JPH063276Y2 - Liquefied gas filling machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a liquefied gas filling machine for filling a container such as a cylinder with liquefied gas such as LP gas.

2. Description of the Related Art When a liquefied gas is filled in a container, the container is placed on a weighing table, and the weighing table measures the total weight of the container and the gas filled in the container. Then, by detecting that the measured value has reached a constant value, it is common to detect that a predetermined amount of liquefied gas has been filled in the container, and then the filling operation is completed.

2 and 3 illustrate such a conventional liquefied gas filling machine. Here, 1 is a main body of the filling machine, and has an operation panel 2 for the filling work. The filling machine main body 1 is provided with a weighing table 3 having a built-in load cell, and a container 4 can be placed on the weighing table 3 to measure its weight. The filling machine body 1 is provided with a liquefied gas supply port 5. Reference numeral 6 denotes a filling nozzle, which is connected to the filling machine main body 1 via a hose 7 and is connected to the container 4 as shown by a virtual line in FIG. The liquefied gas from 5 can be filled into the container 4. A support base 8 is provided on the weighing base 3, and the support base 8 holds an intermediate part of the hose 7. When the filling operation is not performed, the filling nozzle 6 is supported by being hooked on the supporting portion 9 provided in the filling machine body 1.

In such a conventional configuration, the filling nozzle 6 and the portion of the hose 7 associated with the filling nozzle 6 are in a state of being lowered from the weighing platform 3 when the filling is not performed, but the container 4
Is mounted on the weighing table 3 and is in a state of being mounted on the weighing table 3 when performing filling. Therefore, if the weights of the filling nozzle 6 and the hose 7 are subtracted in advance as the tare value, the weight of only the container 4 and the liquefied gas filled in the container 4 can be measured, and the liquefied gas can be accurately weighted. It becomes possible to fill.

Problems to be Solved by the Invention By the way, since the load cell etc. built in the weighing platform 3 generally causes zero drift, it is necessary to perform automatic zero point correction such as zero tracking or manual zero point correction in a timely manner. This zero point correction must be performed when the container 4 is not placed on the weighing table 3, but at that time, the filling nozzle 6 has also descended from the weighing table 3. As a result, the weights of the filling nozzle 6 and the hose 7 become negative, and the weight display by the weighing platform 3 does not become zero, so that there is a problem that the zero point correction cannot be actually performed.

On the contrary, if the metering display is set to zero while the filling nozzle 6 is unloaded from the weighing table 3, the measured value is increased by the weight of the filling nozzle 6 or the like during the filling, and the filling weight of the liquefied gas becomes inaccurate.

Further, if an empty container 4 is placed on the weighing table 3 and the zero point correction can be performed with the filling nozzle 6 connected to the container 4, only the weight of the liquefied gas to be filled can be measured, which is ideal. However, in the case of filling the liquefied gas, the inside of the container 4 usually contains some residual gas, and therefore such a thing cannot be actually performed. further,
If the filling nozzle 6 and the hose 7 are placed on the weighing table 3 each time the zero point correction is performed, such a problem can be solved.
It is necessary to remove the filling nozzle 6 once instructed by the support part 9 from the support part 9 and place it on the weighing platform 3, and after the zero point correction, it interferes with the loading of the container 4 into the weighing platform 3. Since it is necessary to move the filling nozzle 6 to the support portion 9 again to prevent such a situation, the workability is extremely poor.

Therefore, the present invention has an object to solve such a problem and to make it possible to always perform zero point correction of a weighing table easily.

Means for Solving the Problems In order to solve the above problems, the present invention provides a weighing table on which a container to be filled with liquefied gas is placed and which can weigh the container.
It is configured to have a filling nozzle connectable to a container on the weighing table, and a support base provided on the weighing table and capable of supporting the filling nozzle and a hose associated with the filling nozzle. .

Operation According to such a configuration, when the container is not placed on the weighing platform, the filling nozzle is supported by the support platform on the weighing platform. Therefore, at this time, the weights of the filling nozzle and the hose associated with the filling nozzle are all supported by the weighing platform. As a result, the zero point correction, the one-touch zero correction, or the zero tracking automatic correction is always easily performed under the condition including the weights of the filling nozzle and the hose.

Embodiment FIG. 1 shows an embodiment of a liquefied gas filling machine according to the present invention. Here, the same members as those shown in FIGS. 2 and 3 are designated by the same reference numerals.

In FIG. 1, a support base 11 is provided on the weighing base 3, and a holding portion 12 for holding an intermediate part of the hose 7 and a filling nozzle 6 are hooked on the support base 11. And a supporting portion 13 for supporting the same.

In such a configuration, when the container 4 is not filled with the liquefied gas, the filling nozzle 6 is supported by the supporting portion 13, and is placed on the weighing table 3 via the supporting portion 13 and the supporting base 11. Will be posted. Therefore, the weight of the filling nozzle 6 and the portion of the hose 7 attached to the filling nozzle 6 can be included when performing the zero point correction of the weighing platform, and the predetermined filling weight can be accurately set at the time of the subsequent filling. Can be weighed. Further, when the filling is completed, the filling nozzle 6 removed from the container only needs to be supported by the supporting portion 13, and therefore the work is easy.

Effect of the Invention As described above, according to the present invention, the filling nozzle when the filling is not performed is supported by the support base on the weighing table, so that the zero point correction can be performed accurately and easily.

[Brief description of drawings]

FIG. 1 is a side view of a liquefied gas filling machine according to an embodiment of the present invention, FIG. 2 is a side view of a conventional liquefied gas filling machine, and FIG.
The figure is a front view of the liquefied gas filling machine of FIG. 3 ... Weighing stand, 4 ... Container, 6 ... Filling nozzle, 11 ... Supporting stand, 12 ... Holding part, 13 ... Supporting part.

Claims (1)

[Scope of utility model registration request] 1. A weighing platform on which a container to be filled with a liquefied gas is placed and which can weigh the container, a filling nozzle connectable to the container on the weighing platform, and a weighing nozzle provided on the weighing platform. A liquefied gas filling machine, comprising: the filling nozzle, and a support frame capable of supporting a hose associated with the filling nozzle.