KR200388668Y1 - shut-off valve and pressure reducing valve - Google Patents

Abstract

The present invention can perform the function of two valves simultaneously with a single valve by adding, technically combining, configuring, and integrating components into a pilot solenoid valve, which is a conventional intermittent valve, to control the discharge pressure. The first pilot valve and the first operator's outlet, the second pilot valve and the second operator's outlet are arranged to be in series in a flow path. And control the main valve to be used in common and to act as an intermittent valve when the first pilot valve acts, and to operate as a decompression valve when the second pilot valve acts to act as an intermittent valve and a decompression valve as a single valve. It also provides a valve to solve the water hammer (water hammer), which is a disadvantage of the pilot solenoid valve, while simultaneously performing the operations of the.

Description

Pressure reducing valve combined with intermittent valve {shut-off valve and pressure reducing valve}

The present invention relates to an intermittent valve combined pressure reducing valve. In general, Valbraham is installed between pipes to control the flow of fluid (water, oil, air, etc.). Among them, the pressure reducing valve is a pressure control valve to allow the pressure to be properly reduced to use the pressure of the valve outlet (discharge pressure). In the present invention, this is called a pressure reducing valve. Oil, air, etc.) will be expressed as water.

Of course, there have been decompression valves in the past. Due to the use characteristics of decompression valves, it is necessary to reduce the main valve opening degree of decompression valves to increase the pressure on the outlet side to adjust the outlet pressure to the desired pressure regardless of the change in the water pressure on the inlet side. In order to maintain the constant pressure by increasing the ground main valve opening degree, this requires an operating characteristic to control the opening degree of the main valve of the decompression valve.

Of course, the existing pressure reducing valve is used to open and close the main valve of the pressure reducing valve by using this action characteristic. However, in the general pressure reducing valve, the pressure at the outlet side causes a larger valve to open and close the main valve in addition to the main valve opening and closing the flow of water. Since the main valve is opened and closed, the structure is complicated and requires many parts, and it is not only smooth and expensive, but also to block or resupply the water supply to the pressure reducing valve. In addition, a separate intermittent valve must be additionally provided and installed in the pipe, while water hammer (water hammer) also exists as an issue to be solved in the electric intermittent valve, which is very inconvenient in use or economically.

Therefore, the present invention has been devised to solve such a problem, and by adding a new component to the pilot solenoid valve, which is a conventional intermittent valve, to perform the operation as a pressure reducing valve, by technically combining and configuring the intermittent valve with one valve, In order to be able to perform the role of and a decompression valve at the same time,

By operating the first pilot valve with the interruption of the voltage applied to the solenoid, the main valve is intermittently acted as an intermittent valve, while the sensing diaphragm serving as the discharge pressure sensor causes the second pilot valve to be operated with a small force. By operating it, it acts as a decompression valve that increases or decreases the opening of the main valve by the pressure at the inlet side. The structure is simple, the production cost is low, and the operation is assured, while the water hammer (water hammer) does not occur. The purpose is to provide stools.

The present invention, as shown in Figure 1, part of the bar structure having a conventional pilot solenoid valve structure, the valve body 11 having a valve inlet 11 and the valve outlet 12 and the inside of the valve body (10) There is a toilet seat (13) which is the beginning of the discharge port, the diaphragm (20) is in close contact with the toilet seat (13) and serves as the main valve, and the water for the main valve opening and closing operation is formed on one side of the diaphragm (20). There is an operation water inlet 21 introduced.

In addition, there is a reinforcement plate 30 on the diaphragm 20 to prevent deformation of the diaphragm 20 when the main valve is closed, and the first opening and closing of the diaphragm 20 by the first pilot valve 41 is performed. There is an operation water outlet 31, and the diaphragm 20 is seated 13 by sealingly fixing the outer periphery 22 of the diaphragm 20 on the upper outer periphery 14 of the lower valve body 10 under the pressure reducing valve. There is a valve body cover 16 for forming a pressure chamber 15 for close contact and sealing. The plunger accommodating chamber 43 is formed with a partition wall 161 on the cover 16 to form a spring 44 and a first chamber. The plunger 40 having the pilot valve 41 is accommodated therein and the solenoid 45 is provided outside the partition 161. The above is the structure of a conventional pilot solenoid valve.

(Assembly and fixing bolts not shown in the drawing)

Now, the description of the devised part of the present invention,

The present invention is connected to one side of the plunger storage chamber 43 and the pressure chamber 15 to the pipe 431, but the flow control valve 432, such as a ball valve that can control the flow rate in a small amount is connected to the pipe The reinforcing plate 30 is provided with an extension portion 52 of a cylindrical shape 50 provided with a plurality of radial ribs 51 downward, and a second operation water outlet 531 at the center under the extension portion. And cover the outer compartment around the outer periphery of the outer periphery at the outer periphery with an "O" ring, etc. to secure it to the extension by means of a shovel or strong adhesive, etc. In forming the storage chamber, a second pilot valve 42 fixed to a stem 421 of a predetermined length (but sufficient strength and corrosion resistance) is accommodated, the stem being the second stem. Penetrating through the operation water outlet 531 is inserted into the stem guide hole 171 to be described later on the storage chamber 54 And second pilot valves 42, thin elastic spring 422 is interposed between it and acts to push the second pilot valves (42) towards the second operation can outlet 531.

In the lower center portion of the inside of the valve body, a projection 17 through which a stem guide hole 171 is formed, which allows the second pilot valve 42 and the fixed stem 421 to freely slide up and down. And a discharge pressure sensing water inlet (172. hereinafter, expressed as a sensing water inlet) through a discharge pressure sensing chamber (hereinafter referred to as a pressure sensing chamber) is formed at the bottom of the protrusion.

On the other hand, the pressure sensing chamber 60 is formed by compressing and fixing the outer circumferential edge 611 of the discharge pressure sensing diaphragm (hereinafter referred to as a sensing diaphragm) by the sealing fixing member 70 under the valve body 10. ) And insert the discharge pressure adjusting screw 72 (hereinafter referred to as the adjusting screw) into the inner diameter side female screw 71 of the fixing member 70, and the discharge pressure adjusting spring between the adjusting screw and the sensing diaphragm 61. (73, hereinafter referred to as control spring) is interposed.

Reference numeral 301 in Figure 4 is a dotted line (not shown other than the main figure) for displaying the normal reinforcement plate, a and b will be described in the description of the operation described later, Figure 80 is a bellows.

The present invention configured as described above, as shown in Figure 2, the high pressure water coming from the valve inlet 11, such as a conventional pilot solenoid valve lifts the main valve diaphragm 20 from the toilet seat (13) It flows in between them and discharges to the valve | bulb outlet 12 through the space between the outer periphery of the extension part 52, and the toilet seat 13 as shown by the dotted arrow mark below the pram 20. FIG.

In the intermittent valve combined pressure reducing valve of the present invention, a part of the water coming from the valve inlet 11 in this process is introduced into the pressure chamber 15 through the operation water inlet 21 of one side of the diaphragm 20, and the first operation feeding oil. After passing through the outlet 31, it passes through the second operation water outlet 531 and flows out to the outlet side like a conventional pilot solenoid valve, and some water of the discharged process is passed through the sensing water inlet 172. That is, it flows into the upper portion of the sensing diaphragm 61 which serves as a discharge pressure sensor.

In this state, the water is continuously supplied from the valve inlet 11 and the water is continuously discharged unless the valve outlet is blocked. In this process, a large amount of water of high pressure comes in due to the pressure fluctuation of the valve inlet side, or the valve outlet 12 When the pressure on the discharge side is increased by reducing the discharge on the) side, the pressure of the water entering the pressure sensing chamber 60 through the detection water inlet 172 also increases, so that the detection diaphragm 61 supporting the lower part of the stem 421 is supported. ) Is pressed down and the second pilot valve 42 is lowered by the elastic spring 422 to block the second operation water outlet 531, there is no place for the water in the pressure chamber to escape. The pressure of the pressure chamber 15 is increased by the water coming from the operation water inlet 21 on one side of the valve diaphragm 20, thereby pressing down the main valve diaphragm 20 (stiffening plate 30). Dotted line above As a table shown) so acts toward narrowing the opening between the diaphragm 20 and the toilet seat 13 is reduced the flow of water discharge-side pressure is reduced again.

Thus, when the pressure on the sensing diaphragm 61 decreases again, the sensing diaphragm 61 is lifted by the elasticity of the adjustment spring 73. When the stem 421 is pushed upward, the second pilot valve fixed to the stem is pushed up. (42) reopens the second operator's water outlet 531, so that the water in the pressure chamber 15 flows out through the second operator's water outlet 531, so that the pressure in the pressure chamber 15 is lowered. The pram 20 is further lifted again by the pressure of the water coming from the valve inlet 11 so that a lot of water flows again.

Eventually, this process is repeated, while water is continuously supplied from the valve inlet and the valve outlet is open, the discharge of water is continued while maintaining a constant discharge pressure regardless of the pressure change of the incoming water.

In some cases, the use of water is not necessary, and if the valve outlet 12 is blocked (as shown in FIG. 3), the discharge pressure increases in the blocking process, and thus a high pressure is applied to the sensing diaphragm 61. As soon as the sensing diaphragm 61 is lowered to the ground and the second pilot valve 42 is lowered by the elastic spring 422, the second operation water outlet 531 is completely blocked, so that the pressure chamber 15 As the pressure increases, the main valve diaphragm 20 closes and closes to the toilet seat 13, so that the water coming from the valve inlet 11 is completely blocked, so that the pressure at the valve outlet side at which the flow stops. It is no longer high and stays constant.

On the other hand, if the valve outlet is opened again to use water, the discharge pressure is lowered, and thus the pressure applied to the sensing diaphragm 61 is also lowered. As a result, the sensing diaphragm 61 is resilient by the adjustment spring 73. When the rod 421 is pushed up, the second pilot valve 42 fixed to the stem 421 opens the second operation water outlet 531, so that the main valve diaphragm 20 is lifted as described above, and water flows again. Begins.

As such, the main valve diaphragm 20 opens and closes, so that the reinforcing plate 30 and the extension part 52 also move up and down. At this time, there is a rib 51 formed in the extension part. To help.

Referring to the method of adjusting the discharge pressure (see Fig. 2), by turning the adjusting screw 72 to the left and right, the elasticity that pushes the sensing diaphragm 61, which acts as the discharge pressure sensor, rises upward. For example, when the elasticity is less applied, the sensing diaphragm 61 is lowered even at a low pressure (that is, a low discharge pressure) applied to the sensing diaphragm 61, so that the second pilot valve 42 is second. It means that the operation water outlet 531 is blocked, thereby acting to close the main valve diaphragm 20 at a lower pressure than before adjustment so that the discharge pressure is adjusted to a low state as can be seen from the above description. I can see

Of course, if the contrary control is reversed, it is natural that the opposite phenomenon occurs, the above can be seen that it is acting as a decompression valve, which is part of the purpose of the present invention.

Now, if you look at the operation state as an intermittent valve of another object of the present invention, if the applied voltage of the solenoid 45 in the state of Figure 2 (not shown solenoid lead wire) as shown in Figure 1 the solenoid loses the magnetic force plunger When the plunger 40 is lowered by the spring 44 of the storage chamber 43 and the first pilot valve 41 fixed thereto blocks the first operation water outlet 31, the water in the pressure chamber 15 is released. Since there is no place to exit, the pressure in the pressure chamber is increased due to the water entering the operation water inlet 21, and the flow of water is blocked by acting as a normal pilot solenoid valve.

At this time, the clearance between the plunger 40 and the partition wall 161 is as small as the plunger 40 can move up and down in the storage chamber 43. The bar also has a first pilot valve (41) due to the action of the pilot solenoid valve. When the first operation water outlet 31 is slowly opened and closed, the main valve diaphragm 20 is also gradually opened and closed to prevent water hammer, which is when the plunger 40 is raised and lowered. This is possible because the plunger 40 gradually moves up and down due to the pressure increase or negative pressure that occurs briefly, and flows in and out of the flow control valve 432 on the duct 431 to make the plunger storage chamber and one side of the pressure chamber communicate with each other. It is also possible to adjust the opening and closing speed of the main valve diaphragm 20 by controlling the lifting speed of the plunger 40 by controlling the magnitude of the boost or the negative pressure generation by adjusting.

As such, the first pilot valve completely blocks the first operator's water outlet, or as illustrated in FIG. 3 of the operation as a pressure reducing valve of the present invention, the second pilot valve 42 is the second operator's water outlet ( If the 531 is completely blocked, the intermittent pressure reducing valve for the control valve of the present invention is blocked, which means that the water of the pressure chamber 15 entering the manipulation water inlet 21 is discharged to the first manipulation outlet 31 and then 2 When a series of processes of exiting the operation water outlet 531 are in series in a flow path, and the main valve diaphragm 20 is used as an intermittent valve or as a decompression valve, It is possible because it can be used in common, it can be seen that the action as an intermittent valve, which is another object of the present invention by selecting the voltage applied to the solenoid 45 and the voltage cutoff.

FIG. 4 is a view of another embodiment of the present invention. In forming the second pilot valve accommodating chamber 54, an extension 52 of the reinforcing plate 30 is provided under a reinforcing plate. In the case where the pressure chamber 15 is formed on the reinforcement plate, and the storage chamber cover 53 is structurally provided above the storage chamber 54, the center hole a of the storage chamber cover is the first operation water outlet. Role (that is, acting with the first pilot valve 41), and the central hole (b) of the reinforcing plate 30 acts as the second operation water outlet (that is, acting with the second pilot valve 42). If you note that, since those skilled in the art can easily understand that the description of its operation will be replaced by the above description of the operation already described.

In addition, as described above, the operation description and the embodiments of FIGS. 1, 2, 3, and 4 will be described. If necessary, the plunger 40, the first pilot valve 41, and the solenoid 45 may be partially removed. If it is not used, it can be easily used by a pressure reducing valve and can be easily understood by those skilled in the art.

1, 2, 3, and 4 illustrate a method of forming a pressure sensing chamber 60 by using a diaphragm to sense the discharge pressure, but instead of diaphragm, pressurize the bellows 80 as shown in FIG. 5. It is also possible to form a sensing chamber 60 so as to sense the discharge pressure, the formation of the pressure sensing chamber 60 is not limited to the above-described methods and materials.

1, 2, 3, and 4 illustrate the adjustment of the discharge pressure by adjusting the elasticity of the adjustment spring 73 by turning the adjustment screw 72, but it is sometimes necessary to adjust the discharge pressure of the pressure reducing valve. If there is, by way of adjusting the elasticity of the adjustment spring 73 in a linear motion by means of hydraulic, pneumatic, etc. instead of turning the adjustment screw, it is also possible to adjust the discharge pressure of the pressure reducing valve at any time, the above-described methods The technical idea is the same only in the method of implementation.

The present invention, which has the same configuration and operation as described above, is technically combined and configured to add pressure to the pressure control valve to the conventional solenoid valve pilot solenoid valve, thereby providing a simple configuration and low production cost. It is sure and effective in providing one-valve two-role valve (intermittent and decompressed) which is convenient because there is no water hammer.

1 is a cross-sectional view of the internal structure state before the pipe connection in the pressure reducing valve of the present invention.

Figure 2 is a cross-sectional view of the operating state when the voltage is applied to the solenoid during the fluid supply in the pressure reducing valve of the present invention,

3 is a cross-sectional view of an operation state when the valve exit is blocked in the state of FIG. 2;

4 is a cross-sectional view of another embodiment of the present invention when the second pilot valve storage chamber is provided in the upper pressure chamber of the reinforcing plate;

4A is a cross-sectional view taken along the line A-A 'of FIG.

5 is a partial cross-sectional view of the discharge pressure sensing chamber formed by bellows in another embodiment of the present invention.

(Description of the major signs used in the drawings)

17: protrusion 171: stem guide hole

172: discharge pressure sensing water inlet 31: first operating water outlet

41: first pilot valve 42: second pilot valve

421 stem 431 pipeline

432: flow control valve 52: extension portion

53: second pilot valve storage room cover 531: second operation water outlet

54: second pilot valve storage chamber 60: discharge pressure detection chamber

61: discharge pressure detecting diaphragm 72: discharge pressure adjusting screw

73: discharge pressure adjustment spring 80: pressure sensing bellows

Claims (4)

Valve body 10, main valve diaphragm 20, stiffening plate 30, the first pilot valve 41, plunger 40, elastic spring 44, valve cover 16, and solenoid 45 In a conventional pilot solenoid valve equipped with One side of the plunger storage chamber 43 and the pressure chamber 15 are connected by a conduit 431 to connect a flow control valve 432 on the conduit, and a plurality of radial ribs 51 are provided below the reinforcing plate 30. The extension part 52 of the cylindrical shape 50 provided is formed, and the storage part cover 53 which the 2nd operation water outlet 531 is opened in the center at the lower part of the extension part is airtight to the said extension part 52. In the fixing to form the second pilot valve storage chamber 54, the storage chamber 54 is accommodated in the second pilot valve 42 fixed to the stem 421, the upper part of the storage chamber 54 and An elastic spring 422 is interposed between the second pilot valve 42 and the stem is inserted into the stem guide hole 171 through the second operator outlet 531. In the central part of the valve body 10, a protrusion 17 through which the stem guide hole 171 is drilled is formed, and a pressure sensing water inlet 172 through the discharge pressure sensing chamber 60 is drilled at the bottom of the protrusion, The outer peripheral portion 611 of the discharge pressure sensing diaphragm 61 is compressed and sealed under the valve body outer center portion by a sealing fixing member 70 to form a discharge pressure sensing chamber 60, and an internal diameter side female screw of the fixing member ( 71 is inserted into the discharge pressure adjusting screw 72 of the male screw, but the pressure regulating spring 73 is interposed between the discharge pressure adjusting screw and the discharge pressure sensing diaphragm 61. The method of claim 1, In forming the discharge pressure sensing chamber (60), the pressure reducing valve for both the intermittent valve and the bellows (80) may be fixed by a fixing member (70). The method of claim 1, In the formation of the second pilot valve storage chamber (54), an intermittent valve combined pressure reducing valve that is formed alternatively under or on the reinforcing plate (30). The method according to claim 2 or 3, A pressure reducing valve without using the first pilot valve (41), plunger (40), solenoid (45), or the like.