CN110925450A - Flow control mechanism and control valve - Google Patents

Flow control mechanism and control valve Download PDF

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Publication number
CN110925450A
CN110925450A CN201911356693.7A CN201911356693A CN110925450A CN 110925450 A CN110925450 A CN 110925450A CN 201911356693 A CN201911356693 A CN 201911356693A CN 110925450 A CN110925450 A CN 110925450A
Authority
CN
China
Prior art keywords
valve core
valve
rotor
seat
groove
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
Application number
CN201911356693.7A
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Chinese (zh)
Inventor
任大鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Runze Fluid Controlequipment Co Ltd
Original Assignee
Nanjing Runze Fluid Controlequipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Runze Fluid Controlequipment Co Ltd filed Critical Nanjing Runze Fluid Controlequipment Co Ltd
Priority to CN201911356693.7A priority Critical patent/CN110925450A/en
Publication of CN110925450A publication Critical patent/CN110925450A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • 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
    • F16K5/04—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 cylindrical surfaces; Packings therefor
    • F16K5/0442—Spindles and actuating 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
    • 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
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • F16K11/0853—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug having all the connecting conduits situated in a single plane perpendicular to the axis of the plug
    • 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
    • F16K27/065—Construction of housing; Use of materials therefor of taps or cocks with cylindrical 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
    • 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
    • F16K31/042—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves with electric means, e.g. for controlling the motor or a clutch between the valve and the motor
    • 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
    • F16K5/08—Details

Abstract

The invention discloses a flow control mechanism, which comprises a valve core seat, a rotor valve core and an eccentric shaft, wherein the rotor valve core is slidably arranged on the valve core seat, a groove is formed in the rotor valve core and is used for communicating a fluid inlet and a fluid outlet, a guide groove is also formed in the rotor valve core, the eccentric shaft is rotatably inserted in the valve core seat, one end of the eccentric shaft is movably accommodated in the guide groove, and the eccentric shaft can be pushed to slide against the rotor valve core by rotating the eccentric shaft, so that the communication area of the groove and the fluid outlet is changed. The invention also discloses a control valve with the flow control mechanism.

Description

Flow control mechanism and control valve
Technical Field
The invention relates to the technical field of fluid control equipment, in particular to a flow control mechanism and a control valve.
Background
The reversing valve changes the connecting flow passage by means of relative movement between the rotor and the stator. At present, only the reversing valve on the market can only play a flow channel reversing function generally, but cannot control the flow of fluid independently, so that the use occasion of changing the flow of the fluid is difficult to meet, and the use limitation is large.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a flow control mechanism and control valve that can regulate fluid flow.
The technical scheme adopted by the invention for solving the technical problems is as follows: a flow control mechanism comprises a valve core seat, a rotor valve core and an eccentric shaft, wherein the rotor valve core is slidably arranged on the valve core seat, a groove is formed in the rotor valve core and used for communicating a fluid inlet and a fluid outlet, a guide groove is further formed in the rotor valve core, the eccentric shaft is rotatably inserted in the valve core seat in a penetrating mode, one end of the eccentric shaft is movably contained in the guide groove, and the eccentric shaft can be rotated to push the rotor valve core to slide, so that the communication area of the groove and the fluid outlet is changed.
Furthermore, a sliding groove is formed in the valve core seat, the rotor valve core is connected with the sliding groove in a sliding mode, and the length direction of the guide groove is perpendicular to the length direction of the sliding groove.
Further, the eccentric shaft comprises a driving shaft and a connecting column, the connecting column is convexly arranged at the end part of the driving shaft, the central axis of the connecting column and the central axis of the driving shaft are arranged in a staggered mode, and a bearing is mounted on the connecting column and contained in the guide groove.
Further, the length direction of the sliding groove is arranged along the radial direction of the valve core seat, the length direction of the groove is parallel to the length direction of the sliding groove, and the groove is arranged along the radial direction of the valve core seat.
Further, a valve core bearing is arranged between the driving shaft and the valve core seat.
Further, a rotor wear-resistant part is installed in the sliding groove in a matched mode, and the rotor wear-resistant part is attached to the rotor valve core.
A control valve comprising the flow control mechanism of any preceding claim.
Further, the control valve further comprises a valve head, the rotor valve core is attached to the valve head, a reversing interface and a common interface are arranged on the valve head, the reversing interface, the common interface and the groove all penetrate through an attachment plane of the rotor valve core and the valve head, the reversing interface forms the fluid outlet, and the common interface forms the fluid inlet.
Further, the control valve also comprises a valve seat, the valve head is arranged at one end of the valve seat, and the valve seat is sleeved outside the valve core seat.
Further, the control valve further comprises a housing and a second driving assembly, the valve seat is mounted at one end of the housing, the second driving assembly is mounted in the housing, and the second driving assembly drives the eccentric shaft to rotate.
The invention has the beneficial effects that: the flow control mechanism or the control valve provided by the invention has the advantages that the eccentric shaft is rotated, and under the limiting action of the guide groove, the eccentric shaft can be pushed against the rotor valve core to move, so that the communication area between the groove and the fluid outlet is changed, the fluid flow is further changed, the use requirement is met, and the use universality is good.
Drawings
The invention is further illustrated by the following figures and examples.
FIG. 1 is a perspective view of the control valve of the present invention;
FIG. 2 is another perspective view (with the housing omitted) of the control valve shown in FIG. 1;
FIG. 3 is a partially exploded view of the valve body of the control valve of FIG. 1;
FIG. 4 is a partially exploded view from another perspective of the valve body of the control valve of FIG. 1;
FIG. 5 is a perspective view of a drive shaft in the valve body of FIG. 3;
FIG. 6 is a schematic view of the connection between the drive shaft and the rotor core of the valve body of FIG. 3;
FIG. 7 is an exploded view of a first drive mechanism of the control valve of FIG. 2;
FIG. 8 is a partially exploded view (with the connecting shaft omitted) of the second drive mechanism in the control valve of FIG. 2;
fig. 9 is a cross-sectional view of the control valve shown in fig. 1.
The names and the numbers of the parts in the figure are respectively as follows:
valve body 20 and valve head 21 of housing 10
Commutating interface 211 common interface 212 valve cartridge seat 22
Sliding groove 221 and seat 222 connecting rod 223
Groove 231 guide groove 232 of rotor valve core 23
Stator 24 rotor wear part 25 drive shaft 26
Connecting column 261 bearing 262 spool bearing 263
Valve seat 27 bolt 271 seal 272
Plane bearing 28 elastic member 29 first driving assembly 30
First drive motor 31, first reduction mechanism 32, first gear box 321
First ring gear 322, first main planetary gear 323, first main planetary carrier 324
First secondary planet 325 first secondary planet carrier 326 second drive assembly 40
Second drive motor 41, second reduction mechanism 42, and second gear box 421
Second ring gear 422 second main planet gear 423 second main planet carrier 424
Second secondary planet gear 425 second secondary planet carrier 426 connecting shaft 427
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.
Referring to fig. 1 and 2, the present invention provides a control valve for switching fluid flow passages and controlling fluid flow, which includes a housing 10, a valve body 20 mounted at one end of the housing 10, and a first driving assembly 30 and a second driving assembly 40 mounted inside the housing 10. The fluid may be a liquid or a gas, or may be a gas-liquid mixture, and is not limited herein.
Referring to fig. 3 and 4, the valve body 20 includes a valve head 21, a valve core seat 22 rotatable relative to the valve head 21, and a rotor valve core 23 slidably mounted on the valve core seat 22, the valve head 21 is provided with a plurality of direction-changing interfaces 211, and the rotor valve core 23 is provided with a groove 231. When in use, the valve core seat 22 is rotated relative to the valve head 21, and the rotor valve core 23 can be driven to rotate together, so that the groove 231 is communicated with any reversing interface 211, and the function of switching fluid flow channels is realized; the sliding rotor valve core 23 can change the communication area of the groove 231 and the reversing interface 211, thereby realizing the function of controlling the fluid flow, meeting the use requirements of different occasions and having good use universality.
The valve head 21 is substantially cylindrical, a common port 212 is disposed at the center of the valve head 21 along the axial direction of the valve head 21, the plurality of direction changing ports 211 are uniformly distributed on the valve head 21 along the circumferential direction of the valve head 21, the direction changing ports 211 and the common port 212 both penetrate through two opposite end faces of the valve head 21, and the distance between the opening of the direction changing port 211 penetrating through the end face of the valve head 21 close to the valve core seat 22 and the opening of the common port 212 penetrating through the end face of the valve head 21 close to the end face of the valve core seat 22 is equal, wherein the direction changing ports 211 form a fluid outlet, the common port 212 forms a fluid inlet, when in use, fluid flows in through the common port 212, flows out through the direction changing port 211 after flowing through the groove 231, in addition, referring to fig. 9, the direction changing ports 211 are all obliquely disposed, and an included angle α is formed between the central axis of the direction changing ports 211 and the central axis of the common port.
The valve core seat 22 is substantially cylindrical, a sliding groove 221 is formed in an end surface of the valve core seat 22 close to the valve head 21, the sliding groove 221 is of a kidney-shaped structure, and a length direction of the sliding groove 221 is arranged along a radial direction of the valve core seat 22. The rotor valve core 23 is of a kidney-shaped structure, the rotor valve core 23 is matched with the sliding groove 221, and the length of the rotor valve core 23 is smaller than that of the sliding groove 221, so that the rotor valve core 23 can slide along the length direction of the sliding groove 221 and cannot rotate relative to the valve core seat 22. The groove 231 is opened on the end surface of the rotor valve core 23 close to the valve head 21, the length direction of the groove 231 and the length direction of the slide groove 221 are parallel to each other, and the groove 231 is arranged along the radial direction of the valve core seat 22.
In a particular embodiment, the valve body 20 further includes a stator 24 and a rotor wear member 25. The stator 24 is in a disc-shaped structure, the stator 24 is detachably and fixedly mounted at one end of the valve head 21, the rotor valve core 23 is attached to the stator 24 to form an attachment plane, the rotor valve core 23 can rotate relative to the stator 24, through holes are formed in the stator 24 corresponding to the reversing interface 211 and the common interface 212 and communicated with the corresponding reversing interface 211 or the common interface 212, namely, the reversing interface 211 and the common interface 212 are communicated with the attachment plane. In use, the grooves 231 communicate with the commutation ports 211 and the common port 212 through the through holes of the stator 24. The rotor wear-resistant part 25 is of a kidney-shaped structure, the rotor wear-resistant part 25 is installed in the sliding groove 221 in a matched mode, the rotor valve core 23 is attached to the rotor wear-resistant part 25, and the rotor valve core 23 can rotate relative to the rotor wear-resistant part 25. The stator 24 and the rotor wear-resistant part 25 are both made of wear-resistant materials, so that the rotor valve core 23 and the stator are prevented from being seriously worn when moving, the fluid tightness is ensured, and leakage is prevented. In the present embodiment, the stator 24 and the rotor wear-resistant member 25 are made of sapphire. Because the valve head 21 is provided with the stator 24, the stator 24 only needs to be ensured to have better wear resistance, and the production cost of the valve head 21 can be effectively reduced. In addition, when the stator 24 is seriously abraded, only the stator 24 needs to be replaced, and the production cost is further saved. Furthermore, the abutting surfaces of the stator 24 and the rotor valve core 23 are flat surfaces, compared with spherical contact surfaces, the flat surfaces are easier to process, the stator 24 and the rotor valve core 23 can be tightly abutted, and the condition of fluid leakage in the fluid reversing process is prevented.
In addition, the laminating plane of stator 24 and rotor case 23 is located between the opposite both ends face of valve head 21 and valve core seat 22, namely, the lower terminal surface protrusion of stator 24 sets up on the lower terminal surface of valve head 21, and the up end protrusion of rotor case 23 sets up on the up end of valve core seat 22, so, can guarantee that stator 24 and rotor case 23 contact all the time, avoid the two laminating inadequately, and then lead to the leakproofness to reduce. It should be understood that in other embodiments, not shown, the stator 24 and the rotor wear-resistant member 25 may be omitted, and in this case, both end surfaces of the rotor valve element 23 respectively abut against the end surface of the valve head 21 and the groove bottom wall of the sliding groove 221.
Referring to fig. 5 and 6, in a specific embodiment, the valve body 20 further includes a driving shaft 26, the driving shaft 26 is rotatably inserted into the valve core seat 22, a central axis of the driving shaft 26 is coaxial with a central axis of the valve core seat 22, and one end of the driving shaft 26 extends into the sliding groove 221. In addition, a guide groove 232 is formed in the end face, away from the valve head 21, of the rotor valve core 23, the guide groove 232 is of a kidney-shaped structure, and the length direction of the guide groove 232 is perpendicular to the length direction of the sliding groove 221. The end of the driving shaft 26 is provided with a connecting column 261 in a protruding manner along the axial direction of the driving shaft 26, the central axis of the connecting column 261 is staggered with the central axis of the driving shaft 26, a bearing 262 is mounted on the connecting column 261, and the bearing 262 is movably accommodated in the guide groove 232. Wherein the driving shaft 26 and the connecting column 261 together form an eccentric shaft, and the control valve further comprises a flow control mechanism, wherein the flow control mechanism comprises a valve core seat 22, a rotor valve core 23 and the eccentric shaft.
To ensure smooth rotation of the drive shaft 26 relative to the valve core housing 22, a valve core bearing 263 is installed between the drive shaft 26 and the valve core housing 22.
When the valve core is used, the driving shaft 26 rotates relative to the valve core seat 22 to drive the bearing 262 to rotate around the central axis of the driving shaft 26, and when the bearing 262 rotates to abut against any one of two opposite groove walls which are close to each other on the guide groove 232, the bearing 262 pushes the rotor valve core 23 to slide along the length direction of the sliding groove 221, so that the radial position of the groove 231 is adjusted; when the valve core seat 22 is rotated, the rotor valve core 23 is driven to rotate together, so as to adjust the circumferential position of the groove 231.
In this embodiment, by installing the bearing 262 on the connection column 261, when the rotor valve element 23 slides along the sliding groove 221 under the pushing action of the bearing 262, the outer ring of the bearing 262 rolls on the groove wall of the guide groove 232, so that the friction between the connection column 261 and the rotor valve element 23 is reduced, and the movement of the rotor valve element 23 is facilitated to be pushed. It will be appreciated that in other embodiments not shown, the bearing 262 may also be omitted, in which case the action of the sliding rotor spool 23 is effected by virtue of the urging action of the connecting post 261 against the groove wall of the guide groove 232.
In a specific embodiment, the valve body 20 further includes a valve seat 27, the valve seat 27 is substantially a sleeve-shaped structure with two ends penetrating, the valve head 21 is fixedly installed at one end of the valve seat 27, the valve seat 27 is sleeved outside the valve core seat 22, the valve core seat 22 is rotatable relative to the valve seat 27, and the other end of the valve seat 27 is fixedly connected with the housing 10. The valve head 21 and the valve seat 27 are fixedly connected by bolts 271, and a sealing member 272 is interposed between an outer wall of the valve core seat 22 and an inner wall of the valve seat 27 for improving the sealing performance, and it can be understood that the sealing member 272 is made of a sealing material such as silicone rubber or rubber.
In a specific embodiment, the valve body 20 further includes a flat bearing 28 and an elastic member 29, and the flat bearing 28 and the elastic member 29 are both housed inside the valve seat 27. Specifically, the valve core seat 22 includes a seat body 222 and a connecting rod 223 connected to each other, the seat body 222 and the connecting rod 223 are both cylindrical structures, a diameter of the seat body 222 is larger than a diameter of the connecting rod 223, the sliding groove 221 is opened on an end surface of the seat body 222 away from the connecting rod 223, and an abutting surface (not shown) is formed on the seat body 222 opposite to the end surface of the sliding groove 221. The plane bearing 28 is sleeved outside the connecting rod 223, the elastic member 29 is telescopically arranged between the plane bearing 28 and the abutting surface, so that one end of the elastic member 29 elastically abuts against the plane bearing, the other end of the elastic member 29 elastically abuts against one end surface of the plane bearing 28, and the other end surface of the plane bearing 28 abuts against the inner wall of one end of the valve seat 27 under the elastic action of the elastic member 29. When the valve core is installed in place, the elastic element 29 is compressed, and the elastic force acts on the valve core seat 22, so that the abutting surfaces of the rotor valve core 23 and the stator 24 are mutually attached, further sealing is achieved, and meanwhile, the smooth rotation of the valve core seat 22 relative to the valve seat 27 is guaranteed through the arrangement of the plane bearing 28.
In the present embodiment, the elastic member 29 is a disc spring sleeved outside the connecting rod 223, and it is understood that the elastic member 29 may also be a rigid and elastic element such as a stainless steel elastic sheet or a copper elastic sheet, which is not limited herein.
In a specific embodiment, the number of the commutation interfaces 211 is twelve, when the commutation interface 211 currently communicated with the groove 231 needs to be switched to the target commutation interface 211 without intersecting with other interfaces 211 between the two commutation interfaces 211, the rotor valve core 23 is slid to disconnect the groove 231 from the commutation interface 211, then the valve core seat 22 is rotated to enable the groove 231 to rotate to correspond to the target commutation interface 211, and finally the rotor valve core 23 is slid to enable the groove 231 to communicate with the target commutation interface 211, so that non-intersecting switching communication is realized, and the situation that when the commutation interface 211 is switched, the non-target commutation interface 211 is crossed with the groove 231 to cause fluid pollution is avoided. In addition, the communication area between the groove 231 and the commutation port 211 can be controlled by adjusting the sliding distance of the rotor core 23 along the sliding groove 221, so as to control the fluid flow. It will be appreciated that to achieve the switching function of commutation interface 211, there are at least three commutation interfaces 211.
In this embodiment, the groove 231 can communicate with only one of the commutation interfaces 211 at a time, and it is understood that, in other embodiments not shown, the groove 231 can communicate with a plurality of commutation interfaces 211 at a time, and the plurality of commutation interfaces 211 communicating with the groove 231 can be adjacent to each other or separated by other commutation interfaces 211, and the communication condition is determined by the shape of the groove 231, and is not limited herein.
Referring to fig. 7-9, the first driving assembly 30 is used for driving the valve core seat 22 to rotate relative to the valve head 21, and the second driving assembly 40 is used for driving the rotor valve core 23 to slide relative to the valve core seat 22.
The first driving assembly 30 comprises a first driving motor 31 and a first speed reducing mechanism 32, the first speed reducing mechanism 32 comprises a first gear box 321, a first gear ring 322, a first main planetary gear 323, a first main planet carrier 324, a first auxiliary planetary gear 325 and a first auxiliary planet carrier 326, wherein the first gear box 321 is fixedly arranged in the casing 10, the first gear ring 322 is fixedly arranged in the first gear box 321, the first main planetary gear 323 is arranged on the first main planet carrier 324, the first main planetary gear 323 is positioned between the first gear ring 322 and an output shaft of the first driving motor 31, the first main planetary gear 323 is meshed with the first gear ring 322 and a gear sleeved outside an output shaft of the first driving motor 31, the first auxiliary planetary gear 325 is arranged on the first auxiliary planet carrier 326, the first auxiliary planetary gear 325 is positioned between a central shaft of the first gear ring 322 and the first auxiliary planet carrier 326, the first auxiliary planetary gear 325 is meshed with the first gear ring 322 and a gear sleeved outside a central shaft of the first auxiliary planet carrier 326, the central shaft of the first sub carrier 326 is connected to the valve body seat 22. Specifically, the central shaft of the first secondary planet carrier 326 is sleeved outside the connecting rod 223, the first secondary planet carrier 326 is slidably inserted into the connecting rod 223, that is, the first secondary planet carrier 326 can drive the connecting rod 223 to rotate, and the connecting rod 223 can slide along the axial direction of the valve core seat 22 relative to the first secondary planet carrier 326, so that when the stator 24 is worn, the valve core seat 22 can move axially under the elastic force of the elastic member 29 to make the stator 24 and the rotor valve core 23 tightly fit each other.
During operation, first driving motor 31 rotates, drives first main planet wheel 323 and rotates to drive first main planet carrier 324 and rotate, and first auxiliary planet wheel 325 rotates under the drive of first main planet carrier 324, thereby drives first auxiliary planet carrier 326 and rotates, further drives valve core seat 22 and rotates, has realized the effect of second grade speed reduction. It will be appreciated that the first drive planet 323 serves as the power input for the first drive assembly 30, and the first secondary planet carrier 326 serves as the power output for the first drive assembly 30.
The second driving assembly 40 is located on the side of the first driving assembly 30 away from the valve body 20, the second driving assembly 40 includes a second driving motor 41 and a second speed reducing mechanism 42, the second speed reducing mechanism 42 includes a second gear box 421, a second gear ring 422, a second main planetary gear 423, a second main planet carrier 424, a second auxiliary planetary gear 425 and a second auxiliary planet carrier 426, wherein the second gear box 421 is fixedly installed in the housing 10, the second gear ring 422 is fixedly installed in the second gear box 421, the second main planetary gear 423 is installed on the second main planet carrier 424, the second main planetary gear 423 is located between the second gear ring 422 and an output shaft of the second driving motor 422, the second main planetary gear 423 is engaged with the second gear ring 422 and a gear which is sleeved outside the output shaft of the second driving motor 41, the second auxiliary planetary gear 425 is installed on the second auxiliary planet carrier 426, the second auxiliary planetary gear 425 is located outside a central shaft of the second gear ring 422 and the second auxiliary planet carrier 426, a connecting shaft 427 is connected to a central shaft of the second sub-carrier 426, and the connecting shaft 427 is rotatably inserted through the first drive unit 30 and connected to the drive shaft 26. In addition, in order to cooperate with the valve core seat 22 to move in the axial direction, the connecting shaft 427 and the driving shaft 26 are also slidably engaged, i.e., the connecting shaft 427 can drive the driving shaft 26 to rotate, and the driving shaft 26 can move in the axial direction relative to the connecting shaft 427.
The during operation, second driving motor 41 rotates, and drive second main planet wheel 423 rotates to drive second main planet carrier 424 and rotate, the vice planet wheel 425 of second rotates under the drive of second main planet carrier 424, thereby drives the vice planet carrier 426 of second and rotates, further makes drive shaft 26 rotate under the drive of connecting axle 427, finally makes rotor case 23 slide, and has realized the effect of second grade speed reduction. It will be appreciated that the second primary planet 423 serves as a power input for the second drive assembly 40 and the connecting shaft 427 serves as a power output for the second drive assembly 40.
It will be appreciated that in other embodiments, not shown, the first drive assembly 30 for driving the valve core housing 22 to rotate may also be a gear drive assembly, specifically, the gear drive assembly includes a gear disposed on one side of the valve core housing 22 and engaged with the outer peripheral surface of the valve core housing 22, or the first drive assembly 30 may also be a belt drive assembly including a belt sleeved outside the valve core housing 22 for driving the valve core housing 22 to rotate. In addition, the second driving assembly 40 for driving the rotor valve core 23 to slide can also be realized by means of an air cylinder, specifically, the air cylinder is installed on the valve core seat 22, the rotor valve core 23 is connected with the extending end of the air cylinder, and the telescopic action of the air cylinder drives the rotor valve core 23 to slide.
The control valve provided by the invention can realize the switching function of a fluid flow channel by rotating the valve core seat 22 relative to the valve head 21, can realize the function of controlling the fluid flow by sliding the rotor valve core 23 relative to the valve core seat 22, can realize the non-cross switching communication function by the joint action of the valve core seat 22 and the rotor valve core 23, has a compact structure, and avoids the occurrence of the condition of fluid pollution.
In light of the foregoing description of preferred embodiments in accordance with the invention, it is to be understood that numerous changes and modifications may be made by those skilled in the art without departing from the scope of the invention. The technical scope of the present invention is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A flow control mechanism characterized by: the flow control mechanism comprises a valve core seat, a rotor valve core and an eccentric shaft, wherein the rotor valve core is slidably arranged on the valve core seat, a groove is formed in the rotor valve core and used for communicating a fluid inlet and a fluid outlet, a guide groove is further formed in the rotor valve core, the eccentric shaft is rotatably inserted into the valve core seat in a penetrating mode, one end of the eccentric shaft is movably contained in the guide groove, and the eccentric shaft can be rotated to push the rotor valve core to slide, so that the communication area of the groove and the fluid outlet is changed.
2. The flow control mechanism of claim 1, wherein: the rotor valve core is connected with the sliding groove in a sliding mode, and the length direction of the guide groove is perpendicular to that of the sliding groove.
3. The flow control mechanism of claim 1, wherein: the eccentric shaft comprises a driving shaft and a connecting column, the connecting column is convexly arranged at the end part of the driving shaft, the central axis of the connecting column and the central axis of the driving shaft are arranged in a staggered mode, a bearing is installed on the connecting column, and the bearing is contained in the guide groove.
4. The flow control mechanism of claim 2, wherein: the length direction of the sliding groove is arranged along the radial direction of the valve core seat, the length direction of the groove is parallel to the length direction of the sliding groove, and the groove is arranged along the radial direction of the valve core seat.
5. The flow control mechanism of claim 3, wherein: and a valve core bearing is arranged between the driving shaft and the valve core seat.
6. The flow control mechanism of claim 2, wherein: and a rotor wear-resistant part is arranged in the sliding groove in a matched manner, and the rotor wear-resistant part is attached to the rotor valve core.
7. A control valve, characterized by: the control valve comprising a flow control mechanism as claimed in any one of claims 1 to 6.
8. The control valve of claim 7, wherein: the control valve further comprises a valve head, the rotor valve core is attached to the valve head, a reversing interface and a public interface are arranged on the valve head, the reversing interface, the public interface and the groove are all communicated with the attaching plane of the rotor valve core and the valve head, the reversing interface forms the fluid outlet, and the public interface forms the fluid inlet.
9. The control valve of claim 8, wherein: the control valve further comprises a valve seat, the valve head is installed at one end of the valve seat, and the valve seat is sleeved outside the valve core seat.
10. The control valve of claim 9, wherein: the control valve further comprises a shell and a second driving assembly, the valve seat is installed at one end of the shell, the second driving assembly is installed in the shell, and the second driving assembly drives the eccentric shaft to rotate.
CN201911356693.7A 2019-12-25 2019-12-25 Flow control mechanism and control valve Pending CN110925450A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021128928A1 (en) * 2019-12-25 2021-07-01 南京润泽流体控制设备有限公司 Fluid non-crossover switching valve
WO2022026876A1 (en) * 2020-07-31 2022-02-03 Donaldson Company, Inc. Valve arrangement, liquid filters, filter assemblies, and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021128928A1 (en) * 2019-12-25 2021-07-01 南京润泽流体控制设备有限公司 Fluid non-crossover switching valve
US11371625B2 (en) 2019-12-25 2022-06-28 Nanjing Runze Fluid Control Equipment Co., Ltd Fluid cross-free switching valve
WO2022026876A1 (en) * 2020-07-31 2022-02-03 Donaldson Company, Inc. Valve arrangement, liquid filters, filter assemblies, and method

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