JP3028841U - Liquid filling device - Google Patents

Abstract

(57) Abstract: It is an object of the present invention to obtain a liquid filling device capable of increasing the filling pressure and shortening the filling time. SOLUTION: A two-opening valve 4 for filling a large flow rate and a small flow rate.
In a heavy-weight liquid filling device that fills the inside of the container 2 placed on the weighing table 1 with a filling nozzle 5, the lower end nozzle 5b can be deeply inserted into the inside of the container 2, and the vertical movement cylinder 6 supports the filling nozzle 5. Then, the liquid filling device in which the two opening valve 4 connected to the stock solution tank is connected to the filling nozzle 5.

Description

[Detailed description of the device]

[0001]

TECHNICAL FIELD OF THE INVENTION

 The present invention relates to a liquid filling device, and more particularly, to a heavy-duty liquid filling device for shortening the filling time.

[0002]

[Prior art]

As is well known, in the conventional gravimetric liquid filling device, a two-opening valve nozzle A as shown in FIG. 5 is used to fill a container such as a drum can C placed on a weighing table B with the liquid. That is, 2 opening valve nozzle A is moved up and down by an elevating cylinder D has a nozzle portion a ₁ which can be inserted into the mouth portion c of the drum C, supported on the tip of the valve stem a ₂ during the nozzle portion a ₁ The opening valve a ₃ is arranged.

In other words, the same opening valve a ₃ has a fully closed position shown in the drawing, a small opening position that slightly rises above this fully closed position and forms a slight gap with the nozzle portion a ₁ , It is possible to take a large opening position that rises above this small opening position and forms a large gap with the nozzle portion a _1, and the pressure liquid from the stock solution tank (not shown) can be used as a contact flap. It is introduced from the lunge a ₄ into the two opening valve nozzle A.

Therefore, in the weight type liquid filling device using the 2-opening valve nozzle A, the opening valve a₃ Is kept in the fully closed position, the 2-cylinder valve nozzle A is lowered to the position shown in the figure by the lifting cylinder D, and the nozzle portion a is set so as not to come into contact with the mouth portion c of the drum can C.₁ After the valve is inserted, the opening valve a₃ Is opened to a large opening position, the liquid in the drum can C is filled with a large flow rate under the supervision of the weighing platform B, and the liquid level in the drum can C reaches the level H.₁ Opening valve a₃ Is switched to the small opening position, the liquid is filled into the drum can C at a small flow rate, and the liquid level in the drum can C reaches the planned level H. ₂ That is, when the filling weight reaches the planned weight, the opening valve a₃ Is closed, and the lifting cylinder D raises the 2-opening valve nozzle A.

[0005]

[Problems to be solved by the device]

By the way, since the detected weight of the weighing platform B in the above-mentioned weight type liquid filling apparatus is in a state accompanied by a considerable wave phenomenon as shown by the curve α in FIG. 4, the 2-opening valve nozzle A is used. It is difficult to shorten the liquid filling time. That is, at the time of the initial high flow rate filling of the filling process, the filling liquid drops and flows into the inside of the drum can C from the nozzle part a ₁ which is away from the bottom of the can, so that the weight detection state of the weighing platform B is large. In addition, pulsation is included, and even when filling a small flow rate, the filling liquid squeezed by the opening valve a ₃ is vigorously ejected from the nozzle part a ₁ , and the ejection liquid strongly affects the already filled liquid surface. It is sprayed, and large pulsations are detected even in this filling detection state. Therefore, in the conventional gravimetric filling device, the filling pressure from the stock solution tank is suppressed as much as possible, the flow rate per unit time is reduced, and fluctuations in the detected weight are suppressed, thereby enabling a large flow rate completion signal and a small flow rate completion signal. You are getting a signal.

However, such a conventional measure has a problem that the large flow rate filling time T ₁ and the small flow rate filling time T ₂ become long, and the filling time required to fill a liquid of a predetermined weight becomes long. . In the above-described conventional gravimetric liquid filling device, when the liquid level rises at the end of the small flow rate filling process, the filling liquid vigorously ejected from the nozzle part a ₁ is reflected from the liquid surface and The part may overflow from the mouth part c. An object of the present invention is to provide a liquid filling device which can increase the filling pressure and can be filled in a short time in view of the problems of the conventional weight type liquid filling device as described above.

[0007]

[Means for Solving the Problems]

 In order to achieve this object, the present invention uses a two-opening valve for high-flow and low-flow filling to fill the inside of a container placed on a weighing platform with liquid, and a weight type liquid filling device A liquid filling device is proposed in which a filling nozzle capable of deeply inserting the nozzle into the container is supported by a vertically moving cylinder, and the two opening valve connected to the stock solution tank is connected to the filling nozzle. is there. Further, in the description of the preferred embodiment of the present invention described later, the filling nozzle that is released after the nozzle is deeply inserted into the container to a level below a predetermined liquid level, The two-opening valve that performs high-flow and small-flow filling while maintaining the level of the filling nozzle, and the vertical movement cylinder that raises the filling nozzle after the filling by the two-opening valve is completed. A liquid filling device having a structure is described.

[0008]

【Example】

Hereinafter, the embodiment of the liquid filling device according to the present invention will be described in detail with reference to FIGS. 1 to 4. FIG. 1 shows the whole of a liquid filling device according to the present invention. This liquid filling device is fixed on a supporting base 3 when filling a liquid such as a drum 2 placed on a weighing base 1 with a liquid. The opening valve 4 and the filling nozzle 5 connected to the discharge side of the 2-opening valve 4 are used. That is, the liquid intake 5a of the filling nozzle 5 supported by the support base 3 so as to be movable up and down by the vertically moving cylinder 6 is connected to the discharge portion 4a of the 2-opening valve 4 by using the flexible hose 7. The filling nozzle 5, which extends in a substantially vertical direction, has a nozzle 5b that can be inserted deeply into the mouth portion 2a of the drum can 2. This nozzle 5b is higher than the large flow level H ₃ and the small flow level H ₄ during liquid filling. It can be inserted inside the drum 2 to a deep position.

FIG. 2 shows the details of the filling nozzle 5. The filling nozzle 5 comprises a nozzle body 5c having the liquid intake port 5a, and the lower end of the nozzle 5b at the bottom of the nozzle body 5c is an opening / closing valve. It can be closed in 5d. A rod 5e fixed to the lower end of the open / close valve 5d penetrates through the nozzle body 5c, and an upper end of the rod 5e is connected to a piston 5g located in an open / close cylinder 5f. Therefore, the opening / closing valve 5d is controlled to be opened / closed by the pressure fluid to the pressure ports 5h and 5i formed at both ends of the opening / closing cylinder 5f, and thus is supplied from the flexible hose 7 when the opening / closing valve 5d is opened. The pressure liquid will flow out from the lower end of the nozzle 5b.

FIG. 3 shows details of a two-opening valve 4 used in the liquid filling device according to the present invention. The two-opening valve 4 has a liquid inlet 4b and a liquid inlet 4b to which the filling liquid is supplied from a stock solution tank (not shown). And a valve cylinder 4c formed with a discharge portion 4a connected to the filling nozzle 5, and the discharge portion 4a can be closed by a valve body 4e supported by a lower end portion of a valve rod 4d penetrating the valve cylinder 4c. .

A fully open piston 4g located in a pressure cylinder 4f is fixed to the upper end of the valve rod 4d, and a return spring 4h corresponding to the fully open piston 4g is provided inside the pressure cylinder 4f. When no pressure is applied to the pressure cylinder 4f, the valve element 4e is returned to the illustrated closed position by the force of the return spring 4h. Further, the upper end of the valve rod 4d is hollow, a first port 4i is formed at the upper end, and the first port 4i is connected to the pressure chamber below the fully open piston 4g.

A valve sleeve 4j is axially slidably fitted in an intermediate portion of the valve rod 4d, and a small opening piston 4k is provided at an upper end portion of the valve sleeve 4j facing the fully open piston 4g. It is fixed, and the pressure fluid can be supplied to the pressure chamber below the small opening piston 4k from the second port 4l. The inside of the pressure cylinder 4f accommodating the return spring 4h is opened to the atmosphere by the third port 4m.

Since the liquid filling apparatus according to the illustrated embodiment has the above-described structure, the liquid is filled in the drum can 2 through the following steps. First, when the drum 2 is positioned on the weighing platform 1, the vertically moving cylinder 6 lowers the filling nozzle 5 to the position shown by the phantom line in FIG. That is, in this descending position of the filling nozzle 5, the nozzle 5b of the filling nozzle 5 is at a position sufficiently deeper than the large flow level H ₃ and the small flow level H _{4 of the} drum can 2, but the filling nozzle 5 is in the same descending position. Then, the opening / closing valve 5d of the filling nozzle 5 is released by the opening / closing cylinder 5f, and at the same time, the pressure fluid acts on the first port 4i and the second port 4l of the two-opening valve 4 so that the two opening The valve body 4e of the valve 4 is fully opened, and the filling liquid of the stock solution tank passes through the discharge part 4a of the 2-opening valve 4, the flexible hose 7, the nozzle body 5c of the filling nozzle 5, and the nozzle 5b to the drum can 2. It is leaked inside.

At the time of high flow rate filling at this time, the filling weight accompanied by pulsation is detected on the weighing platform 1 that receives the drum can 2. However, when the filling amount approaches the high flow rate level H ₃ , the vertical movement cylinder is moved. The nozzle 5b of 6 is below the liquid surface. Therefore, the fluctuation of the liquid level in the drum 2 is settled rapidly, and the detected weight at the weighing platform 1 has a small pulsation as shown by the local line β in FIG. 4, so it is possible to know the scheduled filling weight without fail. You can As a result, the planned weight can be reliably detected on the weighing platform 1. Therefore, the stock solution pressure supplied to the 2-opening valve 4 and the filling nozzle 5 is increased to increase the filling flow rate per unit time. The flow rate filling time T ₃ can be shortened.

Further, when the high flow rate filling process is completed, the 2-opening valve 4 is switched by the signal from the weighing platform 1 and the supply of the pressure fluid to the first port 4i is stopped, so that the 2-opening valve 4 Becomes a small opening, and a small flow rate filling process is performed. In this case, even if the 2-opening valve 4 is throttled, the open / close valve 5d of the filling nozzle 5 continues to be in the open state, so that the filling liquid is vigorously ejected from the nozzle 5b of the filling nozzle 5 into the drum can 2. Although it can be prevented, since the nozzle 5b of the filling nozzle 5 is already below the liquid level in the drum can 2, the filling liquid flowing out from the nozzle 5b does not disturb the liquid level. That is, even in the small flow rate filling process, fluctuations in the detected weight due to the disturbance of the liquid level in the drum can 2 are suppressed, so that the small flow rate filling time T ₄ becomes very short.

After the filling of the drum can 2 with the liquid is finished, the supply of the pressure fluid to the second port 4l is stopped, the return spring 4h closes the valve body 4e of the two-opening valve 4, and the open / close cylinder 5f. The filling nozzle 5 is closed, the filling nozzle 5 is lifted by the vertically moving cylinder 6, and the filling process is completed.

[0017]

EFFECTS OF THE INVENTION As is clear from the above description, according to the present invention, the weight detected on the weighing table is stable, so that the filling pressure can be increased and a liquid filling device with a short filling time can be obtained.

[Brief description of drawings]

FIG. 1 is an overall front view of a liquid filling device according to the present invention.

FIG. 2 is a cross-sectional view of a filling nozzle used in the liquid filling device.

FIG. 3 is a sectional view of a two-opening valve used in the liquid filling device.

FIG. 4 is a graph showing the relationship between the detected weight and time of the liquid filling device shown in comparison with the conventional case.

FIG. 5 is a front view of a conventional liquid filling device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Measuring stand 2 Drum can 2a Mouth part 4 2 Opening valve 4a Discharging part 5 Filling nozzle 5b Nozzle

Claims (2)

[Scope of utility model registration request] 1. A gravimetric liquid filling device for filling a liquid into a container placed on a weighing table by using a two-opening valve for filling a large flow amount and a small flow amount. A liquid filling device characterized in that a filling nozzle that can be inserted deeply is supported by an up-and-down moving cylinder, and the two-opening valve connected to a stock solution tank is connected to this filling nozzle. 2. The filling nozzle, which is opened after deeply inserting the nozzle into the container to a level below a predetermined liquid level, and a large flow rate while maintaining the level of the filling nozzle. 2. The liquid filling according to claim 1, further comprising: the 2-opening valve for performing small flow rate filling; and the vertical movement cylinder that raises the filling nozzle after the filling by the 2-opening valve is completed. apparatus.