Dual-hole filter

Abstract

The utility model relates to a small filter screen especially relates to a double-hole filter, it includes the casing, the casing is hollow and is equipped with the baffle in the casing, the baffle will the casing internal space be divided into first filter chamber and second filter chamber, be equipped with the through throttle hole and one-way hole on the baffle, the one-way hole is equipped with the check valve, the casing is equipped with liquid inlet hole and liquid outlet hole, the liquid outlet hole is linked together with second filter chamber and is equipped with the flaky filter screen, the liquid inlet hole is linked together with first filter chamber and along the casing circumferential interval is arranged, the first filter chamber cavity wall is equipped with annular filter screen, brake fluid flows from liquid inlet hole to liquid outlet hole when braking, first passes through annular filter screen at liquid inlet hole and filters into first filter chamber, then passes through check valve and enters second filter chamber, passes through flaky filter screen and filters and flows to brake disc, filters fully, when stopping braking, check valve closes, brake fluid slowly returns through throttle hole, plays the effect of pressure maintenance.

Description

Technical Field

[0001] This utility model relates to small filter screens, and more particularly to dual-pore filters. Background Technology

[0002] The braking system brakes by pressurizing the brake fluid to drive the corresponding brake disc. Filtering the brake fluid can prevent impurities in the brake fluid from wearing away and clogging the flow channels. A dual-hole filter with a one-way valve and a throttling orifice is proposed to have the functions of filtering and maintaining pressure. Utility Model Content

[0003] In view of the technical problems existing in the background art, the present invention aims to provide a dual-hole filter with a one-way valve and a throttling orifice, which has the functions of filtering and pressure holding.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This dual-hole filter includes a housing, the housing is hollow and a partition is provided inside the housing, the partition divides the internal space of the housing into a first filter chamber and a second filter chamber, the partition is provided with a through throttling hole and a one-way hole, the one-way hole is equipped with a one-way valve, the housing is provided with a liquid inlet hole and a liquid outlet hole, the liquid outlet hole is connected to the second filter chamber and is equipped with a sheet-like filter screen, the liquid inlet hole is connected to the first filter chamber and is spaced apart along the circumference of the housing, and an annular filter screen is provided on the wall of the first filter chamber.

[0005] In this design, during braking, the brake fluid flows from the inlet to the outlet. It first passes through the annular filter at the inlet to enter the first filter chamber, then through the one-way valve to enter the second filter chamber. After passing through the sheet filter, it flows to the brake disc for thorough filtration. When braking stops, the one-way valve closes, and the brake fluid slowly flows back through the throttle orifice, achieving a pressure-maintaining effect.

[0006] Preferably, the housing is injection molded, the housing includes fixing ribs, the fixing ribs are spaced apart on the wall of the first filter cavity, and the annular filter screen is located between the fixing ribs and the wall of the first filter cavity.

[0007] In this design, the housing and the annular filter are injection molded together, and the annular filter will not detach from the housing due to the flow of brake fluid.

[0008] Preferably, the throttling orifice is located at the center of the partition, and the one-way orifice is eccentrically positioned.

[0009] In this design, the eccentric setting of the one-way orifice facilitates the installation of the one-way valve.

[0010] Preferably, the liquid outlet is equipped with a bottom cover, which is welded to the sheet filter screen.

[0011] In this solution, the connection is reliable.

[0012] Preferably, the wall of the one-way hole has a taper, and the wall of the one-way hole is provided with ribs spaced apart circumferentially.

[0013] In this design, the raised ribs increase the strength of the one-way hole wall, and the tapered hole wall contacts the valve ball line in the one-way valve.

[0014] Preferably, the throttling orifice wall extends to a throttling section, and the throttling section forms an overflow orifice.

[0015] In this design, a flow passage is incorporated to improve the throttling effect.

[0016] The beneficial effects of this invention are as follows: During braking, the brake fluid flows from the inlet to the outlet, first passing through an annular filter at the inlet into the first filtration chamber, then through a one-way valve into the second filtration chamber, and finally through a sheet filter into the brake disc, ensuring thorough filtration. When braking stops, the one-way valve closes, and the brake fluid slowly flows back through the throttling orifice, achieving a pressure-maintaining effect. Therefore, this invention has substantial features and advancements compared to existing technologies. Attached Figure Description

[0017] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a cross-sectional view of the present invention.

[0020] Figure 3 This is a top view of the present invention.

[0021] In the figure: 1. Shell; 2. Partition; 3. Second filter chamber; 4. First filter chamber; 5. Throttling orifice; 6. One-way orifice; 7. Liquid inlet orifice; 8. Liquid outlet orifice; 9. Annular filter screen; 10. Throttling section; 11. Flow passage orifice; 12. Fixing rib. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0024] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0025] See appendix Figure 1-3 In this embodiment, the dual-hole filter includes a housing 1, which is hollow and has a partition 2 inside. The partition 2 divides the internal space of the housing 1 into a first filter chamber 4 and a second filter chamber 3. The partition 2 has a through-hole throttling hole 5 and a one-way hole 6. The one-way hole 6 is equipped with a one-way valve. The housing 1 has an inlet hole 7 and an outlet hole 8. The outlet hole 8 communicates with the second filter chamber 3 and is equipped with a sheet filter screen. The inlet hole 7 communicates with the first filter chamber 4 and is spaced apart along the circumference of the housing 1. The housing 1 is injection molded. The housing 1 is formed as follows: a fixing rib 12 is provided at intervals on the wall of the first filter chamber 4; an annular filter screen 9 is located between the fixing rib 12 and the wall of the first filter chamber 4; a throttling orifice 5 is located at the center of the partition plate 2; a one-way orifice 6 is eccentrically positioned; a liquid outlet orifice 8 is equipped with a bottom cover, which is welded to the sheet filter screen; the wall of the one-way orifice 6 has a tapered shape; the wall of the one-way orifice 6 is provided with circumferentially spaced ribs; the wall of the throttling orifice 5 extends to form a throttling portion 10, which forms a flow passage 11.

[0026] In this embodiment, during braking, the brake fluid enters the first filter chamber 4 through the annular filter screen, pushing the one-way valve to open and enter the second filter chamber 3 through the one-way hole 6. It then flows to the brake caliper through the sheet filter screen. When the brake is released, the brake fluid flows back to the second filter chamber 3 through the sheet filter screen. At this time, the one-way valve closes, and the brake fluid can only flow back to the first filter chamber 4 through the throttle hole 5. The return flow of the throttle hole 5 and the flow passage hole 11 is limited, and the hydraulic pressure at the brake caliper drops slowly, which has a pressure-holding effect. The one-way valve is a mature technology. The bottom cover and the partition plate 2 form an installation space for the one-way valve. The diameter of the flow passage hole 11 is smaller than that of the throttle hole 5. The brake fluid pressure rises at the inlet of the flow passage hole 11 and drops at the outlet. The brake fluid undergoes two pressure increases and two pressure decreases. Compared with the flow passage hole 11 with only a small diameter, the hydraulic pressure change is slower, and the pressure on the throttle section 10 is relatively small, achieving two-stage throttling with a good throttling effect. A top cover is welded to one end of the housing 1 to seal the first filter chamber 4.

[0027] The above description represents the preferred embodiment of this utility model. It should be noted that the scope of protection of this utility model is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in this utility model, and these can also be considered as part of the scope of protection of this utility model.

Claims

1. A dual-pore filter, characterized in that: Includes a housing (1), the housing (1) is hollow and a partition (2) is provided inside the housing (1), the partition (2) divides the internal space of the housing (1) into a first filter chamber (4) and a second filter chamber (3), the partition (2) is provided with a through throttling hole (5) and a one-way hole (6), the one-way hole (6) is equipped with a one-way valve, the housing (1) is provided with an inlet hole (7) and an outlet hole (8), the inlet hole (7) is connected to the first filter chamber (4) and is spaced apart along the circumference of the housing (1), the outlet hole (8) is connected to the second filter chamber (3) and is equipped with a sheet filter screen, and an annular filter screen (9) is provided at the cavity wall of the first filter chamber (4).

2. The dual-pore filter as described in claim 1, characterized in that: The housing (1) is injection molded. The housing (1) includes fixing ribs (12). The fixing ribs (12) are spaced apart on the cavity wall of the first filter cavity (4). The annular filter screen (9) is located between the fixing ribs (12) and the cavity wall of the first filter cavity (4).

3. The dual-pore filter as described in claim 1, characterized in that: The throttling orifice (5) is located at the center of the partition (2), and the one-way orifice (6) is eccentrically positioned.

4. The dual-pore filter as described in claim 3, characterized in that: The liquid outlet (8) is equipped with a bottom cover, which is welded to the sheet filter.

5. The dual-pore filter as described in claim 1, characterized in that: The wall of the one-way hole (6) is tapered, and the wall of the one-way hole (6) is provided with ribs at intervals along the circumference.

6. The dual-pore filter as described in claim 1, characterized in that: The throttling orifice (5) has a throttling section (10) extending from its wall, and the throttling section (10) forms an overflow orifice (11).

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