A sealed, wear-resistant pneumatic quick-opening flap valve

Abstract

This utility model discloses a sealed, wear-resistant, pneumatic quick-opening flap valve, which includes a valve body and a movable flap movably disposed within the valve body. A movable rotating shaft is disposed through the valve body and connected to the valve body via a bearing. One end of the movable flap is fixedly connected to the movable rotating shaft located within the valve body, and one end of the movable rotating shaft is fixedly connected to one end of a rotating arm. The other end of the rotating arm is pivotally connected to the front end of the piston rod of a cylinder. The fixed seat of the cylinder is pivotally connected to the valve body via a fixed shaft. The middle part of the rotating arm is fixedly connected to one end of a counterweight cantilever, and a counterweight block is disposed at the other end of the counterweight cantilever. In this design, the movable flap can be driven by the cylinder to rotate 90° around the center of the movable rotating shaft, thereby realizing the opening and closing of the valve body. The counterweight block can balance the torque of the movable flap, assisting the cylinder in realizing the rapid opening and closing of the valve body. The counterweight block can also provide preload force for the movable flap to ensure the airtightness of the valve body.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic valve technology, specifically to a sealed, wear-resistant, pneumatic quick-opening flap valve. Background Technology

[0002] In the metallurgical industry, materials have complex properties and contain a large amount of particulate matter, which places high demands on the wear resistance and airtightness of valves. However, the wear resistance and airtightness of valves decrease with the frequency of use. The accumulation of particles in the material can easily cause scratches on the sealing surface and valves to not close tightly, thus affecting the airtightness of the system. At the same time, it also exacerbates the difficulty and cost of maintenance for enterprises. Therefore, there is an urgent need for a sealed, wear-resistant, pneumatic quick-opening flap valve that is simple to operate, low in cost, safe and reliable, can be frequently opened and closed, and has good airtightness. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the present invention provides a sealed, wear-resistant pneumatic quick-opening flap valve to solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A sealed, wear-resistant pneumatic quick-opening flap valve is provided, comprising a valve body, an inlet located at the upper end of the valve body, an outlet located at the lower end of the valve body, and a movable flap movably disposed within the valve body for opening and closing the valve body. A movable rotating shaft is disposed through the valve body and connected to the valve body via a bearing. One end of the movable flap is fixedly connected to the movable rotating shaft within the valve body, and one end of the movable rotating shaft is fixedly connected to one end of a rotating arm. The other end of the rotating arm is pivotally connected to the front end of the piston rod of a cylinder. The fixed seat of the cylinder is pivotally connected to the valve body via a fixed shaft. The middle part of the rotating arm is fixedly connected to one end of a counterweight cantilever, and a counterweight block is detachably disposed at the other end of the counterweight cantilever.

[0005] Furthermore, the cylinder drives the movable flap to rotate around the movable shaft between horizontal and vertical states, and when it is in the horizontal state, the movable flap seals the feed inlet, and a rubber sealing layer is provided on the contact surface between the movable flap and the feed inlet.

[0006] Furthermore, the angle between the rotating arm and the movable flap is an obtuse angle, and when the movable flap is in a horizontal state, the end of the rotating arm connected to the movable shaft is higher than the end of the rotating arm connected to the piston rod.

[0007] Furthermore, the counterweight cantilever and the movable flap are arranged in parallel, and the counterweight cantilever and the movable flap are located on both sides of the rotating arm.

[0008] Furthermore, one end of the movable rotating shaft is fixedly connected to one end of the rotating arm by a pin, and the other end of the rotating arm is rotatably connected to the Y-type connector by a connecting shaft. The Y-type connector is fixed to the front end of the piston rod.

[0009] Furthermore, a detachable inspection cover is provided on one side of the valve body.

[0010] Furthermore, connecting flanges are provided on the outer ends of both the inlet and outlet.

[0011] The beneficial effects of this utility model are as follows: 1. This solution uses a cylinder to drive the piston rod to move. The piston rod drives the rotating arm, counterweight cantilever and movable shaft to rotate through the Y-type connector, thereby driving the movable flap to rotate 90° around the center of the movable shaft, thus realizing the opening and closing of the valve body. Its action is fast and the control is precise.

[0012] 2. The counterweight in this design can balance the torque of the movable flap, assisting the cylinder in achieving rapid opening and closing of the valve body; Furthermore, when the movable flap seals the feed inlet, the counterweight provides pre-tightening force to the movable flap. At the same time, the weight of the counterweight is adjustable, and in conjunction with the stroke adjustment of the cylinder, the airtightness of the valve body can be effectively guaranteed.

[0013] 3. This solution allows for quick opening of the valve body via the inspection cover for inspection of internal moving parts and seals; the rubber sealing layer has good elasticity and wear resistance, effectively preventing particulate materials from intruding into the sealing surface and ensuring high airtightness of the valve when closed; the structural design of the rubber sealing layer and the valve body effectively reduces direct scouring and wear of the valve body by materials, making it particularly suitable for working conditions containing particulate materials, such as in metallurgy and mining. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the closed structure of a sealed, wear-resistant, pneumatic quick-opening flap valve.

[0015] Figure 2 This is a schematic diagram of the structure of a sealed, wear-resistant, pneumatic quick-opening flap valve when it is opened.

[0016] The components are as follows: 1. Valve body, 2. Inlet, 3. Outlet, 4. Movable flap, 5. Movable rotating shaft, 6. Rotating arm, 7. Piston rod, 8. Fixed seat, 9. Fixed shaft, 10. Counterweight cantilever, 11. Counterweight block, 12. Connecting shaft, 13. Y-type connector, 14. Inspection cover plate, 15. Connecting flange. Detailed Implementation

[0017] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0018] like Figure 1 and Figure 2 As shown, the sealed wear-resistant pneumatic quick-opening flap valve of this solution includes a valve body 1, a feed port 2 located at the upper end of the valve body 1, a discharge port 3 located at the lower end of the valve body 1, and a movable flap 4 movably disposed inside the valve body 1 for opening and closing the valve body 1. A movable rotating shaft 5 is provided through the valve body 1, and the movable rotating shaft 5 is connected to the valve body 1 through a bearing. One end of the movable flap 4 is fixedly connected to the movable rotating shaft 5 located inside the valve body 1. One end of the movable rotating shaft 5 is fixedly connected to one end of the rotating arm 6. The other end of the rotating arm 6 is pivotally connected to the front end of the piston rod 7 of the cylinder. The fixed seat 8 of the cylinder is pivotally connected to the valve body 1 through a fixed shaft 9. The middle part of the rotating arm 6 is fixedly connected to one end of the counterweight cantilever 10. The other end of the counterweight cantilever 10 is detachably provided with a counterweight block 11.

[0019] In specific implementation, one end of the movable shaft 5 is fixedly connected to one end of the rotating arm 6 by a pin, and the other end of the rotating arm 6 is rotatably connected to the Y-type connector 13 by the connecting shaft 12. The Y-type connector 13 is fixed to the front end of the piston rod 7. The included angle between the rotating arm 6 and the movable flap 4 is an obtuse angle, and when the movable flap 4 is in a horizontal state, the end of the rotating arm 6 connected to the movable shaft 5 is higher than the end of the rotating arm 6 connected to the piston rod 7. The counterweight cantilever 10 is arranged parallel to the movable flap 4, and the counterweight cantilever 10 and the movable flap 4 are located on both sides of the rotating arm 6. A maintenance cover 14 is detachably provided on one side of the valve body 1. The valve body 1 can be quickly opened through the maintenance cover 14 to inspect the internal moving parts and seals. A connecting flange 15 is provided on the outer ends of the inlet 2 and the outlet 3 to facilitate connection with external material pipelines.

[0020] This design uses a cylinder to drive a movable flap 4 to rotate around a movable shaft 5 between horizontal and vertical states. When in the horizontal state, the movable flap 4 seals the feed inlet 2. A rubber sealing layer is provided on the contact surface between the movable flap 4 and the feed inlet 2. Specifically, the cylinder drives the piston rod 7 to rotate, which in turn drives the rotating arm 6, the counterweight cantilever 10, and the movable shaft 5 to rotate via a Y-shaped connector 13. This causes the movable flap 4 to rotate 90° around the center of the movable shaft 5, thereby opening and closing the valve body 1. The operation is rapid and precise. Simultaneously, the rubber sealing layer has good elasticity and wear resistance, effectively preventing particulate materials from intruding into the sealing surface and ensuring high airtightness of the valve when closed. The structural design of the rubber sealing layer and the internal structure of the valve body 1 effectively reduces direct scouring and wear of the valve body 1 by materials, making it particularly suitable for working conditions containing particulate materials, such as in metallurgy and mining. Furthermore, the counterweight 11 in this design balances the torque of the movable flap 4, assisting the cylinder in achieving rapid opening and closing of the valve body 1. Furthermore, when the movable flap 4 seals the feed inlet 2, the counterweight 11 can provide pre-tightening force for the movable flap 4. At the same time, the weight of the counterweight 11 is adjustable, and in conjunction with the stroke adjustment of the cylinder, it can effectively ensure the airtightness of the valve body 1.

[0021] In summary, this solution is not only structurally sound, airtight and wear-resistant, and easy to operate, but also has low maintenance costs and a wide range of applications. It is particularly suitable for material conveying systems in industries such as metallurgy, chemical engineering, and building materials that require high airtightness and wear resistance.

Claims

1. A sealed, wear-resistant, pneumatic quick-opening flap valve, characterized in that, The device includes a valve body, an inlet located at the upper end of the valve body, an outlet located at the lower end of the valve body, and a movable flap that is movably disposed within the valve body and used to open and close the valve body. A movable rotating shaft is disposed through the valve body and is connected to the valve body via a bearing. One end of the movable flap is fixedly connected to the movable rotating shaft located within the valve body. One end of the movable rotating shaft is fixedly connected to one end of a rotating arm. The other end of the rotating arm is pivotally connected to the front end of the piston rod of a cylinder. The fixed seat of the cylinder is pivotally connected to the valve body via a fixed shaft. The middle part of the rotating arm is fixedly connected to one end of a counterweight cantilever. A counterweight block is detachably disposed at the other end of the counterweight cantilever.

2. The sealed, wear-resistant, pneumatic quick-opening flap valve according to claim 1, characterized in that, The cylinder drives the movable flap to rotate around the movable shaft between horizontal and vertical states. When in the horizontal state, the movable flap seals the feed inlet. A rubber sealing layer is provided on the contact surface between the movable flap and the feed inlet.

3. The sealed, wear-resistant, pneumatic quick-opening flap valve according to claim 2, characterized in that, The angle between the rotating arm and the movable flap is an obtuse angle, and when the movable flap is in a horizontal state, the end of the rotating arm connected to the movable shaft is higher than the end of the rotating arm connected to the piston rod.

4. The sealed, wear-resistant, pneumatic quick-opening flap valve according to claim 2, characterized in that, The counterweight cantilever is arranged parallel to the movable flap, and the counterweight cantilever and the movable flap are located on both sides of the rotating arm.

5. The sealed, wear-resistant, pneumatic quick-opening flap valve according to claim 1, characterized in that, One end of the movable rotating shaft is fixedly connected to one end of the rotating arm by a pin, and the other end of the rotating arm is rotatably connected to a Y-type connector by a connecting shaft. The Y-type connector is fixed to the front end of the piston rod.

6. The sealed, wear-resistant, pneumatic quick-opening flap valve according to claim 1, characterized in that, A maintenance cover is detachably provided on one side of the valve body.

7. The sealed, wear-resistant, pneumatic quick-opening flap valve according to claim 1, characterized in that, Both the inlet and outlet are equipped with connecting flanges on their outer ends.

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