JPS6357669B2 - - 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.

Generally, in a tank truck having multiple chambers, each chamber accommodates and transports a different type of liquid (for example, gasoline, diesel oil, kerosene, etc.). 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, 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. The tip of the shaft 7 protrudes from the top of the tank 1, and a rectangular portion 8 having a rectangular cross section is formed at the tip. A threaded portion 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 and 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 holes 17 and 18 of different shapes on the same radius near each display: square for light oil, round for kerosene, and triangular for gasoline. , 19 are provided in the first plate 12, and the holes 17, 19 are provided in the first plate 12.
Each hole 17, 18, 1 is located at a position opposite to 18, 19.
An engagement hole 20 somewhat larger than 9 is provided.

Reference numeral 21 denotes 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 21 has a notched groove 2 on the outer periphery of the auxiliary plate 13 whose depth gradually becomes shallower in the clockwise direction.
A ball 23 is fitted into the cutout groove 22, and the ball 23 is biased clockwise by a spring 24. When the second plate 14 is now rotated clockwise, the balls 23...... are moved into the notched grooves 22...
By being pushed in a shallow direction, the auxiliary plate 13 also rotates clockwise.On the other hand, when the second plate 14 is rotated counterclockwise, the balls 23...... exert the force of the spring 24... The rotation of the second plate 14 is prevented from being transmitted to the auxiliary plate 13 by being pushed toward the deeper side of the notch groove 22 .

25 is a cover that covers the display board 15;
5 is rotatably provided on the shaft 7 and is provided with a cutout hole 26 through which a liquid type display on the display plate 15 appears. An engagement device 27 for integrating the cover 25 and the second plate 14 is provided on the side surface of the cover 25 at a position opposite to the notch hole 26.

The engagement device 27 is connected to the cover 2 as shown in FIG.
5 and a bracket 28 fixed to the cover 25 support an engagement pin 30 having a handle 29 at the base end, and a spring 31 is attached to the engagement pin 30 so as to bias the engagement pin 30 inward. It is provided.

Further, the side surface of the second plate 14 is provided with the same number of engagement holes 32 as the number of liquid types, and the engagement pins 30
When the cover 2 engages with any of the engagement holes 32,
The notch hole 26 of No. 5 and the one-liquid type indication on the display plate 15 are made to match.

Reference numeral 33 denotes a connecting pin for determining the type of liquid shown in FIG. 7. The connecting pin 33 has a different cross-sectional shape depending on the type of liquid, and is round for kerosene, square for diesel oil, and triangular for gasoline. The coupling pin 33 is inserted into the notch hole 26 of the cover 25.
Hole 18 of second plate 14 of the same shape as seen from
By inserting it into the engagement hole 20 of the first plate 12, the second plate 14 is also inserted into the engagement hole 20 of the first plate 12.
is adapted to be integrated with the first plate 12.

34 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 can transmit rotation to the auxiliary plate only when the second plate is rotated in the bottom valve closing direction. It has the following.

Furthermore, the position of the hole in the second plate is not limited to a position close to the liquid type display, and may be provided in another position. It is sufficient to provide a hole through which the material can be inserted.

The present invention has the above-described structure, and its operation will be explained next. When liquid is introduced into the chamber 2, the cover 25 is rotated clockwise in FIG. 2 in advance, and the bottom valve 4 is closed via the ratchet device 21. I'll let you.
Thereafter, the liquid is introduced into the chamber 2 through the inlet 3, and in order to match the liquid type display with the notch hole 26 of the cover 25, the handle 29 of the engagement device 27 is pulled and removed from the engagement hole 32 of the second plate 14. Rotate the cover 25 until the liquid type display matches the notch hole 26, remove the handle 29 at the matching position, and the engagement pin 3
0 engages with the engagement hole 32, and the cover 25 and the second plate 14 are integrated.

Next, when discharging liquid, the discharging worker can receive a coupling pin of a shape corresponding to the type of discharged liquid, for example, a coupling pin 33 as shown in FIG. 7, from coupling pins placed at gas stations etc. If so, hold it and climb to the top of the tank 1, and since the connecting pin 33 has a round shape corresponding to kerosene, the notch hole 26...
The hole 17 of the second plate 14 is visible from...
Find the inner round shape of holes 18 and 19 (upper part of FIG. 7), and insert the connecting pin 33 into the hole 18.

Thereby, the coupling pin 33 is inserted into the coupling hole 20 of the first plate 12 as shown in FIG. 8, and the second plate 14 is integrated with the first plate 13.

In this state, move the cover 25 in the bottom valve 4 opening direction (second direction).
When rotated counterclockwise), the second plate 1
4 The shaft 7 is raised via the first plate 13, the bottom valve 4 is opened, and the liquid is discharged through the discharge pipe 5.

At that time, a cover 25 having a shape of holes 17 and 19 different from that of the coupling pin 33, for example, the cover 25 shown in the lower part of FIG.
Even if you accidentally rotate the bottom valve in the opening direction (counterclockwise), the rotation of the cover 25 will not be transmitted to the auxiliary plate 13 and the first plate 12 by the ratchet device 21, so the cover 25 will idle and the bottom will open. Valve 4... is not opened.

When the discharge is completed, the cover 25 is rotated clockwise to close the bottom valve 4, and then the coupling pin 33 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 a plurality of holes with different shapes corresponding to the liquid type in the second plate, and among the connecting pins of different shapes corresponding to the liquid type at gas stations etc., the connecting pin corresponding to the discharge liquid type is provided. receive,
The bottom valve of the chamber corresponding to the second plate can only be opened by inserting the connecting pin into the hole in the second plate, which has a hole with the same shape as the connecting pin. There is no danger of discharging a liquid other than the one that should be discharged, and the discharging operation becomes very simple.

[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 DD in FIG. 3, FIG. 7 is an operation explanatory diagram, and FIG. 8 is a sectional view when the bottom valve is opened. 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 plate, 17, 18, 19 are holes, 20 is an engagement hole, 21 is a ratchet device, 26 is a cutout hole, 2
7 is an engagement device.

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 provided, an engagement device is provided between the second plate and the cover that allows the cover to be integrated with the second plate at any position on the second plate, and the second plate is provided with a liquid type. A plurality of holes of different shapes corresponding to the plurality of holes are provided, and at least one engagement hole is provided in the first plate at a position opposite to the plurality of holes and larger than the plurality of holes, corresponding to the type of liquid to be discharged. By inserting a connecting pin in a shape that matches the shape of the second plate into a hole in the second plate that matches the shape of the pin and into an engaging hole in the first plate, both plates are integrated through the pin, and the bottom valve opening operation is performed. A bottom valve operation device for tank trucks that enables this.