JPH06329197A - Filling structure in liquid storage container - Google Patents

Abstract

PURPOSE:To shut off liquid supply at a desired level instantaneously and reduce variation in an amount of discharged liquid, and decrease deterioration of a valve part with a lapse of time. CONSTITUTION:The structure is comprised of a container casing having a liquid discharge opening 12; a valve 28 provided in the liquid filling opening 12 and energized in the direction of closing a liquid passage 23; a valve holding means 27 which holds the valve 28 so that it is kept open when a liquid is filled into the container 10; and a valve-hold interrupting means F which, when the liquid L in the container 10 exceeds the specific liquid-level as the liquid is being discharged, interrupts the act of keeping the valve open by the valve holding means 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container filling structure for storing liquid such as liquefied gas and kerosene, and in particular, liquid replenishment from outside the container according to the liquid level of the liquid stored inside the container. The present invention relates to a filling structure in a liquid storage container configured to control the temperature.

[0002]

2. Description of the Related Art A float that moves up and down according to the height of a stored liquid (hereinafter, referred to as a liquid level) is provided in a container, and the float has a function as a valve opening / closing actuator to replenish the liquid. At times, a filling structure in a container that attempts to prevent overfilling of liquid is widely known.

FIG. 4 is a schematic view of a filling structure in a liquid storage container. This container 60 is also called, for example, an above-ground bulk container, and the liquid filling port 6 is provided on the side of the container 60.
1, and the liquid L is supplied into the container 60 from here. A float 63 is attached inside the container 60 so as to be rotatable around a fulcrum 62.
The arm 64 of the valve 66 has a valve 66 for opening and closing a liquid inlet 65 into the container 60, depending on the position of the float 63 in the container.
Is provided.

The action is to fill the liquid from the outside with
When the float 63 inside the container 60 gradually rises as the liquid level rises, the arm 64 rotates around the fulcrum 62, and eventually the valve 66 closes the liquid inlet 65, whereby overfilling of the liquid L can be prevented. It is like this.

[0005]

However, since the container 60 has a structure in which the liquid inlet 65 is gradually closed according to the height of the float 63 that gradually changes when the liquid is replenished, it is used as an inflow control valve. The open / close response cannot be said to be high, and the liquid filling cannot be instantaneously interrupted due to the liquid filling pressure, the liquid filling speed, the state of the liquid level, etc. at that time, and the liquid storage amount in the container 60. Tends to vary.

In addition, the valve 66 is usually composed of a metal plate covered with rubber packing, and since almost the entire area thereof is immersed in a liquid, it may deteriorate with time and the sealing performance may deteriorate. There is.

The present invention has been made in view of the above problems, and the supply of the liquid can be instantaneously cut off at a desired place, the variation in the amount of the liquid to be filled is small, and the valve portion An object is to provide a liquid storage container capable of reducing the degree of deterioration over time.

[0008]

In order to achieve the above-mentioned object, according to the present invention, a liquid storage which controls the liquid supply from the outside of the container according to the liquid level of the liquid stored inside the container. A filling structure in a container for use, comprising a container casing having a liquid filling port, a valve body provided in the liquid filling port and biased in a direction to close a liquid passage, and a valve body for filling the container with the liquid. The valve holding means for holding the valve opened state and the valve holding interruption means for interrupting the holding of the valve opened state by the valve holding means when the liquid in the container exceeds a predetermined liquid level due to liquid filling Is characterized by.

[0009]

The valve element biased in the direction of closing the liquid passage can be reliably held in the open state by the valve holding means, while it is held by the valve holding means when the liquid supply reaches a predetermined amount. The filled valve body can be momentarily opened by the valve holding interruption means to momentarily interrupt the filling of the liquid.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional front view of an essential portion showing a first embodiment of a filling structure for a liquid storage container of the present invention, FIG. 2 is a sectional front view of an essential portion showing a second embodiment, and FIG. 3 is the same sectional view. It is a side view.

In the figure, E is a liquid filling structure of the liquid storage container 10, which is a container casing 11 having a liquid filling port 12 and a liquid passage 2 provided in the liquid filling port 12.
3, the valve body 28 biased in the direction of closing
The valve holding means 27 for holding the valve 10 in the valve open state at the time of filling the container 10 with the liquid and the holding of the valve open state by the valve holding means 27 keeps the liquid L in the container 10 at a predetermined liquid level with the liquid filling. It is composed of a valve holding interruption means F which is interrupted when exceeding.

To explain further, the liquid L is stored in the container 10.
At the time of filling, the replenishment pipe 15 extending from, for example, a bulk truck (liquid carrier) (not shown) is connected to the liquid filling structure E. A pipe opening / closing mechanism 16 is provided at the tip of the supply pipe 15, and is automatically opened when the supply pipe 15 is mounted on the liquid filling structure E.

The liquid filling structure E is provided with a substantially L-shaped housing 22 which is attached to the liquid filling port 12 by a bolt 21. A liquid passage 23 for guiding the liquid L from the supply pipe 15 into the container 10 is formed inside the housing 22.

In the liquid passage 23, an externally actuated ball valve 24 for controlling the liquid flow by an operator is mounted on the upstream side of the liquid flow at the time of filling. The ball valve 24 rotates in the liquid passage 23 so that the upper and lower liquid passages 23 communicate with each other and shut off the rotary valve body 25.
And a handle 26 connected to the rotary valve body 25 for rotating the same. Note that FIG. 1 is in a communication state.

On the downstream side of the ball valve 24, the liquid passage 23 is bent to the container 10 side at a substantially right angle,
The bent portion is provided with a valve holding means 27 for preventing overfilling. The valve holding means 27 is seated on a valve seat 28a formed in the housing 22 to allow the liquid passage 23
And a valve stem 29 connected to the valve body 28 and extending downstream of the liquid passage 23. A flange 30 having a diameter larger than the stem shaft diameter is formed on the downstream side of the valve stem 29.

The valve holding means 27 biases the valve body 28 by the compression spring 31 in the direction of closing the liquid passage 23, and closes the liquid passage 23 except when the liquid is filled. That is, the compression spring 31 is supported by the spring receiver 32 fixed to the downstream side of the valve body 28, and biases the valve body 28 upward in the drawing.

As a means for operating the valve holding means 27, a portion of the housing 22 above the valve holding means 27 is
A return lever 33 for pushing down the valve body 28 to fill the liquid and opening the liquid passage 23 which has been closed until then.
And a push rod 34. The push rod 34 is slidably supported with respect to the housing 22, and when the liquid is filled, the force from the return lever 33 is transmitted to the valve body 28 and pushes it downward.

Inside the container 10, there is provided a float 35 which floats on the surface of the liquid L and rises in response to the rising liquid level during filling. In this embodiment, this float 35 is
A liquid (liquefied gas, kerosene, etc.) that is filled with two molded resins (for example, polyacetal resin) that have been welded
It is made of a material that is sufficiently durable against, and does not deteriorate with time.

Float 35 constituting the valve holding interruption means F
Is fixed to an end portion of one arm 36 arranged in the container 10, and the other end of the arm 36 is rotatable around a pivot pin 37 fixed to the housing 22. It is pivotally attached to the hook member 38a. Hook member 3
8a together with the other hook member 38b supports the fulcrum 37
A scissor type valve holding portion that opens and closes around is configured, and a valve holding portion is pressed downward and a flange 30 of the valve holding means 27 that is in a valve open state is sandwiched from both sides to be locked at the valve end. A taper and a notch that converge with the stem 29 are formed. Further, a link member 39 for connecting to the arm 36 is rotatably connected to an end portion of the other hook member 38b, and the other end of the link member 39 is rotatably connected to the arm 36. . In order to enable the opening and closing of the hook members 38a and 38b around the pivot pin 37, the liquid passage 23 of the housing 22 is expanded below the spring receiver 32. In the figure, 40 is a safety valve.

Liquid filling structure E constructed as described above
The action of filling the liquid will be described below.

First, when the supply pipe 15 of the bulk truck (not shown) is connected to the housing 22, the pipe opening / closing mechanism 16 provided at the tip of the supply pipe 15 automatically opens to open the pipe 15 and the liquid passage. 23 is communicated with. Next, the operator pushes down the return lever 33 (the position indicated by the solid line in FIG. 1) and pushes the valve body 28 through the push rod 34.
The compression spring 31 is lowered in opposition to the upward biasing force, and the flange 30 at the tip of the valve stem 29 is moved to both hook members 3.
8a and 38b are engaged (state of FIG. 1).

By this operation, the valve body 2 is set in the housing 22.
8 will be opened, and then the operator
Is rotated in the opening direction as shown in FIG. 1, and liquid filling is started from this. After the filling is started in this manner, it is preferable that the return lever 33 is returned to the dotted line position in the figure in preparation for the valve closing operation of the valve body 28 that is to come.

When the liquid replenishment to the container 10 progresses and the volume of the liquid L inside the container 10 approaches a predetermined appropriate value, the float 35 is gradually immersed in the liquid L and the buoyancy causes the arm 36 to move in the figure. , Rotate counterclockwise. As a result, the rectangle formed by the arm 36, the hook members 38a and 38b, and the link member 39 is gradually crushed in the vertical direction, and when the liquid volume reaches a certain appropriate value, the hook is released from the flange 30. Members 38a, 38b
Will come off.

In this way, the hook members 38a, 38b
Immediately after the restraint by the valve stem 29 is released, the valve stem 29 is displaced upward by the repulsive force of the compression spring 31, the valve body 28 closes the liquid passage 23, and the liquid supply from the bulk truck side is stopped as described above. Will be. In addition, in replenishing the liquid, the biasing force of the compression spring 31 in the direction of closing the valve body 28 is naturally set to be larger than the liquid supply pressure.

When the liquid supply from the filling side is stopped in this way, the operator finally returns the handle 26 of the ball valve 24 to the original position, closes the liquid passage 23, and completes a series of filling operations. Is completed.

2 and 3 show a second embodiment of the present invention. In these figures, the same components as those of the previous embodiment are designated by the same reference numerals as those in FIG. 1, and their detailed description is omitted.

Unlike the previous embodiment, the liquid filling structure E according to this embodiment includes a straight type housing 52 extending above the liquid filling port 12. Similarly, inside the housing 52, the liquid L from the supply pipe 15 is stored in the container 10.
A liquid passage 23 is formed for guiding the inside.

In the liquid passage 23, a ball valve 24 for controlling the liquid flow is mounted on the most upstream side of the liquid passage 23.
Valve holding means 27 for preventing overfilling is provided downstream of the ball valve 24. The valve holding means 27 closes the valve except when the liquid is filled, as in the first embodiment, and includes a valve body 28, a valve stem 29 with a flange 30, a compression spring 31, and a spring receiver 32.

A return lever 53 is provided at the side of the housing 22 on the side of the valve holding means 27 to push down the valve body 28 from the outside when filling the liquid and to open the liquid passage 23 which has been closed until then. Axis 5 of return lever 53
Numeral 4 is rotatably fitted in the housing 22, and a substantially L-shaped first lever 55 constituting a valve holding interruption means F is fixed to an end portion located in the liquid passage 23.
Further, a substantially V-shaped second lever 56 for contacting the flange 30 and pushing it down when the valve body 28 is opened is mounted on the housing 22 so as to be rotatable around a fulcrum P. 55 on the short leg side and the second lever 56.
The end portion which does not come into contact with the flange 30 is pivotally attached via a link plate 57.

According to the present embodiment, the shaft 58 extending from the float (not shown) which constitutes the valve holding interruption means F.
Is rotatably attached to an attachment member 59 fixed in the housing 22, and the tip end of the supported shaft 58 is provided at the long leg side end of the first lever 55 during liquid filling. A claw 58a acting on the bar 55a is provided at a substantially right angle.

The operation of the liquid filling structure E of the second embodiment during liquid filling will be described below. When filling the container 10 with the liquid L, the operator first sets the return lever 53 to the position shown in FIG.
Rotate counterclockwise as shown in. This return lever 5
With the rotation of 3, the first lever 55 rotates from the dotted line position in the drawing to the solid line position, and this rotation is further transmitted to the second lever 56 via the link plate 57 (solid line position).

As a result, the second lever 56 rotates in the counterclockwise direction around the fulcrum P from the position indicated by the dotted line in the figure, so that the valve body 28 is moved through the one end 56a that contacts the flange 30. It is lowered to open the liquid passage 23 (liquid filling start). At this time, the repulsive force of the compression spring 31 is applied to the second lever 56, and this is applied to the fulcrum P.
A force for rotating the link plate 57 in the clockwise direction is applied, but in this state, the link plate 57 becomes substantially horizontal as shown in FIG. 2, and the link portion with the second lever 56 moves from the connecting portion to the first lever 55. The force transmitted to the connecting portion with and is directed to the shaft 54 as it is. As a result, this axis 5
A reaction force that balances the transmission force acts from 4, and the valve body 28 is held in the valve open state by the balance of this force.

In this way, when the liquid supply to the container 10 progresses with the valve body 28 open and the volume of the liquid L inside the container 10 approaches a predetermined appropriate value, the buoyant force on the float causes The shaft 58 rotates counterclockwise in the figure around the supporting portion by the mounting member 59. As a result, the claw 58a at the tip of the shaft 58, which has been in a non-contact state until then,
When the liquid volume reaches a certain appropriate value, the first lever 55 contacts the long leg side end portion of the first lever 55 and rotates the lever 55 in the clockwise direction around the shaft 54.

As a result, the balance of the forces around the levers 55 and 56, which have been kept open by the link plate 57 until then, becomes unbalanced all at once due to the displacement of the first lever 55, and each lever 55 and 56 and the link plate 57 are again displaced toward the position indicated by the dotted line in FIG. 2, and in the valve holding means 27, the valve stem 29 is immediately displaced upward by the repulsive force of the compression spring 31, and the valve is closed all at once. It becomes (liquid supply stop).

When the liquid supply from the filling side is stopped as described above, the operator finally returns the handle 26 of the ball valve 24 to the original position and the liquid passage 23
Is closed, and a series of filling work is completed.

The second embodiment of the present invention has been described above.
The float used here is also preferably formed of a material (for example, a polyacetal resin material) that is less likely to deteriorate with respect to the filled liquid, as in the first embodiment. Further, in the second embodiment, the valve opening of the valve body 28 is held by the delicate force relationship around the shaft 54 of the return lever 53, but the rotation of the return lever 53 required for opening the valve body 28. The angle may be set to be slightly larger than the illustrated angle change so that the link plate 57 is stably held in a so-called center-over state in which the link plate 57 rises to the left end.

As described above, according to each of the above-described embodiments, since the liquid filling port 12 is provided and the valve holding means 27 is provided therein, the valve holding means 27 and its peripheral mechanism are provided for the liquid L after the liquid replenishment is completed. Is not soaked, and deterioration of the quality of the mechanism itself over time is prevented.

Further, the valve opening of the valve holding means 27 is balanced by the force around the hook members 38a, 38b (first embodiment) and the shaft 54 (first embodiment) while being biased in the closing direction by the compression spring 31. 2 embodiment),
Once this constraint is released, the compression spring 3
The repulsive force of 1 restores the valve closed state, so that the valve actuation response of the valve holding means 27 is improved, and the variation in the amount of filled liquid is reduced.

[0040]

As described above, according to the present invention, the valve body biased in the direction of closing the liquid passage can be surely held in the open state by the valve holding means, while the liquid is supplied. When the predetermined amount is reached, the valve body held by the valve holding means can be momentarily opened by the valve holding suspending means to interrupt the filling of the liquid momentarily.

[Brief description of drawings]

FIG. 1 is a sectional front view of a main part showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional front view of essential parts showing a second embodiment of the present invention.

FIG. 3 is a side view of FIG.

FIG. 4 is an explanatory view showing a conventional float valve structure.

[Explanation of symbols]

 10 Container 12 Liquid Filling Port 23 Liquid Passage 27 Valve Holding Means 28 Valve Body 29 Valve Stem 30 Flange F Valve Holding Interrupting Means 35 Float 36 Arms 38a, 38b Hook Members 55, 56 Lever 57 Link Plate 58 Shaft 58a Claw L Liquid

Claims (1)

[Claims] 1. A filling structure in a liquid storage container, wherein liquid supply from the outside of the container is controlled according to the liquid level of the liquid stored inside the container, the container casing having a liquid filling port, A valve body provided in the liquid filling port and biased in a direction of closing the liquid passage,
When the liquid in the container exceeds the predetermined liquid level as the liquid is filled, the valve holding means holds the valve body in the open state when the liquid is filled in the container, and the holding of the open state by the valve holding means is performed. A filling structure in a liquid storage container, characterized in that it comprises a valve holding interruption means for interrupting.