Flow regulating valve

Abstract

The utility model provides a flow regulating valve, which comprises a valve body, a flow regulating valve, a flow regulating valve and a flow regulating valve, each valve cavity is correspondingly and rotatably provided with one valve plate assembly, and the valve plate assemblies are used for opening or closing the valve cavities; the driving assembly is arranged on the valve body, the transmission structure is arranged between the driving assembly and the valve plate assemblies, the transmission structure is provided with two transmission sections which are arranged in a spaced mode, an included angle is formed between the extension directions of the two transmission sections, and the two transmission sections and the two valve plate assemblies are arranged in a one-to-one correspondence mode; the driving assembly is in driving connection with the two transmission sections, the transmission sections are in driving connection with the valve plate assemblies, and the driving assembly can drive the two valve plate assemblies to relatively rotate in the opposite directions so as to adjust the flow amount of fluid in the valve cavity. By means of the technical scheme, the problems that when an existing adjusting valve adjusts flow, adjusted airflow is unstable, and adjusting performance is poor can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flow regulation technical field, specifically, relate to a flow regulating valve. BACKGROUND

[0002] At present, regulating valve is arranged in the ventilation system pipeline to regulate the fluid flow in the pipeline to adapt to the demand of fluid flow in the pipeline. This kind of valve plays a great role in regulating and blocking system flow.

[0003] In the ventilation system pipeline, especially under the condition of large air volume rating, the regulating valve known to the inventor is mostly parallel regulating valve, that is, the opening direction of all blades of the regulating valve is same, and flow regulation is realized by rotating blades at different angles. But parallel regulating valve often has the defects of large noise, pressure loss and the like when small air volume demand, that is, small angle regulation, and has poor regulating performance, leading to unstable airflow. UTILITARY MODEL CONTENTS

[0004] The utility model provides a flow regulating valve to solve the above -mentioned problems existing in prior art regulating valve.

[0005] The utility model provides a flow regulating valve, flow regulating valve includes: valve body has two interval arrangement's valve cavity, valve cavity is used for fluid flow, two valve plate assemblies, each valve cavity corresponds rotatablely arranged with a valve plate assembly, the rotation axis of valve plate assembly extends along the length direction of valve plate assembly, and perpendicular to the flow direction of fluid, valve plate assembly is used for leading through or blocking valve cavity, drive assembly and transmission structure, drive assembly sets up on valve body, transmission structure sets up between drive assembly and valve plate assembly, transmission structure has two interval arrangement's transmission section, the extension direction of two transmission sections has the included angle, two transmission sections and two valve plate assemblies are set up one to one, drive assembly is respectively connected with two transmission sections drive, transmission section is connected with valve plate assembly drive, drive assembly can drive two valve plate assemblies relatively rotate towards the opposite direction to regulate the flow capacity of fluid in valve cavity.

[0006] The technical scheme of the utility model, through changing the extension direction between two transmission sections, makes two valve plate assemblies rotate towards opposite directions, so that the two valve plate assemblies rotate in a split type to realize the opening and closing of the valve body. In the ventilation system, the airflow is often unstable, compared with the opening and closing mode of the existing technology that the actuator drives the blades to rotate in parallel, the above design of the application has an equal percentage flow characteristic curve, that is, the split fluid is relatively uniform, which can avoid the split fluid after the valve plate assembly from being guided to one side of the ventilation pipeline. In this way, the flow rate of the fluid downstream of the valve body is more uniform, thereby improving the stability of the split fluid of the regulating valve, reducing the possibility of fluid deflection, thereby avoiding noise and pressure loss caused by uneven fluid, improving the regulating performance and adaptability of the regulating valve to fluid, so that it can also stably regulate fluid in the case of large flow and unstable flow change. At the same time, the above design also enables the regulating valve to support bidirectional flow of fluid, that is, forward flow or reverse flow of fluid, instead of only unidirectional flow and control. And such arrangement does not need to consider the forward installation or reverse installation of the flow valve, reduces the possibility of installation error, and improves the convenience of valve body assembly.

[0007] Further, the transmission structure includes a transmission rod and two connecting rods, the two connecting rods are respectively arranged at two ends of the transmission rod, one end of the connecting rod is hingedly connected with the transmission rod, the other end of the connecting rod is synchronously rotated with the valve plate assembly, the extension directions of the two connecting rods have an included angle, the connecting rod forms the transmission section, the output shaft of the driving assembly is drivingly connected with one of the valve plate assemblies, and the extension direction of the output shaft is the same as the rotation axis of the valve plate assembly. The transmission structure is designed as the mutual cooperation of the transmission rod and the connecting rod, the driving force can be transmitted to the transmission structure along the most direct path, the loss in the force transmission process is reduced, the linear force transmission path improves the transmission efficiency, and the accuracy and stability of the rotation of the valve plate assembly are ensured.

[0008] Further, the flow regulating valve further includes a sealing element, the sealing element is arranged on the valve plate assembly along the edge of the valve plate assembly, the sealing element is used for abutting against the inner side wall of the valve body, and the sealing element cooperates with the valve plate assembly to block the valve cavity. This design ensures that the valve body can maintain good sealing effect even under high pressure or harsh working conditions, effectively blocks the leakage of fluid in the valve cavity. The sealing performance when the valve cavity is closed is improved.

[0009] Further, the valve plate assembly comprises a first valve plate and a second valve plate arranged in parallel, the first valve plate has the same extending direction as the valve plate assembly, the sealing member is arranged between the first valve plate and the second valve plate, and the projections of the edges of the first valve plate and the second valve plate along the thickness direction of the valve plate assembly are located on the sealing member. In this way, the connection stability of the sealing member and the valve plate assembly is improved, and the sealing member can be uniformly stressed when the valve 10 is closed, so that the leakage problem caused by the position deviation or relaxation of the sealing member is avoided, and the zero leakage performance of the valve is ensured.

[0010] Further, the flow regulating valve further comprises two rotating shafts arranged in parallel, the rotating shafts are rotatably arranged in the valve cavity, the extending direction of the rotating shafts is the same as the extending direction of the rotating shafts, the rotating shafts are connected with the valve plate assemblies through the fastening pins, and the two rotating shafts are arranged in one-to-one correspondence with the two valve plate assemblies. The arrangement of the rotating shafts not only ensures the flexibility of the rotation of the valve plate assemblies, but also enables the valve plate assemblies to remain stable when subjected to high-pressure fluid impact, thereby avoiding deformation or damage of the valve plate assemblies caused by excessive pressure and prolonging the service life of the valve plate assemblies.

[0011] Further, the projection of the part of the first valve plate located on one side of the rotating shaft along the thickness direction of the valve plate assembly is located on the second valve plate, and the projection of the part of the second valve plate located on the other side of the rotating shaft along the thickness direction of the valve plate assembly is located on the first valve plate. Through the above arrangement, the first valve plate or the second valve plate can provide a pushing force to the sealing member when the valve body is opened, so that the valve plate assembly 20 is easier to rotate in the forward or reverse direction, and the response speed of the valve body 10 when opening or closing is improved.

[0012] Further, the sealing member has an annular structure. In this way, the sealing member is arranged only at the edge positions of the first valve plate and the second valve plate, and the middle parts of the first valve plate and the second valve plate have a hollow structure, which can reduce the material usage of the sealing member, avoid material waste, and save production costs.

[0013] Further, the compression amount of the sealing member is L, and 2mm≤L≤4mm. By controlling the compression amount of the sealing member, the frictional resistance when the valve plate assembly rotates can be reduced while the sealing effect is ensured, and the response speed of the valve body and the smoothness of the operation are improved.

[0014] Further, an axle sleeve is arranged on the valve plate assembly and extends along the thickness direction of the valve plate assembly, a through hole is arranged on the rotating shaft and corresponds to the axle sleeve, and the axle sleeve and the through hole are matched with each other through the fastening pin to fix the relative positions of the valve plate assembly and the rotating shaft. The above arrangement is simple in structure and facilitates the installation and disassembly of the valve plate assembly and the rotating shaft. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings constituting a part of the specification of the application serve to provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 A structural schematic view of a flow regulating valve provided by an embodiment of the present application is shown;

[0017] Figure 2 A partial side view of a flow regulating valve provided by an embodiment of the present application is shown;

[0018] Figure 3 A partial cross-sectional view in the B-B direction is shown; Figure 1

[0019] A partial cross-sectional view in the C-C direction is shown; Figure 4 Figure 3 A local enlarged view at C is shown;

[0020] Figure 5 An opening schematic view of a flow regulating valve provided by an embodiment of the present application is shown;

[0021] Figure 6 A structural schematic view of a sealing member provided by an embodiment of the present application is shown.

[0022] Among the above drawings, the following reference signs are included:

[0023] 10, valve body; 101, valve cavity;

[0024] 20, valve plate assembly; 21, first valve plate; 22, second valve plate;

[0025] 30, driving assembly;

[0026] 40, transmission structure; 41, transmission rod; 42, connecting rod;

[0027] 50, sealing member; 60, rotating shaft; 70, fastener. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] As​Figures 1 to 6 The utility model discloses a flow regulating valve, flow regulating valve includes: valve body 10, valve plate assembly 20, drive assembly 30 and transmission structure 40. Wherein, valve body 10 has two interval settings valve cavity 101, and valve cavity 101 is used for fluid flow. Every valve cavity 101 corresponds rotatably arranged with a valve plate assembly 20, and the rotation axis of valve plate assembly 20 extends along the length direction of valve plate assembly 20, and perpendicular to the flow direction of fluid, and valve plate assembly 20 is used for the conduction or block valve cavity 101. Drive assembly 30 is arranged on valve body 10, and transmission structure 40 is arranged between drive assembly 30 and valve plate assembly 20, and transmission structure 40 has two interval settings transmission section, and the extension direction of two transmission sections has the included angle, and two transmission sections and two valve plate assemblies 20 are arranged one by one, and drive assembly 30 is driven to connect respectively with two transmission sections, and transmission section is driven to connect with valve plate assembly 20, and drive assembly 30 can drive two valve plate assemblies 20 relative rotation towards opposite directions to adjust the flow of fluid in valve cavity 101.

[0030] The utility model discloses a technical scheme, through changing the extension direction between two transmission sections, make two valve plate assemblies 20 rotate towards opposite directions, so two valve plate assemblies 20 are opened to realize the opening and closing of valve body 10 through the rotation of opposite sides. In the ventilation system, the airflow is often unstable, compared with the opening and closing mode that executor drives the parallel rotation of blade in the prior art, the above-mentioned design of the application is equal percentage flow characteristic, that is, the fluid after shunting is relatively uniform, which can avoid the fluid after valve plate assembly 20 being guided to shunt to one side of the ventilation pipeline. So that the flow rate of fluid at the downstream of valve body 10 is more uniform, thereby improving the stability of the fluid after being shunted by the regulating valve, reducing the possibility of fluid bias, thereby avoiding the noise and pressure loss caused by uneven fluid, improving the regulating performance and adaptability of the regulating valve to fluid, so that it can also stably regulate the fluid in the case of large flow and unstable flow change. At the same time, the above-mentioned design also enables the regulating valve to support the bidirectional flow of fluid, that is, the forward flow or reverse flow of fluid, instead of only unidirectional flow and control. And such setting does not need to consider the problem of forward installation or reverse installation of the flow valve, reduces the possibility of installation error, and improves the convenience of valve body assembly.

[0031] In the embodiment, the specific structure of transmission structure 40 and the type of drive assembly 30 are not limited, transmission structure 40 can be a gear assembly or a connecting rod mechanism, and drive assembly 30 can be motor-driven or hand-driven.

[0032] In the application, the included angle between the two transmission sections is not limited, and the two valve plate assemblies 20 can be driven to rotate towards opposite directions. Drive assembly 30 can be motor-driven or hand-driven.

[0033] Specifically, the transmission structure 40 comprises a transmission rod 41 and two connecting rods 42, the two connecting rods 42 are respectively arranged at two ends of the transmission rod 41, and the two connecting rods 42 are respectively arranged in one-to-one correspondence with the adjacent two valve plate assemblies 20, one end of the connecting rod 42 is hingedly connected with the transmission rod 41, and the other end of the connecting rod 42 is synchronously rotated with the valve plate assembly 20, the extension directions of the two connecting rods 42 have an included angle, and the connecting rod 42 forms a transmission section. Compared with the two rotary arms of the prior art which are arranged in parallel at two ends of the connecting rod, the above-mentioned design of the present application can make the adjacent valve plate assemblies 20 rotate in different directions, thereby improving the flexibility of opening and closing of the valve body 10. The output shaft of the driving assembly 30 is drivingly connected with one of the valve plate assemblies 20, and the extension direction of the output shaft is the same as the rotation axis. The transmission structure 40 is designed as the mutual cooperation of the transmission rod 41 and the connecting rod 42, the driving force can be transmitted to the transmission structure 40 along the most direct path, thereby reducing the loss in the process of force transmission. Such linear force transmission path improves the transmission efficiency and ensures the accuracy and stability of the rotation of the valve plate assembly 20. Moreover, the above-mentioned design can also be flexibly adapted to various driving assemblies 30. Whether it is electrically driven or manually driven, effective force transmission and flow control can be achieved through the transmission structure 40, thereby enhancing the adaptability of the regulating valve in different operating environments.

[0034] As shown in Figure 2 , in the present embodiment, the included angle between the two connecting rods 42 is 90° and is symmetrically arranged along the width direction of the valve body 10, so as to facilitate the assembly of the two connecting rods 42 and the valve plate assembly 20. In the present application, the arrow directions in the figure are all the movement directions of the assemblies.

[0035] As shown in Figures 3 to 6 , the flow regulating valve further comprises a sealing member 50, which is arranged on the valve plate assembly 20 along the edge of the valve plate assembly 20 and is used to abut against the inner side wall of the valve body 10. The sealing member 50 cooperates with the valve plate assembly 20 to block the valve cavity 101. This design ensures that the valve body 10 can maintain good sealing effect even under high pressure or harsh working conditions, effectively blocking the leakage of fluid in the valve cavity 101. The sealing performance of the valve cavity 101 when closed is improved. Compared with the design of the prior art in which the sealing ring is arranged on the valve seat, the present application cancels the valve seat and arranges the sealing member 50 on the valve plate assembly 20, so as to not only increase the flow area of the fluid and improve the flow rate of the fluid, but also change the sealing structure of the valve body 10. When the valve body 10 is closed, only the interference fit between the sealing member 50 and the inner side wall of the valve body 10 is needed to achieve the blocking of the valve cavity 101, greatly simplifying the opening and closing process of the valve body 10.

[0036] Specifically, the valve plate assembly 20 comprises a first valve plate 21 and a second valve plate 22 arranged in parallel, the extension direction of the first valve plate 21 is the same as the extension direction of the valve plate assembly 20, and the arrangement of the first valve plate 21 and the second valve plate 22 provides lateral support for the valve plate assembly 20, improves the ability to resist external pressure and internal fluid impact, and ensures structural stability under high pressure and high flow rate conditions. The sealing element 50 is arranged between the first valve plate 21 and the second valve plate 22, and the projections of the edges of the first valve plate 21 and the second valve plate 22 along the thickness direction of the valve plate assembly 20 are located on the sealing element 50. This not only strengthens the connection stability of the sealing element 50 and the valve plate assembly 20, but also enables the sealing element 50 to be uniformly stressed when the valve body 10 is closed, avoiding leakage problems caused by position deviation or relaxation of the sealing element 50, and ensuring zero leakage performance of the valve body 10. The valve plate assembly 20 extends along the length direction of the valve body 10.

[0037] The sealing element 50 is fixedly connected with the first valve plate 21 and the second valve plate 22 by the fastener 70, which facilitates disassembly.

[0038] As shown in Figure 5 The flow regulating valve further comprises two spaced-apart rotating shafts 60 rotatably arranged in the valve cavity 101, the extension direction of the rotating shaft 60 is the same as the extension direction of the rotating axis of the valve plate assembly 20, the rotating shaft 60 is connected with the valve plate assembly 20 through a fastening pin, and the two rotating shafts 60 are arranged in one-to-one correspondence with the two valve plate assemblies 20. The arrangement of the rotating shaft 60 not only ensures the flexibility of the rotation of the valve plate assembly 20, but also enables the valve plate assembly 20 to remain stable when subjected to high-pressure fluid impact, avoiding deformation or damage of the valve plate assembly 20 caused by excessive pressure, and prolonging the service life of the valve plate assembly 20.

[0039] Further, the valve plate assembly 20 is provided with a shaft sleeve extending along the thickness direction of the valve plate assembly 20, and the rotating shaft 60 is provided with a through hole corresponding to the shaft sleeve, the shaft sleeve and the through hole cooperate with each other through a fastening pin to fix the relative position of the valve plate assembly 20 and the rotating shaft 60. The above arrangement is simple in structure and facilitates the installation and disassembly of the valve plate assembly 20 and the rotating shaft 60.

[0040] In the present application, the output shaft of the drive assembly 30 is connected with one of the rotating shafts 60 through a spline, the output shaft of the drive assembly 30 is rotatably connected with the valve body 10 through a bearing assembly, and the end portions of the rotating shafts 60 are rotatably connected with the valve body 10 through bearing assemblies, which can improve the smoothness of the rotation of the rotating shaft 60 and avoid the rotation of the valve plate assembly 20 from being stuck or delayed.

[0041] As shown in Figure 3 and Figure 4As shown, the projection of the portion of the first valve plate 21 on the side of the rotation shaft 60 along the thickness direction of the valve plate assembly 20 is on the second valve plate 22, that is, the length of the portion of the second valve plate 22 on the side of the rotation shaft 60 along the extension direction of the valve plate assembly 20 is longer than the length of the portion of the first valve plate 21 on the side of the rotation shaft 60 along the extension direction of the valve plate assembly 20, and the resistance to be overcome during rotation is greater. Therefore, when the valve plate assembly 20 rotates towards the side where the first valve plate 21 is located, the resistance to be overcome is smaller, and a relatively smaller driving force can make the valve plate assembly 20 rotate towards the side where the first valve plate 21 is located, and the second valve plate 22 can also provide a pushing force to the sealing element 50 to make the sealing element 50 separate from the inner side wall of the valve body 10 as soon as possible, thereby improving the response speed of the valve plate assembly 20. The projection of the portion of the second valve plate 22 on the other side of the rotation shaft 60 along the thickness direction of the valve plate assembly 20 is on the first valve plate 21. That is, the length of the portion of the first valve plate 21 on the other side of the rotation shaft 60 along the extension direction of the valve plate assembly 20 is longer than the length of the portion of the second valve plate 22 on the other side of the rotation shaft 60 along the extension direction of the valve plate assembly 20, and the resistance to be overcome during rotation is greater. Therefore, when the valve plate assembly 20 rotates towards the side where the second valve plate 22 is located, the resistance to be overcome is smaller, and a relatively smaller driving force can make the valve plate assembly 20 rotate towards the side where the second valve plate 22 is located, and the first valve plate 21 can also provide a pushing force to the sealing element 50 to make the sealing element 50 separate from the inner side wall of the valve body 10 as soon as possible, thereby improving the response speed of the valve plate assembly 20. Through the above arrangement, the valve plate assembly 20 is easier to operate when rotating in the positive direction or the reverse direction, and the response speed of the valve body 10 when opening or closing is also improved.

[0042] As shown, Figure 6 The sealing element 50 is in a ring structure. Therefore, the sealing element 50 is arranged only at the edge positions of the first valve plate 21 and the second valve plate 22, and the middle parts of the first valve plate 21 and the second valve plate 22 are in a hollow structure, which can not only reduce the material usage of the sealing element 50, avoid material waste, and save production costs, but also reduce the overall weight of the valve plate assembly 20, so that the driving assembly 30 can drive the valve plate assembly 20 more flexibly, and the valve plate assembly 20 can respond more quickly.

[0043] In this embodiment, the first valve plate 21 and the second valve plate 22 are in a waist-shaped structure, and the structure of the sealing element 50 is adapted to the structure of the first valve plate 21 and the second valve plate 22. Therefore, compared with the rectangular blade in the prior art, the sealing ring is wrinkled at the turning position of the blade, which affects the flatness of the sealing ring and further affects the sealing effect of the sealing ring. In this application, the valve plate assembly 20 and the sealing element 50 are arranged in a waist-shaped structure, so that the edge of the valve plate assembly 20 is relatively smooth, thereby reducing the wrinkling of the sealing element 50 and improving the sealing performance of the sealing element 50.

[0044] Specifically, the compression amount of the sealing member 50 is L, 2mm≤L≤4mm. If L<2mm, the compression amount of the sealing member 50 is too small when the valve is closed, and there may be a leakage, which cannot guarantee the sealing effect; if L>4mm, the compression amount of the sealing member 50 is too large when the valve is closed, and the sealing member 50 and the valve body 10 will generate a large friction when the valve body 10 is opened, which will cause the valve to be difficult to open, and thus the response speed of the valve body 10 is slow. Therefore, the compression amount of the sealing member 50 is set to 2mm≤L≤4mm, by controlling the compression amount of the sealing member 50, the sealing effect can be guaranteed, at the same time, the frictional resistance when the valve plate assembly 20 rotates is reduced, and the response speed and the smoothness of the operation of the valve body 10 are improved.

[0045] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0046] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of providing an appropriate understanding. Technical, methods, and apparatuses known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered part of the specification as appropriate. In all examples shown and discussed herein, any specific value is to be interpreted as illustrative only and not as a limitation. Thus, other examples of example embodiments can have different values. It is noted that like references and designations have been used to identify like items throughout the drawings, and thus once an item is defined in one drawing, it should not require further discussion in subsequent drawings.

[0047] In the description of the utility model, it is understood that the orientation words such as '' front, back, up, down, left, right '' '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated orientation or positional relationship is usually based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, in the absence of the opposite statement, these orientation words do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the protection scope of the utility model;The orientation words '' inside, outside '' refer to the inside and outside relative to the contour of each component.

[0048] For the convenience of description, spatial relative terms such as '' above'', '' above'', '' upper surface'', '' upper '' and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as '' above '' or '' above '' other devices or structures will be positioned '' below '' or '' below '' other devices or structures. Thus, the exemplary term '' above '' can include both '' above '' and '' below '' orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0049] In addition, it should be noted that the use of '' first'', '' second '' and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore can not be understood as the limitation of the protection scope of the utility model.

[0050] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, for those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A flow regulating valve characterized by, The flow regulating valve comprises: a valve body (10) having two spaced-apart valve cavities (101) for fluid flow; two valve plate assemblies (20), each of the valve cavities (101) corresponding to one of the valve plate assemblies (20) rotatably arranged, the rotation axis of the valve plate assemblies (20) extending along the length direction of the valve plate assemblies (20) and being perpendicular to the flow direction of the fluid, the valve plate assemblies (20) being used for conducting or blocking the valve cavities (101); a drive assembly (30) arranged on the valve body (10) and a transmission structure (40) arranged between the drive assembly (30) and the valve plate assemblies (20), the transmission structure (40) having two spaced-apart transmission segments, the extension directions of the two transmission segments having an included angle, the two transmission segments corresponding to the two valve plate assemblies (20) one by one, the drive assembly (30) being in driving connection with the two transmission segments respectively, the transmission segments being in driving connection with the valve plate assemblies (20), the drive assembly (30) being capable of driving the two valve plate assemblies (20) to rotate relatively in opposite directions to regulate the flow amount of the fluid in the valve cavities (101).

2. The flow regulating valve of claim 1, wherein The transmission structure (40) comprises a transmission rod (41) and two connecting rods (42), the two connecting rods (42) being arranged at the two ends of the transmission rod (41) respectively, one end of the connecting rod (42) being in hinged connection with the transmission rod (41), the other end of the connecting rod (42) being in synchronous rotation with the valve plate assembly (20), the extension directions of the two connecting rods (42) having an included angle, the connecting rod (42) forming the transmission segment, the output shaft of the drive assembly (30) being in driving connection with one of the valve plate assemblies (20), the extension direction of the output shaft being the same as the rotation axis of the valve plate assembly (20).

3. The flow regulating valve of claim 2, wherein, The flow regulating valve further comprises a sealing member (50) arranged on the valve plate assembly (20) along the edge of the valve plate assembly (20), the sealing member (50) being used for abutting against the inner side wall of the valve body (10), the sealing member (50) cooperating with the valve plate assembly (20) to block the valve cavities (101).

4. The flow regulating valve of claim 3, wherein, The valve plate assembly (20) comprises a first valve plate (21) and a second valve plate (22) arranged spaced apart, the first valve plate (21) and the second valve plate (22) being parallel to each other, the extension direction of the first valve plate (21) being the same as the extension direction of the valve plate assembly (20), the sealing member (50) being arranged between the first valve plate (21) and the second valve plate (22), the projections of the edges of the first valve plate (21) and the second valve plate (22) along the thickness direction of the valve plate assembly (20) being located on the sealing member (50).

5. The flow regulating valve of claim 4, wherein, The flow regulating valve further comprises two spaced-apart rotating shafts (60) rotatably arranged in the valve cavity (101), the extending direction of the rotating shafts (60) is the same as the extending direction of the rotating axis of the valve plate assembly (20), the rotating shafts (60) are connected with the valve plate assembly (20) through fastening pins, and the two rotating shafts (60) are arranged in one-to-one correspondence with the two valve plate assemblies (20).

6. The flow regulating valve of claim 5, wherein, The projection of the part of the first valve plate (21) on the one side of the rotating shaft (60) along the thickness direction of the valve plate assembly (20) is located on the second valve plate (22), and the projection of the part of the second valve plate (22) on the other side of the rotating shaft (60) along the thickness direction of the valve plate assembly (20) is located on the first valve plate (21).

7. The flow regulating valve of claim 3, wherein The sealing element (50) is of an annular structure.

8. The flow regulating valve of claim 3, wherein, The compression amount of the sealing element (50) is L, 2mm≤L≤4mm.

9. The flow regulating valve of claim 5, wherein, A shaft sleeve is arranged on the valve plate assembly (20) and extends along the thickness direction of the valve plate assembly (20), a through hole is arranged on the rotating shaft (60) and corresponds to the shaft sleeve, and the shaft sleeve and the through hole are matched with each other through a fastening pin to fix the relative position of the valve plate assembly (20) and the rotating shaft (60).

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