WO2006073143A1

WO2006073143A1 - Fluid pressure adjuster and apparatus using same

Info

Publication number: WO2006073143A1
Application number: PCT/JP2006/300001
Authority: WO
Inventors: Gunji Norinobu
Original assignee: Gunji Norinobu
Priority date: 2005-01-05
Filing date: 2006-01-03
Publication date: 2006-07-13
Also published as: JP2008076050A

Abstract

[PROBLEMS] To prevent application of an excessive pressure on a downstream side. [MEANS FOR SOLVING PROBLEMS] A fluid pressure adjuster (19) is attached at an intermediate section of an air flow path for adjusting a pressure on the downstream side of the intermediate section to be reduced from that on the upstream side. The fluid pressure adjuster is provided with a relay path (21) attached at the intermediate section to relay air from the upstream side to the downstream side; a flow volume reducing means (11) for reducing a flow volume of the air in the relay path (21); and an air outlet hole (14) provided on the downstream side of the flowvolume reducing means (11) in the relay path (21) for communicating inside and outside the relay path (21). The air flow can be controlled by covering the air outlet hole with a finger (9) against the air pressure to suppress or stop the air flowing out from the hole (14) , and by removing the finger (9) from the air outlet hole (14) to release the air from the hole.

Description

Specification

Fluid pressure regulator and device using the same

Technical field

[0001] The present invention is provided in a middle portion of a fluid flow path, and uses a fluid pressure regulator for adjusting the downstream pressure to decrease relative to the upstream side in the middle portion and the same It relates to the device. Background art

[0002] As a background art, a pressure inspection facility as a leak down tester for performing a water leak inspection of a radiator, and a pressure regulator provided therein are exemplified. As shown in FIG. 1, this type of equipment includes a compressor 1 as an air supply source, a pressure regulator 2 that regulates the pressure of air as a fluid delivered from the compressor 1, and a pressure regulator 2 A valve 3 that opens and closes the passage of the air to be sent out, and a pressure gauge 4 that measures the pressure of the air sent through the valve 3, and the air sent through the pressure gauge 4 is a hose It is configured to be connected to the overflow pipe 6 of the radiator 5 via

[0003] The pressure regulator 2 automatically executes a series of inspection operations such as supply pressure, pressure measurement, and determination of non-defective product by sequence control as in the control panel described in Patent Document 1, for example. There is something that is configured to display the results. Widely used in automobile repair shops, the pressure of air sent from the compressor 1 is about IMPa, while the pressure resistance of the radiator 5 is about 0.2 MPa at most, so the air sent from the compressor 1 is sent to the radiator 5 Direct injection may damage the radiator 5 and a pressure regulator 2 is provided to reduce the pressure of the air.

[0004] Patent Document 1: Japanese Patent Laid-Open No. 10-38745

Disclosure of the invention

Problems to be solved by the invention

[0005] However, the conventional pressure regulator 2 and the pressurization inspection equipment using the pressure regulator 2 are configured to automatically perform pressure adjustment in a series of inspection operations, and thus have the following problems. (a) The number of parts increases, which increases costs and easily breaks down.

(b) The weight increases, and as a result, it is often configured as a fixed type and lacks mobility.

Means for solving the problem

[0006] In order to solve the above problem, the fluid pressure regulator of the present invention is interposed in the middle part of the fluid flow path so that the pressure on the downstream side is reduced relative to the upstream side in the middle part. A fluid pressure regulator for regulating,

A relay path interposed in the middle portion and relaying the fluid from the upstream side to the downstream side;

Flow rate reducing means for reducing the flow rate of the fluid in the relay path;

Provided on the downstream side of the flow rate reducing means in the relay path, and a through hole communicating the inside and outside of the relay path,

The fluid can be suppressed or stopped by manually pressing the fluid against the pressure of the fluid, and the fluid can be discharged from the punched hole by releasing the hand. The flow is configured to be controllable.

[0007] The relay path is not particularly limited, but the following mode is exemplified.

(1) A mode in which a flow path for relaying the fluid is provided inside the cylinder.

(2) A mode in which a flow path for relaying the fluid is provided inside a main body formed in an arbitrary shape such as a gun.

[0008] Further, all or a part of the relay path may be configured as a fixed type that is fixed to a building, furniture, airframe, or the like, configured as a detachable type that can be attached to and detached from the building, etc. For example, it can be configured as a hand-held rod type, gun type, or the like.

[0009] The relay path may be provided with a valve upstream of the punched hole.

[0010] The fluid is not particularly limited as long as it freely deforms or flows with respect to an external force. Examples of the fluid include air, a gas such as gas, and a liquid such as fresh water and seawater.

The flow rate reducing means is not particularly limited as long as it reduces the flow rate, but an example of reducing the flow rate by restricting the flow of fluid is illustrated.

[0012] The aspect of the controllable configuration of the fluid flow in the punch hole is particularly limited. Although not specified, the following embodiment is illustrated.

(1) A mode in which the punched hole has an opening that can be directly opened and closed by hand.

(2) A mode in which the punched hole has an opening that can be opened and closed indirectly by hand. For example, the manual opening / closing means configured to suppress or stop the outflow of the fluid by holding it against the pressure of the fluid and to release the fluid by releasing the hand powerfully is described above. The aspect provided in the opening of the punched hole is mentioned. Examples of the manual opening / closing means include a lid provided at the opening of the punched hole outside the relay path so as to be openable.

[0013] The hand is not particularly limited, and examples thereof include a finger, a palm, and a back.

[0014] According to the fluid pressure regulator configured as described above, the following effects can be obtained.

(a) Since the pressure of the fluid can be adjusted while feeling the pressure of the fluid by hand, it is possible to prevent an excessive pressure from being applied to the downstream side. In addition, there is a limit to the pressure of the fluid that can be held while the punched hole is closed by the force of the hand, and when the limit pressure is reached, the hand is pushed back and the fluid flows from the punched hole. Is released and prevents further pressure build-up!

(b) Since the structure is simple and can be configured with a small number of parts, it can be configured to be lightweight and can be portable, improving mobility, improving reliability, and providing at low cost.

[0015] Further, the leak-down tester of the present invention,

It is interposed in the middle of the fluid flow path between the high-pressure fluid supply means for supplying the pressurized fluid and the test object into which the fluid is injected, and detects the leakage of the fluid due to the test object force. A leak-down tester,

The fluid pressure regulator, wherein the relay path is interposed in the middle portion, and the upstream side of the relay path is connected to the high-pressure fluid supply means;

A check valve provided on the downstream side of the fluid pressure regulator in the relay passage to prevent backflow of the fluid;

A pressure measuring means provided on a downstream side of the check valve in the relay path, and measuring a pressure of the fluid injected into the object to be inspected;

It has.

[0016] The high-pressure fluid supply means includes an air conditioner that supplies high-pressure air as a high-pressure fluid. Examples include a lesser and a pump for supplying a high-pressure liquid as a high-pressure fluid.

[0017] The check valve is not particularly limited as long as it allows fluid flow from the upstream side to the downstream side and prevents the reverse flow, but it is not limited to a bicycle tire tube valve (tire). It is attached to the air inlet of the tube and allows compressed air to flow into the tire tube and prevents its backflow). As this noreb, a valve having an insect rubber as a valve is exemplified.

[0018] The pressure measuring means is not particularly limited, but in addition to a pressure gauge, deformation (for example, expansion, bending, expansion and contraction), change, movement, power generation, reaction, etc. according to the pressure of the fluid. Examples of members or substances to be performed are illustrated.

[0019] According to the leak-down tester configured as described above,

(a) Since the fluid flow is adjusted while manually detecting the pressure of the fluid injected into the object to be inspected, it is possible to prevent excessive pressure from being applied to the object to be inspected. The damage can be prevented from being damaged. In addition, there is a limit to the pressure of the fluid that can be held with the force of the hand closed with the force of the hand, and when the pressure reaches the limit, the hand is pushed back, and the fluid flows from the hole. It is released and prevents further pressure buildup.

[0020] As the leak down tester,

The pressure measuring means and the check valve are integrally configured to be detachable from the main body of the relay path, and a low-pressure fluid is introduced into the upstream side opening of the check valve exposed by removing the main body force of the relay path. The aspect comprised so that a supply means was connectable is illustrated.

[0021] As the leak down tester,

The fluid pressure regulator is configured to be detachable from the high-pressure fluid supply means, and the fluid pressure regulator is configured to connect a low-pressure fluid supply means for supplying a low-pressure fluid to the hole. Is illustrated.

[0022] As the leak down tester,

A valve is provided on the upstream side of the hole in the relay path, and the relay path And at least the upstream side of the valve is configured to be detachable from the high-pressure fluid supply means force,

The said fluid pressure regulator illustrates the aspect comprised so that the low pressure fluid supply means which supplies a low pressure fluid was connectable to the said punch hole.

[0023] As the leak down tester,

Provided on the downstream side of the check valve in the relay path is a second check valve that allows the flow of fluid from the outside to the inside of the relay path and prevents the reverse flow, and the second check valve An example in which the low-pressure fluid supply means is connectable to the outer opening of FIG.

[0024] The low-pressure fluid supply means is not particularly limited, but is a fluid supply means configured to be driven by human power or low power (for example, air in a hollow body such as a bicycle tire, a ball, and a floating ring). For example, a pump for putting

[0025] According to the leak down tester configured as described above, the fluid can be injected into the object to be inspected using the low pressure fluid supply means even in a place where the high pressure fluid supply means is not available. it can.

[0026] The jack of the present invention is

The fluid pressure regulator is provided in the middle of the fluid flow path between the high pressure fluid supply means for supplying the pressurized fluid and the expansion / contraction body that expands when the fluid is injected and contracts when the fluid is discharged. The object is lifted by the stretchable body that is interposed and extended.

[0027] Further, the fluid ejection device of the present invention comprises:

The fluid pressure regulator is interposed in the middle of the fluid flow path between the high-pressure fluid supply means for supplying the pressurized fluid and the nozzle for ejecting the fluid.

[0028] Further, the spraying device (or coating device) of the present invention comprises:

A high-pressure gas supply means for supplying a pressurized gas, a liquid supply means for supplying a liquid, and a nozzle for spraying the liquid together with the gas using the pressure of the gas, and the flow of the pressurized gas The fluid pressure regulator is interposed in the middle of the path. [0029] The jack, the fluid ejection device, the spraying device, or the coating device of the present invention configured as described above can achieve the same effects as the fluid pressure adjusting device.

The invention's effect

[0030] According to the fluid pressure regulator and the apparatus using the same according to the present invention, it is possible to prevent an excessive pressure from being applied to the downstream side, improve portability, improve mobility, and improve reliability. Or can be provided at low cost.

Brief Description of Drawings

FIG. 1 is a perspective view showing a conventional technique.

FIG. 2 is a perspective view showing a fluid pressure regulator and a leak down tester using the fluid pressure regulator according to the first embodiment embodying the present invention.

FIG. 3 is a sectional view of the same embodiment.

FIG. 4 is a perspective view in which the main body and the distal end portion of the embodiment are separated.

FIG. 5 is a perspective view showing the assembly method of the same embodiment.

FIG. 6 is a perspective view of a structure in which a flow rate adjusting screw is attached to the plug of the embodiment.

FIG. 7 is a cross-sectional view showing another method of using the fluid pressure regulator and the leak down tester using the fluid pressure regulator according to the embodiment.

FIG. 8 is a perspective view showing a fluid pressure regulator and a leak down tester using the fluid pressure regulator according to a second embodiment embodying the present invention.

FIG. 9 is a perspective view showing a fluid pressure regulator and a leak down tester using the fluid pressure regulator according to a third embodiment of the present invention.

FIG. 10 is a perspective view showing a fluid pressure regulator and a leak down tester using the fluid pressure regulator according to a fourth embodiment embodying the present invention.

FIG. 11 is a perspective view showing a fluid pressure regulator and a jack using the fluid pressure regulator according to a fifth embodiment embodying the present invention.

FIG. 12 is a perspective view showing a fluid pressure regulator and a fluid ejection device using the fluid pressure regulator according to a sixth embodiment embodying the present invention.

FIG. 13 is a perspective view showing a fluid pressure regulator and a spraying device (or coating device) using the fluid pressure regulator according to a seventh embodiment embodying the present invention. Explanation of symbols

1 Compressor

2 Conventional pressure regulator

3 Valve

4 Pressure gauge

5 Radiator

6 Overflow pipe

7 Radiator cap

8 Body

9 fingers

10 plug

11 Flow rate adjusting screw

12 Open / close valve

13 Check valve

14 Hole

15 Rubber tube

16 Flow rate adjusting screw holder

17 Screws with sharp edges

19 Fluid pressure regulator

20 Leakdown tester

21 junction

22 Pump

23 nozzles

25 cylinders

26 Piston

27 Gasket

28 cylinder head

29 Intake valve 30 Exhaust valve

31 Screw holes

32 Air insertion bracket

41 Valve

50

51 Elastic body

60 Fluid ejection device

61 nozzles

70 Spraying equipment

71 Liquid supply means

72 nozzles

73 containers

BEST MODE FOR CARRYING OUT THE INVENTION

2 to 7 show a fluid pressure regulator 19 and a leak-down tester 20 using the fluid pressure regulator 19 as a first embodiment embodying the present invention. As shown in the cross-sectional view of FIG. 3, the leak down tester 20 is interposed in the middle of a flow path of air as a fluid, and has an air gun having a relay path 21 that relays the air from the upstream side to the downstream side. In order to send air into the pressure gauge 4 as a pressure measuring means at the tip of the air gun, the check valve 13 at the inlet side of the pressure gauge 4, and the radiator 5 as an object to be inspected at the outlet side A pair with a rubber tube 15 attached is incorporated. This incorporation is performed by screwing so that the check valve 13 enters the inside of the tip of the air gun. A vent hole 14 is provided between the air gun open / close valve 12 and the check valve 13 of the pressure gauge 4. The relative positions of the lever of the open / close valve 12 and the punch hole 14 are set so that they are difficult to operate with only one hand. This allows the user to operate the leak-down tester 20 with both hands, and prevents the user from approaching the empty hand, face, or other body to the radiator as the object to be inspected. A female screw as a flow rate adjusting screw receiver 16 is screwed into the downstream side opening of the air flow path in the plug 10, and the flow rate adjusting screw 11 is screwed into the flow rate adjusting screw receiver 16. The flow adjustment screw 11 Therefore, the deeper it is screwed into the flow rate adjusting screw receiver 16, the more the air flow is restricted. A perspective view of the plug 10 and the flow rate adjusting screw 11 is shown in FIG. In this way, the flow rate of the air flowing in from the compressor 1 can be adjusted by adjusting the screwing amount of the flow rate adjusting screw 11 with respect to the flow rate adjusting screw receiver 16, and the compressor 1 as a high pressure fluid supply means can be adjusted. The inflowing air can be throttled to a very weak level with the flow adjustment screw 11 of the plug 10. The flow rate adjusting screw receiver 16 and the flow rate adjusting screw 11 are an inflow adjusting valve as a flow rate reducing means for restricting the air flow.

[0034] Here, the relay path 21, the inflow regulating valve as the flow rate adjusting means, and the vent hole 14 are interposed in the middle of the flow path of the air as the fluid, and upstream of the middle section. On the other hand, a fluid pressure regulator 19 for adjusting the downstream air pressure to decrease. This fluid pressure regulator 19 can suppress or stop the outflow of air from the hole 14 by holding it against the air pressure by hand, and can release the air from the hole 14 by releasing the hand. The air flow is configured to be controllable.

[0035] Next, a method for using the leak down tester 20 according to the present invention will be described. First, the rubber tube 15 of the air gun of the present invention is inserted into the radiator 5, and the compressor hose is connected to the plug 10. Next, Compressor 1 is operated, and when the lever of the air gun open / close valve 12 is grasped with one hand, all the air flowing to the tip is also released. At this time, since a noise is heard from the punch hole 14, it can be confirmed that air is leaking from the punch hole 14. Next, when the weak air flow is blocked by the finger 9 of the other hand, pressure is generated inside the air gun, and pressure is applied to the radiator 5 through the check valve 13 and the rubber tube 15. Until the pressure inside the radiator 5 reaches the desired pressure, hold the lever of the open / close valve 12 with one hand and use the finger 9 of the other hand to close or open the hole 14 to the radiator. Adjust the air pressure. When the pressure inside the radiator 5 reaches a desired pressure, the finger 9 of the other hand is released from the hole 14 and then one hand is released from the lever of the opening / closing valve 12. In this way, even if the lever of the open / close valve 12 of the air gun is held, the high pressure of the compressor 1 is not applied to the radiator 5 in a safe structure. The amount of air inside the air gun is reduced to a very low level, and the increase in the pressure of the weak flow is gently sent to the rubber tube 15 while checking the pressure gauge 4, Arbitrary pressure is applied to the radiator 5. The air sent to the radiator 5 is maintained by the action of the check valve 13 at the inlet of the pressure gauge 4 even if the lever of the opening / closing valve 12 and the release hole 14 are released.

[0036] As shown in the perspective view of FIG. 4, when the compressor 1 cannot be used, the pressure gauge 4, the check valve 13, and the rubber tube 15 are paired so that the force at the tip of the air gun can be removed. You can also. At the same time, by using a bicycle valve (for example, a valve having rubber rubber) as the check valve 13, the bicycle pump 22 (pump that puts air into the tire tube) as a low-pressure fluid supply means to the valve is used. The nozzle 23 can be connected. As a result, even if the compressor 1 as a high-pressure fluid supply means is not provided, the radiator 5 can be pressurized by the bicycle pump 22 alone.

[0037] Further, in order to inspect whether there is a failure in the leak down tester 20, a test container capable of injecting air only into the connection port force is used. The rubber tube 15 of the leak down tester 20 is connected to the connection port of this test container, and the leak down tester 20 is operated in the same manner as the pressure test of the radiator 5. Since the test container force does not leak air, when the pressure gauge 4 can confirm that the pressure of the air sent to the test container is not maintained when the lever of the open / close valve 12 and the release hole 14 are released, It can be seen that the leak down tester 20 has failed. The test container may be provided with a second connection port that is sealed or covered. When this seal or lid is opened, the second connection port and the overflow pipe 6 of the radiator 5 are connected by a hose such as a rubber tube, and the rubber tube 15 is connected to the connection port. The container can also be used as an air relaxation container.

FIG. 7 shows a method of using the leak down tester 20 of the present invention for leak inspection in the cylinder 25 of the engine as an object to be inspected. Leakage in the cylinder 25 of the engine of this example occurs between the cylinder 25 and the piston 26, between the cylinder 25, the gasket 27, and the cylinder head 28, and the clearance force generated in the intake valve 29, the exhaust valve 30, etc. . The default value of the compression pressure in the cylinder 25 of the engine is about IMPa, and the pressure of the air injected into the cylinder 25 to know the leakage in the cylinder 25 is about 0.1 to 0.14 MPa. It is sufficiently obtained by the leak-down tester 20 of the invention. In this case, the leak-down tester 20 has a spark plug screw hole at the tip of its rubber tube 15. Install the air insertion bracket 32 that can be screwed onto 31. Then, insert the air insertion bracket 32 into the screw hole 31 of the spark plug communicating with the cylinder 25, and inject air into the cylinder 25 while checking with the pressure gauge 4 so that the inside of the cylinder 25 becomes a predetermined pressure. . Then, after a predetermined time has passed with the leak down tester 20 attached, the pressure drop in the cylinder 25 is measured by the pressure gauge 4 to measure the leak condition in the cylinder 25. The degree of fatigue can be judged. Generally, in order to know the degree of engine fatigue, a compression gauge is attached and the compression pressure of the engine is measured and compared with the default value to determine the degree of leakage in the cylinder 25. This work is done while turning the cell. The compression gauge needs to be at the maximum pressure, and there are two workers who turn the cell and two workers who look at the compression gauge. According to the present invention, one worker can handle it.

According to the fluid pressure regulator 19 of the present embodiment configured as described above, the following effects can be obtained.

(a) Since the pressure of the air can be adjusted while feeling the pressure of the air by hand, it is possible to prevent an excessive pressure from being applied to the downstream side of the fluid pressure regulator 19. In addition, there is a limit to the pressure of air that can hold the punch hole 14 closed with the force of the hand, and when the limit pressure is reached, the hand is pushed back and air is released from the punch hole 14. It will prevent the pressure from rising further!

[0040] Further, according to the leak down tester 20 of the present embodiment, simply inserting the rubber tube 15 of the air gun of the present invention into the radiator 5, connecting a compressor hose to the plug 10, and grasping the lever of the opening / closing valve 12 only causes the radiator. No pressure is applied to 5 and the air that weakly pierces through the air is blocked with fingers 9, so that an arbitrary inspection pressure can be obtained at radiator 5 while confirming a moderately strong pressure rise with pressure gauge 4.

[0041] And the present invention is not only for checking the pressure of the radiator 5 but also for feeding the pressure into the radiator 5 by the rubber pipe 15 at the outlet of the present invention by the overflow pipe 6 next to the radiator 5 water inlet. Remove the radiator 5 and measure the change in internal pressure. By checking the sound of the internal pressure that is blown when the top 7 is opened and the swelling of the radiator hose, it is possible to judge whether the holding power of the water inlet and the cap 7 attached thereto is good or bad.

[0042] Thus, according to the leak down tester 20 embodying the present invention, it becomes possible to perform a water leak inspection of the radiator 5 in the same manner as an air tool at an automobile maintenance shop. Even when there is no pressure, a low-pressure bicycle pump 22 that is widely used can be used for pressure testing.

Therefore, according to the leak down tester 20 of the present embodiment, the following effects can be obtained.

(a) Since the air flow is adjusted while detecting the pressure of the air injected into the radiator 5 by hand, it is possible to prevent the radiator 5 from being charged with excessive pressure. Can be prevented from being damaged. In addition, there is a limit to the pressure of air that can be held with the punch hole 14 closed by hand force, and when the limit pressure is reached, the hand is pushed back and air is released from the punch hole 14, Further increase in pressure is prevented.

Next, FIG. 8 shows a second embodiment that embodies the present invention. The fluid pressure regulator 19 and the leak-down tester 20 using the fluid pressure regulator 19 are mainly different from the first embodiment in the following points. Accordingly, parts that are the same as in the embodiment are given the same reference numerals, and redundant description is omitted (hereinafter the same applies to other embodiments). O

In this leak down tester 20, an air gun opening / closing valve 12 is provided on the upstream side of the hole 14 in the relay path 21, and the plug 10 on the upstream side of the opening / closing valve 12 in the relay path 21 is connected to the compressor. The fluid pressure regulator 19 is similar to the first embodiment in that it is configured to be detachable from the compressor hose 1, but the fluid pressure regulator 19 has a hole in the bicycle pump 22 as a low-pressure fluid supply means for supplying low-pressure air. 14 is configured to be connectable. Even with this configuration, the compressor 1 as a high-pressure fluid supply means is not provided, and the fluid can be injected into the object to be inspected by using the bicycle pump 22 even in a place.

[0046] It should be noted that the leak down tester 20 has a valve on the upstream side of the through hole 14 in the relay path 21. Even if the fluid pressure regulator 19 is not provided, the fluid pressure regulator 19 is configured to connect the bicycle pump 22 as a low-pressure fluid supply means for supplying low-pressure air to the bore hole 14 and to adjust the inflow as a flow rate adjustment means. By closing the valve, the bicycle pump 22 can be used to pour fluid into the object to be inspected even in places where the compressor 1 is not used as a high-pressure fluid supply means.

[0047] According to this example, in addition to the same effect as that of the first embodiment, an effect peculiar to the above example can be obtained.

Next, FIG. 9 shows a third embodiment that embodies the present invention. The fluid pressure regulator 19 and the leak down tester 20 using the fluid pressure regulator 19 are mainly different from the first embodiment in the following points.

[0049] In this leak down tester 20, the second check that allows the flow of fluid from the outside to the inside of the relay path 21 on the downstream side of the check valve 13 in the relay path 21 and prevents the backflow. A second bicycle nore is provided as the valve 13, and a bicycle pump 22 as a low pressure fluid supply means is connectable to an outer opening of the second check valve 13. Also with this configuration, fluid can be injected into the object to be inspected using the bicycle pump 22 even in a place where the compressor 1 as high-pressure fluid supply means is not provided.

[0050] According to this example, in addition to the same effects as those of the first embodiment, it is possible to obtain the effects specific to this example.

Next, FIG. 10 shows a fourth embodiment that embodies the present invention. The fluid pressure regulator 19 and the leak down tester 20 using the fluid pressure regulator 19 are mainly different from the first embodiment in the following points.

The relay path 21 is provided with a flow path for relaying fluid inside the cylinder. Further, in this example, the relay path 21 can be configured as a detachable type that can be attached to and detached from a building or furniture that is fixed to a building, furniture, airframe, or the like, or a handheld type.

[0053] As the flow rate reducing means in the fluid pressure regulator 19, a valve 41 configured to be capable of adjusting the flow rate with a lever is provided instead of the inflow regulating valve in the first embodiment. Unlike the first embodiment, the on-off valve 12 is not provided.

[0054] According to this example, in addition to the same effect as that of the first embodiment, an effect peculiar to the above example can be obtained. Togashi.

Next, FIG. 11 shows a fifth embodiment that embodies the present invention. The fluid pressure regulator 19 and the jack 50 using the fluid pressure regulator 19 are mainly different from the fourth embodiment in the following points.

[0056] The jack 50 of the present invention includes a compressor 1 as a high-pressure fluid supply means for supplying a pressurized fluid, and a stretchable body 51 that expands when the fluid is injected and contracts when the fluid is discharged. A fluid pressure regulator 19 is interposed in the middle of the fluid flow path between the two, and is configured to lift the object by the extending and contracting body 51. Unlike the fourth embodiment, the pressure gauge 4 is not provided. In this example, the stretchable body 51 is formed of a hollow body having a stretchable bellows.

[0057] According to this example, the same effect as the fluid pressure regulator 19 of the first embodiment can be obtained.

Next, FIG. 12 shows a sixth embodiment that embodies the present invention. The fluid pressure regulator 19 and the fluid ejection device 60 using the fluid pressure regulator 19 are mainly different from the first embodiment in the following points.

[0059] The fluid ejection device 60 of the present invention has a fluid pressure in the middle of the fluid flow path between the compressor 1 as a high pressure fluid supply means for supplying pressurized fluid and the nozzle 61 for ejecting the fluid. The adjuster 19 is installed. Unlike the first embodiment, the check valve 13 and the pressure gauge 4 are provided.

[0060] According to this example, the same effect as the fluid pressure regulator 19 of the first embodiment can be obtained.

Next, FIG. 13 shows a seventh embodiment that embodies the present invention. The fluid pressure regulator 19 and the spray device 70 (or coating device) using the fluid pressure regulator 19 are mainly different from the first embodiment in the following points.

[0062] The spraying device 70 (or coating device) of the present invention uses the compressor 1 as high-pressure gas supply means for supplying pressurized gas, the liquid supply means 71 for supplying liquid, and the pressure of the gas. And a nozzle 72 for spraying the liquid together with the gas, and a fluid pressure regulator 19 is interposed in the middle of the flow path of the pressurized gas. In this example, the liquid supply means 71 has a container 73 provided in front of the nozzle opening of the nozzle 72, and is configured such that the liquid placed in the container 73 is sucked out together with the gas by the bench lily effect. It is. Unlike the first embodiment, the check valve 13 and the pressure gauge 4 are not provided.

[0063] According to this example, the same effect as the fluid pressure regulator 19 of the first embodiment can be obtained.

It should be noted that the present invention is not limited to the above-described embodiment. For example, as described below, the present invention can be modified as appropriate without departing from the spirit of the invention.

(1) The position of the hole 14 is not limited as long as it is between the check valve 13 and the open / close valve 12.

(2) The hole 14 should have an opening that can be opened and closed indirectly by hand. For example, a lid as a manual opening / closing means configured to suppress or stop the outflow of the fluid by holding it against the pressure of the fluid and to release the fluid by releasing the hand is removed. An embodiment provided in the opening of the hole 14 is exemplified.

Claims

The scope of the claims

[1] A fluid pressure regulator that is interposed in the middle of the fluid flow path and adjusts so that the pressure on the downstream side is reduced relative to the upstream side in the middle portion,

The fluid can be suppressed or stopped by manually pressing the fluid against the pressure of the fluid, and the fluid can be discharged from the punched hole by releasing the hand. Fluid pressure regulator configured to control the flow of the fluid.

[2] A fluid leakage between the high-pressure fluid supply means for supplying a pressurized fluid and an inspection object into which the fluid is injected is interposed in the middle of the fluid flow path. A leak-down tester for detecting

2. The fluid pressure regulator according to claim 1, wherein the relay path is interposed in the middle portion, and the upstream side of the relay path is connected to the high-pressure fluid supply unit;

Leak-down tester with

[3] The pressure measuring means and the check valve are integrally configured to be detachable from the main body of the relay path, and the upstream opening of the check valve exposed by removing the main body force of the relay path The leak down tester according to claim 2, wherein the low pressure fluid supply means can be connected to the leak down tester.

[4] The fluid pressure regulator is configured to be detachable from the high-pressure fluid supply means, and the fluid pressure regulator is configured to connect a low-pressure fluid supply means for supplying a low-pressure fluid to the hole. The leak-down tester according to claim 2.

[5] A valve is provided on the upstream side of the through hole in the relay path, and at least the upstream side of the valve in the relay path is configured to be detachable from the high-pressure fluid supply means.

3. The leak down tester according to claim 2, wherein the fluid pressure regulator is configured so that a low pressure fluid supply means for supplying a low pressure fluid can be connected to the punched hole.

[6] A second check valve is provided on the downstream side of the check valve in the relay path to allow the flow of fluid from the outside to the inside of the relay path and prevent the backflow. 3. The leak down tester according to claim 2, wherein the low pressure fluid supply means can be connected to an outer opening of the check valve.

[7] In the middle part of the fluid flow path between the high-pressure fluid supply means for supplying the pressurized fluid and the expansion / contraction body that expands when the fluid is injected and contracts when the fluid is discharged. A jack configured to lift an object by the expanding and contracting body including the fluid pressure regulator described above.

[8] The fluid pressure regulator according to claim 1 is interposed in the middle of the fluid flow path between the high-pressure fluid supply means for supplying the pressurized fluid and the nozzle for ejecting the fluid. Fluid ejection device.

[9] A high-pressure gas supply unit that supplies pressurized gas, a liquid supply unit that supplies liquid, and a nozzle that sprays the liquid together with the gas using the pressure of the gas, A spraying device comprising the fluid pressure regulator according to claim 1 interposed in the middle of a gas flow path.