CN110388496A - Ball valve - Google Patents
Ball valve Download PDFInfo
- Publication number
- CN110388496A CN110388496A CN201810353365.0A CN201810353365A CN110388496A CN 110388496 A CN110388496 A CN 110388496A CN 201810353365 A CN201810353365 A CN 201810353365A CN 110388496 A CN110388496 A CN 110388496A
- Authority
- CN
- China
- Prior art keywords
- duct
- spool
- gear
- valve
- valve body
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
-
- 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
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/535—Mechanical actuating means with toothed gearing for rotating 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
Abstract
The present invention discloses a kind of ball valve, including driving mechanism, transmission mechanism, valve component and spool, the driving mechanism includes electric machine assembly, casing and attachment base, the electric machine assembly includes motor shaft, the transmission mechanism includes planetary wheeling assembly and valve rod, the motor shaft and the planetary wheeling assembly are sequentially connected, one end of the valve rod is fixedly connected with the planetary wheeling assembly, the other end of the valve rod and the spool are sequentially connected, the valve component includes main valve body and gear-box, the gear-box is formed with the second chamber, one end of the gear-box is fixedly connected with the attachment base, sealed set between the gear-box and the attachment base, the other end of the gear-box and the main valve body are fixed and junction seals, a part of the valve rod is located at the gear-box, a part is located at the main valve body；The ball valve opposite can reduce volume, and can valve rod be not exposed to outside ball valve in use, can be adapted for high sealing performance requirement.
Description
[technical field]
The present invention relates to fluid control technology fields, and in particular to a kind of ball valve.
[background technique]
Ball valve is mainly used to do the cutting of fluid in pipeline, and current ball valve is generally divided into driving mechanism, transmission mechanism
With body portion etc., driving mechanism, with the Spool rotating in moving valve, reaches switching fluid flow direction by valve rod rotation
Function.It wherein is provided with gear reduction in transmission mechanism, the output for amplifying motor by the gear set of multistage external toothing is turned round
Square.But multistage external gear pump group is big with respect to occupied space.In addition, transmission mechanism is connected with spool by valve rod, driver
Structure is located at outside valve body, is stretched out outside valve body due to a part of valve rod and is connect again with transmission mechanism, generally by being arranged on valve rod
Rubber o-ring is sealed, and is leaked outside in order to prevent, for the more demanding of O-ring.
[summary of the invention]
The present invention is to solve the deficiency of above-mentioned ball valve, provides a kind of ball valve, including driving mechanism, transmission mechanism, valve body group
Part and spool, the driving mechanism include electric machine assembly, casing and attachment base, and the electric machine assembly includes motor shaft, the biography
Motivation structure includes planetary wheeling assembly and valve rod, and the motor shaft and the planetary wheeling assembly are sequentially connected, one end of the valve rod
It is fixedly connected with the planetary wheeling assembly, the other end of the valve rod and the spool are sequentially connected, and the valve component includes
Main valve body and gear-box, the gear-box are formed with the second chamber, and one end of the gear-box is fixedly connected with the attachment base, institute
Sealed set between gear-box and the attachment base is stated, the other end of the gear-box is fixed with the main valve body and junction is close
Envelope, a part of the valve rod are located at the gear-box, and a part is located at the main valve body；
The ball valve further includes main valve body cavity, first passage, second channel and third channel, and the spool is placed in described
Main valve body cavity, the spool are provided with runner, and by controlling the movement of the spool, the third channel can by the runner
Selection is connected to the first passage or second channel.
The planetary wheeling assembly is at least partly installed on second chamber, and the planetary wheeling assembly includes planetary gear set and limit
Position column, the limited post and the main valve body are fixed or one, and the planetary gear set includes the limit with limited post cooperation
Position portion, the first gear ring and the second gear ring, the limiting section are set to second gear ring towards the spool side, the limit
At least part of column protrudes into the limiting section, the second gear ring and valve rod is fixed or one, the limited post with
When the one end inner wall of the limiting section abuts against, the planetary gear set stops operating.
The limiting section include two arcuate sockets, the limited post pass through the arcuate socket, the inner wall of the arcuate socket with
It is slidably matched between the limited post；Or the limiting section includes two arc grooves, the arc groove and the limit
Column is slidably matched.
There are two the limited posts, and two limited posts are symmetrical centered on the center of circle of the second gear ring, described
Symmetrical centered on the center of circle of the second gear ring and arc chord angle in 90 ° of two limiting sections is arranged.
The main valve body further includes the first opening portion and the second opening portion, and the valve rod passes through first opening portion and protrudes into
The main valve body cavity is provided with valve deck in second opening portion, and a part of second channel is located at the main valve body, and one
The second channel is divided to be located at the valve deck；
The valve deck includes large diameter portion and small diameter portion, and the small diameter portion is provided with annular in one end far from the large-diameter portion
Sealing ring, the large-diameter portion of the valve deck and second opening portion are provided at groove, the annular groove and main valve body cooperation
Inner wall between seal；
The port that the first passage is located at the port of main valve body outer wall and second channel is located at main valve body outer wall is located at institute
State the same side outer wall of main valve body.
The first valve seat and the second valve seat are provided in the main valve body, the spool is set to first valve seat and second
Between valve seat, the spool is slidably matched with first valve seat, and the spool is slidably matched with second valve seat, and described
One valve seat is set between the first passage and the spool, and second valve seat is set to the second channel and the valve
Between core, and first valve seat is set to the valve deck.
Described sleeve pipe includes tubular body and upper cover plate, and the upper cover plate includes the cooperation with tubular body cooperation
Portion, the tubular body and the upper cover plate are sealed in the matching part and are fixed, and the upper cover plate further includes towards the set
Annular protrusion inside pipe, one end of the motor shaft are limited in the annular protrusion, the tubular body and the upper cover plate
Fixed or one.
End face portion in the main valve body and one end of gear-box cooperation is additionally provided with intercommunicating pore, the intercommunicating pore
One end is connected with the main valve body cavity, and the other end of the intercommunicating pore is connected with second chamber, and second chamber passes through
The intercommunicating pore is connected to the main valve body cavity.
The runner includes the first duct and the second duct, and the one end in first duct is located at the outer wall of the spool
Portion, the other end in first duct are connected with second duct, and the one end in second duct is located at the spool
Outside wall portions, the other end in second duct are connected with first duct, first duct and second duct
Junction is located at center or the immediate vicinity of the spool；In the direction upslide perpendicular to first duct and the second duct
Shadow, the angular range formed between first duct and the projection in the second duct are as follows: 45 °~135 °.
The runner includes the first duct, the second duct and third duct, and the one end in first duct is located at the valve
The outside wall portions of core, the other end in first duct are connected with second duct and third duct, second duct
One end is located at the outside wall portions of the spool, and the other end in second duct is connected with first duct and third duct,
The one end in the third duct is located at the outside wall portions of the spool, the other end in the third duct and first duct and the
Two ducts are connected, and the junction in first duct, the second duct and third duct is attached at the center of the spool or center
Closely, first duct and the third duct are coaxially disposed.
By using planetary wheeling assembly as transmission device, structure relative compact opposite can reduce ball valve of the invention
Volume, and can valve rod be not exposed to outside ball valve in use, it can be adapted for high sealing performance requirement.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the ball valve of one embodiment of the present invention；
Fig. 2 is the stereoscopic schematic diagram of ball valve shown in Fig. 1；
Fig. 3 is the stereoscopic schematic diagram of planetary gear set in ball valve shown in Fig. 1；
Fig. 4 is the schematic top plan view of planetary wheeling assembly in ball valve shown in Fig. 1；
Fig. 5 is the structural schematic diagram of the second gear ring and limited post cooperation in gear set；
Fig. 6 is the schematic cross-sectional view of planetary wheeling assembly；
Fig. 7 is spool stereoscopic schematic diagram；
Fig. 8 is spool schematic cross-sectional view；
Fig. 9 is planetary wheeling assembly stereoscopic schematic diagram；
Figure 10 is the first working state schematic representation of ball valve；
Figure 11 is the second working state schematic representation of ball valve；
Figure 12 is spool position schematic diagram when pressure release is played in slot channel；
Figure 13 is ball valve locally mark schematic diagram；
Figure 14 is the spool schematic cross-sectional view of another embodiment；
Figure 15 is spool position schematic diagram when pressure release is played in slot channel shown in Figure 14；
Figure 16 is the spool schematic cross-sectional view in the ball valve of another embodiment；
Figure 17 is the first working state schematic representation of Figure 16 embodiment ball valve；
Figure 18 is the third working state schematic representation of Figure 16 embodiment ball valve；
Figure 19 is the second working state schematic representation of Figure 16 embodiment ball valve；
Figure 20 plays core position view when pressure release for the slot channel of Figure 16 embodiment ball valve；
Figure 21 plays spool another location schematic diagram when pressure release for the slot channel of Figure 16 embodiment ball valve；
Figure 22 is the valve plug in ball valve schematic cross-sectional view of a further embodiment.
Each label successively indicates in figure: 1. sun gears, 2. planetary gears, 3. first gear rings, 4. second gear ring, 5. stator coil,
6. motor shaft, 7. rotors, 8. casings, 9. upper cover plates, 10. driving mechanisms, 11. transmission mechanisms, 12. valve components, 13. card slots,
14. attachment base, 15. arc grooves, 16. gear-boxes, 17. second opening portions, 18. gaskets, 19. valve rods, 20. sealing rings, 22.
First valve seat, 23. valve decks, 24. main valve bodies, 25/25'. spool, 26. intercommunicating pores, 27. planetary wheeling assemblies, 28. first mounting plates,
29. the second mounting plate, 30. gear shafts, 31. limited posts, 32. arcuate sockets, 33. first opening portions, 34. first passages, 35. second
Channel, 36. third channels, 37. second valve seats, the first concave part of 38/38'., the second concave part of 39/39'., 40. electric machine assemblies,
41/41'. runner, 43. third concave parts, 45. the 4th concave parts, 50. planetary gear sets, the first duct 51/51'., 52/52'.
Two ducts, 53. third ducts, the first gap of 54/54'. portion, the second gap of 55/55'. portion, 56. third gap portions, 57. the 4th
Gap portion, 111. second chambers, 121. main valve body cavitys, 231. annular grooves, 232. small diameter portions, 233. large-diameter portions, in 321. ends
Wall, the first duct 411/411'. port part, the second duct 412/412'. port part, 413. third duct port parts, 801.
One chamber, the first circular arc line of a., the second circular arc line of b., c. third circular arc line, the 4th circular arc line of d., the 5th circular arc line of e..
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with attached drawing.
One embodiment of the present invention is as shown in figure 1 to figure 13.The ball valve of present embodiment includes driving mechanism 10, transmission
Mechanism 11, valve component 12 and spool 25.Driving mechanism 10 includes electric machine assembly 40, casing 8, attachment base 14, electric machine assembly 40
Including stator coil 5, motor shaft 6 and rotor 7, stator coil 5 is sheathed on casing 8, and rotor 7 is built in casing 8, motor shaft 6 with
Rotor 7 is fixedly connected, and is rotated by rotor 7 and motor shaft 6 is driven to rotate.Attachment base 14 is arranged between casing 8 and gear-box 16,
At least part of motor shaft 6 passes through attachment base 14.
One end of attachment base 14 includes the stage portion cooperated with casing 8, and casing 8 passes through welding in stage portion with attachment base 14
Etc. modes seal fixation.Casing 8 includes tubular body and upper cover plate 9, and upper cover plate 9 includes the auxiliary section with tubular body cooperation,
Tubular body and upper cover plate 9 are sealed in matching part to be fixed, it is pointed out here that tubular body can be integrated with upper cover plate 9
Structure.Upper cover plate 9 further includes the annular protrusion near its center towards inside casing 8.One end of motor shaft 6 is limited in
Annular protrusion.By the way that annular protrusion is arranged, the stability of the rotation of motor shaft 6 can be improved, and reduce abrasion.
Ball valve further includes the first chamber 801, here it should be noted that the first chamber 801 is formed in casing 8 or the first chamber 801
It is formed between a part of attachment base 14 and a part of casing 8 or the first chamber 801 is formed in attachment base otherwise
Between 14 and casing 8；Rotor 7 is located at the first chamber 801, and motor shaft 6 is at least a part of to be located at the first chamber 801.By casing 8 with
Upper cover plate 9 is sealed in matching part and is fixed, and can prevent the first chamber 801 from connecting in casing 8 and the matching part of upper cover plate 9 with outside
It is logical, opposite it can improve sealing performance.
Valve component 12 includes gear-box 16 and main valve body 24, and ball valve is formed with the second chamber 111 in gear-box 16, here
It should be noted that the second chamber 111 be formed in a part of attachment base 14, a part of a part of gear-box 16 and main valve body 24 it
Between or the second chamber 111 be formed between attachment base 14, gear-box 16 and main valve body 24 otherwise.The one of gear-box 16
The stage portion having with the one end fits of attachment base 14 is held, stage portion is formed with stepped hole and is connected to the second chamber 111, the stage portion
It can be connected through a screw thread with one end of attachment base 14, gasket 18 is also provided between attachment base 14 and stage portion, with
Realize sealing.One end of gear-box 16 is fixedly connected with attachment base, and the other end and main valve body 24 of gear-box 16 are fixed, and
The fixed position sealed set of gear-box and main valve body, such as by welding, fix gear-box mutually with main valve body, and solid
Determining position may be implemented to seal, naturally it is also possible to the other forms such as be connected through a screw thread and fix.
Transmission mechanism 11 includes planetary wheeling assembly 27 and valve rod 19, and planetary wheeling assembly 27 is at least partially disposed at the second chamber 111.
Planetary wheeling assembly 27 includes planetary gear set 50 and limited post 31, and planetary gear set 50 includes sun gear 1, multiple planetary gears 2, the first tooth
Enclose the 3, second gear ring 4, the first mounting plate 28, the second mounting plate 29, gear shaft 30.Motor shaft 6 passes through in the part of attachment base 14
At least part is sequentially connected with the planetary wheeling assembly 27 in gear-box 16, here it should be noted that motor shaft 6 and sun gear 1 can
To crimp or be connected together by interference, when motor shaft 6 rotates, sun gear 1 is rotated synchronously, and then drives planetary wheeling assembly
27 rotations.The quantity of planetary gear 2 is three in the present embodiment, and the first mounting plate 28 and the second mounting plate 29 can be annulus
Shape structure, middle part round tube hole are convenient for the cooperation of motor shaft 6 and sun gear 1, and three planetary gears 2 are by gear shaft 30 can turn
Dynamic mode is arranged between the first mounting plate 28 and the second mounting plate 29.
Three planetary gears 2 all engage connection with sun gear 1, and the first gear ring 3 and the second gear ring 4 all have interior teeth portion, planet
One end of wheel 2 engages connection with the first gear ring 3 in the interior teeth portion of the first gear ring 3, and the other end of planetary gear 2 is in the second gear ring 4
Interior teeth portion engages connection with the second gear ring 4.First gear ring 3 is fixedly connected in the side far from planetary gear 2 with gear-box 16, such as
Gear-box 16 is installed on by way of being interference fitted or limiting cooperation.
Second gear ring 4 includes limiting section, and limiting section is set to the second gear ring 4 towards the side of spool 25, the limiting section packet
Two arcuate sockets 32 are included, two arcuate sockets 32 are symmetrical centered on the center of circle of the second gear ring 4.Main valve body 24 be provided with
The limited post that limiting section matches, two limited posts 31 are also symmetrical centered on the center of circle of the second gear ring 4.Limited post 31 can
By with main valve body 24 by welding etc. in a manner of fix or limited post 31 and main valve body 24 or integral structure.Limited post
31 pass through arcuate socket 32, and by being limited with the cooperation of the inner wall of arcuate socket 32, the both ends of arcuate socket 32 can limit planet
The slewing area of wheel group 50, wherein one end inner wall 321 and limit when the second gear ring 4 rotates clockwise, when arcuate socket 32
When column 31 abuts against, the second gear ring 4 stops operating in the clockwise direction, under normal circumstances by setting arcuate socket both ends it
Between arc chord angle size can limit the slewing area of planetary gear set, in the present embodiment, the arc chord angle of arcuate socket 32 is set as
90 °, herein it is to be understood that in different operating environment, the setting of being adapted to property of arc angle.
Second gear ring 4 can be fixedly connected with one end of valve rod 19 by in-mould injection, and valve rod 19 and the second gear ring 4 are together
Rotation.Here it should be noted that the second gear ring 4 can also be prepared by metal material, the second gear ring 4 have centre bore, valve rod 19 with
Centre bore special-shaped can be arranged by interference crimping or centre bore, and correspondingly the shape of valve rod matches and realizes rotation
It drives.This transmission mechanism structure relative compact, small volume, so that the volume of ball valve be made to reduce.
Its working principle is that: when motor shaft 6 rotates clockwise, sun gear 1 is driven to rotate clockwise, is connected by engagement
Planetary gear 2 is driven to rotate, the first gear ring 3 is fixed, while planetary gear 2 is rotated around its own axis, also with the work of sun gear 1
It circumferentially rotates, i.e., is rotated centered on motor shaft 6, to drive the rotation of the second gear ring 4, while valve rod 19 and the second gear ring 4 one
Rotation is played, rotational angle is from 0 °~90 °, and when the one end inner wall of arcuate socket 32 is abutted against with limited post, the second gear ring is at it
It stops operating on the direction of rotation, when motor shaft 6 rotates counterclockwise similarly, will not repeat them here.
Here it should be noted that can also the limit method of planetary gear set be as shown in Figure 9 recessed by the arc of the second gear ring 4
The limit that is slidably matched is carried out between slot 15 and limited post 31, when the one end inner wall and limited post 31 of arc groove 15 abut against,
Planetary gear set 50 stops operating.This limit method reduces the length of limited post, so that the more compact structure of planetary wheeling assembly.
The upper end of main valve body 24 is equipped with the first opening portion 33, and right side is equipped with the second opening portion 17 (Fig. 1 and Fig. 2), and ball valve exists
Second opening portion, 17 place position is provided with valve deck 23, and valve deck 23 and the sealing of the second opening portion 17 are fixed.The shape in main valve body 24
At there is main valve body cavity 121, here it should be noted that main valve body cavity 121 is formed in a part and valve deck 23 of second opening portion 17
Between a part or main valve body cavity 121 is formed in otherwise between the second opening portion 17 and valve deck 23.The one of valve rod 19
End is fixedly connected with the second gear ring 4, and the other end passes through the main valve body cavity 121 that main valve body 24 is protruded into the first opening portion 33.Spool 25
It is placed in main valve body cavity 121, spool 25 is provided with the card slot 13 matched with valve rod 19.The other end and spool 25 of valve rod 19 are logical
The connection of card slot 13 is crossed, when valve rod 19 rotates, valve rod 19 is rotated together with movable valve plug 25, to realize cutting for ball valve working condition
It changes.
Ball valve further includes first passage 34, second channel 35 and the third channel 36 that can be used in being connected to outside, just single
For a 24 part of main valve body, first passage 34, second channel 35 and third channel 36 are connected with main valve body cavity 121, but
In product, by control valve core 25 make first passage 34, second channel 35 and third channel 36 be connected with main valve body cavity 121 or
Person is not connected to or third channel 36 is selective is connected to first passage 34 or second channel 35.
Ball valve is additionally provided with the first valve seat 22 and the second valve seat 37 in main valve body 24, and spool 25 is set to 22 He of the first valve seat
Between second valve seat 37 (Fig. 1), the first valve seat 22 is set between first passage 34 and spool 25, and the second valve seat 37 is set to
Between two channels 35 and spool 25, support can be played the role of to spool 25 by the first valve seat 22 and the second valve seat 37, also
The first valve seat 22 and the second valve seat 37 can be made to seal with 25 contact site of spool, and spool 25 respectively with the first valve seat 22
It is slidably matched with the second valve seat 37, the first valve seat 22 is set to valve deck 23.In order to improve sealing performance, in the first valve seat 22 and valve
Sealing ring can be set between lid 23, between valve deck 23 and main valve body 24, between the second valve seat 37 and main valve body 24.
Valve deck 23 includes large-diameter portion 233 and small diameter portion 232, and small diameter portion 232 is provided with ring in one end far from large-diameter portion 233
It is provided with sealing ring 20 at connected in star 231, annular groove 231 and main valve body cooperation, valve deck 23 can lead to the second opening portion 17
Threaded connection is crossed, and or, the large-diameter portion 233 of valve deck 23 can be solid by welded seal at the cooperation with the second opening portion 17
It is fixed.Sealing ring sealing can choose one way in which with welded seal, it might even be possible to two kinds be selected, as close in present embodiment
Seal 20 far from welded seal at, therefore can be avoided sealing ring 20 welding when temperature distortion, while by setting sealing ring
With two kinds of sealing means of welding, the leakproofness of main valve body can be improved.
In the present embodiment, a part of second channel 35 is located at main valve body 24, and a part is located at valve deck 23, main valve body
24 cooperatively form second channel 35 with valve deck 23, the first valve seat 22.In the present embodiment, by using the side of setting valve deck
On the one hand formula is conducive to install the first valve seat 22, the second valve seat 37 and spool 25, be on the other hand also beneficial to processing first passage
34 and second channel 35, first passage 34 and second channel 35 can be reasonably arranged, so that first passage 34 and second channel
35 are located at the side wall of main valve body cavity 121 with 121 junction of main valve body cavity, first passage 34 be located at the port part of main valve body outer wall with
The port part that second channel 35 is located at main valve body outer wall can be located at the same side outer wall of main valve body, such as main valve body bottom, the
The external connection end in one channel 34 and the external connection end of second channel 35 can be all located at the bottom of main valve body, to keep main valve body structure tight
It gathers, and installation space can be reduced.
End face portion of the main valve body 24 in one end that main valve body 24 and gear-box 16 cooperate is additionally provided with intercommunicating pore 26, intercommunicating pore
26 one end is connected with main valve body cavity 121, and the other end of intercommunicating pore 26 is connected with the second chamber 111, and the second chamber 111 passes through company
Through-hole 26 is connected to main valve body cavity 121 can balance the pressure difference between the second chamber 111 and main valve body cavity 121 in this way, reduce driving
Driving force needed for spool 25.
As Figure 7-8, spool 25 is a spherical or near-spherical structure, certain spool 25 or cylindric knot
Structure, spool 25 are provided with runner 41.In the present embodiment, the runner 41 of spool 25 includes the first duct 51 and the second duct
52, the one end in the first duct 51 is located at the outside wall portions of spool 25, and the other end in the first duct 51 is connected with the second duct 52, the
The one end in two ducts 52 is located at the outside wall portions of spool, and the other end in the second duct 52 is connected with the first duct 51, the first duct
51 and second the junction in duct 52 be located at center or the immediate vicinity of spool 25.Perpendicular to the first duct 51 and the second duct
It is projected on 52 direction, the angular range formed between the first duct 51 and the projection in the second duct 52 are as follows: 45 °~135 °.
Runner 41 is respectively the first duct port part 411 and the second duct port part 412 in the port of 25 outside wall portions of spool,
The slot channel of the outside wall portions of spool 25 includes the first concave part 38 and the second concave part 39, and one end of the first concave part 38 is located at the
One duct port part 411, the first concave part 38 are connected to the first duct 51, and one end of the second concave part 39 is located at the second duct end
Oral area 412, the second concave part 39 are connected to the second duct 52.The axis in the first duct 51 and the axis in the second duct 52 are located at same
One plane is located approximately at same plane, as shown in figure 8, the surface of the plane and spool 25 intersects at two circular arc lines: first
Circular arc line a and the second circular arc line b, the first concave part 38 is in the first circular arc line a and 411 intersection of the first duct port part or intersection
Near place, extend along the direction of the first circular arc line a away from the first duct 51, deviates from the first duct along the first circular arc line a
The depth in 51 direction, the first concave part 38 gradually becomes smaller.
Second concave part 39 is near the first circular arc line a and 412 intersection of the second duct port part or intersection, along back
The direction of the first circular arc line a from the second duct 52 extends, and deviates from the direction in the second duct 52 along the first circular arc line a, and second
The depth of concave part gradually becomes smaller.
The circulation area of first concave part 38 and the circulation area of the second concave part 39 are much smaller than the circulating face of runner 41
Product.The circulation area of first concave part 38 and the circulation area specific size of the second concave part 39 then determine by system, here not
It is specifically limited.
Here it should be noted that the depth of the first concave part 38 can be constant on the direction away from the first duct 51, second
The depth of concave part 39 can also be constant on the direction away from the second duct 52.
Here it should also be noted that the depth of the first concave part 38 away from the first duct 51 direction on can first increase after
Become smaller, the depth of the one end of the first concave part 38 far from the first duct port part 411 is less than the first concave part 38 close to the first hole
The depth of the depth of one end of road port part 411, the second concave part 39 can first increase on the direction away from the second duct 52
After become smaller, the depth of the one end of the second concave part 39 far from the second duct port part 412 is less than the second concave part 39 close to second
The depth of one end of duct port part 412.
The ball valve of the embodiment includes at least two kinds of working conditions: the first working condition and the second working condition.First
When working condition, as shown in Figure 10, runner 41 is connected to first passage 34 and third channel 36, second channel 35 are cut by spool 25
Disconnected, fluid can be flowed into from third channel 36, be flowed out through runner 41 from first passage 34；In the second working condition, such as Figure 11
Shown, runner 41 is connected to second channel 35 and third channel 36, first passage 34 are truncated by spool 25, and fluid can be logical from third
Road 36 flows into, and flows out through runner 41 from second channel 35.
Slot channel can play the role of pressure release when switching between the first working condition and the second working condition of ball valve,
As shown in figure 12, ball valve is from the first working condition to during the second active state, when spool 25 is located at shown in Figure 12
Position when, i.e., when from the first working condition to the intermediate state of the second active state, fluid is flowed into from third channel 36,
Due to the presence of the first concave part 38 and the second concave part 39, so that third channel 36 and first passage 34 and second channel 35 1
The conducting of small flow is directly kept, fluid flows into first passage 34 and second channel by the first concave part 38 and the second concave part 39
35, so as to avoid ball valve, system pressure is excessively high in this case, can prevent fluid flow noise and reduce to drive
Driving force needed for movable valve plug.
Here it should be noted that spool 25 is to turn to the first working condition corresponding with the intermediate state of the second working condition
Before position, the first concave part 38 and the second concave part 39 have just made third channel 36 and first passage 34 and second channel
35 are connected to simultaneously；By the way that the size of the first concave part 38 and the corresponding central angle of the second concave part 39 is arranged, can accurately control
After spool 25 rotates clockwise certain angle from the corresponding position of the first working condition, the first concave part 38 and the second concave part 39
So that third channel 36 is connected to simultaneously with first passage 34 and second channel 35, setting spool 25 is corresponding from the first working condition
After position rotates clockwise β angle, the first concave part 38 is connected to second channel 35, the circle between 38 two-end-point of the first concave part
The central angle of camber line is set as θ, thenWherein R1 is runner 41
Diameter, R2 are the diameter of second channel 35, and R0 is the diameter (Figure 13) of spool 25, and wherein β may range from 0 °~45 °
Here it should also be noted that the first concave part 38 or the second concave part 39 can also be separately provided, in ball valve from
One working condition is also avoided that system pressure is excessively high to during the second active state.
In another embodiment, as shown in figure 14, slot channel further includes the first gap portion 54 and the second gap portion 55, and
One gap portion 54 is arranged between the first concave part 38 and the first duct port part 411, and the first concave part 38 passes through the first gap
Portion 54 is connected to runner 41, and the depth in the first gap portion 54 is greater than the depth of the first concave part 38, is deviated from along the first circular arc line a
The depth in the direction in the first duct 51, the first gap portion 54 gradually becomes smaller, the gradually smaller amplitude of depth of the first concave part 38
Less than the gradually smaller amplitude of depth in the first gap portion 54.
Second gap portion 55 is arranged between the second concave part 39 and the second duct port part 412, and the second concave part 39 is logical
It crosses the second gap portion 55 to be connected to runner 41, the depth in the second gap portion 55 is greater than the depth of the second concave part 39, along first
Circular arc line a deviates from the direction in the second duct 52, and the depth in the second gap portion 55 gradually becomes smaller, and the depth of the second concave part 39 is gradually
Depth gradually smaller amplitude of the amplitude to become smaller less than the second gap portion 55.In this way, making the first concave part 38 and
Circulation area of two concave parts 39 with runner 41 in connectivity part increases, i.e. the circulation area of fluid is larger, therefore, in the first work
Intermediate state from state to the second active state when, slot channel have better pressure release effect.
Another embodiment of the invention is as shown in Figure 16 to Figure 21.The runner 41' of the spool 25' of present embodiment includes
First duct 51', the second duct 52' and third duct 53', one end of the first duct 51' are located at the outside wall portions of spool 25', the
The other end of one duct 51' is connected with the second duct 52' and third duct 53, and one end of the second duct 52' is located at spool 25'
Outside wall portions, the other end of the second duct 52' is connected with the first duct 51' and third duct 53, the one end in third duct 53
Positioned at the outside wall portions of spool 25', the other end in third duct 53 is connected with the first duct 51' and the second duct 52', the first hole
Center or immediate vicinity of the junction of road 51', the second duct 52' and third duct 53 in spool 25', the first duct 51' with
Third duct 53 is coaxially disposed, and the axis of the second duct 52' axis common with the first duct 51' and third duct 53 mutually hangs down
Directly, runner 41' the port of spool 25' outside wall portions be respectively the first duct port part 411', the second duct port part 412' and
Third duct port part 413, the slot channel of the outside wall portions of spool 25' include the first concave part 38', the second concave part 39', third
One end of concave part 43 and the 4th concave part 45, the first concave part 38' is located at the first duct port part 411', the first concave part
38' is connected to the first duct 51', and one end of the second concave part 39' is located at the second duct port part 412', the second concave part 39'
It is connected to the second duct 52', one end of third concave part 43 is located at the second duct port part 412', third concave part 43 and second
Duct 52' connection, one end of the 4th concave part 45 are located at third duct port part 413, the 4th concave part 45 and third duct 53
Connection.
The common axis of the axis of second duct 52' and the first duct 51' and third duct 53 is generally aligned in the same plane or closely
It is seemingly generally aligned in the same plane, as shown in figure 16, the plane and spool face intersect at three circular arc lines: third circular arc line c, the 4th circle
Camber line d and the 5th circular arc line e, the first concave part 38' are in third circular arc line c and the first duct intersection port part 411' or intersection
Near place, extend along the direction of the third circular arc line c away from the first duct 51', deviates from the first duct along third circular arc line c
The depth in the direction of 51', the first concave part 38' gradually becomes smaller.
Second concave part 39' near the 4th circular arc line d and the second duct intersection port part 412' or intersection, along
Direction away from the 4th circular arc line d of the second duct 52' extends, and the direction of the second duct 52' is deviated from along the 4th circular arc line d,
The depth of second concave part 39' gradually becomes smaller.
Third concave part 56 and the axisymmetric other side that second duct port part 412' is set the second concave part 39',
4th concave part 45 and the axisymmetric setting of the first concave part 38' are in third duct port part 413.
The ball valve of the embodiment includes three kinds of working conditions: the first working condition, the second working condition and third work shape
State.In the first working condition, as shown in figure 17, runner 41' is connected to first passage 34 and third channel 36,35 quilt of second channel
Spool 25' truncation, fluid can be flowed into from third channel 36, be flowed out through runner 41' from first passage 34；In third working condition
When, as shown in figure 18, runner 41' connection first passage 34, second channel 35 and third channel 36, fluid can be from third channels
36 flow into, and flow out respectively from first passage 34 and second channel 35 through runner 41'；In the second working condition, as shown in figure 19,
Runner 41' connection second channel 35 and third channel 36, first passage 34 are truncated by spool 25', and fluid can be from third channel
36 flow into, and flow out through runner 41' from second channel 35.
Equally, the concave part of spool face works in the first or second working condition and third of ball valve in present embodiment
It can play the role of pressure release when switching between state, Figure 20 is spool position schematic diagram when pressure release is played in slot channel, i.e.,
When from the first working condition to the intermediate state of third active state, fluid is flowed into from third channel 36 at this time, due to the
It is small that two concave part 39' and the first concave part 38' are always maintained at third channel 36 with first runner 34 and second flow channel 35 respectively
The conducting of flow, fluid separately flow into first runner 34 and second flow channel by the second concave part 39' and the first concave part 38'
35, so as to discharge the pressure of system, avoid generating biggish fluid noise because of hypertonia, while can also reduce driving valve
Driving force needed for core.Figure 21 is spool another location schematic diagram when pressure release is played in slot channel, similarly, by third concave part
43 and the 4th concave part 45 conducting effect realize pressure release.
In a further embodiment of the invention, as shown in figure 22, slot channel further includes the first gap portion 54', the second gap
Portion 55', third gap portion 56 and the 4th gap portion 57, the first gap portion 54' are arranged in the first concave part 38' and the first duct end
Between oral area 411', the first concave part 38' is connected to by the first gap portion 54' with runner, and the depth of the first gap portion 54' is greater than
The depth of first concave part 38' deviates from the direction of the first duct 51', the depth of the first gap portion 54' along third circular arc line c
It gradually becomes smaller, depth gradually smaller width of the gradually smaller amplitude of depth less than the first gap portion 54' of the first concave part 38'
Degree.
Second gap portion 55' is arranged between the second concave part 39' and the second duct port part 412', the second concave part
39' is connected to by the second gap portion 55' with runner, and the depth of the second gap portion 55' is greater than the depth of the second concave part 39', edge
The 4th circular arc line d deviate from the direction of the second duct 52', the depth of the second gap portion 55' gradually becomes smaller, the second concave part 39'
The gradually smaller amplitude of depth is less than the second gradually smaller amplitude of gap portion 55' depth.
Third gap portion 56 is arranged between third concave part 56 and the second duct port part 412', and third concave part 56 is logical
It crosses third gap portion 56 to be connected to runner, third gap portion 56 and the axisymmetric setting of the second gap portion 55' are at the second duct end
Oral area 412'.
4th gap portion 57 is arranged between the 4th concave part 45 and third duct port part 413, and the 4th concave part 45 is logical
It crosses the 4th gap portion 57 to be connected to runner, the 4th gap portion 57 and the axisymmetric setting of the first gap portion 54' are at third duct end
Oral area 413.
So set, pressure release effect of the ball valve in switch mode can be improved.The other parts of present embodiment with it is upper
It is same or similar to state embodiment, no longer repeats one by one here.
Here it should be noted that slot channel is also possible to through-hole, one end of through-hole is connected with runner 41, the other end of through-hole
Positioned at the outside wall portions of the spool.
It should be understood that the above embodiments are only used to illustrate the present invention and not limits technology described in the invention
Scheme, such as "front", "rear", "left", "right", "upper", "lower" isotropy are defined, although this specification is referring to above-mentioned
The present invention has been described in detail for embodiment, still, those skilled in the art should understand that, affiliated technology
The technical staff in field still can modify or equivalently replace the present invention, and all do not depart from spirit of the invention and
The technical solution and its improvement of range, should all cover in scope of the presently claimed invention.
Claims (10)
1. a kind of ball valve, including driving mechanism, transmission mechanism, valve component and spool, which is characterized in that the driving mechanism packet
Electric machine assembly, casing and attachment base are included, the electric machine assembly includes motor shaft, and the transmission mechanism includes planetary wheeling assembly and valve
Bar, the motor shaft and the planetary wheeling assembly are sequentially connected, and one end of the valve rod is fixedly connected with the planetary wheeling assembly,
The other end of the valve rod and the spool are sequentially connected, and the valve component includes main valve body and gear-box, the gear-box
It is formed with the second chamber, one end of the gear-box is fixedly connected with the attachment base, between the gear-box and the attachment base
Sealed set, the other end of the gear-box and the main valve body are fixed and junction seals, and a part of the valve rod is located at
The gear-box, a part are located at the main valve body；
The ball valve further includes main valve body cavity, first passage, second channel and third channel, and the spool is placed in the main valve
Body cavity, the spool are provided with runner, and by controlling the movement of the spool, the third channel may be selected by the runner
Be connected to the first passage or second channel.
2. ball valve according to claim 1, which is characterized in that the planetary wheeling assembly is at least partly installed on described second
Chamber, the planetary wheeling assembly include planetary gear set and limited post, and the limited post and the main valve body are fixed or one, described
Planetary gear set includes limiting section, the first gear ring and the second gear ring with limited post cooperation, and the limiting section is set to described
For second gear ring towards the spool side, at least part of the limited post protrudes into the limiting section, second gear ring with
The valve rod is fixed or one, when the one end inner wall of the limited post and the limiting section abuts against, the planetary gear set
It stops operating.
3. ball valve according to claim 2, which is characterized in that the limiting section includes two arcuate sockets, the limited post
Across the arcuate socket, it is slidably matched between the inner wall of the arcuate socket and the limited post；Or the limiting section includes two
A arc groove, the arc groove are slidably matched with the limited post.
4. ball valve according to claim 2 or 3, which is characterized in that there are two the limited posts, and two limited posts
It is symmetrical centered on the center of circle of the second gear ring, described two limiting sections it is symmetrical centered on the center of circle of the second gear ring and
It is arranged in 90 ° of arc chord angles.
5. ball valve according to claim 4, which is characterized in that the main valve body further includes the first opening portion and the second opening
Portion, the valve rod pass through first opening portion and protrude into the main valve body cavity, and second opening portion is provided with valve deck, and one
The second channel is divided to be located at the main valve body, a part of second channel is located at the valve deck；
The valve deck includes large diameter portion and small diameter portion, and the small diameter portion is provided with annular recessed in one end far from the large-diameter portion
Sealing ring, the large-diameter portion of the valve deck and second opening portion are provided at slot, the annular groove and main valve body cooperation
It is sealed between inner wall；
The port that the first passage is located at the port of main valve body outer wall and second channel is located at main valve body outer wall is located at the master
The same side outer wall of valve body.
6. ball valve according to claim 5, which is characterized in that be provided with the first valve seat and the second valve in the main valve body
Seat, the spool are set between first valve seat and the second valve seat, and the spool is slidably matched with first valve seat, institute
It states spool to be slidably matched with second valve seat, first valve seat is set between the first passage and the spool, institute
It states the second valve seat to be set between the second channel and the spool, and first valve seat is set to the valve deck.
7. ball valve according to claim 6, which is characterized in that described sleeve pipe includes tubular body and upper cover plate, it is described on
Cover board includes the auxiliary section with tubular body cooperation, and the tubular body and the upper cover plate are sealed in the matching part
Fixed, the upper cover plate further includes towards the annular protrusion inside described sleeve pipe, and one end of the motor shaft is limited in the ring
Shape protrusion, the tubular body and the upper cover plate are fixed or one.
8. ball valve according to claim 1-7, which is characterized in that cooperate in the main valve body and the gear-box
The end face portion of one end be additionally provided with intercommunicating pore, one end of the intercommunicating pore is connected with the main valve body cavity, the intercommunicating pore
The other end be connected with second chamber, second chamber is connected to the main valve body cavity by the intercommunicating pore.
9. ball valve according to claim 1, which is characterized in that the runner includes the first duct and the second duct, described
The one end in the first duct is located at the outside wall portions of the spool, and the other end in first duct is connected with second duct,
The one end in second duct is located at the outside wall portions of the spool, and the other end in second duct is connected with first duct
Logical, the junction in first duct and second duct is located at center or the immediate vicinity of the spool；Perpendicular to institute
It states and is projected on the direction in the first duct and the second duct, the angle model formed between first duct and the projection in the second duct
It encloses are as follows: 45 °~135 °.
10. ball valve according to claim 1, which is characterized in that the runner includes the first duct, the second duct and third
Duct, the one end in first duct are located at the outside wall portions of the spool, the other end in first duct and second hole
Road is connected with third duct, and the one end in second duct is located at the outside wall portions of the spool, second duct it is another
End is connected with first duct and third duct, and the one end in the third duct is located at the outside wall portions of the spool, described
The other end in third duct is connected with first duct and the second duct, first duct, the second duct and third hole
Center or immediate vicinity of the junction in road in the spool, first duct and the third duct are coaxially disposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353365.0A CN110388496A (en) | 2018-04-19 | 2018-04-19 | Ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810353365.0A CN110388496A (en) | 2018-04-19 | 2018-04-19 | Ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110388496A true CN110388496A (en) | 2019-10-29 |
Family
ID=68282808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810353365.0A Pending CN110388496A (en) | 2018-04-19 | 2018-04-19 | Ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110388496A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006033A (en) * | 2019-11-26 | 2020-04-14 | 浙江农林大学暨阳学院 | Electric regulating valve |
| CN114520438A (en) * | 2022-02-23 | 2022-05-20 | 深圳中科捷飞科技有限公司 | Charging device and control method |
| WO2022143289A1 (en) * | 2020-12-29 | 2022-07-07 | 浙江三花制冷集团有限公司 | Electric valve |
| CN115076435A (en) * | 2021-03-12 | 2022-09-20 | 浙江三花汽车零部件有限公司 | Electric valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59131060A (en) * | 1983-01-17 | 1984-07-27 | Aisin Seiki Co Ltd | Valve opening and closing reduction gear device |
| JPH07317929A (en) * | 1994-05-25 | 1995-12-08 | Mitsubishi Electric Corp | Three way motor-operated valve |
| JP2001173834A (en) * | 1999-12-16 | 2001-06-29 | Kubota Corp | Two-shaft rotating device by one operating shaft |
| JP2009036365A (en) * | 2007-08-03 | 2009-02-19 | Yamatake Corp | Planetary gear deceleration mechanism and electric actuator |
| JP2012122582A (en) * | 2010-12-10 | 2012-06-28 | Azbil Corp | Planetary gear mechanism and actuator for valve |
| CN206958295U (en) * | 2017-04-17 | 2018-02-02 | 浙江三花汽车零部件有限公司 | A kind of ball valve |
| CN207049360U (en) * | 2017-04-17 | 2018-02-27 | 浙江三花汽车零部件有限公司 | A kind of ball valve |
-
2018
- 2018-04-19 CN CN201810353365.0A patent/CN110388496A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59131060A (en) * | 1983-01-17 | 1984-07-27 | Aisin Seiki Co Ltd | Valve opening and closing reduction gear device |
| JPH07317929A (en) * | 1994-05-25 | 1995-12-08 | Mitsubishi Electric Corp | Three way motor-operated valve |
| JP2001173834A (en) * | 1999-12-16 | 2001-06-29 | Kubota Corp | Two-shaft rotating device by one operating shaft |
| JP2009036365A (en) * | 2007-08-03 | 2009-02-19 | Yamatake Corp | Planetary gear deceleration mechanism and electric actuator |
| JP2012122582A (en) * | 2010-12-10 | 2012-06-28 | Azbil Corp | Planetary gear mechanism and actuator for valve |
| CN206958295U (en) * | 2017-04-17 | 2018-02-02 | 浙江三花汽车零部件有限公司 | A kind of ball valve |
| CN207049360U (en) * | 2017-04-17 | 2018-02-27 | 浙江三花汽车零部件有限公司 | A kind of ball valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006033A (en) * | 2019-11-26 | 2020-04-14 | 浙江农林大学暨阳学院 | Electric regulating valve |
| CN111006033B (en) * | 2019-11-26 | 2022-05-17 | 浙江农林大学暨阳学院 | Electric regulating valve |
| WO2022143289A1 (en) * | 2020-12-29 | 2022-07-07 | 浙江三花制冷集团有限公司 | Electric valve |
| CN115076435A (en) * | 2021-03-12 | 2022-09-20 | 浙江三花汽车零部件有限公司 | Electric valve |
| CN115076435B (en) * | 2021-03-12 | 2023-10-20 | 浙江三花汽车零部件有限公司 | Electric valve |
| CN114520438A (en) * | 2022-02-23 | 2022-05-20 | 深圳中科捷飞科技有限公司 | Charging device and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110388496A (en) | Ball valve | |
| JP7024112B2 (en) | Solenoid valve | |
| US11384852B2 (en) | Ball valve | |
| CN108730553A (en) | A kind of motor-driven valve | |
| CN1690490B (en) | Shut-off valve and method of shutting off opening of vacuum chamber | |
| CN104482272A (en) | Electric commutator | |
| CN106931262A (en) | A kind of rotary liquid feeding device | |
| CN204153163U (en) | A kind of valve rod is without the straight stroke electric modulating valve moved axially | |
| CN201827439U (en) | Electric three-way valve | |
| CN209385764U (en) | Ball valve | |
| CN111350844B (en) | Ball valve | |
| CN110388481A (en) | Ball valve | |
| CN105179706B (en) | High-pressure pressure regulating valve and its assembly method | |
| CN212804368U (en) | Valve for stably distributing media | |
| CN109578361A (en) | A kind of Novel threaded plug-in rotation is straight to drive electrohydraulic servo valve | |
| CN210290814U (en) | Quick-opening valve device | |
| CN214947204U (en) | Rotary sealing movable platform | |
| CN109899562A (en) | A kind of motor-driven valve | |
| CN201221613Y (en) | Switch valve | |
| CN211438985U (en) | Six-loop rotary oil pressure distributor | |
| CN209407933U (en) | A kind of rotary table and machine tool | |
| CN210770429U (en) | Shunting ball valve | |
| CN106523740A (en) | Multi-pass rotary valve for guiding liquid flow directions | |
| CN204358210U (en) | Electronic commutator | |
| CN208919396U (en) | Ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |