CN104132149A - Electric valve - Google Patents
Electric valve Download PDFInfo
- Publication number
- CN104132149A CN104132149A CN201310159995.1A CN201310159995A CN104132149A CN 104132149 A CN104132149 A CN 104132149A CN 201310159995 A CN201310159995 A CN 201310159995A CN 104132149 A CN104132149 A CN 104132149A
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- CN
- China
- Prior art keywords
- nut
- valve
- installation cavity
- mortor operated
- screw mandrel
- 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.)
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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
- 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
- F16K1/42—Valve 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
- 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
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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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
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses an electric valve. The electric valve comprises a valve base, and a shell mounted on the valve base, wherein a nut is mounted on the valve base; a lead screw, and a magnetic rotor and a valve needle both mounted on the lead screw are arranged in the shell; the lead screw has an external thread part fitting an internal thread part of a nut; the valve base has a nut mounting cavity for movably arranging the nut; the axial distance of the nut mounting cavity is larger than the axial length of the nut; and the valve base further has a limiting part for limiting the nut to peripherally rotate in the nut mounting cavity. The nut fitting the lead screw is designed as an axial moving structure to satisfy the design demands of the rotation locking travel of the lead screw and the movement travel of the valve needle; the lead screw and the valve needle connected to the end of the lead screw can be designed as an integrated structure, or can be fixedly connected through a third part, so that the uniform mass distribution of the lead screw and the valve needle in the peripheral direction is facilitated, and the axis of the lead screw and the axis of the valve needle are collinear; and when the magnetic rotor is rotated, the phenomenon of vibration or inaccurate guidance due to eccentric floating connection of the two is eliminated, so that the working reliability and stability of the electric valve are improved.
Description
Technical field
The present invention relates to fluid control component technical field, particularly a kind of mortor operated valve.
Background technique
In cooling and heating technical field, mortor operated valve is the cold medium flux controlling component of heating-cooling equipment, and its working procedure is generally: along with energising or the power-off of coil device, needle regulates the aperture of valve port, thereby regulates the flow of refrigerant.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of mortor operated valve in prior art.
In the prior art, as shown in Figure 1, mortor operated valve 10 ' has shell 1 ' and valve seat 3 ', the inside of shell 1 ' arranges magnet rotor 2 ', screw mandrel 8 ', nut 5 ', the upper end of screw mandrel 8 ' is connected with magnet rotor 2 ', and the outside thread 8a ' of screw mandrel 8 ' and the internal thread 5a ' of nut 5 ' form screw pair.The lower end of screw mandrel 8 ' connects needle 9 ', by being sleeved on the driving of shell 1 ' outside stator module (not shown in FIG.), magnet rotor 2 ' is synchronizeed rotation with screw mandrel 8 ', screw pair effect by screw mandrel 8 ' with nut 5 ', drive needle 9 ' synchronously to rotate, realize moving axially of needle 9 ' simultaneously, with valve port 4 ' contact separation to control the cold medium flux of valve port 4 ' of flowing through.Under perfect condition, when needle 9 ' against valve port 4 ', magnet rotor 2 ' also stops operating, but due to the assembly error of each parts and the use of needle 9 ' wearing and tearing, this is obviously unpractical, in prior art, the stop stroke of the screw mandrel 8 ' of general design mortor operated valve is slightly larger than the stroke of needle 9 ', needle 9 ' can be pressed on valve port like this, realizes the reliability of mortor operated valve work.
For meeting above-mentioned designing requirement, screw mandrel 8 ' the bottom of mortor operated valve 10 ' arranges an endoporus 8b ', insert in screw mandrel 8 ' endoporus 8b ' needle 9 ' upper end portion, between screw mandrel 8 ' and needle 9 ', be provided with a Compress Spring 50 ', spacing by an axle sleeve 15 ', screw mandrel 8 ' is linked to be one with needle 9 '.In valve body closing process, magnet rotor 2 ' drives screw mandrel 8 ' and needle 9 ' one rotation, in the time that needle 9 ' has just contacted with valve port 4 ' (this place is called dead-center position), needle 9 ' cannot move at axial position relative to valve port 4 ' again, but rotor banding movable wire bar 8 ' is rotatable certain angle still, until that the shaft-like snubber 6 ' in upper end is stopped structure 7 ' institute is spacing, cannot further rotate (this place is called lower stop position).
When magnet rotor 2 ' turn to from dead-center position final in this segment limit of stop position, Compress Spring 50 ' is compressed, the relative needle 9 ' of screw mandrel 8 ' has one to move axially.Therefore, equally, in the time that after valve body full cut-off, (lower stop position) drives valve again, under the driving of external input signal, magnet rotor 2 ' drives screw mandrel 8 ' to start to rotate, and the decrement of Compress Spring 50 ' reduces, but before arrival dead-center position, because of the effect of spring force, needle 9 ', passes through without fluid still in contact condition with valve port 4 '.Until cross after dead-center position, needle 9 ' has been abutted together with axle sleeve 15 ', and needle 9 ' starts to synchronize to move axially with screw mandrel 8 ', starts to separate with valve port 4 ', now has fluid to pass through.
Above-mentioned needle 9 ' floating connection screw mandrel 8 ', therefore in the time that installing, mortor operated valve exists unavoidably in alignment error and using process, the reasons such as Compress Spring 50 ' is easy to be offset, wearing and tearing, cause the axis of screw mandrel 8 ' and needle 9 ' two parts not on same straight line, and then cause needle 9 ' at when work shutoff valve port 4 ' completely, have a strong impact on the reliability of mortor operated valve work.
In view of this, how mortor operated valve of the prior art being improved, improve the coaxality of screw mandrel and needle, is the problem that those skilled in the art need solution badly.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of mortor operated valve, and the structural design of this mortor operated valve can significantly improve the coaxality of screw mandrel and needle, improves the reliability of mortor operated valve work.
For solving the problems of the technologies described above, the invention provides a kind of mortor operated valve, comprise and be provided with the valve seat of valve port and be installed on the shell on valve seat, on described valve seat, nut is installed, in described shell, be provided with screw mandrel and be fixed on the magnet rotor on screw mandrel, on described screw mandrel, be provided with needle; Described screw mandrel has the screw section of matching with the screw section of described nut, and described screw mandrel is arranged on described nut by described screw section; Described valve seat has the nut installation cavity for described nut is set actively, and the axial distance of described nut installation cavity is greater than the axial length of described nut; Described valve seat also has the limit position part that the described nut of restriction circumferentially rotates in described nut installation cavity.
Preferably, also comprise the elastic member press-fiting between the end face of described nut and the chamber wall of described nut installation cavity, and the restoring force direction of described elastic member is towards described valve port.
Preferably, described valve seat comprises main part and be installed on the cylindrical shell on described main part, and described cylindrical shell has ladder hole and connects described main part with its large aperture end, and described nut installation cavity is formed between the step surface and described main part of described ladder hole.
Preferably, described main part has guide sleeve, and the large aperture end of described cylindrical shell connects described main part by described guide sleeve; Described nut installation cavity is formed between the step surface and described guide sleeve of described ladder hole.
Preferably, described valve seat comprises main part and the cylindrical shell that is installed on described main part, and described cylindrical shell has ladder hole and connects described main part with its small aperture end, and the large aperture end of described cylindrical shell is provided with guide sleeve; Described nut installation cavity is formed between the step surface and described guide sleeve of described ladder hole.
Preferably, described valve seat comprises main part and the cylindrical shell that is installed on described main part, and described nut installation cavity is formed between described cylindrical shell and described main part; Described cylindrical shell comprises the upper cylinder and the lower cylinder body that are connected.
Preferably, the guide rail of the chocking construction of this mortor operated valve is fixed on the outside of described upper cylinder.
Preferably, described elastic member is helical spring, and described helical spring is connected between the internal chamber wall of described cylindrical shell and the end face of described nut.
Preferably, described limit position part comprises the lug boss of being located on one of the inner circle wall of described nut installation cavity and periphery wall of described nut, another one has the depressed part matching with described lug boss, and the width dimensions of described depressed part equates with the width dimensions of described lug boss.
Preferably, described limit position part comprises the inner circle wall of described nut installation cavity and the periphery wall of described nut, the identical and non-circular structure of the cross-sectional profiles of the cross-sectional profiles of the inner circle wall of described nut installation cavity and the periphery wall of described nut.
The scope of the maximum axial distance that preferably, described nut moves along described nut installation cavity is: 0.5-3 pitch doubly.
Preferably, the maximum axial distance that described nut moves along described nut installation cavity is 1-2 pitch doubly.
Mortor operated valve of the present invention, comprises valve seat and is installed on the shell on valve seat, described valve seat is provided with nut, is provided with screw mandrel and is all installed on magnet rotor, the needle on screw mandrel in described shell; Described screw mandrel has the external thread part matching with the internal thread part of described nut; Described valve seat has the nut installation cavity that described nut is set for activity, and the axial distance of described nut installation cavity is greater than the axial length of described nut; Described valve seat also has the limit position part that the described nut of restriction circumferentially rotates in described nut installation cavity.
Mortor operated valve provided by the present invention is by opening valve state-transition when closing valve state, magnet rotor drives screw mandrel to rotate, now be installed on nut on valve seat by the pair of nut support screw and the magnet rotor that coordinate with screw mandrel, and the circumferential limited parts constraint of nut, can not circumferentially rotate, therefore under the effect of the screw pair between screw mandrel and nut, screw mandrel moves downward relative nut vertically, and then drive the needle that is connected in screw mandrel underpart to move downward together, when screw mandrel moves downward while being resisted against valve port position to the end of needle, now valve port can be played a supporting role to screw mandrel and magnet rotor, when screw mandrel is rotated further, because screw mandrel can not continue to move downward, nut is moved upward by the acting in nut installation cavity of matching thread pair between screw mandrel vertically, until the slip ring being arranged on mortor operated valve moves to lower stop position.
When mortor operated valve is when closing valve state and be converted into out valve state, magnet rotor drives screw mandrel to rotate backward, now because screw mandrel is supported on valve port position, nut is in quick condition, therefore under the effect of the screw pair between screw mandrel and nut, first nut first will move downward, in the time that moving to the diapire of nut installation cavity, it can not move downward again, now nut support screw mandrel and magnet rotor, then, screw mandrel is rotated further, and screw mandrel just drives valve needle movements, make needle gradually away from valve port motion, until the slip ring being arranged on mortor operated valve moves to stop position.
The structure that in the present invention, the nut coordinating with screw mandrel is designed to axial motion meets stop stroke that the screw mandrel of mortor operated valve rotates and the design requirement of valve needle movements stroke, in prior art, realize above-mentioned functions and compare by being arranged at Compress Spring between needle and screw mandrel, mortor operated valve of the present invention can be without arranging and be connected in Compress Spring on screw mandrel again, screw mandrel is together with being connected and being fixedly connected on the needle of its end, be conducive to like this screw mandrel and needle week mass distribution be upwards uniformly, two axial lines conllinear; In the time that magnet rotor rotates, eliminate both eccentric and produce vibration or the phenomenon such as inaccurate that leads, improve the reliability and stability of mortor operated valve work.
Additionally, drive because mortor operated valve adopts electromagnetic force, always wish to reduce as much as possible the frictional force in each parts rotation process, improve the performance of valve body, extend the valve body life-span.Wherein, the frictional force between screw pair is to hinder the main frictional force of valve body operation, and screw pair more less friction is less.
Because the mortor operated valve providing in the present invention is to realize by the axial motion of nut, therefore offer spring mounting hole without the underpart at screw mandrel again, can correspondingly reduce the diameter of screw mandrel, and then reduce the diameter of the screw pair coordinating with nut, while greatly reducing nut and screw mandrel motion, the friction torque that matching thread by-product is raw, reduce gearing friction power, and then, do not changing on the basis of transfer motion power, can increase port size, improve the performance of valve body.
In a kind of preferred implementation, also comprise the elastic member press-fiting between the end face of described nut and the chamber wall of described nut installation cavity, and the restoring force direction of described elastic member is towards described valve port.
In this set-up mode, when mortor operated valve is converted into while closing valve state by opening valve state, nut is when nut installation cavity moves upward, and the elastic member that nut is in contact with it compression, until the slip ring being arranged on mortor operated valve moves to lower stop position; Like this, when mortor operated valve is when closing valve state and be converted into out valve state, nut is also subject to the restoring force of elastic member in the axial direction, more be conducive to increase captive nut in the time that screw mandrel rotates along its axial power moving, increase the reliability that mortor operated valve is worked under different angle of assembling position, mortor operated valve is installed and used more convenient.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of mortor operated valve in prior art;
Fig. 2 is mortor operated valve the first embodiment's provided by the present invention cross-sectional view;
Fig. 3 is mortor operated valve shown in Fig. 2 in just closing the local enlarged diagram of valve dead-center position;
Fig. 4 is the local enlarged diagram of mortor operated valve shown in Fig. 2 in lower abut position;
Fig. 5 is mortor operated valve the second embodiment's provided by the present invention sectional drawing;
Fig. 6 is Fig. 5 in just closing the local enlarged diagram of valve dead-center position;
Fig. 7 is mortor operated valve provided by the present invention the 3rd embodiment's sectional drawing;
Fig. 8 is the schematic three dimensional views of nut in the first embodiment of limit position part in mortor operated valve provided by the present invention;
Fig. 9 is the schematic three dimensional views of the nut installation cavity that matches with nut shown in Fig. 8;
Figure 10 is the schematic three dimensional views of nut installation cavity in limit position part the second embodiment in mortor operated valve provided by the present invention;
Figure 11 is the schematic three dimensional views of the nut that matches with the installation cavity of nut shown in Figure 10.
Wherein, in Fig. 1, the corresponding relation between reference character and component names is:
10 ' mortor operated valve; 1 ' shell; 2 ' magnet rotor; 3 ' valve seat; 4 ' valve port; 5 ' nut; 5a ' internal thread; 6 ' snubber; 7 ' chocking construction; 8 ' screw mandrel; The outside thread of 8a ' screw mandrel; 8b ' screw mandrel endoporus; 9 ' needle; 50 ' Compress Spring; 9 ' needle; 15 ' axle sleeve.
Corresponding relation in Fig. 2 to Figure 11 between reference character and component names is:
1 shell; 2 magnet rotors; 3 valve seats; 3a valve port; 4 valve seat cores; 5 nuts; The internal thread part of 5a nut; 5b lug boss; The lower end surface of 5c nut; The upper-end surface of 5d nut; 5e the first plane; 6 helical springs; 7 chocking constructions; 8 screw mandrels; The external thread part of 8a screw mandrel; 9 needles; 13 position-limited levers; 30 cylindrical shells; 301 upper cylinders; 302 lower cylinder bodys; 30a the second plane; 30b hatch frame; 31 guide sleeves; The displacement of the relative valve seat of t nut.
Embodiment
Core of the present invention is for a kind of mortor operated valve is provided, and the structural design of this mortor operated valve can significantly improve the coaxality of screw mandrel and needle on the one hand, improves the reliability of mortor operated valve work; Meanwhile, can reduce on the other hand screw mandrel and and nut between screw pair fit diameter, improve the performance of valve body.
In order to make those skilled in the art understand better technological scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 2, Fig. 3, Fig. 4, Fig. 2 is mortor operated valve the first embodiment's provided by the present invention cross-sectional view; Fig. 3 is mortor operated valve shown in Fig. 2 in just closing the local enlarged diagram of valve dead-center position; Fig. 4 is the local enlarged diagram of mortor operated valve shown in Fig. 2 in lower abut position.
In basic technology scheme of the present invention, mortor operated valve comprises valve seat 3 and is arranged at the shell 1 on valve seat 3, in shell 1, be provided with magnet rotor 2, magnet rotor 2 is provided with inner chamber, in inner chamber, be provided with the screw mandrel 8 fixing with magnet rotor 2, screw mandrel 8 has the screw section 8a matching with the screw section 5a of nut 5, screw mandrel 8 is arranged on nut 5 by described screw section 8a, screw section 8a on screw mandrel 8 can be outside thread, also can be internal thread, correspondingly the screw section 5a on nut 5 can be internal thread or the outside thread coordinating, the outside of nut 5 is provided with chocking construction 7, chocking construction is provided with guide rail, under the drive of stop component, slip ring can the rotation between upper stop section and the lower stop section of chocking construction 7 along guide rail.
Along with magnet rotor 2 rotates, screw mandrel 8 rotates thereupon, and moves upward vertically or move downward, and the valve port 3a on valve seat 3 is opened or closed to screw mandrel 8 and then the needle 9 that drives its below to connect, or regulate the aperture of valve port 3a; Meanwhile, along with magnet rotor 2 rotates, stop component drives slip ring to rotate on guide rail, and due to the position-limiting action of upper stop section and lower stop section, in these two positions, magnet rotor 2 stops operating, thus so that restriction screw mandrel 8 vertically upwards or the displacement moving downward.
As shown in Figure 2, on the basis of above-mentioned prior art, the valve seat 3 of mortor operated valve has the nut installation cavity that nut 5 is set for activity, and the axial distance of nut installation cavity is greater than the axial length of nut 5, so as nut 5 in nut installation cavity along its axial motion; Valve seat 3 also has the limit position part that restriction nut 5 circumferentially rotates in nut installation cavity.
In conjunction with Fig. 3 and Fig. 4, mortor operated valve provided by the present invention is by opening valve state-transition when closing valve state, magnet rotor 2 drives screw mandrel 8 to rotate, now be installed on nut 5 on valve seat 3 by the pair of nut support screw 8 and the magnet rotor 2 that coordinate with screw mandrel 8, and the circumferential limited parts constraint of nut 5, can not circumferentially rotate, therefore under the effect of the screw pair between screw mandrel 8 and nut 5, screw mandrel 8 moves downward relative nut 5 vertically, and then drive the needle 9 that is connected in screw mandrel 8 underparts to move downward together, when screw mandrel 8 moves downward while being resisted against valve port 3a position to the end of needle 9, now valve port 3a can play a supporting role to screw mandrel 8 and magnet rotor 2, when screw mandrel 8 is rotated further, because screw mandrel 8 can not continue to move downward, nut 5 is moved upward by the effect of the matching thread pair between screw mandrel 8, until the slip ring being arranged on mortor operated valve moves to lower stop position, as shown in Figure 4, the displacement of nut 5 relative valve seats 3 is t.
When mortor operated valve is when closing valve state and be converted into out valve state, magnet rotor 2 drives screw mandrel 8 to rotate backward, now because screw mandrel 8 is supported on valve port position, nut 5 is in quick condition, therefore under the effect of the screw pair between screw mandrel 8 and nut 5, first nut 5 first will move downward, in the time that its diapire that moves to nut installation cavity can not move downward again, now nut 5 is by the secondary support screw 8 of matching thread and magnet rotor 2, then, screw mandrel 8 is rotated further, screw mandrel 8 just drives needle 9 to move upward, make needle 9 gradually away from valve port 3a, until the slip ring being arranged on mortor operated valve moves to stop position.
The structure that in the present invention, the nut 5 coordinating with screw mandrel 8 is designed to axial motion meets stop stroke that the screw mandrel 8 of mortor operated valve rotates and the design requirement of needle 9 movement travels, in prior art, realize above-mentioned functions and compare by being arranged at Compress Spring between needle 9 and screw mandrel 8, mortor operated valve of the present invention can be without arranging and be connected in Compress Spring on screw mandrel 8 again, together with screw mandrel 8 is fixedly connected on connected needle 9, the mode that is fixedly connected with of screw mandrel 8 and needle 9 can be by implemented in many forms: for example screw mandrel 8 and needle 9 can be integral type structure, or both connect by modes such as welding, or both can also achieve a fixed connection by the 3rd.Be conducive to like this screw mandrel 8 and needle 9 week mass distribution be upwards uniformly, two axial lines conllinear; In the time that magnet rotor 2 rotates, eliminate both floating connections eccentric and cause vibration or the phenomenon such as inaccurate that leads, improve the reliability and stability of mortor operated valve work.
Additionally, drive because mortor operated valve adopts electromagnetic force, always wish to reduce as much as possible the frictional force in each parts rotation process, improve the performance of valve body, extend the valve body life-span.Wherein, the frictional force between screw pair is to hinder the main frictional force of valve body operation, and screw pair more less friction is less.
Because the mortor operated valve providing in the present invention is to realize by the axial motion of nut 5, therefore without offering spring mounting hole in the underpart of screw mandrel 8 again, can greatly reduce the diameter of screw mandrel 8, and then reduce the diameter of the screw pair coordinating with nut 5, when greatly reducing nut 5 and moving with screw mandrel 8, the friction torque that matching thread by-product is raw, reduce gearing friction power, and then, do not changing on the basis of transfer motion power, can increase valve port 3a size, improve the performance of valve body.
Further, mortor operated valve provided by the present invention can also comprise the elastic member press-fiting between the end face of nut 5 and the chamber wall of nut installation cavity, and the restoring force direction of elastic member is towards valve port 3a, particularly, elastic member can be arranged between the upper-end surface of nut 5 and the roof of nut installation cavity; In this set-up mode, when mortor operated valve is converted into while closing valve state by opening valve state, nut 5 is when nut installation cavity moves upward, and the elastic member that nut 5 is in contact with it compression, until the slip ring being arranged on mortor operated valve moves to lower stop position; Like this, when mortor operated valve is when closing valve state and be converted into out valve state, nut 5 is also subject to the restoring force of elastic member in the axial direction, this restoring force provide captive nut 5 in the time that screw mandrel 8 rotates along its axial power moving, increase the reliability that mortor operated valve is worked under different angle of assembling orientation such as (laterally or) inclinations position, mortor operated valve is installed and used more convenient.
In above-described embodiment, no matter mortor operated valve is in closing the valve state initial stage, and elastic member is also in compressive state, stable being resisted against on valve seat 3 of lower end surface 5c that is conducive to like this nut, and nut 5 can be directly or indirectly against valve seat 3 certainly.
Certainly, elastic member also can be arranged between the lower end surface of nut 5 and the diapire of nut installation cavity, in the time that nut 5 moves upward, elastic member is elongated.
Elastic member herein can be spring, also can other meet the elastic element of designing requirement for rubber etc.Taking elastic member as the helical spring 6 of peripheral part that is set in screw mandrel 8 is as example, introduce mortor operated valve preferred embodiment several below.
In the first embodiment, valve seat 3 comprises main part and the cylindrical shell 30 that is installed on main part, and cylindrical shell 30 has ladder hole and connects main part with its large aperture end, and nut installation cavity is formed between the step surface and main part of ladder hole; It should be noted that, main part is herein to except cylindrical shell 30, the general designation of miscellaneous part on valve seat 3.
In this mode of execution, nut installation cavity is formed by the main part of cylindrical shell 30 and valve seat 3, the internal surface of cylindrical shell 30 can play leading role to being arranged at its inner elastic member, while being conducive to elastic member compression, be out of shape vertically, avoid contacting with screw mandrel 8, rub, the consumption to energy as far as possible when reducing nut 5 and moving, be conducive to improve the overall performance of mortor operated valve, and cylindrical shell 30 contacts with main part by perisporium, and area of contact is larger, can play more stable support.
Further, on main part, also there is guide sleeve 31, the large aperture end of cylindrical shell 30 connects main part by described guide sleeve 31, guide sleeve 31 is for the guiding of screw mandrel 8 axial motions, nut installation cavity is formed between the step surface and guide sleeve 31 of ladder hole, distance between the interior edge face of step surface and guide sleeve 31 is the axial distance of nut installation cavity, and screw mandrel 8 is connected needle 9 through ladder hole with the through hole on guide sleeve 31.
The guide sleeve 31 that this mode of execution middle cylinder body 30 arranges by end is installed on the main part of valve seat 3, ensureing on cylindrical shell 30 and main part basis easy to connect, can increase cylindrical shell 30 and main part surface of contact, so not only be conducive to structural stability, and can further reduce the internal diameter size of cylindrical shell 31, in addition, guiding when guide sleeve 31 can be further moves to screw mandrel 8 and needle 9, be conducive to the alignment of screw mandrel 8, needle 9 and valve port 3a, further increase the reliability of the valve port 3a control of mortor operated valve.
In the second embodiment, valve seat 3 can comprise main part and the cylindrical shell 30 that is installed on main part, and cylindrical shell 30 has ladder hole and connects main part with its small aperture end, and the large aperture end of cylindrical shell 30 is provided with guide sleeve 31; Nut installation cavity is formed between the step surface and described guide sleeve 31 of ladder hole; This structure, installing after cylindrical shell 30, still can regulate the parts of cylindrical shell 30 inside, without cylindrical shell 30 being dismantled to the maintenance that can complete cylindrical shell 30 inner pieces.
Please refer to Fig. 7, Fig. 7 is mortor operated valve provided by the present invention the 3rd embodiment's sectional drawing.
In the third embodiment, valve seat 3 can comprise main part and the cylindrical shell 30 that is installed on main part, and nut installation cavity is formed between cylindrical shell 30 and main part; Cylindrical shell 30 comprises the upper cylinder 301 and the lower cylinder body 302 that are connected; Nut 5 can be arranged in upper cylinder 301 and lower cylinder body 302 jointly, the upper end portion of upper cylinder 30 forms the roof of nut installation cavity, elastic member is arranged in the cavity that upper cylinder 301 surrounds, limit position part is arranged on lower cylinder body 302, in this mode of execution, add man-hour can will coordinate require be scattered on upper cylinder 301 and 302 liang of component of lower cylinder body, upper and lower two cylindrical shells coordinate the main part that rear and valve seat are installed to form nut installation cavity, not only be conducive to improve work efficiency, and can improve efficiency of assembling.
For the chocking construction 7 that is provided with upper stop section and lower stop section in magnet rotor 2 inner chambers, can also arrange by following mode of execution.
The guide rail of the chocking construction 7 of mortor operated valve can be fixed on the outside of upper cylinder 301, that is to say chocking construction 7, nut 5, elastic member are designed as a whole, also can be understood as, be to improve and obtain on the cover structure basis of guide rail in the prior art the setting of limit position part in the present invention, nut 5, elastic member be arranged to the inside of guide rail outer cover.
Arrange like this and can further reduce the axial length of mortor operated valve, reduce taking up room of mortor operated valve, be convenient to its installation in system.
The various embodiments described above Elastic parts can be helical spring 6, and the internal diameter of the large aperture pipeline section of the external diameter of helical spring 6 and cylindrical shell 30 is close, and the external diameter of above-mentioned helical spring 6 refers to helical spring 6 maximum cross section diameters; Can ensure that like this elastic member is out of shape vertically, while improving compressive strain, the accuracy of direction, bends while avoiding being out of shape, contacts with screw mandrel 8.
Nut installation cavity, except can being formed by tube structure form, can also be formed by following mode.
In the 4th kind of embodiment, in shell 1, be horizontally arranged with the riser of limiting board and support limit plate, the terminal part of riser is fixed on valve seat, and nut installation cavity is formed between limiting board and valve seat 3, and screw mandrel 8 connects needle through the through hole on limiting board; Which only surrounds nut installation cavity by limiting board and riser, relatively simple for structure, is conducive to reduce the weight of mortor operated valve.
It should be noted that, above-mentioned laterally referring to for screw mandrel 8 moving direction, is defined as screw mandrel 8 moving direction longitudinally, is laterally with longitudinally vertical direction.
Please refer to Fig. 8, Fig. 9, Fig. 8 is the schematic three dimensional views of nut in the first embodiment of limit position part in mortor operated valve provided by the present invention; Fig. 9 is the schematic three dimensional views of the nut installation cavity that matches with nut shown in Fig. 8.
In the respective embodiments described above, limit position part comprises the lug boss of being located on one of the inner circle wall of nut installation cavity and periphery wall of nut, one has the depressed part matching with lug boss in addition, the width dimensions of depressed part equates with the width dimensions of lug boss, certainly, both width dimensions described here equate that, for roughly equal, the width of lug boss can be slightly less than the width of depressed part; In Fig. 8 and Fig. 9, provided a kind of embodiment, be provided with lug boss 5b on the periphery wall of nut 5, on the inner circle wall of the nut installation cavity that cylindrical shell 30 surrounds, be provided with depressed part 30b, depressed part can be hatch frame certainly, as shown in Figure 9.The mode structure processing technology of this set limit position part is fairly simple, easily realizes, and is convenient to realize the quick assembling of mortor operated valve, improves the manufacturing efficiency of product.
Please refer to Figure 10 and Figure 11, Figure 10 is the schematic three dimensional views of nut installation cavity in limit position part the second embodiment in mortor operated valve provided by the present invention; Figure 11 is the schematic three dimensional views of the nut that matches with the installation cavity of nut shown in Figure 10.
In another kind of embodiment, limit position part in the respective embodiments described above can also comprise the inner circle wall of nut installation cavity and the periphery wall of nut 5 by described limit position part, the cross-sectional profiles of the cross-sectional profiles of the inner circle wall of nut installation cavity and the periphery wall of nut 5 is identical and non-circular, herein be all mutually size and shape is all identical.
For example, in Figure 11, the shape of cross section of the periphery wall of nut 5 is arc, on the periphery wall of nut 5, process the first plane 5e, correspondingly, the inner circle wall of the nut installation cavity that cylindrical shell 30 surrounds is also processed an axially extended second plane 30a, makes the shape of cross section of its inner circle wall also for arc, certainly, the shape of cross section of the periphery wall of nut 5 can be also the shape changeables such as triangle, quadrilateral, and the structure that also can adopt other restriction nut to rotate relative to periphery wall, will not enumerate at this.
One preferred embodiment in, needle in the various embodiments described above 9 and screw mandrel 8 can integrated members, eliminate both because floating connection causes bias, and the vibration producing or the phenomenon such as inaccurate that leads, improved the reliability of mortor operated valve work and stable; Certainly spool and screw mandrel 8 can be also Split type structure, are fixed together by link.
Moreover, it should be noted that, in above-mentioned any technological scheme, being provided with the parts of nut installation cavity and valve seat 3 can be fixed together by the means such as welding or press-fit.
In the various embodiments described above, the scope of the maximum axial distance that nut 5 moves along nut installation cavity can be designed as: 0.5-3 pitch doubly, these data can realize the reliable closure of needle 9 and valve port 3 in above-mentioned scope, and the driving force of stepper motor reliably valve needle 9 moves up and down.If exceed this scope, under the effect of elastic member, likely there is deadlock phenomenon in the screw pair between nut 5 and screw mandrel 8, cannot regular event.Preferably, the scope of the maximum axial distance that nut 5 moves along nut installation cavity can be designed as: 1-2 pitch doubly, can make the functional reliability of valve better.
One preferred embodiment in, the maximum axial distance that nut 5 moves along nut installation cavity can be designed as about pitch scope of a times; This mode of execution is ensureing, on the basis of the reliable closure that realizes needle 9 and valve port 3, to shorten the length of mortor operated valve as far as possible.
Above a kind of mortor operated valve provided by the present invention is described in detail.Applied specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
Claims (12)
1. a mortor operated valve, comprise and be provided with the valve seat (3) of valve port (3a) and be installed on the shell (1) on valve seat (3), nut (5) is installed on described valve seat (3), in described shell (1), be provided with screw mandrel (8) and be fixed on the magnet rotor (2) on described screw mandrel (8), on described screw mandrel (8), be provided with needle (9); Described screw mandrel (8) has the screw section (8a) of matching with the screw section (5a) of described nut (5), and described screw mandrel (8) is arranged on described nut (5) by described screw section (8a); It is characterized in that, described valve seat (3) has the nut installation cavity for described nut (5) is set actively, and the axial distance of described nut installation cavity is greater than the axial length of described nut (5); Described valve seat (3) also has the limit position part that the described nut of restriction (5) circumferentially rotates in described nut installation cavity.
2. mortor operated valve as claimed in claim 1, it is characterized in that, also comprise the elastic member press-fiting between the end face of described nut (5) and the chamber wall of described nut installation cavity, and the restoring force direction of the suffered elastic member of described nut (5) is towards described valve port (3a).
3. mortor operated valve as claimed in claim 2, it is characterized in that, described valve seat (3) comprises main part and is installed on the cylindrical shell (30) on described main part, described cylindrical shell (30) has ladder hole and connects described main part with its large aperture end, and described nut installation cavity is formed between the step surface and described main part of described ladder hole.
4. mortor operated valve as claimed in claim 3, is characterized in that, described main part has guide sleeve (31), and the large aperture end of described cylindrical shell (30) connects described main part by described guide sleeve (31); Described nut installation cavity is formed between the step surface and described guide sleeve (31) of described ladder hole.
5. mortor operated valve as claimed in claim 2, it is characterized in that, described valve seat (3) comprises main part and is installed on the cylindrical shell (30) of described main part, described cylindrical shell (30) has ladder hole and connects described main part with its small aperture end, and the large aperture end of described cylindrical shell (30) is provided with guide sleeve (31); Described nut installation cavity is formed between the step surface and described guide sleeve (31) of described ladder hole.
6. mortor operated valve as claimed in claim 2, it is characterized in that, described valve seat (3) comprises main part and the cylindrical shell (30) that is installed on described main part, and described nut installation cavity is formed between described cylindrical shell (30) and described main part; Described cylindrical shell (30) comprises the upper cylinder (301) and the lower cylinder body (302) that are connected.
7. mortor operated valve as claimed in claim 6, is characterized in that, the guide rail of the chocking construction (7) of this mortor operated valve is fixed on the outside of described upper cylinder (301).
8. the mortor operated valve as described in claim 3 to 7 any one, it is characterized in that, described elastic member is helical spring (6), and described helical spring (6) is connected between the internal chamber wall of described cylindrical shell (30) and the end face of described nut (5).
9. the mortor operated valve as described in claim 1 to 7 any one, it is characterized in that, described limit position part comprises the lug boss of being located on one of the inner circle wall of described nut installation cavity and periphery wall of described nut (5), another one has the depressed part matching with described lug boss, and the width dimensions of described depressed part equates with the width dimensions of described lug boss.
10. the mortor operated valve as described in claim 1 to 7 any one, it is characterized in that, described limit position part comprises the inner circle wall of described nut installation cavity and the periphery wall of described nut (5), the identical and non-circular structure of the cross-sectional profiles of the cross-sectional profiles of the inner circle wall of described nut installation cavity and the periphery wall of described nut (5).
11. mortor operated valves as described in claim 1 to 7 any one, is characterized in that, the scope of the maximum axial distance that described nut (5) moves along described nut installation cavity is: 0.5-3 pitch doubly.
12. mortor operated valves as claimed in claim 11, is characterized in that, the maximum axial distance that described nut (5) moves along described nut installation cavity is 1-2 pitch doubly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310159995.1A CN104132149B (en) | 2013-05-02 | 2013-05-02 | A kind of motor-driven valve |
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| CN201310159995.1A CN104132149B (en) | 2013-05-02 | 2013-05-02 | A kind of motor-driven valve |
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| CN104132149A true CN104132149A (en) | 2014-11-05 |
| CN104132149B CN104132149B (en) | 2017-09-01 |
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| CN201310159995.1A Active CN104132149B (en) | 2013-05-02 | 2013-05-02 | A kind of motor-driven valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019052570A1 (en) * | 2017-09-18 | 2019-03-21 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN109751428A (en) * | 2017-11-07 | 2019-05-14 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN110296265A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN110296266A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| WO2023165305A1 (en) * | 2022-03-04 | 2023-09-07 | 浙江盾安人工环境股份有限公司 | Nut structure and electric valve |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065454A (en) * | 2001-06-12 | 2003-03-05 | Saginomiya Seisakusho Inc | Stopper structure for electric control valve |
| JP2004360762A (en) * | 2003-06-03 | 2004-12-24 | Saginomiya Seisakusho Inc | Motor operated valve |
| CN2846913Y (en) * | 2005-12-08 | 2006-12-13 | 浙江中宝自控元件有限公司 | Electronic expansion valve |
| JP2009162366A (en) * | 2008-01-10 | 2009-07-23 | Fuji Koki Corp | Motor-operated valve and its assembling method |
| CN101629649A (en) * | 2008-07-16 | 2010-01-20 | 株式会社鹭宫制作所 | Electric valve |
| CN201407325Y (en) * | 2009-03-30 | 2010-02-17 | 浙江盾安禾田金属有限公司 | Driving nut and electric valve with same |
| CN101788073A (en) * | 2009-01-22 | 2010-07-28 | 株式会社不二工机 | Mortor operated valve |
| CN102252470A (en) * | 2011-06-02 | 2011-11-23 | 上海俊乐制冷自控元件有限公司 | Straight-way type electronic expansion valve |
| CN102454818A (en) * | 2010-10-15 | 2012-05-16 | 浙江三花股份有限公司 | Electric valve |
| CN102767636A (en) * | 2011-05-04 | 2012-11-07 | 浙江三花股份有限公司 | Electric valve |
| CN103090024A (en) * | 2011-10-27 | 2013-05-08 | 株式会社鹭宫制作所 | Electric valve |
| CN103216663A (en) * | 2013-03-20 | 2013-07-24 | 何永水 | Electric valve |
-
2013
- 2013-05-02 CN CN201310159995.1A patent/CN104132149B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003065454A (en) * | 2001-06-12 | 2003-03-05 | Saginomiya Seisakusho Inc | Stopper structure for electric control valve |
| JP2004360762A (en) * | 2003-06-03 | 2004-12-24 | Saginomiya Seisakusho Inc | Motor operated valve |
| CN2846913Y (en) * | 2005-12-08 | 2006-12-13 | 浙江中宝自控元件有限公司 | Electronic expansion valve |
| JP2009162366A (en) * | 2008-01-10 | 2009-07-23 | Fuji Koki Corp | Motor-operated valve and its assembling method |
| CN101629649A (en) * | 2008-07-16 | 2010-01-20 | 株式会社鹭宫制作所 | Electric valve |
| CN101788073A (en) * | 2009-01-22 | 2010-07-28 | 株式会社不二工机 | Mortor operated valve |
| CN201407325Y (en) * | 2009-03-30 | 2010-02-17 | 浙江盾安禾田金属有限公司 | Driving nut and electric valve with same |
| CN102454818A (en) * | 2010-10-15 | 2012-05-16 | 浙江三花股份有限公司 | Electric valve |
| CN102767636A (en) * | 2011-05-04 | 2012-11-07 | 浙江三花股份有限公司 | Electric valve |
| CN102252470A (en) * | 2011-06-02 | 2011-11-23 | 上海俊乐制冷自控元件有限公司 | Straight-way type electronic expansion valve |
| CN103090024A (en) * | 2011-10-27 | 2013-05-08 | 株式会社鹭宫制作所 | Electric valve |
| CN103216663A (en) * | 2013-03-20 | 2013-07-24 | 何永水 | Electric valve |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019052570A1 (en) * | 2017-09-18 | 2019-03-21 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN109751428A (en) * | 2017-11-07 | 2019-05-14 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN109751428B (en) * | 2017-11-07 | 2022-04-26 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| CN110296265A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN110296266A (en) * | 2018-03-23 | 2019-10-01 | 浙江三花智能控制股份有限公司 | Electric expansion valve |
| CN110296266B (en) * | 2018-03-23 | 2021-08-27 | 浙江三花智能控制股份有限公司 | Electronic expansion valve |
| US11333415B2 (en) | 2018-03-23 | 2022-05-17 | Zhejiang Sanhua Intelligent Controls | Electronic expansion valve |
| WO2023165305A1 (en) * | 2022-03-04 | 2023-09-07 | 浙江盾安人工环境股份有限公司 | Nut structure and electric valve |
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| CN104132149B (en) | 2017-09-01 |
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