JPH0216449A - Combination of molten metal temperature measuring and sampling device and automatic attachable/detachable lance - Google Patents

Abstract

PURPOSE:To attach and detach a holder for temperature and oxygen measurement and a ladle type sample to one lance by providing a rod body gripping and ungripping mechanism in an external tube provided with a guide for guiding a rod body. CONSTITUTION:The rod body gripping and ungripping mechanism is put in the external tube 20a to constitute the lance 20. This mechanism consists of an air cylinder 21 fitted to the upper part of the external tube 20a, a rod 22 which is put in upward/ downward motion by the air cylinder 21, a catcher 24 which grips and releases the handle of the sampler, etc., and a link 23 which couples the rod 22 with the catcher 24 and puts in the catcher 24 in gripping/ungripping motion in response to the elevation of the rod 22. A guide surface 25a which spreads downward and the guide 25 which has a guide hole 25b bored in the guide surface 25a successively are provided at the lower end of the external tube 20a. The guide surface 25a performs aligning operation when the handle of the sampler, etc., is inserted and is fitted in the guide hole 25b while small clearance is left with the handle of the sampler, etc., to limit its lateral movement.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic temperature measuring and sampling device for automatically measuring the temperature of molten metal and automatically collecting a sample, and particularly relates to a lance in the device.

In most existing measuring devices, the temperature and oxygen measuring device and the sample collection device using a ladle-type sampler are each independent. A total of two types of equipment are required: a type sampler sampling device, and installation in a small space is extremely difficult. For sample collection devices,
A ladle-type sampler usually has a long rod-shaped handle, the upper end of which is releasably gripped by a lance, and the lower end of the ladle-type sampler enters into the molten metal by a lance lifting device to collect a sample, and also controls temperature and temperature. In the case of an oxygen measuring device as well, the measurement holder is exchangeably held by a lance and immersed in molten metal to perform measurements. Therefore, the above problems can be solved by developing a lance that can hold the temperature and oxygen measuring holder and the ladle-type sampler interchangeably.

The present invention has been made based on the above-mentioned findings, and the present invention includes:
1 holder for temperature and oxygen measurement and a ladle type sampler
It can be attached and detached using a real lance, and only one set includes the lance lifting drive unit and the lance lifting guide frame, etc.
To provide a lance that can also be used as a slag splitting device by automatically attaching and detaching a slag splitting fitting for splitting slag on the surface of molten metal.

According to the present invention, the present invention includes an outer tube provided with a guide for receiving and guiding the rod-shaped body at the lower part thereof, and a rod-shaped body gripping and releasing mechanism provided in the outer tube and including a cylinder, a rod, a link, and a carrier. A measuring holder and a ladle-type sampler automatic attachment/detachment lance are provided.

The guide is provided with a guide surface that expands downward and a guide hole connected to the guide surface, and the rod-shaped portion at the upper end of the ladle-type sampler or measurement holder is first aligned with the guide surface, and then It is guided to the grip and release mechanism by the guide hole.

In a preferred embodiment of the present invention, a bonx to which a gas hose with a measurement lead wire passed inside can be connected, and a hose for driving the cylinder are attached to the upper part of the lance, and a holder for temperature and oxygen measurement is installed. A gas seal ring is attached to the contact surface with the lance to prevent gas leakage, and a gas release hole is provided at the lower end of the holder.

The gas may be air, N2 or Ar gas.

The holder attached to the lower end of the lance has a tapered contact part with the lance, a gas seal link is attached to the tapered part to prevent gas leakage, and a grippable rod-shaped holder with a connection part with multiple contacts at the upper end. A handle is attached to the handle, a gas inlet hole is provided in the handle, a part of cooling air or N2 or Ar gas is flowed into the holder, and the holder is cooled by releasing it to the outside from a part of the connector at the tip of the holder. Since tar is prevented from adhering to a portion of the connector, deterioration in insulation caused by tar adhesion can be prevented.

A preferred embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a ladle-type sampler consisting of a long handle 1a and a pot-shaped container portion 1b fixed to the lower end of the handle 1a. As shown in the figure, a large number of samplers 1 are placed on top and bottom 2.
Each handle 1a is supported by being held by a hold spring 3 attached to the circumference of the plays Ha and 2b. The sampler 1 is manually attached by pushing it laterally into the hold spring 3. Another plate 4 is arranged below the plate 2a, and the lower end of each container 1b abuts the plate 4. The plate 4 is provided with a backing plate 5 that keeps the direction of the container part 1b relative to the handle 1a of each sampler 1 constant, and a support part 6 that prevents the direction of the sampler from changing during cutting. The plates 2a, 2b, 4 are fixed to a shaft 7 via a bearing unit, and an electric motor 8 is connected to the shaft 7 via a reducer 9.
to drive. Strikers 10 are attached to the plate 4 at equal angles in accordance with the number of samplers 1 that can be supported, and when the strikers 10 actuate a limit switch (not shown), the shaft 7 is rotated in an indexing manner. These parts are mounted on a stock truck 12 with wheels 11.
The stock truck 12 is supported by an air cylinder 13
It moves forward and backward on the rail 14. The air cylinder 13 and rail 14 are attached to the heath 15.

The indexically positioned sampler (shown as 1' in FIG. 1) is transferred to the loading device 16 as the stock truck 12 advances. The mounting device 16 includes two vertically spaced clamp arms 17a, 17b.
Then, open and close the clamp arms of each set and sampler 1.
an air cylinder 18 that grips the handle 1'a of the
Each clamp arm has a groove to facilitate gripping the handle 1'a. When the delivery is completed, the cart 12 moves backward to prepare for the next delivery.

The sampler delivered to the mounting device 16 is then transferred to the lance 2.
Passed to 0. In FIG. 2, the lance 20 includes a long hollow body, that is, an outer tube 20a, and a rod-shaped body gripping and releasing mechanism housed inside the outer tube 20a. (a hydraulic cylinder, electric actuator, etc. may be used), a rod 22 that moves up and down by an air cylinder 21, a catcher 24 that releasably grips the handle of the sampler, and a rod 22 and catcher 24 that are connected to each other. and a link 23 for causing the catcher to perform a grasping and releasing movement in response to the rising and falling movement of 22. A guide 25 having a guide surface 25a that expands downward and a guide hole 25b connected to the guide surface 25a is provided at the lower end of the outer tube 20a. The guide surface 25a performs a centering action when the sampler handle is inserted, and the guide hole 25b fits with the sampler handle with a small play to limit its lateral movement.

A pipe 26 for supplying pressurized gas, for example, pressurized air to the air cylinder 21, and a mounting portion 27 for mounting the lance 20 to a lance lifting device to be described later are provided at the upper part of the outer tube 20a.

FIG. 3 shows another embodiment. The rod 22' is connected via a link pin 23' to a catcher 28 which pivots about a hinge pin 29 in the form of a perforated plate or arm. The sampler handle 1'a has a guide surface 25a.
Partially conical stopper 30 having a tapered surface corresponding to
is fixed to regulate the insertion position of the sampler. When the rod 22' is pulled upward, the catcher 28 is tilted and its hole engages with the handle 1'a as shown in the figure, thereby gripping the sampler.

FIG. 4 shows an example of a sampling lance lifting device, in which the sampling lance 20 is attached to a guide frame 31 via a mounting portion 27 so as to be able to rise and fall, and the lance lifting motor 32
The container portion 1b of the sampler 1 held by the lower end of the lance 20 is immersed in the molten metal. The piping 26 of the lance 20 is connected to a pressure source via a switching valve (not shown) via a hose 33 that allows the lance to move up and down, and the other end is connected to an air cylinder (not shown), which allows the sampler to be held and Perform liberation.

The lance lifting device is operated under the control of a control device (not shown), and after immersing the container portion tb of the sampler 1 attached to the lower end of the sampling lance into the molten metal to a predetermined depth, the sampling lance is raised to collect a sample. . Since the sampler I and the sampling lance are correctly positioned, the immersion depth can be precisely regulated simply by controlling the operation of the lifting device.

FIG. 5 shows a detailed view of the ladle type sampler shown in FIG. A rod-shaped body 36 having a stopper 30 tapering in the opposite direction is fixed. The rod-shaped body 36 has an annular groove 36a constituting a grip portion to be gripped by the catcher 24 of the lance, thereby ensuring secure grip by the catcher of the lance. As shown in FIG. 3, the stopper 30 has a diameter that protrudes outward beyond the lower opening of the guide surface 25a when it is attached to the lance, so that splashes of molten metal etc. do not adhere to the guide surface 25a. prevent.

FIG. 6 shows a slag splitting fitting 40 that can be attached to the lance of the present invention. The slag splitting fitting 40 can be immersed in molten metal to break the slag on the surface of the molten metal, and has sufficient rigidity and strength to break the slag. a rod-shaped body 36' having a pipe-like portion at its lower end to which the striking metal fitting 41 is replaceably mounted, a rod-shaped body 36' having a gripping portion 36'a similar to the rod-shaped body 36 of FIG. 5 at its upper end; and a stopper 30. A support part 42 with a similar stop 30'.

FIG. 7 shows a modification of the lance shown in FIG. 2. The lance 50 includes an outer tube 50a that protects the internal mechanism from heat, dust, molten metal splash, etc., and has a cylinder 21 inside and is moved up and down by the cylinder. A rod-shaped rod including a rod 52, a link 53 connected to the rod 52, and a catcher 24 connected to the link 53 to releasably grip a rod-shaped portion at the upper end of a ladle-type sampler, a slag splitting tool, a measuring holder (described later), etc. A body gripping and releasing mechanism is housed therein. A gas hose 26 for supplying pressurized gas, such as pressurized air, to the cylinder 21 and a mounting bracket 27 for attaching the lance to the lance lifting device are also attached to the upper end of the outer tube 50a, similar to the lance shown in FIG. At the lower end of the lance, there is a guide surface 25a that expands downward and a guide surface 25a, similar to the lance shown in FIG.
A guide 25 having a guide hole 25b connected to the guide hole 5a.
is provided.

The outer tube 50a is airtight, and a relay box 54 is connected to a gas hose 55 that supplies cooling gas inside.
is provided at the top of the outer tube 50a. Relay box 5
A connector 57 for a measurement lead wire 56 is also arranged within 4 . The relay box 54 communicates with the inside of the outer tube 50a via an opening 54a. The opening 54a constitutes the gas population. In the illustrated embodiment, the gas hose 55 has a measurement lead wire 56 inside, but the measurement lead wire and the gas hose may be connected to the relay box independently.

A member 52a having an opening as a passage for a cooling gas and a passage for a measurement lead wire is fixed to the lower end of the rod 52, and a link 53 is connected to this member 52a. Note that a connector 58 for connecting the measurement lead wire of the measurement holder and the measurement lead wire 56 is provided inside the lance.
In order to facilitate inspection and assembly of this part, the outer tube can be separated at this part. That is, the outer tube 50a includes the relay box 54 and the upper portion 60 having the mounting fittings 27.
, a lower part 61 having a guide 25, and an upper part 60.
and a connecting portion 62 removably connected to the lower portion 61.
The connecting portion 62 is also provided with a link guide portion 62a and a connector holding portion 62b.

FIG. 8 shows a holder for temperature and oxygen measurements, and FIG. 9 shows the holder attached to the lance of FIG. 7.

The holder 160 includes a connector 161 that is inserted into a disposable temperature and oxygen measurement probe 70 (FIG. 9);
The first pipe 1 is connected to the connector 161 and extends upward.
62, a second vibro 3 having a larger diameter than the first pipe 162, and a stopper 30 shown in FIG. 3 fixed to the upper end of the second pipe.
Similarly, a connecting portion 64 that engages with the guide surface of the lance and also acts as a stopper, a gas seal ring 65 provided in the annular groove of the connecting portion 64, and a rod-shaped body that is inserted into the guide hole of the lance. an annular groove 66a formed in the ball 66 and forming a grip portion to be held by the catcher of the lance; a hole 67 formed in the ball 66 for guiding cooling gas into the inside of the holder 160;
It is composed of a connection part 68 at the upper end connected to the connector 161 and a presser foot 69 for fixing the connection part 68, and the lower end of the connector 161 is provided with an outlet hole for cooling gas.

FIG. 9 shows a state in use, in which a disposable sleeve-shaped measuring probe 70 (indicated by a chain line) is attached to the lower part of the holder 160 and immersed in molten metal. The upper end of the probe 70 is above the liquid level 71 of the molten metal, and the cooling gas coming out from the lower end of the connector 161 passes through the gap between the probe 70 and the first pipe 162 of the holder 160 and is above the liquid level 71. released to the outside.

In addition, if a ladle-type sampler (Fig. 5) or a slag splitting fitting (Fig. 6) is attached to the lance, the cooling gas will flow through guide 2.
The liquid is discharged to the outside through the gap between the guide surface 25a of No. 5 and the stopper portion 30, 30'.

As described above, according to the present invention, the lance is a ladle type sampler,
In combination with temperature and oxygen measurement holders, various tasks can be accomplished with great ease.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing a part of an automatic temperature measurement sample collection device, FIG. 2 is a longitudinal sectional view showing a first embodiment of the lance according to the present invention, and FIG. 3 is a modification of FIG. 2. 4 is a schematic side view showing the lance in use in FIG. 2, FIG. 5 is a schematic diagram of a ladle-type sampler used in combination with the lance of the present invention, and FIG. 6 is a slag FIG. 7 is a longitudinal sectional view showing another embodiment of the lance according to the present invention, FIG. 8 is a partially sectional side view showing an example of a holder for temperature and oxygen measurement, and FIG. 9 is a schematic diagram showing a splitting fitting. FIG. 3 is a partially sectional side view showing the usage state of the temperature and oxygen measurement holder. 1.1', 35: Ladle type sampler, 20.25: Lance, 20a, 50a: Outer tube, 21 Nijilinda,
22: Rod, 24: Catcher, 25 Ni guide, 25a Ni guide surface, 25b Ni guide hole, 30.30': Stopper part, 36.36'
, 66: Rod-shaped body, 36a, 36'a, 66a: Grip portion, 40 Nisslag splitting fitting, 41: Impact fitting, 54:
Box, 55: Gas hose, 64: Connection section, 65: Gas seal ring, Figure 68: Connection section. (2 others) Figure A

Claims (1)

[Claims] 1. An outer tube, a rod-shaped body gripping and releasing mechanism provided in the outer tube and including a cylinder, a rod, a link, and a catcher, and a guide provided at the lower part of the outer tube to receive and guide the rod-shaped body, and the guide is arranged downward. It has a guide surface that expands toward the center and a cylindrical guide hole that is connected to the guide surface. Temperature measurement of molten metal, oxygen measurement, with automatic attachment/detachment lance and rod-shaped body part to limit directional movement.
Molten metal temperature measurement for sample collection or slag splitting, etc.
The sampling device includes a stopper portion formed in a tapered shape corresponding to the guide surface, and a gripper that is inserted through the guide hole and gripped by the catcher. A combination with the molten metal temperature measurement and sampling device, comprising: