CN2372779Y

CN2372779Y - Switch controlled by fluid pressure

Info

Publication number: CN2372779Y
Application number: CN 99220437
Authority: CN
Inventors: 杨百晨; 杨乘宇; 张宝林; 石敬业
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-09
Filing date: 1999-04-09
Publication date: 2000-04-05
Anticipated expiration: 2009-04-09

Abstract

The utility model discloses a switch controlled by fluid pressure. A non-magnetic plunger is arranged in a non-magnetic casing, wherein, both ends of which are respectively provided with a fluid inlet hole and a fluid outlet hole and the middle part of which is provided with a plunger slide way. The middle part of the plunger is provided with a positioning frame in which a permanent magnetism block is arranged. The lower side of the positioning frame is connected with a lower positioning column sheathed with a regulating spring. The lower positioning column is matched with a regulating plate matched with the fluid outlet hole through a screw thread in a sliding mode. The outer wall of the casing at the place where the fluid outlet hole is positioned is provided with a reed pipe. The utility model can effectively turn on and turn off a power supply. The utility model has the advantages of explosion proof performance, waterproof performance and preventing corrosion performance.

Description

The controllable pressure fluid switch

The utility model relates to a kind of mains switch, is specially a kind of controllable pressure fluid switch.

Using in the society at present and make in mains switch mostly be flexible type mechanical switch or electromagnetic switch, they all are to adopt control piece to realize being switched on or switched off the task of power supply by elastic construction control moving contact and fixed contact contact or the scheme of separating.Though this scheme can realize being switched on or switched off the task of power supply.Though this scheme can realize being switched on or switched off the task of power supply, have following unsurmountable defective: the one, elastic structure loses the function of switch because of it wears out easily to follow the string in long-term the use; The 2nd, arcing can appear when being in the operating state of big electric current, and its explosion-proof performance is relatively poor; The 3rd, cause waterproof, protection against the tide, Corrosion Protection relatively poor owing to its housing seal is relatively poor.

The purpose of this utility model is to provide a kind of controllable pressure fluid switch, it can not only effectively realize being switched on or switched off the task of power supply, and have explosion-proof, waterproof, protection against the tide, etch-proof characteristics, simultaneously can be according to the pressure automatic disconnection or the energized of prior setting.Can be used as appliance switch, flame-proof switch, flow switch, overpressure switch etc.

The purpose of this utility model is achieved in that the utility model comprises non magnetic housing, non magnetic plunger, permanent magnetic iron block, regulating spring, adjustable plate, tongue tube, it is characterized in that being fluid in one end inner chamber enters the hole, being fluid in its other end inner chamber portals, between fluid enters the hole and portals, form in the non magnetic housing of its diameter less than fluid passing hole diameter plunger slideway and be fitted with non magnetic plunger, the diameter of the middle part of this plunger is greater than the diameter formation posting of plunger slideway and the upside that places fluid to portal, and in its posting chamber, be positioned with permanent magnetic iron block, on the upper side of posting middle part, be connected with the traveller that bottom and plunger slideway are slidingly fitted, the plunger that its top is tapered, on the periphery of traveller, have the annular groove that is provided with O-ring seals within it, on the downside of posting middle part, be connected with the following reference column that is set with regulating spring, the inner headed face that fluid portals is provided with the adjustable plate with its threaded engagement, central part at adjustable plate is provided with the slide opening that is slidingly matched with following reference column, and its regulating spring is placed between adjustable plate and the posting, on the disc of adjustable plate, also have a plurality of through holes, on the fluid on the housing portals the lateral wall of an end, be positioned with tongue tube.

Described tongue tube can be positioned with a plurality of on the lateral wall that fluid portals.

The S-N pole orientation of above-mentioned permanent magnetic iron block parallels with the vertical center line of plunger.

According to such scheme, will be when fluid enters fluid and advances in the hole to the downward pressure of plunger one, this pressure moves down plunger after overcoming the elastic force of regulating spring, when permanent magnetic iron block is displaced downwardly to the center of tongue tube, because the magnetic force of permanent magnetic iron block makes the tongue tube adhesive, realize the task of energized, can change the pressure of regulating spring by the rotation adjustable plate in the course of the work, thereby be switched on or switched off the task of power supply when changing fluid the plunger different pressures to plunger.

Owing to adopted such scheme to the utlity model has following evident characteristic: the one, can be according to pre-determined fluid to the pressure realization automatic disconnection of plunger and the task of energized; The 2nd, owing to adopted the switch of tongue tube as power supply, its switch contact is arranged in the vacuum tube, so have explosion-proof, waterproof, protection against the tide, etch-proof characteristics; The 3rd, owing to adopted the braking force of magnetic attraction as disconnection or energized, so have handling safety, long service life, the characteristics that switch performance is good; The 4th, because overall structure is simple,, be suitable for universal characteristics so have low cost of manufacture; The 5th, can realize the task of control multiple power supplies by the scheme that a plurality of tongue tubes are set on an one housing.In sum, can effectively realize task of the present utility model.

Below the utility model is described in further detail with given with reference to the accompanying drawings embodiment.

Accompanying drawing has provided structural representation of the present utility model.

In the drawings, 1 for non magnetic housing, 2 for non magnetic plunger, 3 for the O RunddichtringO, 4 for traveller, 5 for permanent magnetic iron block, 6 for tongue tube, 7 for regulating spring, 8 for adjustable plate, 9 for through hole, 10 for the tongue tube hole, 11 for fluid portal, 12 for following reference column, 13 for screw thread, 14 for posting, 15 for the plunger slideway, 16 for annular groove, 17 be that screw thread, 18 enters the hole for fluid.

With reference to the accompanying drawings, in one end inner chamber, be fluid and enter hole 18, in its other end inner chamber, be fluid and portal 11, between its fluid passing hole 18 and 11, form in the non magnetic housing 1 of its diameter less than fluid passing hole 18 and 11 diameter plunger slideways 15 and be fitted with non magnetic plunger 2, the diameter of the middle part of this plunger 2 forms posting 14 greater than the diameter of plunger slideway 15 and places portal 11 upside of fluid, and in its posting 14 inner chambers, be positioned with permanent magnetic iron block 5, on the upper side of posting 14 middle parts, be connected with the traveller 4 that bottom and plunger slideway 15 are slidingly fitted, the non magnetic plunger 2 that its top is tapered, on the periphery of traveller 4, have the annular groove 16 that is provided with O RunddichtringO 3 within it, on the downside of posting 14 middle parts, be connected with the following reference column 12 that is set with regulating spring 7, portal 11 inner headed face of fluid is provided with adjustable plate 8 with its threaded engagement, be provided with the slide opening that is slidingly matched with following reference column 12 in the centre of adjustable plate 8, and its regulating spring 7 is placed between adjustable plate 8 and the posting 14, on the disc of adjustable plate, also have a plurality of through holes 9, on the fluid on the housing 1 portals the lateral wall of 11 1 ends, have the tongue tube hole that is provided with tongue tube within it.

With reference to the accompanying drawings, when fluid enters fluid and enters hole 18, will be to the downward pressure of plunger 2 one, this pressure moves down plunger 2 after overcoming the elastic force of regulating spring 7, when permanent magnetic iron block moves down center as for reed pipe 6, because the magnetic force of permanent magnetic iron block 5 makes tongue tube 6 adhesives, realize the task of energized.In this process since the conic section position that moves down its upper end of plunger 2 when entering fluid and portalling the through hole 9 of its fluid on adjustable plate 8 flow out.

Claims

1, the controllable pressure fluid switch, comprise non magnetic housing, non magnetic plunger, permanent magnetic iron block, regulating spring, adjustable plate, tongue tube, it is characterized in that being fluid in one end inner chamber enters the hole, being fluid in its other end inner chamber portals, between fluid enters the hole and portals, form in the non magnetic housing of its diameter less than fluid passing hole diameter plunger slideway and be fitted with non magnetic plunger, the diameter of the middle part of this plunger is greater than the diameter formation posting of plunger slideway and the upside that places fluid to portal, and in its posting chamber, be positioned with permanent magnetic iron block, on the upper side of posting middle part, be connected with the traveller that bottom and plunger slideway are slidingly fitted, the plunger that its top is tapered, on the periphery of traveller, have the annular groove that is provided with O-ring seals within it, on the downside of posting middle part, be connected with the following reference column that is set with regulating spring, the inner headed face that fluid portals is provided with the adjustable plate with its threaded engagement, central part at adjustable plate is provided with the slide opening that is slidingly matched with following reference column, and its regulating spring is placed between adjustable plate and the posting, on the disc of adjustable plate, also have a plurality of through holes, on the fluid on the housing portals the lateral wall of an end, be positioned with tongue tube.

2, controllable pressure fluid switch according to claim 1, it is a plurality of to it is characterized in that described tongue tube can be positioned with on the lateral wall that fluid portals.