CN2036529U - Liquid level autocontrol valve for filling liquid for vehicle - Google Patents

Abstract

The utility model discloses a liquid level autocontrol valve for filling the liquid for a vehicle. The autocontrol is realized by the utilization of the principle that the negative-pressure is generated in a part, when the liquid flows, and a concave zone is arranged on the lower part of a valve flap, in order to generate the negative-pressure in the concave zone. An outer vent pipe communicated with the external is arranged in the negative-pressure zone, when the passage of the outer vent pipe is clear, the internal pressure of the valve equals the ambient pressure, and the negative-pressure can not be generated. The negative-pressure is generated, when the outer vent pipe is clogged, a control linkage is driven, and the valve gate is automatically closed, under the action of a spring; besides, the automatic control of the filling is realized.

Description

Liquid level autocontrol valve for filling liquid for vehicle

The invention belongs to filling liquid liquid level automatic controlling valve, especially belong to Vehicular liquid filling liquid level automatic controlling valve.

At oil, chemical industry, production department and transport systems such as brewage, to only tank level control in the filling liquid process, main at present artificial instrument or the micro electronmechanical sensor-based system control method of adopting, the liquid spill error takes place often, cause the environmental pollution and the wasting of resources, even cause grave accident, and complicated operation, the operating costs height.

The objective of the invention is to overcome the defective of prior art, a kind of Vehicular liquid filling liquid level internally piloted valve that utilizes the air-flow differential technology is provided, as long as the liquid level in the liquid tank reaches the requirement height of can, valve is with regard to SELF CL, and action accurately and reliably, and is simple to operate.

The said Vehicular liquid filling liquid level of the present invention internally piloted valve, its principle of work is to utilize flowing liquid, forms negative pressure in the part, at this zone of negative pressure of valve flap bottom recess formation, communicate with ambient atmosphere by aeration pipe outside, the pressure of this zone of negative pressure is equated with bar pressure.The valve air cavity inboard of control cock also communicates with outside atmosphere.Air cavity barrier film control pin is embedded in the Baltimore groove of controlling link under the effect of cone-shaped spring, makes flap be in the open position.Continuous rising along with filling liquid level, when liquid level reaches and block outer air vent, the valve air cavity outside is isolated with outside atmosphere, under the effect of zone of negative pressure, make air cavity barrier film control pin separate with controlling link, flap is closed rapidly under the effect of spring, thereby fluid passage is closed, and pouring process is finished.Prominent feature is that flap bottom zone of negative pressure is when outer air vent can not form air pressure, but the valve normal infusion, owing to outer air vent when forming negative pressure, negative pressure will drive the control of air cavity barrier film and sell the controlling link can Automatic Program of being controlled and finish.

Use the said Vehicular liquid filling liquid level of the present invention internally piloted valve, by the filling liquid level by-pass valve control, can reach accurately and reliably, the automatically controlled purpose.

Accompanying drawing is the scheme drawing that meets theme of the present invention.

Referring now to accompanying drawing, be described as follows in conjunction with the embodiments:

At first the lifting mode oil filling riser is connected on the inlet (8), 50 to 150 millimeters of its bores, according to specifically selecting for use, the bore of drainage pipe (11) should be corresponding with the bore of inlet.Drainage pipe (11) is inserted in the can jar.Mention handle (12), promptly drive controlling link (9) simultaneously and connect vent rod (3), flap (2) is risen open.Air cavity barrier film control pin (6) in the groove of control of access link rod (9) bottom, locates and normal opening flap (2) under the effect of cone-shaped spring (7) simultaneously.Liquid flows in the can jar by the passage in the valve body (1).Because flowing of liquid, recess has produced negative pressure in flap (2) bottom, communicate with outer air vent (10) by pore and the pore in the valve gap (5) that connects in the vent rod (3), the length of outer air vent (10) is to select according to the height of liquid level for liquid.Outer air vent (10) can make the negative pressure and the extraneous natural pressure balance of flap (2) bottom recess.When filling liquid arrives predetermined altitude, liquid is blocked the admission port of outer air vent (10), make the recess of flap (2) bottom can not get tonifying Qi, because the effect of negative pressure, will pass through the pore in the valve gap (5), the gas in the valve air cavity outside is sucked, make air cavity barrier film control pin (6) to two lateral movements, the recess that breaks away from controlling link (9), controlling link (9) and connection vent rod (3) are under the effect of spring (4), flap (2) is closed, realized stopping automatically of filling liquid, expendable finishes.

Claims (2)

1, a kind of Vehicular liquid filling liquid level internally piloted valve, mainly by valve body, flap connects vent rod, spring, valve gap, air cavity barrier film control pin, cone-shaped spring, outer air vent and handle are formed, and it is characterized in that the negative pressure that is produced by the flap bottom drives controlling link automatic guidance filling liquid amount.

2, as the said Vehicular liquid filling liquid level of claim 1 internally piloted valve, it is characterized in that importing and exporting bore is 50 to 150 millimeters.

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