CN1202929C - Hydraulic transmission system for slide runner of continuous casting ladle - Google Patents

Abstract

The present invention relates to a hydraulic transmission system for a slide nozzle of a continuous casting ladle, which is composed of an electric hydraulic source with adjustable pressure, an emergency hydraulic source, a three-position four-way H-shaped manual directional with a valve neutral-position function, an oil filtering device, a quick joint, a hose and a working oil cylinder. Hydraulic oil provided by the electric hydraulic source enters a rodless cavity in the working oil cylinder through an interface A of the H-shaped manual reversing valve with a neutral-position function, a two-state reversing valve, the oil filtering device, the quick joint and the hose, so that the slide nozzle can be closed. The hydraulic oil enters a rod cavity in the working oil cylinder through an interface B, the oil filtering device, the quick joint and the hose so as to push a piston rod to open the slide nozzle. The H-shaped manual reversing valve with a neutral-position function can decompress automatically in a reverse neutral position, which is favorable to the connection of the quick joint. An oil path of the electric hydraulic source can be cut automatically by swinging a handle of the emergency hydraulic source repeatedly under the condition of unpredictable power failure. The emergency hydraulic source provides hydraulic oil for the rodless cavity in the working oil cylinder, or the slide nozzle can be closed. Therefore, the present invention can avoid accidents of burning equipment caused by the leakage of steel water.

Description

Hydraulic transmission system for slide runner of continuous casting ladle

Technical field

The present invention relates to a kind of Hydraulic Power Transmission System that slide runner of continuous casting ladle is opened or closed in the metallurgical continuous casting production that is applied to.

Background technology

As background technology of the present invention is to adopt solenoid directional control valve in production practices, make the Hydraulic Power Transmission System of emergent hydraulic power source with accumulator as slide runner of continuous casting ladle, its weak point is to adopt solenoid directional control valve the jam fault very easily to occur, the accumulator emergency operation also is prone to invalid phenomenon, cause slide gate nozzle in time not close, cause molten steel to run off even damage equipment.

Summary of the invention

The object of the present invention is to provide a kind of commutation, emergent hydraulic power source all hydraulic transmission system for slide runner of continuous casting ladle or device reliably, it can pressure release voluntarily when the multiple meta of reversal valve, does not need the manually-operated pressure release just can connect snap joint.

For achieving the above object, the technical solution used in the present invention is: as main body of the present invention, the also available hydraulic operated valve of its available manual operation does not need manually-operated pressure release voluntarily when answering meta with three or four logical H type meta function hand-operated direction valves.An interface of this H type meta function hand-operated direction valve is connected with rodless cavity in the operating cylinder through two position switching valves, oil-filtering apparatus, snap joint, flexible pipe, another interface is connected with rod chamber in the operating cylinder through oil-filtering apparatus, snap joint, flexible pipe, oil pump oil-out in the electric hydaulic source of the adjustable in pressure that the 3rd interface and fuel tank, air cleaner, motor, oil pump, overflow valve, Pressure gauge are formed is connected, and the 4th interface inserts fuel tank.Two position switching valves are connected on the pipeline of H type meta function hand-operated direction valve and operating cylinder rodless cavity.Two position switching valves reach the manual pump that is made of pump, unloader, handgrip and form emergent hydraulic power source, the oil-out of pump is connected with two position switching valves in the emergent hydraulic power source, one piston rod is installed in the rod chamber in the operating cylinder, and this piston rod directly links to each other with slide gate nozzle machinery.The move left and right of piston rod in operating cylinder realizes the unlatching of slide gate nozzle or closes.

The conticaster ladle slide gate in billet Hydraulic Power Transmission System that adopts as above technical scheme to provide is applied to during metallurgical continuous casting produces, and it has following characteristics: 1. the loop is simple and reliable, and control mode adopts manually or surges, and commutation is convenient, is difficult for taking place jam; 2. adopt 3-position 4-way H type meta function hand-operated direction valve, pressure release voluntarily when answering meta does not need the manually-operated pressure release in addition, has simplified operation, helps the connection of snap joint; 3. emergent hydraulic power source adopts manual pump to add the incision of two position switching valves, and reliable operation is easy and simple to handle, have " fool's operation " performance, under unexpected situation as when having a power failure, only need shake manual pump handle repeatedly, also can close slide gate nozzle, avoid big Baogang current to lose and lead to a disaster.

Description of drawings

Fig. 1 is the structural configuration schematic diagram of slide runner of continuous casting ladle hydraulic pressure rotation system of the present invention, also is specification digest accompanying drawing of the present invention.

The specific embodiment

Below in conjunction with drawings and Examples the specific embodiment of the present invention is described in further detail.

As shown in Figure 1,1 is fuel tank, and 2 is air cleaner, and 3 is motor, and 4 is oil pump, and 5 is overflow valve, and 6 is pressure meter switch, and 7 is Pressure gauge.By fuel tank 1, be installed in the adjustable electric hydaulic source of air cleaner 2, motor 3, oil pump 4, overflow valve 5, pressure meter switch 6 and Pressure gauge 7 decomposition pressures on the fuel tank 1.8 is 3-position 4-way H type meta function hand-operated direction valve, 9 is that pump, 10 is unloader, 11 ' for handgrip, wherein by pump 9, unloader 10 and handgrip 11 ' form manual pump II, 12 is two position switching valves, and forms emergent hydraulic power source by manual pump II and two position switching valves 12.13,13 ' be check valve, 14,14 ' be oil strainer, 15,15 ' be check valve, and by check valve 13 or 13 ', oil strainer 14 or 14 ', check valve 15 or 15 ' constitute oil-filtering apparatus I or I ', 16,16 ' be snap joint, 17,17 ' be flexible pipe, 18,18 ' and be snap joint, 19 be operating cylinder, 20 is the interior rodless cavity of operating cylinder 19,21 is the rod chamber in the operating cylinder 19, and 22 is the piston rod in the operating cylinder 19.Handle 11 is equipped with on 3-position 4-way H type meta function hand-operated direction valve 8 next doors, on the H type meta function hand-operated direction valve 8 four interface: A, B, P, T are arranged simultaneously, interface P links to each other with the outlet of the oil pump 4 in the electric hydaulic source of adjustable in pressure, interface T links to each other with fuel tank 1, interface A through two position switching valves 12, oil-filtering apparatus I ', snap joint 16 ' and 18 ', the rodless cavity 20 in flexible pipe 17 ' connection operating cylinder 19, the rod chamber 21 that interface B is communicated with in the operating cylinders 19 through oil-filtering apparatus I, snap joint 16 and 18, flexible pipe 17.One end of overflow valve 5 is connected with the outlet of oil pump 4 and of pressure meter switch 6 simultaneously, and the other end of overflow valve 5 inserts fuel tank 1, and the other end of pressure meter switch 6 connects Pressure gauge 7.When actuating motor 3 drove oil pump 4 to interface P oil transportation, the pressure of output oil was shown by Pressure gauge 7, shows that simultaneously the pipeline oil of pressure flows back to fuel tank 1 through overflow valve 5.Rodless cavity 20 from the interface A of H type meta function hand-operated direction valve 8 to work oil pump 19, from interface B to operating cylinder 19 rod chamber 21 be connected with in turn oil-filtering apparatus I ' or I, snap joint 16 ' or 16, flexible pipe 17 ' or 17, snap joint 18 ' or 18, their effect is: oil-filtering apparatus I ', I are unidirectional filter oil, prevent to connect the snap joint 18 of operating cylinder 19 ' or 18 dust enter system or fuel tank 1.Flexible pipe 17 ' or 17 two ends all be connected with snap joint 18 ' or 18,16 ' or 16, near the snap joint 18 of operating cylinder 19 1 ends ' or 18 effect be to be communicated with or to throw off hydraulic circuit when changing big bag, and near the snap joint 16 of oil-filtering apparatus I ' or I ' or 16 effect be to be communicated with when upgrading flexible pipe or the disengagement hydraulic circuit.On the pipeline of the rodless cavity 20 of the interface A that two position switching valves 12 are mounted in H type meta function hand-operated direction valve 8 in the operating cylinder 19, and on the position oil-filtering apparatus I ' check valve 13 ' and H type meta function hand-operated direction valve 8 between, its effect is the interface A and rodless cavity 20 normal opens of operating cylinder 19 that keeps H type meta function hand-operated direction valve 8 when the adjustable electric hydaulic source of working pressure, and what adopt in this case is spring reset maintenance normal open.When accident or other reason (as having a power failure) occurring the electric hydaulic source of adjustable in pressure can not be moved or fuel feeding, then use the manual pump II that is connected in two position switching valves 12, manual pump II is by pump 9, unloader 10, handgrip 11 ' form, and the oil-out of pump 9 is connected with two position switching valves 12.Unloader 10 is connected with pump 9 bypasses, handgrip 11 ' the be installed in next door of pump 9.When enabling manual pump II, shake repeatedly handgrip 11 ', under the effect of manual pump, make the commutation of two position switching valves 12, make its interface be communicated with oil-filtering apparatus I '.After the commutation, cut off the fuel feeding road in the electric hydaulic source of H type meta function hand-operated direction valve 8 interface A simultaneously, stop electric hydaulic source fuel feeding, connect manual pump II and since the pressure oil of the oil-out of the pump 9 among manual pump II output through two position switching valves 12, oil-filtering apparatus I ' and snap joint 16 ', flexible pipe 17 ', snap joint 18 ' the enter rodless cavity 20 in the operating cylinder 19.Because the effect of pressure oil, promotion is linked in the piston of piston rod 22, makes piston rod 22 move (as shown in the figure) to the right, and piston rod 22 connects slide gate mechanisms, so slide gate nozzle is closed.Recover electric hydaulic source fuel feeding, then open the unloader 10 in the manual pump II, the pressure that makes two position switching valves, 12 controlled pressure oil is zero, and two position switching valves 12 reset under the spring action of two position switching valves 12, promptly cut off manual pump II fuel feeding, connect electric hydaulic source fuel feeding.Under normal circumstances, by electric hydaulic source fuel feeding, H type meta function hand-operated direction valve 8 is in left side position, pressure oil through interface A, two position switching valves 12, oil-filtering apparatus I ', snap joint 16 ', flexible pipe 17 ', snap joint 18 ' enter the rodless cavity of operating cylinder 19, realize that slide gate nozzle closes.Open slide gate nozzle as need, then pull handle 11 and make 8 commutations of H type meta function hand-operated direction valve, interface B is communicated with interface P to right position.So the pressure oil that is provided by the electric hydaulic source enters the rod chamber 21 of operating cylinder 19 through H type meta function hand-operated direction valve 8, oil-filtering apparatus I, snap joint 16, flexible pipe 17, snap joint 18, promoting in the rod chamber 21 piston rod 22 moves to the left side, so piston rod 22 drives slide gate nozzle machinery, slide gate nozzle is opened, carried out direct casting.

Claims (1)

1, a kind of hydraulic transmission system for slide runner of continuous casting ladle, it is characterized in that it is by fuel tank (1), air cleaner (2), motor (3), oil pump (4), overflow valve (5), pressure meter switch (6), Pressure gauge (7), 3-position 4-way H type meta function hand-operated direction valve (8), pump (9), unloader (10), handle (11), handgrip (11 '), two position switching valves (12), check valve (13,13 '), oil strainer (14,14 '), check valve (15,15 '), snap joint (16,16 '), flexible pipe (17,17 '), snap joint (18,18 '), operating cylinder (19) is formed, air cleaner (2) is installed on the fuel tank (1), motor (3) links to each other with oil pump (4), 3-position 4-way H type meta function hand-operated direction valve (8) has four interface (A, B, P, T), handle (11) is installed in the next door of 3-position 4-way H type meta function hand-operated direction valve (8), the outlet of oil pump (4) links to each other with the interface (P) of 3-position 4-way H type meta function hand-operated direction valve (8), one end of overflow valve (5) links to each other with the outlet of oil pump (4) and of pressure meter switch (6), the other end of pressure meter switch (6) connects Pressure gauge (7), the other end of overflow valve (5) inserts fuel tank (1), the interface (A) of 3-position 4-way H type meta function hand-operated direction valve (8) is through two position switching valves (12), the check valve (15 ') of oil-filtering apparatus (1 '), snap joint (16 '), flexible pipe (17 '), snap joint (18 ') is communicated with the rodless cavity (20) in the operating cylinder (19), the interface (T) of 3-position 4-way H type meta function hand-operated direction valve (8) links to each other with fuel tank (1), interface (B) is through the check valve (15) of oil-filtering apparatus (I), snap joint (16), flexible pipe (17), snap joint (18) is communicated with the rod chamber (21) in the operating cylinder (19), two position switching valves (12) are installed in the interface (A) of 3-position 4-way H type meta function hand-operated direction valve (8) to the pipeline of the interior rodless cavity (20) of operating cylinder (19), be positioned between check valve (13 ') and the 3-position 4-way H type meta function hand-operated direction valve (8), the oil-out of pump (9) is connected with two position switching valves (12), unloader (10) is bypass with pump (9) and is connected, and handgrip (11 ') is installed in the next door of pump (9).