CN204459381U - The valve head of impulse electromagnetic valve - Google Patents

Abstract

The utility model provides a kind of valve head of impulse electromagnetic valve, comprises shell, tapping seat, disc assembly, control unit, platen; Tapping seat is provided with into and out of fluid apertures; Disc assembly produce displacement time open/close tapping seat into and out of the runner between fluid apertures; Wherein, described control unit comprises permanent magnet, coil, coil rack, U-shaped support, dynamic iron core, static iron core; Coil rack inside offers the stroke passage holding dynamic and static iron core, and biside plate and the coil rack of U-shaped support connect and fix, and the top of U-shaped support is positioned at the top of coil rack; One end of static iron core and the top of U-shaped support are adjustable fixing, and the other end stretches in stroke passage; One end of dynamic iron core is connected with rubber cap; Dynamic iron core under magnetic field and permanent magnet effect mobile make rubber cap open/close relief hole thus driver plate assembly generation displacement; The utility model has the required precision that can reduce parts such as dynamic and static iron cores, enhances productivity.

Description

The valve head of impulse electromagnetic valve

Technical field

The utility model relates to solenoid valve market, specifically refers to a kind of impulse electromagnetic valve.

Background technique

Guide pulse electromagnetic valve domestic is at present used in the automatic control system of water circulation in a large number, and this guide pulse electromagnetic valve is made up of valve head and valve body.The utility model patent being 200949680Y as publication number discloses one " impulse electromagnetic valve ", it comprise offer into, the valve body of water outlet, valve head, valve head comprises elastomer diaphragm, travel(l)ing rest, stuffing box gland, coil, elastomer diaphragm is sleeved on travel(l)ing rest, outer periphery is on valve body, stuffing box gland is arranged on valve pocket inwall, valve body is provided with backplate, coil is placed in backplate internal upper part, sheath is provided with below coil, a pair permanent magnetic iron is provided with in sheath, backplate center of top is provided with magnetic conduction core (also known as static iron core), a dynamic iron core is provided with below magnetic conduction core, magnetic conduction in-core is provided with the spring that lower end is enclosed within dynamic iron core upper end, iron core lower end is provided with rubber cap, when this valve is in non-working state, rubber cap closes the aperture at travel(l)ing rest center.

The working principle of above-mentioned impulse electromagnetic valve is: produce a pulsed magnet field when direct impulse signal received by coil, this pulsed magnet field is contrary with permanent magnetic iron polarity, according to the magnet principle that there is a natural attraction between the sexes, dynamic iron core is attracted and moves, closing between aperture and rubber cap is removed, the current be in the cavity of aperture place flow out from aperture, so the pressure in the cavity of aperture place reduces, and owing to there is pressure reduction between water intake and cavity thus travel(l)ing rest and elastomer diaphragm can being made to be lifted, the runner in the intake-outlet of valve body is opened, , now solenoid valve is opened, when solenoid valve needs to cut out, coil receives reverse impulse signal, under making the effect of the different in nature additional spring that repels each other between dynamic iron core and static iron core, dynamic iron core moves down rubber cap closed pores, under travel(l)ing rest and elastomer diaphragm mobile closed valve intake-outlet in runner, thus make closed electromagnetic valve.

But the valve head of existing solenoid valve also exists following deficiency and defect:

1, in assembly process, dynamic distance between iron core and static iron core is difficult to hold, distance herein namely moves the stroke that iron core moves in the course of the work, cause the suction of coil after powered up between static iron core and dynamic iron core cannot attract dynamic iron core moves if stroke crosses conference, solenoid valve therefore can be caused to start; And stroke is too small, owing to just there is suction between static iron core and dynamic iron core itself, therefore there will be coil and be not also energized, and dynamic iron core is attracted by static iron core, thus solenoid valve cannot normally be worked; By finding out in prior art that the dimensional accuracy of stroke is decided by the dimensional accuracy of dynamic and static iron core, rubber cap etc., therefore the required precision of solenoid valve of the prior art to static iron core, dynamic iron core, rubber cap etc. is high, distance between after guarantee static iron core and dynamic iron core assembly reaches suitable distance, and high-precision requirement can reduce manufacturing efficiency undoubtedly and increase cost of production.

Summary of the invention

The technical problem that the utility model mainly solves is to provide a kind of impulse electromagnetic valve of enhancing productivity.

Goal of the invention of the present utility model is realized by following scheme: a kind of valve head of impulse electromagnetic valve, it comprises shell, with shell in detachable fixing tapping seat, be arranged at the disc assembly of the cavity inside that shell and tapping seat are formed, platen that control unit, upper surface are provided with pressure release mouth, pressure release mouth offers relief hole; Tapping seat is provided be connected with the liquid entering hole of valve body and liquid outlet respectively into and out of fluid apertures; Described disc assembly produce displacement time open/close tapping seat into and out of the runner between fluid apertures; Wherein, described control unit comprises permanent magnet, coil, coil rack, U-shaped support, dynamic iron core, static iron core; Coil rack inside offers the stroke passage holding dynamic and static iron core, and biside plate and the coil rack of U-shaped support connect and fix, and the top of U-shaped support is positioned at the top of coil rack; One end of static iron core and the top of U-shaped support are adjustable fixing, and the other end stretches in stroke passage; One end of dynamic iron core is connected with rubber cap; Dynamic iron core under magnetic field and permanent magnet effect mobile make rubber cap open/close relief hole thus driver plate assembly generation displacement.

Adopt said structure to pass through to regulate the position of static iron core thus the distance controlling dynamic and static iron core, the required precision that can reduce dynamic and static iron core of break-in, thus improve manufacturing efficiency; The solenoid valve of prior art needs first first first to be installed with valve interior wall by the elastomer diaphragm of valve head to install travel(l)ing rest, stuffing box gland, coil etc. successively again in installation process, therefore very high to the required precision of elastomer diaphragm, travel(l)ing rest, stuffing box gland etc., because the precision of elastomer diaphragm, travel(l)ing rest, rubber cap directly can have influence on the distance between dynamic and static iron core.And adopt this structure that the installation of solenoid valve is bothered very much, shell disc assembly, control unit, platen, tapping seat are made an entirety, install very convenient with valve body, only need tapping seat and valve body to work good, it is very convenient to assemble up.

Wherein, described static iron core is provided with outside thread, described U-shaped frame upper is provided with internal thread, fixes between described static iron core and U-shaped support in screw thread.

The mode adopting bolt to regulate regulates the position of static iron core thus can control the distance between static iron core and dynamic iron core very easily, and makes the control of distance more accurate.

Wherein, described tapping seat comprises ring support, fluid portion, and ring support outer surface and shell are in connecting and fixing; The sectional shape in described fluid portion is annulus, and the center hole of described annulus is liquid outlet opening, and fluid portion fixedly makes the space between adjacent two joints form inlet opening by several joints and ring support; The one end in fluid portion to extend in the liquid outlet of the pump housing and with its sealing.

And have in technology adopt the whole bottom surface of elastomer diaphragm and the pump housing to offer liquid outlet plane between carry out face and face seals, can increase the required precision to elastomer diaphragm and valve body undoubtedly, elastomer diaphragm must seal guarantee solenoid valve completely with the plane at liquid outlet place and normally works herein.Especially be that secondary produces the upper valve head usually only buying impulse electromagnetic valve, process valve body miscellaneous voluntarily, and in this case, secondary manufacturer wants the precision trouble very of the plane ensureing liquid outlet place, and extremely many time can be wasted, do like this and can increase a lot of cost undoubtedly and reduce manufacturing efficiency; Adopt this structure, only need to ensure the precision between cylindrical external diameter and the bore of liquid outlet, and adopt sealing means to connect herein, therefore the precision of seal ring is only ensured, compared with prior art, reduce the requirement to machining accuracy, break-in improve manufacturing efficiency, and suitability is stronger.

Wherein, described tapping seat is provided with filter screen, filter screen is positioned at the downside of liquid entering hole.

Filter screen is set at liquid entering hole place and can enters into the normal work of solenoid valve internal influence to solenoid valve by the impurity of larger particles in anti-sealing.

Wherein, the bottom of platen is provided with groove, and inside grooves is provided with micro porous filtration sheet; Platen offers through hole and runner, relief hole and flow passage; The side opening of platen is provided with the opening of runner; When rubber cap and relief hole are opened, the liquid near pressure release mouth flow into the side of platen by relief hole, and the liquid in groove flows to pressure release mouth by through hole after micro porous filtration sheet.

Micro porous filtration sheet is adopted again to filter, can tiny impurity in filtered water, avoid fine impurities and enter relief hole and dynamic and static core interior and the solenoid valve failure that causes.

Wherein, described disc assembly is between tapping seat and platen; Disc assembly comprises disc body and thin-film covering; Thin-film covering comprises outer portion, press part; Outer portion is fixed between tapping seat and platen, and outer portion, platen, forms sealing between tapping seat three; Disc body is positioned at press part central position and fixes with it; Press part and disc body all offer through hole III.

Wherein, be provided with conductive spring between described micro porous filtration sheet and disc assembly, conductive spring has a straight portion, and described straight portion is through through hole III.

Adopt this structure, make disc assembly in upper process of moving, the straight portion of conductive spring can carry out conducting to through hole III, prevents through hole III blocking.

Wherein, described coil rack comprises base plate, middle part, upper plate, and described coil is set in middle part, and coil is connected with external power supply by waterproof plug; The both side surface of base plate offers containing groove, and two block permanent magnets are separately positioned in two containing grooves; The biside plate of U-shaped support and the both side surface of base plate are in connecting and fixing, and the opening of corresponding containing groove closed by the side plate of U-shaped support.

Adopt the setting of two blocks of permanent magnets, substantially increase the utilization ratio in magnetic field.

Wherein, described upper surface of outer cover is provided with opening, and opening is provided with the upper cover be mated, and one end of waterproof plug is stretched into enclosure through upper cover and shell and is connected with coil; Gap encapsulated epoxy resin between described upper cover and shell and between waterproof plug and upper cover.

Adopt epoxy resin encapsulated, the waterproofing effect of whole solenoid valve is strengthened.

Wherein, the static iron core part stretched in stroke passage has upper and lower two seals groove, is provided with seal ring in seal groove; Move and be provided with spring between iron core and static iron core.

The setting of this structure is adopted to add the sealing of static iron core.

Accompanying drawing explanation

Fig. 1 is explosive view of the present utility model.

Fig. 2 is the sectional drawing that the utility model coordinates with valve body.

Fig. 3 is the stereogram of the utility model tapping seat.

Fig. 4 is the stereogram of the utility model platen.

Fig. 5 is the stereogram of the utility model coil rack.

Fig. 6 is the stereogram of the U-shaped support of the utility model.

Embodiment

Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail:

Shown in accompanying drawing 1-Fig. 6, a kind of valve head of impulse electromagnetic valve, comprises shell 1, upper cover 2, label 3, disc assembly, conductive spring 5, filter screen 75, tapping seat 7, platen 8 and control unit.

Shell 1 inside is provided with cavity, and control unit is positioned at cavity inside, and control unit comprises coil rack 11, coil 12, a pair material are the permanent magnet 13 of neodymium iron boron, dynamic iron core 14, static iron core 15, and coil 12 is connected with external power supply by waterproof plug 16; The upper and lower surface of shell 1 is provided with the opening with cavity connects, upper cover 2 is offered pass for waterproof plug electric wire have through hole I; Upper cover 2 is arranged on the aperture position place above shell 1, the gap epoxy resin encapsulated between upper cover 2 and shell 1; Label 3 is positioned at the top of upper cover 2 for closed through hole I, the gap epoxy resin encapsulated between label 3 and upper cover 2; Waterproof plug 16 is connected with coil 12 through upper cover 2, the gap epoxy resin encapsulated of waterproof plug 16 and upper cover 2 jointing place.It is the outside thread of screw-thread fit that shell 1 outer installment has with valve body.

Coil rack 11 comprises base plate 111, middle part 112, upper plate 113, and coil 12 is set in the middle part 112 of coil rack, the both side surface of base plate 111 offers containing groove 114, and two block permanent magnets 13 are separately positioned in two containing grooves 114; The both side surface of base plate 111 is provided with fixture block 115, the biside plate of U-shaped support 116 is provided with the draw-in groove 117 mated with fixture block 115 and makes in connecting and fixing between U-shaped support 116 and coil rack 11, and the closure of openings of containing groove 114 is ensured that permanent magnet 13 can not skid off from opening the stability adding permanent magnet 13 in after connecting and fixing by U-shaped support 116 and coil rack 11.Base plate 111, middle part 112, upper plate 113 inside form the stroke passage holding dynamic and static iron core 14,15; The correspondence course channel position place, top of U-shaped support 116 is provided with internal thread 118, one end of static iron core 15 is outside thread, static iron core 15 the other end is made to stretch into stroke channel interior after static iron core 15 and the top of U-shaped support 116 are threaded connection, so the stroke size of dynamic iron core 14 can change according to regulating the position of static iron core 15.The part that static iron core 15 stretches into stroke passage offers two seal grooves 120, is provided with seal ring in seal groove 120 thus makes to be formed between static iron core 15 and stroke passage to seal.One end of dynamic iron core 14 is spring mountings 141, and one end of spring 142 is connected with spring mountings 141, and the other end and static iron core 14 offset; The other end thus make that rubber cap 143 is coated on dynamic iron core 14 coordinates more stable between rubber cap 143 with dynamic iron core 14.

Tapping seat 7 comprises ring support 71 and fluid portion 72, fluid portion 72 is positioned at the shaft core position place of ring support 71 and being connected by five joints 73 and ring support 71 in cylindricality, form liquid entering hole 74 between adjacent two joints 73, liquid entering hole 74 with the central shaft in fluid portion 72 for axle center circumferentially array; Filter screen 75 is arranged on liquid entering hole 74 in the form of a ring, and liquid enters liquid entering hole 74 through filter screen 75; Fluid portion 72 offers out fluid through-hole 76, one of them joint 73 offers through hole IV 78, liquid can flow into out fluid through-hole 76 from through hole IV 78 and then pass through fluid through-hole 76 and flow out; The one end in fluid portion 72 exceeds ring support 71, and this exceeds in part and has offered seal groove 120, seal groove 120 is provided with seal ring, thus makes to be formed between the inwall of the liquid outlet of fluid portion 72 and the pump housing to seal; This sealing configuration is adopted only to need to ensure that the bore precision of seal ring and pump housing liquid outlet just can realize fluid portion 72 and seal with the liquid outlet 10 of the pump housing.Ring support 71 is provided with four positioning blocks 77, shell 1 is provided with four locating slots 144 being positioned near lower opening, is formed and connect and fix thus ensure that shell 1 forms stable coordinating with ring support 71 between positioning block 77 with locating slot 144.Ring support 71 and shell 1 are sealed by seal ring near lower opening position, and sealing circle is positioned at the below of joint 73.

The upper surface of platen 8 offers cavity I 81, is tightly connected, forms medium receiving cavity between cavity I 81 and base plate 111 between the sidewall of cavity I 81 and base plate 111 by seal ring; The bottom of cavity I is provided with pressure release mouth 82, and the center position of pressure release mouth 82 offers relief hole 83, the flow passage of relief hole 83 and platen 8 inside, is sealed between the sidewall of platen 8 on the upside of flow passage openings 84 and shell 1 by seal ring; When solenoid valve is in non-working state, relief hole 83 to be sealed therefore medium receiving cavity inner overall for sealing for rubber cap 143, when rubber cap 143 separates with relief hole 83 along with dynamic iron core 14 moves, the liquid in medium receiving cavity flows in runner and flows out from flow passage openings 84 from relief hole 83.

The lower surface of platen 8 offers cavity II 85, and platen 8 is offered the through hole II 86 being communicated with cavity II 85 and cavity I 81, when rubber cap 143 is separated with relief hole 83, medium can flow in medium receiving cavity by via through holes II 86; Micro porous filtration sheet 87, conductive spring 5, disc assembly is set gradually in cavity II 85, micro porous filtration sheet 87 adopt filter precision reach five microns PE filter sheet, micro porous filtration sheet 87 is arranged on the diapire of cavity II 85, so liquid can be flow in medium receiving cavity by through hole II 86 after micro porous filtration sheet 87 filters again.Disc assembly comprises disc body 41 and thin-film covering 42; Thin-film covering comprises outer portion 421, press part 422, connects the buffer part 423 of epitaxy part 421 and press part 422; Outer portion 421 is fixed between annular support 71 and between platen 8, and outer portion 421, forms sealing between annular support 71, between platen 8 three; Disc body 41 is positioned at the top of press part, and disc body 41 has the central position of a projection 411 through press part 422; Press part 422 and disc body 41 all offer through hole III; Conductive spring 5 is between micro porous filtration sheet 87 and disc body 41, and conductive spring 5 has a straight portion 51 through through hole III.When disc assembly is not moved, the lower surface of press part 422 and the top going out fluid through-hole 76 are formed and to seal and projection 411 stretches into out in fluid through-hole 76.

The working principle of above-mentioned pulse electromagnetic:

When impulse electromagnetic valve opened by needs, give coil 12 1 direct impulse signals, coil 12 produces pulsed magnet field, the magnetic of this pulsed magnet field is contrary with the magnetic of permanent magnet 13, therefore dynamic iron core 14 can move up and drive rubber cap 143 to be separated with relief hole 83, liquid in medium receiving cavity is flowed out by relief hole 83, finally flow into out in fluid through-hole 76; Pressure in medium receiving cavity reduces, and therefore disc assembly moves up under the effect of hydraulic pressure, thus press part 422 and the sealing gone out between fluid through-hole 76 are broken liquid is fed directly to out in fluid through-hole 76.When needs shut electromagnetic valve, give coil 12 1 negative-going pulse signals, coil 12 produces pulsed magnet field, the magnetic of this pulsed magnet field and the Magnetic Phase of permanent magnet 13 are together, dynamic iron core 14 return under the effect of repulsion and spring force makes rubber cap 143 be closed by relief hole 83 again, along with the pressure in medium receiving cavity increases gradually, disc assembly move down under the effect of hydraulic pressure make press part 422 again with go out fluid through-hole and seal, thus shut electromagnetic valve.

Claims (10)

1. the valve head of an impulse electromagnetic valve, it comprises shell, with shell in detachable fixing tapping seat, be arranged at the disc assembly of the cavity inside that shell and tapping seat are formed, platen that control unit, upper surface are provided with pressure release mouth, pressure release mouth offers relief hole; Tapping seat is provided be connected with the liquid entering hole of valve body and liquid outlet respectively into and out of fluid apertures; Described disc assembly produce displacement time open/close tapping seat into and out of the runner between fluid apertures; It is characterized in that: described control unit comprises permanent magnet, coil, coil rack, U-shaped support, dynamic iron core, static iron core; Coil rack inside offers the stroke passage holding dynamic and static iron core, and biside plate and the coil rack of U-shaped support connect and fix, and the top of U-shaped support is positioned at the top of coil rack; One end of static iron core and the top of U-shaped support are adjustable fixing, and the other end stretches in stroke passage; One end of dynamic iron core is connected with rubber cap; Dynamic iron core under magnetic field and permanent magnet effect mobile make rubber cap open/close relief hole thus driver plate assembly generation displacement.

2. the valve head of impulse electromagnetic valve according to claim 1, is characterized in that: described static iron core is provided with outside thread, and described U-shaped frame upper is provided with internal thread, fixes between described static iron core and U-shaped support in screw thread.

3. the valve head of impulse electromagnetic valve according to claim 1, is characterized in that: described tapping seat comprises ring support, fluid portion, and ring support outer surface and shell are in connecting and fixing; The sectional shape in described fluid portion is annulus, and the center hole of described annulus is liquid outlet opening, and fluid portion fixedly makes the space between adjacent two joints form inlet opening by several joints and ring support; The one end in fluid portion to extend in the liquid outlet of the pump housing and with its sealing.

4. the valve head of the impulse electromagnetic valve according to claim 1 or 2 or 3, it is characterized in that: described tapping seat is provided with filter screen, filter screen is positioned at the downside of liquid entering hole.

5. the valve head of impulse electromagnetic valve according to claim 1, is characterized in that: the bottom of platen is provided with groove, and inside grooves is provided with micro porous filtration sheet; Platen offers through hole and runner, relief hole and flow passage; The side opening of platen is provided with the opening of runner; When rubber cap and relief hole are opened, the liquid near pressure release mouth flow into the side of platen by relief hole, and the liquid in groove flows to pressure release mouth by through hole after micro porous filtration sheet.

6. the valve head of impulse electromagnetic valve according to claim 5, is characterized in that: described disc assembly is between tapping seat and platen; Disc assembly comprises disc body and thin-film covering; Thin-film covering comprises outer portion, press part; Outer portion is fixed between tapping seat and platen, and outer portion, platen, forms sealing between tapping seat three; Disc body is positioned at press part central position and fixes with it; Press part and disc body all offer through hole III.

7. the valve head of impulse electromagnetic valve according to claim 6, is characterized in that: be provided with conductive spring between described micro porous filtration sheet and disc assembly, and conductive spring has a straight portion, and described straight portion is through through hole III.

8. the valve head of impulse electromagnetic valve according to claim 1, is characterized in that: described coil rack comprises base plate, middle part, upper plate, and described coil is set in middle part, and coil is connected with external power supply by waterproof plug; The both side surface of base plate offers containing groove, and two block permanent magnets are separately positioned in two containing grooves; The biside plate of U-shaped support and the both side surface of base plate are in connecting and fixing, and the opening of corresponding containing groove closed by the side plate of U-shaped support.

9. the valve head of impulse electromagnetic valve according to claim 8, is characterized in that: described upper surface of outer cover is provided with opening, and opening is provided with the upper cover be mated, and one end of waterproof plug is stretched into enclosure through upper cover and shell and is connected with coil; Gap encapsulated epoxy resin between described upper cover and shell and between waterproof plug and upper cover.

10. the valve head of impulse electromagnetic valve according to claim 1, is characterized in that: the static iron core part stretched in stroke passage has upper and lower two seals groove, is provided with seal ring in seal groove; Move and be provided with spring between iron core and static iron core.