CN216405532U - A precise slag grabbing system for blast furnace water slag bottom filter - Google Patents

Abstract

The utility model provides a blast furnace water slag bottom filter tank accurate slag grabbing system which comprises a cart track (1), a cart mechanism (2), a trolley track (3), a trolley mechanism (4) and a slag digging device (5) which are sequentially arranged, wherein the slag digging device (5) comprises a mounting base (51), a first swing arm (52), a second swing arm (53) and a grab bucket mechanism (54) which are sequentially arranged, the slag digging device (5) can rotate around a rotating axis, the grab bucket mechanism (54) can move to the lower part of the cart track (1) or the upper part of the trolley mechanism (4), the grab bucket mechanism (54) comprises two grab buckets (545) which are bilaterally symmetrically arranged, and the lower parts of the two grab buckets (545) can be opened or closed. This accurate slag grabbing system of blast furnace water slag bottom filter is the system of the low type clearance bottom filter sediment grain of convenient to maintain, has solved the swing of bridge type grab bucket crane grab bucket and has spilt the problem of material to can realize accurate slag grabbing and avoid destroying bottom filter material structure.

Description

A blast furnace water slag bottom filter tank precise slag grabbing system

technical field

The utility model relates to the technical field of blast furnace ironmaking equipment, in particular to a precise slag grabbing system for a blast furnace water slag bottom filter tank.

Background technique

High-temperature liquid slag (1350℃-1500℃) will be produced during blast furnace smelting, and about 280 million tons of high-temperature liquid slag are produced in domestic molten iron production every year.

At home and abroad, precipitation filtration method (often called bottom filtration method) water slag process is usually used to treat molten slag. Before the blast furnace, the slag is washed by water, and the molten slag is crushed by water quenching, and becomes a loose slag-water mixture (often called water slag). The water slag enters the bottom filter tank through the slag flushing ditch. The liquid water is filtered through the multi-layer filter material in the bottom filter tank, leaving solid wet slag particles on the top of the filter material in the bottom filter tank, and then the bridge-type grab crane grabs the slag particles and loads them out. The slag particles (particle size 0.2mm-3mm) obtained after water quenching are widely used, and can be used as cement materials, thermal insulation fillers, etc., so that the slag can be fully utilized.

The existing slag grabbing equipments are all bridge grab cranes, which are also the most common slag grabbing equipment in blast furnace molten iron slag systems. The bridge grab crane is located above the bottom filter and runs on an elevated track. The elevated track is located on a tall cement column or metal bracket. The height of the track surface is generally more than 10 meters, which brings great difficulties to the maintenance and repair of the equipment.

The connection and driving of the grab bucket and the driving mechanism of the bridge grab crane are all completed by wire ropes, and the connection between the grab bucket and the driving mechanism belongs to a flexible connection. After the grab bucket completes the slag grabbing operation in the filter tank, it needs to run to the top of the slag transport vehicle for the slag unloading operation. After the trolley mechanism of the grab crane runs to the top of the slag transport truck and stops, the grab will swing slightly due to inertia, and it will inevitably occur when unloading. additional workload for on-site workers.

For bridge-type grab cranes, the lifting and lowering of the grab is driven by the wire rope, and the height of the grab is difficult to accurately control. When the grab grabs slag, it is easy to cause damage to the filter material structure in the filter tank, which seriously affects the filtration effect. The filtration system of the slag process has an important impact.

Utility model content

In order to solve the problems of poor slag grabbing accuracy and difficult maintenance of the above-mentioned bridge-type grab crane, the utility model provides a precise slag grabbing system for a blast furnace water slag bottom filter tank, which is convenient for maintenance. The low-profile system for cleaning slag particles in the bottom filter solves the problem of swinging and scattering of the grab of the bridge-type grab crane, and can accurately grasp the slag to avoid damaging the filter material structure of the bottom filter.

The technical scheme adopted by the utility model to solve its technical problems is:

An accurate slag grabbing system for a blast furnace water slag bottom filter tank comprises a cart track, a cart mechanism, a trolley track, a cart mechanism and a slag digging device arranged in sequence, and the slag digging device comprises a mounting base, a first swing arm, The second swing arm and the grab mechanism, the installation base is connected with the trolley mechanism through the rotating device, the slag digging device can rotate around the rotation axis, the rotation axis is in an upright state, and the grab mechanism can move to the lower part of the cart track or the trolley mechanism Above, the grab mechanism includes two grabs symmetrically arranged on the left and right, and the lower parts of the two grabs can be opened or closed.

The total height of the cart track, cart mechanism, trolley track, cart mechanism and mounting base is 1.5m-2.5m.

The blast furnace water slag bottom filter tank precise slag grabbing system further includes water retaining walls, the water retaining walls are located on both sides outside the bottom filter tank, the two cart rails are correspondingly located on the two water retaining walls, the cart rails and the retaining walls are located on the two water retaining walls. The water walls all extend along the length of the bottom filter, and the height of the retaining wall is 1-2 meters.

The rotating device is located on the trolley mechanism. The rotating device has an upright cylindrical structure or a cylindrical structure. The trolley mechanism is provided with a rotating driving device. The rotating driving device can drive the rotating device to rotate. The axis of the rotating device coincides with the axis of rotation .

When the grab mechanism is at the lowest point, the grab mechanism can dig and clean the slag particles at the bottom of the bottom filter tank; when the grab mechanism is at the highest point, the grab mechanism can unload the slag truck.

The installation base, the first swing arm, the second swing arm and the grab mechanism are hinged in sequence, the first swing arm is a curved structure, the connection between the first swing arm and the installation base is located on the peripheral side of the installation base, and the installation base and the first swing arm are in a curved structure. A first hydraulic cylinder is connected between the arms, the first hydraulic cylinder can drive the first swing arm to swing, a second hydraulic cylinder is connected between the first swing arm and the second swing arm, and the second hydraulic cylinder can drive the second swing arm swing.

The grab mechanism also includes a hanging support, an opening and closing hydraulic cylinder and a grab support which are connected in sequence from top to bottom. The hanging support is hinged with the second swing arm, and the upper parts of the two grabs are hinged with the grab support. The upper parts of the two grab buckets are hinged with the cylinders of the opening and closing hydraulic cylinders through the grab connecting rods, and the opening and closing hydraulic cylinders can expand or close the lower parts of the two grab buckets.

The two grab buckets are mirror images of each other. The grab bucket contains two parallel and spaced end plates. An outer peripheral plate is arranged between the two end plates. The lower part of the end plate is connected with a long push plate. When the lower part is closed, the length direction of the elongated push plate is parallel to the horizontal plane, the lower side of the elongated push plate is parallel to the horizontal plane, and the lower side of the elongated push plate is flush with the lower end of the end plate.

The precise slag grabbing system of the blast furnace water slag bottom filter also includes a grab mechanism control system, which includes a grab mechanism horizontal position control system, a grab mechanism height position control system, and a grab mechanism slag digging and slag discharge action. Control System.

The horizontal position control system of the grab mechanism includes a cart mechanism control module and a trolley mechanism control module. The cart mechanism control module can control the position of the cart mechanism on the cart track, and the cart mechanism control module can control the cart mechanism on the cart track. Position; the height position control system of the grab mechanism includes a first hydraulic cylinder control module and a second hydraulic cylinder control module, the first hydraulic cylinder control module can control the telescopic length of the first hydraulic cylinder, and the second hydraulic cylinder control module can control the second hydraulic cylinder control module. The telescopic length of the hydraulic cylinder; the slag unloading action control system of the grab mechanism includes an opening and closing hydraulic cylinder control module and a material rushing action control module. Make the grab mechanism push the slag particles to form accumulation.

The beneficial effects of the present utility model are:

1. The precise slag grabbing system of the blast furnace slag bottom filter is a low-profile precision slag excavation system. The main part of the blast furnace slag bottom filter precise slag grabbing system is located on the retaining wall of the bottom filter (the The height is generally less than 2 meters), the overall height is low, and it is easy to maintain.

2. Effectively solve the common grab bucket swing problem of ordinary grab bucket cranes, and avoid the occurrence of material scattering.

3. By controlling the extension length of the hydraulic cylinder, the precise control of the height of the grab mechanism can be realized, so as to avoid that the height of the grab mechanism is too low to damage the filter material structure of the bottom filter during slag digging.

4. It is easy to realize intelligent control of slag excavation system by hydraulic drive.

5. The hydraulic slag excavation system adopts hydraulic drive, with stable action, fast response of the equipment, high-speed start-up and frequent reversal, which can greatly improve the work efficiency of slag excavation and slag unloading.

6. When the thickness of the slag particles at the bottom of the bottom filter is not large, if the bridge grab crane is used, the slag removal efficiency will be very low at this time; while the grab uses the swing arm and the hydraulic cylinder for rigid connection, which can reduce the thickness of the slag particles. The action of rushing material is carried out when it is not young, and the slag particles are piled up before the slag cleaning work is carried out, which greatly improves the work efficiency.

7. The utility model can be applied not only to the new water slag system, but also to the technical transformation of the original water slag system, and can completely solve many problems of the existing steel wire rope bridge type grab crane.

8. The utility model can complete the slag particle cleaning operation more efficiently through the redesign of the excavator actuator (bucket part) and the material rushing function of the grab bucket.

Description of drawings

The accompanying drawings forming a part of the present application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention.

FIG. 1 is a schematic diagram of the precise slag grabbing system of the blast furnace water slag bottom filter tank according to the present invention during slag digging operation.

FIG. 2 is a schematic diagram of the precise slag grabbing system of the blast furnace water slag bottom filter according to the present invention during the slag unloading operation.

Figure 3 is a schematic diagram of a slag excavation device.

Figure 4 is a schematic diagram of the connection between the slag excavating device and the trolley mechanism.

Fig. 5 Schematic diagram of two grab buckets when the lower part is opened.

Figure 6 Schematic view of the lower part of the two grab buckets when closed.

7 is a schematic diagram of the control part of the precise slag grabbing system of the blast furnace water slag bottom filter according to the present invention.

Fig. 8 is a schematic diagram when a long push plate is arranged on the lower part of the two grab buckets.

1. Cart track; 2. Cart mechanism; 3. Trolley track; 4. Trolley mechanism; Control System;

41. Rotary device; 42. Rotary drive device;

51. Installation base; 52. The first swing arm; 53, The second swing arm; 54, The grab mechanism; 55, The first hydraulic cylinder; 56, The second hydraulic cylinder;

81. Water retaining wall;

91. Control system for horizontal position of grab mechanism; 92. Control system for height position of grab mechanism; 93. Control system for dredging and unloading action of grab mechanism;

541, hanging support; 542, opening and closing hydraulic cylinder; 543, grab bracket; 544, grab connecting rod; 545, grab bucket; 546, end plate; 547, peripheral plate; 548, long push plate;

911, cart mechanism control module; 912, trolley mechanism control module; 921, first hydraulic cylinder control module; 922, second hydraulic cylinder control module; 931, opening and closing hydraulic cylinder control module; 932, rushing action control module.

Detailed ways

It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

An accurate slag grabbing system for a blast furnace water slag bottom filter tank includes a cart track 1, a cart mechanism 2, a trolley track 3, a cart mechanism 4 and a slag digging device 5, which are sequentially connected from bottom to top, and the slag digging device 5 includes sequentially connected The installation base 51 , the first swing arm 52 , the second swing arm 53 and the grab mechanism 54 , the installation base 51 is connected to the trolley mechanism 4 through the rotating device 41 , and the slag digging device 5 can rotate around the rotation axis L, the rotation axis L is the upright state, the grab mechanism 54 can move to the bottom of the cart track 1 or the top of the trolley mechanism 4 , the grab mechanism 54 includes two grabs 545 symmetrically arranged on the left and right, and the lower parts of the two grabs 545 can be opened or closed, as shown in Figures 1 to 4.

The slag excavation device 5 can use the excavator in the existing engineering equipment, remove the crawler or wheels, and combine it with the trolley mechanism 4, and transform its bucket into a grab mechanism 54, thereby forming a new precise slag excavation system, It can not only ensure the reliability of the operation of the new equipment, but also realize accurate slag digging to complete the slag particle cleaning operation, and can also reduce the overall height of the precise slag grabbing system in the blast furnace water slag bottom filter tank, which is easy to maintain.

In this embodiment, the precise slag grabbing system for the blast furnace slag bottom filter tank further includes a water retaining wall 81. The water retaining walls 81 are located on both sides outside the bottom filter tank 8, and the two cart rails 1 are fixed in a one-to-one correspondence. On the two retaining walls 81 , the cart track 1 and the retaining walls 81 both extend along the length direction of the bottom filter tank 8 , and the height of the retaining walls 81 is 1 to 2 meters. The total height of the cart track 1 , the cart mechanism 2 , the cart track 3 , the cart mechanism 4 and the mounting base 51 is 1.5 meters to 2.5 meters (for example, 2.2 meters). The precise slag grabbing system of the blast furnace water slag bottom filter tank is far lower than the rail surface height of the existing bridge grab crane (generally more than 10 meters).

In this embodiment, the cart mechanism 2 can move along the cart track 1 , the cart track 3 is fixed on the cart mechanism 2 , and the slag removal device 5 and the cart mechanism 4 can move synchronously along the cart track 3 . In the space rectangular coordinate system with X, Y and Z axes as coordinate axes, the length direction of the bottom filter 8 is parallel to the X axis direction, the width direction of the bottom filter 8 is parallel to the Y axis direction, and the rotation axis L is parallel to the direction of the Y axis. The Z-axis direction is parallel, that is, the cart mechanism 2 can move along the X-axis direction, and the slag excavating device 5 and the trolley mechanism 4 can move synchronously along the Y-axis direction. The cart track 1 , cart mechanism 2 , trolley track 3 and cart mechanism 4 can all use existing technology products.

According to the requirements of slag digging and slag unloading operations, the cart mechanism 2 can drive the slag excavation device 5 to reciprocate along the length direction of the bottom filter tank 8 through the cart track 1, and the cart mechanism 4 can pass the cart track 3 on the cart mechanism 2. The slag excavating device 5 is driven to reciprocate along the width direction of the bottom filter tank 8 .

In this embodiment, the rotating device 41 is installed on the trolley mechanism 4, and the rotating device 41 can have an upright cylindrical structure or a cylindrical structure. The trolley mechanism 4 is provided with a rotary driving device 42, and the rotary driving device 42 can drive the rotation The device 41 rotates, and the axis of the rotating device 41 coincides with the rotation axis L, thereby driving the slag dredging device 5 to rotate 360 degrees around the rotation axis L, so as to perform slag dredging at different positions in the bottom filter tank 8 Or unload the slag truck 7, as shown in Figure 1 to Figure 4.

In this embodiment, the slag digging device 5 can control the grab mechanism 54 to swing up and down and rotate. When the grab mechanism 54 is at the lowest point, the grab mechanism 54 can dig and clean the slag particles at the bottom of the bottom filter tank 8; When the grab mechanism 54 is located at the highest point, the grab mechanism 54 can perform the slag unloading operation on the slag transport vehicle 7 . A discharge hopper 6 can be provided on the ground outside the bottom filter tank 8. The discharge hopper 6 contains a discharge funnel and a funnel support arranged up and down. During the slag discharge operation, the slag transport vehicle 7 can be parked under the discharge funnel. The mechanism 54 discharges the excavated slag particles into the discharge funnel, and the slag particles pass through the discharge funnel and then fall into the slag transport vehicle 7 .

In this embodiment, the installation base 51 , the first swing arm 52 , the second swing arm 53 and the grab mechanism 54 are hinged in sequence, the first swing arm 52 is a curved structure, and the connection between the first swing arm 52 and the installation base 51 A first hydraulic cylinder 55 is connected between the mounting base 51 and the first swing arm 52, and the first hydraulic cylinder 55 can drive the first The swing arm 52 swings relative to the mounting base 51 , a second hydraulic cylinder 56 is connected between the first swing arm 52 and the second swing arm 53 , and the second hydraulic cylinder 56 can drive the second swing arm 53 relative to the first swing arm 52 swing. The first swing arm 52 and the second swing arm 53 can control the height of the grab mechanism 54 under the action of the first hydraulic cylinder 55 and the second hydraulic cylinder 56 .

In this embodiment, the grab mechanism 54 also includes a hanging support 541, an opening and closing hydraulic cylinder 542, and a grab support 543 connected in sequence from top to bottom. The hanging support 541 is hinged with the second swing arm 53, and the two The upper part of each grab 545 is hinged with the grab bracket 543 , and the upper part of the two grabs 545 is hinged with the cylinder of the opening and closing hydraulic cylinder 542 through the grab connecting rod 544 . The lower portion of the bucket 545 is opened or closed. When the opening and closing hydraulic cylinder 542 is extended, the lower parts of the two grab buckets 545 are opened; when the opening and closing hydraulic cylinder 542 is shortened, the lower parts of the two grab buckets 545 are closed. The slag grabbing and slag unloading operations of the grab bucket 545 can be realized by controlling the action of the opening and closing hydraulic cylinder 542 , as shown in FIG. 5 and FIG. 6 .

In this embodiment, the two grab buckets 545 are mirror images of each other. The grab bucket 545 includes two parallel and spaced end plates 546 . An outer peripheral plate 547 is arranged between the two end plates 546 . The plate 547 has an arc-shaped structure, and there are no digging teeth below the grab bucket 545 . When the lower parts of the two grab buckets 545 are opened, the lower ends of the two grab buckets 545 are separated from each other; when the lower parts of the two grab buckets 545 are closed, the lower ends of the two grab buckets 545 are combined with each other.

In this embodiment, the precise slag grabbing system for the blast furnace slag bottom filter also includes a grab mechanism control system 9, and the grab mechanism control system 9 includes a grab mechanism horizontal position control system 91 and a grab mechanism height position control system. 92 and the control system 93 for the dredging and unloading action of the grab bucket mechanism, as shown in FIG. 7 . Accurate slag digging and slag unloading operations are realized through the grab mechanism horizontal position control system 91 , the grab mechanism height position control system 92 , and the grab mechanism slag digging and slag unloading action control system 93 .

The horizontal position control system 91 of the grab mechanism includes a cart mechanism control module 911 and a cart mechanism control module 912. The cart mechanism control module 911 can control the position of the cart mechanism 2 on the cart track 1 (that is, in the X-axis direction). position), the trolley mechanism control module 912 can control the position of the trolley mechanism 4 on the trolley track 3 (ie, the position in the Y-axis direction). Furthermore, the horizontal position of the grab mechanism 54 is accurately controlled, and the slag digging operation at the bottom filter tank 8 and the slag unloading operation at the slag transport vehicle 7 are efficiently and accurately realized.

The grab mechanism height position control system 92 includes a first hydraulic cylinder control module 921 and a second hydraulic cylinder control module 922, the first hydraulic cylinder control module 921 can control the telescopic length of the first hydraulic cylinder 55, and the second hydraulic cylinder control module 922 The telescopic length of the second hydraulic cylinder 56 can be controlled. Judging the limit of the extension length of the second hydraulic cylinder 56 by the extension length of the first hydraulic cylinder 55 (or judging the limit of the extension length of the first hydraulic cylinder 55 by the extension length of the second hydraulic cylinder 56 ), realizing the control of the grab mechanism 54 The control of the height position (that is, the position in the Z-axis direction) avoids that the height of the grab mechanism 54 is too low to damage the filter material structure of the bottom filter during slag digging. The slag dredging and slag unloading action control system 93 of the grab mechanism includes an opening and closing hydraulic cylinder control module 931, which can control the opening and closing hydraulic cylinder 542 to expand and contract, so as to realize slag digging and slag unloading operations.

The grab mechanism slag digging and unloading action control system 93 also includes a rushing action control module 932. When the thickness of the slag particles at the bottom of the bottom filter tank 8 is small (for example, less than 500mm), the direct slag grabbing will greatly reduce the working efficiency of the equipment. Through the rushing action control module 932, the grab mechanism 54 can accumulate the slag particles through the rushing action and then carry out the slag cleaning work, thereby greatly improving the work efficiency. The rushing action control module 932 can make the grab mechanism 54 move at an appropriate height and along the X-axis direction or the Y-axis direction, so as to push the slag particles to form aggregates.

In order to improve the feeding efficiency, the end plate 546 may have a rectangular structure. When the lower parts of the two grab buckets 545 are closed, the lower side of the end plate 546 is parallel to the horizontal plane. Alternatively, the lower part of the end plate 546 can be connected with a long push plate 548 in layers. When the lower parts of the two grab buckets 545 are closed, the length direction of the long push plate 548 is parallel to the horizontal plane, and the lower side of the long push plate 548 Parallel to the horizontal plane, the lower side of the elongated push plate 548 is flush with the lower end of the end plate 546 , as shown in FIG. 8 .

The above descriptions are only specific examples of the present invention, and cannot limit the scope of implementation of the present invention. Therefore, the replacement of the equivalent components thereof, or the equivalent changes and modifications made according to the scope of the patent protection of the present invention, shall still belong to the scope of the present invention. Scope covered by this patent. In addition, technical features and technical features, technical features and technical solutions, and technical solutions and technical solutions in the present invention can be freely combined and used.

Claims (10)

1. An accurate slag grabbing system for a blast furnace water slag bottom filter tank is characterized in that the precise slag grabbing system for a blast furnace water slag bottom filter tank comprises a cart track (1), a cart mechanism (2), a trolley that are arranged in sequence. A track (3), a trolley mechanism (4) and a slag digging device (5), the slag digging device (5) comprises a mounting base (51), a first swing arm (52), a second swing arm (53) and The grab mechanism (54), the mounting base (51) is connected with the trolley mechanism (4) through the rotating device (41), and the slag digging device (5) can rotate around the rotation axis, and the rotation axis is in an upright state, and the grab mechanism ( 54) It can be moved to the bottom of the cart track (1) or the top of the trolley mechanism (4). The grab mechanism (54) includes two grabs (545) symmetrically arranged on the left and right, and the lower part of the two grabs (545) Can be opened or closed. 2. The precise slag grabbing system for blast furnace slag bottom filter tank according to claim 1, characterized in that the cart track (1), cart mechanism (2), trolley track (3), cart mechanism (4) and The total height of the mounting base (51) is 1.5m-2.5m. 3. The precise slag grabbing system of blast furnace water slag bottom filter tank according to claim 1, is characterized in that, described blast furnace water slag bottom filter tank precise slag grabbing system also comprises a water retaining wall (81), a water retaining wall (81) ) are located on both sides outside the bottom filter (8), the two cart rails (1) are correspondingly located on the two retaining walls (81), and the cart rails (1) and the water retaining wall (81) are located along the bottom The filter tank (8) extends in the length direction, and the height of the retaining wall (81) is 1-2 meters. 4. The precise slag grabbing system for blast furnace slag bottom filter tank according to claim 1, characterized in that the rotating device (41) is located on the trolley mechanism (4), and the rotating device (41) is an upright cylindrical structure or a circular In the cylindrical structure, the trolley mechanism (4) is provided with a rotary driving device (42), the rotary driving device (42) can drive the rotary device (41) to rotate, and the axis of the rotary device (41) coincides with the axis of rotation. 5. The precise slag grabbing system for blast furnace water slag bottom filter tank according to claim 1, characterized in that, when the grab bucket mechanism (54) is located at the lowest point, the grab bucket mechanism (54) is capable of catching the bottom filter tank (8) The slag particles at the bottom are dredged and cleaned; when the grab mechanism (54) is at the highest point, the grab mechanism (54) can perform the slag unloading operation on the slag transport vehicle (7). 6. The precise slag grabbing system for blast furnace water slag bottom filter tank according to claim 1, characterized in that, the installation base (51), the first swing arm (52), the second swing arm (53) and the grab mechanism ( 54) Hinged in sequence, the first swing arm (52) is a curved structure, the connection between the first swing arm (52) and the mounting base (51) is located on the peripheral side of the mounting base (51), the mounting base (51) and the first A first hydraulic cylinder (55) is connected between the swing arms (52), the first hydraulic cylinder (55) can drive the first swing arm (52) to swing, and the first swing arm (52) and the second swing arm (53) A second hydraulic cylinder (56) is connected therebetween, and the second hydraulic cylinder (56) can drive the second swing arm (53) to swing. 7. The precise slag grabbing system for blast furnace slag bottom filter tank according to claim 6, characterized in that, the grab mechanism (54) further comprises a hanging support (541) connected in sequence from top to bottom, an opening and closing hydraulic pressure The cylinder (542) and the grab bracket (543), the hanging support (541) is hinged with the second swing arm (53), the upper parts of the two grabs (545) are hinged with the grab bracket (543), the two The upper part of the grab bucket (545) is hinged with the cylinder barrel of the opening and closing hydraulic cylinder (542) through the grab connecting rod (544), and the opening and closing hydraulic cylinder (542) can expand and contract the lower part of the two grab buckets (545). or closed. 8. The precise slag grabbing system for blast furnace water slag bottom filter tank according to claim 1, wherein the two grab buckets (545) are mirror images of each other, and the grab bucket (545) contains two parallel and spaced end plates (545). 546), an outer peripheral plate (547) is arranged between the two end plates (546), and a long push plate (548) is stacked and connected to the lower part of the end plate (546), when the lower part of the two grab buckets (545) is closed When the length of the elongated push plate (548) is parallel to the horizontal plane, the lower side of the elongated push plate (548) is parallel to the horizontal plane, and the lower side of the elongated push plate (548) is parallel to the lower end of the end plate (546). flush. 9. The precise slag grabbing system for a blast furnace water slag bottom filter tank according to claim 1, wherein the precise slag grabbing system for the blast furnace water slag bottom filter tank further comprises a grab mechanism control system (9), a grab mechanism The control system (9) includes a grab mechanism horizontal position control system (91), a grab mechanism height position control system (92) and a grab mechanism slag dredging and slag discharge action control system (93). 10. The precise slag grabbing system of blast furnace water slag bottom filter tank according to claim 9, is characterized in that, The grab mechanism horizontal position control system (91) includes a cart mechanism control module (911) and a trolley mechanism control module (912), and the cart mechanism control module (911) can control the cart mechanism (2) on the cart track (1). ), the trolley mechanism control module (912) can control the position of the trolley mechanism (4) on the trolley track (3); The height position control system (92) of the grab mechanism includes a first hydraulic cylinder control module (921) and a second hydraulic cylinder control module (922), and the first hydraulic cylinder control module (921) can control the movement of the first hydraulic cylinder (55). telescopic length, the second hydraulic cylinder control module (922) can control the telescopic length of the second hydraulic cylinder (56); The slag dredging and unloading action control system (93) of the grab mechanism includes an opening and closing hydraulic cylinder control module (931) and a material rushing action control module (932), and the opening and closing hydraulic cylinder control module (931) can control the opening and closing hydraulic cylinder (542). ) telescopic, and the material rushing action control module (932) enables the grab mechanism (54) to push the slag particles to form accumulations.

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