CN202165283U

CN202165283U - Vacuum pump

Info

Publication number: CN202165283U
Application number: CN201120274260XU
Authority: CN
Inventors: 范良福; 范天宁
Original assignee: WUHAN DABENG ENVIRONMENTAL PROTECTION PRODUCT Co Ltd
Current assignee: WUHAN DABENG ENVIRONMENTAL PROTECTION PRODUCT Co Ltd
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2012-03-14
Anticipated expiration: 2021-07-29

Abstract

The utility model belongs to the field of a vacuum pump and discloses a gas vacuum pump which is used for pumping wet chlorine gas and oxidant which do not contain solid particles and are insoluble or slightly soluble in working solution. The gas vacuum pump comprises a pump body, wherein an air inlet and an air outlet are arranged above the pump body, a flexible valve plate capable of automatically adjusting the exhausting angle is arranged at the air outlet, a shaft is arranged in the pump body in a decentered manner, impellers are arranged on the shaft, the impellers are arranged in a classification manner and are made from industrial pure titanium, the joints of the two ends of the shaft and the pump body are in mechanical seal, and two groups of bearings are arranged at the joints of the two ends of the shaft and the pump body and are respectively arranged in the axial direction and the radial direction of the shaft; and an automatic water inlet and discharge valve is also arranged on the pump body, and an industrial pure titanium heat exchanger is arranged at the automatic water inlet and discharge valve. The utility model aims at providing the vacuum pump which operates reliably, has low maintenance cost, saves resources, is environmentally-friendly and has wide application range.

Description

A kind of vacuum pump

Technical field

The utility model relates to field of vacuum, relates in particular to a kind ofly to be used for suction and not contain solid particle, and is insoluble or be slightly soluble in the wet chlorine body of working solution, the gas vacuum of Oxidant.

Background technique

At present on the market vacuum pump structure is complicated, and in the long-term operation, the axle in the pump housing is easy to produce fault, and maintenance cost is high, and water can not recycle simultaneously, not only loss water resources, and also can pollute environment; Wherein receive the restriction of flow passage components material in the pump housing, using scope is little.

Summary of the invention

[0003]In order to solve the problems of the technologies described above, the purpose of the utility model be to provide a kind of turn round reliable, maintenance cost is low, economize on resources, environmental protection, vacuum pump that using scope is wide.

The complete skill scheme of the utility model is that a kind of vacuum pump comprises a pump housing, is provided with a suction port and air outlet above the said pump housing; Eccentricly in the said pump housing be provided with an axle, said axle is provided with impeller, two ends and the mechanical seal of pump housing joint of said axle, the two ends and the pump housing joint of said axle are provided with two groups of bearings, be separately positioned on spool axially and radially; The said pump housing is connected on the work unit, and the said pump housing is provided with automatic water-inflow and drain valve with work unit joint, and said automatic water-inflow and drain valve place is provided with the industrially pure titanium heat exchanger; Said impeller is the industrially pure titanium impeller.

Place, said air outlet is provided with the flexible valve plate that can regulate the exhaust angle automatically.

Said impeller is a classifying turbine.

Therefore the utility model has following beneficial effect:

The utility model is generally used for suction and does not contain solid particle, and the insoluble or wet chlorine body of slightly soluble and working solution, the gas of Oxidant are simple in structure; Easy to maintenance; Flexible valve plate is equipped with at the place of giving vent to anger, and can regulate the exhaust angle automatically, makes pump efficient operation under different suction conditions; Be furnished with automatic water-inflow and drain valve, its core ball float adopts nonmetallic material to make, and the startup liquid level of control pump avoids overload to start; The axle envelope adopts double mechanical seal, and the protection axle sleeve is equipped with in axle envelope position, guarantees not leaking outside of corrosivity working solution, compliance with environmental protection requirements; Pump axially and radial load respectively by two groups of different bearings burdens, improved bearing structure has guaranteed that pump can reliably turn round for a long time continuously; When mixing the industrially pure titanium heat exchanger, can realize that working solution recycles, reduce the loss and the environmental pollution of water.Through the self-absorption function of vacuum pump, the working solution that is cooled is introduced in the pump, need not establish supercharging device in addition; The impeller end face adopts grading design, has reduced the susceptibility of pump to dust in the medium and water quality fouling.

Description of drawings

Accompanying drawing described herein is used to provide the further understanding to the utility model, constitutes the application's a part, does not constitute the improper qualification to the utility model, in the accompanying drawings:

Fig. 1 is the theory structure schematic representation of the utility model;

Fig. 2 is the transverse cross sectional figure of the utility model.

Embodiment

To combine accompanying drawing and specific embodiment to specify the utility model below, be used for explaining the utility model in the illustrative examples and the explanation of this utility model, but not as the qualification to the utility model.

Embodiment 1:

A kind of vacuum pump of present embodiment comprises a pump housing 1, and pump housing top is provided with a suction port 2 and air outlet 3; 3 places, air outlet are provided with the flexible valve plate that can regulate the exhaust angle automatically, eccentricly in the pump housing 1 are provided with an axle 4, and axle 4 is provided with impeller 5; Impeller 5 is the classification setting, processes the two ends and the pump housing 1 joint mechanical seal of axle 4 with the industrially pure titanium material; Axle 4 two ends and the pump housing 1 joint also are provided with two groups of bearings, be separately positioned on spool axially and radially; The pump housing 1 is connected on the work unit, and the pump housing is provided with automatic water-inflow and drain valve with work unit joint, and the water-inflow and drain valve place is provided with the industrially pure titanium heat exchanger automatically; Impeller is the industrially pure titanium impeller.

Working principle is: impeller 5 is installed near in the circular pump housing 1 prejudicially; When impeller 5 rotations; Liquid receives action of centrifugal force, forms a shape and the approaching pendular ring that equates of the pump housing 1 similar thickness at the pump housing 1 inwall, and the crack is by liquid closed between impeller 5 end faces and the distributor; With the pendular ring that impeller rotates, form between a crescent moon starry sky between internal surface and impeller 5 wheel hubs.The cavity volume that impeller 5 seals in the rotary course of preceding half way around (this moment is through suction port) enlarges gradually.Gas is sucked by suction port 6, and in the rotary course of back half way around (this moment is through exhaust port), sealed volume is dwindled gradually, and the gas of original suction is compressed.When pressure reached atmospheric pressure, gas was discharged from exhaust port 7, accomplishes a pumping process.In order to keep constant water ring, in running, must in pump, supply water continuously.Because the compression of gas is an isothermal, so when compression and suction flammable explosive gas, be difficult for causing danger.Be suitable for and departments such as chemical industry, coal, light industry, metallurgy, oil, food.

The utility model has adopted perfect construction design and various manufactured materials.Guaranteed that pump can reliably continuously for a long time turn round; Reduced the maintenance cost of pump; The loss and the environmental pollution of water have been reduced; 1, adopts industrially pure titanium, can satisfy the requirement for anticorrosion of wet chlorine and oxidized mediator.2, when flow passage components adopt different corrosion resistant Ti alloys to make, can satisfy different corrosion protection requirements.Aspiration ranges is the widest, and the minimum suction pressure of single pump can reach 33mbar.The efficient aspiration ranges of recommending to use is 160-1013mbar, and aspiration rate is 1.3-20/2min.

Therefore the utility model is generally used for suction and does not contain solid particle, the insoluble or wet chlorine body of slightly soluble and working solution, the gas of Oxidant; Simple in structure, easy to maintenance, flexible valve plate is equipped with at the place of giving vent to anger; Can regulate the exhaust angle automatically, make pump efficient operation under different suction conditions; Be furnished with automatic water-inflow and drain valve, its core ball float adopts nonmetallic material to make, and the startup liquid level of control pump avoids overload to start; The axle envelope adopts double mechanical seal, and the protection axle sleeve is equipped with in axle envelope position, guarantees not leaking outside of corrosivity working solution, compliance with environmental protection requirements; Pump axially and radial load respectively by two groups of different bearings burdens, improved bearing structure has guaranteed that pump can reliably turn round for a long time continuously; When mixing the industrially pure titanium heat exchanger, can realize that working solution recycles, reduce the loss and the environmental pollution of water.Through the self-absorption function of vacuum pump, the working solution that is cooled is introduced in the pump, need not establish supercharging device in addition; The impeller end face adopts grading design, has reduced the susceptibility of pump to dust in the medium and water quality fouling.

More than technical scheme that the utility model embodiment is provided be described in detail; Used specific case herein principle and the embodiment of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.

Claims

1. a vacuum pump is characterized in that, comprises a pump housing, and said pump housing top is provided with a suction port and air outlet; Eccentricly in the said pump housing be provided with an axle, said axle is provided with impeller, two ends and the mechanical seal of pump housing joint of said axle, the two ends and the pump housing joint of said axle are provided with two groups of bearings, be separately positioned on spool axially and radially; The said pump housing is connected on the work unit, and the said pump housing is provided with automatic water-inflow and drain valve with work unit joint, and said automatic water-inflow and drain valve place is provided with the industrially pure titanium heat exchanger; Said impeller is the industrially pure titanium impeller.

2. a kind of vacuum pump according to claim 1 is characterized in that, place, said air outlet is provided with the flexible valve plate that can regulate the exhaust angle automatically.

3. a kind of vacuum pump according to claim 1 is characterized in that, said impeller is a classifying turbine.