inner ring of the sealing cover and the outer wall of the fixed shaft.

Further, the lower end of the transmission shaft is in threaded sealing connection with the end cover.

Further, the oil filling hole is a threaded hole, and a screwed plug is screwed into the threaded hole.

Further, the pump shell is connected with the hollow frame, the pump shell is connected with the pump body, the fixed shaft is connected with the hollow frame, and the transmission shaft is connected with the rotating wheel through flanges.

Further, the driving device comprises a motor and a driving wheel arranged on an output shaft of the motor, the motor is arranged on the hollow frame, and a triangle belt is arranged between the driving wheel and the rotating wheel.

Further, the hollow frame comprises an upper supporting plate and a lower supporting plate which are arranged at intervals, a plurality of supporting shafts are uniformly distributed on the circumference between the upper supporting plate and the lower supporting plate, the upper end of the fixed shaft is fixed on the upper supporting plate, the upper end of the pump shell is fixedly connected with the lower supporting plate, and the rotating wheel is positioned on the fixed shaft between the upper supporting plate and the lower supporting plate.

Further, the fixed shaft and the transmission shaft are identical in structure and comprise a plurality of sections which are sequentially connected from top to bottom and gradually reduced in pipe diameter.

Further, a shaft sleeve is arranged on the fixed shaft, and an upper bearing is arranged on the shaft sleeve.

When the liquid pump is in operation, one end of the pump body extends into the liquid, the driving device is started, the driving device drives the rotating wheel to rotate, the rotating wheel drives the transmission shaft to rotate, the fixed shaft is in a fixed state, and the transmission shaft sequentially drives the end cover, the connecting rod and the impeller to rotate when rotating, so that liquid is discharged from the liquid outlet pipe. In the utility model, the lower bearing is arranged on the shaft head at the lower end of the fixed shaft, compared with the existing submerged pump, the lower bearing moves to one end close to the impeller, thus prolonging the supporting distance between the upper bearing and the lower bearing, greatly shortening the cantilever length of the transmission shaft, reducing the disturbance degree, improving the stability of the transmission shaft, the impeller and other rotating parts, controlling the runout of the shaft end to be less than 0.1mm, reducing the radial runout of the transmission shaft and the impeller during rotation, further reducing the rapid abrasion of the impeller, the pump body, the transmission shaft and the bearing caused by the runout, prolonging the service life of the whole submerged pump and reducing the noise; secondly, form the encirclement between runner, transmission shaft and the end cover, parts such as upper bearing, fixed axle and lower bearing all are located this encirclement space, namely the bearing has carried out the full seal, the service environment of bearing has been optimized, dustproof, waterproof effect has been played, the problem that the bearing was immersed in liquid has been stopped, and adopt lubricating oil to lubricate the bearing, during lubrication, in adding the fixed axle with lubricating oil from the tank filler hole, fall along the inner chamber in the fixed axle earlier, after falling to the bottom, continue to fall to in the end cover along the oil through hole of spindle nose inside, then constantly upwards flow along the oil clearance under the oil pressure effect, can lubricate lower bearing and upper bearing in succession, lubrication operation is comparatively simple, it is more convenient to change and supplement lubricating oil, compared with traditional submerged pump use lubricating grease's mode, the mobility and the radiating effect of lubricating oil are better, the lubricating property is better, the running resistance of bearing has been reduced, and then the running resistance of whole equipment is lower, the energy consumption is lower, when the flow is the same, the power that consumes is lower. The bearing has the advantages of good lubricity, long service life, small running resistance, good stability and obvious economic and social values.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an enlarged schematic view of the node A in FIG. 1;

FIG. 3 is an enlarged schematic view of the node B of FIG. 1;

fig. 4 is a schematic structural view of the shaft head 9 in the present utility model;

in the figure: the device comprises a hollow frame, a 101-upper supporting plate, a 102-lower supporting plate, a 103-supporting shaft, a 2-pump body, a 3-impeller, a 4-liquid outlet pipe, a 5-pump shell, a 6-transmission shaft, a 7-fixed shaft, an 8-oil passing gap, a 9-shaft head, a 10-oil passing hole, a 11-lower bearing, a 12-oil filling hole, a 13-upper bearing, a 14-rotating wheel, a 15-connecting rod, a 16-sealing cover, a 17-sealing ring, a 18-end cover, a 19-plug, a 20-motor, a 21-driving wheel, a 22-V-belt and a 23-shaft sleeve.

Description of the embodiments

The utility model is further described below with reference to the accompanying drawings, without limiting the utility model in any way, and any alterations or modifications based on the utility model are within the scope of the utility model.

As shown in fig. 1 to 4, the utility model comprises a hollow frame 1, a driving device, a pump body 2, an impeller 3 and a liquid outlet pipe 4, wherein the hollow frame 1, the driving device, the pump body 2, the impeller 3 and the liquid outlet pipe 4 are all of the prior structure, the hollow frame 1 is a hollow bracket in the interior, the whole submerged pump is supported, the driving device is used for providing power to drive a rotating wheel 14 to rotate so as to drive rotating parts such as the impeller 3 of the submerged pump to rotate, the impeller 3 is arranged in the pump body 2, liquid is thrown out to the periphery during rotation so as to promote the liquid to be discharged from the liquid outlet pipe 4, a pump shell 5 is fixed between the hollow frame 1 and the pump body 2, the pump shell 5 is of a hollow structure and is used for protecting parts such as a transmission shaft 6 in the interior and connecting and fixing the pump body 2, a circular transmission shaft 6 and a fixed shaft 7 are coaxially arranged in the pump shell 5 in sequence from outside to inside, an oil passing gap 8 is reserved between a transmission shaft 6 and a fixed shaft 7, a certain gap is reserved between the transmission shaft 6 and the fixed shaft 7 and used for lubricating oil circulation, the upper end of the fixed shaft 7 is fixedly connected with the top of a hollow frame 1, the lower end of the fixed shaft 7 is connected with a shaft head 9, an oil passing hole 10 is formed in the shaft head 9 in a penetrating manner, when lubricating oil is added, the lubricating oil is directly added from an oil adding hole 12 at the top of the hollow frame 1, thus the lubricating oil can fall into the fixed shaft 7 firstly, the oil passing hole 10 is formed in the shaft head 9 and used for communicating the inner space of the fixed shaft 7 with the oil passing gap 8, the shaft head 9 is connected with the transmission shaft 6 through a lower bearing 11, the oil adding hole 12 communicated with the inner cavity of the fixed shaft 7 is formed in the top of the hollow frame 1, a rotating wheel 14 is connected on the fixed shaft 7 in the hollow frame 1 through an upper bearing 13, the lower end of the rotating wheel 14 is fixedly connected with the upper end of the transmission shaft 6, the lower end of the transmission shaft 6 is sequentially connected with an end cover 18 and a connecting rod 15, the connecting rod 15 stretches into the pump body 2 and then is connected with the impeller 3, and the driving device is in transmission connection with the rotating wheel 14.

When the utility model is operated, one end of the pump body 2 is extended into the liquid, the driving device is started, the driving device drives the rotating wheel 14 to rotate, the rotating wheel 14 drives the transmission shaft 6 to rotate, the fixed shaft 7 is in a fixed state, and the transmission shaft 6 sequentially drives the end cover 18, the connecting rod 15 and the impeller 3 to rotate when rotating, so that the liquid is discharged from the liquid outlet 4 pipe. In the utility model, the lower bearing 11 is arranged on the shaft head 9 at the lower end of the fixed shaft 7, compared with the existing submerged pump, the lower bearing 11 moves to the end close to the impeller 3, so that the supporting distance between the upper bearing 13 and the lower bearing 11 is prolonged, the cantilever length of the transmission shaft 6 is greatly shortened, the disturbance degree is reduced, the stability of rotating parts such as the transmission shaft 6 and the impeller 3 is improved, the runout of the shaft end is controlled below 0.1mm, the radial runout of the transmission shaft 6 and the impeller 3 during rotation is reduced, the rapid abrasion of the impeller 3, the pump body 2, the transmission shaft 6 and the bearing due to the overlarge runout is further reduced, the service life of the whole submerged pump is prolonged, and the noise is reduced; secondly, form the encirclement between runner 14, transmission shaft 6 and the end cover 18, upper bearing 13, fixed axle 7 and lower bearing 11 etc. all are located this encirclement space, namely the bearing has carried out the full seal, the service environment of bearing has been optimized, dustproof, waterproof effect has been played, the problem that the bearing is immersed in liquid has been stopped, and adopt lubricating oil to lubricate the bearing, during lubrication, add lubricating oil from the tank filler neck 12 into in the fixed axle 7, fall down along the inner chamber in the fixed axle 7 earlier, after falling to the bottom, follow the oil hole 10 inside spindle nose 9 and continue to fall in the end cover 18, then constantly upwards flow along oily clearance 8 under the oil pressure effect, can lubricate lower bearing 11 and upper bearing 13 in succession, it is comparatively simple to lubricate the operation, it is more convenient to change and supply lubricating oil, compared with the mode that traditional submerged pump used lubricating grease to lubricate, the mobility and the radiating effect of lubricating oil are better, the lubricating property is better, the running resistance of bearing has been reduced, and then the running resistance of whole equipment is lower, the energy consumption is lower, and at the same flow, power consumption is lower.

The upper end of the rotating wheel 14 is provided with an annular sealing cover 16, a sealing ring 17 is arranged between the inner ring of the sealing cover 16 and the outer wall of the fixed shaft 7, the bearing is lubricated by adopting lubricating oil, the lubricating oil firstly enters the fixed shaft 7, then flows into an end cover 18 from an oil through hole 10 in the shaft head 9, finally flows upwards along an oil passing gap 8 to lubricate the bearing, and when the lubricating oil passes through the upper bearing 13, the lubricating oil continuously flows upwards, the lubricating oil possibly overflows from the upper end of the rotating wheel 14, so that the lubricating oil is wasted, and the sealing cover 16 and the sealing ring 17 are arranged for sealing so as to avoid the condition, and the lubricating oil is prevented from overflowing.

To facilitate the installation and the removal of the end cover 18, the lower end of the transmission shaft 6 is connected with the end cover 18 in a threaded sealing way.

The oil filling hole 12 is a threaded hole, the threaded hole is screwed with the plug 19, when the oil filling device is used, lubricating oil is added from the oil filling hole 12 to lubricate a bearing, in order to prevent dust or other impurities from entering the inner space of the fixed shaft 7 from the oil filling hole 12 and affecting the lubricating effect of the lubricating oil on the bearing, the plug 19 is adopted to plug the oil filling hole 12 in the normal use process, and other structure forms which are convenient to open and close can be adopted to plug the oil filling hole 12 in the use process.

In order to facilitate the disassembly and assembly of the whole submerged pump, the pump shell 5 and the hollow frame 1, the pump shell 5 and the pump body 2, the fixed shaft 7 and the hollow frame 1, and the transmission shaft 6 and the rotating wheel 14 are all connected through flanges.

The driving device comprises a motor 20 and a driving wheel 21 arranged on an output shaft of the motor 20, the motor 20 is arranged on the hollow frame 1, a triangular belt 22 is arranged between the driving wheel 21 and the rotating wheel 14, the motor 20 drives the driving wheel 21 to rotate during operation, the driving wheel 21 drives the rotating wheel 14 to rotate through the triangular belt 22 so as to drive the transmission shaft 6 and the impeller 3 to rotate, compared with the traditional driving device which adopts a transmission mode that the motor 20 and a coupling drive the transmission shaft 6 to rotate, the transmission mode of the triangular belt 22 has stable transmission, low noise, the functions of buffering and absorbing shock and relieving load impact, and has the advantages of simple structure, low manufacturing and installation precision requirements, convenient use, maintenance and adjustment, slipping during overload, and the functions of preventing the impeller 3 from being damaged and playing a role of safety protection.

The hollow frame 1 comprises an upper supporting plate 101 and a lower supporting plate 102 which are arranged at intervals, a plurality of supporting shafts 103 are uniformly distributed on the circumference between the upper supporting plate 101 and the lower supporting plate 102, the upper end of a fixed shaft 7 is fixed on the upper supporting plate 101, the upper end of a pump shell 5 is fixedly connected with the lower supporting plate 102, and a rotating wheel 14 is positioned on the fixed shaft 7 between the upper supporting plate 101 and the lower supporting plate 102. In order to facilitate the disassembly and assembly of the hollow frame 1 during actual manufacture, the support shaft 103 and the upper support plate 101 and the support shaft 103 and the lower support plate 102 can be connected by using studs, the hollow frame 1 can be in other forms, and the hollow frame 1 only needs to have good rigidity and strength and can play a good supporting role on the whole submerged pump.

The fixed shaft 7 and the transmission shaft 6 have the same structure and comprise a plurality of sections which are sequentially connected from top to bottom and gradually reduced in pipe diameter, and when the fixed shaft 7 and the transmission shaft 6 are manufactured, in order to adopt various existing materials, the manufacturing cost is saved, and the fixed shaft 7 and the transmission shaft 6 can be arranged into a plurality of section structures with different diameters.

The fixed shaft 7 is provided with the shaft sleeve 23, the upper bearing 13 is arranged on the shaft sleeve 23, the wall thickness of the fixed shaft 7 is not too thick, the upper bearing 13 is a fulcrum of the transmission shaft 6, the upper bearing 13 can be subjected to the force exerted by the transmission shaft 6 in the rotating process, the force can be transmitted to the fixed shaft 7 provided with the upper bearing 13, the fixed shaft 7 can be deformed, cracked or even broken in the long-term use process of the submerged pump, the shaft sleeve 23 is arranged in order to avoid the situation, the upper bearing 13 is separated from the fixed shaft 7 on one hand, the fixed shaft 7 is prevented from being in direct contact with the upper bearing 13, the fixed shaft 7 is prevented from being collided, the strength and the rigidity of the fixed shaft 7 are enhanced through the arrangement of the shaft sleeve 23, the service life of the fixed shaft 7 is prolonged, and finally, when the shaft sleeve 23 is worn or damaged and can not be used, the fixed shaft sleeve 23 is only replaced, the maintenance period is not required to be replaced, and the maintenance cost is also saved.

Claims

1. A novel submerged pump comprises a hollow frame (1), a driving device, a pump body (2), an impeller (3) and a liquid outlet pipe (4), and is characterized in that a pump shell (5) is fixed between the hollow frame (1) and the pump body (2), a round tubular transmission shaft (6) and a fixed shaft (7) are sequentially and coaxially arranged in the pump shell (5) from outside to inside, an oil passing gap (8) is reserved between the transmission shaft (6) and the fixed shaft (7), the upper end of the fixed shaft (7) is fixedly connected with the top of the hollow frame (1), the lower end of the fixed shaft is connected with a shaft head (9), an oil passing hole (10) is formed in the shaft head (9) in a penetrating manner, the shaft head (9) is connected with the transmission shaft (6) through a lower bearing (11), an oiling hole (12) communicated with the inner cavity of the fixed shaft (7) is formed in the top of the hollow frame (1), a rotating wheel (14) is connected onto the fixed shaft (7) through an upper bearing (13), the lower end of the rotating wheel (14) is fixedly connected with the upper end of the transmission shaft (6), the lower end of the transmission shaft (6) is sequentially connected with a connecting rod (15) and a connecting rod (15) which extends into the pump body (2), the driving device is in transmission connection with the rotating wheel (14).

2. The novel submerged pump according to claim 1, wherein an annular sealing cover (16) is arranged at the upper end of the rotating wheel (14), and a sealing ring (17) is arranged between the inner ring of the sealing cover (16) and the outer wall of the fixed shaft (7).

3. A novel submerged pump according to claim 1, characterized in that the lower end of the transmission shaft (6) is connected with the end cover (18) in a threaded sealing manner.

4. The novel submerged pump of claim 1, wherein the oil filler hole (12) is a threaded hole, and a plug (19) is screwed into the threaded hole.

5. The novel submerged pump of claim 1, wherein the pump housing (5) and the hollow frame (1), the pump housing (5) and the pump body (2), the fixed shaft (7) and the hollow frame (1) and the transmission shaft (6) and the rotating wheel (14) are all connected through flanges.

6. The novel submerged pump according to claim 1, wherein the driving device comprises a motor (20) and a driving wheel (21) arranged on an output shaft of the motor (20), the motor (20) is arranged on the hollow frame (1), and a V-belt (22) is arranged between the driving wheel (21) and the rotating wheel (14).

7. The novel submerged pump of claim 1, wherein the hollow frame (1) comprises an upper supporting plate (101) and a lower supporting plate (102) which are arranged at intervals, a plurality of supporting shafts (103) are uniformly distributed on the circumference between the upper supporting plate (101) and the lower supporting plate (102), the upper end of the fixed shaft (7) is fixed on the upper supporting plate (101), the upper end of the pump shell (5) is fixedly connected with the lower supporting plate (102), and the rotating wheel (14) is positioned on the fixed shaft (7) between the upper supporting plate (101) and the lower supporting plate (102).

8. The novel submerged pump of claim 1, wherein the fixed shaft (7) and the transmission shaft (6) have the same structure and each comprise a plurality of segments which are sequentially connected from top to bottom and gradually reduce in pipe diameter.

9. The novel submerged pump as claimed in claim 1, wherein the fixed shaft (7) is provided with a shaft sleeve (23), and the upper bearing (13) is mounted on the shaft sleeve (23).