JPH0471795B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a liquid filling nozzle used for filling containers with liquids such as fluid foods.

Conventional technology This type of filling nozzle is, for example,
As disclosed in Publication No. 26550, a vertical cylindrical nozzle body, a damper attached to the lower end of the nozzle body so as to be able to swing vertically, and a resistance against flowing liquid arranged inside the nozzle body. body and
It consists of a connecting member that connects the free end of the damper and the resistor, and an elastic member that biases the resistor upward. It is known that a damper is provided with a resistor so that the resistor is always located in the intermediate reduced diameter portion regardless of the opening degree of the damper, and that moves the intermediate reduced diameter portion up and down.

Problems to be Solved by the Invention In the above-mentioned nozzle, if high-speed filling is performed in order to perform the filling operation more efficiently, it is sufficient to increase the hydraulic pressure acting on the resistor. To achieve this, it is necessary to reduce the gap between the intermediate reduced diameter part and the resistor by reducing the diameter of the intermediate reduced diameter part, but this gap is a passage for the liquid flowing down inside the nozzle body, so If it is made smaller, the passage resistance increases, so there is a limit to doing so.

An object of the present invention is to provide a filling nozzle capable of faster filling than the above-mentioned filling nozzles.

Means for Solving the Problems A liquid filling nozzle according to the present invention includes a vertical cylindrical nozzle body, a damper attached to the lower end of the nozzle body so as to be swingable in the vertical direction, and a liquid filling nozzle disposed inside the nozzle body. In a liquid filling nozzle consisting of a resistor against liquid, a connecting member connecting the free end of the damper and the resistor, and an elastic member urging the resistor upward, the nozzle body has an upper large diameter section. , an intermediate reduced diameter part and a lower large diameter part are provided, and when the damper is less than a predetermined opening degree, the resistor is positioned in the intermediate reduced diameter part, and when the damper has the same opening degree or more, the lower large diameter part is located. It is characterized in that the resistor is positioned at.

Function In the filling nozzle according to the present invention, the nozzle body is provided with an upper large diameter portion, an intermediate reduced diameter portion, and a lower large diameter portion, and the resistor is positioned in the intermediate reduced diameter portion when the damper is less than a predetermined opening degree. Since the resistor is positioned in the lower large diameter part when the damper is opened at the same opening degree or more, the resistor moves up and down between the intermediate reduced diameter part and the lower large diameter part. .
Therefore, the gap between the intermediate reduced diameter part and the resistor should be made relatively small to increase the hydraulic pressure acting on the resistor, and the gap between the resistor in the lower large diameter part should be compared to avoid increasing the passage resistance. By increasing the target
When the resistor is located in the intermediate reduced diameter part, the damper is opened rapidly, and when the resistor is moved away from the intermediate reduced diameter part and entered the lower large diameter part, the liquid inside the nozzle body is flows down smoothly.

Also, when the damper is closed, the resistor is located at the reduced diameter portion, and the hydraulic pressure acting on the resistor is large, so that the tamper is slowly closed.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the liquid filling nozzle is connected to the lower end of the filling cylinder 11 of the filling machine via a check valve 12, and has a diameter reduced in the middle of its height. A vertical cylindrical nozzle main body 14 in which a part 13 is provided, and a damper 15 that is attached to the lower end of the nozzle main body 14 so as to be swingable in the vertical direction.
, a resistor 16 for the flowing liquid arranged so as to be able to move up and down between the reduced diameter part 13 and the lower part of the nozzle body 14, and a guide member 17 that guides the up and down movement of the resistor 16. , a connecting member 18 connecting the free end of the damper 15 and the resistor 16, and an elastic member 19 urging the low antibody 16 upward.

The nozzle body 14 includes an upper member 21 and an intermediate member 22.
and a lower member 23.

The upper member 21 includes an upper end large diameter portion 25, an upwardly expanding intermediate tapered portion 26, and a lower end small diameter portion 27.
The diameter of the upper large diameter portion 25 is equal to that of the filling cylinder 11. A collar 28 is provided at the upper end of the outer surface of the upper large diameter portion 25.
is provided, and the flange 30 of the flange nut 29 is provided on this.
is hooked from below and the nut 29 is screwed into a male thread 31 provided at the lower end of the outer surface of the filling cylinder 11, thereby achieving connection between the filling cylinder 11 and the nozzle body 14. A collar 32 is provided in the middle of the height of the outer surface of the lower end small diameter portion 27,
The diameter of the portion 33 below the collar 32 of the lower end small diameter portion 27 is uniform, the outer surface thereof is formed smoothly, and the portion 33 forms the insertion opening of the spigot joint. An annular groove 34 is formed on the outer surface of this insertion port 33.

The intermediate member 22 includes an upper small diameter portion 36, a downwardly expanding intermediate tapered portion 37, and a lower large diameter portion 38. The inner surface of the upper end small diameter part 36 is formed smoothly, into which the insertion port 33 is fitted, and the upper end small diameter part 36 forms a socket 39 of the spigot joint. A slit 40 is provided in the portion of the upper end small diameter portion 36 facing the annular groove 34 of the insertion port 33.
is formed, and by fitting the retaining ring 41 into the annular groove 34 through the slit 40, the socket 3
9, the insertion port 33 is prevented from coming out. Further, the collar 2 of the lower end small diameter portion 27 of the upper member 21 is
8 and the upper end of the lower end small diameter portion 36 of the intermediate member 22, a rotation stop pin 42 is driven in. Then, the lower end small diameter portion 27 of the upper member 21 and the intermediate member 2
The lower end small diameter portion 36 of No. 2 forms the reduced diameter portion 13 throughout the nozzle body 14 . A male thread 43 is provided on the outer surface of the lower end large diameter portion 38 .

The lower member 23 includes an upper cylindrical portion 45 and a lower square cylindrical portion 46. The diameter of the upper cylindrical portion 45 is approximately equal to that of the lower end large diameter portion 38 of the intermediate member 23. A female thread 47 is provided on the inner surface of the upper cylindrical portion 45, and a male thread 43 at the lower end of the intermediate member 22 is screwed into the female thread 47, thereby connecting the intermediate member 22 and the lower member 23. In this state where the two are connected, a collar 48 is provided on the inner surface of the cylindrical portion 45 at a slight distance from the lower end of the intermediate member 22. The lower opening edge of the lower rectangular tube portion 46 has a quadrangular shape, and an inverted trapezoidal hanging guide plate 49 is provided on one of two opposing sides of the quadrangular shape.

The damper 15 is a double door type damper consisting of a pair of opening/closing plates 51 sandwiched between both guide plates 49. The opening/closing plate 51 includes a square bottom wall 52 and a pair of triangular side walls 53 rising from both edges of the bottom wall 52. Bottom wall 52 of both opening and closing plates 51
are each fixed to the horizontal pin 54 at the end corresponding to the base of the opening/closing plate 51. The ends of both horizontal pins 54 are rotatably received at the ends of the upper edge of the guide plate 49. When both opening and closing plates 51 are closed, the bottom wall 52 of both opening and closing plates 51 has a cross section V.
take shape. Also, while the opening/closing plates 51 are opening and closing, the outer surface of the side wall 53 of both opening/closing plates 51 is connected to the guide plate 49.
is slidably in contact with the opposing inner surface of. Double opening/closing plate 5
An upwardly protruding ear 55 is provided at the center of the upper surface of the bottom wall 52 of 1, and one hole 56 is formed in each of both ears 55.

The resistor 16 is mushroom-shaped and consists of a vertical rod-shaped handle 61 and a horizontal disc-shaped cap 62 fixed to the upper end of the handle. The lower end of the handle 61 is formed into a vertical plate shape, and one hole 63 is bored therein. The umbrella 62 has a center hole 64, through which the upper end of the handle 61 is inserted and protrudes upward, and a retaining ring 65 is fitted in the protrusion.
The upper surface of the umbrella 62 is formed into a truncated conical shape.

The guide member 17 connects a cylindrical portion 71 into which the handle 61 is slidably fitted, an arm 72 that is Y-shaped in plan view and extends radially from the cylindrical portion 71, and the tip of the arm 72. It consists of an annular portion 73. The annular portion 73 is held in the gap between the lower end of the intermediate member 22 and the collar 48 on the inner surface of the lower member 23 and is fixed there.

The connecting member 18 consists of one upper rod 81 and two lower rods 82. Upper and lower annular bent portions 83 and 84 are provided at the upper and lower ends of the upper rod 81, and upper and lower hook-shaped bent portions 85 and 86 are provided at the upper and lower ends of the two lower rods 82, respectively. The upper annular bent portion 85 is passed through the hole 63 at the lower end of the handle 61. The upper hook-shaped bent portions 85 of the two lower rods 82 are respectively latched onto the lower annular bent portions 84 . The lower hook-shaped bent portions 86 of the two lower rods 82 are hooked into the holes 56 of both the opening and closing plates 51, respectively.

The elastic member 19 is a compression coil spring, which is interposed between the cylindrical portion 71 of the guide member 17 and the cap 62 of the resistor 16 and fitted into the handle 61 thereof. The spring force is such that the damper 15 can be kept closed against the weight of the liquid within the damper 15 and the nozzle body 14.

In FIG. 1, the closed state of the damper 15 is shown by a solid line, and the fully open state of the damper 15 is shown by a chain line. That is, the resistor 16 is positioned in the intermediate compressed portion 13 when the damper 15 is less than a predetermined opening, and the resistor 16 is positioned in the lower large diameter portions 37 and 38 when the damper 15 is at the same opening or more. It is made to be located.

The liquid introduced into the upper end of the nozzle body 14 is discharged from the lower end of the nozzle body 14 via the upper large diameter portions 25, 26, the intermediate reduced diameter portion 13, and the lower large diameter portions 37, 38 in order. When the liquid that has passed through the large diameter parts 25 and 26 approaches the reduced diameter part 13, the flow velocity when passing there becomes faster than the flow velocity when passing through the upper large diameter parts 25 and 26. The opening degree of the damper 15 increases by that amount, and then the reduced diameter portion 13
When the liquid that has passed through approaches the lower large diameter portions 37 and 38, the flow velocity when passing there becomes slower than the flow velocity when passing through the reduced diameter portion 13, and the liquid passes through the damper 15 at the same slow speed. do. Therefore, generation of air bubbles due to agitation of the liquid discharged from the nozzle body 14 can be prevented, and smooth high-speed filling becomes possible.

FIG. 3 shows another embodiment. In this embodiment, a downwardly protruding ear 92 is provided at the lower end of a handle 91 of the resistor 16, and two holes 93 are bored in this ear. Further, in this embodiment, the connecting member 18 includes two upper rods 94 and two lower rods 95. Hook-shaped bent portions 96 are provided at the upper ends of the two upper bars 94, and annular bent portions 97 are provided at the lower ends thereof. The hook-shaped bent portions 96 of the two upper bars 95 are respectively hooked into two holes 93 in the ears 92 at the lower end of the handle 91. The two lower rods 95 are both formed in an annular shape as a whole, and are passed through the holes 56 of both opening and closing plates 51 and the annular bent portions 97 of the two upper rods 94, respectively.

Effects of the Invention According to the present invention, the gap between the intermediate reduced diameter part and the resistor is made relatively small so as to increase the hydraulic pressure acting on the resistor, and the gap between the lower large diameter part and the resistor is made relatively small so as to increase the hydraulic pressure acting on the resistor. By making the gap between the body relatively large, when the resistor is located in the intermediate reduced diameter part, the damper is opened rapidly, and the resistor is moved away from the intermediate reduced diameter part and the damper is moved to the lower large diameter part. Since the liquid flows smoothly down the nozzle body when the nozzle enters the nozzle, it is possible to perform filling at a higher speed than with the conventional filling nozzle described at the beginning.

In addition, when the damper is closed, the resistor is located at the reduced diameter part, and the fluid pressure acting on the resistor is large and the tamper is closed slowly, so there is no risk of liquid splashing due to the sudden closing action of the damper. There is no.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view, FIG. 2 is a cutaway perspective view of the nozzle body, and FIG. 3 is a partial vertical sectional view showing another embodiment. 13... Reduced diameter part, 14... Nozzle body, 15...
...Damper, 16...Resistor, 17...Guiding member, 1
8... Connection member, 19... Elastic member, 25, 26
...Upper large diameter section, 37, 38...Lower large diameter section.

Claims (1)

[Scope of Claims] 1. A vertical cylindrical nozzle body, a damper attached to the lower end of the nozzle body so as to be swingable in the vertical direction, a resistor against flowing liquid disposed inside the nozzle body, and a damper. In a liquid filling nozzle consisting of a connecting member that connects the free end and the resistor, and an elastic member that biases the resistor upward, the nozzle body has an upper large diameter section, an intermediate reduced diameter section, and a lower diameter section. A large diameter portion is provided, and when the damper is less than a predetermined opening degree, a resistor is positioned in the intermediate reduced diameter portion, and when the damper is at the same opening degree or more, a resistor is positioned in the lower large diameter portion. A liquid filling nozzle characterized in that: