CN201051467Y

CN201051467Y - Wind pressure switch

Info

Publication number: CN201051467Y
Application number: CNU2007201093738U
Authority: CN
Inventors: 臧琛瑶
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-14
Filing date: 2007-05-14
Publication date: 2008-04-23
Anticipated expiration: 2017-05-14

Abstract

A wind pressure switch comprises a base, a cover lid, a diaphragm, and an inching switch, and is characterized in that a support is fixedly connected on the cover lid, the inching switch is mounted on the support, the middle portion of the cover lid is upwardly projected to form an upper air chamber at the lower side of the middle portion, the base is provided with a lower air chamber, a left air faucet, and a right air faucet, and a lower top piece is arranged on the lower air chamber, a gasket and the diaphragm are arranged on the base, an upper top piece is arranged on the diaphragm, the cover lid is fixed with the base, the left air faucet is communicated with the lower air chamber, the right air faucet is communicated with the gasket, the diaphragm, and the upper air chamber, and a bowl-shaped sealing ring is sealed at a center hole of the cover lid, and a spring is arranged in the center hole of the cover lid to be screwed with an adjusting screw. The utility model is simple in structure, and can be extensively used for automatically controlling the air-flow of buildings, detecting the clogging of a filter apparatus and the air extraction of fans, and controlling the air-flow in various pipelines. The utility model can also be applicable to controlling aspects of other energy sources, and can be used as an induction block for measuring positive pressure, negative pressure, and pressure difference. The utility model is extensive in application range and strong in position inductivity, and can be mounted at any positions.

Description

Blast switch

Technical field:

The utility model belongs to the pressure switch technical field, refers in particular to a kind of blast switch.

Background technology:

Chinese patent discloses a kind of " blast switch ", and (ZL99228900.9, open day: 2000.06.21), it had left and right housing, diaphragm and support, and a sensitive switch is rack-mount, and left and right air chamber respectively has a blow vent.The through hole of left shell is provided with touches film, and the left side of touching the contact of center membrane can contact with sensitive switch, and the right side can contact with diaphragm.Be set with a liner and a spring on the right side step of diaphragm, the spring right-hand member is resisted against to be adjusted on the screw.This blast switch not only control range is wide, and highly sensitive, good reliability.It is applicable to the safety device of family expenses pressure air-exhaust type gas heater, domestic gas boiler and air purifier.But it has many improved places that are worth, and location sensitive is not strong.

The utility model content:

The purpose of this utility model is that prior art is improved, and a kind of blast switch is provided, and it is simple in structure, applied range, and location sensitive is strong, can be installed in any position.

For achieving the above object, the solution that the utility model is taked is: a kind of blast switch, it comprises pedestal, cover cap, diaphragm and sensitive switch, be fixed with support on the cover cap, sensitive switch is installed on the support, epirelief in the middle of the cover cap and below become upper chamber, pedestal has lower chamber, left side valve and right valve, once top flat is placed on the lower chamber, and a liner and diaphragm are placed on the pedestal, one top piece is placed on the diaphragm, cover cap and pedestal are fixed together, and left valve leads to lower chamber, and right valve leads to liner, diaphragm, upper chamber, one bowl ring closing cap mesopore, a spring are put into the adjustment screw of screwing on behind the pedestal mesopore.

The utlity model has lower chamber, thus both can upper chamber or lower chamber utilize malleation or negative pressure to control the diaphragm action separately to make the sensitive switch action, work simultaneously and control the diaphragm action by pressure reduction and make the sensitive switch action thereby also can go up lower chamber.

The utility model is simple in structure, can be widely used in the building air mass flow controls automatically, detect that filter blocks, fan are bled, the application of various ducted air flows and other energy control aspect etc., and can be used as the inductor of measuring malleation, negative pressure and differential pressure, applied range, location sensitive is strong, can be installed in any position.

Description of drawings:

Fig. 1 is the explosive view of present embodiment.

Among the figure: 1, rivet, 2, sensitive switch, 3, support, 4, bowl ring, 5, cover cap, 6, rivet, 7, top piece, 8, diaphragm, 9, liner, 10, top flat down, 11, pedestal, 12, spring, 13, adjust screw, 14, left valve, 15, right valve.

Embodiment:

Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.

Referring to Fig. 1, a kind of blast switch, it comprises pedestal 11, cover cap 5, diaphragm 8 and sensitive switch 2, be fixed with support 3 on the cover cap 5, sensitive switch 2 is installed on the support 3, epireliefs in the middle of the cover cap 5 and below become upper chamber, pedestal 11 has lower chamber, left side valve 14 and right valve 15, once top flat 10 is placed on the lower chamber, and a liner 9 and diaphragm 8 are placed on the pedestal 11, one top piece 7 is placed on the diaphragm 8, cover cap 5 is fixed together with pedestal 11, left valve 14 logical lower chambers, right valve 15 logical liners 9, diaphragm 8, upper chamber, one bowl ring, 4 closing caps, 5 mesopores, a spring 12 are put into to screw on behind pedestal 11 mesopores and are adjusted screw 13.

Present embodiment utilizes malleation or negative pressure differential pressure to facilitate sensitive switch accurately to beat under the pressure of selecting, and the pressure of selection provides by adjusting screw 13 adjustment, and differential pressure generating is in atmosphere and malleation or negative pressure or any two given different pressure.When upper chamber and the variation of lower chamber generation pressure, diaphragm 8 will activate sensitive switch on the value that expection is established.Its range of application is sent signal positive and negative, zero air movement as surveying the air flows on the powerful drafting tool, closes the steam heating pipe air-conditioning of obstruction, monitors faint or dangerous burning, and indication is filtered too dirty or invalid.Its tool location sensitive can be installed in any position and only need calibrate.The medium that it is suitable for has air, burning gases, LP or natural gas.

Claims

1. blast switch, it comprises pedestal (11), cover cap (5), diaphragm (80 and sensitive switch (2), cover cap is fixed with support (30 on (5), support (3) is gone up sensitive switch (2) is installed, it is characterized in that: epirelief in the middle of the cover cap (5) and below become upper chamber, pedestal (11) has lower chamber, left side valve (14) and right valve (15), once top flat (10) is placed on the lower chamber, one liner (9) and diaphragm (8) are placed on the pedestal (11), one top piece (7) is placed on the diaphragm (8), cover cap (5) is fixed together with pedestal (11), the logical lower chamber of left side valve (14), the logical liner (9) of right valve (15), diaphragm (8), upper chamber, a bowl ring (4) closing cap (5) mesopore, a spring (12) are put into to screw on behind pedestal (11) mesopore and are adjusted screw (13).