CN2439558Y

CN2439558Y - Booster valve

Info

Publication number: CN2439558Y
Application number: CN 00235288
Authority: CN
Inventors: 李树森
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-28
Filing date: 2000-05-28
Publication date: 2001-07-18
Anticipated expiration: 2010-05-28

Abstract

The utility model relates to a booster valve used for converting low pressure oil in a hydraulic transmission system into high pressure oil proportionally, which belongs to the field of hydraulic transmission. The utility model is composed of a valve body, a booster, a hydraulically operated direction control valve, etc. The booster is combined with the hydraulically operated direction control valve organically through coordination of an oil inlet channel, an oil outlet channel, a control oil hole, and an oil drain valve. The utility model is characterized in that the booster and the hydraulically operated direction control valve fix positions mutually by promotion of pump source pressure, eliminating connecting-rod driving motion and rotary motion correspondingly, and therefore, the utility model has the advantages of simpleness and practicability. The utility model can form an automatic reciprocating oil cylinder according to the principle, and is favorable to make hydraulic transmission developed in the direction of simpleness and energy saving.

Description

Pressure charging valve

A kind of pressure charging valve that is made of hydraulicchange-over valve and pressurized machine belongs to the hydraulic transmission field, and it and low pressure pump mate, and can become the power source of various press machinees, jack, also can become the test stand of the various hydraulic element performances of test.

In existing Hydraulic Power Transmission System, also do not have desirable pressure charging valve, its supercharging mode has two kinds, and a kind of is the compound pump of exportable low pressure oil and two kinds of oil sources of high pressure oil, another kind is that the pressurizing cylinder of outer control is realized supercharging, the corresponding development that restricts some hydraulic transmission technologies.Show:

1, the versatility of compound oil pump is bad, correspondingly is unsuitable for it and is provided to various working required pressure machine, in the middle of the Hydraulic Power Transmission System, causes the complex structure of this class press machine, and mesh power increases, and idle work consumes more.

2, the boosting method of pressurized cylinder formula uses and has narrow limitation, it only is suitable for the power source as various test stands, and be applied to just compare difficulty in the middle of other Hydraulic Power Transmission System, this is because the hydraulic oil exported of this class mode does not possess continuity, correspondingly can not satisfy efficient, energy-conservation operating type.

The purpose of this utility model is exactly that a kind of pressure charging valve that low pressure oil in the hydraulic system is converted into high pressure oil will be provided.

The purpose of this utility model is achieved in that by advancing in the valve body, back oil road and control oilhole, pressurized machine and hydraulicchange-over valve is combined, and oil drain valve is housed in hydraulicchange-over valve and has the draining road.

Distinguishing feature of the present utility model is: when (1) utilizes the reducing piston motion in the pressurized machine to arrive a left side or right stop, fluid and the connection of controlling oilhole, promote the hydraulicchange-over valve to-and-fro motion by oil pressure, realize that thereby the reducing reciprocating motion of the pistons in the control pressurized machine forms the low pressure oil that enters of pressure charging valve, output high pressure oil low increased effect.

(2) because pressure charging valve is to adopt oil liquid pressure to cooperate the to-and-fro motion of draining control hydraulicchange-over valve, has changed traditional connecting rod commutation and realized the reciprocating kind of drive, corresponding minimizing auxiliary element reduces noise, reduces power loss.

(3) application of pressure charging valve, a kind of general hydraulic element have been increased again, people are raise the hydraulic oil of definite value or reduction by demand, selectivity to the design of Hydraulic Power Transmission System and application will be bigger like this, help changing people to hydraulicdriven design philosophy, hydraulic transmission is from now on developed to energy-conservation and simplification.

(4) change by pressure charging valve is made material can be applied to pressure charging valve pneumatic industry and other fluid device.

(5) in the middle of being extended to oil cylinder, the working principle of pressure charging valve will form a kind of automatic reciprocal cylinder.The characteristics of this oil cylinder are: do not need just to-and-fro motion voluntarily of manual or electronic commutation, and can be by determining to control oil-hole location or control mode, realization is to the selection of reciprocating oil cylinder stroke, thereby this oil cylinder is played a role at automation, robot and pneumatic transmission field.

Description of drawings:

Fig. 1 is the utility model structure principle chart

Fig. 2 is the utility model application mode schematic representation

Below in conjunction with accompanying drawing the utility model is further described

As shown in Figure 1, pressure charging valve is by valve body 14, hydraulicchange-over valve (lid 1, stifled 2, spring 3, draining spool 4, guiding valve 5, spring 7) and pressurized machine (hyperbaric chamber lid 8, high pressure draining valve 9, oil suction valve seat 10, oil sucting valve 11, spring 12, reducing piston 13, stifled 16) formation.Hydraulicchange-over valve is made up of guiding valve 5 and oil drain valve, utilizes bolt by covering 1 they to be sealed in the upper hole of valve body 14.On the cylindrical of guiding valve 5, be processed with the capable groove in five roads, m groove external diameter wherein matches with the internal diameter of the separation sleeve 6 that is made of two semicircles, the both ends of the surface of groove are drilled with the draining hole c that twice are led to draining spool 4, are drilled with draining hole, road, the two sides d that leads to the oil drain valve hole end surface in groove bottom.

Twice circular groove N is an oil-return groove, in position shown in Figure 1, its left side groove is to communicate with the left side oilhole of spill port a, and when the left chamber formation pressure oil of hydraulicchange-over valve was shifted hydraulicchange-over valve onto right positions, its right side groove could communicate with the right side oilhole of back oil road a.Be processed with two draining hole b of the high spot that leads to draining spool 4 in the bottom surface of n groove, its effect is when not having pressure oil in the bottom surface of draining spool 4, close between b hole and c hole, after 3 distortion of bottom surface formation oil pressure pressure spring put in place, b hole and c hole will be connected, shown in left side oil drain valve among Fig. 1.In addition, the twice circular groove L that is arranged in the outer part belongs to oil-feed tank, it is that right side oilhole among its right side circular groove and the oil input channel e is connected when shown position, make pressure oil can be through the e right side-the L right side-i right side enters in the reducing piston cavity of pressurized machine, and this moment the left side circular groove and an e left side between close.

Pressurized machine is by high pressure master chamber lid 8, reducing piston 13 formations such as grade.Reducing piston 13 is made up of oil suction valve seat 10 and oil sucting valve 11 that repacking fits over two ends, and is drilled with suction passage g along big piston end face and opposing face small piston place.Hyperbaric chamber lid 8 matches with valve body 14 by spiral shell acid bolt, and its endoporus matches with small area piston, also by stifled 16 high pressure draining valve 9 is housed, and is processed with the oil drainage hole that connects draining valve 9 and oil expulsion channel H for one.

Valve body 14 is rectangular member, and it is processed with oil input channel e along different section, oil expulsion channel h, back oil road a, the oil duct o that crosses, and be drilled with control oilhole f by the auxiliary hole that marks among the figure, and connect two k oilholes and two i oilholes between hydraulicchange-over valve and the pressurized machine.

Working principle: as shown in Figure 1, after pressure charging valve emptying air is full of oil, after the pressure oil of discharging from oil pump enters into the e oil duct of pressure charging valve, the pressure oil of discharging from oil pump enters into pressure oil behind the e oil duct of pressure charging valve through right chamber that the right groove L and the right oil duct i of guiding valve 5 enter into pressurized machine, because of the annulus area of the big piston cross-sectional area greater than small piston, pressure oil promptly can promote reducing piston 13 and be moved to the left.At this moment, the oil at left side small piston place will increase pressure and enter oil expulsion channel h through high pressure draining valve 9 according to the multiple proportions relation of large and small piston.Simultaneously, the oil in the annular chamber of left side flows back to fuel tank through the oil duct i in left side, left groove n after entering into back oil road a.Small piston chamber, right side can move to left with piston and form vacuum and fluid in one-way valve 11 sucks the left side annular chambers.After reducing piston 13 moves to the left side stop, right side control oilhole f exposes, make annular chamber interior pump pressure oil in the right in right f hole enters the right ring surface of m groove in the hydraulicchange-over valve, promoting the elastic force that guiding valve 5 moves right and oil drain valve promotion draining spool 4 overcomes spring 3 on the left of upside draining hole d enters moves to left, a c left side, draining hole that makes the left side through draining spool circular groove and b hole and a oil duct connect, make to accumulate in the interior fluid of groove m left side annular chamber moving to right and release with guiding valve 5.Guiding valve 5 just can move to the right side stop smoothly.After putting in place, hydraulicchange-over valve left side circular groove L will connect with the oilhole in oil input channel e left side, makes pump pressure oil in this enters the annular chamber in pressurized machine left side, promotes reducing piston 13 and moves to right, connect with back oil road a and the groove n on right side is right simultaneously, discharge the fluid in the right chamber of pressurized machine.And producing movement process same as described above, the motion that like this goes round and begins again makes supercharging can continuously fail high pressure oil.

From the working principle of pressure charging valve as can be known, the force value that pressure charging valve is discharged high pressure oil and the extent of pump pressure oil pressure value are by the ratio decision of the large and small footpath area of reducing piston, thereby have also determined the size of output flow and oil return flow.

The application mode of pressure charging valve in hydraulic system as shown in Figure 2, the pressure oil of oil pump output can directly enter executive component, oil cylinder, motor, tested valve or container etc. through selector valve, when load is increased to the rated pressure of pump, relief valve is opened, pump pressure oil just can enter into pressure charging valve, pressure charging valve is started working, and provide high pressure oil to selector valve and executive component through the Pg pipe.

If the hydraulicchange-over valve in the pressure charging valve and oil cylinder or cylinder are complementary, make I hole, a left side and oil cylinder cavity of resorption join, right hole of I and oil cylinder epicoele join, and two control oilhole f that but the lower dead center extending part gets out two control oilholes and hydraulicchange-over valves on piston are connected, and just can form a kind of automatic reciprocal cylinder that does not need manual, mechanical linkage or electronic commutation just can commutate voluntarily.

Claims

1, a kind of pressure charging valve is made of pressurized machine, hydraulicchange-over valve and valve body, it is characterized in that: by covering 1 hydraulicchange-over valve is assemblied in the upper hole of valve body 14, by hyperbaric chamber lid 8 pressurized machine is assemblied in the lower hole of valve body 14.

2, pressure charging valve as claimed in claim 1, it is characterized in that being processed with five road circular grooves in the excircle of the guiding valve 5 in the hydraulicchange-over valve, be processed with two draining hole c that lead to the draining valve pocket at groove m two ends, bottom land is drilled with two oil drain valve oil inlet hole d, the bottom land of twice annular oil return n groove respectively is drilled with a draining hole b who leads to back oil road a, twice annulars oil-feed tank 1 is the connecting passage that connects two e holes and two i holes, and is equipped with the oil drain valve that stifled 2, spring 3 and draining spool 4 constitute at guiding valve 5 two ends.

3, pressure charging valve as claimed in claim 1, it is characterized in that, reducing piston 13 is intermediate projections shape pistons in the pressurized machine, is equipped with oil suction valve seat 10 and oil sucting valve 11 at its two ends, and is drilled with suction passage g along the oil sucting valve of protruding piston end surface and opposing face small piston.

4, pressure charging valve as claimed in claim 1, it is characterized in that, the Kong Zhi up and down of valve body 14 is with being processed with two control oilhole f, in order to defeated logical pump pressure oil, control the commutation of surging, be processed with the oil inlet hole that two e and i communicate, and communicate with two spill ports by auxiliary hole o, make circular groove n on oilhole i and the guiding valve 5 and I about the commutation motion match, form the oilhole that oil-feed and the variation of oil return alternate cycles have double action.

5, pressure charging valve as claimed in claim 1 is characterized in that, separation sleeve 6 is the sleeve shape members that are made of two semicircles.