CN202100769U - Vacuum shut off valve - Google Patents

Vacuum shut off valve Download PDF

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Publication number
CN202100769U
CN202100769U CN201120187168XU CN201120187168U CN202100769U CN 202100769 U CN202100769 U CN 202100769U CN 201120187168X U CN201120187168X U CN 201120187168XU CN 201120187168 U CN201120187168 U CN 201120187168U CN 202100769 U CN202100769 U CN 202100769U
Authority
CN
China
Prior art keywords
valve
dish
sealing gasket
bonnet
convexity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201120187168XU
Other languages
Chinese (zh)
Inventor
梅静容
祝云霞
王朝阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NINGBO HUACHENG VALVE CO Ltd
Original Assignee
NINGBO HUACHENG VALVE CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NINGBO HUACHENG VALVE CO Ltd filed Critical NINGBO HUACHENG VALVE CO Ltd
Priority to CN201120187168XU priority Critical patent/CN202100769U/en
Application granted granted Critical
Publication of CN202100769U publication Critical patent/CN202100769U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a vacuum shut off valve, which includes a valve body (1) for accommodating an exhaust valve and a check valve, and a spring (7), wherein the exhaust valve includes a hollow valve bonnet (3), an upper sealing gasket (5) and an upper disk (6), wherein the valve bonnet (3) is arranged at the upper end of the valve body (1), and a through hole of the valve bonnet (3) is communicated with the outside; the upper disk (6) is in sliding fit in the through hole of the valve bonnet (3); a first spacing ring (6.1) for axially spacing the upper disk (6) radially extends from the outer wall of the upper disk (6); the upper sealing gasket (5) is annular and arranged on the upper surface of the first spacing ring (6.1) of the upper disk (6); and a bulge (6.1.1) for partially padding up the upper sealing gasket (5) is arranged on the upper surface of the first spacing ring (6.1). The vacuum shut off valve has simple structure, light weight and low cost.

Description

Vacuum breaker
Technical field
The utility model relates to a kind of valve, relates to a kind of vacuum breaker or rather.
Background technique
Vacuum breaker is a kind of being installed in the potable water system, can prevent inhaling under the situation of rainbow the special valve that possesses specific function in the potable water system that flows backwards of the impure water behind the valve.Vacuum breaker comprises valve body, cover cap, bonnet, goes up seal ring, goes up sealing gasket, goes up dish, first spring, lower wall, lower seal pad, lower seal and valve seat.Described bonnet, go up seal ring, go up sealing gasket and go up dish and form outlet valve.Described valve seat, lower seal, lower seal pad and lower wall form safety check.
Described bonnet is a hollow, is fixed between upper end and the described bonnet and the valve body of described valve body the described seal ring of going up is installed.The described dish of going up is slidingly fitted in the through hole of described bonnet.Radial projection is provided with first limited ring that is used for last dish is carried out axial limiting on the outer wall of described upward dish.The described sealing gasket of going up is an annular, is located at the described upper surface of going up first limited ring of dish, during exhaust valve closure, and the circulation of described upward sealing gasket sealed bonnet through hole block gas.Described valve seat is a hollow, is fixed between lower end and the described valve seat and the valve body of described valve body described lower seal is installed.Described lower wall is slidingly fitted in the through hole of described valve seat.Radial projection is provided with second limited ring that is used for lower wall is carried out axial limiting on the outer wall of described lower wall.Described lower seal pad is an annular, be located at described lower wall the lower surface of second limited ring, during closure of check ring, described lower seal pad seal valve seat through hole blocking-up current are logical.The upper end of described first spring is located at described lower end of going up dish, and the lower end of described first spring is located at the upper end of described lower wall.
Can be provided with one second spring between the last sealing gasket of the vacuum breaker of existing technology and the first limited ring upper surface; Purpose is to go up sealing gasket when receiving the pressure of the regulation that is near the mark; Last sealing gasket is against the part meeting projection on described second spring; Make to go up other parts of sealing gasket can not with the face seal of valve gap through hole end, just have gas and get into valve body and open outlet valve this moment, this kind project organization is complicated.Also can reach same purpose in addition, but this design can increase the weight of vacuum breaker, also increases cost simultaneously through increasing the weight that goes up dish.
The model utility content
The technical problem that the utility model will solve is, a kind of simple in structure, in light weight, vacuum breaker that cost is low is provided.
The technical solution of the utility model is, a kind of vacuum breaker with following structure is provided, and comprises the valve body and the spring of ccontaining outlet valve and safety check; Described outlet valve comprises the bonnet of hollow, upward sealing gasket reaches and goes up dish; Upper end and bonnet through hole that described bonnet is located at described valve body are in communication with the outside; The described dish of going up is slidingly fitted in the through hole of described bonnet; Radial projection is provided with first limited ring that is used for last dish is carried out axial limiting on the outer wall of described upward dish; The described sealing gasket of going up is an annular, and sealing gasket is located at the described upper surface of going up first limited ring of dish on this; The upper surface of described first limited ring is provided with and is used for the described convexity that goes up sealing gasket of local bed hedgehopping.
After adopting above structure, the utility model vacuum breaker compared with prior art has the following advantages:
Because the upper surface of first limited ring of the vacuum breaker of the utility model is provided with the convexity that is used for sealing gasket on the local bed hedgehopping; When last sealing gasket receives the pressure of the regulation that is near the mark; Last sealing gasket is against the part meeting projection on the convexity; Make to go up other parts of sealing gasket can not with the face seal of valve gap through hole end, just have gas and get into valve body and open outlet valve this moment, the vacuum breaker of this kind structure is simple in structure, in light weight, cost is low.
As a kind of improvement of the utility model, described convexity and described upward dish are one-body molded.Adopt this kind structure, reliability is high.
Another kind as the utility model improves, and described convexity is the rib of semi circular surface for cross section.The axis of described convexity equates with the width of described first limited ring with the axes intersect of described first limited ring and the length of described convexity.Described convexity is one.This kind is designed to optimum implementation.
Description of drawings
Fig. 1 is the structural representation of the utility model vacuum breaker.
Fig. 2 is the sectional structure schematic representation of going up dish of the utility model vacuum breaker.
Fig. 3 is the plan structure schematic representation of going up dish of the utility model vacuum breaker.
Fig. 4 is the part-structure schematic representation that the K direction is looked among Fig. 2.
Shown in the figure: 1, valve body, 2, cover cap, 3, bonnet, 4, go up seal ring, 5, go up sealing gasket, 6, go up dish, 6.1, first limited ring, 6.1.1, convexity, 7 springs, 8, lower wall, 8.1, second limited ring, 9, the lower seal pad, 10, lower seal, 11, valve seat.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
See also Fig. 1 to shown in Figure 4, the vacuum breaker of the utility model comprises valve body 1, cover cap 2, bonnet 3, goes up seal ring 4, goes up sealing gasket 5, on coil 6, spring 7, lower wall 8, lower seal pad 9, lower seal 10 and valve seat 11.Described bonnet 3, go up seal ring 4, go up sealing gasket 5 and go up dish 6 and form outlet valves.Described valve seat 11, lower seal 10, lower seal pad 9 and lower wall 8 form safety check.
The equal opening in the top and bottom of described valve body 1.Described bonnet 3 is a hollow, and this bonnet 3 is fixed on the upper end of described valve body 1, bonnet 3 through holes and extraneous and valve body 1 intracavity inter-connection.The described seal ring 4 of going up is installed between described bonnet 3 and the valve body 1, and purpose is to block under the situation of bonnet 3 through holes at last sealing gasket 5, avoids air or water to pass through from bonnet 3 and valve body 1 joint.The described dish 6 of going up is slidingly fitted in the through hole of described bonnet 3.Radial projection is provided with first limited ring 6.1 that is used for last dish 6 is carried out axial limiting on the outer wall of described upward dish 6.The described sealing gasket 5 of going up is an annular, is located at the described upper surface of going up dish 6 first limited rings 6.1, and during exhaust valve closure, described upward sealing gasket 5 sealed bonnet, 3 through hole block gas or water pass through.The upper surface of described first limited ring 6.1 is provided with and is used for the described protruding 6.1.1 that goes up sealing gasket 5 of local bed hedgehopping.Described protruding 6.1.1 and described upward dish 6 are one-body molded.Described protruding 6.1.1 is that cross section is the rib of semi circular surface.The axis of described protruding 6.1.1 equates with the width of described first limited ring 6.1 with the axes intersect of described first limited ring 6.1 and the length of described protruding 6.1.1.In this specific embodiment, described protruding 6.1.1 is one.
Described valve seat 11 is a hollow, and this valve seat 11 is fixed in the lower end of described valve body 1.Described valve body 1 lower end is connected with intake pipe, therefore, and described valve seat 11 through holes and intake pipe pipeline and valve body 1 intracavity inter-connection.Described lower seal 10 is installed between described valve seat 11 and the valve body 1, and the effect of this lower seal 10 is similar with the effect of described upward seal ring 4.Described lower wall 8 is slidingly fitted in the through hole of described valve seat 11.Radial projection is provided with second limited ring 8.1 that is used for lower wall 8 is carried out axial limiting on the outer wall of described lower wall 8.Described lower seal pad 9 is an annular, is located at the lower surface of second limited ring 8.1 of described lower wall 8, and during closure of check ring, described lower seal pad 9 seal valve seats 11 through holes blocking-up water passes through.
The upper end of described spring 7 is located at described lower end of going up dish 6, and the lower end of described spring 7 is located at the upper end of described lower wall 6.Height when described spring 7 is not compressed is less than the distance between described bonnet 3 lower end surfaces and valve seat 11 upper-end surfaces.The sidewall of described valve body 1 is provided with outlet, and this outlet is connected with outlet pipe.
When intake pipe had water to get into, current can promote lower wall and slide, and lower wall is moved upward; Lower wall moves upward and can promote spring and last dish moves upward, and runs into when the last sealing gasket of lower wall and goes up when coiling the lower end surface, and next spring will be compressed; The dish through hole is gone up in last sealing gasket sealing; This moment, safety check was opened, and outlet valve is closed, and water flows out from outlet pipe.When intake pipe was cut off the water supply suddenly, the pressure of lower wall below diminished suddenly, when the pressure of pressure below the lower wall and last dish top is close; Last sealing gasket is against the part meeting projection on the convexity; Make other parts of sealing gasket can not with the face seal of valve gap through hole end, get into valve body and rapidly open outlet valve with regard to having gas this moment, closes safety check; Water in the outlet pipe is flowed out from the valve body upper end, can not blow back into the turnover pipe and polluted source.

Claims (5)

1. vacuum breaker comprises the valve body (1) and the spring (7) of ccontaining outlet valve and safety check; Described outlet valve comprises the bonnet (3) of hollow, upward sealing gasket (5) reaches and goes up dish (6); Upper end and bonnet (3) through hole that described bonnet (3) is located at described valve body (1) are in communication with the outside; The described dish (6) of going up is slidingly fitted in the through hole of described bonnet (3); Radial projection is provided with first limited ring (6.1) that is used for last dish (6) is carried out axial limiting on the outer wall of described upward dish (6); The described sealing gasket (5) of going up is an annular, and sealing gasket on this (5) is located at the described upper surface of going up first limited ring (6.1) of dish (6); It is characterized in that: the upper surface of described first limited ring (6.1) is provided with and is used for the described convexity (6.1.1) that goes up sealing gasket (5) of local bed hedgehopping.
2. vacuum breaker according to claim 1 is characterized in that: described convexity (6.1.1) is one-body molded with described upward dish (6).
3. vacuum breaker according to claim 1 and 2 is characterized in that: described convexity (6.1.1) is the rib of semi circular surface for cross section.
4. vacuum breaker according to claim 3 is characterized in that: the axis of described convexity (6.1.1) equates with the width of described first limited ring (6.1) with the axes intersect of described first limited ring (6.1) and the length of described convexity (6.1.1).
5. vacuum breaker according to claim 4 is characterized in that: described convexity (6.1.1) is one.
CN201120187168XU 2011-05-31 2011-05-31 Vacuum shut off valve Expired - Fee Related CN202100769U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120187168XU CN202100769U (en) 2011-05-31 2011-05-31 Vacuum shut off valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120187168XU CN202100769U (en) 2011-05-31 2011-05-31 Vacuum shut off valve

Publications (1)

Publication Number Publication Date
CN202100769U true CN202100769U (en) 2012-01-04

Family

ID=45386783

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201120187168XU Expired - Fee Related CN202100769U (en) 2011-05-31 2011-05-31 Vacuum shut off valve

Country Status (1)

Country Link
CN (1) CN202100769U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110307361A (en) * 2019-08-05 2019-10-08 浙江卡博铜业有限公司 A kind of vacuum breaker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110307361A (en) * 2019-08-05 2019-10-08 浙江卡博铜业有限公司 A kind of vacuum breaker

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120104

Termination date: 20170531