Improved-type adjustment valve with self-sealing function

Abstract

The invention relates to a fluid control valve and provides an improved-type adjustment valve with a self-sealing function. The adjustment valve is characterized by a rational structure, high safety, good sealing effects and integration of a check control function, a filtering function and a water-saving function. The adjustment valve comprises a valve body, a valve rod, a valve cover, a drive device and a sealing pressing plate, wherein the valve body is equipped with a water inlet and a water outlet for media circulation; an intersected and adjacent part of the valve body located between the water inlet and the water outlet is also equipped with the valve base; a valve hole is formed in the middle of the valve base; the valve cover is disposed on the valve body; the valve also comprises a floating valve flap which is disposed on the valve hole in the valve body in an openable manner; the sealing pressing plate is disposed above the floating valve flap; a check control spring is disposed between the sealing pressing plate the floating valve flap; one end of the valve rod passes through the valve cover and is firmly connected to the sealing pressing plate; the drive device is disposed on a free end of the valve rod; a spring installation groove is also formed in the outer side of the upper part of the valve base located at the floating valve flap; a compression spring is disposed in the spring installation groove; and a filtering cylinder is disposed between the compression spring and the sealing pressing plate.

Description

technical field [0001] The invention relates to a fluid control valve, in particular to an improved regulating valve with self-sealing function. Background technique [0002] Globe valve, also called cut-off valve, is installed in the pipeline to control the circulation or cut-off of the medium in the pipeline. The existing globe valve includes valve body, valve stem, bonnet, valve disc, pressure cap and handwheel. The valve body is provided with a water inlet and a water outlet for medium circulation, and the valve body is located at the intersection of the water inlet and the water outlet and also has a valve port, the valve cover is arranged above the valve body, and the pressure cap is arranged Above the cover, the valve clack can be opened and closed on the valve port in the valve body, one end of the valve stem passes through the pressure cap and the valve cover and is fixedly connected with the valve clack, and the hand wheel is set at the free end of the valve stem ...

AI Technical Summary

Problems solved by technology

[0003] 1. It does not have a check function, it cannot prevent the medium in the pipeline from flowing back, and it cannot control the one-way flow of the medium, which brings inconvenience to the cleaning and maintenance of the globe valve

In order to prevent the backflow of the medium in the pipeline, after installing the regulating valve on the tap water pipeline, it is necessary to install a check valve on the pipeline adjacent to the outlet of the shut-off valve. Since the shut-off valve and the check valve are not integral structures, they must be installed separately. , the installation operation is complicated, time-consuming and labor-intensive, which increases the joints of the pipelines, and also increases the installation and maintenance costs, which brings inconvenience to the construction personnel, and the separate installation of the check valve occupies the position of the pipeline

[0004] 2. It does not have the filtering function. In order to remove the suspended impurities in the pipeline, after installing the shut-off valve on the tap water pipeline, it is necessary to install a filter device on the adjacent pipeline near the shut-off valve, which also increases the cost of installation and maintenance. inconvenience to staff

[0005] 3. The water outlet pressure of the above cut-off valve is not adjustable, and has no decompression effect. The water outlet pressure of the valve port cannot be adjusted according to the actual use situation, and it does not have the function of saving water.

[0006] 4. The sealing effect of the above globe valve is not good, and water often leaks from the joint between the valve cover and the valve body after a long time of use.

Images