Valve with lock function and lock operating member

Abstract

To provide a valve that realizes a lock function with a simple structure. [Solution] The valve includes a hand wheel, a lock actuation member inserted into a space in the hand wheel, and a fixed lock part, wherein the valve is locked when at least a portion of the lock actuation member and the fixed lock part are coupled together, and the valve is unlocked when the lock actuation member and the fixed lock part are separated, the lock actuation member is rotatable in response to rotation of the hand wheel when inserted into the hand wheel, and the fixed lock part is used for locking the valve when fixed.

Description

[Technical field]

[0001] The present invention relates to a valve having a lock function. [Background technology]

[0002] A valve is a means for opening and closing the flow of a fluid. However, conventional valves do not have a locking function, and therefore there is a problem that the valve can be arbitrarily operated by anyone other than the administrator. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention provides a valve that realizes a locking function with a simple structure. [Means for solving the problem]

[0004] In order to achieve the above-mentioned object, a valve according to an embodiment of the present invention includes a hand wheel, a lock actuation member inserted into a space of the hand wheel, and a fixed lock part, wherein the valve is locked by at least a portion of the lock actuation member and the fixed lock part are coupled together, the valve is unlocked by separating the lock actuation member and the fixed lock part, the lock actuation member is rotatable in response to the rotation of the hand wheel when inserted into the hand wheel, and the fixed lock part is used for locking the valve when fixed.

[0005] A valve according to another embodiment of the present invention includes a hand wheel and a locking member inserted into a space of the hand wheel, wherein the locking state of the valve is changed by pushing the locking member toward the center of the hand wheel or pulling the locking member toward the outside of the hand wheel while the locking member is inserted into the space.

[0006] A lock operating member used for a locking operation according to an embodiment of the present invention includes a main body and an insertion part extending in length from the main body, wherein a space is formed inside the main body and a locking protrusion is formed on a part of an inner surface of the main body, the locking protrusion performs a locking operation when coupled with a protrusion of an external locking part, and the lock is released when the locking protrusion is separated from the protrusion of the external locking part, and the coupling or separation of the locking protrusion and the protrusion is determined according to the movement of the insertion part. Effect of the Invention

[0007] The valve according to the present invention can lock or unlock the valve by engaging or disengaging the protrusion of the lock operating member with the lock protrusion of the bonnet, so that others cannot arbitrarily operate the valve. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view illustrating the structure of an unlocked valve according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a perspective view illustrating a locked valve structure according to an embodiment of the present invention. [Diagram 3] 1 is a diagram illustrating an exploded structure of a valve according to an embodiment of the present invention. [Figure 4] 1 is a diagram illustrating a schematic cross-sectional structure of a valve according to an embodiment of the present invention. [Diagram 5] 4 is a diagram illustrating an operation of a lock actuator according to an embodiment of the present invention; [Figure 6] 4 is a diagram illustrating an operation of a lock actuator according to an embodiment of the present invention; [Figure 7] 4 is a diagram illustrating an operation of a lock actuator according to an embodiment of the present invention; [Figure 8] 4 is a diagram illustrating an operation of a lock actuator according to an embodiment of the present invention; [Figure 9] 1 is a diagram illustrating a structure of a fluid transfer hole according to an embodiment of the present invention; [Figure 10] 1 is a diagram illustrating a structure of a fluid transfer hole according to an embodiment of the present invention; [Figure 11] 11 is a diagram illustrating a table showing the ratios of the curves in FIG. 10. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] As used herein, singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "include" should not be interpreted as including all of the components or steps described in the specification, and should be interpreted as including some components or steps not included, or including additional components or steps. In addition, terms such as "··· unit" and "module" described in the specification mean a unit that processes at least one function or operation, which can be implemented in hardware or software, or a combination of hardware and software.

[0010] The present invention relates to a valve with a lock function, for example, a diaphragm valve, and the lock function of the valve can be realized by controlling the direction of the rotation axis of the valve with a simple structure, while the lock function is not realized in the direction of the central axis of the valve.

[0011] Specifically, when the valve is locked, the hand wheel does not rotate in the direction of the rotation axis, and when the valve is unlocked, the hand wheel can rotate clockwise or counterclockwise.

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, various embodiments of the present invention will be described in Fig. 1 is a perspective view illustrating the structure of an unlocked valve according to one embodiment of the present invention, Fig. 2 is a perspective view illustrating the structure of a locked valve according to one embodiment of the present invention, and Fig. 3 is a drawing illustrating an exploded structure of a valve according to one embodiment of the present invention. Fig. 4 is a drawing illustrating a schematic cross-sectional structure of a valve according to one embodiment of the present invention, and Figs. 5 to 8 are drawings illustrating the operation of a lock actuator according to one embodiment of the present invention. Figs. 9 to 10 are drawings illustrating the structure of a fluid transfer hole according to one embodiment of the present invention, and Fig. 11 is a drawing illustrating a table showing the ratios of the curves in Fig. 10.

[0013] 1 to 4, the valve of this embodiment is, for example, a diaphragm valve, and may include a hand wheel (100), a lock operating member (102), a bonnet (104), a body (106), at least one flange member (108), a cap (114), a lock member (200), a diaphragm (300), a spindle bush (304), a vertical movement member (306), a buffer member (308), and a fixed portion (400).

[0014] The hand wheel 100 is for controlling the opening and closing of the valve, and when the user rotates the hand wheel 100, for example, clockwise, the valve is closed, and when the user rotates the hand wheel 100 counterclockwise, the valve is opened. When the valve is opened, fluid can flow through the fluid transfer hole 122.

[0015] According to one embodiment, a space (112, e.g., a hole) is formed in a portion, e.g., a side surface, of the hand wheel (100), and the lock actuation member (102) can be inserted into the space (112). At this time, the lock actuation member (102) can be integrally coupled with the hand wheel (100). The lock actuation member (102) is a member for realizing the lock function of the valve.

[0016] According to one embodiment, as shown in FIG. 1, when the lock actuation member (102) is fully inserted into the space (112) of the hand wheel (100), the valve is unlocked, allowing the user to open or close the valve by rotating the hand wheel (100) clockwise or counterclockwise.

[0017] Meanwhile, as shown in Fig. 2, when a part of the lock operating member (102) protrudes outside the hand wheel (100), the hand wheel (100) cannot rotate, i.e., the valve is locked. Therefore, when a lock member (200, e.g., a padlock) is applied to the lock operating member (102), the lock member (200) cannot fully insert the lock operating member (102) into the space (112) of the hand wheel (100). As a result, the hand wheel (100) cannot rotate, and the opening and closing of the valve cannot be controlled freely.

[0018] That is, the valve is unlocked when the lock operating member (102) is advanced (pushed) toward the center of the hand wheel (100), and the valve is locked when the lock operating member (102) is advanced (pulled) toward the outside of the hand wheel (100). A detailed description of the valve locking operation will be given later.

[0019] The bonnet 104 is connected to the body 106, for example, via bolts, and can house members for opening and closing the fluid transfer hole 122. Here, the fluid transfer hole 122 is a space through which a fluid flows, and can include an inlet 122a, an outlet 122b, and an opening and closing port (center portion, 122c).

[0020] When a portion of the underside of the diaphragm (300) contacts a portion (912c) of the underside (912) of the body (106) or liner (120) through the opening (122c), the flow of the fluid is blocked, and when the underside of the diaphragm (300) is separated from the portion (912c) of the underside (912) of the body (106) or liner (120), the fluid begins to flow through the fluid transfer hole (122).

[0021] That is, the flow of the fluid can be opened and closed by moving the center of the diaphragm (300) up and down. At this time, the end of the diaphragm (300) can be connected to the body (106). As a result, when the diaphragm (300) is pulled or pushed, only the center of the diaphragm (300) moves up and down, that is, the stroke of the diaphragm (300) is variable. Meanwhile, the diaphragm (300) can be made of one layer, or it can be made of multiple layers, for example, four layers, as shown in FIG. 3.

[0022] For such movement of the diaphragm (300), a spindle bush (304), a vertical movement member (306), a buffer member (308) and a fixed portion (400) are used.

[0023] 3 and 4, the spindle bushing (304) is coupled to the hand wheel (100) so that it can rotate in response to the rotation of the hand wheel (100). The spindle bushing (304) can be inserted into the inner space of the hand wheel (100) and extended to the bonnet (104).

[0024] The vertical movement member (306) may have one end connected to the spindle bush (304) and the other end connected to the compressor (302).

[0025] According to one embodiment, the spindle bushing 304 and the vertical movement member 306 may be screwed together. As a result, when the spindle bushing 304 rotates, the vertical movement member 306 moves up and down. For example, when the hand wheel 100 is rotated clockwise to rotate the spindle bushing 304, the vertical movement member 306 moves down to lower the center of the diaphragm 300, and when the hand wheel 100 is rotated counterclockwise to rotate the spindle bushing 304, the vertical movement member 306 moves up to raise the center of the diaphragm 300.

[0026] The vertical movement member (306) may be coupled to the compressor (302) via a pin, for example, and one end may be extended through a hole (322) at the upper end of the bonnet (104).

[0027] The fixing part (e.g., bolt, 400) serves to fix the diaphragm (300). In this case, if there is no buffer member (308), the end of the vertically moving member (306) can directly impact the fixed part (400). Therefore, the buffer member (308) can be arranged between the vertically moving member (306) and the fixed part (400) to prevent the fixed part (400) from being directly impacted.

[0028] The body (106) is the main body of the valve and can be made of plastic or metal.

[0029] According to an embodiment, the body 106 may be made of an engineering plastic, for example, a polyphenylene ether resin composition containing polyphenylene ether resin and polystyrene resin as components. Of course, the body 106 may be made of engineering plastic such as POLYIMDE, POLYSULFONE, POLY PHENYLENE SULFIDE, POLYAMIDE IMIDE, POLYACRYLATE, POLYETHER SULFONE, POLYETHER ETHER KETONE, POLYETHER IMIDE, LIQUID CRYSTAL POLYESTER, POLYETHER KETONE, and combinations thereof.

[0030] According to another embodiment, the body 106 may be formed by mixing glass fiber with polyvinyl chloride (PVC), polypropylene (PP), polyphenylene sulfide (PPS), polyphthalamide (PPA), polyamide (PA6), polyamide (PA66), polyketone (POK), or polyethylene (PE). By manufacturing the body 106 in this manner, the strength, impact resistance, mechanical properties, etc. of the body 106 may be improved.

[0031] According to yet another embodiment, the body (106) can be formed by blending glass fiber and carbon fiber with, for example, polyvinyl chloride (PVC), polypropylene (PP), polyphenylene sulfide (PPS), polyphthalamide (PPA), polyamide (PA6), polyamide (PA66), polyketone (POK), or polyethylene (PE).

[0032] According to yet another embodiment, the body (106) may be formed by blending glass fiber, carbon fiber, and graphite with polyvinyl chloride (PVC), polypropylene (PP), polyphenylene sulfide (PPS), polyphthalamide (PPA), polyamide (PA6), polyamide (PA66), polyketone (POK), or polyethylene (PE).

[0033] A liner 120 is formed on the inner surface of the body 106, and a fluid transfer hole 122 through which a fluid flows may be formed inside the liner 120.

[0034] According to an embodiment, the liner (120) may be made of fluororesin. Fluororesin is a general term for resins containing fluorine in their molecules, and may be polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE), etc., for example, tetrafluoroethylene-perfluoroalkoxy vinyl ether coppolymer (PFA). Such fluororesins have excellent heat resistance, chemical resistance, and electrical insulation, a small coefficient of friction, and no adhesion or tackiness. That is, when the liner (120) is made of fluororesin, the coefficient of friction of the liner (120) is small, so that the change in flow rate due to laminar flow in the fluid transfer hole (122) can be minimized. That is, the difference between the flow rate at the upper or lower side of the fluid transfer hole and the flow rate at the center based on a specific point can be minimized.

[0035] According to one embodiment, a metal member (not shown) may be formed inside the body 106 by, for example, injection molding, so that the strength of the body 106 may be enhanced.

[0036] A flange member 108 may be formed at the end of the body 106. The flange member 108 may be coupled to a flange member of a pipe, so that the valve and the pipe may be coupled.

[0037] According to one embodiment, the flange member (108) is formed from plastic and may include a metal member (not shown) within the flange member (108).

[0038] The lock function will be examined in detail below. The bonnet (104), as shown in FIG. 3, may include a bonnet body (310) and a bonnet locking portion (312). The bonnet body (310) may have various shapes, for example a rectangular shape, and may be coupled to the body (106). The bonnet locking portion (312) protrudes from the bonnet body (310) and may have a width smaller than that of the bonnet body (310).

[0039] According to one embodiment, a space (322) into which the spindle bush (304) is inserted is formed inside the end of the bonnet locking part (312), and a locking protrusion (500) may be formed on the outside of the end as shown in Fig. 5. Here, the locking protrusion (500) may have a triangular shape similar to a screw thread, but is not limited to a rectangular shape as long as it engages with the lock operating member (102). From the viewpoint that the bonnet (104) is used for the locking function in a fixed state, the bonnet (104) may be referred to as a fixed locking part.

[0040] The locking protrusion (500) can be engaged with the protrusion (516) of the locking actuation member (102). Here, the locking protrusion (500) is illustrated as being formed on the entire outer end of the bonnet locking portion (312), but since it is sufficient to form a locking protrusion that can be engaged with the protrusion (516) of the locking actuation member (102), it may be formed only on a part of the bonnet locking portion (312).

[0041] For example, as shown in Figures 7 and 8, the locking protrusion 500 of the bonnet locking portion 312 can be coupled with the protrusion 516 on the inner surface of the locking actuation member 102. In this case, since the bonnet 104 is fixed, the hand wheel 100 cannot be rotated even if the user tries to rotate it. In other words, the valve is locked.

[0042] Meanwhile, when the user presses the lock operating member (102) inward, i.e., toward the center of the hand wheel (100), the protrusion (500) of the bonnet lock portion (312) and the lock protrusion (516) of the lock operating member (102) are separated as shown in Figures 5 and 6. As a result, the valve is unlocked and the user can turn the hand wheel (100) to open or close the flow of fluid.

[0043] For this operation, a space (530) is formed on the inner side of the lock operating member (102), and a protrusion (516) is formed on only a portion of the inner side, with the remaining portion being flat. As a result, as shown in Fig. 5, even if the flat portion of the lock operating member (102) comes into contact with the lock protrusion (500) of the bonnet lock portion (312), the lock operating member (102) and the bonnet lock portion (312) do not engage with each other. Therefore, when the user rotates the hand wheel (100), the lock operating member (102) rotates together with the hand wheel (100) while being inserted into the side of the hand wheel (100).

[0044] Looking specifically at the lock actuation member (102), the lock actuation member (102) may include a body (510), an insertion portion (512), a plug portion (514), and a protrusion support portion (518).

[0045] The body 510 has a space 530 formed inside, a locking protrusion 516 formed on a portion of the inner surface, and the other portion of the inside may be flat. Of course, although it is mentioned that the other portion is flat, it may have a concave-convex structure as long as it does not engage with the locking protrusion 500.

[0046] The insertion portion (512) is a portion that is inserted into the space (112) of the hand wheel (100) and can move forward or backward in the space (112) according to the user's control. As shown in FIGS. 7 and 8, a hole 540 may be formed in a portion of the insertion portion 512 into which the hook of the locking member 200 may be inserted.

[0047] The plug (514) can cover the space (112) as shown in FIG. 1 and can be integrally coupled to the hand wheel (100) at the space (112). However, when the user pulls the plug portion (514) outward, the plug portion (514) and at least a portion of the insertion portion (512) may protrude outside the hand wheel (100) as shown in FIG.

[0048] Also, when the user pushes the plug portion (514) toward the center of the hand wheel (100), the plug portion (514) can be aligned in line with the outer surface of the hand wheel (100) as shown in FIG.

[0049] The protrusion support portion (518) is formed at the rear end of the lock protrusion (516) to support the protrusion (516), and may have a cutout portion (532) formed in a portion thereof. The cutouts (532) can provide elasticity to the locking projections (516).

[0050] In summary, in the valve of this embodiment, when the lock operating member (102) is pulled toward the outside of the hand wheel (100), the lock protrusion (500) formed at the end of the bonnet (104) engages with the protrusion (516) of the lock operating member (102) to lock the valve, and when the lock operating member (102) is pushed toward the center of the hand wheel (100), the lock protrusion (500) of the bonnet (104) and the protrusion (516) of the lock operating member (102) separate to unlock the valve. That is, the lock of the valve can be controlled in the direction of the rotation axis. However, the valve may not have a lock function in the direction of the central axis (vertical axis). As a result, the lock structure of the valve can be simplified.

[0051] In the above description, the locking protrusion (500) is formed on the outer surface of the upper end of the bonnet (104). However, it is also possible that there is a separate member that is connected to the bonnet (104), and the locking protrusion is formed on the separate member, and the locking protrusion engages with the protrusion (516) of the lock operating member (102).

[0052] In the above description, it has been mentioned that the lock projection 500 of the bonnet 104 and the projection 516 of the lock operating member 102 are engaged with each other, but a groove or hole may be formed in the bonnet 104, and the projection 516 of the lock operating member 102 may be inserted into the groove or hole to be coupled. Of course, the reverse is also possible.

[0053] According to another embodiment, a groove or hole may be formed on the upper end of the bonnet (104), and a protrusion may be formed on the lower surface of the lock operating member (102), and the protrusion may be inserted into the groove or hole of the bonnet (104) to be coupled. Of course, the reverse is also possible. In this case, the lock operating member (102) must be structured to move up and down in order to lock or unlock the valve.

[0054] The structure of the fluid transfer hole (122) will be examined in detail below. 9 and 10, the fluid transfer hole (122) of this embodiment may be configured in a streamlined shape from the inlet (122a) or outlet (122b) to the central portion (122c) corresponding to the diaphragm (300).

[0055] Ideally, the fluid transfer hole 122 is configured in a streamlined shape from the inlet 122a to the center 122c and from the center 122c to the outlet 122b to maximize the amount of fluid transfer. However, in this case, the end of the liner 120 corresponding to the center 122c is too sharp, and there are process difficulties in manufacturing the valve, so the end portions 920 and 922 of the liner 120 corresponding to the center must be formed vertically. However, the vertically formed end portions 920 and 922 are manufactured with a minimum length H, which may be, for example, 12 mm or less.

[0056] In particular, the fluid transfer holes 122 may have a streamlined shape from the inlet 122a or outlet 122b toward the center 122c, i.e., a curve begins at the inlet 122a or outlet 122b.

[0057] In conventional valves, the fluid transfer hole is formed in a straight line from the inlet or outlet to a specific point and then vertically formed to the center, so the vertical part acts as an obstacle to the flow of fluid, resulting in a small amount of fluid transferred per unit time.

[0058] On the other hand, in the valve of the present invention, the fluid transfer hole 122 has a streamlined shape from the inlet 122a or outlet 122b to the center 122c, so there is no obstacle to impede the flow of fluid in the fluid transfer hole 122, and the amount of fluid transferred per unit time is significantly high.

[0059] In conventional valves, when the vertical portions are modified to be streamlined, the amount of fluid transported is greater than that of valves that include vertical portions, but the amount of fluid transported per unit time from the inlet (122a) or outlet (122b) toward the center is significantly less than that of the valves of the present invention that have a streamlined shape from the inlet (122a) or outlet (122b) toward the center.

[0060] That is, in the valve of the present invention, since the curve of the fluid transfer hole (122) starts from the inlet (122a) or the outlet (122b), the amount of fluid transferred per unit time is significantly higher than that of the conventional valve, i.e., the CV value can be significantly improved.

[0061] According to one embodiment, the width of the fluid transfer hole (122) may become smaller as it moves from the inlet (122a) or outlet (122b) to the center (122c). If the width of the fluid transfer hole (122) is the same when moving from the inlet (122a) or outlet (122b) to the center (122c), the range in which the diaphragm (300) is raised or lowered is large, so that, for example, the hand wheel (100) for adjusting the diaphragm (300) is turned up to 7.5 revolutions to normally perform the opening and closing operation. On the other hand, if the width of the fluid transfer hole (122) becomes smaller as it moves from the inlet (122a) or outlet (122b) to the center (122c), the range in which the diaphragm (300) is raised or lowered is relatively small, so that, for example, the hand wheel (100) for adjusting the diaphragm (300) is turned only 4 revolutions to smoothly perform the opening and closing operation.

[0062] The above has been discussed in detail from the perspective of the fluid transfer hole (122), but when viewed in detail from the perspective of the liner (120), the first inner upper surface line (910a), the first inner lower surface line (912a), the second inner upper surface line (910b), and the second inner lower surface line (912b) of the liner (120) may have a streamlined shape.

[0063] In addition, both side surfaces of the lower central portion (912c) of the liner (120) that contacts the diaphragm (300) may have a curved shape to facilitate the flow of fluid.

[0064] Meanwhile, in the valve of the present invention, the curvature of the fluid transfer hole 122 can be determined by considering not only the flow of the fluid but also the manufacturing process. In the conventional valve, the fluid transfer hole has to be manufactured with multiple liners because it includes a long vertical portion, but in the valve of the present invention, it can be manufactured with a single liner and therefore has an appropriate curvature ratio. As a result, the productivity of the conventional valve is low, but the productivity of the valve of the present invention can be greatly improved.

[0065] First, the radius of the imaginary central curve (1000) in the fluid transfer hole (122), the radius of the curve formed by the inner upper surface (910), the radius of the curve formed by the inner lower surface (912), the diameter of the inlet (122a) or outlet (122b) of the fluid transfer hole (122), the height and inter-face distance of the vertical portion adjacent to the central portion are respectively defined as R, R1, R2 or R3, DN, H, and L. Also, it is assumed that the left and right spaces of the fluid transfer hole (122) have the same structure.

[0066] According to one embodiment, the inner top surface (910) can have a curve that generally has a different curvature than the radius (R) of the central curve (1000) of the fluid transfer hole (122). That is, the curve of the inner top surface (910) can have a different curvature than the central curve (1000) of the fluid transfer hole (122).

[0067] However, if the interfacial distance (L) is equal to or greater than a preset value, the curve of the inner upper surface (910) may be formed of two curves having different curvatures for smooth valve operation. Here, the curvature of the curve closer to the diaphragm (300) among the two curves may be relatively large, and the curvature of the two curves may be different from that of the central curve (1000). This is to allow smooth removal of the single core inserted into the fluid transfer hole (122) during the manufacture of the liner (120).

[0068] For example, the curve of the inner upper surface (910) is formed by one curve when the face-to-face distance (L) is 230 mm or less, but can be formed by two curves when the face-to-face distance (L) exceeds 230 mm.

[0069] When the inner upper surface (910) is formed by one curve, the ratio of the radius (R1) of the curve formed by the inner upper surface (910) to the face-to-face distance (L) can be seen in the table of Fig. 11. In the case of a DN25 valve, the ratio can be in the range of 0.44 (70 / 160) to 0.64 (85 / 132), in the case of a DN40 valve, the ratio can be in the range of 0.45 (90 / 200) to 0.67 (110 / 165), and in the case of a DN50 valve, the ratio can be in the range of 0.41 (95 / 230) to 0.58 (115 / 197). Although not shown in the table, in the case of a DN150 valve, L can be in the range of 406 to 480, and R1 can be 170, so that R1 / L can be 0.354 (170 / 480) or more.

[0070] That is, the ratio of R1 to the face-to-face distance (L) may range from 0.354 (170 / 480) to 0.67 (110 / 165). Here, DN25 means that the face-to-face distance (L) of the inlet (122a) or outlet (122b) is 25 mm (φ), DN40 means that the face-to-face distance (L) of the inlet (122a) or outlet (122b) is 40 mm (φ), and DN50 means that the face-to-face distance (L) of the inlet (122a) or outlet (122b) is 50 mm (φ).

[0071] Looking at the inner lower surface (912), the inner lower surface (912) may be formed of two curves, a first curve (radius R2) corresponding to the inlet (122a) or outlet (122b) and a second curve (radius R3) near the diaphragm (300). Here, the first curve and the second curve may have different curvatures, and the first curve and the second curve may have a different curvature from the central curve (400, R) of the fluid transfer hole (122). However, R3 may not be present if the inter-face distance (L) is significantly large.

[0072] Looking at the ratio of R2 to the face-to-face distance (L), the ratio can range from 0.59 (95 / 160) to 0.83 (110 / 132) for DN25 valves, from 0.65 (130 / 200) to 0.91 (150 / 165) for DN40 valves, and from 0.63 (145 / 230) to 0.84 (165 / 197) for DN50 valves. In other words, the ratio of R2 to the face-to-face distance (L) can range from 0.59 (95 / 160) to 0.91 (150 / 165).

[0073] Looking at the ratio of R3 to the face-to-face distance (L), the ratio can range from 0.31 (50 / 160) to 0.49 (65 / 132) for DN25 valves, 0.33 (65 / 200) to 0.52 (85 / 165) for DN40 valves, and 0.37 (85 / 230) to 0.53 (105 / 197) for DN50 valves. In other words, the ratio of R3 to the face-to-face distance (L) can range from 0.31 (50 / 160) to 0.53 (105 / 197).

[0074] Looking at the ratio of R2 to R3, the ratio has a range of 1.46 (95 / 65) to 2.2 (110 / 50) for DN25 valves, 1.53 (130 / 85) to 2.31 (150 / 65) for DN40 valves, and 1.38 (145 / 105) to 1.94 (165 / 85) for DN50 valves. That is, the ratio of R2 to R3 can have a range of 1.38 (145 / 105) to 2.2 (110 / 50).

[0075] Looking at the ratio of R1 to R2, the ratio has a range of 0.64 (70 / 110) to 0.89 (85 / 95) for DN25 valves, a range of 0.6 (90 / 150) to 0.85 (110 / 130) for DN40 valves, and a range of 0.58 (95 / 165) to 0.79 (115 / 145) for DN50 valves. That is, the ratio of R1 to R2 can have a range of 0.58 (95 / 165) to 0.89 (85 / 95).

[0076] Looking at the ratio of R1 to R3, the ratio has a range of 1.08 (70 / 65) to 1.7 (85 / 50) for DN25 valves, 1.06 (90 / 85) to 1.69 (110 / 65) for DN40 valves, and 0.91 (95 / 105) to 1.35 (115 / 85) for DN50 valves. That is, the ratio of R1 to R3 can have a range of 0.91 (95 / 105) to 1.7 (85 / 50).

[0077] The height (H) of the vertical portion near the diaphragm (300) varies depending on the aperture, but can be within the range of 7 mm to 12 mm. Meanwhile, although only DN25, DN40 and DN50 valves have been mentioned above, the above ratios can be similarly applied to valves of other sizes.

[0078] In summary, in the valve of this embodiment, the fluid transfer hole 122 may have a streamlined shape from the inlet 122a or the outlet 122b to the center portion 122c corresponding to the diaphragm 300. In particular, the curve starts from the inlet 122a or the outlet 122b. Therefore, the amount of fluid transported per unit time may be improved.

[0079] In the above description, the left and right spaces of the fluid transfer hole 122 are formed symmetrically with the same structure, but they may have different structures, provided that both the left and right spaces have a streamlined shape.

[0080] Meanwhile, the components of the above-described embodiments can be easily understood from a process perspective. That is, each component can be understood as a respective process. Furthermore, the processes of the above-described embodiments can be easily understood from the perspective of the components of the device.

[0081] The scope of the present invention is defined by the claims set forth below, and all modifications and variations that fall within the meaning and scope of the claims and their equivalent concepts should be construed as being included within the scope of the present invention. [Explanation of symbols]

[0082] 100 Hand Wheel 102 Lock operating member 104 Bonnet 106 Body 108 Flange member 112 Space 114 Cap 120 Liner 122 Fluid transfer hole 122a Entrance 122b Exit 122c opening / closing mouth 200 Locking member 300 Diaphragm 302 Compressor ( 304 Spindle bush 306 Vertical movement member 308 Cushioning material 310 Bonnet body 312 Bonnet lock section 322 Upper hole 400 Fixed part 500 Lock protrusion 510 Main unit 512 Insertion part 514 Plug part 516 Protrusion 518 Protrusion support part 530 Space 532 Incision 540 holes 910a First inner upper surface line 910b Second inner upper surface line 912 Bottom surface 912a First inner underside line 912b Second inner underside line 912c Part of the underside 920, 922 End 1000 central curve

Claims

1. In the valve, Hand wheel and A lock operating member inserted into the space of the hand wheel; A fixed lock portion, The valve is locked by coupling at least a portion of the lock operating member and the fixed lock portion, and the valve is unlocked by separating the lock operating member and the fixed lock portion, the lock operating member is rotatable in response to rotation of the hand wheel when inserted into the hand wheel, and the fixed lock portion is used for locking the valve in a fixed state; When the lock operating member is advanced into the space of the hand wheel, the lock operating member and the fixed lock part are separated to unlock the valve, and when the lock operating member is advanced backward toward the outside of the hand wheel, the lock operating member and the fixed lock part are engaged to lock the valve, a hole is formed in a part of the lock operating member, and when the lock operating member is advanced backward toward the outside of the hand wheel, a part of the lock member is inserted into the hole to lock the valve, At least one protrusion is formed on a portion of an inner surface of the lock operating member that corresponds to one surface of the fixed lock part, but is not formed on another portion of the inner surface, and a lock protrusion is formed on an outer surface of the fixed lock part, When the lock operating member moves to the center of the hand wheel through a space formed on one side of the hand wheel, the protrusion of the lock operating member is separated from the lock protrusion of the fixed lock part, When the lock operating member is moved toward the outside of the hand wheel, the protrusion of the lock operating member is engaged with the lock protrusion of the fixed lock portion to lock the valve. A valve, characterized in that a protrusion support portion is formed at a rear end of the protrusion of the lock actuation member so as to support the protrusion, and a cutout portion is formed in a portion of the protrusion support portion.

2. The fixed lock portion is a bonnet, 2. The valve according to claim 1, wherein the lock operating member and the fixed lock portion are engaged in a rotational direction of the hand wheel, and the lock operating member realizes a locking function in the rotational direction of the hand wheel but does not realize a locking function in a central axis (vertical axis) direction of the valve.

3. Rotating the hand wheel clockwise or counterclockwise opens or closes the fluid flow in the fluid transfer hole; 3. The valve according to claim 2, wherein a locking protrusion is formed on an outer surface of an upper end of the bonnet, and the valve is locked by engaging a protrusion of a part of the lock operating member with the locking protrusion of the upper end of the bonnet.

4. The lock operating member is The main body, An insertion portion having a length extended from the main body; A plug portion formed at the end of the insertion portion; a protrusion support portion; A space is formed inside the main body, 3. The valve according to claim 2, wherein when the valve is unlocked, the lock operating member does not protrude outside the hand wheel, and when the valve is locked, a part of the insertion portion of the lock operating member and the plug portion protrude outside the hand wheel.

5. a body coupled to the bonnet and having a fluid transfer hole formed on an inner surface thereof; a spindle bushing coupled to the hand wheel on an inner surface of the hand wheel; a vertical movement member coupled to the spindle bush; a compressor coupled to the vertically moving member; a diaphragm coupled to the compressor, 3. The valve according to claim 2, wherein the spindle bush rotates when the hand wheel rotates, and the vertical movement member moves up and down when the spindle bush rotates, thereby varying the stroke of the diaphragm.

6. a body coupled to the bonnet; a liner formed on an inner surface of the body, The inner surface of the liner is formed with a fluid transfer hole through which a fluid flows, 3. The valve of claim 2, wherein an inner surface of the liner corresponding to the fluid transfer hole has a streamlined shape from the inlet to the center in a direction from the inlet to the center.

7. In the lock operating member used for the locking operation, The main body, An insertion portion having a length extended from the main body, A space is formed inside the body, and a protrusion is formed on a part of an inner surface of the body, and the protrusion performs a locking operation when it is coupled with a protrusion of an external locking part, and the lock is released when the protrusion is separated from the protrusion of the external locking part, The engagement or disengagement of the locking protrusion with the protrusion is determined according to the movement of the insertion portion; the protrusion is formed on a portion of the inner surface of the body corresponding to one surface of the outer lock part, but not on the other portion of the inner surface, the lock protrusion is formed on an outer surface of the fixed lock part, and when the lock operating member is advanced into the space of the hand wheel, the protrusion of the lock operating member and the lock protrusion of the outer lock part are separated to unlock the valve, and when the lock operating member is advanced backward toward the outside of the hand wheel, the protrusion of the lock operating member and the lock protrusion of the outer lock part are engaged with each other to lock the valve, a hole is formed in a portion of the lock operating member, and when the lock operating member is advanced backward toward the outside of the hand wheel, a hook of the lock member is inserted into the hole to lock the valve, A lock actuation member, characterized in that a protrusion support portion is formed at a rear end of the protrusion of the lock actuation member so as to support the protrusion, and a cutout portion is formed in a part of the protrusion support portion.

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