CN102454818A - Electric valve - Google Patents
Electric valve Download PDFInfo
- Publication number
- CN102454818A CN102454818A CN2010105152341A CN201010515234A CN102454818A CN 102454818 A CN102454818 A CN 102454818A CN 2010105152341 A CN2010105152341 A CN 2010105152341A CN 201010515234 A CN201010515234 A CN 201010515234A CN 102454818 A CN102454818 A CN 102454818A
- Authority
- CN
- China
- Prior art keywords
- nut
- valve
- needle
- mortor operated
- core case
- 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
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Classifications
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- 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
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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- 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
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
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- 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
- F16K25/00—Details relating to contact between valve members and seat
- F16K25/02—Arrangements using fluid issuing from valve members or seats
Abstract
The invention relates to the technical field of control valves, in particular to an electric valve for regulating fluid flow. The electric valve comprises a valve seat component, a nut component and a valve needle lead screw component, wherein the valve seat component comprises a valve seat and a valve core seat; the nut component comprises a nut for mounting the valve needle lead screw component; and the lower end of the nut is sleeved with the upper end of the valve core seat. By the electric valve, the lower end of the nut which is used for mounting the valve needle lead screw component is connected with the upper end of the valve core seat in a sleeved mode, so that the coaxiality of the nut and a valve port of the valve core seat is extremely easy to guarantee, the coaxiality of a valve needle and the valve core seat is higher, and the problem that the valve port is loosely sealed or is subjected to eccentric wear can be solved. Meanwhile, because the coaxiality of the valve needle and the valve port is improved, the friction force can be obviously reduced when a rotor of a rotor component rotates, and the action reliability of the electric valve can be improved.
Description
Technical field
The present invention relates to the control valve technical field, relate in particular to a kind of mortor operated valve that is used for the regulated fluid flow.
Background technique
In air-conditioning, refrigerator, heat pump water heater and all kinds of refrigeration, heating device, adopt the flow of mortor operated valve regulated fluid usually.
Mortor operated valve generally includes valve component, nut assembly, needle screw component; Rotor assembly; Valve component generally includes valve core case, valve seat and connecting tube; Have valve port on the valve seat, the common integrally welded formation valve component of valve core case, valve seat and connecting tube, the needle of needle screw component is installed in the nut of nut assembly.
Special permission document (spy opens the 2010-25932 communique) discloses a kind of mortor operated valve, and the nut of nut assembly is fixed in the pilot sleeve, and pilot sleeve is fixed on the valve seat; Needle need be fixed in the valve port of valve seat again; Therefore the coaxality of valve seat and nut is had relatively high expectations, said electric valve need be controlled the coaxality that could guarantee valve core case and nut indirectly through assembling procedure repeatedly, and the coaxality of valve seat and nut receives the influence of the machining accuracy of a plurality of parts such as nut, pilot sleeve, valve seat, needle; Coaxality is difficult for guaranteeing; If needle and valve port disalignment phenomenon appear in valve core case and nut disalignment easily, and then cause the tight or valve port of sealing valve port the problem of eccentric wear to occur; Thereby make that the reliability of action of mortor operated valve is lower, working life that also can mortor operated valve is also shorter.
In addition, become a development trend of related domain at present with plastic materials alternative metals material, in the said electric valve; If nut adopts plastic material; Nut and pilot sleeve only are difficult for guaranteeing the join strength of the two through interference fit, connection reliability is lower, make nut can not adopt plastic material; Still must adopt expensive metal material, make that the processing cost of mortor operated valve is higher.
Therefore, how to develop a kind of nut and the higher mortor operated valve of valve core case coaxality, become the technical barrier that those skilled in the art need to be resolved hurrily.
Summary of the invention
The purpose of this invention is to provide a kind of mortor operated valve, the nut of this mortor operated valve, the coaxality of valve core case are higher.
To achieve these goals; The invention provides a kind of mortor operated valve; Comprise valve component, nut assembly, needle screw component, said valve component comprises valve seat, valve core case, and said nut assembly comprises the nut that is used to install said needle screw component; It is characterized in that the upper end suit of the lower end of said nut and said valve core case.
Preferably, insert in the endoporus of said nut lower end the upper end of said valve core case, and said valve core case and said nut are with the mode suit of Spielpassung, transition fit or interference fit.
Preferably, insert in the endoporus of said valve core case upper end the lower end of said nut, and said nut and said valve core case are with the mode suit of Spielpassung, transition fit or interference fit.
Preferably, said nut comprises plastic nut, endless metal connecting sheet, and said plastic nut adopts the engineering plastics molding and forming on the basis of said endless metal connecting sheet.
Preferably, the welding of the outside of said endless metal connecting sheet and said valve seat is fixing.
Preferably, the outside of said endless metal connecting sheet is provided with the outside breach that is no less than.
Preferably, the inboard of said endless metal connecting sheet is provided with the inner edge breach that is no less than; The ring part of said annular connecting sheet is provided with and is no less than one through hole.
Preferably, said needle screw component comprises that an end is provided with needle, the screw mandrel of needle cover; Said needle is located in the through hole of said valve core case, and an end of said needle inserts in the valve port of said valve seat, and the other end is provided with the needle endoporus, and an end of said screw mandrel inserts said needle endoporus through back-up ring.
Preferably, be provided with spring in the said needle endoporus, the end of said leading screw is against said spring.
Preferably, the upper end of said nut is provided with the endoporus that is used to install said screw mandrel, and the upper end of said endoporus is a pilot hole, and the lower end of said endoporus is a tapped hole, and it is secondary that the outside thread of this tapped hole and said screw mandrel forms motion thread.
Mortor operated valve provided by the invention; Be used to install the nut of needle screw component; The upper end of its lower end and valve core case is connected with the mode of suit; Make the coaxality of valve port of nut and valve core case very easily be guaranteed, and then make that the coaxality of needle and valve core case is higher, can avoid occurring the problem that eccentric wear appears in the tight or valve port of sealing valve port; Simultaneously, because the coaxality of needle and valve port is improved, the frictional force the during rotor rotation of rotor assembly can obviously reduce, and the reliable in action property of mortor operated valve also can improve.
In the preferred version, said nut comprises plastic nut, endless metal connecting sheet, and said plastic nut adopts the engineering plastics molding and forming on the basis of said endless metal connecting sheet.Nut adopts the together molding and forming of endless metal connecting sheet, and the main body of nut is the engineering plastics molding and forming, and when guaranteeing nut and valve seat join strength, the technology of nut is simple, manufacturing efficiency is higher, cost is lower.
Description of drawings
Fig. 1 is the sectional structure schematic representation of a kind of embodiment of mortor operated valve provided by the present invention;
Fig. 2 is the structural representation of nut among Fig. 1;
Fig. 3 is the structural representation of endless metal connecting sheet among Fig. 2;
Structural representation when Fig. 4 does not install shell for mortor operated valve among Fig. 1;
Fig. 5 is the sectional structure schematic representation of the another kind of embodiment of mortor operated valve provided by the present invention;
Wherein, among Fig. 1-Fig. 5:
Embodiment
In order to make those skilled in the art better understand technological scheme of the present invention, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Please referring to Fig. 1-Fig. 4, Fig. 1 is the sectional structure schematic representation of a kind of embodiment of mortor operated valve provided by the present invention; Fig. 2 is the structural representation of nut among Fig. 1; Fig. 3 is the structural representation of endless metal connecting sheet among Fig. 2; Structural representation when Fig. 4 does not install shell for mortor operated valve among Fig. 1.
As shown in Figure 1, mortor operated valve provided by the invention comprises valve component, nut assembly, needle screw component and rotor assembly.
Wherein, Valve component comprises valve core case 11, valve seat 12, first connecting tube 13, second connecting tube 14; Valve core case 11, valve seat 12, first connecting tube 13, the second connecting tube 14 formation valve component that links into an integrated entity; Valve core case 11, valve seat 12, first connecting tube 13, second connecting tube 14 can be integral through being welded to connect, also can be one-body molded.
Said nut assembly comprises the nut that is used to install the needle screw component; The excircle on the top of nut is set with spring guide rail 33 and stop slip ring 34, the upper end suit of the lower end of nut and valve core case 11, and the side of nut and valve seat 12 are fixing; In a kind of concrete mode of execution; As shown in Figure 1, insert in the endoporus of said nut lower end the upper end of valve core case 11, valve core case 11 and the mode suit of said nut with Spielpassung, transition fit or interference fit.。
Said needle screw component can comprise needle 21, needle cover 22, screw mandrel 23, back-up ring 24, spring 25; Needle 21 links into an integrated entity with needle cover 22; Needle 21 specifically can link into an integrated entity through modes such as welding, interference are press-fitted with needle cover 22; The head of screw mandrel 23 is set with back-up ring 24, and back-up ring 24 can mode and screw mandrel 23 suits such as be press-fitted through welding, interference, and screw mandrel 23 is installed in the endoporus of needle 21; Also be provided with spring 25 in needle 21 endoporus, the end of screw mandrel 23 can be against spring 25.
Rotor assembly comprises that rotor 41, rotor retainer 42 and the connecting body that is connected the two, rotor assembly are fixed on the upper end of screw mandrel 23.
In the concrete scheme, mortor operated valve also comprises shell 5, and shell 5 is sleeved on the valve seat 12, is used for sealed valve body.
Mortor operated valve provided by the invention; Be used to install the nut of needle screw component; The upper end of its lower end and valve core case 11 is connected with the mode of suit, and the side of nut and valve seat 12 are fixing, makes the coaxality of valve port of nut and valve core case 11 very easily be guaranteed; And then make needle 21 higher with the coaxality of valve core case 11, can avoid occurring the problem that eccentric wear appears in the tight or valve port of sealing valve port; Simultaneously, because the coaxality of needle 21 and valve port is improved, the frictional force the when rotor 41 of rotor assembly rotates can obviously reduce, and the reliable in action property of mortor operated valve also can improve.
In the foregoing description; The needle screw component, rotor assembly and housing 5 are irrelevant with inventive point of the present invention, and the present invention is not to the needle screw component; The structure of rotor assembly and housing 5 is done concrete qualification; The needle screw component, rotor assembly and housing 5 adopt other any structure, all should be in protection scope of the present invention.
In the preferred version; Like Fig. 2, shown in Figure 3; Nut comprises plastic nut 32, endless metal connecting sheet 31, endless metal connecting sheet 31 in the form of a ring, middle concrete through hole; Endless metal connecting sheet 31 can form through metallic plate punching, and plastic nut 32 adopts the engineering plastics molding and forming on the basis of said endless metal connecting sheet 31.
Nut adopts the 31 together molding and forming of endless metal connecting sheet, and the main body of nut is the engineering plastics molding and forming, and when guaranteeing nut and valve seat 12 join strengths, the technology of nut is simple, manufacturing efficiency is higher, cost is lower.
In the concrete scheme; The outside of endless metal connecting sheet 31 and valve seat 12 welding are fixing; Nut is fixedly connected with valve seat 12 through endless metal connecting sheet 31, and endless metal connecting sheet 31 can form firm being connected with valve seat 12, can guarantee the join strength of nut and valve seat 12.
In the preferred scheme; The inboard of endless metal connecting sheet 31 is provided with the inner edge breach 31-1 that is no less than; The ring part of endless metal connecting sheet 31 is provided with many one intercommunicating pore 31-2; Inner edge breach 31-1 and intercommunicating pore 31-2 can strengthen the join strength of annular metal connecting sheet both sides and plastic nut 32 about in the of 31, can prevent that endless metal connecting sheet 31 and plastic nut 32 from relatively rotating.
In the preferred version; The outside of endless metal connecting sheet 31 is provided with the outside breach 31-3 that is no less than; Outside breach 31-3 can be used as the passage of refrigerant; Play the effect of pressure at both sides pressure up and down of balance connecting sheet, in the concrete scheme, one of them outside breach 31-3 can be used to carry out spacing to the afterbody of spring 25 guide rails.
In the concrete scheme, like Fig. 3, shown in Figure 4, plastic nut 32 can be divided into plastic nut top 32-1, plastic nut middle part 32-2, plastic nut bottom 32-3 three parts.
The periphery of plastic nut top 32-1 is a stop guide rail sleeve dress portion, is used for pocketed springs 25 guide rails and stop slip ring 34; The top of the endoporus of plastic nut top 32-1 is the screw mandrel pilot hole; The bottom of this endoporus is an interior threaded hole; Said screw mandrel pilot hole and the little Spielpassung of screw mandrel 23 upper end cylindricals; For rotor 41 provides the positioning and guiding of circumferencial direction, it is secondary that the outside thread on said interior threaded hole and the screw mandrel 23 forms motion thread.Plastic nut middle part 32-2 external diameter is big than plastic nut top 32-1 external diameter, and 31 injection mouldings of endless metal connecting sheet are connected plastic nut middle part 32-2.Plastic nut bottom 32-3 is used for forming suit with the upper end of valve core case 11.
Mortor operated valve provided by the invention can adopt following method to assemble.
The needle screw component is inserted in the nut from the below of nut; And with needle screw component screw-in nut; Again needle screw component, nut sleeve are contained on the valve core case 11, and the mode that adopts welding welds together the edge and the valve seat 12 of endless metal connecting sheet 31; Set the position of stop slip ring 34 and rotor retainer 42, rotor assembly is sleeved on the top of screw mandrel 23, and adopt the mode of welding that the connecting body on screw mandrel 23 and the rotor 41 is welded together; At last shell 5 is sleeved on the valve seat 12, and adopts the mode of welding that shell 5 and valve seat 12 sealings are welded.
In the foregoing description; Nut adopts the structure of endless metal connecting sheet 31 and plastic nut 32 molding and forming; Mortor operated valve provided by the present invention is not limited thereto; Nut also can adopt the nut of metallic material, as long as nut and valve core case 11 all should be in protection scope of the present invention with the fixing structure of the mode of suit.
In the foregoing description; The suit mode of nut and valve core case 11 is that insert in the endoporus of said nut lower end the upper end of valve core case 11; Between the two with the mode suit of Spielpassung, transition fit or interference fit; The present invention is not limited thereto, can also insert the form in the endoporus of valve core case 11 upper ends for the lower end of nut, and following examples are carried out brief account to this kind situation.
Please referring to Fig. 5, Fig. 5 is the sectional structure schematic representation of the another kind of embodiment of mortor operated valve provided by the present invention.
As shown in Figure 5; Insert in the endoporus of valve core case 11 upper ends the lower end of nut; The upper end of the lower end of nut and valve core case 11 forms suit with the mode of Spielpassung, transition fit or interference fit, and all the other practical implementation processes are similar to the above embodiments, no longer are described in detail at this.
Among the above embodiment; The lower end of nut and the upper end of valve core case are with the mode suit of Spielpassung, transition fit or interference fit; The present invention is not limited thereto, and the lower end of nut and the upper end of valve core case mode suit such as can also be threaded all should be in protection scope of the present invention.
The above only is the description of the preferred implementation of invention; Should be pointed out that finiteness, and objectively have unlimited concrete structure owing to literal expression; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (10)
1. mortor operated valve; Comprise valve component, nut assembly, needle screw component, said valve component comprises valve seat, valve core case, and said nut assembly comprises the nut that is used to install said needle screw component; It is characterized in that the upper end suit of the lower end of said nut and said valve core case.
2. mortor operated valve according to claim 1 is characterized in that, insert in the endoporus of said nut lower end the upper end of said valve core case, and said valve core case and said nut are with the mode suit of Spielpassung, transition fit or interference fit.
3. mortor operated valve according to claim 1 is characterized in that, insert in the endoporus of said valve core case upper end the lower end of said nut, and said nut and said valve core case are with the mode suit of Spielpassung, transition fit or interference fit.
4. according to each described mortor operated valve of claim 1-3, it is characterized in that said nut comprises plastic nut, endless metal connecting sheet, said plastic nut adopts the engineering plastics molding and forming on the basis of said endless metal connecting sheet.
5. mortor operated valve according to claim 4 is characterized in that, the outside of said endless metal connecting sheet and the welding of said valve seat are fixing.
6. mortor operated valve according to claim 5 is characterized in that, the outside of said endless metal connecting sheet is provided with the outside breach that is no less than.
7. mortor operated valve according to claim 5 is characterized in that, the inboard of said endless metal connecting sheet is provided with the inner edge breach that is no less than; The ring part of said annular connecting sheet is provided with and is no less than one through hole.
8. mortor operated valve according to claim 4 is characterized in that, said needle screw component comprises that an end is provided with needle, the screw mandrel of needle cover; Said needle is located in the through hole of said valve core case, and an end of said needle inserts in the valve port of said valve seat, and the other end is provided with the needle endoporus, and an end of said screw mandrel inserts said needle endoporus through back-up ring.
9. mortor operated valve according to claim 8 is characterized in that, is provided with spring in the said needle endoporus, and the end of said leading screw is against said spring.
10. mortor operated valve according to claim 8; It is characterized in that the upper end of said nut is provided with the endoporus that is used to install said screw mandrel, the upper end of said endoporus is a pilot hole; The lower end of said endoporus is a tapped hole, and it is secondary that the outside thread of this tapped hole and said screw mandrel forms motion thread.
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105152341A CN102454818A (en) | 2010-10-15 | 2010-10-15 | Electric valve |
| CN201180049867.0A CN103249977B (en) | 2010-10-15 | 2011-06-17 | Electric valve |
| KR1020127008550A KR101375377B1 (en) | 2010-10-15 | 2011-06-17 | An electric valve |
| JP2012538187A JP5510685B2 (en) | 2010-10-15 | 2011-06-17 | Motorized valve |
| PCT/CN2011/075863 WO2012048581A1 (en) | 2010-10-15 | 2011-06-17 | Electric valve |
| KR1020137012518A KR101458424B1 (en) | 2010-10-15 | 2011-10-14 | Electrically-operated valva |
| CN201180049850.5A CN103261765B (en) | 2010-10-15 | 2011-10-14 | Electrically-operated valve |
| JP2013533085A JP5716980B2 (en) | 2010-10-15 | 2011-10-14 | Motorized valve |
| KR1020137012475A KR101455952B1 (en) | 2010-10-15 | 2011-10-14 | Electrical valve |
| PCT/CN2011/080796 WO2012048658A1 (en) | 2010-10-15 | 2011-10-14 | Electrically-operated valve |
| PCT/CN2011/080797 WO2012048659A1 (en) | 2010-10-15 | 2011-10-14 | Electrical valve |
| CN201180049855.8A CN103261766B (en) | 2010-10-15 | 2011-10-14 | Electrical valve |
| JP2013533084A JP5987834B2 (en) | 2010-10-15 | 2011-10-14 | Motorized valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105152341A CN102454818A (en) | 2010-10-15 | 2010-10-15 | Electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102454818A true CN102454818A (en) | 2012-05-16 |
Family
ID=45937869
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105152341A Pending CN102454818A (en) | 2010-10-15 | 2010-10-15 | Electric valve |
| CN201180049867.0A Active CN103249977B (en) | 2010-10-15 | 2011-06-17 | Electric valve |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180049867.0A Active CN103249977B (en) | 2010-10-15 | 2011-06-17 | Electric valve |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5510685B2 (en) |
| KR (1) | KR101375377B1 (en) |
| CN (2) | CN102454818A (en) |
| WO (1) | WO2012048581A1 (en) |
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| CN104565392A (en) * | 2015-01-05 | 2015-04-29 | 浙江三花股份有限公司 | Electric valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103249977A (en) | 2013-08-14 |
| JP2012533717A (en) | 2012-12-27 |
| CN103249977B (en) | 2014-12-10 |
| KR20120066032A (en) | 2012-06-21 |
| KR101375377B1 (en) | 2014-03-17 |
| WO2012048581A1 (en) | 2012-04-19 |
| JP5510685B2 (en) | 2014-06-04 |
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