A gasoline pump having physically isolated carbon brush wicks

Abstract

The utility model relates to a gasoline pump with physically isolated carbon brush brush braid, the carbon brush holder top surface integrative two independent enclosing wall structure, respectively from the circumference completely completely surrounded two current transmission components' brush braid area, when the pump cover and carbon brush holder assembly in place, the pump cover bottom surface presses down to the enclosing wall structure upper end surface, forms two independent closed isolation chamber, two groups of current transmission components are completely separated in space, the oil port on the carbon brush holder is located the outside of isolation chamber. The scheme can avoid that the brush braid produces ionization reaction in the oil and leads to the corruption of carbon brush.

Description

Technical Field

[0001] This utility model relates to the field of gasoline pump technology, and in particular to a gasoline pump that physically isolates the carbon brush braid. Background Technology

[0002] like Figure 1 As shown, current diesel pumps lack an insulating structure between the positive and negative carbon brush braids on the carbon brush holder. When the oil contains high concentrations of acids or alkalis such as methanol, ethanol, or sulfuric acid, ionization reactions are more likely to occur, causing corrosion of the carbon brushes and braids, leading to product malfunction or performance failure. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this invention is to provide a gasoline pump that physically isolates the carbon brush braids, thereby separating the positive and negative brush braids through the cooperation of the isolation cover and the pump cover.

[0004] A gasoline pump that physically isolates carbon brush braids includes a carbon brush holder and a pump cover connected thereto. The carbon brush holder has a pair of carbon brush mounting holes, and carbon brushes are installed in the carbon brush mounting holes. The carbon brush holder also has a pair of power connectors corresponding to the carbon brushes, and the power connectors are connected to the carbon brushes through brush braids. A carbon brush mounting hole, the carbon brush therein, a power connector connected to the carbon brush, and the brush braids connecting the two constitute a current transmission assembly. The top surface of the carbon brush holder is integrally formed with two independent enclosure structures, which completely surround the brush braid areas of the two current transmission assemblies from the circumference. When the pump cover and the carbon brush holder are assembled in place, the bottom surface of the pump cover is pressed down to the upper end surface of the enclosure structure, forming two independent closed isolation cavities, which completely separate the two sets of current transmission assemblies in space. The fuel inlet on the carbon brush holder is located outside the isolation cavity.

[0005] Preferably, the two sets of current transmission components are symmetrically arranged, and an isolation groove is formed between adjacent enclosure structures at the center line of the top of the carbon brush holder; the bottom of the pump cover is provided with a matching isolation plate corresponding to the isolation groove.

[0006] Preferably, the oil port is located in the isolation groove, and a positioning seat is formed between adjacent isolation covers corresponding to the oil port. The side wall of the positioning seat is provided with a first opening groove arranged longitudinally. The pump cover is provided with a positioning post corresponding to the positioning seat, and the center of the positioning post is provided with an opening that communicates with the oil hole. A guide is provided on the outside of the positioning post corresponding to the first opening groove.

[0007] Preferably, the bottom of the pump cover is provided with a sealing seat corresponding to the carbon brush mounting hole, and the sealing seat is connected to the carbon brush mounting hole to at least close the top opening of the carbon brush mounting hole.

[0008] Preferably, it also includes a top cover, which is disposed on the carbon brush holder and at least closes the top opening of the carbon brush mounting hole.

[0009] Preferably, one end of the top cover is provided with a longitudinally arranged connecting arm, and the enclosure structure is provided with a longitudinally arranged connecting groove corresponding to the connecting arm, wherein the connecting arm and the connecting groove are inserted into each other.

[0010] Preferably, the connecting arms of two adjacent top covers are integrated into one unit.

[0011] This application adopts the above-mentioned scheme, which avoids the carbon brushes from ionizing in the oil by setting physical isolation between the positive and negative electrode braids and the oil port. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the top structure of a carbon brush holder in the prior art; Figure 2 This is a schematic diagram of the structure of this application; Figure 3 This is a schematic diagram of the bottom structure of the pump cover; Figure 4 This is a schematic diagram of the structure at the top of the carbon brush holder; Figure 5 A schematic diagram of the isolation structure formed by the pump cover and the carbon brush holder; Figure 6 A schematic diagram of the assembly structure for installing a top cover on the carbon brush holder (brush braids are not shown).

[0013] Figure label: 1. Carbon brush holder, 2. Pump cover, 21. Isolation plate, 22. Positioning post, 24. Sealing seat, 3. Enclosure structure, 31. Isolation groove, 32. Positioning seat, 4. Carbon brush mounting hole, 5. Power plug, 6. Brush braid, 7. Oil port, 8. Top cover, 81. Connecting arm. Detailed Implementation

[0014] The embodiments of this utility model are described in detail below.

[0015] This embodiment provides a gasoline pump that physically isolates the carbon brush braid 6, such as Figure 2-5 As shown, the device includes a brush holder 1 and a pump cover 2 connected thereto. The brush holder 1 has a pair of symmetrically arranged brush mounting holes 4 on its top, each containing a carbon brush. The brush holder 1 also has a pair of power connectors 5, each corresponding to a carbon brush. The power connectors 5 are located outside the brush mounting holes 4, and are electrically connected to their corresponding carbon brushes via metal braids 6. For ease of description, in this embodiment, a brush mounting hole 4, the carbon brush therein, a power connector 5 connected to the carbon brush, and the braids 6 connecting the two constitute a current transmission assembly; that is, the brush holder 1 has two independent current transmission assemblies.

[0016] like Figure 4As shown, the top surface of the carbon brush holder 1 has two independent enclosure structures 3 integrally formed, completely surrounding the two current transmission components from the circumference. When the pump cover 2 and the carbon brush holder 1 are assembled, the bottom surface of the pump cover 2 presses down onto the upper surface of the enclosure structure 3, creating two independent, closed isolation cavities within the space enclosed by the two enclosure structures 3. This completely isolates the two sets of current transmission components in space. Simultaneously, the oil port 7 on the carbon brush holder 1 is located outside the two enclosure structures 3, thus isolating the brush braid 6 and carbon brush from the oil port 7 on the carbon brush holder 1, preventing ionization reactions in the oil.

[0017] Combination Figure 3-5 In this embodiment, the two sets of current transmission components are arranged in a centrally symmetrical manner, and the adjacent enclosure structure 3 forms an isolation groove 31 at the top center of the carbon brush holder 1. An isolation plate 21 is provided at the corresponding position at the bottom of the pump cover 2. During assembly, the isolation plate 21 is inserted into the isolation groove 31 to enhance the physical isolation between the positive and negative electrode areas.

[0018] The oil port 7 is located within the isolation groove 31. The surrounding wall structures 3 on both sides of the isolation groove 31 form a positioning seat 32 around the oil port 7, and the side wall has a longitudinally arranged first opening groove. The bottom of the pump cover 2 is provided with a positioning post 22 corresponding to the positioning seat 32. The positioning post 22 has a central axial opening communicating with the oil port 7, and its exterior is provided with a guide rib that slides in cooperation with the first opening groove. The positioning post 22 and the positioning seat 32 are provided in a guiding cooperation to facilitate the positioning and assembly of the pump cover 2 and the carbon brush holder 1.

[0019] like Figure 3 As shown, the bottom surface of the pump cover 2 extends downward to the sealing seat 24 corresponding to the position of each carbon brush mounting hole 4. After assembly, the sealing seat 24 is pressed into the top opening of the carbon brush mounting hole 4 to achieve top sealing of the hole.

[0020] like Figure 6 As shown, in other embodiments, a different top sealing structure for the carbon brush mounting hole 4 is adopted. A top cover 8 is added to the top of the carbon brush holder 1, and its coverage area at least closes the top opening of the carbon brush mounting hole 4. A longitudinal connecting arm 81 extends from one end of the top cover 8, and a longitudinal connecting groove is opened at the corresponding position on the side wall of the isolation cover. The top cover 8 is positioned and installed through a plug-in connection. To improve assembly efficiency, the connecting arms 81 of two adjacent top covers 8 are designed as a single unit, allowing for simultaneous fixing of two sets of top covers 8 in a single press-fit, simplifying the installation process. When using... Figure 6 When the upper cover 8 structure is shown, the bottom of the pump cover 2 does not need to be additionally equipped with a sealing seat 24.

[0021] In the above solution, by cooperating with the pump cover 2, a physical isolation barrier is established between the positive and negative brush braids 6, separating the brush braids 6 from the oil, fundamentally eliminating the problem of carbon brush electrochemical corrosion caused by the ionization of the brush braids 6, and significantly extending the life of the gasoline pump brush system.

[0022] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A gasoline pump that physically isolates carbon brush braids, comprising a carbon brush holder and a pump cover connected thereto, the carbon brush holder having a pair of carbon brush mounting holes, each containing a carbon brush; the carbon brush holder also having a pair of power connectors corresponding to the carbon brushes, the power connectors being connected to the carbon brushes via brush braids; characterized in that... A carbon brush mounting hole, a carbon brush therein, a power connector connected to the carbon brush, and a brush braid connecting the two constitute a current transmission assembly; the top surface of the carbon brush holder is integrally formed with two independent enclosure structures, which completely surround the brush braid areas of the two current transmission assemblies from the circumference; when the pump cover and the carbon brush holder are assembled in place, the bottom surface of the pump cover is pressed down onto the upper end surface of the enclosure structure, forming two independent closed isolation cavities, which completely separate the two sets of current transmission assemblies in space; the oil port on the carbon brush holder is located outside the isolation cavity.

2. The gasoline pump with physical isolation of carbon brush braids according to claim 1, characterized in that, Two sets of current transmission components are symmetrically arranged, and an isolation groove is formed between adjacent enclosure structures at the center line of the top of the carbon brush holder; the bottom of the pump cover is provided with a matching isolation plate corresponding to the isolation groove.

3. A gasoline pump with physical isolation of carbon brush braids according to claim 2, characterized in that, The oil port is located in the isolation groove, and a positioning seat is formed between adjacent isolation covers corresponding to the oil port. The side wall of the positioning seat is provided with a first opening groove arranged longitudinally. The pump cover is provided with a positioning post corresponding to the positioning seat, and the middle of the positioning post is provided with an opening that communicates with the oil hole. A guide is provided on the outside of the positioning post corresponding to the first opening groove.

4. A gasoline pump with physical isolation of carbon brush braids according to claim 1, characterized in that, The bottom of the pump cover is provided with a sealing seat corresponding to the carbon brush mounting hole, and the sealing seat is connected to the carbon brush mounting hole to at least close the top opening of the carbon brush mounting hole.

5. A gasoline pump with physical isolation of carbon brush braids according to claim 1 or 4, characterized in that, It also includes a top cover, which is disposed on the carbon brush holder and at least closes the top opening of the carbon brush mounting hole.

6. A gasoline pump with physical isolation of carbon brush braids according to claim 5, characterized in that, The top cover has a longitudinally arranged connecting arm at one end, and the enclosure structure has a longitudinally arranged connecting groove corresponding to the connecting arm, and the connecting arm and the connecting groove are inserted into each other.

7. A gasoline pump with physical isolation of carbon brush braids according to claim 6, characterized in that, The connecting arms of the two adjacent top covers are integrated into one unit.

Images