JP5677660B1 - Nozzle and fluid discharge device - Google Patents

Abstract

The present invention provides a nozzle that can detect when a section or the whole is mixed in a fluid, or prevents the tearing when the nozzle is opened, and a fluid discharge device including the nozzle. A nozzle includes a cylindrical body, and a plurality of petal-shaped valve bodies that are arranged at the tip of the cylindrical body and are configured to open and close according to the internal pressure of the cylindrical body. Prepare. The valve body 12 has a rhombus shape in a side view, and is connected at adjacent vertices, and is folded at a diagonal line in the longitudinal direction of the cylindrical body 11. The four valve bodies 12 are closed when the end face 122 corresponding to the side on the tip end side of the rhomboid half body 121 of the valve body 12 comes into contact with the end face 122 of the adjacent valve body 12. The cylinder 11 and the valve body 12 contain 5% by mass or more and 70% by mass or less of nonmagnetic metal. [Selection] Figure 1

Description

  The present invention relates to a fluid discharge device used when refilling various fluids from a large container such as a drum can and a tank into another container, and a nozzle used for the fluid discharge device.

Conventionally, foods such as seasonings, sauces, fragrances, detergents, paints, shampoos, rinses, etc., housed in large containers such as drums and tanks using filling devices equipped with piston-type and rotary-type capacity pumps Liquids such as chemical products such as cosmetics and pharmaceuticals are refilled into containers such as bottles, cups and cases.
When filling a container with a fluid using this capacity type pump, it is necessary to wash | clean a pump carefully whenever the content of the handling object changes. In addition, when the liquid level of the fluid filled in a large container such as a tank changes over time and the pressure fluctuates, the weight of the fluid flowing through the pump changes, and the filling of each container There was a problem that an error occurred in the amount. Further, when a rotary type pump is used, there is also a problem that the flowed material is kneaded when passing through the pump and changes in physical properties.

A tube pump is also used for filling. The tube pump is formed by attaching a rotary head having a plurality of rollers to a rotary shaft extending from a motor, and arranging a tube made of an elastic material on the rotation trajectory of the rotary head. The tube pump is configured to cause the fluid to flow through the tube while intermittently squeezing the tube with each roller by rotating the rotary head at a constant speed according to the drive of the motor, and to fill the container with the fluid.
This filling device equipped with a tube pump can be easily cleaned by passing a cleaning liquid through the tube, and depending on the content of the fluid, the tube may not be reused, and different fluids can be obtained by replacing the tube. The filling operation can be continued.

In these filling apparatuses, it is required to fill each container with a fixed amount of fluid efficiently (in a short time) and accurately (stablely).
However, in any of the filling devices including the pump, there is a problem that the fluid leaks from the end portion on the refill side. When dripping occurs, the filling operation is stopped and a complicated wiping operation is performed to adjust the filling, resulting in a problem that the production efficiency is lowered.

  Therefore, the inventor is formed of a flexible material on the distal end side of the tube, and is configured to be equally distributed at the distal end portion of the cylindrical body and the cylindrical body, and is configured to open and close according to the internal pressure of the cylindrical body. A nozzle having a plurality of petal-like valve bodies, a means for reversely rotating the motor and sucking back the inside of the tube, and a means for adjusting the reverse rotation speed or reverse rotation time of the motor or both A tube-type filling device was developed (Patent Document 1).

  In this tube-type filling device, when a fluid is filled in a container, a predetermined internal pressure is applied to the tube by pumping the fluid into the tube according to the driving of the pump, whereby the valve body of the nozzle And the fluid can be satisfactorily filled into the container from the opened portion. When the container is filled with a predetermined amount of fluid and the filling operation is terminated, the pump is stopped and the pump motor is reversely rotated to suck back the tube and generate negative pressure. The fluid inside is sucked in the direction opposite to the filling direction, and the valve body of the nozzle is closed. Therefore, dripping of the fluid on the tip side of the tube is prevented. And by adjusting the reverse rotation speed or the reverse rotation time of the motor, it is possible to prevent dripping of various fluids having different viscosities and the like.

Japanese Patent No. 2813599

  In the tube-type filling device of Patent Document 1 described above, a force acts so that a portion (boundary portion) where the valve bodies of the nozzle are connected to each other at the time of filling is opened to the left and right. Since it is formed of a soft material, there is a problem in that cleavage is likely to occur, and the resulting section may be mixed into the fluid. And there also existed a possibility that the nozzle itself might fall in a fluid.

  The present invention has been made in view of such circumstances, a nozzle that can be detected when a section or itself is mixed in a fluid, or a nozzle that prevents tearing when the nozzle is opened, and It aims at providing the fluid discharge apparatus provided with this nozzle.

The nozzle according to the present invention includes a cylindrical body and at least four or more rhomboid valve bodies that are equally distributed at the tip of the cylindrical body and configured to open and close according to the internal pressure of the cylindrical body. The valve bodies are connected at adjacent vertices, and each valve body is valley-folded along a diagonal line in the longitudinal direction of the cylindrical body so that the portions corresponding to the sides on the distal end side of the adjacent valve bodies are in contact with each other. , Each valve body is configured to be closed, and a portion where two adjacent valve bodies are connected has a U-shape, the inside of the U-shape is opposed to the central axis of the cylindrical body, and the inside is A rib is provided so as to be spaced from a tip portion of a portion where the valve body abuts. The cylinder body and the valve body include 95 mass% to 30 mass% of elastomer and 5 mass% to 70 mass% of stainless steel. %, And the Hs hardness is less than 45 degrees .

In the present invention, the boundary portion is reinforced, and even when the valve body is about to be cut, the progress is stopped by the rib, and the occurrence of the cleavage is well suppressed.
And since stainless steel is included in this invention, when the section | slice or the whole of a nozzle mixes in a fluid by using a metal detector, this can be detected reliably. And, stainless steel is hard to rust beauty.
In the present invention, the restoring force is good, the adhesiveness when the adjacent valve bodies are closed is good, and long-term use that can withstand repeated valve bodies is possible.

  A fluid discharge device according to the present invention includes the nozzle described above, and is configured to stop discharge / discharge of a fluid flowing through the cylindrical body by opening / closing the valve body. And

  In the present invention, dripping of the fluid is satisfactorily prevented, and when the section or the whole of the nozzle is mixed in the fluid, it is reliably detected.

  A fluid discharge device according to the present invention includes a pump having a motor capable of rotating in the forward and reverse directions, and a tube having one end connected to the pump and the other end connected to the nozzle, and reverses the motor. It is configured to rotate and suck back the fluid flowing through the tube and the nozzle.

  In the present invention, dripping is prevented better.

  According to the nozzle of the present invention, it is possible to detect when the slice or the whole is mixed in the fluid, or to prevent the tearing.

It is a perspective view which shows the nozzle which concerns on Embodiment 1 of this invention. It is a top view which shows the state to which the internal pressure was provided to the cylinder and the valve body opened. It is a front view which shows the tube type filling apparatus which concerns on Embodiment 1 of this invention. It is a perspective view which shows the nozzle which concerns on Embodiment 2 of this invention.

Hereinafter, the present invention will be specifically described based on the embodiments.
Embodiment 1 FIG.
FIG. 1 is a perspective view showing a nozzle 1 according to Embodiment 1 of the present invention.
The nozzle 1 includes a cylindrical body 11, four valve bodies 12 that are equally arranged at the tip of the cylindrical body 11, and a mounting flange 13 that is provided at the other end of the cylindrical body 11.
Each valve body 12 has a rhombus shape in a side view, is connected at adjacent vertices, and is folded at a diagonal line in the longitudinal direction of the cylindrical body 11. The four valve bodies 12 are configured to be closed when the end face 122 corresponding to the side of the front end side of the rhomboid half body 121 of the valve body 12 comes into contact with the end face 122 of the adjacent valve body 12. The valve body 12 opens when a predetermined internal pressure is applied to the cylinder body 11 and closes when the fluid body flowing through the cylinder body 11 is sucked back and sucked in the reverse direction. As shown in FIG. 1, each valve body 12 of the nozzle 1 is closed so that the end face 122 forms a cross shape.
FIG. 2 is a plan view showing a state in which the internal pressure is applied to the cylindrical body 11 and the valve body 12 is opened.
The mounting flange 13 has a ring shape with a larger diameter than the cylindrical body 11. And it is comprised so that the attachment flange 13 side of the cylinder 11 may be fitted by the fluid through which the fluid flows, such as a tube.

  The base material of the nozzle 1 is made of synthetic rubber such as silicone rubber, urethane rubber, chloroprene rubber or acrylic rubber, and elastomer containing natural rubber or synthetic resin. As the base material, silicone rubber is preferable from the viewpoint of having good flexibility and thermal stability.

The nozzle 1 contains 5 mass% or more and 70 mass% or less of nonmagnetic metals with respect to the whole mass. When the nonmagnetic metal is contained in an amount of 5 to 70% by mass or more, when the segment of the nozzle 1 or the nozzle 1 itself is mixed in the fluid, it can be easily detected by a metal detector and the wear resistance of the nozzle 1 In addition, the moldability can be balanced.
Examples of the nonmagnetic metal include aluminum, copper, brass, and stainless steel. For example, when filling food, stainless steel that is stable and non-toxic and does not generate rust or the like is preferable.
The nonmagnetic metal preferably has a particle size of 20 μm or less. When it has a particle diameter of 20 μm or less, it can be uniformly dispersed when it is mixed with the base material of the nozzle 1 and molded.

  A pigment can be mixed in the base material of the nozzle 1. Examples of the pigment include titanium dioxide, magnesium carbonate, carbon black, magnetite, bengara, siena, and cobalt.

When silicone rubber is used as the base material of the nozzle 1, the silicone rubber is kneaded with a roll machine, and at the same time, a processing aid such as a vulcanizing agent and a silica-based powder filler, a pigment, and a nonmagnetic metal powder are added and molded. Thus, the nozzle 1 is manufactured.
The Hs hardness of the nozzle 1 is preferably less than 45 degrees, and more preferably 30 degrees or less. It has been confirmed by experiments that the restoring force of the nozzle 1 is good when the Hs hardness is less than 45 degrees. The hardness is adjusted by, for example, the amount of silica-based powder filler added. When the addition amount of the silica-based powder filler is small, the Hs hardness is small.
As an example of the main component of the composition of the nozzle 1, there is a case of 43% silicone polymer and 57% SUS.

Hereinafter, the case where the nozzle 1 according to the present embodiment is applied to a tube-type filling device will be described.
FIG. 3 is a front view showing the tube-type filling device (hereinafter referred to as a filling machine) 100.
The filling machine 100 includes a tube pump 4, a weighing machine 2 having a plurality of weight setting buttons 21, and a control box 3 having a controller 7 for controlling the tube pump 4.
The tube pump 4 includes a motor 41 that can be rotated forward and backward, and a rotary head 43 is mounted on a rotary shaft 42 extending from the motor 41. Four rollers 44 are supported by the rotary head 43 on the same circumference. A tube receiving plate 45 having a semicircular arc shape is provided on the outer peripheral side of the rotating head 43, and a tube 46 made of an elastic material is detachably interposed between the tube receiving plate 45 and the rotating head 43. . The tube pump 4 is configured to pump the fluid while intermittently squeezing the tube 46 by each roller 44 by rotating the rotary head 43 as the motor 41 is driven.
The casing 40 of the tube pump 4 is provided with a rotation adjustment dial 47 of a motor 41 used during manual filling, a forward / reverse switch 48 used during manual filling, and a reverse adjustment dial 49 when the motor 41 is rotated in reverse. ing.

One end side of the tube 46 in the longitudinal direction is inserted into a large container (not shown) such as a drum can filled with a fluid. The other end side of the tube 46 is supported by the gantry 5. A pulsation preventer 8 is interposed in the middle of the tube 46. The other end of the tube 46 is connected to one end of the connecting pipe 10, and the nozzle 1 is attached to the other end of the connecting pipe 10 by fitting the mounting flange 13 side. A filling destination container 6 is placed on the weighing machine 2, and the valve body 12 of the nozzle 1 is opposed to the opening of the container 6.
The pulsation preventer 8 prevents pulsation that occurs when the rollers 44 transfer the fluid while squeezing the tube 46.

  The control box 3 includes a start switch 31 for starting rotation of the motor 41 of the tube pump 4, a stop switch 32 for stopping rotation of the motor 41, and an automatic manual switching switch 33 that is selectively switched when the filling operation is performed manually or automatically. , And a stop timer 34. The stop timer 34 counts a predetermined time in order to perform the filling operation again after completing the filling operation to the container 6.

When the container 6 is automatically filled with the fluid, the container 6 is placed on the weighing machine 2, the mass of the fluid to be filled in the container 6 is set with the setting button 21 of the weighing machine 2, and manual automatic switching is performed. The switch 33 is switched to the automatic side, the start switch 31 is turned on, and the motor 41 of the tube pump 4 is rotated forward.
According to the forward rotation of the motor 41, the fluid is pumped into the tube 46 and a predetermined internal pressure is applied to the tube 46, so that the valve body 12 of the nozzle 1 is opened and the fluid is discharged to the container 6.

  From the start of filling until the container 6 is filled with a desired amount of fluid, the controller 7 rotates the motor 41 of the tube pump 4 at a high speed based on the measured value by the measuring machine 2. The internal pressure of the tube 46 is large, the valve body 12 of the nozzle 1 is greatly opened, and the fluid is filled into the container 6 at a high speed.

  When the measured value by the weighing machine 2 becomes the first predetermined value, the controller 7 rotates the motor 41 at a low speed while applying a brake to the motor 41. At this time, the fluid is filled into the container 6 at a low speed.

When the measured value by the weighing machine 2 becomes a second predetermined value larger than the first predetermined value, the controller 7 stops the rotation of the motor 41 and rotates the motor 41 in the reverse direction. As a result, the inside of the tube 46 is sucked back and the fluid inside is sucked in the direction opposite to the filling direction, so that the valve body 12 is quickly closed, and the fluid from the nozzle 1 is surely drained. Is prevented.
In the present embodiment, the speed at which the motor 41 is rotated forward or backward can be adjusted in accordance with the difference in viscosity of the fluid, that is, the difference in liquid breakage.

The filled container 6 is checked for the presence or absence of metal by a metal detector (not shown).
Since the nozzle 1 according to the present embodiment includes a non-magnetic metal, when the section of the nozzle 1 or itself is mixed into the fluid, the metal detector detects the presence of the metal in the fluid from the change in the magnetic field, The contamination of the section or itself is grasped. As a result, defective products including foreign substances are reliably detected. And since a metal is a nonmagnetic material, it is hard to produce rust.
In addition, when the base material of the nozzle 1 is a silicone rubber and contains a pigment, the thing of the hue which has visibility with respect to the color of a fluid can be selected as this pigment. For example, when the color of the fluid is white, a brown pigment can be used. Thereby, in addition to the detection by a metal detector, it is possible to grasp the section of the nozzle 1 or the mixture of the nozzle 1 itself into the fluid by visual recognition by color.

  After the filling machine 100 is used, it can be easily cleaned by passing the cleaning liquid through the tube 46. In addition, if there is a possibility that odors and germs may remain even if a fluid containing a fragrance and germs is passed through and the tube 46 is washed, it is difficult to reuse the tube 46, and the tube 46 is replaced with a new one. Only then can the filling operation of the different fluids be continued. When the tube pump 4 is used, it is prevented that the fluid is kneaded and the physical properties are changed as in the rotary type pump.

Embodiment 2. FIG.
The nozzle 9 according to the second embodiment of the present invention has the same configuration as the nozzle 1 according to the first embodiment except that the nozzle 9 includes a locking rib 923 described later. A similar filling machine 100 is provided.

FIG. 4 is a perspective view showing the nozzle 9.
The nozzle 9 includes a cylindrical body 91, four valve bodies 92 that are equally arranged at the tip of the cylindrical body 91, and a mounting flange 93 provided at the other end of the cylindrical body 91.
Each valve body 92 has a rhombus shape in side view, is connected at adjacent vertices, and is folded at a diagonal line in the longitudinal direction of the cylindrical body 91. The four valve bodies 92 are configured to be closed by the end surface 922 corresponding to the side on the distal end side of the rhomboid half body 921 of the valve body 92 coming into contact with the end surface 921 of the adjacent valve body 92. The valve body 92 opens when a predetermined internal pressure is applied to the cylinder body 91, and closes when the cylinder body 91 is sucked back and the fluid flowing through the cylinder body 91 is sucked in the reverse direction. As shown in FIG. 4, when each valve element 92 of the nozzle 9 is closed, the plan view has a cross shape.
The mounting flange 93 has a rectangular shape and is configured to be fitted into a fluid such as a tube.

  In the present embodiment, ribs 923 extending in the circumferential direction of the cylindrical body 11 are provided on the base end side portions (boundary portions) of the end faces 922 and 922 of the two adjacent valve bodies 92. The rib 923 is disposed on the end surfaces 922 and 922 so that the plan view has a U shape and the inner side of the U shape faces the center of the cylindrical body 91.

  The base material of the nozzle 9 is made of synthetic rubber such as silicone rubber, urethane rubber, chloroprene rubber or acrylic rubber, and elastomer containing natural rubber, synthetic resin, or the like. Silicone rubber is preferred as the substrate.

  Since the nozzle 9 according to the present embodiment includes the rib 923 as described above, even when the valve body 92 is opened at the time of filling and a load is applied to the base end portion of the end surface 922, the occurrence of tearing is well suppressed. Has been.

The nozzle 9 of the present embodiment may contain a nonmagnetic metal or may not contain a nonmagnetic metal.
When a nonmagnetic metal is not contained, when silicone rubber is used as the base material of the nozzle 9, the restoring force is good, so that the Hs hardness can be increased to 70 degrees.

The embodiment disclosed herein should be considered as illustrative in all points and not restrictive. The scope of the present invention is intended to include all modifications within the scope of the claims and the scope equivalent to the scope of the claims.
For example, in the first and second embodiments, the case where the nozzles 1 and 9 are applied to the filling machine 100 that is a tube-type filling device has been described, but the present invention is not limited to this. The nozzle 1 according to the present invention can be used in various filling devices including the above-described piston type and rotary type displacement pumps, other tube pumps, and the like.

DESCRIPTION OF SYMBOLS 1, 9 Nozzle 11, 91 Tubular body 12, 92 Valve body 121, 921 Half body 122, 922 End surface 923 Rib 2 Weighing machine 3 Control box 4 Tube pump 46 Tube 7 Controller 100 Filling machine (fluid discharge apparatus)

Claims (3)

A cylinder,
A valve body having at least four or more rhombus shapes that are equally distributed at a distal end portion of the cylindrical body and configured to open and close according to an internal pressure of the cylindrical body,
Each valve is connected at the apex next to it,
Each valve body is valley-folded along a diagonal in the longitudinal direction of the cylindrical body,
Each valve body is configured to be closed by contacting the portions corresponding to the side on the distal end side of the adjacent valve body,
A portion where two adjacent valve bodies are connected has a U-shape, the inside of the U-shape is opposed to the central axis of the cylindrical body, and the inside is from the tip of the portion where the valve body abuts Including ribs provided at predetermined intervals,
The cylindrical body and the valve body include 95% by mass to 30% by mass of an elastomer and 5% by mass to 70% by mass of stainless steel ,
A nozzle having an Hs hardness of less than 45 degrees . Comprising the nozzle according to claim 1;
A fluid discharge device configured to discharge / stop a fluid flowing through the cylindrical body by opening / closing the valve body. A pump with a motor capable of rotating forward and reverse,
A tube having one end connected to the pump and the other end connected to the nozzle;
The fluid discharge device according to claim 2 , wherein the fluid is configured to reversely rotate the motor and suck back the fluid flowing through the tube and the nozzle.

Images