JP2006160340A - Filling valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems that a liquid scatters and contaminates a container mouth and strikes a liquid surface to cause bubbles due to an increased flow rate of the liquid to cause a disturbance of the liquid when a liquid valve is closed after the completion of filling the liquid, or that the liquid freely falls from a nozzle and strikes against the bottom of a container to cause the bubbles by surrounding air to contaminate the mouth of the container at the initial stage of the filling. <P>SOLUTION: A long valve rod including a valve element at its lower part is vertically movably mounted in a long hole provided at the center of a valve body of a filling valve, and a liquid passage is formed of an internal surface of the long hole of the valve body and the outer peripheral surface of the valve rod. The filling valve is formed of a protruding conical seal portion narrowing upward and provided at an upper part of the valve body and a recessed conical valve seat narrowing upward provided on the long hole of the valve body, to form the filling valve having the liquid valve which closes when a valve rod rises and opens when the rod lowers. The lower end of the nozzle of a liquid outlet provided at the lower end of the liquid passage is inclined by an angle of α° with respect to the horizontal plane, and a periphery of the tip is made to be oval and sharpened on the horizontal plane. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a filling valve of a rotary filling device that fills a container such as a PET bottle or a bottle can with a liquid such as drinking water.

In order to fill liquids such as drinking water into containers such as PET bottles and bottle cans, a rotary filling device is usually used, and the disk is almost passed through a plurality of filling valves provided on the outer periphery of the rotating disk. Filled during one revolution.
Normally, in the case of a beverage containing carbon dioxide (hereinafter referred to as a gas-containing liquid), the container is sealed and filled under the pressure of the counter gas, and in the case of a beverage that does not contain gas (hereinafter referred to as a non-gas liquid). Is performed at atmospheric pressure with the container open.

A configuration of a conventional non-gas liquid filling valve will be described.
FIG. 8 is a side sectional view showing an outline of a conventional filling valve used for filling a non-gas liquid. In FIG. 8, the filling valve 1 accommodates a valve body 2 having a vertically long hole in the center and a vertically long valve rod 3 loosely fitted in the vertical hole so as to be movable up and down. A cylindrical liquid passage 4 is formed between the inner peripheral surface of the vertical hole and the outer peripheral surface of the valve stem 3 so as to run up and down.
The upper part of the valve body 2 is provided with a liquid supply port 7 and a diaphragm 9, and the lower part is provided with a concave conical surface valve seat 2 a narrowing downward at the lower part of the valve chamber having a slightly larger diameter, and a nozzle ( (Liquid discharge port) 5 and, if necessary, a filter 6 is held.

The valve stem 3 is formed with a valve body 3a having an outer diameter gradually increasing downward at a lower portion, and a convex cone-shaped seal portion 3b having an outer diameter gradually decreasing downward at a lower portion of the valve body 3a. A liquid valve 8 that opens and closes the liquid passage 4 is formed by a valve seat 2 a provided at a lower portion of the valve 2. The upper part of the valve stem 3 passes through the center of the diaphragm 9 and joins it, and further protrudes to the outside through the upper wall of the valve body 2 and is connected to the air cylinder 10 via a joint fitting. The upper side of the passage 4 is bent at a right angle to form a liquid supply port 7, which is connected to the liquid layer of a liquid storage tank (not shown) by a liquid supply pipe, and the lower side is connected to the nozzle 5 with a narrowed diameter and a cylindrical shape. Yes.
Reference numeral 11 denotes a bracket for attaching the filling valve 1 to the rotating disk of the filling apparatus, and 12 denotes a container holder that holds the container 13 and moves up and down.

The operation of the non-gas liquid filling valve will be described.
In the filling valve 1, the valve rod 3 is pushed downward by the air cylinder 10, and the liquid valve 8 is closed as shown by a two-dot chain line in FIG. 8.
When the container 13 is sent to a predetermined position just below the filling valve 1 by a conveyance device (not shown), the container holder 12 grasps the neck of the container 13 and reaches a predetermined height separated by an appropriate distance below the nozzle 5. Lift up. Next, the valve rod 3 is pulled up by the air cylinder 10 to open the liquid valve 8 (see the solid line in FIG. 8), and the liquid supplied from the liquid supply port 7 flows in the direction of the arrow shown by the solid line by its own weight, and is free from the nozzle 5. It falls and is filled into the container 13. The liquid leaving the nozzle 5 is increased in speed and contracted to fall to the bottom of the container and accumulate, the air in the container 13 is sequentially extruded, the extruded air flows in the direction of the arrow indicated by the broken line, Passes between the outside of the incoming liquid and the inner peripheral surface of the container mouth and goes out. When a predetermined amount of liquid is filled, the valve rod 3 is lowered by the air cylinder 10 and the liquid valve 8 is closed to complete the filling. Then, the container holder 12 is lowered and the container 13 is sent to the next step. Be plugged.

The structure of a conventional gas-filled liquid filling valve will be described.
FIG. 9 is a side sectional view showing a lower portion of a conventional gas-filled liquid filling valve.
In FIG. 9, 21 is a filling valve, and the filling valve 21 has a configuration similar to that of the conventional filling valve 1 for non-gas liquid, 22 is a valve body, 23 is a valve rod, 24 is a liquid passage, and 25 is a nozzle. is there. The difference from the filling valve 1 is that a gas passage and a sealing means for the container 13 are provided.
The valve body 22 includes an exhaust gas passage 31 and a seal member 32 in the lower part, the lower side of the exhaust gas passage 31 opens at the lower end of the liquid passage 24, the upper side branches into two, one of which is a gassing valve and a gassing valve. The other passes through the single chamber, and the other passes through the snift valve and snift chamber and is opened to the outside air through the exhaust pipe. The seal member 32 is fixed to the lower surface of the valve body 22 by a bell ring 33. The valve stem 23 is provided with a valve body 23a in the lower part, and a liquid valve 28 that opens and closes a liquid passage 24 by a seal portion 23b on the lower surface of the valve body 23a and a valve seat 22a provided at the lower end portion of the valve body 22 is provided. Form. A spreader 34 is provided at the lower end of the valve stem 23, and a counter gas passage 35 including the spreader 34 is provided at the center of the valve stem 23. The upper part of the counter gas passage 35 is connected to the gas layer of the liquid storage tank via an open / close valve (not shown). The lower part of the spreader 34 protrudes below the seal member 32, and the lower end spreads downward in a conical shape.

The operation of the gas-filled liquid filling valve will be described.
When the container 13 is transported directly under the filling valve 21, a container holder (not shown) grips and lifts it up, and the upper end surface of the container port is brought into contact with a seal member 32 provided on the lower surface of the filling valve 21, so that the container The inside of 13 is made into the sealed state which interrupted | blocked with external air. The spreader 34 is inserted into the container 13. The counter gas passage 35 is opened by a not-shown opening / closing valve and simultaneously the exhaust gas passage 31 is opened by a not-shown gassing valve, and a high-pressure counter gas is guided through the counter gas passage 35 from the gas layer of a liquid storage tank (not shown). The air in the container 13 is discharged to the outside through the exhaust gas passage 31 and a gassing chamber (not shown) to replace the air in the container 13 with the counter gas, and then the exhaust gas passage 31 is closed and the pressure in the container 13 is changed to the counter gas pressure. Equilibrate.

Next, the liquid valve 28 is opened to drop and fill the liquid by its own weight. The liquid discharged from the nozzle 25 at the lower end falls in a cylindrical shape along the spreader 34 and spreads outward at the conical surface portion at the lower end of the spreader 34. Then, it hits the inner surface of the container 13, travels along this, drops to the bottom and accumulates. The gas confined therein is returned to the gas reservoir of the liquid storage tank through a counter gas passage 35 running in the center of the spreader 34. When a predetermined amount of liquid is filled, the liquid valve 28 is closed, a snift valve (not shown) is opened, and the gas remaining in the upper portion of the container 13 is discharged to the outside air through the exhaust gas passage 31 to return to the atmospheric pressure, and the container 13 is lowered. To the next process.
In the figure, solid arrows and broken arrows indicate the directions of flow of liquid and air, respectively.

Filling the gas-filled liquid is performed with the container sealed, and a gas passage is required to replace the gas in the container, return the gas during filling, and release the gas pressure after filling. In order to obtain the time required to release the pressure, it is necessary to increase the filling flow rate while suppressing foaming, and a spreader has been used, but recently, a nozzle similar to non-gas liquid filling is used, and the gas passage is A filling valve having a configuration around the nozzle has been proposed. (Hereinafter, this filling device is referred to as a spreaderless filling valve) (see FIG. 2 of Patent Document 1)
JP 2004-217246 A

In the conventional filling valve 1 (FIG. 8), filling valve 21 (FIG. 9), or spreaderless filling valve, the liquid valve 8 for opening and closing the liquid passage 4 (which will be described below for the filling valve 1) is a valve. Since the bottom of the body 3a is formed by a convex conical surface-shaped seal portion 3b that narrows and a concave conical surface-shaped valve seat 2a that is provided on the valve body 2, the liquid filling is completed. When the liquid valve 8 is closed, the valve body 3a is lowered, and the liquid remaining in the liquid passage 4 below the valve body 3a is pushed downward, so that the flow rate of the liquid is increased and the flow is disturbed. There is a first problem in that the container mouth is scattered and the container liquid is struck and bubbles are generated by hitting the filling liquid surface. Patent Document 2 discloses a filling valve in which a liquid valve is disposed above a valve body, and the valve body is raised to close the liquid valve. However, no specific explanation is disclosed regarding the flow of the liquid in the liquid passage.
Japanese Patent Publication No. 7-102841

In addition, the non-gas liquid filling valve 1 or the gas-filled liquid spreaderless filling valve has a large free fall distance of liquid at the initial stage of filling, and particularly has a shape in which the bottom of the container rises in a mountain shape. Depending on the type of the liquid and the container 13, the liquid that has left the nozzle 5 and freely dropped and collided with the bottom of the container entrains the surrounding air to form bubbles, and the bubbles progress to fill and rise. In addition to the problem of hygiene due to dirty mouth, there is a second problem of blocking the counter gas passage.
The object of the present invention is to provide a filling valve that solves these two problems.

With respect to the above problems, the present invention aims to solve the problems by the following means.
(1) A vertically long valve rod having a valve body at the bottom is mounted in a vertically long hole provided at the center of the valve body of the filling valve used in the liquid filling apparatus, and is vertically movable. A liquid passage is formed by the inner surface and the outer peripheral surface of the valve stem, and a convex weight surface-shaped seal portion narrowed on the upper side provided in the upper portion of the valve body, and a concave portion narrowed on the upper side provided in the vertically long hole of the valve body. In a filling valve that forms a liquid valve that closes when the valve stem ascends and opens when the valve stem descends by a valve seat in the form of a conical surface, the lower end of the nozzle of the liquid discharge port provided at the lower end of the liquid passage is The filling valve has an elliptical shape with an angle of α ° with respect to the tip and a pointed periphery placed on a horizontal surface and a sharp shape.
(2) The filling valve according to (1) above, wherein α = 10 ° to 15 °.

(3) A vertically long valve rod having a valve body at the bottom is mounted in a vertically long hole provided at the center of the valve body of the filling valve used in the liquid filling apparatus, and is vertically movable. A liquid passage is formed by the inner surface and the outer peripheral surface of the valve stem, and a convex weight surface-shaped seal portion narrowed on the upper side provided in the upper portion of the valve body, and a concave portion narrowed on the upper side provided in the vertically long hole of the valve body. The center of the circular section of the nozzle of the liquid discharge port provided at the lower end of the liquid passage in a filling valve that forms a liquid valve that closes when the valve stem is raised and opens when the valve stem is lowered by a valve seat in the form of a conical surface A filling valve with an oval shape in which the line is inclined from the middle by an angle β with respect to the vertical line, and the peripheral edge of the tip is placed on a horizontal surface and sharpened.

(4) A vertically long hole provided in the center of the valve body of the filling valve used in the liquid filling apparatus is vertically mounted with a valve rod having a valve body in the lower part, and the valve body has a vertically long hole. A liquid passage is formed by the inner surface and the outer peripheral surface of the valve stem, and a convex weight surface-shaped seal portion narrowed on the upper side provided in the upper portion of the valve body, and a concave portion narrowed on the upper side provided in the vertically long hole of the valve body. The center of the circular section of the nozzle of the liquid discharge port provided at the lower end of the liquid passage in a filling valve that forms a liquid valve that closes when the valve stem is raised and opens when the valve stem is lowered by a valve seat in the form of a conical surface A filling valve in which a line is inclined from the middle by an angle β with respect to a vertical line, and the tip of the lower end is circular and pointed on a plane perpendicular to the inclined center line.
(5) The filling valve described in (3) and (4) above, wherein β = 10 ° to 11 °.

In the first and second aspects of the invention, when the liquid filling is completed and the liquid valve is closed, the valve body moves upward, so that the liquid on the upper side of the valve body is pushed upward, and the liquid on the lower side of the valve body. The volume of the passage is increased, the flow rate of the liquid discharged from the nozzle is reduced, and the conventional problems do not occur, and the liquid remaining in the vicinity of the nozzle when the liquid valve is closed after filling is closed This makes it easy to collect and fall below the inclined lower end surface of the nozzle, and there is no liquid remaining on the nozzle in an unstable state, so that the problems seen in the past do not occur.
In the invention according to claims 3, 4 and 5, during the filling, the direction of the liquid flow is bent in a direction inclined at an appropriate angle from the vertical direction at the nozzle portion, and the liquid leaving the nozzle falls in a parabolic manner, Collides with the bottom of the container at a position away from the center of the container, or collides with the inner wall of the container near the bottom at an acute angle and then falls along the inner wall to reach the bottom, or the inner wall of the neck of the container It can travel along the curved surface of the container and reach the bottom while expanding the width, and in both cases, generation of bubbles can be suppressed.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS.
1 is a longitudinal sectional view of a filling valve 41 in which the present invention is applied to a non-gas liquid filling device, FIG. 2 is an enlarged view of the filling nozzle portion of FIG. 1, and FIG. 3 is a filling valve 51 applied to a gas-filled liquid filling device. FIG. 4 is an enlarged view of the filling nozzle portion of FIG. Hereinafter, differences from FIG. 8 will be described.

A configuration in the case of non-gas liquid filling will be described. In FIG. 1, 41 is a filling valve, 42 is its valve body, 43 is a valve rod, 43a is a valve body formed at the lower part of the valve rod 43, and 44 is provided at the center of the valve body 42. This is a cylindrical liquid passage formed between the inner peripheral surface of the vertically long hole and the outer peripheral surface of the valve rod 43. The valve main body 42 is formed by an upper main body 42a, a lower main body 42b, and a funnel portion 42c. The upper portion of the upper main body 42a includes a liquid supply port 47 connected to a liquid supply pipe, and the lower portion has a larger diameter and a valve chamber. , The liquid passage 44 is narrowed down to a cylindrical passage having a small diameter by a funnel portion 42c that narrows downward. The lower main body 42b holds the funnel portion 42c and holds the nozzle 49 and the filter 6 as necessary.

The valve body 43a is provided with a convex cone-shaped seal portion 43b that narrows upward at the top, and a liquid valve 48 is formed with a concave cone-shaped valve seat 42d that is provided inside the lower portion of the upper body 42a and narrows upward. is doing. The upper end of the valve rod 43 passes through the diaphragm 9 and is coupled therewith, further through the upper wall 42e of the upper body 42a, and is connected to the air cylinder 10 through a joint. Reference numeral 11 denotes a bracket for attaching the filling valve 41 to the rotating disk of the filling apparatus, and 12 denotes a container holder that holds the container 13 and moves up and down.

In the case of filling with a non-gas liquid, when a predetermined amount of liquid is filled in the container 13, the liquid level rises to the vicinity of the inlet of the container 13, the valve rod 43 is pulled up by the air cylinder 10, and the valve body The seal portion 43b of 43a rises and comes into contact with the valve seat 42d of the upper main body 42a to close the liquid valve 48. When closing, the seal portion 43b pushes the liquid in contact with the upper side to decelerate the flow, and the volume of the liquid passage on the lower side of the valve body 43a increases, so the flow of the liquid discharged from the nozzle 49 is decelerated. However, it does not increase the speed and does not collide strongly with the liquid surface as in the prior art (nozzle 70 of Patent Document 1), or it scatters sideways and does not stain the container mouth. As shown in FIG. 2, the nozzle 49 is an ellipse whose circular shape formed by the lower end of the conventional nozzle 5 is inclined with respect to a horizontal plane by an angle α (10 ° to 15 ° is optimal according to experiments). When the liquid valve is closed after filling, the liquid remaining in the vicinity of the nozzle collects easily under the inclined lower end surface of the nozzle due to surface tension, and falls in an unstable state. The liquid remaining in the nozzle is eliminated, and the problems seen in the past do not occur.

In the case of gas-filled liquid filling, in FIGS. 3 and 4, 51 is a gas-filled liquid filling valve, 52 is a valve body, 53 is a valve rod, 53a is a valve body, 54 is a liquid passage, and 58 is a liquid valve. , 9 is a diaphragm, and 57 is a liquid supply port. The lower side of the liquid passage 54 is formed to have a valve chamber with a larger diameter, and then has a cylindrical shape with a reduced diameter, and is opened obliquely downward through a nozzle 59 formed at the lower end of the valve body 52.
The valve main body 52 is composed of a plurality of members, the upper part of the valve chamber forms a valve seat 52a with a sealing material, and the opening of the lower liquid passage 54 forms a nozzle 59. 52b and 52c are narrow semi-cylindrical gas passages formed on the outside of the nozzle 59 and facing each other. The lower ends of the gas passages open to the lower end surface of the valve body 52, and the upper side of the gas passage 52b is the counter gas passage 61. Then, the gas is connected to an air layer portion of a liquid storage tank (not shown) through a counter gas switching valve 62. The upper side of the gas passage 52c is an exhaust passage 63. The exhaust passage 63 branches into two, one is connected to the outside air through the gasing gas switching valve 64 and the gassing gas chamber 65, and the other is the sniffing gas switching valve 66 and the sniffing gas. It is connected to the outside air through the chamber 67. Reference numeral 11 denotes a bracket for holding the valve main body 52, and an exhaust passage 63 passes through the bracket.
Further, a sealing member 68 for sealing the inside and outside of the container 13 is provided on the lower end surface of the valve main body 52 so as to be in contact with the upper end of the container 13 outside the gas passages 52b and 52c.
The lower end portion of the valve stem 53 is expanded in diameter to form a valve body 53a, the upper side of the valve body 53a is formed with a convex conical surface-shaped seal portion 53b that extends downward, and the lower side is formed with a convex conical surface that narrows downward. In addition, the seal portion 53b and the valve seat 52a on the valve body 52 side form a liquid valve 58 that closes when the valve body 53a is raised and opens when it is lowered. The shape of the lower end portion of the nozzle 59 is the same as that of the nozzle 49.

The operation of the filling valve 51 having the above configuration will be described. The valve rod 53 is pulled up by the cylinder 10 to close the liquid valve 58, and the counter gas switching valve 62, the gassing gas switching valve 64, and the sniffing gas switching valve 66 are also closed. When the container 13 is carried under the filling valve 51, the container holder 12 grasps the neck of the container 13 and rises, and the upper end surface of the mouth of the container 13 is brought into contact with the lower surface of the seal member 68 at the lower end of the valve body 52. The container 13 is closed and sealed inside and outside.
Next, the counter gas switching valve 62 is opened, and high-pressure gas is blown into the container 13 through the counter gas passage 61 from the gas layer portion of the liquid storage tank (not shown). At the same time, the gassing gas switching valve 64 is opened to open the inside of the container 13. Is discharged from the exhaust passage 63 to the outside air through the gassing chamber 65, and the air in the container 13 is replaced with gas. Next, the gas passage switching valve 64 closes the exhaust passage 63 to balance the pressure in the container 13 with the pressure in the liquid storage tank.

Next, the valve rod 53 is lowered by the cylinder 10 to open the liquid valve 58. The liquid in the liquid storage tank is injected into the container 13 by its own weight through the liquid supply port 57, the liquid passage 54, and the nozzle 59.
When the filling amount of the liquid measured by a flow meter (not shown) reaches a predetermined amount, the liquid valve 58 is closed to stop filling. Next, the snift gas switching valve 66 is opened, and the gas remaining in the head space above the container 13 is discharged from the exhaust passage 63 to the outside air through the snift chamber 67 to return the pressure to atmospheric pressure, and the filling is completed. The actions and effects based on the shape of the lower end of the nozzle 59 are the same as those of the nozzle 49 described above.

In the filling valve 41 shown in FIG. 1, a replaceable nozzle 49 is shown, and in the filling valve 51 shown in FIG. 4, a nozzle 59 formed integrally with the valve body 52 is shown. Is in the shape of the lower part of the nozzle, and can be applied to other filling valves that are free-falling under their own weight.
(Second Embodiment)

The nozzle 149 shown in FIG. 5 is a cylindrical pipe whose upper part is vertical, and is inclined by an angle β from the vertical direction during an appropriate vertical length of the lower part, and the peripheral edge of the lower end is on a horizontal plane (plane The tip is oval). The tip is chamfered on the outside. According to experiments, the angle β is suitably 10 ° to 11 °, and the appropriate vertical length is not particularly limited, but a relatively short length (for example, 1 mm or more) is sufficient.
(Third embodiment)

The nozzle 249 shown in FIG. 6 is a nozzle 149 in which the peripheral edge at the lower end is placed on a plane perpendicular to the inclined center line (the cross section is circular), the peripheral edge is inclined with respect to the horizontal plane, and the tip is The outside is chamfered and sharpened. FIG. 7 shows a case where a nozzle 159 is attached instead of the nozzle 59 of FIG. The tip shape of the nozzle 159 is the same as the nozzle 249.
The inclination angle β and the length of the inclined portion along the inclination are the same as those of the nozzle 149. The nozzles 149, 249, and 159 are attached to the filling valve with the inclination direction facing outward in the radial direction of the rotating disk of the filling device.

In the second embodiment and the third embodiment, the pressure in the liquid storage tank and the container is atmospheric pressure in the case of filling with non-gas liquid, and gas pressure in the case of filling with gas-filled liquid. Since they are performed in a balanced manner, the actions of the nozzles 149, 249, and 159 are almost the same except that the distance between the nozzle and the container port is different. Therefore, the nozzle 149 will be described as an example.
The flow of the liquid exiting the nozzle 149 is bent in a direction inclined by an appropriate angle β from the vertical direction by the inclination of the lower portion of the nozzle 149, and after leaving the nozzle 149, the central portion draws a parabola to increase the speed and reduce the flow. And then collides with the bottom of the container 13 at a position away from the center of the bottom of the container 13 or collides with the inner wall of the container 13 close to the bottom at an acute angle and then falls along the inner wall and falls to the bottom. The liquid accumulates on the bottom of the container 13 by either taking the path of reaching the bottom while expanding the width by colliding with the inner wall of the neck of the container and further traveling along the curved surface of the inner wall of the container 13. Go. None of them collide with the raised portion of the bottom of the container 13, and the generation of bubbles can be suppressed. When colliding with the inner wall of the neck of the container 13, it flows along the inner wall from the upper part of the container 13, so that the state is similar to the case where a spreader is used.
In the case of the nozzles 249 and 159, the peripheral edge of the lower end is inclined with respect to the horizontal plane, so that the liquid runs out when the liquid valve is closed, the amount of liquid remaining in the nozzles 249 and 159 is reduced, and liquid dripping is prevented. There is an effect that can be prevented.

It is a longitudinal cross-sectional view of the filling valve applied to the non-gas liquid filling device according to the first embodiment of the present invention. It is an enlarged view of the filling nozzle part of FIG. It is a longitudinal cross-sectional view of the filling valve applied to the filling apparatus for gas-containing liquids. It is an enlarged view of the filling nozzle part of FIG. It is an enlarged view of the filling nozzle part of the filling valve applied to the filling device for non-gas liquid according to the second embodiment of the present invention. It is an enlarged view of the filling nozzle part of the filling valve applied to the filling device for non-gas liquid according to the third embodiment of the present invention. It is an enlarged view of the filling nozzle part of the filling valve applied to the filling apparatus for gas-filled liquid which concerns on the 3rd Embodiment of this invention. It is a longitudinal cross-sectional view of the conventional filling valve for non-gas liquids. It is a longitudinal cross-sectional view of the conventional filling valve for liquids containing gas.

Explanation of symbols

41, 51 Filling valve 42, 52 Valve body 42d, 52a Valve seat 43, 53 Valve rod 43a, 53a Valve body 43b, 53b Seal portion 44, 54 Liquid passage 48, 58 Liquid valve 249 Nozzle

Claims (5)

A vertically long hole provided in the center of the valve body of the filling valve used in the liquid filling apparatus is vertically mounted with a valve rod provided with a valve body at the lower part, and the inner surface of the vertically long hole of the valve body and the above-mentioned A liquid passage is formed with the outer peripheral surface of the valve stem, and a convex weight surface-shaped seal portion narrowed on the upper side provided in the upper portion of the valve body, and a concave weight surface shape narrowed on the upper side provided in the vertically long hole of the valve body In a filling valve that forms a liquid valve that closes when the valve stem is raised and opens when the valve stem is lowered, the lower end of the nozzle of the liquid discharge port provided at the lower end of the liquid passage with respect to a horizontal plane A filling valve characterized in that it has an elliptical shape with an angle α ° inclined and a tip peripheral edge placed on a horizontal surface and a sharp shape. 2. The filling valve according to claim 1, wherein [alpha] = 10 [deg.] To 15 [deg.]. A vertically long hole provided in the center of the valve body of the filling valve used in the liquid filling apparatus is vertically mounted with a valve rod provided with a valve body at the lower part, and the inner surface of the vertically long hole of the valve body and the above-mentioned A liquid passage is formed with the outer peripheral surface of the valve stem, and a convex weight surface-shaped seal portion narrowed on the upper side provided in the upper portion of the valve body, and a concave weight surface shape narrowed on the upper side provided in the vertically long hole of the valve body In a filling valve that forms a liquid valve that closes when the valve stem is raised and opens when the valve stem is lowered, the center line of the circular section of the nozzle of the liquid discharge port provided at the lower end of the liquid passage is halfway The filling valve is characterized in that it is inclined with respect to the vertical line by an angle β, and has an elliptical shape with a tip peripheral edge placed on a horizontal surface and a sharp shape.   A vertically long hole provided in the center of the valve body of the filling valve used in the liquid filling apparatus is vertically mounted with a valve rod provided with a valve body at the lower part, and the inner surface of the vertically long hole of the valve body and the above-mentioned A liquid passage is formed with the outer peripheral surface of the valve stem, and a convex weight surface-shaped seal portion narrowed on the upper side provided in the upper portion of the valve body, and a concave weight surface shape narrowed on the upper side provided in the vertically long hole of the valve body In a filling valve that forms a liquid valve that closes when the valve stem is raised and opens when the valve stem is lowered, the center line of the circular section of the nozzle of the liquid discharge port provided at the lower end of the liquid passage is halfway The filling valve is characterized in that it is inclined with respect to a vertical line by an angle β, and the tip of the lower end is circular and pointed on a plane perpendicular to the inclined center line.   5. The filling valve according to claim 3, wherein [beta] = 10 [deg.] To 11 [deg.].

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