CN210317909U

CN210317909U - Vertical cylindrical multistage pump shell

Info

Publication number: CN210317909U
Application number: CN201921064177.2U
Authority: CN
Inventors: 程茂胜; 李圣宁; 程伟超
Original assignee: ANHUI LINE ELECTRIC PUMP CO LTD
Current assignee: ANHUI LINE ELECTRIC PUMP CO LTD
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-04-14
Anticipated expiration: 2029-07-09

Abstract

The utility model discloses a multistage pump case of vertical tube-shape, which comprises a housin, the inside bottom of casing is provided with the room that absorbs water, and inside top middle part is provided with sealed chamber, one side in sealed chamber and one side of the room that absorbs water all link up and are provided with the balance pipe connector, just one side in sealed chamber and the room that absorbs water all is connected with the pipe joint, is connected with the off-load pipe between two pipe joint, the inside of casing is from last to being provided with a plurality of mounting hole down, and the diameter of a plurality of mounting hole increases from last to increasing in proper order down. Through set up balanced union coupling head in the inside of sealed chamber and room that absorbs water for can connect balanced pipe through balanced union coupling head between sealed chamber and the room that absorbs water, the inside water of room that absorbs water can carry the inside of sealed chamber after the pressurization. Can wash the cooling to the mechanical seal apparatus of sealed chamber and inside, can guarantee that mechanical seal apparatus is difficult for generating heat in use, can carry out work under the environment of high temperature, and have good sealing performance.

Description

Vertical cylindrical multistage pump shell

Technical Field

The utility model relates to a multistage pump case, concretely relates to multistage pump case of vertical tube-shape belongs to multistage pump application.

Background

The vertical cylindrical multi-stage pump is one of a plurality of water pumps and is commonly used in production and life. It can be used vertically, can adapt to different demands.

Chinese patent with application number 201610539653.6 discloses a novel vertical multistage pump, including pump body casing, install the pump shaft in the pump body casing, install a plurality of impellers on the pump shaft, be located the pump shaft at impeller top and install semi-containerized formula mechanical seal, its structure is: the mechanical seal shaft sleeve is provided with a clamping groove, and a movable ring is embedded in the clamping groove; the outer circumferential surface of the machine seal shaft sleeve on the movable ring is sleeved with a static ring seat, the bottom of the machine seal shaft sleeve is provided with a groove, a static ring is embedded in the groove in a tight fit manner, and the static ring is tightly attached to the friction surface of the movable ring; two steps are arranged on the outer circumferential surface of the static ring seat and respectively comprise a large step and a small step, and the large step is connected with the mechanical seal gland through a plurality of small springs. The pump shell, the guide vanes inside the pump shell and the interstage plates in the multistage pump are prone to errors when being installed, and the working efficiency is low.

The pump shell of the prior multistage pump still has certain defects in use. The existing pump shell is mostly cylindrical, the level distribution of the mounting hole inside is not obvious, and when the guide vanes and the interstage plates are mounted, errors are easy to occur, so that the using efficiency is low, and the normal work is influenced. And the water in the unloading cavity is difficult to discharge after entering the sealing cavity, the water pressure in the unloading cavity is high, and good pressure relief cannot be obtained. Instruments in the sealed cavity cannot be cooled, work in a high-temperature environment, and poor sealing is easy to occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multistage pump case of vertical tube-shape can solve the inside mounting hole level distribution of current pump case and is not obvious, and stator and interstage board make mistakes easily when the installation, lead to using inefficiency, influence normal work. And the water in the unloading cavity is difficult to discharge after entering the sealing cavity, the water pressure in the unloading cavity is high, and good pressure relief cannot be obtained. The instruments in the sealed cavity cannot be cooled, and the sealed cavity works in a high-temperature environment, so that the technical problem of poor sealing is easily caused.

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

the utility model provides a multistage pump case of vertical tube-shape, includes the casing, the inside bottom of casing is provided with the room that absorbs water, and inside top middle part is provided with sealed chamber, one side in sealed chamber and one side of the room that absorbs water all link up and are provided with the balance pipe connector, just one side in sealed chamber and the room that absorbs water all is connected with the pipe joint, is connected with the off-load pipe between two pipe joint, the inside of casing is from last to being provided with a plurality of mounting hole down, and the diameter of a plurality of mounting hole increases from last to down in proper order.

Preferably, an unloading cavity is arranged in the shell below the sealing cavity, and the unloading cavity and the sealing cavity are both arranged in a cylindrical shape.

Preferably, the mounting holes are in a step shape from top to bottom, and the unloading cavity, the sealing cavity, the mounting holes and the water suction chamber are all arranged concentrically.

Preferably, the upper end and the lower end of one side of the shell are respectively connected with a water outlet and a water inlet, and the outer ends of the water outlet and the water inlet are both connected with flanges.

Preferably, the inner end of the water outlet is communicated with the water suction chamber, and the inner end of the water inlet is communicated with the mounting hole at the upper part.

The utility model has the advantages that:

1. through set up balanced union coupling head in the inside of sealed chamber and room that absorbs water for can connect balanced pipe through balanced union coupling head between sealed chamber and the room that absorbs water, the inside water of room that absorbs water can carry the inside of sealed chamber after the pressurization. Can wash the cooling to the mechanical seal apparatus of sealed chamber and inside, can guarantee that mechanical seal apparatus is difficult for generating heat in use, can carry out work under the environment of high temperature, and have good sealing performance.

2. By connecting the unloading pipe between the sealed cavity and the water suction chamber, water in the unloading cavity leaks into the sealed cavity and then can flow back to the inside of the water suction chamber through the unloading pipe in work, and meanwhile, cooling water in the sealed cavity can flow back to the inside of the water suction chamber through the unloading pipe. The water in the sealed cavity can be discharged and recovered in time, the unloading cavity can be unloaded, and the water is not easy to damage in use.

3. The plurality of mounting holes are formed in the shell and are arranged in a stepped manner, so that the diameters of the mounting holes are different, and the guide vanes and the interstage plates outside the rotating shaft can be matched with the mounting holes. Each mounting hole corresponds to a group of guide vanes and the interstage plate, so that assembly is unique, errors are not prone to occurring in mounting, and mounting accuracy and convenience are improved.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

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

Fig. 2 is a side view of the housing of the present invention.

In the figure: 1. a housing; 2. a water suction chamber; 3. mounting holes; 4. an unloading cavity; 5. sealing the cavity; 6. an unloading pipe; 7. a water outlet; 8. a water inlet; 9. balance tube connector.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, a vertical cylindrical multistage pump casing comprises a casing 1, a water suction chamber 2 is arranged at the bottom end inside the casing 1, a sealing cavity 5 is arranged in the middle of the top end inside the casing, a balance pipe connector 9 is arranged on one side of the sealing cavity 5 and one side of the water suction chamber 2 in a penetrating manner, pipeline connectors are connected to the sealing cavity 5 and one side of the water suction chamber 2, an unloading pipe 6 is connected between the two pipeline connectors, a plurality of mounting holes 3 are arranged inside the casing 1 from top to bottom, and the diameters of the mounting holes 3 are sequentially increased from top to bottom.

As a technical optimization scheme of the utility model, the inside of casing 1 is provided with off-load chamber 4 in the below of sealed chamber 5, and off-load chamber 4 and sealed chamber 5 all are cylindrical setting, and off-load chamber 4 can carry out the off-load to the water of casing 1 inside, reduces inside water pressure, and protection casing 1 is not fragile.

As the utility model discloses a technical optimization scheme, a plurality of mounting hole 3 is the echelonment from last to being down, and off-load chamber 4, sealed chamber 5, mounting hole 3 and suction chamber 2 all are concentric setting, and concentric setting makes things convenient for the installation of pivot, and the normal water energy upflow rotates, and the resistance reduces.

As a technical optimization scheme of the utility model, the upper and lower both ends of 1 one side of casing are connected with delivery port 7 and water inlet 8 respectively, and delivery port 7 and water inlet 8's outer end all is connected with the flange, and delivery port 7 and water inlet 8 make things convenient for the entering and the discharge of water, the convenient and outside pipe connection of flange.

As a technical optimization scheme of the utility model, the inner and the suction chamber 2 through connection of delivery port 7, the inner and the mounting hole 3 through connection on upper portion of water inlet 8, water get into suction chamber 2's inside from water inlet 8, through mounting hole 3, the delivery port 7 from upper portion is outwards discharged at last.

The utility model discloses when using, with the vertical inside middle-end of installing at casing 1 of the pivot of the pump body, and the pivot runs through sealed chamber 5, off-load chamber 4 and mounting hole 3, and the bottom is rotated with casing 1's bottom and is connected. The impeller, the guide vane and the inter-stage plate outside the rotating shaft are installed inside the corresponding installation hole 3 according to the corresponding size. A balance pipe is arranged between the two balance pipe connectors 9. During operation, water enters the water suction chamber 2 from the water inlet 8, flows upwards under the driving of the rotating shaft, passes through the mounting holes 3 and is finally discharged outwards from the water outlet 7.

A part of water in the water suction chamber 2 enters the sealed cavity 5 through the balance pipe after being pressurized, and the internal instruments are cooled. The water leaked in the unloading cavity 4 enters the sealing cavity 5, and finally the water in the sealing cavity 5 flows back to the inside of the water suction chamber 2 from the unloading pipe 6.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a multistage pump case of vertical tube-shape, a serial communication port, includes casing (1), the inside bottom of casing (1) is provided with water suction chamber (2), and inside top middle part is provided with sealed chamber (5), one side of sealed chamber (5) and one side of water suction chamber (2) all link up and are provided with balance pipe connector (9), just one side of sealed chamber (5) and water suction chamber (2) all is connected with the pipe joint, is connected with off-load pipe (6) between two pipe joint, the inside of casing (1) is from last to being provided with a plurality of mounting hole (3) down, and the diameter of a plurality of mounting hole (3) increases from last to down in proper order.

2. The vertical cylindrical multistage pump casing according to claim 1, wherein the inside of the casing (1) is provided with an unloading chamber (4) below the seal chamber (5), and the unloading chamber (4) and the seal chamber (5) are both arranged in a cylindrical shape.

3. The vertical cylindrical multistage pump casing according to claim 1, wherein the plurality of mounting holes (3) are stepped from top to bottom, and the unloading chamber (4), the sealing chamber (5), the mounting holes (3) and the suction chamber (2) are concentrically arranged.

4. The vertical cylindrical multistage pump casing according to claim 1, wherein the upper and lower ends of one side of the casing (1) are respectively connected with a water outlet (7) and a water inlet (8), and the outer ends of the water outlet (7) and the water inlet (8) are connected with flanges.

5. The vertical cylindrical multistage pump casing according to claim 4, wherein the inner end of the water outlet (7) is connected with the water suction chamber (2) in a penetrating manner, and the inner end of the water inlet (8) is connected with the mounting hole (3) at the upper part in a penetrating manner.