Flow stabilizer

Abstract

The utility model provides a flow stabilizing device. The flow stabilizing device comprises a valve body, wherein the side wall of the valve body retracts inwards in the flowing direction of fluid; the valve element is located in the valve body, the valve element comprises a support and a pipe body which are sequentially connected in the flowing direction, the support is of a hollow annular structure, and an outer ring of the annular structure abuts against the side wall of the valve body; the sealing elastic piece is arranged on the support in a sleeving mode, and a flow stabilizing opening communicated with the pipe body is formed in the inner ring of the annular structure; the pressing plate is tightly attached to the sealing elastic piece; under the acting force of fluid, the pressing plate acts on the support, so that the support moves in the flowing direction and leaves the initial position, and the flowing area of the flow stabilizing opening is reduced. In addition, after the acting force of the fluid is withdrawn, the support can return to the initial position. Through the overall structure of the flow stabilizing device, water flow can directly pass through the flow stabilizing port without turning in the flow stabilizing process, so that pressure loss is avoided, and noise is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of steady flow devices. BACKGROUND

[0002] The steady flow valve in prior art is compressed by water pressure, the gap between valve core and valve body is reduced, and steady flow is realized. However, the existing steady flow valve can make water flow 90 degrees turn in the steady flow valve, which causes the loss of pressure and the noise generated are relatively large, and the steady flow port is circular, which is easy to cause resonance due to local pressure imbalance of steady flow port. SUMMARY

[0003] The utility model solves the technical problem that the existing steady flow valve can make water flow 90 degrees turn in the steady flow valve, which causes the loss of pressure and the noise generated are relatively large, and provides a kind of steady flow device.

[0004] The utility model solves the above technical problem by the following technical scheme:

[0005] A kind of steady flow device, characterized in that, it includes:

[0006] Valve body, the valve body includes side wall, the side wall is inwardly recessed along the flow direction of fluid;

[0007] Valve core, the valve core is located in the valve body, the valve core includes support and pipe body connected in order along the flow direction, the support is hollow ring structure, and the outer ring of the ring structure is abutted on the side wall of the valve body;

[0008] Sealing elastic element, the sealing elastic element is sleeved on the support, and the inner ring of the ring structure forms steady flow port communicated with the pipe body;

[0009] Pressing plate, the pressing plate is arranged close to the sealing elastic element;

[0010] Wherein, under the action of fluid, the pressing plate acts on the support, so that the support moves along the flow direction and leaves initial position, and reduces the flow area of steady flow port;And after the action of fluid is removed, the support can recover to the initial position.

[0011] In the technical solution, the overall structure of the flow stabilizing device is arranged, so that the water flow can directly pass through the flow stabilizing port without turning, thereby avoiding the loss of pressure and effectively reducing the generation of noise. Specifically, the support is arranged in a hollow ring structure, the flow stabilizing port is formed at the inner ring position of the ring structure, the water flow directly passes through the flow stabilizing port without turning, and the flow stabilizing port is arranged in a whole flow structure. Compared with the circular ring flow structure in the prior art, the resonance caused by the unbalanced pressure is avoided. The pressure generated by the water flow is applied to the pressure plate, the pressure plate exerts pressure on the support, so that the support moves along the flow direction. During the movement, the hollow support is pressed by the side wall which is inwardly retracted along the flow direction, and the inner ring of the ring structure is inclined to be reduced. The sealing elastic member changes according to the change of the inner ring, and finally the flow area of the flow stabilizing port is reduced, the water flow is reduced, and the pressure stabilizing effect is achieved.

[0012] Preferably, the support comprises a first part and a second part, one end of the first part abuts against the side wall of the valve body to form an outer ring of the ring structure, and the other end extends along the radial direction of the valve body to form an inner ring of the ring structure; the second part extends outwardly and obliquely along the flow direction, one end of the second part is connected to the first part at the middle region along the radial direction, and the other end is connected to the pipe body.

[0013] The number of the first part and the second part is multiple, and they are connected one by one. The plurality of first parts are arranged at intervals along the circumferential direction of the valve body, and the plurality of second parts are arranged at intervals along the circumferential direction of the valve body.

[0014] The sealing elastic member is sleeved on the plurality of first parts.

[0015] In the technical solution, the specific arrangement of the support is provided by the above arrangement, and the hollow region of the hollow structure of the support is formed between the adjacent first parts, so as to facilitate the overall displacement of the support.

[0016] Preferably, the first part comprises a main body extending along the radial direction, and a first segment and a second segment connected to both ends of the main body along the radial direction, respectively. The first segment and the second segment extend along the circumferential direction of the valve body, and the first segment is arranged close to the center axis, and the second segment is arranged away from the center axis.

[0017] The outer periphery of the plurality of first segments forms the outer ring of the ring structure, and the outer periphery of the plurality of first segments forms the inner ring of the ring structure.

[0018] In the technical solution, the specific arrangement of the first part is provided by the above arrangement.

[0019] Preferably, the valve core further comprises a connecting piece connected between two adjacent second segments along the circumferential direction; and / or,

[0020] The width of the main body gradually increases along the radial direction; and / or,

[0021] The size of the first segment along the circumferential direction is greater than the size of one end of the main body close to the first segment along the circumferential direction.

[0022] In the technical solution, the connecting piece is arranged between two adjacent second segments, so that the plurality of second segments and the connecting piece form a ring structure, which can better abut against the side wall and better support the sealing elastic piece. By gradually increasing the width of the main body along the radial direction, the structural strength of the main body can be enhanced. By setting the size of the first segment along the circumferential direction to be greater than the size of one end of the main body close to the first segment along the circumferential direction, the solid structure of the inner ring of the ring structure of the support can be increased, thereby better supporting the sealing elastic piece located outside.

[0023] Preferably, the second part has a first included angle with the central axis, and the first included angle is 45-75 degrees; and / or,

[0024] The number of the first parts and the second parts is greater than or equal to 4, a plurality of the first parts are arranged at equal intervals along the circumferential direction of the valve body, and a plurality of the second parts are arranged at equal intervals along the circumferential direction of the valve body.

[0025] In the technical solution, by setting the value range of the first included angle, the support can better generate a tendency under the action force, and the flow area of the flow stabilizing port can be adjusted. By setting the number of the first parts and the second parts to be greater than or equal to 4, and arranging a plurality of the first parts at equal intervals along the circumferential direction of the valve body and a plurality of the second parts at equal intervals along the circumferential direction of the valve body, the stress of the support can be more uniform.

[0026] Preferably, the valve body comprises a base connected with the side wall of the valve body, the base is arranged along the radial direction of the valve body and located downstream of the side wall along the flow direction.

[0027] In the technical solution, the base is arranged to support the side wall and facilitate the installation of the flow stabilizing device and other components.

[0028] Preferably, an outer periphery of one end of the pipe body close to the support is provided with a protruding boss;

[0029] The flow stabilizing device further comprises an elastic piece, two ends of the elastic piece are connected to the base and the boss, respectively.

[0030] In the technical solution, the elastic member is arranged to push the support back to the initial position, and the boss is arranged to facilitate installation of the elastic member.

[0031] Preferably, a glue layer is arranged between the pressing plate and the sealing elastic member, the pressing plate is fixed on the sealing elastic member through the glue layer, a projection of the pressing plate along the flow direction covers the glue layer, and / or,

[0032] The distance from the outer periphery of the projection of the pressing plate on the sealing elastic member along the radial direction of the valve body to the outer periphery of the sealing elastic member is greater than or equal to 3 mm.

[0033] In the technical solution, the glue layer is arranged between the pressing plate and the sealing elastic member to effectively fix the pressing plate without damaging the sealing surface of the sealing elastic member, the projection of the pressing plate along the flow direction covers the glue layer to prevent the glue layer from affecting other components, and the distance from the outer periphery of the projection of the pressing plate on the sealing elastic member along the radial direction of the valve body to the outer periphery of the sealing elastic member is greater than or equal to 3 mm to prevent the pressing plate from being too large to affect the movement of the support.

[0034] Preferably, the shape of the flow stabilizing port is circular, and / or the shape of the pressing plate is a circular ring.

[0035] In the technical solution, the shape of the flow stabilizing port is circular, which can better reduce pressure loss and noise compared to other shapes, the shape of the pressing plate is a circular ring, which can make the stress of the pressing plate more balanced, apply more balanced force to the support, and avoid resonance.

[0036] Preferably, the extension direction of the side wall of the valve body forms a second included angle with the central axis of the valve body, and the second included angle is 15-45 degrees.

[0037] In the technical solution, the second included angle is arranged to have a value range, so that the side wall can better extrude the support to make the support have a tendency and adjust the flow area of the flow stabilizing port.

[0038] The positive progress effect of the utility model lies in:

[0039] The utility model discloses a whole structure is set up steady flow device, in the steady flow process, water flow does not bend just can directly pass through steady flow port to avoid the loss of pressure, and effectively reduce the generation of noise. Specifically, through setting up the ring structure of hollowing out of support, make steady flow port form in the inner ring position of ring structure, and water flow passes through steady flow port directly, need not to bend, and, through setting up steady flow port inside is the whole flow -through structure, relative to the flow -through structure of circular ring of prior art, avoid the resonance of pressure imbalance, the pressure of water flow produces and exerts on the pressure plate, and the pressure plate exerts pressure on the support, to make the support move along the flow direction, in the moving process, the hollowing out support is extruded under the lateral wall of inward retraction along the flow direction, will produce the oblique tendency and will make the inner ring of ring structure reduce, and the sealing elastic part changes according to the change of inner ring, finally reduce the flow area of steady flow port, and reduce water flow, play the role of steady voltage. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 It is the three-dimensional structure schematic diagram of steady flow device of embodiment 1 of the utility model.

[0041] Figure 2 It is the three-dimensional explosion structure schematic diagram of steady flow device of embodiment 1 of the utility model.

[0042] Figure 3 It is the section structure schematic diagram of steady flow device of embodiment 1 of the utility model.

[0043] Figure 4 It is the three-dimensional structure schematic diagram of valve core of steady flow device of embodiment 1 of the utility model.

[0044] Figure 5 It is the overhead structure schematic diagram of valve core of steady flow device of embodiment 1 of the utility model.

[0045] Figure 6 It is Figure 5 It is the section structure schematic diagram (one) of along A-A direction.

[0046] Figure 7 It is Figure 5 It is the section structure schematic diagram (two) of along A-A direction.

[0047] Figure 8 It is the overhead structure schematic diagram of valve core of steady flow device of embodiment 2 of the utility model.

[0048] REFERENCE SIGNS

[0049] Steady flow device 1

[0050] Valve body 10

[0051] Side wall 11

[0052] Base 12

[0053] Mounting groove 121

[0054] Valve core 20

[0055] Pipe body 21

[0056] Boss 211

[0057] Support 22

[0058] First part 221

[0059] Main body 2211

[0060] First section 2212

[0061] Second section 2213

[0062] Second part 222

[0063] Connecting piece 23

[0064] Sealing elastic member 30

[0065] Pressing plate 40

[0066] Elastic member 50

[0067] First included angle α

[0068] Second included angle β

[0069] First distance d1

[0070] Second distance d2

[0071] Center axis p

[0072] Flow direction F

[0073] Radial direction R DETAILED DESCRIPTION

[0074] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application, and all other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0075] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0077] Example 1

[0078] like Figures 1 to 7 As shown, this embodiment provides a flow stabilizing device 1. The flow stabilizing device 1 includes: a valve body 10, a valve core 20, a sealing elastic element 30, and a pressure plate 40.

[0079] The valve body 10 includes a sidewall 11 that is recessed inward along the flow direction F of the fluid. The valve core 20 is located inside the valve body 10 and includes a support 22 and a tube 21 connected sequentially along the flow direction F. The support 22 has a hollow annular structure, with its outer ring abutting against the sidewall 11 of the valve body 10. A sealing elastic element 30 is sleeved on the support 22, and a flow-stabilizing port communicating with the tube 21 is formed in the inner ring of the annular structure. A pressure plate 40 is disposed tightly against the sealing elastic element 30.

[0080] Under the force of the fluid, the pressure plate 40 acts on the support 22, causing the support 22 to move along the flow direction F and leave the initial position, reducing the flow area of ​​the flow stabilizing port; and after the force of the fluid is removed, the support 22 can return to the initial position.

[0081] Thus, by setting the overall structure of the flow stabilizing device 1, the water flow can directly pass through the flow stabilizing port without turning, thereby avoiding the loss of pressure and effectively reducing the generation of noise. Specifically, by setting the support 22 as a hollow ring structure, the flow stabilizing port is formed at the inner ring position of the ring structure, and the water flow directly passes through the flow stabilizing port without turning. Moreover, by setting the flow stabilizing port as a whole flow-through structure, compared with the circular ring flow-through structure in the prior art, resonance caused by pressure imbalance is avoided. The pressure generated by the water flow is applied to the pressure plate 40, which exerts pressure on the support 22, thereby moving the support 22 along the flow direction F. During the movement, the hollow support 22 is pressed by the side wall 11 that is inwardly retracted along the flow direction F, which tends to be inclined and thus reduces the inner ring of the ring structure. The sealing elastic member 30 changes according to the change of the inner ring, and finally reduces the flow-through area of the flow stabilizing port, thereby reducing the water flow and achieving pressure stabilization.

[0082] Specifically, the support 22 includes a first part 221 and a second part 222. One end of the first part 221 abuts against the side wall 11 of the valve body 10 to form an outer ring of the ring structure, and the other end extends along the radial direction R of the valve body 10 to form an inner ring of the ring structure. The second part 222 extends outwardly and obliquely along the flow direction F. One end of the second part 222 is connected to the middle region of the first part 221 along the radial direction R, and the other end is connected to the pipe body 21. The number of the first part 221 and the second part 222 is multiple, and they are connected one by one. The multiple first parts 221 are arranged at intervals along the circumferential direction of the valve body 10, and the multiple second parts 222 are arranged at intervals along the circumferential direction of the valve body 10. The sealing elastic member 30 is sleeved on the multiple first parts 221. In this way, the hollow region of the hollow structure of the support 22 is formed between adjacent first parts 221, thereby facilitating the overall displacement of the support 22.

[0083] Further, the first part 221 includes a main body 2211 extending along the radial direction R, and a first segment 2212 and a second segment 2213 connected to both ends of the main body 2211 along the radial direction R, respectively. The first segment 2212 and the second segment 2213 extend along the circumferential direction of the valve body 10, and the first segment 2212 is arranged close to the center axis p, and the second segment 2213 is arranged away from the center axis p. The outer periphery of the multiple first segments 2212 forms the outer ring of the ring structure, and the outer periphery of the multiple first segments 2212 forms the inner ring of the ring structure.

[0084] The width of the main body 2211 gradually increases along the radial direction R. In this way, by setting the width of the main body 2211 to gradually increase along the radial direction R, the structural strength of the main body 2211 can be enhanced.

[0085] The first section 2212 has a circumferential dimension greater than that of the end of the main body 2211 close to the first section 2212, so as to increase the solid structure of the inner ring of the annular structure of the bracket 22, thereby better supporting the sealing elastic member 30 located outside the bracket 22.

[0086] Preferably, the second portion 222 extends at a first included angle a with the central axis p, and the first included angle a is 45-75 degrees. In this way, by setting the range of the first included angle a, the bracket 22 is more likely to be inclined under the action of force, thereby adjusting the flow area of the steady flow port.

[0087] The number of the first portions 221 and the second portions 222 is greater than or equal to 4, and the plurality of first portions 221 are equidistantly arranged along the circumference of the valve body 10, and the plurality of second portions 222 are equidistantly arranged along the circumference of the valve body 10. In this way, by setting the number of the first portions 221 and the second portions 222 to be greater than or equal to 4, and equidistantly arranging the plurality of first portions 221 along the circumference of the valve body 10 and the plurality of second portions 222 along the circumference of the valve body 10, the stress on the bracket 22 is more uniform.

[0088] Preferably, the bracket 22 and the pipe body 21 are integrally formed, thereby improving the overall structural strength of the valve core 20. The valve core 20 is made of stainless steel or PPS (Polyphenylene Sulfide).

[0089] In the embodiment, the valve body 10 includes a base 12 connected to the side wall 11 of the valve body 10, the base 12 is arranged along the radial direction R and is located downstream of the side wall 11 along the flow direction F. In this way, by arranging the base 12, on the one hand, the side wall 11 is supported, and on the other hand, the installation of the steady flow device 1 and other components is facilitated. The base 12 is provided with a mounting groove 121 along the outer periphery in the circumferential direction.

[0090] The outer periphery of the end of the pipe body 21 close to the bracket 22 is provided with a protruding boss 211. The steady flow device 1 further includes an elastic member 50, and the two ends of the elastic member 50 are connected to the base 12 and the boss 211, respectively. In this way, by arranging the elastic member 50, the bracket 22 can be pushed back to the initial position; by arranging the boss 211, the installation of the elastic member 50 is facilitated. The bracket 22 is fixed to the boss 211.

[0091] Preferably, a glue layer is arranged between the pressing plate 40 and the sealing elastic member 30, and the pressing plate 40 is fixed to the sealing elastic member 30 through the glue layer. The orthogonal projection of the pressing plate 40 along the flow direction F covers the glue layer. In this way, the glue layer is arranged between the pressing plate 40 and the sealing elastic member 30, so that the effective fixing of the pressing plate 40 is realized on the basis of ensuring that the sealing surface of the sealing elastic member 30 is not damaged. Further, the orthogonal projection of the pressing plate 40 along the flow direction F covers the glue layer, so that the influence of the glue layer on other components can be prevented.

[0092] The outer periphery of the orthogonal projection of the pressing plate 40 on the sealing elastic member 30 along the flow direction F is located at a distance greater than or equal to 3 mm from the outer periphery of the sealing elastic member 30 along the radial direction R, so that the size of the pressing plate 40 does not excessively affect the movement of the support 22. The distance includes a first distance d1 from the pressing plate 40 to the edge of the sealing elastic member 30 at the outer ring position of the support 22 and a second distance d2 from the pressing plate 40 to the edge of the sealing elastic member 30 at the inner ring position of the support 22.

[0093] Preferably, the shape of the flow stabilizing port is circular. In this way, compared with other shapes, the pressure loss and noise can be better reduced by arranging the shape of the flow stabilizing port as circular. The diameter of the flow stabilizing port is 4 cm-6 mm, so that the conventional flow demand of the water heater can be met under the commonly used water pressure.

[0094] The shape of the pressing plate 40 is a circular ring, so that the stress of the pressing plate 40 is more balanced, the pressing plate 40 can exert more balanced force on the support 22, and resonance can be avoided.

[0095] The extension direction of the side wall 11 of the valve body 10 forms a second included angle β with the central axis p, and the second included angle β is 15 degrees-45 degrees. In this way, by arranging the value range of the second included angle β, the side wall 11 can better extrude the support 22, so that the support 22 is inclined to adjust the flow area of the flow stabilizing port.

[0096] The working principle of the flow stabilizing device 1 of the embodiment is as follows: when the water flow flows into the valve body 10 and the water pressure increases, the valve core 20 moves downward, the support 22 of the valve core 20 moves inwardly and inclines under the interaction between the valve core 20 and the inner side of the valve body 10, the flow stabilizing port is reduced, and the water flow is reduced. When the water pressure decreases, the valve core 20 is reset upward under the action of the elastic member 50, the flow stabilizing port is increased, and the flow is increased. Please refer to Figure 7 , when the support 22 is in the initial position, the center lines of the first part 221 and the second part 222 are shown as a dashed line B, and when the support 22 is away from the initial position, the center lines of the first part 221 and the second part 222 are shown as a dashed line C.

[0097] The embodiment sets the overall structure of the flow stabilizing device 1, so that the water flow can directly pass through the flow stabilizing port without turning, thereby avoiding the loss of pressure and effectively reducing the generation of noise. Specifically, by setting the support 22 as a hollow ring structure, the flow stabilizing port is formed at the inner ring position of the ring structure, and the water flow directly passes through the flow stabilizing port without turning. In addition, by setting the flow stabilizing port as a whole flow-through structure, compared with the circular ring flow-through structure in the prior art, resonance caused by pressure imbalance is avoided. The pressure generated by the water flow is applied to the pressure plate 40, which exerts pressure on the support 22, so that the support 22 moves along the flow direction F. During the movement, the hollow support 22 is pressed by the side wall 11 which is inwardly retracted along the flow direction F, and will tend to be inclined, thereby reducing the inner ring of the ring structure. The sealing elastic element 30 changes according to the change of the inner ring, and finally reduces the flow-through area of the flow stabilizing port, thereby reducing the water flow and stabilizing the pressure.

[0098] Embodiment 2

[0099] As Figure 8 shown, the overall structure of the flow stabilizing device 1 of the embodiment is basically the same as that of embodiment 1, and the difference is that the valve core 20 further includes a connecting piece 23 connected between two adjacent second segments 2213 in the circumferential direction. In this way, by arranging the connecting piece 23 between the two adjacent second segments 2213, the plurality of second segments 2213 and the connecting piece 23 form a ring structure, thereby better abutting against the side wall 11 and better supporting the sealing elastic element 30.

[0100] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the protection scope of the present application.

Claims

1. A flow stabilizing device, characterized by It comprises: a valve body comprising a side wall, which is inwardly recessed along the flow direction of the fluid; a valve core located in the valve body, which comprises a support and a pipe body connected in sequence along the flow direction, the support being a hollow ring structure, and the outer ring of the ring structure abutting against the side wall of the valve body; a sealing elastic member, which is sleeved on the support and forms a steady flow port in communication with the pipe body at the inner ring of the ring structure; a pressing plate, which is arranged in close contact with the sealing elastic member; wherein, under the action of the fluid, the pressing plate acts on the support, so that the support moves along the flow direction and leaves the initial position, thereby reducing the flow area of the steady flow port; and after the action of the fluid is removed, the support can return to the initial position.

2. The steady flow device according to claim 1, wherein the support comprises a first part and a second part, one end of the first part abuts against the side wall of the valve body to form the outer ring of the ring structure, and the other end extends along the radial direction of the valve body to approach the central axis of the valve body to form the inner ring of the ring structure; the second part extends outwardly and obliquely along the flow direction, one end of the second part is connected to the middle region of the first part along the radial direction, and the other end is connected to the pipe body; the number of the first part and the second part is both multiple, and they are connected one by one, multiple first parts are arranged at intervals along the circumferential direction of the valve body, and multiple second parts are arranged at intervals along the circumferential direction of the valve body; the sealing elastic member is sleeved on multiple first parts.

3. The flow straightener of claim 2, wherein the first part comprises a main body extending along the radial direction, and a first segment and a second segment connected to both ends of the main body along the radial direction, the first segment and the second segment both extend along the circumferential direction of the valve body, and the first segment is arranged close to the central axis, and the second segment is arranged away from the central axis; the outer periphery of multiple first segments forms the outer ring of the ring structure, and the outer periphery of multiple first segments forms the inner ring of the ring structure.

4. The flow straightener of claim 3, wherein the valve core further comprises a connecting piece connected between two adjacent second segments along the circumferential direction; and / or the width of the main body gradually increases along the radial direction; and / or the size of the first segment along the circumferential direction is greater than the size of the end of the main body close to the first segment along the circumferential direction.

5. The flow straightener of claim 2, wherein the extension direction of the second part forms a first included angle with the central axis, and the first included angle is 45-75 degrees; and / or the number of the first part and the second part is both greater than or equal to 4, multiple first parts are arranged at equal intervals along the circumferential direction of the valve body, and multiple second parts are arranged at equal intervals along the circumferential direction of the valve body.

6. The flow straightening device of claim 1, wherein the valve body comprises a base connected with the side wall of the valve body, the base is arranged along the radial direction of the valve body and located downstream of the side wall along the flow direction.

7. The flow straightening device of claim 6, wherein the outer periphery of one end of the pipe body close to the support is provided with a protruding boss; the steady flow device further comprises an elastic member, both ends of the elastic member are connected to the base and the boss, respectively.

8. The flow straightening device of claim 1, wherein A glue layer is arranged between the pressing plate and the sealing elastic member, and the pressing plate is fixed to the sealing elastic member through the glue layer; a normal projection of the pressing plate along the flow direction covers the glue layer; and / or, A distance from an outer periphery of a normal projection of the pressing plate on the sealing elastic member along a radial direction of the valve body to an outer periphery of the sealing elastic member is greater than or equal to 3 mm.

9. The flow straightening device of claim 1, wherein The shape of the flow stabilizing port is circular; and / or, the shape of the pressing plate is a circular ring.

10. A flow straightener according to any one of claims 1 to 9, wherein An extension direction of the side wall of the valve body forms a second included angle with the central axis of the valve body, and the second included angle is 15 degrees-45 degrees.

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