CN201588986U

CN201588986U - Pressure-limiting valve

Info

Publication number: CN201588986U
Application number: CN2009201819378U
Authority: CN
Inventors: 彭金兴; 林裕生; 阮晓峰
Original assignee: Xiamen Yijie Sanitary Ware Co Ltd
Current assignee: Xiamen Clease Industries Co Ltd; Xiamen Yijie Sanitary Ware Co Ltd
Priority date: 2009-12-18
Filing date: 2009-12-18
Publication date: 2010-09-22
Anticipated expiration: 2019-12-18

Abstract

The utility model relates to a pressure-limiting valve which comprises a valve body, a valve cover, a valve core, a spring and a valve housing, wherein the valve body is hermetically and oppositely connected with the valve cover to form an inner cavity in the middle, the valve body is provided with a water outlet communicated with the inner cavity, a water inlet is formed at one end of the valve cover, a water supply port is formed at the other end of the valve cover and communicated with the water inlet and the inner cavity, the water outlet of the valve body is smaller than the water inlet of the valve cover, the valve core is positioned inside the inner cavity in combination with the spring and the valve housing, and the valve core can move in the axial direction inside the inner cavity. With the structure, after mounted on the pipeline that is communicated with the water consuming equipment, the pressure-limiting valve not only limits the maximal outlet water pressure in a dynamic manner but also has the static pressure-limiting function, and achieves the function of pressure-limiting protection of the water-consuming equipment and products, thereby prolonging the service life of the water-consuming equipment and products.

Description

A kind of pressure-limit valve

Technical field

The utility model relates to the field of valve, specifically is meant a kind of protection that can be applicable to sanitaryware, adjusts water pressure automatically, the pressure-limit valve of steady pressure is provided for water.

Background technique

The gondola water faucet of general watering equipment such as water treatment tank or sanitaryware; shower nozzle or the like; in use; the permission to use pressure that supplies water all there is different requirements; prevent that excessive hydraulic pressure from impacting internal structure to watering equipment and causing to a certain degree destruction; the working life of shortening equipment; thereby usually can on the pipeline of connectivity device, pressure-limit valve be set and be controlled; pressure-limit valve on the market mainly is the effect that reaches step-down by limited flow at present; water hydraulic pressure instability through this pressure-limit valve outflow; and increase with the increase that flows to pressure-limit valve hydraulic pressure; can't keep a stable water outlet hydraulic pressure; and when the water outlet of outlet terminal watering equipment is plugged; then this pressure-limit valve can't be brought into play the pressure limiting effect, fails really to reach voltage-limiting protection equipment; the purpose of product.

The model utility content

Therefore, the purpose of this utility model is to provide a kind of pressure-limit valve of realizing constant pressure and flow, and the unlikely hydraulic pressure that is subjected to of protection sanitaryware is excessive and cause damage, further prolongs its working life.

For achieving the above object, the technical solution of the utility model employing is:

A kind of pressure-limit valve, form by valve body, valve gap, spool, spring and valve pocket, described valve body is connected with valve bonnet seal is involutory, and the middle part forms an inner chamber, and this valve body has the water outlet of a communication with cavity, this valve gap one end tool water intake, the other end then is provided with the inlet of a connection water intake and inner chamber, and the water outlet of this valve body is young than the water inlet of valve gap, and described spool is positioned at this inner chamber in conjunction with spring and valve pocket, and this spool can axial displacement in inner chamber.

Described spool has bigger end of a diameter and the less axial region of a diameter, and provides a through hole, and the end of this spool cooperates with bore seal, and the axial region of spool then cooperates with valve pocket, and the valve pocket axial displacement in inner chamber relatively of this spool.

Described valve pocket sealing is located at inner chamber and is formed a flow channel with valve gap tool certain spacing.

Described spring wears the axial region of spool between the end and valve pocket of spool.

The end face of the end of described spool is provided with pad.

Adopt such scheme; pressure-limit valve of the present utility model not only can limit the highest discharge pressure dynamically; also possesses static pressure limiting function simultaneously; promptly when water outlet is plugged; still can limit the hydraulic pressure of waterexit end; watering equipment, product are really played the effect of voltage-limiting protection, protect that watering equipment, the product of some restricted water supply pressures is unlikely to be subjected to that hydraulic pressure is excessive to cause damage, and then the working life of prolongation equipment and product.

Description of drawings

Fig. 1 is the sectional view of the utility model pressure-limit valve;

Fig. 2 is the sectional view of the utility model pressure-limit valve, shows the spool operating state.

Embodiment

As shown in Figure 1, be a kind of pressure-limit valve of the present utility model, form that combination back correspondence is located on the pipeline that is communicated with watering equipment by valve body 1, valve gap 2, spool 3, spring 4 and valve pocket 5.2 involutory connections of sealing of described valve body 1 and valve gap, and the middle part forms an inner chamber 11, and described spool 3 is positioned at this inner chamber 11 in conjunction with spring 4 and valve pocket 5, and this spool 3 can move axially in inner chamber 11.

Wherein, described valve body 1 has the water outlet 12 of a communication with cavity 11, can be communicated to watering equipment; Described valve gap 2 one end tool water intakes 21, the other end then are provided with the inlet 22 of a connection water intake 21 and inner chamber 11, and the water outlet 12 of this valve body 1 is little than the water intake 21 of valve gap 2;

Described spool 3 has bigger end of a diameter 31 and the less axial region 32 of a diameter, make spool 3 ends 31 axially be subjected to the hydraulic pressure area greater than axial region 32, and spool 3 provides a through hole 33, the end 31 and the inner chamber 11 of this spool 3 are sealed and matched by seal ring 6,32 of the axial regions of spool 3 cooperate with valve pocket 5, and these spool 3 relative valve pockets 5 axially front and back displacement in inner chamber 11, and the end face of spool 3 ends 31 is provided with pad 33, with the bottom surface of the time bump inner chamber 11 that prevents that spool 3 from moving axially, these valve pocket 5 sealings are located at inner chamber 11 and are formed a flow channel 13 with valve gap 2 tool certain spacing; Described spring 4 wears the axial region 32 of spool 3 between the end 31 and valve pocket 5 of spool 3;

Be located on the pipeline behind the above-mentioned component composition, its working principle is: as shown in Figure 1, when the intake pressure of valve gap 2 water intakes 21 during less than setting value, this moment, the spool 3 of pressure-limit valve was motionless, water enters the flow channel 13 of inner chamber 11 from the water intake 21 of valve gap 2 through inlet 22, is communicated to the water outlet 12 of valve body 1 by the through hole 33 of spool 3; As shown in Figure 2, when the intake pressure of valve gap 2 water intakes 21 during greater than setting value, water is flowed out by the through hole 33 of spool 3 and acts on the bigger end 31 of spool 3 diameters, spool 3 is moved to valve gap 2 directions at the effect lower compression spring 5 of hydraulic pressure, seal flow channel 13 gradually, reduce inflow, thereby reduce the hydraulic pressure of valve body 1 water outlet 12, realize the effect of pressure limiting; And when valve body water outlet 12 was plugged, spool 3 further moved flow channel 13 until complete closed inner chamber 11 to valve gap 2 under the effect of hydraulic pressure, and then reaches the restriction effect of high discharge pressure.

As seen; pressure-limit valve of the present utility model is arranged on the pipeline that is communicated with watering equipment, not only can limit the highest discharge pressure dynamically, also possesses static pressure limiting function simultaneously; watering equipment, product are really played the effect of voltage-limiting protection and then the working life of prolongation equipment and product.

Claims

1. pressure-limit valve, it is characterized in that: form by valve body, valve gap, spool, spring and valve pocket, described valve body is connected with valve bonnet seal is involutory, and the middle part forms an inner chamber, and this valve body has the water outlet of a communication with cavity, this valve gap one end tool water intake, the other end then is provided with the inlet of a connection water intake and inner chamber, and the water outlet of this valve body is young than the water inlet of valve gap, and described spool is positioned at this inner chamber in conjunction with spring and valve pocket, and this spool can axial displacement in inner chamber.

2. a kind of pressure-limit valve as claimed in claim 1, it is characterized in that: described spool has bigger end of a diameter and the less axial region of a diameter, and provide a through hole, the end of this spool cooperates with bore seal, the axial region of spool then cooperates with valve pocket, and the valve pocket axial displacement in inner chamber relatively of this spool.

3. a kind of pressure-limit valve as claimed in claim 1 is characterized in that: described valve pocket sealing is located at inner chamber and is formed a flow channel with valve gap tool certain spacing.

4. a kind of pressure-limit valve as claimed in claim 1 is characterized in that: described spring wears the axial region of spool between the end and valve pocket of spool.

5. a kind of pressure-limit valve as claimed in claim 1 is characterized in that: the end face of the end of described spool is provided with pad.