CN202108814U

CN202108814U - Series combination type filter element for grading filtration of coarse and thin particles

Info

Publication number: CN202108814U
Application number: CN2010205012002U
Authority: CN
Inventors: 贺勍
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-23
Filing date: 2010-08-23
Publication date: 2012-01-11
Anticipated expiration: 2020-08-23

Abstract

A series combination type filter element for grading filtration of coarse and thin particles is developed with the aim to solve the problems in the prior art that an ordinary single-stage filter element is easy to block and the designed overflowing capacity lasts for a short time. The surface of the single-stage filter element is easy to be adhered by various impurity particles which are not uniform in size in liquid oil rapidly, so that the oil overflow capacity of the single-stage filter element is reduced, and when the condition reaches a certain degree, a user is forced to stop a machine and change the filter element, otherwise, an oil pump absorbs oil insufficiently, which leads gas etching to generate to damage the oil pump; alternatively, the oil backflow resistance is enlarged, and the power consumption of a system is enlarged, or an oil backflow check valve is opened, so that oil directly flows back into an oil tank. A primary filter element of the series combination type filter element consists of a filter screen which is used for filtering larger impurity particles; and a secondary filter element is a fine filter element for meeting the cleaning requirement of the system. As the coarse filter element filters the larger impurity particles, the oil filtering capacity and the service life of the fine filter element are guaranteed effectively. The installation size of the filter element is the same as that of the existing part, and the cost of the filter element is similar to that of the existing part, so that the filter element is an effective product for replacing the existing filter element.

Description

A kind of series mould assembly thickness gradation filter core

One, technical field:

The utility model relates to the filter core of a kind of hydraulic system with oil purifier.The hydraulic system that is particularly useful for the high cleanliness requirement is used fuel filter element.Also be applicable to the filter core that other various fluid filter systems are used.

Two, background technique:

In all kinds of Hydraulic Power Transmission Systems for the performance reliability and working life of the various hydraulic element in the protective system effectively; Must filter be set at the return opening of the inlet port of hydraulic-pressure pump or system and come the various impurity particles in the filtering fuel tank fluid neutralized system, guarantee the turbidity test of system's inner fluid.

Fuel filter element technology in the present all kinds of hydraulic system all is the one-level filter core, the different just difference of the filter precision grade of filter core.The filter type of this single-stage filter core can guarantee the requirement of system to the filtering traffic and the turbidity test of fluid at the use initial stage, but along with the prolongation of service time, big in the fluid

For a short time the various impurity particles that differ can promptly stick to the surface of filter core, make it cross oily ability and greatly reduce.This situation develops into certain degree, or forces the user to shut down more renew cartridge, otherwise can cause the oil pump oil suction not enough, produces cavitation erosion and damages oil pump; The oil return resistance increases, and increases the energy consumption of system or open the direct oil return oil purifier of return check valve to lose efficacy.These several kinds of situations reality use the direct result produced be main oil pump and element early stage damage or control fails and filter core replacing frequently.

Three, summary of the invention:

The purpose of the utility model is exactly to the easy a kind of series mould assembly thickness gradation filter core that stops up and designed oily ability endurance weak point and develop of existing single-stage filter core.The first filter level that is connected on the Combination filter element is made up of coarse filter element, by the bigger impurity particle of its filtering; Secondary filter core is only the fine filtering core into guaranteeing that system's turbidity test require.Since the coarse filter element filtering bigger impurity particle, the bur on the fine filtering core has only stayed less impurity particle, the speed of being stopped up cartridge surface by their greatly lowers, its oil strain ability with obtained assurance effectively working life.The two-stage filter core of this thickness Combination filter element adopts the mode of inside and outside suit to be fixed on the same skeleton, and its boundary dimension and installation method are all with former identical with the single-stage filter core.

The novel solution of this use is: series mould assembly thickness gradation filter core is combined by skeleton 1, fine filtering core 2, coarse filter element 3, and coarse filter element 3 all is fixed on the skeleton 1 with fine filtering core 2.Different is: this Combination filter element divides internal-suction type and outer suction formula: the coarse filtration level of internal-suction type filter core is installed on the cylindrical of Combination filter element; The coarse filtration level of outer suction formula Combination filter element then is installed in the endoporus of Combination filter element.

Classified filtering of the present invention is compared with existing single-stage filtering technique; Because thickness impurity is by classified filtering; The oil filling capacity and the working life of filter core have been promoted effectively; The more former single-stage filter core of its cost of production increases few, and installation is identical with it with method for using, is the upgrading regeneration product of single-stage filter core.

Four, description of drawings:

Accompanying drawing 1 is the structural drawing of the outer suction formula Combination filter element of the utility model.

Five, embodiment:

The embodiment of the utility model is: when starting oil pump, the interior or intrasystem fluid of fuel tank must be earlier after coarse filter element 3 filterings be coarser than the particle of 1-2 grade of fine filtering core, and the fine filtering core 2 of could and then flowing through filters, and is inhaled into oil pump or flows back to fuel tank.

Claims

1. series mould assembly thickness gradation filter core; Filter core is combined by skeleton (1), fine filtering core (2), coarse filter element (3); It is characterized in that: coarse filter element (3) and fine filtering core (2) stack mounting are formed an in-line thickness double-filtration filter core on skeleton (1).