Carbon brush mechanism of diesel pump

Abstract

The utility model discloses a carbon brush mechanism of a diesel pump, which comprises a carbon brush holder, the carbon brush holder is provided with a pair of carbon brush mounting holes along the longitudinal direction, a carbon brush and a spring are sequentially arranged in the carbon brush mounting holes from bottom to top in a matching manner, the carbon brush holder is provided with a sealing plug at the top of the carbon brush mounting holes, and the middle part of the sealing plug is provided with a wire hole penetrating up and down. And a carbon brush wire of the carbon brush sequentially passes through the center of the spring and the wire hole and then extends above the carbon brush holder. According to the utility model, the carbon brush holder is redesigned, and a channel for wiring of the carbon brush wire is formed in the center of the longitudinally arranged carbon brush mounting hole, so that the carbon brush wire is built in and does not run from the outside of the pump body, and the problem that the carbon brush wire is broken due to corrosion of the exposed carbon brush wire by diesel oil is solved; moreover, as the gap between the carbon brush and the carbon brush mounting hole is very small, the diesel oil is not easy to flow above the carbon brush from bottom to top when the diesel oil pump works, so that the contact between the carbon brush wire and the diesel oil can be avoided, and the service life of the carbon brush wire is prolonged.

Description

Technical Field

[0001] The utility model relates to a carbon brush mechanism of a diesel pump. Background Art

[0002] At present, the carbon brush holes on the carbon brush holder of conventional diesel pumps are arranged horizontally, and the carbon brush wires connected to the carbon brushes are usually routed from the outside of the pump body. Such a structure will cause the carbon brush wires to break easily. The main reason is that the diesel pump has a large water content in diesel, and the acidic components in the oil will corrode the carbon brush wires, and the electrolysis will cause the carbon brush wires to break when the diesel pump is working. Utility Model Content

[0003] In view of the above problems, the utility model provides a carbon brush mechanism for a diesel pump, which effectively solves the problems pointed out in the background technology.

[0004] The technical solution adopted by the utility model is:

[0005] A carbon brush mechanism for a diesel pump comprises a carbon brush holder, wherein the carbon brush holder is provided with a pair of carbon brush mounting holes in the longitudinal direction, wherein carbon brushes and springs are matched and arranged in sequence from bottom to top in the carbon brush mounting holes, wherein the carbon brush holder is provided with a sealing plug at the top of the carbon brush mounting hole, wherein the bottom end of the spring abuts against the carbon brush, and the top end abuts against the sealing plug, wherein a wire hole penetrating from top to bottom is provided in the middle of the sealing plug, and the carbon brush wire of the carbon brush passes through the center of the spring and the wire hole in sequence and then extends to the top of the carbon brush holder.

[0006] Preferably, the carbon brush holder is provided with a sealing plug mounting groove at the top edge of the carbon brush mounting hole, and the sealing plug mounting groove matches the sealing plug.

[0007] Preferably, an annular sealing groove is provided on the side of the sealing plug, and a sealing ring is matched in the sealing groove.

[0008] The utility model redesigns the carbon brush holder, and forms a channel for routing the carbon brush wire in the center of the longitudinally arranged carbon brush mounting hole, so that the carbon brush wire is built-in and the carbon brush wire is not routed from the outside of the pump body, thereby solving the problem of the carbon brush wire being broken due to corrosion by diesel fuel on the exposed carbon brush wire, and because the gap between the carbon brush and the carbon brush mounting hole is very small, diesel fuel is not easy to flow from bottom to top onto the top of the carbon brush when the diesel pump is working, thus avoiding the contact between the carbon brush wire and diesel fuel, thereby extending the service life of the carbon brush wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a longitudinal cross-sectional structural schematic diagram of the carbon brush mechanism;

[0010] Figure 2 It is a schematic diagram of the top structure of the carbon brush holder;

[0011] Figure 3 It is a schematic diagram of the bottom structure of the carbon brush holder;

[0012] Figure 4 This is a structural diagram of the carbon brush holder installed on the diesel pump. DETAILED DESCRIPTION

[0013] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0014] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0015] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0017] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0019] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0020] like Figure 1-3 As shown, a carbon brush mechanism of a diesel pump includes a carbon brush holder 3, wherein the carbon brush holder 3 is provided with a pair of carbon brush mounting holes 4 along the longitudinal direction, wherein the carbon brush 5 and the spring 6 are sequentially matched and arranged in the carbon brush mounting holes 4 from bottom to top, wherein the carbon brush holder 3 is provided with a sealing plug 7 at the top of the carbon brush mounting hole 4, wherein the bottom end of the spring 6 abuts against the carbon brush 5, and the top end abuts against the sealing plug 7, wherein the middle portion of the sealing plug 7 is provided with a wire hole 8 which passes through from top to bottom, and the carbon brush wire 9 of the carbon brush 5 sequentially passes through the center of the spring 6 and the wire hole 8 and then extends to the top of the carbon brush holder 3.

[0021] The carbon brush holder 3 is provided with a sealing plug mounting groove 10 at the top of the carbon brush mounting hole 4 , and the sealing plug mounting groove 10 matches the sealing plug 7 .

[0022] An annular sealing groove 11 is formed on the side of the sealing plug 7 , and a sealing ring 12 is matched in the sealing groove 11 .

[0023] The utility model installs the carbon brush 5 by opening a carbon brush mounting hole 4 at the top of the carbon brush holder 3, so that the carbon brush wire 9 is directly routed from the top of the carbon brush mounting hole 4, avoiding the carbon brush wire 9 from being routed from the outside of the pump body, thereby solving the problem of the carbon brush wire 9 exposed to the outside being corroded by diesel and causing the carbon brush wire to break, and because the gap between the carbon brush 5 and the carbon brush mounting hole 4 is very small, it is not easy for diesel to flow from bottom to top to the top of the carbon brush 5 when the diesel pump is working, thus avoiding the contact between the carbon brush wire and the diesel, extending the service life of the carbon brush wire, thus avoiding the corrosion of the carbon brush wire 9 by diesel.

[0024] like Figure 4The schematic diagram of the structure of the present invention installed in a diesel pump is illustrated, and two carbon brushes 5 are against the commutator 2 of the diesel pump. The structure of the entire diesel pump is as follows: A diesel pump with a corrosion-resistant structure includes a diesel pump body 1, a carbon brush holder 3 is provided above the commutator 2 of the diesel pump body 1, and the carbon brush holder 3 is provided with a pair of carbon brush mounting holes 4 directly above the commutator 2. The carbon brush mounting holes 4 are sequentially matched with carbon brushes 5 and springs 6 from bottom to top, and the carbon brush holder 3 is provided with a sealing plug 7 at the top of the carbon brush mounting hole 4. The bottom end of the spring 6 is against the carbon brush 5, and the top end is against the sealing plug 7. The middle part of the sealing plug 7 is provided with a wire hole 8 that runs through the top and the bottom. The carbon brush wire 9 of the carbon brush 5 passes through the center of the spring 6 and the wire hole 8 in sequence and then extends to the top of the carbon brush holder 3. The carbon brush holder 3 is provided with a sealing plug mounting groove 10 at the top of the carbon brush mounting hole 4, and the sealing plug mounting groove 10 matches the sealing plug 7. An annular sealing groove 11 is provided on the side of the plug 7, and a sealing ring 12 is matched in the sealing groove 11. The eccentric pump 13 of the diesel pump body 1 includes a pump body 131, a runner 132 and a roller 133. A circle of annular bosses 1311 is fixed on the top of the pump body 13, and a positioning platform 1312 is formed between the annular boss 1311 and the outer side of the pump body 131. A plurality of guide members 1313 are fixed to the outer side of the annular boss 1311. During installation, the eccentric pump 13 can be accurately installed by simply inserting it from bottom to top. During insertion, the guide members 1313 facilitate the smooth insertion of the eccentric pump 13, and the positioning platform 1312 accurately positions the insertion distance of the eccentric pump 13. Compared with conventional pump bodies, the ceramic plate is eliminated and no screws are required for fastening, which makes installation easier and greatly improves efficiency. At the same time, the pump body can be integrally formed of plastic, which can solve the problem of rust and jamming of the pump core.

[0025] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A carbon brush mechanism for a diesel pump, characterized in that: The invention comprises a carbon brush holder (3), wherein the carbon brush holder (3) is provided with a pair of carbon brush mounting holes (4) in the longitudinal direction, wherein carbon brushes (5) and springs (6) are sequentially matched and arranged in the carbon brush mounting holes (4) from bottom to top, wherein the carbon brush holder (3) is provided with a sealing plug (7) at the top of the carbon brush mounting hole (4), wherein the bottom end of the spring (6) abuts against the carbon brush (5), and the top end abuts against the sealing plug (7), wherein the middle part of the sealing plug (7) is provided with a wire hole (8) penetrating from top to bottom, and the carbon brush wire (9) of the carbon brush (5) sequentially passes through the center of the spring (6) and the wire hole (8) and then extends to the top of the carbon brush holder (3).

2. A carbon brush mechanism for a diesel pump according to claim 1, characterized in that: The carbon brush holder (3) is provided with a sealing plug installation groove (10) at the top of the carbon brush installation hole (4), and the sealing plug installation groove (10) matches the sealing plug (7).

3. A carbon brush mechanism for a diesel pump according to claim 2, characterized in that: An annular sealing groove (11) is provided on the side of the sealing plug (7), and a sealing ring (12) is matched in the sealing groove (11).

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