CN112081978A - Control valve - Google Patents
Control valve Download PDFInfo
- Publication number
- CN112081978A CN112081978A CN201910516763.4A CN201910516763A CN112081978A CN 112081978 A CN112081978 A CN 112081978A CN 201910516763 A CN201910516763 A CN 201910516763A CN 112081978 A CN112081978 A CN 112081978A
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- CN
- China
- Prior art keywords
- valve
- ring portion
- fluid control
- outer ring
- valve seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
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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
- F16K5/06—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
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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
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Abstract
The invention provides a control valve, wherein a valve body component comprises a first sealing gasket, a second sealing gasket, a valve core and a first one-way fluid control component, in a valve closing state, the first sealing gasket is abutted against the valve core to form a first sealing part, the second sealing gasket is abutted against the valve core to form a second sealing part, a valve cavity of the control valve separated by the first sealing part and the second sealing part is an inner cavity, a first cavity is arranged between an inner ring part and an outer ring part of the first one-way fluid control component, a flow passage is arranged on the outer ring part and/or a base part and is communicated with the inner cavity and the first cavity, the valve body component comprises a first fluid port, a radial gap is formed between at least part of an elastic deformation part of the inner ring part and a first valve seat, and fluid can flow from the first fluid port to the inner cavity in a one-way through the radial. When the control valve is closed, the pressure of fluid on the two sides of the first sealing gasket tends to be balanced, the acting force of the first sealing gasket on the valve core is reduced, and the torque required by the valve rod driving the valve core to rotate when the valve is opened is reduced.
Description
Technical Field
The invention relates to the technical field of fluid control, in particular to a control valve.
Background
Fig. 1 is a schematic structural diagram of a control valve of the background art.
As shown in fig. 1, the control valve includes a valve body 01, a valve seat 02, a first connection pipe 03, a second connection pipe 04, a valve rod 05, and a valve core 06. The valve body 01 is fixedly connected with the valve seat 02, the valve body 01 is fixedly connected with the first connecting pipe 03, and the valve seat 02 is fixedly connected with the second connecting pipe 04. The valve core 06 can be driven to rotate by rotating the valve rod 05 to open and close the valve. In the control valve, a sealing member 07 is arranged between a valve core 06 and a valve body 01, and a sealing member 08 is arranged between the valve core 06 and a valve seat 02. When high-pressure fluid flows in from the first connecting pipe 03, the left side of the sealing element 07 is high-pressure, the right side of the sealing element 07 is low-pressure, differential pressure applied to the sealing element 07 acts on the valve core 06, and torque required by rotation of the valve core 06 driven by the valve rod 05 is increased, so that the valve opening performance of the control valve is affected.
In view of the above, how to improve the valve opening performance of the control valve provides an improvement to those skilled in the art.
Disclosure of Invention
The invention aims to provide a control valve which comprises a valve body component, wherein the valve body component comprises a valve body, a valve rod, a first valve seat, a second valve seat, a first sealing gasket, a second sealing gasket and a valve core, the valve body is fixedly connected with the first valve seat, the valve body is fixedly connected with the second valve seat, the valve core is positioned between the first valve seat and the second valve seat, and the valve rod can drive the valve core to rotate circumferentially;
the first sealing gasket is arranged between the first valve seat and the valve core, the second sealing gasket is arranged between the second valve seat and the valve core, the valve body component comprises a first sealing part and a second sealing part, the first sealing gasket is abutted against the valve core to form the first sealing part, the second sealing gasket is abutted against the valve core to form the second sealing part in the valve closing state of the control valve, and a valve cavity of the control valve separated by the first sealing part and the second sealing part is defined as an inner cavity;
the valve body component further comprises a first one-way fluid control component, the first one-way fluid control component is annular, one side of the first one-way fluid control component is abutted to the first sealing gasket, the other side of the first one-way fluid control component is abutted to the first valve seat, the first one-way fluid control component comprises a base portion, an inner ring portion and an outer ring portion, the inner ring portion extends axially from the circumferential inner edge of the base portion, the outer ring portion extends axially from the base portion, the inner ring portion and the outer ring portion are located on the same side of the base portion, the outer diameter of the inner ring portion is smaller than the inner diameter of the outer ring portion, a first cavity is formed between the inner ring portion and the outer ring portion, the outer ring portion and/or the base portion are/is provided with a circulation channel, and the circulation channel is communicated with the inner cavity and the first cavity, the valve body component comprises a first fluid port, the inner ring portion comprises an elastic deformation portion, the elastic deformation portion can deform towards the outer ring portion, a radial gap is formed between at least part of the elastic deformation portion and the first valve seat after deformation, and fluid can flow from the first fluid port to the inner cavity in a one-way mode through the radial gap.
The control valve provided by the invention comprises a valve body component, a first sealing gasket, a second sealing gasket, a valve core and a first one-way fluid control component, wherein the first sealing gasket is abutted against the valve core, the first sealing gasket is abutted with the valve core to form a first sealing portion, the second sealing gasket is abutted with the valve core to form a second sealing portion, a valve cavity of the control valve, isolated by the first sealing portion and the second sealing portion, is an inner cavity, the first one-way fluid control component comprises a base portion, an inner ring portion and an outer ring portion, a first cavity is arranged between the inner ring portion and the outer ring portion, a circulation channel is arranged on the outer ring portion and/or the base portion, the circulation channel is communicated with the inner cavity and the first cavity, the valve body component comprises a first fluid port, the inner ring portion comprises an elastic deformation portion, a radial gap is formed between at least part of the elastic deformation portion and the first valve seat, and fluid can flow in a one-way mode from the first fluid port to the inner cavity through. Compared with the prior art, when the control valve is closed, the pressure of fluid on the two sides of the first sealing gasket tends to be balanced, the acting force of the first sealing gasket on the valve core is reduced, the torque required by the valve rod driving the valve core to rotate when the valve is opened is reduced, and therefore the valve opening performance of the control valve is improved.
Drawings
FIG. 1: background art a schematic cross-sectional view of a control valve;
FIG. 2: the invention provides a cross-sectional schematic diagram of a control valve;
FIG. 3 a: i in FIG. 21A partially enlarged schematic view of (a);
FIG. 3 b: when the fluid is flowing in the forward direction I1Schematic representation of variations of (a);
FIG. 3 c: when the fluid flows in the reverse direction I1Schematic representation of variations of (a);
FIG. 4: fig. 2 is a schematic structural view of a first unidirectional fluid control component and a second unidirectional fluid control component;
FIG. 5: i in FIG. 42A partially enlarged schematic view of (a);
FIG. 6 a: fig. 1 is a schematic front view of the first gasket and the second gasket;
FIG. 6 b: fig. 1 is a schematic view of the first gasket and the second gasket in reverse structures.
In fig. 2 to 6 b:
1-valve body component, 10-valve cavity, 101-inner cavity;
11-valve body, 110-valve body lumen, 12-first valve seat, 120-first fluid port;
12 '-second valve seat, 120' -second fluid port;
121-first annular groove, 1210-radial gap, 1211-inner side wall;
1212-outer side wall, 1213-bottom wall, 13-valve stem, 14-valve core, 141-groove;
15-first seal, 15' -second seal, 151-spherical surface;
152-an annular boss, 1521-an inner annular wall, 16-a first one-way fluid control component;
16' -a second one-way fluid control component, 161-base, 162-inner ring portion;
1621-elastically deformable portion, 1622-recessed portion;
163-outer ring, 165-first cavity, 166-through slot, 167-connection;
17-a first sealing part, 17' -a second sealing part, a-a first connecting pipe, B-a second connecting pipe;
2-drive, 21-stator, 22-rotor;
3-gear reduction, 31-input gear, 32-output carrier.
Detailed Description
The core of the invention is to provide a control valve, and the first one-way fluid control part is arranged, so that the pressure of fluid on two sides of the first sealing gasket tends to be balanced, the acting force of the first sealing gasket on the valve core is reduced, the torque required by the valve rod driving the valve core to rotate when the valve is opened is reduced, and the valve opening performance of the control valve is improved.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
It should be noted that the terms "upper" and "lower" as used herein are defined in the drawings and the positions of the components in fig. 2 to 6b, respectively, only for the sake of clarity and convenience. It is to be understood that the directional terms used herein are not intended to limit the scope of the claims.
FIG. 2: the invention provides a cross-sectional schematic diagram of a control valve; FIG. 3 a: i in FIG. 21A partially enlarged schematic view of (a); FIG. 3 b: when the fluid is flowing in the forward direction I1Schematic representation of variations of (a); FIG. 3 a: when the fluid flows in the reverse direction I1Schematic representation of variations of (a); FIG. 4: fig. 2 is a schematic structural view of a first unidirectional fluid control component and a second unidirectional fluid control component; FIG. 5: the partial enlarged schematic view at I2 in fig. 4; FIG. 6 a: the front structures of the first sealing gasket and the second sealing gasket are shown in the figure 1; FIG. 6 b: fig. 1 is a schematic view of the first gasket and the second gasket in reverse structures.
As shown in fig. 2, 3a, and 3B, the valve body assembly 1 includes a valve body 11, a first valve seat 12, a second valve seat 12 ', a valve stem 13, a valve element 14, a first packing 15, a second packing 15', a first one-way fluid control assembly 16, a first connection pipe a, and a second connection pipe B. The valve body 11 is approximately hollow tubular, the first connecting pipe A is welded and fixed with the first valve seat 12, the first valve seat 12 is welded and fixed with one end of the valve body 11, the second connecting pipe B is welded and fixed with the second valve seat 12 ', and the second valve seat 12' is welded and fixed with the other end of the valve body 11. Of course, the first valve seat 12, the second valve seat 12' and the valve body 11 may be screwed together. The first valve seat 12 includes a first fluid port 120 and the second valve seat 12 'includes a second fluid port 120'. The valve element 14 is substantially spherical and is arranged in the valve chamber 10 of the control valve between the first valve seat 12 and the second valve seat 12'. The upper end of the valve rod 13 is connected with an output gear carrier 32 key groove of a gear reduction device 3, the output gear carrier 32 can drive the valve rod 13 to rotate, the lower end of the valve rod 13 extends into a groove 141 of the valve core 14 and is connected with the valve core 14 key groove, and the valve rod 13 can drive the valve core 14 to rotate in the circumferential direction. The first sealing gasket 15 is arranged between the first valve seat 12 and the valve core 14, and the first sealing gasket 15 is abutted against the valve core 14; the second gasket 15 ' is provided between the second valve seat 12 ' and the valve body 14, and the second gasket 15 ' abuts against the valve body 14. When the ball valve is in a valve closing state, the first sealing gasket 15 is abutted with the valve core 14 to form a first sealing part 17, and the second sealing gasket 15 ' is abutted with the valve core 14 to form a second sealing part 17 ', so that a space separated by the first sealing part 17 and the second sealing part 17 ' of the valve cavity 10 is defined as an inner cavity 101.
As shown in fig. 3, the first one-way fluid control member 16 has a ring shape, and is molded from a rubber material by means of a die. One side of the first one-way fluid control member 16 abuts against the first gasket 15, and the other side of the first one-way fluid control member 16 abuts against the first valve seat 12. The first one-way fluid control component 16 includes a base 161, an inner ring portion 162, and an outer ring portion 163, where the inner ring portion 162 is annular, the inner ring portion 162 extends axially from a circumferential inner edge of the base 161, the outer ring portion 163 extends axially from the base 161, an outer diameter of the inner ring portion 162 is smaller than an inner diameter of the outer ring portion 163, the inner ring portion 162 and the outer ring portion 163 are located on the same side of the base 161, and a first cavity 165 is provided between the inner ring portion 162 and the outer ring portion 163. The outer ring 163 and/or the base 161 are provided with a flow passage which communicates the inner chamber 101 with the first chamber 165. The inner ring portion 162 includes an elastic deformation portion 1621, the elastic deformation portion 1621 is deformable toward the outer ring portion 163 by the fluid pressure of the first fluid port 120, a radial gap 1210 is provided between at least a portion of the elastic deformation portion 1621 and the first valve seat 12 after the deformation, and the fluid can flow in one direction from the first fluid port 120 to the inner cavity 101 through the radial gap 1210.
In this embodiment, by providing the first unidirectional fluid control component 16, in the valve closing state, the elastic deformation portion 1621 can be deformed by the fluid in the first fluid port 120, a radial gap 1210 is formed between at least a part of the deformed elastic deformation portion and the first valve seat 12, the fluid can flow into the first cavity 165 through the radial gap 1210, and the fluid in the first cavity 165 flows into the inner cavity 101 through the flow passage, so that the fluid pressures on both sides of the first gasket 15 tend to be balanced, the acting force of the first gasket 15 on the valve element 14 is reduced, the torque required by the valve rod 13 to drive the valve element 14 to rotate when the valve is opened is reduced, and the valve opening performance of the control valve is improved.
Further, as shown in fig. 4 and 5, a groove portion 1622 is provided on the outer side in the circumferential direction of the elastically deformable portion 1621 of the inner ring portion 162, and the groove portion 1622 opens to the flow passage. The advantage is that the wall thickness of the elastic deformation part 1621 is reduced, so that the elastic deformation part is easier to deform under the action of fluid pressure.
Further, as shown in fig. 4 and 5, the first unidirectional fluid control component 16 further includes a connection portion 167 connecting the circumferential outer side wall of the inner ring portion 162 and the circumferential inner side wall of the outer ring portion 163, the number of the connection portions 167 is at least 2, the number of the elastic deformation portions 1621 is at least 2, and the connection portion 167 and the elastic deformation portions 1621 are arranged at an interval in the circumferential direction of the first unidirectional fluid control component 16. The connection portion 167 is provided at a distance from the elastic deformation portion 1621, which is advantageous in that the rigidity of the first unidirectional fluid control member 16 is increased. Meanwhile, when the control valve is assembled, the first valve seat 12 abuts against the first one-way fluid control component 16, the first one-way fluid control component 16 abuts against the first sealing gasket 15, the first sealing gasket 15 abuts against the valve core 14, and by increasing the rigidity of the first one-way fluid control component 16, the pre-tightening force between the first sealing gasket 15 and the valve core 14 can be increased, so that the sealing effect of the first sealing gasket 15 and the valve core 14 in a valve opening state is improved.
The flow passage is provided in the outer ring portion 163, and as shown in fig. 5, the flow passage penetrates the outer ring portion 163 in the axial direction of the first unidirectional fluid control member 16. In the circumferential direction of the first unidirectional fluid control member 16, the outer ring portion 163 corresponding to the elastic deformation portion 1621 is provided with a through groove 166, and the opening of the through groove 166 is located on the circumferential outer side wall 1631 of the outer ring portion 163, and in this embodiment, the through groove 166 serves as the flow passage. That is, the first chamber 165 is normally open to the inner chamber 101 through the through slot 166.
Further, as shown in fig. 2, 3b, 6a, and 6b, a first annular groove 121 is formed at an end of the first valve seat 12 close to the valve element 14, the first unidirectional fluid control member 16 is disposed in the first annular groove 121, the first annular groove 121 includes an inner sidewall 1211, an outer sidewall 1212, and a bottom wall 1213, and after the elastic deformation portion 1621 is deformed, a radial gap 1210 is formed between a front end of the inner ring 162 and the bottom wall 1213. The inner side wall of the first packing 15 is provided with a spherical surface 151, the spherical surface 151 is fitted to the outer surface of the valve element 14, the outer side wall of the first packing 15 is provided with an annular convex portion 152, and the annular convex portion 152 abuts against the first one-way fluid control member 16.
Still further, the inner diameter of the annular protrusion 152 is larger than the diameter of the inner sidewall 1211 of the first annular groove 121, the outer diameter of the annular protrusion 152 is smaller than the diameter of the outer sidewall 1212 of the first annular groove 121, the annular protrusion 152 partially extends into the first annular groove 121 of the first valve seat 12, and the length L of the annular protrusion 152 extending into the first annular groove 121 satisfies 0.5mm ≤ L ≤ 2 mm. In the operation process of the control valve, the valve core 14 can radially deflect under the pressure of fluid, and the first sealing gasket 15 can also radially displace along with the valve core 14, so that the annular convex part 152 is always in the first annular groove 121 in the radial displacement process of the first sealing gasket 15, and the risk that the first one-way fluid control component 16 is extruded out of the gap between the first sealing gasket 15 and the first valve seat 12 under the action of the fluid pressure is reduced.
As shown in fig. 2, the valve body 11 is substantially tubular, the valve body 11 is made of stainless steel pipe, or the valve body 11 may be made of stainless steel pipe by crimping and welding the stainless steel plate, and then the valve body 11 is made of the welded pipe, the first valve seat 12 and the second valve seat 12 ' are made of stainless steel material by turning, the first valve seat 12 and the second valve seat 12 ' are at least partially disposed in the valve body inner cavity 110, and the first valve seat 12 and the second valve seat 12 ' are fixed to the valve body 11 by welding. The first valve seat 12 and the first connecting pipe A are fixed by welding, and the second valve seat 12' and the second connecting pipe B are fixed by welding. In the present embodiment, the inner ring portion 162 and the outer ring portion 163 of the first one-way fluid control member 16 extend in the axial direction of the first one-way fluid control member 16 and toward the first connection pipe a. Due to the thin wall thickness of the inner ring portion 162, it is ensured that the inner ring portion 162 is not extruded from between the inner ring wall 1521 of the annular protrusion portion 152 and the inner side wall 1211 of the first annular groove 121 under the action of the fluid pressure.
In this embodiment, as shown in fig. 2, the valve body member 1 further includes a second one-way fluid control member 16 ', the second packing 15 ' abuts the second one-way fluid control member 16 ', and the second one-way fluid control member 16 ' abuts the second valve seat 12 '. The second gasket 15 'has the same structure as the first gasket 15, and the second one-way fluid control member 16' has the same structure as the first one-way fluid control member 16. With this arrangement, the first unidirectional fluid control component 16 and the second unidirectional fluid control component 16' can perform a unidirectional communication function regardless of the inflow of the high-pressure fluid from the first connection pipe a or the second connection pipe B.
As shown in fig. 2, 3B and 3c, it is defined that the high-pressure fluid flows in a forward direction from the first connecting pipe a and flows in a reverse direction from the second connecting pipe B. The following description will be given taking the forward inflow of the high-pressure fluid as an example. As shown in fig. 3b, after the high-pressure fluid flows in from the first connection pipe a, the high-pressure fluid passes through the first fluid port 120, and then enters the gap between the inner ring portion 162 and the inner sidewall 1211 of the first annular groove 121 from between the inner ring wall 1521 of the annular protrusion portion 152 and the inner sidewall 1211 of the first annular groove 121, under the action of the high-pressure fluid, the elastic deformation portion 1621 deforms toward the outer ring portion 163, the elastic deformation portion 1621 deforms to generate a radial gap 1210, and the high-pressure fluid enters the first cavity 165 through the radial gap 1210 and flows into the inner cavity 101 through the through groove 166. Since the second one-way fluid control member 16 'has the same structure as the first one-way fluid control member 16, the inner ring portion 162' of the second one-way fluid control member 16 'is tightly attached to the second valve seat 12' under the action of the high-pressure fluid, so that the high-pressure fluid does not enter the second fluid port 120 'of the second valve seat 12' and does not flow out of the second connection pipe B. In the reverse direction, after the high-pressure fluid flows in from the second connection tube B, the high-pressure fluid flows into the inner cavity 101 through the second fluid port 120 ' by the deformation of the inner ring portion 162 ' of the second one-way fluid control member 16 ', and as shown in fig. 3c, under the action of the high-pressure fluid, the inner ring portion 162 of the first one-way fluid control member 16 is tightly attached to the inner sidewall 1211 of the first annular groove 121, and the high-pressure fluid does not enter the first fluid port 120. That is, the first unidirectional fluid control member 16 and the second unidirectional fluid control member 16' function to conduct in one direction. Therefore, in a valve closing state, the two sides of the sealing gasket on the high pressure side tend to be balanced by the pressure of fluid regardless of the forward direction or the reverse direction, the acting force of the sealing gasket on the high pressure side on the valve core 14 is reduced, the torque required by the valve rod 13 driving the valve core 14 to rotate in a valve opening process is reduced, and the valve opening performance of the control valve can be improved.
Further, the second unidirectional fluid control member 16 ' is oriented opposite to the first unidirectional fluid control member 16, i.e., the inner ring portion 162 ' and the outer ring portion 163 ' of the second unidirectional fluid control member 16 ' extend in the axial direction of the second unidirectional fluid control member 16 ' and toward the second nipple B. The advantageous effects of such an arrangement are the same as those of the first unidirectional fluid control member 16, and will not be described in detail herein.
The control valve in this embodiment may be an electrically controlled valve. The electric control valve includes a drive device 2 and a gear reduction mechanism 3 in addition to the valve body unit 1 described in the above embodiment. The drive device 2 includes a stator portion 21 and a rotor portion 22, and the rotor portion 22 can be driven to rotate circumferentially by energizing the stator portion 21. The gear reduction mechanism 3 includes an input gear 31 and an output gear carrier 32, the rotor part 22 can drive the input gear 31 to rotate, the rotation of the input gear 31 is transmitted to the output gear carrier 32, and the output gear carrier 32 is driven to rotate. Because the output gear carrier 32 is matched with the key groove of the valve rod 13, the output gear carrier 32 can drive the valve rod 13 to rotate, the valve rod 13 is matched with the key groove of the valve core 14, and the valve rod 13 can drive the valve core 14 to rotate, so that the valve opening, valve closing and flow regulation functions of the electric control valve are realized.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A control valve comprises a valve body component, wherein the valve body component comprises a valve body, a valve rod, a first valve seat, a second valve seat, a first sealing gasket, a second sealing gasket and a valve core, the valve body is fixedly connected with the first valve seat, the valve body is fixedly connected with the second valve seat, the valve core is positioned between the first valve seat and the second valve seat, and the valve rod can drive the valve core to rotate circumferentially;
the valve body component comprises a first sealing part and a second sealing part, the first sealing gasket is abutted with the valve core to form the first sealing part, the second sealing gasket is abutted with the valve core to form the second sealing part in a valve closing state of the control valve, and a valve cavity of the control valve separated by the first sealing part and the second sealing part is defined as an inner cavity;
the valve body component further comprises a first one-way fluid control component, the first one-way fluid control component is annular, one side of the first one-way fluid control component is abutted to the first sealing gasket, the other side of the first one-way fluid control component is abutted to the first valve seat, the first one-way fluid control component comprises a base portion, an inner ring portion and an outer ring portion, the inner ring portion extends axially from the circumferential inner edge of the base portion, the outer ring portion extends axially from the base portion, the inner ring portion and the outer ring portion are located on the same side of the base portion, the outer diameter of the inner ring portion is smaller than the inner diameter of the outer ring portion, a first cavity is formed between the inner ring portion and the outer ring portion, the outer ring portion and/or the base portion are provided with a circulation channel, the circulation channel is communicated with the inner cavity and the first cavity, and the valve body component comprises a first fluid port, the inner ring portion comprises an elastic deformation portion, the elastic deformation portion can deform towards the outer ring portion, a radial gap is formed between at least part of the elastic deformation portion and the first valve seat after deformation, and fluid can flow from the first fluid port to the inner cavity in a one-way mode through the radial gap.
2. The control valve according to claim 1, wherein a circumferentially outer side of the elastically deforming portion is provided with a groove portion, an opening of which is directed toward the flow passage.
3. The control valve according to claim 1, wherein the first unidirectional fluid control member further includes a connecting portion that connects a circumferential outer sidewall of the inner ring portion and a circumferential inner sidewall of the outer ring portion, the number of the connecting portion is at least 2, the number of the elastic deformation portions is at least 2, and the connecting portion and the elastic deformation portions are provided at a circumferential interval of the first unidirectional fluid control member.
4. The control valve of claim 1, wherein the flow passage is defined in the outer ring portion, the flow passage extending axially through the outer ring portion.
5. The control valve according to claim 4, wherein, in a circumferential direction of the first unidirectional fluid control member, the outer ring portion corresponding to the elastically deformable portion is provided with a through groove, an opening of the through groove is located at a circumferential outer side wall of the outer ring portion, and the through groove serves as the flow passage.
6. The control valve according to any one of claims 1 to 5, wherein an end of the first valve seat adjacent to the valve element is provided with a first annular groove, the first unidirectional fluid control member is disposed in the first annular groove, an inner side wall of the first packing is provided with a spherical surface, the spherical surface is engaged with an outer surface of the valve element, and an outer side wall of the first packing is provided with an annular convex portion, and the annular convex portion abuts against the first unidirectional fluid control member.
7. The control valve of claim 6, wherein an inner diameter of the annular protrusion is larger than a diameter of an inner side wall of the first annular groove, an outer diameter of the annular protrusion is smaller than a diameter of an outer side wall of the first annular groove, the annular protrusion partially protrudes into the first annular groove, and a length L of the annular protrusion protruding into the first annular groove satisfies 0.5mm L2 mm.
8. A control valve according to any of claims 1-5, characterized in that the valve body is substantially tubular, that the first valve seat is at least partly arranged in the inner cavity of the valve body, and that the valve body part further comprises a first nipple fixedly connected to the first valve seat, and that the inner ring part and the outer ring part extend towards the first nipple.
9. The control valve according to any one of claims 1 to 5, wherein the valve body member further includes a second one-way fluid control member and a second connection pipe, the second valve seat is fixedly connected to the second connection pipe, the second gasket abuts against the second one-way fluid control member, the second one-way fluid control member has the same structure as the first one-way fluid control member, an inner ring portion and an outer ring portion of the second one-way fluid control member extend toward the second connection pipe, and the first one-way fluid control member and the second one-way fluid control member are molded from a rubber material.
10. A control valve according to any one of claims 1 to 5 wherein the control valve is an electrically operated control valve and further comprising drive means and gear reduction means, the drive means comprising a stator part and a rotor part, the gear reduction means comprising an input gear and an output gear carrier, the valve stem being in splined engagement with the output gear carrier, the stator part being able to drive the rotor part to rotate when energised, the rotor part being able to drive the input gear to rotate, the input gear being able to drive the output gear carrier to rotate, the output gear carrier being able to drive the valve stem to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516763.4A CN112081978B (en) | 2019-06-14 | 2019-06-14 | Control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516763.4A CN112081978B (en) | 2019-06-14 | 2019-06-14 | Control valve |
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| Publication Number | Publication Date |
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| CN112081978A true CN112081978A (en) | 2020-12-15 |
| CN112081978B CN112081978B (en) | 2022-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910516763.4A Active CN112081978B (en) | 2019-06-14 | 2019-06-14 | Control valve |
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| CN (1) | CN112081978B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022206647A1 (en) * | 2021-03-31 | 2022-10-06 | 浙江三花汽车零部件有限公司 | Fluid control assembly and fabrication method therefor |
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| CN208651778U (en) * | 2018-07-17 | 2019-03-26 | 浙江三花制冷集团有限公司 | A kind of motor-driven valve |
| CN208719420U (en) * | 2018-08-13 | 2019-04-09 | 温州胜涨阀门有限公司 | Self-compensating ball valve |
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| GB2092712A (en) * | 1981-02-10 | 1982-08-18 | Appliance Components Ltd | A motor driven control valve |
| JP2005048853A (en) * | 2003-07-28 | 2005-02-24 | Kitz Corp | Ball valve |
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| WO2022206647A1 (en) * | 2021-03-31 | 2022-10-06 | 浙江三花汽车零部件有限公司 | Fluid control assembly and fabrication method therefor |
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|---|---|
| CN112081978B (en) | 2022-10-18 |
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