JPH0958615A - Liquid form article filling nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filling nozzle which can be adapted to various kinds of liquid form articles, or various filling amounts, within a range of a suitable flow velocity. SOLUTION: A liquid form article filling nozzle is equipped with a a filling cylinder 21 with an opening 21a at the lower end, a valve rod 24 which vertically moves in the filling cylinder 21, and a valve main body 25 with a conical tilted wall surface 25a, which is connected to the leading end of the valve rod 24. Then, when the valve main body 25 protrudes from the opening 21a, a liquid form article in the filling cylinder 21 streams down from the opening 21a. Then, a core 26 which partitions a specified gap to the internal wall of the filling cylinder 21 is detachably provided on the outer periphery at the leading end of the valve rod 24. The core 26 is equipped with a partitioning claw 26a which partitions the gap to the internal wall surface of the filling cylinder 21 in the longitudinal direction, on the outer periphery.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid material filling nozzle used in a filling device for filling juices, milk and other liquid materials in bags and other containers.

[0002]

2. Description of the Related Art Japanese Patent Application No. 7-25 previously filed by the applicant
No. 981 describes a liquid material filling device suitable for quantitatively filling a liquid material having a relatively low viscosity from normal temperature to high temperature. As shown in FIG. 11, this liquid material filling device has a storage tank 1 containing a liquid material A and a plunger piston 3 built in a metering cylinder 2 to store the liquid material A from the storage tank 1.
A metering device 4 for sucking and then discharging, a filling nozzle 5A for filling the liquid B discharged from the metering cylinder 2 into a bag B, a suction port 6a communicating with the storage tank 1, and a suction communicating with the metering cylinder 2. The discharge port 6b and the discharge port 6c communicating with the filling nozzle 5A, and the three-way switching valve 6 and the like for connecting the suction / discharge port 6b to the suction port 6a or the discharge port 6c alternately.

Explaining the filling operation of the liquid material filling apparatus, first, the valve 8 is horizontally moved by the switching fluid pressure cylinder 7 so that the suction port 6a and the suction / discharge port 6b communicate with each other, and at the same time, the plunger piston 3 is lowered. Then, a fixed amount of the liquid substance A is taken into the fixed amount cylinder 2 from the storage tank 1 through the suction hose 9 and the three-way switching valve 6. Next, when the bag B is prepared below the filling nozzle 5A, the valve 8 of the filling nozzle 5A is opened by moving the valve 8 horizontally by the switching fluid pressure cylinder 7 to make the suction / discharge port 6b and the discharge port 6c communicate with each other. Simultaneously with opening, the plunger piston 3 is raised to fill the liquid material A in the metering cylinder 2 into the bag B through the three-way switching valve 6, the discharge hose 10 and the filling nozzle 5A. Then, the plunger piston 3 moves up to a predetermined position and the filling is completed, and at the same time, the valve of the filling nozzle 5A is closed.

As the filling nozzle 5A of the liquid filling device, the one shown in FIGS. 9 and 10 is preferably used. The filling nozzle 5A includes a filling cylinder 11 having an opening 11a at a lower end thereof, an elevating cylinder 12 installed at an upper portion of the filling cylinder 11, a valve rod 14 connected to the elevating cylinder 12 through a plug joint 13, and a valve. It comprises a valve body 16 and the like attached to the lower end of the rod 14 by bolts 15. The valve body 16 is provided with a conical inclined wall surface 16a, and partition claws 16b (three in this example) that are in sliding contact with the inner wall of the filling cylinder 11 are provided on the outer periphery of the inclined wall surface 16a. In addition, 11b is a liquid substance introduction part communicating with the discharge port 6c, 17
Is a bush that slidably supports the valve rod 14 and prevents the liquid material in the filling cylinder 11 from leaking upward.

In this filling nozzle 5A, the lifting cylinder 1
By driving 2, the valve rod 14 moves up and down, and the valve body 16
Moves between the solid line (the position that closes the opening 11a) and the phantom line (the position that opens the opening 11a) in FIG. Valve body 1
When 6 is an imaginary line position, the liquid substance in the filling cylinder 11 flows down from the opening 11a along the inclined wall surface 16a. At this time, since the partitioning claw 16b in the vertical direction exists so as to partition the opening 11a of the filling cylinder 11, the liquid material flowing down is divided into three in the circumferential direction when viewed in a horizontal section. As described above, in the filling nozzle 5A, the partition claw 16b that divides the flowing liquid material is provided so that the air wrapped inside the flowing liquid material is released to the outside through the gap (actual opening). (See Japanese Laid-Open Patent Publication No. 59-38204).

[0006]

By the way, when filling a bag or a container with a liquid, if the flow rate of the liquid flowing from the filling nozzle is too fast, the liquid will be scattered from the nozzle opening or splash inside the bag. If it scatters outside the bag, it causes insufficient filling amount, and if it contaminates the sealing surface of the bag, it causes poor sealing. On the other hand, if the flow velocity is too slow, the liquid substance does not flow down uniformly from the opening, and the air flows backward and enters the filling cylinder, which causes variations in the filling amount. As described above, there is a suitable range for the flow velocity of the liquid substance flowing down from the filling nozzle. The value depends on the properties of the liquid, and generally, the lower the viscosity, the more scattering and foaming at a low flow rate.

In order to increase the filling amount of the liquid material into the bag at one time while keeping the flow rate of the liquid material within a suitable range, it is necessary to increase the diameter of the filling nozzle or lengthen the filling time. However, if the filling time is lengthened, the capacity (the number of products) of the apparatus is reduced, so that the one with a large filling nozzle diameter is usually used. On the contrary, in order to reduce the amount of filling at one time while keeping the flow rate of the liquid material in a suitable range, it is necessary to reduce the diameter of the filling nozzle or shorten the filling time. If the length is shortened, the variation of the filling amount becomes large, so that a filling nozzle with a small diameter is usually used. On the other hand, if the type of liquid material is different, the preferable range of the flow rate is also different, and in this case as well, in order to obtain the required filling amount, it is necessary to use filling nozzles having different diameters corresponding to the flow rate.

As described above, the filling nozzle is exchanged with one having a different diameter depending on the filling amount and the type of the filling material. However, in the conventional filling device, the entire filling nozzle is replaced, so that the replacement is time-consuming. In addition, since the types of liquids have increased in recent years and the filling amount has diversified,
Since it is necessary to prepare a large number of filling nozzles of various diameters, there is a problem that the equipment cost is high.

Further, in the case of a liquid substance containing solid matter (eg soup with egg) and a liquid substance containing fibrous matter (eg sliced onion), when a filling nozzle equipped with a partitioning nail is used, the partitioning nail is used. Since solids and fibrous materials are caught on the surface and the variation in the filling amount becomes large, or the filling process may be interrupted in some cases, a filling nozzle without partitioning claws is used. As for this type of filling nozzle, it is necessary to prepare a large number of nozzles having different diameters, which is also a factor of increasing the equipment cost.

The present invention has been made in view of the above-mentioned problems of the prior art, and can be realized without preparing many filling nozzles.
Moreover, it is an object of the present invention to easily obtain a liquid material filling nozzle capable of handling various liquid materials and diversified filling amounts within a range of suitable flow velocity.

[0011]

According to the present invention, there is provided a filling cylinder having an opening at its lower end, and a valve rod for moving up and down in the filling cylinder.
The valve body is provided at the tip of the valve rod and has a conical inclined wall surface. When the valve body projects from the opening, the liquid substance in the filling cylinder flows down from the opening. In the liquid material filling nozzle, a core that defines a predetermined gap with the inner wall of the filling cylinder is detachably provided on the outer circumference of the tip end portion of the valve rod. The core of the liquid material filling nozzle preferably includes one or a plurality of vertical partitioning claws that partition a gap between the liquid material filling nozzle and the inner wall surface of the filling cylinder.

The present invention also includes a filling cylinder having an opening at the lower end, a valve rod that moves up and down in the filling cylinder, and a valve body provided at the tip of the valve rod and having a conical inclined wall surface. However, in the liquid material filling nozzle in which the liquid material in the filling cylinder flows down from the opening portion when the valve body projects from the opening portion, the valve body is provided on the small diameter portion of the conical inclined wall surface. Then, it has a cylindrical portion that defines a predetermined gap with the inner wall of the filling cylinder, and is detachably connected to the tip of the valve rod. The valve body of the liquid material filling nozzle preferably includes a vertical partitioning claw for partitioning a gap between the liquid material filling nozzle and the inner wall surface of the filling cylinder.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described more specifically with reference to FIGS. The filling nozzle 5 shown in FIGS. 1 to 4 includes a filling cylinder 21 having a conical opening 21a at a lower end thereof, an elevating cylinder 22 installed at an upper portion of the filling cylinder 21, and an elevating cylinder 22 through a plug joint 23. The valve rod 24 is connected to the valve rod 24, the valve body 25 is provided at the lower end of the valve rod 24, and the core 26 is attached to the lower end of the valve rod 24.

The valve rod 24 is composed of a first rod 24a connected to the insertion joint 23 and a second rod 24b detachably connected to the tip of the first rod 24a, and the valve body is provided at the lower end of the second rod 24b. 25 are integrally provided. The valve body 25 is provided with a conical inclined wall surface 25a, and its lower end abuts the opening 21a of the filling cylinder 21 to close the opening 21a. In addition, in the case of a liquid substance containing a solid substance, the solid substance may be sandwiched between the abutting portions. Therefore, as in the example of FIG.
A structure in which 5e is in sliding contact with the inner wall surface of the filling cylinder 21 is preferable.

The core 26 comprises a cylindrical main body 26a and partition claws 26b (three in this example) integrally provided on the outer periphery of the main body 26a. The inside of the upper end of the main body 26a is threaded, screwed into the second rod 24b, and fixed by the lock nut 27. The inside of the lower end of the body 26a is the valve body 2
5 is an inclined surface along the inclined wall surface 25a, and contacts the inclined wall surface 25a in the mounted state shown in FIG.
Also in 6b, the inside of the lower end portion is an inclined surface along the inclined wall surface 25a of the valve body 25, and in contact with the inclined wall surface 25a in the mounted state shown in FIG. Also,
The partition claw 26b vertically partitions the gap between the main body 26a and the inner wall surface of the filling cylinder 21, and the outer periphery of the partition claw 26b is in sliding contact with the inner wall of the filling cylinder 21.

Numeral 21b is a liquid substance introducing portion, and numeral 28 is a first
Inside the filling cylinder 2 while supporting the rod 24a slidably
Bush for preventing liquid of No. 1 from leaking upward, 29
Is a clamp for fixing the filling cylinder 21 and the casing 30.

In this filling nozzle 5, the lifting cylinder 22
The valve rod 24 moves up and down by driving the valve body 25, and the valve body 25 moves between the position of FIG. 1 (the position that closes the opening 21a) and the protruding position of FIG. 2 (the position that opens the opening 21a). When the valve body 25 is projected to the position shown in FIG. 2, the liquid substance in the filling cylinder 21 flows down from the opening 21a along the inclined wall surface 25a. At this time, since the partitioning claw 26b exists so as to partition the opening 21a of the filling cylinder 21 in the radial direction, the liquid material flowing down is vertically divided into three parts. The action of the filling nozzle 5 is the same as that of the conventional filling nozzle 5A shown in FIG.

In the filling nozzle 5, the core 26 is detachable from the valve rod 24. When replacing the core 26 with another core, the clamp 29 is opened, the first rod 24a is removed from the insertion joint 23, this is pulled out downward from the filling cylinder 21, and the second rod 24a is removed from the first rod 24b. Remove the lock nut 27 and insert the core 26
Is removed from the second rod. When assembling a new core, follow the reverse order.

In this filling nozzle 5, if the flow velocity is constant, the amount of liquid flowing down is the inner diameter φD (constant) of the filling cylinder 21 and the outer diameter φd (selectable) of the body 26a of the core 26, that is, the middle. It is determined by the size of the gap between the child 26 and the inner wall of the filling cylinder 21. Therefore, for example, when it is necessary to increase the filling amount at one time while keeping the flow rate of the liquid material in a suitable range, the filling cylinder 2 is replaced with the core 26 having a small φd.
It is advisable to increase the distribution area of the liquid substance in 1. On the contrary, when it is necessary to reduce the filling amount once, the core 26 with a larger φd is used.

When the type of liquid material changes and it is necessary to increase the flow velocity, the core 26 having a larger φd is used for the same filling amount. On the contrary, when it is necessary to reduce the flow velocity, the core 26 having a smaller φd is replaced if the filling amount is the same. In addition, when filling liquids containing solids or fibers such as eggs and sliced onions,
Core 27 without partition claw 26b having an appropriate outer diameter φd
(See FIG. 5).

The filling nozzle 30 shown in FIGS. 6 to 8 has a valve body 35 detachably connected to the tip of a valve rod 34 in place of the valve body 25 and the core 26 of the filling nozzle 5. The valve body 35 includes an inclined wall surface 35a, a cylindrical portion 35b following the small diameter portion thereof, an inclined wall surface 35a and a cylindrical portion 35.
The outer peripheral surface of b is provided with a vertical partitioning claw 35c for partitioning a gap with the inner wall surface of the filling cylinder 21. Further, the valve body 35 has a through hole 35d for connecting to the valve rod 34 at the center thereof, and is detachably attached to the valve rod 34 by the bolt 15. A cylindrical portion 35e is formed following the large diameter portion of the inclined wall surface 35a of the valve body 35, and the cylindrical portion 35e is slidably contacted with the inner circumference of the filling cylinder 21 to close the opening of the filling cylinder 21. The partition claw 35c also slides on the inner wall surface of the filling cylinder 21.

The operation of the filling nozzle 30 is the same as that of the filling nozzle 5, and the valve rod 24 is moved up and down by driving an elevating cylinder (not shown), and the valve body 35 is moved to the position shown by the solid line in FIG. 6 (the opening of the filling cylinder 21). (The position where the filling cylinder 21 is closed) and the virtual line position (the position where the opening of the filling cylinder 21 is opened). When the valve body 35 is projected to the position of the imaginary line, the filling cylinder 2
The liquid substance in 1 flows down from the opening along the inclined wall surface 35a. At this time, since the partitioning claw 35c exists so as to partition the opening of the filling cylinder 21 in the radial direction, the liquid material flowing down is vertically divided into three parts.

Also in this filling nozzle 30, if the flow velocity is constant, the flow rate of the liquid material is the inner diameter φD (constant) of the filling cylinder 21 and the outer diameter φd (selectable) of the cylindrical portion 35b of the valve body 35, that is, the cylinder. It is determined by the size of the gap between the portion 35b and the inner wall of the filling cylinder 21. Therefore, when it is necessary to change the filling amount for one time while keeping the flow rate of the liquid substance in a suitable range, the bolt 15 is removed and replaced with a valve body having a different outer diameter φd of the cylindrical portion 35b. It is advisable to change the distribution area of the liquid material.

Also in this case, when filling a solid or liquid containing fibrous material, the valve main body 36 (see FIG. 8) having an appropriate outer diameter φd and having no partition claw 30c may be replaced.

[0025]

According to the filling nozzle of the present invention, the core 26 having a different outer diameter φd of the main body portion 26a or the valve main body 35 having a different outer diameter φd of the cylindrical portion 35b, including those without partition claws, is provided. If a large number are prepared, it is possible to deal with various liquid substances and diversified filling amounts within a suitable flow rate range simply by exchanging them. For example, in the conventional filling nozzle, in order to correspond to the filling amount of 50 to 3000 cc,
Standard for 100cc, 250cc, 500cc,
It was necessary to prepare five types for 1000 cc and 2000 cc and replace the entire filling nozzle, but in the present invention, only the core 26 or the valve body 35 needs to be replaced, and a more detailed response depending on the filling amount is possible. is there. Also, the core 26
Alternatively, the present invention can be applied to a solid matter or a liquid matter containing fibrous material only by replacing the valve body 35.

Further, in the filling nozzle of the present invention, the core 2
Since 6 is detachable from the valve rod and the valve body as a separate body, it can be made of a material different from these, and if, for example, Teflon (registered trademark), ceramic, titanium or the like is used, This is effective in preventing seizure of the partition claws that are in sliding contact with the inner surface of the filling cylinder. Also in the case of the valve body 35, the same effect can be obtained because it is detachable from the valve rod as a separate body.

[Brief description of drawings]

FIG. 1 is a sectional view of a filling nozzle according to the present invention.

FIG. 2 is a sectional view of relevant parts showing a state where the valve body also projects from the opening of the filling cylinder.

3 is a cross-sectional view taken along the line I-I of FIG.

4 is a perspective view of the core of FIG. 1. FIG.

FIG. 5 is a perspective view showing another example of a core according to the present invention.

FIG. 6 is a cross-sectional view of the main parts of another example of the filling nozzle according to the present invention.

7 is a perspective view of the valve body of FIG.

FIG. 8 is a perspective view showing another example of the valve body according to the present invention.

FIG. 9 is a sectional view of a conventional filling nozzle.

10 is a cross-sectional view taken along the line II-II of FIG.

FIG. 11 is an overall configuration diagram of a conventional liquid material filling device.

[Explanation of symbols]

 5, 30 Filling nozzle 21 Filling cylinder 22 Lifting cylinder 23 Plug-in joint 24 Valve rod 25, 35, 36 Valve body 26, 27 Core 26a Core body 26b Partition claw 35a Valve body inclined wall surface 36b Valve body cylindrical portion 36c Partition nail

Claims (4)

[Claims] 1. A valve having a filling cylinder having an opening at a lower end thereof, a valve rod that moves up and down in the filling cylinder, and a valve body provided at a tip of the valve rod and having a conical inclined wall surface. In the liquid material filling nozzle, wherein the liquid substance in the filling cylinder flows down from the opening when the main body projects from the opening portion, in the outer periphery of the tip end portion of the valve rod between the inner wall of the filling cylinder. A liquid material filling nozzle, wherein a core that defines a predetermined gap is detachably provided. 2. The liquid material filling nozzle according to claim 1, wherein the core is provided with vertical partitioning claws for partitioning a gap between the core and the inner wall surface of the filling cylinder. 3. A valve having a filling cylinder having an opening at a lower end thereof, a valve rod that moves up and down in the filling cylinder, and a valve body provided at a tip of the valve rod and having a conical inclined wall surface. In a liquid material filling nozzle in which a liquid material in a filling cylinder flows down from the opening when the main body projects from the opening, the valve main body follows the small diameter portion of the conical inclined wall surface to fill the liquid. A liquid material filling nozzle having a cylindrical portion that defines a predetermined gap with an inner wall of the cylinder, and being detachably connected to the tip of the valve rod. 4. The liquid material filling nozzle according to claim 3, wherein the valve body is provided with vertical partitioning claws for partitioning a gap between the valve body and the inner wall surface of the filling cylinder.