JPS5848680B2 - Elbow lock device for siphon pipe for draining accumulated liquid in rotating rolls such as drying rolls - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is designed to drain unnecessary liquid accumulated on the inner lower side of rotating rolls such as dry rolls, water-cooled rolls, glossy rolls of paper machines, water-cooled rolls of rolling mills, and plastic sheet manufacturing rolls. It concerns a device for locking the elbow of a siphon tube.

As shown in Figure 2, liquid such as drain accumulates inside each of the rotating rolls, but as the amount increases, the waving condition becomes more severe, and eventually the rolls are turbulently shaken and the force resisting the water flow is exceeded. Generates forces in the miscellaneous directions of the columns.

As a result of this fluid movement, the distal end of the siphon tube connected to the conventional gravity-suspending elbow shown in Figure 1 is at the mercy of an acting force that exceeds its own weight, causing the female and male portions of the elbow to opens, and gas inside the roll, such as steam, enters from there, and the differential pressure between the internal pressure of the roll and the drain or other destination for draining the accumulated liquid breaks down, making it impossible to discharge the accumulated liquid.

Incidentally, if the tip of the tip tube comes into contact with the inner wall of the roll, there is a risk that the elbow legs will open, and a similar situation will occur.

However, in order to compensate for this defect of self-weight suspension type elbows, it is possible to press the hinge part with a spring and add the frictional force to the dead weight of the tip tube, or to incorporate a spring and an eccentric lever into the hinge part to apply force to the dead weight of the tip tube. Although improved products have been provided that can add additional friction, these means that are incorporated into a small hinge part still have difficulty resisting the moment due to the turbulence of the fluid received at the tip of the tip tube, and can also cause hinge friction, rust, etc. As a result, the tip tube, which has been raised once, remains in the raised state, which often results in the inability to discharge drain or the like.

The wooden invention was made in view of these conventional circumstances, and utilizes the principle of a "drop-in lock" to connect the male part of the tip tube to the female part of the base tube without relying on the weight of the tip tube of the elbow. Even if the tubes are locked and subjected to fluid turbulence, wave force, or come into contact with the inner wall of the tip of the distal tube, both tubes will not open, and by rotating the base tube side in half, it can be dropped. The lock can be easily unlocked and the base tube side and tip tube side can be opened horizontally, allowing easy entry and exit from the inner cavity of the boss of the roller.

The following will be explained by an example of the drawings taking a dry roll for paper making as an example. In FIG. The inserted siphon tubes 4a and 4b form an elbow connecting the base tube 3a and the tip tube 3b, and the present invention relates to a locking device for the elbow.

More details are as shown in FIGS. 4, 5, 6, and 9.

That is, according to the present invention, the siphon tube 3 has its base tube 3a.
An elbow 4a having a female portion 5 is fixed to the tip thereof, and an elbow 4b having a male portion 6 is fixed to the proximal end of the tip tube 3b.

And those elbow 4a. 4b is pivotally connected to the hinge main body γ via a holder 11.12 so that the female part 5 and the male part 6 are fitted face-to-face.

The hinge main body γ has a certain thickness, and is provided with a drop space 8 in the shape of a lower squeeze, whose one side is the row side surface 11a of the holder 11 of the elbow 4b on the side of the tip tube 3b, and has a restraint space 8a at the top.

A ball 9 is enclosed within the dropping space 8 as a dropping member.

That is, the holder 11 is locked in a state in which the ball 9 is fitted into the drop space 8, and the upward movement of the tip tube 3b is prevented (FIG. 5).

Maroku: The top of the hinge main body γ has a hook 10a at the tip.
The lever rod 10, which has a rear end of the handle 10b facing slightly upward, is always maintained in a horizontally balanced state and when the handle 10b is moved upward, the tip hook 10a can grasp the ball 9 in the drop space 8. It is pivoted in position.

This lever 10 provides a means for helping the ball 9 to leave the drop space 8, as will be described later, and together with the above configuration, achieves the object of the present invention.

Next, we will explain how to use the siphon tube equipped with the device of the present invention. First, in order to insert the siphon tube 3 into the rotary dry roll 1, the hinge H should be oriented vertically downward as shown in Fig. Turn the base tube 3a in half.

Then, the ball 9 in the drop space 8 falls into the retaining part 8a, so the distal tube side elbow 4b which is in the locked state is released, and the distal tube 3b and the base tube 3a move down by their own weight, and the base tube side female part 5 and The tip tube side male part 6 opens and both tubes 3a+3b are in a horizontal state.

In this state, the base tube 3a is passed through the boss inner cavity of the roll 1, and when it is inserted to a predetermined position, the base tube 3a is turned half way again so that the hinge portion H faces vertically upward.

Then, as shown in FIGS. 5 and 6, the tip tube 3b falls and hangs due to its own weight, and its male portion 6 is fitted face-to-face with the female portion 5 on the base tube side, and at the same time, the ball 9 of the retaining portion 8a is lowered. Drop into the squeezing drop space 8 as far as there is a gap, and the tip tube side holder 1
1 row side surface 11a is pressed contact P1, the opposite side is pressed contact P2
, P3 and is completely locked in the drop space 8.

Now, in order to pull out the siphon tube 3 from the roll 1, it is sufficient to perform the same operation as when inserting it (a half-rotation operation of the base tube 3.a), but at that time, the ball 9 must be removed from the drop space 8. In order to help this, a configuration including a lever 10 as shown in the figure can be considered.

That is, as shown in FIG. 8, the lever rod 10 maintains a horizontally balanced state even when the hinge part H is pointing vertically downward, but from this state it moves the base pipe 3a outward (to the left in the eighth part). When you try to pull it out, the rear end of the handle 10b of the lever 10 is slightly stuck. upward (
In the same figure, since it is upside down, it is curved downward), so the rear end of the handle 10b hits the inner wall of the roll 1 and moves downward, so that the tip hook 10a grasps the ball 9 in the drop space 8. .

Then, the base tube 3a is further pulled. Then, with this principle,
The force applied to the tip hook 10a that grips the ball 9 overcomes the ball friction force in the drop space 8, and the ball 9 easily falls and moves to the holding part 8a.

At the same time, the tip tube 3b rotates and falls due to its own weight and hits the tip hook 10a of the lever 10 by the umbilical holder 11.

Then, when the base tube 3a is pushed inward again, the lever lever 10 leaves the inner wall of the roll 1 and becomes parallel to the hinge portion H, and the tip tube 3b becomes horizontal with the base tube 3a.

Therefore, as shown in Fig. γ, it can be pulled out from the inner cavity of the boss 2 without any trouble.

As described above, the present invention has the effect of achieving the object listed at the beginning; however, due to the conventional insufficient or inability to discharge the liquid accumulated in the roll, (a) it is difficult to maintain a constant roll surface temperature; (b) It was possible to completely eliminate the problems such as the power required to drive the rolls becoming large and the siphon tube itself becoming easily broken due to the large torque generated by the cy liquid fluid.

In addition, each contact point P1 sP of the drop-in space 8 of the drop-in lock
2 sP3, even if the contact surface between the female part 5 and the male part 6 of the ball 9 is disturbed due to work or wear and corrosion due to use, the ball 9 will fall under its own weight along the inner contact point of the drop space 8, so the female part will always remain in contact with the female part. 5 and the male part 6 are fitted under tight pressure, and there is no leakage of fluid, and the purpose of discharging the liquid in the roll 1 by differential pressure can be achieved.

Since it is manufactured based on the basic structure of the conventional self-suspension type elbow, it has the advantage of being relatively easy to manufacture and inexpensive.

[Brief explanation of drawings]

Figure 1 is a vertical side view of the conventional device, Figure 2 is Figure 1 A-A
Figure 3 is a vertical cross-sectional front view, Figure 3 and subsequent figures show an embodiment of the invention. Side view, Figure 6 is Figure 5B-
B' is a cross-sectional plan view, FIG. γ is an enlarged longitudinal sectional side view of the boss inner cavity of the roll, FIG. 8 is an enlarged longitudinal sectional side view showing the operation of the lever, and FIG. 9 is a cutaway perspective view of the main part. 1... Rotating dry roll (part), 2...
...The boss, 3...Siphon tube, 3a...
...The base tube, 3b...The tip tube, 4a
...Base tube side elbow, 4b...Distal tube side elbow, H...Hinge part, 5...Female part, 6
...Male part, γ...Hinge main body, 8...
...Lower squeezing fall space, 8a... Its holding part, 9... Ball (dropping member), 10...
・Lever lever, 10a... Hook at the tip, 10b
... Its operating handle, 11... Tip tube side holder, 11a... Its example side, 12...
・Base tube side holder, P 1 s P 2 e P 3
・・・・・・Contact point in the drop space.

Claims (1)

[Scope of Claims] 1. A siphon tube 3 inserted in a bent manner into a rotating dry roll 1 via a hinge portion H has an elbow 4a having a female portion 5 at the tip of its base tube 3a, and a tip tube 3b thereof. An elbow 4b having a male portion 6 is fixed to the base end of the elbow 4.
a, 4b are pivotally connected to the hinge main body γ via a holder 11.12 so that the female part 5 and the male part 6 are fitted face-to-face;
Furthermore, inside the hinge main body 1l, there is an elbow 4b on the tip tube 3b side.
A rotating drying roll or the like characterized in that a drop space 8 in the shape of a lower squeezer is provided with the row side surface 11a of the holder 11 as one side and a holding space 8a at the upper part, and a drop member 9 is enclosed in the drop space 8. Siphon tube elbow lock device for draining liquid accumulated in the roll. 2. The siphon tube 3 inserted into the rotating dry roll 1 in a bent manner via the hinge H has an elbow 4a having a female portion 5 at the tip of its base tube 3a, and a male portion at the proximal end of its tip tube 3b. 6 and fix the elbows 4b with
a. 4b is pivotally connected to the hinge main body γ via a holder 11.12 so that the female part 5 and the male part 6 are fitted face-to-face,
Further, within the hinge main body γ, there is provided a lower squeeze-shaped drop space 8 whose one side is the outer surface 11a of the holder 11 of the elbow 4b on the tip tube 3b side and which has a holding space 8a at the top. The member 9 is enclosed, and furthermore, the tip part is attached to the hook 10a and the handle part 10b is attached to the upper part of the hinge main body 1.
The lever rod 10, whose rear end is slightly upward, is always maintained in a horizontally balanced state, and when the handle 10b is moved upward, the tip hook 10a pivots to a position where it can grasp the drop member 9 in the drop space 8. An elbow locking device for a siphon pipe for discharging accumulated liquid in a rotating roll such as a drying roll.