Control valve with sealing device

Abstract

The utility model discloses a regulating valve with sealing device, including the frame of rectangle, the square valve plate of slideable is established in the frame, the position adjusting device is installed to one end of frame, and position adjusting device drags the valve plate and slides in the frame left and right, eccentric wheel is rotatably installed in the one end of frame away from position adjusting device, eccentric wheel is rotatably installed respectively in the inside of two long side panels of frame, and make eccentric wheel install in the downside of valve plate, eccentric wheel is driven through the drive arrangement, the utility model can solve the problem of bad sealing, and convenient driving, sealing is reliable, and maintenance cost is low.

Description

Technical Field

[0001] This utility model relates to a regulating valve with a sealing device, belonging to the field of sealing technology for regulating valves. Background Technology

[0002] Control valves are core components in industrial pipeline systems that control the flow of media. Especially in harsh working conditions with high temperature, high pressure, and high wear (such as in thermal power generation, metallurgy, and chemical industries), extremely high requirements are placed on the valves' sealing performance, heat resistance, and service life.

[0003] Traditional high-temperature control valves mostly use welded connections and integral sealing structures, achieving media blockage through multi-layer packing seals or metal hard seals. However, these two connection methods each have different application drawbacks: 1. Welded connection solution: The valve body is fixed to the upstream and downstream equipment by welding. Although the sealing performance is good, disassembly and maintenance require cutting the weld, which is not suitable for frequent disassembly scenarios. In addition, the maintenance cost is high, the equipment body is easily damaged, and there is a problem of reduced strength after the weld is repaired. 2. Integrated sealing solution: The sealing filler (such as asbestos rope) needs to be replaced as a whole, resulting in long downtime and high maintenance costs.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] This utility model addresses the shortcomings of the prior art by providing a regulating valve with a sealing device, which solves the problem of poor sealing, and is easy to drive, has reliable sealing, and low maintenance costs.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: A regulating valve with a sealing device includes a rectangular frame, a square valve plate slidably disposed within the frame, and a position adjusting device installed at one end of the frame, the position adjusting device dragging the valve plate to slide left and right within the frame. An eccentric wheel is rotatably mounted at the end of the frame away from the position adjustment device. The eccentric wheel is rotatably mounted on the inner side of the two long side plates of the frame, and the eccentric wheel is mounted on the lower side of the valve plate. The eccentric wheel is driven by a drive device.

[0007] Furthermore, two eccentric wheels are installed on each long side plate of the frame, and the driving device includes a double-headed cylinder disposed between the two eccentric wheels, with piston rods at both ends of the double-headed cylinder driving the eccentric wheels at both ends to rotate respectively.

[0008] Furthermore, the eccentric wheel is rotatably mounted on the long side plate of the frame via a drive shaft, and a pull arm is fixed to the end of the drive shaft extending outward from the long side plate of the frame. The piston rods at both ends of the double-headed cylinder are respectively hinged to the outer ends of the pull arm.

[0009] Furthermore, a limiting baffle is fixed on each side of the drive shaft on the outer side of the long side plate of the frame.

[0010] Furthermore, multiple rotating lower rollers are arranged on the inner sides of the two long side plates of the frame, and the lower rollers rotate on the underside of the valve plate.

[0011] Furthermore, the position adjustment device includes a screw, a handwheel is installed at the rear end of the screw, and a nut is fixed on the valve plate, with the screw and the nut being threadedly engaged.

[0012] Furthermore, the rear end of the screw is rotatably mounted on a square bearing seat, the bearing seat is mounted on a frame, the frame is provided with a vertically arranged sliding groove, and the bearing seat is installed in the sliding groove.

[0013] Furthermore, a row of upper rollers is provided on the upper side of the lower roller along the length of the long side plate of the frame. The valve plate is installed between the upper rollers and the lower rollers, and there is a certain gap between the lower end of the upper rollers and the upper surface of the valve plate. After the eccentric wheel lifts the valve plate, a gap is left between the upper roller and the upper surface of the valve plate.

[0014] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: When the valve plate is pushed to the end away from the handwheel, the upper surface of the valve plate is facing the discharge port (not shown in the figure). At this time, the double-headed cylinder is activated, and the double-headed cylinder pushes the pull arms at both ends, which in turn pushes the eccentric wheel to rotate, causing the eccentric wheel to lift the valve plate, so that the valve plate is tightly pressed against the discharge port, which solves the problem of poor sealing. Moreover, it is easy to drive and has reliable sealing.

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 yes Figure 1 Sectional view at point AA along the middle; Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0017] In the picture, 1-Frame, 2-Valve plate, 3-Screw, 4-Handwheel, 5-Nut, 6-Bearing seat, 7-Lower roller, 8-Eccentric wheel, 9-Upper roller, 10-Limit baffle, 11-Double-head cylinder, 12-Pull arm, 13-Drive shaft, 14-Sliding groove. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0019] like Figure 1-4 As shown, this utility model provides a regulating valve with a sealing device, including a rectangular frame 1, a square valve plate 2 slidably disposed inside the frame 1, and a position adjusting device installed at one end of the frame 1, the position adjusting device dragging the valve plate 2 to slide left and right inside the frame 1. An eccentric wheel 8 is rotatably mounted at the end of the frame 1 away from the position adjustment device. The eccentric wheel 8 is rotatably mounted on the inner side of the two long side plates of the frame 1, and the eccentric wheel 8 is mounted on the lower side of the valve plate 2. The eccentric wheel 8 is driven by a drive device.

[0020] Two eccentric wheels 8 are installed on each long side plate of the frame 1. The driving device includes a double-headed cylinder 11 disposed between the two eccentric wheels 8. The piston rods at both ends of the double-headed cylinder 11 drive the eccentric wheels 8 at both ends to rotate.

[0021] The eccentric wheel 8 is rotatably mounted on the long side plate of the frame 1 via the drive shaft 13. The end of the drive shaft 13 extending out of the long side plate of the frame 1 is fixed with a pull arm 12. The piston rods at both ends of the double-headed cylinder 11 are respectively hinged to the outer ends of the pull arm 12.

[0022] Furthermore, a limiting baffle 10 is fixed on both sides of the drive shaft 13 on the outer side of the long side plate of the frame 1.

[0023] Multiple rotating lower rollers 7 are arranged on the inner side of the two long side plates of the frame 1, and the lower rollers 7 rotate on the lower side of the valve plate 2.

[0024] The position adjustment device includes a screw 3, a handwheel 4 is installed at the rear end of the screw 3, and a nut 5 is fixed on the valve plate 2. The screw 3 and the nut 5 are threaded together.

[0025] The rear end of the screw 3 is rotatably mounted on a square bearing seat 6, which is mounted on a frame 1. The frame 1 has a vertically arranged sliding groove 14, and the bearing seat 6 is installed in the sliding groove 14. When the eccentric wheel 8 lifts the valve plate 2, the screw 3 and the bearing seat 6 can move upward accordingly.

[0026] A row of upper rollers 9 is provided on the upper side of the lower roller 7 along the length of the long side plate of the frame 1. The valve plate 2 is installed between the upper rollers 9 and the lower rollers 7, and there is a certain gap between the lower end of the upper rollers 9 and the upper surface of the valve plate 2. After the eccentric wheel 8 lifts the valve plate 2, there is still a gap between the upper rollers 9 and the upper surface of the valve plate 2. When the handwheel 4 is turned, the valve plate 2 can be clamped between the upper rollers 9 and the lower rollers 7 to prevent the valve plate 2 from flipping.

[0027] The specific working principle of this utility model: Rotating the handwheel 4 drives the screw 3 to rotate, thereby moving the valve plate 2 back and forth. The valve plate 2 is clamped between the upper roller 9 and the lower roller 7 to prevent the valve plate 2 from flipping. When the valve plate 2 is pushed to the end away from the handwheel 4, the upper surface of the valve plate 2 faces the discharge port (not shown in the figure). At this time, the double-headed cylinder 11 is activated. The double-headed cylinder 11 pushes the pull arms 12 at both ends, which pushes the eccentric wheel 8 to rotate, so that the eccentric wheel 8 lifts the valve plate 2, thereby making the valve plate 2 tightly press against the discharge port, solving the problem of poor sealing. Moreover, it is easy to drive and has reliable sealing.

[0028] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A regulating valve with a sealing device, characterized in that: It includes a rectangular frame (1), a square valve plate (2) is slidably provided inside the frame (1), and a position adjustment device is installed at one end of the frame (1). The position adjustment device drags the valve plate (2) to slide left and right inside the frame (1). An eccentric wheel (8) is rotatably mounted on the end of the frame (1) away from the position adjustment device. The eccentric wheel (8) is rotatably mounted on the inner side of the two long side plates of the frame (1) respectively, and the eccentric wheel (8) is mounted on the lower side of the valve plate (2). The eccentric wheel (8) is driven by a drive device.

2. A regulating valve with a sealing device as described in claim 1, characterized in that: Two eccentric wheels (8) are installed on each long side plate of the frame (1). The driving device includes a double-headed cylinder (11) disposed between the two eccentric wheels (8). The piston rods at both ends of the double-headed cylinder (11) drive the eccentric wheels (8) at both ends to rotate respectively.

3. A regulating valve with a sealing device as described in claim 2, characterized in that: The eccentric wheel (8) is rotatably mounted on the long side plate of the frame (1) via the drive shaft (13). The end of the drive shaft (13) extending out of the long side plate of the frame (1) is fixed with a pull arm (12). The piston rods at both ends of the double-headed cylinder (11) are respectively hinged to the outer ends of the pull arm (12).

4. A regulating valve with a sealing device as described in claim 3, characterized in that: A limiting baffle (10) is fixed on each side of the drive shaft (13) on the outside of the long side plate of the frame (1).

5. A regulating valve with a sealing device as described in claim 4, characterized in that: Multiple rotating lower rollers (7) are arranged on the inner side of the two long side plates of the frame (1), and the lower rollers (7) rotate on the lower side of the valve plate (2).

6. A regulating valve with a sealing device as described in claim 1, characterized in that: The position adjustment device includes a screw (3), a handwheel (4) is installed at the rear end of the screw (3), and a nut (5) is fixed on the valve plate (2). The screw (3) and the nut (5) are threaded together.

7. A regulating valve with a sealing device as described in claim 6, characterized in that: The rear end of the screw (3) is rotatably mounted on a square bearing seat (6), which is mounted on a frame (1). The frame (1) is provided with a vertically arranged sliding groove (14), and the bearing seat (6) is installed in the sliding groove (14).

8. A regulating valve with a sealing device as described in claim 5, characterized in that: A row of upper rollers (9) is provided on the upper side of the lower roller (7) along the length direction of the long side plate of the frame (1). The valve plate (2) is installed between the upper rollers (9) and the lower rollers (7), and there is a certain gap between the lower end of the upper rollers (9) and the upper surface of the valve plate (2). After the eccentric wheel (8) lifts the valve plate (2), there is a gap between the upper roller (9) and the upper surface of the valve plate (2).

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