A self-sealing filter

Abstract

The utility model discloses a kind of self-sealing filters, it includes filter body, the both ends of the filter body are equipped with pipe head, the outside screwing of pipe head has fixed cap, the fixed cap includes the through-hole of the alignment setting with pipe head inner hole, the outer end of the through-hole is formed with inner step portion, hose joint is equipped in the through-hole, the hose joint includes the pipe body for inserting hose and the conical cap located at the pipe body end, the conical cap is inserted in the pipe head inner hole, and the maximum diameter of the conical cap is greater than the maximum inner diameter of the pipe head inner hole, the pipe body is located at the inner side of the inner step portion and there is annular gap between the two, the inner step portion and the planar portion of the conical cap abutment cooperation. Compared with prior art, the utility model has the characteristics of higher connection tightness, better sealing effect etc.

Description

Technical Field

[0001] This utility model relates to a flatbed filter for printing equipment, and more particularly to a self-sealing filter. Background Technology

[0002] Ink filters for printing equipment are generally flat-plate structures. Please refer to the Chinese patent publication document CN209361980U entitled "A Digital Printing Ink Filtering Device," which describes a structure that includes: "a bracket 1, a fixing groove 2, a first cylindrical filter 3, and a flat-plate filter 7. The first cylindrical filter 3 is fixed inside the bracket 1 by a cylindrical filter bracket 10, and an input pipe 12 is provided below the first cylindrical filter 3. An output pipe 13 at the lower end of the first cylindrical filter 3 is connected to a sand mill via a flexible hose, and a flat-plate filter output pipe 27 at the lower end of the flat-plate filter 7 is connected to an ink tank via a flexible hose." In this type of structure, the flat-plate filter 7 and the flexible hose are directly plugged in, resulting in weak connection tightness and sealing. In practical applications, problems such as ink leakage and loosening are likely to occur. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a self-sealing filter with higher connection tightness and better sealing effect, which addresses the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A self-sealing filter includes a filter body with tube heads at both ends. A fixing cap is screwed onto the outer side of each tube head. The fixing cap includes a through hole aligned with the inner hole of the tube head. An inner step is formed at the outer end of the through hole. A hose connector is provided inside the through hole. The hose connector includes a tube body for inserting a hose and a conical cap located at the end of the tube body. The conical cap is inserted into the inner hole of the tube head, and the maximum diameter of the conical cap is greater than the maximum inner diameter of the inner hole of the tube head. The tube body is located inside the inner step and there is an annular gap between them. The inner step and the flat part of the conical cap abut against each other.

[0006] Preferably, the inner bore of the tube head is formed with an inner conical surface.

[0007] Preferably, the outer side of the fixing cap has an anti-slip ridge.

[0008] Preferably, the filter body includes a first disc-shaped shell, a second disc-shaped shell, and an annular sleeve. The first disc-shaped shell and the second disc-shaped shell are assembled relative to each other. The annular sleeve is used to fix the first disc-shaped shell and the second disc-shaped shell together. Two tube ends are respectively located on the outside of the first disc-shaped shell and the second disc-shaped shell.

[0009] Preferably, a circular receiving groove is formed on the side of the first disc-shaped shell facing the second disc-shaped shell, and the second disc-shaped shell is engaged in the circular receiving groove.

[0010] Preferably, an annular groove is formed on the inner ring side of the annular sleeve, and the edge of the first disc-shaped shell is engaged in the annular groove.

[0011] In the self-sealing filter disclosed in this utility model, the filter body is a plate filter with tube heads at both its inlet and outlet ends. The hose connector includes a tube body and a conical cap. The tube body is used to attach the hose, and the conical cap is inserted into the inner hole of the tube head. Because the maximum diameter of the conical cap is greater than the maximum inner diameter of the inner hole of the tube head, the two are in abutting and limiting relationship. The hose passes through the annular gap. When the fixing cap is screwed relative to the tube head, the inner stepped part and the flat part of the conical cap gradually abut against each other and apply pressure to the hose connector. Based on the tight fit between the conical cap and the inner hole of the tube head, the sealing fit is improved. At the same time, the hose is clamped in the annular gap, thereby achieving reliable fixation. Attached Figure Description

[0012] Figure 1 Disassembly of the self-sealing filter of this utility model Figure 1 ;

[0013] Figure 2 Disassembly of the self-sealing filter of this utility model Figure 2 ;

[0014] Figure 3 This is a cross-sectional view of the self-sealing filter of this utility model;

[0015] Figure 4 This is a perspective view of the self-sealing filter of this utility model. Detailed Implementation

[0016] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0017] This utility model discloses a self-sealing filter, combined with Figures 1 to 4As shown, it includes a filter body 1, with tube heads 2 at both ends of the filter body 1. A fixing cap 3 is screwed onto the outer side of the tube head 2. The fixing cap 3 includes a through hole 30 aligned with the inner hole of the tube head 2. An inner step portion 31 is formed at the outer end of the through hole 30. A hose connector 4 is provided inside the through hole 30. The hose connector 4 includes a tube body 40 for inserting a hose and a conical cap 41 located at the end of the tube body 40. The conical cap 41 is inserted into the inner hole of the tube head 2, and the maximum diameter of the conical cap 41 is greater than the maximum inner diameter of the inner hole of the tube head 2. The tube body 40 is located inside the inner step portion 31, and there is an annular gap 32 between the two. The inner step portion 31 abuts against the flat portion of the conical cap 41.

[0018] In the above structure, the filter body 1 is a plate filter with tube heads 2 at its inlet and outlet ends. The hose connector 4 includes a tube body 40 and a conical cap 41. The tube body 40 is used to attach a hose, and the conical cap 41 is inserted into the inner hole of the tube head 2. Because the maximum diameter of the conical cap 41 is greater than the maximum inner diameter of the inner hole of the tube head 2, the two are in abutting and limiting relationship. The hose passes through the annular gap 32. When the fixing cap 3 is screwed relative to the tube head 2, the inner step portion 31 and the flat portion of the conical cap 41 gradually abut against each other and apply pressure to the hose connector 4. Based on the tight fit between the conical cap 41 and the inner hole of the tube head 2, the sealing fit is improved. At the same time, the hose is clamped in the annular gap 32, thereby achieving reliable fixation.

[0019] To better match the conical cap 41, in this embodiment, please refer to... Figure 3 The inner hole of the tube head 2 is formed with an inner conical surface 20.

[0020] During the screwing process, in order to facilitate the application of torque to the fixing cap 3, this embodiment is provided with anti-slip measures, specifically, the outer side of the fixing cap 3 is formed with anti-slip ridges 33.

[0021] Regarding the specific structure of the filter body 1, in this embodiment, the filter body 1 includes a first disc-shaped housing 10, a second disc-shaped housing 11, and an annular sleeve 12. The first disc-shaped housing 10 and the second disc-shaped housing 11 are assembled opposite each other, and the annular sleeve 12 is used to fix the first disc-shaped housing 10 and the second disc-shaped housing 11 together. Two tube ends 2 are respectively provided on the outside of the first disc-shaped housing 10 and the second disc-shaped housing 11. In practical applications, filter paper needs to be sandwiched between the first disc-shaped housing 10 and the second disc-shaped housing 11.

[0022] To ensure a tight fit between the two disc-shaped shells, in this embodiment, the two shells are joined together. Figures 1 to 3As shown, a circular receiving groove 14 is formed on the side of the first disc-shaped housing 10 facing the second disc-shaped housing 11, and the second disc-shaped housing 11 is engaged in the circular receiving groove 14.

[0023] In this embodiment, the annular sleeve 12 is used to fix the two disc-shaped shells by means of a sleeve connection, such as... Figure 1 and Figure 2 As shown, an annular groove 120 is formed on the inner ring side of the annular sleeve 12, and the edge of the first disc-shaped shell 10 is engaged in the annular groove 120.

[0024] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A self-sealing filter, characterized in that, The filter includes a filter body (1), with tube heads (2) at both ends. A fixing cap (3) is screwed onto the outer side of the tube head (2). The fixing cap (3) includes a through hole (30) aligned with the inner hole of the tube head (2). An inner step portion (31) is formed at the outer end of the through hole (30). A hose connector (4) is provided inside the through hole (30). The hose connector (4) includes a tube body (40) for inserting a hose and a conical cap (41) located at the end of the tube body (40). The conical cap (41) is inserted into the inner hole of the tube head (2), and the maximum diameter of the conical cap (41) is greater than the maximum inner diameter of the inner hole of the tube head (2). The tube body (40) is located inside the inner step portion (31), and there is an annular gap (32) between them. The inner step portion (31) abuts against the flat portion of the conical cap (41).

2. The self-sealing filter as described in claim 1, characterized in that, The inner hole of the tube head (2) is formed with an inner conical surface (20).

3. The self-sealing filter as described in claim 1, characterized in that, The outer side of the fixing cap (3) has an anti-slip ridge (33).

4. The self-sealing filter as described in claim 1, characterized in that, The filter body (1) includes a first disc-shaped housing (10), a second disc-shaped housing (11), and an annular sleeve (12). The first disc-shaped housing (10) and the second disc-shaped housing (11) are assembled relative to each other. The annular sleeve (12) is used to fix the first disc-shaped housing (10) and the second disc-shaped housing (11) together. Two tube heads (2) are respectively located on the outside of the first disc-shaped housing (10) and the second disc-shaped housing (11).

5. The self-sealing filter as described in claim 4, characterized in that, The first disc-shaped housing (10) has a circular receiving groove (14) formed on the side facing the second disc-shaped housing (11), and the second disc-shaped housing (11) is fitted into the circular receiving groove (14).

6. The self-sealing filter as described in claim 5, characterized in that, The inner ring side of the annular sleeve (12) has an annular groove (120), and the edge of the first disc-shaped shell (10) is engaged in the annular groove (120).

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