KR200427051Y1 - The double valve - Google Patents

Abstract

The present invention relates to a double valve in which a pair of blocking members operable individually in one valve housing are coupled back and forth along a flow direction of a fluid.

The double valve of the present invention, the valve housing 11 is provided with flanges for pipe connection at both ends; A pair of rotating shafts 12 rotatably coupled to both sides of the valve housing 11 and having a handle H at an upper end thereof; The valve housing 11 is composed of a pair of blocking members 13 coupled to each rotating shaft 12.

The double valve of the present invention, as well as more completely block the flow of the fluid, there is an advantage that can be easily carried out as needed, periodic maintenance.

Valve, Double Valve, Butterfly Valve, Ball Valve

Description

The double valve

1 is a perspective view of a double valve of a first embodiment of the present invention;

Figure 2 is a schematic cross-sectional structural view of a double valve in the first embodiment of the present invention.

3 is a schematic cross-sectional structural view of a double valve of a second embodiment of the present invention;

4 shows a double valve of the third and fourth embodiments of the present invention,

  (A) is a schematic cross-sectional structural diagram of a double ball valve,

  (B) is a schematic cross-sectional structure diagram of a composite double valve.

         ((Explanation of symbols for main part of drawing))

       1. butterfly valve 2. ball valve

       11. Housing 12. Shaft

       13. Blocking member 13 '. Disc block

       13 ". Ball Type Barrier 13-1. Double Barrier

       F. Flange H. Handle

       h. Joiner O. Through Hole

According to the present invention, a pair of individually actuated shutoff members are coupled to each other in a valve housing having flanges for connection to pipes at both ends, before and after along a flow direction of the fluid, thereby providing a fluid inside the valve. In addition, it is possible to completely shut off the secondary and at the same time, it is easy and easy to repair or replace the valve through which the fluid flows by using the blocking member on the side where the fluid flows when the blocking member on the fluid flow side fails. So that it relates to a double valve.

Modern society is an urban society. The most basic precondition for the existence of a city where many people gather collectively is the supply of drinking water. The smooth supply of drinking water has become the most basic precondition for the existence of the city. It is largely based on the various pollutions brought together.

In other words, in the old city before the modern city was established, the surrounding environment was not contaminated, and the groundwater such as wells was clean everywhere, and the nearby river could be used as drinking water. Except for the supply of drinking water there was no big problem.

However, with industrialization, various sewage water discharged from factories around the city and the amount of daily sewage generated from various daily necessities increase and contaminate groundwater and river water flowing in the city. It is almost impossible to find drinking water at.

Therefore, today's urban drinking water is rivers or lakes that are located some distance from the city, that is, with little or no contaminant inflow, which are collected from them, co-disinfected in the water purification plant, and then supplied to drinking water. Bar water is collected in this way, and in order to supply it as drinking water after sterilizing it, tap water pipes are required.

The water supply pipe as described above has a very long pipe length, and according to long-term use, partial replacement of pipes is required continuously due to deposition of various foreign matters contained in the water or deterioration or damage of the pipe itself.

Therefore, water supply shut-off valves are generally installed in various places of the water supply pipes for the purpose of pipe replacement and repair, and in order to prevent unnecessary water leakage when performing pipe replacement or various constructions, and to provide temporary piping as necessary. Multiple valves are coupled onto the water pipe.

By the way, when the valve coupled to the water pipe passage as described above is locked or partially open, the valve is subjected to a considerable hydraulic pressure, the aging of the valve proceeds by this hydraulic pressure.

In other words, the supply of water through the water supply pipe is made between the supply source and the demand source, which are separated by a considerable distance, and thus, a considerable amount of supply pressure is required for the water supplied from the supply source to reach the demand source while maintaining proper water pressure. It becomes

Therefore, when the valve is locked, the pressure applied to the valve is very large, and in the open state, the wear of the contact surface is inevitable due to friction with water, so that the valve ages, so that the piping as well as the valve are repaired or replaced at regular intervals. Should be done.

In addition, in recent years, in addition to the above water supply pipes, large pipelines for transporting fluids, such as water pipes, oil pipes, or gas pipes, have been installed throughout the country beyond water pipes, and many valves are installed in such large pipes. As high pressure is applied like a valve installed in a water supply pipe, wear due to friction with a fluid is inevitable.

As described above, the role of the valve, which is essential for various large pipelines, is to block or regulate the flow of the fluid as necessary, and when the flow of the fluid is blocked, the flow of the valve must be completely blocked, and the replacement cycle is It should have sufficient durability to be extended as possible, the conventional valves are as follows.

In the case of the butterfly valve, which is a representative valve, a double butterfly valve has been developed in which a single fluid blocking disk consisting of one sheet and two disks are connected in parallel to each other in order to improve durability and blocking force of the disk to block the flow of fluid.

As described above, a number of double butterfly valves are described in Korean Utility Model Publication No. 1994-0004410, Korean Registered Utility Model Publication No. 20-0353377, and the like. In the conventional double butterfly valve, two disks are parallel to each other. As a structure that works together in a state coupled to the same axis. Since the fluid is blocked by the two disks, the efficiency of the fluid flow blocking can be improved. However, since the two disks work together like a single disk, the effect on the durability is minimal.

In addition, even when two disks are coupled together, it is difficult to precisely and precisely control the flow pressure and amount of the fluid.

The present invention was devised to solve all the problems of the conventional valve having a single operation structure, which can prolong the life of the valve, more precisely control the flow pressure and amount of the fluid, and make maintenance easier. It is an object of the present invention to provide a double valve that can.

The object of the present invention is achieved by a pair of blocking members, each capable of individual operation.

The double valve of the present invention has a technical feature of having a pair of blocking members operable independently of each other, inside the valve housing connecting the pipe and the pipe.

That is, the double valve of the present invention, the housing that serves as a connecting member between the pipe; Composed of a pair of blocking members, etc. coupled to the inside of the housing, a pair of blocking members capable of operating independently of each other is structurally characterized by being coupled to the front and rear adjacent to the inside of one valve housing along the flow direction of the fluid.

In this case, the front and rear are defined as "rear" as the side near the source of the fluid, that is, the side through which the fluid flows when viewed from any one of the flow paths, and the "rear" as the side through which the fluid flows. do. For example, when fluid flows from left to right, the left side is referred to as the front and the right side as the back when comparing relative positions.

In the double valve of the present invention, a blocking member for blocking or regulating the flow of the fluid is adjacently coupled forward and rearward along the flow direction of the fluid, and each blocking member is a structure that can be individually operated, and is fully open or fully closed. Except when blocked, by adjusting the opening degree of the front and rear blocking members, it is possible to appropriately distribute the pressure of the fluid applied to each blocking member according to the situation.

That is, by adjusting the size of the projection area of each blocking member perpendicular to the flow direction of the fluid, the pressure applied to the rear blocking member can be adjusted larger or smaller than the front blocking member, and the same size pressure is applied to the two blocking members. You can adjust it as well.

For example, if the front blocking member is completely blocked, the pressure of all the fluid is applied to the front blocking member, but if the rear blocking member is completely blocked when the front blocking member is fully opened, the pressure of the fluid is all blocked backward. The member is caught.

Therefore, when the double valve of the present invention does not completely open the flow of the fluid, by adjusting the opening degree of each of the front and rear blocking members, it is possible to adjust the magnitude of the pressure applied to each blocking member equally or differently. .

As described above, the most preferable method of using the double valve of the present invention that can adjust the magnitude of the hydraulic pressure respectively applied to the front and rear blocking members is to apply a small pressure or almost no pressure to the front vehicle end member as much as possible. While avoiding, most pressure is applied to the rear blocking member.

That is, by using the above method, the load on the rear blocking member is applied to the rear blocking member more than the front blocking member, so that the wear or damage of the rear blocking member is promoted more than the front blocking member. In case of abnormality, the rear blocking member can be easily and simply repaired or replaced while the pipe is blocked by the front blocking member.

In addition, since the front blocking member is hardly aging as compared with the conventional single valve, the front blocking member can be easily repaired only in the period similar to the maintenance period of the conventional single valve.

The details of the purpose and technical constitution according to the present invention, including the effect thereof, will be clearly understood by the following description with reference to the drawings showing preferred embodiments of the present invention.

The perspective view of the double valve of this invention in FIG. 1 is sectional structural drawing in FIG.

As shown, the double valve of the present invention,

A valve housing 11 that provides a passage through which fluid flows from one side to the other side, and has an annular flange F formed through a plurality of coupling holes h for connecting pipes at both ends;

A pair of rotary shafts 12 rotatably coupled in a direction perpendicular to an axial direction of the fluid passage from the outside of each of the valve housings 11 to the inside, and having a handle H at an outer upper end thereof;

The valve housing 11 is coupled to each of the rotating shafts 12, and integrally rotated together with the rotating shaft 12 by a handle H of the upper end of the rotating shaft 12, and an outer circumferential surface thereof is in close contact with the inner surface of the valve housing 11. It consists of a pair of blocking member 13, etc.

At this time, instead of having flanges F at both ends of the valve housing 11, a screw thread may be formed on the inner circumferential surface or the outer circumferential surface of both ends, so that the pipe may be screwed together. For buried pipelines, flanges are generally suitable for small pipelines such as homes and apartments.

The double valve of the present invention configured as described above, the pair of blocking members 13 can be operated independently of each other, and the pressure of the fluid applied to each of the blocking members 13 is controlled differently by such individual operations. It becomes possible.

For example, assuming that the fluid flows from left to right in FIG. 2, the blocking member located on the opposite side becomes the front blocking member, and the blocking member located on the right becomes the rear blocking member. When all of the blocking members are completely opened, each blocking member is in a state in which little pressure of the fluid is applied.

In such a state, when it is necessary to control the flow of the fluid, if the flow of the fluid is adjusted as the rear blocking member rather than the front blocking member, the pressure of the fluid is concentrated only on the rear blocking member, the flow of the fluid is blocked If the valve of the present invention is used in such a manner over a long period of time without the state, only wear or damage of the rear blocking member, not the front blocking member is caused.

Therefore, when the rear blocking member needs to be repaired or replaced, the rear blocking member can be properly repaired at a necessary time in a state where the flow of the fluid is blocked as the front blocking member.

In addition, in the case of blocking the flow of the fluid, the first blocking of the fluid as the front blocking member and the second blocking of the fluid as the rear blocking member can further block the flow of the fluid.

In addition, in the case of FIGS. 1 and 2, an example of the butterfly valve 1 in which the blocking member 13 is a disc shaped blocking member 13 ′ is shown. As shown in FIG. In addition, a ball valve 2 having a ball-shaped blocking member 13 "having a through hole O penetrating the center may be doubled, and a ball valve 2 and a butterfly valve 1 may be combined together. It can also be configured as a valve.

In addition, in the case of the disk-shaped blocking member 13 ′, as shown in FIG. 4, at least one side of the disk blocking member 13 ′ coupled with two disk-shaped blocking members 13 ′ parallel to each other ( 13-1).

As described above, the double valve of the present invention, the load can be freely adjusted between the valve bar, it is possible to induce the replacement or maintenance of the valve to the rear valve by using a large load on the rear valve normally, When the valve is repaired, it is possible to cut off the flow of fluid by using the development valve, so that the maintenance can be performed whenever necessary regardless of the repair time, and the advantage that the flow of the fluid can be more completely blocked by the two valves. There is this.

Claims (3)

Valve housings 11 each having flanges F for connecting with pipes at both ends; A pair of rotating shafts 12 rotatably coupled inwardly from the outside of each of both sides of the valve housing 11; Double valve, characterized in that coupled to each of the rotating shaft (12) inside the valve housing (11), the outer peripheral surface comprises a pair of blocking members (13) in close contact with the inner surface of the valve housing (11). 2. The double valve according to claim 1, wherein each blocking member (13) is one of a disc blocking member (13 ') and a ball blocking member (13 "). The method according to claim 1, wherein at least one of the pair of blocking members 13 is a double blocking member 13-1 in which a pair of disk-shaped blocking members 13 'parallel to each other is coupled. Double valve.

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