Fluid blocking connection valve

Abstract

The present invention relates to a valve for fluid shut-off connection for pipe maintenance, and more specifically, to a valve housing having an inlet and an outlet formed on both sides, and a disc seated on a seating portion that penetrates a flow path between the inlet and the outlet, with water passage holes drilled on the side and bottom surfaces of the disc so that high-pressure fluid flowing in from the inlet can be introduced through the water passage holes on the side and discharged through the water passage holes on the bottom surface to lower the pressure of the incoming fluid, thereby reducing the pressure difference between the inlet and the outlet, so that the central axis of the disc can be easily inserted into the fixing groove of the valve housing to facilitate the disc closing process.

Description

Technology Field

[0001] The present invention relates to a valve for fluid shut-off connection for pipe maintenance, and more specifically, to a valve housing having an inlet and an outlet formed on both sides, and a disc seated on a seating portion that penetrates a flow path between the inlet and the outlet, with water passage holes drilled on the side and bottom surfaces of the disc so that high-pressure fluid flowing in from the inlet can be introduced through the water passage holes on the side and discharged through the water passage holes on the bottom surface to lower the pressure of the incoming fluid, thereby reducing the pressure difference between the inlet and the outlet, so that the central axis of the disc can be easily inserted into the fixing groove of the valve housing to facilitate the disc closing process. Background Technology

[0003] Generally, water pipes consist of a large-diameter main pipe that transports a large volume of water over long distances and branch pipes that branch off from the main pipe and are used for relatively short-distance transport to supply water to buildings such as homes and offices. Valves must be installed in the branched pipes to allow for the interruption of water supply, thereby making it easier to work by shutting off the water supply when replacing aging water pipes or valves in the future.

[0004] However, since work is carried out after shutting off all valves installed around the replacement point to cut off the water supply to the pipes or valves at the replacement site, there is a problem with the wide scope of the water cutoff. Furthermore, when the water supply is cut off to replace pipes or valves, it causes inconvenience and losses to households and various industrial facilities, as well as disrupts daily life. Additionally, if operations are conducted under emergency conditions, complaints arise due to leaks, and severe corrosion of valves and pipes makes it difficult to shut off the water supply without interruption.

[0005] Accordingly, non-stop valves are being installed to allow for the replacement of water pipes or valves without cutting off the water supply.

[0006] Conventional non-stop valves are installed in existing pipes, such as water supply or sewage pipes, which are buried underground and form a flow path for fluid transport. They are designed to control the flow path and block the path during cleaning, repair, or branching work on water supply or sewage pipes. Such a non-stop valve comprises a valve housing equipped with flanges on both the left and right sides for connection with the underground pipe and an internal flow path connecting the flanges; and a disc that moves vertically within the valve housing in response to user operation to open and close the flow path formed inside the valve housing.

[0007] Furthermore, Korean Registered Patent No. 10-2629407, "Integrated Multifunctional Non-stop Valve Responding to Regulations of the Enforcement Decree of the Water Supply Act," is a conventional non-stop water valve comprising a valve body having a lower body to which a pipeline is connected and an upper body connected to the top of the lower body, and a valve disc installed vertically inside the valve body to block or open the pipeline connected to the lower body by vertical movement. It is provided with first and second connecting guide bodies on both sides of the upper part of the valve body, respectively communicating with the interior of the valve body, first and second connecting pipes communicating with the first and second connecting guide bodies, first and second drainage valve bodies for draining water flowing in through the valve body, an air valve body connected to the first or second connecting pipe to exhaust internal air of the valve body to the outside, and a turbidity meter for measuring the turbidity of the water flowing into the valve body. Since many components are added, sufficient space must be secured for the installation of these components. However, in the case of branch pipes, rather than existing as a single pipe, multiple pipes are arranged around it like a net. There is a risk that the multiple components forming the valve body, which are intertwined, may interfere with adjacent pipes, and it is often difficult to secure installation space.

[0008] In addition, if these multiple components are buried underground for at least 10 to 30 years in a form protruding from the outside of the pipe, there is a risk that the valve body may malfunction as the protruding valve opening and closing mechanism rotates due to external force, and the metal body may corrode due to acidic components in the ground, causing small gaps and resulting in leakage.

[0009] In addition, due to changes in temperature during the summer and winter, metal bodies expand or contract, causing gaps in external connections and increasing the risk of leakage. As this happens repeatedly, leakage occurs at the joints. Furthermore, if cold temperatures are transmitted into the pipe through the joints, it causes cracks in the pipe. Prior art literature

[0011] KR 10-2629407 (B1) 2024.01.22.KR 10-2553736 (B1) 2023.07.05.KR 10-2022-0097618 (A) 2022.07.08. The problem to be solved

[0012] To solve the aforementioned problems, the objective of the present invention is to...

[0013] The present invention provides a valve for fluid shut-off connection that facilitates the closing process of the disc by allowing the disc's central axis to easily enter the fixing groove of the valve housing, by reducing the pressure difference between the inlet and the outlet, and by providing a valve housing formed with an inlet and an outlet on both sides, and a disc that is seated in a seated portion by penetrating a flow path between the inlet and the outlet, with water passage holes drilled on the side and bottom surfaces, so that high-pressure fluid entering from the inlet can be introduced through the water passage holes on the side and discharged through the water passage holes on the bottom surface.

[0014] Another objective of the present invention is to provide a fluid-blocking connection valve in which a first water passage hole formed on the side of the disc is connected to a second water passage hole extending to the bottom surface, thereby discharging fluid flowing in with strong water pressure through the second water passage hole and discharging foreign matter accumulated in the seating portion to the outlet portion, thereby strengthening the connection between the disc and the seating portion.

[0015] Another objective of the present invention is to provide a fluid shut-off connection valve in which the outer surface of the disc is formed as a tapered surface in the flow path provided between the inlet and outlet, and the disc closes the flow path and achieves complete shut-off.

[0016] Another objective of the present invention is to provide a fluid shut-off connection valve that is connected to and perforated on the side and bottom surfaces of the disc, and has a smaller diameter for the water passage hole on the bottom surface to allow for discharge with stronger water pressure from the bottom surface, thereby enabling easy removal of foreign matter inserted into the foreign matter guide groove of the valve housing seating portion before the disc is coupled.

[0017] Another objective of the present invention is to provide a fluid shut-off connection valve that facilitates disc opening by reducing the repulsive force caused by water pressure through a water passage hole by discharging the strong pressure of the fluid entering during the initial disc opening after the leak prevention operation is completed to the bottom surface of the valve housing. means of solving the problem

[0019] To achieve the above-mentioned purpose, the present invention relates to a valve for blocking fluid for pipe maintenance, comprising: a valve housing (110) having an inlet (111) and an outlet (112) formed on both sides, a flow path (113) formed between the inlet (111) and the outlet (112), a guide portion (114) protruding upward above the flow path (113), and a seating portion (115) formed lower below the flow path (113) and lower than the inlet (111); and a cylindrical disc (120) that moves up and down along the guide portion (114) of the valve housing (110) to open and close the flow path (113), is seated on the seating portion (115), and has a central axis (124) protruding from the center of the bottom surface; wherein a fixing groove (115a) into which the central axis (124) is inserted and fixed is formed in the seating portion (115); A first water passage hole (122) spaced apart from each other is formed on the side of the disk (120), and a second water passage hole (123) is formed inside the disk (120) connected to the first water passage hole (122) and penetrating to the bottom surface of the disk (120).

[0020] The present invention involves inserting the operating key shaft (131) of an operating key (130) through an operating key shaft insertion groove (125) that is open on the upper part of the disk (120) inserted into the guide part (114) of the valve housing (110), and the disk (120) moves up and down by the rotation of the operating key (130) to open and close the flow path (113).

[0021] The present invention uses an operating key (130) inserted through the guide portion (114) of the valve housing (110) to rotate the disc (120) seated on the seating portion (115) to raise it upward, thereby opening the flow path (113), and sealing the open upper portion of the guide portion (114) with a shielding plug (140).

[0022] In the present invention, the disc (120) has a tapered outer surface exposed to the flow path (113) and is threadless.

[0023] The diameter of the second water passage hole (123) of the present invention is smaller than the diameter of the first water passage hole (122).

[0024] The second water passage hole (123) and the first water passage hole (122) of the present invention are connected one-to-one.

[0025] The second water passage hole (123) of the present invention is connected to a plurality of first water passage holes (122), and the second water passage holes (123) are not formed on the same circumference.

[0026] The disk (120) of the present invention descends along the guide portion (114) and, when closing the flow path (113), discharges the fluid flowing from the inlet portion (111) into the first water passage (122) into the second water passage (123); the fluid discharged from the second water passage (123) descends toward the seating portion (115) and removes foreign matter from the foreign matter guiding groove (115b) formed around the seating portion (115) and the fixed groove (115a). Effects of the invention

[0028] Accordingly, the fluid shut-off connection valve of the present invention comprises a valve housing having an inlet and an outlet formed on both sides, and a disc that is seated in a seated portion by penetrating the flow path between the inlet and the outlet, having water passage holes drilled on the side and bottom surfaces, so that high-pressure fluid flowing in from the inlet can be introduced through the water passage holes on the side and discharged through the water passage holes on the bottom surface, thereby lowering the water pressure of the incoming fluid and reducing the pressure difference between the inlet and the outlet, so that the central axis of the disc can be easily inserted into the fixing groove of the valve housing, thereby facilitating the disc closing process.

[0029] In addition, the present invention has the effect of strengthening the connection between the disc and the seating portion by connecting a first water passage hole formed on the side of the disc to a second water passage hole extending to the bottom surface, thereby discharging fluid flowing in with strong water pressure through the second water passage hole and discharging foreign substances accumulated in the seating portion to the outlet portion.

[0030] In addition, the present invention has a flow path provided between the inlet and outlet sections, wherein the outer surface of the disc is formed as a tapered surface and there are no screw threads, so that the disc closes the flow path and complete sealing is achieved.

[0031] In addition, the present invention has the advantage of easily removing foreign matter trapped in the foreign matter guiding groove of the valve housing seating portion before the disc is assembled by perforating the side and bottom surfaces of the disc so as to be connected to each other, while making the diameter of the water passage hole on the bottom surface smaller so that it is discharged with stronger water pressure from the bottom surface.

[0032] In addition, the present invention has the effect of facilitating the opening of the disc by reducing the repulsive force caused by water pressure, by discharging the strong pressure of the fluid entering during the initial opening of the disc through the water passage hole to the bottom surface of the valve housing after the leak prevention work is completed. Brief explanation of the drawing

[0034] FIG. 1 is a perspective view of a fluid shut-off connection valve of the present invention in a coupled state, and FIG. 2 is a perspective view of the fluid shut-off connection valve of the present invention in a separated state, and FIG. 3 is a cross-sectional view of a valve for fluid shut-off connection according to the present invention, and FIG. 4 is a diagram showing the state of inserting an operating key into the fluid shut-off connection valve of the present invention and rotating the disc to seat it in the seating portion. FIG. 5(a) is a perspective view of a disc in a fluid shut-off connection valve of the present invention, and FIG. 5(b) is a cross-sectional view of a disc in a fluid shut-off connection valve of the present invention, and FIG. 6 is a diagram showing the state in which fluid is discharged through a water passage hole and foreign substances are removed in the fluid shut-off connection valve of the present invention, and FIG. 7 is a diagram showing the state in which fluid is discharged through a water passage hole in a fluid shut-off connection valve of the present invention, and FIG. 8 is a diagram showing the state in which the disc is lowered and closed in the fluid shut-off connection valve of the present invention, and FIG. 9 is a diagram showing the state in which the disc rises in the fluid shut-off connection valve of the present invention and fluid is sprayed through the water passage hole to open easily. FIG. 10 is a flowchart showing the flow of the main pipe and branch pipe buried underground according to the present invention. Specific details for implementing the invention

[0035] Hereinafter, preferred embodiments of the present invention are described with reference to the accompanying drawings so that those skilled in the art can easily implement them.

[0037] As shown in FIGS. 1 to 8, the present invention relates to a fluid shut-off connection valve (100) for shutting off fluid for pipe maintenance,

[0038] A valve housing (110) having an inlet (111) and an outlet (112) formed on both sides, a flow path (113) formed between the inlet (111) and the outlet (112), a guide part (114) protruding upward on the upper part of the flow path (113), and a seating part (115) formed on the lower part of the flow path (113) that is recessed lower than the inlet (111);

[0039] It includes a cylindrical disc (120) that moves up and down along the guide portion (114) of the valve housing (110) to open and close the flow path (113), and after closing the flow path (113), descends further to be seated on the seating portion (115), and has a central axis (124) protruding from the center of the bottom surface.

[0040] A fixing groove (115a) is formed in the above-mentioned seating portion (115) to which the central axis (124) is inserted and fixed, and

[0041] A plurality of first water passage holes (122) spaced apart from each other are formed on the side of the disk (120), and a second water passage hole (123) is formed inside the disk (120) and connected to the first water passage holes (122) to penetrate to the bottom surface of the disk (120).

[0043] As shown in FIG. 10, a branch pipe is branched from a large-diameter main pipe to supply water (fluid) to scattered first, second, and third consumers, and a main valve is provided in the main pipe. In the event of a leak at a specific point in the branch pipe leading to the third consumer, conventionally, the main valve of the main pipe is closed, causing inconvenience due to the water cutoff to the first, second, and third consumers. However, the present invention allows normal supply to be maintained by not closing the branch pipe leading to the first and second consumers, and allows for quick repair and maintenance of the leak by closing only the branch pipe leading to the third consumer.

[0044] Branch pipes are buried underground, and there are often many pipes intertwined like a net around the branch pipe that is the subject of the leak. Consequently, there were problems such as difficulty in securing space and the maintenance work taking a long time when preventing interference and damage to other pipes and repairing only the branch pipe where the leak occurred. Therefore, the present invention allows the tip of the branch pipe (pipe) where the leak occurred to be cut, thereby enabling the rapid installation of a valve that opens and closes the branch pipe leading to the third consumer without interference with other adjacent pipes. The fluid shut-off connection valve (100) of the present invention remains buried underground even after the leak repair work is completed.

[0046] The fluid blocking connection valve (100) of the present invention comprises a valve housing (110) and a disc (120) for opening and closing a flow path (113) formed inside the valve housing (110), so as to be able to quickly block or control the flow of fluid flowing inside the pipe to block water. In the present invention, opening and closing the valve housing (110) is the same as opening and closing the flow path (113) using the disc (120), and the fluid refers to water supplied through the valve.

[0047] In the present invention, the front end direction refers to the direction toward the inlet (111) into which fluid flows in, and the rear end direction refers to the direction toward the outlet (112) into which fluid flows out.

[0048] The above valve housing (110) has an inlet section (111) and an outlet section (112) formed symmetrically on both sides, and an inlet pipe coupling section (150) into which an inlet pipe (151) into which fluid is introduced is coupled to the inlet section (111) on the front side, and an outlet pipe coupling section (160) into which an outlet pipe (161) separated from the inlet pipe (151) is inserted is coupled to the outlet section (112) on the rear side.

[0049] In order to install the fluid shut-off connection valve (100) of the present invention as described above, the leading end of the pipe where leakage has occurred is cut off, and the inlet pipe (151) on the leading end side through which fluid flows in and the outlet pipe (161) on the trailing end side through which fluid flows out are connected by connecting them using the inlet pipe connecting part (150) and the outlet pipe connecting part (160), respectively.

[0050] The above-mentioned inlet section (111) and outlet section (112) are arranged in a horizontal direction to facilitate connection with the piping, namely the inlet pipe (151) and the outlet pipe (161).

[0052] The fluid blocking connection valve (100) of the present invention is connected to the inlet (111) and outlet (112) by cutting the pipe. As it is connected to the existing pipe, fluid flows in and out through the inlet (111) and outlet (112), and a water block is applied to prevent leakage. Just before the disc (120), which descends along the guide section (114) for the water block, closes the flow path (113), the gap in the flow path (113) narrows, and strong pressure is generated laterally on the disc (120) by the incoming fluid.

[0053] The present invention is intended to perform leak repair work without closing the main pipe, and the fluid pressure in the branch pipe, which must transport water to the household, is also considerably high. In particular, when the disc (120) is lowered to perform leak repair work, a large pressure difference is created between the inlet (111) and the outlet (112) due to the gap in the flow path (113) that narrows, making it difficult to close the flow path (113).

[0054] Accordingly, the present invention forms a first water passage (122) and a second water passage (123) connected to each other on the side and bottom surfaces of the disk (120) to facilitate closing the flow path (113), and when the disk (120) closes the flow path (113), the fluid introduced through the first water passage (122) is discharged through the second water passage (123), thereby dispersing a portion of the pressure applied in the side direction of the disk in the up and down direction, so that the water pressure of the fluid applied to the disk (120) can be lowered, thereby making the pressure difference between the inlet part (111) and the outlet part (112) small, and thus making the closing process of the disk (120) easier.

[0055] In this way, the valve housing (110) has a flow path (113) formed in the center between the inlet section (111) and the outlet section (112), that is, between the inlet section (111) and the outlet section (112), and a guide section (114) is formed protruding above the flow path (113), and a seating section (115) is formed below the flow path (113) that is recessed lower than the inlet section (111).

[0056] The above-mentioned fluid path (113) is a path through which fluid moves and is a space that is opened and closed by the disk (120).

[0057] As shown in FIG. 2, the guide portion (114) has a second screw thread (114a) formed along its inner surface corresponding to a first screw thread (121) formed on the upper outer surface of the disk (120) so that the disk (120) is inserted into the valve housing (110) and moves up and down smoothly, and as shown in FIG. 3, the seating portion (115) is formed in an inwardly concave shape so that the lower part of the disk (120) is seated.

[0058] In addition, the guide portion (114) has a third screw thread (114b) formed along the upper outer surface so that a shielding plug (140) for closing the open upper surface is coupled thereto.

[0059] The above-mentioned seating portion (115) has a fixing groove (115a) formed therein, into which a central axis (124) protruding from the bottom surface of the disk (120) is inserted and fixed, and foreign matter guiding grooves (115b) spaced at regular intervals along the circumference of the fixing groove (115a) are formed.

[0060] The above fixing groove (115a) serves to hold the central axis (124) so ​​that the disk (120), into which the central axis (124) of the disk (120) is inserted and subjected to a repulsive force, does not bend. The above foreign matter guiding groove (115b) is a groove formed spaced apart from the outer surface of the fixing groove (115a) so that foreign matter does not enter the fixing groove (115a) but is guided from the seating portion (115) to the outside of the fixing groove (115a). The above foreign matter guiding groove (115b) may be formed as a plurality of circular rim grooves larger than the fixing groove (115a). During the process of inserting pipes into the inlet portion (111) and the outlet portion (112), a large number of foreign matter may flow into the inlet portion (111), and such foreign matter may accumulate in the seating portion (115) which is recessed downwards, and the foreign matter accumulated in the seating portion hinders the complete descent of the disk (120). The present invention forms a foreign substance guiding groove (115b) to prevent foreign substances from entering, in particular, into a fixed groove (115a) coupled with a central axis (124).

[0061] If foreign matter accumulates in the fixed groove (115a), the central axis (124) of the disk (120) may not be fully inserted into the fixed groove (115a), or the lower part of the disk (120) may not be fully inserted into the seating portion (115), resulting in a gap between the lower part of the disk (120) and the seating portion (115). In this way, if a gap is created between the lower part of the disk (120) and the seating portion (115), the disk (120) cannot seal the flow path (113) and thus cannot achieve complete sealing. Accordingly, the present invention ensures that when the disk (120) descends, foreign matter does not enter the fixed groove (115a) but is guided to the foreign matter guiding groove (115b), so that even if foreign matter is introduced, the central axis (124) can be inserted into the fixed groove (115a) and the disk (120) can be fully inserted into the seating portion (115) without interference from the foreign matter.

[0062] In addition, as illustrated in FIG. 6, when the disk (120) is rotated by the operating key (130) and descends along the guide section (114) and the flow path (113), and foreign matter accumulates on the seating section (115) before being inserted into the seating section (115), the foreign matter accumulated on the seating section (115) is removed from the seating section (115) by the fluid flowing into the first-1 water passage (122a), which is open toward the inlet section (111) among the first water passages (122), and discharged through the second-1 water passage (123a). In this way, cleaning can be performed to remove foreign matter accumulated on the seating section (115) before the disk (120) descends and is inserted into the seating section (115).

[0063] In particular, when the disk (120) descends, the width of the flow path (113) narrows, and the water pressure of the incoming fluid increases. Consequently, the pressure of the fluid discharged through the second water passage (123) is further increased, thereby greatly improving the ability to remove foreign substances from the seating portion (115). As described later, if the diameter of the second water passage (123) is made smaller than that of the first water passage (122), the water pressure increases, thereby increasing cleaning efficiency. Furthermore, if the direction of the second water passage (123) is formed by dividing it into a central axis (124) and an outer direction rather than a single circumference, the entire seating portion (115) can be cleaned. In the present invention, the cleaning of foreign substances from the seating portion (115) can be performed continuously from the moment the disk (120) descends until the flow path (113) is closed.

[0064] In the present invention, the first water passage hole (122), the first-1 water passage hole (122a), and the first-2 water passage hole (122b) are described, but this is a representation based on location, and when indicated collectively, it is referred to as the first water passage hole (122), and the second water passage hole (123), the second-1 water passage hole (123a), and the second-2 water passage hole (123b) are also the same.

[0066] In addition, when the above disk (120) descends to close the flow path (113), the pressure difference between the inlet (111) and the outlet (112) is reduced by the fluid discharged from the first-1 water passage hole (122a) on the side of the disk (120) to the second-1 water passage hole (123a) on the bottom.

[0067] For the complete seal of the flow path (113), the diameter of the end (126) of the disk (120) must be formed to be almost the same as the diameter of the seating portion (115). If the diameter of the end (126) of the disk (120) and the diameter of the seating portion (115) are almost the same, there is a problem that insertion cannot be achieved even if there is a small misalignment (misalignment of the center axis) between the end of the disk and the seating portion (115).

[0068] In particular, the water pressure applied to the disk (120) is highest just before the disk (120) touches the top of the seating portion (115) which is in a state where the flow path (113) is about to be closed (just before the flow path (113) is closed). If the first water passage hole (122) and the second water passage hole (123) are not provided as in the present invention, when the gap between the end (126) of the disk (120) and the flow path (113) narrows due to the downward movement of the disk (120), the water pressure flowing into the inlet portion (111) becomes higher, causing the end (126) to move out of the seating portion (115) and prevent insertion into the seating portion. To prevent this, the diameter of the seating portion (115) must be formed larger than the diameter of the end (126) of the disk, but in this case, there is a problem that it does not become completely sealed. The fluid flowing into the inlet (111) has high water pressure as it is a drinking water, and since the water pressure is determined by the relevant authorities, it cannot be changed.

[0069] The present invention solves this problem by connecting the first water passage hole (122) on the side of the disk (120) to the second water passage hole (123) on the bottom. As shown in FIG. 7, the fluid with increased water pressure due to the narrowed gap enters the first-1 water passage hole (122a) on the side of the disk (120), descends to the second-1 water passage hole (123a) on the bottom, and is discharged to the seating portion (115). This disperses the pressure applied to the end of the disk (126) downward rather than sideways, thereby reducing the pressure applied sideways from the end of the disk (120) (126), allowing the end of the disk (126) to be easily inserted into the seating portion (115). In order to achieve a complete order, even if there is almost no difference in diameter between the end (126) of the disk (120) and the seating portion (115), the end (126) of the disk (120) descending from the top can be inserted into the seating portion (115) without misalignment by reducing strong water pressure in the lateral direction.

[0070] The fluid passes through the first-1 water passage (122a) on the inlet side (111) and is discharged to the seating section (115) through the second-1 water passage (123a), and is discharged to the first-2 water passage (122b) and the second-2 water passage (123b) formed on the outlet side (112), or is discharged from the seating section (115) to the outlet section (112) (see arrow in Fig. 7), or remains in the seating section (115).

[0072] Meanwhile, it is preferable that the diameter of the second water passage hole (123) be formed smaller than the diameter of the first water passage hole (122). This increases the water pressure of the fluid discharged through the second water passage hole (123), thereby facilitating the removal of foreign substances in the seating portion (115), and during the upward stage of the disk (120) (before the flow path (113) opens), it increases the water pressure to provide upward pressure to the disk.

[0073] Additionally, the second water passage hole (123) and the first water passage hole (122) may be connected one-to-one as shown in FIG. 5, or a plurality of second water passage holes (123) may be connected to one first water passage hole (122) (not shown). Since the second water passage hole (123) is formed with a smaller diameter than the first water passage hole (122), for example, by connecting one first water passage hole (122) and two second water passage holes (123), the fluid flowing into one first water passage hole (122) can be dispersed and discharged through the two second water passage holes (123). At this time, it is preferable to form the second water passage holes (123) at the center and the outer edge rather than on the same circumference.

[0074] In this way, the fluid flowing into the first water passage hole (122) of the disk (120) is sprayed from the second water passage hole (123) toward the foreign substance guiding groove (115b) of the seating portion (115) and discharged to the outflow portion (112) along with the foreign substance, so that no foreign substance remains in the foreign substance guiding groove (115b), including the seating portion (115).

[0075] As shown in FIG. 5, the above disk (120) is formed with a first screw thread (121) corresponding to a second screw thread (114a) formed on the inner surface of the guide portion (114) so ​​as to rotate and be inserted along the guide portion (114) of the valve housing (110), a first water passage hole (122) is formed on the lower outer surface at a certain distance apart, a second water passage hole (123) is formed that is connected to the first water passage hole (122) and penetrates to the bottom surface, and a central axis (124) is formed protruding from the center of the bottom surface. Additionally, the above-mentioned disk (120) has a through-hole (125) formed on its upper surface to allow the operating key shaft (131) of the operating key (130) to be inserted, and when the operating key shaft (131) is inserted into the operating key shaft insertion groove (125), the disk rotates due to the rotational force of the handle (132) of the operating key (130). At this time, the disk (120) is formed in a cylindrical shape so that it can rotate smoothly inside the valve housing (110).

[0076] The above disk (120) has a first screw thread (121) formed only on the upper side and not on the entire outer surface, so the part that moves up and down in the guide part (114) is the upper side where the first screw thread (121) is formed, and the part that opens and closes the flow path (113) or is seated in the seating part (115) is the lower side, which is a flat surface where no screw thread is formed. That is, there are no screw threads on the exposed surface of the disk (120) that descends into the flow path (113).

[0077] In this way, the disc (120) descends from the upper to the lower part of the valve housing (110) along the guide part (114), passes through the flow path (113), and is seated on the seating part (115). The lower outer surface is formed at an angle (taped by about 2 degrees) without screw threads, so that it receives less resistance while passing through the flow path (113) and can close the flow path (113).

[0078] In addition, the lower surface of the disk (120) exposed to the flow path (113) is formed as a tapered surface as shown in FIG. 3, and no screw threads are formed in this part. Accordingly, the disk (120) penetrating the flow path (113) can be raised and lowered smoothly, and the flow path (113) can be opened and closed.

[0080] In this way, the operating key shaft (131) of the operating key (130) is inserted through the operating key shaft insertion groove (125) at the upper part of the disk (120) inserted into the guide part (114) of the valve housing (110), and when the operating key (130) is rotated using the handle (132) of the operating key (130), the disk (120) rotates together with the operating key (130) and moves upward or downward along the guide part (114) to open and close the flow path (113).

[0081] As shown in FIG. 8, when the operating key shaft (131) of the operating key (130) is inserted into the operating key shaft insertion groove (125) that is open on the upper part of the disk (120) and the operating key (130) is turned all the way, the disk (120) descends to close the flow path (113) and continues to descend to be seated on the seating portion (115), and the central shaft (124) is fixedly supported in the fixing groove (115a) and the flow path (113) is sealed.

[0082] In this way, the above disk (120) moves downward to close the flow path (113), the lower part of the disk (120) is seated on the seating portion (115), and the central axis (124) is fixed in the fixing groove (115a) so that a complete order is achieved.

[0083] And as shown in Fig. 9, the operating key (130) is rotated in the opposite direction to the downward movement of the disk (120), and when the disk (120) rises again, the flow path (113) of the valve housing (110) is opened to allow water to flow.

[0084] At this time, just before the disk (120) is opened (when the disk (120) is trapped in the flow path (113), fluid flows into the first water passage (122) and is discharged toward the seating portion (115) through the second water passage (123). This discharge of fluid toward the seating portion (115) acts as pressure within the seating portion, generating a force that pushes the disk upward.

[0085] In addition, the degree of opening of the flow path (113) between the inlet (111) and the outlet (112) can be controlled using the above-mentioned disk (120), and the amount of water flow can be controlled according to the degree of opening of the flow path (113).

[0086] The present invention has the effect of achieving a perfect seal by forming the diameters of the disc (120) and the seating portion (115) to be almost identical. However, since the diameters of the disc (120) and the seating portion (115) are almost identical, it is not easy to rotate the disc (120) from the seating portion (115) when opening the valve housing after the leak prevention work is finished. In particular, rotation becomes difficult due to water pressure when the disc (120) has risen to a certain extent from the seating portion (115) but has not moved away from the seating portion (115). However, in the present invention, when the disc (120) rises upward, fluid flows into the first water passage hole (122) on the side of the disc (120), is discharged through the second water passage hole (123) on the bottom, and remains inside the seating portion (115), and a force is generated to push the disc (120) upward. Even if the pressure in the lateral direction is high, the pressure is reduced by the inflow into the first water passage (122), and at the same time, the disk is provided with an upward force at the seating portion (115), making it easy to rotate the disk (120) and thus easily opening the flow path (113).

[0087] In this way, after closing the flow path (113) using the disc (120) in the valve housing (110), the disc (120) seated on the seating portion (115) is rotated in the opposite direction to lower it using the operating key (130) to raise it upward to open the flow path (113), and the open upper part of the guide portion (114) is closed using the shielding plug (140).

[0088] Before covering the above-mentioned shielding plug (140), a sealing cover (141) is placed so as to be in close contact with the guide part (114), and the shielding plug (140) is closed to seal the valve housing (110).

[0089] The present invention allows for quick installation by closing the disc (120) inside the valve housing (110) to seal the valve housing (110), and then opening the disc (120) and closing it with a shield plug (140).

[0090] In this way, the fluid blocking connection valve (100) of the present invention is buried in the ground with the flow path (113) open by the disc (120) after the leak prevention work is completed.

[0091] When the above-mentioned disc (120) descends along the guide section (114) and closes the flow path (113), high-pressure fluid flows into the first water passage (122) on the side and is discharged through the second water passage (123) on the bottom, thereby reducing the pressure in the side direction of inflow, and at the same time, foreign matter is removed from the seating section (115), and when the above-mentioned disc (120) blocks and then opens the flow path (113), fluid is discharged downward from the second water passage (123) to allow it to rise easily.

[0093] Accordingly, the fluid blocking connection valve (100) of the present invention comprises a valve housing (110) having an inlet (111) and an outlet (112) formed on both sides, and a disc (120) that is seated on a seating portion (115) by penetrating a flow path (113) between the inlet (111) and the outlet (112), wherein a first water passage hole (122) and a second water passage hole (123) are perforated on the side and bottom surfaces, respectively, so that high-pressure fluid flowing in from the inlet (111) flows into the first water passage hole (122) on the side surface and is discharged through the second water passage hole (123) on the bottom surface, thereby lowering the water pressure of the incoming fluid and reducing the pressure difference between the inlet (111) and the outlet (112), so that the central axis (124) of the disc (120) can be easily inserted into the fixing groove (115a) of the valve housing (110), and the disc (120) It has the effect of making the closed process easier.

[0094] In addition, the present invention has the effect of strengthening the connection between the disc (120) and the seating portion (115) by connecting the first water passage hole (122) formed on the side of the disc (120) to the second water passage hole (123) leading to the bottom surface, thereby discharging fluid flowing in with strong water pressure through the second water passage hole (123) and discharging foreign matter accumulated on the seating portion (115) through the outflow portion (111).

[0095] In addition, the present invention has a flow path (113) provided between the inlet (111) and the outlet (112), in which the outer surface of the disk (120) is formed as a tapered surface and there are no screw threads, so that the disk (120) closes the flow path (113) and complete sealing is achieved.

[0096] In addition, the present invention has the advantage of easily removing foreign matter trapped in the foreign matter guiding groove (115b) of the valve housing (110) before joining the disc (120) by making the diameter of the second water passage hole (123) on the bottom surface smaller so that it is discharged with stronger water pressure from the bottom surface, while the side and bottom surfaces of the disc (120) are perforated to be connected to each other.

[0097] In addition, the present invention has the effect of making it easier to open the disc (120) by reducing the repulsive force caused by water pressure by discharging the strong pressure of the fluid flowing in at the beginning of the disc opening after the leak prevention work is finished to the bottom surface of the valve housing (110) through the second water passage hole (123). Explanation of the symbols

[0099] 100: Fluid shut-off connection valve 110: Valve housing 111: Inlet 112: Outlet 113: Flow path 114: Guide section 114a: Second screw thread 114b: Third screw thread 115: Seating portion 115a: Fixing groove 115b: Foreign matter guiding groove 120: Disc 121: First screw thread 122: First water passage hole 123: Second water passage hole 124: Central axis 125: Operating key shaft insertion groove 126: End 130: Control Key 131: Control Key Axis 132: Handle 140: Shielding plug 141: Sealing cover 150: Inlet pipe connection 151: Inlet pipe 160: Outlet pipe connection 161: Outlet pipe

Claims

Claim 1 A valve for blocking fluid for pipe maintenance comprises: a valve housing (110) having an inlet (111) and an outlet (112) formed on both sides, a flow path (113) formed between the inlet (111) and the outlet (112), a guide portion (114) protruding upward above the flow path (113), and a seating portion (115) formed at the bottom of the flow path (113) that is recessed lower than the inlet (111); and a cylindrical disk (120) that moves up and down along the guide portion (114) of the valve housing (110) to open and close the flow path (113), is seated on the seating portion (115), and has a central axis (124) protruding from the center of the bottom surface; wherein a fixing groove (115a) into which the central axis (124) is inserted and fixed is formed in the seating portion (115); and the disk (120) On the side, a first water passage hole (122) is formed that is spaced apart from each other, and a second water passage hole (123) is formed inside the disk (120) and is connected to the first water passage hole (122) and penetrates to the bottom surface of the disk (120); the operating key shaft (131) of the operating key (130) is inserted through the operating key shaft insertion groove (125) that is open on the upper part of the disk (120) inserted into the guide part (114) of the valve housing (110), and the disk (120) is raised and lowered by the rotation of the operating key (130) to open and close the flow path (113); when the disk (120) descends along the guide part (114) and closes the flow path (113), the fluid flowing from the inlet part (111) into the first water passage hole (122) is discharged into the second water passage hole (123); and in the second water passage hole (123) A fluid blocking connection valve that allows the discharged fluid to descend toward the seating portion (115) and remove foreign matter from the foreign matter guiding groove (115b) formed around the seating portion (115) and the fixing groove (115a). Claim 2 delete Claim 3 A fluid blocking connection valve according to claim 1, wherein a disc (120) seated on a seating portion (115) is rotated upward using an operating key (130) inserted through a guide portion (114) of the valve housing (110) to open a flow path (113) and a sealed upper portion of the guide portion (114) is sealed with a sealing plug (140). Claim 4 In claim 1, the disc (120) has a tapered outer surface exposed to the flow path (113) and is threadless; a fluid shut-off connection valve. Claim 5 In claim 1, the diameter of the second water passage hole (123) is smaller than the diameter of the first water passage hole (122); a fluid blocking connection valve. Claim 6 In paragraph 5, the second water passage (123) and the first water passage (122) are connected one-to-one; a fluid shut-off connection valve. Claim 7 In paragraph 5, the second water passage hole (123) is connected to a plurality of first water passage holes (122), and the second water passage holes (123) are not formed on the same circumference; a fluid blocking connection valve. Claim 8 delete

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