CN203067421U

CN203067421U - Filter capable of filtering in bi-directional mode

Info

Publication number: CN203067421U
Application number: CN 201220711306
Authority: CN
Inventors: 周林
Original assignee: SHANGHAI MEISHAN TECHNOLOGY DEVELOPMENT Co Ltd; Shanghai Meishan Iron and Steel Co Ltd; Nanjing Meishan Metallurgy Development Co Ltd
Current assignee: SHANGHAI MEISHAN TECHNOLOGY DEVELOPMENT Co Ltd; Shanghai Meishan Iron and Steel Co Ltd; Nanjing Meishan Metallurgy Development Co Ltd
Priority date: 2012-12-21
Filing date: 2012-12-21
Publication date: 2013-07-17
Anticipated expiration: 2022-12-21

Abstract

Provided is a filter capable of filtering in a bi-directional mode. The filter comprises a filter body, a valve body and four check valves, wherein the filter body is installed on the bottom of the valve body. A valve body upper opening and a valve body lower opening are arranged in two sides of the valve body. The four check valves are installed inside the valve body. Liquid channels are arranged inside the valve body and connect the four check valves. The valve body upper opening is connected with an inlet of a first check valve and an outlet of a second check valve through the liquid channels in the valve body. The valve body lower opening is connected with an inlet of a third check valve and an outlet of a fourth check valve through the liquid channels in the valve body. An inlet of the filter body is connected with an outlet of the first check valve and an outlet of the third check valve through the liquid channels in the valve body. An outlet of the filter body is connected with an inlet of the second check valve and an inlet of the fourth check valve through the liquid channels in the valve body. The filter can achieve bi-directional filtering, and therefore a harmful effect on a hydraulic system by impurities in an oil cylinder can be prevented.

Description

A kind of filter that can be bi-directional filtered

Technical field

The utility model relates to art of filters, particularly a kind of filter that can be bi-directional filtered.

Background technique

At present we use hydraulic valve piece on casting machine to required precision all than higher, the turbidity test of grease are required also higher, and our oil hydraulic cylinder its turbidity test after maintenance are difficult to reach requirement, if the bad meeting of cleaning causes the valve piece stuck, and then influence is produced.

Want that in order to address this problem the someone pipeline between oil cylinder and control valve installs filter, but because the grease between oil cylinder and the control valve is two-way flow, after filter is installed, filter can only play buffer action, can not improve the turbidity test of grease, in-oil cylinder impurity is still stayed in the oil cylinder, therefore easily causes the wearing and tearing of oil cylinder.

The model utility content

At above problem, the utility model is by a kind of filter that can be bi-directional filtered of design, this filter can be realized bi-directional filtered, thereby can prevent that the impurity in the oil cylinder from causing harmful effect to hydraulic system, for reaching this purpose, the utility model provides a kind of filter that can be bi-directional filtered, described filter comprises filter, valve body and four one-way valves, described filter is installed in the valve body bottom, there is the suitable for reading and valve body end opening of valve body described valve body both sides, described four one-way valves are installed in the valve body, in the described valve body fluid passage is arranged, described fluid passage links to each other 4 one-way valves, described valve body is suitable for reading to link to each other with No. two one-way valve outlets with a check valve inlet by fluid passage in the valve body, described valve body end opening links to each other with No. four one-way valve outlets with No. three check valve inlet by fluid passage in the valve body, described filter inlet links to each other with No. three one-way valve outlets with an one-way valve outlet by fluid passage in the valve body, and described filter outlet links to each other with No. four check valve inlet with No. two check valve inlet by fluid passage in the valve body.

As further improvement of the utility model, described one-way valve is the spring one-way valve, and this patent one-way valve can be selected spring one-way valve comparatively commonly used for use.

The utility model is a kind of filter that can be bi-directional filtered, this filter is under the situation that does not change filter core, can realize bi-directional filtered, no matter fluid is forward flow or reverse flow, can both filter grease, and impurity can be deposited in the filter, thereby can prevent that the impurity in the oil cylinder from causing harmful effect to hydraulic system.

Description of drawings

Fig. 1 is the utility model filter taps body structure schematic representation;

Fig. 2 is the utility model filter interior structural representation;

Fig. 3 is the utility model filter valve body principle schematic;

Fig. 4 is that a kind of fluid of the utility model flows to schematic representation;

Fig. 5 is that the another kind of fluid of the utility model flows to schematic representation;

1, filter; 1-1, filter inlet; 1-2, filter outlet;

2, valve body; 2-1, valve body are suitable for reading; 2-2, valve body end opening;

3-1, an one-way valve; 3-2, No. two one-way valves; 3-3, No. three one-way valves;

3-2, No. four one-way valves.

Embodiment

Below in conjunction with drawings and Examples model utility is described in detail:

The utility model is by a kind of filter that can be bi-directional filtered of design, and this filter can be realized bi-directional filtered, thereby can prevent that the impurity in the oil cylinder from causing harmful effect to hydraulic system.

As a kind of specific embodiment of the utility model, the utility model provides valve body structure schematic representation internal structure schematic representation a kind of filter that can be bi-directional filtered as shown in Figure 2 as shown in Figure 1, described filter comprises filter 1, valve body 2 and four one-way valves, described filter 1 is installed in valve body 2 bottoms, there are valve body 2-1 suitable for reading and valve body end opening 2-2 in described valve body 2 both sides, described one-way valve is the spring one-way valve, the this patent one-way valve can be selected spring one-way valve comparatively commonly used for use, described four one-way valves are installed in the valve body 2, in the described valve body 2 fluid passage is arranged, described fluid passage links to each other 4 one-way valves, described valve body 2-1 suitable for reading links to each other with No. two one-way valve 3-2 outlets with one-way valve 3-1 import by fluid passage in the valve body 2, described valve body end opening 2-2 links to each other with No. four one-way valve 3-4 outlets with No. three one-way valve 3-3 import by fluid passage in the valve body 2, described filter inlet 1-1 links to each other with No. three one-way valve 3-3 outlets with an one-way valve 3-1 outlet by fluid passage in the valve body 2, and import links to each other described filter outlet 1-2 with No. four one-way valve 3-4 with No. two one-way valve 3-2 import by fluid passage in the valve body 2.

This patent valve body principle schematic is linked to each other with 4 one-way valves by filter as shown in Figure 3, and as shown in Figure 4, fluid flow through one-way valve 3-1, filter 1, No. four one-way valve 3-4 flow out from valve body end opening 2-2 when from valve body 2-1 oil-feed suitable for reading.

When from valve body end opening 2-2 oil-feed as shown in Figure 5, fluid flow through No. three one-way valve 3-3, filter 1, No. two one-way valve 3-2,2-1 suitable for reading flows out from valve body.

Accompanying drawing 4 and accompanying drawing 5 are contrasted as can be seen, no matter fluid is from the end opening that flows to suitable for reading, still flow to suitable for reading from end opening, all be consistent at filter 5 inner fluid flow directions, therefore this patent can be realized bi-directional filtered, no matter fluid is forward flow or reverse flow, can both filter grease, and impurity can be deposited in the filter, thereby can prevent that the impurity in the oil cylinder from causing harmful effect to hydraulic system, this patent can adopt filter and the one-way valve of standard in addition, also can realize this function with external form, therefore reduce improvement expenses greatly, increase using scope.

The above; it only is preferred embodiment of the present utility model; be not to be the restriction of the utility model being made any other form, and according to any modification or equivalent variations that technical spirit of the present utility model is done, still belong to the utility model scope required for protection.

Claims

One kind can be bi-directional filtered filter, described filter comprises filter (1), valve body (2) and four one-way valves, it is characterized in that: described filter (1) is installed in valve body (2) bottom, there are valve body (2-1) suitable for reading and valve body end opening (2-2) in described valve body (2) both sides, described four one-way valves are installed in the valve body (2), described valve body has fluid passage in (2), described fluid passage links to each other 4 one-way valves, outlet links to each other described valve body (2-1) suitable for reading with No. two one-way valves (3-2) with an one-way valve (3-1) import by the interior fluid passage of valve body (2), outlet links to each other described valve body end opening (2-2) with No. four one-way valves (3-4) with No. three one-way valves (3-3) import by the interior fluid passage of valve body (2), outlet links to each other described filter inlet (1-1) with No. three one-way valves (3-3) with an one-way valve (3-1) outlet by the interior fluid passage of valve body (2), and import links to each other described filter outlet (1-2) with No. four one-way valves (3-4) with No. two one-way valves (3-2) import by the interior fluid passage of valve body (2).
2. a kind of filter that can be bi-directional filtered according to claim 1, it is characterized in that: described one-way valve is the spring one-way valve.