JP2006078459A - Falling ash collecting tube having falling ash removing function for falling ash annunciator of volcanic ash - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a falling ash collecting tube with a function of removing a falling ash in a falling ash annunciator of a volcanic ash, solving the defects causing ash detection of a sensor impossible, according to the adhesion of falling ash fine particles and a deposition of a falling ash cluster in the falling ash collecting tube of a conventional falling ash annunciator of the volcanic ash. <P>SOLUTION: The device comprises a fallen ash removing mechanism (12) which expands and contracts the fallen ash collecting tube (10) is set on a side of the falling ash collecting tube (10), capable of an expansion and contraction which is equipped with a fallen ash collection bag (7) mounted to the fallen ash collecting tube frame (5). According to this mechanism, the fallen ash collecting tube (10) which is pushed and contracted by a push-down arm (16) of the fallen ash removing mechanism (12) rebounds with a sufficient vigor. Thus, the fallen ash removing function performs to strike down the undetectable fallen ash of the volcanic ash which is adhered and deposited from the fallen ash collecting tube (10) to an upper part of a sensor part (11). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Detailed Description of the Invention

Industrial application fields

  According to the present invention, in the ash collection tube of the conventional ash fall alarm device, when the volcanic ash with very fine particles falls, the fine volcanic ash adheres to the ash collection tube, and the ash fall does not accumulate on the sensor part. On the other hand, in the case of a terrible amount of doka ash, the telescoping ash collection cylinder (10 ), The ash collection cylinder (10) rebounds vigorously at any set time, and the adhering and clogging volcanic ash causing the inability to detect ash fall is struck to the top of the sensor unit (11). The present invention relates to a ash collection cylinder (10) with a ash removal function of a volcanic ash fall detector intended to be able to be dropped.

The conventional ash fall indicator cannot detect ash when volcanic ash that has particles attached to the fine ash collection cylinder falls, so the ash fall cannot reach the upper part of the sensor. It clogged in a few seconds and the ash fall could not reach the upper part of the sensor, making it impossible to detect the ash fall.
And in the volcanic activity period when ash falls that would make it impossible to detect ash fall, it was necessary to remove clogged and attached ash by human hands each time.
However, the necessity of this artificial ash removal operation means that the ash fall alarm device does not function at the beginning of ash fall, and it can be said that the function as an ash fall alarm is not useful at all.
In this case, it could be said that the function as a ash fall alarm was poor.

Problems to be solved by the invention

In order to solve the drawbacks of the prior art, firstly, a method for removing ash falling on the ash collecting cylinder that causes the sensor to be undetectable and which becomes clogged is considered.
I tried to think of methods to remove ash fall, such as blowing away (air blow), wiping (wipe), wiping away (brush), and tapping (dust). If the collected volcanic ash is blown outside the ash collection cylinder, or if it is washed with water, the possibility of an adverse effect of promoting further adhesion and clogging increases, and the volcanic ash to be deposited on the upper part of the sensor cannot be collected completely It could be said that a defect occurs. Also, if a brush or wiper squeegee is inserted into the ash collection cylinder and moved to wipe it off, the mechanism becomes cumbersome and the surface to be wiped tends to become uneven. There seemed to be defects such as powder generated from wear on the contact surface, noise during movement, and malfunctions caused by the fall of volcanic ash that had adhered and deposited on wipers and brushes.
Therefore, by improving the ash collection cylinder equipped with a functional mechanism that removes the ash by tapping the ash collection cylinder body by expanding and contracting the ash fall on the ash collection cylinder part of the conventional ash fall detector. It was an object of the invention to overcome the drawbacks.

Means for solving the problem

The present invention is for replacing the ash collection tube portion of a conventional ash fall alarm device with the ash collection tube mechanism of the present invention as it is.
Explaining its configuration:
(A) Insert the metal pipe strut (2) portion of the ash collection cylinder outer frame upper frame (1) into the spring-supported column (4) portion of the ash collection cylinder outer frame lower frame (3) (5). (Figure 2)
(B) The ash collection cylinder outer frame upper frame of the ash collection cylinder outer frame (5) (1) The ash collection cylinder bag upper attachment part (8) and the ash collection cylinder of the ash collection cylinder outer frame lower frame (3) The ash collection tube bag (7) is folded back to fit the position where the ash collection tube bag (7) is tight, and the ash collection tube bag upper installation portion (8) is fixed with the installation seal (6). The collecting cylinder bag lower mounting portion (9) is folded and fixed by being sandwiched and fixed by the ash collection tube bag mounting cap (15), and the ash collection cylinder (10) can be rebounded when contracted. (Fig. 3) (Fig. 4)
(C) In order to provide an operation function that allows the ash fall on the ash fall collecting cylinder (10) to adhere to and deposit on the sensor unit (11), Two to three ash fall removal operation drive mechanisms (12) are assembled, and the upper part of the ash collection cylinder is moved to the carrier (18) of the movable table mechanism that automatically moves in response to a control signal from the operation control circuit board (13). The upper frame (1) is hooked on the frame (1) and the upper frame (1) is pushed down, and when it rises, the joint (25) with the mechanism of the spring (26) and the stopper (27) is bent downward and the upper frame of the ash collection cylinder A push-down arm (16) having a mechanism of passing through (1) and returning to the upper side of the upper framework (1) of the ash fall collecting cylinder and returning the joint (25) to the stopper (26) immediately by the spring (25). In, ash collecting vessel (10) to be able to ash removal operation rebounding contracts periodically repeated.
The bounce lock nut (28) prevents the ash collection cylinder upper frame (1) from overcooking, and the push arm (16) is caught by the ash collection cylinder upper frame (1) during the ascending operation, and the ash collection cylinder upper frame. Be sure to attach (1) to prevent it from being lifted. (FIG. 1) (FIG. 5)
(D) The sensor unit (11), the ash fall collecting cylinder (10), the ash fall removal operation drive mechanism (12), the operation control circuit board (13), and the drive power supply circuit unit (14) which are constituent elements of the present invention are fixed. Using the metal fitting (30) or its own mounting hole, etc., it is securely screwed to the base (29) so as not to rattle during operation.
(E) The ash fall removal operation drive mechanism (12) and the operation control circuit board (13) are connected, the operation control circuit board (13) and the drive power supply circuit section (14) for power supply are connected, and this is used as a commercial power source. Connecting.
Install as described above.

Action

The structure of the conventional ash fall alarm device is described as follows. Volcanic eruption causes ash fall and pours into the ash collection tube (10) of the ash fall alarm device. The basic operation is that the circuit operates and outputs the detection signal of ash fall detection when the deposit reaches the detection amount of the sensor, but the size of the fallen volcanic ash fall particles is 100 microns. In the case of the following volcanic ash, even if the ash fall collecting cylinder (10) is made of metal or plastic, it has been found that it cannot adhere to the sensor part and fall down to the sensor part and cannot accurately detect ash fall. It was.
Therefore, in order to solve the drawbacks, the material of the ash collection cylinder (10) is made of a thin synthetic resin bag and is shrunk. When it is bounced back and returned to its original position, the fine ash of particles adhering to the side surface of the ash collection cylinder (10) is shaken off as if it has been jumped and tightened. I fell down skillfully.
This operation is controlled by the circuit of the operation control circuit board (13) and repeated periodically every 1 minute or every 5 minutes to detect the ash fall, so that it can cope with the ash fall of the volcanic ash with very fine particles. Therefore, I think that it can be a more practical ash collection tube of ash fall alarm than the conventional ash fall collection tube.

The ash collection cylinder bag (7) is a supermarket shopping bag that can be exchanged, and the edge (31) is hot with two films of slightly thicker material such as polyethylene used in packaging film for cigarettes and tobacco. This is a sealed funnel-shaped and cylindrical bottomed bag (Fig. 3). However, if there are as few hot-sealed seams as possible and the welding outline is not bumpy, there will be no clogging of volcanic ash in that part. It is obvious that it is good.
Also, if the ash collection cylinder bag (7) is fixed to the ash collection cylinder bag upper mounting part (8) with the installation seal (6), and the installation seal (6) is unfixed under outdoor conditions, etc. I think that it is sufficient to weld and fix several positions of the mounting seal (6) with a handy hot sealer.
However, regarding the adhesion of fine volcanic ash with a particle size of about 50 μm or less to the surface of the ash collection tube (10), there is room for improvement in material research on the ash collection tube (7). Because it is an outdoor installation device, it is most appropriate to use a regularly replaceable ash collection cylinder bag (7) made of polyethylene, polypropylene, or PET resin film that is less susceptible to deterioration from sunlight and wind and rain. Seem.
During the trial production, even if the ash collection cylinder (10) was expanded and contracted several times, there was still a minute amount of volcanic ash that could not be knocked down. (10) was washed away with water and it seemed to flow away, but when the residual ash was washed off and taken into a container, it was found that the sensor unit (11) was less than the amount of accumulated deposit. It was found that the components were roughly divided into components that precipitate, components that dissolve in water, and components that float in water. However, when it was washed with water, it felt that it would become a component that could not be removed firmly when dried, so the residue was considered as one residue deposit that was always attached. If anything, the powder on the powder can be beaten well, so it can be said that the effect of reducing adhesion by the amount of residual adhesion that adheres anyway should be expected. .
The volcanic activity is taken into account for each period, the size of the ash fall particles at the installation location of the equipment is judged, and the user selects the best time period for intermittent operation of the ash fall removal drive mechanism (12). I think that it is possible to demonstrate the function of more accurate and quick ash fall notification by variably setting to, but when observing the particles of ash fall, there was no volcanic ash particles after raining, there was no long-term eruption activity, and it erupted suddenly The volcanic ash particles, the volcanic ash particles that erupted for a long period of time, and the ash particles that have fallen for a long period of time, but are still falling, can be seen to differ in size, color, shape, and material. Can be said to be a guide for setting.
Moreover, by changing the strength of the spring spring (35) of the spring support (4) of the ash collection cylinder outer frame lower frame (3), the momentum of jumping and bouncing changes, and the efficiency of dropping attached volcanic ash changes. I can say that.
As for the ash fall removal operation drive mechanism (12), the push arm (16) is driven by the carrier (18), the lead screw (19), the coupling (20), the motor (21), the E ring (32), and the ash fall removal operation drive. Screwed to the carrier (18) portion of a general movable stage mechanism unit consisting of a mechanism casing (33) and used by running a guide groove (17) closed by a guide plate (34), When the push-down arm (16) applied to several places of the ash collection cylinder upper skeleton (1) is simultaneously lowered and the ash collection cylinder upper skeleton (1) is lowered to the lowest limit, along the guide groove (17) The traveling push-down arm (16) rotates, disengages from the ash collection cylinder upper frame (1), and the ash collection cylinder upper frame (1) jumps up. After that, the push-down arm (16) is lifted when the motor (21) rotates in the reverse direction and comes into contact with the lower ash collection cylinder upper frame (1) where the tip of the push-down arm (16) jumps up during the rise. The arm (16) bends downward at the joint (25) and passes above the upper framework (1) of the ash fall collecting cylinder, and after passing, the joint (25) is stopped by the stopper (27) with the spring (26). The pressing arm (16) that has returned and continued to rise is a mechanism that rises to the position of the upper limit sensor (22), stops, and waits for the next pressing operation. (Fig. 5)
Inside the ash fall removal operation drive mechanism (12), there are several upper limit sensor (22) and lower limit sensor (23) that determine the movable range of the push arm (16), and several around the ash collection tube (10). The descent operation pause sensor (24) is arranged to take timing so that all the push-down arms (16) of the ash fall removal operation drive mechanism (12) are simultaneously disengaged from the ash collection cylinder upper frame (1). It discriminate | determines with a board | substrate (13) and controls a motor (21).

The invention's effect

Action

But as I said, the amount of ash that could not be detected due to adhesion would fall down, so that any small-scale volcanic eruption fumes would fly to the farthest minute, minute and long. It is possible to detect even fine particles of ash that are difficult to realize with human eyes over time.
However, the maximum detectable time is that if the falling ash falls on the ash collection cylinder (10), the ash fall removal drive mechanism (12) that is arbitrarily set by the user It is guaranteed only for every time period.
However, the longest detection time is as long as the amount of ash falls, and the amount of ash falls as long as possible. For example, it can be said that the minimum detection time is detected in any short time.
Also, even if it is not a fine volcanic ash particle, in the case of a large explosion where a large amount of ash falls in a short time, the ash that has fallen at once will accumulate on the tip of the bottom of the ash collection cylinder (10). The ash fall collecting cylinder that can fall down to the part (11) and cannot be detected, and the ash fall detection of the fall ash that continues to fall after that is not possible. (10) Since the clogging operation can be eliminated by the slashing operation by the ash fall removal operation drive mechanism (12), it can be said that the effect of solving the problem in the case of doka ash is obtained.

Configuration diagram of the present invention Ash collection cylinder outer frame configuration diagram Outline drawing of ash collection tube Installation diagram of ash collection bag Ash fall removal drive mechanism diagram

Explanation of symbols

1 is a ash collection tube outer frame upper frame 2 is a metal pipe support 3 is a ash collection tube outer frame lower frame 4 is a spring-supported column 5 is a ash collection tube outer frame 6 is a mounting seal 7 is a ash collection tube 8 is a ash collection tube The bag upper attachment portion 9 is the ash fall collecting cylinder bag lower portion attachment portion 10 is the ash fall collection cylinder 11 is the sensor portion 12 is the ash fall removal operation drive mechanism 13 is the operation control circuit board 14 is the drive power supply circuit portion 15 is the ash fall collection cylinder bag attachment cap 16 Is a pressing arm 17 is a guide groove 18 is a carrier 19 is a lead screw 20 is a coupling 21 is a motor 22 is an upper limit sensor 23 is a lower limit sensor 24 is a lowering operation pause sensor 25 is a joint 26 is a spring 27 is a stopper
Reference numeral 28 denotes a spring-up nut 29, a base 30, a fixing bracket 31, an edge 32, an E-ring 33, a ash fall removal operation drive mechanism, a housing 34, a guide plate 35, a spring 36, and a mounting screw groove

Claims (1)

  Spring strut (4) part with mounting screw groove (36) of bounce lock nut (28) and bounce spring (35) at the tip of lower frame (3) of ash collection cylinder outer frame made by processing metal rod In addition, the ash collection cylinder outer frame (5), which is assembled by inserting the metal pipe strut (2) part of the upper frame (1) of the ash collection cylinder outer frame (1) made by processing a metal rod, and the mounting seal (6) are attached. A replaceable ash collection cylinder bag (7) made of durable, low adhesion material that can be bent and folded with little deterioration due to ash adhesion, outdoor sunlight and rain, etc. The ash collection cylinder bag (7) is tightly attached to the ash collection tube upper mounting part (8) of 1) and the ash collection cylinder bag lower installation part (9) of the ash collection cylinder outer frame lower frame (3). Folded according to the position and attached to the upper part of the ash collection tube (8) is fixed by the mounting seal (6) and mounted, and the lower mounting portion (9) of the ash collection tube bag is folded and fixed by being sandwiched and fixed by the ash collection tube mounting cap (15). The lower ash collection cylinder (10) and the carrier (18) of the movable table mechanism are hooked on the ash collection cylinder upper skeleton (1) when lowered, and the upper ash collection cylinder upper skeleton (1) is pushed down, and the spring ( 26) and the stopper (27), the joint (25) is folded downward and a push-down arm (16) that can pass through the ash collection cylinder upper frame (1) is attached, and the push-down arm (16) is lowered. As the push-down arm (16) is hooked on the three points of the ash collection cylinder upper skeleton (1), the ash collection cylinder upper skeleton (1) is pushed down to a certain position and contracted, and it is lowered to the lower limit. The push-down arm (16) whose direction is changed by the guide groove (17) closed by the guide plate (34) through which the push-down arm (16) passes is detached from the upper ash collection cylinder upper frame (1) and pushed down. The ash collection cylinder upper skeleton (1) stretches violently like a jump umbrella and returns to the position of the spring-up stop nut (28), so that the push-down arm (16) moves upward when the ash collection cylinder upper skeleton (1) The ash collection cylinder upper frame (1) is no longer lifted and the volcanic ash of fine particles (particles of about 100 μm or less) that could not be successfully put into the sensor part (11) due to adhesion or clogging It has a ash removal function that knocks down the ash that causes ash fall detection impossible due to adhesion of ash fall to the ash fall collection cylinder (10) and clogging of the ash fall collection cylinder (10) during doka ash clogging Three units of ash fall with built-in movable table function that enables the ash fall collection cylinder (10) to be arranged and assembled around the ash fall collection cylinder (10) so that the telescopic movement of the ash fall collection cylinder (10) operates smoothly in a balanced manner. An operation control circuit board (13) for intermittently and repeatedly operating the removal operation drive mechanism (12), the ash fall removal operation drive mechanism (12) at an arbitrary time setting, the ash fall removal operation drive mechanism (12), and the operation control circuit A drive power supply circuit section (14) of the substrate (13), the sensor section (11), the ash fall collecting cylinder (10), the ash fall removal operation drive mechanism (12), and the operation control circuit board (13); The drive power circuit (14) is fixed to the base (29) using a fixing bracket (30) or the like. Collection tube.

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