Metering valve convenient to disassemble

Abstract

A metering valve convenient to disassemble comprises a metering valve body and an oil pump connecting device, the metering valve body is sleeved with the oil pump connecting device, a limiting step is arranged at the end of one side of the metering valve body and plays a role in limiting the oil pump connecting device, and a threaded structure used for being connected with an oil pump is arranged on the inner wall of the oil pump connecting device. The oil pump connecting device has the advantages that the oil pump connecting device is adopted, an operator only needs to carry out disassembly and assembly operation at a proper position, the problem that operation is difficult due to narrow space is solved, the dustproof protective cover is simple in structure, can be directly torn up during disassembly and replacement and is disposable, dusty and humid environments can be avoided through the dustproof protective cover, and the oil pump connecting device is convenient to use. And the two can still be easily separated after being connected for a long time.

Description

Technical Field

[0001] The utility model relates to a metering valve, in particular to a metering valve which is easy to disassemble. Background Art

[0002] The fuel metering unit is usually installed at the oil inlet of the high-pressure oil pump. Its basic function is to adjust the fuel supply according to the instructions of the engine computer (ECU). When the control coil is not energized, the fuel metering valve is in the open state, allowing the maximum flow of fuel to pass; once the coil is energized, the fuel flow is adjusted according to the current. This design ensures that it can respond quickly when it is necessary to reduce the fuel supply, such as when decelerating or driving downhill.

[0003] Since the fuel metering unit is small in size and has a small installation space, and is usually used in a high temperature and dusty environment, it is difficult to disassemble the fuel metering unit after long-term use, and violent disassembly can easily cause damage to other components. Utility Model Content

[0004] In order to solve the above problems, a metering valve which is easy to disassemble is specially made, which can be quickly disassembled and replaced after a long time.

[0005] To achieve the above-mentioned purpose, the utility model solves the problem through the following technical scheme: a metering valve that is easy to disassemble, including a metering valve body and an oil pump connecting device, the oil pump connecting device is sleeved on the outside of the metering valve body, and a limiting step is provided at one end of the metering valve body. The limiting step serves as a limit for the oil pump connecting device, and the inner wall of the oil pump connecting device is provided with a threaded structure for connecting to the oil pump.

[0006] Furthermore, a plurality of bosses are provided on the surface of the oil pump connecting device for rotating the oil pump connecting device.

[0007] Furthermore, a hexagonal boss is provided on one end surface of the oil pump connecting device.

[0008] Furthermore, the other side of the metering valve body is a cable connection end, which includes a shell cover and a cable socket. The shell cover is sleeved on the end of the metering valve body, and the cable socket and the shell cover are integrally formed.

[0009] Furthermore, a dustproof protective cover is provided on the surface of the shell cover.

[0010] Furthermore, the dustproof protective cover comprises a cover body and an elastic shrinkable belt, wherein the elastic shrinkable belt is arranged on both side edges of the cover body.

[0011] Furthermore, two slots are provided on the surface of the shell, which are used to respectively engage the elastic shrinkable band.

[0012] The utility model is beneficial in that:

[0013] 1. An oil pump connection device is used between the metering valve and the oil pump. The oil pump connection device is connected to the oil pump through a threaded structure, which can replace the traditional connection method using multiple bolts. Since the bolt connection requires at least 3 bolts, and the 3 bolts are evenly distributed around the circumference, there must be some bolts in a relatively hidden position, which makes the installation and removal of the bolts more difficult under the premise of the small installation space. With the oil pump connection device, the operator only needs to perform the disassembly and assembly operation at a suitable position, and there is no problem of difficult operation in a small space.

[0014] 2. The connection between the metering valve and the cable is a traditional connection method. If the two are connected for a long time in a hot, humid, and dusty environment, it will be difficult to separate them when disassembling them. Violent separation may cause damage to the pins in the cable socket. The dustproof protective cover has a simple structure and can be directly torn off when disassembling and replacing. It is disposable. The dustproof protective cover can avoid dusty and humid environments, making the two connected for a long time and still easy to separate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic structural diagram of a metering valve that is easy to disassemble.

[0016] Figure 2 The utility model is a schematic structural diagram of a metering valve body in a metering valve that is easy to disassemble.

[0017] Figure 3 The utility model is a schematic structural diagram of a connecting device between a metering valve and an oil pump in a metering valve that is easy to disassemble.

[0018] Figure 4 The utility model is a structural schematic diagram of an oil pump connecting device in a metering valve which is easy to disassemble.

[0019] Figure 5 The utility model is a schematic structural diagram of a dust protection cover in a metering valve which is easy to disassemble and is in a non-use state.

[0020] Figure numerals: metering valve body 1, oil pump connecting device 2, dust protection cover 3, elastic shrink band 4, limiting step 5, slot 6, shell cover 7, cable socket 8, boss 9, hexagonal boss 10, threaded structure 11. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] A metering valve that is easy to disassemble includes a metering valve body and an oil pump connecting device. The oil pump connecting device is sleeved on the outside of the metering valve body. A limiting step is provided at one end of the metering valve body. The limiting step limits the oil pump connecting device. The inner wall of the oil pump connecting device is provided with a threaded structure for connecting with the oil pump. The surface of the oil pump connecting device is provided with a plurality of bosses that play a role in rotating the oil pump connecting device. A hexagonal boss is also provided on the end surface of one side of the oil pump connecting device. The other side of the metering valve body is a cable connection end. The cable connection end includes a shell cover and a cable socket. The shell cover is sleeved on the end of the metering valve body. The cable socket and the shell cover are integrally formed. A dustproof protective cover is sleeved on the surface of the shell cover. The dustproof protective cover includes a cover body and an elastic shrink belt. The elastic shrink belt is arranged on the two side edges of the cover body. Two card slots are provided on the surface of the shell cover, which are respectively used to insert the elastic shrink belt.

[0023] The actual usage process is as follows:

[0024] When in use: the metering valve and the oil pump are connected through the oil pump connection device, and the oil pump connection is also provided with a threaded structure, which can be adapted to the oil pump connection device. The installation process is the same as the disassembly process. For the initial installation, force can be applied through the boss, and the oil pump connection device can be turned to achieve the connection between the oil pump connection device and the metering valve. If a tighter assembly is required, the hexagonal boss can be turned with a wrench. During disassembly, if the aging is not serious, the boss can be directly turned to complete the disassembly. If a jam occurs, the hexagonal boss can be turned with the help of a wrench to complete the disassembly.

[0025] The other side is connected to the cable, and the cable is plugged into the cable socket. After the connection is completed, one end of the dust cover is moved to the cable to completely wrap the connection between the cable and the cable socket.

[0026] When not in use, the dust cover is retracted toward one end of the cable socket, and both ends are respectively embedded in the card slots through elastic shrink bands. Figure 5 shown.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A metering valve that is easy to disassemble, characterized in that: It includes a metering valve body and an oil pump connecting device. The oil pump connecting device is sleeved on the outside of the metering valve body. A limiting step is provided on one end of the metering valve body. The limiting step serves to limit the oil pump connecting device. A threaded structure for connecting to the oil pump is provided on the inner wall of the oil pump connecting device.

2. A metering valve that is easy to disassemble according to claim 1, characterized in that: A plurality of bosses are arranged on the surface of the oil pump connecting device for rotating the oil pump connecting device.

3. A metering valve that is easy to disassemble according to claim 2, characterized in that: A hexagonal boss is also provided on one end surface of the oil pump connecting device.

4. The easily disassembled metering valve according to claim 3, characterized in that: The other side of the metering valve body is a cable connection end, which includes a shell cover and a cable socket. The shell cover is sleeved on the end of the metering valve body, and the cable socket and the shell cover are integrally formed.

5. The easily disassembled metering valve according to claim 4, characterized in that: The shell surface is covered with a dustproof protective cover.

6. The easily disassembled metering valve according to claim 5, characterized in that: The dustproof protective cover comprises a cover body and elastic shrinkable belts, wherein the elastic shrinkable belts are arranged on the two side edges of the cover body.

7. The easily disassembled metering valve according to claim 6, characterized in that: The shell cover surface is provided with two slots, which are used for inserting the elastic shrink band respectively.

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