CN201415081Y

CN201415081Y - Seal device for cylindrical water filter

Info

Publication number: CN201415081Y
Application number: CN200920053197XU
Authority: CN
Inventors: 周腾芳; 罗小军; 郑莺莺; 徐永海
Original assignee: GUANGZHOU SAIAI ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: GUANGZHOU SAIAI ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2009-03-24
Filing date: 2009-03-24
Publication date: 2010-03-03
Anticipated expiration: 2019-03-24

Abstract

The utility model relates to a seal device, in particular to a seal device for a cylindrical water filter, which comprises an annular seal ring and an annular concave groove arranged on an end cover of the water filter for placing the annular seal ring, the annular seal ring is provided with an annular groove with an inward opening, the inner lateral side of the annular groove is in tight fit withthe concave groove, and the outer lateral side of the annular groove is an inclined plane and extends outwards to be in close fit with the inner wall surface of a filter cylinder; the seal device utilizes the outward pressure of the medium in the filter cylinder to realize effective sealing and has the technical effect of conveniently opening the end cover of the filter cylinder for washing the interior of the filter cylinder.

Description

Sealing device in the drum type brake water filter

Technical field

A kind of sealing device that the utility model relates to refers in particular to the sealing device in the drum type brake water filter.

Background technology

As everyone knows, the drum type brake water filter needs the filter core of the inside is cleaned in use for some time, it generally includes a hollow filter cylinder and one and is used for the end cap of water filter element in the closed and fixed hollow filter cylinder, and sealing is generally taked threaded engagement to compress O-ring seal and obtained effective seal between filter cylinder and end cap.Usually, sealing ring with rectangle or O shape cross section is installed in the formed annular recess on this end cap, the shortcoming of the sealing means of this class sealing ring is, the screw thread that the preceding topic of its sealing is an end cap is applied to the pressure on the sealing ring, must be greater than the pressure of container inner medium, when big or bearing area is big when container inner medium pressure, need very big turning moment just can open, this opens for user (particularly old user) and brings very big difficulty when filter cylinder cleans filter core.Therefore, how to address the above problem, become problem demanding prompt solution.

The utility model content

The technical problems to be solved in the utility model provides the sealing device in a kind of drum type brake water filter, and it realizes effective seal by medium outward pressure in the filter cylinder, and the end cap that can easily open filter cylinder carries out the inner technique effect that cleans.

For solving the problems of the technologies described above, a kind of sealing device that is used for the drum type brake water filter, it comprises that an O-ring seal and one are positioned on the water filter end cap, are used to lay the annular recess of this O-ring seal, described O-ring seal is provided with the inside annular groove of an opening, closely cooperates between the inner side edge of annular groove and groove, outer side edges tilts to stretch out and the internal face snug fit of filter cylinder.

Sealing device in the above-mentioned drum type brake water filter, described annular groove is inverted V-shaped.

Sealing device in the above-mentioned drum type brake water filter, described outer side edges are the inclined-plane between 15 ° ± 5 °.

Sealing device in the above-mentioned drum type brake water filter, described inverted V-shaped annular groove angle is between 15 ° ± 5 °.

After the utility model adopted said structure, when the end cap of filter cylinder was screwed into design attitude, the outer shroud end and the filter cylinder inwall of O-ring seal outer side edges were the sliding mode snug fit, and inner side edge then is close in the groove of end cap and closely cooperates.When injecting aqueous medium in the filter cylinder, because the annular groove outer side edges and the filter cylinder tube internal face snug fit of sealing ring, and its inner side edge also is close in the groove of end cap, hydraulic pressure is exerted pressure to the annular groove of sealing ring the annular groove opening is opened outward in the filter cylinder, makes to paste more tightly respectively between the groove of outer side edges and filter cylinder inwall, inner side edge and end cap.Bear within the pressure limit at the O-ring seal material, aqueous medium pressure is big more, seals tightly more.Aqueous medium pressure becomes little in container, it is little of being zero that the pressure that is applied to the inside and outside dual-side of annular groove of O-ring seal becomes, make the outer shroud end of outer side edges be the sliding mode that loop wire contacts with the filter cylinder inwall, guarantee the minimum contact-making surface between them and reduce pressure, thereby solved the difficult technical barrier of uncapping that existing water purifier filter cylinder sealing means brings.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, but does not constitute any restriction of the present utility model.

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

Fig. 2 is the A portion partial structurtes schematic diagram of Fig. 1;

Fig. 3 is the cross-sectional view of O-ring seal;

Fig. 4 be O-ring seal upward view.

Among the figure: 1 is filter cylinder, and 2 is end cap, and 3 is water inlet, and 4 is outlet pipe, and 5 is filter core, and 6 are O-ring seal, and 61 is annular groove, and 62 is inner side edge, and 63 is outer side edges.

The specific embodiment

Shown in Fig. 1-4, a kind of sealing device that is used for the drum type brake water filter, it comprises that an O-ring seal 6 and one are positioned on the end cap 2 of water filter, are used to lay the annular recess 21 of this O-ring seal 6, O-ring seal 6 is provided with the inside annular groove of an

opening

61, and 21 of the inner side edge 62 of annular groove 61 and grooves closely cooperate, outer side edges 63 tilts to stretch out and the internal face snug fit of filter cylinder 1; Annular groove 61 is inverted V-shaped; The annular groove angle that is inverted V-shaped is between 15 ° ± 5 °.

The utility model is when concrete the use, end cap 2 and filter cylinder 1 are threaded, filter cylinder 1 following side is provided with water inlet 3, and filter core 5 and end cap 2 are set to one, the outlet pipes 4 of the 2 outside connections along its center to end cap, and water is entered in the filter cylinder 1 by water inlet 3 and exported by outlet pipe 4 after filter core 5 filters.When end cap 2 was screwed into design attitude, the outer shroud end of O-ring seal 6 outer side edges 63 and the inwall of filter cylinder 1 were the sliding mode snug fit, and inner side edge 62 then is close in the groove 21 of end cap 2 and closely cooperates.When injecting aqueous medium in the filter cylinder 1, because the outer side edges 63 of the annular groove 61 of O-ring seal 6 closely cooperates with the internal face of filter cylinder 1, and its inner side edge 62 also is close in the groove 21 of end cap 1, hydraulic pressure is exerted pressure to the annular groove 61 of O-ring seal 6 annular groove 61 openings is opened in the filter cylinder 1, makes to paste more tightly respectively between the groove 21 of outer side edges 63 and filter cylinder 1 inwall, inner side edge 62 and end cap 2.Material at O-ring seal 6 bears within the pressure limit, and aqueous medium pressure is big more, seals closely knitly more.Aqueous medium pressure becomes little in container, it is little of being zero that the pressure that is applied to the inside and outside dual-sides of annular groove 61 of O-ring seal 6 becomes, make the outer shroud end of outer side edges 63 be the sliding mode that loop wire contacts with the inwall of filter cylinder 1, guarantee the minimum contact-making surface between them and reduce pressure, thereby solved the difficult technical barrier of uncapping that existing water purifier filter cylinder sealing means brings.

Above-described embodiment only is a preferred implementation of the present utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make the adjustment and the improvement of some structures, these also should be considered as belonging to protection domain of the present utility model.

Claims

1. sealing device that is used for the drum type brake water filter, it comprises O-ring seal and is positioned on the water filter end cap, is used to lay the annular recess of this O-ring seal, it is characterized in that: described O-ring seal is provided with the inside annular groove of an opening, closely cooperates between the inner side edge of annular groove and groove, outer side edges tilts to stretch out and the internal face snug fit of filter cylinder.

2. according to the sealing device in the described drum type brake water filter of claim 1, it is characterized in that: described annular groove is inverted V-shaped.

3. according to the sealing device in the described drum type brake water filter of claim 2, it is characterized in that: described outer side edges gradient is between 15 ° ± 5 °.

4. according to the sealing device in the described drum type brake water filter of claim 2, it is characterized in that: the described annular groove angle of inverted V-shaped that is is between 15 ° ± 5 °.