CN208417649U

CN208417649U - A kind of vacuum brake with safety relief

Info

Publication number: CN208417649U
Application number: CN201821017357.0U
Authority: CN
Inventors: 凌忠生; 向前; 贾翱东
Original assignee: HANGZHOU XIANGJUN ELECTRONIC CO Ltd
Current assignee: HANGZHOU XIANGJUN ELECTRONIC CO Ltd
Priority date: 2018-06-29
Filing date: 2018-06-29
Publication date: 2019-01-22
Anticipated expiration: 2028-06-29

Abstract

The utility model discloses a kind of vacuum brakes with safety relief, including shell, inlet and outlet, case top is equipped with lid, up and down safety relief seal assembly is equipped between shell and lid, safety relief seal assembly includes interior stopper rod, support sleeve, safety relief spring between support sleeve and interior stopper rod, the cut positioning ring and non-return diaphragm and vacuum breaking diaphragm on the outside of support sleeve for being used to cooperate safety relief spring positioned at interior stopper rod bottom, lid is equipped with safety relief mouth, non-return diaphragm is between support sleeve and water inlet, vacuum breaking diaphragm is between support sleeve and lid, cut positioning ring upper end is between support sleeve and interior stopper rod.It need to only be inserted directly into when the interior stopper rod assembly of the utility model, without rotation, assemble more succinct, and cut positioning ring will not be softened, good positioning effect, while using the combination of non-return diaphragm and vacuum breaking diaphragm, so that its safety relief effect and preventing siphon effect more preferable.

Description

A kind of vacuum brake with safety relief

Technical field

The utility model relates to a kind of components of valve more particularly to a kind of vacuum brakes with safety relief.

Background technique

Currently, a variety of valves such as solenoid valve keep pressure balance in order to facilitate pressure release, prevent valve from generating siphon, often It needs to install a vacuum brake, is also needed later in the existing general vacuum breaking bar insertion shell of common vacuum brake Screwing operations are carried out, assembly is not succinct enough, and cut locating effect is poor, leads to safety relief effect and prevents siphon effect It cannot ensure.

Utility model content

The utility model provides one kind at interior stopper rod bottom to solve above-mentioned defect existing in the prior art and deficiency Portion designs cut positioning ring, need to only be inserted directly into, and without rotation, assembly is more succinct, and is supported on the outside of cut positioning ring Set limit, will not be softened, good positioning effect, while using the combination of non-return diaphragm and vacuum breaking diaphragm, so that its safety Pressure release effect and prevent siphon effect preferably with the vacuum brake of safety relief.

The technical solution of the utility model includes: a kind of vacuum brake with safety relief, including shell, setting are on shell Inlet and outlet, the case top be equipped with lid, between the shell and lid be equipped with up and down safety let out Densification sealing assembly, the safety relief seal assembly include interior stopper rod, the support sleeve covered outside interior stopper rod, are located at support sleeve and interior Safety relief spring between stopper rod is used to cooperate the cut positioning ring of safety relief spring positioned at interior stopper rod bottom and is located at Non-return diaphragm and vacuum breaking diaphragm on the outside of support sleeve, the lid are equipped with safety relief mouth, and the non-return diaphragm is located at Between support sleeve and water inlet, the vacuum breaking diaphragm is between support sleeve and lid, cut positioning ring upper end position Between support sleeve and interior stopper rod.

The utility model designs cut positioning ring in interior stopper rod bottom, so that need to only be inserted directly into when its assembly, without rotation Turn, assembly is more succinct, and set limit is supported on the outside of cut positioning ring, will not be softened, good positioning effect uses simultaneously The combination of non-return diaphragm and vacuum breaking diaphragm, so that its safety relief effect and preventing siphon effect more preferable.

Preferably, the primary diaphragm mounting groove and cooperation vacuum breaking film of cooperation non-return diaphragm are equipped on the outside of the support sleeve The secondary diaphragm mounting groove of piece, there are gap between the downside bulge loop and water inlet of the primary diaphragm mounting groove, described second There are gaps between the upside bulge loop and lid inner hole of diaphragm mounting groove.

This kind of structure ensures the installation stability of non-return diaphragm and vacuum breaking diaphragm, while ensuring in normal operating conditions Under, inlet and outlet smooth can be connected to；When water inlet generates negative pressure, water outlet and safety relief mouth can smooth companies It is logical.

Preferably, the first sealing ring is equipped between the support set upper side and interior stopper rod upper end, the interior stopper rod upper end is set There is the first sealing ring mounting groove, the second sealing ring is equipped between the shell and lid, the lid lower end is equipped with the second sealing Installing ring is enclosed, the second sealing ring installing ring is inserted into shell.

This kind of structure ensures the leakproofness between support sleeve and interior stopper rod and the leakproofness between lid and shell, simultaneously Ensure the installation stability of the first sealing ring and the second sealing ring.

Preferably, the spacing collar of the first sealing ring mounting groove of cooperation is equipped at the top of the support sleeve, the spacing collar is located at On the upside of the upside bulge loop of secondary diaphragm mounting groove.

This kind of structure further ensures that the installation stability of the first sealing ring.

Preferably, the water inlet is vertically arranged, and the water outlet and safety relief mouth are horizontally disposed, the water inlet Bottom is equipped with external screw thread linkage section.

This kind of structure makes its compact-sized, rationally distributed, solid and reliable.

Preferably, the spring base of cooperation safety relief spring is equipped on the inside of the support sleeve.

This kind of structure ensures the compressive stability of safety relief spring, it is ensured that the tension of interior stopper rod is pressed on support sleeve by it, The leakproofness of stopper rod and support sleeve in guaranteeing.

Detailed description of the invention

Fig. 1 is the decomposition diagram of the utility model；

Fig. 2 is the schematic cross-sectional view of the utility model；

1. shell in figure, 2. cut positioning rings, 3. non-return diaphragms, 4. support sleeves, 5. vacuum breaking diaphragms, 6. safety reliefs Spring, 7. first sealing rings, stopper rod in 8., 9. second sealing rings, 10. lids, 11. primary diaphragm mounting grooves, 12. secondary diaphragms Mounting groove, 13. first sealing ring mounting grooves, 14. spacing collars, 15. second sealing ring installing rings, 16. spring bases, 17. water inlets, 18. water outlet, 19. safety relief mouths, 20. screw thread construction sections.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing, but is not that model is protected to the utility model The limitation enclosed.

As illustrated in fig. 1 and 2, a kind of vacuum brake with safety relief, including shell 1, the water inlet being arranged on shell 1 Mouth 17 and water outlet 18.It is equipped with lid 10 at the top of shell 1, it is close that up and down safety relief is equipped between shell 1 and lid 10 Sealing assembly, safety relief seal assembly include interior stopper rod 8, the support sleeve 4 covered outside interior stopper rod 8, are located at support sleeve 4 and interior stopper rod Safety relief spring 6 between 8, cut positioning ring 2 and the position for being used to cooperate safety relief spring 6 positioned at interior 8 bottom of stopper rod Non-return diaphragm 3 and vacuum breaking diaphragm 5 in the outside of support sleeve 4, lid 10 are equipped with safety relief mouth 19, and 3, non-return diaphragm Between support sleeve 4 and water inlet 17, vacuum breaking diaphragm 5 is between support sleeve 4 and lid 10,2 upper end of cut positioning ring Between support sleeve 4 and interior stopper rod 8.Primary diaphragm mounting groove 11 and the cooperation of cooperation non-return diaphragm 3 are equipped on the outside of support sleeve 4 The secondary diaphragm mounting groove 12 of vacuum breaking diaphragm 5, between the downside bulge loop and water inlet 17 of primary diaphragm mounting groove 11 there are Gap, there are gaps between 10 inner hole of upside bulge loop and lid of secondary diaphragm mounting groove 12.4 upper end of support sleeve and interior stopper rod 8 The first sealing ring 7 is equipped between upper end, interior 8 upper end of stopper rod is equipped with the first sealing ring mounting groove 13, sets between shell 1 and lid 10 There is the second sealing ring 9,10 lower end of lid is equipped with the second sealing ring installing ring 15, and the second sealing ring installing ring 15 is inserted into shell 1. The spacing collar 14 of the first sealing ring mounting groove 13 of cooperation is equipped at the top of support sleeve 4, spacing collar 14 is located at secondary diaphragm mounting groove 12 Upside bulge loop on the upside of.Water inlet 17 is vertically arranged, and water outlet 18 and safety relief mouth 19 are horizontally disposed, 17 bottom of water inlet Equipped with external screw thread linkage section 20.The spring base 16 of cooperation safety relief spring 6 is equipped on the inside of support sleeve 4.

When the utility model works normally, safety relief seal assembly is withstood by the water flow pressure of water inlet positioned at highest order Set, non-return diaphragm and water inlet disengage, vacuum breaking diaphragm and lid fitting partition water outlet and safety relief mouth, water flow from into The mouth of a river smoothly flows to water outlet by the gap between support sleeve and water inlet；When water inlet generates negative pressure, let out safely Densification sealing assembly loses the support of water flow pressure, under fall on extreme lower position, non-return diaphragm and water inlet fitting partition water inlet and The water flow of water outlet, water outlet will not be returned by suck-back, prevent siphon, and vacuum breaking diaphragm and lid disengage, water outlet Mouth is connected to safety relief mouth；When water outlet does not need water outlet, water inlet hydraulic pressure becomes larger, and lets out when hydraulic pressure is greater than safety When the elastic force of pressing spring, interior stopper rod is opened, water flow smoothly flows to from safety relief mouth between interior stopper rod and support sleeve.

Claims

1. a kind of vacuum brake with safety relief, including shell, the inlet and outlet being arranged on shell, feature Be: the case top is equipped with lid, and up and down safety relief seal assembly, institute are equipped between the shell and lid Safety relief seal assembly is stated to include interior stopper rod, cover in the support sleeve outside interior stopper rod, the peace between support sleeve and interior stopper rod Full pressure release spring is used to cooperate the cut positioning ring of safety relief spring and on the outside of support sleeve positioned at interior stopper rod bottom Non-return diaphragm and vacuum breaking diaphragm, the lid are equipped with safety relief mouth, and the non-return diaphragm is located at support sleeve and water inlet Between mouthful, for the vacuum breaking diaphragm between support sleeve and lid, cut positioning ring upper end is located at support sleeve and interior Between stopper rod.

2. a kind of vacuum brake with safety relief according to claim 1, it is characterised in that: on the outside of the support sleeve The secondary diaphragm mounting groove of primary diaphragm mounting groove and cooperation vacuum breaking diaphragm equipped with cooperation non-return diaphragm, first film There are gap, the upside bulge loops and lid inner hole of the secondary diaphragm mounting groove between the downside bulge loop and water inlet of piece mounting groove Between there are gaps.

3. a kind of vacuum brake with safety relief according to claim 1, it is characterised in that: the support set upper side Between interior stopper rod upper end be equipped with the first sealing ring, the interior stopper rod upper end be equipped with the first sealing ring mounting groove, the shell and The second sealing ring is equipped between lid, the lid lower end is equipped with the second sealing ring installing ring, the second sealing ring installing ring It is inserted into shell.

4. a kind of vacuum brake with safety relief according to claim 2, it is characterised in that: at the top of the support sleeve Spacing collar equipped with the first sealing ring mounting groove of cooperation, the spacing collar are located on the upside of the upside bulge loop of secondary diaphragm mounting groove.

5. a kind of vacuum brake with safety relief according to claim 1, it is characterised in that: the water inlet is vertical Setting, the water outlet and safety relief mouth are horizontally disposed, and the water inlet bottom is equipped with external screw thread linkage section.

6. a kind of vacuum brake with safety relief according to claim 1, it is characterised in that: on the inside of the support sleeve Spring base equipped with cooperation safety relief spring.