KR100821655B1 - Composite control valve body of fluid control valve - Google Patents

Abstract

The present invention discloses a combined control valve body of a fluid control valve.

The present invention forms a main flow passage and a bypass flow passage defining a respective flow path from the inflow port and an integrated flow path formed by merging them near the discharge port, and on one side, a valve body having an assembly portion of a fluid control valve. Optionally, the stem, the stem having a linear displacement screwed to one side of the valve body case, and the respective start ports of the main flow passage and the bypass flow passage arranged in a straight line by being integrally interlocked with one end of the stem and integrally interlocked with each other. A primary valve having a valve unit for opening and closing, a secondary valve for fastening a predetermined distance vertically to one side of the valve body case facing the assembly portion of the fluid control valve to open and close the end port of the main flow path; Installed near the start port on the main flow path to filter foreign substances generated during the fluid flow It is configured to include a trainer. According to the above configuration, it can be easily carried out through the primary valve made of a single member which can be lifted to selectively switch the main flow path and the bypass flow path formed in the valve body case, so that the operability is good and rapid control. Is possible.

Description

Complex control valve body for a fluid control valve

1 is a schematic diagram showing a piping system combined with a valve and a piping line for fluid control according to the prior art,

2 is a cross-sectional view showing the configuration of a composite control valve body of a fluid control valve according to the prior art;

Figure 3 is a side cross-sectional view showing a composite control valve body of the fluid control valve according to the present invention,

4 is a view for explaining the flow according to the opening of the main flow path of the fluid in the composite control valve body of the fluid control valve according to the present invention,

5 is a view for explaining the flow according to the opening of the bypass of the fluid in the combined control valve body of the fluid control valve according to the present invention,

6 is a view for explaining the flushing (Flushing) flow of the fluid in the composite control valve body of the fluid control valve according to the present invention,

Figure 7 is a view showing the separation state of the strainer in the combined control valve body of the fluid control valve according to the present invention.

8 is a cross-sectional view showing a mounting state of a pressure reducing valve which is a kind of a fluid control valve in a complex control valve body of a fluid control valve according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: combined control valve body 10: valve body case

11: inlet port 13: outlet port

15: main euro 17: bypass euro

19: integrated flow path 20: primary valve

21: Stem 23: Handle

25: valve unit 25a: upper seat

25b: lower seat 25c: coil spring

27: spacer 30: secondary valve

31 stem 33 handle

35: secondary valve unit 37: spacer

40: strainer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite control valve body of a fluid control valve selectively coupled with various control valves for controlling fluids such as a pressure reducing valve, a hydrostatic valve, a constant flow valve, a differential pressure regulating valve, and more specifically, by a lifting operation. The present invention relates to a complex control valve body of a fluid control valve that enables a simple structure for selectively switching the main flow path and the bypass flow path, and improves the reliability of the operation.

In general, a fluid control valve for controlling a fluid may be classified into various types according to its use.

For example, when the pressure of the fluid (high pressure steam, air, gas) is higher than the intended use, the pressure is reduced, and the pressure is kept constant after the decompression, and the force is applied to the valve by dead weight, spring, diaphragm, or the like. Structured pressure reducing valves, Auto Flow Control Valves that enable accurate flow distribution regardless of pressure fluctuations in piping systems, Supply Lines and Return lines ( Differential control valves are installed between the return lines to solve the differential pressure imbalance caused by the fluctuations in the pipe load and to maintain the differential pressure to induce the stabilization of the entire piping facility, and to supply water to the water tank. It is installed on the pipe line to control the water tank to maintain constant water level at the same time and to control the closing speed of the valve to prevent water hammer phenomenon. Above a valve or the like.

These fluid control valves are subject to a common piping system.

1 is a schematic diagram showing a piping system combined with a valve and a piping line for fluid control according to the prior art.

As shown in the figure, a primary stop valve 240 for blocking flow in the primary pipe 230a and a strainer 250 for filtering out fine foreign substances generated in the flow of the fluid are respectively installed, and the secondary pipe is installed. 230b, the secondary side stop valve 260 is configured to block the flow of the working fluid discharged through the fluid control valve 210, and removes foreign substances caught by the strainer 250 or the fluid control valve 210 listed above. By bypassing the main pipe (230a, 230b) through the stop valve (240,260) for the repair and replacement of the () and bypass the fluid at the same time the bypass pipe 270 and the bypass valve 271 is required. .

However, in order to compose each piping system including a valve device for controlling a fluid, that is, a pressure reducing valve, a water level valve, a constant flow valve, a differential pressure control valve, and the like, the stop valve, the bypass valve and the strainer, and many connections between the valves Since the piping (main piping, bypass piping) is required, the material cost and installation cost according to each of the above components, in particular, the welding cost is considerable, and the joints by welding are frequently damaged by high pressure. Not only does it require repair, but also takes up a lot of installation space, there is a big disadvantage of the installation space constraints. In addition, there was a problem that must be accompanied by the installation of a separate support structure according to the weight increase by various valves and connecting pipes.

In order to solve such a problem, the present applicant has been registered by proposing an improved “complex control valve body of a fluid control valve” through Korean Patent No. 595018.

FIG. 2 is a cross-sectional view schematically illustrating a composite control valve body of a fluid control valve, which is filed by the present applicant, and the composite control valve body 100 has a valve body case 110, a double structure valve 120, and an opening / closing valve ( 130 and the strainer 140.

The valve body case 110 has a main flow path 117 that is an upper flow path from the inlet port 111 therein, and a bypass flow path 118 that is a lower flow path that does not communicate with the valve body case. An integrated flow path 119 is formed in which the 117 and the bypass flow path 118 are merged near the discharge port 113, and on the upper side, various fluids are included so that the operating range of the fluid control valve is included on the main flow path 117. It is a structure provided with the assembly part of a control valve.

The dual structure valve 120 is directly connected to the lower side of the above-described valve body case 110 to allow a certain distance vertical movement to selectively open and close each start port of the main flow passage 117 and the bypass flow passage 118. As, the bypass opening and closing valve 121 is screwed in a vertical direction from the bottom of the valve body case 110 to open and close the bypass flow path 118, the inner periphery and the screw of the bypass opening and closing valve 121 It is configured to have a main flow path opening and closing valve 123 coupled to open and close the start port of the main flow path (117).

The on-off valve 130 is screwed to the bottom of the valve body case 110 facing the fluid control valve assembly 115 so as to vertically move at a certain distance to open and close the end port of the main flow path 117. The strainer 140 is installed near the start port of the main flow path 117 to filter foreign matters generated during the fluid flow.

The composite control valve body 100 of the conventional fluid control valve having such a configuration selectively or integrally operates the bypass open / close valve 121 and the main flow channel open / close valve 123 constituting the double structure valve 120. Simultaneously operating the on / off valve 130 enables flow rate control.

However, the complex control valve body 100 of the fluid control valve, which the applicant has previously filed, has a problem in that the dual structure valve 120 has a complicated structure, inferior in operability and assemblability, and inferior in reliability of operation.

That is, the conventional dual structure valve 120 is configured such that the bypass on-off valve 121 and the main flow path opening / closing valve 123 are coupled to each other in a slide fitting structure to selectively increase and decrease the flow rate, thereby controlling the flow rate. Accordingly, since each of the on-off valves 121 and 123 must be selectively operated, there is a disadvantage in that it is difficult to operate. The bypass on-off valve 121 and the main flow path on-off valve 123 form a single body and have a slide fitting structure therebetween. Since it is not easy to assemble because it must be assembled, productivity and yield is low, there is a problem that the user has a difficulty in operating the complex structure when adjusting the valve.

The present invention was created to solve the above problems, the present invention is a simple structure by selectively connected and connected to various control valves (pressure reducing valve, water level valve, constant flow valve, differential pressure control valve, etc.) for controlling the fluid It is an object of the present invention to provide a composite control valve body of a fluid control valve that controls the flow of the working fluid.

Another object of the present invention is to provide a single structure to configure the primary valve to selectively switch the main flow path and the bypass flow by the lifting operation to improve the assembly and operability and ensure the reliability of the operation fluid control valve To provide a combined control valve body.

The composite control valve body of the fluid control valve according to the present invention for realizing the above object is formed by a main flow passage and a bypass flow passage which define respective flow paths from an inflow port, and are merged near the discharge port. A valve body case having an integrated flow path and having an assembly of a fluid control valve at one side thereof; A valve for selectively opening and closing each start port of the main flow path and the bypass flow path that are arranged in a straight line by being screwed to one side of the valve body case and coupled to and integrally interlocked with one end of the stem having a linear displacement. A primary valve having a unit; A secondary valve which is screwed to one side of the valve body case facing the assembly portion of the fluid control valve so as to be vertically moved at a predetermined distance to open and close the end port of the main flow path; It is characterized in that it comprises a strainer is installed near the start port on the main flow path for filtering foreign substances generated during the fluid flow.

As a preferable feature of the present invention, the valve body case is configured such that the start port of the main flow path and the start port of the bypass flow path are arranged opposite to each other in a direction perpendicular to the inflow port.

As another preferable feature of the present invention, the primary valve is configured to pass the flow of the appropriate flow rate to the secondary side by adjusting the opening port opening of the bypass flow path.

As another preferred feature of the present invention, the stem is coupled to the handle receiving a rotational operation force at one end that is located outside of the valve body case, the other end of the valve body case is located inside one side of the valve body case It is screwed to the tubular spacer to be fixed.

As another preferred feature of the present invention, the stem forms a stroke rod portion having a predetermined length to reduce the diameter of the other end opposite to the handle, and the valve unit slides to move linearly along the stroke rod portion. And upper and lower seat portions disposed at upper and lower intervals so as to selectively open and close the respective start ports of the bypass flow passage and the main flow passage, and coil springs provided between the upper and lower seat portions to act as an elastic support force. It is comprised in including.

As another preferable feature of the present invention, the fluid control valve connected to the assembly portion of the fluid control valve is any one of a pressure reducing valve, a water level valve, a constant flow valve, and a differential pressure control valve.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in this specification and claims are not to be interpreted in a conventional and dictionary sense, and the inventors may appropriately define the concept of terms in order to best describe their own invention. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the combined control valve body of the fluid control valve according to the present invention will be described in detail.

Figure 3 is a side cross-sectional view showing a combined control valve body of the fluid control valve according to the present invention.

As shown in the figure, the composite control valve body of the fluid control valve according to an embodiment of the present invention, the valve body case 10 and various components are installed therein while forming an outer body, and the valve body case 10 A primary valve 20 for intercepting opening and closing of each of the start passages 15s and 17s of the main passage 15 and the bypass passage 17 formed in the interior of the bypass passage 17 and the end port 15e of the main passage 15. It consists of a secondary valve 30 to control the opening and closing of the strainer 40 for filtering foreign substances generated in the fluid flow.

The valve body case 10 has an inlet port 11 for inlet of the fluid and a discharge port 13 for discharging the fluid, respectively, on both sides thereof, and a flow path of the fluid flowing from the inlet port 11 therein. The main flow passage 15 and the bypass flow passage 17, which form a portion thereof, and an integrated flow passage 19 provided by merging them near the discharge port 13 are formed.

That is, as shown in the drawing, the start port 15s of the main flow path 15 and the start port 17s of the bypass flow path 17 are disposed to face each other in the form of branching up and down based on the inflow port 11. The main flow passage 15 and the bypass flow passage 17 form a pipeline in a direction parallel to each other, and one side of the bypass flow passage 17 communicates with the main flow passage 15 near the discharge port 13. This is a structure to form an integrated flow path 19 through which fluid is discharged to the discharge port in common.

The valve body case 10 has an assembly portion 10a of the fluid control valve is formed on one side, the assembly portion 10a is a portion to which the fluid control valve is selectively mounted, the operating range of the fluid control valve is applied It is included on the main flow path 15. On the other hand, as the fluid control valve connected to the assembly portion (10a) can be installed as a pressure reducing valve (R), as shown in Figure 8, in addition to any of the water level valve, the constant flow valve, the differential pressure control valve Since such a fluid control valve is implemented by a known technique, a detailed description thereof will be omitted.

The valve body case 10 having such a configuration is provided with a primary valve 20 for determining the flow path of the main flow path 15 and the bypass flow path 17 and a secondary valve 30 for opening and closing of the end port 15e. ) Are each installed.

The primary valve 20 is a member having a linear displacement by one direction or a reverse rotation due to the structure that is screwed to one side of the valve body case 10 to improve the opening port 17s of the bypass flow path 17. It is configured to pass the proper flow of flow to the secondary side by adjusting.

That is, the primary valve 20 has a predetermined length, one end of which is exposed to the outside of the valve body case 10 and the other end of the valve body case 10, that is, the main passage 15 and the other end thereof. A stem 21 arranged to pass through each of the start ports 15s and 17s of the bypass flow path 17, a handle 23 coupled to one end of the stem 21 to receive rotational operation force from an operator, and And a valve unit provided at the other end of the stem 21 to selectively open and close the start ports 15s and 17s of the main flow passage 15 and the bypass flow passage 17 arranged in a straight line by interlocking with each other. It consists of 25.

Here, the stem 21 in the primary valve 20 is a rod having a predetermined length as shown in the drawings, and when viewed based on the drawing, the end of the valve body case 10 exposed to the upper end rotates from the operator. Handle 23 for receiving the operating force is coupled, one end is inserted and screwed into the tubular spacer 27 that is fixedly coupled to the inner side of the valve body case 10, the end side, that is, the handle 23 At the other end of the stroke), a stroke rod portion 21a having a predetermined length to reduce the diameter is formed.

On the other hand, the stroke rod portion (21a) is provided with a reduced diameter, the upper side is a structure to form a step and the lower side is provided by fastening the nut member (unsigned), this stroke rod 21a in the valve unit The 25 is coupled to the slide fitting structure so as to be liftable.

When the primary valve 20 of such a configuration rotates the handle 23 in the forward or reverse direction, the stem 21 is integrally rotated in the forward and reverse directions in association with the primary valve 20. In this case, the stem 21 is a spacer. Since it is screwed with (27), as shown in the drawing, the upward movement or the downward movement is performed, and as a result, the valve unit 25 selectively opens and closes the start ports 15s and 17s.

On the other hand, in the present invention, the valve unit 25 is fitted to slidably move along the stroke rod portion 21a provided below the stem 21 of the primary valve 20 as described above, the stem ( It is a member which selectively shields each starting port 15s and 17s of the main flow path 15 and the bypass flow path 17 by having a linear displacement in conjunction with the lifting operation of 21. As shown in FIG.

The valve unit 25 is the upper seat 25a and the lower seat, which are respective shielding members, so as to selectively shield the respective start ports 15s and 17s of the main passage 15 and the bypass passage 17. 25b is slide-fitted so as to have a linear displacement on the stroke rod portion 21a of the stem 21, and a coil spring 25c for providing an elastic bearing force is provided between the upper sheet 25a and the lower sheet 25b. Structure.

Therefore, when the stem 21 of the primary valve 20 moves upward, the nut member coupled to the lower end of the stem 21 presses and supports the lower end portion of the lower seat 25b of the valve unit 25. The lower sheet 25b is moved upward by elastically pressing the upper sheet 25a while compressing the coil spring 25c. As a result, the upper sheet 25a is a starting port of the bypass flow path 17. Block 17s).

On the contrary, when the stem 21 moves downward, the stepped portion (not shown) formed at the upper end side of the stroke rod portion 21a of the stem 21 is the upper end portion of the upper seat 25a of the valve unit 25. And the upper sheet 25a moves downward by elastically pressing the lower sheet 25b while compressing the coil spring 25c, resulting in the lower sheet 25b. The start port 15s of the main flow path 15 is blocked.

The secondary valve 30 is provided with a screw fastening to allow vertical movement of a predetermined distance on one side of the valve body case 10 facing the assembly unit 10a, and receives a manipulation force of the main flow path 15 of the main passage 15. It serves to open and close the end port 15e.

The secondary valve 30 is provided with a stem 31 having a predetermined length, the stem 31 is screwed while passing through the inner peripheral surface of the spacer 37 coupled to one side of the valve body case 10 This results in linear displacement during forward and reverse rotation. The stem 31 is coupled to the handle 33 for receiving the rotational operation force from the operator at one end side exposed to the outside of the valve body case 10 and the other end is located inside the valve body case 10 2 The differential valve unit 35 is provided.

Since the secondary valve 30 having such a configuration is implemented by a known technique, detailed description thereof will be omitted.

The strainer 40 is installed near the start port 15s on the main flow path 15 to filter foreign substances generated during the fluid flow, and is preferably detachably installed for cleaning. The strainer 40 may hinge-couple the foreign matter blocking plate to the eccentric side end of the strainer 40 to prevent foreign substances generated during operation from flowing into the valve body case 10 when the strainer 40 is cleaned. Since the strainer 40 is implemented by a known technique, detailed description thereof will be omitted.

Referring to the drawings the operation example of the combined control valve body of the fluid control valve of the present invention configured and operated as described above are as follows.

4 is a view for explaining the flow according to the opening of the main flow path of the fluid in the combined control valve body of the fluid control valve according to the present invention.

As shown in this figure, in order to generate the main flow of the fluid, the main flow path 15 should be kept open. To this end, when the handle 23 of the primary valve 20 is rotated in one direction, the stem 21 coupled to the handle 23 rotates in one direction and is screwed with the spacer 27 coupled to the valve body case 10. The fastening is moved by the fastening, and the valve unit 25 is lifted integrally in conjunction with this.

At this time, the valve unit 25 is the stem 21 is moved up, the nut member coupled to the lower end of the stem 21 is supported by the lower end of the lower seat (25b) of the valve unit 25 The lower sheet 25b elastically presses the upper sheet 25a while compressing the coil spring 25c positioned on the upper side thereof by the lifting support force. Therefore, the upper sheet 25a blocks the start port 17s of the bypass flow path 17.

On the other hand, the secondary valve 30 to maintain the state in which the end port 15e is opened by allowing the secondary valve unit 35 to move upward as in the above-described primary valve 20.

Accordingly, the fluid flows through the inlet port 11 through the start port 15s ⇒ the main flow path 15 ⇒ the end port 15e ⇒ the integration flow path 19 and finally discharges through the discharge port 13. Have

5 is a view for explaining the flow of the bypass of the fluid in the combined control valve body of the fluid control valve according to the present invention, the cleaning of the strainer 40 or the maintenance of the fluid control valve without stopping the operation of the device For the purpose of disassembling and assembling, it is necessary to bypass the fluid decompressed to the proper pressure to the secondary side.

As shown therein, the bypass flow path 17 must be switched to an open state in order to create a bypass flow of the fluid.

To this end, when the handle 23 of the primary valve 20 is rotated in the reverse direction, the stem 21 to which the handle 23 is coupled is rotated in the reverse direction and the spacer 27 is coupled to the valve body case 10. The screw is fastened to move downward, and in conjunction with this, the valve unit 25 is lowered integrally.

At this time, the valve unit 25 presses the upper end of the upper seat (25a) of the valve unit 25 by the step of the stroke rod 21a of the stem 21 by the downward movement of the stem (21). The upper sheet 25a elastically presses the lower sheet 25b while compressing the coil spring 25c positioned below by the lowering support force. Therefore, the lower seat 25b blocks the start port 15s of the main flow path 15.

On the other hand, the secondary valve 30 can be moved down the secondary valve unit by shielding the end port (15e) by rotating the handle 33 in the same direction as the primary valve 20 described above.

Therefore, the fluid flows through the inlet port 11 along the start port 17s ⇒ bypass flow path 17 ⇒ integration flow path 19 and finally discharges through the discharge port 13.

6 is a view for explaining the flushing (Flushing) flow of the fluid in the combined control valve body of the fluid control valve according to the present invention.

As shown in this figure, the flow for cleaning the inside of the pipe is shown. The start port 15s of the main flow path 15 is opened by operating the primary valve 20, while the start port of the bypass flow path 17 is opened. 17s is closed, and after operating the secondary valve 30 which completely closes the end port 15e, the ball valve bv is opened to forcibly exhaust the high pressure primary fluid pressure to the outside. The foreign substance of the out of the outside air is naturally washed.

Figure 7 is a view showing the separation state of the strainer in the combined control valve body of the fluid control valve according to the present invention. That is, as shown in the figure shows the process of picking up the strainer 40 by separating the cover (unsigned) the valve body case 10 and the screw coupled for the cleaning and replacement of the strainer (40).

On the other hand, the present invention is not limited to the described embodiments, it is obvious to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

The composite control valve body of the fluid control valve configured and operated as described above is provided through a single member primary valve provided to be capable of lifting in selectively switching the main flow path and the bypass flow path formed in the valve body case. Since it can be easily performed, operability is good and quick control is possible.

In particular, as it is provided in a simpler structure than the conventional, it is possible not only to reduce the production cost of production, but also to provide an advantage of expecting improved assembly and productivity.

Claims (6)

A main body and a bypass flow path defining the respective flow paths from the inflow port, and an integrated flow path formed by joining near the discharge port, and a valve body case having an assembly of a fluid control valve on one side; A valve for selectively opening and closing each start port of the main flow path and the bypass flow path that are arranged in a straight line by being screwed to one side of the valve body case and coupled to and integrally interlocked with one end of the stem having a linear displacement. A primary valve having a unit; A secondary valve which is screwed to one side of the valve body case facing the assembly portion of the fluid control valve so as to be vertically moved at a predetermined distance to open and close the end port of the main flow path; It is installed near the start port on the main flow path includes a strainer for filtering foreign substances generated during the fluid flow, The stem is coupled to a handle that receives a rotational operation force at one end that is located outside the valve body case, the other end that is located inside the valve body case is screwed to the tubular spacer is fixed to the inner side of the valve body case The lower portion of the stem is formed with a stroke rod for reducing the diameter of the other end opposite to the handle, The valve unit is slide-fitted so as to be linearly moved along the stroke rod portion, and the upper and lower seat portions and the upper and lower seat portions arranged at upper and lower intervals so as to selectively open and close each start port of the bypass flow passage and the main flow passage. Composite control valve body of a fluid control valve, characterized in that consisting of a coil spring provided between the acting elastic support. The combined control valve of the fluid control valve of claim 1, wherein the valve body case is configured such that a start port of the main flow path and a start port of the bypass flow path are disposed to face each other in a direction perpendicular to the inflow port. body. The method of claim 1, wherein the primary valve, The control valve body of the fluid control valve, characterized in that configured to pass the flow of the appropriate flow to the secondary side by adjusting the opening of the start port of the bypass flow path. delete delete The fluid control valve body of claim 1, wherein the fluid control valve connected to the assembly portion of the fluid control valve is any one of a pressure reducing valve, a water level valve, a constant flow valve, and a differential pressure control valve. .

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