KR100520487B1 - Fluid presure control reducing valve - Google Patents

Abstract

The present invention provides a pressure reducing valve installed in a power plant or a hot water system, etc., so that the flow path of the fluid can be properly controlled in the pressure reducing valve itself of the present invention, so that the number of valves in one system can be reduced, In order to prevent the turbulent flow formed in the flow of the fluid passing through the pressure reducing valve to facilitate the flow, and to be able to remove deposits or other foreign substances formed in the pipe of the pressure reducing valve of the present invention by a simple operation, The main body constituting the pressure reducing valve is composed of a first main body and a second main body, and the first main body drills two through holes penetrating through the cylindrical member having a hollow hole, and a rod is inserted into the through hole, and the upper and lower rods are inserted into the through holes. In order to adjust the hydraulic pressure of the supplied fluid according to the length adjustment in the inserted state, It relates to a pressure reducing valve structure for adjusting the fluid pressure.

Description

Reduced pressure valve structure that controls fluid pressure by raising and lowering the rod {Fluid presure control reducing valve}

The present invention relates to a pressure reducing valve structure for reducing a primary pressure provided to an appropriate secondary pressure, such as steam pressure provided by an industrial machine, in particular, a nuclear power plant, or a hot water pressure supplied from other hot water systems. The main body is formed in two stages, and two through holes are formed in the first body in the longitudinal direction, and the second body is formed in a hollow shape. After welding, the rod for vertically moving up and down the through holes of the first body is moved up and down. By adjusting the length to be inserted into the through hole, the high pressure fluid passes through one side of the through hole, but flows through the gap between the through hole and the rod to control the flow of high pressure and high speed, through the other side When the fluid flows into the ball, steam or hot water can be supplied through the pipe under reduced pressure. It relates to a pressure reducing valve structure for adjusting the fluid pressure by the vertical lifting of the load to make.

In general, the valve is the final control element to control the fluid system and is used as an active form of the fluid system by controlling the pressure, temperature and flow rate of the system as a barometer. It is well known that the pressure and flow rate are regulated and are being commercialized due to the influence of the physical properties of the fluid and the control environment.

Since the structure of such a valve varies greatly depending on the structure and characteristics of the fluid control, the physical and chemical properties of the fluid, and the operation method, the structure of the valve depends on the structure and characteristics of the fluid control and the physical and chemical properties. There is no other way than to do it.

The most important aspects of the valve structure are the pressure retaining part and the valve trim which performs the function of the valve while being in direct contact with the fluid, and the driving part for manipulating the trim part. According to the shape and type of the pressure holding part and the shape or type of the trim, the valve is divided into an on-off valve and a flow throttling valve.

One of the flow control valves, Pressure Reducing Regulators, as is generally known, is a single stage pressure reducing valve used when the flow rate is large and the precision of the pressure reduction under the maximum flow conditions. Since two stages are used, two stage pressure reducing valves or pilot type pressure reducing valves are used.

However, these various types of pressure reducing valves have a problem of loss of value of the valve itself and loss of cost of the system as a whole. It is pointed out as a problem that makes it larger.

In order to suppress such erosion or corrosiveness, various studies are being conducted.

However, in the case of the conventional pressure reducing valve, there are problems such as replacement and replacement of eroded or corroded components at regular intervals, and in the case of a specific pressure reducing valve, the entire valve must be replaced and replaced due to damage to internal components. There is a problem such as a considerable maintenance cost.

In addition, when the pressure of the fluid is adjusted by using a conventional pressure reducing valve, when a substantial initial pressure is provided, a plurality of pressure reducing valves are sequentially installed in the pipeline of the system so that the pressure is not applied to the components by sequentially reducing the pressure to an appropriate pressure. As a result, there is a problem that a plurality of pressure reducing valves should be provided for pressure reduction to an appropriate pressure.

In addition, if sediment or other foreign matter that accumulates gradually in the pipeline of the pressure reducing valve accumulates, the flow of the fluid is controlled, causing severe turbulence and unstable fluid flow of the pressure reducing valve. By decomposing and cleaning, foreign matter or sediment should be removed, and the decomposition work is not only complicated, but also requires a considerable cost.

Therefore, the present invention has been made to solve the above problems, but to provide a pressure reducing valve installed in a power plant or a hot water system, etc., it is possible to properly control the flow path of the fluid in the pressure reducing valve of the present invention, a system It is possible to reduce the number of valves in the tank, to prevent turbulence from forming in the flow of the fluid passing through the pressure reducing valve, to facilitate the flow, and to form sediments or other foreign substances formed in the pipe of the pressure reducing valve of the present invention. The purpose is to make it possible to remove by simple operation.

The present invention for achieving the above object,

Welding the first body 110 in which two through-holes 111 are formed in the longitudinal direction of the cylindrical body, and the hollow second body 120 to the upper end of the first body 110, and the second body. (120) the main body portion 100 to be a sealing portion 130 for sealing the upper end,

Connected to the lower end of each of the through-holes 111 of each of the first body 110 to flow the main body portion 100 to the input tube 200 and the other side is a high-pressure fluid is guided for flowing out the reduced pressure Discharge tube 210,

Rod 320 for insertion into the through hole 111 of each of the first body 110 to the lower side of the support 310, the female thread portion 311 is formed on the inner peripheral surface and the longitudinal flow path groove 312 is formed on the outer peripheral surface And the fluid pressure control unit 300 is fused,

A threaded rod 420 is formed at the lower end of the annular body 410 to be screwed into the support 310 of the fluid pressure control unit 300 so that its end is in contact with the top surface of the first body 110. Extending to the top of the body 410 is a handle fixing rod 430 to be coupled to the handle 440 is characterized by consisting of a lifting unit 400 for elevating the fluid pressure control unit 300 up and down.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is to provide a reduced pressure to provide a fluid provided at a high pressure as shown in the accompanying drawings, the body portion 100 to be cylindrical, and the input tube 200 associated with the lower side of the body portion 100 ) And the discharge pipe 210 and the initial fluid flow by artificially adjusting the length of the through-hole (111, 111 ') flow path of the first body 110 of the body portion 100 through the inside of the body portion 100 It consists of a fluid pressure control unit 300 for controlling and reducing the pressure, and the lifting unit 400 for lifting the fluid pressure control unit 300 up and down.

The main body 100 is divided into a first main body 110 and a second main body 120, as shown in the accompanying drawings 2 to 5, the main body 100 toward the upper end of the second main body 120. It is composed of a seal 130 for maintaining the airtightness inside.

As shown in the drawing, the first main body 110 of the main body 100 has a proper spacing between two through holes 111 and 111 ′, which penetrates the inside of the rod-shaped body in a longitudinal direction. It is formed spaced apart.

The through holes 111 and 111 ′ are respectively connected to the through holes 111 by the input pipe 200 through which fluid having an initial primary pressure can flow. The fluid having the secondary pressure (Secondary Pressure) that is reduced in flow is welded to each of the discharge pipes 210 that can flow out of the pressure reducing valve 10 of the present invention by flowing through the through-hole 111 'of the other side. .

The input tube 200 is to be associated with one side of the through-hole 111 of the input side of the through-holes 111 and 111 'passing through the first body 110 forming a part of the main body 100 as described above, A fluid having a primary pressure in the inlet side pressure in the body portion 100 of the pressure reducing valve 10 or the pressure reducing valve 10 of the present invention close to the pressure reducing valve 10 is introduced into the body portion 100. The discharge pipe 210 is passed through the pressure reducing valve 10, the main body 100, and is maintained in a reduced pressure while maintaining a proper pressure at a secondary pressure. The outlet side through-hole 111 ′ in the main body 100 is connected to the outlet side pipe 20 ′ close to the pressure reducing valve 10.

Boring the bottom inner diameter of each of the through holes 111 and 111 'so that the input pipe 200 and the discharge pipe 210 can be easily inserted into the lower end side of the through holes 111 and 111' of the first body 110, respectively. By processing, as shown in the drawing it is preferable to form such that the inner diameter of the lower end of the through-hole (111, 111 ') is larger than the outer diameter of the input tube 200 and the discharge tube 210, the input tube 200 and the discharge tube inserted in this way 210 is fixed by welding between the lower end surfaces of the first body 110.

On the other hand, the groove 112 is formed in the upper surface of the first body 110, the end of the screw rod 420 of the lifting unit 400 which will be described later is inserted, the screw rod 420 can maintain the current position Make sure

Here, in order to enable the disassembly of the input tube 200, as shown in FIG. 6, the elbow fitting tube 202 is connected to the input tube 200 connected directly below the first body 110 of the main body 100. It is preferable to connect using the nut 201 or the like.

The reason for doing this is that the sediment or various kinds of sediment generated in the inlet side through-hole 111 in the input tube 200 and the first body 110 by the high-pressure and high-speed inflow of the fluid flowing through the input tube 200. It is for easy cleaning of debris and debris.

In other words, when used for a long time, the sediment, foreign substances, and scales are kept in a cured state. Thus, the cured precipitate may cause a serious turbulence phenomenon while preventing the flow of the fluid. When cleaning the pressure-reducing valve 10 of the present invention after cleaning the brush 30 through the inside of the input pipe 200 connected in a straight line downward as shown in Figure 6 in the state in which the elbow joint pipe 202 is released. By inserting the inlet side through-holes 111 of the input tube 200 and the first body 110 can be easily and quickly cleaned.

Reference numerals 201 and 211, which are not described herein, are nuts for connecting respective ends of the input pipe 200 and the discharge pipe 210 to the inlet and outlet side pipes 20 and 20 ′.

Meanwhile, the second body 120 having a hollow shape to the upper end of the first body 110 and whose outer diameter is the same as the outer diameter of the first body 110 is fusion-fixed.

When the fluid flows into the pressure reducing valve 10 of the present invention at the upper end of the second body 120, the sealing part 130 is provided to ensure airtightness, and the sealing part 130 is shown in FIGS. As shown in FIG. 3, the bushing buddy 137 and the bushing 136, the body nut 133, and the like, which are fitted to the handle fixing rod 430 of the lifting unit 400, are inserted into each element. The gasket ring 134 to secure the will be rounded.

In addition, the bearing 135 for smooth rotation of the handle fixing rod 430 is rotated and the spindle grand 132 is rotated to the upper end of the body nut 133 and the spindle nut 131 is upward. By combining with the threaded portion of the bushing 136, the upper end of the second body 120 is sealed as a whole to ensure airtightness.

The fluid pressure control unit 300 is embedded in the second body 120, and is inserted into the through holes 111 and 111 'of the first body 110, so that the input tube 200 and the discharge tube 210 are ) It is a configuration for controlling the flow path.

As shown in FIGS. 2 to 4 of the drawing, the fluid pressure adjusting part 300 forms a female screw portion 311 on the inner circumferential surface of the cylindrical support 310 on the upper end side, and in the longitudinal direction of the outer circumferential surface of the support 310. A flow path groove 312 is formed.

The flow path groove 312 maintains the state in which the support 310 is in close contact with the inner diameter of the second main body 120, and thus the fluid introduced through the fluid input side through hole 111 of the first main body 110. Is a groove for allowing the flow of the second body 120 to flow smoothly.

In addition, a set of rods 320 are respectively extended to the lower end of the support 310, each rod 320 is the inlet side through-hole 111 and the outlet side of the first body 110 described above. The outer diameter of the through hole 111 and 111 ′ is preferably smaller than the inner diameter of the through hole 111 and 111 ′ so as to be inserted into the hole 111 ′. The gap (t, t ') is formed, so that the high-speed, high-pressure fluid introduced into the through hole 111 of the first body 110 through the inlet pipe 20 can flow through the gap. .

On the other hand, it is preferable to configure so as to vary the diameter of the upper outer diameter (D) and the lower outer diameter (D ') of the rod 320, for example, as shown in FIG. D) is formed larger than the bottom outer diameter (D ') to more effectively control the fluid flowing through the through holes (111, 111').

That is, when the rod 320 is inserted over the entire length of the through holes 111 and 111 ′ of the first body 110, the high speed and the high pressure introduced through the inlet pipe 20 and the input pipe 200 are provided. When the fluid is introduced into the through hole 111 of the first body 110, a substantially flow path (the gap in FIG. 3 is formed by the rod 320 embedded in the entire length of the through hole 111). (t, t ') is secured only in the gap (t, t') formed by the difference between the outer diameter of the rod 320 and the inner diameter of the through hole 111 of the first body (110). The flow rate of the provided high pressure and high speed can be flowed while decreasing.

In addition, since the outer diameter gradually increases toward the upper end of the rod 320, the gap t between the outer diameter of the rod 320 and the inner diameter of the through hole 111 is gradually narrowed by the difference. Since the rapid turbulent flow of the fluid that can be generated can be suppressed, and the fluid flow rate and hydraulic pressure can be effectively controlled and flowed, the fluid that has completely passed through the through hole 111 of the first body 110 is the second body. Due to the residual pressure of 120, the fluid flows along the through hole 111 ′ penetrated to the other side of the first body 110, and the fluid in a state where the pressure is reduced by proper set pressure required by the operator is discharged. It is to be discharged via the outlet side pipe 20 'through 210.

Therefore, in order to effectively control the hydraulic pressure of the provided fluid, the fluid pressure control unit 300 is adjusted, and the rod 320 in a state inserted into the through holes 111 and 111 'of the first body 110. It is necessary to adjust the position of the bar, in consideration of the characteristics of the fluid, as described above, when the rod 320 is located throughout the through hole 111 as described above, the flow of the initially introduced fluid is the rod ( Since the narrow gap t, t 'between the 320 and the through-hole 111 on the input side runs through the entire through-hole 111, the fluid hydraulic pressure is considerably reduced while flowing through the input-side through-hole 111, and then the other side. The second pressure is reduced while passing through a narrow gap (t, t ') between the through hole (111') and the rod (320) on the discharge side. It becomes possible.

The elevating unit 400 allows the fluid pressure regulating unit 300 to be moved up and down, and the rod of the fluid pressure regulating unit 300 inserted into the through holes 111 and 111 ′ of the first body 100. In the configuration for changing the position of the 320, as shown in the accompanying drawings is provided with a handle fixing rod 430 for fixing the handle 440 on the upper side and the lower tongue 410 is formed below , The threaded rod 420 is formed long below the ring tongue 410.

A sealing part 130 is formed between the ring tongue 410 and the handle fixing rod 430 to prevent the fluid passing through the body part 100 from leaking to the outside.

In addition, the screw rod 420 is screwed with the female screw portion 311 inside the support 310 of the fluid pressure control unit 300, the lower end of the screw rod 420, the first body described above Maintain the state that is located in the groove 112 of (110).

Therefore, when turning the handle 440 is fixed to the handle fixing rod 430 of the elevating unit 400, the screw rod 420 is a fluid pressure control unit 300 along the screw rod 420 while keeping its position As a result, the rod 320 of the fluid pressure regulating unit 300 moves up and down inside the through holes 111 and 111 ′ of the first body 110 as a result (see FIG. 5). By adjusting the length of the narrow gap (t, t ') between the through holes (111, 111') and the rod 320 of the main body 110, it is possible to effectively control the flow path of the fluid.

Hereinafter will be described the operating state of the present invention.

First, the secondary pressure from the initial primary pressure of the fluid provided to the inlet pipe 20 of the pressure reducing valve 10 to the outlet pipe 20 'of the pressure reducing valve 10 is shown. After calculating the value of), it is possible to calculate the up and down stroke stroke of the rod 320 of the fluid pressure control unit 300 in consideration of the flow rate and the hydraulic pressure of the fluid.

That is, since the decompression amount of the fluid can be calculated according to the length of the narrow gap t, t 'between the rod 320 and the through holes 111 and 111' of the first body 110, the calculated value is calculated. As a result, the operator adjusts the handle 440 to adjust up and down the rod 320 of the fluid pressure control unit 300.

In this case, as shown in the drawing, when the operator turns the handle 440, the vertical travel distance of the rod 320 may be known by the pitch value at the time of one rotation of the screw rod 420. When the length of the narrow gap t, t 'between the rod 320 and the through holes 111 and 111' is set by pressure, the rod 320 is initially positioned at the bottom of the through holes 111 and 111 '. In this state, the handle 440 is rotated to move the rod 320 upward by a set pitch value. (In fact, the difference between the gap t and the gap t 'is quite minute, so the pitch feed distance The critical factor is the position of the lower end of the rod 320 in the through holes 111 and 111 ', and the lower end of the rod 320 controls the flow of the initial flow. Because)

Therefore, the threaded rod 420 of the lifting unit 400 is located in the lower groove portion 112 of the upper surface side groove 112 of the first body 110 of the main body portion 100 described above, the upper end portion of the sealing portion 130 The support 310 of the fluid pressure control unit 300, which is rotated while maintaining a fixed state and is screwed with the screw rod 420, is elevated along the screw rod 420, and eventually, the rod 320. ) Is moved upward from the through holes 111 and 111 'of the first body 110.

Meanwhile, in the present invention, the lifting means of the fluid pressure control unit 300 is illustrated and described as being performed only by the operation of the handle 440, but the present invention is not limited thereto. Of course, the screw rod 420 can be rotated according to the forward and reverse driving of the motor.

When the fluid having the initial primary pressure flows into the pressure reducing valve 10 side through the inlet pipe 20 after the adjustment of the lifting distance of the rod 320 of the fluid pressure control unit 300 as described above, the introduced fluid is shown in FIG. As shown in 5a, the rod 320 and the through hole 111 after passing through the flow path in the state where there is no interference of the rod 320 after flowing into the through hole 111 at the inlet side of the first body 110. As the high-pressure and high-speed fluid flows through the narrow gap (t, t ') between them, the hydraulic pressure of the gradual fluid is reduced, and the diameter gradually increases toward the rod 320. The narrow gap (t) is gradually narrower as described above, the fluid speed is increased while the hydraulic pressure gradually decreases.

On the other hand, the fluid flowing in this way is filled in the hollow body of the second body (120), the through-hole 111 while maintaining a state in which it is always filled with a constant pressure by the pressure of the incoming fluid, After the fluid having the initial pressure introduced to the side is gradually reduced in pressure and passed, the fluid is introduced into the second body 120 and then into the through hole 111 ′ of the discharge side of the first body 110. The fluid may be supplied through the outlet pipe 20 ′ in a state in which the inlet and flow are decompressed to the secondary pressure which becomes the set pressure through the discharge pipe 210 connected to the lower end of the first body 110.

Here, the second body 120 is continuously supplied at a pressure gradually reduced through a narrow gap t, t 'between the through hole 111 and the rod 320 of the first body 110. ) When the fluid filled at a predetermined pressure flows out through the other through hole 111 ′ of the first body 110, a narrow gap between the outer diameter of the rod 320 at the upper end of the through hole 111 ′ (t) As the narrow gap t 'between the bird and the outer diameter of the rod 320 on the lower side thereof gradually widens, the fluid having a relatively high flow rate gradually drops in the flow rate, and the through hole 111 and 111'. While effectively suppressing the turbulence that may be generated by the fluid flowing through the pressure is gradually lower than the pressure filled inside the second body 120 and passes through the through hole (111 '), and eventually through hole 111' The pressure of the fluid flowing out to the discharge pipe 210 side through the pressure reduction within the tolerance range of the pressure desired by the operator It said there could be violated.

On the other hand, when the fluid supplied by using the pressure reducing valve 10 of the present invention for a long time as described above, various foreign substances or scale contained in the fluid through the through holes (111,111) of the first body 110 ') Particularly, since the high-pressure fluid is caught in the hardened state in the through hole 111 of the initial input side, it is necessary to clean the hardened state of the scale or foreign matter in such a proper time.

As described above, in order to clean the through hole 111, the input pipe 200 is connected to the lower side of the first body 110 using the elbow joint pipe 202 as shown in FIG. 6. Since the input pipe 200 connected to the 200 and the inlet pipe 20 side can be separated from each other, the elbow fitting pipe 202 is separated and disassembled when necessary for cleaning or the like. It can be used to facilitate the cleaning by inserting the through-hole 111 side of the first body 110 through the input tube (200).

In the configuration of the elbow fitting pipe 202 in the present invention, since the input pipe 200 connected to the inlet pipe 20 is rounded and bent at a predetermined position, the elbow fitting pipe 202 is not used. The pressure reducing valve 10 itself is to prevent in advance the problem that must be replaced entirely.

In addition, the elbow fitting pipe 202 is installed in the input pipe 200 is mainly connected to the inlet pipe 20 in the present invention, but shown and described, but the discharge pipe connected to the outlet pipe (20 ') side ( The elbow fitting pipe 202 may also be installed in the 210 to facilitate the cleaning of the through hole 111 ′ of the first body 110 associated with the discharge pipe 210.

Therefore, according to the present invention, when the operator easily operates the lift unit by the steering wheel operation or other driving means of the present invention to adjust the fluid pressure adjusting unit, the high pressure fluid is gradually reduced as it passes through the input tube and the through hole. As well as the effect of completely eliminating turbulence due to rapid depressurization, it is possible to expect a depressurization effect in two stages in one pressure reducing valve to prevent stress that may occur in the pressure reducing valve itself. Thus, the effect of remarkably extending the service life can be expected.

In addition, the present invention, when the long-term use of the water, debris, foreign matters, etc., which may be generated by the flow of the fluid at high pressure and high speed is stuck in the first body through-holes of the pressure reducing valve, etc., the flow of the fluid is disturbed. In order to prevent maintenance, such as cleaning, the operator can easily disassemble and disassemble the input pipe using the elbow fitting pipe so that the input pipe is directly below the first body. In addition to the effect that can be easily made, as well as the maintenance cost reduction effect, it is possible to keep the flow path in a clean state at all times, mainly depends on the corrosion problems and physical properties of the chemical properties of the fluid as in the prior art The loss of value of the valve itself resulting from the erosion problem and the cost of the loss of the entire system. Agent, such as a severe turbulence was caused by a disturbance of the fluid flow can be expected to fully preventing effect.

In addition, according to the present invention, the outer diameter of the fluid pressure control rod inserted into the through-hole penetrating the first body is gradually formed from the upper end to the lower end, so that the high pressure fluid is gradually decompressed when initially entering When the fluid under high pressure flows through the other through-hole of the first body to exit the main body, the flow rate decreases gradually due to the progressive expansion, and the pressure is gradually reduced to induce a relatively soft fluid flow. It can be expected, the effect that can reduce the physical shock or stress of the pressure reducing valve can be expected.

In addition, according to the present invention, since it is possible to set a reduced pressure to an appropriate pressure by using a single pressure reducing valve, it is cumbersome to install a plurality of pressure reducing valves in a plurality of places in a pipe as in the conventional system, and the accompanying cost and a large amount thereof. It is a useful invention that can solve the problems such as the lack of installation space and the pipe length becomes relatively long according to the installation at a time.

1 is a perspective view of the present invention,

2 is an exploded perspective view of the present invention,

3 is a front sectional view of the present invention,

Figure 4 is a perspective view showing only the fluid pressure regulating portion and the lifting portion of the present invention separated,

5A and 5B are cross-sectional views illustrating a state in which the fluid pressure regulating unit is lifted up and down using the elevation unit of the present invention.

6 is a partial cross-sectional view showing a state in which the pressure reducing valve input tube of the present invention is separated and cleaned using a brush or the like.

※ Brief description of the main symbols in the drawings

10; Pressure reducing valve 20; Inlet side piping

20 'outlet 100 pipe; Main body

110; First body 111,111 '; Through hole

112; Groove 120; 2nd body

130; Seal 131; Spindle nut

132; Spindle grand 133; Body Nut

134; Gasket ring 135; bearing

136; Bushing 137; Bushing Buddy

200; Input tube 201; nut

202; Elbow joint 210; Discharge tube

211; Nut 300; Fluid pressure regulator

310; Support 311; Female thread

312; Eurohome 320; road

400; Elevator 410; Round tongue

420; Screw rod 430; Handle fixing rod

440; handle

Claims (3)

Welding the first body 110 in which two through-holes 111 are formed in the longitudinal direction of the cylindrical body, and the hollow second body 120 to the upper end of the first body 110, and the second body. (120) the main body portion 100 to be a sealing portion 130 for sealing the upper end, Connected to the lower end of each of the through-holes 111 of each of the first body 110 to flow the main body portion 100 to the input tube 200 and the other side is a high-pressure fluid is guided for flowing out the reduced pressure Discharge tube 210, Rod 320 for insertion into the through hole 111 of each of the first body 110 to the lower side of the support 310, the female thread portion 311 is formed on the inner peripheral surface and the longitudinal flow path groove 312 is formed on the outer peripheral surface And the fluid pressure control unit 300 is fused, A threaded rod 420 is formed at the lower end of the annular body 410 to be screwed into the support 310 of the fluid pressure control unit 300 so that its end is in contact with the top surface of the first body 110. The rod 410 is extended to the upper end of the handle fixed rod 430 to be coupled to the handle 440, the lifting portion 400, characterized in that consisting of the lifting unit 400 for lifting up and down the fluid pressure control unit 300 Pressure reducing valve structure that controls the fluid pressure by lifting up and down. The method of claim 1, Pressure reducing valve structure for adjusting the fluid pressure by the elevating of the rod including the elbow joint pipe 202 and the nut 201, the input pipe 200 or the discharge pipe 210 can be separated. The method of claim 1, The rod 320 of the fluid pressure control unit 300 is a pressure reducing valve for adjusting the fluid pressure by the up and down of the rod including the outer diameter (D> D ') gradually increases from the bottom to the top side.