JPH04222392A - Forming equipment for irregular-shaped refractory - Google Patents

Abstract

PURPOSE:To restrain the generation of powdered dust and improve working efficiency by making material handling after receiving the material continuous, automatic and airtight. CONSTITUTION:A material for irregular refractory is received into the specified address of a container warehouse 4 by a transfer device 6 under a condition that the material is sealed in a container 2 based on a command from a microcomputer 38. The transfer device 6 takes a predetermined container 2 out based on a material charging command from the microcomputer 38 and transfers the container 2 to a sealed type receiving table 10. Subsequently, the sealed type receiving table 10, accommodating a load cell, a seal opening device 12 and a sealed conveyer 14 are operated in conjunction with each other whereby predetermined material, metered by the load cell, is thrown into a kneading device 16 while proper amount of water is added from a water tank 20. The kneaded material is poured into a section to be lined through a traversing chute 24 and is made uniform by means of a shaking device 36. The height of the poured form body 32 is measured by a height measuring device 34 and the measured value is inputted into the microcomputer 38.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a construction device for monolithic refractories, and more particularly to a construction device for pouring monolithic refractories into a molten metal container with excellent work efficiency. It can be widely used in the construction of monolithic refractory pouring vessels for storing hot metal or molten steel, such as vacuum degassing tanks and tundishes.

0002

[Prior Art] When constructing a monolithic refractory into a molten metal container, a formwork (also called a core) is placed at a predetermined position of the container, and there is no gap between the formwork and the permanently stretched refractory of the container. BACKGROUND ART Recently, so-called pouring construction, in which a construction body is formed by pouring a shaped refractory, has been frequently carried out.

Regarding pouring construction of monolithic refractories,
Various techniques have been disclosed in the past. For example, the special public official court in 1977-
No. 21363 is a method in which monolithic refractories are vibrated and kneaded in advance to form a dense slurry, poured into a container, and then filled by further vibration.

[0004] Furthermore, Japanese Patent Publication No. 61-2870 discloses a distributor used for pouring monolithic refractory materials, in which a rotating chute is provided at the top of a conical distribution device. but,
Although these techniques require large equipment,
This is related to a part of the pouring construction process, and it is difficult to say that the work hours have been reduced or the work environment has been improved commensurately with the installation of such large equipment, and problems remain.

[0005] Furthermore, Japanese Utility Model Application No. 63-60894 aims to automate the pouring work by installing a pouring device for amorphous refractory material and a vibrator that can be moved up and down. However, these improvements only improve a part of the pouring construction process, so if the material is handled using conventional methods such as 25 kg paper bags or 500 kg flexible containers, the receiving, handling, and empty bag handling of these paper bags and flexible containers will be affected. The current situation is that it is extremely difficult to achieve fundamental manpower, time, and resource savings in the overall construction process, as well as to improve the working environment, as processing, etc., inevitably occur.

[0006]

[Problems to be Solved by the Invention] An object of the present invention is to solve the above-mentioned problems of the prior art, and to make the material handling after receiving the material continuous, automated, and hermetically sealed, thereby eliminating the need for an operator to generate dust. The purpose of the present invention is to provide a construction device for monolithic refractories that allows all pouring work to be carried out by humans.

[0007]

[Means for Solving the Problems] The present invention aims to reduce the number of people, time, resources, and improve the working environment by improving equipment for pouring work. Improvements are taken into account throughout the entire process from pouring to pouring.

The gist of the present invention is as follows. That is, in a construction device for pouring monolithic refractories into a molten metal container, there is a container warehouse for accommodating containers of monolithic refractory materials, a container transfer device for receiving and discharging containers into the container warehouse, and a container for discharging the containers. an unsealing and weighing device that unseals and cuts out and weighs the monolithic refractory material; a sealed conveyor that transports the cut material to a kneading device; and a kneading device that mixes moisture into the transported material and kneads it. A moisture supply device that supplies moisture to the kneading device, a transport conveyor that transports the water-containing material to a pouring device, a pouring device that pours the transported water-containing material into a lined portion of the molten metal container, and the molten metal container. a height measuring device for measuring the top surface height of a construction body formed by pouring into the kneading device; adjusting the cutting amount of the unsealing weighing device based on the amount of water supplied in the kneading device and the measured value of the height measuring device; A control device for controlling each device.

The details of the invention will be explained by means of embodiments shown in the accompanying drawings. Figure 1 is an overall view showing the device of the present invention, Figure 2
, 3, 4, and 5 are partially enlarged views of FIG. 1, FIG. 2 is a material section, FIG. 3 is a kneading section, FIG. 4 is a pouring section, and FIG. 5 is a control section. Containers for monolithic refractories by type 2
Containers 2 are received from the outside by a container transfer device 6 and delivered to an unsealing and weighing device 8. Opening weighing device 8
The container 2 is made up of a sealed pedestal 10 with a built-in load cell and an unsealing device 12, and the container 2 is opened while being sealed, and a fixed amount is cut out while being weighed with the load cell.

[0010] A sealed conveyor 14 is provided downstream of these conveyors, and the cut out monolithic refractory material can be transported to a kneading device 16 in a sealed state.

The kneading device 16 is provided with a water tank 20 for supplying water through a shutoff valve 18 and a gate 22 for discharging the water-containing material. Further, a transport conveyor 26 is provided for transporting the discharged water-containing material to a turning chute 24 for pouring.

The swing chute 24 is provided above the molten metal container 28 and the formwork 30, and is further provided with a height measuring device 34 for measuring the height of the top surface of the cast body 32 formed by pouring. Although a mechanical type is shown as the height measuring device 34 in FIG. 1, the height measuring device 34 is not limited to this, but may include an ultrasonic type,
A laser beam type or microwave type may also be used. Note that a vibration device 36 for applying vibration is attached to the inside of the formwork 30.

Further, the control device includes a microcomputer 38, an operator terminal 40, and a printer 42.
The measured values of the load cell and height measuring device 34 of the closed type pedestal 10 are input to the microcomputer 38, and the water supply cutoff valve 18 and gate 22 to the opening device 12, kneading device 16, and vibration device are provided. 36, etc., are all configured to be controlled by a microcomputer 38.

As described above, the embodiments of the device of the present invention are as follows.
It is roughly divided into departments. (A) Materials Department: Container warehouse for materials for monolithic refractories 4 Container transfer device 6 Unsealing and weighing device 8 which unseals and weighs the material inside the container and cuts out a fixed amount (B) Kneading Department Sealing to transport the cut materials to the kneading device 16 Kneading device 1 with conveyor 14 moisture supply device
6 (C) Pouring construction section A transport conveyor 26 that transports the kneaded water-containing material to the pouring device 32 A construction body 32 of water-containing material
Turning chute 24 for pouring into (D) Control unit Measurement device 34 of the top surface height of the formed workpiece 32, the cutout amount of the unsealing weighing device 8 based on the water supply amount in the kneading device 16 and the top surface height measurement value. Adjustment and control operation of each device.

[0015]

[Operation] The operation of the apparatus for constructing monolithic refractories of the present invention having the above-mentioned configuration will be explained. The monolithic refractory material is hermetically sealed in the container 2 and is stored by the transfer device 6 at a designated address in the container warehouse 4 according to instructions from the microcomputer 38, and no human intervention is required during this time.

When a command to cut out material is issued from the microcomputer 38, the container transfer device 6 takes out a predetermined container 2 and transfers it to the closed receiving table 10. Next, a sealed pedestal 10 with a built-in load cell and an unsealing device 1
2 and a sealed conveyor 14 are operated in conjunction with each other, and a predetermined material is accurately weighed by a load cell, transported by the sealed conveyor 14 without emitting dust, and charged into a kneading device 16. In the kneading device 16, an appropriate amount of water is added from the water tank 20 via the shutoff valve 18 to perform sufficient kneading.

The kneaded water-containing material opens the gate 22, passes through the transport conveyor 26, and is uniformly poured into the part to be lined consisting of the container 28 and the formwork 30 by the rotating chute 24, and is further poured. The collected water-containing material is made uniform by the vibrating device 36, and the packing density is improved. The height of the top surface of the poured construction body 32 during construction is measured by the height measuring device 34, and the measured value is input into the microcomputer 38.

In pouring the monolithic refractory into the molten metal container 28, for example, the refractory may be melted or damaged in the molten steel part on the side wall of the molten steel ladle that comes into direct contact with the molten steel and in the slag line part that is in contact with the slag for a long time. Generally, the speeds are different. Therefore, different types of refractories are installed in the molten steel section and the slag line section. The construction using different types of refractories for these two parts must be carried out strictly separately, and for this purpose it is important to measure the height of the top surface of the construction body. This height measurement value is determined by the computer 38 that controls the entire system.
is input, the remaining construction amount is instructed so as to satisfy the difference value from the preset height, and the next cutting command is issued.

Based on this cutting command, the closed type cradle 1
The load cell No. 0 and the unsealing device 12 operate in conjunction with each other to perform all operations on a predetermined construction object. In addition, in the case of changes in the amount of kneading or changes in the brand of refractories,
Similarly, the amount of water to be added is injected from the water tank 20 into the kneading device 16 via the shutoff valve 18 based on instructions from the microcomputer 38. The apparatus of the present invention allows an operator to operate the operator terminal 40 from cutting out materials to pouring the materials for the construction of monolithic refractories.
It is possible in humans. In addition, a container 2 for storing refractories,
Opening device 12, sealed pedestal 10, and sealed conveyor 14
Since the work is carried out in a sealed state, environmental pollution due to dust can be completely prevented.

[0020]

EXAMPLE As shown in Table 1, 20 tons of monolithic refractories were poured into a ladle using the apparatus of the present invention. For comparison, the same amount of monolithic refractories was poured into the same ladle using conventional equipment. These construction times and construction efficiencies are also shown in Table 1 for comparison. Construction efficiency is an index that indicates work efficiency by dividing the construction weight by the number of construction workers and construction time.

[0021]

[Table 1]

As is clear from Table 1, in the conventional example, the amount of work required by four people was two hours (construction efficiency = 2.5 tons/person x time), whereas in the embodiment of the present invention, the amount of work required by one person was 1.5 hours. The amount of work per hour (construction efficiency = 13.3 people/hour). Even in the conventional case, the pouring work itself can be performed by one person, but receiving and handling the material requires a lot of man-hours. In contrast, in the present invention, the receiving, handling, and construction status monitoring of materials are continuous and automated.
By using the minimum number of people and significantly reducing the loss time associated with manual work, construction efficiency was improved by approximately five times compared to conventional methods.

Furthermore, in the conventional example, since a flexible container was used, the generation of dust due to opening the container during material handling could not be avoided, but in the present invention, such dust is not generated and the working environment is greatly improved. Ta. Further, as a matter of course, there was no difference in the number of service life of the ladle between the example of the present invention and the conventional example.

[0024]

Effects of the Invention As is clear from the above embodiments, the present invention is applicable to a container warehouse for monolithic refractories, a container transfer device, an opening weighing device, a sealed conveyor, a kneading device, a rotating chute,
By installing a height measuring device for the construction object and a control device for these devices, and by making the material handling after receiving the material continuous, automated, and sealed, it is possible to perform pouring work by a single operator without generating dust. year,
The intended purpose was achieved with a small number of people and in a short time, the work efficiency was more than five times that of the conventional method, and the work environment was further improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the entire system of a monolithic refractory construction apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged partial sectional view showing the raw material section of FIG. 1;

FIG. 3 is an enlarged partial sectional view showing the kneading section of FIG. 1;

FIG. 4 is an enlarged partial cross-sectional view showing the pouring portion of FIG. 1;

FIG. 5 is an enlarged partial cross-sectional view showing the control section of FIG. 1;

[Explanation of symbols]

2...Container 4...Container warehouse 6...Container transfer device 8...Unsealing and weighing device 10...Sealed pedestal with built-in load cell 12...Opening device 14...Sealed conveyor 16... ……Kneading device 18 ……Shutoff valve 24 ……Swivel chute 26 ……Transport conveyor 28 ……Molten metal container 34 ……Height measuring device 38 ……Mancro computer

Claims (1)

[Claims] 1. An apparatus for pouring monolithic refractories into a molten metal container, comprising: a container warehouse for storing containers of monolithic refractories, a container transfer device for receiving and discharging containers to and from the container warehouse, and the dispensing apparatus. an unsealing and weighing device that unseals and cuts out and weighs the material for monolithic refractories in a container, a sealed conveyor that transports the cut material to a kneading device, and a kneader that mixes moisture into the transported material and kneads it. a moisture supply device that supplies moisture to the kneading device; a transportation device that transports the water-containing material to the pouring device; a pouring device that pours the transported water-containing material into a lined portion of the molten metal container; a height measuring device for measuring the top surface height of a construction product formed by being poured into a molten metal container, and a cutting amount determined by the unsealing weighing device based on the amount of water supplied in the kneading device and the measured value of the height measuring device. 1. An apparatus for constructing monolithic refractories, comprising: a control device for adjusting and controlling each of the devices.