JPS6357670B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bottom valve operating device for a tank truck, particularly a tank truck having multiple chambers, which allows only the bottom valve of the chamber containing the type of liquid to be discharged to be opened during discharge. be.

In general, a tank truck having multiple chambers accommodates and transports a different type of liquid (for example, gasoline, diesel oil, kerosene, etc.) in each chamber.

However, the bottom valve of each chamber can be opened freely by turning the operating handle provided at the top of each chamber, so if the operator misoperates, a different type of liquid than the one that should be discharged may be discharged. There is a risk that the liquid may be damaged, and once an incorrect operation is performed, there is a problem that different types of liquids will be mixed and the liquid will become unusable.

In order to solve the above-mentioned dangers and problems, the present invention is designed so that only the bottom valve of the chamber containing the liquid type to be discharged can be opened at the time of discharge.

An embodiment will be described below with reference to the drawings. Reference numeral 1 denotes a tank having a plurality of chambers 2. Each of the rooms 2...
An input port 3 is formed at the top, and a bottom valve 4 is provided at the bottom, and a discharge pipe 5 is connected to each bottom valve 4.

Each of the bottom valves 4 is opened and closed by an operating device 6 provided at the top of each chamber 2.

Since the operating devices 6 for each of the chambers 2 have the same structure, only one will be explained below.

Reference numeral 7 denotes a bottom valve shaft extending upward from the bottom valve 4, with the tip of the shaft 7 protruding from the top of the tank 1, and a rectangular portion 8 having a rectangular cross section formed at the tip, and a threaded portion at the tip. 9 is formed.

Further, a threaded portion 10 is formed in the middle of the shaft 7, and the threaded portion 10 is screwed into a fixing member 11 fixed to the tank 1. By rotating the shaft 7, the shaft 7 is raised and lowered, and the bottom valve 4 can be opened and closed.

Reference numeral 12 denotes a flat first plate with a circular outer circumference, and the first plate 12 is fitted into the rectangular portion 8 of the shaft 7 and is integrated with the shaft 7.

On the upper part of the first plate 12, an auxiliary plate 13, which has a smaller diameter than the first plate 12 and forms a part of the first plate 12, is fitted into the rectangular part 8 of the shaft 7 and is integrated with the first plate 12. .

Reference numeral 14 denotes a second plate whose outer periphery has the same shape as the first plate 12 , and the second plate 14 is provided on the outer periphery of the auxiliary plate 13 .

Further, on the upper surface of the second plate 14, a liquid type display plate 15 forming a part of the second plate 14 is provided with screws 16, 1.
6, and a fourth plate is fixed on the surface of the display board 15.
As shown in the figure, ``light'', ``light'', and ``ga'' are written every 60 degrees, with ``light'' indicating light oil, ``light'' indicating kerosene, and ``ga'' indicating gasoline.

The display board 15 and the second plate 14 have a plurality of sets of different shapes arranged on the same radius near each display: square for light oil, circle for kerosene, and triangle for gasoline. Hole 17, 18, 19
A plurality of holes 1 are provided in the first plate 12 at positions facing the plurality of holes 17, 18, 19.
An engagement hole 20 that is somewhat larger than 7, 18, and 19 is provided.

In addition, the second plate 14 has another set of multiple holes 2.
1, 22, 23 are provided, and the plurality of holes 21,
22 and 23 are adapted to face an engagement hole 25 of a cover 24, which will be described later.

26 is a ratchet device that integrates the second plate 14 with the auxiliary plate 13 only when the second plate 14 is rotated in the bottom valve 4 closing direction (clockwise in FIG. 5).

The ratchet device 26 has a notched groove 2 on the outer periphery of the auxiliary plate 13 whose depth gradually becomes shallower in a clockwise direction.
A ball 28 is fitted into the cutout groove 27, and the ball 28 is biased clockwise by a spring 29. When the second plate 14 is now rotated clockwise, the balls 28 are pushed toward the shallower direction of the cutout grooves 27, and the auxiliary plate 13 is also rotated clockwise, causing the second plate to rotate clockwise. When the second plate 14 is rotated counterclockwise, the balls 28 resist the force of the spring 29 and are pushed deeper into the notch grooves 27, so that the rotation of the second plate 14 is not transmitted to the auxiliary plate 13. It's becoming like that.

24 is a cover that covers the display board 15;
4 is rotatably provided on the shaft 7 and is provided with a notch hole 30 through which a liquid type display on a display plate 15 appears. Further, an engagement hole 25 larger than the set of multiple holes 21, 22, 23 of the second plate 14 is provided at a position opposite to the notch hole 30, and
5 matches one hole 22 of a set of multiple holes 21, 22, 23, for example, a round hole 22 corresponding to kerosene, the liquid type display appearing in the cover notch hole 30 becomes "Light". It's summery.

31...... is a short pin for displaying the liquid type shown in Fig. 7, and the short pin 31...... has a different cross-sectional shape depending on the liquid type: kerosene is round, diesel oil is square, and gasoline is triangular. The short pins 31 are received from the storage base in accordance with the type of liquid to be introduced into each chamber 2, and the engaging holes 25 of the cover 24 and the second plate 14 are received. By inserting it into the holes 21, 22, 23 of..., the corresponding liquid type is displayed, and the cover 24... and the second plate 14...
...is becoming integrated.

At that time, the short pin 31...... is connected to the first plate 12.
Since the length does not reach ......, the first
It is designed not to engage with the engagement hole 20 of the plate 12. 32 is a long pin for determining the liquid type shown in FIG. 9, and the long pin 32 has a different cross-sectional shape depending on the liquid type.
Kerosene is round, diesel oil is square, and gasoline is triangular.The long pin 32 is received at a gas station, and the holes 17, 18, 19 of the second plate 14, which have the same shape as the long pin 32, and the first plate 12
The second plate 14 can be integrated with the first plate 12 by being inserted into the engagement hole 20 of the second plate 14.

33 is a nut screwed into the threaded portion 9 at the tip of the shaft 7.

It should be noted that the ratchet device is not limited to the structure as in the embodiment, but can have similar effects as long as it has a structure that allows the shaft to rotate only when the second plate is rotated in the bottom valve closing direction. be.

Further, the number of engagement holes in the first plate is not limited to one location.

The present invention has the above-mentioned structure, and its operation will be explained next. First, before introducing liquid at the storage base, the cover 24 is rotated clockwise in FIG. 2, and the bottom valve 4 is closed via the ratchet device 26. put.

After that, the liquid is introduced into the chamber 2 from the input port 3, and at the storage base, a short pin corresponding to the input liquid type, for example, a round short pin 31 for kerosene, is received.
When the cover 24 is rotated until the "light" is displayed as shown in the figure, the hole 22 of the second plate 14 that matches the engagement hole 25 of the cover 24 becomes a round shape that matches the shape of the short pin 31. The short pin 31 is inserted into the engagement hole 25 and the hole 22.

Then, the cover 24 and the second plate 14 are integrated, and the display state of kerosene can be maintained. By performing the above operation for each chamber 2, the liquid type of each chamber 2 can be displayed.

Next, when discharging the liquid, use a long pin 32 with a shape corresponding to the type of liquid to be discharged, among the long pins for determining the type of liquid placed at gas stations, etc., for example, as shown in Fig. 9, which corresponds to kerosene. Receive the long pin 32, hold it, climb to the top of the tank 1, and remove the long pin 3.
Since 2 is a round shape of kerosene, each operating device 6...
Find the inner round shape of the holes 17, 18, 19 of the second plate 14 (upper part of FIG. 9) that can be seen from the notch holes 30 of..., and insert the long pin 32 into the hole 18.

As a result, the long pin 32 is inserted into the engagement hole 20 of the first plate 12 as shown in FIG. 10, and the second plate 14 is integrated with the first plate 12.

In this state, move the cover 24 in the bottom valve 4 opening direction (second direction).
When rotated counterclockwise), the first plate 1
2, the shaft 7 rises, the bottom valve 4 opens,
Liquid is discharged through the discharge pipe 5.

At this time, even if the cover 24, which has holes 17 and 19 shaped differently from the long pin 32, for example, the lower cover 24 in FIG. 2
4 is not transmitted to the auxiliary plate 13, the cover 24 is idle and the bottom valve 4 is not opened.

When the discharge is completed, the cover 24 is rotated clockwise to close the bottom valve 4, and then the long pin 32 is removed and the product is returned to a gas station or the like. This completes the discharge work.

As described above, the present invention provides two sets of multiple holes with different shapes for each liquid type in the second plate, and provides engagement holes in each of the cover and the first plate, so that the short pins received at the storage base are engaged with the cover. The cover and the second plate are integrated by inserting them into the matching holes and the holes in the second plate, with the type of liquid to be added displayed.Meanwhile, the long pins received at a gas station etc. are inserted into the holes in the second plate and into the holes in the second plate. By inserting it into the engagement hole of the plate and integrating both plates, it is possible to open only the bottom valve of the chamber containing the liquid to be discharged, so that it is possible to open only the bottom valve of the chamber containing the liquid to be discharged. It is possible to reliably prevent erroneous display operations, and also to reliably prevent erroneous operations such as discharging a liquid different from the liquid that should be discharged.

[Brief explanation of the drawing]

Fig. 1 is an overall view, Fig. 2 is a partially enlarged view, Fig. 3 is a cross-sectional view taken along the line A-A in Fig. 2, Fig. 4 is a cross-sectional view taken along Fig. 3 B-B, and Fig. 5 is a cross-sectional view taken in Fig. 3 C- 6 is a sectional view taken along the line D-D in Figure 3, Figure 7 is an explanatory diagram of the operation at the time of loading, Figure 8 is an enlarged cross-sectional view of Figure 7 E-E, and Figure 9 is the operation at the time of discharge. The explanatory diagram, FIG. 10, is an enlarged cross-sectional view taken along the line FF in FIG. 9. 4 is a bottom valve, 6 is an operating device, 7 is a bottom valve shaft, 12 is a first plate, 14 is a second plate,
15 is a display board, 17 to 19 are holes, 20 is an engagement hole,
21 to 23 are holes, 24 is a cover, 25 is an engagement hole,
26 is a ratchet device, 30 is a notched hole, 31 is a short pin for displaying liquid type, and 32 is a long pin for determining liquid type.

Claims (1)

[Claims] 1. One end of a bottom valve operating shaft protrudes from the tank, a first plate is integrally provided at one end of the shaft, and a second plate having a liquid type display plate on the upper surface is rotatably provided, and between the two plates is provided with a ratchet device that becomes integral with the first plate only when the second plate is rotated in the bottom valve closing direction, and above the second plate is a ratchet device for displaying the type of liquid on the display board. A cover having a cutout hole is rotatably provided, and the second plate is provided with two sets of multiple holes of different shapes corresponding to liquid types,
The first plate is provided with an engagement hole larger than the plurality of holes at a position opposite to one set of the plurality of holes, and the cover is provided with an engagement hole larger than the plurality of holes at a position opposite to the other set of plurality of holes. A hole is provided, and when a liquid is added, a short pin with a shape corresponding to the type of liquid to be added is inserted through the engagement hole of the cover and a hole of the second plate with a shape that matches the pin shape. The cover and the second plate are integrated with the type display exposed through the notch hole, and when discharging liquid, a long pin with a shape corresponding to the type of liquid to be discharged is inserted into the second plate with a shape that matches the pin shape. A bottom valve operating device for a tank lorry, which integrates a second plate and a first plate by inserting a hole into an engagement hole of a first plate to enable a bottom valve opening operation.