Turbine butterfly valve

Abstract

The utility model relates to the technical field of valves, in particular to a turbine butterfly valve which comprises a valve body and a valve plate, a valve seat assembly is installed on the surface of the valve body, the valve plate is rotatably arranged on the inner side of the valve seat assembly, the valve seat assembly comprises a front valve seat and a rear valve seat, a tenon is fixedly connected to the back face of the front valve seat, and the tenon is fixedly connected to the back face of the rear valve seat. A through hole for the tenon to penetrate through is formed in the surface of the rear valve seat in a matched mode, the front valve seat, the tenon and the rear valve seat are all made of rubber materials, a plurality of evenly-distributed pull rings are fixedly connected to the surface of the tenon, and the tenon can be in lap joint with the surface of the rear valve seat after penetrating through the through hole. The utility model aims to solve the problem that a large amount of manpower and material resources are consumed as the valve seat of the traditional butterfly valve generally adopts an integrally formed structure and the valve needs to be completely detached from a pipeline system when the cleaning or replacement requirement is faced.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically a turbine butterfly valve. Background Technology

[0002] A turbine butterfly valve is a type of valve that regulates fluid flow by controlling the rotation of a disc through a turbine drive device. Its core structure includes a valve body, a disc-shaped disc, and a turbine drive mechanism. The disc can be fully opened or fully closed by rotating 90° around the valve shaft. The turbine drive device adopts a worm gear design, which can significantly reduce torque when operated by handwheel. In industrial pipeline systems, butterfly valves are key fluid control devices.

[0003] Traditional butterfly valve seats generally adopt an integrated molding structure. When impurities accumulate or wear occurs on the valve seat surface, and cleaning or replacement is required, the valve must be completely disassembled from the pipeline system, and the core components such as the valve body, valve stem, and valve plate must be completely disassembled. This process involves complex disassembly procedures for multiple components, requiring maintenance personnel to disassemble the valve body and valve stem connection components simultaneously during operation, which consumes a lot of manpower and resources. Utility Model Content

[0004] The purpose of this utility model is to provide a turbine butterfly valve to solve the problem that traditional butterfly valves generally adopt an integrated molding structure for the valve seat, which requires the valve to be completely disassembled from the pipeline system when cleaning or replacement is needed, consuming a lot of manpower and resources.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A turbine butterfly valve includes a valve body and a valve plate. A valve seat assembly is mounted on the surface of the valve body. The valve plate is rotatably disposed inside the valve seat assembly. The valve seat assembly includes a front valve seat and a rear valve seat. A tenon is fixedly connected to the back of the front valve seat. A through hole for the tenon to pass through is provided on the surface of the rear valve seat. The front valve seat, the tenon, and the rear valve seat are all made of rubber. Multiple evenly distributed pull rings are fixedly connected to the surface of the tenon.

[0007] Preferably, the tenon can overlap the surface of the rear valve seat after passing through the through hole.

[0008] Preferably, the front valve seat and the rear valve seat are provided with a plurality of evenly distributed positioning protrusions on the surfaces facing the valve body, and the surface of the valve body is provided with corresponding positioning grooves for the positioning protrusions to be embedded.

[0009] Preferably, a reduction gearbox is mounted on the top surface of the valve body, a handwheel is rotatably connected to the surface of the reduction gearbox, and a valve stem is pivotally connected to the surface of the valve body. The handwheel drives the valve stem to rotate through the gear transmission mechanism of the reduction gearbox, and the valve stem passes through the valve seat assembly and is fixedly connected to the valve plate.

[0010] Preferably, the front valve seat and the rear valve seat are respectively provided with semi-cylindrical grooves on their mating surfaces. After the two are mated, they form a through hole for the valve stem to pass through, and the inner ring of the through hole fits with the surface of the valve stem.

[0011] Preferably, the valve body has two symmetrically arranged fixing lugs on its surface, and each fixing lug has multiple threaded holes evenly formed on its surface. The front valve seat and the rear valve seat have through mounting holes at corresponding positions on their surfaces.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. When impurities or wear adhere to the valve seat surface, there is no need to disassemble other internal parts of the valve body, such as the valve stem or valve plate. Only the front and rear valve seats need to be removed, which facilitates quick cleaning or replacement of the front and rear valve seats, reduces maintenance costs, and meets the design requirements of disassembly-free maintenance.

[0014] 2. When the tenon is directly inserted, the high coefficient of friction of the rubber surface makes it difficult to accurately align manually. As an exposed traction structure, the pull ring can be pulled by tools such as hooks to pull the tenon from the rear valve seat side through the through hole, reducing the difficulty of installation. Attached Figure Description

[0015] Figure 1 This is a front view of the entire utility model;

[0016] Figure 2 This is a schematic diagram of the valve body of this utility model;

[0017] Figure 3 This is a schematic diagram of the right side structure of the valve seat assembly of this utility model;

[0018] Figure 4 This is a schematic diagram of the rear structure of the valve seat assembly of this utility model;

[0019] Figure 5 This is a schematic diagram of the rear structure of the front valve seat of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the rear valve seat of this utility model;

[0021] Figure 7 This is a schematic diagram of the connection between the valve body and the fixed lug plate of this utility model.

[0022] In the diagram: 1. Valve body; 2. Gearbox; 3. Handwheel; 4. Front valve seat; 5. Valve plate; 6. Tenon; 7. Through hole; 8. Rear valve seat; 9. Pull ring; 10. Fixing ear plate; 11. Threaded hole; 12. Positioning protrusion; 13. Positioning groove. Detailed Implementation

[0023] 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.

[0024] Example 1, please refer to Figures 1 to 6 This utility model provides a technical solution.

[0025] A turbine butterfly valve includes a valve body 1 and a valve plate 5. A valve seat assembly is mounted on the surface of the valve body 1. The valve plate 5 is rotatably disposed inside the valve seat assembly. The valve seat assembly includes a front valve seat 4 and a rear valve seat 8, which are connected by an interlocking structure. A tenon 6 is fixedly connected to the back of the front valve seat 4. A through hole 7 is provided on the surface of the rear valve seat 8 for the tenon 6 to pass through. After passing through the through hole 7, the tenon 6 can overlap the surface of the rear valve seat 8, restricting the return movement of the tenon 6. For example, the cross-section of the tenon 6 is trapezoidal, and the width of the short side of the trapezoidal cross-section of the tenon 6 is smaller than the opening size of the through hole 7, while the width of the long side is larger than the opening size of the through hole 7. With this design, when the front valve seat 4 and the rear valve seat 8 are mated, the short side of the tenon 6 is easily inserted into the through hole 7. The long side of the tenon 6 is designed to overlap the surface of the rear valve seat 8 after the tenon 6 passes through the through hole 7, forming an anti-disengagement stop and restricting the back movement of the front valve seat 4. The front valve seat 4, the tenon 6, and the rear valve seat 8 are all made of rubber. Multiple evenly distributed pull rings 9 are fixedly connected to the surface of the tenon 6. Since the front valve seat 4, the tenon 6, and the rear valve seat 8 are all made of rubber, the friction is relatively large when they are connected and pass through the through hole 7. By setting the pull rings 9, it is easy to use tools such as hooks to pull the tenon 6 from the side of the rear valve seat 8 to assist in completing the insertion and positioning. When the valve plate 5 and the valve seat assembly are covered with impurities due to long-term use, the front valve seat 4 and the rear valve seat 8 can be directly disassembled. The components can be cleaned or the front valve seat 4 and the rear valve seat 8 can be replaced without disassembling the entire butterfly valve, effectively avoiding the sealing failure problem caused by media deposition.

[0026] The front valve seat 4 and the rear valve seat 8 are provided with multiple evenly distributed positioning protrusions 12 on the surface facing the valve body 1. The surface of the valve body 1 is provided with positioning grooves 13 for the positioning protrusions 12 to be embedded. The matching structure of the positioning protrusions 12 and the positioning grooves 13 facilitates the positioning of the front valve seat 4 and the rear valve seat 8.

[0027] A reduction gearbox 2 is mounted on the top surface of the valve body 1. A handwheel 3 is rotatably connected to the surface of the reduction gearbox 2. A valve stem is pivotally connected to the surface of the valve body 1. The handwheel 3 drives the valve stem to rotate through the gear transmission mechanism of the reduction gearbox 2. The valve stem passes through the valve seat assembly and is fixedly connected to the valve plate 5, thereby driving the valve plate 5 to rotate to achieve opening and closing. This transmission structure is consistent with the standard design of existing turbine butterfly valves. Those skilled in the art can refer to the well-known technology, which will not be described in detail here.

[0028] The front valve seat 4 and the rear valve seat 8 are respectively provided with semi-cylindrical grooves on their mating surfaces. After the two are mated, they form a through hole for the valve stem to pass through, and the inner ring of the through hole fits with the surface of the valve stem.

[0029] Example 2, please refer to Figure 7 Based on Embodiment 1, in order to increase the tightness of the connection between the front valve seat 4, the rear valve seat 8 and the valve body 1, two symmetrically arranged fixing lugs 10 are provided on the surface of the valve body 1. Each fixing lug 10 has multiple threaded holes 11 evenly opened on its surface. The front valve seat 4 and the rear valve seat 8 have through mounting holes at corresponding positions. By passing bolts through the mounting holes on the surfaces of the front valve seat 4 and the rear valve seat 8, and then threading them with the fixing lugs 10 through the threaded holes 11, the front valve seat 4 and the rear valve seat 8 are fixed to the surface of the valve body 1.

[0030] The specific solution is as follows: By rotating the handwheel 3 with uniform force, the handwheel 3 transmits the rotational power to the valve stem through the gear transmission mechanism in the reduction gearbox 2. The valve stem starts to rotate and drives the valve plate 5 to rotate synchronously. As the valve plate 5 rotates, it gradually separates from the front valve seat 4 and the rear valve seat 8 to form a medium flow channel. The handwheel 3 is rotated continuously until the valve plate 5 rotates to the fully open position.

[0031] Valve seat assembly disassembly operation: Using appropriate tools, loosen and unscrew the bolts that connect the mounting through holes of the front valve seat 4 and the rear valve seat 8 to the threaded holes 11 of the fixing ear plate 10. Remove all the bolts, and then the tenon 6 can be directly removed from the through hole 7 of the rear valve seat 8, thereby separating the front valve seat 4 and the rear valve seat 8. Check the surface of the valve plate 5 and the valve seat assembly for any impurities. If cleaning is required, use appropriate cleaning tools and detergents to clean the valve plate 5, the front valve seat 4, and the rear valve seat 8. If replacement is required, prepare new front valve seat 4 and rear valve seat 8.

[0032] Valve seat assembly installation operation: First, place the cleaned or new front valve seat 4 and rear valve seat 8 on the surface of the valve body 1 respectively. Align the tenon 6 of the front valve seat 4 with the through hole 7 of the rear valve seat 8. Since the cross-section of the tenon 6 is trapezoidal, the width of the short side is smaller than the opening size of the through hole 7, and the width of the long side is larger than the opening size of the through hole 7. Slowly push the front valve seat 4 so that the short side of the tenon 6 first inserts into the through hole 7 and gradually passes through the through hole 7 until the long side of the tenon 6 overlaps the surface of the rear valve seat 8, forming an anti-disengagement stop. When the tenon passes through the through hole 7, the friction is relatively large. At this time, use a hook or other tool to hook the pull ring 9 on the surface of the tenon 6 and pull it evenly from one side of the rear valve seat 8 to ensure that the tenon 6 accurately passes through the through hole 7 and is positioned.

[0033] After confirming that the front valve seat 4 and the rear valve seat 8 are properly aligned, pass the bolts through the mounting holes on the surfaces of the front valve seat 4 and the rear valve seat 8, and screw them into the threaded holes 11 of the fixing ear plate 10. Tighten the bolts evenly to fix the front valve seat 4 and the rear valve seat 8 to the surface of the valve body 1, ensuring a tight connection.

[0034] 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 turbine butterfly valve, comprising a valve body (1) and a valve plate (5), characterized in that: The valve body (1) is equipped with a valve seat assembly. The valve plate (5) is rotatably disposed inside the valve seat assembly. The valve seat assembly includes a front valve seat (4) and a rear valve seat (8). A tenon (6) is fixedly connected to the back of the front valve seat (4). A through hole (7) is provided on the surface of the rear valve seat (8) for the tenon (6) to pass through. The front valve seat (4), the tenon (6), and the rear valve seat (8) are all made of rubber. A plurality of evenly distributed pull rings (9) are fixedly connected to the surface of the tenon (6).

2. The turbine butterfly valve according to claim 1, characterized in that, The tenon (6) can be attached to the surface of the rear valve seat (8) after passing through the through hole (7).

3. The turbine butterfly valve according to claim 1, characterized in that, The front valve seat (4) and the rear valve seat (8) are provided with a plurality of evenly distributed positioning protrusions (12) on the surface facing the valve body (1), and the surface of the valve body (1) is provided with a corresponding positioning groove (13) for the positioning protrusions (12) to be inlaid.

4. The turbine butterfly valve according to claim 1, characterized in that, A gearbox (2) is installed on the top surface of the valve body (1). A handwheel (3) is rotatably connected to the surface of the gearbox (2). A valve stem is pivotally connected to the surface of the valve body (1). The handwheel (3) drives the valve stem to rotate through the gear transmission mechanism of the gearbox (2). The valve stem passes through the valve seat assembly and is fixedly connected to the valve plate (5).

5. A turbine butterfly valve according to claim 4, characterized in that, The front valve seat (4) and the rear valve seat (8) are respectively provided with semi-cylindrical grooves. After they are joined together, they form a through hole for the valve stem to pass through, and the inner ring of the through hole fits with the surface of the valve stem.

6. The turbine butterfly valve according to claim 1, characterized in that, The surface of the valve body (1) is provided with two symmetrically arranged fixed ear plates (10), and each fixed ear plate (10) is provided with multiple threaded holes (11) evenly distributed on its surface. The surfaces of the front valve seat (4) and the rear valve seat (8) are provided with through mounting holes at corresponding positions.

Images