A filter bypass valve structure providing electrical signal

Abstract

The present invention provides a filter bypass valve structure providing an electrical signal, comprising a valve body, a cavity is provided in the valve body, a first conductor is provided at the upper end of the cavity, and the upper end of the first conductor passes through the valve body; a valve is provided at the lower end of the cavity, a liquid inlet and a liquid outlet are provided on the side wall of the cavity corresponding to the lower end of the valve, the valve seal is arranged on the liquid inlet and the liquid outlet, a return spring is provided in the cavity, the upper end of the return spring is fixedly arranged, the lower end of the return spring abuts on the valve, a second conductor close to the first conductor is provided at the upper end of the valve, a third conductor is provided on the valve body, and the third conductor is electrically connected to the second conductor. Compared with conventional designs, the valve provided in the bypass valve can transmit an electrical signal after opening, and the filter life expiration signal is alarmed to the console, reminding the user to replace the filter in time to protect the engine from wear; the present invention has a simple structure and is easy to assemble.

Description

Technical Field

[0001] The invention relates to a bypass valve, in particular to a filter bypass valve structure providing an electrical signal. Background Art

[0002] In the oil supply system of the engine lubrication system, the oil filter bypass valve is used for: 1. When the engine is cold started, the oil cannot pass through the filter paper to reach the various lubrication points of the engine in time due to the low oil temperature and high viscosity. At this time, the bypass valve is opened to ensure that the oil passes through the oil filter in time to lubricate the engine; 2. When the oil filter reaches the end of its life and becomes clogged, the oil cannot pass through the filter paper to reach the various lubrication points of the engine in time. At this time, the bypass valve is opened to ensure that the oil passes through the oil filter in time to lubricate the engine.

[0003] Currently known oil filter bypass valves are generally not provided with a device that can provide an electrical signal. The main disadvantage of this solution is that when the oil filter reaches the end of its life, the engine user cannot discover it in time, resulting in unfiltered oil entering the lubrication system, causing premature wear of the engine and losing its function of protecting the engine. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a filter bypass valve structure that provides an electrical signal.

[0005] A filter bypass valve structure for providing an electrical signal, characterized in that it includes a valve body, a cavity is provided in the valve body, a first conductor is provided at the upper end of the cavity, and the upper end of the first conductor passes through the valve body; a valve is provided at the lower end of the cavity, a liquid inlet and a liquid outlet are opened on the side wall of the cavity at positions corresponding to the lower end of the valve, the valve seal is arranged on the liquid inlet and the liquid outlet, a return spring is provided in the cavity, the upper end of the return spring is fixedly arranged, the lower end of the return spring abuts against the valve, a second conductor close to the first conductor is provided at the upper end of the valve, a third conductor is provided on the valve body, and the third conductor is electrically connected to the second conductor.

[0006] The principle of the present invention is as follows: the first conductor is connected to the positive electrode of the signal line, the third conductor is connected to the negative electrode of the signal line, and the present invention is installed on the filter at the same time, the liquid inlet is communicated with the bypass port of the filter, and the liquid outlet is communicated with the bypass port of the engine. When the filter is clogged due to the expiration of its service life, the internal pressure of the filter increases, thereby pushing the valve of the bypass valve to open the valve, so that the liquid inlet and the liquid outlet are communicated. In addition, when the valve is opened, the second conductor is in contact with the first conductor, so that the signal line forms a loop, thereby triggering an alarm signal to remind the user to replace the filter in time.

[0007] Further, the cavity is a strip-shaped cavity, the lower end of the strip-shaped cavity is opened, the opening is the liquid inlet, the liquid outlet is located at the open end of the strip-shaped cavity, and the valve is sealed and slidably matched with the strip-shaped cavity. The structure is simple and easy to process.

[0008] Further, the valve body and the valve are both conductors, the first conductor is insulated from the valve body, the third conductor is fixedly sleeved on the valve body, the valve and the third conductor are both in contact with the valve body for electrical conduction, the upper end of the return spring abuts against the first conductor, and an insulating gasket is provided between the return spring and the first conductor. The structure is simple and easy to assemble.

[0009] Further, a strip-shaped spring cavity is provided in the valve, the lower end of the second conductor is slidably arranged in the spring cavity and contacts the valve for electrical conduction, a compression spring is provided in the spring cavity, the lower end of the compression spring is fixedly arranged, and the upper end of the compression spring abuts against the second conductor. After the second conductor contacts the first conductor, the valve still has a certain amount of movement, so as to achieve early warning and increase the warning time.

[0010] Further, the upper end and the lower end of the first conductor are both clamped with insulating gaskets, the first conductor and the valve body are gap-matched, a rubber gasket is provided between the first conductor and the valve body, and the insulating gasket is stopped on the valve body, thereby achieving the insulation setting of the first conductor and the valve body.

[0011] The beneficial effects of the present invention are as follows: compared with conventional designs, the bypass valve can transmit an electrical signal after opening, and send an alarm of the filter life expiration signal to the console, reminding the user to replace the filter in time to protect the engine from wear; the present invention has a simple structure and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] In the figure, 1, first conductor; 2, insulating gasket; 3, valve body; 4, second conductor; 5, compression spring; 6, rubber pad; 7, return spring; 8, third conductor; 9, valve; 10, screw plug; 11, retaining spring; 12, cavity; 13, liquid outlet; 14, liquid inlet. DETAILED DESCRIPTION

[0014] It should be noted that the terms such as left, center, right, top, bottom, etc. in the examples of the present invention are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0015] A filter bypass valve structure providing an electrical signal, such as Figure 1 As shown, it includes a valve body 3, a cavity 12 is provided in the valve body 3, a first conductor 1 is provided at the upper end of the cavity 12, and the upper end of the first conductor 1 passes through the valve body 3; a valve 9 is provided at the lower end of the cavity 12, and a liquid inlet 14 and a liquid outlet 13 are opened on the side wall of the cavity 12 at a position corresponding to the lower end of the valve 9, and the valve 9 is sealed on the liquid inlet 14 and the liquid outlet 13, a return spring 7 is provided in the cavity 12, the upper end of the return spring 7 is fixedly arranged, and the lower end of the return spring 7 abuts on the valve 9, a second conductor 4 close to the first conductor 1 is provided at the upper end of the valve 9, and a third conductor 8 is provided on the valve body 3, and the third conductor 8 is electrically connected to the second conductor 4.

[0016] The cavity 12 is a strip-shaped cavity, the lower end of which is open, and the opening is the liquid inlet 14. The liquid outlet 13 is located at the open end of the strip-shaped cavity, and the valve 9 is sealed and slidably matched with the strip-shaped cavity. The valve body 3 and the valve 9 are both conductors, and the first conductor 1 is insulated from the valve body 3; the third conductor 8 is fixedly sleeved on the valve body 3, and the valve 9 and the third conductor 8 are both in contact with the valve body 3 for electrical conduction. The upper end of the return spring 7 is in contact with the first conductor 1, and an insulating gasket 2 is provided between the return spring 7 and the first conductor 1. A strip-shaped spring cavity is provided in the valve 9, the lower end of the second conductor 4 is slidably disposed in the spring cavity and contacts the valve 9 for electrical conduction, a compression spring 5 is provided in the spring cavity, the lower end of the compression spring 5 is fixedly disposed, specifically, an opening is provided at the lower end of the spring cavity, a threaded plug 10 is threadedly fitted at the opening, the lower end of the compression spring 5 abuts against the thread plug 10, and the upper end of the compression spring 5 abuts against the second conductor 4; in addition, to prevent the valve 9 from popping out of the cavity 12, a retaining spring 11 is clamped on the side wall of the cavity 12 at the outer side of the lower end of the valve 9. The upper and lower ends of the first conductor 1 are both clamped with insulating gaskets 2, the first conductor 1 is gap-fitted with the valve body 3, a rubber gasket 6 is provided between the first conductor 1 and the valve body, and the insulating gasket 2 is stopped on the valve body 3.

[0017] The present invention is arranged in the filter oil circuit. When the filter element expires and is blocked, the pressure of the lubricating oil causes the valve to open, and the lubricating oil enters the engine through the liquid inlet and outlet of the present invention and the oil circuit in sequence, thereby avoiding dry friction of the engine and protecting the engine. At the same time, the valve will drive the second conductor to contact the first conductor, thereby connecting the positive and negative poles of the signal circuit and providing an electrical signal, reminding the user to replace the filter in time to protect the engine.

[0018] Compared with conventional designs, the bypass valve is provided with an electrical signal transmission device when the valve is opened, and the filter life expiration signal is alarmed to the console, reminding the user to replace the filter in time to protect the engine from wear. In addition, the arrangement of the compression spring allows the valve opening to be increased after the second conductor contacts the first conductor, so that the present invention can provide early warning, increase the reliability of the present invention, and reserve sufficient time for filter replacement.

[0019] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A filter bypass valve structure providing an electrical signal, characterized in that: The valve body comprises a valve body, a cavity is arranged in the valve body, a first conductor is arranged at the upper end of the cavity, and the upper end of the first conductor passes through the valve body; a valve is arranged at the lower end of the cavity, a liquid inlet and a liquid outlet are opened on the side wall of the cavity at positions corresponding to the lower end of the valve, the valve is sealed on the liquid inlet and the liquid outlet, a return spring is arranged in the cavity, the upper end of the return spring is fixedly arranged, the lower end of the return spring abuts against the valve, a second conductor close to the first conductor is arranged at the upper end of the valve, a third conductor is arranged on the valve body, and the third conductor is electrically connected to the second conductor; the cavity is a strip-shaped cavity, the lower end of the strip-shaped cavity is opened, and the opening is the inlet Liquid port, the liquid outlet is located at the open end of the strip cavity, the valve is sealed and slidably matched with the strip cavity; the valve body and the valve are both conductors, and the first conductor is insulated from the valve body; the third conductor is fixedly sleeved on the valve body, the valve and the third conductor are both in contact with the valve body for electrical conduction, the upper end of the return spring abuts on the first conductor, and an insulating gasket is provided between the return spring and the first conductor; a strip-shaped spring cavity is provided in the valve, the lower end of the second conductor is slidably provided in the spring cavity and in contact with the valve for electrical conduction, a compression spring is provided in the spring cavity, the lower end of the compression spring is fixedly provided, and the upper end of the compression spring abuts on the second conductor.

2. A filter bypass valve structure providing an electrical signal according to claim 1, characterized in that: The upper end and the lower end of the first conductor are both clamped with insulating gaskets, the first conductor is gap-matched with the valve body, a rubber gasket is provided between the first conductor and the valve body, and the insulating gasket is stopped on the valve body.

Images