Booster pump system equipped with an all-in-one ball check valve with friction resistance reduction and vortex prevention structure

Abstract

The present invention relates to a booster pump system equipped with an all-in-one ball check valve having a structure for reducing frictional resistance and preventing vortex flow. The purpose of the invention is to provide a booster pump system equipped with an all-in-one ball check valve, wherein a flange, a check valve, and a ball valve are integrally formed in a single valve housing to enable rapid connection between the discharge end of the booster pump and the discharge junction pipe, wherein the longitudinal inner wall surface of the area within the integrally formed valve housing where the check valve is located is formed with a curvature structure to reduce frictional resistance between the fluid rapidly flowing in from the booster pump and the inner wall surface, thereby improving fluid flow, rapid fluid supply, and reduction of noise and vibration, and simultaneously, a protrusion structure is formed on the rear inner wall surface to prevent the generation of vortex flow. The present invention provides a booster pump system, wherein a check valve (11) and between the discharge end (22) of the booster pump (2) and each branch pipe (61) of the discharge junction pipe (6) where fluid flows are combined The invention features a booster pump system equipped with an all-in-one ball check valve (1) configured such that ball valves (12) are sequentially installed inside a valve housing (13) to form an integrated unit, wherein the inner wall surface of the area where the check valve is located within the valve housing is configured as a curved portion (131) having a vortex-preventing projection (131d) formed thereon to improve the flow of fluid discharged from the booster pump and prevent the generation of vortices.

Description

Technology Field

[0001] The present invention relates to a booster pump system equipped with an all-in-one ball check valve having a friction resistance reduction and vortex prevention structure, and more specifically, to a booster pump system equipped with an all-in-one ball check valve in which a check valve and a ball valve are integrally formed within a single valve housing, wherein the inner wall structure of the check valve region is formed to improve the flow of rapid fluid entering, and a complex flow path structure is formed at the rear to prevent vortices. Background Technology

[0002] A booster pump system is a pressure-boosting pump system installed on an intermediate floor of a building, such as a high-rise building, configured to transfer water from a water tank in a supply pipe, water from a fire extinguishing system supply pipe, or water discharged from a fire truck pump to a higher location.

[0003] With the provision of such a booster pump system, water can be supplied directly from the reservoir to the point of use at increased pressure without the need to install water tanks as in the past for apartments or high-rise buildings, and water can be supplied to fire extinguishing equipment or fire trucks at the required pressure.

[0004] This booster pump system is equipped with multiple motors and pumps, and is configured to connect water being supplied through a reservoir and supply pipe to the suction end of each pump via a branch pipe of the suction junction pipe, supply water pressurized by the pump to the branch pipe of the discharge junction pipe through the discharge end, and supply the combined water to the point of use through the discharge junction pipe.

[0005] At this time, a valve for controlling the fluid inflow is installed between each branch pipe branched from the suction junction pipe and the suction end of the pump to control the fluid flow entering each pump, and

[0006] A valve for controlling fluid discharge flow is installed between the discharge end of each pump and each branch pipe, configured to control the fluid flow discharged into and joined by the discharge junction pipe.

[0007] Typically, a butterfly valve or a ball valve is used as the valve for controlling the fluid inflow, and typically, a ball valve is used as the valve for controlling the fluid outflow.

[0008] The above ball valve is configured to control the flow of fluid solely by rotating the internal rotating body 90˚.

[0009] Meanwhile, a check valve is further provided between the discharge end of the pump for the booster pump system and the ball valve to block water discharged toward the discharge junction pipe from flowing back toward the pump.

[0010] When a pump system consists solely of a pump and a ball valve, a check valve prevents the problem of backflow back toward the pump caused by the pressure difference when the ball valve opens due to the fluid pressure boosted by the pump. By controlling the fluid flow to be unidirectional, it ensures a stable supply of the boosted fluid. In other words, the check valve is configured to allow fluid to flow in one direction and prevent backflow by closing due to the back pressure of the fluid when it stops. Since it operates based on the fluid flow within the piping, it is usefully utilized in various forms as a control valve without any external power.

[0011] However, the conventional booster pump system described above has a problem in that the installation work is increased because the two valves are connected in series with the pump by fastening the flanges with bolts and nuts while the check valve is positioned between the flange of the pump's discharge end and the flange of the ball valve's inlet end to combine the valves between the pump's output end and the discharge junction pipe, which are made separately as shown in Fig. 12.

[0012] In addition, the check valve constituting the conventional booster pump system has a problem in that when opened, the fluid (water) supplied with increased pressure flows along the inner wall of the check valve body, which is formed in a straight line, and the frictional resistance increases, hindering the smooth flow of fluid, and consequently, shock and noise are generated due to strong collision with the inner wall.

[0013] In addition, the check valve constituting the conventional booster pump system has a problem in that when the flow of the fluid supplied with increased pressure changes rapidly and the valve opens and closes, the fluid that strongly collides with the inner wall of the check valve body formed in a straight shape and the newly supplied fluid combine, and a vortex may be generated in the rear section where the fluid is supplied toward the ball valve due to the difference in flow velocity between the fluid flows. Prior art literature

[0014] Korean Registered Patent Publication No. 10-1319002 (Oct. 10, 2013) Korean Registered Utility Model Publication No. 20-0465358 (Feb. 7, 2013) Korean Registered Patent Publication No. 10-2215189 (Feb. 5, 2021) Korean Registered Patent Publication No. 10-1431732 (Aug. 12, 2014) The problem to be solved

[0015] The objective of the present invention to solve the above-mentioned problems is to provide a booster pump system equipped with an all-in-one ball check valve, wherein a flange, a check valve, and a ball valve are integrally formed in a single valve housing to enable rapid connection between the discharge end of the booster pump and the discharge junction pipe, and wherein the longitudinal inner wall surface of the area where the check valve is located within the integrally formed valve housing is formed with a curvature structure to reduce frictional resistance between the fluid rapidly flowing in from the booster pump and the inner wall surface, thereby improving fluid flow, rapid fluid supply, and reduction of noise and vibration, and at the same time, a protrusion structure is formed on the rear inner wall surface to prevent the generation of vortices.

[0016] In addition, another objective of the present invention is to provide a booster pump system equipped with an all-in-one ball check valve that increases the airtightness between a valve housing and a check valve installed therein by ensuring that when a pressurized fluid passing through the check valve pressurizes in the opposite direction, the inclined pressurizing part of the check valve pressurizes a sealing member in order to prevent leakage of the check valve constituting the all-in-one ball check valve. means of solving the problem

[0017] The present invention, which performs the task of achieving the above-mentioned purpose and eliminating conventional drawbacks, comprises one or more motors and booster pumps that pressurize a fluid supplied from a suction confluence pipe and supply it to a discharge confluence pipe, wherein

[0018] It is configured as an all-in-one ball check valve, in which a check valve and a ball valve are sequentially installed inside a valve housing between the discharge end of the booster pump and each branch pipe of the discharge junction pipe where the fluid joins, and

[0019] This is achieved by providing a booster pump system equipped with an all-in-one ball check valve having a friction resistance reduction and vortex prevention structure, characterized by configuring the inner wall surface of the area where the check valve is located within the valve housing as a curved portion with vortex prevention protrusions to improve the flow of fluid discharged from the booster pump and prevent the generation of vortices.

[0020] In a preferred embodiment, the check valve comprises a body having a plurality of support frames having a certain thickness arranged in a circular pattern to connect a front end and a rear end, a fluid discharge port formed between the support frames, a guide tube formed in the center of the rear end, and an inlet formed in the front end;

[0021] A movable opening / closing unit comprising a rear shaft that moves linearly and is inserted into a cylindrical guide of the body, and a front cone-type head that controls the movement of fluid by opening and closing the inlet side of the body;

[0022] A stopper part that is fastened to the front end of the above body and provides a watertight structure while preventing detachment of the movable opening and closing part;

[0023] It is characterized by being composed of a spring that is fitted around the guide tube of the above-mentioned body and provides elastic force to the movable opening and closing part.

[0024] In a preferred embodiment, the stopper portion has a circumferential step formed between the front body and the rear locking projection, and forms a first watertight groove so that a sealing member is fitted along the circumference to watertightly seal the gap with the valve housing when connected to the front body portion, and forms a second watertight groove so that a gasket is fitted to watertightly seal the gap between the cone-type heads of the movable opening and closing portion along the inner circumference.

[0025] The front portion of the body forming one side of the first watertight groove is characterized by having an inclined portion formed so as to pressurize the sealing member when the fluid pressurizes it.

[0026] In a preferred embodiment, the curvature comprises a first concave curvature formed with a concave curvature to induce a curved flow while reducing the impact force with the incoming fluid as the movable opening / closing part of the check valve retracts due to the increased hydraulic pressure;

[0027] A convex curvature portion formed with a convex curvature to guide and supply fluid toward the ball valve so that the boosting fluid, which has been changed to a curved flow, does not return toward the check valve;

[0028] A second concave curvature formed with a relatively smaller concave curvature than the first concave curvature to further reduce the impact force of the fluid passing through the convex curvature and induce a curved flow to supply it to a ball valve;

[0029] It is characterized by being composed of a vortex-preventing projection that protrudes vertically in the center direction from a point on the circumference of the convex curvature portion at the rear end of the first concave curvature portion to guide the flow of incoming fluid in the horizontal direction and prevent the generation of vortices.

[0030] In a preferred embodiment, the vertical protrusion height of the anti-vortex projection is formed to be smaller than the inner diameter of the second concave curved portion so as not to reduce the discharged flow rate.

[0031] In a preferred embodiment, the anti-vortex protrusions are characterized by being formed by being arranged in multiple numbers along the circumference of the convex curvature portion.

[0032] In a preferred embodiment, a flange is formed at the leading end of the valve housing that contacts a flange formed at the discharge end of the booster pump, and the check valve installed at the leading end of the inner region of the valve housing is configured to communicate with the discharge end of the booster pump. Effects of the invention

[0033] A booster pump system equipped with an all-in-one ball check valve according to the present invention having the above-described features has the effect of reducing noise and vibration and ensuring rapid fluid supply by forming a curvature structure on the longitudinal inner wall surface of the area where the check valve is located within the internal area of ​​the valve housing, in which a flange, a check valve, and a ball valve are integrally formed in a single valve housing, thereby reducing frictional resistance between the rapidly flowing fluid and the inner wall surface and improving fluid flow, and at the same time, preventing the generation of vortices by forming a protrusion structure on the rear inner wall surface.

[0034] Furthermore, the present invention comprises an all-in-one ball check valve, in which a flange, a check valve, and a ball valve are integrally formed, connecting the discharge end of a booster pump constituting a booster pump system to the discharge junction pipe. Since the structure requires only connecting the flange formed on one end to the pump discharge end flange, it eliminates the need for the multi-stage connection process of connecting the booster pump and the check valve via flanges and then connecting the check valve and the ball valve as in conventional systems, thereby enabling rapid installation.

[0035] In addition, the present invention has the effect of increasing the airtightness between the valve housing and the check valve by pressurizing the sealing member when the pressurized fluid passing through the check valve pressurizes in the opposite direction, thereby preventing leakage of the check valve constituting an all-in-one ball check valve that constitutes a booster pump system.

[0036] As described above, the present invention is a useful invention with various effects, and its industrial utilization is highly anticipated. Brief explanation of the drawing

[0037] FIG. 1 is an exemplary diagram showing the exterior of a booster pump system having a structure in which an all-in-one ball check valve is attached according to one embodiment of the present invention, and FIG. 2 is an exemplary cross-sectional view showing the internal structure of an all-in-one ball check valve according to one embodiment of the present invention, and FIG. 3 is a perspective view showing an all-in-one ball check valve having a screw-type fastener according to one embodiment of the present invention, and FIG. 4 is a perspective view showing a flanged all-in-one ball check valve according to another embodiment of the present invention, and FIG. 5 is an enlarged cross-sectional example showing a check valve and a ball valve of an all-in-one ball check valve according to one embodiment of the present invention, and FIG. 6 is an exemplary diagram showing the configuration of a check valve according to one embodiment of the present invention, and FIG. 7 is an enlarged cross-sectional example showing a front end fastening structure of a check valve according to one embodiment of the present invention, and FIG. 8 is a partial cross-sectional perspective view showing a curved portion and an anti-vortex projection structure formed inside the valve housing of an all-in-one ball check valve according to one embodiment of the present invention, and FIG. 9 is an enlarged cross-sectional example showing the internal curvature of the valve housing and the anti-vortex protrusion of an all-in-one ball check valve according to one embodiment of the present invention, FIG. 10 is an exemplary cross-sectional view showing fluid flow when an all-in-one ball check valve is opened according to one embodiment of the present invention, and FIG. 11 is an exemplary cross-sectional view showing the pressurization state of a stopper part by a pressurizing fluid when an all-in-one ball check valve is closed according to one embodiment of the present invention, and FIG. 12 is an example diagram showing a booster pump system in which conventionally configured individual check valves and ball valves are connected by a nipple flange. Specific details for implementing the invention

[0038] The configuration and operation of an embodiment of the present invention are described in detail below in conjunction with the attached drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the essence of the present invention, such detailed description is omitted.

[0039] FIG. 1 is an exemplary diagram showing the exterior of a booster pump system with a structure in which an all-in-one ball check valve according to one embodiment of the present invention is connected; FIG. 2 is an exemplary cross-sectional view showing the internal structure of an all-in-one ball check valve according to one embodiment of the present invention; FIG. 3 is a perspective view showing an all-in-one ball check valve having a screw-type fastener according to one embodiment of the present invention; FIG. 4 is a perspective view showing a flanged all-in-one ball check valve according to another embodiment of the present invention; FIG. 5 is an enlarged exemplary cross-sectional view showing the check valve and ball valve of an all-in-one ball check valve according to one embodiment of the present invention; FIG. 6 is an exemplary diagram showing the configuration of a check valve according to one embodiment of the present invention; FIG. 7 is an enlarged exemplary cross-sectional view showing the front end connection structure of a check valve according to one embodiment of the present invention; FIG. 8 is a partial cross-sectional perspective view showing a curved portion and an anti-vortex projection structure formed inside the valve housing of an all-in-one ball check valve according to one embodiment of the present invention; FIG. Figure 9 is an enlarged cross-sectional example showing the internal curvature of the valve housing and the anti-vortex protrusion of an all-in-one ball check valve according to one embodiment of the present invention, Figure 10 is a cross-sectional example showing the fluid flow when the all-in-one ball check valve is opened according to one embodiment of the present invention, and Figure 11 is a cross-sectional example showing the pressurized state of the stopper part by the pressurized fluid when the all-in-one ball check valve is closed according to one embodiment of the present invention.

[0040] As described above, the booster pump system equipped with an all-in-one ball check valve according to the present invention is a system composed of a suction confluence pipe (4), a suction side valve (5), a booster pump (2), a motor (3), a discharge side all-in-one ball check valve (1) in which a check valve and a ball valve are integrally formed inside a valve housing, and a discharge confluence pipe (6), in order of proximity to the water tank.

[0041] The booster pump system is generally configured with multiple booster pumps (2) and motors (3) that pressurize and supply fluid, arranged in parallel on the upper part of the base (7). The fluid refers to water used as firefighting water.

[0042] In this way, a booster pump system composed of multiple booster pumps (2) and motors (3) can operate all or part of the booster pumps (2) and motors (3) to control the flow rate, thereby increasing the pressure of the incoming fluid and discharging it, or if some of the booster pumps (2) and motors (3) fail or during regular maintenance, only some of the booster pumps (2) and motors (3) can be selectively operated or replaced.

[0043] However, in the following description of the present invention, only the front view necessary for explaining the discharge-side all-in-one ball check valve (1), in which the flange, check valve, and ball valve constituting the booster pump system are compactly integrated, is shown. The plan view and description of the parallel configuration of the remaining multiple booster pumps (2) and motor (3) are omitted for convenience of explanation as they are generally known configurations.

[0044] The suction end (21) of each booster pump (2) constituting the booster pump system is configured to communicate with each branch pipe (41) of the suction confluence pipe (4) to which fluid (water) stored in the reservoir is transferred through the water supply pipe and then joined, and the fluid flow control is configured such that a suction side valve (5) is installed between the suction end (21) of the booster pump (2) and the branch pipe (41) of the suction confluence pipe (4) to control the inflow of the fluid (water).

[0045] Additionally, the discharge end (22) of each booster pump (2) is configured to be connected to each branch pipe (61) of the discharge confluence pipe (6), and the fluid flow control is configured such that a discharge-side all-in-one ball check valve (1) is installed between the discharge end (22) of the booster pump (2) and the branch pipe (61) of the discharge confluence pipe (6) to control the discharge of the fluid (water).

[0046] The above all-in-one ball check valve (1) is equipped with a valve housing (13) in which an internal curved portion (131) that improves fluid flow to reduce noise and vibration and allows for rapid fluid supply without generating vortices when supplying fluid through the booster pump discharge end, and a flange (132) formed as a connecting portion on one side of the external end, that is, toward the discharge end of the booster pump, are integrally formed.

[0047] As shown in FIGS. 3 and 4, the other end of the valve housing, that is, the right side of the ball valve area, is configured to be connected to a branch pipe (61) of a discharge confluence pipe (6) configured in a corresponding manner by being formed with a screw-type or flange-type fastener (133).

[0048] The valve housing (13) is configured with two valves installed in the internal space area to allow fluid to flow in one direction and to prevent backflow by closing the valve due to the back pressure of the fluid when the fluid stops, and two ball valves (12) are installed in succession to control the flow of fluid by rotating the ball (122) according to the direction of the valve control handle (121).

[0049] The above check valve (11) comprises a body (111) in which a plurality of support frames (111c) having a certain thickness are arranged in a circular pattern to connect a front end (111a) and a rear end (111b), a fluid discharge port (111d) is formed between the support frames, a guide tube (111e) is formed in the center of the rear end, and an inlet port (111f) is formed in the front end;

[0050] A movable opening / closing part (112) comprising a rear shaft (112a) that moves linearly and is inserted into a cylindrical guide of the body, and a front cone-type head (112b) that controls the movement of fluid by opening and closing the inlet side of the body;

[0051] A stopper part (113) that is fastened to the front end of the body and provides a watertight structure while preventing the movable opening and closing part from detaching;

[0052] It consists of a spring (114) fitted around the guide tube of the body (111) to provide elastic force to the movable opening and closing part.

[0053] In addition, the stopper part (113) has a step formed in the circumferential direction between the front body (113a) and the rear stopper (113b), and a first watertight groove (113c) is formed so that a sealing member (14) that seals the gap between the valve housing (13) along the circumference is fitted when fastened to the front part (111a) of the body (111), and a second watertight groove (113d) is formed so that a gasket (15) that seals the gap between the cone-type head (112b) of the movable opening / closing part (112) along the inner circumference is fitted.

[0054] At this time, the front portion (111a) of the body (111) forming one side of the first watertight groove can form an inclined portion (111a').

[0055] When the fluid supplied to the discharge confluence pipe (6) passes through the all-in-one ball check valve (1) which is opened through the discharge end when the booster pump is operated and the check valve of the all-in-one ball check valve (1) is closed, the above inclined portion (111a') pressurizes the front portion (111a) of the body (111) while the connection part with the stopper portion (113) is pushed, and the inclined portion (111a') pressurizes the sealing member (14), continuously pressurizing the sealing member (14), which is made of an elastic material, thereby further filling the empty space of the gap in the width direction and simultaneously expanding outwardly in the direction of the circumference contacting the valve housing (13), thereby pressurizing the gap and further increasing the watertight performance.

[0056] By providing a structure that enhances watertightness in this way, leakage to the outside of the all-in-one ball check valve (1) due to backflow of the pressurized fluid is prevented.

[0057] In one embodiment, the ball valve (12) is configured as a manual opening and closing method in which, when a control handle (121) is rotated by the operator's manual force, a stem (123) connected to the upper end of the ball (122) rotates the ball (122), thereby controlling the opening direction of the fluid passage hole (122a) penetrating the ball.

[0058] Of course, the operation of the ball valve can also be configured as an automatic opening and closing method that controls the opening direction of the fluid passage hole penetrating the ball by rotating the stem through the rotation of an electronically controlled motor, thereby rotating the ball linked to it.

[0059] That is, it is sufficient for the ball valve (12) to be configured so that the movement of fluid can be controlled through the rotation of the ball. The following description of other configurations for the operation of the ball valve is omitted as it can be done by referring to known or commercial ball valve structures.

[0060] The above valve housing (13) is configured to be divided into two internal areas, a check valve area and a ball valve area, so that a check valve and a ball valve are sequentially positioned inside.

[0061] Among these, the inner wall surface shape of the area where the check valve is located is curved so that a reduction in flow velocity caused by strong collision with the incoming fluid does not occur when the inner wall surface is formed as a straight inner wall surface inside the housing as in the conventional method, thereby forming an inner curved portion (131) that improves fluid flow.

[0062] To explain in more detail, the above-mentioned curvature portion (131) comprises a first concave curvature portion (131a) formed with a concave curvature to reduce the impact force with the fluid generated when colliding with the inner wall surface by inducing a curved flow, as the structure close to the stopper portion (113) opens up and the movable opening / closing portion (112) of the check valve (11) receives pressure from the increased hydraulic pressure and, when the pressure is greater than the elastic force of the spring located at the rear, it retracts backward;

[0063] A convex curvature portion (131b) formed with a convex curvature to guide and supply fluid toward the ball valve so that the boosting fluid, which has been changed to a curved flow, does not return toward the check valve;

[0064] A second concave curved section (131c) formed with a relatively smaller concave curvature than the first concave curved section (131a) to further reduce the impact force of the fluid passing through the convex curved section and induce a curved flow to supply it to the ball valve;

[0065] It is composed of a vortex-preventing projection (131d) that protrudes vertically in the center direction from a point on the circumference of the convex curvature portion (131b) at the rear end of the first concave curvature portion (131a) to guide the flow of incoming fluid in the horizontal direction and prevent the generation of vortices.

[0066] In the above, the criteria for concave and convex refer to the shape when viewed from the inner center of the valve lower housing (13) outward.

[0067] The vertical protrusion height of the above-mentioned anti-vortex protrusion (131d) is formed to protrude smaller than the inner diameter of the above-mentioned second concave curved portion (131c) so that the discharged flow rate is not reduced.

[0068] The above anti-vortex protrusions (131d) may be formed by arranging a plurality of them along the circumference of the convex curvature portion (131b).

[0069] The above-mentioned anti-vortex projection (131d) prevents vortexes by guiding the rear end of the fluid, which moves rapidly with reduced friction along the inner wall surface of the valve housing formed by the first concave curvature portion (131a), to rapidly rearward by means of a vertically protruding and straightened projection structure, thereby preventing vortexes that may occur when the rear end of the fluid, which moves rapidly with reduced friction, collides with the fluid that has newly entered and is moving due to the curvature structure of the first concave curvature portion (131a).

[0070] In addition, when one or more anti-vortex protrusions (131d) are provided along the circumference of the convex curvature portion (131b), the area is divided in the circumferential direction by a structure arranged radially in the central direction, thereby occupying the vortex generation area. Even if a vortex is generated, the generation area is reduced, and the vortex area is collapsed by the straightened fluid flow, thereby guiding a rapid and stable fluid flow.

[0071] Meanwhile, the outer shape of the valve housing (13) in which the curvature portion (131) is formed is also formed to have the same curvature shape as the inside.

[0072] As described above, a curved portion (131) is formed on the inner wall surface of the valve housing (13) so that the fluid can pass through smoothly, thereby reducing frictional resistance. When the fluid is supplied in pressurized form from the booster pump (2) and collides with the inner wall surface, the fluid flow becomes smooth, allowing for smooth fluid supply and preventing frictional noise, which reduces noise and vibration.

[0073] In addition, the vortex-preventing projection (131d) formed along the circumference of the convex curvature portion (131b) prevents vortex phenomena that may occur at the rear end of the first concave curvature portion (131a), and the straightened projection structure guides it quickly backward, thereby enabling rapid fluid supply.

[0074] In addition, the flange (132) at one end of the valve housing (13) constituting the all-in-one ball check valve (1) is configured to be connected to the flange (221) formed at the end of the discharge end (22) of the booster pump (2) by a bolt and nut.

[0075] At this time, the check valve (11) installed on the inner end of the valve housing (13) has a simple configuration so as to be directly connected to the discharge end formed on the inner side of the flange (221) formed at the end of the discharge end (22) of the booster pump (2) without a separate connecting pipe.

[0076] In this way, by having a structure in which the check valve is directly connected from the inner end of the valve housing (13) without a separate connecting pipe structure from the discharge end (22) of the booster pump (2), it has a problem that may occur if the all-in-one ball check valve is configured with a structure that is long in overall length as it moves away from the discharge end of the booster pump.

[0077] In other words, it has a structure that reduces in advance the problems of vibration or noise generated in long ball check valves due to the increased weight of the fluid stored in the long moving connecting pipe structure.

[0078] In addition, the other end of the valve housing, that is, the right side of the ball valve area, is configured to be connected to a branch pipe (61) of a discharge confluence pipe (6) configured in a corresponding manner, by being formed with a screw-type or flange-type fastener (133) as shown in FIG. 3 or FIG. 4.

[0079] In this way, the flange (132) is formed at the very front end of the valve housing (13) where the check valve is located and connected to the booster pump, so that a structure is not required to add a separate flange between the check valve and the ball valve to connect to the discharge end flange of the booster pump in order to connect the booster pump, the check valve, and the ball valve as in the conventional method, thereby allowing for quick installation.

[0080] The present invention is not limited to the specific preferred embodiments described above, and anyone with ordinary knowledge in the art to which the invention pertains can make various modifications without departing from the essence of the invention as claimed in the claims, and such modifications will be within the scope of the claims. Explanation of the symbols

[0081] (1) : All-in-one ball check valve (2) : Booster pump (3) : Motor (4) : Suction junction pipe (5) : Suction side valve (6) : Discharge junction pipe (7) : Base (11) : Check valve (12) : Ball valve (13) : Valve housing (14) : Sealing member (15) : Gasket (21) : suction end (22) : discharge end (41) : Branch pipe (61) : Branch pipe (61) : Branch (111) : Body (111a) : Shear section (111a') : Inclined section (111b) : Rear section (111c) : Support frame (111d) : Fluid outlet (111e) : Guide tube (111f) : Inlet (112a) : Rear shaft (112b) : Cone-type head (112) : Movable opening / closing part (113) : Stopper part (113a) : Body (113b) : catch (113c) : first watertight groove (113d) : Second watertight groove (114) : Spring (121) : Valve control handle (122) : Ball (123) : Stem (122a) : Fluid transfer hole (131) : Curved portion (131a) : First concave portion (131b): Convex curvature (131c): Second concave curvature (131d) : Anti-vortex projection (132) : Flange (133) : Fastener (221) : Flange

Claims

Claim 1 In a booster pump system comprising one or more motors and booster pumps that pressurize fluid supplied from a suction confluence pipe and supply it to a discharge confluence pipe, the system is configured as an all-in-one ball check valve (1) formed as an integrated unit by sequentially installing a check valve (11) and a ball valve (12) inside a valve housing (13) between the discharge end (22) of the booster pump (2) and each branch pipe (61) of the discharge confluence pipe (6) where the fluid joins, wherein the inner wall surface of the area where the check valve is located within the valve housing is configured as a curved portion (131) having a vortex-preventing projection (131d) formed thereon to improve the flow of fluid discharged from the booster pump and prevent the generation of vortices, and the check valve (11) is formed by a plurality of support frames (111c) having a certain thickness arranged in a circular manner to connect a front end (111a) and a rear end (111b), and the space between the support frames is fluid A body (111) having an outlet (111d) formed therein, a guide tube (111e) formed in the center of the rear end, and an inlet (111f) formed in the front end; a movable opening / closing part (112) consisting of a rear end shaft (112a) inserted into a cylindrical guide of the body and moving in a straight line, and a front end cone-type head (112b) that opens and closes the inlet side of the body to control the movement of fluid; a stopper part (113) fastened to the front end of the body to prevent the movable opening / closing part from detaching while providing a watertight structure; and a spring (114) fitted around the guide tube of the body (111) to provide elastic force to the movable opening / closing part.It is composed of, wherein the stopper part (113) has a step formed in the circumferential direction between the front body (113a) and the rear catch (113b), and forms a first watertight groove (113c) so that a sealing member (14) that seals the gap between the valve housing (13) along the circumference when fastened with the front part (111a) of the body (111) is fitted, and forms a second watertight groove (113d) so that a gasket (15) that seals the gap between the cone-type head (112b) of the movable opening / closing part (112) along the inner circumference is fitted, and the front part (111a) of the body (111) forming one side of the first watertight groove forms an inclined part (111a') so as to pressurize the sealing member (14) when the fluid is pressurized, and the The curvature section (131) comprises: a first concave curvature section (131a) formed with a concave curvature to induce a curved flow while reducing the impact force with the incoming fluid as the movable opening / closing part (112) of the check valve (11) retracts due to the pressurized hydraulic pressure; a convex curvature section (131b) formed with a convex curvature to guide and supply the fluid toward the ball valve so that the pressurized fluid, which has been changed to a curved flow, does not return toward the check valve; a second concave curvature section (131c) formed with a relatively smaller concave curvature than the first concave curvature section (131a) to further reduce the impact force of the fluid passing through the convex curvature section and induce a curved flow to supply it to the ball valve; and a vertically protruding section at a point on the circumference of the convex curvature section (131b) from the rear end of the first concave curvature section (131a) to guide the flow of the incoming fluid in a horizontal direction. A booster pump system equipped with an all-in-one ball check valve having a friction resistance reduction and vortex prevention structure, characterized by being composed of a vortex prevention projection (131d) that prevents the generation of vortex, wherein the vertical protrusion height of the vortex prevention projection (131d) is formed to protrude smaller than the inner diameter of the second concave curvature portion (131c) so as not to reduce the discharged flow rate. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A booster pump system having an all-in-one ball check valve having a friction resistance reduction and vortex prevention structure, wherein, in claim 1, the vortex prevention protrusions (131d) are formed by being arranged in a plurality along the circumference of the convex curvature portion (131b). Claim 7 A booster pump system having an all-in-one ball check valve having a friction resistance reduction and vortex prevention structure, characterized in that, in claim 1, a flange (132) is formed at the front end of the valve housing (13) in contact with a flange (221) formed at the end of the discharge end (22) of the booster pump (2), and a check valve (11) installed on the front end of the inner region of the valve housing (13) is configured to communicate with the discharge end (22) of the booster pump (2).

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