CN209953793U - Steel ladle sliding gate mechanism - Google Patents

Abstract

The utility model belongs to the technical field of smelting equipment, a ladle sliding gate mechanism is proposed, including fixed frame, switching frame, sliding frame, the mouth of a river, lower mouth of a river, top slide, lower slide, drive arrangement, the below of switching frame is provided with protector, protector includes first backplate and second backplate, and the second backplate sets up in the below of first backplate, is provided with the second through-hole on the first backplate, is provided with the third through-hole with second through-hole coaxial line on the second backplate, and the mouth of a river passes second through-hole and third through-hole in proper order down. Through above-mentioned technical scheme, solved among the prior art to the poor problem of protection effect of spring and lower mouth of a river.

Description

Steel ladle sliding gate mechanism

Technical Field

The utility model belongs to the technical field of smelting equipment, a ladle sliding gate mechanism is related to.

Background

The sliding gate is a control device of molten steel in the casting process of a continuous casting machine, and can accurately adjust the water flow from a ladle to a continuous casting tundish to balance the inflow and outflow molten steel, so that the continuous casting operation is easier to control and an indispensable part in smelting is realized.

The invention discloses a pneumatic pressurized steel ladle sliding nozzle mechanism, which comprises a fixed frame, an opening and closing frame, a sliding frame, a lower nozzle seat, a lower nozzle puller, an upper sliding plate, a lower sliding plate, an upper nozzle, a lower nozzle, a surface pressure bolt, a sliding plate pressing device and a driving device, wherein the surface pressure bolt penetrates through a spring pressing plate, a surface pressure supporting column and a bottom round hole of a spring chamber and is screwed in a surface pressure locking nut during pressurizing operation of the mechanism, the fixed frame and the opening and closing frame are connected together and tightly press the sliding frame, the spring in the spring chamber is compressed and uniformly transmits the spring pressure to the sliding frame through a fixed sliding rail, and the driving device drives the sliding frame to reciprocate to drive the upper sliding plate and the lower sliding plate to stably slide so as to realize a steel pouring process. The invention has the advantages of simple operation, stable generation of mechanism surface pressure, uniform transmission of spring pressure, high continuous sliding rate of the sliding plate, less spare part consumption, low comprehensive cost, good safety performance and low total height of the mechanism, and is suitable for popularization and application on medium and small steel ladles. However, the prior ladle sliding nozzle mechanism lacks the protection for the spring and the lower nozzle, thereby causing the problems that the spring and the lower nozzle are easy to damage due to high temperature and the service life is short. The invention patent is provided with the protection plate below the opening and closing frame, but the protection effect is poor, and the spring and the drain port cannot be effectively protected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a ladle sliding gate mechanism has solved the poor problem of protection effect to spring and lower mouth of a river among the prior art.

The technical scheme of the utility model is realized like this:

a ladle sliding gate mechanism comprises a fixed frame, an opening and closing frame, a sliding frame, an upper gate, a lower gate, an upper sliding plate, a lower sliding plate and a driving device, wherein a protective device is arranged below the opening and closing frame,

the protection device comprises a first protection plate and a second protection plate, the second protection plate is arranged below the first protection plate,

the first guard plate is provided with a second through hole, the second guard plate is provided with a third through hole coaxial with the second through hole, and the lower water gap sequentially penetrates through the second through hole and the third through hole.

As a further technical scheme, one end of the second protection plate is rotatably connected with the first protection plate, and the other end of the second protection plate is detachably connected with the first protection plate.

As a further technical scheme, the first guard plate comprises a plate I, a plate II, a connecting part and a plate III which are sequentially connected, the connecting part is provided with the second through hole, connecting holes are arranged around the second through hole,

the lower end of the sliding frame is provided with a connecting rod, one end of the connecting rod is connected with the sliding frame, the other end of the connecting rod is provided with a first through hole of which the axis is vertical to the axis of the second through hole,

the connecting rod passes through the connecting hole and is arranged in the first through hole in a penetrating mode through a first inclined wedge, and the length of the first inclined wedge is larger than the diameter of the connecting hole.

As a further technical scheme, the connecting portion comprises a connecting plate and side plates which are connected with the connecting plate, the connecting plate is respectively connected with the first plate and the second plate through the side plates, and the connecting plate and the side plates form a groove with a downward opening.

As a further technical scheme, the lower end of the second plate is provided with a first connecting piece, the first connecting piece is provided with a fourth through hole of which the axis is vertical to the axis of the second through hole,

and a second connecting piece is arranged at one end of the second guard plate, a fifth through hole coaxial with the fourth through hole is arranged on the second connecting piece, and a pin shaft penetrates through the fourth through hole and the fifth through hole.

As a further technical proposal, the other end of the third plate, which is connected with the side plate, is provided with a connecting ring, the axis of the connecting ring is parallel to the axis of the second through hole,

the other end of the second guard plate connected with the first guard plate is provided with a fixed block, the lower end of the fixed block is connected with the second guard plate, the upper end of the fixed block is provided with a sixth through hole,

the upper end of the fixed block penetrates through the connecting ring, and penetrates through the sixth through hole by using a second inclined wedge, and the length of the second inclined wedge is larger than the diameter of the sixth through hole.

As a further technical scheme, spring chambers are symmetrically arranged on two sides of the opening and closing frame, a plurality of spring guide grooves are formed in the spring chambers, butterfly springs are arranged in the spring guide grooves, and openings of the spring guide grooves are connected with the baffle.

As a further technical scheme, one end of the fixed frame is rotatably connected with one end of the opening and closing frame, and the other end of the fixed frame is detachably connected with the other end of the opening and closing frame through a clamping piece.

As a further technical scheme, the outer wall of the opening and closing frame is provided with an air cooling pipe in a surrounding mode, one side, in contact with the outer wall of the spring chamber, of the air cooling pipe is provided with a first ventilation hole, and the outer wall of the spring chamber is provided with a second ventilation hole corresponding to the first ventilation hole.

The utility model discloses a theory of operation and beneficial effect do:

1. the utility model discloses at the during operation of casting, need make drive arrangement drive sliding frame remove in the switching frame, make the bore of slide down, the lower mouth of a river remove with the bore of slide, the position of the coaxial line of the mouth of a river of going up, thereby make whole mouth of a river be the open mode, when stopping the casting, drive arrangement drives sliding frame and removes to opposite direction in the switching frame, make the bore of slide down, the bore of the skew slide of going up in the mouth of a river down, the mouth of a river of going up, thereby whole mouth of a river is the closed condition, realize the control to the molten steel among the conticaster casting process. The below of switching frame is provided with protector, protector mainly has protection and thermal-insulated function, can effectively protect the mechanism, also avoid the damage of some original papers under the high temperature simultaneously, reinforcing life, protector includes first backplate and second backplate, first backplate at first plays protection and thermal-insulated effect, first backplate is because the installation needs, middle second through-hole need be opened a little greatly, and cause and can not protect the mechanism completely, the setting of second backplate can compensate the naked gap of leaking of first backplate, further protect and insulate against heat the mechanism, the design is simple, therefore, the clothes hanger is strong in practicability.

2. The utility model discloses the one end of well second backplate rotates with first backplate to be connected, the other end can be dismantled with first backplate and be connected, the other end that can make the second backplate uses the pivot of one end to rotate as the axle in first backplate below, form the shaft type switching form of door, the switch is very convenient, and it is also convenient to change, because the second backplate is close from the mouth of a river hole (molten steel stream), damage relatively easily, it is convenient to design change on the one hand like this, time saving and labor saving, on the other hand can only damage the second backplate, and reduce the probability that first backplate damaged, strengthen the life of first backplate, spare part cost is reduced.

3. The first guard plate comprises a first plate, a second plate, a connecting part and a third plate which are connected in sequence, wherein the connecting part is used for being connected with the sliding frame, namely, a connecting rod at the lower end of the sliding frame passes through the connecting hole, and then the first wedge is arranged in the first through hole in a penetrating manner, so that the fixing of the connecting part and the sliding frame can be realized; the first plate, the second plate and the third plate all have the effect of covering the lower end of the whole mechanism, time and labor are saved, and the protection effect is good.

4. The utility model discloses well connecting portion include the connecting plate and all the curb plate of being connected with the connecting plate, and the connecting plate passes through the curb plate to be connected with board one, board two respectively, and the connecting plate forms the recess that the opening is decurrent with the curb plate, makes the height that highly is greater than board one and board two of connecting portion to with the shape of the lower surface of switching frame accord with more, reinforcing protection effect.

5. The utility model discloses in the well round pin axle is worn to establish in fourth through-hole and fifth through-hole, make first connecting piece and second connecting piece can rotate at the round pin epaxial to the one end that drives the second backplate can use the round pin axle to rotate as the axle, thereby realize the second backplate be connected with the rotation of first backplate, labour saving and time saving, the good reliability.

6. The utility model discloses in pass the go-between of first backplate one end with the fixed block of second backplate one end, pass the sixth through-hole on the fixed orifices with the second slide wedge to it is fixed with first backplate with the one end of second backplate, when needs change the second backplate, take out the second slide wedge from the sixth through-hole, make the fixed block break away from the go-between, thereby accomplish the dismantlement of second backplate one end and first backplate, labour saving and time saving, the practicality is strong.

7. The utility model discloses well dish spring sets up in the spring guide way of spring room, and it is fixed with the baffle at the lower extreme, can make switching frame and fixed frame interface pressure under the state that compresses tightly invariable, thereby promote interface pressure between slide and the lower slide invariable, even, accurate, easily establish, the mechanism is under operating condition, because the thermal energy that the temperature variation caused and the change that operating personnel custom difference caused are absorbed by the dish spring, it is invariable to have applied all the time at slide and lower slide interface like this, even pressure, guarantee the safe work operation of mechanism.

8. The utility model discloses well fixed frame's one end is rotated with the one end of switching frame and is connected, and fixed frame's the other end passes through the chucking spare with the other end of switching frame and can dismantle and be connected, can form gate-type structure, and is simple reasonable, and convenient operation conveniently dismantles maintenance change original paper, labour saving and time saving.

9. The utility model discloses in to the intraductal compressed cold air that lets in of forced air cooling, compressed cold air enters into the spring room through first ventilation hole and second ventilation hole, cools off the dish spring of the installation of the inside, avoids the dish spring performance degradation under the effect of high temperature, causes the condition that can not produce constant pressure to the interface of last slide and lower slide and takes place, has increased the fail safe nature of mechanism.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of the explosion structure of the present invention;

FIG. 2 is a schematic view of a first guard plate structure of the present invention;

FIG. 3 is a schematic view of a second protective plate structure of the present invention;

fig. 4 is a schematic view of the open state of the present invention;

in the figure: 1-fixed frame, 2-open-close frame, 3-sliding frame, 4-upper nozzle, 5-lower nozzle, 6-upper sliding plate, 7-lower sliding plate, 8-driving device, 9-protecting device, 91-first protecting plate, 911-first plate, 912-second plate, 913-connecting part, 9131-connecting plate, 9132-side plate, 914-third plate, 92-second protecting plate, 10-second through hole, 11-third through hole, 12-connecting rod, 13-first wedge, 14-first connecting piece, 15-second connecting piece, 16-connecting ring, 17-fixed block, 18-second wedge, 19-spring chamber, 20-spring guide groove, 21-disc spring, 22-clamping piece and 23-air cooling pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-4, the utility model provides a steel ladle sliding gate mechanism,

comprises a fixed frame 1, an opening and closing frame 2, a sliding frame 3, an upper water gap 4, a lower water gap 5, an upper sliding plate 6, a lower sliding plate 7 and a driving device 8, wherein a protective device 9 is arranged below the opening and closing frame 2,

the guard 9 includes a first guard plate 91 and a second guard plate 92, the second guard plate 92 being disposed below the first guard plate 91,

the first guard plate 91 is provided with a second through hole 10, the second guard plate 92 is provided with a third through hole 11 coaxial with the second through hole 10, and the drain 5 sequentially penetrates through the second through hole 10 and the third through hole 11.

In this embodiment, during casting, the driving device 8 needs to drive the sliding frame 3 to move in the opening and closing frame 2, so that the aperture of the lower sliding plate 7 and the lower nozzle 5 move to positions coaxial with the aperture of the upper sliding plate 6 and the upper nozzle 4, thereby enabling the whole nozzle to be in an open state, when casting is stopped, the driving device 8 drives the sliding frame 3 to move in the opening and closing frame 2 in opposite directions, so that the aperture of the lower sliding plate 7 and the lower nozzle 5 deviate from the aperture of the upper sliding plate 6 and the upper nozzle 4, thereby enabling the whole nozzle to be in a closed state, and controlling molten steel in the casting process of the continuous casting machine. Opening and closing frame 2's below is provided with protector 9, protector 9 mainly has protection and thermal-insulated function, can effectively protect the mechanism, also avoid the damage of some original papers under the high temperature simultaneously, reinforcing life, protector 9 includes first backplate 91 and second backplate 92, first backplate 91 at first plays protection and thermal-insulated effect, first backplate 91 is because the installation needs, middle second through-hole 10 need be opened a little greatly, and cause and can not protect the mechanism completely, the setting up of second backplate 92 can compensate the naked gap of leaking of first backplate 91, further protect and insulate against heat the mechanism, the design is simple, therefore, the clothes hanger is strong in practicability.

Further, one end of the second guard plate 92 is rotatably connected to the first guard plate 91, and the other end is detachably connected to the first guard plate 91.

In this embodiment, one end of the second guard plate 92 is rotatably connected to the first guard plate 91, and the other end is detachably connected to the first guard plate 91, so that the other end of the second guard plate 92 can rotate below the first guard plate 91 by using the rotating shaft at one end as an axis, thereby forming a door spindle type opening and closing form, the switch is convenient, and the replacement is also convenient, since the second guard plate 92 is close to the steel water flow in the water port hole, the steel water flow is easy to damage, the design is convenient to replace on the one hand, time and labor are saved, on the other hand, the second guard plate 92 can be damaged only, the probability of damage to the first guard plate 91 is reduced, the service life of the first guard plate 91 is.

Further, the first guard plate 91 comprises a first plate 911, a second plate 912, a connecting part 913 and a third plate 914 which are connected in sequence, the connecting part 913 is provided with a second through hole 10, a connecting hole is arranged around the second through hole 10,

the lower end of the sliding frame 3 is provided with a connecting rod 12, one end of the connecting rod 12 is connected with the sliding frame 3, the other end is provided with a first through hole with the axis vertical to the axis of the second through hole 10,

the connecting rod 12 passes through the connecting hole and is arranged in the first through hole in a penetrating mode through the first inclined wedge 13, and the length of the first inclined wedge 13 is larger than the diameter of the connecting hole.

In this embodiment, the first guard plate 91 includes a first plate 911, a second plate 912, a connecting portion 913, and a third plate 914, which are sequentially connected, where the connecting portion 913 is used to connect with the sliding frame 3, that is, a connecting rod 12 at the lower end of the sliding frame 3 passes through the connecting hole, and then a first wedge 13 is inserted into the first through hole, so that the connecting portion 913 and the sliding frame 3 can be fixed; the first plate 911, the second plate 912 and the third plate 914 all play a role in covering the lower end of the whole mechanism, time and labor are saved, and the protection effect is good.

Further, the connecting portion 913 includes a connecting plate 9131 and a side plate 9132 that is connected with the connecting plate 9131, and the connecting plate 9131 is connected with the first plate 911 and the second plate 912 through the side plate 9132 respectively, and the connecting plate 9131 and the side plate 9132 form a recess with a downward opening.

Connecting portion 913 includes connecting plate 9131 and all is connected with connecting plate 9131 curb plate 9132 in this embodiment, and connecting plate 9131 passes through curb plate 9132 and is connected with board 911, two 912 respectively, and connecting plate 9131 forms the decurrent recess of opening with curb plate 9132, makes the height of connecting portion 913 be greater than the height of board 911 and two 912 to with the shape of the lower surface of switching frame 2 accord with more, reinforcing protection effect.

Further, a first connecting piece 14 is arranged at the lower end of the second plate 912, a fourth through hole with the axis vertical to the axis of the second through hole 10 is arranged on the first connecting piece 14,

one end of the second guard plate 92 is provided with a second connecting piece 15, the second connecting piece 15 is provided with a fifth through hole coaxial with the fourth through hole, and a pin shaft penetrates through the fourth through hole and the fifth through hole.

In this embodiment, the pin shaft is inserted into the fourth through hole and the fifth through hole, so that the first connecting member 14 and the second connecting member 15 can rotate on the pin shaft, and thereby the one end of the second protection plate 92 is driven to rotate by using the pin shaft as a shaft, and the second protection plate 92 is rotatably connected with the first protection plate 91, thereby saving time and labor and having strong reliability.

Further, the other end of the third plate 914 connected with the side plate 9132 is provided with a connecting ring 16, the axis of the connecting ring 16 is parallel to the axis of the second through hole 10,

the other end of the second guard plate 92 connected with the first guard plate 91 is provided with a fixed block 17, the lower end of the fixed block 17 is connected with the second guard plate 92, the upper end is provided with a sixth through hole,

the upper end of the fixing block 17 passes through the connection ring 16 and passes through the sixth through hole by using a second wedge 18, and the length of the second wedge 18 is greater than the diameter of the sixth through hole.

In this embodiment, the fixing block 17 at one end of the second guard plate 92 passes through the connecting ring 16 at one end of the first guard plate 91, and the second wedge 18 passes through the sixth through hole on the fixing hole, so as to fix one end of the second guard plate 92 with the first guard plate 91, and when the second guard plate 92 needs to be replaced, the second wedge 18 is taken out from the sixth through hole, so that the fixing block 17 is separated from the connecting ring 16, thereby completing the detachment of one end of the second guard plate 92 from the first guard plate 91, and the device is time-saving, labor-saving, and high in practicability.

Further, spring chambers 19 are symmetrically arranged on two sides of the opening and closing frame 2, a plurality of spring guide grooves 20 are formed in the spring chambers 19, butterfly springs 21 are arranged in the spring guide grooves 20, and openings of the spring guide grooves 20 are connected with the baffle.

In this embodiment, the disc spring 21 is disposed in the spring guide groove 20 of the spring chamber 19 and fixed at the lower end by the baffle, so that the interface pressure between the opening/closing frame 2 and the fixed frame 1 is constant in the compressed state, thereby promoting the interface pressure between the upper sliding plate 6 and the lower sliding plate 7 to be constant, uniform, accurate and easy to establish, and the mechanism is in the working state, and the changes caused by the thermal expansion due to the temperature change and the habit difference of the operator are absorbed by the disc spring 21, so that the interface between the upper sliding plate 6 and the lower sliding plate 7 is always applied with constant and uniform pressure, and the safe working and operation of the mechanism is ensured.

Further, one end of the fixed frame 1 is rotatably connected to one end of the opening/closing frame 2, and the other end of the fixed frame 1 is detachably connected to the other end of the opening/closing frame 2 via a clamping member 22.

In this embodiment fixed frame 1's one end and opening and closing frame 2's one end are rotated and are connected, and fixed frame 1's the other end passes through chucking spare 22 with opening and closing frame 2's the other end and can dismantle the connection, can form gate-type structure, and is simple reasonable, and convenient operation conveniently dismantles the maintenance and changes original paper, labour saving and time saving.

Further, an air-cooling pipe 23 is provided around the outer wall of the opening and closing frame 2, a first vent hole is provided on the side of the air-cooling pipe 23 contacting the outer wall of the spring chamber 19, and a second vent hole corresponding to the first vent hole is provided on the outer wall of the spring chamber 19.

Compressed cold air is introduced into the air cooling pipe 23 in the embodiment, and the compressed cold air enters the spring chamber 19 through the first ventilation hole and the second ventilation hole to cool the disc spring 21 mounted inside, so that the performance reduction of the disc spring 21 under the action of high temperature is avoided, the condition that the interface of the upper sliding plate 6 and the lower sliding plate 7 cannot generate constant pressure is avoided, and the safety and reliability of the mechanism are improved.

Further, the clamping member 22 comprises a clamping block and a clamping rod, the clamping rod is clamped on the clamping block,

the fixture block comprises a fixing part and a clamping part which are connected with each other, the fixing part is fixed on the fixed frame 1, the clamping part is provided with a seventh through hole with the axis vertical to the axis of the second through hole 10, one side of the seventh through hole is provided with a clamping groove,

the clamping rod comprises a through rod and a clamping piece arranged on the through rod,

the opening and closing support is provided with a fixing groove coaxial with the seventh through hole, the clamping rod is arranged in the seventh through hole and the fixing groove in a penetrating mode, and the clamping rod is rotated to enable the clamping piece to be clamped in the clamping groove.

In this embodiment, after fastening fixed frame 1 and switching frame 2, insert the kelly in seventh through-hole and draw-in groove, the pole is worn in the rotating, make the card on wearing the pole establish in the draw-in groove, thereby realize the one end to fixed frame 1 and the fixed of switching frame 2 one end, when needs are dismantled, the pole is worn in the rotating, the card that makes on wearing the pole breaks away from the draw-in groove is established, take off the kelly, can separate fixed frame 1's one end and switching frame 2's one end, time saving and labor saving, therefore, the steam generator is simple in operation, and high practicability is achieved.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a ladle slide gate mechanism, includes fixed frame (1), switching frame (2), sliding frame (3), upper nozzle (4), lower nozzle (5), upper sliding plate (6), lower sliding plate (7), drive arrangement (8), its characterized in that: a protective device (9) is arranged below the opening and closing frame (2),

the guard device (9) includes a first guard plate (91) and a second guard plate (92), the second guard plate (92) is disposed below the first guard plate (91),

the first guard plate (91) is provided with a second through hole (10), the second guard plate (92) is provided with a third through hole (11) coaxial with the second through hole (10), and the water outlet (5) sequentially penetrates through the second through hole (10) and the third through hole (11).

2. The ladle slide gate mechanism according to claim 1, wherein: one end of the second guard plate (92) is rotatably connected with the first guard plate (91), and the other end of the second guard plate is detachably connected with the first guard plate (91).

3. The ladle slide gate mechanism according to claim 2, wherein: the first protection plate (91) comprises a first plate (911), a second plate (912), a connecting part (913) and a third plate (914) which are sequentially connected, the connecting part (913) is provided with the second through hole (10), connecting holes are arranged around the second through hole (10),

a connecting rod (12) is arranged at the lower end of the sliding frame (3), one end of the connecting rod (12) is connected with the sliding frame (3), the other end is provided with a first through hole of which the axis is vertical to the axis of the second through hole (10),

the connecting rod (12) penetrates through the connecting hole and is arranged in the first through hole in a penetrating mode through a first inclined wedge (13), and the length of the first inclined wedge (13) is larger than the diameter of the connecting hole.

4. A ladle slide gate mechanism as defined in claim 3, wherein: connecting portion (913) including connecting plate (9131) and all with curb plate (9132) that connecting plate (9131) is connected, connecting plate (9131) passes through curb plate (9132) respectively with board one (911) board two (912) are connected, connecting plate (9131) with curb plate (9132) forms the decurrent recess of opening.

5. The ladle slide gate mechanism according to claim 4, wherein: a first connecting piece (14) is arranged at the lower end of the second plate (912), a fourth through hole with the axis vertical to the axis of the second through hole (10) is arranged on the first connecting piece (14),

one end of the second guard plate (92) is provided with a second connecting piece (15), a fifth through hole coaxial with the fourth through hole is formed in the second connecting piece (15), and a pin shaft penetrates through the fourth through hole and the fifth through hole.

6. The ladle slide gate mechanism according to claim 5, wherein: the other end of the third plate (914) connected with the side plate (9132) is provided with a connecting ring (16), the axis of the connecting ring (16) is parallel to the axis of the second through hole (10),

the other end of the second guard plate (92) connected with the first guard plate (91) is provided with a fixed block (17), the lower end of the fixed block (17) is connected with the second guard plate (92), the upper end is provided with a sixth through hole,

the upper end of the fixing block (17) penetrates through the connecting ring (16) and penetrates through the sixth through hole by using a second inclined wedge (18), and the length of the second inclined wedge (18) is larger than the diameter of the sixth through hole.

7. The ladle slide gate mechanism according to claim 1, wherein: spring chambers (19) are symmetrically arranged on two sides of the opening and closing frame (2), a plurality of spring guide grooves (20) are formed in the spring chambers (19), butterfly springs (21) are arranged in the spring guide grooves (20), and openings of the spring guide grooves (20) are connected with the baffle.

8. The ladle slide gate mechanism according to claim 1, wherein: the one end of fixed frame (1) with the one end of switching frame (2) is rotated and is connected, the other end of fixed frame (1) with the other end of switching frame (2) passes through chucking spare (22) and can dismantle the connection.

9. The ladle slide gate mechanism according to claim 7, wherein: the outer wall of switching frame (2) is around being provided with air-cooled pipe (23), air-cooled pipe (23) with one side of spring chamber (19) outer wall contact is provided with first ventilation hole, be provided with on the outer wall of spring chamber (19) with the second ventilation hole that first ventilation hole corresponds.

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