阅读说明：本技术 一种带有介质自驱不平衡阀芯的止回阀 (Check valve with medium self-driven unbalanced valve core ) 是由 薛冬 祁崇可 陈时健 王志敏 于 2018-07-27 设计创作，主要内容包括：本发明属于阀门领域,具体涉及一种带有介质自驱不平衡阀芯的止回阀。一种带有介质自驱不平衡阀芯的止回阀,该阀门的阀芯结构面积不等。本发明的显著效果是：通过在阀体和阀芯结构上开通孔,可以使得两种外部流体在阀芯结构上形成压力,并且由于阀芯结构的不对称结构,形成上下压力的压差,此时只需要调整两种外部流体的压力,就能控制阀门的开闭,而不需要专门的阀门开关,最大程度的保证了阀门的自适应开闭。(The invention belongs to the field of valves, and particularly relates to a check valve with a medium self-driving unbalanced valve core. A check valve with a medium self-driven unbalanced valve core has unequal structural areas of the valve core. The invention has the following remarkable effects: through opening the through-hole on valve body and case structure, can be so that two kinds of outside fluid form pressure in case structure to because the asymmetric structure of case structure, form the pressure differential of pressure from top to bottom, only need adjust the pressure of two kinds of outside fluids this moment, just can control the switching of valve, and do not need special valve switch, furthest's assurance the self-adaptation switching of valve.)

1. The utility model provides a check valve with medium is from driving unbalanced valve core which characterized in that: the valve core structure area of the valve is unequal.

2. A check valve with a self media drive unbalanced cartridge as in claim 1, wherein: including valve body (1), set up disk seat (2) on valve body (1), valve body (1) top sets up valve gap (7), at valve body (1), set up medium in the cavity that disk seat (2) and valve gap (7) formed and drive unbalanced case structure (3) certainly, the medium drives the lateral wall of unbalanced case structure (3) certainly and passes through sealing washer (4) and valve body (1) inside wall seal, the medium is from partly stretching into valve gap (7) inside of driving unbalanced case structure (3), and the lateral wall of this part passes through the sealing washer with the lateral wall of valve gap (7) and seals.

3. A check valve with a self media drive unbalanced cartridge as in claim 2, wherein: the medium self-driving unbalanced valve core structure (3) is approximately of a T-shaped structure, a channel is arranged on the medium self-driving unbalanced valve core structure (3), and the top end and the tail end of the T-shaped structure are communicated.

4. A check valve with a self media drive unbalanced cartridge as in claim 3, wherein: the side wall of the valve body (1) is provided with two channels which are not communicated with each other, so that two external fluids can flow in from two opposite directions of the valve body (1).

5. The check valve with a self media drive unbalanced cartridge of claim 4, wherein: a channel is arranged on the side wall of the valve body (1) so that external fluid flows into one side face of the medium self-driving unbalanced valve core structure (3), and another channel is arranged on the valve cover (7) so that the other path of external fluid flows into the other side face of the medium self-driving unbalanced valve core structure (3).

6. A check valve with a self-drive unbalanced cartridge for media as in claim 4 or 5 wherein: and a spring (5) is arranged between the medium self-driving unbalanced valve core structure (3) and the valve cover (7).

Technical Field

The invention belongs to the field of valves, and particularly relates to a check valve with a medium self-driving unbalanced valve core.

Background

The structure of the check valve is mature, but the requirements of the check valve with the traditional structure on the installation direction, the medium flow direction and the working condition of the valve can greatly limit the application occasions of the check valve.

The structure of the check valve is mature, but the requirements of the check valve with the traditional structure on the installation direction, the medium flow direction and the working condition of the valve can greatly limit the application occasions of the check valve.

If swing check valve relies on valve clack gravity to guarantee sealing performance and non return function, and valve clack motion mode is rotary motion: the positive medium presses the surface of the inlet valve clack to rotate the valve clack along the medium flow direction to open the valve; the backflow medium presses the surface of the valve clack at the outlet end to realize the non-return function. The rotary check valve can be used for horizontal pipelines and vertical pipelines, but due to the limitation of the working principle and the movement mode of the valve clack, the rotary check valve used on the vertical pipeline can only realize that media flow from bottom to top, and water hammer is easy to generate when the valve is used for non-return, so that the pressure in the pipeline rises suddenly, and the valve and pipeline equipment can be damaged when the pressure is serious.

For example, the operation principle of the lift check valve is similar to that of a swing check valve, but the valve flap moves up and down, so that the valve is required to be only applied to a horizontal pipeline.

Other conventional check valves also suffer from the following drawbacks:

1. cannot be applied to horizontal pipelines and vertical pipelines simultaneously;

2. the opening and non-return functions of incoming flow media in each direction cannot be realized;

3. the non-return speed is high, and water hammer phenomena are easy to generate;

4. the requirement on the opening pressure difference is high.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a check valve with a medium self-driven unbalanced valve core, which can drive a valve through a medium.

The structure technology for realizing the purpose of the invention is as follows: a check valve with a medium self-driven unbalanced valve core has unequal structural areas of the valve core.

The check valve with the medium self-driving unbalanced valve core comprises a valve body, a valve seat is arranged on the valve body, a valve cover is arranged at the top end of the valve body, a medium self-driving unbalanced valve core structure is arranged in a cavity formed by the valve body, the valve seat and the valve cover, the side wall of the medium self-driving unbalanced valve core structure is sealed with the inner side wall of the valve body through a sealing ring, one part of the medium self-driving unbalanced valve core structure extends into the valve cover, and the side wall of the part and the side wall of the valve cover are sealed through the sealing ring.

The check valve with the medium self-driving unbalanced valve core is characterized in that the medium self-driving unbalanced valve core is of a T-shaped structure, and a channel is arranged on the medium self-driving unbalanced valve core structure to communicate the top end and the tail end of the T-shaped structure.

The check valve with the medium self-driving unbalanced valve core is characterized in that two channels which are not communicated with each other are arranged on the side wall of the valve body, so that two external fluids can flow in from two opposite directions of the valve body.

The check valve with the medium self-driving unbalanced valve core is characterized in that a channel is arranged on the side wall of the valve body, so that external fluid flows into one side surface of the medium self-driving unbalanced valve core structure, and another channel is arranged on the valve cover, so that the other path of external fluid flows into the other side surface of the medium self-driving unbalanced valve core structure.

The check valve with the medium self-driving unbalanced valve core is characterized in that a spring is arranged between the medium self-driving unbalanced valve core structure and the valve cover.

The invention has the following remarkable effects: through opening the through-hole on valve body and case structure, can be so that two kinds of outside fluid form pressure in case structure to because the asymmetric structure of case structure, form the pressure differential of pressure from top to bottom, only need adjust the pressure of two kinds of outside fluids this moment, just can control the switching of valve, and do not need special valve switch, furthest's assurance the self-adaptation switching of valve.

Drawings

FIG. 1 is a schematic view of a vertical installation structure of a check valve with a medium self-driven unbalanced valve core.

Fig. 2 is a schematic diagram of a horizontal installation structure of a check valve with a medium self-driven unbalanced valve core.

FIG. 3 is a schematic diagram of the principle that the medium flows in the direction of the valve flap under force.

In the figure: 1-valve body 2-valve seat 3-medium self-driving unbalanced valve core structure 4-sealing ring 5-spring 6-sealing ring 7-valve cover.

Detailed Description

A check valve with a medium self-driven unbalanced valve core has unequal structural areas of the valve core.

As shown in attached figures 1-3, a check valve with medium self-driving unbalanced valve core, including valve body 1, set up disk seat 2 on valve body 1, valve body 1 top sets up valve gap 7, set up medium self-driving unbalanced valve core structure 3 in the cavity that valve body 1, disk seat 2 and valve gap 7 formed, the lateral wall of medium self-driving unbalanced valve core structure 3 passes through sealing washer 4 and 1 inside wall of valve body is sealed, the medium self-driving unbalanced valve core structure 3 partly stretches into inside valve gap 7, and the lateral wall of this part passes through the sealing washer with the lateral wall of valve gap 7 and seals.

The medium self-driving unbalanced valve core structure 3 is approximately in a T-shaped structure, a channel is arranged on the medium self-driving unbalanced valve core structure 3, and the top end and the tail end of the T-shaped structure are communicated.

Two complementary communicating channels are arranged on the side wall of the valve body 1, so that two external fluids can flow in from two opposite directions of the valve body 1.

And a spring 5 is arranged between the medium self-driving unbalanced valve core structure 3 and the valve cover 7.

The application valve uses the process roughly as follows: the medium self-driving unbalanced valve core structure 3 divides a cavity formed by the valve body 1, the valve seat 2 and the valve cover 7 into two parts which are isolated from each other, and for convenience of introduction, the cavity containing the valve seat 2 is called an A space, and the cavity containing the valve cover 7 is called a B space. One end of the medium self-driving unbalanced valve core structure 3 is abutted against the valve seat 2, the partial medium self-driving unbalanced valve core structure 3 is contacted with an external fluid (fluid C), and the fluid C cannot enter the space A because the medium self-driving unbalanced valve core structure 3 is tightly abutted against the valve seat 2. In addition, a channel is arranged on the valve body 1, and fluid C can enter the space B through the channel. Another fluid (fluid D) enters the space a through another channel on the valve body 1 (another channel may not be disposed on the valve body 1, but is disposed on the valve cover 7), and meanwhile, because the medium self-driving unbalanced valve core structure 3 itself is also provided with a channel, the fluid D can enter the medium self-driving unbalanced valve core structure 3 through the channel on the medium self-driving unbalanced valve core structure 3 to form a sealed space with the valve cover 7. At this time, because the geometric shape of the medium self-driving unbalanced valve core structure 3 is vertically asymmetric, the pressures of the two fluids C, D to the medium self-driving unbalanced valve core structure 3 are different, and the opening and closing of the valve can be realized by adjusting the pressure of the fluid C, D.

The medium generates unbalanced force to drive the valve to open or close through the valve core structure area difference. The check valve is suitable for check valve structures such as direct current, direct connection, Y-shaped and angle-shaped check valve structures. The utility model provides an use check valve of unbalanced case structure of medium self-powered, is applicable to all kinds of connections such as butt welding, flange, can install on vertical pipeline, horizontal pipeline and slope pipeline, can satisfy various medium flow directions, can be used for operating modes such as high pressure differential, low pressure differential, drives valve through unbalanced force and opens, seals and the non return.