Scouring-resistant cut-off butterfly valve

Abstract

The utility model relates to the field of cut-off butterfly valves, and discloses a scouring-resistant cut-off butterfly valve which comprises a valve seat frame, the top end of the valve seat frame is fixedly connected with an upper side supporting block, the interior of the valve seat frame is rotationally connected with a rotating rod, and the two sides of the rotating rod are both fixedly connected with butterfly valves. An adjusting handle is fixedly connected to the upper side of the outer portion of the rotating rod, a limiting adjusting assembly is installed in the upper side of the upper side supporting block, dispersing slopes are arranged at the two ends of the outer side of the butterfly valve, wear-resisting notches are formed in the middle of the outer side of the butterfly valve, and ceramic wear-resisting arc pieces are fixedly connected to the interiors of the wear-resisting notches. A valve face sealing assembly is installed in the valve seat frame. According to the butterfly valve, the minimum contact area of the valve in contact with water flow is kept, the water flow is cut off, abrasion of the valve is reduced, the cut-off and sealing effects of the butterfly valve are further improved through double sealing, and the stability of the butterfly valve for blocking water flow fluid is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of shut-off butterfly valves, and in particular to a erosion-resistant shut-off butterfly valve. Background Technology

[0002] A butterfly valve is a common type of valve used to control the flow of fluids. Its name comes from its shape, which resembles the outstretched wings of a butterfly. The main features of a butterfly valve are a circular or elliptical valve body, a rotating disc, and a transmission mechanism. Butterfly valves are commonly used in large-diameter pipelines because they can provide a large flow passage and are relatively lightweight, easy to install, and easy to maintain.

[0003] A search revealed that the erosion-resistant quick-shutdown butterfly valve, with announcement number CN220168588U, includes a valve tube. A fixed seat is fixedly mounted on the top of the valve tube, and a valve stem is rotatably mounted inside the fixed seat. A valve disc is fixedly mounted on the outer wall of the valve stem, and pads are fixedly connected to both sides of the valve disc. Each pad has an inner hole, and a spring is fixedly mounted inside the inner hole. One end of the spring is fixedly connected to a telescopic cylinder. When the valve stem rotates to open the butterfly valve, the telescopic cylinder retracts into the inner hole due to the spring force, causing a protective plate to move closer to one side of the valve disc. The protective plate then shields the side of the valve disc, reducing erosion and wear on the valve disc side during media flow. This improves the erosion resistance of the quick-shutdown butterfly valve and prevents sealing defects caused by valve disc wear after long-term use, thus ensuring the effective media shut-off of the quick-shutdown butterfly valve.

[0004] Based on the aforementioned patent, the butterfly valve mentioned in its background technology is often used for media with large flow rates. When using the butterfly valve to control the shut-off of the flowing medium, the medium flows parallel to the valve disc in the pipeline, and the flowing medium will scour the sides of the valve disc. Due to the large flow rate and fast flow speed of the medium, the sides of the valve disc will be scoured and worn over a long period of use. Consequently, the sides of the valve disc may not fit the sealing ring properly in subsequent use, thus affecting the shut-off effect of the butterfly valve. In response to this technical problem, this application proposes a scour-resistant shut-off butterfly valve. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an erosion-resistant shut-off butterfly valve that reduces valve wear and improves sealing performance.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A erosion-resistant shut-off butterfly valve includes a valve seat frame, an upper support block fixedly connected to the top of the valve seat frame, a rotating rod rotatably connected inside the valve seat frame, butterfly valves fixedly connected to both sides of the rotating rod, an adjusting handle fixedly connected to the upper outer side of the rotating rod, a limit adjustment component installed inside the upper side of the upper support block, dispersion inclined surfaces opened at both ends of the outer side of the butterfly valve, wear-resistant grooves opened in the middle of the outer side of the butterfly valve, ceramic wear-resistant arc plates fixedly connected inside the wear-resistant grooves, and a valve face sealing component installed inside the valve seat frame.

[0008] Furthermore, the valve face sealing assembly includes limiting sealing blocks located on both sides inside the valve seat frame, and sealing strips are fixedly connected to the inner side of each limiting sealing block. Sealing grooves are formed on the opposite sides of the multiple butterfly valves.

[0009] Furthermore, the limiting adjustment assembly includes a traction slide groove located on the inner side of the top of the upper support block. Limit slots are opened on both sides of the traction slide groove. An adjustment slot is opened on the outer side of the upper support block. A limiting block is nested inside the limiting slot. An adjusting threaded rod is rotatably connected to the outer left side of the rotating rod. An adjusting block is fixedly connected to the outer side of the adjusting threaded rod.

[0010] Furthermore, the external thread of the adjusting threaded rod is connected inside the limiting block.

[0011] Furthermore, the external sliding connection of the adjusting threaded rod is inside the adjusting slot.

[0012] Furthermore, the external dimensions of the limiting block are adapted to the internal dimensions of the traction chute.

[0013] Furthermore, the outer surface of the sealing strip is nested inside the sealing groove.

[0014] Furthermore, an anti-detachment plate is fixedly connected to the top end of the rotating rod.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the butterfly valve is limited by a rotating rod, a butterfly valve, a limiting block, an adjusting block, an adjusting handle, a traction slide, a limiting groove, an adjusting threaded rod, an adjusting groove, a wear-resistant groove, and a dispersing inclined surface. The valve is perpendicular to the direction of water flow, so that the valve contacts the water flow with the minimum contact area, cuts the water flow, and reduces the wear of the valve.

[0017] 2. In this utility model, the butterfly valve is shut off and sealed by rotating rod, butterfly valve, sealing groove, limiting sealing block, sealing strip, upper support block and adjusting handle. The double sealing further improves the shut-off and sealing effect of the butterfly valve and ensures the stability of the butterfly valve in blocking water flow. Attached Figure Description

[0018] Figure 1 This is an overall view of an erosion-resistant shut-off butterfly valve proposed in this utility model;

[0019] Figure 2 This utility model provides a valve seat frame mechanism diagram for an erosion-resistant shut-off butterfly valve.

[0020] Figure 3 This is a diagram of the upper support block mechanism of an erosion-resistant shut-off butterfly valve proposed in this utility model.

[0021] Figure 4 This utility model provides a butterfly valve mechanism diagram for a erosion-resistant shut-off butterfly valve.

[0022] Figure 5 for Figure 4 Enlarged view of point A.

[0023] Legend:

[0024] 1. Valve seat frame; 2. Upper support block; 3. Adjusting block; 4. Limiting block; 5. Anti-detachment plate; 6. Adjusting handle; 7. Rotating rod; 8. Butterfly valve; 9. Limiting sealing block; 10. Sealing strip; 11. Traction slide groove; 12. Adjusting threaded rod; 13. Limiting groove; 14. Adjusting groove; 15. Sealing groove; 16. Ceramic wear-resistant arc plate; 17. Wear-resistant groove; 18. Dispersion slope. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1-5This utility model provides an embodiment of a shock-resistant shut-off butterfly valve, comprising a valve seat frame 1, an upper support block 2 fixedly connected to the top of the valve seat frame 1, a rotating rod 7 rotatably connected inside the valve seat frame 1, butterfly valves 8 fixedly connected to both sides of the rotating rod 7, an adjusting handle 6 fixedly connected to the upper side of the rotating rod 7, a limit adjustment component installed inside the upper side of the upper support block 2, a dispersing inclined surface 18 opened at both ends of the outer side of the butterfly valves 8, a wear-resistant groove 17 opened in the middle of the outer side of the butterfly valves 8, a ceramic wear-resistant arc plate 16 fixedly connected inside the wear-resistant groove 17, and a valve surface seal installed inside the valve seat frame 1. The sealing assembly and the limit adjustment assembly include a traction slide 11 located on the inner side of the top of the upper support block 2. Limit slots 13 are opened on both sides of the traction slide 11. An adjustment slot 14 is opened on the outer side of the upper support block 2. A limit block 4 is nested inside the limit slot 13. An adjustment threaded rod 12 is rotatably connected to the outer left side of the rotating rod 7. An adjustment block 3 is fixedly connected to the outer side of the adjustment threaded rod 12. The outer threaded connection of the adjustment threaded rod 12 is inside the limit block 4. The outer sliding connection of the adjustment threaded rod 12 is inside the adjustment slot 14. The outer dimensions of the limit block 4 are adapted to the inner dimensions of the traction slide 11.

[0027] When the butterfly valve needs to be opened to release fluid, the adjusting threaded rod 12 is rotated by turning the adjusting block 3. As the outer thread of the adjusting threaded rod 12 contacts the inner thread of the limiting block 4, the limiting block 4 moves inward. When the inner side of the limiting block 4 contacts the inner wall of the traction slide 11, the rotating rod 7 is rotated by the adjusting handle 6, causing the adjusting threaded rod 12 to slide inside the adjusting slot 14. The adjusting threaded rod 12 also causes the limiting block 4 to slide inside the traction slide 11. When the limiting block 4 contacts the limiting groove 13 on the other side, the adjusting block 3 is rotated in the opposite direction, so that the limiting block 4 slides into the interior of the limiting groove 13, thereby fixing the rotating rod 7. At this time, the rotating rod 7 rotates at an angle of 90°, and the water flow directly contacts the front of the butterfly valve 8. The water flow is cut by the dispersing slope 18, reducing the direct contact area between the water flow and the butterfly valve 8. In addition, the wear-resistant groove 17 has a good wear resistance effect, so that the valve contacts the water flow with the minimum contact area, cuts the water flow, and reduces the wear of the valve.

[0028] Reference Figure 1 , Figure 4 and Figure 5 The valve face sealing assembly includes limiting sealing blocks 9 located on both sides inside the valve seat frame 1. Sealing strips 10 are fixedly connected to the inner side of each limiting sealing block 9. Sealing grooves 15 are formed on the opposite sides of multiple butterfly valves 8. The outer side of the sealing strips 10 is nested inside the sealing grooves 15 respectively.

[0029] When the butterfly valve needs to be shut off, rotate the adjusting block 3 again and rotate the adjusting handle 6 to be perpendicular to the top of the valve seat frame 1. Then, slide the limiting block 4 back into the limiting groove 13 through the adjusting block 3. At this time, the outer side of the butterfly valve 8 is completely attached to the inner wall of the valve seat frame 1, sealing the valve port. The outer side of the sealing strip 10 is nested inside the sealing groove 15 for further sealing, completing the double sealing of the valve when shutting off. The double sealing further improves the shut-off sealing effect of the butterfly valve and ensures the stability of the butterfly valve in blocking the water flow.

[0030] Reference Figure 1 An anti-detachment plate 5 is fixedly connected to the top of the rotating rod 7;

[0031] When the adjusting handle 6 is rotated, the anti-detachment plate 5 restricts the adjustment handle 6, protects the rotation of the adjusting handle 6, and improves the stability of valve opening and closing.

[0032] Working principle: When the butterfly valve needs to be opened to release fluid, the adjusting screw rod 12 is rotated by turning the adjusting block 3, thereby moving the limiting block 4 inward. When the inner side of the limiting block 4 contacts the inner wall of the traction groove 11, the rotating rod 7 is rotated by the adjusting handle 6, causing the adjusting screw rod 12 to slide inside the adjusting groove 14. The adjusting screw rod 12 also causes the limiting block 4 to slide inside the traction groove 11. When the limiting block 4 contacts the limiting groove 13 on the other side, the adjusting block 3 is rotated in the opposite direction, causing the limiting block to... 4. Slide the limit block 4 into the limit groove 13 to fix the rotating rod 7. The wear-resistant groove 17 has a good wear resistance. When the butterfly valve needs to be shut off, rotate the adjusting block 3 again and rotate the adjusting handle 6 to be perpendicular to the top of the valve seat frame 1. The limit block 4 is slid into the limit groove 13 again through the adjusting block 3. At this time, the outer side of the butterfly valve 8 is completely attached to the inner wall of the valve seat frame 1 to seal the valve port. The outer side of the sealing strip 10 is nested inside the sealing groove 15 to further seal the valve and complete the double sealing of the valve when shut off.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A erosion-resistant shut-off butterfly valve, comprising a valve seat frame (1), characterized in that: The valve seat frame (1) is fixedly connected to the top of an upper support block (2). A rotating rod (7) is rotatably connected inside the valve seat frame (1). A butterfly valve (8) is fixedly connected to both sides of the rotating rod (7). An adjusting handle (6) is fixedly connected to the upper side of the rotating rod (7). A limit adjustment component is installed inside the upper side of the upper support block (2). A dispersing inclined surface (18) is opened at both ends of the outer side of the butterfly valve (8). A wear-resistant groove (17) is opened in the middle of the outer side of the butterfly valve (8). A ceramic wear-resistant arc plate (16) is fixedly connected inside the wear-resistant groove (17). A valve face sealing component is installed inside the valve seat frame (1).

2. The erosion-resistant shut-off butterfly valve according to claim 1, characterized in that: The valve face sealing assembly includes limiting sealing blocks (9) located on both sides inside the valve seat frame (1). The inner side of each limiting sealing block (9) is fixedly connected with a sealing strip (10), and the opposite sides of the multiple butterfly valves (8) have sealing grooves (15).

3. The erosion-resistant shut-off butterfly valve according to claim 1, characterized in that: The limiting adjustment assembly includes a traction slide (11) located on the inner side of the top of the upper support block (2). Limiting slots (13) are opened on both sides of the traction slide (11). An adjustment slot (14) is opened on the outer side of the upper support block (2). A limiting block (4) is nested inside the limiting slot (13). An adjusting threaded rod (12) is rotatably connected to the outer left side of the rotating rod (7). An adjusting block (3) is fixedly connected to the outer side of the adjusting threaded rod (12).

4. The erosion-resistant shut-off butterfly valve according to claim 3, characterized in that: The external thread of the adjusting threaded rod (12) is connected to the inside of the limiting block (4).

5. The erosion-resistant shut-off butterfly valve according to claim 3, characterized in that: The external sliding connection of the adjusting threaded rod (12) is inside the adjusting slot (14).

6. The erosion-resistant shut-off butterfly valve according to claim 3, characterized in that: The external dimensions of the limiting block (4) are adapted to the internal dimensions of the traction chute (11).

7. The erosion-resistant shut-off butterfly valve according to claim 2, characterized in that: The outer surfaces of the sealing strips (10) are respectively nested inside the sealing grooves (15).

8. The erosion-resistant shut-off butterfly valve according to claim 1, characterized in that: An anti-detachment plate (5) is fixedly connected to the top of the rotating rod (7).

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