CN2889443Y

CN2889443Y - Filter

Info

Publication number: CN2889443Y
Application number: CN 200620012427
Authority: CN
Inventors: 高希民
Original assignee: Chinacoal Beijing Coal Mining Machinery Co Ltd
Current assignee: Chinacoal Beijing Coal Mining Machinery Co Ltd
Priority date: 2006-04-17
Filing date: 2006-04-17
Publication date: 2007-04-18
Anticipated expiration: 2016-04-17

Abstract

The utility model is to provide a filter, which comprises a cylinder-shaped filter main body and a filter element. One end of the filter main body has a liquid outlet, a joint connected with a hydraulic system pipeline is provided outside the liquid outlet, wherein the other end of the cylinder-shaped filter main body is equipped with a filter chamber, and the filter element is fixed inside the filter chamber. The filter element comprises: a core head, a liquid inlet inside the core head, and screw thread outside the core head, which is used to fix the valve core inside the filter chamber; a filter screen, which is cylinder-shaped and installed along the direction of filter chamber wall, one end is fixed on the core head, which is located at one end of the filter chamber, the filtrate can flow into the above-mentioned filter chamber via the filter screen, and the filter chamber is communicated with the circulating pipeline of the hydraulic system via the liquid outlet; a plug, the plug is fixed on the other end of the cylinder-shaped filter screen, which is approximately perpendicular to the circulating pipeline, the plug is used to prevent filtrate from not passing through the filter chamber and directly flowing into the hydraulic circulating pipeline.

Description

Filter

Technical field

The utility model relates to filter, particularly colliery comprehensive mining support apparatus---a kind of hydraulic system filter that adopts in the hydraulic support.

Background technology

Filter is very important parts in the hydraulic support, is to be used for keeping hydraulic system to clean, prevent that contamination particle from entering the element of liquid-supplying system, and it can guarantee the normal operation of Hydraulic Elements and system.The filter that adopts adopts the structure of establishing screen pack along the cross-wise direction of pipeline mostly at present, and there is following deficiency in such filter: 1) because filter area is little, it is little to cross flow quantity, can not satisfy the demand of jumbo hydraulic support; 2) if screen pack is too fine and closely woven, then stop up easily, can't satisfy the requirement of flow, if too sparse then filtering accuracy is low, contamination particle enters hydraulic system easily, damages Hydraulic Elements, the system that influences normally moves; 3) pressure reduction of screen pack both sides is big, and screen pack damages easily, in case screen pack damages, gently then needs the repair and replacement influence to produce, and is heavy then damage Hydraulic Elements, causes the damage of hydraulic test.In view of above deficiency, designer of the present utility model has designed a kind of novel filter.

Summary of the invention

The purpose of this utility model is to provide a kind of filter, and this filter not only can overcome above-mentioned deficiency, accomplishes that flow is big, filtering accuracy is high, and long service life, changes easily.

Filter of the present utility model comprises the filter body 1 and a filter core 2 of a tubular, one end of described filter body 1 is provided with liquid outlet 11, be provided with the interface 12 that joins with system pipeline in the outside of liquid outlet 11, this interface 12 is used for filter is fixed on hydraulic system, it is characterized in that, the other end at the filter body of described tubular is provided with a filter chamber 3, and described filter core 2 is fixed in the described filter chamber 3.

Another feature of filter of the present utility model is that described filter core comprises: the inboard of core print 24, this core print is provided with inlet 25, and its outside is provided with screw thread, and this screw thread is used for filter core is fixed on filter chamber 3; Screen pack 21, this screen pack 21 is a tubular, and along the chamber wall direction setting of filter chamber 3, the one end is fixed on the end that core print 24 is arranged in filter chamber, filtrate can flow in the above-mentioned filter chamber 3 through this screen pack, and described filter chamber is connected with the circulation line of hydraulic system by liquid outlet 11.

Another feature of filter of the present utility model is, described filter core 2 also comprises a shutoff 22, this shutoff 22 is fixed on the other end of the screen pack 21 of tubular, is approximately perpendicular to circulation line, and this shutoff is used to stop filtrate to flow directly into hydraulic circuit without filter chamber.

The another of filter of the present utility model is characterised in that, is provided with sealing ring 23 between filter body 1 and filter core 2.

Because filter element of the present utility model is provided with the screen pack that is provided with along filter chamber chamber wall direction, this has not only increased the area of screen pack greatly, and, because the end at screen pack is provided with the shutoff that is approximately perpendicular to circulation line, so can effectively reduce the pressure reduction of screen pack both sides, filtrate is fully filtered in filter chamber, improved the service life of Hydraulic Elements greatly.And, owing to the area of screen pack increases greatly, so effectively reduce because the mechanical breakdown that the obstruction of screen pack causes has improved production efficiency greatly.

Description of drawings

Fig. 1 is a structure of filter profile of the present utility model.

Fig. 2 is the section of structure of filter element of the present utility model.

The specific embodiment

Followingly structure of filter of the present utility model is elaborated with reference to accompanying drawing.

Fig. 1 is a structure of filter profile of the present utility model.Fig. 2 is the section of structure of filter element of the present utility model.1 is the filter body of tubular, end at this filter body is provided with liquid outlet, be provided with the interface that joins with hydraulic system pipeline in the outside of liquid outlet, this interface is used for filter is fixed on hydraulic system, the other end at the filter body of this tubular is provided with a filter chamber 3, and filter core 2 is fixed in this filter chamber.Filter core 2 comprises: the inboard of core print 24, this core print 24 is provided with inlet, is provided with screw thread in its outside, and this screw thread is used for spool is fixed on filter chamber; Screen pack 21, this screen pack are tubular, are provided with along filter chamber chamber wall direction, and the one end is fixed on the end that core print 24 is arranged in filter chamber, and filtrate can flow in the filter chamber 3 through this screen pack 21, and filter chamber 3 is connected with the circulation line of hydraulic system.

22 is a shutoff, and this shutoff 22 is fixed on the other end of the screen pack 21 of tubular, is approximately perpendicular to circulation line, and this shutoff is used to stop filtrate to flow directly into hydraulic circuit without filter chamber 3.

Between filter body and filter core, be provided with sealing ring 23.

In addition; for the ease of expression; the accompanying drawing of present embodiment is that example is illustrated with screen pack cylindraceous; but filter of the present utility model is not limited to screen pack cylindraceous; can also be the screen pack of square tube shape, five jiaos of tubulars, hexagonal tubular, oval cylinder etc., so long as the purport that satisfies the tubular screen pack that is provided with along filter chamber chamber wall direction of the present utility model is all in protection domain of the present utility model.

In addition, in the present embodiment, adopted the structure that adds shutoff 22 along the tubular screen pack 21 of filter chamber chamber wall setting to realize filter core 2 of the present utility model, but can adopt along the tubular screen pack of filter chamber chamber wall setting with perpendicular to the combination of the screen pack of circulation line yet and realize filter core of the present utility model, but its filter efficiency does not reach the effect of present embodiment.

Claims

1, a kind of filter, the filter body (1) and the filter core (2) that comprise a tubular, one end of described filter body is provided with liquid outlet, be provided with the interface (12) that joins with hydraulic system pipeline in the outside of liquid outlet (11), this interface (12) is used for filter is fixed on hydraulic system, it is characterized in that be provided with a filter chamber (3) at the other end of the filter body of described tubular, described filter core (2) is fixed in the described filter chamber (3).

2, filter as claimed in claim 1 is characterized in that, described filter core comprises: the inboard of core print (24), this core print (24) is provided with inlet (25), and its outside is provided with screw thread, and this screw thread is used for filter core is fixed on filter chamber (3); Screen pack (21), this screen pack (21) is a tubular, be provided with along filter chamber (3) chamber wall direction, the one end is fixed on the end that core print (24) is arranged in filter chamber, filtrate can flow in the above-mentioned filter chamber through this screen pack, and described filter chamber is connected with the circulation line of hydraulic system by liquid outlet (11).

3, filter as claimed in claim 2, it is characterized in that, described filter core (2) also comprises a shutoff (22), this shutoff (22) is fixed on the other end of the screen pack (21) of tubular, be approximately perpendicular to circulation line, this shutoff (22) is used to stop filtrate to flow directly into hydraulic circuit without filter chamber (3).

4, any described filter of claim 1～3 is characterized in that, is provided with sealing ring (23) between filter body and filter core.

5, any described filter of claim 1～3 is characterized in that, described filter connects for the hydraulic quick coupler tubular type with the interface (12) of hydraulic system pipeline.