Large-caliber three-eccentric center butterfly valve

Abstract

The utility model discloses a large-caliber three-eccentric center butterfly valve which comprises a supporting frame and a three-eccentric center butterfly valve body installed in the supporting frame. The stabilizing mechanism is arranged at the bottom of the inner cavity of the supporting frame and used for conducting displacement adjustment on the three-eccentric center butterfly valve body when the three-eccentric center butterfly valve body is installed. Through the arrangement of the stabilizing mechanism, when the three-eccentric center butterfly valve body is installed, the three-eccentric center butterfly valve body is hoisted in the supporting frame and installed at the top of the stabilizing mechanism, and in the installation process of the three-eccentric center butterfly valve body, the servo motor can drive the two-way screw to rotate; the two movable seats are driven to move inwards synchronously through threaded connection of the two-way screw and the movable seats, so that the two movable seats jack up the stabilizing mechanism through the shear fork rod, and the mounting height of the three-eccentric center butterfly valve body can be adjusted according to mounting requirements while the mounting stability of the three-eccentric center butterfly valve body is kept.

Description

Technical Field

[0001] This utility model relates to the technical field of triple eccentric butterfly valves, specifically a large-diameter triple eccentric butterfly valve. Background Technology

[0002] Large-diameter triple-eccentric butterfly valves belong to the butterfly valve category. There is no strict and unified standard for "large-diameter". In general, in industry, butterfly valves with a nominal diameter greater than DN600 (600 mm) are usually considered large-diameter butterfly valves. Triple-eccentric butterfly valves are valves in which the valve stem axis is offset from both the valve plate center and the body center, and the valve seat rotation axis is at a certain angle to the valve body channel axis.

[0003] However, existing technologies still have significant shortcomings, such as:

[0004] In the existing technology, butterfly valves with a nominal diameter greater than DN600 (i.e., 600 mm) are generally considered large-diameter. Large-diameter triple offset butterfly valves typically have a nominal diameter of DN800, DN1000, or even larger, and some special applications may have specifications of DN2000 and above. Therefore, due to the excessive size of large-diameter triple offset butterfly valves, not only is hoisting equipment required for installation, but it is also difficult to maintain their stability during hoisting, making them prone to deviations during installation. Utility Model Content

[0005] The purpose of this invention is to provide a large-diameter triple eccentric butterfly valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a large-diameter triple eccentric butterfly valve, comprising:

[0007] Support frame, and the body of the triple eccentric butterfly valve installed inside it;

[0008] A stabilizing mechanism, located at the bottom of the inner cavity of the support frame, is used for displacement adjustment of the triple eccentric butterfly valve body during installation. It includes two slide rails fixedly installed at the bottom of the inner cavity of the support frame, with a support plate slidably mounted on the top of the slide rails. A lifting component for adjusting the height of the triple eccentric butterfly valve body is mounted on the top of the support plate. Offset components for moving the triple eccentric butterfly valve body are installed through the top of both sides of the support frame.

[0009] Preferably, the lifting assembly includes a support base disposed on the top of the support plate, and movable seats are slidably mounted on both sides of the top of the support plate. A plurality of scissor rods are hinged to the front and rear sides of the top of the two movable seats, and the ends of the plurality of scissor rods away from the movable seats are hinged to the bottom of the support base. A servo motor is mounted on one side of the top of the support plate, and a bidirectional screw is fixedly mounted on the output end of the servo motor. The end of the bidirectional screw away from the servo motor passes through the two movable seats and is threadedly connected to them.

[0010] Preferably, each of the scissor bars has a strip-shaped hole on its surface, wherein a central shaft is installed inside every two strip-shaped holes, and the strip-shaped holes and the central shaft are slidably connected.

[0011] Preferably, the offset assembly includes two rectangular mounting holes on the top of both sides of the support frame. A mounting plate is slidably installed inside the rectangular mounting holes. A hydraulic rod is installed through the surface of the mounting plate. An anti-slip plate is fixedly installed at the telescopic end of the hydraulic rod. The side of the anti-slip plate away from the hydraulic rod is in contact with the side of the triple eccentric butterfly valve body.

[0012] Preferably, the top of the support base is provided with a placement groove, and a limit rod is fixedly installed around the inside of the placement groove. The shape of the placement groove is the same as the shape of the bottom of the triple eccentric butterfly valve body, and the top of the limit rod penetrates through the triple eccentric butterfly valve body and is inserted into it.

[0013] Preferably, two first guide rails are fixedly installed on the top of the support plate, and sliding grooves adapted to the first guide rails are opened on both sides of the bottom of the movable seat. The movable seat and the support plate are slidably connected through the first guide rails.

[0014] Preferably, a second guide rail is fixedly installed on both sides inside the rectangular mounting hole, and a limit groove is opened on both sides of the mounting plate, with the second guide rail and the limit groove being slidably connected.

[0015] Preferably, a fixing plate is fixedly installed on both sides of the support frame, and a positioning bolt is installed through the surface of the fixing plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Utilizing the stabilizing mechanism, when the triple eccentric butterfly valve body is installed, it is hoisted inside the support frame and installed on top of the stabilizing mechanism. During the installation process, the servo motor drives the bidirectional screw to rotate, and the threaded connection between the bidirectional screw and the moving seat drives the two moving seats to move inward synchronously. The two moving seats lift the stabilizing mechanism through the scissor bar, thereby maintaining the installation stability of the triple eccentric butterfly valve body while allowing the installation height of the triple eccentric butterfly valve body to be adjusted according to installation requirements.

[0018] 2. When the triple eccentric butterfly valve body is installed on top of the stabilizing mechanism, the two hydraulic rods work to drive the anti-slip plate to move and fit against the side wall of the triple eccentric butterfly valve body. This can maintain the stability of the triple eccentric butterfly valve body while using the extension and retraction characteristics of the hydraulic rods to drive the triple eccentric butterfly valve body to move laterally inside the support frame, so as to adjust the installation position of the triple eccentric butterfly valve body according to the installation requirements.

[0019] 3. By utilizing the cooperation between the second guide rail and the limiting groove, when the support seat drives the triple eccentric butterfly valve body to rise and fall, it can use the connection between the anti-slip plate and the triple eccentric butterfly valve body to drive the mounting plate to slide inside the rectangular mounting hole, so that the anti-slip plate can always fit in contact with the triple eccentric butterfly valve body, further improving the stability of the triple eccentric butterfly valve body during installation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the stabilizing mechanism structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the lifting component structure of this utility model;

[0023] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0024] Figure 5 This is a schematic diagram of the offset component structure of this utility model.

[0025] In the diagram: 1. Support frame; 2. Triple eccentric butterfly valve body; 3. Stabilizing mechanism; 31. Slide rail; 32. Support plate; 33. Lifting assembly; 331. Support base; 332. Moving base; 333. Scissor bar; 334. Servo motor; 335. Bidirectional screw; 336. Strip hole; 337. Central shaft; 338. Placement slot; 339. Limiting rod; 3301. First guide rail; 34. Offset assembly; 341. Rectangular mounting hole; 342. Mounting plate; 343. Hydraulic rod; 344. Anti-slip plate; 345. Second guide rail; 346. Limiting slot; 4. Fixing plate; 5. Positioning bolt. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 This utility model provides a technical solution: a large-diameter triple eccentric butterfly valve, comprising:

[0028] Support frame 1, and the triple eccentric butterfly valve body 2 installed inside it;

[0029] The stabilizing mechanism 3 is located at the bottom of the inner cavity of the support frame 1 for displacement adjustment of the triple eccentric butterfly valve body 2 during installation. It includes two slide rails 31 fixedly installed at the bottom of the inner cavity of the support frame 1. A support plate 32 is slidably installed on the top of the slide rails 31. A lifting component 33 for adjusting the height of the triple eccentric butterfly valve body 2 is installed on the top of the support plate 32. Offset components 34 for moving the triple eccentric butterfly valve body 2 are installed through the top of both sides of the support frame 1.

[0030] Reference Figure 2 as well as Figure 3 As shown, the lifting assembly 33 includes a support base 331 disposed on the top of the support plate 32. Movable seats 332 are slidably mounted on both sides of the top of the support plate 32. Several scissor rods 333 are hinged to the front and rear sides of the top of the two movable seats 332. The ends of the several scissor rods 333 away from the movable seats 332 are hinged to the bottom of the support base 331. A servo motor 334 is mounted on one side of the top of the support plate 32. A bidirectional screw 335 is fixedly mounted on the output end of the servo motor 334. The end of the bidirectional screw 335 away from the servo motor 334 passes through the two movable seats 332 and is threadedly connected to them.

[0031] In this embodiment, during the installation of the triple eccentric butterfly valve body 2, the servo motor 334 can drive the bidirectional screw 335 to rotate, and the threaded connection between the bidirectional screw 335 and the moving seat 332 drives the two moving seats 332 to move inward synchronously, so that the two moving seats 332 lift the stabilizing mechanism 3 through the scissor bar 333. In this way, while maintaining the installation stability of the triple eccentric butterfly valve body 2, the installation height of the triple eccentric butterfly valve body 2 can be adjusted according to the installation requirements.

[0032] Reference Figure 3 as well as Figure 4 As shown, each of the scissor bars 333 has a strip-shaped hole 336 on its surface. A central shaft 337 is installed inside every two strip-shaped holes 336. The strip-shaped holes 336 and the central shaft 337 are slidably connected.

[0033] In this embodiment, during the movement of the two movable seats 332, the scissor bar 333 can drive the strip hole 336 to move synchronously, so that the central shaft 337 can slide inside the strip hole 336. While keeping the scissor bar 333 lifting the support seat 331, the central shaft 337 is prevented from being fixed and affecting the scissor bar 333's scissor characteristics.

[0034] Reference Figure 2 as well as Figure 5 As shown, the offset assembly 34 includes two rectangular mounting holes 341 opened on the top of both sides of the support frame 1. A mounting plate 342 is slidably installed inside the rectangular mounting holes 341. A hydraulic rod 343 is installed through the surface of the mounting plate 342. An anti-slip plate 344 is fixedly installed at the telescopic end of the hydraulic rod 343. The side of the anti-slip plate 344 away from the hydraulic rod 343 is in contact with the side of the triple eccentric butterfly valve body 2.

[0035] In this embodiment, when the triple eccentric butterfly valve body 2 is installed on top of the stabilizing mechanism 3, the two hydraulic rods 343 work to drive the anti-slip plate 344 to move and fit against the side wall of the triple eccentric butterfly valve body 2. While maintaining the stability of the triple eccentric butterfly valve body 2, the extension and retraction characteristics of the hydraulic rods 343 can drive the triple eccentric butterfly valve body 2 to move laterally inside the support frame 1, so as to adjust the installation position of the triple eccentric butterfly valve body 2 according to the installation requirements.

[0036] Reference Figure 2 as well as Figure 3 As shown, the top of the support base 331 is provided with a placement groove 338, and a limit rod 339 is fixedly installed around the inside of the placement groove 338. The shape of the placement groove 338 is the same as the shape of the bottom of the triple eccentric butterfly valve body 2, and the top of the limit rod 339 passes through the triple eccentric butterfly valve body 2 and is inserted into it.

[0037] In this embodiment, when the triple eccentric butterfly valve body 2 is hoisted on top of the stabilizing mechanism 3, the bottom of the triple eccentric butterfly valve body 2 can be installed inside the placement groove 338 and limited by the limiting rod 339, so that the stability of the triple eccentric butterfly valve body 2 can be further improved during installation.

[0038] Reference Figure 3 as well as Figure 4 As shown, two first guide rails 3301 are fixedly installed on the top of the support plate 32, and sliding grooves adapted to the first guide rails 3301 are opened on both sides of the bottom of the movable seat 332. The movable seat 332 and the support plate 32 are slidably connected through the first guide rails 3301.

[0039] In this embodiment, the movable seat 332 can slide on the top of the support plate 32 so that the support seat 331 can be lifted by using the scissor bar 333.

[0040] Reference Figure 5 As shown, a second guide rail 345 is fixedly installed on both sides inside the rectangular mounting hole 341, and a limit groove 346 is opened on both sides of the mounting plate 342. The second guide rail 345 and the limit groove 346 are slidably connected.

[0041] In this embodiment, the sliding stability of the mounting plate 342 can be maintained when the hydraulic rod 343 and the anti-slip plate 344 are raised and lowered, thereby further improving the stability of the triple eccentric butterfly valve body 2 during installation.

[0042] Reference Figure 1 As shown, fixing plates 4 are fixedly installed on both sides of the support frame 1, and positioning bolts 5 are installed through the surface of the fixing plates 4.

[0043] In this embodiment, the stability of the support frame 1 can be further improved, and the support frame 1 can be prevented from shifting during the hoisting of the triple eccentric butterfly valve body 2, which would affect the stability of the triple eccentric butterfly valve body 2 when it is placed.

[0044] Working principle: The triple eccentric butterfly valve body 2 is hoisted inside the support frame 1 and installed on top of the stabilizing mechanism 3. During installation, the servo motor 334 drives the bidirectional screw 335 to rotate, and the threaded connection between the bidirectional screw 335 and the moving seat 332 drives the two moving seats 332 to move inward synchronously, so that the two moving seats 332 lift the stabilizing mechanism 3 through the scissor lever 333. When the triple eccentric butterfly valve body 2 is installed on top of the stabilizing mechanism 3, the two hydraulic rods 343 work to drive the anti-slip plate 344 to move and fit against the side wall of the triple eccentric butterfly valve body 2. While maintaining the stability of the triple eccentric butterfly valve body 2, the extension and retraction characteristics of the hydraulic rods 343 can drive the triple eccentric butterfly valve body 2 to move laterally inside the support frame 1. This allows the triple eccentric butterfly valve body 2 to maintain its overall stability during installation, while facilitating the adjustment of its height and position, making it convenient for operators to install.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large-diameter triple eccentric butterfly valve, characterized in that, include: Support frame (1), and the triple eccentric butterfly valve body (2) installed inside it; A stabilizing mechanism (3) is located at the bottom of the inner cavity of the support frame (1) for adjusting the position of the triple eccentric butterfly valve body (2) during installation. It includes two slide rails (31) fixedly installed at the bottom of the inner cavity of the support frame (1). A support plate (32) is slidably installed on the top of the slide rails (31). A lifting component (33) for adjusting the height of the triple eccentric butterfly valve body (2) is installed on the top of the support plate (32). An offset component (34) for moving the triple eccentric butterfly valve body (2) is installed through the top of both sides of the support frame (1).

2. The large-diameter triple eccentric butterfly valve according to claim 1, characterized in that: The lifting assembly (33) includes a support base (331) disposed on the top of the support plate (32). Movable seats (332) are slidably mounted on both sides of the top of the support plate (32). Several scissor rods (333) are hinged to the front and rear sides of the top of the two movable seats (332). The ends of the several scissor rods (333) away from the movable seats (332) are hinged to the bottom of the support base (331). A servo motor (334) is mounted on one side of the top of the support plate (32). A bidirectional screw (335) is fixedly mounted on the output end of the servo motor (334). The end of the bidirectional screw (335) away from the servo motor (334) passes through the two movable seats (332) and is threadedly connected to them.

3. A large-diameter triple eccentric butterfly valve according to claim 2, characterized in that: Each of the scissor lifts (333) has a strip-shaped hole (336) on its surface. A central shaft (337) is installed inside every two strip-shaped holes (336), and the strip-shaped holes (336) and the central shaft (337) are slidably connected.

4. A large-diameter triple eccentric butterfly valve according to claim 1, characterized in that: The offset assembly (34) includes two rectangular mounting holes (341) on the top of both sides of the support frame (1). A mounting plate (342) is slidably installed inside the rectangular mounting holes (341). A hydraulic rod (343) is installed through the surface of the mounting plate (342). An anti-slip plate (344) is fixedly installed at the telescopic end of the hydraulic rod (343). The side of the anti-slip plate (344) away from the hydraulic rod (343) is in contact with the side of the triple eccentric butterfly valve body (2).

5. A large-diameter triple eccentric butterfly valve according to claim 3, characterized in that: The top of the support base (331) is provided with a placement groove (338), and a limit rod (339) is fixedly installed around the inside of the placement groove (338). The shape of the placement groove (338) is the same as the shape of the bottom of the triple eccentric butterfly valve body (2), and the top of the limit rod (339) passes through the triple eccentric butterfly valve body (2) and is inserted into it.

6. A large-diameter triple eccentric butterfly valve according to claim 2, characterized in that: The top of the support plate (32) is fixedly installed with two first guide rails (3301). The bottom sides of the movable seat (332) are provided with sliding grooves that are compatible with the first guide rails (3301). The movable seat (332) and the support plate (32) are slidably connected through the first guide rails (3301).

7. A large-diameter triple eccentric butterfly valve according to claim 4, characterized in that: The rectangular mounting hole (341) has a second guide rail (345) fixedly installed on both sides. The mounting plate (342) has a limit groove (346) on both sides. The second guide rail (345) and the limit groove (346) are slidably connected.

8. A large-diameter triple eccentric butterfly valve according to claim 1, characterized in that: The support frame (1) is fixedly installed on both sides with fixing plates (4), and positioning bolts (5) are installed through the surface of the fixing plates (4).

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