CN214170853U

CN214170853U - Full tubular pump with novel transmission structure

Info

Publication number: CN214170853U
Application number: CN202023000994.7U
Authority: CN
Inventors: 焦海峰; 陈松山; 秦钟建; 杨宇; 朱亚东; 周正富
Original assignee: Yangzhou University
Current assignee: Yangzhou University
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-09-10
Anticipated expiration: 2030-12-14

Abstract

A full tubular pump with a novel transmission structure belongs to the technical field of hydraulic engineering equipment and is formed by connecting a water guide cone, a rotor, a sealing assembly, a guide vane, a hub, an impeller and a bearing; impeller and rotor form an overall structure, external motor is rotatory through taking the transmission drive rotor, the rotor drives the rotatory power of doing of impeller then, be equipped with seal assembly between rotor and the both sides water pump pipeline, compensate the big and poor defect of sealed effect of traditional rubber pad sealed frictional resistance, water pump impeller rotates no longer by built-in motor drive, the pipeline wall has been avoided destroying, the overall structure integrality of device has been improved, the runner can adopt the straight tube type, needn't make return bend and shaft type, the water flow state is even straight, the velocity of flow degree of consistency improves, hydraulic loss reduces, effectively improve pump unit efficiency, the wheel hub diameter reduces by a wide margin, the working area increase of blade, effectively improve pump unit's efficiency.

Description

Full tubular pump with novel transmission structure

Technical Field

The utility model belongs to the technical field of hydraulic engineering equipment, a tubular pump is related to, especially relate to a novel transmission structure's full tubular pump.

Background

The water pump is a hydraulic machine for transferring energy, the mechanical energy of the motor is converted into potential energy and kinetic energy of water, and the energy is transferred between the motor and the impeller of the water pump mainly through a transmission shaft. Due to the volume limitation of the motor, the motor is usually arranged outside the flow channel, and the transmission shaft needs to penetrate through the flow channel to be connected with the impeller. At present, axial flow pumps, shaft type tubular pumps and bulb type tubular pumps which are mainstream are all of water pump structural types with external motors, however, flow channels in the structural types are not straight and straight, so that the performance of a unit and the flow state of water flow are greatly influenced, the sealing difficulty of the contact surface of a transmission shaft and the side wall of the flow channel is high, and leakage is easy to occur.

At present widely used full tubular pump is through installing the motor on the rotor, and the round stator is installed again to the rotor outside, and rotor and impeller are a whole, and the rotor rotates through the electromagnetism principle after the circular telegram to drive the impeller and do work, but this kind of drive mode realizes the degree of difficulty great, and the motor is difficult to completely with water isolated, leads to motor trouble intaking easily. Therefore, the research on the full-through flow pump without the built-in pump shaft has important significance for improving the safety and the operation stability of the water pump unit.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the purpose is to the not enough that exists among the above-mentioned prior art, provides a novel transmission structure's full tubular pump, through changing the transmission structure of full tubular pump, can avoid destroying pipeline wall, improve the overall structure integrality of device, improves the runner pattern, improves the velocity of flow degree of consistency, reduces hydraulic loss, effectively improves pump unit efficiency, can compensate the big and poor defect of sealed effect of traditional rubber pad sealed frictional resistance, can effectively improve water pump unit's stability.

The technical scheme of the utility model is that: a full tubular pump with a novel transmission structure comprises a water pump pipeline, a hub arranged in the water pump pipeline, a water guide cone arranged at the front end of the hub and a guide vane arranged at the rear end of the hub; the method is characterized in that: the water pump pipeline is characterized in that a section is arranged in the middle of the water pump pipeline between the water guide cone and the guide vane, a rotor is arranged at the section, an impeller is fixedly connected to the inner wall of the rotor, a transmission shaft is fixedly arranged at the center of the impeller, two ends of the transmission shaft are rotatably connected with hubs at two sides through rolling bearings, gear teeth are arranged on the outer wall of the rotor, a sealing assembly and a thrust bearing are sequentially connected between two end faces of the rotor and the section of the water pump pipeline from inside to outside, and the sealing assembly is composed of a moving ring, a left stationary ring, a right stationary ring, a corrugated pipe and a spring; the rotating ring is sleeved on the rotor, the left static ring is arranged on the right side face of the rotating ring, the right static ring is sleeved on the water pump pipeline, the corrugated pipe is connected between the left static ring and the right static ring, the spring is arranged outside the left static ring, the corrugated pipe and the right static ring, and the left static ring is tightly attached to the rotating ring under the action of the spring.

The rolling bearing is composed of an inner ring, an outer ring and rollers, a first key groove is formed in the inner wall of the inner ring, a second key groove is formed in the outer wall of the outer ring, the first key groove and the transmission shaft form circumferential fixing through keys, and the second key groove and the hubs on the two sides form circumferential fixing through keys.

The opposite surfaces of the left static ring and the right static ring are respectively provided with a flange, one end of the spring is sleeved on the flange of the left static ring, and the other end of the spring is sleeved on the flange of the right static ring.

The number of the gear teeth is not less than 4, and the gear teeth are meshed with an external belt.

The sealing assemblies are arranged on the left side and the right side of the rotor respectively, wherein the movable ring and the inner wall of the rotor form interference tight fit connection, and the right stationary ring and the water pump pipelines at the two ends form interference tight fit connection.

The utility model has the advantages that: the utility model provides a full tubular pump with a novel transmission structure, which is formed by connecting a water guide cone, a rotor, a sealing component, a guide vane, a hub, an impeller and a bearing; impeller and rotor form an overall structure, external motor is rotatory through taking the transmission drive rotor, the rotor drives the rotatory power of doing of impeller then, be equipped with seal assembly between rotor and the both sides water pump pipeline, compensate the big and poor defect of sealed effect of traditional rubber pad sealed frictional resistance, water pump impeller rotates no longer by built-in motor drive, the pipeline wall has been avoided destroying, the overall structure integrality of device has been improved, the runner can adopt the straight tube type, needn't make return bend and shaft type, the water flow state is even straight, the velocity of flow degree of consistency improves, hydraulic loss reduces, effectively improve pump unit efficiency, the wheel hub diameter reduces by a wide margin, the working area increase of blade, effectively improve pump unit's efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure of the middle rolling bearing of the present invention.

Fig. 3 is a schematic structural view of the middle seal assembly of the present invention.

In the figure: the water pump comprises a water pump pipeline 1, a thrust bearing 2, a rolling bearing 3, an outer ring 3-1, a second key groove 3-2, an inner ring 3-3, a first key groove 3-4, a roller 3-5, an impeller 4, a rotor 5, a sealing assembly 6, a moving ring 6-1, a left static ring 6-2, a corrugated pipe 6-3, a spring 6-4, a right static ring 6-5, a guide vane 7, a water guide cone 8, a hub 9, gear teeth 10 and a transmission shaft 11.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1-3, a full tubular pump with a novel transmission structure comprises a water pump pipeline 1, a hub 9 arranged inside the water pump pipeline 1, a water guide cone 8 arranged at the front end of the hub 9, and a guide vane 7 arranged at the rear end of the hub 9; the middle part of the water pump pipeline 1 between the water guide cone 8 and the guide vane 7 is provided with a section, the section is provided with a rotor 5, the inner wall of the rotor 5 is fixedly connected with an impeller 4, the center of the impeller 4 is fixedly provided with a transmission shaft 11, two ends of the transmission shaft 11 are rotationally connected with wheel hubs 9 at two sides through rolling bearings 3, the outer wall of the rotor 5 is provided with wheel teeth 10, two end faces of the rotor 5 and the section of the water pump pipeline 1 are sequentially connected with a sealing component 6 and a thrust bearing 2 from inside to outside, and the sealing component 6 consists of a movable ring 6-1, a left stationary ring 6-2, a right stationary ring 6-5, a corrugated pipe 6-3 and a spring 6-4; the rotor 5 is sleeved with the movable ring 6-1, the left stationary ring 6-2 is arranged on the right side face of the movable ring 6-1, the right stationary ring 6-5 is sleeved on the water pump pipeline 1, the corrugated pipe 6-3 is connected between the left stationary ring 6-2 and the right stationary ring 6-5, the spring 6-4 is arranged outside the left stationary ring 6-2, the corrugated pipe 6-3 and the right stationary ring 6-5, and the left stationary ring 6-2 is tightly attached to the movable ring 6-1 under the action of the spring 6-4.

As shown in fig. 1-3, a full tubular pump with a novel transmission structure, a rolling bearing 3 is composed of an inner ring 3-3, an outer ring 3-1 and a roller 3-5, a first key groove 3-4 is arranged on the inner wall of the inner ring 3-3, a second key groove 3-2 is arranged on the outer wall of the outer ring 3-1, the first key groove 3-4 and a transmission shaft 11 form circumferential fixation through a key, and the second key groove 3-2 and hubs 9 on two sides form circumferential fixation through keys; flanges are arranged on the opposite surfaces of the left static ring 6-2 and the right static ring 6-5, one end of the spring 6-4 is sleeved on the flange of the left static ring 6-2, and the other end is sleeved on the flange of the right static ring 6-5; the number of the gear teeth 10 is not less than 4, and the gear teeth 10 are meshed and connected with an external belt; the sealing components 6 are divided into a left group and a right group, and are respectively arranged on the left side and the right side of the rotor 5, wherein the movable ring 6-1 is in interference tight fit connection with the inner wall of the rotor 5, and the right stationary ring 6-5 is in interference tight fit connection with the water pump pipelines 1 at the two ends.

As shown in fig. 1-3, the working principle of the whole through-flow pump with a novel transmission structure is as follows: the impeller and the rotor form a whole, the external motor drives the rotor to rotate through belt transmission, and the rotor drives the impeller to rotate to do work. The impeller hub and the inlet and outlet guide impeller hub are supported by a rolling bearing, and the contact surfaces of the hub and the rolling bearing are connected by a key to prevent mutual dislocation. The movable ring is contacted with the side surface of the rotor, the static ring is contacted with the side wall of the pipeline, and the movable ring surface and the static ring surface are kept attached under the action of certain pressure to achieve the effects of sealing and leakage resistance. Thrust bearings are arranged between the rotors on the two sides and the pipeline wall, and axial thrust generated when the impeller rotates is balanced.

Claims

1. A full tubular pump with a novel transmission structure comprises a water pump pipeline (1), a hub (9) arranged inside the water pump pipeline (1), a water guide cone (8) arranged at the front end of the hub (9), and a guide vane (7) arranged at the rear end of the hub (9); the method is characterized in that: the middle part of the water pump pipeline (1) between the water guide cone (8) and the guide vane (7) is provided with a section, a rotor (5) is arranged at the section, an impeller (4) is fixedly connected on the inner wall of the rotor (5), a transmission shaft (11) is tightly fixed at the center of the impeller (4), two ends of the transmission shaft (11) are rotationally connected with the hubs (9) at two sides through rolling bearings (3), gear teeth (10) are arranged on the outer wall of the rotor (5), a sealing component (6) and a thrust bearing (2) are sequentially connected between the two end faces of the rotor (5) and the section of the water pump pipeline (1) from inside to outside, the sealing assembly (6) consists of a movable ring (6-1), a left static ring (6-2), a right static ring (6-5), a corrugated pipe (6-3) and a spring (6-4); the rotor is characterized in that the rotor (5) is sleeved with the movable ring (6-1), the left static ring (6-2) is arranged on the right side face of the movable ring (6-1), the right static ring (6-5) is sleeved on the water pump pipeline (1), a corrugated pipe (6-3) is connected between the left static ring (6-2) and the right static ring (6-5), the spring (6-4) is arranged outside the left static ring (6-2), the corrugated pipe (6-3) and the right static ring (6-5), and the left static ring (6-2) is tightly attached to the movable ring (6-1) under the action of the spring (6-4).

2. The full tubular pump with a novel transmission structure as claimed in claim 1, wherein: the rolling bearing (3) is composed of an inner ring (3-3), an outer ring (3-1) and rollers (3-5), a first key groove (3-4) is formed in the inner wall of the inner ring (3-3), a second key groove (3-2) is formed in the outer wall of the outer ring (3-1), the first key groove (3-4) and the transmission shaft (11) form circumferential fixation through keys, and the second key groove (3-2) and the wheel hubs (9) on the two sides form circumferential fixation through keys.

3. The full tubular pump with a novel transmission structure as claimed in claim 1, wherein: the opposite surfaces of the left static ring (6-2) and the right static ring (6-5) are respectively provided with a flange, one end of the spring (6-4) is sleeved on the flange of the left static ring (6-2), and the other end is sleeved on the flange of the right static ring (6-5).

4. The full tubular pump with a novel transmission structure as claimed in claim 1, wherein: the number of the gear teeth (10) is not less than 4, and the gear teeth (10) are meshed and connected with an external belt.

5. The full tubular pump with a novel transmission structure as claimed in claim 1, wherein: the sealing assemblies (6) are arranged on the left side and the right side of the rotor (5) respectively, wherein the moving ring (6-1) is in interference tight fit connection with the inner wall of the rotor (5), and the right static ring (6-5) is in interference tight fit connection with the water pump pipelines (1) at the two ends.