CN1862065A - Safety for selectively liquid specific gravity - Google Patents

Abstract

A safety valve of selecting liquid specific gravity includes a casing, an inlet and an outlet. In the casing there is a liquid-intaking cavity and a liquid-discharging cavity separately by a baffle. In the liquid-intaking cavity are mounted a float device and a valve-control device and on the top of the liquid-intaking cavity is mounted an exhaust valve device. A diaphragm valve is mounted in the liquid-discharging cavity. According to the liquid specific gravity, the float in the float device can rise a certain position by the undulatory motion of the float device in the liquid-intaking cavity, and float position is used for controlling liquid-intaking and liquid-discharging switch valves to realize passing and stopping of the liquid in the safety valve controlled by selecting liquid specific gravity.

Description

Select tintometric safety valve

Technical field

The invention belongs to the liquid valve series products, particularly be used for the safety valve of unloading line in vehicle-mounted oil tank and the past oil storage tank.

Background technique

At present, be used for Unloading Device in the light oil tank wagon, form by oil suction, emptying, equilibrium valve etc. as Chinese patent publication number 2139079 " pipe Unloading Device in the light oil rail tanker ".This device mainly drops to minimum to " vapour lock ", has reduced oil loss, has protected environment.But increase along with social oil mass, send oil also increasing toward the gas station, often be at the emptying at night, and be to use gasoline and diesel oil to provide and deliver with car, operator often cause confusion easily, cause emptying to storing inconsistent phenomenon in the oil tank, unload to the gasoline storage tank, so that cause unnecessary economic loss as gasoline being unloaded to the diesel oil storage tank or diesel oil.Even it is oil-filled with water to have some lawless persons, mixes water at gasoline or diesel oil and reaps staggering profits.To this, also have no idea so far to take precautions against with equipment and stop.

Summary of the invention

The utility model easily produces mislanding at the emptying institute of above present automobile light oil tank wagon, is a kind of gasoline that prevents of development in the unloading line of storage oil tank, and mislandings such as diesel oil or water are gone into the safety valve in the jar.This safety valve has the tintometric function of selection.

Technological scheme of the present invention is achieved in that

Select tintometric safety valve, comprise housing, import and outlet, the feed liquor cavity volume is arranged in housing, fuel-displaced cavity volume is separated by by dividing plate between feed liquor cavity volume and the fluid cavity volume; In the feed liquor cavity volume ball cock device is housed, control reaches and is top-loaded with discharge valve apparatus at the feed liquor cavity volume to the valve control device of diaphragm valve feed liquor and discharge opeing; And diaphragm valve is housed in the fluid cavity volume, the valve port of diaphragm valve is on dividing plate;

The liquid inlet pipe that logical feed liquor cavity volume is arranged on the described valve control device, the drain pipe of pass-out liquid cavity volume, the pipe of logical diaphragm valve, three Guan Youyi transverse tubes are connected; Adorn a feed liquor switch valve between the pipe of liquid inlet pipe and logical diaphragm valve, adorn a draining switch valve between the pipe of drain pipe and logical diaphragm valve, ball cock device and feed liquor switch valve, draining switch valve link; By ball cock device in feed liquor cavity volume mesorelief campaign, proportion according to liquid, the certain position of float rising of ball cock device, and control feed liquor switch valve and draining switch valve by float position, make feed liquor or discharge opeing in the diaphragm valve, opening or closing valve port, realize selecting liquid specific gravity come controlling liquid in safety valve by or end.

Above-described ball cock device has float, is fixed on the float upper pendulum bar, and fork head and free bearing are hinged, and free bearing is fixed on the dividing plate; Float is provided with transfers tintometric big balancing weight.It also has two wheel and the rocking bars that drag float, a little balancing weight, two wheels are adorned the termination of rocking bar by axle, act under the float, two rocking bars are contained in respectively on the valve rod of the feed liquor switch valve of valve control device and tapping switch valve, connect two connecting rods by little balancing weight, be contained on the fork of float with stationary axle respectively in two the connecting rod chute.

Above-described diaphragm valve comprises valve port and valve plate on the dividing plate, constitutes valve body and diaphragm chamber by dividing plate, and the liquid entering hole of liquid inlet pipe is contained in the diaphragm on the diaphragm chamber, is fixed on the diaphragm push rod on the diaphragm, and the connection set of diaphragm push rod and valve plate.

Provided by the invention a kind of have select tintometric safety valve to compare with background technique, outstanding substantial characteristics and progress are: it has solved the problem that storage tank is made mistakes by the tank car emptying time, can set the liquid that safety valve passed through according to the proportion of liquid, make other liquid can not enter in the jar, reduced the chaotic loss that causes, guaranteed jar a quality by institute's liquid storage body.The filling system that is used for road tank vehicle emptying in oil tank mainly is used in the in-line of gas station's storage tank.

Description of drawings

Fig. 1 selects tintometric safety valve working principle schematic representation;

Fig. 2 is the control valve working principle schematic representation of selecting in the tintometric safety valve

Fig. 3 selects tintometric safety valve structure plan view

Fig. 4 selects tintometric safety valve structure side view

Fig. 5 selects tintometric safety valve structure A-A sectional view

Fig. 6 selects tintometric safety valve structure B-B sectional view

Fig. 7 selects tintometric safety valve structure C-C sectional view

Embodiment

Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing:

Shown in Figure 1, select tintometric safety valve working principle schematic representation.Select tintometric safety valve to comprise housing 1, import 2 and outlet 3, it is characterized in that: feed liquor cavity volume 4 is arranged in housing, and fuel-displaced cavity volume 5 is separated by by dividing plate 6 between feed liquor cavity volume and the fluid cavity volume; Ball cock device 7 is housed in the feed liquor cavity volume, and control reaches and is top-loaded with discharge valve apparatus 9 at the feed liquor cavity volume to the valve control device 8 of diaphragm valve feed liquor and discharge opeing; And diaphragm valve 10 is housed in the fluid cavity volume, the valve port 101 of diaphragm valve is on dividing plate; Shown in Figure 2, control valve working principle schematic representation.The liquid inlet pipe 801 that logical feed liquor cavity volume is arranged on the valve control device, the drain pipe 802 of pass-out liquid cavity volume, 803, three Guan Youyi transverse tubes 804 of pipe of logical diaphragm valve are connected; Adorn a feed liquor switch valve 805 between the pipe of liquid inlet pipe and logical diaphragm valve, adorn a draining switch valve 806 between the pipe of drain pipe and logical diaphragm valve, ball cock device and feed liquor switch valve, draining switch valve link.

By ball cock device in feed liquor cavity volume mesorelief campaign, proportion according to liquid, the certain position of float rising of ball cock device, and control feed liquor switch valve and draining switch valve by float position, make feed liquor or discharge opeing in the diaphragm valve, opening or closing the valve port of diaphragm valve, realize selecting liquid specific gravity, controlling liquid in safety valve conducting with end.

Fig. 3, Fig. 4 and shown in Figure 5 select tintometric safety valve.Ball cock device has float 701, is fixed on float upper pendulum bar 702, and fork head and free bearing 703 are hinged, and free bearing is fixed on the dividing plate; Float is provided with transfers tintometric big balancing weight 704, bolt of weldering on float, and the centre of big balancing weight has hole slot, and is contained on the bolt, fixes with nut; By adjusting the length of big balancing weight, can adjust the proportion size that float adapts to two kinds of liquid (gasoline and diesel oil) to the hinge distance of rocking bar termination.Fig. 3 and shown in Figure 6, ball cock device also have two to overlap the wheel 705 that drags float, rocking bar 706, little balancing weight 707, connecting rod 708; Wheel is acted under the float by the termination of axle dress rocking bar, on the feed liquor switch valve that two rocking bars are contained in valve control device respectively and the valve rod of tapping switch valve, by little balancing weight 707 connection connecting rods, is contained on the fork of float with stationary axle in the connecting rod chute.The weight that changes little balancing weight 707 can change the specific gravity range of two kinds of liquid (gasoline and diesel oil).

Fig. 3 and shown in Figure 7, diaphragm valve 10 comprise valve port 101 and valve plate 102 on the dividing plate, constitute valve body and diaphragm chamber 103 by dividing plate, the liquid entering hole of liquid inlet pipe (104), be contained in the diaphragm 105 on the diaphragm chamber, be fixed on the diaphragm push rod 106 on the diaphragm, and the connection set 107 of diaphragm push rod and valve plate.Its connection set is a linkage mechanism.

Shown in Figure 3, a mouth is arranged at the top of housing, and has and cover 111, covers the form that is provided with band glass.There is a mouth side of housing diaphragm valve, and has and cover 112.

Illustrated in figures 1 and 2, select the working principle of tintometric safety valve as follows:

When liquid enters the feed liquor cavity volume 4 of selecting tintometric safety valve by import, be divided into three kinds of working conditions this moment:

(1) store can than light liquid proportion V1 when input liquid specific gravity V limits less than institute, promptly during V＜V1, float does not float, and is in the next; Feed liquor switch valve 805 closes, and draining switch valve 806 is opened, and diaphragm valve cuts out in the safety valve, and then the obstructed outlet of associating of liquid is flowed out.

(2) when limiting greater than institute, input liquid specific gravity V stores can than light liquid proportion V1, and less than limit the storage can than heavy-fluid body proportion V2, when being V1＜V＜V2, float is in meta to floating, feed liquor switch valve 805 is opened, draining switch valve 806 closes, and diaphragm valve is opened, and liquid flows out by outlet.

(3) as input liquid specific gravity V greater than limit storage can than heavy-fluid body proportion V2, promptly during V＞V2, float upwards floats and is in upperly, feed liquor switch valve 805 closes, draining switch valve 806 is opened, diaphragm valve cuts out, then obstructed the associating of liquid exports outflow.

Claims (6)

1, the tintometric safety valve of a kind of selection comprises housing (1), import (2) and outlet (3), and it is characterized in that: feed liquor cavity volume (4) is arranged in housing, and fuel-displaced cavity volume (5) is separated by by dividing plate (6) between feed liquor cavity volume and the fluid cavity volume; Ball cock device (7) is housed in the feed liquor cavity volume, and control reaches and is top-loaded with discharge valve apparatus (9) at the feed liquor cavity volume to the valve control device (8) of diaphragm valve feed liquor and discharge opeing; And diaphragm valve (10) is housed in the fluid cavity volume, the valve port of diaphragm valve (101) is on dividing plate; By ball cock device in feed liquor cavity volume mesorelief campaign, proportion according to liquid, the certain position of float rising of ball cock device, and drive valve control device control feed liquor or discharge opeing in diaphragm valve by ball cock device, diaphragm valve opens or closes valve port, controlling liquid in safety valve conducting with end.

2, the tintometric safety valve of a kind of selection according to claim 1, it is characterized in that: the liquid inlet pipe (801) that logical feed liquor cavity volume is arranged on the described valve control device, the drain pipe (802) of pass-out liquid cavity volume, the pipe (803) of logical diaphragm valve, three Guan Youyi transverse tube (804) is connected; Adorn a feed liquor switch valve (805) between the pipe of liquid inlet pipe and logical diaphragm valve, adorn a draining switch valve (806) between the pipe of drain pipe and logical diaphragm valve, ball cock device and feed liquor switch valve, draining switch valve link.

3, the tintometric safety valve of a kind of selection according to claim 2, it is characterized in that: described ball cock device has float (701), is fixed on float upper pendulum bar (702), and fork head and free bearing (703) are hinged, and free bearing is fixed on the dividing plate; Float is provided with transfers tintometric big balancing weight (704); Also have two wheels (705) that drag float, rocking bar (706), a little balancing weight (707), two connecting rods (708); Two wheels are adorned the termination of rocking bar by axle, act under the float, two rocking bars are contained in respectively on the valve rod of the feed liquor switch valve of valve control device and tapping switch valve, connect connecting rod by little balancing weight (707), are contained on the fork of float with stationary axle respectively in two the connecting rod chute.

4, the tintometric safety valve of a kind of selection according to claim 2, it is characterized in that: described diaphragm valve (10) comprises valve port on the dividing plate (101) and valve plate (102), constitute valve body and diaphragm chamber (103) by dividing plate, the liquid entering hole of liquid inlet pipe (104), be contained in the diaphragm (105) on the diaphragm chamber, be fixed on the diaphragm push rod (106) on the diaphragm, and the connection set (107) of diaphragm push rod and valve plate.

5, the tintometric safety valve of a kind of selection according to claim 1 is characterized in that: a mouth is arranged at the described top of housing (1) that comprises, and has lid (111), covers the form that is provided with band glass.

6, the tintometric safety valve of a kind of selection according to claim 1 is characterized in that: there is a mouth the described side of housing (1) diaphragm valve that comprises, and has lid (112).

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