Double-blade regulating valve

Abstract

The utility model discloses a double-blade regulating valve, which comprises a valve body, two valve plates and two regulating knobs, an air flow channel is arranged in the valve body, the two valve plates are coaxially and rotatably connected in the air flow channel of the valve body, the on-off regulation of the air flow channel can be realized through the rotation of the valve plates, and the two regulating knobs are respectively arranged on the two valve plates. The two valve plates are rotationally adjusted respectively; each valve plate comprises a shaft body part, the two sides of each shaft body part are fixedly connected with a large side part and a small side part respectively, and the large side part of one valve plate is matched with the small side part of the other valve plate. According to the utility model, the two valve plates are arranged and matched with each other, so that the air flow passage of the valve body can be regulated and controlled, the regulation can be realized between the closing degree and the maximum opening degree, and the regulation and control of the air inlet amount can be realized. The two valve plates can rotate and be adjusted independently, the adjusting range of any valve plate is approximately half of that of an air flow channel, the two valve plates are combined for adjusting, and the adjusting accuracy of the adjusting valve can be improved.

Description

Technical Field

[0001] The utility model relates to an air speed regulating valve, and more particularly to a double-leaf regulating valve. Background Art

[0002] In existing fresh air systems, pipes, connectors, and valves are required to connect the air inlet and outlet components to ensure proper air circulation. Fresh air systems often have multiple outlets, each installed in a different room to deliver fresh air to each. To achieve balanced airflow in all directions and ensure that airflow to each room remains within the normal range, a speed regulating valve is typically installed in the air supply duct to control the airflow.

[0003] The most common regulating valve at present is usually a single valve plate structure. Figure 6 As shown, it generally includes a valve body 1', a valve plate 2', and a rotating shaft 3'. The shape of the valve plate 2' is adapted to the shape of the valve body 1' and is installed in the valve body 1' via the rotating shaft 3'. During adjustment, the opening and closing of the valve body 1' can be adjusted by adjusting the angle of the valve plate 2'. Different angles of the valve plate 2' correspond to different degrees of opening, thereby adjusting the air intake of the speed regulating valve. Although the current single valve plate structure can also adjust the air intake, it is difficult to adjust the air intake of the valve to the desired range because there is only one valve plate for adjustment.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a double-leaf regulating valve that is regulated by two valve plates and can improve the accuracy of air duct regulation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-leaf regulating valve comprises a valve body, two valve plates and two adjusting knobs, wherein an air flow channel is arranged in the valve body, and the two valve plates are coaxially rotatably connected to the air flow channel of the valve body, and the air flow channel can be regulated on and off by rotating the valve plates, and the two adjusting knobs are respectively installed on the two valve plates for rotating and adjusting the two valve plates respectively; the valve plate comprises a shaft body portion, and a large side portion and a small side portion are respectively fixedly connected on both sides of the shaft body portion, and the large side portion of one valve plate and the small side portion of the other valve plate are adapted to each other.

[0008] The present invention is further configured such that a first limiting surface is formed on one side opposite to the other of the two shaft bodies, and the first limiting surfaces of the two shaft bodies block and limit each other.

[0009] The present invention is further configured such that a shaft hole is provided on the first limiting surface of one shaft body portion, and a rotating shaft is fixedly connected to the first limiting surface of the other shaft body portion, and the rotating shaft is rotatably connected in the shaft hole.

[0010] The present invention is further configured such that the rotating shaft and the shaft hole are both coaxially arranged with the rotating axis of the valve plate.

[0011] The utility model is further configured such that the two valve plates are of a centrally symmetrical structure; during the relative rotation of the two valve plates, the large side portions of the two valve plates can abut against each other to realize rotation linkage.

[0012] The utility model is further configured such that the large side portion includes a protruding portion, and along the axial direction of the shaft body portion, part of the protruding portion protrudes from the first limiting surface of the shaft body portion; during the relative rotation of the two valve plates, the protruding portions of the two valve plates can offset each other to achieve rotational linkage.

[0013] The utility model is further configured such that a second limiting surface is formed on the back side of the two shaft parts, and two third limiting surfaces are formed on the inner wall of the valve body, and the two third limiting surfaces respectively offset the two shaft parts to achieve limiting.

[0014] The present invention is further configured such that a first connection portion is provided on the back side of the two shaft portions, a second connection portion is fixedly provided on the adjusting knob, the first connection portion and the second connection portion are plugged into each other, and the shaft portion and the corresponding adjusting knob can rotate synchronously.

[0015] The utility model is further configured such that a portion of the adjusting knob is located outside the valve body, the adjusting knob is fixedly connected to a rotating portion, a through hole is opened on the side wall of the valve body, the rotating portion of the adjusting knob passes through the through hole and is rotatably connected to the through hole;

[0016] The utility model is further configured such that the outside of the valve body is fixedly connected to two annular protrusions, and two adjusting knobs are respectively located on the inner periphery of the two annular protrusions; the inner periphery of each annular protrusion is formed with a plurality of limiting teeth distributed in an annular array, and the adjusting knob is fixedly connected with an indicating protrusion, and the indicating protrusion forms a limiting tip, and the limiting tip is adapted to the limiting teeth to realize damping limiting.

[0017] The present invention is further configured such that two indicating protrusions are fixedly connected to both sides of the adjusting knob, and the arrangement positions of the two indicating protrusions correspond to the positions of the large side portion and the small side portion.

[0018] In summary, the present invention has the following beneficial effects:

[0019] In this solution, two valve plates are installed within the valve body. These two plates work together to regulate the air flow through the valve body, adjusting it between closed and fully open positions to control the air intake volume. The two valve plates can be rotated and adjusted independently, with the control range of each plate roughly covering half of the air flow path. The combined control of the two plates improves the accuracy of the regulating valve.

[0020] Because the large and small sides of the valve plates are not axially symmetrical, after the two valve plates rotate relative to each other for a certain angle, their protrusions can offset each other, achieving a rotational linkage. Then, as the valve plates continue to rotate and adjust, the protrusions of the two valve plates will transmit torque, driving the other valve plate to rotate, resulting in synchronized rotation of the two valve plates. By controlling one valve plate, both valve plates can be adjusted simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional diagram of a double-leaf regulating valve in this embodiment;

[0022] Figure 2 A top view of a double-leaf regulating valve in this embodiment Figure 1 ;

[0023] Figure 3 A top view of a double-leaf regulating valve in this embodiment Figure 2 ;

[0024] Figure 4 This is an exploded view of a double-leaf regulating valve in this embodiment;

[0025] Figure 5 This is a three-dimensional cross-sectional view of a double-leaf regulating valve in this embodiment;

[0026] Figure 6 It is a structural diagram of a regulating valve in the prior art.

[0027] Figure markings: valve body 1; third limiting surface 11; through hole 12; valve plate 2; shaft body portion 21; first limiting surface 211; shaft hole 212; rotating shaft 213; second limiting surface 214; first connecting portion 215; large side portion 22; protruding portion 221; small side portion 23; air flow channel 3; adjusting knob 4; indicating protrusion 41; limiting tip 411; rotating portion 42; second connecting portion 43; annular protrusion 5; limiting teeth 51; valve body 1', valve plate 2'; rotating shaft 3'. DETAILED DESCRIPTION

[0028] The following will be combined with the 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.

[0029] This embodiment discloses a double-leaf regulating valve, which can be used to adjust the air volume in the air duct of the fresh air system. Adjusting the regulating valves in each air duct can make the air volume in each room relatively balanced, thereby realizing air volume control of the fresh air system.

[0030] Reference Figure 1-Figure 5 As shown, the dual-leaf regulating valve comprises a valve body 1, two valve plates 2, and two adjusting knobs 4. The valve body 1 is cylindrical in structure, with both ends extending through the interior to form an air flow passage 3. The two valve plates 2 are coaxially connected to the air flow passage 3 of the valve body 1. The two valve plates 2 are controlled by two adjusting knobs 4, respectively, to adjust the relative angle between the valve plates 2 and the valve body 1, thereby adjusting the flow of the air flow passage 3.

[0031] Reference Figure 2 、 Figure 4 As shown, the valve plate 2 includes a shaft portion 21, with a large side portion 22 and a small side portion 23 fixedly connected to either side of the shaft portion 21. The large side portion 22 of one valve plate 2 mates with the small side portion 23 of the other valve plate 2. The large side portions 22 and small side portions 23 of the two valve plates 2 form a Tai Chi-like shape. In the closed state, the two valve plates 2 are centrally symmetrical, with the center of symmetry coaxial with the valve plates 2.

[0032] Both the large side portion 22 and the small side portion 23 are plate-like structures, and their shapes are compatible with each other. In the same two valve plates 2, the large side portion 22 and the small side portion 23 are coplanar structures. In the closed state, the large side portions 22 and the small side portions 23 of the two valve plates 2 are parallel and coplanar, and can be combined to close the air flow channel 3 within the valve body 1, forming a nearly sealed state. In actual use, the fresh air control valve does not need to be completely sealed, so no other sealing structure is provided between the valve plate 2 and the valve body 1.

[0033] By rotating the regulating valve plate 2, the large side portion 22 and the small side portion 23 of the valve plate 2 will be offset, and the two valve plates 2 will not be able to close the air flow channel 3 in the valve body 1. By adjusting the rotation angle of the valve plate 2, the opening degree of the valve body 1 can be controlled. Figure 3 By rotating and adjusting the two valve plates 2, the valve body 1 can be controlled separately. By cooperating with the two valve plates 2, the air intake volume can be adjusted more accurately, which can improve the fineness of the regulating valve adjustment.

[0034] In a traditional single-valve plate regulating valve, the adjustment angle of the internal valve plate is from 0° to the maximum angle (generally 90°). Within the adjustment range, the corresponding adjustment range of the air flow channel is roughly 0% (almost closed) to 100% (maximum open). When the valve plate is adjusted within the range of 90°-180°, the flow channel of the air flow channel will be narrowed again. After exceeding 180°, the adjustment function of the valve plate is repeated.

[0035] During the adjustment process of the regulating valve in this embodiment, the first valve plate 2 can be rotated and adjusted. During the adjustment process, the maximum opening degree of the first valve plate 2 is approximately half of the maximum flow rate of the air flow channel 3. The second valve plate 2 can then be adjusted to adjust the flow rate of the other half of the air flow channel 3. In this embodiment, the air flow channel 3 can be adjusted in two steps from being nearly closed to being fully open, thereby improving the adjustment precision of the regulating valve and enabling more accurate adjustment of the opening degree of the air flow channel 3.

[0036] Reference Figure 4 As shown, the shaft portion 21 is located approximately at the center of the valve plate 2 and is integrally formed with the large side portions 22 and the small side portions 23 on either side. First limiting surfaces 211 are formed on opposite sides of the two shaft portions 21. The first limiting surfaces 211 of the two shaft portions 21 block and limit each other. The two valve plates 2 can be limited in position by the first limiting surfaces 211 of the shaft portions 21. Moreover, the first limiting surfaces 211 are perpendicular to the rotation axis of the valve plates 2. During relative rotation, the first limiting surfaces 211 of the shaft portions 21 can press and position the valve plates 2, maintaining stability during the adjustment process.

[0037] To maintain the structural stability of the two valve plates 2, an axial hole 212 may be defined in the first limiting surface 211 of one shaft body portion 21. A rotating shaft 213 is fixedly connected to the first limiting surface 211 of the other shaft body portion 21. The rotating shaft 213 is rotatably connected to the axial hole 212. The rotating shaft 213 and the axial hole 212 are both coaxially arranged with the rotation axis of the valve plates 2. During the rotation of the rotating shaft 213, the two valve plates 2 can be adapted to each other through the rotating shaft 213 and the axial hole 212, forming a coaxially rotatable connection structure.

[0038] In this embodiment, since the large side portion 22 and the small side portion 23 of the valve plate 2 are not in an axisymmetric structure, a structure similar to the Tai Chi shape is formed. Among them, the shape outline of the large side portion 22 of the valve plate 2 is slightly larger, and the shape outline of the small side portion 23 is slightly smaller. During the process of rotating and adjusting the valve plate 2, when the large side portions 22 of the two valve plates 2 approach each other, the large side portions 22 of the two valve plates 2 will contact and interfere with each other. Figure 3 、 Figure 5 shown.

[0039] Specifically, the large side portion 22 includes a protrusion 221. Along the axis of the shaft body 21, a portion of the protrusion 221 protrudes beyond the first limiting surface 211 of the shaft body 21. During relative rotation of the two valve plates 2, the protrusions 221 of the two valve plates 2 abut against each other, achieving a rotational linkage. Subsequently, as the valve plates 2 continue to be rotated and adjusted, the protrusions 221 of the two valve plates 2 transmit torque, driving the other valve plate 2 to rotate. The two valve plates 2 rotate synchronously, allowing both valve plates 2 to be adjusted simultaneously by controlling one valve plate 2.

[0040] During the adjustment process, the two valve plates 2 are closed (refer to Figure 1 、 Figure 4 As shown) start to adjust, rotate and adjust one of the valve plates 2, the valve plate 2 rotates to open the air flow channel 3 in the valve body 1 until the protrusions 221 of the two valve plates 2 are against each other (refer to Figure 5 Then, by continuing to rotate and adjust the valve plate 2, the other valve plate 2 can be driven to rotate as well. By continuing to rotate, the two valve plates 2 can be opened to the maximum extent, thereby achieving joint control of the two valve plates 2.

[0041] Furthermore, a second limiting surface 214 is formed on the opposite sides of the two shaft portions 21, and two third limiting surfaces 11 are formed on the inner wall of the valve body 1. The two third limiting surfaces 11 respectively abut against the two shaft portions 21 to achieve position limiting. The first limiting surface 211, the second limiting surface 214, and the third limiting surfaces 11 are all parallel to each other. By abutting against each other, the two valve plates 2 and the valve body 1 can be axially pressed and limited, ensuring stable installation of the two valve plates 2.

[0042] The two valve plates 2 are controlled by two adjusting knobs 4 respectively, which can adjust the relative angle between the valve plate 2 and the valve body 1, adjust the on-off of the air flow channel 3, and control the air intake volume of the regulating valve.

[0043] A first connecting portion 215 is provided on the rear side of each shaft portion 21, and a second connecting portion 43 is fixed to the adjustment knob 4. The first connecting portion 215 and the second connecting portion 43 interlock, allowing the shaft portion 21 and the corresponding adjustment knob 4 to rotate synchronously. Specifically, the first connecting portion 215 is a connecting hole defined in the second limiting surface 214, and the second connecting portion 43 is a connecting shaft integrally formed with the adjustment knob 4. The connecting hole and the connecting shaft interlock. The connecting hole and the connecting shaft can adopt a hexagonal structure to transmit torque and maintain synchronous rotation, or they can be bonded and fixed with glue.

[0044] The adjusting knob 4 is located outside the valve body 1 and is fixedly connected to a rotating portion 42. The rotating portion 42 is cylindrical and rotatably engages a through-hole 12 defined in the sidewall of the valve body 1. During installation, the rotating portion 42 of the adjusting knob 4 passes through the through-hole 12 and is rotationally connected thereto, forming a rotational connection between the adjusting knob 4 and the valve body 1.

[0045] Two annular protrusions 5 are fixedly connected to the outside of the valve body 1 , and the annular protrusions 5 are substantially coaxial with the through hole 12 . Two adjusting knobs 4 are respectively located on the inner periphery of the two annular protrusions 5 .

[0046] Two indicator bumps 41 are fixedly connected to either side of the adjustment knob 4. The orientation of the two indicator bumps 41 corresponds to the position of the valve plate 2. In this embodiment, the two indicator bumps 41 correspond to the positions of the large side portion 22 and the small side portion 23, respectively. By checking the positions of the two indicator bumps 41, the adjustment position of the valve plate 2 can be determined, facilitating adjustment and control of the position of the valve plate 2.

[0047] In order to maintain the adjustment position stability of the adjustment knob 4, a damping structure can be set between the inner periphery of the annular protrusion 5 and the adjustment knob 4, which can keep the adjustment knob 4 stable when stationary to avoid vibration deflection, and can be flexibly rotated and adjusted when adjusted.

[0048] Specifically, a plurality of limiting teeth 51 distributed in an annular array are formed on the inner circumference of each annular protrusion 5, and an indicating protrusion 41 is fixedly connected to the adjusting knob 4, which forms a limiting tip 411. The limiting tip 411 and the limiting teeth 51 are adapted to each other, and the limiting tip 411 can be embedded between two limiting teeth 51, thereby maintaining the position of the adjusting knob 4 stable. During adjustment, by forcefully rotating the adjusting knob 4, the limiting tip 411 and the limiting teeth 51 can produce a slight elastic deformation, thereby allowing the limiting tip 411 to move out of the current position between the two limiting teeth 51, thereby achieving rotational adjustment and forming an adjustment damping effect during the adjustment process.

[0049] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A double-leaf regulating valve, characterized in that: The invention comprises a valve body (1), two valve plates (2) and two adjusting knobs (4); an air flow passage (3) is provided in the valve body (1); the two valve plates (2) are coaxially rotatably connected to the air flow passage (3) of the valve body (1); the air flow passage (3) can be regulated on and off by rotating the valve plates (2); the two adjusting knobs (4) are respectively mounted on the two valve plates (2) and are used to rotate and adjust the two valve plates (2) respectively; the valve plates (2) comprise a shaft portion (21); a large side portion (22) and a small side portion (23) are respectively fixedly connected on both sides of the shaft portion (21); the large side portion (22) of one valve plate (2) and the small side portion (23) of the other valve plate (2) are adapted to each other.

2. A double-leaf regulating valve according to claim 1, characterized in that: A first limiting surface (211) is formed on one side opposite to the two shaft bodies (21), and the first limiting surfaces (211) of the two shaft bodies (21) block and limit each other.

3. A double-leaf regulating valve according to claim 2, characterized in that: The first limiting surface (211) of one shaft body portion (21) is provided with a shaft hole (212), and the first limiting surface (211) of the other shaft body portion (21) is fixedly connected to a rotating shaft (213), and the rotating shaft (213) is rotatably connected in the shaft hole (212).

4. A double-leaf regulating valve according to claim 3, characterized in that: The rotating shaft (213) and the shaft hole (212) are both coaxially arranged with the rotating axis of the valve plate (2).

5. A double-leaf regulating valve according to claim 2, characterized in that: The two valve plates (2) are of a centrally symmetrical structure; during the relative rotation of the two valve plates (2), the large side portions (22) of the two valve plates (2) can abut against each other to achieve rotational linkage.

6. A double-leaf regulating valve according to claim 5, characterized in that: The large side portion (22) includes a protruding portion (221), and along the axial direction of the shaft body portion (21), a portion of the protruding portion (221) protrudes from the first limiting surface (211) of the shaft body portion (21); during the relative rotation of the two valve plates (2), the protruding portions (221) of the two valve plates (2) can offset each other to achieve rotation linkage.

7. The double-leaf regulating valve according to claim 1, characterized in that: A second limiting surface (214) is formed on the back side of the two shaft parts (21), and two third limiting surfaces (11) are formed on the inner wall of the valve body (1). The two third limiting surfaces (11) respectively abut against the two shaft parts (21) to achieve limiting.

8. The double-leaf regulating valve according to claim 1, characterized in that: A first connecting portion (215) is provided on the back side of the two shaft bodies (21), and a second connecting portion (43) is fixedly provided on the adjusting knob (4). The first connecting portion (215) and the second connecting portion (43) are plugged into each other, and the shaft body (21) and the corresponding adjusting knob (4) can rotate synchronously.

9. The double-leaf regulating valve according to claim 1, characterized in that: Part of the regulating knob (4) is located outside the valve body (1), the regulating knob (4) is fixedly connected to a rotating portion (42), a through hole (12) is opened on the side wall of the valve body (1), and the rotating portion (42) of the regulating knob (4) passes through the through hole (12) and is rotatably connected to the through hole (12); The exterior of the valve body (1) is fixedly connected to two annular protrusions (5), and two adjusting knobs (4) are respectively located on the inner peripheries of the two annular protrusions (5); the inner peripheries of the two annular protrusions (5) are formed with a plurality of limiting teeth (51) distributed in an annular array; the adjusting knob (4) is fixedly connected to an indicating protrusion (41), and the indicating protrusion (41) forms a limiting tip (411), and the limiting tip (411) is adapted to the limiting teeth (51) to achieve damping limiting.

10. A double-leaf regulating valve according to claim 9, characterized in that: Two indicating protrusions (41) are fixedly connected to both sides of the adjusting knob (4), and the arrangement positions of the two indicating protrusions (41) correspond to the positions of the large side portion (22) and the small side portion (23).

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