CN218115485U - Mud gun mud beating device capable of monitoring mud pouring condition - Google Patents

Abstract

The utility model provides a mud gun mud-beating device capable of monitoring mud-pouring conditions, which comprises a gun head, a mud cylinder, a mud plug, a hydraulic mud-pushing mechanism, a mud-pouring monitoring mechanism, a mud-beating indicating mechanism and a PLC control system; the mud pouring monitoring mechanism comprises a fixed plate, a reflecting plate, compression springs and a laser range finder, wherein the fixed plate is an annular metal plate of which the inner edge is welded on the outer wall of the hydraulic oil cylinder, a gap is reserved between the outer edge of the fixed plate and the inner wall of the mud cylinder, the annular reflecting plate capable of sliding along the outer wall of the hydraulic oil cylinder is arranged between the fixed plate and the rear end face of the mud plug, and the reflecting plate is connected with the fixed plate through a plurality of groups of compression springs which are uniformly distributed in the circumferential direction; a plurality of laser range finders are uniformly distributed on the rear end cover of the mud cylinder, and laser emitting ports of the laser range finders correspond to gaps between the outer edge of the fixing plate and the inner wall of the mud cylinder. The utility model has the advantages of simple structure and reasonable design, whether accessible time judge take place to fall mud and fall the size of mud volume, the operating personnel of being convenient for effectively adjusts the volume of beating mud.

Description

Mud gun mud beating device capable of monitoring mud pouring condition

Technical Field

The utility model relates to a mud gun mud beating technical field, in particular to can monitor mud gun mud beating device of mud situation of falling.

Background

The mud gun belongs to the necessary stokehole equipment in the smelting industry, and has the function of quickly and accurately blocking a taphole after iron discharge so that a blast furnace can quickly enter the next cycle of operation. The traditional mud foaming and mud beating device comprises a gun head, a mud cylinder, a mud plug, a hydraulic mud pushing mechanism, a mud beating indicating mechanism, a PLC (programmable logic controller) control system and the like, wherein the gun mud enters the mud cylinder from a mud inlet, the hydraulic mud pushing mechanism pushes the mud plug to move, and the gun mud is beaten into a blast furnace taphole through the gun head to be plugged; the hydraulic mud pushing mechanism is controlled by a PLC control system, and the mud beating amount of the mud gun is monitored and displayed by the mud beating indicating mechanism, so that an operator can judge the mud beating condition.

In use, the mud gun mud beating device is used for a long time, and then the mud pouring phenomenon frequently occurs, so that the service life of the mud beating device is seriously influenced. The main reason is that the mud cylinder works in a high-temperature area for a long time and is cooled by frequent water pumping, and the cold and hot alternation can generate micro deformation to cause the abrasion of the inner surface of the mud cylinder; meanwhile, due to the fact that the mud plug and the mud cylinder move relatively with the stemming for a long time, high-hardness particles contained in the stemming rub back and forth, abrasion of the outer surface of the mud plug and the inner surface of the mud cylinder is further aggravated, and the gap between the mud plug and the inner surface of the mud cylinder is too large. After the pressurized, the stemming is extruded from mud jar and mud plug gap in a large number, results in the big gun head to go out mud volume and diminishes, and the tap hole is not gone up to the stemming stifled, and the blast furnace will be compelled to reduce pressure and block up mouthful, and it is more serious to pour mud, and the big gun head is burnt out on stifled furnace gate, and the rail is burnt out on the rail that the molten iron flowed to the stove platform from the furnace gate under, influences the normal transport of blast furnace iron jar, causes bigger accident.

The existing mud gun mud beating device cannot monitor the mud pouring phenomenon, the equipment mud pouring is usually found only by the accident that the iron outlet is not blocked, the shutdown maintenance is carried out, the maintenance time is long, and the continuous production of iron making is seriously influenced. Therefore, it is necessary to improve the existing mud gun and the mud beating device.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned problem that prior art exists, the utility model aims to provide a can monitor mud gun mud beating device of the mud condition of falling.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a mud gun mud beating device capable of monitoring mud pouring conditions comprises a gun head, a mud cylinder, a mud plug, a hydraulic mud pushing mechanism, a mud pouring monitoring mechanism, a mud beating indicating mechanism and a PLC (programmable logic controller) control system; the mud pouring monitoring mechanism comprises a fixed plate, a reflecting plate, compression springs and a laser range finder, wherein the fixed plate is an annular metal plate of which the inner edge is welded on the outer wall of the hydraulic oil cylinder, a gap is reserved between the outer edge of the fixed plate and the inner wall of the mud cylinder, the annular reflecting plate is arranged between the fixed plate and the rear end face of the mud plug, the inner edge of the reflecting plate is in clearance fit with the hydraulic oil cylinder, the outer edge of the reflecting plate is in clearance fit with the inner wall of the mud cylinder, and the reflecting plate is connected with the fixed plate through a plurality of groups of compression springs which are uniformly distributed in the circumferential direction; the rear end cover of the mud cylinder is uniformly provided with a plurality of laser range finders, a laser emitting port of each laser range finder corresponds to a gap between the outer edge of the fixing plate and the inner wall of the mud cylinder, and a signal output end of each laser range finder is in transmission connection with a signal input end of the PLC control system.

The utility model discloses a further improvement lies in: the width of a gap between the outer edge of the fixed plate and the inner wall of the mud cylinder is 10cm to 15cm.

The utility model discloses a further improvement lies in: a plurality of bosses are uniformly distributed on the rear end cover of the mud cylinder in the circumferential direction, the laser range finder is fixedly mounted in the center of the top of each boss, and a through hole for laser to pass through is formed in the center of each boss.

The utility model discloses a further improvement lies in: the outside of laser range finder is provided with the safety cover that is used for keeping apart high temperature and dust.

The utility model discloses a further improvement lies in: the protective cover comprises a first heat insulation layer, a first vacuum layer, a second heat insulation layer and a second vacuum layer which are sequentially arranged from outside to inside, wherein ceramic fibers are tightly filled in the first heat insulation layer, and superfine glass wool is tightly filled in the second heat insulation layer.

The utility model discloses a further improvement lies in: the outside of boss still is provided with the external screw thread, second vacuum layer inboard below sets up the internal thread with external screw thread matched with.

The utility model discloses a further improvement lies in: the mud beating indicating mechanism comprises a traction steel wire rope and a pull rope displacement sensor; one end of the traction steel wire rope is fixed at the rear end of the fixing plate, and the other end of the traction steel wire rope penetrates through the mud cylinder rear end cover and is connected with a pull rope displacement sensor fixed on the rear end cover.

The utility model discloses a further improvement lies in: and the signal output end of the pull rope displacement sensor is connected with the signal input end of the PLC control system, and the signal output end of the PLC control system is connected with the signal input end of the display screen.

Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:

the utility model provides a can monitor mud gun mud beating device of mud situation of falling, simple structure, reasonable in design contrast through two real-time data of laser range finder and stay cord displacement sensor monitoring, judge whether take place the mud and fall the size of mud volume, and the operating personnel of being convenient for effectively adjusts the mud volume of beating, ensures that the mud of beating can effectively shutoff blast furnace taphole, ensures going on smoothly of blast furnace ironmaking.

The utility model discloses a fixed plate and reflecting plate are equivalent to and do a heavy separation more in the mud stopper rear side, and the secondary shutoff to falling mud is formed in hydraulic cylinder department to a certain extent, avoids falling mud and continuously extrudes in the clearance of hydraulic cylinder and mud jar, and makes the volume of beating mud cause bigger error, has improved the life of equipment.

The utility model discloses the equipartition sets up a plurality of laser range finders on mud jar rear end cover, monitors the mud condition of falling of the different positions of circumference, can in time distinguish the mud condition of falling of each position, and the practicality is strong. Meanwhile, a protective cover with multiple heat insulation effects is arranged outside the laser range finder, so that the influence of a high-temperature dust environment on the precision of the laser range finder is avoided, and the normal operation and high precision can be still kept under a long-time operation state.

Drawings

FIG. 1 is a schematic view of the present invention in a partial cross-sectional structure;

fig. 2 is a schematic rear view of the present invention;

FIG. 3 is a schematic structural view of a laser range finder and a protective cover portion;

FIG. 4 is a partial schematic structural view of a sludge pouring monitoring mechanism in a normal operation state of the equipment;

fig. 5 is a partial structural schematic diagram of the sludge pouring monitoring mechanism in a sludge pouring state.

In the drawing, 1 part of a gun head, 2 parts of a mud cylinder, 3 parts of a mud plug, 4-1 parts of a hydraulic oil cylinder, 4-2 parts of a piston, 4-3 parts of a piston rod, 5-1 parts of a fixing plate, 5-2 parts of a reflecting plate, 5-3 parts of a compression spring, 5-4 parts of a laser range finder, 5-5 parts of a boss, 5-5-1 parts of a through hole, 5-6 parts of a protective cover, 5-6-1 parts of a first heat insulation layer, 5-6-2 parts of a first vacuum layer, 5-6-3 parts of a second heat insulation layer, 5-6-4 parts of a second vacuum layer, 6-1 parts of a traction steel wire rope, 6-2 parts of a pull rope displacement sensor, 7 parts of a mud inlet, 8 parts of a rear end cover, 9 parts of a gun mud.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

A mud gun mud beating device capable of monitoring mud pouring conditions is shown in figures 1-5 and comprises a gun head 1, a mud cylinder 2, a mud plug 3, a hydraulic mud pushing mechanism, a mud pouring monitoring mechanism, a mud beating indicating mechanism and a PLC control system (not shown). The mud cylinder 2 is internally provided with a mud plug 3 which can slide along the length direction of the mud cylinder 2, and the rear end of the mud plug 3 is connected with a hydraulic mud pushing mechanism. The hydraulic mud pushing mechanism comprises a hydraulic oil cylinder 4-1 fixedly connected with a mud plug 3, a piston 4-2 arranged in the hydraulic oil cylinder 4-1, and a piston rod 4-3 fixedly connected with the piston 4-2 and penetrating through a rear end cover 8 of the mud cylinder 2, wherein an oil inlet channel and an oil return channel are arranged in the piston rod 4-3, and the hydraulic oil cylinder 4-1 moves back and forth relative to the piston 4-2 through the inlet and outlet of oil liquid so as to drive the mud plug 3 to move. The top of the mud cylinder 2 is provided with a mud inlet 7, and the stemming enters the mud cylinder 2 through the mud inlet 7, pushes the mud plug 3 to move through the hydraulic mud pushing mechanism, and is squeezed into the blast furnace taphole through the gun head 1 to be plugged.

The mud pouring monitoring mechanism comprises a fixed plate 5-1, a reflecting plate 5-2, a compression spring 5-3 and a laser range finder 5-4, wherein the fixed plate 5-1 is an annular metal plate, the inner edge of the fixed plate is welded on the outer wall of a hydraulic oil cylinder 4-1, and a clearance of 10cm to 15cm is reserved between the outer edge of the fixed plate 5-1 and the inner wall of a mud cylinder 2. An annular reflecting plate 5-2 is further arranged between the fixed plate 5-1 and the rear end face of the mud plug 3, the reflecting plate 5-2 is sleeved on the outer side of the hydraulic oil cylinder 4-1, the inner edge of the reflecting plate is in clearance fit with the hydraulic oil cylinder 4-1, the outer edge of the reflecting plate is in clearance fit with the inner wall of the mud cylinder 2, and the reflecting plate 5-2 can slide back and forth along the inner wall of the mud cylinder 2. The fixed plate 5-1 and the reflecting plate 5-2 are connected through a plurality of groups of compression springs 5-3 which are uniformly distributed in the circumferential direction. A plurality of laser range finders 5-4 are uniformly distributed on a rear end cover 8 of the mud cylinder 2, a laser emitting port of each laser range finder 5-4 corresponds to a gap between the outer edge of the fixed plate 5-1 and the inner wall of the mud cylinder 2, a laser beam emitted by each laser range finder 5-4 is irradiated on the reflecting plate 5-2, and is received by the photoelectric element after being reflected, and the distance between the reflecting plate 5-2 and the rear end cover 8 is measured through time difference. The signal output end of the laser range finder 5-4 is connected with the signal input end of the PLC control system, and distance data between the reflecting plate 5-2 and the rear end cover 8 are transmitted to the PLC control system in real time.

The laser range finders 5-4 are laser range finders 5-4 with power supplies, are small in size and are suitable for being arranged on the rear end cover 8 in a plurality of ways.

The number of the compression springs 5-3 is not less than eight, the number of the laser range finders 5-4 is not less than eight, the laser range finders 5-4 and the compression springs 5-3 are correspondingly arranged, and the measurement accuracy is higher.

The working environment of the mud beating device is a high-temperature dusty environment, so that the damage and the failure of the photoelectric element of the laser range finder 5-4 are easily caused. In order to ensure the precision of the laser range finder 5-4 and avoid high-temperature damage, a protective cover 5-6 for isolating high temperature and dust is arranged outside the laser range finder 5-4.

Specifically, a plurality of bosses 5-5 are uniformly distributed on a rear end cover 8 of the mud cylinder 2, a laser range finder 5-4 is fixedly arranged in the center of the top of the boss 5-5, and a through hole 5-5-1 for laser to pass through is formed in the center of the boss 5-5. The outer part of the boss 5-5 is also provided with an external thread.

The protective cover 5-6 is a cylindrical cover body, the protective cover 5-6 comprises a first heat insulation layer 5-6-1, a first vacuum layer 5-6-2, a second heat insulation layer 5-6-3 and a second vacuum layer 5-6-4 which are sequentially arranged from outside to inside, internal threads are arranged below the inner side of the second vacuum layer 5-6-4, and the boss 5-5 is connected with the protective cover 5-6 through threads. Ceramic fibers are filled in the first heat insulation layer 5-6-1, superfine glass wool is filled in the second heat insulation layer 5-6-3, high-temperature dust under working conditions is effectively isolated through the alternate arrangement of inorganic heat insulation materials and vacuum heat insulation layers, and the distance measurement precision of the laser distance measuring instrument 5-4 is ensured.

The mud beating indicating mechanism comprises a traction steel wire rope 6-1 and a pull rope displacement sensor 6-2. One end of the traction steel wire rope 6-1 is fixed at the rear end of the fixing plate 5-1, and the other end of the traction steel wire rope 6-1 penetrates through the rear end cover 8 of the mud cylinder 2 and is connected with the pull rope displacement sensor 6-2 fixed on the rear end cover 8. And the signal output end of the pull rope displacement sensor 6-2 is connected with the signal input end of the PLC control system, and the signal output end of the PLC control system is connected with the signal input end of the display screen. When the equipment runs, the mud plug 3 drives the traction steel wire rope 6-1 to move, the stay rope displacement sensor 6-2 monitors the length of the traction steel wire rope 6-1 in real time and transmits the length to the PLC control system, the mud beating amount is calculated and converted by the PLC control system, mud beating amount data is transmitted in real time and displayed on a display screen, and an operator can clearly acquire the mud beating amount data and visually judge the running condition of the equipment.

The utility model discloses a working process does:

the stemming is sent into the mud cylinder through a stemming inlet, a hydraulic mud pushing mechanism is started, a mud plug is pushed by a hydraulic oil cylinder to drive a traction steel wire rope to move, a pull rope displacement sensor transmits length data of the traction steel wire rope to a PLC control system, the mud beating amount is calculated, and the mud is transmitted and displayed on a display screen. Meanwhile, the hydraulic oil cylinder drives the fixing plate to move forwards synchronously, the reflecting belt also moves synchronously, and the laser range finder monitors the distance from the reflecting plate to the rear end cover of the mud cylinder and transmits the distance to the PLC control system.

Under the normal operation condition of the equipment, the distance between the reflecting plate and the rear end cover of the mud cylinder (measured by a laser range finder) and the distance between the fixing plate and the rear end cover of the mud cylinder (measured by a stay cord displacement sensor) are fixed values. If the mud pouring phenomenon occurs, the stemming is extruded out through a gap between the mud plug and the inner wall of the mud cylinder, the reflecting plate is extruded, the compression spring is applied with force, the reflecting plate is displaced towards the direction of the fixed plate, and the distance between the reflecting plate and the rear end cover of the mud cylinder is reduced. And the PLC control system analyzes the difference between the two data, and can judge whether the mud pouring occurs or not.

Because laser range finder has a plurality ofly, circumference evenly arranges on mud jar rear end covers, can survey from a plurality of different positions. According to which laser range finder transmitted data diminishes, can judge which position has taken place to fall mud, the later stage maintenance of being convenient for. Meanwhile, the size of the mud pouring amount can be judged according to the data change difference of the laser range finder, and the size of the mud pouring amount can be adjusted according to the size of the mud pouring amount so as to ensure the effective plugging of the blast furnace taphole.

Because intermittent type cooperation between reflecting plate and hydraulic cylinder, the mud jar inner wall can carry out the secondary shutoff to pouring mud. If the distance value detected by the laser range finder is kept constant after being gradually shortened, the situation that the gap between the rear end of the mud plug and the reflecting plate is filled with the poured mud can be basically determined, and the compression spring is compressed, so that a larger gap is proved to exist between the mud plug and the inner wall of the mud cylinder; at this time, the mud beating amount can be increased or the maintenance of the equipment can be scheduled according to the specific condition of the equipment.

The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.

Claims (8)

1. The utility model provides a can monitor mud gun mud beating device of mud situation that falls which characterized in that: the mud-pouring device comprises a gun head (1), a mud cylinder (2), a mud plug (3), a hydraulic mud-pushing mechanism, a mud-pouring monitoring mechanism, a mud-beating indicating mechanism and a PLC control system; the hydraulic mud pushing mechanism comprises a hydraulic oil cylinder (4-1), a piston (4-2) and a piston rod (4-3), and the front end of the hydraulic oil cylinder (4-1) is fixedly connected with the rear end of the mud plug (3); the mud pouring monitoring mechanism comprises a fixing plate (5-1), a reflecting plate (5-2), compression springs (5-3) and a laser range finder (5-4), wherein the fixing plate (5-1) is an annular metal plate with an inner edge welded on the outer wall of the hydraulic oil cylinder (4-1), a gap is reserved between the outer edge of the fixing plate (5-1) and the inner wall of the mud cylinder (2), an annular reflecting plate (5-2) is arranged between the fixing plate (5-1) and the rear end face of the mud plug (3), the inner edge of the reflecting plate (5-2) is in clearance fit with the hydraulic oil cylinder (4-1), the outer edge of the reflecting plate is in clearance fit with the inner wall of the mud cylinder (2), and the reflecting plate (5-2) is connected with the fixing plate (5-1) through a plurality of groups of compression springs (5-3) which are uniformly distributed in the circumferential direction; the rear end cover (8) of the mud jar (2) is uniformly provided with a plurality of laser range finders (5-4), a laser emitting opening of each laser range finder (5-4) corresponds to a gap between the outer edge of the fixing plate (5-1) and the inner wall of the mud jar (2), and a signal output end of each laser range finder (5-4) is in transmission connection with a signal input end of the PLC control system.

2. The mud gun mud-beating device capable of monitoring mud-pouring conditions according to claim 1, wherein: the width of a gap between the outer edge of the fixed plate (5-1) and the inner wall of the mud cylinder (2) is 10cm to 15cm.

3. The mud gun mud-shooting device capable of monitoring the mud pouring condition according to claim 1, wherein: a plurality of bosses (5-5) are uniformly distributed on a rear end cover (8) of the mud cylinder (2) in the circumferential direction, a laser range finder (5-4) is fixedly installed in the center of the tops of the bosses (5-5), and a through hole (5-5-1) for laser to pass through is formed in the center of each boss (5-5).

4. A mud gun mud-beating device capable of monitoring mud-pouring condition according to claim 3, characterized in that: and a protective cover (5-6) for isolating high temperature and dust is arranged outside the laser range finder (5-4).

5. The mud gun mud-beating device capable of monitoring mud-pouring conditions according to claim 4, wherein: the protective cover (5-6) comprises a first heat insulation layer (5-6-1), a first vacuum layer (5-6-2), a second heat insulation layer (5-6-3) and a second vacuum layer (5-6-4) which are sequentially arranged from outside to inside, ceramic fibers are tightly filled in the first heat insulation layer (5-6-1), and superfine glass wool is tightly filled in the second heat insulation layer (5-6-3).

6. The mud gun mud-beating device capable of monitoring mud-pouring conditions according to claim 5, wherein: the outer part of the boss (5-5) is also provided with an external thread, and an internal thread matched with the external thread is arranged below the inner side of the second vacuum layer (5-6-4).

7. The mud gun mud-shooting device capable of monitoring the mud pouring condition according to claim 1, wherein: the mud beating indicating mechanism comprises a traction steel wire rope (6-1) and a pull rope displacement sensor (6-2); one end of the traction steel wire rope (6-1) is fixed at the rear end of the fixing plate (5-1), and the other end of the traction steel wire rope (6-1) penetrates through the rear end cover (8) of the mud cylinder and is connected with a pull rope displacement sensor (6-2) fixed on the rear end cover (8).

8. The mud gun mud-shooting device capable of monitoring the mud pouring condition according to claim 7, wherein: and the signal output end of the pull rope displacement sensor (6-2) is connected with the signal input end of the PLC control system, and the signal output end of the PLC control system is connected with the signal input end of the display screen.

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