CN208153754U - A kind of high cooperation precision electric valve - Google Patents
A kind of high cooperation precision electric valve Download PDFInfo
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- CN208153754U CN208153754U CN201820710626.5U CN201820710626U CN208153754U CN 208153754 U CN208153754 U CN 208153754U CN 201820710626 U CN201820710626 U CN 201820710626U CN 208153754 U CN208153754 U CN 208153754U
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Abstract
A kind of high cooperation precision electric valve, externally threaded item is by being threadedly engaged in the internal thread hole for being threaded onto interior threaded part, internal thread hole is pierced by the top of externally threaded item, externally threaded item is provided with spool pilot hole, spool is threaded onto spool pilot hole, externally threaded item is divided into two sections, including external thread section and rotor linkage section, rotor linkage section be in hollow cavity and bottom opening it is semicylinder shape, the top of the hollow cavity of rotor linkage section is fixed at the top of external thread section, lower stop mechanism is set in the hollow cavity of rotor linkage section, the external screw thread of external thread section, rotor linkage section and lower stop mechanism pass through injection mold integrated injection molding；External screw thread seat is symmetrical set with rotor linkage section, rotor linkage section and external screw thread seat cooperatively form cylindrical body, cylinder engagement is threaded onto the central through hole of rotor, the internal chamber wall of the hollow cavity of external screw thread seat is equipped with upper stop mechanism, and external screw thread seat and upper stop mechanism pass through injection mold integrated injection molding.
Description
Technical field
The utility model belongs to motor-driven valve technical field, especially related with a kind of high cooperation precision electric valve.
Background technique
Patent publication No. discloses a kind of for adjusting the motor-driven valve of fluid flow, valve seat and adapter tube for CN202992195U
Welding forms valve component, externally threaded item and valve component integrated injection molding.Interior threaded part（With rotor integration knot
Structure）It is split into two halves from center, injection molding forms two half-threads respectively, is then combined with to form a whole internal screw thread, threaded component
Spring accommodating chamber and needle installation and positioning structure are yet formed after merging.Although the technology reduces the components of motor-driven valve, but
It is that interior threaded part is divided into two parts, merges posterior restoration screw thread and certainly exist size and position precision difference, reduce interior spiral shell
There is the increase of threads turn resistance so as to cause the engaging portion of internal screw thread in the precision of line.Same needle accommodating chamber is also
It is made of two halves, also will increase spool and relatively rotate inflexible problem.Rotor simultaneously（Interior threaded part）Deflection and vibration are only
By original precision, just not high screw thread guarantees, therefore rotor is easy to glance off.In addition the stop up and down of existing motor-driven valve
The part that mechanism is involved is more, and the installation positioning number of dimension chain is more, so as to cause the reduction of its precision, influences spool
The adjusting of fluid flow.
Utility model content
Precision existing for split type structure for existing motor-driven valve interior threaded part it is not high and cause spool be easy deflection,
The problems such as vibration, the utility model are intended to provide a kind of high cooperation precision electric valve.
For this purpose, the utility model uses following technical scheme：A kind of high cooperation precision electric valve, including valve body outer cover, valve
Seat, interior threaded part, externally threaded item, rotor and spool, the externally threaded item are threaded onto internal screw thread by being threadedly engaged
In the internal thread hole of component, internal thread hole is pierced by the top of externally threaded item, the externally threaded item is provided with spool guiding
Hole, spool are threaded onto spool pilot hole, and the externally threaded item is divided into two sections, including external thread section and rotor linkage section,
The rotor linkage section be in hollow cavity and bottom opening it is semicylinder shape, be fixed at the top of external thread section described
Rotor linkage section hollow cavity top, lower stop mechanism, the outer spiral shell are set in the hollow cavity of rotor linkage section
External screw thread, rotor linkage section and the lower stop mechanism of line section pass through injection mold integrated injection molding；
The motor-driven valve further includes external screw thread seat, and the external screw thread seat is in symmetrically to set with the rotor linkage section
It sets, rotor linkage section and external screw thread seat cooperatively form cylindrical body, and cylinder engagement is threaded onto the central through hole of rotor, described
The internal chamber wall of the hollow cavity of external screw thread seat is equipped with upper stop mechanism, and external screw thread seat and upper stop mechanism pass through injection mold one
Body injection molding.
As supplement to above-mentioned technical proposal and perfect, the utility model further includes following technical characteristic.
The peripheral part of the external thread section of the externally threaded item sequentially forms guide section and thread segment from top to bottom, guiding
The outer diameter of section is greater than the outer diameter of thread segment.
The lower stop mechanism be set to the hollow cavity of the rotor linkage section top it is downwardly convex, to
Lower convexity extends internally to be connected with the guide section of externally threaded item, the internal chamber wall to extend outwardly with the hollow cavity of rotor linkage section
It is connected；The upper stop mechanism is the radial protrusion for being set to the internal chamber wall of hollow cavity of external screw thread seat, radial protrusion
Surface forms arcwall face.
Static upper stop mechanism and static lower stop mechanism are provided on the interior threaded part.Described static time is only
Motivation structure and static upper chocking construction and interior threaded part are by injection mold integrated injection molding, and passing through the injection mold will
Interior threaded part injection molding is fixed on the valve seat.
The static lower stop mechanism is to be set to the top surface of the interior threaded part to raise upward, and described is quiet
Only upper stop mechanism is the lateral protrusions for being set to the top periphery face of the interior threaded part, static lower stop mechanism with it is quiet
Only the line of two positions of upper stop mechanism passes through the center line of interior threaded part.
The spool pilot hole is set in the external thread section, and the top of external thread section is equipped with the first positioning region,
First positioning region is in semicylinder shape, the bottom of half of center hole and the spool pilot hole with half of center hole
Connection, the diameter of half of center hole are greater than the diameter of the spool pilot hole；
It is provided with second positioning region symmetrical with first positioning region at the top of the external screw thread seat, first
Half of center hole of positioning region and the second positioning region forms complete center hole, and spring is arranged in center hole, described
Spool upper end has ring-shaped step shoulder, and the bottom of ring-shaped step shoulder is resisted against between center hole and spool pilot hole and is formed
Step surface on, the bottom of the spring is resisted against the top of the ring-shaped step shoulder, second positioning region
Top is provided with spring shoulder, is resisted against in the spring shoulder of the second positioning region at the top of spring, will leave or complete in spool
After the valve port lifted off a seat entirely, ring-shaped step shoulder is connected on step surface, to realize positioning.Pass through shoulder and ring-shaped step
Spring is compressed in shoulder cooperation, and spring is made to generate pressure to spool.
The bottom of half of center hole of the second positioning region of the external screw thread seat is equipped with and the external thread section
The shoulder of top peripheral portion cooperation, to ensure that radial positioning requirement between externally threaded item and external screw thread seat.
Half of center hole of the second positioning region of the external screw thread seat cooperated with first positioning region is matched
Conjunction face is equipped with multiple positioning protrusion, and first positioning region is equipped with the positioning groove cooperated with positioning protrusion, convex
It rises in insertion positioning groove, to prevent from relatively rotating between external screw thread seat and externally threaded item.
The rotor linkage section and the first positioning region and external screw thread seat and the second positioning region are respectively formed up-small and down-big
Semicolumn Step Shaft, the stepped hole of the rotor setting and the cooperation of semicolumn Step Shaft, rotor linkage section and external screw thread seat are matched
It closes and is set to the lower hole of stepped hole, the lower section of the lower section of the first positioning region and the second positioning region is equipped in platform
The lower section of the upper hole in rank hole, the lower section of the first positioning region and the second positioning region is respectively equipped with the arc positioning of evagination
Protrusion is provided with the arc positioning groove with the cooperation of arc positioning protrusion on the hole wall of the upper hole of the stepped hole.
The middle section outer peripheral surface of first positioning region and the second positioning region is equipped with circlip holding tank, and circlip inlay card is in first
In the circlip holding tank of positioning region and the second positioning region, the axial direction of externally threaded item and external screw thread seat is determined to further increase
Position and radial positioning.The bottom of the valve body outer cover is by being fixedly welded on the valve seat.In the spring shoulder
Balance through-hole equipped with perforation center hole, balance through-hole are connected to the valve port of central through hole, spool pilot hole and valve seat, from
And externally threaded item, external screw thread seat, spool three composition cavity inside and outside air pressure balance problem is completely eliminated.
The utility model can achieve following beneficial effect：1, the externally threaded item of the utility model passes through integrated through injection molding shape
At semicolumn positioning region, it also is provided with semicolumn positioning region on threaded block, full circle column is constituted after cooperation, and by circlip realization and outside
Screwed part and rotor axial and radial positioning guarantee to hold compared with existing assembly method by the cooperation of semicolumn positioning region
Easily outer, externally threaded item ensure that external screw thread and guide section are complete, and the internal screw thread for reducing interior threaded part rubs with externally threaded
Resistance is wiped, and improves and screws togather precision and guiding accuracy.2, the utility model goes up stop mechanism by being arranged on outer threaded block,
Lower stop mechanism is set in externally threaded item, and, to reduce the part of configuration stop mechanism, is subtracted by injection molding
Lack the process of stop mechanism installation, and reduces processing cost.In addition the external screw thread seat and externally threaded item of the utility model
With preferable positioning precision, upper stop mechanism and static upper stop mechanism, lower stop mechanism and static lower stop mechanism
Cooperation relatively easily guarantee.In addition the part that stop mechanism axial position involves up and down is seldom, only spool, external thread part
The installation positioning number of 4 part, external screw thread seat, interior threaded part parts, dimension chain is fewer, and position precision is also higher, therefore
Upper and lower stop mechanism axial position is high, and Assurance of Size ability is strong.3, the utility model is realizing external screw thread and internal thread structure letter
Under conditions of change and assembly simplify, external screw thread and guide section are arranged by the peripheral part in externally threaded item, is beneficial to prevent and turns
Son deflection, improves the reliability of product.3, the spool of the utility model is threaded onto the spool pilot hole of externally threaded item, by
In the face that spool is contacted with externally threaded item be complete face（Without in conjunction with gap）, therefore the resistance of needle and externally threaded item rotation
Power is small.The cooperation for passing through semicolumn positioning region simultaneously, facilitates the installation of spool and spring.4, interior threaded part and externally threaded item
It is all made of injection molding, since the plastics with self-lubricating both can be selected, so internal screw thread and external screw thread frictional resistance
Small, wearability is good.In addition internal screw thread and valve seat integrated injection molding simplify the process that interior threaded part and valve seat are fixed, mention
High internal screw thread fixed precision, and internal screw thread has complete, integrated tooth form, accuracy of thread is higher.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the stereo directional structural schematic diagram of the externally threaded item of the utility model.
Fig. 3 is the stereo directional partial cross-sectional structural diagram of the external screw thread seat of the utility model.
Fig. 4 is the externally threaded item of the utility model and the assembly decomposition state schematic diagram of external screw thread seat.
Fig. 5 is the interior threaded part structural schematic diagram of the utility model.
Fig. 6 is the schematic perspective view of the rotor of the utility model.
Fig. 7 is the valve core structure schematic diagram of the utility model.
Specific embodiment
Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing.
As shown in Fig. 1-Fig. 7, the utility model include valve body outer cover 1, valve seat 5, interior threaded part 2, externally threaded item 3,
Rotor 6, spool 4 and external screw thread seat 8, externally threaded item 3, which passes through, to be threadedly engaged in the internal thread hole for being threaded onto interior threaded part 2,
The top of externally threaded item 3 is pierced by internal thread hole, and externally threaded item 3 is provided with spool pilot hole, and spool 4 is threaded onto spool guiding
Kong Zhong, externally threaded item 3 are divided into two sections, including external thread section 31 and rotor linkage section 32, and rotor linkage section 32 is in hollow
Inner cavity and bottom opening it is semicylinder shape, the top of the hollow cavity of rotor linkage section 32 is fixed at the top of external thread section 31
Lower stop mechanism 35, external screw thread, 32 and of rotor linkage section of external thread section 31 are arranged in the hollow cavity of rotor linkage section 32 for portion
Lower stop mechanism 35 passes through injection mold integrated injection molding；External screw thread seat 8 is symmetrical set with rotor linkage section 32, and rotor connects
It connects section 32 and external screw thread seat 8 cooperatively forms cylindrical body, cylinder engagement is threaded onto the central through hole of rotor 6, external screw thread seat 8
The internal chamber wall of hollow cavity is equipped with upper stop mechanism 10, external screw thread seat 8 and upper stop mechanism 10 and is integrally infused by injection mold
It is moulded into type.
Further, the peripheral part of the external thread section 31 of externally threaded item 3 sequentially forms guide section and screw thread from top to bottom
Section, the outer diameter of guide section are greater than the outer diameter of thread segment.Lower stop mechanism 35 is the hollow cavity for being set to rotor linkage section 32
Top it is downwardly convex, downwardly convex extend internally is connected with the guide section of externally threaded item 3, extends outwardly and rotor linkage section
The internal chamber wall of 32 hollow cavity is connected；Upper stop mechanism 10 is the diameter for being set to the internal chamber wall of hollow cavity of external screw thread seat 8
To protrusion, the surface of radial protrusion forms arcwall face.It is provided with static upper chocking construction 22 on interior threaded part 2 and static time is stopped
Motivation structure 21；Static lower stop mechanism 21 passes through injection mold integrated injection molding with interior threaded part 2 with static upper chocking construction 22
Molding, and the injection molding of interior threaded part 2 is fixed on valve seat 5 by the injection mold.Static lower stop mechanism 21 is to be set to
The top surface of interior threaded part 2 raises upward, and static upper chocking construction 22 is the top periphery face for being set to interior threaded part 2
Lateral protrusions, static lower stop mechanism 21 and the line of two positions of static upper chocking construction 22 pass through interior threaded part 2
Center line.
Further, spool pilot hole is set in external thread section 31, and the top of external thread section 31 is equipped with the first positioning region
33, the first positioning region 33 is in semicylinder shape, the bottom of half of center hole and spool pilot hole with half of center hole
Connection, the diameter of half of center hole are greater than the diameter of spool pilot hole；The top of external screw thread seat 8 is provided with and the first positioning region
Half of center hole of 33 the second symmetrical positioning regions 9, the first positioning region 33 and the second positioning region 9 forms complete center
Circular hole, center hole is interior to be arranged spring 7, and the upper end of spool 4 has ring-shaped step shoulder 41, and the bottom of ring-shaped step shoulder 41 is supported
It is against on the step surface formed between center hole and spool pilot hole, the bottom of spring 7 is resisted against ring-shaped step shoulder 41
Top, the top of the second positioning region 9 are provided with spring shoulder 91, and the top of spring 7 is resisted against the spring shoulder of the second positioning region 9
On 91, after the valve port that spool will leave or lift off a seat completely, ring-shaped step shoulder is connected on step surface, to realize
Positioning.Spring is compressed by shoulder and the cooperation of ring-shaped step shoulder, spring is made to generate pressure to spool.
Further, the bottom of half of center hole of the second positioning region 9 of external screw thread seat 8 is equipped with and external thread section 31
The shoulder of top peripheral portion cooperation, to ensure that radial positioning requirement between externally threaded item and external screw thread seat.
Half of center hole of the second positioning region 9 of the external screw thread seat 8 further cooperated with the first positioning region 33 is matched
Conjunction face is equipped with multiple positioning protrusion 92, and the first positioning region 33 is equipped with the positioning groove 34 cooperated with positioning protrusion 92, positioning
Protrusion 92 is inserted into positioning groove 34, to prevent from relatively rotating between external screw thread seat and externally threaded item.
Further rotor linkage section 32 and the first positioning region 33 and external screw thread seat 8 and the second positioning region 9 are respectively formed
Small lower big semicolumn Step Shaft, the stepped hole of the setting of rotor 6 and the cooperation of semicolumn Step Shaft, rotor linkage section 32 and external screw thread
Seat 8 is equipped with the lower hole in stepped hole, the lower section cooperation of the lower section of the first positioning region 33 and the second positioning region 9
It is set to the upper hole of stepped hole, the lower section of the lower section of the first positioning region 33 and the second positioning region 9 is respectively equipped with outer
Convex arc positioning protrusion 11, the arc positioning being provided on the hole wall of the upper hole of stepped hole with the cooperation of arc positioning protrusion are recessed
Slot 61.
Further the middle section outer peripheral surface of the first positioning region 33 and the second positioning region 9 is equipped with circlip holding tank, circlip inlay card
In the circlip holding tank of the first positioning region 33 and the second positioning region 9, to further increase to externally threaded item and external screw thread
The axially position and radial positioning of seat；The bottom of valve body outer cover 1 is by being fixedly welded on valve seat 5；Spring shoulder 91 is equipped with
The balance through-hole of center hole is penetrated through, balance through-hole is connected to the valve port of central through hole, spool pilot hole and valve seat 5, thus
Externally threaded item, external screw thread seat, spool three composition cavity inside and outside air pressure balance problem is completely eliminated.
Claims (10)
1. a kind of high cooperation precision electric valve, including valve body outer cover（1）, valve seat（5）, interior threaded part（2）, externally threaded item
（3）, rotor（6）And spool（4）, it is characterised in that：The externally threaded item（3）Internal thread part is threaded by being threadedly engaged
Part（2）Internal thread hole in, externally threaded item（3）Top be pierced by internal thread hole, the externally threaded item（3）It is provided with valve
Core pilot hole, spool（4）It is threaded onto spool pilot hole, the externally threaded item（3）It is divided into two sections, including external thread section
（31）With rotor linkage section（32）, the rotor linkage section（32）In the semicylinder with hollow cavity and bottom opening
Shape, external thread section（31）Top be fixed on the rotor linkage section（32）Hollow cavity top, rotor linkage section
（32）Hollow cavity in lower stop mechanism is set（35）, the external thread section（31）External screw thread, rotor linkage section（32）
With lower stop mechanism（35）Pass through injection mold integrated injection molding；
The motor-driven valve further includes external screw thread seat（8）, the external screw thread seat（8）With the rotor linkage section（32）In pair
Claim setting, rotor linkage section（32）With external screw thread seat（8）Cylindrical body is cooperatively formed, cylinder engagement is threaded onto rotor（6）In
In heart through-hole, the external screw thread seat（8）Hollow cavity internal chamber wall be equipped with upper stop mechanism（10）, external screw thread seat（8）
With upper stop mechanism（10）Pass through injection mold integrated injection molding.
2. a kind of high cooperation precision electric valve according to claim 1, it is characterised in that：The externally threaded item（3）
External thread section（31）Peripheral part sequentially form guide section and thread segment from top to bottom, the outer diameter of guide section is greater than thread segment
Outer diameter.
3. a kind of high cooperation precision electric valve according to claim 2, it is characterised in that：The lower stop mechanism（35）
To be set to the rotor linkage section（32）Hollow cavity top it is downwardly convex, it is downwardly convex to extend internally and outer spiral shell
Line component（3）Guide section be connected, extend outwardly and rotor linkage section（32）Hollow cavity internal chamber wall be connected；Described is upper
Stop mechanism（10）To be set to external screw thread seat（8）Hollow cavity internal chamber wall radial protrusion, the surface shape of radial protrusion
Camber face.
4. a kind of high cooperation precision electric valve according to claim 3, it is characterised in that：The interior threaded part（2）
On be provided with static upper chocking construction（22）With static lower stop mechanism（21）；The static lower stop mechanism（21）With it is static
Upper chocking construction（22）With interior threaded part（2）By injection mold integrated injection molding, and pass through the injection mold for interior spiral shell
Line component（2）The valve seat is fixed in injection molding（5）On.
5. a kind of high cooperation precision electric valve according to claim 4, it is characterised in that：The static lower stop mechanism
（21）To be set to the interior threaded part（2）Top surface raise upward, the static upper chocking construction（22）To set
It is placed in the interior threaded part（2）Top periphery face lateral protrusions, static lower stop mechanism（21）With static upper stop
Structure（22）Two positions line pass through interior threaded part（2）Center line.
6. a kind of high cooperation precision electric valve according to claim 5, it is characterised in that：The spool pilot hole setting
In the external thread section（31）In, external thread section（31）Top be equipped with the first positioning region（33）, the first positioning region（33）It is in
Semicylinder shape with half center hole, the bottom of half of center hole is connected to the spool pilot hole, in half
The diameter of heart circular hole is greater than the diameter of the spool pilot hole；
The external screw thread seat（8）Top be provided with and first positioning region（33）The second symmetrical positioning region
（9）, the first positioning region（33）With the second positioning region（9）Half of center hole form complete center hole, in center hole
Spring is set（7）, the spool（4）Upper end have ring-shaped step shoulder（41）, ring-shaped step shoulder（41）Bottom support
It is against on the step surface formed between center hole and spool pilot hole, the spring（7）Bottom be resisted against the ring
Shape step shoulder（41）Top, second positioning region（9）Top be provided with spring shoulder（91）, spring（7）Top
Portion is resisted against the second positioning region（9）Spring shoulder（91）On.
7. a kind of high cooperation precision electric valve according to claim 6, it is characterised in that：The external screw thread seat（8）'s
Second positioning region（9）Half of center hole bottom be equipped with and the external thread section（31）Top peripheral portion cooperation lean on
Shoulder.
8. a kind of high cooperation precision electric valve according to claim 7, it is characterised in that：With first positioning region
（33）The external screw thread seat of cooperation（8）The second positioning region（9）Half of center hole mating surface be equipped with it is multiple fixed
Position protrusion（92）, first positioning region（33）It is equipped with and positioning protrusion（92）The positioning groove of cooperation（34）, convex
It rises（92）It is inserted into positioning groove（34）It is interior.
9. a kind of high cooperation precision electric valve according to claim 8, it is characterised in that：The rotor linkage section（32）
With the first positioning region（33）And external screw thread seat（8）With the second positioning region（9）It is respectively formed up-small and down-big semicolumn Step Shaft, institute
The rotor stated（6）Stepped hole with the cooperation of semicolumn Step Shaft, rotor linkage section are set（32）With external screw thread seat（8）It is equipped with
In the lower hole of stepped hole, the first positioning region（33）The lower section and the second positioning region（9）The lower section be equipped in
The upper hole of stepped hole, the first positioning region（33）The lower section and the second positioning region（9）The lower section be respectively equipped with evagination
Arc positioning protrusion（11）, the arc with the cooperation of arc positioning protrusion is provided on the hole wall of the upper hole of the stepped hole
Positioning groove（61）.
10. a kind of high cooperation precision electric valve according to claim 9, it is characterised in that：First positioning region
（33）With the second positioning region（9）Middle section outer peripheral surface be equipped with circlip holding tank, circlip inlay card is in the first positioning region（33）With second
Positioning region（9）Circlip holding tank in；The valve body outer cover（1）Bottom by being fixedly welded on the valve seat（5）On；
The spring shoulder（91）It is equipped with the balance through-hole of perforation center hole, balance through-hole and central through hole, spool pilot hole
And valve seat（5）Valve port connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820710626.5U CN208153754U (en) | 2018-05-14 | 2018-05-14 | A kind of high cooperation precision electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820710626.5U CN208153754U (en) | 2018-05-14 | 2018-05-14 | A kind of high cooperation precision electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208153754U true CN208153754U (en) | 2018-11-27 |
Family
ID=64390439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820710626.5U Active CN208153754U (en) | 2018-05-14 | 2018-05-14 | A kind of high cooperation precision electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208153754U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397558A (en) * | 2018-05-14 | 2018-08-14 | 浙江中宝自控元件有限公司 | A kind of high cooperation precision electric valve |
| JP2021050822A (en) * | 2019-09-25 | 2021-04-01 | 江西鴎迪銅業有限公司Ｊｉａｎｇｘｉ Ａｕｄｙ Ｂｒａｓｓｗｏｒｋ Ｉｎｃ． | Valve core for electronic expansion valve |
-
2018
- 2018-05-14 CN CN201820710626.5U patent/CN208153754U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397558A (en) * | 2018-05-14 | 2018-08-14 | 浙江中宝自控元件有限公司 | A kind of high cooperation precision electric valve |
| CN108397558B (en) * | 2018-05-14 | 2024-06-07 | 浙江中宝自控元件有限公司 | High-fit-precision electric valve |
| JP2021050822A (en) * | 2019-09-25 | 2021-04-01 | 江西鴎迪銅業有限公司Ｊｉａｎｇｘｉ Ａｕｄｙ Ｂｒａｓｓｗｏｒｋ Ｉｎｃ． | Valve core for electronic expansion valve |
| JP6991291B2 (en) | 2019-09-25 | 2022-01-12 | 江西鴎迪銅業有限公司 | Valve core for electronic expansion valve |
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