KR101679802B1 - Reducing value having pressure adjustment of dial type and prevention of noise function - Google Patents

Abstract

The present invention relates to a pressure reducing valve having a dial type pressure control and a noise preventing function to prevent a noise during operation by sealing the valve so as to easily and precisely set a reduced pressure, A main body 110 including an operating part 120 and including an inlet 111 through which fluid flows and an outlet 112 through which fluid is discharged at a constant pressure; A pressure reducing operation part 120 including a piston part and a piston housing part for performing an operation of keeping the pressure of the inflow fluid constant; A pressure setting portion 130 including a cover 131, a rotation shaft 132, a pressure nut 133, and a spring 134, for setting a reduced pressure; And a dial portion 140 for adjusting the pressure setting portion 130. The piston housing portion of the pressure reducing operation portion 120 is mounted on the outer circumferential surface of the piston housing 124 and the piston housing 124 And a vertical protrusion 124b is formed in the piston housing 124 so that the lower four pillar portions 124a of the piston housing 124 are fitted with the strainer 125. The inner surface of the strainer 125 And a seating groove portion 125a on which the vertical projection 124b of the piston housing 124 is mounted.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a reduction valve having a dial type pressure control function and a noise prevention function,

More particularly, the present invention relates to a pressure reducing valve for a water service, and more particularly, to a pressure reducing valve for dial-type pressure control and noise prevention which prevents a noise from being generated during operation, To a pressure reducing valve having a function.

Generally, the pressure reducing valve is a valve that depressurizes the liquid when the pressure of the liquid is higher than the intended use, and keeps the pressure constant after depressurizing.

Among these pressure reducing valves, especially in the recent years, there has been proposed a pressure reducing valve which can more easily operate and set the reduced pressure.

This is a pressure reducing valve disclosed in Patent Publication No. 10-0954720. As shown in Figs. 1 and 2, a first space 12 on the side of the inlet 11 and a second space 14 on the side of the outlet 13 are formed, A main body 10 including a through hole opened and closed by a disc 15, and a linear stem 16 to which the disc 15 is fixed at one end; A diaphragm 22 fixed to the lower portion of the casing and fixed to the other end of the stem 16 at the center thereof, (20) including a lower diaphragm (22) and a spring (23) supported by an upper flow pressure piece (24); A display unit 31 integrally formed on the upper surface of the casing 21 and showing the pressure member 32 radially from the center, an indicator 33 positioned above the display unit and adapted to select a pressure level in the pressure member while rotating And an adjusting unit 30 formed integrally with the indicating unit and including a rotating shaft 34 passing through the display unit 31 and screwed into the pressing piece 24 inside the casing.

Therefore, the pressure reducing valve is capable of adjusting the pressure reduction without providing a measuring means such as a pressure gauge or a scale measuring instrument.

In addition, no further visual measurement or fine adjustment is required, and pressure adjustment / re-adjustment is easy and quick, and the repeatability of the adjustment in the same standard is excellent.

Further, since the indication portion can be easily fixed by the rotation of the bolt, there is an effect that any rotation of the indication portion which is the pressure regulation means is prevented.

However, since the conventional pressure reducing valve has a structure in which the display unit 31 is fixed to the upper end of the casing 21 of the actuating unit 20, the structure of the upper end of the casing 21 is complicated, And the casing is broken when the pressure is increased.

Also, since the pressure of the pressure of the pressure piece 24 is increased and the width of the pressure piece 24 is increased, it is difficult to precisely and precisely control the pressure reduction.

Further, the strainer 17 mounted on the periphery of the frame 18 is rotated during the flow of the fluid or the pressure reducing operation, resulting in a large buzzing noise, thereby lowering the reliability of the product.

Further, after the pressure reducing pressure is set through the adjusting unit 30, the instruction unit is fixed with the fixing bolt, thereby preventing any rotation of the indicating unit. However, There is a problem that can not be done.

Registered Patent Publication No. 10-0954720, Registered Utility Model No. 20-0362642 Registered Utility Model No. 20-0252479 Registration Utility Model No. 20-0256117

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and an object of the present invention is to provide a method and a device for preventing the movement of a strainer during operation by setting a decompression pressure in a dial- And a pressure reducing valve provided with a dial-type pressure control function and a noise preventing function.

Another object of the present invention is to provide a pressure reducing valve having a dial type pressure control and a noise preventing function, which is formed by molding a cover of a pressure set portion into a metal so as not to be damaged by a fluid pressure.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, there is provided a vacuum cleaner comprising: a main body portion having a depressurizing operation portion and including an inlet through which a fluid is introduced and an outlet through which a fluid maintains a constant pressure; A pressure reducing operation part including a piston part and a piston housing part for performing an operation of keeping a pressure of an inflowing fluid constant; A pressure setting section including a cover, a rotating shaft, a pressure nut, and a spring, the pressure setting section setting a reduced pressure; And a dial portion for adjusting the pressure setting portion. The piston housing portion of the pressure reducing operation portion 120 is composed of a piston housing and a strainer mounted on an outer circumferential surface of the piston housing, and the piston housing has a lower four pillar portions Wherein a vertical protrusion is formed on the inner surface of the strainer and the vertical protrusion of the piston housing is mounted on the inner surface of the strainer.

According to another aspect of the present invention, there is further provided a filter net at an inlet of the main body.

According to another aspect of the present invention, there is provided a display apparatus including a dial unit including a first rotating unit, a second rotating unit, and a fastening unit, the first rotating unit including a display window formed with a ruler portion of a second rotating unit, A first gear portion formed on a rim of a lower surface of the inner surface and an inner fixed portion fitted to a rotary shaft of the pressure setting portion inwardly, and the second rotary portion is mounted on the inner side of the first rotary portion And a second gear portion formed on the lower outer circumferential surface and meshed with the first gear portion of the first rotating portion, wherein the fastener has a circular protruding portion for guiding the second rotating portion to be located on the inner side, A first protrusion and a second protrusion formed on the inner side of the circular protrusion to position the second rotating part so as to eccentrically rotate, It is formed on the inner surface of the sealing ball, a lower end portion and being sealed characterized in that the obstacle consists of a coupled to the locking groove of the cover.

According to the present invention, the outer circumferential surface of the cover upper end portion of the pressure set portion is formed with a locking groove portion to be engaged with the locking projection of the locking portion.

According to the present invention, the cover is made of a brass material.

As described above, the present invention provides a merit in that noise is not generated by preventing the movement of the strainer during operation by sealing the dial-type so as to easily and precisely set the decompression pressure and making it impossible to perform any operation.

Further, according to the present invention, the cover structure of the pressure set portion is changed to be formed into a metal, thereby providing an effect of preventing the conventional synthetic resin product from being damaged by the fluid pressure.

1 is a perspective view of a conventional pressure reducing valve,
Fig. 2 is an exploded perspective view of Fig. 1,
FIG. 3 is a perspective view of the reduced pressure valve according to the present invention,
4 is an exploded perspective view of a pressure reducing valve according to the present invention,
Fig. 5 is a sectional view of the above-mentioned Fig. 3,
(B) is a plan view in a state where the second rotating portion 142 is coupled to the fastening portion, (c) is a plan view in which the second rotating portion 142 is engaged with the first rotating portion, FIG. 4 is a bottom view showing an additional joined state.
FIG. 7 and FIG. 8 are sectional views showing the operation state of the pressure reducing valve of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

FIG. 3 is an exploded perspective view of the pressure reducing valve according to the present invention, FIG. 4 is an exploded perspective view of the pressure reducing valve according to the present invention, and FIG. 5 is a sectional view of FIG.

As shown in the drawings,

A main body 110, a depressurizing portion 120, a pressure set portion 130, and a dial portion 140.

The main body 110 includes an inlet 111 through which a fluid such as tap water flows and an outlet 112 through which the fluid is discharged at a constant pressure.

A filter net 113 is further provided in the inlet 111 of the main body 110 to filter out impurities.

The depressurizing portion 120 is a component for performing an operation of maintaining the pressure of the inflow fluid constant, and includes a piston portion and a piston housing portion.

The piston part is fitted with a piston packing 122 through a holder 122a and a washer 122b mounted on the lower end of the coupling shaft 121 and has an upper washer 123, a piston holder 128, 129 to be mounted on the diaphragm 126.

The piston housing part includes a piston housing 124 as a housing of the piston part and a strainer 125 mounted on the outer circumferential surface of the piston housing 124.

Particularly, the piston housing 124 is formed with a vertical protrusion 124b in which the strainer 125 is fitted and fixed to the lower four pillar portions 124a, and a vertical protrusion 124b is formed on the inner circumferential surface of the strainer 125, And a seating groove portion 125a to be mounted on the projection 124b is formed.

The vertical protrusions 124b of the piston housing 124 and the seating recess 125a of the strainer 125 are very important in that the vertical protrusions 124b of the piston housing 124 are formed in the above- The strainer 125 is fixed to the piston housing 124 by being fitted into the seating groove 125a of the strainer 125 so that the strainer 125 is not rotated even in the case of fluid flow and pressure fluctuation, Thereby preventing noise from being generated.

Further, the depressurizing operation unit 120 performs a depressurizing operation for blocking or passing the flow of the fluid while releasing or closing the piston from the piston housing unit, and a detailed description thereof will be described later.

Here, reference numerals 123a, 124c, and 124d denote O-rings and reference numeral 127 denotes a guide.

The pressure set portion 130 is a component for setting a reduced pressure, and includes a cover 131, a rotary shaft 132, a pressure nut 133, and a spring 134.

The cover 131 is formed in a hexagonal shape on the inner circumferential surface of the inner space so as to prevent the rotation of the pressing nut 133 located inside and has a coupling part 131a to be coupled to the main body 110 at the lower end, A locking groove 131c is formed on the outer circumferential surface of the locking part 131b to be engaged with the locking projection 143f of the locking part 143. [

Further, the cover 131 is made of metal, especially brass, and provides the advantage that it is not blown or damaged even when the water pressure rises.

The rotary shaft 132 includes a rectangular portion 132a coupled to the inner fixed portion 141e of the first rotary portion 141 of the dial portion 140 and a screw portion 132b fastened to the pressing nut 133 .

The pressing nut 133 is fastened to the threaded portion 132b of the rotary shaft 132 in the form of a hexagonal nut so that the spring 133 is lifted or lowered in the cover 131 according to the rotation of the rotary shaft 132, 134).

That is, the pressure set portion 130 is configured such that the pressure nut 133 moves in conjunction with the rotation of the dial portion 140, thereby causing the elastic force of the spring 134 to be applied to the diaphragm 126 through the piston holder 128 By varying the pressure, the reduced pressure is set.

The dial unit 140 is a component for setting the reduced pressure by adjusting the pressure set unit 130 and is composed of a first rotating unit 141, a second rotating unit 142, and a fastening unit 143.

The first rotating part 141 includes a display window 141a formed so that a ruler part 142a of the second rotating part 142 is seated inside and a plurality of rod arts 141c formed on the lower side part 141b A first gear portion 141d formed at the lower edge of the inner surface and an inner fixed portion 141e for fitting the rotary shaft 132 of the pressure setting portion 130 inward.

The second rotation part 142 is installed on the inner side of the first rotation part 141 and has a ruler part 142a formed on the upper end thereof and a first gear part 141d And a second gear portion 142b which is engaged with the second gear portion 142b.

The fastening tool 143 is engaged with the first rotating part 141 and is mounted on the cover 131 of the pressure setting part 130 so that the second rotating part 142 A first protrusion 143b formed on the inner side of the circular protrusion 143a for positioning the second rotation part 142 so as to eccentrically rotate, A protrusion 143c formed on the outer circumference of the cover 131 and a rod articulation 143d formed on the rim and sealed with the first rotatable portion 141 and a protrusion 143c formed on the inner surface of the lower end 143e and coupled to the engagement groove 131c of the cover 131 And a locking projection 143f.

The dial portion 140 having the above-described structure mounts the second rotation portion 142 at the upper end of the coupling portion 143. At this time, 143 and is seated eccentrically to one side by the first protrusion 143b and the second protrusion 143c.

In this state, the first rotation part 141 is fitted to the upper part of the second rotation part 142. A bottom view of the structure in which the first rotating portion 141 and the second rotating portion 142 are combined is shown in FIG. 4 (c).

The second gear portion 142b of the second rotation portion 142 is eccentrically engaged with the first gear portion 141d of the first rotation portion 141 so as to be meshed with each other.

That is, when the first rotating part 141 is rotated, the second rotating part 142 rotates, and the second rotating part 142 rotates less by the difference in radius.

The rotary shaft 132 mounted on the inner fixed portion 141e of the first rotary portion 141 is fastened and fixed by a fastening screw 144. When the pressure reduction is completed, The sealing members 143 seal each other through the sealing members 141c and 143d to form the sealing member 150. [

The assembly and operation of the pressure reducing valve of the present invention constructed as described above will be described.

The pressure reducing operation part 120 is mounted on the main body 110 and the pressure nut 133 and the spring 134 are coupled to the rotary shaft 132 of the pressure setting part 130, (110).

At this time, in the state where the rectangular part 132a of the rotary shaft 132 is protruded to the upper part of the cover 131, the locking part 144 is inserted first and then the locking protrusion 143f is inserted into the locking groove 131c of the cover 131, So that it can be assembled.

In this state, the second rotating portion 142 and the first rotating portion 141 are sequentially fitted and the first rotating portion 141 and the rotating shaft 132 are fixed through the fastening screw 144.

When the assembly of the pressure reducing valve is completed, the first rotation part 141 of the dial part 140 is rotated to set the reduced pressure.

The second rotation part 142 also gradually rotates in accordance with the rotation of the first rotation part 141 and the display window 141a of the first rotation part 141 is rotated by the radius and the coupling structure, 142a are displayed.

At the same time, the rotation axis 132 of the pressure set portion 130 rotates, and the rotation of the rotation axis 132 causes the pressure nut 133 to move downward or upward.

The present invention is characterized in that a ruler of the second rotation part 142 displayed on the display window 141a can be checked and set while rotating the first rotation part 141 of the dial part 140 by one or more rotations, So that the pressure nut 133 can be precisely set.

5, when the pressure nut 133 is lowered and the setting is completed, the spring 134 of the lower part of the pressure nut 133 presses the diaphragm 132 of the decompression operation part 1200 with the pressure corresponding thereto, And the diaphragm 126 is depressed to lower the piston portion to maintain the state of being separated from the piston housing portion.

 When the decompression setting is completed, the rod diameter 150 is fastened between the first rotating part 141 and the fastening part 143 so that any operation of the first rotating part 141 can not be performed.

When the water supply pipe is connected to the inlet port 111 and the outlet port 112 of the main body 110 and water is supplied, the water introduced into the inlet port 111 flows into the piston housing of the decompression operation unit 120, And is directed to the outlet port 112 along the flow path opened by the lower piston packing 122 through the piston 124.

Thus, the fluid continues to flow through the body 110.

If the pressure of the water supplied to the inlet port 111 becomes higher than the pressure at which the spring 134 presses the diaphragm 126 in such a state, As shown in Fig.

When the diaphragm 126 rises, the coupling shaft 121 also moves upward, and the piston packing 122 rises to seal the bottom surface of the piston housing 124.

Accordingly, the water flowing into the inlet port 111 is blocked and can not flow to the outlet port 112. Accordingly, when the hydraulic pressure becomes lower than the set pressure, the spring 134 presses the diaphragm 126 to release the piston from the piston housing It is opened again and the flow of the fluid is resumed.

Through this repetitive operation, the fluid pressure is maintained at the set value.

110: main body part 120: pressure reducing operation part
124: piston housing 124b: vertical projection
125: strainer 125a: seat groove
130: pressure set portion 140: dial portion
141: first rotating part 142: second rotating part
143: fastening part 150:

Claims (5)

A main body 110 including a depressurizing portion 120 and an inlet 111 through which the fluid flows and an outlet 112 through which the fluid is discharged at a constant pressure;
A pressure reducing operation part 120 including a piston part and a piston housing part for performing an operation of keeping the pressure of the inflow fluid constant;
A pressure setting portion 130 including a cover 131, a rotation shaft 132, a pressure nut 133, and a spring 134, for setting a reduced pressure; And
And a dial portion (140) for adjusting the pressure set portion (130)
The piston housing portion of the decompression operation portion 120,
A piston housing (124) and a strainer (125) mounted on an outer circumferential surface of the piston housing (124)
The piston housing 124 is formed with vertical protrusions 124b in which the strainer 125 is fitted and fixed to the lower four pillar portions 124a and the vertical protrusions 124b of the piston housing 124 are formed on the inner circumferential surface of the strainer 125, A seating groove portion 125a on which the seat back 124b is mounted,
The dial unit 140 includes a first rotation unit 141, a second rotation unit 142, and a fastening unit 143,
The first rotating part 141 includes a display window 141a formed so that a ruler part 142a of the second rotating part 142 is seated inside and a plurality of rod arts 141c formed on the lower side part 141b A first gear portion 141d formed at the lower edge of the inner surface and an inner fixed portion 141e for fitting the rotary shaft 132 of the pressure set portion 130 inward,
The second rotation part 142 is installed on the inner side of the first rotation part 141 and has a ruler part 142a formed on the upper end thereof and a first gear part 141d And a second gear portion 142b which is engaged with the second gear portion 142b,
The fastening tool 143 includes a circular protrusion 143a for guiding the second rotating part 142 to be positioned on the inner side and a second protrusion 143b formed on the inner side of the circular protrusion 143a to rotate the second rotating part 142 eccentrically A first protrusion 143b and a second protrusion 143c for holding the first rotating portion 141 and the second rotating portion 141 so that the first protrusion 143b and the second protrusion 143c are formed on the inner surface of the lower end portion 143e, And a latching protrusion (143f) which is engaged with the latching groove (131c) of the cover (131).
The method according to claim 1,
And a filter net (113) is further installed in the inlet (111) of the main body (110).
delete The method according to claim 1,
And an engagement groove 131c is formed on the outer circumferential surface of the upper end 131b of the cover 131 of the pressure set part 130 to be engaged with the engagement projection 143f of the engagement part 143 of the dial part 140 Decompression valve with dial-type pressure control and noise suppression.
The method according to claim 1,
Wherein the cover (131) is made of a brass material.

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