JPH0518317Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a control device for a bottom valve in a tank lorry, which serves both as a bottom valve and an emergency valve.

(b) Prior art The conventional bottom valve and emergency valve are provided separately as shown in Utility Model Publication No. 55-33994, and the bottom valve 4 is opened and closed by operating the bundle 3 on the top of the tank 1. The emergency valve 6 is opened and closed by operating a control lever 1 behind the tank 1 that can be operated from the ground.

(c) Problems to be solved by the invention The above structure requires two valves, a bottom valve and an emergency valve, which increases costs.

Therefore, the purpose of this invention is to reduce costs by using one valve as both a bottom valve and an emergency valve.

(d) Means for Solving the Problems In order to solve the above object, this invention has an outer valve body that has a communication port that opens into the tank at the bottom of the tank, and a tank that is installed inside the outer valve body. A bottom valve is provided, which is rotatably operated by an upper bottom valve lever and includes an inner valve body that opens and closes the communication port,
The inner valve body is provided with a rod that protrudes from the valve box provided at the bottom of the bottom valve, and the lower end of this rod is provided with a rotary connecting portion that is connected to the emergency lever via an appropriate transmission member, and the rotary connecting portion is connected to the emergency lever via an appropriate transmission member. It consists of an upper block on the rod side that can be engaged and detached, and a lower block on the emergency lever side.One block has a 1/4 circular or 1/2 circular convex part, and the other block has a 1/2 circular convex part. The concave part is circular or 1/4 circular, and when the bottom valve lever is rotated to the closed position or closed position when the emergency lever is in the open position, only the upper block rotates, and when the bottom valve lever is in the open position, the emergency lever is rotated. The present invention is characterized in that the convex portion of one block and the concave portion of the other block are positioned so that the upper block and lower block rotate together in an engaged state when the block is operated to the closed position.

(e) Function When used as a bottom valve, rotating the bottom valve lever rotates the inner valve body and opens the communication port of the outer valve body, thereby opening the bottom valve.

At this time, the lower block having the concave portion or the convex portion remains as it is, and only the upper block having the convex portion or the concave portion rotates, and the emergency lever remains as it is.

Next, when used as an emergency valve, when the emergency lever is operated, the lower block having a concave or convex portion and the upper block having a convex or concave portion also rotate, and the communication port of the outer valve body closes, so the bottom valve is closed. Close.

(f) Embodiment Hereinafter, an embodiment of the present invention will be explained based on the drawings. Reference numeral 1 is a tank mounted on the vehicle body and containing flammable liquids such as gasoline and kerosene. 2 is provided above the outlet 2, and a bottom valve 4 is provided above the outlet 2 to open and close the outlet 2 by operating a bottom lever 3 provided at the top of the tank 1.

To explain the bottom valve 4, 5 is an outer valve body having the discharge port 2 at the bottom, and a pair of first valve bodies on the sides.
Communication ports 6, 6 are provided.

An inner valve body 8 connected to the bottom valve lever 3 via a rod member 7 is installed inside the outer valve body 5, and corresponds to a pair of first communication ports 6, 6 of the outer valve body 5. A pair of second communication ports 9, 9 are bored at the positions.

When the bottom valve lever 3 is operated and the first communication ports 6, 6 and the second communication ports 9, 9 communicate with each other, the bottom valve 4
is open, and closed when there is no communication.

Reference numeral 10 denotes a rod that is vertically disposed from the inner valve body 8, and this rod 10 is made to protrude from a valve box 11 that is provided below the bottom valve 4.

An upper block 13 having a 1/4 circular protrusion 12 at the lower end of the cylinder is fixed to the lower end of the rod 10.

A lower block 15 having a 1/2 circular recess 14 at the upper end of the cylinder is provided above the upper block 13, and the protrusion 12 and the recess 14 are connected to each other when the bottom valve lever 3 is closed, as shown in FIG. At the mark 16 position, the convex portion 12 is engaged with the right side of the concave portion 14, and the upper block 13 and lower block 15 are housed in a box 17, and the upper and lower blocks 1
3 and 15 and the box 17 form a rotational connection portion 24.

A bell crank 18 is provided on the lower block 15, and a transmission member 20 connects this bell crank 18 to an emergency lever 19 that is provided at the rear of the tank 1 and can be operated from the ground.

Reference numeral 21 denotes a spring provided between the bell crank 18 and a stay 22 hanging from the valve box 11, and this spring 21 is biased in a direction to rotate the emergency lever 19 counterclockwise.

Note that 23 is an open mark for the bottom valve 4.

By the way, in this embodiment, the upper block has a 1/4 circular convex part and the lower block has a 1/2 circular concave part;
The same effect can be obtained by making the recess of the lower block into a quarter circle, and when the bottom valve lever is in the close mark, the convex part is engaged on the right side of the recess.
The same effect can be obtained even if the convex part is engaged to the left of the concave part, and the upper block is made into a 1/4 circular or 1/2 circular concave part, and the lower block is made into a 1/2 circular or 1/4 circular concave part. A circular convex portion also has the same effect.

The present invention has the above-mentioned structure. Next, the operation will be explained. First, when the present invention is used as a bottom valve for discharging the liquid in the tank 1, the bottom valve lever 3
is rotated from the close mark 16 position to the open mark 23 position.

Then, the inner valve body 8 rotates via the rod member 7, and the first communication ports 6, 6 of the outer valve body 5 and the second communication ports 9, 9 of the inner valve body 8 communicate with each other. The liquid is discharged from the discharge port 2 through the valve body 11.

At this time, the convex portion 12 of the upper block 13
As shown in figures a and b, the recess 1 of the lower block 15
Just rotate from the right side in 4 and move to the left,
The lower block 15 does not rotate and the bell crank 18
and the emergency lever 19 remain as they are.

Next, when the liquid is being discharged and used as an emergency valve to stop the discharge in case of fire or the like, when the emergency lever 19 is pulled rearward, the bell crank 18 rotates against the force of the spring 21. .

Then, as shown in FIGS. 3b and 3c, the lower block 15 rotates 90 degrees counterclockwise, and as a result, the lower block 15 rotates the upper block 1.
Since the convex portions 12 of No. 3 are in contact with each other, the upper block 13 also rotates 90 degrees counterclockwise.

Then, the inner valve body 8 rotates, and the first communication ports 6, 6 of the outer valve body 5 and the second communication ports 9, 9 of the inner valve body 8 are disconnected, and the bottom valve 4 is closed, and the liquid is discharged. will be canceled.

(g) Effects of the invention As described above, in the present invention, the bottom valve can be operated by the bottom valve lever, and can also be operated by the emergency lever, so that the bottom valve can be used as both the bottom valve and the emergency valve, resulting in cost reduction.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the device of the present invention, Figure 2 a, b
3 is a perspective view of the upper block and the lower block, and FIGS. 3a, 3b, and 3c are sectional views taken along the line AA in FIG. 1, showing the operating state of the upper and lower blocks and the bottom valve lever. 1 is a tank, 3 is a bottom valve lever, 4 is a bottom valve, 5 is an outer valve body, 6 is a first communication port, 7 is a rod member, 8 is an inner valve body, 9 is a second communication port, 10 is a rod, 11 is a valve box, 12 is a convex part, 13 is an upper block, 14 is a recessed part, 15 is a lower block, 19 is an emergency lever,
20 is a transmission member.

Claims (1)

[Scope of utility model registration request] At the bottom of the tank, there is an outer valve body that forms a communication port that opens into the tank, and the valve is installed inside this outer valve body and is rotated by a bottom valve lever at the top of the tank.
A bottom valve is provided, which is composed of an inner valve body that opens and closes the communication port, and a rod that protrudes from a valve box provided at the bottom of the bottom valve is vertically disposed on the inner valve body, and an emergency lever is attached to the lower end of this rod. A rotary connecting portion is provided which is connected to the emergency lever via an appropriate transmission member.
4 A circular or 1/2 circular convex part and the other block a 1/2 circular or 1/4 circular concave part, and when the emergency lever is in the open position, the bottom valve lever is rotated to the open or closed position. When the bottom valve lever is in the open position, only the upper block rotates, and when the emergency lever is operated to the closed position with the bottom valve lever in the open position, the upper and lower blocks are engaged and rotate together. A control device for a bottom valve in a tank truck, characterized in that a concave portion of the other block is located.