Valve dismounting and mounting device

Abstract

The utility model provides a valve dismounting and mounting device, which relates to the technical field of valve dismounting and mounting, and comprises a fixing frame, a limiting frame and a hold-down frame, the limiting frame is detachably connected to the bottom of the fixing frame, the hold-down frame is located above the limiting frame, and the hold-down frame is detachably connected to the bottom of the fixing frame. The pressing and holding frame is movably connected with the fixing frame, the position, relative to the fixing frame, of the pressing and holding frame is adjustable in the direction gradually getting close to or getting away from the limiting frame, and the pressing and holding frame and the limiting frame are used for clamping the valve upper cover and the valve lower cover in a matched mode. The valve dismounting device provided by the utility model has the advantages that the valve dismounting device is suitable for a rice-covered steam valve, and the resistance which needs to be overcome when the screws are dismounted by dismounting personnel is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of valve disassembly and assembly technology, and in particular to a valve disassembly and assembly device. Background Technology

[0002] GEM Pneumatic control valves and on / off valves are commonly used for switching and regulating steam and chilled water. Because steam systems operate at high temperatures, valve seals require regular inspection and replacement. Specifically, the internal seal needs to be inspected every six months, and the seal itself needs to be replaced every twelve months. When inspecting and replacing the seal, the valve cover must be disassembled. First, the top cover screws must be removed to remove the top cover and thus the springs and seals. The pressure of the three springs (inner and outer) is approximately two tons, all acting on the three long, loose screws used for disassembly. Therefore, the resistance during disassembly and assembly is extremely high.

[0003] Existing valve disassembly tools require the entire tool to penetrate the upper and lower covers of the valve. This necessitates removing several screws between the upper and lower covers before the disassembly tool can be installed. Disassembly personnel still need to overcome significant resistance when removing these screws. Furthermore, the upper cover of the Gemi pneumatic valve does not have a through hole; the screws directly penetrate the lower cover and are tightened inside the upper cover. This makes traditional disassembly tools unsuitable for disassembling Gemi steam valves. Utility Model Content

[0004] The purpose of this utility model is to provide a valve disassembly and assembly device, which has the advantages of being suitable for Gaimi steam valves and effectively reducing the resistance that disassembly personnel need to overcome when disassembling the above-mentioned screws.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model provides a valve disassembly and assembly device, including a fixed frame, a limiting frame, and a pressing frame. The limiting frame is detachably connected to the bottom of the fixed frame, and the pressing frame is located above the limiting frame. The pressing frame is movably connected to the fixed frame and its position relative to the fixed frame is adjustable in the direction of gradually approaching or moving away from the limiting frame. The pressing frame and the limiting frame are used to cooperate in clamping the upper cover and lower cover of the valve.

[0007] Furthermore, the fixing frame includes a fixing plate and a connecting rod assembly. One end of the connecting rod assembly is fixedly connected to the fixing plate, and the other end is detachably connected to the limiting frame. The pressure frame is movably connected to the fixing plate and / or the connecting rod assembly.

[0008] Furthermore, the connecting rod assembly includes at least three connecting rods, each of which is evenly spaced around the axis of the fixed disk. One end of each connecting rod is fixedly connected to the fixed disk, and the other end is detachably connected to the limiting frame.

[0009] Furthermore, the end of the connecting rod away from the fixed plate has a support base, and the support base has a bearing plate protruding inward in a direction parallel to the radial direction of the fixed plate. The bearing plate is detachably connected to the limiting frame.

[0010] Furthermore, the limiting frame includes multiple connecting plates, and any two adjacent connecting rods are detachably connected to the connecting plates.

[0011] Furthermore, the adjacent ends of two connecting plates are stacked and detachably mounted on the same connecting rod via the same connector.

[0012] Furthermore, the pressure holder includes a lead screw and a pressure plate. The lead screw is threadedly engaged with the fixed plate, the pressure plate is located below the lead screw and rotatably connected to the lead screw, and the pressure plate slides with the connecting rod assembly in a direction that gradually approaches or moves away from the limiting frame.

[0013] Furthermore, the end of the lead screw opposite to the pressure plate is provided with an operating element for engaging with a wrench.

[0014] Furthermore, the pressure plate includes a plate body and a guide ring assembly. The middle part of the plate body is rotatably connected to the lead screw, and the edge of the plate body is connected to the guide ring assembly. The guide ring assembly slides in cooperation with the connecting rod assembly in a direction that gradually approaches or moves away from the limiting frame.

[0015] Furthermore, the disc body has a recessed cavity on the side opposite to the lead screw for engaging with the protrusion on the top of the valve cover.

[0016] The valve disassembly and assembly device provided by this utility model can produce the following beneficial effects:

[0017] When using the valve disassembly and assembly device, first disconnect the connection between the limit bracket and the fixed bracket, place the fixed bracket on the valve, and then connect the limit bracket and the fixed bracket. After the connection is complete, adjust the position of the holding bracket relative to the fixed bracket in a direction that gradually moves closer to the limit bracket until the upper and lower valve covers are tightly clamped between the holding bracket and the limit bracket. At this point, all the bottom screws of the lower valve cover can be loosened. After loosening, adjust the position of the holding bracket relative to the fixed bracket in a direction that gradually moves away from the limit bracket. After the spring force inside the valve cover is completely released, remove the limit bracket, take off the device, and perform valve maintenance.

[0018] Compared with the prior art, the valve disassembly and assembly device provided by this utility model does not require penetrating the upper and lower covers of the valve, and is suitable for steam valves. At the same time, during the process of disassembling the screws, the pressure holder and the limiting holder can clamp the upper and lower covers of the valve, effectively reducing the resistance that the disassembly personnel need to overcome when disassembling the above screws. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural schematic diagram of a valve disassembly and assembly device provided in an embodiment of this utility model;

[0021] Figure 2 A three-dimensional structural diagram of the fixing frame and the pressure holding frame when they are in cooperation, provided in an embodiment of this utility model;

[0022] Figure 3 A three-dimensional structural diagram of the distribution structure of the fixing frame provided in an embodiment of this utility model;

[0023] Figure 4 This is a front view of the pressure holder provided in an embodiment of the present utility model.

[0024] Icons: 1 - Fixed frame; 11 - Fixed plate; 12 - Connecting rod; 121 - Support base; 1211 - Bearing plate; 122 - Connecting part; 123 - Locking part; 2 - Limiting frame; 21 - Connecting plate; 3 - Pressing frame; 31 - Lead screw; 32 - Pressing plate; 321 - Plate body; 3211 - Cavity; 322 - Guide ring assembly; 33 - Operating part; 4 - Connecting part. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] This embodiment provides a valve disassembly and assembly device, such as... Figure 1 As shown, it includes a fixed frame 1, a limiting frame 2, and a pressing frame 3. The limiting frame 2 is detachably connected to the bottom of the fixed frame 1, and the pressing frame 3 is located above the limiting frame 2. The pressing frame 3 is movably connected to the fixed frame 1 and its position relative to the fixed frame 1 is adjustable in the direction of gradually approaching or moving away from the limiting frame 2. The pressing frame 3 and the limiting frame 2 are used to clamp the upper cover and the lower cover of the valve.

[0030] When using, such as Figure 2 As shown, first disconnect the limit bracket 2 from the fixed bracket 1, then put the fixed bracket 1 on the valve, and then connect the limit bracket 2 to the fixed bracket 1. At this time, the limit bracket 2 is located below the valve lower cover. After the connection is completed, adjust the position of the pressure holding bracket 3 relative to the fixed bracket 1 in the direction of gradually approaching the limit bracket 2 until the valve upper cover and valve lower cover are tightly clamped between the pressure holding bracket and the limit bracket. At this time, all the bottom screws of the valve lower cover can be loosened. After loosening, adjust the position of the pressure holding bracket 3 relative to the fixed bracket 1 in the direction of gradually moving away from the limit bracket 2. After the spring force inside the valve cover is completely released, remove the limit bracket 2, take off the device, and perform maintenance on the valve.

[0031] The valve disassembly and assembly device provided in the above embodiment does not require penetrating the upper and lower covers of the valve, and is suitable for steam valves. At the same time, during the process of disassembling the screws, the pressure holder 3 and the limit holder 2 can clamp the upper and lower covers of the valve, effectively reducing the resistance that the disassembly personnel need to overcome when disassembling the above screws.

[0032] In alternative implementations, such as Figure 1 and Figure 2 As shown, the fixing frame 1 includes a fixing plate 11 and a connecting rod assembly. One end of the connecting rod assembly is fixedly connected to the fixing plate 11, and the other end is detachably connected to the limiting frame 2. The pressing frame 3 is movably connected to the fixing plate 11 and / or the connecting rod assembly.

[0033] In the above embodiments, the fixing plate 11 serves to fix the connecting rod assembly. In use, the connecting rod assembly can be arranged around the outside of the valve upper cover and the valve lower cover, and the bottom of the connecting rod assembly can extend below the valve lower cover, ensuring that the limiting frame 2 can be located below the valve lower cover after being connected to the connecting rod assembly.

[0034] In an optional embodiment, the connecting rod assembly includes at least three connecting rods 12, each connecting rod 12 being evenly spaced around the axis of the fixed disk 11, with one end of each connecting rod 12 being fixedly connected to the fixed disk 11 and the other end being detachably connected to the limiting frame 2.

[0035] by Figure 2 For example, the connecting rod assembly includes three connecting rods 12. The three connecting rods 12 can form three connection points below the valve cover. The limiting frame 2 can be connected to the above three connection points to form a stable limiting structure. When the limiting frame 2 abuts against the valve cover, it can be effectively locked onto the bottom surface of the valve cover and is not easy to loosen.

[0036] Of course, the connecting rod assembly may also include four, five or even more connecting rods 12, and the number is not specifically limited here.

[0037] Specifically, the fixed plate 11 is provided with multiple connecting rods, each of which extends radially along the fixed plate 11 and is distributed in a radial pattern. The top of each connecting rod 12 can be welded to each other in a corresponding manner.

[0038] In alternative implementations, such as Figure 2 As shown, to facilitate the connection between the limiting frame 2 and the connecting rod 12, the end of the connecting rod 12 away from the fixed plate 11 has a support base 121. The support base 121 has a bearing plate 1211 protruding inward in a direction parallel to the radial direction of the fixed plate 11. The bearing plate 1211 is detachably connected to the limiting frame 2.

[0039] In the above embodiment, the bottom end of the connecting rod 12 has a support base 121. The bearing plate 1211 on the support base 121 can support the limiting frame 2, thereby facilitating the connection between the limiting frame 2 and the connecting rod 12, without needing to sleeve the limiting frame 2 on the connecting rod 12.

[0040] Specifically, such as Figure 2 As shown, the support base 121 includes a nut and an L-shaped plate. The nut can be sleeved on the outside of the connecting rod 12. The vertically arranged plate in the L-shaped plate is welded to the side wall of the nut. The horizontally extending plate in the L-shaped plate is the aforementioned bearing plate 1211. The bearing plate 1211 has a connecting hole.

[0041] The above-mentioned nut can be configured as one, or as two, three, or more, such as... Figure 2The aforementioned nuts are configured in pairs, with the two nuts stacked together and welded together to the L-shaped plate, which can ensure the support stability of the support base 121.

[0042] To facilitate the installation of the support base 121, the nut in the support base 121 can be welded to the connecting rod 12, or as follows: Figure 2 and Figure 3 As shown, the nut in the support 121 can slide and engage with the connecting rod 12 along the extension direction of the connecting rod 12. The bottom end of the connecting rod 12 also has a connecting part 122, and a locking member 123 is threadedly connected to the connecting part 122. The locking member 123 can prevent the nut in the support 121 from slipping off the connecting rod 12.

[0043] Among them, the locking element 123 may be, but is not limited to, a nut.

[0044] In alternative implementations, such as Figure 1 As shown, the limiting frame 2 includes multiple connecting plates 21, and any two adjacent connecting rods 12 are detachably connected by a connecting plate 21.

[0045] In the above embodiments, the structure of the limiting frame 2 is simple. When the connecting rod 12 is configured as three rods, the limiting frame 2 can include three connecting plates 21. The three connecting plates 21 are connected to form a triangular structure, which can stably abut against the lower cover of the valve during use.

[0046] In alternative implementations, such as Figure 1 As shown, the ends of two adjacent connecting plates 21 are stacked together and can be detachably installed on the support base 121 of the same connecting rod 12 through the same connector 4.

[0047] The above arrangement allows the ends of two adjacent connecting plates 21 that are close to each other to be mounted on the bearing plate 1211 of the same connecting rod 12 through a connector 4, which can improve the installation efficiency of the connecting plates 21 and reduce the number of connectors 4 used.

[0048] Of course, the ends of two adjacent connecting plates 21 that are close to each other may not be stacked. The two ends are connected to different positions of the same support plate 1211 and are connected to the support plate 1211 by two connectors 4 respectively.

[0049] The pressure holder 3 can be movably connected to the fixed plate 11 or the connecting rod assembly, or it can be movably connected to the fixed plate 11 and the connecting rod assembly.

[0050] In alternative implementations, such as Figure 1 As shown, the pressure holder 3 includes a lead screw 31 and a pressure plate 32. The lead screw 31 is threadedly engaged with the fixed plate 11. The pressure plate 32 is located below the lead screw 31 and is rotatably connected to the lead screw 31. The pressure plate 32 slides with the connecting rod assembly in a direction that gradually approaches or moves away from the limit frame 2.

[0051] When in use, rotating the lead screw 31 causes the position of the bottom end of the lead screw 31 relative to the limit frame 2 to change due to the threaded engagement between the lead screw 31 and the fixed plate 11. Since the pressure plate 32 is rotatably connected to the lead screw 31 and the pressure plate 32 is slidably engaged with the connecting rod assembly, the lead screw 31 can simultaneously drive the pressure plate 32 to slide relative to the connecting rod assembly in a direction that gradually approaches the limit frame 2, so that the pressure plate 32 presses down on the valve cover.

[0052] The aforementioned pressure holder 3 has a simple structure and is easy for users to operate.

[0053] In an optional embodiment, to facilitate the user's rotation of the lead screw 31, such as... Figure 1 As shown, the end of the lead screw 31 facing away from the pressure plate 32 is provided with an operating element 33 for engaging with a wrench.

[0054] When in use, a wrench or electric wrench can be used in conjunction with the operating part 33 to rotate the screw 31, making it convenient for the user to apply force.

[0055] Specifically, the aforementioned operating component 33 can be a nut.

[0056] In alternative implementations, such as Figure 1 As shown, the pressure plate 32 includes a plate body 321 and a guide ring assembly 322. The middle part of the plate body 321 is rotatably connected to the lead screw 31 so that the lead screw 31 can press the plate body 321 against the valve cover. The edge of the plate body 321 is connected to the guide ring assembly 322. The guide ring assembly 322 slides in cooperation with the connecting rod assembly in the direction of gradually approaching or moving away from the limit frame 2.

[0057] In the above embodiments, the disc 321 can achieve sliding engagement with the connecting rod assembly through the guide ring assembly 322, ensuring the stability of the disc 321 during the sliding process.

[0058] The guide ring assembly 322 may include multiple guide rings, which are respectively sleeved on the outside of multiple connecting rods 12 and slide in cooperation with the corresponding connecting rods 12.

[0059] The guide ring can be a nut, which is welded onto the disc 321, making it easy to source and install the guide ring.

[0060] In alternative implementations, such as Figure 4 As shown, the disc body 321 has a recessed cavity 3211 on the side opposite to the lead screw 31 for engaging with the protrusion on the top of the valve cover.

[0061] The above configuration allows the cavity 3211 to accommodate the protrusion on the top of the valve cover when the disc 321 contacts the valve cover, thus preventing excessive stress concentration when the disc 321 applies pressure to the valve cover.

[0062] In actual use, according to the planned maintenance cycle, each Gaimi pneumatic valve needs to be maintained twice a year and the diaphragm needs to be replaced once a year. There are a total of 16 Gaimi pneumatic valves on the entire production line, which require disassembly and assembly 48 times a year. If the disassembly and assembly is done manually, each time takes 100 minutes, and the total time taken throughout the year is about 4800 minutes.

[0063] After using the above device, maintenance personnel will spend 20 minutes on each maintenance, 48 times a year, and 960 minutes on maintenance, which can save 3840 minutes of maintenance time.

[0064] Therefore, by using the valve disassembly and assembly device provided in the above embodiments, the labor intensity of employees is not only effectively reduced from the original 2-3 people operating and taking 100 minutes, but also reduced to 1 person operating and taking less than 20 minutes to complete the task easily. This effectively reduces maintenance time and does not require excessive physical exertion. It solves the problems of high-intensity work for maintenance personnel and the risk of the valve cover being blown away by the spring. It is suitable for valves whose upper or lower covers do not have through holes.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A valve disassembly and assembly device, characterized in that, It includes a fixed frame (1), a limiting frame (2) and a pressing frame (3). The limiting frame (2) is detachably connected to the bottom of the fixed frame (1). The pressing frame (3) is located above the limiting frame (2). The pressing frame (3) is movably connected to the fixed frame (1) and its position relative to the fixed frame (1) is adjustable in the direction of gradually approaching or moving away from the limiting frame (2). The pressing frame (3) and the limiting frame (2) are used to cooperate in clamping the upper cover and the lower cover of the valve.

2. The valve disassembly and assembly device according to claim 1, characterized in that, The fixing frame (1) includes a fixing plate (11) and a connecting rod assembly. One end of the connecting rod assembly is fixedly connected to the fixing plate (11), and the other end is detachably connected to the limiting frame (2). The pressing frame (3) is movably connected to the fixing plate (11) and / or the connecting rod assembly.

3. The valve disassembly and assembly device according to claim 2, characterized in that, The connecting rod group includes at least three connecting rods (12), and each of the connecting rods (12) is evenly spaced around the axis of the fixed disk (11).

4. The valve disassembly and assembly device according to claim 3, characterized in that, The connecting rod (12) has a support base (121) at one end away from the fixed plate (11). The support base (121) has a bearing plate (1211) protruding inward in a direction parallel to the radial direction of the fixed plate (11). The bearing plate (1211) is detachably connected to the limiting frame (2).

5. The valve disassembly and assembly device according to claim 3, characterized in that, The limiting frame (2) includes multiple connecting plates (21), and any two adjacent connecting rods (12) are detachably connected to the connecting plates (21).

6. The valve disassembly and assembly device according to claim 3, characterized in that, The adjacent ends of two connecting plates (21) are stacked and can be detachably installed on the same connecting rod (12) through the same connector (4).

7. The valve disassembly and assembly device according to claim 2, characterized in that, The pressure holder (3) includes a lead screw (31) and a pressure plate (32). The lead screw (31) is threadedly engaged with the fixed plate (11). The pressure plate (32) is located below the lead screw (31) and is rotatably connected to the lead screw (31). The pressure plate (32) is slidably engaged with the connecting rod assembly in a direction that gradually approaches or moves away from the limiting frame (2).

8. The valve disassembly and assembly device according to claim 7, characterized in that, The end of the lead screw (31) facing away from the pressure plate (32) is provided with an operating element (33) for engaging with a wrench.

9. The valve disassembly and assembly device according to claim 7, characterized in that, The pressure plate (32) includes a plate body (321) and a guide ring assembly (322). The middle part of the plate body (321) is rotatably connected to the lead screw (31), and the edge of the plate body (321) is connected to the guide ring assembly (322). The guide ring assembly (322) slides in cooperation with the connecting rod assembly in a direction that gradually approaches or moves away from the limiting frame (2).

10. The valve disassembly and assembly device according to claim 9, characterized in that, The disc body (321) has a recessed cavity on the side opposite to the lead screw (31) for engaging with the protrusion on the top of the valve cover.

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