CN201100423Y

CN201100423Y - Piston electromagnetic valve

Info

Publication number: CN201100423Y
Application number: CNU2007201822719U
Authority: CN
Inventors: 王浩
Original assignee: Zhejiang Dunan Artificial Environmental Equipment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environmental Equipment Co Ltd; Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2007-11-16
Filing date: 2007-11-16
Publication date: 2008-08-13
Anticipated expiration: 2017-11-16

Abstract

The utility model discloses a piston magnetic valve, comprising a valve body and a valve cover which is cooperated with the valve body, wherein a piston component is arranged inside a valve cavity which is formed of the valve body and the valve cover; a spring pedestal is disposed inside an inner cavity of the piston component; the inner cavity of the piston component blocks a valve mouth of the magnetic valve under the function of a restoring spring between the valve cover and the spring pedestal; and the spring pedestal and the piston component are fixedly connected. The piston magnetic valve provided by the utility model fixedly connects the spring pedestal and the piston component; the spring pedestal doesn't need to have the outer diameter that is equal to the inner diameter of the piston component, and the radial and the axial sizes can be notably decreased, thereby simplifying the structure and reducing the manufacturing cost.

Description

The piston type electromagnetic valve

Technical field

The utility model relates to the control valve field, particularly the piston type electromagnetic valve in field such as a kind of Heating,Ventilating and Air Conditioning (HVAC).

Background technique

Heating,Ventilating and Air Conditioning (HVAC) and other association areas are used the piston type electromagnetic valve through regular meeting.

Please refer to Fig. 1 to Fig. 5, Fig. 1 is the structural representation of a kind of typical piston type electromagnetic valve in the prior art; Fig. 2 surveys schematic representation for the be hit by a bullet axle of spring abutment of piston type electromagnetic valve shown in Figure 1; Fig. 3 is the sectional view of spring seat shown in Figure 2; Fig. 4 is that the axle of valve port seat is surveyed schematic representation in the piston type electromagnetic valve shown in Figure 1; Fig. 5 is the sectional view of valve port seat shown in Figure 4.

A kind of typical piston type electromagnetic valve comprises valve body 11 in the prior art, and valve body 11 comprises that a fluid inlet side 111 and a fluid go out end 112.Described piston type electromagnetic valve also comprises valve gap 12, and valve gap 12 is fastened on one with valve body 11, thereby forms the valve pocket of described piston type electromagnetic valve.

Piston element 13 is set in the described valve pocket, and piston element 13 is divided into uuper valve chamber 17 between valve gap 12 and piston element 13 and the lower valve chamber 18 between valve body 11 and piston element 13 with described valve pocket.

Piston element 13 is roughly tubular, and spring seat 15 is set in its inner chamber.Spring seat 15 is made by ABS plastic usually, and its shape is roughly the tubular that two ends all have opening.The external diameter of the circular side wall 152 of spring seat 15 and the internal diameter of piston element 13 adapt, and both common little Spielpassung move in the inner chamber of piston element 13 to avoid spring seat 15.

Have the spring supporting surface 151 that radially is provided with along it in the cylindrical cavity of spring seat 15, the middle part that spring supporting surface 151 is arranged at spring seat 15 usually by under the position so that hold the die of rivet in the piston element 13 in the space thereunder.The top of Returnning spring 14 and bottom be support valve closure 12 and spring supporting surface 151 respectively.

Described piston type electromagnetic valve also comprises valve port seat 16, and valve port seat 16 is installed on the end of the unloading channel of described piston type electromagnetic valve near uuper valve chamber 17, and in the attachment hole that is threadedly connected to valve gap 12 by its main seat 161 outsides.Valve port seat 16 has can be by the central through bore 162 of core iron parts sealings, and the two ends of central through bore 162 are communicated with uuper valve chamber 17 and discharge channel 113 respectively, so that high-pressure liquid therefrom discharges, and then realizes release.

In order to realize the location of valve gap 12 and valve body 11, connecting pin 19 can be set in both corresponding positioning hole.The central position of connecting pin 19 is provided with should be provided with axial central through bore.

In the above-mentioned prior art, can not produce mobilely at the inner chamber of piston element 13 in order to ensure spring seat 15, the external diameter of spring seat 15 must match with the internal diameter of piston element 13, and the size of spring seat 15 is inevitable bigger like this, increase raw-material consumption, improved the cost of product again.

Suitable space must be left in the bottom of spring supporting surface 151, so that hold the die of rivet in the piston element 13, has therefore increased the height of spring seat 15, and therefore the height of whole valve gap 12 also increases, and is unfavorable for the miniaturization of described piston type electromagnetic valve.

In addition, because the height of spring seat 15 and valve gap 12 is higher, must establish locating stud 19 among the positioning hole of valve gap 12 and valve body 11 in addition with both location, therefore the component of electromagnetic type pilot valve of the prior art are more, this not only makes structure comparatively complicated, and be not easy to assembling, increased cost again.

Therefore, how simplifying the structure of piston type electromagnetic valve in the prior art, and reduce its cost of production simultaneously, is the present technical issues that need to address of those skilled in the art.

The model utility content

The purpose of this utility model provides a kind of piston type electromagnetic valve relatively simple for structure and lower-cost.

For solving the problems of the technologies described above, the utility model provides a kind of piston type electromagnetic valve, comprises valve body and the valve gap that matches with it, in the valve pocket that both form piston element is set; In the inner chamber of described piston element spring seat is set, and its under the effect that is arranged at the Returnning spring between described valve gap and the described spring seat with the valve port shutoff of described solenoid valve, described spring seat is fixedlyed connected with described piston element.

Preferably, described spring seat is by its spring supporting surface and the riveted joint of described piston element.

Preferably, described spring supporting surface is arranged at the bottom of described spring seat.

Preferably, the material of described spring seat is metal or metal alloy.

Preferably, described spring seat is by the formed spring seat of plate stamping.

Preferably, the bottom of valve port seat has the positioning part in the described valve gap, and described positioning part extends in the positioning hole of described valve body, and both closely cooperate.

Preferably, the seal ring that centers on described valve port seat is set between described valve gap and the described valve body.

Relative above-mentioned background technology, piston type electromagnetic valve provided by the utility model, its spring seat is fixedlyed connected with its piston element, can avoid described spring seat to produce in the inner chamber of described piston element like this moves, therefore, described spring seat no longer needs to have and described piston element internal diameter equal outer diameters, and its radial dimension can significantly reduce, simplify the structure, reduced manufacturing cost again.The spring supporting surface of described spring seat can be arranged at the bottom, this moment, the die of described piston element rivet can be riveted on one with itself and described piston element in the center hole of described spring supporting surface, therefore the height of described spring seat can significantly reduce, and then reduced the height of described valve gap and whole piston type electromagnetic valve, reduced manufacturing cost simultaneously.In addition, the bottom of described valve port seat is fixedly connected with the positioning part, and described positioning part extends in the positioning hole of described valve body, can realize the location of described valve body and described valve gap like this, therefore the locating stud of the electromagnetic type pilot valve of prior art can be omitted, this further simplified equipment structure, reduced cost, and made things convenient for assembly manipulation.

Description of drawings

Fig. 1 is the structural representation of a kind of typical piston type electromagnetic valve in the prior art;

Fig. 2 surveys schematic representation for the be hit by a bullet axle of spring abutment of piston type electromagnetic valve shown in Figure 1;

Fig. 3 is the sectional view of spring seat shown in Figure 2;

Fig. 4 is that the axle of valve port seat is surveyed schematic representation in the piston type electromagnetic valve shown in Figure 1;

Fig. 5 is the sectional view of valve port seat shown in Figure 4;

Fig. 6 is the structural representation of a kind of embodiment of piston type electromagnetic valve provided by the utility model;

Fig. 7 is the partial enlarged drawing at A position among Fig. 6;

Fig. 8 surveys schematic representation for the be hit by a bullet axle of spring abutment of piston type electromagnetic valve shown in Figure 6;

Fig. 9 is the sectional view of spring seat shown in Figure 8;

Figure 10 is the partial enlarged drawing at B position among Fig. 6;

Figure 11 is that the axle of valve port seat is surveyed schematic representation in the piston type electromagnetic valve shown in Figure 6;

Figure 12 is the sectional view of valve port seat shown in Figure 11.

Embodiment

The utility model core provides a kind of piston type electromagnetic valve relatively simple for structure and lower-cost.

In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with drawings and embodiments.

Please refer to Fig. 6, this figure is the structural representation of a kind of embodiment of piston type electromagnetic valve provided by the utility model.

In a kind of embodiment, piston type electromagnetic valve provided by the utility model comprises valve body 21, and valve body 21 comprises that a fluid inlet side 211 and a fluid go out end 212.Described piston type electromagnetic valve also comprises valve gap 22, and valve gap 22 is interlocked with valve body 21, thereby between forms the valve pocket of described piston type electromagnetic valve.

Piston element 23 is set in the valve pocket of described piston type electromagnetic valve, and described valve pocket is divided into uuper valve chamber 27 between valve gap 22 and piston element 23 and the lower valve chamber 28 between valve body 21 and piston element 23 by piston element 13.Certainly, be communicated with by damping hole between uuper valve chamber 27 and the lower valve chamber 28.

Piston element 23 is roughly tubular, and spring seat 25 is set in its inner chamber.

Please refer to Fig. 8 and Fig. 9, Fig. 8 surveys schematic representation for the be hit by a bullet axle of spring abutment of piston type electromagnetic valve shown in Figure 6; Fig. 9 is the sectional view of spring seat shown in Figure 8.

The shape of set spring seat 25 is roughly tubular in the piston element 23.Different with the spring seat of available technology adopting ABS plastic, the material of spring seat 25 provided by the utility model specifically can adopt metal or metal alloys such as steel, iron.

Spring seat 25 comprises spring supporting surface 251 and circumferential side wall 252.Different with the spring seat 15 of prior art, in the spring seat 25 provided by the utility model, spring supporting surface 251 is positioned at the bottom of spring seat 25, is used to support the bottom of Returnning spring 24.The apical support of Returnning spring 24 is in valve gap 22 top inner wall.Spring supporting surface 251 also has a center hole 2511.

As shown in Figure 9, spring seat 25 medi-spring supporting surfaces 251 and circumferential side wall 252 have equal thickness, and therefore, spring seat 25 can be formed by plate stamping.Certainly, the thickness of spring seat 25 medi-spring supporting surfaces 251 and circumferential side wall 252 also can be unequal.

Please also refer to Fig. 7, Fig. 7 is the partial enlarged drawing at A position among Fig. 6.

Spring seat 25 is fixedly connected on one with piston element 23.Particularly, both can be by rivet.The aperture of the center hole 2511 of spring supporting surface 251 should suitably be chosen, so that described rivet matches just.Simultaneously, the diameter of described rivet also should adapt with the internal diameter of Returnning spring 24, with convenient spring seat 25 and piston element 23 by described closing-up after, the die of described rivet is positioned among Returnning spring 24 inner chambers.

Because spring seat 25 is fixedlyed connected with piston element 23, therefore avoided spring seat 25 moving in piston element 23 inner chambers, therefore, the radial dimension of spring seat 25 can significantly reduce, thereby simplifies the structure, and has reduced manufacturing cost again.

Because the spring supporting surface 251 of spring seat 25 is arranged at its bottom, and described rivet can pass in the center hole 2511 of spring supporting surface 251, and its die can be positioned at the top of spring supporting surface 251, and inserts among Returnning spring 24 inner chambers.Therefore the height of spring seat 25 can significantly reduce, and then has reduced the height of valve gap 22 and whole piston type electromagnetic valve, has reduced manufacturing cost simultaneously.

Please refer to Figure 11 and Figure 12, Figure 11 is that the axle of valve port seat is surveyed schematic representation in the piston type electromagnetic valve shown in Figure 6; Figure 12 is the sectional view of valve port seat shown in Figure 11.

The piston type electromagnetic valve that the utility model provides also comprises valve port seat 26, valve port seat 26 is installed on the end of unloading channel near uuper valve chamber 27, and it has can be by the central through bore of core iron parts shutoff, the two ends of described central through bore are communicated with uuper valve chamber 27 and discharge channel 213 respectively, so that release is therefrom discharged and then realized to high-pressure liquid.

Valve port seat 26 comprises main seat 261, and the bottom of main seat 261 is cylindrical body, and has outside thread, so as with the positioning hole of valve gap 22 by being threaded.

Fixedly connected positioning part 262, the bottom of main seat 261, positioning part 262 is cylindrical body equally substantially, and when being assemblied in described piston type electromagnetic valve, the bottom of positioning part 262 extends in the positioning hole of valve body 11.

Valve gap 22 equates usually that with the aperture of the positioning hole of valve body 21 obviously, the external diameter of positioning part 262 should be matched with the aperture of above-mentioned positioning hole, to reach fixed effect preferably.Reveal in order further to avoid valve gap 22 and valve body 21 contact position to produce fluid, between valve gap 22 and valve body 21 seal ring is set, described seal ring is around the positioning part 262 of main seat 261.

Valve port seat 26 further has central through bore 263, and obviously, central through bore 263 should connect main seat 261 and positioning part 262, unimpeded with the discharge channel that keeps described piston type electromagnetic valve.

Because the bottom of valve port seat 26 is fixedly connected with positioning part 262, positioning part 262 extends in the positioning hole of valve body 21, can realize the location of valve body 21 and valve gap 22 like this, therefore, the locating stud of the electromagnetic type pilot valve of prior art can be omitted, this further simplified apparatus structure, reduce cost and operation convenient for assembly.

It is to be noted, piston type electromagnetic valve provided by the utility model, can only carry out aforementioned improved to spring seat 25, also can carry out relevant improvement to spring seat 25 with valve port seat 26 simultaneously, promptly, improvement for valve port seat 26 is selectable, is not that technological scheme provided by the utility model is necessary.

More than a kind of piston type electromagnetic valve provided by the utility model is described in detail.Used concrete each example herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.

Claims

1, a kind of piston type electromagnetic valve comprises valve body and the valve gap that matches with it, in the valve pocket that both form piston element is set; In the inner chamber of described piston element spring seat is set, and its under the effect that is arranged at the Returnning spring between described valve gap and the described spring seat with the valve port shutoff of described solenoid valve, it is characterized in that described spring seat is fixedlyed connected with described piston element.

2, piston type electromagnetic valve as claimed in claim 1 is characterized in that, described spring seat is by its spring supporting surface and the riveted joint of described piston element.

3, piston type electromagnetic valve as claimed in claim 2 is characterized in that, described spring supporting surface is arranged at the bottom of described spring seat.

4, piston type electromagnetic valve as claimed in claim 3 is characterized in that, the material of described spring seat is metal or metal alloy.

5, piston type electromagnetic valve as claimed in claim 4 is characterized in that, described spring seat is by the formed spring seat of plate stamping.

6, as each described piston type electromagnetic valve of claim 1 to 5, it is characterized in that the bottom of valve port seat has the positioning part in the described valve gap, described positioning part extends in the positioning hole of described valve body, and both closely cooperate.

7, piston type electromagnetic valve as claimed in claim 6 is characterized in that, the seal ring around described valve port seat is set between described valve gap and the described valve body.