Manual-hydraulic device and butterfly valve

Abstract

The utility model discloses a manual-hydraulic device and a butterfly valve, and the manual-hydraulic device comprises a hydraulic support, a hydraulic cylinder and a hydraulic cylinder, the manual device is rotationally arranged on the other side of the hydraulic support, and the manual device comprises a movable pull rod; the safety fixing plate is arranged on the hydraulic support and used for locking the manual device when the manual device is not used; one end of the crank is rotationally arranged on the hydraulic support, and the other end of the crank is selectively and detachably connected with the pull rod or the hydraulic cylinder, so that the crank is driven by the manual device or the hydraulic cylinder to rotate. The device combines hydraulic operation and manual operation, and has the advantages of being compact in structure, large in power, easy and rapid to operate, low in manufacturing cost and high in market generalization.

Description

Technical Field

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

[0002] Butterfly valves are now widely used in metallurgy, chemical industry, energy and other fields. At present, the main driving form of butterfly valves is hydraulic drive. When the hydraulic system or hydraulic cylinder fails, the valve will not be able to open and close, which will affect the normal operation of the entire system. The traditional manual hydraulic device butterfly valve has defects such as large size and high cost. Utility Model Content

[0003] The purpose of the embodiment of the present application is to provide a hand hydraulic device, the hand hydraulic device comprising:

[0004] A hydraulic support with a hydraulic cylinder mounted on one side;

[0005] A manual device, which is rotatably arranged on the other side of the hydraulic support, and the manual device includes a movable pull rod;

[0006] A safety fixing plate, which is arranged on the hydraulic support and is used to lock the manual device when the manual device is not in use;

[0007] A crank, one end of which is rotatably mounted on the hydraulic support, and the other end of which is selectively detachably connected to the pull rod or the hydraulic cylinder, so that the crank can rotate under the drive of the manual device or the hydraulic cylinder.

[0008] As an optional embodiment, it also includes:

[0009] A fixed seat is arranged on the hydraulic support, and the fixed seat includes a bottom plate and two connecting plates arranged opposite to the bottom plate. The manual device is arranged in the fixed seat and is rotatably connected to the two connecting plates through connecting rods.

[0010] As an optional embodiment, the manual device further includes:

[0011] A housing, in which a worm wheel and a worm are meshed with each other, the pull rod passes through the housing along the length direction of the housing, the pull rod has a thread structure and meshes with the worm wheel, and the rotation of the worm wheel drives the pull rod to move linearly;

[0012] A handle, one end of which is located outside the shell, and the other end of which extends into the shell and is connected to the worm. The rotation of the handle drives the worm to rotate.

[0013] As an optional embodiment, a first fixing hole is formed on the safety fixing plate, and a second fixing hole is formed on the shell. Connecting bolts are provided in the first fixing hole and the second fixing hole to lock the manual device.

[0014] As an optional embodiment, the crank is provided with a plurality of first pin holes, the pull rod is provided with a second pin hole, and the power output end of the hydraulic cylinder is provided with a third pin hole. The first pin hole on the crank close to the manual device is connected to the second pin hole through a pin shaft to connect the crank to the manual device, and the first pin hole on the crank close to the hydraulic cylinder is connected to the third pin hole through a pin shaft to connect the crank to the hydraulic cylinder.

[0015] The purpose of an embodiment of the present application is also to provide a butterfly valve, including a butterfly valve body and a butterfly valve shaft, and also including a hand-hydraulic device as described above, wherein one end of the butterfly valve shaft extends out of the butterfly valve body and is rotatably connected to the hydraulic support, and the crank is connected to the butterfly valve shaft so that the butterfly valve shaft moves with the crank when the crank rotates.

[0016] As an optional embodiment, the butterfly valve body is a connecting rod butterfly valve, an eccentric butterfly valve, or a ventilation butterfly valve.

[0017] The beneficial effects of the embodiments of the present application are:

[0018] The present application is a device combining hydraulic and manual operation, which has the advantages of compact structure, strong power, simple and quick operation, low cost and high market versatility.

[0019] The present application can achieve driving through a manual device when the hydraulic cylinder cannot be driven. Through the selective connection of the crank, the butterfly valve shaft can be driven manually or hydraulically as needed, which increases the flexibility of operation and is easy to operate. The design of the safety fixing plate ensures that the manual device can be locked when not in use to prevent misoperation or accidental movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the hand hydraulic device of an embodiment of the present application;

[0021] Figure 2 A schematic diagram of the working state of the manual device of the hand hydraulic device of the embodiment of the present application;

[0022] Figure 3 A schematic diagram of the working state of the hydraulic cylinder of the hand hydraulic device of the embodiment of the present application;

[0023] Figure 4 For along Figure 3 AA's view;

[0024] Figure 5Schematic diagram of the structure of the butterfly valve device according to the embodiment of the present application.

[0025] Reference numerals:

[0026] 1. Butterfly valve; 2. Manual hydraulic device; 2.1. Hydraulic support; 2.2. Fixed seat; 2.3. Safety fixing plate; 2.4. Manual device; 2.5. Crank; 2.6. Second pin hole; 2.7. Third pin hole; 2.8. Hydraulic cylinder; 2.9. Handle; 2.10. Connecting rod; 2.11. Pull rod. DETAILED DESCRIPTION

[0027] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0028] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0029] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0030] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0031] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art will be able to readily implement many other equivalent forms of the present application.

[0032] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0033] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present application. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0034] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0035] The present application embodiment provides a hand hydraulic device 2, such as Figure 1-Figure 3 As shown, the hand hydraulic device 2 comprises a hydraulic support, a manual device 2.4, a safety fixing plate 2.3 and a crank 2.5. The hand hydraulic device 2 has a compact structure, occupies a small space and is light in weight.

[0036] A hydraulic cylinder 2.8 is installed on one side of the hydraulic support, and the manual device 2.4 is rotatably arranged on the other side of the hydraulic support. The manual device 2.4 includes a movable pull rod 2.11.

[0037] The safety fixing plate 2.3 is arranged on the hydraulic support and is used to lock the manual device 2.4 when the manual device 2.4 is not in use.

[0038] One end of the crank 2.5 is rotatably mounted on the hydraulic support, and the other end is selectively detachably connected to the pull rod 2.11 or the hydraulic cylinder 2.8, so that the crank 2.5 is driven by the manual device 2.4 or the hydraulic cylinder 2.8 to rotate.

[0039] The present application is a device combining hydraulic and manual operation, which can achieve driving through the manual device 2.4 when the hydraulic cylinder cannot be driven. Through the selective connection of the crank 2.5, the butterfly valve shaft can be driven manually or hydraulically as needed, which increases the flexibility of operation. The design of the safety fixing plate 2.3 ensures that the manual device 2.4 can be locked when not in use to prevent misoperation or accidental movement.

[0040] As an optional embodiment, Figure 1 and Figure 4 As shown, the manual hydraulic device 2 also includes a fixing seat 2.2 added on the hydraulic support for mounting a manual device 2.4. The fixing seat 2.2 has a simple structure, small processing volume, and low precision requirements.

[0041] The fixing seat 2.2 is arranged on the hydraulic support, and the fixing seat 2.2 comprises a bottom plate and two connecting plates arranged opposite to the bottom plate. The manual device 2.4 is arranged in the fixing seat 2.2 and is rotatably connected with the two connecting plates through connecting rods 2.10 respectively.

[0042] The manual device 2.4 can rotate around the connecting rod 2.10, and the opening and closing positions of the valve can be realized by adjusting the rotation angle of the manual device 2.4. The design of the fixing seat 2.2 enhances the stability of the manual device 2.4, and the connecting rod 2.10 is rotatably connected with the two connecting plates to provide a more stable operating platform.

[0043] As an optional embodiment, the manual device 2.4 also includes a housing and a handle 2.9. The manual device 2.4 is a two-stage torque amplification mechanism, the first stage adopts a worm gear and a worm amplification speed ratio transmission, and the second stage adopts a threaded labor-saving transmission. Shaking the handle 2.9 makes the threaded rod extend and retract, close and open the valve, ensure the normal operation of the system, and the valve operation is simple and labor-saving.

[0044] The housing is provided with a worm wheel and a worm that mesh with each other. The pull rod 2.11 penetrates the housing along the length direction of the housing. The pull rod 2.11 has a thread structure and meshes with the worm wheel. When the worm wheel rotates, the pull rod 2.11 moves linearly.

[0045] One end of the handle 2.9 is located outside the housing, and the other end extends into the housing and is connected to the worm. When the handle 2.9 rotates, the worm is driven to rotate.

[0046] The meshing design of the worm wheel and the worm achieves efficient power transmission. The meshing of the thread structure and the worm wheel enables the pull rod 2.11 to move in a straight line, improving the accuracy of the operation. The design of the handle 2.9 facilitates the operator to manually drive, increasing the convenience of operation.

[0047] As an optional embodiment, the safety fixing plate 2.3 is provided with a first fixing hole, the housing is provided with a second fixing hole, and the first fixing hole and the second fixing hole are provided with connecting bolts to lock the manual device 2.4. The manual device 2.4 is locked by the connecting bolts in the first fixing hole and the second fixing hole, thereby enhancing the safety of the device during use.

[0048] As an optional embodiment, the crank 2.5 is provided with a plurality of first pin holes, the pull rod 2.11 is provided with a second pin hole 2.6, the power output end of the hydraulic cylinder 2.8 is provided with a third pin hole 2.7, the first pin hole on the crank 2.5 close to the manual device 2.4 is connected to the second pin hole 2.6 through a pin shaft to connect the crank 2.5 with the manual device 2.4, and the first pin hole on the crank 2.5 close to the hydraulic cylinder 2.8 is connected to the third pin hole 2.7 through a pin shaft to connect the crank 2.5 with the hydraulic cylinder 2.8.

[0049] The first pin hole is selectively connected to the second pin hole 2.6 or the third pin hole 2.7 through a pin shaft, respectively. The connection is simple and reliable, so that the crank 2.5 can be flexibly connected to the manual device 2.4 or the hydraulic cylinder 2.8.

[0050] The manual device 2.4 and the hydraulic cylinder 2.8 have two states: non-working position and working position, and the two states can be switched. When the hydraulic drive works normally, the manual device 2.4 is in the non-working position. When the hydraulic drive fails, the manual device 2.4 is in the working position, and the valve is driven to open and close by the manual device 2.4.

[0051] When the hydraulic drive fails, the manual device 2.4 is used to work. First, the third pin hole 2.7 on the hydraulic cylinder 2.8 and the pin in the first pin hole on the crank 2.5 are removed, and the connecting bolts on the safety fixing plate 2.3 are loosened, so that the manual device 2.4 can rotate along the connecting rod 2.10.

[0052] The manual device 2.4 is rotated to adjust the use position of the manual device 2.4. At the same time, the handle 2.9 is shaken, and the handle 2.9 rotates to drive the pull rod 2.11 to move through the worm gear, so that the pull rod 2.11 is extended. When the pull rod 2.11 is extended to a suitable position, the pin is installed in the second pin hole 2.6 of the pull rod 2.11 and the corresponding first pin hole on the crank 2.5, so that the crank 2.5 is connected to the pull rod 2.11.

[0053] Continue to shake the handle 2.9 to move the pull rod 2.11, thereby driving the crank 2.5 to rotate. When the device is applied to a valve, the rotation of the crank 2.5 can drive the valve plate to rotate through the rotating shaft to achieve the valve closing and opening switching, which is the work of the manual device 2.4.

[0054] When the hydraulic drive returns to normal, the pin shaft in the second pin hole 2.6 and the corresponding first pin hole is removed to separate the manual device 2.4 from the crank 2.5; and the third pin hole 2.7 and the corresponding first pin hole are connected through the pin shaft to connect the hydraulic cylinder 2.8 to the crank 2.5.

[0055] After removing the pin shaft in the second pin hole 2.6 and the corresponding first pin hole, shake the handle 2.9 in the opposite direction, retract the pull rod 2.11 and rotate the manual device 2.4 to rotate it to the safety fixing plate 2.3 and fix it there, and return to the working position of the hydraulic device. In this way, the overall structure can be made compact, and the manual device 2.4 can be fixed by the safety fixing plate 2.3 to prevent vibration.

[0056] The present application also provides a butterfly valve 1, such as Figure 5 As shown, the butterfly valve 1 includes a butterfly valve body and a butterfly valve shaft, and also includes the aforementioned manual hydraulic device 2. The manual hydraulic device 2 is applied to the butterfly valve 1 to achieve flexible control of the butterfly valve 1, and both opening and closing can be completed by manual or hydraulic drive, thereby improving the applicability and convenience of operation of the butterfly valve 1.

[0057] One end of the butterfly valve shaft extending from the butterfly valve body is rotatably connected to the hydraulic support, and the crank 2.5 is connected to the butterfly valve shaft so that the butterfly valve shaft moves with the crank 2.5 when it rotates.

[0058] The butterfly valve shaft is connected to the butterfly valve body, and the rotation of the crank 2.5 drives the butterfly valve shaft to control the opening of the butterfly valve to adjust or cut off the flow. The butterfly valve body is a connecting rod butterfly valve, an eccentric butterfly valve or a ventilation butterfly valve, which provides a wide range of adaptability and application.

[0059] The butterfly valve 1 is installed on the pipeline, and the driving device drives the main shaft to rotate, open or close the valve, and achieve the function of cutting off or regulating the medium. For the hydraulically driven butterfly valve 1, when the hydraulic power source fails, the valve cannot meet the corresponding requirements. The manual device 2.4 of this application can realize the normal opening and closing of the valve to ensure the normal operation of the system.

[0060] If the hydraulic cylinder 2.8 is needed for driving, the operator connects the crank 2.5 with the power output end of the hydraulic cylinder 2.8 through a pin. The hydraulic cylinder 2.8 works, pushing the crank 2.5 to rotate, thereby driving the butterfly valve shaft to achieve rapid opening or closing of the butterfly valve 1. At this time, the manual device 2.4 is not used, and the safety fixing plate 2.3 locks the manual device 2.4 to prevent misoperation.

[0061] When the hydraulic cylinder 2.8 fails and the manual device 2.4 needs to be used, the hydraulic cylinder 2.8 is separated from the crank 2.5 first, and the operator releases the lock of the manual device 2.4 by the safety fixing plate 2.3, rotates the manual device 2.4, and uses the second pin hole 2.6 on the pull rod 2.11 to correspond to the first pin hole on the crank 2.5, and then connects the pull rod 2.11 and the crank 2.5 together through the pin shaft.

[0062] The operator rotates the handle 2.9, which is connected to the worm. The rotation of the worm drives the worm wheel to rotate. Since the worm wheel is engaged with the threaded structure on the pull rod 2.11, the rotation of the worm wheel drives the pull rod 2.11 to move linearly. The manual operation force is transmitted through the crank 2.5 to realize the rotation of the butterfly valve shaft, thereby controlling the opening or closing of the butterfly valve 1.

[0063] After the manual device 2.4 is operated, the operator can re-lock the manual device 2.4 on the safety fixing plate 2.3 to ensure that the manual device 2.4 remains fixed when not in use. The entire working process shows how the manual hydraulic device 2 can control the butterfly valve 1 through manual or hydraulic drive while ensuring the safety and flexibility of operation.

[0064] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A hand hydraulic device, characterized in that: include: A hydraulic support with a hydraulic cylinder mounted on one side; A manual device, which is rotatably arranged on the other side of the hydraulic support, and the manual device includes a movable pull rod; A safety fixing plate, which is arranged on the hydraulic support and is used to lock the manual device when the manual device is not in use; A crank, one end of which is rotatably mounted on the hydraulic support, and the other end of which is selectively detachably connected to the pull rod or the hydraulic cylinder, so that the crank can rotate under the drive of the manual device or the hydraulic cylinder.

2. A hand hydraulic device as claimed in claim 1, characterized in that: Also includes: A fixed seat is arranged on the hydraulic support, and the fixed seat includes a bottom plate and two connecting plates arranged opposite to the bottom plate. The manual device is arranged in the fixed seat and is rotatably connected to the two connecting plates through connecting rods.

3. A hand hydraulic device as claimed in claim 1, characterized in that: The manual device also includes: A housing, in which a worm wheel and a worm are meshed with each other, the pull rod passes through the housing along the length direction of the housing, the pull rod has a thread structure and meshes with the worm wheel, and the rotation of the worm wheel drives the pull rod to move linearly; A handle, one end of which is located outside the shell, and the other end of which extends into the shell and is connected to the worm. The rotation of the handle drives the worm to rotate.

4. A hand hydraulic device as claimed in claim 3, characterized in that: The safety fixing plate is provided with a first fixing hole, the shell is provided with a second fixing hole, and connecting bolts are arranged in the first fixing hole and the second fixing hole to lock the manual device.

5. A hand hydraulic device as claimed in claim 1, characterized in that: The crank is provided with a plurality of first pin holes, the pull rod is provided with a second pin hole, and the power output end of the hydraulic cylinder is provided with a third pin hole. The first pin hole on the crank close to the manual device is connected to the second pin hole through a pin shaft to connect the crank to the manual device, and the first pin hole on the crank close to the hydraulic cylinder is connected to the third pin hole through a pin shaft to connect the crank to the hydraulic cylinder.

6. A butterfly valve, comprising a butterfly valve body and a butterfly valve shaft, characterized in that: It also includes a hand hydraulic device as described in any one of claims 1-5, wherein the butterfly valve shaft extends out of one end of the butterfly valve body and is rotatably connected to the hydraulic support, and the crank is connected to the butterfly valve shaft so that the butterfly valve shaft moves with the crank when the crank rotates.

7. A butterfly valve according to claim 6, characterized in that: The butterfly valve body is a connecting rod butterfly valve, an eccentric butterfly valve or a ventilation butterfly valve.

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