CN201897073U

CN201897073U - Oil spill prevention exhaust device of lubricating oil tank of centrifugal pump

Info

Publication number: CN201897073U
Application number: CN2010206041572U
Authority: CN
Inventors: 张联; 王义仕
Original assignee: KUNMING CELLULOSE FIBERS CO Ltd
Current assignee: KUNMING CELLULOSE FIBERS CO Ltd
Priority date: 2010-11-12
Filing date: 2010-11-12
Publication date: 2011-07-13
Anticipated expiration: 2020-11-12

Abstract

The utility model discloses an oil spill prevention exhaust device of a lubricating oil tank of a centrifugal pump. The oil spill prevention exhaust device comprises a spill valve (2) and a rain cover (3), wherein a core shaft at an upper end of the spill valve (2) is in coaxial stationary fit with the bottom of the rain cover (3), so that an air flow passage is formed between the spill valve (2) and the rain cover (3); an isolating convex shoulder is arranged at the upper part of the spill valve (2), an air outlet (6) is formed at the top of the convex shoulder, an air inlet (5) is formed at the bottom of the convex shoulder, and the air inlet (5) and the air outlet (6) are communicated in the spill valve (2); and the spill valve (2) is in stationary fit with an oil return base (1) through the convex shoulder of the spill valve, and a pump body connector (4) is arranged at a lower end of the oil return base (1). By adopting the design of the spill valve and the oil return base, the air bubbles accompanied with lubricating oil and sprayed out the pump body are broken by the spill valve, and the lubricating oil is blocked to backflow into the lubricating oil tank along the inner wall of the oil return base, thereby ensuring that the lubricating oil is reduced or prevented from being brought out of the pump body by the exhaust device, and therefore the lubricating state is avoided from deteriorating, and the working environment of the centrifugal pump is prevented from being polluted.

Description

A kind of centrifugal pump lubricating oil tank preventing oil spill venting gas appliance

Technical field

The utility model belongs to the centrifugal pumping apparatus technical field, is specifically related to a kind of centrifugal pump lubricating oil tank preventing oil spill venting gas appliance.

Background technique

The centrifugal pump fuel tank of prior art, because design reasons, in use lubricant oil can overflow with air-flow from exhaust port, not only wastes oil plant, and can cause environmental pollution.Leakage of oil also causes lack of lubrication, has a strong impact on the working life of pump.Its reason is: pump runs up in the using process, spatter oily device and also oil is splashed on bearing and the casing, be lubricated and cool off, and in this process, also just produce gas in the casing in high speed rotating, oil is because of there being certain viscosity, and spume, after operation a period of time, the oil temperature rises naturally, produce pressure in the casing, when pressure reached a definite value, because the effect that is stressed, gas will bring out oil from the exhaust port of the about 2mm of diameter.For this reason, the design people has developed a kind of lubricating oil tank preventing oil spill venting gas appliance through great deal of experimental, evidence, and effect is good.

The model utility content

It is a kind of simple in structure that the purpose of this utility model is to provide, stable and reliable operation centrifugal pump lubricating oil tank preventing oil spill venting gas appliance.

The purpose of this utility model is to realize like this, comprise relief valve and rain cover, described relief valve upper end mandrel and the rain cover coaxial stationary fit in bottom, make between relief valve and the rain cover and form air-flow path, relief valve top is provided with the isolation convex shoulder, and the convex shoulder top sets out pore, the convex shoulder below is provided with inlet hole, inlet hole and air outlet hole are in the relief valve internal communication, and described relief valve is by its convex shoulder and the stationary fit of oil return pedestal, and oil return pedestal lower end is provided with pump housing connecting head.

Relief valve of the present utility model and oil return foundation design, make the bubble that from the pump housing, is sprayed be entrained with lubricant oil, because of breaking up bubble, relief valve intercepted, and be back in the lubricating oil tank along the oil return base internal wall, guaranteed that venting gas appliance reduces or no longer lubricant oil is entrained with outside the pump housing, both avoid the deterioration of lubricating status, prevented the pollution of centrifugal pump working environment again.

Description of drawings

Fig. 1 is the exhaust seat overall structure cross-sectional schematic of prior art;

Fig. 2 is the utility model overall structure cross-sectional schematic.

Among the figure: 1-oil return pedestal, 2-relief valve, 3-rain cover, 4-connecting head, 5-inlet hole, 6-air outlet hole, 7-oil baffle.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described, but never in any form the utility model is limited, any conversion based on the utility model training centre is done all falls into protection domain of the present utility model.

As shown in Figure 1, the structure of the exhaust seat of prior art is an overall structure, and top is windshield 3, and the middle part is a pedestal, and the pedestal middle part is a threaded connector 4, and the connecting head top sets out pore 6, and the below is provided with inlet hole 5, and the pedestal bottom is provided with oil baffle 7.Because inlet hole 5 and oil baffle 7 all work in lubricating oil tank portion, can't intercept lubricant oil fully and not enter inlet hole 5, oil droplet inevitably can be external by air outlet hole 6 jet pumps.Both consume lubricant oil, polluted environment again.

As shown in Figure 2, the utility model comprises relief valve 2 and rain cover 3, described relief valve 2 upper end mandrels and the coaxial stationary fit in rain cover 3 bottoms, make between relief valve 2 and the rain cover 3 and form air-flow path, relief valve 2 tops are provided with the isolation convex shoulder, and the convex shoulder top sets out pore 6, the convex shoulder below is provided with inlet hole 5, inlet hole 5 and air outlet hole 6 are in relief valve 2 internal communication, and described relief valve 2 is by its convex shoulder and 1 stationary fit of oil return pedestal, and oil return pedestal 1 lower end is provided with pump housing connecting head 4.

The spool lower end of described relief valve 2 is circular arc, can break up the bubble that comes from the pump housing, and the lubricated oil droplet of carrying secretly is intercepted.

Working principle of the present utility model:

The utility model rain cover design, even make pump be in the open, even also can proper functioning under the wind and rain working environment, rainwater all can not enter fuel tank.Relief valve has retaining oil, exhaust and adjusting triple functions, and when the oil in the fuel tank went out with air-flow, the oil that goes out with air-flow was foamed, its spool that comes out at first to run into, bubble-break forms oil droplet, splash into the oil return pedestal after taking care of the pence, air-flow is by discharging in the hole on the spool.The oil return pedestal plays the effect of pedestal and air scoop, and it is contained on the fuel tank by the screw thread on the joint, and the oil that overflows is kept off the back and collected by it, and flows back in the fuel tank again by deadweight.

Claims

1. centrifugal pump lubricating oil tank preventing oil spill venting gas appliance, comprise relief valve (2) and rain cover (3), it is characterized in that: described relief valve (2) upper end mandrel and rain cover (3) the coaxial stationary fit in bottom, make between relief valve (2) and the rain cover (3) and form air-flow path, relief valve (2) top is provided with the isolation convex shoulder, the convex shoulder top sets out pore (6), the convex shoulder below is provided with inlet hole (5), inlet hole (5) and air outlet hole (6) are in relief valve (2) internal communication, described relief valve (2) is by its convex shoulder and oil return pedestal (1) stationary fit, and oil return pedestal (1) lower end is provided with pump housing connecting head (4).

2. centrifugal pump lubricating oil tank preventing oil spill venting gas appliance as claimed in claim 1, it is characterized in that: the spool lower end of described relief valve (2) is circular arc.