Valve side-mounted manual device

Abstract

The utility model relates to the technical field of valve hand-operated devices, in particular to a valve side-mounted hand-operated device which comprises a valve body, a valve rod, a transmission assembly, a limiting assembly, a support, a supporting frame and a pneumatic device, the limiting assembly is arranged at the top of the valve body, and the support is arranged at the top of the limiting assembly. The valve rod is arranged in the valve body, the limiting device and the support in a penetrating mode, the support is sleeved with the supporting frame, the transmission assembly comprises a bevel gear shaft, a bevel gear and a valve rod nut, the valve rod nut is rotationally connected to the supporting frame, the valve rod is in threaded connection with the valve rod nut, and the bevel gear is fixedly connected to the top of the valve rod nut and is in meshing transmission with the bevel gear shaft. The output end of the pneumatic device is in transmission connection with the bevel gear. The transmission assembly allows the pneumatic device and the manual device to control opening and closing of the valve at the same time, a switching handle does not need to be used for switching the opening and closing modes of the valve, and use of the valve is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of valve manual devices, and in particular to a valve side-mounted manual device. Background Art

[0002] The valve manual device is a device used to manually drive the valve stem to move or rotate to control the opening and closing of the valve. The manual device is sometimes used in a side-mounted manner in conjunction with a pneumatic device to provide different modes for the opening and closing of the valve.

[0003] For the pneumatic side-mounted manual devices currently on the market, when the pneumatic mode is converted to manual mode, the pneumatic device must be in a de-aired state, and the switching handle must be turned to make the opening and closing nut and the valve stem in a normal meshing state. At this time, turning the handwheel on the manual device can control the opening and closing of the valve; when pneumatic is needed, the switching handle must be turned to make the opening and closing nut and the valve stem disengaged. At this time, turning the handwheel on the manual device cannot open and close the valve. If the operating staff neglects to turn the switching handle to the pneumatic position and turns on the pneumatic device, the thread of the valve stem may be damaged, causing irreparable losses. Utility Model Content

[0004] The embodiment of the present application provides a valve side-mounted manual device, which can improve the technical problem existing in the prior art that a conversion handle must be used to switch the opening and closing modes.

[0005] An embodiment of the present application provides a valve side-mounted manual device, including a valve body, a valve stem, a transmission assembly, a limit assembly, a bracket, a support frame and a pneumatic device, wherein the limit assembly is arranged at the top of the valve body and is used to limit the rotation of the valve stem, the bracket is arranged at the top of the limit assembly, the valve stem is respectively inserted into the valve body, the limit device and the bracket, the support frame is sleeved on the bracket, the transmission assembly includes a bevel gear shaft, a bevel gear and a valve stem nut, the valve stem nut is rotatably connected to the support frame, one end of the valve stem is provided with a thread, the valve stem is threadedly connected to the valve stem nut, the bevel gear is fixedly connected to the top of the valve stem nut, one end of the bevel gear shaft passes through the support frame and meshes with the bevel gear for transmission, the pneumatic device is arranged at the top of the bracket, and the output end of the pneumatic device passes through the bracket and the support frame and is transmission-connected to the bevel gear.

[0006] The above-mentioned technical scheme in the embodiment of the present application has at least the following technical effects: when the staff uses the pneumatic device to control the opening and closing of the valve body, the output end of the pneumatic device rotates to drive the bevel gear and the valve stem nut to rotate, and the bevel gear drives the bevel gear shaft to rotate. The bevel gear shaft used for manually opening and closing the valve body does not affect the operation of the pneumatic device. Since the valve stem is restricted by the limit device and cannot rotate, the valve stem moves up and down under the drive of the valve stem nut to realize the opening and closing of the valve body. When the staff uses the bevel gear shaft to manually open and close the valve body, if the pneumatic device is in working state at this time, the output shaft of the pneumatic device is fixed and cannot rotate, and the bevel gear shaft cannot rotate due to the resistance of the bevel gear. At this time, the staff can close the pneumatic device to make the pneumatic device in a deflated state, and then rotate the bevel gear shaft to drive the bevel gear and the valve stem nut to move the valve stem up and down to control the opening and closing of the valve body.

[0007] The transmission assembly provided in the valve side-mounted manual device provided in the embodiment of the present application allows the pneumatic device and the manual device to control the opening and closing of the valve at the same time, without having to use a switching handle to switch the opening and closing mode of the valve, thereby facilitating the use of the valve.

[0008] In some embodiments, the limit assembly includes a limit bracket, a first through hole is opened inside the limit bracket, a plurality of limit protrusions are arranged on the inner wall of the first through hole, the valve stem passes through the first through hole and is slidably connected to the limit bracket, a limit groove is opened on the outer peripheral surface of the valve stem, and the limit protrusion is slidably connected inside the limit groove.

[0009] In some embodiments, the bottom of the limit bracket is connected to the valve body by a fixing bolt, and a first installation groove is opened at one end of the limit bracket close to the valve body, a sealing ring is arranged inside the first installation groove, the valve stem passes through the sealing ring and is slidably connected to the sealing ring, and one side of the sealing ring abuts against the top of the valve body.

[0010] In some embodiments, a handwheel is provided at the end of the bevel gear shaft away from the bevel gear, and the valve stem nut includes a nut body and a threaded core. One end of the nut body is rotatably connected to the support frame, a second through hole is provided inside the nut body, and a second mounting groove is also provided at the bottom of the nut body. The threaded core is clamped in the second mounting groove, and one end of the valve stem close to the bevel gear is threadedly connected to the threaded core.

[0011] In some embodiments, the bracket includes a base plate, a sealing plate and a support column, the base plate is arranged on the top of the limit bracket, the support frame is arranged on the top of the base plate, the limit bracket, base plate and support frame are connected to each other by fixing bolts, one end of the support column passes through the support frame and is welded to the top of the base plate, the sealing plate is arranged on the end of the support column away from the base plate, the sealing plate is connected to the support column by fixing bolts, and the pneumatic device is arranged on the top of the sealing plate.

[0012] In some embodiments, a third mounting groove is provided at the top of the support frame, and a guide ring is also provided at the top of the support frame. One end of the guide ring is rotatably connected inside the third mounting groove. The guide ring is connected to the support frame through a fixing bolt, and the output end of the pneumatic device passes through the guide ring and is rotatably connected to the guide ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 A schematic diagram of the overall structure of a valve side-mounted manual device provided in an embodiment of the present application;

[0015] Figure 2 A cross-sectional view of a valve side-mounted manual device provided in an embodiment of the present application;

[0016] Figure 3 for Figure 2 A magnified view of part A;

[0017] Figure 4 for Figure 2 A magnified view of part B;

[0018] Figure 5 It is a schematic diagram of the overall structure of the valve stem nut;

[0019] Figure 6 Schematic diagram of the explosion structure of the limit assembly and the valve stem.

[0020] Among them, the reference numerals in the figure are:

[0021] 1. Valve body; 2. Valve stem; 21. Limiting groove; 31. Bevel gear shaft; 311. Hand wheel; 32. Bevel gear; 33. Valve stem nut; 331. Nut body; 3311. Second through hole; 3312. Second mounting groove; 332. Threaded core; 41. Limiting bracket; 411. First through hole; 412. Limiting protrusion; 413. First mounting groove; 42. Sealing ring; 51. Bottom plate; 52. Closing plate; 522. Guide ring; 53. Support column; 6. Support frame; 61. Third mounting groove; 7. Pneumatic device. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0028] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] The valve manual device is a device used to manually drive the valve stem to move or rotate to control the opening and closing of the valve. The manual device is sometimes used in a side-mounted manner in conjunction with a pneumatic device to provide different modes for the opening and closing of the valve.

[0030] For the pneumatic side-mounted manual devices currently on the market, when the pneumatic mode is converted to manual mode, the pneumatic device must be in a de-aired state, and the switching handle must be turned to make the opening and closing nut and the valve stem in a normal meshing state. At this time, turning the handwheel on the manual device can control the opening and closing of the valve; when pneumatic is needed, the switching handle must be turned to make the opening and closing nut and the valve stem disengaged. At this time, turning the handwheel on the manual device cannot open and close the valve. If the operating staff neglects to turn the switching handle to the pneumatic position and turns on the pneumatic device, the thread of the valve stem may be damaged, causing irreparable losses.

[0031] Based on this, in order to improve the problems in the related art, the embodiments of the present application provide the following solutions.

[0032] Please also read Figures 1 to 4 An embodiment of the present application provides a valve side-mounted manual device, including a valve body 1, a valve stem 2, a transmission assembly, a limit assembly, a bracket, a support frame 6 and a pneumatic device 7.

[0033] Please also read Figures 1 to 6One end of the valve stem 2 is inserted into the valve body 1, and the limiting assembly includes a limiting bracket 41. A first through hole 411 is provided inside the limiting bracket 41, and a plurality of limiting protrusions 412 are provided on the inner wall of the first through hole 411. The valve stem 2 passes through the first through hole 411 and is slidably connected with the limiting bracket 41. A limiting groove 21 is provided on the outer circumferential surface of the valve stem 2, and the limiting protrusion 412 is slidably connected inside the limiting groove 21. The bottom of the limiting bracket 41 is connected to the valve body 1 through a fixing bolt. A first mounting groove 413 is provided at one end of the limiting bracket 41 close to the valve body 1, and a sealing ring 42 is provided inside the first mounting groove 413. The valve stem 2 The valve stem 2 passes through the sealing ring 42 and is slidably connected with the sealing ring 42. One side of the sealing ring 42 abuts against the top of the valve body 1. The bracket is arranged on the top of the limiting bracket 41. The bracket includes a bottom plate 51, a sealing plate 52 and a support column 53. The bottom plate 51 is arranged on the top of the limiting bracket 41. The support frame 6 is arranged on the top of the bottom plate 51. The limiting bracket 41, the bottom plate 51 and the support frame 6 are connected to each other by fixing bolts. One end of the valve stem 2 passes through the bottom plate 51 and the support frame 6 and is slidably connected with the bottom plate 51 and the support frame 6. One end of the support column 53 passes through the support frame 6 and is welded to the top of the bottom plate 51. The sealing plate 52 is arranged on the support column 53 away from the bottom plate 51. The sealing plate 52 is connected to the support column 53 by fixing bolts, and the pneumatic device 7 is arranged on the top of the sealing plate 52; the transmission assembly includes a bevel gear shaft 31, a bevel gear 32 and a valve stem nut 33, the valve stem nut 33 includes a nut body 331 and a threaded core 332, one end of the nut body 331 is rotatably connected to the support frame 6, a second through hole 3311 is provided inside the nut body 331, and a second mounting groove 3312 is also provided at the bottom of the nut body 331, and the threaded core 332 is clamped in the second mounting groove 3312, one end of the valve stem 2 is provided with a thread, and the end of the valve stem 2 close to the bevel gear 32 is connected to the threaded core 332 Threaded connection, the bevel gear 32 is fixedly connected to the top of the valve stem nut 33, one end of the bevel gear shaft 31 passes through the support frame 6 and meshes with the bevel gear 32 for transmission, a handwheel 311 is provided at the end of the bevel gear shaft 31 away from the bevel gear 32, a third mounting groove 61 is provided on the top of the support frame 6, and a guide ring 522 is also provided on the top of the support frame 6, one end of the guide ring 522 is rotatably connected inside the third mounting groove 61, the guide ring 522 is connected to the support frame 6 by a fixing bolt, and the pneumatic device 7 is arranged on the top of the sealing plate 52, and the output end of the pneumatic device 7 passes through the sealing plate 52, the guide ring 522 and the support frame 6 and is in transmission connection with the bevel gear 32.

[0034] As can be seen from the above, the embodiment of the present application provides a valve side-mounted manual device. When the staff uses the pneumatic device 7 to control the opening and closing of the valve body 1, the output end of the pneumatic device 7 rotates to drive the bevel gear 32 and the valve stem nut 33 to rotate, and the bevel gear 32 drives the bevel gear shaft 31 to rotate. The bevel gear shaft 31 and the handwheel 311 used for manually opening and closing the valve body 1 do not affect the operation of the pneumatic device 7. Since the limiting protrusion 412 can only move up and down but not rotate inside the limiting groove 21, the valve stem 2 is therefore restricted to only slide up and down inside the first through hole 411 but cannot rotate. The valve stem 2 moves up and down under the drive of the threaded core 332 to open and close the valve body 1; the sealing ring 42 can abut against the outer peripheral surface of the valve stem 2 to form a seal. When liquid leaks from the valve body 1, the sealing ring 42 can prevent the liquid from flowing into the limiting bracket 41 to prevent the liquid from corroding the inside of the limiting bracket 41 so that the limiting bracket 41 cannot work normally; when the staff rotates the handwheel 311 to drive the bevel gear shaft 31 When the valve body 1 is opened and closed manually, if the pneumatic device 7 is in working state at this time, the output shaft of the pneumatic device 7 is fixed and cannot rotate, and the bevel gear shaft 31 cannot rotate due to the resistance of the bevel gear 32. At this time, the staff can turn off the pneumatic device 7 to make the pneumatic device 7 in a deflated state, and then drive the bevel gear 32 and the valve stem nut 33 by rotating the bevel gear shaft 31 to make the valve stem 2 move up and down to control the opening and closing of the valve body 1; the guide ring 522 can reduce the friction force on the output end of the pneumatic device 7 when it rotates, and can avoid the output end of the pneumatic device 7 from being offset; after the manual device has worked for a long time, the threads inside the threaded core 332 may no longer work normally due to a large degree of wear. At this time, the pneumatic device 7 and the sealing plate 52 can be disassembled, and the fixing bolts of the fixed limit bracket 41, the bottom plate 51 and the support frame 6 can be unscrewed, the support frame 6 can be removed and the valve stem nut 33 can be removed, and then the new threaded core 332 can be replaced and the device can be reassembled to ensure the long-term operation of the manual device.

[0035] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A valve side mounted manual device, characterized in that: The invention comprises a valve body (1), a valve stem (2), a transmission assembly, a limit assembly, a bracket, a support frame (6) and a pneumatic device (7), wherein the limit assembly is arranged at the top of the valve body (1) and is used to limit the rotation of the valve stem (2), the bracket is arranged at the top of the limit assembly, the valve stem (2) is respectively inserted into the valve body (1), the limit assembly and the bracket, the support frame (6) is sleeved on the bracket, the transmission assembly comprises a bevel gear shaft (31), a bevel gear (32) and a valve stem nut (33), and the valve stem nut (33) is provided with a plurality of bevel gears. The valve stem nut (33) is rotatably connected to the support frame (6); one end of the valve stem (2) is provided with a thread; the valve stem (2) is threadably connected to the valve stem nut (33); the bevel gear (32) is fixedly connected to the top of the valve stem nut (33); one end of the bevel gear shaft (31) passes through the support frame (6) and meshes with the bevel gear (32) for transmission; the pneumatic device (7) is arranged on the top of the bracket; the output end of the pneumatic device (7) passes through the bracket and the support frame (6) and is transmission-connected to the bevel gear (32).

2. A valve side mounted manual device according to claim 1, characterized in that: The limiting assembly comprises a limiting bracket (41), a first through hole (411) is provided inside the limiting bracket (41), a plurality of limiting protrusions (412) are provided on the inner wall of the first through hole (411), the valve stem (2) passes through the first through hole (411) and is slidably connected to the limiting bracket (41), a limiting groove (21) is provided on the outer peripheral surface of the valve stem (2), and the limiting protrusions (412) are slidably connected inside the limiting groove (21).

3. A valve side mounted manual device according to claim 2, characterized in that: The bottom of the limit bracket (41) is connected to the valve body (1) by means of fixing bolts. A first mounting groove (413) is provided at one end of the limit bracket (41) close to the valve body (1). A sealing ring (42) is provided inside the first mounting groove (413). The valve stem (2) passes through the sealing ring (42) and is slidably connected to the sealing ring (42). One side of the sealing ring (42) abuts against the top of the valve body (1).

4. A valve side mounted manual device according to any one of claims 1 to 3, characterized in that: A hand wheel (311) is provided at one end of the bevel gear shaft (31) away from the bevel gear (32); the valve stem nut (33) comprises a nut body (331) and a threaded core (332); one end of the nut body (331) is rotatably connected to the support frame (6); a second through hole (3311) is provided inside the nut body (331); a second mounting groove (3312) is also provided at the bottom of the nut body (331); the threaded core (332) is clamped inside the second mounting groove (3312); and one end of the valve stem (2) close to the bevel gear (32) is threadedly connected to the threaded core (332).

5. A valve side mounted manual device according to claim 4, characterized in that: The bracket comprises a base plate (51), a sealing plate (52) and a support column (53); the base plate (51) is arranged on the top of the limiting bracket (41); the support frame (6) is arranged on the top of the base plate (51); the limiting bracket (41), the base plate (51) and the support frame (6) are connected to each other via fixing bolts; one end of the support column (53) passes through the support frame (6) and is welded to the top of the base plate (51); the sealing plate (52) is arranged on one end of the support column (53) away from the base plate (51); the sealing plate (52) is connected to the support column (53) via fixing bolts; and the pneumatic device (7) is arranged on the top of the sealing plate (52).

6. A valve side mounted manual device according to claim 5, characterized in that: A third mounting groove (61) is provided at the top of the support frame (6), and a guide ring (522) is also provided at the top of the support frame (6). One end of the guide ring (522) is rotatably connected inside the third mounting groove (61), and the guide ring (522) is connected to the support frame (6) via a fixing bolt. The output end of the pneumatic device (7) passes through the guide ring (522) and is rotatably connected to the guide ring (522).

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