JPS619509A - Method for filling mud gun with mud - Google Patents

Abstract

PURPOSE:To save the labor necessary for forcing mud into a tap hole by time- controlling various stages such as the stage of charging mud into a mud charge chamber from a slicer, and charging automatically mud into a mud gun. CONSTITUTION:Mud is charged into a mud charge chamber 3 from a slicer 6 at the first stage. A piston 4 for pushing the mud which is supplied in the chamber 3 into the cylinder 1 of a mud gun is moved forward from the initial position at the second stage. The piston 4 is moved backward to the initial position at the third stage. The time necessary for said first stage, the timing of the start of the second stage, the time required for the forward stroke, and the time needed for the third stage are set to a timer 12. Then the presence or absence of a confirmative signal for the filling of mud is detected by a mud detecting plate 8 provided at the nozzle 2 of the mud gun. When said signal is absent, the stages from the first to the third stage are repeated. When the signal is present, the operation is stopped after the completion of the third stage.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of filling mud into a mud gun for press-fitting mud into a tap hole of a blast furnace.

(Prior art) When completely filling a mud gun with mud, the mud is generally sliced into small chunks using a slicer, stored in a charging chamber on the base side of the mud gun cylinder, and then poured into the cylinder with a piston. By pushing it in and repeating this operation, the cylinder is filled with it.

In this case, the mud that is pushed into the cylinder one after another is pushed out from the opening at the cylinder tip when the first mud reaches the cylinder tip. An opening/closing lid is provided at the tip of the barrel.

When fully filling these conventional mud guns with mud, the timing of pushing the mud into the cylinder, determining the degree of filling in the cylinder, and determining when to end the process are all left to the operator's experience.

(Objective of the Invention) The present invention proposes a method of automating all of these manual judgment operations by time control.

(Another means to solve the problem) The gist of the present invention is to sequentially introduce sliced mud into a mud charging chamber in order to fill the mud gun cylinder with mud.
Next, in a mud filling method in which the operation of repeatedly pushing the mud filled into the mud charging chamber into the cylinder with a piston as one batch, the time required for the first step of charging the mud into the mud charging chamber from the slicer, and the mud charging time. The timing of the start of the second step in which the piston pushes the mud filled in the chamber into the mud gun cylinder moves forward from the initial position, the time required for the forward stroke, and the second step in which the piston moves back and returns to the initial position. The time required for the third step is determined in advance, a timer is set, and the presence or absence of a mud filling confirmation signal is detected by the mud detection plate provided at the tip of the mud gun cylinder.If there is no such signal, the time required for the third step is determined in advance, and the time required for the third step is determined in advance. The operation up to the third step is repeated, and if the signal is received, the operation is stopped after the third step is completed.

The details will be described below based on examples.

FIG. 1 is a diagram illustrating the present invention in detail. 1 is a mud gun cylinder, 2 is a mud gun cylinder tip, 3 is a mud charging chamber, 4 is a piston, 5 is a mud charging port, 6 is a slicer, and 7 is a chute. The mud m sliced into small chunks by the slicer 6 is guided to a chute 7 and charged into the mud charging chamber 3 through the mud charging port 5. This mud m is continued to be introduced until the mud introduction chamber 3 becomes empty.

The piston 4 is initially at the P,1 position, moves forward to the P22 position, and reciprocates this distance. Inside mud gun tube 1
@The mud mu that is pushed in next is pushed forward and the mud reaches the tip of the tube.

In front of this barrel tip 2, there is a mud detection plate 8 that opens when mud m is about to come out from the mud gun barrel tip.A striker 9 is attached to this mud detection plate 8, and a front FC of this striker 9 is installed. Since there is a limit switch 10, the mud filling state force r in the mud gun cylinder 1 is known by the mud detection plate 8. A control device 11 and a timer 12 are used to fully automatically control these operations.

(Action of the invention) The action of the present invention will be described below. FIG. 2 is a time chart of this filling method, in which A1 shows the state in which the slicer 6 is in operation, and A2 shows the state in which it is stopped. B indicates the forward end of the mud gun piston 4, P2 indicates the position of the piston 4 determined by the timer T3, and Pl indicates the initial position of the piston 4. Note that t3 indicates the mud filling completion detection timing, t3 indicates the completion of automatic operation, and tl indicates the switch-on timing for starting automatic operation by the control device ↑2.

FIG. 3 shows an operational flow diagram of the present filling method.

θ1 is the switch on to start automatic operation by the control device 12, θ3 is the operation of the mud detection plate 9, and when the striker T1 is activated and completion of mat filling is confirmed with the limit switch 10, θ2 is not confirmed. case,
Further, θ4 indicates that when the timer T3 is compatible with θ2 or θ3, the process proceeds to the flow below. θ,
a2 indicates the start of cutting the mud m by the slicer 6, and a2 indicates the stop of cutting.

Next, bl represents the start of forward movement of the mud gun piston 4, and b2 represents the start of backward movement. Further, b3 is confirmation of the initial position of the mud gun piston 4.

Now, when starting the operation, first, when the ON command is issued manually, the operating time of the slicer 6, which has been standardized empirically, is
1, the slicer 6 continuously cuts out small pieces of mud m'r and continues to feed them into the mud feeding chamber 3. When the time T1 ends, the piston 4 moves forward for a time T3 after an idle time T2.

Here, the stroke of P1 to P2 of the piston 4 is T3
is dominated by time.

When the piston advance time T3 ends, the timer ends for one cycle, and the piston 4 returns to its initial position. Return to this initial position is confirmed by a limit switch in the piston drive device 13, and the next operation of the slicer 6 is started at the same time as one cycle of all processes is completed.

Meanwhile, during these cycles, the mud detection plate 8t fills the mud gun cylinder 1 with mud, and eventually starts to open when it starts to overflow from the cylinder tip 2. The limit switch 1o is actuated by the striker 9, and the control device 11 is activated. When the end of the forward movement of the piston 4 is confirmed, the piston 4 returns to the initial position P2, and the filling operation is completed.

(Embodiment) In the embodiment of the present invention, the operating time T1 of the slicer 6 is about 10 minutes, and the amount of about 60 kp is pushed into one batch by a piston. Then T2 is about 5 seconds, the piston advance time T3 is about 15 seconds, and the l cycle is about 1
It is 0 minutes and 35 seconds. These operations filled the mud gun cylinder 1 with about 10 pushes and ended when the mud detection plate 8 was activated.

(Effects of the Invention) If the mud filling method of the present invention is used, the inside of the mud gun cylinder 2 is automatically filled with mud m only by turning on the switch θ3 to start automatic operation. This method reduces the amount of work that must be done by humans to pack the mud, and it also saves labor, which has a great industrial effect.

[Brief explanation of the drawing]

FIG. 1 is a detailed explanatory diagram of the present invention, FIG. 2 is a time chart of the filling blade and method of the present invention, and FIG. 3 is an operation flow diagram of the filling method of the present invention. 1: Mud gun tube 2: Mud gun tip 3: Mud inlet chamber 4: Piston 5: Mud inlet
6: Slicer 7: Chute 8: Mud detection plate 9 Nistriker 10 = Limit switch 11: Control device 12: Timer 13: Piston drive device Pl: Piston initial position P2: Piston position determined by timer T3 A1 Varnish liner in operation A2: Slicer stopped/middle B: Piston forward end t,: Automatic operation start switch on t2: Detection of mud filling completion t3: Automatic operation completed T,: Mud charging time from the slicer to the mud charging chamber T2: After mud charging is completed Time until the piston starts moving forward T3: Time until the histone starts moving forward and reaches point 22 θ1: Switch on to start automatic operation θ2: When not confirming mud filling completion θ3: Confirming mud filling completion If θ4: Timer T3 and θ2 or θ3 are compatible al: Start mud cutting a2: Stop mud cutting b1
:Piston starts moving forward b2: Piston starts moving backward b3:
Confirming the initial position of the piston Fig. 1 Fig. 2 f.

Claims (1)

[Claims] In order to fill the mud gun cylinder with mud, sliced mud is sequentially introduced into the mud injection chamber, and then the mud filled in the mud injection chamber is repeatedly pushed into the cylinder with a piston. In the filling method, the time required for the first process of introducing mud from the slicer into the mud input chamber, and the start of the second process in which the piston that pushes the mud filled in the mud input chamber into the mud gun cylinder advances from its initial position. A timer is set by predetermining the timing and time required for the forward stroke and the time required for the third step in which the piston retreats and returns to the initial position, and a mud filling confirmation signal is sent from the mud detection plate installed at the tip of the mud gun barrel. Detects the presence or absence of the signal, and if there is no signal, repeats the operation from the first step to the third step, and if the signal is present, stops the operation after completing the third step. A method of filling a mud gun with mud.