JP5175638B2 - Gas injection device with added liquid - Google Patents

Description

  The present invention relates to a mixed gas injection apparatus to which a liquid to be applied to an injection target is added.

  In recent years, for example, in oral care, there is a demand for a device that intermittently injects a predetermined amount of a mixed gas added with a chemical solution between teeth to clean the space between teeth.

  For example, Patent Document 1 proposes a gas supply device that supplies a fixed amount of high-pressure gas. However, an apparatus that uses this supply device to inject a mixed gas mixed with a drug has not yet been realized. .

  The objective of this invention is providing the injection apparatus of the mixed gas which added the liquid which injects the fixed quantity mixed gas which added the liquid intermittently to the to-be-injected body.

JP-A-8-141450

  In order to achieve the above object, a jet apparatus for a mixed gas to which a liquid according to the present invention is added comprises a gas supply means, a liquid supply means, a gas-liquid mixing means for mixing the supplied high-pressure gas and liquid, and the gas The injection means for injecting the mixed gas by the liquid mixing means, and the operation means for operating the gas supply means and the liquid supply means. The high pressure gas and the liquid are introduced into the gas-liquid mixing means by the operation of the operation means. A mixed gas injection device to which a liquid for obtaining the mixed gas containing the liquid from the injection means is added, wherein the operation means increases the pressure of the operation gas or the operation liquid in the operation means by operating a push button, The operation unit for the gas supply unit and the liquid supply unit is operated by these operation gas or operation liquid to obtain the high-pressure gas and the liquid, respectively, and the injection unit through the gas-liquid mixing unit Characterized by injecting the said gas mixture Luo quantification.

  According to the mixed gas injection apparatus to which the liquid according to the present invention is added, a predetermined amount of mixed gas containing liquid is injected from the injection means by operation of the operation means.

The present invention will be described in detail based on the embodiments shown in the drawings.
FIG. 1 is a front view of a mixed gas injection apparatus to which a liquid is added, and FIG. 2 is a side view of the operation means 1, gas supply means 2, chemical supply means 3, gas-liquid mixing means 4, and injection means 5. It consists of and. A carbon dioxide gas cylinder B is attached to the gas supply means 2, and a chemical liquid container M filled with a liquid, for example, a refreshing agent, is attached to the chemical liquid supply means 3. A gas pipe 6 is connected between the gas supply means 2 and the gas-liquid mixing means 4, and a chemical liquid pipe 7 is connected between the chemical liquid supply means 3 and the gas-liquid mixing means 4. Further, from the gas-liquid mixing means 4, an injection means 5 comprising a nozzle protrudes upward.

  The main materials of these means are synthetic resin materials except for metal parts that require precision, metal parts that require durability, and rubber products.

  FIG. 3 shows a longitudinal sectional view of the main part. The operating means 1 is configured in the body 11, and a first push button 13 is provided at the left end in a large diameter cylinder hole 12 provided in the horizontal direction. The piston rod 14 is disposed so as to be movable left and right via the annular packing 15. The first piston rod 14 is always urged to the left by a compression coil spring 16, but is stopped at a predetermined position by a stopper 17.

  A small-diameter cylinder hole 19 is provided via the large-diameter cylinder hole 12 and the air passage 18, and a second piston rod 21 is disposed in the small-diameter cylinder hole 19 via an annular packing 20 so as to be movable in the left-right direction. ing. The distal end of the second piston rod 21 is a small-diameter portion 22 that protrudes outside the body 11, and a hemispherical push member 23 is fixed to the distal end. The second piston rod 21 is biased to the left by a compression coil spring 24 having a biasing force weaker than that of the compression coil spring 16 and is biased to the left in the small diameter cylinder hole 19.

  The large-diameter cylinder hole 12 and the small-diameter cylinder hole 19 communicate with the operation chamber 25 through an air passage 18 provided in the body 11. The body 11 is provided with an air intake / exhaust hole 26 communicating with the large-diameter cylinder hole 12.

  A metal carbon dioxide gas cylinder B filled with liquefied high-pressure carbon dioxide gas is attached to a lower part of the gas supply means 2 so as to be replaceable by screwing into a cylinder attachment port 32 provided in the body 31 as a gas supply source.

  An annular rubber packing 33 for sealing the base of the carbon dioxide gas cylinder B is fixed to the inner part of the cylinder attachment port 32. In the center of the cylinder attachment port 32, a puncture portion 34 to be inserted into the base of the carbon dioxide gas cylinder B is provided, and a conduction hole 34a is formed at the center of the puncture portion 34.

  Above the puncture portion 34, a filter holding portion 36 is provided with a filter 35 for preventing foreign matter from being mixed in the center. The filter holding portion 36 is screwed onto the body 31 above the first and second internal holders 37. , 38 is provided, and the body 39 is screwed into the body 11. A third internal holder 40 is provided above the second internal holder 38, and the outside of the third internal holder 40 is covered with the body 39 and the body 11.

  The first and second inner holders 37 and 38 are connected in the vertical direction, and a cylindrical measuring chamber 41 is provided at the center thereof. A lower small-diameter hole 42 is formed in the first inner holder 37 below the measuring chamber 41, and a rubber O-ring 43 is disposed below the lower small-diameter hole 42. On the other hand, the second inner holder 38 in the upper part of the measuring chamber 41 is provided with a medium-diameter hole 44 in the up-down direction. 45 and a large-diameter gas supply chamber 46 communicating with the upper narrow hole 45 is provided in the third inner holder 40.

  A movable shaft portion 47 is inserted into the measuring chamber 41 so as to be movable up and down and is urged upward by a compression coil spring 48. The upper portion of the movable shaft portion 47 is a flange 49 having a diameter that is often smaller than the inner diameter of the measuring chamber 41, and the diameter of the central shaft 50 is large enough to arrange the compression coil spring 48 around it. A small-diameter lower closing shaft 51 that can pass through the lower small-diameter hole 42 and has a conical tip is provided at the lower portion of the movable shaft portion 47, and the O-ring 43 cooperates with the lower closing shaft 51. The lower part of the measuring chamber 41 is sealed.

  An upper closing shaft 52 is fixed to the upper portion of the movable shaft portion 47. The base 53 of the upper closing shaft 52 has a diameter that passes through the medium-diameter hole 44, and the upper portion of the base 53 is provided with a tapered portion 54 that decreases in diameter as it goes upward, and passes through the upper small-diameter hole 45 at the tip. A passing pressure pin 55 is formed. A second O-ring 56 is interposed between the second and third inner holders 38 and 40 so as to seal the upper portion of the measuring chamber 41 with the tapered portion 54 of the upper closing shaft 52. .

  Further, in the gas supply chamber 46 provided in the third inner holder 40, there is a diaphragm center 58 that is in contact with the upper portion of the pressing pin 55 of the upper closing shaft 52 and is urged upward by the compression coil spring 57. Has been placed. Note that the urging force of the compression coil spring 57 is stronger than that of the compression coil spring 24 of the operation means 1. A rubber diaphragm 59 that hermetically partitions the operation chamber 25 and the gas supply chamber 46 is provided above the diaphragm center 58.

  Further, the third inner holder 40 is provided with a through hole 61 for guiding the high-pressure carbon dioxide gas in the gas supply chamber 46 to an annular groove 60 provided around the third inner holder 40. A part of the high pressure carbon dioxide gas is discharged to the outside and communicated with a gas discharge port 62 (not shown) provided on the back side of FIG. A gas pipe 6 is connected to the gas discharge port 62, and the other end of the gas pipe 6 is connected to the gas-liquid mixing means 4.

  In this gas supply means 2, between the body 31 and the puncture part 34, between the body 31 and the body 39, between the second inner holder 38 and the body 39, between the second inner holder 38 and the third inner holder 40. Meanwhile, an O-ring 63 for sealing is disposed between the body 11 and the third inner holder 40.

  The chemical liquid container M fixed to the chemical liquid supply means 3 is a flexible and flat container made of a synthetic resin material and filled with liquid. The upper part of the chemical solution container M is provided with a storage chamber for storing a fixed amount of chemical solution. When the valve portion is pressed by the push member 23, the chemical solution in the storage chamber is pushed out from the discharge tube by the pump action. It is like that.

  A gas pipe 6 from the gas supply means 2 and a chemical liquid pipe 7 from the chemical liquid supply means 3 are connected to the mixing chamber of the gas-liquid mixing means 4, and the injection means 5 protrudes outward from the mixing chamber. .

In use, the carbon dioxide gas cylinder B is fixed to the gas supply means 2, and the chemical liquid container M is fixed to the chemical liquid supply means 3. When the carbon dioxide cylinder B is screwed into the cylinder attachment port 32, the base of the carbon dioxide cylinder B is sealed with the rubber packing 33, and at the same time, the puncture portion 34 breaks through the metal thin plate covering the base. As a result, the liquefied high-pressure carbon dioxide gas inside the carbon dioxide gas cylinder B is vaporized to become high-pressure carbon dioxide gas having a pressure of, for example, 60 kg / cm ^2. The measuring chamber 41 is filled with the shaft 51. The movable shaft portion 47 is moved upward by the compression coil spring 48, and the tapered portion 54 of the upper closing shaft 52 is in close contact with the second O-ring 56, so that the high-pressure carbon dioxide gas in the measuring chamber 41 is exposed to the outside. There is no leakage.

  The chemical liquid container M connects its discharge pipe to the chemical liquid pipe 7 of the chemical liquid supply means 3 and fixes the upper part to the chemical liquid supply means 3. This fixation pushes a fixed amount of chemical into the storage chamber.

  Here, when the gas supply means 2 and the carbon dioxide cylinder B are grasped with one hand and the operation push button 13 of the operation means 1, that is, the first piston rod 14 is pushed in with the thumb, as shown in FIG. The large-diameter cylinder hole 12, which was atmospheric pressure through, is sealed by an annular packing 15, and the first piston rod 14 moves to the right in FIG. 2 against the urging force of the compression coil spring 16, and the large-diameter cylinder The air in the hole 12 is compressed. The compressed air is supplied to the small-diameter cylinder hole 19 through the air passage 18 and the second piston rod 21 is pushed to the right against the biasing force of the compression coil spring 24. Is weak, the second piston rod 21 starts to move to the right as soon as possible.

  By this movement, the push member 23 pushes the valve portion of the chemical liquid container M attached to the chemical liquid supply means 3, thereby pushing out the chemical liquid in the storage chamber of the chemical liquid container M, and the chemical liquid is gas-liquid mixing means via the chemical liquid pipe 7. 4 mixing chambers. Further, in the chemical solution container M, the chemical solution is pushed out again into the storage chamber.

  At almost the same time, the compressed air flows into the operation chamber 25, the internal pressure in the operation chamber 25 is about twice the atmospheric pressure, and presses the diaphragm 59 downward, often behind the movement of the second piston rod 21. To do. This is because the urging force of the compression coil spring 57 is larger than the urging force of the compression coil spring 24 that operates the second piston rod 21, so that there is a slight time difference. The downward pressing force on the diaphragm 59 is the product of the area of the diaphragm 59 and the internal pressure in the operation chamber 25. On the other hand, the force from the bottom to the top of the diaphragm 59 is obtained by applying the spring force of the two compression coil springs 48 and 57 to the product of the area of the medium diameter hole 44 on the measuring chamber 41 and the gas pressure filled in the measuring chamber 41. This upward force is transmitted to the diaphragm 59 via the movable shaft portion 47, the upper closing shaft 52, and the diaphragm center 58.

  In this case, the force from above applied to the diaphragm 59 from the operation chamber 25 is designed to overcome the force from below. Accordingly, the diaphragm 59 bends downward so that the operation force by the operation push button 13 pushes down the diaphragm center 58 and the movable shaft portion 47. Due to the downward movement of the movable shaft portion 47, the lower closing shaft 51 of the movable shaft portion 47 is inserted into the O-ring 43, and the lower portion of the measuring chamber 41 is sealed. On the other hand, in the upper part of the movable shaft part 47, the taper part 54 of the upper closing shaft 52 is separated from the O-ring 56, so that the high-pressure carbon dioxide gas filled in the measuring chamber 41 has a medium diameter hole 44 and an upper small diameter hole. The gas rapidly flows into the gas supply chamber 46 through the space between the pressure pin 45 and the pressing pin 55.

  Further, the high-pressure carbon dioxide gas in the gas supply chamber 46 is discharged from the annular groove 60 through the through hole 61 of the third inner holder 40 to the mixing chamber of the gas-liquid mixing means 4 through the gas pipe 6. In the mixing chamber, the mixed gas containing the chemical liquid is rapidly injected in a pulse form from the tip of the injection means 5 while mixing the chemical liquid in the process in which carbon dioxide gas is injected from the injection means 5. For example, the mixed gas is sprayed between the teeth from the spraying means 5 to clean the teeth. This injected mixed gas corresponds to the amount of carbon dioxide gas filled in the measuring chamber 41 per time.

  When the finger is released from the operation push button 13, the first and second piston rods 14, 20 are moved to the original left side position by the urging force of the compression coil springs 16, 21, and the large diameter cylinder hole 12, the small diameter cylinder hole 19, The pressure in the operation chamber 25 becomes atmospheric pressure through the air intake / exhaust hole 26. Further, since the movable shaft portion 47 and the diaphragm center 58 are pushed up by the compression coil springs 48 and 57, the shape of the diaphragm 59 is also restored.

  At this time, the upper portion of the measuring chamber 41 is sealed by the tapered portion 54 and the O-ring 56 of the upper closing shaft 52, and the lower portion of the measuring chamber 41 is opened from the O-ring 43 because the lower closing shaft 51 is pulled up. Then, the high-pressure carbon dioxide gas from the carbon dioxide gas cylinder B is filled in the measuring chamber 41 again.

  Then, when the operation push button 13 is pressed, the mixed gas is ejected from the ejection means 5 again through the above-described process. Thus, by repeating the operation of the operation push button 13 of the operation means 1, the mixed gas can be repeatedly ejected.

  In addition, although the above-mentioned Example demonstrated as what is used for oral care, it is not limited to this, It can be used for various uses. The operation inside the operation means 1 uses air as the operation gas, but may be another operation gas or an operation liquid.

  Further, the supplied gas is not limited to carbon dioxide gas, and a chemical liquid or various liquids can be used as the supplied liquid. The gas carbon dioxide cylinder B and the chemical liquid container M may be covered with an outer casing, and the gas pipe 6 and the chemical liquid pipe 7 may be prevented from being exposed to the outside.

  Further, the injection means 5 can change the position of the gas-liquid mixing means 4 and can be directed in any direction, and the chemical liquid supply means 3 can be attached to any position.

  The injection speed of the mixed gas from the injection means 5, the gas arrival distance, the injection amount, the particle size of the chemical solution, and the like can be adjusted by appropriately setting the design values of the respective members including the nozzle diameter.

It is a front view. It is a side view. It is an expanded vertical sectional view of the principal part. It is an expanded longitudinal cross-sectional view of the principal part of an operation state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Operation means 2 Gas supply means 3 Chemical liquid supply means 4 Gas-liquid mixing means 5 Injection means 6 Gas piping 7 Chemical liquid piping 11, 31, 39 Body 12 Large diameter cylinder hole 13 Operation push button 14, 21 Piston rod 16, 24, 48, 57 compression coil spring 18 air passage 19 small diameter cylinder hole 23 push member 25 operation chamber 32 cylinder mounting port 37, 38, 40 inner holder 41 measuring chamber 42, 45 small diameter hole 46 gas supply chamber 47 movable shaft portion 51, 52 closing shaft 54 Tapered part 55 Pressing pin 59 Diaphragm 60 Annular groove B Carbon dioxide gas cylinder M Chemical solution container

Claims (7)

  Gas supply means, liquid supply means, gas-liquid mixing means for mixing the supplied high-pressure gas and liquid, injection means for injecting a mixed gas by the gas-liquid mixing means, the gas supply means, and the liquid supply means The operation of the operation means, the high pressure gas and the liquid are introduced into the gas-liquid mixing means, and the mixed gas is injected by adding the liquid to obtain the mixed gas containing the liquid from the injection means The operation means increases the pressure of the operation gas or the operation liquid in the operation means by operating a push button, and operates the operation unit for the gas supply means and the liquid supply means with these operation gas or operation liquid. The high-pressure gas and the liquid are respectively obtained and injected as a fixed amount of the mixed gas from the injection means through the gas-liquid mixing means. Of the injection device.   2. The mixed gas injection apparatus according to claim 1, wherein a high-pressure gas cylinder is attached to the gas supply means, and a liquid container is attached to the liquid supply means.   The gas supply means is provided with a measuring chamber, the operation means discharges a fixed amount of high-pressure gas from the measuring chamber to the gas-liquid mixing means, and the measuring chamber is filled with a fixed amount of high-pressure gas from the high-pressure gas cylinder. 3. A mixed gas injection apparatus to which the liquid according to claim 2 is added.   A movable shaft portion is arranged in the weighing chamber, and a closing shaft and an O-ring are provided as the operation portions at the upper and lower portions of the movable shaft portion, respectively, and the upper and lower closing shafts are alternately arranged by the vertical movement of the movable shaft portion. 4. The mixed gas injection apparatus according to claim 3, wherein the mixed gas injection apparatus is operated.   The said high pressure gas was a high pressure carbon dioxide gas, The injection apparatus of the mixed gas which added the liquid as described in any one of Claims 1-4.   3. The mixed gas injection apparatus according to claim 2, wherein a predetermined amount of liquid is supplied from the liquid supply means by a pump action by operating the valve portion of the liquid container by the operation unit. .   The mixed gas injection apparatus according to claim 1, wherein the operation gas is air.

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