Reducing valve and wind field system

Abstract

The utility model provides a reducing valve which comprises a first seat body and a second seat body, the first seat body is arranged on the second seat body, the first seat body and the second seat body are provided with through holes which are coaxially arranged and communicated with each other, and a rotating ring used for adjusting the hole diameter of the through holes in the radial direction is rotatably arranged between the first seat body and the second seat body. The rotating axis of the rotating ring is coaxial with the axis of the through hole, the rotating ring is provided with a rotating surface arranged around the axis of the through hole, and a first sealing ring matched with the first seat body and a second sealing ring matched with the second seat body are arranged on the rotating surface; the utility model further provides a wind field system which comprises the variable-diameter valve. According to the reducing valve, the diameter of the through hole is changed in a scaling mode, good fluid flow velocity uniformity can be guaranteed, the sealing ring is arranged on the rotary face of the rotary ring, the service life of the sealing ring can be guaranteed, the sealing effect is good, and the influence on fluid in the through hole can be reduced.

Description

Technical Field

[0001] The utility model relates to additive manufacturing equipment, in particular to a variable diameter valve and a wind farm system. Background Art

[0002] Fluids such as water, gas, and air have become indispensable components of various manufacturing equipment, necessitating the emergence of various functional regulating valves for water and gas circuits. However, as equipment becomes increasingly sophisticated, the requirements for fluid regulation are also becoming increasingly stringent. For example, in the 3D printing industry, air inlets must be able to adjust the air volume to achieve uniformity. To address this issue, the industry currently employs two main solutions: The first utilizes existing, well-established valve bodies, such as butterfly valves, ball valves, and globe valves, where the valve stem drives the opening and closing elements, rotating around the stem axis to regulate gas flow. The second utilizes an iris valve or its improved structure. As the control stem moves upward or downward, the aperture of the metal plate expands or contracts accordingly, thereby regulating the flow of fluid or gas.

[0003] However, both structures currently have shortcomings: the first type of valve body controls the flow of fluid by adjusting the opening and closing of the opening and closing parts, rather than by scaling the diameter, making linear adjustment impossible and significantly affecting the flow rate. Furthermore, adjustment by this type of valve body can disrupt the uniformity of the fluid, leading to fluid deflection and turbulence. While the second type of valve body achieves full-aperture opening diameter adjustment, it also suffers from poor airtightness, making it unsuitable for use with high pressures and liquids. Alternatively, some valves have improved airtightness but lack real-time adjustment, making them inconvenient to use. Utility Model Content

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a variable diameter valve and a wind farm system for solving the above technical problems.

[0005] The utility model is achieved in this way:

[0006] An embodiment of the present utility model provides a variable diameter valve, including a first seat body and a second seat body, the first seat body is installed on the second seat body, and the two have through holes that are coaxially arranged and interconnected, and a rotating ring for radially adjusting the aperture of the through hole can be rotatably arranged between the first seat body and the second seat body, the rotating axis of the rotating ring is coaxial with the axis of the through hole, and the rotating ring has a rotating surface arranged around the axis of the through hole, and a first sealing ring that cooperates with the first seat body and a second sealing ring that cooperates with the second seat body are arranged on the rotating surface.

[0007] Furthermore, two annular sealing grooves are provided on the rotating surface and are arranged around the axis of the through hole, and the first sealing ring and the second sealing ring are respectively arranged in the two annular sealing grooves.

[0008] Furthermore, the rotating ring has a handle, the handle extends from between the first base body and the second base body, and the handle is located between the first sealing ring and the second sealing ring.

[0009] Furthermore, a rotation scale is provided on at least one of the first base, the second base and the rotating ring.

[0010] Furthermore, the first seat body and the second seat body are connected by fasteners, and waist-shaped holes corresponding to the fasteners are provided on the end surface of the rotating ring. The fasteners pass through the corresponding waist-shaped holes and the waist-shaped holes extend along the circumference of the rotating ring.

[0011] Furthermore, a spacer is sleeved on each of the fasteners. The spacer passes through the corresponding waist-shaped hole, and two ends of the spacer respectively abut against the first base body and the second base body.

[0012] Furthermore, the rotating ring includes a shaft connection portion and an outer edge portion, the rotating surface is located on the shaft connection portion, and the outer edge portion radially extends outward from the rotating surface and is sandwiched between the first seat body and the second seat body;

[0013] The outer edge portion is separated into a first end and a second end by a shaft connection portion. The first end extends into the through hole of the first base body and is pivotally connected to the first base body; the second end extends into the through hole of the second base body and is pivotally connected to the second base body.

[0014] Furthermore, a plurality of arc-shaped blades are provided on the rotating ring, and a plurality of rotating shafts corresponding to the arc-shaped blades are provided on the inner wall of the through hole of the first base body, and one end of each arc-shaped blade is rotatably connected to the rotating ring via the corresponding rotating shaft, and the axis direction of the rotating shaft is the axial direction of the through hole;

[0015] A plurality of positioning grooves corresponding to the arc-shaped blades are provided on the end surface of the rotating ring, and a sliding shaft extending into the corresponding positioning groove is provided at the other end of the arc-shaped blade. The positioning groove extends along the radial direction of the through hole.

[0016] Furthermore, the first base and the second base are both flange-shaped.

[0017] An embodiment of the present invention further provides an air field system, comprising a printer and the above-mentioned variable-diameter valve, wherein the variable-diameter valve is installed on the air inlet pipe of the printer.

[0018] The utility model has the following beneficial effects:

[0019] In the variable diameter valve of the present invention, the diameter adjustment of the through hole is achieved by controlling the rotation of the rotating ring, and the diameter scaling process is linear. The scaled aperture cross-section is almost circular and coaxial with the pipeline. Compared with other valve bodies, it has little effect on the flow rate and uniformity of the fluid.

[0020] Furthermore, because both the first and second sealing rings are located on the rotating surface of the rotating ring, the sealing structure is not located within the pipe, unlike diaphragm seals. This eliminates the possibility of damage to the sealing structure from fluid impact or fatigue aging. Furthermore, the rotating ring does not affect the two sealing rings when adjusting the through-hole diameter, significantly increasing the lifespan of the sealing structure. Furthermore, because the sealing structure is not located within the pipe, its impact on the fluid is also reduced. Compared to other sealing ring methods, this offers excellent sealing, smooth adjustment, no sticking, and real-time adjustment, facilitating equipment commissioning and production, and saving significant labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a variable diameter valve provided in an embodiment of the present utility model;

[0023] Figure 2 An exploded view of a variable diameter valve provided in an embodiment of the present utility model;

[0024] Figure 3 A cross-sectional view of a variable diameter valve provided in an embodiment of the present utility model;

[0025] Figure 4 Schematic diagram of the matching structure of the rotating ring and seat body of the variable diameter valve provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1 as well as Figure 2The utility model embodiment provides a variable diameter valve can be used for the aperture adjustment of flow path, such as gas flow path or liquid flow path. Specifically, the variable diameter valve includes first seat body 1 and second seat body 2, first seat body 1 is installed on second seat body 2, and the two are the main body of the variable diameter valve, the variable diameter valve can be installed on the corresponding flow path through first seat body 1 and second seat body 2, first seat body 1 and second seat body 2 all have through hole 3, the through hole 3 of the two is coaxially arranged and is interconnected, and the aperture is same, namely when first seat body 1 is installed on second seat body 2, two through holes 3 form an overall structure that penetrates the variable diameter valve, and are the flow channel of the variable diameter valve.

[0028] The variable diameter valve further includes rotating ring 4, rotating ring 4 is located between first seat body 1 and second seat body 2, and rotating ring 4 is rotatably connected with first seat body 1 and second seat body 2, and the rotation axis 48 of rotating ring 4 is coaxial with the axis of through hole 3, namely the rotation of rotating ring 4 around the axis of through hole 3 relative to first seat body 1 and second seat body 2 can be controlled. And in the rotating process of rotating ring 4, rotating ring 4 can adjust the aperture of through hole 3 along the radial direction, of course, the so-called adjustment of the aperture of through hole 3 here is not the scaling of the aperture of the whole through hole 3, but the aperture adjustment in the region corresponding to rotating ring 4.

[0029] Rotating ring 4 has a surface of revolution around the axis of through hole 3, first sealing ring 41 and second sealing ring 42 are arranged on the surface of revolution, first sealing ring 41 is located at the matching position of the surface of revolution and first seat body 1, and second sealing ring 42 is located at the matching position of the surface of revolution and second seat body 2.

[0030] In the embodiment, rotating ring 4 is the adjusting component of the variable diameter valve, the through flow of the whole variable diameter valve can be adjusted, and since the adjusting mode is the scaling of the aperture of through hole 3, not only the linear adjustment is realized, but also the scaled aperture section is nearly circular and coaxial with the pipeline, and the uniformity influence is very small. Since first sealing ring 41 and second sealing ring 42 are located on the surface of revolution of rotating ring 4, not only the influence of fluid on the sealing rings can be reduced, and the service life of first sealing ring 41 and second sealing ring 42 is guaranteed, but also first sealing ring 41 and second sealing ring 42 do not affect the fluid in through hole 3.

[0031] Referring to Figure 2 And Figure 3 In the preferred embodiment, annular sealing grooves 11 (21) are arranged on first seat body 1 and second seat body 2, the annular sealing grooves 11 (21) are also arranged around the axis of through hole 3 and face the surface of revolution of rotating ring 4, that is, they extend along the circumference of the surface of revolution to form a closed ring, first sealing ring 41 and second sealing ring 42 are located in the two annular sealing grooves 11 (21) respectively, of course, first sealing ring 41 and second sealing ring 42 all protrude into the corresponding sealing grooves 11 (21), and are extruded with rotating ring 4 to achieve dynamic sealing.

[0032] The structure of the rotating ring 4 is refined, which has a handle 43 extending between the first seat body 1 and the second seat body 2. Generally, there is a gap between the outer circumferential surfaces of the first seat body 1 and the second seat body 2, which is annular, and the handle 43 of the rotating ring 4 extends from the gap, and the handle 43 is driven to move along the gap, and then the rotating ring 4 can be controlled to rotate around the axis of the through hole 3 to realize the scaling of the aperture of the through hole 3. Based on this, the first sealing ring 41 and the second sealing ring 42 are located on both sides of the gap. Generally, a rotation scale 44 is provided on the first seat body 1, the second seat body 2, or the rotating ring 4, or on two or three of them, and the scales 44 are consistent in standard, and the aperture of the through hole 3 can be accurately reflected through the scale 44, and the operation and observation are very convenient.

[0033] Referring to Figure 3 and Figure 4 , the structure of the rotating ring 4 is further refined, which includes a shaft connecting part 45 and an outer edge part 46, the above-mentioned rotary surface is located on the shaft connecting part 45, and the outer edge part 46 is formed by extending radially outward from the rotary surface, and the outer edge part 46 is clamped between the first seat body 1 and the second seat body 2, that is, the outer edge part 46 is located in the above-mentioned gap, and the handle 43 is provided on the outer edge part 46. The outer edge part 46 separates the shaft connecting part 45 into two parts, which are the first end and the second end, respectively, wherein the first end extends into the through hole 3 of the first seat body 1 and the first end is pivoted to the first seat body 1, and the second end extends into the through hole 3 of the second seat body 2 and the second end is pivoted to the second seat body 2, and the above-mentioned first sealing ring 41 and the second sealing ring 42 are located on the first end and the second end.

[0034] The through hole 3 in the first seat body 1 and the second seat body 2 is a stepped hole structure, and the large aperture section and the small aperture section are coaxial cylindrical holes. When the rotating ring 4 is fully opened, the inner diameter of the rotating ring 4 is the same as the small aperture of the through hole 3, and the aperture of the through hole 3 corresponding to the rotating ring 4 is larger. When the rotating ring 4 is installed between the first seat body 1 and the second seat body 2, the first end is just located in the large aperture section, and the outer circumferential surface of the first end is in contact with the inner wall of the large aperture section of the through hole 3 of the first seat body 1, and similarly, the outer circumferential surface of the second end is in contact with the inner wall of the large aperture section of the through hole 3 of the second seat body 2, and when the rotating ring 4 is fully opened, the aperture of the entire through hole 3 of the variable diameter valve is the same. In this embodiment, the shaft connecting part 45 of the rotating ring 4 is similar to a shaft structure, and the mounting structure between the shaft connecting part 45 and the first seat body 1 and the second seat body 2 is similar to the shaft hole cooperation mounting, and the first sealing ring 41 and the second sealing ring 42 are located at the shaft hole cooperation position.

[0035] Referring to Figure 2-Figure 4In one embodiment, a plurality of arc-shaped blades 47 are provided on the rotating ring 4, and a plurality of rotating shafts 48 corresponding to the arc-shaped blades 47 are provided on the inner wall of the through hole 3 of the first seat body 1. One end of the arc-shaped blade 47 is rotatably connected to the rotating ring 4 through the corresponding rotating shaft 48, and the axis of the rotating shaft 48 is parallel to the axial direction of the shaft hole; a plurality of positioning grooves 49 are also provided on the end surface of the rotating ring 4, and the positioning grooves 49 correspond to the arc-shaped blades 47 one by one. The other end of the arc-shaped blade 47 is provided with a sliding shaft 410 extending into the corresponding positioning groove 49, and the positioning grooves 49 all extend along the radial direction of the through hole 3. In this embodiment, the rotating shaft 48 is mounted on the stepped surface of the stepped hole of the first base body 1. The rotating shaft 48 is parallel to the axial direction of the through hole 3. One end of the arc-shaped blade 47 is rotatably connected to the rotating shaft 48, and the other end can slide along the positioning groove 49 via the sliding shaft 410. The arc-shaped blades 47 are all close to the inner diameter of the rotating ring 4, and the arc-shaped blades 47 are stacked in sequence on the end surface of the rotating ring 4. Since the rotating shafts 48 are spaced a certain distance apart, the adjacent arc-shaped blades 47 partially overlap, while the other parts do not overlap. In addition, when the rotating ring 4 is fully opened, each arc-shaped blade 47 will not protrude from the inner diameter of the rotating ring 4. At this time, each arc-shaped blade 47 has two opposite sides (extending along the length direction of the arc-shaped blade 47), one side is close to the inner diameter of the rotating ring 4, and the other side is away from the inner diameter of the rotating ring 4. The connection position between the sliding shaft 410 and the arc-shaped blade 47 is also located on the side of the arc-shaped blade 47 away from the inner diameter of the rotating ring 4. Each sliding shaft 410 is located at the head end of the corresponding positioning groove 49, and the end of the positioning groove 49 is close to the inner diameter of the rotating ring 4.

[0036] Based on this, when the inner diameter of the through hole 3 needs to be changed, the rotating ring 4 is driven to rotate. Since one end of the arc-shaped blade 47 forms a sliding connection with the positioning groove 49 of the rotating ring through the sliding shaft 410, but at the same time one end of the arc-shaped blade 47 is positioned by the rotating shaft 48, each arc-shaped blade 47 rotates around the corresponding rotating shaft 48, and the sliding shaft 410 moves radially along the positioning groove 49. In this process, a partial area of ​​each arc-shaped blade 47 gradually protrudes from the inner diameter of the rotating ring 4 at a certain angle, thereby achieving the purpose of changing the aperture of the through hole 3. When the sliding shaft 410 moves to the end of the corresponding positioning groove 49, the area of ​​the arc-shaped blade 47 protruding from the inner diameter of the rotating ring 4 is the largest, and the aperture of the through hole 3 is the smallest. For example, at this time the aperture of the through hole 3 is zero, and the through hole 3 is completely closed. During the above-mentioned aperture adjustment process, since the arc-shaped blades 47 are overlapped in sequence, the areas protruding from the inner diameter of the rotating ring 4 also form a certain overlap. When there are more arc-shaped blades 47, the protruding parts of each arc-shaped blade 47 are approximately complete arcs as a whole, and the protruding sizes at each location are approximately the same. The airflow before and after the adjustment of the through hole 3 does not change and is always parallel to the axis.

[0037] See also Figure 1 as well as Figure 2Preferably, the first seat body 1 and the second seat body 2 are connected by the fastener 5, and a plurality of waist-shaped holes 411 corresponding to the fastener 5 are arranged on the end face of the rotating ring 4, the fastener 5 passes through the corresponding waist-shaped hole 411, and the waist-shaped hole 411 extends along the circumference of the rotating ring 4. In the embodiment, the fastener 5 is a screw, a plurality of fasteners 5 are arranged at intervals along the circumference of the first seat body 1 and the second seat body 2, each fastener 5 passes through the first seat body 1, the rotating ring 4 and the second seat body 2 in turn, and the connection and fixation of the first seat body 1, the rotating ring 4 and the second seat body 2 are formed. Of course, the rotating ring 4 is not locked with the first seat body 1 and the second seat body 2 by the fastener 5, and the rotating ring 4 can rotate relative to the two seat bodies. The extension length of the waist-shaped hole 411 is related to the rotation angle of the rotating ring 4, when the rotating ring 4 rotates, the fastener 5 does not rotate synchronously, and at this time, the relative movement between the fastener 5 and the waist-shaped hole 411 is generated. Generally, the rotation angle of the rotating ring 4 is not too large, and the length of the waist-shaped hole 411 also does not need to be too large, the waist-shaped hole 411 is arc-shaped, and the central angle thereof is the same as the maximum rotation angle of the rotating ring 4.

[0038] The above embodiment is optimized, and a spacer 51 is sleeved on each fastener 5, the spacer 51 passes through the corresponding waist-shaped hole 411, and the two ends abut against the first seat body 1 and the second seat body 2, respectively. In the embodiment, the first seat body 1 and the second seat body 2 can be supported by the spacer 51, so that the rotating ring 4 can be prevented from being clamped and fixed by the first seat body 1 and the second seat body 2, and the stable rotation of the rotating ring 4 is ensured. The first seat body 1 and the second seat body 2 adopt a flange structure, so that the fastener 5 can be conveniently used to install and connect the two seat bodies, and the two seat bodies can be conveniently applied to a flow path.

[0039] The embodiment of the present application also provides a wind field system, which comprises a printer and the variable diameter valve, and the variable diameter valve is arranged on the air inlet pipe of the printer. In the embodiment, the variable diameter valve is applied to additive manufacturing, the diameter of the through hole 3 can be directly changed along the radial direction, the airflow can be always kept parallel to the pipeline while the wind speed and the air volume are controlled, so that the airflow collides with the inner wall and rebounds back and forth is avoided, the generation of turbulent flow is greatly reduced, and the uniformity of the wind is improved.

[0040] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A variable diameter valve, comprising a first seat body and a second seat body, wherein the first seat body is mounted on the second seat body, and the first seat body and the second seat body have a through hole coaxially arranged and interconnected, characterized in that: A rotating ring for radially adjusting the aperture of the through hole is rotatably provided between the first seat body and the second seat body. The rotating axis of the rotating ring is coaxial with the axis of the through hole. The rotating ring has a rotating surface arranged around the axis of the through hole. A first sealing ring cooperating with the first seat body and a second sealing ring cooperating with the second seat body are provided on the rotating surface.

2. The variable diameter valve according to claim 1, characterized in that: Annular sealing grooves are provided on the first base and the second base, and the first sealing ring and the second sealing ring are respectively provided in the two annular sealing grooves.

3. The variable diameter valve according to claim 1, characterized in that: The rotating ring has a handle, which extends from between the first base body and the second base body, and is located between the first sealing ring and the second sealing ring.

4. The variable diameter valve according to claim 1, characterized in that: A rotation scale is provided on at least one of the first base, the second base and the rotating ring.

5. The variable diameter valve according to claim 1, characterized in that: The first seat body and the second seat body are connected by fasteners. Waist-shaped holes corresponding to the fasteners are provided on the end surface of the rotating ring. The fasteners pass through the corresponding waist-shaped holes and the waist-shaped holes extend along the circumference of the rotating ring.

6. The variable diameter valve according to claim 5, characterized in that: A spacer is sleeved on each of the fasteners. The spacer passes through the corresponding waist-shaped hole, and two ends of the spacer respectively abut against the first base body and the second base body.

7. The variable diameter valve according to claim 1, characterized in that: The rotating ring includes a shaft connection portion and an outer edge portion, the rotating surface is located on the shaft connection portion, and the outer edge portion radially extends outward from the rotating surface and is sandwiched between the first seat body and the second seat body; The outer edge portion is separated into a first end and a second end by a shaft connection portion. The first end extends into the through hole of the first base body and is pivotally connected to the first base body; the second end extends into the through hole of the second base body and is pivotally connected to the second base body.

8. The variable diameter valve according to claim 1, wherein: A plurality of arc-shaped blades are provided on the rotating ring, and a plurality of rotating shafts corresponding to the arc-shaped blades are provided on the inner wall of the through hole of the first base body. One end of each arc-shaped blade is rotatably connected to the rotating ring via the corresponding rotating shaft, and the axis direction of the rotating shaft is the axial direction of the through hole; A plurality of positioning grooves corresponding to the arc-shaped blades are provided on the end surface of the rotating ring, and a sliding shaft extending into the corresponding positioning groove is provided at the other end of the arc-shaped blade. The positioning groove extends along the radial direction of the through hole.

9. The variable diameter valve according to claim 1, wherein: The first base and the second base are both flange-shaped.

10. A wind farm system, comprising a printer, characterized in that: It also includes the variable diameter valve according to any one of claims 1 to 9, wherein the variable diameter valve is installed on the air inlet pipe of the printer.

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