JP2005162254A - Nozzle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a nozzle which can be used for a mouthful container, has no liquid leakage from an air suction mechanism part, is a low cost, has a reliable function, and has a good operability. <P>SOLUTION: A recessed part 12 is provided on an upper face at a back part of the nozzle, and an air opening 21 is opened at this recessed part. A liquid holding space part 23 is provided in an air suction path by mounting a cap 11 with an air pipe 22 projecting inside on this recessed part. In another way, the liquid holding space part 23 is provided in the air suction path by mounting a check valve 81 on the recessed part 12 with an opening part on the upper face of the back part of the nozzle, and fitting a check valve cap 82 with the air pipe 22 projecting inside of this check valve. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a nozzle that is used when being attached to a container mouth and injecting its internal liquid into another device.

When injecting fuel in a container into another device, a bellows nozzle without an intake mechanism is generally used as a nozzle attached to the container mouth. However, since this nozzle does not have an intake mechanism, it cannot be used unless it is a two-necked container or the like that has a mouth part that can supply air inside the container in addition to the nozzle mounting part. When discharging, naturally, an air supply port portion different from the nozzle mounting port portion must be opened. A general nozzle without an air intake mechanism has these disadvantages. Therefore, a nozzle having a partial air intake mechanism in the market, for example, FIG. 7 in which an air pipe is arranged in the nozzle, and an air port provided on the upper surface of the rear portion of the nozzle. 8 is also on the market. Apart from this, the present applicant has previously filed an application (Japanese Patent Application No. 2001-107967) in which an air pipe is attached to the rear part of the nozzle.
35-3797 JP-A-7-291295 Japanese Patent Application No. 2001-107967

  A commonly used nozzle that does not have an intake mechanism cannot be used for a one-port container because it does not have an intake mechanism, and when used with a two-port container, it is also used by removing the cap that is separate from the nozzle attachment for air supply There is a hassle to do.

  On the other hand, there is FIG. 7 as a nozzle having an intake mechanism. However, since it takes a lot of work to manufacture, there is a risk that the increase in cost is inevitable, and the attached air tube moves easily, so that a predetermined function cannot be obtained. In addition, since the air tube protrudes from the rear of the nozzle, it is inconvenient to handle.

  On the other hand, the nozzle of FIG. 8 provided with an air port on the upper surface of the rear part of the nozzle is simple in structure and has no problem in terms of cost and handling, but is simply provided with a hole. May leak or liquid may jump out.

  In addition, the applicant's earlier application has proposed that an air pipe is attached to the rear part of the nozzle or that a check valve is provided inside the air pipe. In particular, a check valve is provided inside the air pipe. The number of parts increases, the structure is complicated, the air pipe diameter tends to be large, dust is likely to enter, etc., and there is room for improvement in manufacturing and operation, and a large hole is formed in the appearance of the nozzle It was not good looking.

As a means of claim 1, a recess 12 is provided on the upper surface of the rear part of the cylindrical nozzle having both ends opened, and an air port 21 is opened in the recess. Then , the liquid holding space portion 23 is provided in the air suction path by attaching the cap 11 having the air pipe 22 protruding inward to the recess portion 12 .

According to a second aspect of the present invention, a concave portion 12 having an opening is provided on the upper surface of the rear portion of the cylindrical nozzle having both ends opened, and a check valve 81 is mounted in the concave portion . The check valve cap 82 having the air pipe 22 protruding inward is fitted into the check valve 81 to provide the liquid holding space 23 in the air suction path.

  Since the nozzle of the present invention is provided with a compact intake mechanism, it can be used in a single-port container, and when used in a two-port container, there is no need to remove an air intake cap different from the nozzle mounting cap. In addition, there is no inconvenience in handling because the mechanism is large as shown in FIG. 7 or the air tube protrudes from the rear of the nozzle, and the air tube moves and affects the discharge function. It always maintains a stable discharge function.

When the air port is simply opened as shown in FIG. 8, there is a small amount of liquid leakage from the air port at the time of discharge. Is temporarily held in the liquid holding space 23 formed by the nozzle recess 12 and the cap 11, and is immediately returned to the nozzle during air intake accompanying decompression in the container due to continued discharge thereafter. There is no leak.

  Furthermore, by using the check valve 81, it is possible to more reliably prevent liquid leakage from the air port. That is, when the internal liquid enters the nozzle in the initial stage of discharge, the liquid tries to leak through the check valve 81. However, when such hydraulic pressure is applied to the check valve, the ball in the check valve Since the passage is blocked, there is no liquid leakage from the check valve. When the inside of the container is depressurized as the internal liquid is discharged, the ball that has blocked the passage in the check valve is opened, and external air is supplied into the container through the check valve.

The type that does not use a check valve as in claim 1 is less expensive. However, when the container is provided with an air supply port in addition to the nozzle mounting port and the air supply port is opened, the air pipe 22 is used. The liquid is ejected from the part. On the other hand, although the nozzle using the check valve 81 increases the cost, it can be used not only for a one-port container but also for a container with an air supply port open. Furthermore, since any nozzle of the present invention has no projection outside the nozzle, it can be used by firmly fixing it to the container mouth by passing a perforated cap from the tip of the nozzle and sandwiching the nozzle rear flange to the container mouth. Is possible.

  Furthermore, the ball-operated check valve can be made much more compact than the valve mechanism exemplified at the time of the previous application of the applicant, and at the same time, the stable function can be obtained, and the mechanism itself is simple and has few parts and is easy to manufacture. Also, the ball used for the valve part has a great merit such that a material having high durability and chemical resistance can be obtained.

Example 1
1 is a plan view and a side sectional view of Example 1, FIG. 2 is an AA sectional view in FIG. 1, FIG. 3 is a BB sectional view in FIG. 1, and this is an example of claim 1.
A small amount of liquid leakage from the air port 21 at the initial stage of discharge and a small amount of liquid jumping out of the air port during discharge are temporarily held in the liquid holding space 23 formed by the nozzle recess 12 and the cap 11 and the discharge is continued. When air is supplied into the container from the air port 21 due to the decompression in the container, the air is immediately returned to the nozzle together with this air.

  Since the air pipe 22 provided in the cap 11 has a higher liquid holding force when the nozzle is reversed as compared with a simple opening, it can prevent leakage to the outside, and at the same time, the air port 21 and the air pipe Since the center of 22 is displaced, the liquid jumping from the air port is prevented from directly jumping out of the air pipe 22.

  If this type of nozzle is used in a container having an air supply port and the air supply port is opened, the internal liquid is ejected from the air tube 22 at the time of discharge. There is no problem if it is used exclusively for a single-mouth container, etc., or if the air supply port is closed and used for other containers with an air supply port. If you want to use it for a container that cannot be closed, or if you want to use it for containers that cannot close the air supply port, you can add a plug that closes the air tube 22 to the cap 11 and open and close the air tube 22 with the plug. This makes it possible to cope with either case.

Example 2
Figure 4 is a plan view and a side sectional view of the embodiment 2, FIG. 5 DD sectional view in FIG. 4, FIG. 6 is a similarly EE sectional view in FIG. 4, which is an example of Claim 2.
Even if a slight liquid leakage from the check valve 81 occurs, the liquid is held in the liquid holding space 23 formed by the check valve and the check valve cap 82, and the pressure inside the container is reduced due to the continuous discharge of the internal liquid. When external air is supplied from the check valve 81 into the container, the air is returned to the nozzle together with the air. This type of nozzle can be used not only for a single-port container but also for a container with an air supply.

It is the top view and side sectional view of Example 1. It is AA sectional drawing in FIG. It is BB sectional drawing in FIG. It is the top view and side sectional view of Example 2. It is DD sectional drawing in FIG. It is EE sectional drawing in FIG. This is a nozzle having a conventional intake mechanism. This is a nozzle having a conventional intake mechanism.

Explanation of symbols

11 Cap 12 Recessed portion 21 Air port 22 Air tube
23 Liquid holding space 81 Check valve 82 Check valve cap

Claims (5)

A recess 12 is provided on the upper surface of the rear portion of the nozzle, and an air port 21 is opened in the recess. And the nozzle which attached the cap 11 which has the air pipe | tube 22 which protruded inside to this recessed part 12. FIG. The nozzle which provided the dent 12 which has an opening part in the nozzle rear upper surface, and equipped with the check valve 51 in the dent part. A recess 12 having an opening is provided on the upper surface of the rear part of the nozzle, and a check valve 81 is mounted on the recess, and a check valve cap 82 having an air pipe 22 protruding inward is fitted to the upper part of the check valve. Nozzle. The center position of the opening for inserting the air port 21 in the recess 12 or the check valve 81 in the recess 12 provided on the upper surface of the rear part of the nozzle is deviated from the center position of the air pipe 22. Or the nozzle of Claim 3. The nozzle according to claim 2, 3 or 4, wherein the check valves 51 and 81 are ball operated type check valves.

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