JPH08299853A - Fluid ejection device - Google Patents

Abstract

PURPOSE: To provide a liquid ejection device which can eject liquid surely when a pump is operated. CONSTITUTION: When an ejection nozzle 300 is not used for a long period of time and residual disinfectant liquid at the end 61 of a check valve 60 and in the upper part 75 of a through channel dries, the valve 60 is glued to the upper part 75 of the through channel. A movable nozzle 70 is lifted in the arrow 600 direction, and a contact piece 93 is contacted with the end 61 of the valve 61 to move the valve 60 forcibly in the arrow 500 direction. The glued parts are separated by the movement to open an inflow port 55 so that the valve 60 works normally. In this way, the disinfectant liquid is injected from an ejection hole 10 through a through channel 50 only when a pump is operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid ejection device,
In particular, it relates to improving the certainty of fluid material ejection.

[0002]

2. Description of the Related Art Normally, it is necessary to disinfect hands in hospitals and other places where clean environments such as food improvement are required. For such disinfection, a hand sanitizer is generally used.

FIG. 12 shows an example of an (automatic) hand sanitizer 200. When using the hand sanitizer 200, the hand is brought close to the vicinity of the jet nozzle 100. Injection nozzle 100
When a hand approaches the vicinity, a detection sensor (not shown) provided near the ejection nozzle 100 detects the hand. When the detection sensor detects the hand, the disinfectant solution is ejected from the ejection nozzle 100 to the hand.

An outline of the structure of such a hand sterilizer 200 is shown in FIG. The hand sanitizer 200 includes a liquid tank 5,
The pump 7 and the injection nozzle 100 are provided. The liquid tank 5 and the pump 7 are connected by a tube 56, and the pump 7 and the injection nozzle 100 are connected by a tube 57.

The disinfectant solution 6 is stored in the solution tank 5, and when the pump 7 operates (pressurizes and discharges the disinfectant solution) based on the detection of the detection sensor, the disinfectant solution 6 in the solution tank 5 is in the tube 56. It is ejected from the ejection nozzle 100 through the pump 7 and the tube 57.

Next, the injection nozzle 100 (with a check valve) used in the hand sanitizer 200 will be described. Here, the check valve is a valve that both prevents the liquid from dripping from the nozzle and prevents the antiseptic liquid from returning.

FIG. 10 shows an injection nozzle 10 with a check valve.
The figure which shows the cross section of 0 is raised. This check valve-equipped injection nozzle 100 is connected to the pump 7 via a tube 57 as shown in FIG. 11, and the flow passage 45 in the nozzle is
It is connected to the tube 56 via the flow path connecting portion 40.

The check valve-equipped injection nozzle 100 comprises a nozzle holder 90 and a nozzle 70.
Are connected to the nozzle holder 90 by screws 85. Here, the nozzle holder 90 is provided with the flow channel 45, and the nozzle 70 is provided with the through flow channel 50. The channel 45 and the through channel 50 are connected to each other.

A check valve 60 is pressed above the through passage 50. A biasing spring 63 is provided between the bottom portion 62 of the check valve 60 and the spring support portion 20, and biases the check valve 60 in the direction of arrow 600. As a result, the tip end portion 61 of the check valve 60 is pressed against the upper part 75 of the through flow passage to be in close contact therewith, and the connection between the flow passage 40 and the through flow passage 50 is cut off (the through flow passage is closed).

Next, the injection nozzle 100 with a check valve
However, the operation when ejecting the disinfecting liquid will be described. While the pump 7 is operating, the disinfectant solution 6 is pressurized and discharged by the pump 7, and is sent out into the flow channel 45 through the tube 57 and the flow channel connecting portion 40. The disinfectant solution sent into the flow channel 45 tries to enter the through flow channel 50 from the flow channel 45.

At this time, the pressure of the disinfecting liquid in the flow passage 45 is larger than the force (pressure) for pressing the check valve 60 against the through passage upper portion 75. Therefore, the biasing spring 63 contracts due to the pressure of the disinfecting liquid received by the tip portion 61 of the check valve 60, and the check valve 60 moves in the direction of the arrow 500.

By the movement of the check valve 60, the tip portion 61 of the check valve 60 is separated from the upper portion 75 of the through passage.
As a result, the flow channel 40 and the through flow channel 50 are connected (the through flow channel is opened). When the through channel 50 is opened, the pressurized disinfectant solution in the channel 45 flows into the through channel 50, and the inflowing disinfectant solution of the passage 21 in the spring support portion 20 and the injection member 16 is discharged. It is ejected from the nozzle hole 10 to the outside through the slit hole 15.

On the other hand, when the pump 7 is stopped, the flow path 45
The pressure of the disinfectant inside the check valve 60 passes through the upper part of the flow path 7.
It is smaller than the force (pressure) pressed against 5. As a result, the urging spring 63 that has once contracted expands, and the check valve 6
0 moves in the direction of arrow 600.

By the movement of the check valve 60, the tip portion 61 of the check valve 60 comes into close contact with the upper portion 75 of the through flow passage, and the connection between the flow passage 40 and the through flow passage 50 is cut off (through flow passage). Is closed).

By the operation of the check valve 60 as described above,
The disinfecting liquid in the flow path 45 does not flow into the through flow path 50 after the pump is stopped. Therefore, the disinfectant solution is not ejected from the nozzle after the pump is stopped. Further, since the check valve 60 is biased by the biasing spring 63, the check valve 60 is brought into close contact with the through flow passage upper portion 75 immediately after the pump is stopped. Therefore, excess disinfectant solution does not leak from the flow channel 45 into the through flow channel 50.

That is, the injection nozzle 10 with a check valve
When 0 is used for the hand sanitizer 200, the disinfectant solution is sprayed from the nozzle only while the pump is operating, and there is no fear that excess disinfectant solution will leak from the nozzle hole 10.

By the way, in the hand sanitizer 200,
Generally, a solenoid pump is used to pressurize and discharge the disinfectant solution. However, since the solenoid pump emits a large amount of noise during operation, it has been desired to use a pump that does not emit much noise.

Therefore, it has been proposed to use a gear pump which produces less noise during operation, instead of the solenoid pump. The operating principle of the gear pump will be described below.

FIG. 9 shows a cross-sectional view of the gear pump 30. The gear pump 30 includes two rotary gears 34 and 35.
Are provided, and each has a rotating shaft 36 and 3
7 is provided. Further, the gear pump 30 has a suction port 3
2 and a discharge port 33 are provided, and a suction (suction) shoe 39 is provided near the suction port 32.
The inlet 32 is connected to the tube 56, and the outlet 3
3 is connected to the tube 57.

When the gear pump 30 is operated, the rotary shafts 36 and 37 rotate in the direction of arrow 700. The rotary gears 34 and 35 rotate in the direction of arrow 700 in conjunction with the rotary shafts 36 and 37. This rotating gear 36 and 3
The rotation of 7 creates a vacuum in the slight gap 38 between the two rotating gears.

When a vacuum is generated in the gap 38 between the two rotary gears, the disinfectant solution in the tube 56 is sucked into the gap 38 and sucked into the gear pump 30. Further, the disinfecting liquid sucked into the pump is pushed out in the direction of the arrow 700 by the rotation of the rotary gears 36 and 37, and is forcibly discharged from the discharge port 33. The disinfecting liquid discharged from the discharge port 33 is applied to the ejection nozzle 100.

As described above, even if the gear pump 30 is used in the hand sterilizer 200, it is possible to pressurize and discharge the disinfecting liquid as reliably as the solenoid pump. Furthermore, the gear pump 30 is connected to the injection nozzle 10 with a check valve.
When used with No. 0, the disinfectant can be sprayed from the nozzle only while the pump is operating, and there is no risk of excess disinfectant leaking from the nozzle hole 10 due to residual pressure.

[0023]

However, the conventional injection nozzle has the following problems. When the disinfecting liquid flows into the through flow passage 50, it always passes through the through flow passage upper portion 75 (FIG. 10). Therefore, even when the check valve 60 is energized and the tip 61 comes into close contact with the through-flow passage upper portion 75, the disinfectant solution slightly remains between the through-flow passage upper portion 75 and the tip portion 61.

For example, if the hand sanitizer 200 is not used, the disinfectant solution remaining between the through passage upper part 75 and the tip 61 is dried. That is, the liquid component or the like in the remaining disinfectant solution is evaporated and the component in the disinfectant solution is dried between the upper part 75 of the through-flow passage and the tip portion 61 to become a residue. When this is repeated, as shown in FIG. 8, the tip portion 6 of the check valve 60 is
1 is adhered (glued) to the upper part 75 of the through flow path.

If the tip portion 61 of the check valve 60 is glued to the upper portion 75 of the through passage by the residue 65, the check valve 60 will not move. Therefore, even if the pump operates, the check valve 60 does not move in the direction of the arrow 500, and the disinfecting liquid cannot be jetted from the jet nozzle. Therefore, when the hand sanitizer 200 is not used for a long time and is used again, there is a problem that the spray cannot be performed.

When such a situation occurs, the injection nozzle 100 has to be once removed from the hand sanitizer 200 and disassembled and cleaned. Therefore, it is impossible to perform necessary disinfection while performing disassembly and cleaning, so that the work must be stopped, which causes a problem that work efficiency is reduced. In addition, disassembling and cleaning requires skill and is troublesome.

Further, when the gear pump 30 shown in FIG. 10 is used in the hand sterilizer 200, there are the following problems. It is difficult for the gear pump 30 to pressurize and discharge an object having a small mass (for example, air) unlike the solenoid pump due to the above-described operation principle. Therefore, when air is mixed in the tubes 56 and 57 due to the nonuse of the hand sanitizer 200 for a long period of time, the gear pump 30
Depending on the situation, sufficient pressure cannot be applied.

That is, if air is mixed in the tube, air may mix in the pump even if the gear pump 30 operates, causing the pump to run idle. It may be sent in. Therefore, despite the pump running,
The pressure for moving the check valve 60 in the direction of the arrow 500 is not applied, and the tip portion 61 of the check valve 60 is located at the upper portion of the through passage 7.
Continue to stick to 5. As a result, even during the pump operation, the connection between the flow passage 40 and the through flow passage 50 is interrupted (the through flow passage is closed), and there is a problem that the disinfectant solution cannot be injected from the injection nozzle 100.

In addition, the hand sanitizer 200 has a gear pump 20.
When 0 is used, similar problems occur not only when the disinfecting device is not used for a long time but also when the disinfecting device is first operated.

Therefore, it is an object of the present invention to provide a liquid ejecting apparatus which can surely inject liquid during pump operation.

[0031]

According to another aspect of the present invention, there is provided a fluid ejecting apparatus which comprises a first passage for a fluid, a second passage connected to the first passage through an inlet, and a second passage. An injection port for injecting the fluid substance, a blocking valve provided in the second flow passage, and urged to close the inflow port when the pressure of the fluid substance from the first flow passage is below a predetermined value, In the fluid ejection device,
It is characterized in that a blocking valve moving means for moving the blocking valve located at the inlet in a direction opposite to the urging direction is provided so that the inlet opens.

A fluid ejecting apparatus according to a second aspect of the present invention is the fluid ejecting apparatus according to the first aspect, wherein the first flow passage is provided in the first casing and the second flow passage is provided in the second casing. The moving means includes a second housing movable in the first housing direction and an abutting portion provided on the first housing, and the abutting portion is normally the blocking valve in the first flow path. And the blocking valve is moved in the direction opposite to the biasing direction so that when the second housing is moved in the first housing direction, the blocking valve abuts and the inflow port opens. There is.

A fluid ejecting apparatus according to a third aspect of the present invention is the fluid ejecting apparatus according to the first aspect, wherein the blocking valve moving means includes a moving contact portion provided near the first passage so as to be movable in the second passage direction. In the normal case, the moving contact portion faces the blocking valve in the first flow passage, and when the moving contact portion moves in the second flow passage direction, the moving contact portion contacts the blocking valve to open the inlet. In addition, the blocking valve is moved in a direction opposite to the urging direction.

[0034]

In the fluid ejecting apparatus according to the first aspect, the blocking valve moving means moves the blocking valve located at the inlet in the direction opposite to the biasing direction to open the inlet. Therefore, even if the blocking valve is glued to the inflow port by a fluid substance that has been dried for a long period of time, the blocking valve can be released from the glue by simply moving the blocking valve moving means.

In the fluid ejecting apparatus according to the second aspect, when the second housing is moved in the direction of the first housing, the blocking valve is moved so that the contact portion contacts the blocking valve and the inflow port opens. Therefore, even if the blocking valve is glued to the inflow port due to a dried fluid due to non-use for a long period of time, the gluing of the blocking valve is released only by moving the second casing toward the first casing. be able to.

In the fluid ejecting apparatus according to the third aspect, when the moving contact portion is moved in the second flow path direction, the fluid contact device abuts the blocking valve to move the blocking valve so that the inflow port opens. Therefore, even if the blocking valve is glued to the inflow port by a dried fluid due to non-use for a long period of time, the gluing of the blocking valve is released only by moving the moving contact portion in the second flow path direction. be able to.

[0037]

EXAMPLE An example of an injection nozzle which is a fluid injection device according to the present invention will be described. Here, the case where the injection nozzle according to the present embodiment is used in the hand sanitizer 200 shown in FIG. 11 will be described.

FIG. 2 is a view showing the appearance of the injection nozzle 300. FIG. 2A is a view of the injection nozzle 300 as seen from the side surface, and FIG. 2B is a view of the injection nozzle 300 as seen from a plane.

The jet nozzle 300 includes a nozzle holder base portion 90 which is a first housing, a movable nozzle fixing portion 88, a movable nozzle holder 80 and a movable nozzle 70 which serves as a second housing.
It has. The nozzle holder base portion 90 is provided with the flow path connecting portion 40 and the screw holes 86. Also,
In the nozzle holder base portion 90, the flow path 4 that is the first flow path is provided.
5 is provided, and the flow path 45 is connected to the flow path connecting portion 40.

FIG. 1 is a sectional view showing the structure of the injection nozzle 300. Channel 45 in nozzle holder base 90
A spring 91 is provided inside, and a contact piece 93 as a contact portion is provided so as to penetrate through the spring 91.

On the other hand, the movable nozzle 70 is provided with a through flow passage 50 as a second flow passage, and an inflow port 55 is provided above the through flow passage 50.

In the jet nozzle 300, the movable nozzle 7
0 is incorporated in the movable nozzle holder 80, and the movable nozzle holder 80 is incorporated in the movable nozzle fixing portion 88. The movable nozzle fixing portion 88 is screwed to the nozzle holder base 90 portion.

The movable nozzle holder 80 and the movable nozzle fixing portion 8 are provided between the movable nozzle 70 and the movable nozzle holder 80.
8 and between the movable nozzle fixing portion 88 and the nozzle holder base portion 90, an O-ring 77 is provided to prevent liquid leakage.

Here, the flow channel 45 in the nozzle holder base portion 90 is connected to the through flow channel 50 via the inflow port 55. In addition, a check valve 60, which is a blocking valve, is provided in the through-flow passage 50 by being biased by a spring 63 toward the inflow port 55, and the tip portion 61 of the check valve 60 is above the through-flow passage by being biased. It is in close contact with the portion 75 and blocks the through channel 50 and the channel 45.

The spring 63 is provided on the spring support portion 20, and the passage 21 is provided in the spring support portion 20. A jetting member 16 having a slit hole 15 is provided below the spring support portion 20.

Next, the operation of the spray nozzle 300 in the hand sterilizer 200 will be described. For example, when the hand sanitizer 200 is not used for a long time, the spray nozzle 300
The residue 65 of the disinfecting liquid remaining between the upper part 75 of the through-flow passage and the tip portion 61 of the check valve 60 is dried. When the remaining residue 65 of the disinfectant solution is repeatedly dried, the tip portion 61 of the check valve 60 is glued to the upper portion 75 of the through passage.

FIG. 8 is a diagram showing a state in which the tip portion 61 of the check valve 60 is glued to the upper portion 75 of the through passage. Thus, once the tip portion 61 of the check valve 60 is glued to the through passage upper portion 75, the check valve 60 cannot move thereafter (the inlet 55 is closed). As a result, the disinfectant cannot be sprayed.

When the above-mentioned condition occurs during the pump operation and the disinfectant solution is not sprayed from the spray nozzle 300,
The user of the hand sanitizer 200 lifts the movable nozzle 70 with the fingertip once or twice in the direction of the arrow 600 (FIG. 3A).

FIG. 4 shows the state of the movable nozzle 70 when the user lifts the movable nozzle portion 70 in the direction of arrow 600. When the movable nozzle 70 is lifted in the direction of arrow 600, the nozzle 70 pushes up the movable nozzle holder 80, the end 89 of the movable nozzle holder 80 contacts the spring 91, and lifts the spring 91 in the direction of arrow 600. As a result, the spring 91 contracts.

When the spring 91 contracts, the contact piece 93 penetrating the spring 91 contacts the tip portion 61 of the check valve 60 and moves the check valve 60 in the direction of arrow 500. That is, the check valve 60 moves in the direction opposite to the urging direction.

When the check valve 60 moves in the direction of the arrow 500, the glued portion as shown in FIG. 8 is forcibly peeled off by the contact piece 93. This opens the inflow port 55.

FIG. 5A shows a state near the check valve 60 when the glued portion is forcibly peeled off by the contact piece 93. Even when the glued portion is forcibly peeled off, the residue 65 remains on the through flow passage upper portion 75 and the tip portion 61 of the check valve 60 immediately after peeling off.

When the glued portion of the check valve 60 is peeled off as described above, the check valve 60 operates normally, and when the pump is operated, the disinfectant solution passes through the through flow path 50 and the inside of the spring support portion 20. Slit hole 1 of passage and injection member 16
It is injected from the injection hole 10 which is an injection port through 5. Note that the disinfectant liquid passes near the upper part 75 of the through-flow passage after each injection even after the glued portion of the check valve 60 is peeled off. Therefore, when the injection is repeated, the residue 65 remaining on the through passage upper portion 75 and the tip portion 61 of the check valve 60.
Is dissolved by the liquid component of the disinfectant solution, and
5 and the tip 61 of the check valve 60 are completely removed.

In FIG. 5B, the residue 65 is shown in FIG.
The state near the check valve 60 when removed from FIG. As described above, since the hand sanitizer 200 using the spray nozzle 300 is not used for a long period of time, even if the disinfectant solution is not sprayed from the movable nozzle 70, it is easy to lift the movable nozzle 70 with the fingertip once or twice. And, it becomes possible to surely spray the disinfectant (see FIG. 3A).

Next, the operation when the spray nozzle 300 of this embodiment is applied to a finger sterilizer (using a gear pump) 200 will be described. When the hand sanitizer 200 using the gear pump is not used for a long period of time, air may be mixed in the tube 56 or the tube 57 (FIG. 11).
reference).

In this case, the user of the hand sterilizer 200 lifts the movable nozzle 70 in the direction of arrow 600 with the palm of the hand while operating the gear pump, as shown in FIG. 3B.
When the movable nozzle 70 is lifted in the direction of arrow 600,
The injection nozzle 300 will be in the state as shown in FIG. That is, the check valve 60 is forcibly pushed down by the contact piece 93, and the inflow port 55 is opened.

As a result, the air mixed in the tube causes the gear pump to run idle, and the inflow port 55 is opened even if the disinfecting liquid to be jetted is sent to the flow path 45 without being sufficiently pressurized. Therefore, the disinfectant solution is in the channel 45.
And is ejected from the ejection hole 10 through the through flow path 50.
Here, only the disinfecting liquid is jetted after the mixed air is completely discharged from the jet hole 10. The user stops lifting the movable nozzle 70 after confirming that only the disinfecting liquid is sprayed.

By performing the above operation, even if air is mixed in the tube due to the hand sanitizer 200 not being used for a long period of time, the mixed air does not mix in the gear pump and cause idling. . As a result, the disinfectant solution is sufficiently pressurized and sent into the flow path 45. Therefore, while the gear pump is operating, sufficient pressure can be generated to move the check valve 60 in the direction of the arrow 500.

As a result, since the hand sanitizer 200 using the gear pump is not used for a long period of time, even if air is mixed in the tube or the like, the movable nozzle 70 is lifted by the palm until only the disinfectant is sprayed. It is possible to spray the disinfectant solution easily and surely (Fig. 3
(See B). Therefore, by using the injection nozzle 300, the finger sterilizer 200 using the gear pump can be reliably operated.

Next, another embodiment of the jet nozzle according to the present invention will be described. In addition, the injection nozzle 40 of the present embodiment
0 is also used in the hand sanitizer 200 shown in FIG.

FIG. 6 is a sectional view showing the structure of the injection nozzle 400. The injection nozzle 400 of this embodiment includes a nozzle holder portion 90 and a nozzle portion 70.

The inside of the nozzle holder portion 90 has a partition wall 99.
Is divided into the mounting recess 98 and the flow path 45 which is the first flow path. A spring 91 is provided in the mounting recess 98 so as to penetrate a moving contact piece 95, which is a moving contact portion. An end portion 95T is provided on the upper end portion of the moving contact piece 95.

Here, the flow channel 45 is connected to the flow channel 45.
(See FIGS. 2 and 3) are connected, and the tip portion 95S of the moving contact piece 95 projects into the flow path 45. In addition,
An O-ring 78 is provided between the moving contact piece 95 and the dividing wall 99 to prevent liquid leakage.

In such an injection nozzle 400, the nozzle portion 70 has substantially the same structure as the movable nozzle shown in FIG. 1, and the nozzle holder portion 90 and the nozzle portion 70 have the screw holes 8
6 are connected by screws (not shown) passing through.
That is, the ejection nozzle 400 has a characteristic that the structure is simple as compared with the ejection nozzle 300 shown in FIG.

In this injection nozzle 400, when the tip portion 61 of the check valve 60 is glued to the upper part 75 of the through passage due to the drying of the residue of the disinfecting liquid, the end portion 9 of the moving contact piece 95 is formed.
5T is pressed in the direction of arrow 500 with a finger or the like (FIG. 6). As a result, the moving contact piece 95 moves in the direction of the arrow 500, the tip 95S of the moving contact piece 95 abuts the tip 61 of the check valve 60, and the check valve 60 is moved to the arrow 500.
Direction (Fig. 7). Therefore, the check valve 6
No. 60 of the front end portion 61 and the upper portion 75 of the through flow passage
However, it is forcibly peeled off by the movement of the check valve 60.

When the finger is removed from the end portion 95T after the adhesive is removed, the moving contact piece 95 returns to its original position due to the restoring force of the spring 91 (see FIG. 6).

When the glue is peeled off, the check valve 60
It is pushed down by the pressurized disinfecting liquid that has flowed into the flow passage 45 from the flow passage connecting portion 40 during the pump operation. This check valve 6
When 0 is pushed down, the inflow port 55 is opened, and the disinfectant solution is ejected from the ejection hole 10 through the through channel 50.

Therefore, even if the hand sanitizer provided with the spray nozzle 400 is not used for a long period of time and the disinfectant solution is glued and the disinfectant solution is not sprayed from the spray hole 10, the end of the moving contact piece 95 is removed. The disinfectant solution can be easily and reliably ejected by simply pressing the portion 95T in the direction of the arrow 500 with a finger or the like.

When the injection nozzle 400 of this embodiment is applied to the hand sanitizer 200 using a gear pump,
While operating the gear pump, the end portion 95T is indicated by the arrow 50 with a finger or the like.
It is possible to completely discharge the air mixed in the tubes 56 and 57 simply by pressing in the 0 direction. Therefore, by using the injection nozzle 400, it is possible to reliably operate the hand sanitizer 200 using the gear pump.

In each of the above-described embodiments, the case where the disinfecting liquid is used as the fluid substance (the case where the jet nozzle 300 or the jet nozzle 400 is used in the hand sanitizer 200) has been described. However, other applications may be used as long as the tip 61 of the check valve 60 is glued to the upper portion 75 of the through-flow passage by not using the jet nozzle for a long time. For example, soap water is jetted. You may make it use it for the nozzle. That is, the injection nozzle 300 or the injection nozzle 4
00 may be used in applications using these fluids, such as soap water dispensers.

In the above embodiment, the nozzle holder base portion (or nozzle holder portion) 90 and the movable nozzle fixing portion 8 are provided.
8. The material of the movable nozzle holder 80 and the movable nozzle or nozzle portion 70 is a material generally used for each portion of the injection nozzle, such as plastic. However, the material of each part is not limited to plastic or the like as long as it does not affect these functions, and may be formed of other material, for example, other synthetic resin, metal, etc. may be used. Good.

Further, in the above embodiment, the material of the check valve 60 is a material generally used for the check valve used for the injection nozzle, such as rubber. However, the check valve 60 is not limited to rubber or the like as long as it can prevent an excessive amount of fluid, and may be formed of another material, for example, another resin, synthetic resin, metal or the like is used. You may do it.

In the above embodiment, the tip 61 of the check valve 60 is brought into contact with the contact piece 93 fixed by lifting the movable nozzle 70 (FIG. 4), or the end of the movable contact piece 95 is contacted. By pressing the portion 95T, the tip portion 95S is brought into contact with the tip portion 61 (FIG. 7), and the check valve 60 is forcibly moved downward. However, if the check valve 60 can be reliably pushed down, the contact piece 93
The check valve 60 may be moved by moving both the movable nozzle 70 and the movable nozzle 70.

Further, in the above embodiment, the jet nozzle 3
The contact piece 93 of No. 00 is integrally formed with the nozzle holder base portion 90. However, the tip 61 of the check valve 60
The nozzle holder base 90 may be formed separately from the nozzle holder base 90 as long as the check valve 60 can be pushed down.
In this case, the material of the contact piece 93 does not have to be the same as the material of the nozzle holder base portion 90, and may be any synthetic resin, metal, or the like.

Further, in the above embodiment, the injection nozzle 400 is composed of the nozzle holder portion 90 and the nozzle portion 70. However, the nozzle holder 90 and the nozzle 70 may be integrally formed as long as the check valve 60 can be forcibly moved downward to remove the glue.

In the above embodiment, the tip portion (tip portion 95S) of the contact piece 93 or the moving contact piece 95 is formed in a round shape. However, any other shape may be used as long as it can surely contact the tip portion 61 of the check valve 60 and push down the check valve 60. For example, the tip portion may be formed in a flat shape or a concave shape. May be.

[0077]

In the fluid ejecting apparatus according to the first aspect, the blocking valve moving means moves the blocking valve at the inflow port to open the inflow port. That is, even if the blocking valve is glued to the inlet due to a dried fluid due to non-use for a long period of time,
The gluing of the blocking valve can be released simply by moving the blocking valve moving means.

In the fluid ejecting apparatus according to the second aspect,
When the second housing is moved in the first housing direction, the contact portion contacts the blocking valve and opens the inflow port. That is, even if the blocking valve is glued to the inflow port due to a dry fluid substance due to non-use for a long period of time, the gluing of the blocking valve is released only by moving the second casing toward the first casing. be able to.

In the fluid ejecting apparatus according to the third aspect, when the moving contact portion is moved in the second flow passage direction, the contact portion contacts the blocking valve to open the inflow port. That is, even if the blocking valve is glued to the inflow port by a dried fluid due to non-use for a long period of time, the gluing of the blocking valve is released only by moving the moving contact portion in the second flow path direction. be able to.

Therefore, in the fluid ejecting apparatus according to the first, second and third aspects, it is possible to easily and reliably release the blocking valve from the glue and inject the liquid.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a structure of an injection nozzle according to the present invention.

FIG. 2 is a view showing a side surface and a plane of the injection nozzle shown in FIG.

FIG. 3 is a diagram showing an operation when a disinfecting liquid is not jetted from the jet nozzle shown in FIG. 1 during pump operation.

FIG. 4 is a diagram showing a state inside the injection nozzle when the user performs the operation shown in FIG.

5 is a diagram showing a state near a check valve among the states in the injection nozzle shown in FIG.

FIG. 6 is a cross-sectional view showing the configuration of another embodiment of the injection nozzle according to the present invention.

7 is a diagram showing a state inside the injection nozzle when an end portion 95T of a moving contact piece 95 of the injection nozzle shown in FIG. 6 is pressed in a direction of an arrow 500.

8 is a diagram showing a state in which the tip end portion of the check valve of the injection nozzle with the check valve shown in FIG. 9 is glued to the upper portion of the through passage.

FIG. 9 is a cross-sectional view of a gear pump.

FIG. 10 is a view showing a cross section of a conventional injection nozzle with a check valve.

11 is a diagram showing an outline of the structure of the hand sanitizer shown in FIG.

FIG. 12 is a view showing the external appearance of a conventional automatic finger sterilizer.

[Explanation of symbols]

 10 ... Injection hole 50 ... Through flow path 55 ... Inlet 60 ... Check valve 61 ... Tip part 70 ... Movable nozzle 75 ... upper part of through flow passage 93 ... contact piece 300 ... injection nozzle

Claims (3)

[Claims] 1. A first flow path for a fluid object, a second flow path connected to the first flow path through an inflow port, an injection port for injecting a fluid object flowing into the second flow path, a second flow path A fluid injection device having a blocking valve that is provided inside and is biased so as to close the inflow port when the pressure of the fluid from the first flow path is below a predetermined level. A fluid ejecting apparatus comprising: a blocking valve moving unit that moves in a direction opposite to the urging direction so that an inflow port opens. 2. The fluid ejection device according to claim 1, wherein the first flow path is provided in a first housing, the second flow path is provided in a second housing, and the blocking valve moving means is a first It is provided with a second housing movable in the housing direction and a contact portion provided in the first housing,
The contact portion normally faces the blocking valve in the first flow path, and contacts the blocking valve when the second housing is moved in the first housing direction so as to open the inlet port. A fluid ejecting apparatus comprising: moving in a direction opposite to the urging direction. 3. The fluid ejecting apparatus according to claim 1, wherein the blocking valve moving means includes a moving contact portion provided in the vicinity of the first flow path so as to be movable in the direction of the second flow path. The portion normally faces the blocking valve in the first flow passage, and the blocking valve is provided so that the moving contact portion abuts the blocking valve when the moving contact portion moves in the second flow passage direction to open the inflow port. A fluid ejecting apparatus, comprising: moving in a direction opposite to the direction of force.