CN202971359U

CN202971359U - Hydraulic oil tank with oil return system

Info

Publication number: CN202971359U
Application number: CN 201220680766
Authority: CN
Inventors: 楚善昌; 王保森; 张照奇; 彭攀攀; 戴广泰
Original assignee: STRONG CONSTRUCTION MACHINERY (JINING) CO Ltd
Current assignee: STRONG CONSTRUCTION MACHINERY (JINING) CO Ltd; Strong Construction Machinery Co Ltd
Priority date: 2012-12-08
Filing date: 2012-12-08
Publication date: 2013-06-05
Anticipated expiration: 2022-12-08

Abstract

The utility model discloses a hydraulic oil tank with an oil return system. The hydraulic oil tank with the oil return system comprises an oil tank body, an oil absorption filter, an oil return filter element, an oil return box and an oil return diffuser. The hydraulic oil tank with the oil return system is characterized in that the oil return filter element is arranged inside the oil return diffuser, fine holes are formed in the oil return diffuser and have effects that hydraulic oil becomes gentle and bubbles are not easy to produce after passing through the oil return diffuser, the upper portion of the oil return diffuser is connected with the oil return box, an opening in the lower portion of the oil return box is matched with an upper connector of the oil return filter element, a check ring and an oil return spring are arranged inside the oil return box and have an effect of preventing the hydraulic oil from returning to the hydraulic oil tank without passing through the oil return filter element, a cover plate is arranged at the upper portion of the oil return spring, a pressure sensor is arranged on the cover plate, a separating plate is arranged between the oil return diffuser and the oil absorption filter, and the bubbles are prevented from being produced in liquid oil in the process of operation of engineering machinery. The hydraulic oil tank with the oil return system has the advantages of effectively overcoming the technical problems of inconvenient replacement of the oil return filter element, the short service life and the easily produced bubbles when oil return is conducted on an excavator hydraulic system.

Description

A kind of hydraulic oil container with oil return system

Technical fieldThe utility model belongs to the hydraulic shovel technical field, is specifically related to a kind of hydraulic oil container with oil return system.

Background techniqueAt present, in the construction machinery hydraulic oil tank oil return system, fluid is directly got back to fuel tank through the oil return filter core, and the oil return filter core is placed in oil return box, and hydraulic oil enters filter core inside by oil return filter core outside in oil return box, enter fuel tank internal from the oil return filter core after filtering.When hydraulic oil flowed out from the oil return box oil outlet, speed was fast, impacted greatly, and hydraulic oil easily produces bubble, and bubble causes damage to hydraulic element, reduces simultaneously the working life of hydraulic oil.Depend on the turbidity test of the pollutant impurity effect fuel tank in the filter core outside when renew cartridge more, there is no handle during the oil return filter element replacing, change inconvenient.

Summary of the inventionThe purpose of this utility model is the technical problem that easy generation bubble when solving the prior art oil return, working life are short, change oil return filter core inconvenience, provides a kind of hydraulic oil container with oil return system, to overcome the deficiencies in the prior art.

A kind of hydraulic oil container with oil return system of the utility model, it comprises oil box, oil absorption filter, oil return filter core, oil return box and oil return diffuser; Its main points are that described oil return filter core is placed in the oil return diffuser; Described oil return diffuser is provided with pore, and its effect is will become mild after the effect of hydraulic oil process diffuser, is difficult for producing bubble; The top of described oil return diffuser is connected with oil return box; The opening of described oil return box below and the upper interface of oil return filter core match; Be provided with back-up ring and return spring in described oil return box, its effect is to prevent that hydraulic oil from getting back to hydraulic oil container without filter core; Described return spring top is provided with cover plate; Described cover plate is provided with pressure transducer; Be provided with dividing plate between described oil return diffuser and oil absorption filter, prevent that in the engineering machinery operation process, fluid produces bubble.

Described oil return filter core is provided with handle.

The flow of described oil return filter core can descend because of the accumulation of pollutant, impurity, and in oil return box, pressure increases, and when pressure increased to the pressure transducer preset pressure, pressure transducer will be reported to the police, reminding user to replace or cleaning filter core.

When effectively having overcome the excavator hydraulic system oil return, the utility model easily produces the technical problem that bubble, working life are short, change oil return filter core inconvenience.

Description of drawingsAccompanying drawing is the utility model structural representation.

In figure 1, pressure transducer 2, cover plate 3, return spring 4, back-up ring 5, oil return filter core 6, oil return box 7, oil return diffuser 8, dividing plate 9, oil absorption filter

EmbodimentIt comprises oil box, oil absorption filter 9, oil return filter core 5, oil return box 6 and oil return diffuser 7 the utility model; Described oil return filter core 5 is placed in oil return diffuser 7; Described oil return diffuser 7 is provided with pore, and the top of described oil return diffuser 7 is connected with oil return box 6; The opening of described oil return box 6 belows and the upper interface of oil return filter core 5 match; Be provided with back-up ring 4 and return spring 3 in described oil return box 6, described return spring 3 tops are provided with cover plate 2; Described cover plate 2 is provided with pressure transducer 1; Be provided with dividing plate 8 between described oil return diffuser 7 and oil absorption filter 9.

The utility model hydraulic oil container and oil return filter cartridge construction make hydraulic oil flow out to the outside from the inside of filter core, the impurity of hydraulic oil inside collects in the inside of filter core, take in the lump fuel tank out of when renew cartridge more, can the Re-pollution fuel tank, keep the turbidity test of fuel tank internal constant;

This novel hydraulic oil tank is provided with the impulse force that the oil return diffuser can reduce hydraulic oil, reduces the generation of bubble, and then the protection hydraulic parts, extends hydraulic oil working life.

This novel hydraulic oil tank is provided with pressure transducer, and when the oil return box internal pressure arrived preset pressure, pressure transducer was reported to the police, and reminding user to replace hydraulic oil-returning filter core is more directly notified the user more renew cartridge;

This novel oil return filter core is integrated type, is designed with the filter core handle, can directly extract filter element replacing when changing, and top enters hydraulic oil, and the bottom is closed, and hydraulic oil only has through filtering just can get back to fuel tank.

Oil box of the present utility model is welded by the high-quality hot rolling steel plate, inside is provided with oil return box 6 and oil return diffuser 7, oil return filter core 5 is positioned over oil return diffuser 7 inside, and oil return filter core 5 bottom concave stations coordinate fully with the boss of oil return diffuser bottom, is limited to oil return diffuser 7 inside.

Back-up ring 4 is installed in oil return filter core top, and oil return box 6 bottoms are provided with O type ring recess, and back-up ring is combined closely with the oil return box bottom under the effect of return spring 3, and the sealing of O type circle is arranged simultaneously, prevents that hydraulic oil from getting back to hydraulic oil container without filter core.

The oil return filter core is provided with oil-resistant rubber insert in two ends Shang Xia 5, the upper end oil-resistant rubber insert contacts with back-up ring 4, lower end oil-resistant rubber insert and oil return diffuser 7 bottom close contacts, effect at return spring 3, the upper end can stop hydraulic oil to enter fuel tank without filtration, the below rubber pad can when a large amount of hydraulic oil impact the oil return filter core, play buffer function.

In engineering machinery when work,, hydraulic oil enters into oil return box 6 from return opening, enters into oil return filter core 5 inside by return spring 3 gaps, after filtering through oil return filter 5, passes oil return diffuser 7 and gets back to hydraulic oil container.Oil return diffuser 7 will become mild with pore after the effect of hydraulic oil process diffuser, be difficult for producing bubble.Dividing plate 8 is placed in fuel tank internal and prevents that engineering machinery operation process fluid from producing bubble.The hydraulic pressure main pump works on, and carries out new work cycle after hydraulic oil process oil suction filter element filtering.

Engineering machinery operation is after after a while, oil return filter core 5 can descend because of pollutant, impurities accumulation flow, in oil return box, pressure increases, when pressure increases to pressure transducer 1 preset pressure, pressure transducer is reported to the police, the reminding user to replace filter core can make the user utilize to greatest extent filter core, saves the turbidity test of customer using cost and assurance hydraulic system.

Claims

1. hydraulic oil container with oil return system, it comprises oil box, oil absorption filter, oil return filter core, oil return box and oil return diffuser; It is characterized in that described oil return filter core is placed in the oil return diffuser; Described oil return diffuser is provided with pore, and the top of described oil return diffuser is connected with oil return box; The opening of described oil return box below and the upper interface of oil return filter core match; Be provided with back-up ring and return spring in described oil return box, be provided with cover plate above described return spring; Described cover plate is provided with pressure transducer; Be provided with dividing plate between described oil return diffuser and oil absorption filter.

2. a kind of hydraulic oil container with oil return system according to claim 1, is characterized in that described oil return filter core is provided with handle.