CN219282450U

CN219282450U - Valve plate fixing structure convenient to detach

Info

Publication number: CN219282450U
Application number: CN202320174297.8U
Authority: CN
Inventors: 许义兵; 周曦
Original assignee: Wuxi Smart Auto Control Engineering Co Ltd
Current assignee: Wuxi Smart Auto Control Engineering Co Ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-06-30
Anticipated expiration: 2033-02-09

Abstract

The utility model relates to a valve plate fixing structure convenient to detach, which comprises a valve body, a valve rod, a valve plate and a fixing piece, wherein the valve rod is arranged in the valve body, the valve rod is provided with the valve plate, the upper end and the lower end of the valve plate are respectively provided with a connecting plate, and the valve plate is connected with the valve rod by the connecting plates; the connecting plates are respectively provided with a fixing hole, fixing pieces are respectively arranged in the fixing holes, the valve rod is provided with an inclined surface, the fixing pieces are provided with fixing surfaces, and the fixing surfaces can be matched with the inclined surfaces; the fixing piece is connected with the connecting plate by using a fixing screw. The fixing piece is fixed by the screw, and the fixing piece can be fastened by the fixing screw and the anti-loose gasket, so that the fixing piece is convenient to install and detach, and welding treatment is not needed, the risk of falling off of the fixing piece is reduced, and the convenience of installing and detaching the butterfly valve is improved; the utility model improves the sealing strength of the valve plate and avoids the possibility of internal leakage.

Description

Valve plate fixing structure convenient to detach

Technical Field

The utility model belongs to the technical field of fluid valves, and relates to a valve plate fixing structure convenient to detach.

Background

Because the butterfly valve has the characteristics of simple structure, low cost and the like, the butterfly valve is widely applied to various fields of petroleum, chemical industry, water and electricity and the like at present; in the existing butterfly valve products, a valve shaft and a valve plate inside the butterfly valve are usually fixedly connected through a pin shaft. However, the space of the inner cavity of the valve body of the part of small-caliber butterfly valve is small, the cross pin mode is inconvenient to install and disassemble, and even if the operating space exists, the assembly precision is difficult to meet the requirement; in addition, the type of the pin hole in the vertical pin mode is a through hole, and the structure is easy to reduce the overall structural strength of the butterfly valve, so that the possibility of internal leakage of the valve is caused; moreover, no matter the transverse pin or the vertical pin is adopted, spot welding is adopted to prevent loosening and fix after the assembly is completed, so that the risk of falling off under the working conditions of high frequency, high pressure and the like is avoided, the valve is extremely difficult to disassemble or maintain, and the maintenance cost is further increased.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, solve the problem that the assembly, disassembly and maintenance of a butterfly valve plate are inconvenient, and provide a valve plate fixing structure convenient to disassemble.

In order to achieve the above purpose, the following technical scheme is adopted:

the valve plate fixing structure convenient to detach comprises a valve body, a valve rod, a valve plate and a fixing piece, wherein the valve rod is arranged in the valve body, the valve rod is provided with the valve plate, the upper end and the lower end of the valve plate are respectively provided with a connecting plate, and the valve plate is connected with the valve rod by the connecting plates; the connecting plates are respectively provided with a fixing hole, fixing pieces are respectively arranged in the fixing holes, the valve rod is provided with an inclined surface, the fixing pieces are provided with fixing surfaces, and the fixing surfaces can be matched with the inclined surfaces; the fixing piece is connected with the connecting plate by using a fixing screw.

Preferably, valve rod holes are respectively formed in the connecting plates, and the valve rods are arranged in the valve rod holes.

Preferably, one end of the fixing piece is provided with a connecting arc plate, and the fixing screw is in threaded connection with the connecting arc plate.

Preferably, a locking gasket is arranged between the fixing screw and the connecting plate, a gasket groove is formed in the connecting plate, and the locking gasket is positioned in the gasket groove.

Preferably, the inclination angle between the fixing surface and the central axis of the fixing piece is 1-3 degrees.

Preferably, the inclination between the inclined surface on the valve rod and the key groove distribution line on the valve rod is 4-6 degrees.

Preferably, the fixing hole is a blind hole.

Compared with the prior art, the utility model has the following advantages:

the fixing piece is fixed by the screw, and the fixing piece can be fastened by the fixing screw and the anti-loose gasket, so that the fixing piece is convenient to install and detach, and welding treatment is not needed, the risk of falling off of the fixing piece is reduced, and the convenience of installing and detaching the butterfly valve is improved; the fixing hole is a blind hole, so that the valve plate does not need to be penetrated, the sealing strength of the valve plate is improved, and the possibility of internal leakage is avoided; in addition, the valve shaft also provides a pre-tightening force with pressure for the valve in the closing state, so that the closing performance is better.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural view of the present utility model.

Fig. 3 is a partial enlarged view at I in fig. 2.

Fig. 4 is a schematic cross-sectional view of the utility model at the inclined surface of the valve stem.

In the figure: 1. a valve body; 2. a valve stem; 3. a valve plate; 4. a fixing member; 5. a connecting plate; 6. a fixing hole; 7. an inclined surface; 8. a fixing surface; 9. a fixing screw; 10. connecting an arc plate; 11. a locking gasket; 12. a gasket groove; 13. a valve stem bore; 14. and (5) distributing lines for the key grooves.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

As shown in fig. 1-4, the valve plate fixing structure convenient to detach comprises a valve body 1, a valve rod 2, a valve plate 3 and a fixing piece 4, wherein the valve rod 2 is arranged in the valve body 1, the valve rod 2 is provided with the valve plate 3, the valve rod 2 is used for controlling the valve plate 3 to rotate, and the valve plate 3 can cut off and seal the valve body 1;

the upper and lower both ends of valve plate 3 are provided with connecting plate 5 respectively, valve plate 3 utilizes connecting plate 5 to be connected with valve rod 2, utilizes screw fixed connection between connecting plate 5 and the valve plate 3.

The connecting plates 5 are respectively provided with a fixing hole 6, the fixing holes 6 are respectively provided with a fixing piece 4, and the fixing pieces 4 can prevent radial rotation between the connecting plates 5 and the valve rod 2;

the valve rod 2 is provided with an inclined surface 7, the fixing piece 4 is provided with a fixing surface 8, the fixing surface 8 can be matched with the inclined surface 7, and the fixing surface 8 and the inclined surface 7 are matched so that the fixing piece 4 and the valve rod 2 cannot rotate; the fixing piece 4 is connected with the connecting plate 5 by a fixing screw 9.

Further, the connecting plates 5 are respectively provided with a valve rod hole 13, the valve rod 2 is arranged in the valve rod holes 13, and the connecting plates 5 are sleeved outside the valve rod 2 by utilizing the valve rod holes 13.

Further, one end of the fixing piece 4 is provided with a connecting arc plate 10, the fixing screw 9 is screwed in the connecting arc plate 10, and an internal thread which can be matched with the fixing screw 9 is arranged in the connecting arc plate 10.

Further, a locking gasket 11 is arranged between the fixing screw 9 and the connecting plate 5, a gasket groove 12 is formed in the connecting plate 5, the locking gasket 11 is located in the gasket groove 12, and the locking gasket 11 enables the fixing screw 9 to be firmly connected.

Further, the inclination angle between the fixing surface 8 and the central axis of the fixing member 4 is 1-3 °.

Further, the inclination between the inclined surface 7 on the valve rod 2 and the key groove distribution line 14 on the valve rod 2 or the symmetry line of the square cross section of the flat tenon at the upper end of the valve rod 2 is 4-6 degrees.

Further, the fixing hole 6 is a blind hole, and the fixing hole 6 in the form of the blind hole can prevent the fixing piece 4 from directly penetrating and falling from the connecting piece 5 when being installed.

Working principle: when the valve rod valve is used, firstly, the fixing pieces 4 are respectively arranged in the fixing holes 6, then the valve plate 3 is arranged in the valve body 1, and then the angle of the fixing pieces 4 is adjusted so that the fixing surface 8 on the fixing pieces 4 is parallel to the inclined surface 7 on the valve rod 2, and then the valve rod 2 is penetrated into the valve rod hole 13 on the connecting plate 5;

the anti-loose gasket 11 is placed in the gasket groove 12, the fixing screw 9 is connected with the fixing piece 4, the fixing piece 4 is more compact between the fixing surface 8 and the inclined surface 7 in the fastening process of the fixing screw 9, so that the connection among the valve rod 2, the fixing piece 4 and the connecting plate 5 is firm, and the anti-loose gasket 11 stabilizes the fixing screw 9;

when the valve rod 2 or the valve plate 3 has a problem and needs to be maintained, the fixing screw 9 is removed, so that the valve rod 2, the fixing piece 4 and the connecting plate 5 are connected in the bracket, and the valve rod 2 can be taken down from the connecting plate 5, so that the valve rod is simple and convenient.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.

Claims

1. The utility model provides a valve plate fixed knot constructs convenient to dismantle, includes valve body (1), valve rod (2), valve plate (3) and mounting (4), be provided with valve rod (2) in valve body (1), be provided with valve plate (3), characterized by on valve rod (2): connecting plates (5) are respectively arranged at the upper end and the lower end of the valve plate (3), and the valve plate (3) is connected with the valve rod (2) by the connecting plates (5); the valve rod is characterized in that fixing holes (6) are respectively formed in the connecting plates (5), fixing pieces (4) are respectively arranged in the fixing holes (6), inclined surfaces (7) are arranged on the valve rod (2), fixing surfaces (8) are arranged on the fixing pieces (4), and the fixing surfaces (8) can be matched with the inclined surfaces (7); the fixing piece (4) is connected with the connecting plate (5) by a fixing screw (9).

2. The valve plate fixing structure convenient to detach according to claim 1, characterized in that: valve rod holes (13) are respectively formed in the connecting plates (5), and the valve rods (2) are arranged in the valve rod holes (13).

3. The valve plate fixing structure convenient to detach according to claim 1, characterized in that: one end of the fixing piece (4) is provided with a connecting arc plate (10), and the fixing screw (9) is in threaded connection with the connecting arc plate (10).

4. The valve plate fixing structure convenient to detach according to claim 1, characterized in that: a locking gasket (11) is arranged between the fixing screw (9) and the connecting plate (5), a gasket groove (12) is formed in the connecting plate (5), and the locking gasket (11) is located in the gasket groove (12).

5. The valve plate fixing structure convenient to detach according to claim 1, characterized in that: the inclination angle between the fixing surface (8) and the central axis of the fixing piece (4) is 1-3 degrees.

6. The valve plate fixing structure convenient to detach according to claim 1, characterized in that: the inclination between the inclined surface (7) on the valve rod (2) and the key groove distribution line (14) on the valve rod (2) is 4-6 degrees.

7. The valve plate fixing structure convenient to detach according to claim 1, characterized in that: the fixing hole (6) is a blind hole.