CN103398206A - Magnetic dynamic flexible diaphragm actuated pipeline switch valve - Google Patents

Abstract

The invention relates to a pipeline valve, in particular to a magnetomotive flexible diaphragm starting pipeline switch valve, which is provided with a valve body and a gland, wherein a medium inlet channel and a medium outlet channel are arranged in the valve body, and a transition cavity communicated with the inlet channel and the outlet channel is arranged on the gland, and is characterized in that: a flexible diaphragm is pressed between the gland and the valve body and is positioned in the transition cavity and can be communicated or disconnected between the outlet end of the inlet channel and the inlet end of the outlet channel; and the flexible diaphragm is provided with a pressure balance hole for communicating the inlet channel and the transition cavity; the magnetic valve bank is arranged on one side of the valve body and the gland close to the outlet channel, a knob is arranged on the gland, a cantilever is designed on the knob, the cantilever is positioned at the top of a cylinder sleeve of the magnetic valve bank and is provided with a magnetic block, and the magnetic block and a magnetic column in a sliding sleeve in the magnetic valve bank are oppositely arranged in different poles; the invention solves the problems of difficult sealing, easy leakage, inconvenient operation, short service life and the like of the existing switch valve, and is widely applied to various water supply and air supply pipelines.

Description

Magnetic dynamic flexible diaphragm actuated pipeline switch valve

technical field

The invention relates to pipeline valve products, in particular to a pipeline switching valve activated by a magnetic dynamic flexible diaphragm.

Background technique

At present, most of the intermediate control valves in the water supply and gas supply pipelines are ball valves. The ball valves are dynamic sealing contact valves. For high-pressure gas and water pipelines, long-term and reliable sealing is difficult for ordinary ball valves.

Contents of the invention

The purpose of the present invention is to solve the problems of using ball valve control in existing pipelines, which have large operating force, short service life, easy medium leakage, and potential safety hazards, and provide a non-leakage magnetic dynamic flexible diaphragm activated pipeline switch valve .

The specific scheme of the present invention is: a magnetic dynamic flexible diaphragm starts the pipeline switch valve, has a valve body and a gland, and a medium inlet and outlet channel is opened in the valve body, and a transition chamber is provided on the gland to communicate with the inlet and outlet channels. Its characteristics are: a flexible diaphragm is pressed between the gland and the valve body, and the flexible diaphragm is located in the transition chamber, which can connect or disconnect the connection between the outlet end of the inlet channel and the inlet end of the outlet channel; and There is a pressure balance hole on the flexible diaphragm to connect the inlet passage and the transition chamber; on the side of the valve body and the gland close to the outlet passage, a magnetic valve group is installed. The magnetic valve group has a cylinder liner, and the lower part of the cylinder liner is equipped with Core seat with central boss, there is a pressure relief hole in the center of the core seat to communicate with the outlet channel on the valve body, a sliding sleeve is installed inside the cylinder liner, an outer step is provided at the lower end of the sliding sleeve, and a return spring is set on the outside of the sliding sleeve. The upper part of the sliding sleeve is equipped with a magnetic column, and the lower part is equipped with a plug facing the boss of the core seat, and the magnetic column and the plug are integrated, and the side wall of the cylinder liner is opened with a flow hole to communicate with the transition chamber; A knob is arranged on the cover, and a cantilever is designed on the knob. The cantilever is located on the top of the cylinder liner of the magnetic power valve group and is equipped with a magnetic block. The magnetic block is arranged opposite to the magnetic column in the sliding sleeve with different poles.

In the present invention, an anti-silting needle is installed on the gland opposite to the pressure balance hole on the flexible diaphragm, and the anti-silting needle is arranged through the pressure balance hole.

In the present invention, two limit mechanisms of opening and closing are designed between the knob and the gland.

The working principle of the present invention is: refer to Figure 2 for the initial closed state, open the valve, turn the knob, and reach the opening limit position, so that the magnetic block on the knob is located directly above the magnetic column, then the magnetic column is sucked up, and at the same time drives the plug Lift it up to open the pressure relief hole on the core seat, thereby releasing the medium pressure in the transition chamber, and the flexible diaphragm opens the inlet of the outlet channel upwards under the pressure of the incoming medium and communicates with the inlet channel (see Figure 3). That is to say, the valve is opened. When the valve needs to be closed, turn the knob to make the magnetic ring leave the top of the magnetic column and reach the closing limit position. Then the sliding sleeve of the reset spring top drives the plug to move down, closing the pressure relief hole on the core seat, and the transition chamber The pressure of the medium in the medium rises rapidly, thereby pressing the flexible diaphragm to close the valve (see Figure 2).

The opening and closing mechanism in the present invention completely isolates the action, completely eliminates external leakage, and has no friction, high sealing performance, light and flexible operation, convenient processing and manufacturing, low precision requirements, and long service life of the valve. The present invention is different from traditional ball valves. No matter in structure and control mode, it is an upgraded product.

Description of drawings

Fig. 1 is a sectional view of the general structure of the present invention;

Fig. 2 is a closed state diagram of the magnetic power valve group of the present invention;

Fig. 3 is an open state diagram of the magnetic power valve group of the present invention.

In the figure: 1—knob, 2—cantilever, 3—magnetic block, 4—magnetic column, 5—sliding sleeve, 6—return spring, 7—cylinder liner, 8—plug, 9—pressure relief hole, 10—core Seat, 11—exit channel, 12—pressure balance hole, 13—anti-silting needle, 14—smart diaphragm, 15—inlet channel, 16—valve body, 17—gland, 18—transition chamber, 19—spring, 20 - steel ball, 21 - positioning groove, 22 - flow hole.

Detailed ways

Referring to Fig. 1, 2, 3, the present invention has valve body 16 and gland 17, is provided with medium inlet and outlet channel in valve body 16, is provided with transition cavity 18 on gland 17 and communicates with inlet and outlet channel, especially : A flexible diaphragm 14 is pressed between the gland 17 and the valve body 16, and the flexible diaphragm 14 is located in the transition chamber 18, which can connect or disconnect the outlet end of the inlet passage 15 and the inlet end of the outlet passage 11. connection; and a pressure balance hole 12 is opened on the smart diaphragm 14 to communicate with the inlet passage 15 and the transition chamber 18; on the side of the valve body 16 and the gland 17 near the outlet passage 11, a magnetic valve group is installed. The group has a cylinder liner 7, the lower part of the cylinder liner 7 is equipped with a core seat 10 with a central boss, the center of the core seat 10 has a pressure relief hole 9 connected to the outlet channel on the valve body, and the cylinder liner 7 is equipped with a sliding sleeve 5, The lower end of the sliding sleeve 5 is provided with an outer step spigot, the outer sleeve of the sliding sleeve 5 is provided with a return spring 6, the upper part of the sliding sleeve 5 is equipped with a magnetic column 4, and the lower part is equipped with a plug 8 which is arranged to face the boss of the core seat 10, and the magnetic The column 4 is integrated with the plug 8, and the side wall of the cylinder liner 7 has an overflow hole 22 to communicate with the transition chamber 18; a knob 1 is installed on the gland 17, and a cantilever 2 is designed on the knob 1, and the cantilever 2 is located on the magnetic power The top of the cylinder liner of the valve group is also equipped with a magnetic block 3, which is arranged opposite to the magnetic column 4 in the sliding sleeve 5 with different poles.

In the present invention, an anti-silting needle 13 is also installed on the gland 17 facing the pressure balance hole 12 on the flexible diaphragm 14, and the anti-silting needle 13 is arranged through the pressure balance hole 12.

In the present invention, two limit mechanisms of opening and closing are also designed between the knob 1 and the pressing cover 17 .

The position-limiting mechanism in the present embodiment is referring to Fig. 1, is to install spring 19 and steel ball 20 on gland, and corresponding steel ball 20 has positioning groove 21 on knob 1. The opening and closing two limit mechanisms are dislocated at an angle of 60-90°. The position-limiting mechanism can also adopt other structures such as retaining posts.

Claims (3)

1. The magnetic power flexible diaphragm starts the pipeline switching valve, which has a valve body and a gland. There are medium inlet and outlet channels in the valve body, and a transition chamber is provided on the gland to connect the inlet and outlet channels. Its characteristics are: A flexible diaphragm is pressed between the gland and the valve body, and the flexible diaphragm is located in the transition chamber, which can connect or disconnect the connection between the outlet end of the inlet passage and the inlet end of the outlet passage; There is a pressure balance hole connecting the inlet channel and the transition chamber; on the side of the valve body and gland close to the outlet channel, a magnetic valve group is installed. The magnetic valve group has a cylinder liner, and the lower part of the cylinder liner is equipped with a central boss There is a pressure relief hole in the center of the core seat to communicate with the outlet channel on the valve body. A sliding sleeve is installed inside the cylinder liner. There is a magnetic column, the lower part is equipped with a plug facing the boss of the core seat, and the magnetic column and the plug are integrated into one body, and the side wall of the cylinder liner is opened with a flow hole to communicate with the transition chamber; the gland is equipped with a knob, A cantilever is designed on the knob, and the cantilever is located on the top of the cylinder liner of the magnetic power valve group and is equipped with a magnetic block, which is arranged opposite to the magnetic column in the sliding sleeve with different poles. 2. The magnetic-dynamic smart diaphragm activated pipeline switch valve according to claim 1, characterized in that: an anti-silting needle is installed on the gland opposite to the pressure balance hole on the smart diaphragm, and the anti-silting needle passes through the pressure balance hole. Balance hole arrangement. 3. The magnetic dynamic flexible diaphragm activated pipeline switch valve according to claim 1, characterized in that: two limit mechanisms for opening and closing are designed between the knob and the gland.

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