Pneumatic butterfly valve with external protection device

Abstract

The utility model relates to the technical field of pneumatic butterfly valves, in particular to a pneumatic butterfly valve with an external protection device, which comprises a pneumatic butterfly valve body, a high platform is integrally formed at the top end of the middle of the pneumatic butterfly valve body, and a pneumatic actuator is arranged at the upper end of the high platform. An output shaft of the pneumatic actuator is in transmission connection with a valve plate in the pneumatic butterfly valve body; a protective cover is movably installed outside the pneumatic actuator, and a bottom ring is annularly arranged outside the lower end of the high platform. The protective cover is movably installed outside the pneumatic actuator, when the protective cover is impacted by a falling object at the upper end, the protective cover drives the movable sleeve to slide and descend along the high platform and compresses the spring, meanwhile, the friction sleeve is arranged on the inner wall of the movable sleeve, the end face of the inner wall of the friction sleeve is in friction connection with the end face of the outer wall of the high platform, and resistance is generated by friction. And after being matched with a spring, the damping and buffering purposes can be achieved, and then the pneumatic actuator can be protected.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic butterfly valves, in particular to a pneumatic butterfly valve with an external protective device. Background Art

[0002] A pneumatic butterfly valve is a valve used for fluid control. Its main function is to regulate or cut off the flow of fluid. It uses a butterfly-shaped valve plate to achieve the opening and closing action. This valve plate is installed in the valve body. The pneumatic device drives the rotation of the valve plate through air pressure or a pneumatic cylinder.

[0003] At present, the actuator of the existing pneumatic butterfly valves on the market is usually set at the upper end of the butterfly valve. If the butterfly valve is used in an outdoor environment, the actuator is exposed to the outside and is easily damaged by falling objects from high altitude, thereby causing the butterfly valve to malfunction. Utility Model Content

[0004] The purpose of the present utility model is to provide a pneumatic butterfly valve with an external protection device to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A pneumatic butterfly valve with an external protection device, comprising

[0007] A pneumatic butterfly valve body, wherein a platform is integrally formed at the top of the middle portion of the pneumatic butterfly valve body, a pneumatic actuator is provided at the upper end of the platform, and an output shaft of the pneumatic actuator is drivingly connected to a valve plate inside the pneumatic butterfly valve body;

[0008] A protective cover is movably installed on the outside of the pneumatic actuator, a bottom ring is annularly arranged on the outside of the lower end of the platform, and a shock absorbing mechanism is arranged between the bottom ring and the protective cover located outside the platform.

[0009] Preferably, the shock absorbing mechanism includes a movable sleeve, which is arranged at the middle of the bottom end of the protective cover and is movably connected to the platform, and a spring is arranged between the movable sleeve and the bottom ring located outside the platform;

[0010] Preferably, a friction sleeve is further provided on the inner wall of the movable sleeve, and the inner wall of the friction sleeve is frictionally connected to the outer wall of the platform;

[0011] Preferably, guide grooves are penetrated and opened on both sides of the protective cover, and air pipes are connected to both ends of the pneumatic actuator, and the air pipes are slidably connected to the guide grooves;

[0012] Preferably, the outer side of the trachea is connected to an elbow via a first rotary joint, and the other end of the elbow is provided with a second rotary joint;

[0013] Preferably, a protective plate is detachably provided on the top of the protective cover.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. A pneumatic butterfly valve with an external protective device. A protective cover is movably installed on the outside of the pneumatic actuator. When the protective cover is hit by a falling object from the upper end, the protective cover drives the movable sleeve to slide down along the platform and compress the spring. At the same time, since a friction sleeve is provided on the inner wall of the movable sleeve, the inner wall end face of the friction sleeve is frictionally connected with the outer wall end face of the platform, and the friction generates resistance. When combined with the spring, it can achieve the purpose of shock absorption and buffering, thereby protecting the pneumatic actuator.

[0016] 2. This is a pneumatic butterfly valve with an external protective device. The device is provided with a rotary joint 1 on the outside of the trachea, an elbow is provided on the outside of the rotary joint 1, and a rotary joint 2 is provided at the end of the elbow. In this way, the rotary joint 1 can rotate along the radial direction of the trachea, and the rotary joint 2 can rotate along the radial direction of the elbow. In this way, the angle of the rotary joint 2 can be adjusted according to the installation requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the protective cover of the present utility model;

[0019] Figure 3 For the utility model Figure 1 A in the middle is an enlarged schematic diagram;

[0020] Figure 4 For the utility model Figure 2 Enlarged schematic diagram of point B in the middle.

[0021] In the figure: 1. Pneumatic butterfly valve body; 2. Platform; 3. Pneumatic actuator; 4. Protective cover; 5. Bottom ring; 6. Movable sleeve; 7. Spring; 8. Friction sleeve; 9. Guide groove; 10. Air pipe; 11. Rotary joint 1; 12. Elbow; 13. Rotary joint 2; 14. Protective plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figure 1-4 As shown, the utility model provides a technical solution:

[0024] A pneumatic butterfly valve with an external protective device, comprising a pneumatic butterfly valve body 1, a platform 2 integrally formed at the top middle portion of the pneumatic butterfly valve body 1, a pneumatic actuator 3 provided at the upper end of the platform 2, and an output shaft of the pneumatic actuator 3 being transmission-connected to a valve plate inside the pneumatic butterfly valve body 1; a protective cover 4 movably mounted on the outside of the pneumatic actuator 3, a protective plate 14 detachably provided on the top end of the protective cover 4, a bottom ring 5 annularly arranged on the outside of the lower end of the platform 2, a shock-absorbing mechanism being provided between the bottom ring 5 and the protective cover 4 located outside the platform 2; the shock-absorbing mechanism comprising a movable sleeve 6, the movable sleeve 6 being provided at the middle portion of the bottom end of the protective cover 4 and movably connected to the platform 2, a spring 7 being provided between the movable sleeve 6 and the bottom ring 5 located outside the platform 2; a friction sleeve 8 being further provided at the inner wall of the movable sleeve 6, the inner wall of the friction sleeve 8 being frictionally connected to the outer wall of the platform 2;

[0025] In this embodiment, the device has a protective cover 4 movably installed on the outside of the pneumatic actuator 3. When the protective cover 4 is hit by a falling object from the upper end, the protective cover 4 drives the movable sleeve 6 to slide down along the platform 2 and compress the spring 7. At the same time, since the inner wall of the movable sleeve 6 is provided with a friction sleeve 8, the inner wall end face of the friction sleeve 8 is frictionally connected with the outer wall end face of the platform 2, and the friction generates resistance. When combined with the spring 7, the purpose of shock absorption and buffering can be achieved, thereby protecting the pneumatic actuator 3.

[0026] like Figure 3 As shown, guide grooves 9 are penetrated on both sides of the protective cover 4, and air pipes 10 are connected to both ends of the pneumatic actuator 3. The air pipes 10 are slidably connected to the guide grooves 9; the outer side of the air pipe 10 is connected to an elbow 12 through a rotary joint 11, and the other end of the elbow 12 is provided with a rotary joint 2 13;

[0027] In this embodiment, since the trachea 10 needs to be connected to an external pipeline, and the device is provided with a rotary joint 11 on the outside of the trachea 10, an elbow 12 is provided on the outside of the rotary joint 11, and a rotary joint 2 13 is provided at the end of the elbow 12, so that the rotary joint 11 can rotate along the radial direction of the trachea 10, and the rotary joint 2 13 can rotate along the radial direction of the elbow 12, so that the angle of the rotary joint 2 13 can be adjusted according to the installation requirements.

[0028] Working principle: This device has a protective cover 4 installed on the outside of the pneumatic actuator 3. When the protective cover 4 is hit by a falling object from the upper end, the protective cover 4 drives the movable sleeve 6 to slide down along the platform 2 and compress the spring 7. At the same time, since the inner wall of the movable sleeve 6 is provided with a friction sleeve 8, the inner wall end face of the friction sleeve 8 is frictionally connected with the outer wall end face of the platform 2, and the friction generates resistance, which can achieve the purpose of shock absorption and buffering when combined with the spring 7. Since the air pipe 10 needs to be connected to the external pipeline, and this device has a rotary joint 11 on the outside of the air pipe 10, an elbow 12 is provided on the outside of the rotary joint 11, and a rotary joint 2 13 is provided at the end of the elbow 12, so that the rotary joint 11 can rotate along the radial direction of the air pipe 10, and the rotary joint 2 13 can rotate along the radial direction of the elbow 12.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic butterfly valve with an external protection device, characterized in that: It comprises a pneumatic butterfly valve body (1), a platform (2) is integrally formed at the top of the middle part of the pneumatic butterfly valve body (1), a pneumatic actuator (3) is arranged at the upper end of the platform (2), and the output shaft of the pneumatic actuator (3) is drivingly connected to the valve plate inside the pneumatic butterfly valve body (1); A protective cover (4) is movably installed outside the pneumatic actuator (3), a bottom ring (5) is annularly arranged outside the lower end of the platform (2), and a shock-absorbing mechanism is arranged between the bottom ring (5) and the protective cover (4) located outside the platform (2).

2. A pneumatic butterfly valve with an external protection device according to claim 1, characterized in that: The shock absorbing mechanism includes a movable sleeve (6), which is arranged at the middle of the bottom end of the protective cover (4) and is movably connected to the platform (2), and a spring (7) is arranged between the movable sleeve (6) and the bottom ring (5) located outside the platform (2).

3. The pneumatic butterfly valve with an external protection device according to claim 2, characterized in that: A friction sleeve (8) is further provided on the inner wall of the movable sleeve (6), and the inner wall of the friction sleeve (8) is frictionally connected to the outer wall of the platform (2).

4. The pneumatic butterfly valve with an external protection device according to claim 2, characterized in that: Guide grooves (9) are penetrated and opened on both sides of the protective cover (4), and air pipes (10) are connected to both ends of the pneumatic actuator (3), and the air pipes (10) are slidably connected to the guide grooves (9).

5. The pneumatic butterfly valve with an external protection device according to claim 4, characterized in that: The outer side of the air pipe (10) is connected to an elbow (12) via a first rotary joint (11), and a second rotary joint (13) is provided at the other end of the elbow (12).

6. The pneumatic butterfly valve with an external protection device according to claim 1, characterized in that: A protective plate (14) is detachably provided on the top end of the protective cover (4).

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