CN208526011U - A kind of RFA series mini direct returning type return filter - Google Patents

Abstract

The utility model relates to art of filters, specifically a kind of RFA series mini direct returning type return filter, including filter cover, O-ring, filter, pagoda, gasket, filter core, by-passing valve, filter cylinder and plug, the by-passing valve is fixedly mounted on the upper end of plug, the lower end of filter core contradicts on by-passing valve, gasket is mounted on the junction of filter and filter cylinder, pagoda is mounted in filter, the lower end of pagoda is contradicted in the upper end of filter core, filter cover is fixedly mounted on the upper end of filter, O-ring is mounted on the junction of filter cover and filter, the middle part of filter cover is equipped with the hold-down column having a style of one's own with it, the lower end of hold-down column is pressed on the upper end of pagoda, fixation hole there are four being set on filter, bolt hole there are four being set in filter cover.The utility model has the beneficial effects that not only structure is beautiful, and easy to process and assembling, production and assembly efficiency are greatly improved, the installation of filter core is easy to implement, effectively improves the service life of filter housings.

Description

A kind of RFA series mini direct returning type return filter

Technical field

The utility model relates to art of filters, specifically a kind of RFA series mini direct returning type return filter.

Background technique

With the development of filter, user demand filtering accuracy is higher and higher.Filtering accuracy have it is higher and higher, filtering it is miscellaneous The type of matter is also more and more, and pressure is consequently increased, with the increase of pressure and in order to improve the service life of filter, present Filter filter cover and the connection type of filter are that screw thread screws, and such structure has very big pressure when in use, and Screw thread can be squeezed and deformed after long-time use, when causing to replace filter core and internal spare and accessory parts, filter cover gets stuck, and can not dismantle down Come, and the filter core for being fixedly mounted on filter interior is not easy to replace.

Utility model content

The purpose of this utility model is to provide a kind of RFA series mini direct returning type return filters, it is intended to effectively solve The situation for making filter cover deformed threads get stuck by using for a long time at present, and entire filter is caused to be scrapped.

The technical solution of the utility model is: including filter cover, O-ring, filter, pagoda, gasket, filter core, by-passing valve, filter Cylinder and plug, the plug and filter are separately mounted to the lower end and upper end of filter cylinder, and the by-passing valve is fixedly mounted on plug Upper end, the filter core is located in filter cylinder and the lower end of filter core contradicts on by-passing valve, and the gasket is mounted on filter and filter cylinder Junction, the pagoda is mounted in filter and the lesser one end of pagoda diameter is set up, and the lower end of pagoda, which contradicts, is filtering The upper end of the core and side wall of pagoda lower part is bonded with the inner wall of filter, the filter cover is fixedly mounted on the upper end of filter, described O-shaped Circle is mounted on the junction of filter cover and filter, and the middle part of the filter cover is equipped with the hold-down column having a style of one's own with it, the hold-down column Lower end be pressed on the upper end of pagoda, set on the filter there are four the fixation hole for being in distributed rectangular, the filter cover is equipped with four A bolt hole in distributed rectangular, four bolts hole and four fixation holes correspond, and pass through spiral shell between the filter cover and filter Bolt is fixedly connected.

In one preferred embodiment of the utility model, it is equipped with through-hole in the middle part of the pagoda, hold-down column and filter cover, in work Make under state, the through-hole in pagoda, hold-down column and filter cover is sequentially communicated.

In one preferred embodiment of the utility model, the two sides of the filter are respectively equipped with first to have a style of one's own with it and connect Connector and the second connector.

In one preferred embodiment of the utility model, the by-passing valve includes valve body, connecting column, several limited blocks, valve Plug and spring, the valve body is interior to be equipped with accommodating chamber, and the upper end of valve body is equipped with valve, and connecting column is mounted on the lower end of accommodating chamber, valve Plug is located at the upper end of accommodating chamber and valve plug is pressed on valve, and the lower end of the valve plug is equipped with fixed column, and all limited blocks are in circle It is mounted on the side of valve plug week and is fixedly connected with the valve body, the spring is located in accommodating chamber and the both ends of spring are respectively sleeved at On connecting column and fixed column.

In one preferred embodiment of the utility model, the lower part of the filter cylinder is close to the position of by-passing valve equipped with several filters Hole.

The utility model provides a kind of RFA series mini direct returning type return filter by improving herein, with the prior art Compare, have the advantages that as follows improve and: change the fit system of previous filter cover and filter, take four hole screw threads, existed with screw Quadrangle locking, filter core and filter cover prevent in use because pressure is excessive, and block screw thread, the situation that rotation does not come out, should RFA series mini direct returning type return filter, not only structure is beautiful, and processing and assembling are all very convenient, substantially increase Production and assembly efficiency, are easy to implement the installation of filter core, effectively improve the service life of filter housings.

Detailed description of the invention

The utility model is further explained with reference to the accompanying drawings and examples:

Fig. 1 is the cross-sectional view of the utility model；

Fig. 2 is the top view of the utility model；

Fig. 3 is the partial sectional view of the utility model；

Fig. 4 is the cross-sectional view of filter cover in the utility model；

Fig. 5 is the front view of filter in the utility model；

Fig. 6 is the cross-sectional view of by-passing valve in the utility model；

Description of symbols: filter cover 1, bolt hole 1a, O-ring 2, filter 3, fixation hole 3a, the first connector 3b, second connects Connector 3c, pagoda 4, gasket 5, filter core 6, by-passing valve 7, valve body 7a, valve 7a1, connecting column 7b, limited block 7c, valve plug 7d, Gu Fixed column 7d1, spring 7e, filter cylinder 8, plug 9, hold-down column 10, filter opening 11.

Specific embodiment

The utility model is described in detail below in conjunction with attached drawing 1 to Fig. 6, to the skill in the utility model embodiment Art scheme is clearly and completely described, it is clear that and the described embodiments are only a part of the embodiments of the utility model, and The embodiment being not all of.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness Every other embodiment obtained, fall within the protection scope of the utility model under the premise of labour.

The utility model provides a kind of RFA series mini direct returning type return filter by improving herein, such as Fig. 1-Fig. 6 institute Show, including filter cover 1, O-ring 2, filter 3, pagoda 4, gasket 5, filter core 6, by-passing valve 7, filter cylinder 8 and plug 9, the plug 9 The lower end and upper end of filter cylinder 8 are separately mounted to filter 3, the by-passing valve 7 is fixedly mounted on the upper end of plug 9, the filter core 6 In filter cylinder 8 and the lower end of filter core 6 contradicts on by-passing valve 7, and the gasket 5 is mounted on the connection of filter 3 and filter cylinder 8 Place, the pagoda 4 is mounted in filter 3 and the lesser one end of 4 diameter of pagoda is set up, and the lower end of pagoda 4 is contradicted in filter core 6 Upper end and the side wall of 4 lower part of pagoda be bonded with the inner wall of filter 3, the filter cover 1 is fixedly mounted on the upper end of filter 3, the O Type circle 2 is mounted on the junction of filter cover 1 and filter 3, and the middle part of the filter cover 1 is equipped with the hold-down column 10 having a style of one's own with it, institute The lower end for stating hold-down column 10 is pressed on the upper end of pagoda 4, is set on the filter 3 there are four the fixation hole for being in distributed rectangular, described It is corresponded there are four being set in filter cover 1 in the bolt hole 1a, four bolt hole 1a of distributed rectangular and four fixation holes, the filter cover It is bolted to connection between 1 and filter 3；Filter cover 1 and filter are connected by the bolt between filter cover 1 and filter 3 The stronger filter cover 1 for screwing cooperation with common screw thread of first 3 connection is compared with filter 3, bolted filter 3 and filter Lid 1 is unlikely to deform after prolonged use, and capable of making it, the service life is longer, the connection of 6 lower end of by-passing valve 7 and filter core, pagoda 4 The sealing of connection and pagoda 4 and filter 3 with 6 upper end of filter core is realized by the elastic compression of O-ring 2, is conveniently replaceable Filter core 6.

The middle part of the pagoda 4, hold-down column 10 and filter cover 1 is equipped with through-hole, in the operating condition, pagoda 4, hold-down column 10 It is sequentially communicated with the through-hole in filter cover 1.

The two sides of the filter 3 are respectively equipped with the first connector 3b and the second connector 3c having a style of one's own with it；Pass through Filter can be connect by the first connector 3b and the second connector 3c with pipeline.

The by-passing valve 7 includes valve body 7a, connecting column 7b, several limited blocks 7c, valve plug 7d and spring 7e, the valve body Accommodating chamber is equipped in 7a, the upper end of valve body 7a is equipped with valve 7a1, and connecting column 7b is mounted on the lower end of accommodating chamber, and valve plug 7d is located at The upper end of accommodating chamber and valve plug 7d is pressed on valve 7a1, the lower end of the valve plug 7d is equipped with fixed column 7d1, all limited blocks 7c is circumferentially mounted on the side of valve plug 7d and is fixedly connected with valve body 7a, and the spring 7e is located in accommodating chamber and spring 7e Both ends are respectively sleeved on connecting column 7b and fixed column 7d1；The sliding position that valve plug 7d is limited by limited block 7c, prevents valve plug Valve plug 7d is pressed on beating for control valve 7a1 on valve 7a1 by spring 7e by 7d positional shift during opening and closing Open and close are closed.

The lower part of the filter cylinder 8 is equipped with several filter openings 11 close to the position of by-passing valve 7.

Specific embodiment of the present utility model: the utility model is processed filter cylinder 8, filter 3 and plug 9 tightly by lathe Match, is fixed 6 upper and lower position of filter core by by-passing valve 7 and pagoda 4, the connection of 6 lower end surface of by-passing valve 7 and filter core is O-ring 2 Compression ratio realizes, pagoda 4 when connection with 6 upper surface of filter core by the compression ratio of O-ring 2 by being realized；And pagoda 4 Positioning is that its operating range is controlled by filter cover 1, the sealing means of pagoda 4 and filter 3 be also by the elastic compression of O-ring 2 Lai It realizes, the filter core 6 being conveniently replaceable in filter cylinder 8；It is realized when the connection of filter cover 1 and filter 3 by four screws, by screw four Angle locking, filter core 6 and filter cover 1 prevent in use because pressure is excessive, and block screw thread, the situation that rotation does not come out.

The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest scope consistent with features of novelty.

Claims (5)

1. a kind of RFA series mini direct returning type return filter, it is characterised in that: including filter cover (1), O-ring (2), filter (3), pagoda (4), gasket (5), filter core (6), by-passing valve (7), filter cylinder (8) and plug (9), the plug (9) and filter (3) It is separately mounted to the lower end and upper end of filter cylinder (8), the by-passing valve (7) is fixedly mounted on the upper end of plug (9), the filter core (6) be located at filter cylinder (8) in and filter core (6) lower end contradict on by-passing valve (7), the gasket (5) be mounted on filter (3) and The junction of filter cylinder (8), the pagoda (4) is mounted in filter (3) and pagoda (4) lesser one end of diameter is set up, precious The lower end of tower (4) is contradicted in the upper end of filter core (6) and the side wall of pagoda (4) lower part is bonded with the inner wall of filter (3), the filter cover (1) it is fixedly mounted on the upper end of filter (3), the O-ring (2) is mounted on the junction of filter cover (1) and filter (3), the filter The middle part of lid (1) is equipped with the hold-down column (10) having a style of one's own with it, and the lower end of the hold-down column (10) is pressed on the upper of pagoda (4) End is set on the filter (3) there are four the fixation hole for being in distributed rectangular, sets that there are four in distributed rectangular on the filter cover (1) Bolt hole (1a), four bolts hole (1a) correspond with four fixation holes, pass through spiral shell between the filter cover (1) and filter (3) Bolt is fixedly connected.

2. RFA series mini direct returning type return filter according to claim 1, it is characterised in that: the pagoda (4), It is equipped with through-hole in the middle part of hold-down column (10) and filter cover (1), in the operating condition, pagoda (4), hold-down column (10) and filter cover (1) On through-hole be sequentially communicated.

3. RFA series mini direct returning type return filter according to claim 1, it is characterised in that: the filter (3) Two sides are respectively equipped with the first connector (3b) and the second connector (3c) having a style of one's own with it.

4. RFA series mini direct returning type return filter according to claim 1, it is characterised in that: the by-passing valve (7) Including valve body (7a), connecting column (7b), several limited blocks (7c), valve plug (7d) and spring (7e), set in the valve body (7a) There is accommodating chamber, the upper end of valve body (7a) is equipped with valve (7a1), and connecting column (7b) is mounted on the lower end of accommodating chamber, the position valve plug (7d) In accommodating chamber upper end and valve plug (7d) be pressed on valve (7a1), the lower end of the valve plug (7d) is equipped with fixed column (7d1), All limited blocks (7c) are circumferentially mounted on the side of valve plug (7d) and are fixedly connected with valve body (7a), and the spring (7e) is located at In the accommodating chamber and both ends of spring (7e) are respectively sleeved on connecting column (7b) and fixed column (7d1).

5. RFA series mini direct returning type return filter according to claim 1, it is characterised in that: the filter cylinder (8) Lower part is equipped with several filter openings (11) close to the position of by-passing valve (7).