CN210623102U

CN210623102U - Novel centrifugal pump

Info

Publication number: CN210623102U
Application number: CN201921558383.9U
Authority: CN
Inventors: 陈林; 李本亮
Original assignee: Zhejiang Xingao Pump Valve System Co ltd
Current assignee: Zhejiang Xingao Pump Valve System Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-05-26
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a novel centrifugal pump, which comprises a pump body and a motor arranged at the top of the pump body, wherein the bottom of the pump body is provided with an impurity filtering box, the impurity filtering box comprises a stainless steel positioning plate and a stainless steel fine filtering net, the stainless steel positioning plate is detachably connected with the lower end of the pump body, a flexible material middle filtering layer is sleeved on the outer surface of the stainless steel fine filtering net, and a stainless steel coarse filtering net is sleeved on the outer surface of the flexible material middle filtering layer; the middle part of the upper end face of the stainless steel positioning plate is fixedly provided with a positioning bearing, the motor comprises a motor support and a motor shaft, the lower end of the motor shaft is provided with a threaded connection part, the threaded connection part is provided with an impeller assembly, the impeller assembly comprises a threaded pipe, a positioning shaft and impeller blades, and the lower end of the positioning shaft is inserted into a bearing inner hole of the positioning bearing. Above-mentioned technical scheme, structural design is reasonable, simple structure, job stabilization, impeller are not fragile, the impeller is easily changed, long service life and practicality are good.

Description

Novel centrifugal pump

Technical Field

The utility model relates to a pump equipment technical field, concretely relates to novel centrifugal pump.

Background

A centrifugal pump is a water pumping machine which utilizes the centrifugal motion of water. Before the centrifugal pump is started, water is filled into the pump, the impeller which rotates after the centrifugal pump is started drives the water in the pump to rotate at a high speed, and the water is centrifugally moved, thrown outwards and pressed into the water outlet pipe. After the water is thrown out, the pressure near the impeller is reduced, and a low-pressure area is formed near the rotating shaft. The pressure is much lower than the atmospheric pressure, and the outside water can open the bottom valve and enter the pump from the water inlet pipe under the action of the atmospheric pressure. The water rushed in is thrown out again in high-speed rotation along with the impeller and is pressed into the water outlet pipe. The impeller is driven by the power machine to rotate at a high speed continuously, and water is continuously pumped from a low position to a high position.

The impeller is one of the most important part at the in-process of work, and the impeller damages or rocks greatly, can cause the work of whole centrifugal pump unstable, and in addition, the aquatic contains impurity, permanent work, and the impeller damages easily, but, current centrifugal pump structure sets up unreasonablely, and the impeller is difficult for changing, influences the life of pump, and the practicality is poor.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a novel centrifugal pump that structural design is reasonable, simple structure, job stabilization, impeller are not fragile, the impeller is easily changed, long service life and practicality are good.

In order to achieve the above purpose, the utility model provides a following technical scheme: a novel centrifugal pump comprises a pump body and a motor arranged at the top of the pump body, wherein a centrifugal chamber is arranged in the pump body, a water outlet pipe orifice is formed in the centrifugal chamber, an impurity filtering box is arranged at the bottom of the pump body and comprises a stainless steel positioning plate and a stainless steel fine filtering net, the stainless steel positioning plate is detachably connected with the lower end of the pump body, a plurality of centrifugal chamber water inlet holes are formed in the stainless steel positioning plate, the stainless steel fine filtering net is of a cuboid structure, and the upper end of the stainless steel fine filtering net is fixedly welded with the lower end face of the stainless steel positioning plate; the outer surface of the stainless steel fine filter screen is sleeved with a flexible material middle filter layer, and the outer surface of the flexible material middle filter layer is sleeved with a stainless steel coarse filter screen; the fixed location bearing that is provided with in up end middle part of stainless steel locating plate, the motor includes motor support and motor shaft, and in the motor shaft stretched into the centrifugal chamber down, and the motor shaft lower extreme was provided with threaded connection portion, threaded connection has the impeller subassembly on the threaded connection portion, the impeller subassembly includes screwed pipe, location axle and impeller blade, screwed pipe upper end and threaded connection portion threaded connection, screwed pipe side and impeller blade one end welded fastening, screwed pipe lower extreme and the epaxial welded fastening of location, location axle lower extreme insert in location bearing hole.

The utility model discloses further set up to: a plurality of positioning bolts penetrate through the stainless steel fine filter screen, the flexible material middle filter layer and the stainless steel coarse filter screen, and the stainless steel fine filter screen, the flexible material middle filter layer and the stainless steel coarse filter screen are fixedly connected through the positioning bolts.

The utility model discloses still further set up to: the wall thickness of the stainless steel fine filter screen is 1.5mm, the wall thickness of the flexible material middle filter layer is 1-5mm, and the wall thickness of the stainless steel coarse filter screen is 1-3 mm.

The utility model discloses still further set up to: the flexible material middle filter layer is an activated carbon filter screen, a sponge filter layer or a gauze filter layer.

The utility model discloses still further set up to: the outer surface of the threaded pipe is at least provided with one screw hole, each screw hole is internally and threadedly connected with one limit screw, and the threaded pipe is locked through the limit screws.

The utility model discloses still further set up to: the motor is connected with the pump body through the motor support, and the motor shaft, the threaded pipe, the positioning shaft, the impeller blade and the limiting screw are all made of stainless steel materials.

The utility model has the advantages that: compared with the prior art, the utility model has the advantages of more reasonable structure, easy assembly and disassembly of the impeller assembly, reliable connection, simple replacement and convenient maintenance; the impurity filtering box is sequentially provided with a stainless steel coarse filtering net, a flexible material intermediate filtering layer and a stainless steel fine filtering net from outside to inside, water can be contacted with the impeller assembly after being filtered for three times, and various impurities in the water can be effectively removed by the impurity filtering box, so that the impeller assembly is not easy to damage, and the service life is prolonged; in addition, a positioning shaft and a positioning bearing are arranged below the impeller assembly, so that the impeller assembly is small in shaking during rotation and stable in working, and the service life of the centrifugal pump is prolonged; the whole novel centrifugal pump is reasonable in structural design, simple in structure, stable in work, not easy to damage the impeller, easy to replace the impeller, long in service life and good in practicability.

The invention is further described with reference to the drawings and the specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an enlarged schematic view of a portion I in fig. 1.

Detailed Description

In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and 2, the utility model discloses a novel centrifugal pump, including pump body 1 and motor 2 arranged at the top of pump body 1, be provided with centrifugal chamber 11 in the pump body 1, be provided with outlet pipe 111 on the centrifugal chamber 11, the bottom of pump body 1 is provided with impurity filter box 3, impurity filter box 3 includes stainless steel locating plate 31 and stainless steel fine filter screen 32, stainless steel locating plate 31 can be dismantled with the lower extreme of pump body 1 and be connected, and is provided with a plurality of centrifugal chamber inlet openings 311 on the stainless steel locating plate 31, stainless steel fine filter screen 32 is the cuboid structure, and stainless steel fine filter screen 32 upper end and the lower terminal surface welded fastening of stainless steel locating plate 31; the outer surface of the stainless steel fine filter screen 32 is sleeved with a flexible material middle filter layer 33, and the outer surface of the flexible material middle filter layer 33 is sleeved with a stainless steel coarse filter screen 34; the fixed positioning bearing 4 that is provided with in up end middle part of stainless steel locating plate 31, motor 2 includes motor support 21 and motor shaft 22, and motor shaft 22 stretches into centrifugal chamber 11 downwards, and the motor shaft 22 lower extreme is provided with threaded connection portion 221, threaded connection has impeller subassembly 5 on the threaded connection portion 221, impeller subassembly 5 includes screwed pipe 51, location axle 52 and impeller blade 53, screwed pipe 51 upper end and threaded connection portion 221 threaded connection, screwed pipe 51 side and impeller blade 53 one end welded fastening, screwed pipe 51 lower extreme and location axle 52 upper end welded fastening, and location axle 52 lower extreme inserts in positioning bearing 4's the bearing hole.

Preferably, at least one centrifugal chamber water inlet hole 311 is formed in the stainless steel positioning plate 31, and the impurity filtering tank 3 is communicated with the centrifugal chamber 11 through the centrifugal chamber water inlet hole 311; the stainless steel positioning plate 31 is fixedly connected with the lower end of the pump body 1 through bolts or screws; the positioning bearing 4 and the upper end face of the stainless steel positioning plate 31 are fixed by welding or by the existing screw connection.

For making the utility model discloses the structure sets up more rationally, as preferred, this embodiment wear to be equipped with a plurality of positioning bolt 35 between stainless steel smart filter screen 32, the middle filter layer 33 of flexible material and the stainless steel coarse filtration net 34, and connect fixedly through positioning bolt 35 between stainless steel smart filter screen 32, the middle filter layer 33 of flexible material and the stainless steel coarse filtration net 34.

The wall thickness of the stainless steel fine filter screen 32 is 1.5mm, the wall thickness of the flexible material middle filter layer 33 is 1-5mm, and the wall thickness of the stainless steel coarse filter screen 34 is 1-3 mm.

The flexible material middle filter layer 33 is an activated carbon filter screen, a sponge filter layer or a gauze filter layer.

The outer surface of the threaded pipe 51 is provided with at least one screw hole, each screw hole is in threaded connection with a limit screw 6, and the threaded pipe 51 is locked through the limit screws 6.

The motor 2 is connected with the pump body 1 through a motor bracket 21, and the motor shaft 22, the threaded pipe 51, the positioning shaft 52, the impeller blades 53 and the limit screws 6 are all made of stainless steel materials. Preferably, the motor bracket 21 is fixedly connected with the motor 2 and the pump body 1 through screws.

In practical application, the impeller assembly is easy to assemble and disassemble, reliable in connection, simple to replace and convenient to maintain; the impurity filtering box is sequentially provided with a stainless steel coarse filtering net, a flexible material intermediate filtering layer and a stainless steel fine filtering net from outside to inside, water can be contacted with the impeller assembly after being filtered for three times, and various impurities in the water can be effectively removed by the impurity filtering box, so that the impeller assembly is not easy to damage, and the service life is prolonged; in addition, a positioning shaft and a positioning bearing are arranged below the impeller assembly, so that the impeller assembly is small in shaking during rotation and stable in working, and the service life of the centrifugal pump is prolonged; the whole novel centrifugal pump is reasonable in structural design, simple in structure, stable in work, not easy to damage the impeller, easy to replace the impeller, long in service life and good in practicability.

The above embodiments are only used for further explanation of the present invention, and it is not understood that the present invention is limited by the protection scope of the present invention, and the technical engineers in the field are right according to the above contents of the present invention.

Claims

1. The utility model provides a novel centrifugal pump, includes the pump body (1) and sets up motor (2) at pump body (1) top, be provided with centrifugal chamber (11) in the pump body (1), be provided with outlet pipe mouth (111) on centrifugal chamber (11), its characterized in that: the bottom of the pump body (1) is provided with an impurity filtering box (3), the impurity filtering box (3) comprises a stainless steel positioning plate (31) and a stainless steel fine filtering net (32), the stainless steel positioning plate (31) is detachably connected with the lower end of the pump body (1), the stainless steel positioning plate (31) is provided with a plurality of centrifugal chamber water inlet holes (311), the stainless steel fine filtering net (32) is of a cuboid structure, and the upper end of the stainless steel fine filtering net (32) is fixedly welded with the lower end face of the stainless steel positioning plate (31); the outer surface of the stainless steel fine filter screen (32) is sleeved with a flexible material middle filter layer (33), and the outer surface of the flexible material middle filter layer (33) is sleeved with a stainless steel coarse filter screen (34); the upper end face middle part of stainless steel locating plate (31) is fixed and is provided with a location bearing (4), motor (2) are including motor support (21) and motor shaft (22), and motor shaft (22) stretch into centrifugal chamber (11) down in, and motor shaft (22) lower extreme is provided with threaded connection portion (221), threaded connection has impeller subassembly (5) on threaded connection portion (221), impeller subassembly (5) are including screwed pipe (51), location axle (52) and impeller piece (53), screwed pipe (51) upper end and threaded connection portion (221) threaded connection, screwed pipe (51) side and impeller piece (53) one end welded fastening, screwed pipe (51) lower extreme and location axle (52) upper end welded fastening, location axle (52) lower extreme inserts in the bearing hole of location bearing (4).

2. The new centrifugal pump of claim 1, characterized in that: a plurality of positioning bolts (35) penetrate through the stainless steel fine filter screen (32), the flexible material middle filter layer (33) and the stainless steel coarse filter screen (34), and the stainless steel fine filter screen (32), the flexible material middle filter layer (33) and the stainless steel coarse filter screen (34) are fixedly connected through the positioning bolts (35).

3. A novel centrifugal pump according to claim 2, characterized in that: the wall thickness of the stainless steel fine filter screen (32) is 1.5mm, the wall thickness of the flexible material middle filter layer (33) is 1-5mm, and the wall thickness of the stainless steel coarse filter screen (34) is 1-3 mm.

4. A novel centrifugal pump according to claim 3, characterized in that: the flexible material middle filter layer (33) is an activated carbon filter screen, a sponge filter layer or a gauze filter layer.

5. The new centrifugal pump of claim 4, characterized in that: the outer surface of the threaded pipe (51) is at least provided with one screw hole, each screw hole is internally and threadedly connected with one limit screw (6), and the threaded pipe (51) is locked through the limit screws (6).

6. The new centrifugal pump of claim 5, characterized in that: the motor (2) is connected with the pump body (1) through a motor support (21), and the motor shaft (22), the threaded pipe (51), the positioning shaft (52), the impeller blade (53) and the limiting screw (6) are all made of stainless steel materials.