CN206558435U - A kind of pressure switch puts film seat - Google Patents

Abstract

Film seat is put the utility model discloses a kind of pressure switch, the water pump for being made up of multiple accumulator tanks is solved, a pressure controller, the problem of cost of idleness is put into will be configured in each accumulator tank.Its drip irrigation device is that a kind of pressure switch puts film seat, film seat body is put including what is be connected with base in pressure switch, described put is provided with diaphragm between film seat body and base, and the film seat body of putting is provided with air duct, the air duct includes being used for the sprue of one accumulator tank of connection and the runner for connecting another accumulator tank, and the internal thread for connecting pipeline in accumulator tank is equipped with the air duct, reach that multiple accumulator tanks can share the purpose of a pressure switch detection.

Description

A kind of pressure switch puts film seat

Technical field

The utility model is related to pressure controller field, in particular, is related to a kind of pressure switch and puts film seat.

Background technology

Pressure switch is the device being combined with electric switch, when reaching Fluid pressure set in advance, make and break contact Action.Output alarm or control signal on the industrial equipments such as power plant, petrochemical industry, metallurgy industry are mainly used in, in industrial circle There is important purposes, the damage of important device in production engineering can be prevented, it is to avoid occur to great production accident.

Number of patent application discloses a kind of Water pump pressure controller, including bottom for CN201620319828.8 utility model Upper mounting seat and lower mounting seat are fixed with seat and case, case, diaphragm, diaphragm and bottom are fixed between lower mounting seat and base There is pressure accumulation chamber between seat, be provided between upper mounting seat and diaphragm in limiting mechanism of pressure, lower mounting seat and be hinged with gusset piece, couple The centre of plate is connected with limiting mechanism of pressure, is fixed with upper mounting seat in stationary contact spot film, upper mounting seat and is also equipped with drag hook, drag hook Top is provided with movable contact piece, and the first spring is provided between the top of drag hook and upper mounting seat, and the first spring one end is resisted against peace Fill on seat, the other end is resisted against on drag hook, and gusset piece is connected by U-shaped spring and instantaneously changing frame with the bottom of drag hook.

As shown in the patent accompanying drawing, the pressure controller only one of which and the tank connected air flow channel of pressure accumulation, and for by A pressure controller, unusual cost of idleness input will be configured in the water pump of multiple accumulator tank compositions, each accumulator tank.

Utility model content

The purpose of this utility model be to provide a kind of pressure switch put film seat, by pressure switch put film seat can simultaneously with it is multiple Accumulator tank is connected, and multiple accumulator tanks can share a pressure switch.

Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of pressure switch puts film Seat, including be connected with base in pressure switch put film seat body, it is described to put between film seat body and base provided with diaphragm, and institute State and put film seat body provided with air duct, the air duct includes being used for the sprue of one accumulator tank of connection and another for connecting The internal thread for connecting pipeline in accumulator tank is equipped with the runner of one accumulator tank, and the air duct.

By using above-mentioned technical proposal, pressure switch, which puts film seat tool, air duct and pressure accumulation chamber, for examining in sky Whether the air pressure that the air-flow flowed in gas passage is produced reaches limit value, when the air pressure change in air duct, causes pressure accumulation chamber Interior air pressure change, forces diaphragm deformation, so that elastic deformation is converted into electric signal by the element in pressure switch.With existing There is technology to compare, air duct includes sprue and runner, each runner can be passed through gas, sprue and runner can be with Multiple accumulator tanks on same water pump are connected, and when any accumulator tank pressure changes, can cause pressure accumulation chamber in pressure switch Interior air pressure change, without installing a pressure switch in each accumulator tank, has saved cost, air duct sets internal thread It is connected for the pipeline with accumulator tank, is easy to dismounting, and fixation prevents air pressure is excessive from causing air duct and accumulator tank to connect Connect disconnection.

It is of the present utility model be further disposed in, it is described put film seat body recess formation for diaphragm place annular groove, and It is flush at the top of the diaphragm with annular groove top side wall, there is the annular groove one to be located at below diaphragm and be communicated with air duct Pressure accumulation chamber.

By using above-mentioned technical proposal, pressure switch is put film seat and is connected with base, and between provided with diaphragm, opened in pressure Put and offer annular groove on film seat in pass so that in diaphragm insertion annular groove, it is to avoid diaphragm edge is exposed outside, diaphragm embedment pressure switch Top is flush with annular groove top side wall when putting in film seat, it is to avoid diaphragm is blocked up to be placed in outside annular groove, it is to avoid when pressure switch puts film When seat is fixed with base, diaphragm is blocked up to be clipped in base and pressure switch is put between film seat, and the elasticity effect of diaphragm is when fixing Locking degree.

It is of the present utility model to be further disposed in the edge of the diaphragm is provided with ring-type and downwardly convex flange, institute Annular groove madial wall is stated provided with an annular groove for flange flexible clamping.

By using above-mentioned technical proposal, set the flange of annular groove and diaphragm to coordinate, flange is connected to annular recessed In groove, enhancing diaphragm puts the fixation of film seat with pressure switch.

It is of the present utility model to be further disposed in depression forms recess to the diaphragm upper surface downwards.

By using above-mentioned technical proposal, recess is set, it is ensured that diaphragm thickness is homogeneous, thus reduce internal stress and reduce because Warpage degree caused by variable thickness, and the elastic range of increase diaphragm.

It is of the present utility model to be further disposed in the pressure accumulation chamber edge has convexed to form sealing bulge loop, the diaphragm Lower surface is recessed to be formed with sealing the groove that bulge loop coordinates, and the groove is prism close to the side of its center.

By using above-mentioned technical proposal, the cooperation of sealing bulge loop and groove so that diaphragm is placed in pressure accumulation intracavitary, increase film Piece is to the susceptibility of pressure accumulation intracavitary pressure change, and groove is provided with prism, so as to reduce the chimeric degree of sealing bulge loop and groove, just In dismounting diaphragm.

In summary, the utility model has the advantages that：In annular groove, annular groove are set during pressure switch puts film seat With pressure accumulation chamber and annular groove, diaphragm has the flange with annular groove clamping, and the side wall of pressure accumulation chamber is extended with sealing bulge loop, Diaphragm has the groove coordinated with sealing bulge loop so that diaphragm entirety embedment pressure switch is put in film seat, improves diaphragm and pressure Switch is fixed between putting film seat, prevents diaphragm from loosening, and do not influence the deformation of diaphragm again.

Brief description of the drawings

Fig. 1 is the exploded view that pressure switch puts film seat；

Fig. 2 is the sectional view that pressure switch puts film seat；

Fig. 3 is the assembling figure of pressure switch.

In figure, 1, base；11st, circuit mechanism；111st, movable contact piece；12nd, limiting mechanism of pressure；121st, spring base；13rd, couple Part；14th, venting cavity；2nd, film seat body is put；21st, location division；3rd, air duct；31st, sprue；32nd, runner；33rd, internal thread； 4th, pressure accumulation chamber；41st, bulge loop is sealed；5th, annular groove；51st, annular groove；511st, circular arc；6th, diaphragm；61st, flange；62nd, convex portion；621、 Prism；63rd, groove；64th, recess；7th, fixture；71st, through hole.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Embodiment:As depicted in figs. 1 and 2, a kind of pressure switch puts film seat, in pressure switch, including puts film seat originally Body 2, it is aluminium casting to put film seat body 2, and puts film seat body 2 with three air ducts 3, and air duct 3 includes a main flow Road 31 and three runners 32, the level of runner 32 is T-shaped to be set, and sprue 31 is vertically positioned at three middle parts of runner 32, and Internal thread 33 is equipped with sprue 31 and runner 32, the pipeline for connecting different accumulator tanks.Putting the top of film seat body 2 Portion offers annular groove 5, and annular groove 5 has a pressure accumulation chamber 4, and the lower section of pressure accumulation chamber 4 is connected with air duct 3, when in air duct 3 Air pressure when changing, the air pressure in pressure accumulation chamber 4 changes therewith.

Positioned at the top placement diaphragm 6 of pressure accumulation chamber 4 in annular groove 5, side wall one annular groove 51 of formation of annular groove 5 makes Top after diaphragm 6 is disposed is obtained to flush with the top side wall of annular groove 5.Intersect with two side through circular arc 511 bottom of annular groove 51 Transition, it is to avoid the corner stress concentration of annular groove 51.The two side of annular groove 51 is towards the inner inclination of annular groove 51, ring The angle of inclination of the side wall of connected in star 51 is 2 degree, it is ensured that easy to process in production, and the opening of annular groove 51 is reduced. The side wall of pressure accumulation chamber 4 upwardly extends to form a sealing bulge loop 41, and side of the height less than annular groove 5 that sealing bulge loop 41 extends Wall.

Diaphragm 6 is made up of elastomeric material, flexible, is sensing element in pressure switch, is reached by the deformation of diaphragm 6 The effect of pressure measurement.The edge of diaphragm 6 has a flange 61, in the insertion annular groove 51 of flange 61, the top of flange 61 for arc and It is tangent with two side so that more to be fitted with annular groove 51 when in the insertion annular groove 51 of flange 61, and due to annular groove 51 Opening be slightly reduced so that flange 61 insertion annular groove 51 in it is more firm.The lower surface of diaphragm 6 is recessed to form a groove 63, the madial wall that groove 63 is close to flange 61 is set so that the side that groove 63 is close in the lower section of diaphragm 6 forms convex portion 62, convex portion 62 are placed in the top of pressure accumulation chamber 4, and the sealing bulge loop 41 of pressure accumulation chamber 4 is placed in groove 63, the bottom of groove 63 and the top of convex portion 62 Portion reduces the chimeric degree that pressure accumulation chamber 4 seals bulge loop 41 and groove 63, diaphragm 6 easy to disassemble through the transition of prism 621.In diaphragm 6 The relevant position that top is located at convex portion 62 has recess 64, prevents the increase of the inner thickness of diaphragm 6, influences the elasticity of diaphragm 6.

Reference picture 3 and with reference to shown in Fig. 1 and Fig. 2, put on film seat body 2 has four fixtures 7 in the outside of annular groove 5, Through hole 71 is equipped with fixture 7, will put film seat body 2 for wearing screw fixes with the base 1 in pressure switch, puts film Also there is the hole that hexagon is offered in a location division 21, location division 21 on body 2, and wherein while being opening, location division 21 venting cavities 14 being used in point position pressure switch, make venting cavity 14 be fixed with base 1.

The top of base 1, which is provided with circuit mechanism 11 and limiting mechanism of pressure 12 same as the prior art, circuit mechanism 11, to be had There is movable contact piece 111, and circuit mechanism 11 is located at the top of venting cavity 14, movable contact piece 111 moves axially upwards control circuit machine The connection of circuit in structure 11.Spring base 121 in limiting mechanism of pressure 12 is connected with movable contact piece 111 by connector 13, and limit Press mechanism 12 is located at the top of diaphragm 6, and the deformation of diaphragm 6 causes spring base 121 to drive movable contact piece 111 to move, so as to influence electricity Road mechanism 11.

When the pressure switch is installed, diaphragm 6 is placed in the annular groove 5 that pressure switch is put in film seating film seat body 2, diaphragm In the 6 insertion annular groove 51 of flange 61, so that fixed diaphragm 6, puts film seating film seat body 2 by pressure switch and is worn by screw If the through hole 71 in fixture 7 is mutually fixed with base 1, air duct 3 is connected with breather line, limiting mechanism of pressure 12 and circuit mechanism 11 assemblings are finished.In use, when the air pressure change in pressure accumulation chamber 4, forcing the spring in the deformation of diaphragm 6, triggering limiting mechanism of pressure 12 Seat 121 drives movable contact piece 111 to move, and the circuit in circuit mechanism 11 is changed.

This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

Claims (5)

1. a kind of pressure switch put film seat, including with base in pressure switch（1）Connected puts film seat body（2）, it is described to put film Seat body（2）With base（1）Between be provided with diaphragm（6）, and it is described put film seat body（2）Provided with air duct（3）, its feature exists In：The air duct（3）Including the sprue for connecting an accumulator tank（31）With point for connecting another accumulator tank Runner（32）, and the air duct（3）Inside it is equipped with the internal thread for connecting pipeline in accumulator tank（33）.

2. pressure switch according to claim 1 puts film seat, it is characterised in that：It is described to put film seat body（2）Depression is formed For diaphragm（6）The annular groove of placement（5）, and the diaphragm（6）Top and annular groove（5）Top side wall is flush, the annular groove（5）Tool There is one to be located at diaphragm（6）Lower section and and air duct（3）The pressure accumulation chamber communicated（4）.

3. pressure switch according to claim 2 puts film seat, it is characterised in that：The diaphragm（6）Edge be provided with ring-type And downwardly convex flange（61）, the annular groove（5）Madial wall is provided with an annular groove for flange flexible clamping（51）.

4. pressure switch according to claim 3 puts film seat, it is characterised in that：The diaphragm（6）Upper table is recessed downwards Form recess（64）.

5. pressure switch according to claim 4 puts film seat, it is characterised in that：The pressure accumulation chamber（4）Edge is convexed to form There is sealing bulge loop（41）, the diaphragm（6）Lower surface is recessed to be formed with sealing the groove that bulge loop coordinates（63）, the groove（63） Close to diaphragm（6）The side at center is prism（621）.