CN104534142A - Electrically operated valve and stop device thereof - Google Patents
Electrically operated valve and stop device thereof Download PDFInfo
- Publication number
- CN104534142A CN104534142A CN201510014426.7A CN201510014426A CN104534142A CN 104534142 A CN104534142 A CN 104534142A CN 201510014426 A CN201510014426 A CN 201510014426A CN 104534142 A CN104534142 A CN 104534142A
- Authority
- CN
- China
- Prior art keywords
- guide rail
- spring guide
- nut
- operated valve
- stopping device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0686—Braking, pressure equilibration, shock absorbing
- F16K31/0689—Braking of the valve element
Abstract
A stop device of an electrically operated valve comprises a spring guide rail and a slip ring, the spring guide rail and the slip ring are arranged in an embedded mode and matched spirally, an upper stop part is arranged at the top end of the spring guide rail, and the stop device is characterized by further comprising a nut which is provided with a big-diameter section extending in the radial direction. A clamping limiting part is arranged on the big-diameter section, the part, above the big-diameter section, of the nut is sleeved with the spring guide rail, and the tail end of the spring guide rail is matched with the clamping limiting part so that the spring guide rail can be axially and circumferentially limited. Because an axial limiting part and a circumferential limiting part do not need to be arranged on the nut, the assembling uniformity of the relative position of the spring guide rail is easier to guarantee, the assembling precision of the stop device is improved, and the structure is simpler. In the assembling process, the spring guide rail can be conveniently and rapidly fixed, and therefore the number of assembling processes is effectively reduced.
Description
Technical field
The present invention relates to a kind of valve, be specifically related to a kind of mortor operated valve and stopping device thereof.
Background technique
At present, the mortor operated valve being applied to refrigeration system is driven by motor, with the flow of pilot line medium.Existing mortor operated valve comprises shell, be enclosed within the stator coil outside shell and be connected to the valve seat of outer casing underpart, and is positioned at magnet rotor, the needle and valve core case etc. of shell; The motor that stators and rotators is formed is used for valve needle relative to the joint of valve core case or separation.In working procedure, the positive and negative direction controlling rotor rotates, by the transmission of screw mandrel and nut, it is needle straight-line displacement vertically by the convert rotational motion of rotor, thus regulate the flow area of valve port, and then regulate the refrigerant flow flowing into vaporizer, ensure the Effec-tive Function of refrigeration system.Obviously, for guaranteeing that the upper and lower displacement of needle is carried out in prespecified range, the stopping device of Upper-lower Limit position should be set.
Japanese documentation JP2009-162366A discloses a kind of mortor operated valve adopting above-mentioned working principle, and controls needle axial displacement in prespecified range by the slip ring that matches and spring guide rail.Wherein, the nut coordinated with needle is assemblied in the endoporus of pilot sleeve top, pilot sleeve and valve seat is supporting is welded and fixed; Stopper spring guide rail sleeve is contained in the outside of pilot sleeve, and its afterbody inserts in the positioning hole of pilot sleeve, and needs to be fixed the afterbody of spring guide rail, so that location fixing spring guide rail; Spring guide rail and both threaded engagement nested with inside and outside slip ring, this slip ring can rotate and axial displacement along spring guide rail under the effect of rotor retainer, until the upper retainer of slip ring and spring guide rail or lower retainer offset, be in maximal work position.
In the spring guide rail assembly process of such scheme, first, after spring guide rail being inserted the positioning hole of pilot sleeve, and its afterbody is fixed to obtain location completely reliably; Secondly, before spring guide rail afterbody is fixed, the relative position of control spring guide rail is needed, to guarantee its assembly precision.Obviously, the program must cause the increase of process cost, and then increases the manufacture cost of mortor operated valve.
In view of this, the stopping device urgently for existing mortor operated valve is optimized design, effectively to solve the more defect of assembly process existing for existing structure.
Summary of the invention
For above-mentioned defect, the technical problem that the present invention solves is, provides a kind of assembly technology simple mortor operated valve stopping device, effectively to control the process cost of mortor operated valve.On this basis, the present invention also provides a kind of mortor operated valve with above-mentioned stopping device.
Mortor operated valve stopping device, comprise inside and outside nested and the spring guide rail of threaded engagement and slip ring, the top of described spring guide rail is provided with retainer, it is characterized in that, also comprises nut, and described nut has radially-protruding large footpath section; Described large footpath section is provided with engaging limited part;
Described spring guide rail is sleeved on the nut of more than described large footpath section, and the tail end of described spring guide rail engages limited part coordinate with described, thus realizes axial limiting to described spring guide rail and circumference is spacing.
As the preferred scheme of one, described nut is made up of plastic material, and the nut outer surface setting-in below the section of described large footpath is fixed with the endless metal connecting sheet for being fixedly connected with mortor operated valve valve seat.
The tail end of described spring guide rail is provided with first time retainer, and when described slip ring moves to lower dead center, described first time retainer is used for carrying out spacing to described slip ring.
Or be provided with second time retainer in the large footpath section of described nut, when described slip ring moves to lower dead center, described first time retainer is used for carrying out spacing to described slip ring.
Described engaging limited part is be arranged on the spacing hole in the section of described large footpath, described spring guide rail has the transition part that the surface along described large footpath section extends and the first hooking part extended towards the axisymmetric center of described spring guide rail, described hooking part insert in described spacing hole with realize to the axial limiting of described spring guide rail and circumference spacing.
Or, the outer of described endless metal connecting sheet is provided with opening, described engaging limited part is formed at the lower surface of described opening, and described spring guide rail has transition part that the surface along described large footpath section extends and the second hooking part for coordinating with described opening.
Described nut and described endless metal connecting sheet integrated injection molding.
On this basis, the present invention also provides a kind of mortor operated valve, and its valve seat and shell form inner volume, and be provided with the stopping device with needle screw component and rotor engagement in described inner volume, it is characterized in that, described stopping device adopts above-mentioned stopping device.
The spring guide rail of mortor operated valve stopping device provided by the invention is sleeved on nut top, top is provided with retainer, spring guide rail is sleeved on the nut of more than large footpath section, the tail end of spring guide rail engages limited part coordinate with described, thus realizes axial limiting to described spring guide rail and circumference is spacing.Do not need on nut, arrange axial limiting portion and circumferential limited part respectively, the assembling conformity of spring guide rail relative position is more easily ensured, improve the assembly precision of stopping device, structure is more simple.Can fixing spring guide rail easily and quickly in assembly process, effectively reduce assembly process.
Nut in preferred version of the present invention is made up of plastic material, and like this, when slip ring is along spring guide rail threaded engagement, between itself and plastic nut outer surface, the surface friction drag of relative sliding is less, effectively can reduce the resistance of mortor operated valve rotor turns.
Accompanying drawing explanation
The overall structure schematic diagram of Fig. 1: the first embodiment's mortor operated valve;
The overall structure schematic diagram of Fig. 2: the second embodiment's mortor operated valve;
The overall structure schematic diagram of Fig. 3: the three embodiment's mortor operated valve.
Embodiment
Present embodiment is illustrated below in conjunction with Figure of description.
First mode of execution:
Please refer to Fig. 1, Fig. 1 is the mortor operated valve overall structure schematic diagram of the first embodiment that the present invention provides.As shown in Figure 1, valve component comprises valve core case 11 and is welded with valve seat 12 and connecting tube 13,14, and shell 5 is set with and is welded on valve seat 12, thus forms airtight valve pocket.The inside of valve pocket is provided with needle screw component, nut assembly, rotor assembly and stopping device.
Valve seat 12 is the metal partss substantially in drum-shaped, stretching can be adopted to make, at the bottom opening of this cylinder, and valve core case 11 and vertical joint pipe 13 are welded thereon, welding between three can be combined according to different situations, structure is as shown in Figure 1 welded on valve seat 12 by valve core case 11, and then be connected on valve core case 11 by vertical joint pipe 13; Can certainly arrange turnup structure at the bottom opening place of valve seat 12, thus valve core case 11 and vertical joint pipe 13 are all welded and fixed with valve seat 12, those skilled in the art can also make various equivalent replacement means based on above-mentioned design.
Valve core case 11 is a cylindrical circular metal parts of cardinal principle, and itself and valve seat 12 are coaxially fixed, and its circumference is provided with fluid passing hole, for the circulation of refrigerant.The bottom of valve core case 11 is provided with valve port, and regulates the aperture of valve port by needle 21.The upper end of valve core case 11 arranges and coordinates fixing guide section with nut part 32, to ensure the requirement of coaxality.Certain valve core case 11 also can be set to Split type structure, and these are equivalent technological means and replace.
The lower end of needle 21 coordinates the unlatching or closedown that realize mortor operated valve with valve opening, its upper end has the indent cavity volume axially arranged, and its upper end portion and valve needle cover 22 integrally welded, namely form the needle limited part having from the outer of indent cavity volume and inwardly stretch in footpath; The lower end of screw mandrel 23 is plugged in this valve needle cover 22, and its head is welded with the back-up ring 24 be installed among indent cavity volume, and namely form radial overhanging screw mandrel limited part, this back-up ring 24 and valve needle cover 22 offset to coordinate and realize screw mandrel 23 axial limiting.Spring 25 is provided with, so that the reset of screw mandrel 23 in indent cavity volume.Certainly, spring 25 is not limited to the precompression shown in figure and is placed on spiral compression spring between indent cavity volume, as long as in fact precompression is placed in the Flexible Reset parts of the indent cavity volume inside described screw mandrel.In like manner, the relation that is fixedly connected with between needle 21 with valve needle cover 22 and between screw mandrel 23 with back-up ring 24 is not limited to welds, and also can adopt other Placements, and such as, interference such as to be press-fitted at the mode.
Nut assembly comprises plastic nut 32 and endless metal connecting sheet 31, and this metal connecting sheet 31 is flush-mounted in plastic nut, and fixes with valve seat 12.Plastic nut 32 preferably adopts engineering resin, is shaped with endless metal connecting sheet 31 integrated injection molding.Some opening 31a are provided with on nut 32 injection moulding all-in-one-piece metal connecting sheet 31 excircle.
Stopping device comprises inside and outside nested and the spring guide rail 33 of threaded engagement and slip ring 34, and spring guide rail 33 is formed by steel wire wound, and its main body is sleeved on the outer surface on nut 32 top.Like this, slip ring 34 can be for the helical movement along spring guide rail 33, rotor assembly is made up of with the connecting body both being connected magnet rotor 41, rotor retainer 42, and magnet rotor 41 is set in the outside of spring guide rail 33, and rotor retainer 42 axially stretches out and coordinates with slip ring 34; Namely above-mentioned spring guide rail 33, slip ring 34 form the stop mechanism of this mortor operated valve.
In order to control the stop up and down of the spiral motion of slip ring 34, need to arrange chocking construction and lower chocking construction accordingly on mortor operated valve, namely when link motion is to top dead center, upper chocking construction can stop slip ring to move further, and when link motion is to lower dead center, lower chocking construction can stop slip ring to move further.
In the first embodiment, the top of spring guide rail 33 is provided with retainer 33a, like this, when slip ring 33 spiral is to limit position, can touch retainer 33a, thus stops further motion.
Nut 32 usually can be injection molded with engineering plastics, and be provided with radially-protruding large footpath section 32a in the middle part of it, spring guide rail 33 mentioned above is exactly be set on the nut periphery of large footpath more than section 32a.The periphery wall of large footpath section 32a is provided with engaging limited part, in the first embodiment, this engaging limited part is be arranged on the spacing hole 32c on large footpath section 32g, spacing hole 32c is by through inside and outside nut, the benefit of this set is, spacing hole 32c not only can carry out spacing to spring guide rail, can also play and make pressure balanced effect between exocoel in nut.An equalizing orifice can certainly be set separately more in addition, also can realize object of the present invention.
Because the external diameter of large footpath section 32a is larger than the external diameter on nut top, like this, spring guide rail 33 just has the axially extended transition part 33d in surface along large footpath section, in present embodiment, large footpath section 32a forms the step at right angle, corresponding transition part 33d is rectangular shape just, it will be appreciated by those skilled in the art that, because nut 32 adopts engineering plastics injection molded, therefore various shape can be designed to, except right angle transition, can also be set as frustum transition etc., so, corresponding spring guide rail 33 is just made according to the shape of large footpath section 32a and being changed accordingly.
At the tail end of spring guide rail 33, namely the part connected with transition part 33d is set to the first hooking part 33c, the bearing of trend of the first hooking part 33c is towards the axisymmetric center of spring guide rail 33, as shown in Figure 1, first hooking part 33c inserts in spacing hole 32c, like this, the axis of spring guide rail and Zhou Weijun is just made to achieve spacing, without the need to arranging complicated axial limiting mechanism and circumferential position-limit mechanism respectively again.
In order to realize the lower stop to slip ring 34, the tail end of spring guide rail 33 is also provided with first time retainer 33b, first time retainer 33b extends along the axis of nut 32, be similar to the setting of retainer 33a, like this, when slip ring 34 spiral motion is to lower limit position, first time retainer 33b will be touched, thus stop further motion, thus it is spacing to realize slip ring.
The assembling mode of the stopping device of present embodiment is: first, along the Hand of spiral of spring guide rail 33, make the axis of slip ring 34 and the dead in line of spring guide rail 33, and slip ring 34 is placed on the first lap heliconid of spring guide rail 33, then both are sleeved on together on the top excircle of nut 32, first of the afterbody of spring guide rail 33 time retainer 33b is pulled open to the direction away from axis, and spring guide rail 33 is moved down, first time retainer 33b is made to insert in the spacing hole 32c on the large footpath section 32a of nut, after completing aforesaid operations, spring guide rail 33 has just been fixed on nut 32, and achieve the spacing and axial limiting of circumference simultaneously.
After completing the assembling of stopping device according to above-mentioned assembling mode and order, screw mandrel 23, slip ring 34 are adjusted to the position of regulation, again the rotor 41 with rotor retainer 42 is assembled to the top of screw mandrel 23 by the position of regulation, and welding is implemented to rotor connecting body and screw mandrel 23 top, rotor 41 and screw mandrel 23 are linked into an integrated entity, is welded and fixed after finally shell 5 and valve seat 12 being assembled.
Like this, when mortor operated valve works, the rotor 41 of coil drive mortor operated valve rotates, and the retainer of rotor 41 can drive slip ring 34 to rotate in spring guide rail 33.When slip ring 34 upwards turns to limit position, the upper retainer 33a of spring guide rail 33 can limit slip ring 34 to be continued upwards to rotate, thus plays the effect of stop; When slip ring 34 is pivotally lowered into summit, first time retainer 33b of spring guide rail 33 can limit slip ring 34 to be continued to rotate, thus plays the effect of lower stop.
Present embodiment structure is simple, and assembly process is convenient and swift, decreases assembly process, reduces cost.
Second mode of execution:
Please refer to Fig. 2, Fig. 2 is the overall structure schematic diagram of second embodiment of the invention mortor operated valve.
In order to more clearly describe the technological scheme of the second mode of execution, and contrasting with the first mode of execution, when relating to identical modular construction, all adopting same reference character to represent.And for identical position annexation, no longer carry out repeat specification.
As shown in Figure 2, the difference of present embodiment and the first mode of execution is device slip ring 34 being carried out to lower stop, in the first embodiment, adopt in spring guide rail 33, to arrange first time retainer 33b realize, and in the present embodiment, then by arranging protruding second time retainer 32b on the large footpath section 32a of nut 32, particularly, shaping second time retainer 32b while that nut 32 being when molding and forming, do not need to go extraly to increase modular construction, when slip ring 34 moves to lower dead center, will be inconsistent with second time retainer 32b, thus realize spacing.
The structure that the miscellaneous part structure of present embodiment can directly adopt the first mode of execution to provide, this is no longer going to repeat them.
3rd mode of execution:
Please refer to Fig. 3, Fig. 3 is the overall structure schematic diagram of second embodiment of the invention mortor operated valve.
3rd mode of execution, compared with the second mode of execution, has done change for the engaging limited part set-up mode on nut, thus changes the circumference location of spring guide rail 33 and the mode of axially locating.Particularly, on the large footpath section 32a of nut, do not arrange spacing hole 32c in present embodiment, but the outer of endless metal connecting sheet 31 is provided with opening 31a, namely the engaging limited part of nut is formed in the lower surface of opening 31a; And spring guide rail 33 has the transition part 33d that the surface along large footpath section 32a extends equally, and its tail end, namely the part be connected with transition part 33d is then set to the second hooking part 33e, second hooking part 33e through bending after opening 31a, thus realizes axial limiting to spring guide rail 33 and circumference is spacing.
The present invention also provides a kind of mortor operated valve simultaneously, its valve seat and shell form inner volume, the stopping device with needle screw component and rotor engagement is provided with in described inner volume, above structure has been described in detail all in the first embodiment, the second mode of execution or the 3rd mode of execution then can be selected to realize about stopping device.
Those skilled in the art should understand; under enlightening based on technology of the present invention; permutation and combination can be carried out for the different structure described by above-mentioned three kinds of mode of executions; thus draw more mode of execution; or under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. mortor operated valve stopping device, comprise inside and outside nested and the spring guide rail of threaded engagement (33) and slip ring (34), the top of described spring guide rail (33) is provided with retainer (33a), it is characterized in that, also comprise nut (32), described nut (32) has radially-protruding large footpath section (32a); Described large footpath section (32a) is provided with engaging limited part;
Described spring guide rail (33) is sleeved on the nut of more than described large footpath section (32a), the tail end of described spring guide rail (33) engages limited part coordinate with described, thus realizes axial limiting to described spring guide rail (33) and circumference is spacing.
2. mortor operated valve stopping device as claimed in claim 1, it is characterized in that, described nut (32) is made up of plastic material, and described large footpath section (32a) nut outer surface setting-in is below fixed with the endless metal connecting sheet (31) for being fixedly connected with mortor operated valve valve seat.
3. mortor operated valve stopping device as claimed in claim 2, it is characterized in that, the tail end of described spring guide rail (33) is provided with first time retainer (33b), when described slip ring (34) moves to lower dead center, described first time retainer (33b) is for carrying out spacing to described slip ring (34).
4. mortor operated valve stopping device as claimed in claim 2, it is characterized in that, large footpath section (32a) of described nut (32) is provided with second time retainer (32b), when described slip ring (34) moves to lower dead center, described first time retainer (33b) is for carrying out spacing to described slip ring (34).
5. the mortor operated valve stopping device as described in claim 3 or 4, it is characterized in that, described engaging limited part is for being arranged on the spacing hole (32c) on described large footpath section (32a), described spring guide rail (33) has the transition part (33d) that the surface along described large footpath section (32a) extends and the first hooking part (33c) extended towards the axisymmetric center of described spring guide rail (33), described first hooking part (33c) insert in described spacing hole (32c) with realize to the axial limiting of described spring guide rail (33) and circumference spacing.
6. the mortor operated valve stopping device as described in claim 3 or 4, it is characterized in that, the outer of described endless metal connecting sheet (31) is provided with opening (31a), described engaging limited part is formed at the lower surface of described opening (31a), and described spring guide rail (33) has transition part (33d) that the surface along described large footpath section extends and the second hooking part (33e) for coordinating with described opening (31a).
7. arbitrary mortor operated valve stopping device according to claim 2, is characterized in that, described nut (32) and described endless metal connecting sheet (31) integrated injection molding.
8. mortor operated valve, its valve seat and shell form inner volume, be provided with the stopping device with needle screw component and rotor engagement in described inner volume, it is characterized in that, described stopping device adopts the mortor operated valve stopping device as described in any one as described in claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510014426.7A CN104534142A (en) | 2015-01-12 | 2015-01-12 | Electrically operated valve and stop device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510014426.7A CN104534142A (en) | 2015-01-12 | 2015-01-12 | Electrically operated valve and stop device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104534142A true CN104534142A (en) | 2015-04-22 |
Family
ID=52849727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510014426.7A Pending CN104534142A (en) | 2015-01-12 | 2015-01-12 | Electrically operated valve and stop device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104534142A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424750A (en) * | 2017-08-28 | 2019-03-05 | 浙江盾安机械有限公司 | A kind of electric expansion valve and its assembling scheme |
| CN110107695A (en) * | 2018-02-01 | 2019-08-09 | 株式会社鹭宫制作所 | Motor-driven valve and refrigerating circulation system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454818A (en) * | 2010-10-15 | 2012-05-16 | 浙江三花股份有限公司 | Electric valve |
-
2015
- 2015-01-12 CN CN201510014426.7A patent/CN104534142A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454818A (en) * | 2010-10-15 | 2012-05-16 | 浙江三花股份有限公司 | Electric valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109424750A (en) * | 2017-08-28 | 2019-03-05 | 浙江盾安机械有限公司 | A kind of electric expansion valve and its assembling scheme |
| CN109424750B (en) * | 2017-08-28 | 2022-06-17 | 浙江盾安机械有限公司 | Electronic expansion valve and assembling method thereof |
| CN110107695A (en) * | 2018-02-01 | 2019-08-09 | 株式会社鹭宫制作所 | Motor-driven valve and refrigerating circulation system |
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| C06 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 312500 Xinchang, Zhejiang province Qixing street under the village of Liquan Applicant after: ZHEJIANG SANHUA INTELLIGENT CONTROLS Co.,Ltd. Address before: 312500 Xinchang, Zhejiang province Qixing street under the village of Liquan Applicant before: ZHEJIANG SANHUA Co.,Ltd. |
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| COR | Change of bibliographic data | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |