New valve plate structure of high-strength corrosion-resistant butterfly valve

Abstract

The utility model discloses a novel valve plate structure of high strength corrosion -resistant butterfly valve, including valve body, one side of valve body is equipped with the valve rod, the lateral wall fixedly connected with valve plate of valve rod, both sides of valve body all are connected with the protection tube of sliding, the opposite lateral wall of valve body and protection tube is equipped with the limiting mechanism for to protection tube spacing, the inner wall of valve body is equipped with two symmetrical sliding slot of setting, the sliding connection of sliding slot has the abutment, one side of valve body is equipped with the drive mechanism for to abutment movement drive. The utility model discloses through setting up two with valve plate synchronous cooperation's abutment structure in the valve body, can provide contact support to valve plate when using, guarantee the use intensity of valve plate, avoid the problem that valve plate appears deformation because of liquid flow rate and pressure factor etc.

Description

Technical Field

[0001] This utility model relates to the field of valve body structure technology, and in particular to a novel valve plate structure for a high-strength, corrosion-resistant butterfly valve. Background Technology

[0002] In existing butterfly valve applications, there are some obvious defects in the valve plate structure, which affect the overall performance of the butterfly valve.

[0003] First, the valve plate has insufficient strength. In some high-pressure, high-flow fluid transportation systems, traditional valve plates are subjected to high pressure and are prone to deformation, leading to seal failure between the valve plate and the valve seat and subsequent fluid leakage. Second, it has poor corrosion resistance. When transporting corrosive fluids, such as acid and alkali solutions in chemical production, traditional valve plate materials and surface treatment processes are insufficient to effectively resist corrosion. The valve plate surface is easily corroded, shortening the valve plate's service life and increasing maintenance costs and replacement frequency. In addition, the existing valve plate structure has deficiencies in sealing design. The sealing surface is prone to wear, and the sealing effect is greatly affected by fluid pressure fluctuations, making it impossible to maintain good sealing performance under various operating conditions, thus affecting the normal use of the butterfly valve. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a novel valve plate structure for a high-strength, corrosion-resistant butterfly valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel valve plate structure for a high-strength, corrosion-resistant butterfly valve includes a valve body. A valve stem is provided through one side of the valve body, and a valve plate is fixedly connected to the side wall of the valve stem. Protective tubes are slidably connected to both sides of the valve body. A limiting mechanism for limiting the movement of the protective tubes is provided on the opposite side wall of the valve body and the protective tubes. Two symmetrically arranged sliding grooves are opened on the inner wall of the valve body, and a stop plate is slidably connected in the sliding grooves. A driving mechanism for moving the stop plate is provided on one side of the valve body.

[0007] Preferably, the limiting mechanism includes multiple circumferentially arranged snap-fit ​​grooves formed on the inner wall of the valve body, and multiple circumferentially arranged snap-fit ​​blocks are fixedly connected to the side wall of the protective tube, with the snap-fit ​​blocks slidably connected in the snap-fit ​​grooves.

[0008] Preferably, a sealing gasket is fitted at one end of the protective tube near the valve plate, and the sealing gasket abuts against the abutment plate.

[0009] Preferably, the drive mechanism includes a gear fixedly connected to the side wall of the valve stem, and two centrally symmetrical toothed plates are provided on both sides of the gear. The gear meshes with the toothed plates, and the toothed plates are fixedly connected to the abutment plate.

[0010] Preferably, the valve plate has connecting grooves on both sides, and a sealing ring is provided in the connecting groove. By setting connecting grooves and sealing rings on both sides of the valve plate, and cooperating with the contact groove on the abutment plate to abut against each other, the sealing of the contact part between the edge of the valve plate and the valve body can be guaranteed. Combined with the extrusion deformation sealing method, leakage problems of the valve body can be avoided.

[0011] Preferably, connecting pipes are fixedly connected to both sides of the valve body, the sliding groove communicates with the connecting pipes, the abutment is slidably connected inside the connecting pipes, and a contact groove is provided on one side of the abutment, the contact groove cooperating with the valve plate.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. This utility model is equipped with abutment plate, contact groove, valve plate, protective tube and sealing gasket. By setting two abutment plate structures that cooperate synchronously with the valve plate in the valve body, the valve plate can be provided with contact support during use, ensuring the strength of the valve plate and avoiding deformation of the valve plate due to factors such as liquid flow rate and pressure. In conjunction with the protective tube to block contact with the inner layer of the valve body, the valve body can be prevented from being damaged by corrosive liquids.

[0014] 2. This utility model is equipped with a connecting groove, a sealing ring, a sealing gasket, and a stop plate. By setting connecting grooves and sealing rings on both sides of the valve plate, and cooperating with the contact groove on the stop plate to abut against each other, the sealing of the contact part between the edge of the valve plate and the valve body can be guaranteed. Combined with the extrusion deformation sealing method, leakage problems of the valve body can be avoided. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the novel valve plate structure for the high-strength corrosion-resistant butterfly valve proposed in this utility model.

[0016] Figure 2 This is a schematic diagram of the internal structure of the novel valve plate structure for the high-strength corrosion-resistant butterfly valve proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the abutment structure of the novel valve plate structure for the high-strength corrosion-resistant butterfly valve proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the sealing ring structure of the novel valve plate structure of the high-strength corrosion-resistant butterfly valve proposed in this utility model.

[0019] In the diagram: 1 Valve body, 2 Valve stem, 3 Valve plate, 4 Mounting groove, 5 Snap-fit ​​groove, 6 Protective pipe, 7 Snap-fit ​​block, 8 Sealing gasket, 9 Connecting pipe, 10 Connecting groove, 11 Sealing ring, 12 Gear, 13 Gear plate, 14 Abutment plate, 15 Contact groove. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] Reference Figure 1-4 A novel valve plate structure for a high-strength, corrosion-resistant butterfly valve includes a valve body 1, a valve stem 2 extending through one side of the valve body 1, a valve plate 3 fixedly connected to the side wall of the valve stem 2, protective tubes 6 slidably connected to both sides of the valve body 1, a sealing gasket 8 fitted at one end of the protective tube 6 near the valve plate 3, and connecting grooves 10 opened on both sides of the valve plate 3, with sealing rings 11 provided in the connecting grooves 10.

[0022] The sealing gasket 8 abuts against the abutment plate 14. The valve body 1 and the protective tube 6 are provided with a limiting mechanism for limiting the protective tube 6. The limiting mechanism includes multiple circumferentially arranged snap-fit ​​grooves 5 opened on the inner wall of the valve body 1. Multiple circumferentially arranged snap-fit ​​blocks 7 are fixedly connected to the side wall of the protective tube 6. The snap-fit ​​blocks 7 are slidably connected in the snap-fit ​​grooves 5.

[0023] The inner wall of the valve body 1 has two symmetrically arranged sliding grooves, and a stop plate 14 is slidably connected in the sliding grooves. A drive mechanism for moving the stop plate 14 is provided on one side of the valve body 1. The drive mechanism includes a gear 12 fixedly connected to the side wall of the valve stem 2. Two centrally symmetrical toothed plates 13 are provided on both sides of the gear 12. The gear 12 meshes with the toothed plates 13, and the toothed plates 13 are fixedly connected to the stop plate 14.

[0024] Both sides of the valve body 1 are fixedly connected to the connecting pipes 9, the sliding groove is connected to the connecting pipes 9, the abutment 14 is slidably connected in the connecting pipes 9, and a contact groove 15 is opened on one side of the abutment 14, which cooperates with the valve plate 3.

[0025] When using this utility model, such as Figure 1-4As shown, during use, the protective tube 6 is first installed inside the valve body 1 by sliding and snapping together multiple snap-fit ​​blocks 7 and snap-fit ​​grooves 5. At this time, the end of the protective tube 6 is pressed against the inside of the valve body 1 by the sealing gasket 8, which can ensure the sealing between the protective tube 6 and the valve body 1. By blocking corrosive liquids through the protective tube 6, the inside of the valve body 1 can be prevented from being corroded and affecting its use. At the same time, the protective tube 6 can be easily disassembled, which can facilitate its replacement. During the opening and closing process of the valve plate 3, when the valve stem 2 is rotated, the rotation of the valve stem 2 drives the rotation of the gear 12 inside the connecting pipe 9. Through the meshing of the gear 12 with two centrally symmetrical toothed plates 13, the two... The synchronous relative movement of the side abutment plates 14 means that when the valve plate 3 is open, the abutment plates 14 slide in the sliding groove into the connecting pipe 9. When the valve plate 3 is closed, the gear 12 drives the toothed plate 13 to move in the opposite direction, which in turn drives the relative movement of the two abutment plates 14 to contact and abut against the two sides of the valve plate 3. The contact groove 15 abuts against the valve plate 3, which can increase the support of the valve plate 3 when facing high pressure liquid or high flow rate liquid, and ensure the strength of the valve plate 3. At the same time, the sealing ring 11 seals the contact between the two sides of the valve plate 3 in the connecting groove 10 on the valve plate 3. The sealing between the valve plate 3 and the valve body 1 can be ensured by compression deformation sealing, thus ensuring the sealing strength of the valve plate 3.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel valve plate structure for a high-strength, corrosion-resistant butterfly valve, comprising a valve body (1), characterized in that, A valve stem (2) is provided through one side of the valve body (1), and a valve plate (3) is fixedly connected to the side wall of the valve stem (2). A protective tube (6) is slidably connected to both sides of the valve body (1). A limiting mechanism for limiting the protective tube (6) is provided on the opposite side wall of the valve body (1) and the protective tube (6). Two symmetrically arranged sliding grooves are opened on the inner wall of the valve body (1). A stop plate (14) is slidably connected in the sliding groove. A driving mechanism for moving the stop plate (14) is provided on one side of the valve body (1).

2. The novel valve plate structure of the high-strength corrosion-resistant butterfly valve according to claim 1, characterized in that, The limiting mechanism includes multiple circumferentially arranged snap-fit ​​grooves (5) opened on the inner wall of the valve body (1), and multiple circumferentially arranged snap-fit ​​blocks (7) are fixedly connected to the side wall of the protective tube (6), and the snap-fit ​​blocks (7) are slidably connected in the snap-fit ​​grooves (5).

3. The novel valve plate structure of the high-strength corrosion-resistant butterfly valve according to claim 2, characterized in that, The protective tube (6) is fitted with a sealing gasket (8) at one end near the valve plate (3), and the sealing gasket (8) abuts against the abutment plate (14).

4. The novel valve plate structure of the high-strength corrosion-resistant butterfly valve according to claim 3, characterized in that, The drive mechanism includes a gear (12) fixedly connected to the side wall of the valve stem (2). Two centrally symmetrical toothed plates (13) are provided on both sides of the gear (12). The gear (12) meshes with the toothed plates (13). The toothed plates (13) are fixedly connected to the abutment plate (14).

5. The novel valve plate structure of the high-strength corrosion-resistant butterfly valve according to claim 4, characterized in that, The valve plate (3) has connecting grooves (10) on both sides, and a sealing ring (11) is provided in the connecting groove (10).

6. The novel valve plate structure of the high-strength corrosion-resistant butterfly valve according to claim 5, characterized in that, Both sides of the valve body (1) are fixedly connected to the connecting pipe (9), the sliding groove is connected to the connecting pipe (9), the abutment (14) is slidably connected in the connecting pipe (9), and a contact groove (15) is opened on one side of the abutment (14), the contact groove (15) cooperates with the valve plate (3).

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