CN104514898A - Switching valve and air conditioning unit - Google Patents
Switching valve and air conditioning unit Download PDFInfo
- Publication number
- CN104514898A CN104514898A CN201310465750.1A CN201310465750A CN104514898A CN 104514898 A CN104514898 A CN 104514898A CN 201310465750 A CN201310465750 A CN 201310465750A CN 104514898 A CN104514898 A CN 104514898A
- Authority
- CN
- China
- Prior art keywords
- piston
- switching valve
- valve
- spool
- fixed plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
-
- 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
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention relates to a switching valve and an air conditioning unit. The switching valve comprises a valve body, a valve core, a drive device and a guide piece, wherein the valve body comprises a valve cavity, the valve core is movably arranged in the valve cavity, the drive device is arranged at the first end of the valve body and comprises a piston, the first end of the valve core is connected with the piston, and the valve core moves along the central axial line of the valve body under the limit of the guide piece. The piston comprises two oppositely arranged piston bowls, a fixing plate and elastic support pieces, wherein the fixing plate is firmly connected with the two piston bowls, and the fixing plate is not in contact with the inner wall of the cylinder body of the switching valve drive device; the elastic support piece is arranged in each piston bowl, and the two piston bowls contact and seal with the inner wall of the cylinder body by means of the corresponding elastic support pieces therein. According to the switching valve and air conditioning unit, the valve core of the switching valve is limited to move towards the upside along the central axis of the valve body in a sliding mode by the guide piece, and accordingly the problem of blockage of the piston due to low concentricity is avoided. The valve core and valve seat sealing is preferentially guaranteed.
Description
Technical field
The present invention relates to field of air conditioning, particularly relate to a kind of switching valve and air-conditioner set.
Background technique
The piston of the drive unit of switching valve of the prior art is cylindric, in order to ensure the sealing of valve plate, the centering between the cylinder body that must ensure spool and valve body, piston, drive unit is higher to requirement on machining accuracy, if the concentricity of piston is low, the problem of seizure of piston may be caused.
Summary of the invention
The object of this invention is to provide a kind of switching valve and air-conditioner set, to solve the stuck problem because piston causes because of concentricity deficiency.
For solving the problems of the technologies described above, as first aspect of the present invention, providing a kind of switching valve, comprising: valve body, comprising valve pocket; Spool, is arranged in valve pocket actively; Drive unit, be arranged on the first end of valve body, drive unit comprises piston, and the first end of spool is connected with piston; Guiding element, spool moves along the central axis of valve body by the restriction of guiding element.
Further, piston comprises: two piston cups oppositely arranged; Fixed plate, is fixedly connected with two piston cups, and is in contactless state between the inboard wall of cylinder block of fixed plate and switching valve drive unit; And elastic supporting member for supporting optical member, be provided with an elastic supporting member for supporting optical member in two piston cups, formed to contact with inboard wall of cylinder block under the effect of two piston cups within it corresponding elastic supporting member for supporting optical member respectively and seal.
Further, fixed plate is between two piston cups, and fixed plate and two piston cups are riveted.
Further, fixed plate comprises two outer stationary plates, and the outside of each elastic supporting member for supporting optical member is respectively arranged with an outer stationary plates, and two elastic supporting member for supporting optical member and two piston cups to be clamped between two outer stationary plates and to rivet with these two outer stationary plates.
Further, two piston cups are integrated.
Further, fixed plate comprises and also comprising: internal fixation plate, and internal fixation plate is clamped between two piston cups.
Further, the first end of spool has outside thread, and the first end of spool is through after piston, be fixedly connected with piston with spool by tightening nut.
Further, the end face of the first end of spool is provided with screw, and switching valve also comprises set screw, and set screw is connected with screw through after piston.
Further, guiding element is lining, and lining is arranged on the second end of valve body, and lining be positioned at valve pocket at least partially, lining comprises pilot hole, and the other end of spool is arranged in pilot hole actively.
As first aspect of the present invention, provide a kind of air-conditioner set, comprise switching valve, this switching valve is above-mentioned switching valve.
The central shaft that the spool of the switching valve in the present invention is limited in valve body slidably by guiding element moves upward, and thus avoids the stuck problem that piston causes because of concentricity deficiency.Further, also preferentially ensure that the sealing of spool and valve seat.
Accompanying drawing explanation
Fig. 1 diagrammatically illustrates the structural representation of the switching valve in the present invention;
Fig. 2 diagrammatically illustrates the schematic diagram of the piston in the first embodiment in the present invention;
Fig. 3 diagrammatically illustrates the explosive view of Fig. 2;
Fig. 4 diagrammatically illustrates the schematic diagram of the piston in the second embodiment in the present invention;
Fig. 5 diagrammatically illustrates the schematic diagram of the piston in the 3rd embodiment in the present invention;
Fig. 6 diagrammatically illustrates the schematic diagram of the piston in the 4th embodiment in the present invention;
Fig. 7 diagrammatically illustrates the linkage structure schematic diagram of piston in the present invention in an embodiment and spool;
Fig. 8 diagrammatically illustrates the linkage structure schematic diagram of piston in the present invention in another embodiment and spool.
Reference character in figure: 10, valve body; 20, spool; 21, tightening nut; 22, set screw; 30, drive unit; 31, piston cup; 32, fixed plate; 33, elastic supporting member for supporting optical member; 34, outer stationary plates; 35, internal fixation plate; 36, cylinder body; 37, piston; 38, rivet; 50, lining.
Embodiment
Below embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As a first aspect of the present invention, please refer to Fig. 1, provide a kind of switching valve, comprising: valve body 10, comprises valve pocket; Spool 20, is arranged in valve pocket actively; Drive unit 30, is arranged on the first end of valve body 10, and drive unit 30 comprises piston, and the first end of spool 20 is connected with piston; Guiding element, spool 20 moves along the central axis of valve body 10 by the restriction of guiding element.
The central shaft that the spool of the switching valve in the present invention is limited in valve body slidably by guiding element moves upward, and thus avoids the stuck problem that piston causes because of concentricity deficiency.Further, also preferentially ensure that the sealing of spool and valve seat.
Preferably, please refer to Fig. 2 to Fig. 6, this piston comprises: two piston cups 31 oppositely arranged; Fixed plate 32, is fixedly connected with two piston cups 31, and is in contactless state between the inboard wall of cylinder block of fixed plate 32 and switching valve drive unit; Elastic supporting member for supporting optical member 33, is provided with in two piston cups 31 to be formed to contact with inboard wall of cylinder block under the effect of an elastic supporting member for supporting optical member 33, two piston cups 31 within it corresponding elastic supporting member for supporting optical member 33 respectively and seals.Such as, rivet by rivet 38 between fixed plate 32 and piston cup 31.Preferably, piston cup 31 and fixed plate 32 all offer screw mounting hole, preferably, this screw mounting hole is positioned at the center position of piston cup 31 and fixed plate 32.Preferably, rivet adopts ductility good, and the reliable metal material processing of intensity forms, as aluminium or red copper etc.
Do not contact the inwall of the cylinder body 36 of switching valve drive unit due to fixed plate 32, and piston cup 31 relies on the contact internal walls of the elastic reaction of elastic supporting member for supporting optical member 33 and cylinder body 36 and ensures sealability.Therefore, even if cause piston 37 run-off the straight due to the problem of concentricity, as long as but fixed plate 32 can not with the contact internal walls of cylinder body 36, stuck problem would not be there is.
In first preferred embodiment, please refer to Fig. 2 and Fig. 3, fixed plate 32 is between two piston cups 31, and fixed plate 32 and two piston cups 31 are riveted.Like this; the piston cup 31 of two discrete settings and elastic supporting member for supporting optical member 33 can be coupled together by rivet 38 and fixed plate 32 respectively; in movement process; the part be connected with fixed plate 32 does not deform substantially; thus guarantee that the edge section of piston cup 31 forms the sealing lip for sealing, to realize reliable sealing.
In second preferred embodiment, please refer to Fig. 4, fixed plate 32 comprises two outer stationary plates 34, the outside of each elastic supporting member for supporting optical member 33 is respectively arranged with an outer stationary plates 34, two elastic supporting member for supporting optical member 33 and two piston cups 31 and is clamped between two outer stationary plates 34 and rivets with these two outer stationary plates 34.Wherein, can be discrete between these two piston cups 31, also can be integrated in the 3rd preferred embodiment as shown in Figure 5.In this embodiment; fixed plate 32 also can be two outer stationary plates 34 be arranged on outside elastic supporting member for supporting optical member 33, utilizes this two outer stationary plates 34 and rivet 38, Piston assembling can be got up; and can guarantee that the edge section of piston cup 31 forms the sealing lip for sealing, to realize reliable sealing.Especially, adopt integrated mode, on the one hand, can make installation, manufacture convenient, another is convenient, can make to form a seal space between the sealing lip of two piston cups in left and right, thus improves sealing effect.
On the basis of the embodiment shown in Fig. 4, present invention also offers the 4th preferred embodiment as shown in Figure 6, wherein, fixed plate 32 comprises and also comprising: internal fixation plate 35, and internal fixation plate 35 is clamped between two piston cups 31.
Preferably, the piston cup 31 in the present invention adopts high molecule plastic to make, as polytetrafluoroethylene (PTFE) etc.
Preferably, the fixed plate 32 in the present invention adopts the good metal material processing of intensity to form, such as, carbon steel or stainless steel can be adopted to make.
Preferably, the elastic supporting member for supporting optical member 33 in the present invention adopts the good thin slice stainless steel material of elastic effect to process, such as, SUS304 thin plate can be adopted to make.Preferably, elastic supporting member for supporting optical member 33 comprises bottom and multiple edge part, the whole body edge conjunction of edge part and bottom, and along the direction with bottom angled outwardly.Multiple edge part evenly and arrange with arranging, thus provides elastic acting force for piston cup 31.Under the effect of this elastic acting force, the edge of piston cup 31 is close on the inwall of cylinder body 36, thus forms sealing.
Fig. 7 shows a kind of linkage structure of piston and spool.As shown in Figure 7, the first end of spool 20 has outside thread, and the first end of spool 20 is through after piston, be fixedly connected with piston with spool 20 by tightening nut 21.During installation, only need the first end each parts of piston being located in successively spool 20, and then tightening nut 21 is installed on the outside thread of spool 20, fixing between piston and spool can be realized.
Fig. 8 shows the another kind of linkage structure of piston and spool.As shown in Figure 8, the end face of the first end of spool 20 is provided with screw, switching valve also comprises set screw 22, and set screw 22 is connected with screw through after piston.In this embodiment, each parts of piston do not need to be riveted together.
Preferably, this guiding element is lining 50, second end being arranged on valve body 10 of lining 50, and lining 50 be positioned at valve pocket at least partially, lining 50 comprises pilot hole, and the other end of spool 20 is arranged in pilot hole actively; Piston is above-mentioned piston.
When piston 37 drives spool 20 along the axial motion of valve body 10, the right-hand member of spool 20 is positioned at the pilot hole of lining 50 all the time, therefore, proposes high requirement to concentricity during piston movement.When the precision of concentricity is not high enough, because pilot hole has the darker degree of depth, therefore, the problem that spool 20 is stuck may be there is.
For this reason, the present invention makes to form elastic sealing structure between the inwall of the cylinder body 36 of piston 37 and drive unit 30, therefore, avoid the problem due to concentricity, the phenomenon causing spool 20 to be stuck, improve the reliability of system, also reduce processing cost simultaneously, there is the simple feature of structure.
As a second aspect of the present invention, provide a kind of air-conditioner set, comprise switching valve, this switching valve is above-mentioned switching valve.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a switching valve, comprising:
Valve body (10), comprises valve pocket;
Spool (20), is arranged in described valve pocket actively;
Drive unit (30), is arranged on the first end of described valve body (10), and described drive unit (30) comprises piston, and the first end of described spool (20) is connected with described piston;
Guiding element, described spool (20) moves along the central axis of described valve body (10) by the restriction of described guiding element,
Wherein, described piston comprises:
Two piston cups (31) oppositely arranged;
Fixed plate (32), is fixedly connected with described two piston cups (31), and is in contactless state between the inboard wall of cylinder block of described fixed plate (32) and described switching valve drive unit; With
Elastic supporting member for supporting optical member (33), be provided with a described elastic supporting member for supporting optical member (33) in described two piston cups (31), formed to contact with described inboard wall of cylinder block under the effect of described two piston cups (31) within it corresponding described elastic supporting member for supporting optical member (33) respectively and seal.
2. switching valve according to claim 1, is characterized in that, described fixed plate (32) is positioned between described two piston cups (31), and described fixed plate (32) and described two piston cups (31) are riveted.
3. switching valve according to claim 1, it is characterized in that, described fixed plate (32) comprises two outer stationary plates (34), the outside of each described elastic supporting member for supporting optical member (33) is respectively arranged with a described outer stationary plates (34), and described two elastic supporting member for supporting optical member (33) and described two piston cups (31) to be clamped between described two outer stationary plates (34) and to rivet with two outer stationary plates (34) described in this.
4. switching valve according to claim 3, is characterized in that, described two piston cups (31) are integrated.
5. switching valve according to claim 3, is characterized in that, described fixed plate (32) comprises and also comprising: internal fixation plate (35), and described internal fixation plate (35) is clamped between described two piston cups (31).
6. switching valve according to claim 1, it is characterized in that, the first end of described spool (20) has outside thread, and the first end of described spool (20) is through after described piston, be fixedly connected with described piston with described spool (20) by tightening nut (21).
7. switching valve according to claim 1, is characterized in that, the end face of the first end of described spool (20) is provided with screw, and described switching valve also comprises set screw (22), and described set screw (22) is connected with described screw through after described piston.
8. switching valve according to claim 1, it is characterized in that, described guiding element is lining (50), described lining (50) is arranged on the second end of described valve body (10), and described lining (50) be positioned at described valve pocket at least partially, described lining (50) comprises pilot hole, and the other end of described spool (20) is arranged in described pilot hole actively.
9. an air-conditioner set, comprises switching valve, it is characterized in that, described switching valve is the switching valve according to any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310465750.1A CN104514898A (en) | 2013-10-04 | 2013-10-04 | Switching valve and air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310465750.1A CN104514898A (en) | 2013-10-04 | 2013-10-04 | Switching valve and air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104514898A true CN104514898A (en) | 2015-04-15 |
Family
ID=52790612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310465750.1A Pending CN104514898A (en) | 2013-10-04 | 2013-10-04 | Switching valve and air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104514898A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545673A (en) * | 2015-12-07 | 2017-03-29 | 巩高铄 | A kind of guiding valve |
| CN107023693A (en) * | 2016-01-29 | 2017-08-08 | 株式会社不二工机 | Flow channel switching valve |
| CN110274054A (en) * | 2019-07-19 | 2019-09-24 | 西安交通大学 | A kind of switching valve that can switch between four-way and threeway |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1130357A (en) * | 1997-07-11 | 1999-02-02 | Daikin Ind Ltd | Four-way valve |
| JP4077705B2 (en) * | 2002-10-01 | 2008-04-23 | 株式会社鷺宮製作所 | Manufacturing method of valve body for four-way switching valve |
| CN201152375Y (en) * | 2007-12-29 | 2008-11-19 | 浙江三花制冷集团有限公司 | Four-way change valve piston member |
| CN101994851A (en) * | 2009-08-13 | 2011-03-30 | 浙江三花制冷集团有限公司 | Piston part and four-way reversing valve |
| CN102588627A (en) * | 2011-01-06 | 2012-07-18 | 浙江三花制冷集团有限公司 | Air-conditioning reversing valve and air-conditioning system |
| CN102734493A (en) * | 2011-04-02 | 2012-10-17 | 浙江三花制冷集团有限公司 | Four-way reversion valve and piston component thereof |
| CN103245141A (en) * | 2013-05-28 | 2013-08-14 | 浙江三花股份有限公司 | Thermal expansion valve and assembling method |
| CN103291957A (en) * | 2012-02-24 | 2013-09-11 | 浙江三花制冷集团有限公司 | Main valve of four-way reversing valve and four-way reversing valve provided with main valve |
-
2013
- 2013-10-04 CN CN201310465750.1A patent/CN104514898A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1130357A (en) * | 1997-07-11 | 1999-02-02 | Daikin Ind Ltd | Four-way valve |
| JP4077705B2 (en) * | 2002-10-01 | 2008-04-23 | 株式会社鷺宮製作所 | Manufacturing method of valve body for four-way switching valve |
| CN201152375Y (en) * | 2007-12-29 | 2008-11-19 | 浙江三花制冷集团有限公司 | Four-way change valve piston member |
| CN101994851A (en) * | 2009-08-13 | 2011-03-30 | 浙江三花制冷集团有限公司 | Piston part and four-way reversing valve |
| CN102588627A (en) * | 2011-01-06 | 2012-07-18 | 浙江三花制冷集团有限公司 | Air-conditioning reversing valve and air-conditioning system |
| CN102734493A (en) * | 2011-04-02 | 2012-10-17 | 浙江三花制冷集团有限公司 | Four-way reversion valve and piston component thereof |
| CN103291957A (en) * | 2012-02-24 | 2013-09-11 | 浙江三花制冷集团有限公司 | Main valve of four-way reversing valve and four-way reversing valve provided with main valve |
| CN103245141A (en) * | 2013-05-28 | 2013-08-14 | 浙江三花股份有限公司 | Thermal expansion valve and assembling method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106545673A (en) * | 2015-12-07 | 2017-03-29 | 巩高铄 | A kind of guiding valve |
| CN107023693A (en) * | 2016-01-29 | 2017-08-08 | 株式会社不二工机 | Flow channel switching valve |
| CN107023693B (en) * | 2016-01-29 | 2020-03-10 | 株式会社不二工机 | Flow path switching valve |
| CN110274054A (en) * | 2019-07-19 | 2019-09-24 | 西安交通大学 | A kind of switching valve that can switch between four-way and threeway |
| CN110274054B (en) * | 2019-07-19 | 2024-03-26 | 西安交通大学 | Switching valve capable of switching between four-way and three-way |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11131397B2 (en) | Electric ball valve and manufacturing method therefor | |
| US10267434B2 (en) | Motor-operated valve | |
| US20230417339A1 (en) | Valve core assembly | |
| CN104514898A (en) | Switching valve and air conditioning unit | |
| JP5987834B2 (en) | Motorized valve | |
| WO2015107760A1 (en) | Sealing device | |
| CN109505981B (en) | Rotary table sealing structure | |
| CN106211788B (en) | Fluid pressure cylinder | |
| EP3293470A1 (en) | Electric valve | |
| CN216742869U (en) | Electronic expansion valve | |
| JP6228621B2 (en) | Motorized valve | |
| KR102257340B1 (en) | Rod assembly and fluid pressure device | |
| CN105422770A (en) | Accurate limiting device for lead screw pair | |
| CN105626876A (en) | Electronic expansion valve | |
| CN107591963B (en) | High-precision installation device and method for frameless motor | |
| CN105716335A (en) | Electronic expansion valve | |
| US11313485B2 (en) | Electric valve and manufacturing method thereof | |
| US20080134807A1 (en) | Motorized pipette | |
| CN106195178B (en) | Drive box device and air conditioner wall-mounted machine | |
| EP3308035B1 (en) | Fluid pressure cylinder | |
| JP2014052078A (en) | Motor operated valve | |
| CN207526890U (en) | A kind of high-precision bearing mechanism | |
| CN102635570B (en) | Integral mechanical sealing device for pump | |
| KR20170085534A (en) | Sealing/guiding unit | |
| CN107218247B (en) | Bearing close-fitting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150415 |