JP2015052342A - Fluid jet device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve some problems found in a fluid jet device in which adjustment of pressure adjusting device requires much amount of troublesome work.SOLUTION: This invention relates to a fluid jet device 1 constructed and operated such that a cylinder filled and encapsulated with high pressure fluid is installed at a fixing part of a main body case, jet pressure of jet fluid is adjusted through a pressure adjusting mechanism arranged at the main body case in correspondence with pressure of high pressure fluid and fluid is injected out of a discharging port, the pressure adjusting mechanism 3 has a structure in which it adjusts a pressure adjusting member in advance at the time of assembly of the device main body in such a way that the fluid flow passage may be opened at a fluid pressure of a prescribed range and after this operation, the pressure adjusting member is fixed so as not to be movable and not enabling its pressure to be adjusted and at the same time a switch mechanism for opening or closing a fluid discharging flow passage 2d under operation of the opening or closing members (4, 5, 6) attached to the main body case 2 is installed at the midway part ranging from the pressure adjusting mechanism 3 to a fluid jet discharging port 37 punched at the main body case 2.

Description

  The present invention relates to a fluid ejection device that ejects and supplies a fluid such as high-pressure gas.

  Conventionally, as shown in FIG. 6, as the fluid ejection device 20, a cylinder 21 that mainly stores liquefied carbon dioxide gas as a high-pressure gas is used, and the carbon dioxide gas in the cylinder 21 is regulated and ejected.

  The outline of the fluid ejection device 20 will be described. A cylinder 21 whose upper opening is sealed with a sealing material is screwed to an adapter 22 attached to a lower portion of a body case 26 of the fluid ejection device 20. Then, by the spire body 23a protruding from the cut nozzle 23, the sealing material screwed upward in the figure is automatically broken, and the high-pressure gas in the cylinder 21 enters the inside of the spire body 23a along the axis. It enters into the perforated channel 23b.

  The high-pressure gas further rises to the filter 24 and accumulates in the storage chamber 26a of the main body case 26. Therefore, the needle valve 25 is always pushed upward by a biasing member 25a such as a spring, and the upper taper portion of the needle valve 25 closes the through hole of the rubber packing 27. It does not eject to the flow path 26b.

  An upper end portion of the needle valve 25 is loosely fitted into the main body channel 26b and protrudes thereon. A valve receiver (piston) 28, a coil spring 29, a spring seat 30, and a pressure adjusting screw 31 provided in the upper opening space of the main body case 26 form a pressure adjusting mechanism for high pressure gas.

  When the coil spring 29 pushes down the needle valve 25 through the valve receiver 28, the through hole of the rubber packing 27 and the storage chamber 26a communicate with each other. Then, the high-pressure gas advances to the upper portion, and the high-pressure gas is supplied from the discharge flow path 36 through the discharge port 37 through the discharge hose 38 as indicated by the arrows in the figure.

  In order to adjust the high pressure gas to be supplied at a desired gas pressure by, for example, screwing with a pressure adjusting screw 31 provided in the pressure adjusting knob 34, and to maintain the adjustment state, the fixing member (such as a female screw) 32 It is fixed with. When a high pressure fluid is used, the pressure adjusting knob 34 is rotated in one direction, and the valve receiving plate 28 and the needle valve 25 are pushed down through the coil spring 29 to eject high pressure gas. is there. Such a fluid ejection device is known (see Patent Document 1).

JP 2003-322300 A

  However, in the conventional fluid ejection device 20, the switching of the opening and closing of the flow path by the needle valve 25 needs to be adjusted from the zero pressure state by the coil spring 29 to the set pressure range. Therefore, it is performed by pushing the valve receiving plate 28 linearly downward through the coil spring 29 by the rotation of the pressure adjusting knob 34.

  In this case, the rotation of the pressure adjusting knob 34 also includes variations in the spring constant of the coil spring 29. Considering this, a large rotation angle is required to push and return the needle valve 25 by a certain amount. is necessary. If the rotation of the pressure adjusting knob 34 is not sufficient, there is a possibility that the set pressure is not reached or the pressure is not zero. Further, narrowing the rotation range of the pressure adjusting knob 34 increases the spring constant of the coil spring 29, which is inconvenient if the pressure adjustment accuracy deteriorates. When a two-way valve structure having such a pressure regulating mechanism is used for a general regulator, there is a problem that the overall shape of the regulator device becomes large. Under such circumstances, the fluid ejection device according to the present invention has been proposed in order to solve such a problem.

  The gist for solving the above-mentioned problems of the fluid ejection device according to the present invention is to achieve the object by attaching a cylinder filled and sealed with high-pressure fluid to a mounting portion of a main body case, so that the high-pressure fluid is removed from the cylinder. In the fluid ejection device that regulates the ejection pressure of the ejected fluid through the pressure regulation mechanism provided in the main body case corresponding to the pressure of the fluid, and ejects the fluid from the discharge port, the pressure regulation mechanism is The pressure regulating member is preliminarily regulated at the time of assembling the apparatus main body so that the fluid flow path is opened at a fluid pressure within a predetermined range, and thereafter, the pressure regulating member is fixed so as not to move and the pressure cannot be regulated after assembly. And a switch that opens and closes the fluid discharge passage by an opening / closing operation member attached to the main body case in the middle from the pressure adjusting mechanism portion to the fluid ejection outlet formed in the main body case.構部 is that are provided.

  The pressure adjusting member is a reaction force member that receives one end of the pressure adjusting elastic member, and is a spring seat that is screwed into and retracted from the screw portion of the main body case.

  Further, in the switch mechanism, a rotatable knob mounted on the upper side of the main body case is an opening / closing member, and a spherical body enclosed in a horizontal hole provided in a cylindrical inner wall of the knob and the spherical body An elastic body that urges the knob toward the central axis of the knob, a slidable valve contained in a horizontal hole on the side of the main body case formed at a position facing the horizontal hole of the knob, and the valve from the horizontal hole. It is comprised with the elastic member urged | biased so that it may protrude.

  The valve contained in the lateral hole on the main body case side includes that the shape on the side in contact with the sphere on the knob side is formed in a semicircular shape.

According to the fluid ejection device of the present invention, by making the pressure adjusting mechanism portion a fixed type that does not adjust pressure after assembly of the device, the hole processing for pressure adjustment performed on the pressure adjusting knob becomes unnecessary, and further, the pressure adjusting mechanism portion is adjusted. There is no need to provide a pressure screw, and the manufacturing cost of the knob is reduced. In addition, since the switch mechanism portion is provided on the way from the pressure adjusting mechanism portion to the discharge port, the opening / closing operation by the rotation of the knob required for the switch mechanism portion requires a remarkably smaller rotation angle than the conventional one. Therefore, the operability of the knob is improved.
Furthermore, in the switch mechanism part, due to the contact structure between the semicircular of the valve on the body case side and the spherical body of the detent part on the knob side, the semicircular parts of each other enter the other side beyond the boundary line, The stroke of the valve can be increased accordingly. Therefore, there is an excellent effect that the fluid discharge channel is reliably opened and closed.

It is a longitudinal cross-sectional view of the fluid ejection apparatus 1 which concerns on this invention. It is sectional drawing which expands and shows a closed state in the switch mechanism part of the fluid ejection apparatus 1 of the same invention. It is sectional drawing which expands and shows an open state in the switch mechanism part of the fluid ejection apparatus 1 of the same invention. It is the longitudinal cross-sectional view (A) of the valve | bulb 5 in the same switch mechanism part, and a front view (B). FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, which is a cross-sectional view (A) showing a “closed” state of a discharge flow path, and a cross-sectional view (B) showing an “open” state. It is a characteristic curve figure which shows the relationship between rotation of a knob and the pressure of a spring. It is a longitudinal cross-sectional view of the fluid ejection apparatus 20 which concerns on a prior art example.

  As shown in FIG. 1, the fluid ejection device 1 according to the present invention includes a fixed pressure regulating mechanism 3 and a switch mechanism (valve 5 or the like) between the pressure regulating mechanism 3 and the discharge port 37. This is the one that was added. Hereinafter, the same reference numerals as those in the conventional example are attached to the same components as in the conventional example.

  As shown in FIG. 1, the fluid ejecting apparatus 1 has an attachment portion for attaching a cylinder 21 filled with and filled with a high-pressure fluid such as carbon dioxide to a screw portion engraved in an adapter 22 of the main body case 2. Attach to.

  Corresponding to the pressure of the high-pressure fluid from the cylinder 21, the ejection pressure of the ejection fluid is adjusted through the pressure regulating mechanism 3 provided in the main body case 2, and the fluid is ejected from the discharge port 37. This is a fluid ejection device.

  In this fluid ejection device 1, the cylinder 21 is attached to the main body case 2, the sealing material is broken by the spire body 23 a of the cut nozzle 23, and the high-pressure fluid passes through the filter 23 and passes through the gap between the needle valve 25 and the rubber packing 27. As described above, the structure of jetting from the main body flow path 2b to the upper space portion of the main body case 2 is the same as the conventional example.

  With respect to the upward biasing force by the high-pressure fluid and the biasing member 25a, the degree of protrusion of the upper end portion of the needle valve 25 is adjusted by the piston 3c of the pressing member and the coil spring 3b that exerts the downward biasing force. The pressure regulating mechanism 3 that adjusts the gap between the tapered portion of the needle valve 25 and the rubber packing 27 will be described.

  The pressure regulating mechanism 3 regulates the pressure regulating member in advance when the fluid ejecting apparatus 1 is assembled in order to open the fluid flow path 2b so that the fluid passes through the fluid flow path 2b at a predetermined range of fluid pressure. As shown in FIG. 1, the pressure adjusting mechanism 3 is a spring reaction force member and a spring seat 3 a that is a pressure adjusting member, a coil spring 3 b that is a biasing means, and an upper end portion of a needle valve 25. It is comprised with piston 3c which contacts and pushes this in.

  At the time of assembling the fluid ejection device 1, a fixed pressure fluid is supplied to the main body case 2 instead of the cylinder 21 using a jig or the like. When the pressure is within a desired range, the fluid is ejected upward from the main body flow path 2b, and when the pressure is lower than that, the piston 3c is lowered and the gap between the taper portion of the needle valve 25 and the rubber packing 27 is increased. When the pressure exceeds the desired range, the piston 3c is raised, and the spring seat 3a is connected to the upper opening of the main body so that the gap between the tapered portion of the needle valve 25 and the rubber packing 27 is closed. The screw part engraved on the inside of 2f is screwed or moved backward to adjust the jet pressure of the high-pressure fluid.

  After that, for example, a screw lock is attached and fixed so that the spring seat 3a of the pressure adjusting member does not move, and after the knob 6 is assembled to the main body case 2, a pressure adjusting fixed type structure in which pressure cannot be externally adjusted is obtained. .

  A switch that opens and closes the fluid discharge flow path 2d by an opening / closing operation member attached to the main body case 2 in the middle of the pressure adjusting mechanism 3 to the fluid discharge outlet 37 formed in the main body case 2 A mechanism is provided.

  As shown in FIGS. 1 to 4, the switch mechanism portion includes a rotatable knob 6 mounted on the upper side of the body case 2 as an opening / closing operation member, and a synthetic resin detent ring ( The detent 6a includes a spherical body 4c, an elastic body (spring) 4b that urges the spherical body 4c toward the central axis of the knob, and a lid of the lateral hole 6b. A slidable valve 5 included in a holder 4a, which is a reaction material of the elastic body 4b, and a side hole 2c on the body case 2 side that is formed at a position facing the side hole 6b of the knob 6. And an elastic member (spring) 5a that urges the valve 5 so as to protrude outward from the lateral hole 2c.

  As shown in FIG. 4, the valve 5 enclosed in the horizontal hole 2c on the main body case 2 side is formed in a semicircular shape 5d in the shape of the tip 5c on the side in contact with the sphere on the knob 6 side. .

  In the switch mechanism portion, the semicircular portion of the valve 5 on the main body case 2 side and the spherical body 4c of the detent portion 4 on the knob 6 side make the semicircular portion a boundary portion between the knob and the detent ring 6a. It is possible to increase the stroke, which is the amount of movement that moves in and out of the valve 5 by that amount.

  As shown in FIG. 5-A, the knob 6 opens and closes the discharge flow path 2d of the main body case 2, for example, when viewed from above, the state shown in FIG. 2d is a “closed” state. Further, the state shown in FIG. 5A (B) is a state in which the discharge flow path 2d is “open”. The rotation angle (θ) of the knob 6 is a small rotation of about 30 ° to 60 °, for example.

  When transitioning from the “closed” state to the “open” state, as shown in FIG. 5A, the sphere 4c falls into the dish-like locking recess 2h provided on the main body case 2 side, while the tip of the valve 5 Since the portion 5c falls into the locking recess 6c provided on the knob 6 side, a click feeling is obtained.

  Contrary to the above, when the state shifts from the “open” state to the “closed” state, the spring 4b of the detent portion 4 overcomes the spring 5a on the valve 5 side and the urging force of the high-pressure fluid, and a part of the sphere 4c becomes part of the valve 5 Is pushed inward to enter the lateral hole 2c on the main body ace 2 side. This gives a click feeling.

  In this way, the switch mechanism can be reliably turned on and off by a small rotation in the forward and reverse directions of the knob 6. Further, by providing the fixed pressure regulating mechanism 3, the spring constant of the coil spring 3b is pushed down against the urging force of the urging member 25a of the needle valve 25 in the absence of fluid pressure. What is necessary is just to make it the urging | biasing force which is an urging | biasing force and the piston 3c is lifted and retracts when the pressure of the fluid is higher than a desired pressure regulation range.

  Therefore, conventionally, the spring constant of the coil spring 29 is increased by adjusting the pressure within a wide range from zero pressure to the set pressure. However, in the pressure regulating mechanism portion 3 of the fluid ejection device 1 according to the present invention, the pressure regulation of the coil spring 3b is performed. The range can be reduced to a smaller spring constant. As a result, as shown in FIG. 5B, the error due to the rotation of the knob or the spring seat is reduced at the spring constant B, which is smaller than the conventional spring constant A, during the pressure adjustment work. The pressure regulation accuracy is improved and the work efficiency is improved.

  A method of using the fluid ejection device 1 provided with the pressure regulating mechanism 3 and the switch mechanism (valve 5 and detent 4) will be described. First, when the cylinder 21 is attached to the fluid ejection device 1, the seal material that closes the opening of the cylinder 21 is broken by the spire body 23a of the cut nozzle 23, and the high-pressure fluid enters the flow path 23b. Furthermore, it reaches the space on the back surface of the valve 5 in the lateral hole 2c via the storage chamber 2a, the main body flow path 2b, and the flow path 2g.

  In the switch mechanism portion, as shown in FIG. 2, since the biasing force of the spring 4b of the detent portion 4 is stronger than the total biasing force of the spring 5a and the fluid pressure, the valve 5 is pushed inward by being pushed by the spherical body 4c. The discharge channel 2d is blocked by being pushed in.

  Next, when the knob 6 is rotated by θ in order to make it ready for use, the valve 5 advances to the right (outside) in the drawing as shown in FIG. 5-A (A) to FIG. 5-A (B). To do. Then, the discharge flow path 2d that has been blocked by the valve 5 communicates with the flow path 2g.

  Thus, as shown in FIG. 3, the high-pressure fluid reaches the discharge channel 2d and is discharged from the discharge port 37 to the ejection hose 38 as shown in FIG. When the pressure of the high-pressure fluid is higher than a predetermined range, the piston 3c is pushed up against the biasing force of the coil spring 3b, and the needle valve 25 is pushed up by the biasing member 25a. As a result, the gap between the tapered portion of the needle valve 25 and the rubber packing 27 is closed, and the ejection of the high-pressure fluid is stopped. As a result, the pressure of the high-pressure fluid reaching the valve 5 is adjusted within a desired range.

  As described above, the fluid ejecting apparatus 1 according to the present invention is provided with the fixed pressure regulating mechanism 3 and the switch mechanism, so that the fluid can be easily turned on and off. .

  The fluid ejection device 1 according to the present invention can be applied to various high-pressure fluids, and can be widely applied to a facial device using the fluid and other known ejection devices.

1 fluid ejection device,
2 body case, 2a storage chamber,
2b body channel, 2c side hole,
2d discharge channel, 2e channel lid,
2f Main body upper opening, 2g flow path,
2h Locking recess,
3 pressure regulating mechanism, 3a spring seat,
3b coil spring, 3c piston,
4 detent part, 4a holder,
4b Spring, 4c Sphere (ball),
5 Valve, 5a Spring,
5b O-ring, 5c tip,
5d semicircular,
6 knob, 6a detent ring,
6b lateral hole, 6c locking recess,
20 fluid ejection device,
21 Cylinder,
22 adapter,
23 cut nozzle, 23a spire body,
23b flow path,
24 filters,
25 needle valve, 25a biasing member,
26 body case, 26a storage chamber,
26b body channel,
27 Rubber packing,
28 Valve backing plate (piston),
29 Coil spring,
30 Spring seat,
31 Pressure adjusting screw,
32 fixing member,
33 fixing holes,
34 Pressure adjustment knob,
35 detent assembly, 35a ball,
35b spring, 35c holder,
36 discharge channel,
37 Discharge port,
38 Hose for ejection.

Claims (4)

By mounting a cylinder filled and sealed with a high-pressure fluid on a mounting portion of the main body case, the ejected fluid is transferred from the cylinder via a pressure adjusting mechanism portion provided in the main body case corresponding to the pressure of the high-pressure fluid. In the fluid ejection device that regulates the ejection pressure of
After the assembly, the pressure regulating mechanism adjusts the pressure regulating member in advance during assembly of the apparatus main body so that the fluid flow path is opened at a fluid pressure within a predetermined range, and then is fixed so that the pressure regulating member does not move. The structure cannot be adjusted,
A switch mechanism for opening and closing a fluid discharge channel by an opening and closing operation member attached to the main body case is provided in the middle of the pressure adjusting mechanism from the fluid ejection outlet formed in the main body case. Being
A fluid ejection device characterized by the above. The pressure adjusting member is a reaction force member that receives one end portion of the elastic member for pressure adjustment, and is a spring seat that is screwed into the screw portion of the main body case to advance and retreat,
The fluid ejection device according to claim 1. In the switch mechanism, a rotatable knob mounted on the upper side of the main body case is an opening / closing member, and a sphere contained in a horizontal hole provided in a cylindrical inner wall of the knob, and the sphere is centered on the knob. An elastic body biasing toward the shaft, a slidable valve contained in a lateral hole on the body case side formed at a position facing the lateral hole of the knob, and the valve protruding from the lateral hole An elastic member that biases
The fluid ejection device according to claim 1, wherein: The valve enclosed in the side hole on the main body case side is formed in a semicircular shape on the side in contact with the sphere on the knob side,
The fluid ejection device according to claim 3.

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