CN204348611U

CN204348611U - Blast switch

Info

Publication number: CN204348611U
Application number: CN201420658213.9U
Authority: CN
Inventors: 蔡庆功; 周俊招
Original assignee: DONGGUAN TUOSHENGSI ELECTRONIC TECHNOLOGY CO LTD
Current assignee: DONGGUAN TUOSHENGSI ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2014-11-06
Filing date: 2014-11-06
Publication date: 2015-05-20
Anticipated expiration: 2024-11-06

Abstract

The utility model discloses a kind of blast switch, comprise blast chamber pressure adjustment module and shell fragment pressure fine setting module, blast chamber pressure adjustment module comprises blast chamber body, spring and set screw, blast chamber body comprises lid, diaphragm assembly, barrier film pressure ring, barrier film and housing, lid is provided with adjustment screw, spring and set screw are inserted in successively and regulate in screw, shell fragment pressure fine setting module is installed in shell fragment pressure fine setting module installation cavity, shell fragment pressure fine setting module comprises shell fragment system, differential pressure fine adjustment screw, pressure fine adjustment screw and lock screw, shell fragment system comprises the mounting cover that bottom offers some terminal-mounting grooves, be placed in the NC terminal assemblies in corresponding terminal-mounting grooves, NO terminal assemblies, COM terminal shell fragment assembly and the active force shell fragment be installed on COM terminal shell fragment assembly, pressure fine adjustment screw, differential pressure fine adjustment screw and lock screw rotary insertion are located at the top of mounting cover.This blast switch duty is few, precision is high and cost-saving.

Description

Blast switch

Technical field

The utility model relates to electric mechanical switch, particularly relates to a kind of blast switch.

Background technology

Blast switch is mainly used in detecting devices, and the gas flow in machinery etc., magnitude of pressure differential, pressure size etc., are usually used in gas heater, gas fired boiler, on wall-hung boiler etc.

Existing blast switch is all generally be made up of blast chamber and sensitive switch, and sensitive switch is arranged on blast cavity, and gas, by the diaphragm assembly of inside, blast chamber, makes sensitive switch realize the action of switch.And the general volume of sensitive switch is comparatively large, and be fixed on blast cavity by modes such as rivets, not only volume is large but also because mechanical presses, fit-up gap etc.Cause blast switch to there is the defects such as precision is low, in addition, if sensitive switch breaks down, then to changing by sensitive switch, whole product can only be scrapped, the very large wasting of resources will be caused.

Blast switch is due to the required precision of itself, to sensitive switch differential force, operating physical force, the stability of restoring force has very high requirement, and sensitive switch itself also exists the suitability with blast switch cavity, so the force value in process of production for reaching regulation often needs Ageing Treatment and repeatedly debugs blast switch, in normal processing procedure, for ensureing blast switch not because transport or vibration make pressure change, often glue is added to set screw.And debugging repeatedly repeatedly will cut out glue and adds glue again and fix, therefore manufacturing cost can be very high, and dig glue glue chip can be caused to fall in switch, allows switch occur abnormal.

Because the volume of sensitive switch own is also larger, so add Switch main body, total volume just can be very large, a kind of is without sensitive switch, but the direction of valve and terminal is orthogonal, this kind of mode just not only will have valve flexible pipe to install to patch space also will stay in terminal direction to patch space in valve direction.In addition, the precision of blast switch controls primarily of two parts, a part is blast cavity portion, a part is sensitive switch part, when two parts being combined the problem that just there is a matching error, and due to the in-built problem of fine motion itself and assembly relation, its operating physical force, restoring force, differential force are unstable, and two is that precision is low.So the precision of product is just difficult to control.

For the problems referred to above, the blast switch that urgently a kind of duty is few, precision is high and cost-saving.

Utility model content

The purpose of this utility model is to provide the blast switch that a kind of duty is few, precision is high and cost-saving.

To achieve these goals, the technical solution of the utility model is: provide a kind of blast switch, comprise blast chamber pressure adjustment module and shell fragment pressure fine setting module, described blast chamber pressure adjustment module comprises blast chamber body, spring and set screw, described blast chamber body comprises lid, diaphragm assembly, barrier film pressure ring, barrier film and housing, the bottom of described housing is provided with barrier film location notch and diaphragm assembly location notch, described barrier film is placed in described barrier film location notch, described barrier film pressure ring to be installed in described housing outside corresponding described barrier film, described diaphragm assembly is arranged in the outside of described barrier film pressure ring and is placed in described diaphragm assembly location notch, described lid and described housing fix mutually, the middle part of described lid offers adjustment screw, described spring and described set screw are inserted in described adjustment screw successively, the top of described housing offers shell fragment pressure fine setting module installation cavity, the sidewall of described housing and the sidewall of described lid are equiped with malleation valve and negative pressure valve respectively, described shell fragment pressure fine setting module is installed in described shell fragment pressure fine setting module installation cavity, and described shell fragment pressure fine setting module comprises shell fragment system, differential pressure fine adjustment screw, pressure fine adjustment screw and lock screw, described shell fragment system comprises mounting cover, NC terminal assemblies, NO terminal assemblies, COM terminal shell fragment assembly and active force shell fragment, the bottom of described mounting cover offers NC terminal assemblies location notch, NO terminal assemblies location notch and COM terminal shell fragment assembly location notch, described NC terminal assemblies, NO terminal assemblies, COM terminal shell fragment assembly is placed in described NC terminal assemblies location notch respectively, in NO terminal assemblies location notch and COM terminal shell fragment assembly location notch, described NC terminal assemblies, NO terminal assemblies, COM terminal shell fragment assembly, the trend of malleation valve and negative pressure valve is consistent, and described active force shell fragment is installed on described COM terminal shell fragment assembly, and the top of described mounting cover offers pressure fine setting screw, differential pressure fine setting screw and locking screw holes, described pressure fine adjustment screw, described differential pressure fine adjustment screw and lock screw respectively rotary insertion are located at pressure fine setting screw, differential pressure is finely tuned in screw and locking screw holes.

Described COM terminal shell fragment assembly comprises spring plate, determines shell fragment, COM terminal and stator, describedly determines shell fragment and is riveted on described COM terminal, and described spring plate is riveted on described stator, and described stator and described COM terminal are riveted mutually.

Compared with prior art, the utility model blast switch duty is few, precision is high, cost-saving and avoid the glue chip repeatedly digging glue and cause owing to repeatedly digging glue to enter the problem of interiors of products.

By following description also by reference to the accompanying drawings, the utility model will become more clear, and these accompanying drawings are for explaining embodiment of the present utility model.

Accompanying drawing explanation

Fig. 1 is the structure chart of the utility model blast switch.

Fig. 2 is the exploded view of the utility model blast switch.

Fig. 3 is the partial exploded view of the utility model blast switch.

Fig. 4 is the Local map of the utility model blast switch.

Fig. 5 is the structure chart of a housing angle of the utility model blast switch.

Fig. 6 is the structure chart of a mounting cover angle of the utility model blast switch.

Embodiment

Referring to figs. 1 to Fig. 6, the utility model blast switch 100 comprises blast chamber pressure adjustment module 10 and shell fragment pressure fine setting module 20.

Described blast chamber pressure adjustment module 10 comprises blast chamber body 11, spring 12 and set screw 13.Described blast chamber body 11 comprises lid 111, diaphragm assembly 112, barrier film pressure ring 113, barrier film 114 and housing 115.The bottom of described housing 115 is provided with barrier film location notch 1153 and diaphragm assembly location notch 1154, and described barrier film 114 is placed in described barrier film location notch 1153, and described barrier film pressure ring 113 to be installed in described housing 115 outside corresponding described barrier film 114.Described diaphragm assembly 112 is arranged in the outside of described barrier film pressure ring 113 and is placed in described diaphragm assembly location notch 1154.Described lid 111 fixes mutually with described housing 115.The middle part of described lid 111 offers and regulates screw 1111, and described spring 12 and described set screw 13 are inserted in described adjustment screw 1111 successively, and the top of described housing 115 offers shell fragment pressure fine setting module installation cavity 1151.The sidewall of described housing 115 and the sidewall of described lid 111 are equiped with malleation valve 1152 and negative pressure valve 1112 respectively.

Described shell fragment pressure fine setting module 20 is installed in described shell fragment pressure fine setting module installation cavity 1151, described shell fragment pressure fine setting module 20 comprises shell fragment system, differential pressure fine adjustment screw 22, pressure fine adjustment screw 23 and lock screw 24, and described shell fragment system 21 comprises mounting cover 211, NC terminal assemblies 212, NO terminal assemblies 213, COM terminal shell fragment assembly 214 and active force shell fragment 215.The bottom of described mounting cover 211 offers NC terminal assemblies location notch 2114, NO terminal assemblies location notch 2115 and COM terminal shell fragment assembly location notch 2116.Described NC terminal assemblies 212, NO terminal assemblies 213, COM terminal shell fragment assembly 214 are placed in described NC terminal assemblies location notch 2114, NO terminal assemblies location notch 2115 and COM terminal shell fragment assembly location notch 2116 respectively.The trend of described NC terminal assemblies 212, NO terminal assemblies 213, COM terminal shell fragment assembly 214, malleation valve 1152 and negative pressure valve 1153 is consistent.Described active force shell fragment 215 is installed on described COM terminal shell fragment assembly 214.The top of described mounting cover 211 offers pressure fine setting screw 2111, differential pressure fine setting screw 2112 and locking screw holes 2113.Described pressure fine adjustment screw 23, described differential pressure fine adjustment screw 22 and lock screw 24 respectively rotary insertion are located in pressure fine setting screw 2111, differential pressure fine setting screw 2112 and locking screw holes 2113.

Particularly, described COM terminal shell fragment assembly 214 comprise spring plate 2141, determine shell fragment 2142, COM terminal 2143 and stator 2144.Describedly determine shell fragment 2142 and be riveted on described COM terminal 2143, described spring plate 2141 is riveted on described stator 2144.Described stator 2144 is riveted mutually with described COM terminal 2143.

The utility model blast switch 100 is divided into blast chamber pressure adjustment module 10 and shell fragment pressure fine setting module 20 two parts, and function is completely independent, and wherein any one badly all can not cause whole blast switch to scrap, thus reduces switch scrap cost.Shell fragment pressure fine setting module 20 can also to the pressure of product, and different drive is finely tuned, thus solves the problem that blast switch precision is low in the past; In addition, need to regulate pressure fine adjustment screw 2111 or differential pressure fine adjustment screw 2112, revise the force value drift of product, can avoid cutting out set screw and fix glue, thus the risk of switch internal fallen into by glue when avoiding digging glue, reduce because digging the unknown losses and Cost Problems that glue causes simultaneously.

The utility model blast switch duty is few, precision is high, cost-saving and avoid the glue chip repeatedly digging glue and cause owing to repeatedly digging glue to enter the problem of interiors of products.

More than in conjunction with most preferred embodiment, the utility model is described, but the utility model is not limited to the embodiment of above announcement, and amendment that the various essence according to the present embodiment carries out, equivalent combinations should be contained.

Claims

1. a blast switch, is characterized in that, comprising:

Blast chamber pressure adjustment module, described blast chamber pressure adjustment module comprises blast chamber body, spring and set screw, described blast chamber body comprises lid, diaphragm assembly, barrier film pressure ring, barrier film and housing, the bottom of described housing is provided with barrier film location notch and diaphragm assembly location notch, described barrier film is placed in described barrier film location notch, described barrier film pressure ring to be installed in described housing outside corresponding described barrier film, described diaphragm assembly is arranged in the outside of described barrier film pressure ring and is placed in described diaphragm assembly location notch, described lid and described housing fix mutually, the middle part of described lid offers adjustment screw, described spring and described set screw are inserted in described adjustment screw successively, the top of described housing offers shell fragment pressure fine setting module installation cavity, the sidewall of described housing and the sidewall of described lid are equiped with malleation valve and negative pressure valve respectively, and the shell fragment pressure fine setting module be installed in described shell fragment pressure fine setting module installation cavity, described shell fragment pressure fine setting module comprises shell fragment system, differential pressure fine adjustment screw, pressure fine adjustment screw and lock screw, described shell fragment system comprises mounting cover, NC terminal assemblies, NO terminal assemblies, COM terminal shell fragment assembly and active force shell fragment, the bottom of described mounting cover offers NC terminal assemblies location notch, NO terminal assemblies location notch and COM terminal shell fragment assembly location notch, described NC terminal assemblies, NO terminal assemblies, COM terminal shell fragment assembly is placed in described NC terminal assemblies location notch respectively, in NO terminal assemblies location notch and COM terminal shell fragment assembly location notch, described NC terminal assemblies, NO terminal assemblies, COM terminal shell fragment assembly, the trend of malleation valve and negative pressure valve is consistent, and described active force shell fragment is installed on described COM terminal shell fragment assembly, and the top of described mounting cover offers pressure fine setting screw, differential pressure fine setting screw and locking screw holes, described pressure fine adjustment screw, described differential pressure fine adjustment screw and lock screw respectively rotary insertion are located at pressure fine setting screw, differential pressure is finely tuned in screw and locking screw holes.

2. blast switch as claimed in claim 1, it is characterized in that: described COM terminal shell fragment assembly comprises spring plate, determines shell fragment, COM terminal and stator, describedly determine shell fragment and be riveted on described COM terminal, described spring plate is riveted on described stator, and described stator and described COM terminal are riveted mutually.