High-performance three-eccentric butterfly plate

Abstract

The utility model discloses a high-performance triple-eccentric butterfly plate, which belongs to the technical field of triple-eccentric butterfly valves, and is characterized in that a triple-eccentric butterfly plate body comprises a plate body, the side edge of the plate body is provided with an arc-shaped surface and a conical surface, the surface of the plate body is provided with a groove, and the inner wall of the groove is fixedly connected with a first mounting block and a second mounting block; the high-performance triple-eccentric butterfly plate comprises a first mounting block and a second mounting block, a first mounting hole is formed in the surface of the first mounting block, a second mounting hole is formed in the surface of the second mounting block, and locking assemblies are arranged in the first mounting hole and the second mounting hole. According to the butterfly plate, the valve shaft and the butterfly plate can be quickly assembled, the rotating stability of the butterfly plate can be guaranteed, the stability of the opening and closing position of the butterfly plate is further guaranteed, the material consumption of the butterfly plate can be reduced under the condition that the thickness of the butterfly plate is not changed through the arranged reinforcing plate and the groove, the cost of the butterfly plate is further reduced, and the market competitiveness of the butterfly plate is improved.

Description

Technical Field

[0001] This utility model relates to the field of triple eccentric butterfly valve technology, and more specifically, to a high-performance triple eccentric butterfly plate. Background Technology

[0002] A triple-eccentric valve is a butterfly valve in which the valve stem axis is simultaneously offset from both the center of the butterfly plate and the center of the valve body, and the rotation axis of the valve seat is at a certain angle to the axis of the valve body passage.

[0003] Currently, the butterfly plate of commonly used high-performance triple eccentric butterfly valves requires drilling holes and then reinforcement after valve shaft installation, which is inconvenient and prone to detachment or omission, making it impossible to guarantee the stability of the disc's opening and closing position. Furthermore, this method results in a thicker disc, increasing costs. For example, a high-performance triple eccentric butterfly valve disclosed in publication number CN213871159U includes a valve body, in which two shaft holes are respectively provided with bushings, the inner walls of which are connected to the valve shaft. A rear end cap is provided on the valve body at the shaft hole corresponding to the end of the valve shaft. The valve shaft and the butterfly plate are connected by a sliding push-fit connection. The inner circumferential walls of the two bushings that contact the valve shaft are respectively provided with annularly distributed graphite braided packing.

[0004] As can be seen from the above-mentioned disclosed scheme, after the valve shaft passes through the butterfly plate, it is fixed by a sliding pusher connection. This not only requires drilling holes on the surface of the disc plate, but also makes the disc plate thicker, increasing the amount of material used and raising the production cost of the disc plate. Furthermore, the installation of the sliding pusher is more troublesome and is prone to being missed. This may cause the valve shaft and the disc plate to rotate and slip, which in turn leads to the control of the butterfly valve's opening and closing position not being in place, reducing its opening and closing stability. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a high-performance triple eccentric butterfly plate. This high-performance triple eccentric butterfly plate, through the setting of a first mounting block, a second mounting block, a first limiting rod, a second limiting rod, and a limiting component, not only facilitates the quick assembly of the valve shaft and the disc, but also ensures its rotational stability, thereby ensuring the stability of the disc's switching position. Furthermore, through the setting of reinforcing plates and grooves, the amount of material used in the disc can be reduced without changing the disc thickness, thereby reducing the cost of the disc and improving its market competitiveness.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A high-performance triple-eccentric disc plate includes a triple-eccentric disc plate body. The triple-eccentric disc plate body includes a plate body with an arc-shaped surface and a conical surface on its side. A groove is formed on the surface of the plate body. A first mounting block and a second mounting block are fixedly connected to the inner wall of the groove. A first mounting hole is formed on the surface of the first mounting block, and a second mounting hole is formed on the surface of the second mounting block. A locking component is provided inside the first mounting hole and the second mounting hole. The locking component engages with a valve shaft body. This high-performance triple-eccentric disc plate, through the arrangement of the first mounting block, the second mounting block, the first limiting rod, the second limiting rod, and the limiting component, not only facilitates the quick assembly of the valve shaft and the disc plate, but also ensures its rotational stability, thereby ensuring the stability of the disc plate's opening and closing position. Furthermore, through the arrangement of the reinforcing plate and the groove, the amount of material used in the disc plate can be reduced without changing the disc plate thickness, thereby reducing the cost of the disc plate and improving its market competitiveness.

[0008] Furthermore, the locking assembly includes a limiting member, the inner walls of the first mounting hole and the second mounting hole are fixedly connected to a limiting groove, the inner wall of the limiting groove is slidably connected to the surface of the limiting member, the limiting member has a compressive elastic force, which not only facilitates locking with the valve shaft body, but also allows it to automatically retract into the limiting groove when the valve shaft body is removed upwards.

[0009] Furthermore, the valve shaft body includes a control rod, one end of which is fixedly connected to a first limiting rod, and one end of which is fixedly connected to a second limiting rod. The outer diameter of the first limiting rod is larger than the outer diameter of the second limiting rod, which can limit its downward installation position.

[0010] Furthermore, the limiting member is made of spring steel, one end of the limiting member is provided with an inclined surface, and the other end of the limiting member is provided with a supporting surface. When the valve shaft body exerts upward force, the inclined surface allows the limiting member to automatically disengage from the slot.

[0011] Furthermore, a reinforcing plate is fixedly connected to the inner wall of the groove, and the two ends of the reinforcing plate are respectively fixedly connected to the surfaces of the first mounting block and the second mounting block. The reinforcing plate can increase the connection between the first mounting block and the second mounting block.

[0012] Furthermore, both the first and second limiting rods have polygonal cross-sectional shapes. One end of the second limiting rod is fixedly connected to a connecting rod. The surface of the first limiting rod is slidably connected to the inner wall of the first mounting hole, and the surface of the second limiting rod is slidably connected to the inner wall of the second mounting hole, which can prevent slippage and rotation between the limiting rod and the mounting hole.

[0013] Furthermore, both the first and second limiting rods have slots on their surfaces. Once one end of the limiting member is engaged in the slot, the valve shaft body can be prevented from moving axially at will.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) This solution, through the first mounting block, the second mounting block, the first limit rod, the second limit rod and the limit component, not only facilitates the quick assembly of the valve shaft and the disc, but also ensures its rotational stability, thereby ensuring the stability of the disc's switching position.

[0016] (2) By setting up reinforcing plates and grooves, this solution can reduce the amount of material used in the disc plate without changing the thickness of the disc plate, thereby reducing the cost of the disc plate and improving the market competitiveness of the disc plate. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the three-eccentric disc body structure of this utility model;

[0019] Figure 3 for Figure 2 A cross-sectional view of the first mounting block structure;

[0020] Figure 4 for Figure 2 A schematic diagram of the limiting component structure;

[0021] Figure 5 This is a schematic diagram of the valve shaft body structure of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Triple eccentric disc body; 11. Plate body; 12. Arc-shaped surface; 13. Conical surface; 14. Groove; 15. Reinforcing plate; 2. First mounting block; 21. First mounting hole; 22. Limiting groove; 23. Limiting component; 24. Inclined surface; 25. Supporting surface; 3. Second mounting block; 31. Second mounting hole; 5. Valve shaft body; 51. Control rod; 52. First limiting rod; 53. Second limiting rod; 54. Slot; 55. Connecting rod. Detailed Implementation

[0024] 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.

[0025] Example 1: Please refer to Figure 1-5A high-performance triple eccentric butterfly valve includes a triple eccentric disc body 1, which is movably connected to the inner wall of the high-performance butterfly valve body. The butterfly valve body is also provided with components such as a bushing, packing, and cover plate connected to the valve shaft body 5. Its composition and working principle are well known to those skilled in the art and will not be described in detail here. The triple eccentric disc body 1 includes a plate 11, with an arc-shaped surface 12 and a conical surface 13 on the side of the plate 11. A groove 14 is formed on the surface of the plate 11, which has the function of reducing weight and material. The wall thickness of the plate 11 at the bottom of the groove 14 is the same as the width of the arc-shaped surface 12. A first mounting block 2 and a second mounting block 3 are fixedly connected to the inner wall of the groove 14. A first mounting hole 21 is formed on the surface of the first mounting block 2, and a second mounting hole 31 is formed on the surface of the second mounting block 3. The first mounting hole 21 and the second mounting hole 31 are connected to the inner wall of the groove 14. The valve body 1 has an internal locking assembly, which includes a limiting member 23. The inner walls of the first mounting hole 21 and the second mounting hole 31 are fixedly connected to a limiting groove 22. The inner wall of the limiting groove 22 is slidably connected to the surface of the limiting member 23. The limiting member 23 has a compressive elastic force, which not only facilitates locking with the valve shaft body 5, but also allows it to automatically retract into the limiting groove 22 when the valve shaft body 5 is removed upwards. The locking assembly is engaged with the valve shaft body 5. The valve shaft body 5 includes a control rod 51. The surface of the control rod 51 is movably connected to the surface of the plate 11. One end of the control rod 51 is fixedly connected to a first limiting rod 52, and one end of the first limiting rod 52 is fixedly connected to a second limiting rod 53. The outer diameter of the first limiting rod 52 is larger than the outer diameter of the second limiting rod 53, which can limit its downward installation position. One end of the valve shaft body 5 is provided with a turntable or knob for easy manual opening and closing of the butterfly valve.

[0026] The limiting member 23 is made of spring steel. One end of the limiting member 23 is provided with an inclined surface 24, and the other end of the limiting member 23 is provided with a support surface 25. When the valve shaft body 5 is exerted upward force, the inclined surface 24 allows the limiting member 23 to automatically disengage from the slot 54. The inner wall of the groove 14 is fixedly connected with a reinforcing plate 15. The two ends of the reinforcing plate 15 are fixedly connected to the surfaces of the first mounting block 2 and the second mounting block 3, respectively. The reinforcing plate 15 can increase the connection strength between the first mounting block 2 and the second mounting block 3.

[0027] The first limiting rod 52 and the second limiting rod 53 both have polygonal cross-sectional shapes. One end of the second limiting rod 53 is fixedly connected to a connecting rod 55. The surface of the first limiting rod 52 is slidably connected to the inner wall of the first mounting hole 21, and the surface of the second limiting rod 53 is slidably connected to the inner wall of the second mounting hole 31. This can prevent slippage and rotation between the limiting rod and the mounting hole. The surfaces of the first limiting rod 52 and the second limiting rod 53 are both provided with slots 54. After one end of the limiting member 23 is inserted into the slot 54, it can prevent the valve shaft body 5 from moving axially at will.

[0028] When installing the high-performance triple eccentric butterfly plate, the connecting rod 55 of the valve shaft body 5 can be first passed vertically downward through the first mounting hole 21, and then continued downward through the second mounting hole 31. At this time, the second limiting rod 53 passes downward through the first mounting hole 21 and is inserted into the second mounting hole 31. At the same time, the first limiting rod 52 is inserted downward into the first mounting hole 21, with one end abutting against the surface of the second mounting block 3. Simultaneously, the first section of the control rod 51 abuts against the surface of the first mounting block 2. At the same time, the first limiting rod 52 penetrates the first mounting block 3. When the hole 21 and the second limiting rod 53 are inserted into the second mounting hole 31, they compress the limiting member 23, causing the limiting member 23 to retract into the limiting groove 22 and generate a compressive elastic force. After the first limiting rod 52 and the second limiting rod 53 are installed in place, the limiting member 23 releases the elastic force, causing one end to pop out and lock into the slot 54. This prevents the valve shaft body 5 and the triple eccentric disc body 1 from moving axially at will, and also prevents the two from rotating and slipping. This improves the stability of the disc's closed position, thereby enhancing the sealing stability of the butterfly valve.

[0029] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A high-performance triple eccentric disc plate, comprising a triple eccentric disc plate body (1), characterized in that: The triple eccentric disc body (1) includes a plate (11), the side of which is provided with an arc-shaped surface (12) and a conical surface (13). The surface of the plate (11) is provided with a groove (14). The inner wall of the groove (14) is fixedly connected to a first mounting block (2) and a second mounting block (3). The surface of the first mounting block (2) is provided with a first mounting hole (21), and the surface of the second mounting block (3) is provided with a second mounting hole (31). The first mounting hole (21) and the second mounting hole (31) are provided with locking components inside, and the locking components are engaged with a valve shaft body (5).

2. The high-performance triple-eccentric butterfly plate according to claim 1, characterized in that: The locking assembly includes a limiting member (23), and the inner walls of the first mounting hole (21) and the second mounting hole (31) are fixedly connected to a limiting groove (22), and the inner wall of the limiting groove (22) is slidably connected to the surface of the limiting member (23).

3. The high-performance triple-eccentric butterfly plate according to claim 1, characterized in that: The valve shaft body (5) includes a control rod (51), one end of which is fixedly connected to a first limiting rod (52), and one end of the first limiting rod (52) is fixedly connected to a second limiting rod (53).

4. A high-performance triple-eccentric butterfly plate according to claim 2, characterized in that: The limiting member (23) is made of spring steel. One end of the limiting member (23) is provided with an inclined surface (24), and the other end of the limiting member (23) is provided with a supporting surface (25).

5. A high-performance triple-eccentric butterfly plate according to claim 1, characterized in that: The inner wall of the groove (14) is fixedly connected to a reinforcing plate (15), and the two ends of the reinforcing plate (15) are fixedly connected to the surfaces of the first mounting block (2) and the second mounting block (3), respectively.

6. A high-performance triple-eccentric butterfly plate according to claim 3, characterized in that: The cross-sectional shape of the first limiting rod (52) and the second limiting rod (53) is polygonal, and a connecting rod (55) is fixedly connected to one end of the second limiting rod (53).

7. A high-performance triple-eccentric butterfly plate according to claim 3, characterized in that: The surfaces of the first limiting rod (52) and the second limiting rod (53) are both provided with slots (54).

Images