Sealing assembly applied to dome valve

Abstract

The utility model relates to the technical field of dome valves, in particular to a sealing assembly applied to a dome valve, which comprises a dome valve body, the dome body is mounted on the inner wall of the dome valve body through a mounting mechanism, the mounting mechanism comprises a mounting frame, the mounting frame is fixedly mounted on the dome valve body, and the dome valve body is mounted on the mounting frame. A double-output-shaft stepping motor is fixedly mounted on the inner wall of the mounting frame, and a lead screw is fixedly mounted at the rotating shaft end of the double-output-shaft stepping motor. By arranging the mounting mechanism, the purpose of conveniently mounting and dismounting the dome body is achieved, overhauling of the dome body is facilitated, and therefore stable use of the sealing assembly is achieved, and tools do not need to be carried when the dome is dismounted.

Description

Technical Field

[0001] The utility model relates to the technical field of dome valves, in particular to a sealing component applied to dome valves. Background Art

[0002] A dome valve is a type of valve with a dome-shaped body, suitable for high-pressure and high-temperature applications. Its simple structure and excellent sealing performance make it suitable for conveying water, petroleum products, and other applications. Dome valves offer smooth flow, low fluid resistance, and versatile operation methods. They are widely used in industries such as petrochemicals and water treatment. Actuated manually, electrically, or pneumatically, dome valves effectively control fluid flow, ensuring safe and stable system operation.

[0003] Traditional dome valve seal assembly replacement often requires a dome removal tool, which is not only complex but can also damage the sealing surface, increasing maintenance difficulty and cost. Furthermore, prolonged high-temperature, high-pressure operation can easily lead to wear and aging of the sealing material, necessitating regular dome removal and replacement to ensure stable operation of the dome valve. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a sealing component applied to a dome valve.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A sealing assembly for a dome valve is designed, comprising a dome valve body, the inner wall of which is mounted with a dome body via a mounting mechanism, the mounting mechanism comprising a mounting frame, the mounting frame being fixedly mounted on the dome valve body, a double-shaft stepper motor being fixedly mounted on the inner wall of the mounting frame, and a screw being fixedly mounted on the rotating shaft end of the double-shaft stepper motor.

[0007] Furthermore, there are two screw rods, and the two screw rods are symmetrically arranged with the double-output shaft stepping motor as the center.

[0008] Furthermore, a connecting rod is threadedly connected to the screw rod, and there are two connecting rods. The two connecting rods are symmetrically arranged with the double-output shaft stepping motor as the center, and the cross-sectional shape of the connecting rod is Z-shaped.

[0009] Furthermore, the dome valve body is rotatably connected to a shaft rod, and there are two shaft rods. Both shaft rods are cylindrical rods, and the two shaft rods are symmetrically arranged with the dome valve body as the center. A groove is provided at one end of the shaft rod, and the groove is in the shape of a square groove.

[0010] Furthermore, an insert block is slidably provided on the inner wall of the groove, the insert block is in the shape of a square rod, there are two insert blocks, one end of the insert block is connected to a socket, there are two sockets, and the dome body is fixedly mounted on the socket.

[0011] Furthermore, a through hole is provided on the connecting rod, and the connecting rod slides on the shaft rod through the through hole. The inner wall of the through hole is rotatably connected to a circular ring. A limiting groove is provided on the shaft rod, and the limiting groove is connected to the groove. The shape of the limiting groove is a square through groove. A limiting slider is fixedly installed on the insert block, and the limiting slider slides on the inner wall of the limiting groove. One end of the limiting slider is fixedly connected to the circular ring.

[0012] Furthermore, a drive shaft is fixedly mounted on one end of the shaft, and the drive shaft is in the shape of a square rod.

[0013] The utility model proposes a sealing assembly for a dome valve, which has the beneficial effect that: the utility model is provided with a mounting mechanism, which facilitates the installation and removal of the dome body, is beneficial to the maintenance of the dome body, thereby achieving stable use of the sealing assembly, and does not require tools for disassembling the dome. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connecting rod of the present invention;

[0016] Figure 3 This is a schematic diagram of the dome body of the present utility model;

[0017] Figure 4 This is a schematic diagram of the socket of the present utility model;

[0018] Figure 5 This is a cross-sectional view of the shaft rod of the present invention.

[0019] In the figure: 1. Dome valve body; 21. Connecting rod; 22. Screw rod; 23. Double-shaft stepper motor; 24. Mounting frame; 25. Limit slider; 26. Shaft; 27. Insert block; 28. Insert sleeve; 29. Ring; 210. Groove; 211. Limit slide; 3. Drive shaft; 4. Dome body. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-5A sealing assembly for a dome valve includes a dome valve body 1, characterized in that a dome body 4 is installed on the inner wall of the dome valve body 1 through a mounting mechanism, and the dome body 4 is provided for opening and closing the dome valve body 1. The mounting mechanism includes a mounting frame 24, which is fixedly mounted on the dome valve body 1. The mounting frame 24 is provided for receiving the installation of a double-output shaft stepper motor 23. The inner wall of the mounting frame 24 is fixedly mounted with a double-output shaft stepper motor 23, and the double-output shaft stepper motor 23 has forward and reverse rotation functions. The double-output shaft stepper motor 23 is provided for driving a screw rod 22 to rotate, and the screw rod 22 is fixedly mounted on the rotating shaft end of the double-output shaft stepper motor 23.

[0022] In detail, there are two screw rods 22 , the thread directions of the two screw rods 22 are opposite, and the two screw rods 22 are symmetrically arranged with the double-output shaft stepping motor 23 as the center. The setting of the screw rods 22 is used to drive the connecting rod 21 to move.

[0023] Furthermore, a connecting rod 21 is threadedly connected to the screw rod 22. There are two connecting rods 21. The two connecting rods 21 are symmetrically arranged with the dual-output shaft stepper motor 23 as the center. The cross-sectional shape of the connecting rod 21 is Z-shaped. The setting of the connecting rod 21 is used to drive the limit slider 25 to move.

[0024] Furthermore, a shaft 26 is rotatably connected to the dome valve body 1. There are two shafts 26. The shafts 26 are provided to receive the opening of the groove 210. Both shafts 26 are cylindrical rods. The two shafts 26 are symmetrically arranged with the dome valve body 1 as the center. A groove 210 is provided at one end of the shaft 26. The groove 210 is in the shape of a square groove. The groove 210 is provided to receive the sliding of the plug 27.

[0025] In more detail, an insert block 27 is slidingly provided on the inner wall of the groove 210. The insert block 27 is in the shape of a square rod. There are two insert blocks 27. The insert block 27 is provided to be inserted into the socket 28 to fix the dome body 4. One end of the insert block 27 is connected to the socket 28. There are two sockets 28. The dome body 4 is fixedly mounted on the socket 28. The socket 28 is provided to receive the insertion of the insert block 27, and the socket 28 is in the shape of a square socket.

[0026] In general, a through hole is provided on the connecting rod 21, and the through hole is set to undertake the rotation of the ring 29. The connecting rod 21 slides on the shaft rod 26 through the through hole. The inner wall of the through hole is rotatably connected with the ring 29. The setting of the ring 29 is used to undertake the installation of the limit slider 25. A limiting groove 211 is provided on the shaft rod 26. The limiting groove 211 is set to undertake the sliding of the limit slider 25. The limiting groove 211 is connected to the groove 210. The shape of the limiting groove 211 is a square through groove. The limiting slider 25 is fixedly installed on the insert block 27. The limiting slider 25 slides on the inner wall of the limiting groove 211. One end of the limiting slider 25 is fixedly connected to the ring 29. The shape of the limiting slider 25 is a square block. The setting of the limiting slider 25 is used to connect the insert block 27 and the ring 29.

[0027] When the dome body 4 needs to be disassembled, the double-output shaft stepper motor 23 is started, and the double-output shaft stepper motor 23 drives the two side screws 22 to rotate simultaneously. Since the thread directions of the two side screws 22 are opposite, and under the limiting action of the limiting slide 211 and the limiting slider 25, the two side screws 22 will drive the two side connecting rods 21 to move in the opposite direction. When the two side connecting rods 21 move, they will drive the limiting slider 25 to slide linearly along the inner wall of the limiting slide 211 through the circular ring 29. When the limiting slider 25 slides, it will drive the insert block 27 to slide linearly along the inner wall of the groove 210 until one end of the insert block 27 leaves the sleeve 28, and the fixation of the dome body 4 can be released, thereby realizing the disassembly of the dome body 4.

[0028] Finally, a drive shaft 3 is fixedly installed at one end of the shaft 26. The drive shaft 3 is in the shape of a square rod. The drive shaft 3 is set to drive the shaft 26 to rotate. When the shaft 26 rotates, it will drive the plug block 27 to rotate through the groove 210, and the plug block 27 will drive the socket 28 to rotate. The socket 28 drives the dome body 4 to rotate around the shaft 26 as the center, and cooperate with the sealing ring to realize the opening and closing of the dome valve body 1.

[0029] Working mode: During operation, when the dome valve body 1 needs to be opened, the drive shaft 3 is driven to rotate by the equipment, and the drive shaft 3 will drive the shaft 26 to rotate. When the shaft 26 rotates, it will drive the plug block 27 to rotate through the groove 210, and the plug block 27 drives the plug sleeve 28 to rotate. The plug sleeve 28 drives the dome body 4 to rotate around the shaft 26 as the center, and cooperates with the sealing ring to realize the opening and closing of the dome valve body 1.

[0030] When the dome body 4 needs to be disassembled, the double-output shaft stepper motor 23 is started, and the double-output shaft stepper motor 23 drives the two side screws 22 to rotate simultaneously. Since the thread directions of the two side screws 22 are opposite, and under the limiting action of the limiting slide 211 and the limiting slider 25, the two side screws 22 will drive the two side connecting rods 21 to move in the opposite direction. When the two side connecting rods 21 move, they will drive the limiting slider 25 to slide linearly along the inner wall of the limiting slide 211 through the circular ring 29. When the limiting slider 25 slides, it will drive the insert block 27 to slide linearly along the inner wall of the groove 210 until one end of the insert block 27 leaves the insert sleeve 28, and the fixation of the dome body 4 can be released, thereby realizing the disassembly of the dome body 4. Through the above arrangement, the disassembly and replacement of the dome body 4 is facilitated, thereby realizing the stable use of the sealing assembly.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sealing assembly for a dome valve, comprising a dome valve body (1), characterized in that: The inner wall of the dome valve body (1) is mounted with a dome body (4) via a mounting mechanism, wherein the mounting mechanism comprises a mounting frame (24), wherein the mounting frame (24) is fixedly mounted on the dome valve body (1), and a double-output shaft stepping motor (23) is fixedly mounted on the inner wall of the mounting frame (24), and a screw rod (22) is fixedly mounted on the rotating shaft end of the double-output shaft stepping motor (23).

2. A sealing assembly for a dome valve according to claim 1, characterized in that: There are two screw rods (22), and the two screw rods (22) are symmetrically arranged with the double-output shaft stepping motor (23) as the center.

3. The sealing assembly for a dome valve according to claim 1, characterized in that: A connecting rod (21) is threadedly connected to the screw rod (22). There are two connecting rods (21). The two connecting rods (21) are symmetrically arranged with the double-output shaft stepping motor (23) as the center. The cross-section of the connecting rod (21) is Z-shaped.

4. The sealing assembly for a dome valve according to claim 1, characterized in that: The dome valve body (1) is rotatably connected to a shaft rod (26), and there are two shaft rods (26). Both shaft rods (26) are cylindrical rods. The two shaft rods (26) are symmetrically arranged with the dome valve body (1) as the center. One end of the shaft rod (26) is provided with a groove (210), and the groove (210) is in the shape of a square groove.

5. The sealing assembly for a dome valve according to claim 1, characterized in that: An insert block (27) is slidably provided on the inner wall of the groove (210), the insert block (27) is in the shape of a square rod, there are two insert blocks (27), one end of the insert block (27) is plugged with a socket (28), there are two sockets (28), and the dome body (4) is fixedly mounted on the socket (28).

6. The sealing assembly for a dome valve according to claim 1, characterized in that: A through hole is provided on the connecting rod (21), and the connecting rod (21) slides on the shaft rod (26) through the through hole. The inner wall of the through hole is rotatably connected with a ring (29). A limiting groove (211) is provided on the shaft rod (26), and the limiting groove (211) is connected to the groove (210). The limiting groove (211) is in the shape of a square through groove. A limiting slider (25) is fixedly installed on the insert block (27), and the limiting slider (25) slides on the inner wall of the limiting groove (211). One end of the limiting slider (25) is fixedly connected to the ring (29).

7. The sealing assembly for a dome valve according to claim 1, characterized in that: A drive shaft (3) is fixedly mounted on one end of the shaft rod (26), and the drive shaft (3) is in the shape of a square rod.

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