CN108413249B

CN108413249B - Water injection valve for controlling pressure and flow

Info

Publication number: CN108413249B
Application number: CN201810560410.XA
Authority: CN
Inventors: 施志建; 丁恒军; 张俊勇
Original assignee: Jiangsu Trust Valve Co ltd
Current assignee: Jiangsu Trust Valve Co ltd
Priority date: 2018-06-04
Filing date: 2018-06-04
Publication date: 2020-06-12
Anticipated expiration: 2038-06-04
Also published as: CN108413249A

Abstract

The invention relates to a water injection valve for controlling pressure and flow, which comprises a diversion water pipe, wherein one end of the diversion water pipe is connected with a water inlet, the other end of the diversion water pipe is connected with a water outlet, a main valve block is arranged at the position, close to the water outlet, of the diversion water pipe, a filtering structure is arranged in the diversion water pipe, close to the water inlet and the water outlet, a pressure divider is also arranged, and the top of the pressure divider is fixed with; the invention achieves the dual functions of controlling pressure and controlling flow through a simple structure, and has high efficiency.

Description

Water injection valve for controlling pressure and flow

Technical Field

The invention relates to a water injection valve for controlling pressure and flow, and belongs to the field of valves.

Background

Valves are plumbing accessories used to open and close a pipe, control flow direction, regulate and control parameters of the transport medium (temperature, pressure and flow). According to their function, they can be classified into shut-off valves, check valves, regulating valves, and the like.

The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems.

The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are further classified into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves, etc. according to the material.

The application number is 201720881917.6, the invention discloses a gas cylinder valve with pressure maintaining function, which comprises a hand wheel, a valve body, a valve rod, a pressure cap, a valve core and a safety relief device, wherein the valve body is provided with an air inlet for connecting a gas cylinder and an air outlet interface for external use, the air inlet interface of the valve body is provided with the pressure maintaining device, the pressure maintaining device comprises a valve, a spring and a spring seat, the spring seat is in threaded connection with the valve body and is sealed by a sealing ring, the valve is located in a movable cavity in the air inlet interface of the valve body, the valve is designed into a large piston and a small piston, the outer side of the large piston is provided with the sealing ring, a long and thin ejector rod at one end of the valve penetrates through a ventilation channel, the. When the gas cylinder is deflated to a set pressure, the valve can be automatically closed, so that air in the gas cylinder is prevented from entering the gas cylinder after the gas in the gas cylinder is completely used up, the purity of the gas in the gas cylinder is ensured, the gas cylinder is not required to be vacuumized during inflation, and the production cost is saved; however, the above-mentioned valve structure has a problem that the structure is complicated and cannot attenuate the shock generated when the pressure and the flow rate are simultaneously excessive.

Disclosure of Invention

The invention provides a water injection valve for controlling pressure and flow, which has the advantages of achieving double functions of controlling pressure and flow and having high efficiency through a simple structure.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a water injection valve for controlling pressure and flow comprises a diversion water pipe, wherein one end of the diversion water pipe is connected with a water inlet, the other end of the diversion water pipe is connected with a water outlet, a main valve block is arranged at the position, close to the water outlet, of the diversion water pipe, a filtering structure is arranged in the diversion water pipe, close to the water inlet, and a pressure divider is further arranged, and the top of the pressure divider is fixed with the filtering structure;

the pressure divider comprises a buoy, a valve pipe is installed at the top end of the pressure divider, the top end of the valve pipe is fixedly connected with a filtering structure, the bottom end of the valve pipe extends into the buoy, a top sealing block and a bottom sealing block are arranged in the valve pipe and are connected through a connecting rod, the top sealing block is fixed on the filtering structure, a space between the top sealing block and the bottom sealing block is filled through a trapezoidal block, two gradually-reduced spaces are formed between the top sealing block and the bottom sealing block, and the bottom end of the bottom sealing block is connected with the bottom end of the valve pipe through a relaxation spring;

a floating plate and a pressure dividing piston rod are also arranged in the buoy, the floating plate is fixed at the top end of the pressure dividing piston rod, and the bottom end of the pressure dividing piston rod extends out of the bottom end of the buoy;

the pressure-variable valve also comprises a synchronous valve, wherein one end of the synchronous valve extends into the pressure-variable cavity and is communicated with the pressure-variable pipe, and the other end of the synchronous valve extends out of the pressure-variable cavity and is fixedly connected with the bottom end of the main valve block;

as a further preferred aspect of the present invention, the filtering structure comprises a plurality of filtering plates, and each filtering plate is installed at an angle of 45 degrees with the flow guiding water pipe;

as a further preferable aspect of the present invention, support columns are fixed to both ends of the top closing block, respectively;

as a further preferred aspect of the present invention, a through hole is formed at the position of the diversion water pipe close to the water outlet, the top end of the main valve block is close to the through hole and is matched with the through hole in size, and a sealing ring is sleeved around the through hole;

as a further preferred aspect of the present invention, the two filter plates are provided in total and arranged in sequence.

Through the technical scheme, compared with the prior art, the invention has the following beneficial effects:

according to the invention, through the arrangement of the pressure dividing valve, when the flow rate in the diversion water pipe is rapidly increased, the pressure dividing valve deforms to remind the drainage channel to be opened, and the movement of the pressure dividing piston rod drives the movement of the main valve block at the water outlet, so that the valve is closed, and the dual functions of pressure dividing and flow control are realized.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic overall structure of a preferred embodiment of the present invention;

fig. 2 is a schematic diagram of the structure at a in the preferred embodiment of the present invention.

In the figure: the device comprises a water inlet 1, a flow guide water pipe 2, a water outlet 3, a pressure dividing valve 4, a floating barrel 5, a pressure dividing piston rod 6, a floating plate 7, a pressure varying cavity 8, a pressure varying pipe 9, a synchronizing valve 10, a main valve block 11, a sealing ring 12, a filter plate 13, a bottom sealing block 14, a top sealing block 15, a support column 16, a connecting rod 17, a relaxation spring 18 and a valve pipe 19.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1-2, the present invention includes the following features: the device comprises a water inlet 1, a flow guide water pipe 2, a water outlet 3, a pressure dividing valve 4, a floating barrel 5, a pressure dividing piston rod 6, a floating plate 7, a pressure varying cavity 8, a pressure varying pipe 9, a synchronizing valve 10, a main valve block 11, a sealing ring 12, a filter plate 13, a bottom sealing block 14, a top sealing block 15, a support column 16, a connecting rod 17, a relaxation spring 18 and a valve pipe 19.

The invention relates to a water injection valve for controlling pressure and flow, which comprises a diversion water pipe, wherein one end of the diversion water pipe is connected with a water inlet, the other end of the diversion water pipe is connected with a water outlet, a main valve block is arranged at the position, close to the water outlet, of the diversion water pipe, a filtering structure is arranged in the diversion water pipe, close to the water inlet, and a pressure divider is also arranged, and the top of the pressure divider is fixed with the filtering structure;

During the use, liquid is got into by the water inlet, behind the water conservancy diversion water pipe through the filter, flow by the delivery port, when the velocity of flow is too big, the filter takes place strong vibrations, receive water pressure drive in this minute-pressure valve, make the separation of bottom seal piece and the convergent inner wall of valve pipe, open drainage channel this moment, to water injection in the flotation pontoon, along with hydraulic grow in the flotation pontoon, the kickboard rises, vary voltage intracavity pressure changes, the vary voltage pipe takes place the footpath and becomes, the synchronizing valve is by the pulling under the pressure effect, after the synchronizing valve takes place to drive, main valve block rather than linking to each other takes place to remove, seal the through-hole, the valve is closed this moment.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The meaning of "and/or" as used herein is intended to include both the individual components or both.

The term "connected" as used herein may mean either a direct connection between components or an indirect connection between components via other components.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A water injection valve of control pressure and flow, its characterized in that: the water-saving filter comprises a diversion water pipe, a filter structure and a pressure divider, wherein one end of the diversion water pipe is connected with a water inlet, the other end of the diversion water pipe is connected with a water outlet, a main valve block is arranged at the position, close to the water outlet, of the diversion water pipe, a filter structure is arranged in the diversion water pipe, close to the water inlet, and the top of the pressure divider is fixed with the;

still include the variable pressure chamber, it is fixed in the bottom of flotation pontoon, and the bottom of partial pressure piston rod stretches out the flotation pontoon bottom and stretches into the variable pressure intracavity simultaneously, is equipped with the variable pressure pipe at the variable pressure intracavity, and the top of variable pressure pipe and the bottom fixed connection of partial pressure piston rod still include the synchronizing valve, and the one end of synchronizing valve stretches into the variable pressure intracavity and is linked together with the variable pressure pipe, and the other end stretches out the bottom fixed connection of variable pressure chamber and main valve piece.

2. The water injection valve for controlling pressure and flow according to claim 1, wherein: aforementioned filtration includes a plurality of filters, and every filter is 45 degrees angle installations with the water conservancy diversion pipe.

3. The water injection valve for controlling pressure and flow according to claim 1, wherein: and supporting columns are respectively fixed at two ends of the top sealing block.

4. The water injection valve for controlling pressure and flow according to claim 1, wherein: a through hole is formed in the position, close to the water outlet, of the diversion water pipe, the top end of the main valve block is close to the through hole and matched with the through hole in size, and a sealing ring is sleeved on the periphery of the through hole.

5. The water injection valve of claim 2 wherein: the two filter plates are arranged in sequence.