CN216112216U

CN216112216U - Slowly close non return butterfly valve structure

Info

Publication number: CN216112216U
Application number: CN202122336318.5U
Authority: CN
Inventors: 赵志城; 唐波; 张雪峰
Original assignee: SHANGHAI HUATONG VALVE CO Ltd
Current assignee: SHANGHAI HUATONG VALVE CO Ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-03-22
Anticipated expiration: 2031-09-26

Abstract

The utility model relates to the technical field of butterfly valves and discloses a slowly-closed check butterfly valve structure which comprises a valve body, wherein a valve seat is installed on the inner wall of the valve body, a valve rod is rotatably arranged in the valve body, a disc plate is installed in the middle of the valve rod, and two ends of the valve rod penetrate through the valve body and are connected with a driving mechanism. The utility model has reasonable structure and novel design, and the driving mechanisms are arranged at the two ends of the valve rod, so that when the valve is opened, a power source for assisting opening is provided, the opening speed of the valve is improved, the hydraulic loss is reduced, the energy is saved, the practicability is strong, and the reliability is high.

Description

Slowly close non return butterfly valve structure

Technical Field

The utility model relates to the technical field of butterfly valves, in particular to a slowly-closed check butterfly valve structure.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk.

When the present butterfly valve is used, the butterfly valve is mostly opened or closed manually, and the condition can lead to the generation of water hammer phenomenon, and then causes hydraulic loss, wastes the energy, therefore, needs further improvement.

Disclosure of Invention

The utility model aims to provide a slowly-closed check butterfly valve structure to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a slowly close non return butterfly valve structure, includes the valve body, valve body inner wall installation disk seat, the inside rotation of valve body is provided with the valve rod, valve rod mid-mounting dish board, the valve rod both ends are passed the valve body and are connected with actuating mechanism.

As a further scheme of the utility model: the driving mechanism comprises an air cylinder and an oil cylinder which are fixed at the end part of the valve rod.

As a further scheme of the utility model: and a sealing ring is arranged at the matching position of the side edge of the disc plate and the valve seat.

As a still further scheme of the utility model: the sealing ring is fixed on the disc plate through a pressing ring.

Compared with the prior art, the utility model has the beneficial effects that:

the slowly-closed check butterfly valve structure is reasonable in structure and novel in design, and when the valve is opened, the driving mechanisms are installed at the two ends of the valve rod, a power source for assisting opening is provided, so that the opening speed of the valve is increased, hydraulic loss is reduced, energy is saved, the practicability is high, and the reliability is high.

Drawings

Fig. 1 is a schematic front view of a slowly-closed check butterfly valve structure.

Fig. 2 is a left side view structural schematic diagram of a slow-closing check butterfly valve structure.

Fig. 3 is a right-view structural schematic diagram of a slow-closing check butterfly valve structure.

In the figure: 1. a valve body; 2. a plate; 3. a valve seat; 4. a seal ring; 5. pressing a ring; 6. a cylinder; 7. a valve stem; 8. and an oil cylinder.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the utility model, and further, the terms "first", "second", etc., are used only for descriptive purposes and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated, whereby the features defined as "first", "second", etc., may explicitly or implicitly include one or more of such features, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, and the two elements may be communicated with each other, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

Referring to fig. 1 to 3, in the embodiment of the utility model, the slow-closing check butterfly valve structure comprises a valve body 1, a valve seat 3 is installed on the inner wall of the valve body 1, a valve rod 7 is rotatably arranged inside the valve body 1, a disc plate 2 is installed in the middle of the valve rod 7, and two ends of the valve rod 7 penetrate through the valve body 1 and are connected with a driving mechanism.

In one aspect of the present invention, the driving mechanism includes an air cylinder 6 and an oil cylinder 8 fixed at an end of a valve rod 7, specifically, by slowly closing the oil cylinder 8, the purpose of slow closing is achieved, water hammer is reduced, safety of a pipeline system is ensured, and meanwhile, an air cylinder 6 is added as a power source for assisting opening.

In one aspect of the utility model, a sealing ring 4 is arranged at the position where the side edge of the disc plate 1 is matched with the valve seat 3.

Example 2

In another embodiment of the utility model, this embodiment differs from the above-described embodiment in that the sealing ring 4 is fixed to the plate 1 by means of a clamping ring 5.

The working principle of the utility model is as follows: the valve seat 3 is directly welded on the valve body 1, the sealing ring 4 of the butterfly plate 2 is fixed with the butterfly plate 2 body through the pressing ring 5, the heavy hammer is directly connected on the valve rod 7, the slowly-closed oil cylinder 8 and the air cylinder 6 are connected with the valve rod 7 through the support, in normal work, the butterfly plate 2 is in an opening state, when the pump is stopped, under the backflow of media and the effect of the heavy hammer, the butterfly plate 2 is automatically closed, due to the effect of the slowly-closed oil cylinder 8, the butterfly plate 2 is in final contact with the sealing surface of the valve seat, the time is in slow contact, water hammers in a pipeline system can be reduced, when the water pump is started, under the impact force of the media and the assistance of the air cylinder 6, the butterfly plate 2 can be quickly opened, and the requirement of a customer on the opening speed of the valve is met.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a slowly close non return butterfly valve structure, includes the valve body, its characterized in that, valve body inner wall installation disk seat, the inside rotation of valve body is provided with the valve rod, valve rod mid-mounting dish board, the valve rod both ends are passed the valve body and are connected with actuating mechanism.

2. The butterfly valve with slow-closing check valve structure of claim 1, wherein the driving mechanism comprises an air cylinder and an oil cylinder fixed at the end of the valve rod.

3. The structure of claim 2, wherein a sealing ring is installed at a position where the side edge of the butterfly plate is engaged with the valve seat.

4. The structure of claim 3, wherein the sealing ring is fixed to the butterfly plate by a pressing ring.