CN218844612U

CN218844612U - Can mix volute pump of defeated by gas-liquid

Info

Publication number: CN218844612U
Application number: CN202223193511.9U
Authority: CN
Inventors: 刘艳
Original assignee: Shanghai Bainuo Pumps And Valves Co ltd
Current assignee: Shanghai Bainuo Pumps And Valves Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-04-11
Anticipated expiration: 2032-11-30

Abstract

The utility model relates to a vortex pump, which comprises a pump cavity mechanism, a driving mechanism and a mechanical seal cooling mechanism; the mechanical seal cooling mechanism comprises a circulating liquid inlet and a circulating liquid outlet which are arranged on the mechanical seal and communicated with the interior of the mechanical seal, and a buffer liquid cooler communicated with the circulating liquid inlet and the circulating liquid outlet. Compared with the prior art, the utility model discloses an use collection dress formula double mechanical seal as the shaft seal subassembly, guarantee better rotation seal effect, the rethread with buffer solution cooler and collection dress formula double mechanical seal circulation intercommunication to and the heat that the high-speed rotational friction in-process of taking away pump shaft and collection dress formula double mechanical seal produced, in order to avoid mechanical seal high temperature wearing and tearing, guarantee its steady operation.

Description

Peripheral pump capable of gas-liquid mixed transportation

Technical Field

The utility model belongs to the technical field of the volute pump, a but volute pump that gas-liquid thoughtlessly was defeated is related to.

Background

The centrifugal pump is a machine for conveying fluid or pressurizing fluid, is mainly used for conveying water, oil, acid-base liquid, emulsion, suspoemulsion, liquid metal and other liquids, can only convey material flow taking the fluid as a medium, and cannot convey solid and gas-containing media. When the conveying medium contains gas, the shaft seal in the pump is dry-burned and damaged due to liquid-deficient cooling and lubrication. In addition, the pump cavity has gas to cause unstable hydraulic power, pump exhaust cannot be discharged, and therefore flow and lift fluctuate, vibration of the pump and noise increase when bubbles break. When the transport medium contains particles, the typical shaft seal can abrade the seal ring or seal cross section, resulting in seal failure, and thus pump leakage, compromising production site safety.

The volute pump has the characteristic of insensitivity to working pressure fluctuation, so that most volute pumps have the condition of large pressure fluctuation range in the actual operation process, the problem of unbalance of axial force in the pump is undoubtedly amplified by the condition, and the pump shaft is easy to damage in the long-time working process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a but volute pump of gas-liquid miscarriage.

The purpose of the utility model can be realized through the following technical scheme:

a vortex pump comprising:

the pump cavity mechanism comprises a pump body and a pump cover which mutually surround to form a pump cavity, an open impeller arranged in the pump cavity, and a liquid inlet flow channel and a liquid outlet flow channel which are adjacently arranged on the pump body;

the driving mechanism comprises a pump shaft, a driving motor and a mechanical seal, wherein one end of the pump shaft is connected with the open impeller, the other end of the pump shaft extends out of the pump cover, the driving motor is in transmission connection with the extending end of the pump shaft, and the mechanical seal is arranged between the pump cover and the pump shaft; the mechanical seal is a cartridge type double-end-face mechanical seal; and

the mechanical seal cooling mechanism comprises a circulating liquid inlet and a circulating liquid outlet which are arranged on the mechanical seal and communicated with the interior of the mechanical seal, and a buffer liquid cooler communicated with the circulating liquid inlet and the circulating liquid outlet.

Further, the buffer solution cooler on be equipped with buffer solution drain pipe and buffer solution liquid return pipe, and the buffer solution cooler be linked together through buffer solution drain pipe and circulation inlet, be linked together through buffer solution liquid return pipe and circulation liquid outlet.

Furthermore, the buffer solution cooler comprises a cooler shell with a built-in cavity, a cooling liquid inlet and a cooling liquid outlet which are communicated with the cavity, and a cooling pipe arranged in the cavity,

the cooling tube is communicated with the buffer liquid outlet tube and the buffer liquid return tube.

Further, the cooling pipe is spirally arranged.

The vortex pump further comprises a self-balancing mechanism, wherein the self-balancing mechanism comprises a connecting through hole respectively penetrating through the inner side wall of the liquid inlet flow channel and the inner side wall of the liquid outlet flow channel, and a balancing rod with two ends respectively sliding in the connecting through hole in a sealing manner;

the two ends of the balancing rod are respectively arranged in the liquid inlet flow channel and the liquid outlet flow channel, and the self-balancing of the working pressure in the pump body is realized by adjusting the volume of the balancing rod which respectively extends into the liquid inlet flow channel and the liquid outlet flow channel.

Furthermore, an adjusting hole is formed in the outer side wall of the liquid outlet flow channel in a penetrating mode, an adjusting rod is arranged in the adjusting hole in a sealing and sliding mode, one end of the adjusting rod is in transmission connection with the balancing rod, and the other end of the adjusting rod extends out of the adjusting hole.

Furthermore, the adjusting rod is connected with the balancing rod through a transmission rod arranged in the liquid outlet flow channel.

Furthermore, the adjusting rod is connected with the balancing rod through an elastic piece arranged in the liquid outlet flow passage.

Further, the elastic member is a compression spring.

Furthermore, the vortex pump also comprises a base.

Compared with the prior art, the utility model has the characteristics of it is following:

1) The utility model ensures better rotary sealing effect by taking the integrated double-end-face mechanical seal as a shaft sealing component, and then circularly communicates the buffer cooler with the integrated double-end-face mechanical seal, and takes away the heat generated in the process of high-speed rotary friction between the pump shaft and the integrated double-end-face mechanical seal so as to avoid high-temperature abrasion of the mechanical seal and ensure the stable operation of the mechanical seal;

2) The utility model is provided with the balancing pole which can move in the liquid inlet flow passage and the liquid outlet flow passage, thereby the pressure difference between the water inlet pipeline and the water outlet pipeline can be properly balanced within a set range, and the working pressure in the pump is properly balanced, so that the fluctuation of the working pressure is within a design range, the excessive influence on the parts in the pump is avoided, and the service life of the working parts in the vortex pump is prolonged;

3) The pump and the motor of the utility model use a coaxial structure, the structure is simple, the efficiency is high, the number of easy-to-damage parts is small, the axial length is short, and the occupied area is reduced;

4) The utility model adopts the open impeller and the closed flow passage structure, and can transport gas and liquid in a mixed way and transport media containing particles;

5) The utility model selects the integrated double-end mechanical seal, is convenient to install, can change the flushing method according to the use working condition, and improves the service life and the application range of the pump;

6) The impeller of the utility model is of a symmetrical open structure, is suspended in the pump cover flow passage, does not need a locking nut and is not influenced by the positive and negative rotation of the motor;

7) The utility model discloses be provided with the through-hole of connection in pump body inlet and outlet pipe, wherein be provided with the balancing pole, but the life of pump is improved to automatic balance pump internal pressure.

Drawings

FIG. 1 is a schematic structural diagram of a gas-liquid mixture transport vortex pump in an embodiment;

FIG. 2 and FIG. 3 are schematic structural views of the pump body;

the notation in the figure is:

1-pump body, 2-open impeller, 3-sealing gasket, 4-pump cover, 5-pump shaft, 6-mechanical seal, 601-circulating liquid inlet, 602-circulating liquid outlet, 7-connecting frame, 8-driving motor, 9-base, 10-buffer liquid cooler, 101-cooling pipe, 102-cooling liquid inlet, 103-cooling liquid outlet, 104-liquid discharging port, 105-buffer liquid discharging pipe, 106-buffer liquid returning pipe, 1001-liquid discharging flow passage, 1002-liquid discharging flow passage, 1003-adjusting rod, 1004-driving rod and 1005-balancing rod.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The embodiment of the present invention is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example (b):

fig. 1 shows a gas-liquid mixture transfer vortex pump, which includes a pump cavity mechanism, a driving mechanism, and a mechanical seal cooling mechanism. The pump cavity mechanism comprises a pump body 1 and a pump cover 4 which are mutually encircled to form a pump cavity, an open impeller 2 arranged in the pump cavity, and a liquid inlet flow channel 1002 and a liquid outlet flow channel 1001 which are adjacently arranged on the pump body 1; the driving mechanism comprises a pump shaft 5, a driving motor 8 and a mechanical seal 6, wherein one end of the pump shaft 5 is connected with the open impeller 2, and the other end of the pump shaft extends out of the pump cover 4; the mechanical seal 6 is specifically a cartridge type double-end-face mechanical seal; the mechanical seal cooling mechanism comprises a circulating liquid inlet 601 and a circulating liquid outlet 602 which are arranged on the mechanical seal 6 and communicated with the interior of the mechanical seal 6, and a buffer liquid cooler 10 communicated with the circulating liquid inlet 601 and the circulating liquid outlet 602.

The pump shaft 5 is specifically a motor extension shaft, the buffer liquid cooler 10 is provided with a buffer liquid outlet pipe 105 and a buffer liquid return pipe 106, the buffer liquid cooler 10 is communicated with the circulation liquid inlet 601 through the buffer liquid outlet pipe 105, and is communicated with the circulation liquid outlet 602 through the buffer liquid return pipe 106.

In this embodiment, through regard as the shaft seal subassembly with collection dress formula double mechanical seal, guarantee better rotary seal effect, the rethread is with buffer solution cooler 10 and collection dress formula double mechanical seal circulation intercommunication to and the heat that produces in the high-speed rotational friction in-process of pump shaft 5 and collection dress formula double mechanical seal is taken away in time, in order to avoid mechanical seal high temperature wear, guarantee its steady operation.

In some preferred embodiments, buffer cooler 10 includes a cooler housing having a cavity therein, a cooling fluid inlet 102 and a cooling fluid outlet 103 in communication with the cavity, and a cooling tube 101 disposed within the cavity, the cooling tube 101 in communication with a buffer fluid outlet 105 and a buffer fluid return 106. In addition, a liquid discharging port 104 is also arranged on the side wall of the lower end of the cooler shell.

In some preferred embodiments, the cooling tube 101 is helically disposed to increase the contact time of the cooling fluid in the cooling tube 101 to substantially cool the cooling fluid.

In some preferred embodiments, a sealing gasket 3 is further arranged between the pump body 1 and the pump cover 4.

In some preferred embodiments, a coupling frame 7 is further provided between the pump cover 4 and the driving motor 8.

In some preferred embodiments, the vortex pump further comprises a self-balancing mechanism, as shown in fig. 2 to 3, the self-balancing mechanism comprises a connecting through hole respectively penetrating through the inner side wall of the liquid inlet flow channel 1002 and the inner side wall of the liquid outlet flow channel 1001, and a balancing rod 1005 with two ends respectively sliding in the connecting through hole in a sealing manner; two ends of a balancing rod 1005 are respectively arranged in the liquid inlet flow channel 1002 and the liquid outlet flow channel 1001, and the working pressure in the pump body 1 is enabled to realize self balance by adjusting the volume of the balancing rod 1005 respectively extending into the liquid inlet flow channel 1002 and the liquid outlet flow channel 1001.

Preferably, the adjusting rod 1003 is screw-sealed with the adjusting hole, and the adjusting rod 1003 can move back and forth in the adjusting hole. The balance rod 1005 is in clearance sealing fit with the connecting through hole, so that the sealing effect between the liquid inlet flow channel 1002 and the liquid outlet flow channel 1001 is ensured, and the back-and-forth movement of the balance rod 1005 in the connecting through hole is not influenced.

In some preferred embodiments, an adjusting hole is formed through the outer side wall of the liquid outlet flow channel 1001, an adjusting rod 1003 is arranged in the adjusting hole in a sealing and sliding manner, one end of the adjusting rod 1003 is in transmission connection with a balancing rod 1005, and the other end of the adjusting rod 1003 extends out of the adjusting hole.

In some preferred embodiments, the adjusting rod 1003 and the balancing rod 1005 are connected through a driving rod 1004 disposed in the liquid outlet flow channel 1001.

In some preferred embodiments, a compression spring is used in place of the drive link 1004.

In some preferred embodiments, to ensure stable operation of the pump, the vortex pump further comprises a base 9.

The working principle is as follows: in the gas-liquid mixed delivery vortex pump in the embodiment, the open impeller 2 installed on the pump shaft 5 is driven to rotate by the rotation of the driving motor 8, the open impeller 2 has an open structure with multiple blades, and an inlet and an outlet on the pump body 1 are not directly communicated with a flow channel on the pump cover 4. When a medium containing gas is conveyed into the pump body 1, the open impeller 2 rotates, liquid among blades of the open impeller 2 generates pressure through centrifugal force, and after the pressure is gradually increased, the gas in the medium is compressed, so that the volume is reduced. Meanwhile, the volume of the liquid is increased, the average speed of the liquid in the flow channel of the pump cover 4 is reduced, the longitudinal vortex is enhanced, and the gas is continuously compressed until the gas is discharged out of the outlet of the pump body 1.

When the conveying medium has particles, the particles enter the open impeller 2 and the pump cover 4 flow channel through the inlet of the pump body 1, and are pressurized and discharged to the outlet of the pump body through the blades of the open impeller 2. Because of selecting for use the bearing seal to be cartridge-type double mechanical seal, use pure buffer solution to get into circulation inlet 601 through the buffer solution drain pipe 105 of buffer tank, then flow back to buffer solution liquid return pipe 106 through circulation liquid outlet 602, then cool off circulating buffer solution through coolant liquid import 102 and coolant liquid export 103, ensure that mechanical seal does not heat up. The used medium contains particles or gas, and the mechanical seal cannot be abraded, so that the service life and the use range of the pump are prolonged.

A connecting through hole which is communicated with each other is further arranged between the liquid inlet flow channel 1002 and the liquid outlet flow channel 1001, a balance rod 1005 which can move back and forth along the connecting through hole is arranged in the connecting through hole, two ends of the balance rod 1005 are respectively arranged in the liquid inlet flow channel 1002 and the liquid outlet flow channel 1001, and the balance of the working pressure in the pump body 1 is realized by adjusting the volume of the balance rod 1005 which respectively extends into the liquid inlet flow channel 1002 and the liquid outlet flow channel 1001.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. A peripheral pump, comprising:

the pump cavity mechanism comprises a pump body (1) and a pump cover (4) which are mutually encircled to form a pump cavity, an open impeller (2) arranged in the pump cavity, and a liquid inlet flow channel (1002) and a liquid outlet flow channel (1001) which are adjacently arranged on the pump body (1);

the driving mechanism comprises a pump shaft (5) with one end connected with the open impeller (2) and the other end extending out of the pump cover (4), a driving motor (8) in transmission connection with the extending end of the pump shaft (5), and a mechanical seal (6) arranged between the pump cover (4) and the pump shaft (5); the mechanical seal (6) is a cartridge type double-end-face mechanical seal; and

the mechanical seal cooling mechanism comprises a circulating liquid inlet (601), a circulating liquid outlet (602) and a buffer liquid cooler (10), wherein the circulating liquid inlet (601) and the circulating liquid outlet (602) are arranged on the mechanical seal (6) and are communicated with the interior of the mechanical seal (6), and the buffer liquid cooler (10) is communicated with the circulating liquid inlet (601) and the circulating liquid outlet (602).

2. A peripheral pump according to claim 1, wherein the buffer liquid cooler (10) is provided with a buffer liquid outlet pipe (105) and a buffer liquid return pipe (106), and

the buffer solution cooler (10) is communicated with the circulating liquid inlet (601) through a buffer solution outlet pipe (105) and is communicated with the circulating liquid outlet (602) through a buffer solution liquid return pipe (106).

3. Peripheral pump in accordance with claim 2, characterized in that the buffer cooler (10) comprises a cooler housing with a cavity inside, a cooling fluid inlet (102) and a cooling fluid outlet (103) communicating with the cavity, and a cooling tube (101) arranged in the cavity,

the cooling pipe (101) is communicated with the buffer solution outlet pipe (105) and the buffer solution return pipe (106).

4. A peripheral pump according to claim 3, wherein the cooling tube (101) is helically arranged.

5. The vortex pump according to claim 1, further comprising a self-balancing mechanism, wherein the self-balancing mechanism comprises a connecting through hole respectively formed in the inner side wall of the liquid inlet flow channel (1002) and the inner side wall of the liquid outlet flow channel (1001), and a balancing rod (1005) with two ends respectively sliding in the connecting through hole in a sealing manner;

two ends of the balance rod (1005) are respectively arranged in the liquid inlet flow channel (1002) and the liquid outlet flow channel (1001), and the balance of the working pressure in the pump body (1) is realized by adjusting the volume of the balance rod (1005) which respectively extends into the liquid inlet flow channel (1002) and the liquid outlet flow channel (1001).

6. The peripheral pump as claimed in claim 5, wherein an adjusting hole is formed through an outer side wall of the liquid outlet channel (1001), an adjusting rod (1003) is arranged in the adjusting hole in a sealing and sliding manner, one end of the adjusting rod (1003) is in transmission connection with the balancing rod (1005), and the other end of the adjusting rod extends out of the adjusting hole.

7. Vortex pump according to claim 6, characterised in that the adjustment rod (1003) is connected to the balancing rod (1005) by a driving rod (1004) arranged in the outlet flow channel (1001).

8. Vortex pump according to claim 6, characterised in that the adjustment rod (1003) is connected to the balancing rod (1005) by means of a resilient member arranged in the outlet channel (1001).

9. A peripheral pump in accordance with claim 8, wherein the resilient member is a compression spring.

10. A vortex pump according to claim 1 further comprising a base (9).