CN216867542U

CN216867542U - Connecting structure of butterfly plate and valve shaft

Info

Publication number: CN216867542U
Application number: CN202123053196.5U
Authority: CN
Inventors: 王健民; 余鹏飞; 陈亦忠
Original assignee: Shanghai Leifu Valve Technology Co ltd
Current assignee: Shanghai Leifu Valve Technology Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-07-01
Anticipated expiration: 2031-12-07

Abstract

The utility model discloses a connecting structure of a butterfly plate and a valve shaft, and belongs to the technical field of butterfly valves. The butterfly valve comprises a valve shaft and a butterfly plate, wherein the butterfly plate is sleeved on the valve shaft, a plurality of uniformly distributed riding seams are formed in the contact surface of the butterfly plate and the valve shaft, a plurality of riding seam pins are arranged in the riding seams, and a fixing plate is arranged on the end face of the valve shaft. The valve shaft and the butterfly plate are connected by the aid of the seam-riding pins, the connecting process is simple, seam-riding boring holes are adopted, transmitted torque is large, and the size of the transmitted torque of the seam-riding pins is determined by the size of the axial section.

Description

Connecting structure of butterfly plate and valve shaft

Technical Field

The utility model relates to a connecting structure of a butterfly plate and a valve shaft, and belongs to the technical field of butterfly valves.

Background

The existing valve shaft and the butterfly plate are usually connected by a matched drill through taper pin or a pin, the through pin is completed under a matched drill process, that is, the valve is basically assembled, the whole weight is heavy (for example, the DN3400 valve is 20 tons), and a deep hole (the DN3400 valve drilling depth is 500 mm) to be matched and drilled on a heavy object with a huge volume is not easy: the method is completed under the tools of customizing lengthened drill bits, reamer blades and the like, the machining is complex, the torque transmitted by the through pin is low, the torque transmission capacity is determined by the size of an axial interface of the through pin, and a plurality of through pins are often needed to meet the torque transmission requirement.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: the connecting structure of the butterfly plate and the valve shaft solves the problem that the butterfly plate is installed on the water inlet valve with the extra-large caliber and is complex to process.

The technical problem to be solved by the utility model is realized by adopting the following technical scheme:

the utility model provides a connection structure of butterfly plate and valve shaft, includes valve shaft and butterfly plate, the butterfly plate cover is established on the valve shaft, set up a plurality of evenly distributed's seam on the contact surface of butterfly plate and valve shaft, it is a plurality of all be provided with in the seam and ride the seam round pin, the terminal surface of valve shaft is provided with the fixed plate.

As a preferred example, the fixing plate covers the end face of the valve shaft, and one side of the fixing plate close to the valve shaft abuts against the step of the butterfly plate.

As a preferred example, the fixing plate is fixedly connected to the valve shaft by a plurality of socket head cap screws.

As a preferred example, the riding seam extends to an end surface of the valve shaft, and the fixing plate abuts against an end of the riding seam pin.

As a preferred example, the sewing pins are provided at least four.

The utility model has the beneficial effects that: the valve shaft and the butterfly plate are connected by the aid of the seam-riding pins, the connecting process is simple (seam-riding boring is adopted), transmitted torque is large, and the size of the transmitted torque of the seam-riding pins is determined by the size of the axial section.

Drawings

FIG. 1 is a schematic view of a prior art connection configuration;

FIG. 2 is a schematic structural diagram of the present invention.

In the figure: the valve shaft 1, the butterfly plate 2, the through pin 3, the perforation pin 4, the fixed plate 5 and the hexagon socket head cap screw 6.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the utility model easy to understand, the utility model is further described with reference to the specific drawings.

As shown in fig. 2, a connection structure of butterfly plate and valve shaft, including valve shaft 1 and butterfly plate 2, butterfly plate 2 cover is established on valve shaft 1, set up a plurality of evenly distributed's seam on the contact surface of butterfly plate 2 and valve shaft 1, all be provided with seam pin 4 in a plurality of seams, the terminal surface of valve shaft 1 is provided with fixed plate 5, fixed plate 5 covers on the terminal surface of valve shaft 1, and fixed plate 5 offsets with the step department of butterfly plate 2 near one side of valve shaft 1, further carries out the ascending restriction of axial to butterfly plate 2.

The fixing plate 5 is fixedly connected with the valve shaft 1 through a plurality of socket head cap screws, so that the mounting and dismounting are facilitated.

The seam of riding extends to the terminal surface of valve shaft 1, adopts the boring machine bore hole processing, and fixed plate 5 offsets with the tip of seam round pin 4 for seam round pin 4 of riding is stable can not deviate from.

At least four seam crossing pins 4 are arranged to enhance the connection strength.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a connection structure of butterfly plate and valve shaft, includes valve shaft (1) and butterfly plate (2), its characterized in that: the butterfly plate (2) is sleeved on the valve shaft (1), a plurality of uniformly distributed riding seams are formed in the contact surface of the butterfly plate (2) and the valve shaft (1), a plurality of riding seam pins (4) are arranged in the riding seams, and a fixing plate (5) is arranged on the end face of the valve shaft (1).

2. A butterfly plate and valve shaft coupling structure according to claim 1, wherein: the fixing plate (5) covers the end face of the valve shaft (1), and one side, close to the valve shaft (1), of the fixing plate (5) abuts against the step of the butterfly plate (2).

3. A butterfly plate and valve shaft coupling structure according to claim 2, wherein: the fixing plate (5) is fixedly connected with the valve shaft (1) through a plurality of socket head cap screws.

4. A butterfly plate and valve shaft coupling structure according to claim 1, wherein: the joint is extended to the end face of the valve shaft (1), and the fixing plate (5) is abutted to the end part of the joint riding pin (4).

5. A butterfly plate and valve shaft coupling structure according to claim 1, wherein: the seam crossing pins (4) are at least four.