CN111197579B

CN111197579B - Anti-burst vertical pump

Info

Publication number: CN111197579B
Application number: CN202010149556.2A
Authority: CN
Inventors: 黄丁财
Original assignee: Zi Yi Electrical Engineering Co Ltd
Current assignee: Zi Yi Electrical Engineering Co Ltd
Priority date: 2020-03-06
Filing date: 2020-03-06
Publication date: 2021-02-02
Anticipated expiration: 2040-03-06
Also published as: CN111197579A

Abstract

An anti-burst vertical pump comprises a power unit, a shell seat unit and a sealing cover, wherein the power unit comprises a motor body, a rotating shaft and an impeller fixedly arranged on the rotating shaft. The shell seat unit comprises a barrel part connected to the motor body and a water drawing seat connected to the barrel part, the water drawing seat is provided with an inner circumferential surface, an outer circumferential surface and an end surface, the inner circumferential surface is provided with internal threads, the sealing cover is fixedly arranged on the water drawing seat and comprises an inner convex seat screwed in the internal threads, an outer annular wall surrounding the outer part of the inner convex seat and an end wall intersected and connected between the inner convex seat and the outer annular wall, the outer annular wall is airtight and bound to the outer part of the outer circumferential surface, and the end wall is abutted to the end surface. The anti-burst purpose can be achieved by utilizing the design of the sealing cover.

Description

Anti-burst vertical pump

Technical Field

The present invention relates to a pump for transporting fluids, and in particular to a burst-proof vertical pump for pumping chemical liquids.

Background

A conventional vertical pump (prior art of taiwan patent No. TWM 354003) includes a body, a base fixed to the top of the body, an impeller axially disposed inside the body, a motor fixed to the base and configured to drive the impeller to rotate, an upper cover sleeved inside the body, and a C-shaped snap ring fastened to the body and configured to axially position the upper cover with respect to the body.

When the impeller is installed and positioned in an inner hole of the body, the upper cover is sleeved in the inner hole and positioned at the bottom of the impeller, and the C-shaped retaining ring is embedded in a ring groove of the body, so that the upper cover can be positioned relative to the suction port end at the bottom of the body.

When the vertical pump pumps liquid, the impeller is utilized to throw the liquid out, and the liquid is in high temperature under the output high pressure and the contact high temperature, so that the condition that the suction end at the bottom of the body is expanded outwards and in a horn shape is generated, the longer the vertical pump is used, the more serious the deformation condition of the peripheral wall of the suction end at the bottom of the body is, and when the operation horsepower of the motor is improved or the pumping flow is improved, the upper cover is easily exploded from the suction end, so that the vertical pump is damaged and cannot be used.

Disclosure of Invention

The invention aims to provide an anti-burst vertical pump which can solve the defects of the existing vertical pump.

The invention discloses an anti-burst vertical pump, which comprises a power unit, a shell seat unit and a sealing cover, wherein the power unit comprises a motor body, a rotating shaft driven by the motor body and extending along an axis, and an impeller fixedly arranged on the rotating shaft, the shell seat unit comprises a hollow cylindrical barrel piece connected with the motor body, and a water drawing seat opposite to the motor body and connected with the barrel piece, the barrel piece is provided with a containing chamber through which the rotating shaft penetrates, the water drawing seat is provided with an inner circumferential surface capable of defining a water drawing chamber communicated with the containing chamber, an outer circumferential surface opposite to the inner circumferential surface, and an end surface intersected and connected between the inner circumferential surface and the outer circumferential surface, the impeller is arranged in the water drawing chamber, the inner circumferential surface is provided with internal threads, and the sealing cover is fixedly arranged on the water drawing seat of the shell seat unit and comprises an inner convex seat screwed in the water drawing chamber, The inner convex seat is provided with an outer ring wall which is arranged around the outer part of the inner convex seat, and an end wall which is connected between the inner convex seat and the outer ring wall in an intersecting manner, the inner convex seat, the outer ring wall and the end wall jointly define a groove for the water sucking seat to be sleeved in, the inner convex seat is provided with an outer ring surface which is adjacent to the groove, an external thread which is arranged on the outer ring surface and screwed in the internal thread, the outer ring wall is airtight and bound on the outer part of the outer peripheral surface, and the end wall is abutted against the end surface.

According to the anti-burst vertical pump, the outer peripheral surface of the water drawing seat of the shell seat unit is provided with the first annular groove, and the anti-burst vertical pump further comprises the first anti-leakage ring which is arranged in the first annular groove and used for the airtight abutting of the outer annular wall.

The anti-burst vertical pump of the invention is characterized in that the end surface of the water sucking seat of the shell seat unit is provided with a second annular groove, and the anti-burst vertical pump also comprises a second anti-leakage ring which is arranged in the second annular groove and is used for the airtight abutting of the end wall.

The anti-burst vertical pump of the invention is characterized in that the inner convex seat of the sealing cover is also provided with a top plane, a bottom plane opposite to the top plane, a plurality of sunken parts which are concavely arranged on the bottom plane, and a plurality of reinforcing ribs which are respectively formed between two adjacent sunken parts.

The invention has the beneficial effects that: by utilizing the function that the inner convex seat of the sealing cover is screwed in the water drawing chamber and the outer ring wall is arranged around the outside of the water drawing seat, even if the operation horsepower of the motor body is improved or the pumping flow is improved, the outer ring wall is bound on the outside of the outer peripheral surface, the outward expansion deformation of the water drawing seat can be prevented, the sealing cover can be prevented from bursting from the water drawing chamber, and the service life of the vertical pump can be prolonged.

Drawings

FIG. 1 is an assembled cross-sectional view of an embodiment of the burst resistant vertical pump of the present invention;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

fig. 3 is a perspective combined bottom view of the embodiment.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1 and 2, the burst-proof vertical pump of the present invention comprises a power unit 10, a housing unit 20, a cover 30, a first leakage-proof ring 40 and a second leakage-proof ring 50.

The power unit 10 includes a mounting base 11, a motor body 12 fixed to the mounting base 11, a rotating shaft 13 driven by the motor body 12 and extending along an axis L, and an impeller 14 opposite to the motor body 12 and fixed at a distal end of the rotating shaft 13.

The housing unit 20 includes a hollow cylindrical member 21 connected to the motor body 12 through the mounting seat 11, a water drawing seat 22 opposite to the motor body 12 and integrally formed and connected to the cylindrical member 21, and a discharge pipe 23 connected to the water drawing seat 22. The cylinder 21 has a chamber 211 through which the shaft 13 passes, the pumping seat 22 has an inner circumferential surface 222 defining a pumping chamber 221 communicating with the chamber 211, an outer circumferential surface 223 opposite to the inner circumferential surface 222, and an end surface 224 intersecting between the inner circumferential surface 222 and the outer circumferential surface 223, the impeller 14 is disposed in the pumping chamber 221, and the inner circumferential surface 222 has an internal thread 225. The outer peripheral surface 223 has a first annular groove 226 and the end surface 224 has a second annular groove 227. The discharge pipe 23 is connected to the pumping chamber 221.

The sealing cover 30 is made of engineering plastic, and in this embodiment, the sealing cover 30 may be made of engineering plastic material with acid-base resistance, such as PP, GFRPP (glass fiber reinforced polypropylene), pvdf (polyvinylidene fluoride), cftfe (carbon fiber reinforced ethylene-tetrafluoroethylene), etc., and the sealing cover 30 is fixed on the water suction seat 22 of the housing unit 20, and includes an inner boss 31 screwed into the water suction chamber 221, an outer annular wall 32 surrounding the inner boss 31, and an end wall 33 connected between the inner boss 31 and the outer annular wall 32 in an intersecting manner, the inner boss 31, the outer annular wall 32, and the end wall 33 together define a groove 34 for the water suction seat 22 to be screwed into, the inner boss 31 has an outer annular surface 311 adjacent to the groove 34, an outer annular surface 311 arranged on the outer annular surface, and an inner thread 312 screwed into the outer annular wall 225, and an outer thread 313 arranged along the axis L of the suction inlet, the outer annular wall 32 is hermetically sealed and bound to the outside of the outer peripheral surface 223, and the end wall 33 is hermetically abutted against the end surface 224. Referring to fig. 3, the inner boss 31 further has a top plane 314, a bottom plane 315 opposite to the top plane 314, a plurality of recessed portions 316 recessed from the bottom plane 315, and a plurality of reinforcing ribs 317 each formed between two adjacent recessed portions 316.

The first anti-leakage ring 40 is installed in the first annular groove 226 and is air-tightly abutted by the outer annular wall 32.

The second anti-leakage ring 50 is installed in the second ring groove 227 and is airtightly abutted by the end wall 33.

For a further understanding of the invention, its role, the technical means employed, and the efficacy attained by its cooperation, it is believed that the invention will be more fully and specifically understood from the following description.

As shown in fig. 1 and 2, when the anti-burst vertical pump of the present invention is assembled, the power unit 10 is firmly combined with the housing unit 20, and the impeller 14 is also fixed on the rotating shaft 13 and located in the pumping chamber 221. The sealing cover 30 is screwed to the internal thread 225 by the external thread 312, so as to be firmly combined with the water-drawing seat 22.

When the motor body 12 of the power unit 10 is started and drives the rotating shaft 13 and the impeller 14 to rotate, the impeller 14 is utilized to throw the chemical liquid introduced through the suction port 313 out of the discharge pipe 23, and the purpose of pumping the chemical liquid is achieved.

When pumping chemical liquid, the inner convex seat 31 of the sealing cover 30 is screwed in the water drawing chamber 221, and the outer annular wall 32 surrounds the outside of the water drawing seat 22, so that even if the operation horsepower of the motor body 12 is improved or the pumping flow rate is improved, the outer annular wall 32 is bound to the outside of the outer peripheral surface 223, the peripheral wall of the water drawing seat 22 can be prevented from expanding and deforming outwards, the sealing cover 30 can be prevented from bursting open from the opening end of the water drawing chamber 221, and the service life of the vertical pump can be prolonged.

Therefore, the cover 30 of the present invention has a U-shaped cross-section structure formed by the inner boss 31, the outer annular wall 32 and the end wall 33, and can effectively generate a tensile force when the vertical pump is at a high pressure and a high temperature, thereby preventing the housing unit 20 of the vertical pump from being deformed.

Furthermore, by the first anti-leakage component 40 disposed in the first ring groove 226 and the outer annular wall 32 being in airtight contact with each other, and the second anti-leakage ring 50 disposed in the second ring groove 227 and the end wall 33 being in airtight contact with each other, a multi-leakage-proof effect can be achieved. Even though the peripheral wall of the water scooping seat 22 may be expanded and deformed, the water tightness is better by the arrangement of the first leakage-proof member 40.

In addition, the cover 30 is provided with the depressed portion 316 to reduce the weight, and the reinforcing rib 317 can reinforce the structural strength of the inner boss 31 and effectively prevent the inner boss 31 from being deformed.

In summary, the anti-burst vertical pump of the present invention has a simple structure, is easy to manufacture and assemble, and can effectively prevent the housing unit from burst, thereby achieving the objective of the present invention.

Claims

1. The utility model provides an anti-burst vertical pump, contains power pack, shell seat unit, closing cap and first leak protection ring, its characterized in that:

the power unit comprises a motor body, a rotating shaft driven by the motor body and extending along the axis, and an impeller fixedly arranged on the rotating shaft;

the shell seat unit comprises a hollow cylindrical barrel piece connected to the motor body and a water drawing seat opposite to the motor body and connected to the barrel piece, the barrel piece is provided with a containing chamber through which the rotating shaft penetrates, the water drawing seat is provided with an inner circumferential surface capable of defining a water drawing chamber communicated with the containing chamber, an outer circumferential surface opposite to the inner circumferential surface and an end surface connected between the inner circumferential surface and the outer circumferential surface in an intersecting manner, the outer circumferential surface is provided with a first annular groove, the impeller is arranged in the water drawing chamber, and the inner circumferential surface is provided with internal threads;

the sealing cover is fixedly arranged on the water drawing seat of the shell seat unit and comprises an inner convex seat screwed in the water drawing chamber, an outer annular wall surrounding the outer part of the inner convex seat and an end wall connected between the inner convex seat and the outer annular wall in an intersecting manner, the inner convex seat, the outer annular wall and the end wall jointly define a groove for the water drawing seat to be sleeved in, the inner convex seat is provided with an outer annular surface adjacent to the groove, an outer thread arranged on the outer annular surface and screwed in the inner thread, a top plane, a bottom plane opposite to the top plane, a plurality of sunken parts concavely arranged by the bottom plane and a plurality of reinforcing ribs respectively formed between the two adjacent sunken parts, the outer annular wall is airtight and bound outside the outer peripheral surface, and the end wall is abutted against the end surface;

the first leakage-proof ring is arranged in the first ring groove and is used for the airtight abutting of the outer ring wall.

2. The burst-resistant vertical pump of claim 1, wherein: the end face of the water sucking seat of the shell seat unit is provided with a second annular groove, and the anti-burst vertical pump further comprises a second leakage-proof ring which is arranged in the second annular groove and used for the airtight abutting of the end wall.