Shock-resistant butterfly valve

Abstract

The invention discloses an anti-vibration butterfly valve. The anti-vibration butterfly valve comprises a valve body, a valve handle and a vibration swing component. Wherein the first end of the valve handle is connected with the valve body, and the second end of the valve handle is detachably connected with the vibration swing component in a lap joint mode, so that when the vibration swing component senses vibration, the valve handle is separated from the vibration swing component and rotates, and therefore the butterfly valve is closed. According to the scheme, rapid and automatic closing can be achieved under the condition that an earthquake occurs and unattended operation or power failure occurs, so that the probability of secondary disasters is reduced, and the butterfly valve is low in manufacturing cost, convenient to install, high in universality and capable of bringing good disaster prevention and reduction, environmental protection and economic benefits.

Description

Technical Field

[0001] The present application relates to the technical field of valve equipment, and in particular to a seismic-resistant butterfly valve. Background Art

[0002] As an important control device in industrial production, the opening, closing and regulating functions of butterfly valves are crucial to industrial facilities.

[0003] In actual applications, almost all industrial facilities are affected by natural disasters such as earthquakes. Buildings, equipment and even the ground may be shaken, and pipelines may be damaged, leading to water leakage, air leakage and other problems. If the butterfly valve fails in an earthquake, it may cause fluid leakage in the pipeline, and even cause serious accidents such as fire and explosion.

[0004] Therefore, how to design a butterfly valve that can close quickly and automatically during an earthquake has become a problem that needs to be solved in the art. Summary of the invention

[0005] In view of this, the present application proposes a seismic-resistant butterfly valve, which comprises: a valve body, a valve handle and a seismic pendulum component; wherein:

[0006] The first end of the valve handle is connected to the valve body, and the second end of the valve handle is detachably connected to the pendulum member. When the pendulum member senses vibration, the valve handle is detached from the pendulum member and rotates, thereby closing the valve body.

[0007] Preferably, the vibrating and pendulum component comprises: a first support rod, a spring, a vibrating and pendulum assembly, and a vibrating and pendulum follower assembly;

[0008] The first end of the first support rod and the first end of the valve handle are coaxially fixed in the valve body, and the first end of the valve handle is rotatably fixed in the valve body, and the second end of the first support rod and the second end of the valve handle are connected through the spring;

[0009] The vibrating pendulum assembly is suspended below the secondary vibrating assembly;

[0010] When the butterfly valve is in an open state, the follower assembly is buckled and fixed to the valve handle, the second end of the valve handle is located at the first side, and the spring is in a stretched state;

[0011] When the butterfly valve is in a closed state, the valve handle is separated from the vibration slave assembly, the second end of the valve handle is located at the second side, and the spring is in a contracted state.

[0012] More preferably,

[0013] The oscillating assembly comprises: a oscillating ball and a oscillating rod connected to the oscillating ball;

[0014] The follower assembly comprises: a follower rod, a hook arm and a second support rod, one end of the second support rod is fixed in the valve body, the other end is provided with the follower rod and the hook arm, and the follower rod is fixedly connected to the vibration swing rod;

[0015] The valve handle comprises: a valve handle body and a fastener with a hook structure, wherein the fastener is fixed in the valve handle body;

[0016] When the butterfly valve is in an open state, the bottom of the hook structure of the fastener is fastened and fixed to the hook arm under the action of the driven rod;

[0017] When the butterfly valve is in a closed state, the bottom of the hook structure of the fastener is separated from the hook arm under the action of the driven rod.

[0018] Further preferably, the follower assembly further comprises: a follower ball, a support tray and a wedge-shaped frame;

[0019] One end of the wedge-shaped frame is fixed in the second support rod, and the other end is provided with the support tray;

[0020] The driven ball is placed in the support tray, and the driven ball is respectively connected to the driven rod and the sway rod, so that the driven rod is fixedly connected to the sway rod through the driven ball.

[0021] Further preferably, the angles between the two oblique sides of the wedge-shaped frame and the corresponding horizontal direction or vertical direction are not less than 30°.

[0022] Further preferably, the valve handle further includes a hinge shaft;

[0023] The fastener is fixed in the valve handle body through the hinge shaft.

[0024] Further preferably, the valve body comprises: a valve plate and a valve stem;

[0025] The top of the valve stem is connected to the first end of the valve handle, and the bottom is inserted into the valve plate, so that when the second end of the valve handle swings, the first end of the valve handle rotates, driving the valve stem to rotate and driving the valve plate to rotate.

[0026] Further preferably, the valve body further comprises: a valve stem sleeve;

[0027] The valve stem shaft sleeve is sleeved on the outer side of the valve stem.

[0028] Further preferably, the valve body further comprises: a bracket support;

[0029] The first support rod and the second support rod are both fixed on the bracket, and the bracket is fixed on the valve body through the valve stem sleeve support.

[0030] Further preferably, the driven rod is perpendicular to the sway rod.

[0031] The earthquake-resistant butterfly valve provided in the present application includes a valve handle for controlling the opening and closing state of the valve body, and a pendulum component for sensing vibrations and detachably connected to the valve handle. When an earthquake occurs, the pendulum component shakes, causing the valve handle to detach from the pendulum component and rotate, thereby closing the valve body. In the event of an earthquake and no one is on duty or the power is off, the valve can be quickly and automatically closed to reduce the probability of secondary disasters. The butterfly valve in the present application has low manufacturing cost, easy installation, and strong universality, and can bring good disaster prevention and mitigation, environmental protection and economic benefits.

[0032] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic implementation modes and descriptions of the present application are used to explain the present application. In the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the structure of a seismic-resistant butterfly valve in an open state viewed from above according to a preferred embodiment of the present application;

[0035] Figure 2 This is a schematic diagram of the structure of the anti-seismic butterfly valve in the closed state when viewed from above according to the preferred embodiment of the present application.

[0036] Figure 3 This is a schematic structural diagram of a head-up anti-seismic butterfly valve in an open state according to a preferred embodiment of the present application;

[0037] Figure 4 This is a schematic diagram of the structure of the anti-seismic butterfly valve in the closed state according to the preferred embodiment of the present application.

[0038] Figure 5 This is a schematic diagram of the structure of the vibrating and pendulum assembly in the open state according to the preferred embodiment of the present application;

[0039] Figure 6 This is a schematic diagram of the structure of the pendulum assembly in a closed state according to a preferred embodiment of the present application when viewed from the horizontal direction.

[0040] Figure Number:

[0041] 1-valve body; 11-valve plate; 12-valve stem; 13-valve stem sleeve; 14-bracket support;

[0042] 2-valve handle; 21-fastener; 211-hook structure; 22-valve handle body; 23-hinge shaft;

[0043] 31-first support rod; 32-spring; 33-vibration and swing assembly; 331-vibration and swing ball; 332-vibration and swing rod; 34-follower assembly; 341-follower rod; 342-hook arm; 343 second support rod; 344-follower ball; 345-support tray; 346-wedge frame. DETAILED DESCRIPTION

[0044] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with the implementation modes.

[0045] The butterfly valve is a type of throttle valve and plays an important role in the water and gas pipeline system. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening, closing or regulating.

[0046] Based on this, the present application provides a seismic-resistant butterfly valve, such as Figure 1-6 As shown, the structure of the anti-seismic butterfly valve in the open state is as follows Figure 1 , 3 , 5, and the structure in the closed state is shown in 2, 4, and 6. The butterfly valve comprises: a valve body 1, a valve handle 2, and a vibrating pendulum component. The valve handle 2 is used to close or open the valve body 1, and the vibrating pendulum component is used to sense earthquake vibrations. The first end of the valve handle 2 is connected to the valve body 1, and the second end of the valve handle 2 is connected to the vibrating pendulum component in a detachable overlap, so that when the vibrating pendulum component senses vibration, the valve handle 2 can be separated from the vibrating pendulum component and rotate, and the valve body 1 is closed after rotation.

[0047] Specifically, the vibration pendulum component includes: a first support rod 31, a spring 32, a vibration pendulum assembly 33 and a slave vibration assembly 34. Among them, the first end of the first support rod 31 and the first end of the valve handle 2 are coaxially fixed in the valve body 1, and the first end of the valve handle 2 is rotatably fixed in the valve body 1. When the first support rod 31 rotates with the first end as the axis, the valve body 1 can be opened or closed. At the same time, the second end of the first support rod 31 and the second end of the valve handle 2 are connected through the spring 32, and the second end is in the opposite direction to the first end. Since the valve handle 2 is rotatable, when the spring 32 connected to the second end of the valve handle 2 contracts, the first end of the valve handle 2 can be driven to rotate and the second end to swing. The vibration pendulum assembly 33 is suspended below the slave vibration assembly 34. When the vibration pendulum assembly 33 feels the vibration, it drives the slave vibration assembly 34 to shake together. .

[0048] That is, when the butterfly valve is in the open state, the follower assembly 34 is buckled and fixed to the valve handle 2, the second end of the valve handle 2 is located at the first side, the second end of the first support rod 31 is located at the second side, and the spring 32 is in a stretched state. When the butterfly valve is in the closed state, the valve handle 2 is separated from the follower assembly 34, the second end of the valve handle 2 is located at the second side, that is, on the same side as the second end of the first support rod 31, and the spring 32 is in a contracted state.

[0049] When an earthquake occurs, the pendulum assembly 33 swings and drives the slave assembly 34 to swing, causing the valve handle 2 to separate from the slave assembly 34, and the second end of the valve handle 2 swings from the first side to the second side under the action of the contraction force of the spring 32, so that the butterfly valve automatically changes to a closed state without manual closure.

[0050] To be more specific, with respect to the specific structures of the pendulum assembly 33, the follower assembly 34 and the valve handle 2, the pendulum assembly 33 in the present application includes: a pendulum ball 331 and a pendulum rod 332; the follower assembly 34 includes: a driven rod 341, a hook arm 342 and a second support rod 343; the valve handle 2 includes: a valve handle body 22 and a fastener 21 with a hook structure 211, and the fastener 21 is fixed in the valve handle body 22.

[0051] One end of the swing rod 332 is connected to the swing ball 331, and the other end is connected to the driven rod 341, so that the swing ball 331 is suspended under the driven rod 341. One end of the second support rod 343 is fixed in the valve body 1, and the other end is provided with the driven rod 341 and the hook arm 342.

[0052] When the butterfly valve is in the open state, the bottom of the hook structure 211 of the fastener 21 is fixedly engaged with the hook arm 342 under the force of the driven rod 341, so that the second end of the valve handle 2 remains at the first side. When the butterfly valve is in the closed state, the positional relationship between the bottom of the hook structure 211 of the fastener 21 and the driven rod 341 changes, and the force of the driven rod 341 on the hook structure 211 also changes, so that the hook arm 342 is separated under the force of the driven rod 341.

[0053] When an earthquake occurs, the oscillating ball 331 swings, driving the driven rod 341 to swing, causing the hook structure 211 to separate from the hook arm 342 , so that the second end of the valve handle 2 swings to the second side under the action of the spring 32 .

[0054] In a preferred embodiment, the length of the rocker arm 332 is 5 times or more than the length of the driven rod 341 , which is beneficial for the driven rod 341 to generate a larger torque when the rocker arm 332 swings, thereby tilting the hook structure 211 .

[0055] Regarding the specific connection method between the vibrating assembly 33 and the follower assembly 34, the follower assembly 34 in the present application further includes: a follower ball 344, a support tray 345 and a wedge frame 346. The wedge frame 346 is a structure having two oblique sides and a bottom side, and the two oblique sides form a protruding sharp angle. The bottom side of the wedge frame 346 is fixed in the second support rod 343, and the support tray 345 is provided at the sharp angle end. The follower ball 344 is placed in the support tray 345. The follower ball 344 is respectively connected to the follower rod 341 and the vibrating rod 332, so that the follower rod 341 is fixedly connected to the vibrating rod 332 through the follower ball 344.

[0056] In a preferred embodiment, a supporting hole is opened on the support tray 345, and the diameter of the hole of the supporting hole needs to allow the vibration rod 332 to pass through, and the diameter of the hole of the supporting hole is smaller than the diameter of the driven ball 344, so that there is a certain swing gap between the vibration rod 332 and the hole, and the hole can support the shaking driven ball 344.

[0057] In another preferred embodiment, the angles between the two oblique sides of the wedge-shaped frame 346 and the corresponding horizontal direction or vertical direction are not less than 30°, ensuring that the driven rod 341 and the vibration rod 332 have sufficient swing space.

[0058] Regarding the fixing method of the fastener 21 and the valve handle body 22 , the valve handle 2 in the present application further includes a hinge shaft 23 , and the fastener 21 is rotatably fixed in the valve handle body 22 via the hinge shaft 23 .

[0059] Regarding the opening and closing mode of the butterfly valve itself, the valve body 1 in the present application includes: a valve plate 11, a valve stem 12, a valve stem sleeve 13 and a bracket support 14. Among them, the top of the valve stem 12 is connected to the first end of the valve handle 2, and the bottom is inserted into the valve plate 11. When the valve stem 12 rotates, the valve plate 11 also rotates. The valve stem sleeve 13 is sleeved on the outside of the valve stem 12, and the first support rod 31 and the second support rod 343 are both fixed on the bracket support 14, and the bracket support 14 is supported and fixed on the valve body 1 through the valve stem sleeve 13, so that the first support rod 31 and the second support rod 343 can be fixed on the valve body 1 through the bracket support 14 and the valve stem sleeve 13. When the second end of the valve handle 2 swings, the first end of the valve handle 2 rotates, driving the valve stem 12 to rotate and driving the valve plate 11 to rotate, so as to realize the opening or closing of the butterfly valve.

[0060] In a preferred embodiment, when the butterfly valve is in an open state, the valve handle 2 is parallel to the first support rod 31 , and when the butterfly valve is in a closed state, the valve handle 2 is parallel to the second support rod 343 .

[0061] In another preferred embodiment, the driven rod 341 is perpendicular to the rocking rod 332 , that is, the angle between the driven rod 341 and the rocking rod 332 is fixed at 90°.

[0062] The earthquake-resistant butterfly valve provided in the present application includes a valve handle for controlling the opening and closing state of the valve body, and a pendulum component for sensing vibrations and detachably connected to the valve handle. When an earthquake occurs, the pendulum component shakes, causing the valve handle to detach from the pendulum component and rotate, thereby closing the valve body. In the event of an earthquake and no one is on duty or the power is off, the valve can be quickly and automatically closed to reduce the probability of secondary disasters. The butterfly valve in the present application has low manufacturing cost, easy installation, and strong universality, and can bring good disaster prevention and mitigation, environmental protection and economic benefits.

[0063] The preferred embodiments of the present application are described in detail above; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0064] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0065] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A seismic-resistant butterfly valve, characterized in that: The butterfly valve comprises: a valve body (1), a valve handle (2) and a vibrating member; wherein: The first end of the valve handle (2) is connected to the valve body (1), and the second end of the valve handle (2) is detachably connected to the pendulum member. When the pendulum member senses vibration, the valve handle (2) is detached from the pendulum member and rotates, thereby closing the valve body (1).

2. The butterfly valve according to claim 1, characterized in that: The vibrating and pendulum component comprises: a first support rod (31), a spring (32), a vibrating and pendulum assembly (33), and a secondary vibrating assembly (34); The first end of the first support rod (31) and the first end of the valve handle (2) are coaxially fixed in the valve body (1), and the first end of the valve handle (2) is rotatably fixed in the valve body (1), and the second end of the first support rod (31) and the second end of the valve handle (2) are connected via the spring (32); The vibrating pendulum assembly (33) is suspended below the secondary vibrating assembly (34); When the butterfly valve is in an open state, the follower assembly (34) is buckled and fixed to the valve handle (2), the second end of the valve handle (2) is located on the first side, and the spring (32) is in a stretched state; When the butterfly valve is in a closed state, the valve handle (2) is separated from the vibration slave assembly (34), the second end of the valve handle (2) is located on the second side, and the spring (32) is in a contracted state.

3. The butterfly valve according to claim 2, characterized in that: The oscillating assembly (33) comprises: a oscillating ball (331) and a oscillating rod (332) connected to the oscillating ball (331); The follower assembly (34) comprises: a follower rod (341), a hook arm (342) and a second support rod (344); one end of the second support rod (344) is fixed in the valve body (1), and the other end is provided with the follower rod (341) and the hook arm (342); and the follower rod (341) is fixedly connected to the vibration swing rod (332); The valve handle (2) comprises: a valve handle body (22) and a fastener (21) having a hook structure (211), wherein the fastener (21) is fixed in the valve handle body (22); When the butterfly valve is in an open state, the bottom of the hook structure (211) of the fastener (21) is locked and fixed to the hook arm (342) under the action of the driven rod (341); When the butterfly valve is in a closed state, the bottom of the hook structure (211) of the fastener (21) is separated from the hook arm (342) under the action of the driven rod (341).

4. The butterfly valve according to claim 3, characterized in that: The seismic follower assembly (34) further comprises: a driven ball (343), a support tray (344) and a wedge-shaped frame (345); One end of the wedge-shaped frame (345) is fixed in the second support rod (344), and the other end is provided with the support tray (344); The driven ball (343) is placed in the support tray (344), and the driven ball (344) is respectively connected to the driven rod (341) and the oscillating rod (332), so that the driven rod (341) is fixedly connected to the oscillating rod (332) through the driven ball (343).

5. The butterfly valve according to claim 4, characterized in that: The included angles between the two oblique sides of the wedge-shaped frame (345) and the corresponding horizontal direction or vertical direction are not less than 30°.

6. The butterfly valve according to claim 3, characterized in that: The valve handle (2) further comprises a hinge shaft (23); The fastener (21) is fixed in the valve handle body (22) via the hinge shaft (23).

7. The butterfly valve according to claim 3, characterized in that: The valve body (1) comprises: a valve plate (11) and a valve stem (12); The top of the valve stem (12) is connected to the first end of the valve handle (2), and the bottom is inserted into the valve plate (11), so that when the second end of the valve handle (2) swings, the first end of the valve handle (2) rotates, driving the valve stem (12) to rotate and driving the valve plate (11) to rotate.

8. The butterfly valve according to claim 7, characterized in that: The valve body (1) further comprises: a valve stem sleeve (13); The valve stem shaft sleeve (13) is sleeved on the outside of the valve stem (12).

9. The butterfly valve according to claim 8, characterized in that: The valve body (1) further comprises: a bracket support (14); The first support rod (31) and the second support rod (344) are both fixed on a support bracket (14), and the support bracket (14) is supported and fixed on the valve body (1) through a valve stem shaft sleeve (13).

10. The butterfly valve according to claim 3, characterized in that: The driven rod (341) is perpendicular to the sway rod (332).

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