CN200999920Y

CN200999920Y - Pressure-limiting and waterway controlling valve

Info

Publication number: CN200999920Y
Application number: CNU2007200783350U
Authority: CN
Inventors: 刘文庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-29
Filing date: 2007-01-29
Publication date: 2008-01-02
Anticipated expiration: 2017-01-29

Abstract

The utility model discloses a pressure limiting and a water way controlling valve, which can create automatic water pressure control, has water way controlling function and in particular is suitable for household water purifiers. A water outlet cavity and a water inlet cavity are arranged in the valve body, and therein, a main sealing component which is exerted with the water pressure function to form sealing to the main sealing opening in the water outlet cavity inner end is arranged, and a pressure bearing cavity and an opening and closing water cavity are arranged in the valve body and arranged with a controlling rod; a flow guiding through hole and a water hole connecting the water cavity and the pressure bearing cavity are arranged on the main sealing component, and the cross sectional area of the water hole is smaller that the cross sectional area of the flow guiding through hole; the upper part of the controlling rod is axially inserted into the flow guiding through hole, and an auxiliary sealing component which elastic function exerted at the upper end part of the controlling rod can form sealing to the flow guiding through hole is arranged inn the pressure bearing cavity; a sealed pressure sensing membrane component which divides the water outlet cavity and the opening and closing water cavity is installed at the lower part of the controlling rod.

Description

Pressure limiting and water route control valve

Technical field

The utility model relates to a kind of valve, relate in particular to a kind of pressure limiting and water route control valve that is applied to domestic water purifying machine, it is that the domestic water purifying machine that filters core cell provides the technological scheme that a kind of water route is controlled and hydraulic pressure is controlled that this pressure limiting and water route control valve can be with the reverse osmosis membrane.

Background technique

Along with expanding economy, the trend that water resources situation worsens has appearred in many places, and shortage of water resources and pollution are more and more serious, and city dweller's drinking water safety problem highlights.At the secondary pollution problem of city tap-water and because source water pollutes the harmful matter that renews in tap water, more and more be that the domestic water purifying machine of core filter element enters huge numbers of families with the reverse osmosis membrane.Existing domestic water purifying machine is to be the core filter element with the reverse osmosis membrane, through after the multistage pretreatment and supercharging to tap water, enters reverse osmosis membrane unit again, the pure water that produces can meet the drinking water standard of developed country fully.But, in existing domestic water purifying machine, the control of its water route control and operation hydraulic pressure adopts the preposition ball valve of cutting off the water supply, reduction valve and the solenoid valve of cutting off the water supply to realize, this control system complex structure, security and stability is lower, cost is too high, is difficult to reduce the cost of production of domestic water purifying machine, is unfavorable for popularizing.

The model utility content

Technical problem to be solved in the utility model provides a kind of pressure limiting and water route control valve, and catchment road control and hydraulic pressure of this control valve is regulated in one, simple and compact structure, thus help reducing the cost of production of domestic water purifying machine.

The technological scheme that its technical problem that solves the utility model adopts is, pressure limiting of the present utility model and water route control valve, have water chamber, water-inlet cavity in the valve body, be provided with in it and can the main sealing assembly of the inner primary seal interruption-forming sealing of water chamber be is characterized in that by hydraulic action: also have pressure pocket and keying water cavity in the described valve body and be provided with controlling rod; The water port that offers the water conservancy diversion through hole on the described main sealing assembly and water-inlet cavity is communicated with pressure pocket, the cross-section area of water port is less than the cross-section area of water conservancy diversion through hole; The upper axial of described controlling rod stretches into the water conservancy diversion through hole, is provided with the secondary black box that can form sealing to the water conservancy diversion through hole that is acted on the controlling rod upper end portion by its elastic force in the pressure pocket; Be equipped with on the bottom of described controlling rod water chamber and the pressure-sensitive membrane module that opens and closes water cavity separation and sealing.

After taking technique scheme, when the hydraulic pressure in the water chamber reached setting value, it is fully descending that described pressure-sensitive membrane module drives controlling rod, and main sealing assembly is descending sealing primary seal mouth under the elastic force effect of secondary black box, make in the water chamber and no longer boost, reach the purpose of pressure limiting.Opening and closing water cavity then is connected by the suction booster of pipeline with domestic water purifying machine inside, suction booster starts the back owing to open and close the interior hydraulic pressure of water cavity greater than the hydraulic pressure in the water chamber, it is up that described pressure-sensitive membrane module drives controlling rod, and overcome the elastic force of secondary black box, makes control valve be in normal operating condition; And when suction booster is shut down, open and close the water cavity decompression, and it is fully descending that described pressure-sensitive membrane module drives controlling rod, and the main sealing assembly secondary sealed mouth of descending sealing and primary seal mouth under the elastic force effect of secondary black box, control valve stop to supply water, and realize the purpose in control water route.

The beneficial effect of the utility model pressure limiting and water route control valve is, can realize automatic water pressure control, and the start of the suction booster by domestic water purifying machine inside or shut down control automatically this control valve open water flowing or closure is cut off the water supply, catchmenting, the road is controlled and hydraulic pressure is regulated in one, realize multi-purpose valve, can replace existing domestic water purifying machine cut off the water supply ball valve, cut off the water supply solenoid valve and reduction valve fully; Simple and compact structure helps reducing the cost of production of domestic water purifying machine; Water route control rationally, and is safe and reliable to operation.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the structural representation of the utility model pressure limiting and water route control valve.

Component title and pairing mark among the figure: water outlet 1; Valve seat 2; Primary seal mouth 3; Nut 4; Main pressure-sensitive diaphragm 5; Water conservancy diversion cover 6; Controlling rod 7; Secondary sealing head 8; Secondary sealing headstock 9; Spring 10; Loam cake 11; Pressure pocket 12; Water conservancy diversion through hole 14; Water port 15; Water chamber 16; Water intake 17; Pressure-sensitive diaphragm 18; Nut 19; Sealing film 20; Pressure cap 21; Release the button 22; Joint 23; Open and close water cavity 24; Second water intake 25; Pad 26; Water-inlet cavity 27.

Embodiment

As shown in Figure 1, pressure limiting of the present utility model and water route control valve have water chamber 16, water-inlet cavity 27 in the valve body, are provided with the main sealing assembly that is subjected to hydraulic action can form sealing to water chamber 16 inner primary seal mouths 3 in it.Also have pressure pocket 12 and keying water cavity 24 in the described valve body and be provided with controlling rod 7.The water port 15 that offers water conservancy diversion through hole 14 on the described main sealing assembly and water-inlet cavity 27 is communicated with pressure pocket 12, the cross-section area of water port 15 is less than the cross-section area of water conservancy diversion through hole 14.The upper axial of described controlling rod 7 stretches into water conservancy diversion through hole 14, is provided with the secondary black box that can form sealing to water conservancy diversion through hole 14 that is acted on controlling rod 7 upper end portions by its elastic force in the pressure pocket 24.Be equipped with on the bottom of described controlling rod 7 water chamber 16 and the pressure-sensitive membrane module that opens and closes water cavity 24 separations and sealing.

As shown in Figure 1, water chamber 16 is connected with the inlet pipeline of domestic water purifying machine by its water outlet 1, water-inlet cavity 27 is connected with tap water pipe line by water intake 17, opens and closes water cavity 24 and then is connected with the water outlet of the suction booster of domestic water purifying machine inside by second water intake 25.The working principle of the utility model pressure limiting and water route control valve is as follows:

Open control valve, water-inlet cavity 27 water flowings, water chamber 16 boosts, and described pressure-sensitive membrane module pressurized is descending, and it is descending to drive controlling rod 7, seals secondary sealed mouth (water conservancy diversion through hole 14) until described secondary black box; The moisture road enters water port 15 in the water-inlet cavity 27, equates that until described main sealing assembly pressure that bear the upper and lower end face elastic force suppressing action of secondary black box is in main sealing assembly.When the hydraulic pressure in the water chamber 16 reached setting value, it is fully descending that described pressure-sensitive membrane module drives controlling rod 7, and described main sealing assembly is descending sealing primary seal mouth 3 under the elastic force effect of secondary black box, makes in the water chamber 16 and no longer boosts, and reaches the purpose of pressure limiting.As water outlet 1 continuation water outlet, hydraulic pressure descend in the water chamber 16, open and close the described pressure-sensitive membrane modules of hydraulic action in the water cavity 24, make controlling rod 7 up, and extremely secondary black box is opened; Pressure pocket 12 hydraulic pressure descend; The cross-section area of water port 15 is less than the cross-section area of water conservancy diversion through hole 14, water outlet is greater than water inlet in the pressure pocket 12, pressure descends, the upward force that the peripheral diaphragm of described main sealing assembly is subjected to is gradually greater than suffered downward power, and the whole following top power that surpasses the elastic force of described secondary black box, move on the described main sealing assembly, primary seal mouth 3 is opened, water inlet heavily again in the water chamber 16.So circulation is closed until water outlet 1.Because opening and closing water cavity 24 is connected by the suction booster of pipeline with domestic water purifying machine inside, suction booster starts the back and opens and closes the hydraulic pressure of water cavity interior 24 greater than the hydraulic pressure in the water chamber 16, it is up that described pressure-sensitive membrane module drives controlling rod 7, and overcome the elastic force of described secondary black box, make control valve be in normal operating condition; And when suction booster is shut down; open and close water cavity 24 decompressions, it is fully descending that described pressure-sensitive membrane module drives controlling rod 7, and main sealing assembly is secondary sealed mouth of descending sealing (water conservancy diversion through hole 14) and primary seal mouth 3 under the elastic force effect of secondary black box; control valve stops to supply water, and realizes the purpose in control water route.

Also show simultaneously a kind of concrete configuration form of described main sealing assembly, secondary black box, pressure-sensitive membrane module among Fig. 1.With reference to Fig. 1, the loam cake 11 that described valve body comprises valve seat 2 and is threaded with it, described main sealing assembly are pressed on by loam cake 11 on the upper end-hole position of valve seat 2, and described pressure pocket 12 is formed by the inwall of loam cake 11.Described main sealing assembly comprises main pressure-sensitive diaphragm 5 and water conservancy diversion cover 6, and water conservancy diversion through hole 14 is opened on the water conservancy diversion cover 6, and main pressure-sensitive diaphragm 5 is pressed abd fixed on the water conservancy diversion cover 6 by nut 4.Water port 15 is opened on the main pressure-sensitive diaphragm 5, and its cross-section area is less than the cross-section area of water conservancy diversion through hole 14.Described secondary black box comprises secondary sealing head 8, secondary sealing headstock 9 and spring 10, secondary sealing head 8, is installed on the secondary sealing headstock 9, and the two ends of spring 10 act on respectively on the inwall of secondary sealing headstock 9 and loam cake 11.For ease of I﹠ M, also be provided with a joint 23 that is threaded with valve seat 2 on the described valve body, open and close water cavity 24 and be positioned at this joint 23.Described pressure-sensitive membrane module comprises pressure-sensitive diaphragm 18, nut 19, and the periphery 18 of pressure-sensitive diaphragm is pressed on by joint 23 on the lower end mouth position of valve seat 2, and its central position is compressed by boss structure and nut 19, the pad 26 of controlling rod 7 bottoms.

As shown in Figure 1, be easy-to-operat, described joint 23 is provided with and acts on the button assembly that controlling rod 7 lower ends are moved it on axially.This button assembly comprises sealing film 20, pressure cap 21 and releases the button 22, and sealing film 20 is fixed on 22 the upper end of releasing the button, and pressure cap 21 is threaded with joint 23 and the periphery of sealing film 20 is fixed.

Claims

1. pressure limiting and water route control valve, have water chamber (16), water-inlet cavity (27) in the valve body, be provided with the main sealing assembly that is subjected to hydraulic action can form sealing in it, it is characterized in that: also have pressure pocket (12) and keying water cavity (24) in the described valve body and be provided with controlling rod (7) the inner primary seal mouth of water chamber (16) (3); The water port (15) that offers water conservancy diversion through hole (14) on the described main sealing assembly and water-inlet cavity (27) is communicated with pressure pocket (12), the cross-section area of water port (15) is less than the cross-section area of water conservancy diversion through hole (14); The upper axial of described controlling rod (7) stretches into water conservancy diversion through hole (14), is provided with the secondary black box that can form sealing to water conservancy diversion through hole (14) that is acted on controlling rod (7) upper end portion by its elastic force in the pressure pocket (13); Be equipped with on the bottom of described controlling rod (7) water chamber (16) and the pressure-sensitive membrane module that opens and closes water cavity (24) separation and sealing.

2. pressure limiting according to claim 1 and water route control valve, it is characterized in that: the loam cake (11) that described valve body comprises valve seat (2) and is threaded with it, described main sealing assembly is pressed on by loam cake (11) on the upper end-hole position of valve seat (2), and described pressure pocket (12) is formed by the inwall of loam cake (11).

3. pressure limiting according to claim 1 and 2 and water route control valve, it is characterized in that: described main sealing assembly comprises main pressure-sensitive diaphragm (5) and water conservancy diversion cover (6), water conservancy diversion through hole (14) is opened on the water conservancy diversion cover (6), and main pressure-sensitive diaphragm (5) is pressed abd fixed on the water conservancy diversion cover (6) by nut (4).

4. pressure limiting according to claim 2 and water route control valve, it is characterized in that: described secondary black box comprises secondary sealing head (8), secondary sealing headstock (9) and spring (10), secondary sealing head (8), be installed on the secondary sealing headstock (9), the two ends of spring (10) act on respectively on the inwall of secondary sealing headstock (9) and loam cake (11).

5. pressure limiting according to claim 2 and water route control valve is characterized in that: described valve body also comprises a joint (23) that is threaded with valve seat (2), opens and closes water cavity (24) and is positioned at this joint (23).

6. pressure limiting according to claim 5 and water route control valve, it is characterized in that: described pressure-sensitive membrane module comprises pressure-sensitive diaphragm (18), nut (19), the periphery of pressure-sensitive diaphragm (18) is pressed on by joint (23) on the lower end mouth position of valve seat (2), and its central position is compressed by boss structure and nut (19), the pad (26) of controlling rod (7) bottom.

7. according to claim 5 or 6 described pressure limitings and water route control valve, it is characterized in that: described joint (23) is provided with and acts on the button assembly that controlling rod (7) lower end is moved it on axially.

8. pressure limiting according to claim 7 and water route control valve, it is characterized in that: described button assembly comprises sealing film (20), pressure cap (21) and release the button (22), sealing film (20) is fixed on the upper end of release the button (22), and pressure cap (21) is threaded with joint (23) and the periphery of sealing film (20) is fixed.