Fresh air system speed regulating valve

Abstract

The fresh air system speed regulating valve comprises a valve body, a valve plate and a rotary knob, openings are formed in the two ends of the valve body, the valve body is fixedly connected with a rotating shaft, the valve body is rotationally connected into the valve body through the rotating shaft, the periphery of the valve body is fixedly connected with a convex ring part, and the rotary knob is rotationally connected to the convex ring part. The rotary knob is fixedly connected with a connecting shaft, and the connecting shaft is connected with a rotating shaft of the valve body and can rotate synchronously with the rotating shaft of the valve body. The inner circumference of the convex ring part is provided with a corrugated structure which is annularly distributed, the outer circumference of the knob is provided with an elastic piece, the elastic piece can elastically deform in the radial direction of the convex ring part, convex teeth are formed on one side of the convex ring part of the elastic piece, and the convex teeth are matched with the corrugated structure; and at least part of the convex teeth can be elastically embedded into the corrugated structure. The air inlet quantity of the speed regulating valve can be stably and accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and more specifically, to a speed regulating valve for a fresh air system. Background Art

[0002] In the fresh air system, the air boxes and the pipes are connected by various accessories. Depending on the functional requirements, some of the connecting accessories need to be connected using a speed control valve. The speed control valve is used to control the opening and closing of each air duct. By controlling the opening size of the air duct, the amount of air intake can be changed to meet the various functions of the fresh air system. When switching the air volume, the existing speed control valve cannot accurately control the opening size of the air duct. Generally, a positioning structure is only set at the fully open and fully closed positions, so that the speed control valve can be relatively stably maintained in the two positions of fully open and fully closed. In the middle position, there is no limiting structure. During operation, it is easily affected by airflow and vibration, resulting in angle fluctuations, which in turn causes the air volume of the speed control valve to change, causing trouble for the normal operation of the fresh air system.

[0003] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a fresh air system speed regulating valve that can stably and accurately control the air intake volume of the speed regulating valve.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fresh air system speed regulating valve comprises a valve body, a valve plate and a knob, wherein openings are provided at both ends of the valve body, the valve body is fixedly connected to a rotating shaft, the valve body is rotatably connected to the valve body via the rotating shaft, the outer periphery of the valve body is fixedly connected to a convex ring portion, the knob is rotatably connected to the convex ring portion, the knob is fixedly connected to a connecting shaft, the connecting shaft is connected to the rotating shaft of the valve body and can realize synchronous rotation; the inner periphery of the convex ring portion is provided with a corrugated structure distributed in a ring shape, the outer periphery of the knob is provided with an elastic member, the elastic member can be elastically deformed along the radial direction of the convex ring portion, a convex tooth is formed on one side of the convex ring portion of the elastic member, the convex tooth is adapted to the corrugated structure, and at least part of the convex tooth can be elastically embedded in the corrugated structure.

[0007] The present invention is further configured such that the elastic member and the knob are integrally injection-molded, the elastic member comprises a connecting end and an elastic end, the connecting end is connected to the knob, and the elastic end can be elastically bent and deformed relative to the knob.

[0008] The present invention is further configured such that at least a portion of the knob is embedded in the inner circumference of the convex ring portion, and the knob is fixedly connected to the handle portion.

[0009] The present invention is further configured such that a stopper is fixedly connected to the end face of the convex ring portion, and a limiting protrusion is fixedly connected to the outer periphery of the knob. The limiting protrusion and the stopper block and fit with each other to limit the rotation stroke of the knob.

[0010] The present invention is further configured such that there are two stops, namely stopper one and stopper two, and there are also two limit protrusions, namely stopper one and limit protrusion two. Stopper one is adapted to block limit protrusion one, and stopper two is adapted to block limit protrusion two, thereby achieving limit at both ends of the rotation stroke of the knob.

[0011] The present invention is further configured such that the convex ring portion is provided with circumferentially distributed identification portions, and the knob is provided with identification arrows, which are adapted to the identification portions.

[0012] The utility model is further configured such that a flat portion is formed at one end of the connecting shaft facing away from the knob, and the flat portion is axially inserted into the rotating shaft to achieve rotational limiting; the valve body is provided with an axial hole, and the rotating shaft of the valve plate is rotatably connected to the axial hole.

[0013] The utility model is further configured such that two valve plates are provided, the rotating shafts of the two valve plates are both rotatably connected to the valve body, and the two valve plates cooperate with each other to realize the opening and closing adjustment of the valve body.

[0014] The present invention is further configured such that the knob is connected to a rotating shaft of a valve plate, and meshing portions are provided outside the rotating shafts of the two valve plates, and the two rotating shafts mesh with each other for transmission.

[0015] The present invention is further configured such that two groups of the convex ring portion and the knob are provided, respectively located on both sides of the valve body.

[0016] In summary, the present invention has the following beneficial effects:

[0017] The valve plate is rotatably connected to the valve body, and the knob is rotatably installed outside the valve body, and the knob and the rotating shaft of the valve plate are connected to each other. By adjusting the knob, the valve plate can be driven to realize rotation adjustment, which can switch between blocking air circulation and unobstructed air circulation, and is easy to use and operate; and, by providing a damping elastic limiting structure between the knob and the valve body, the rotation position of the knob can be stably limited, and then the rotation position of the valve plate is limited by damping, ensuring that the valve plate can remain stable at each rotation angle, thereby being able to more accurately control the rotation angle of the knob and better control the amount of air in and out.

[0018] By designing a rotation angle marking portion on the outside of the valve body, the opening and closing angle of the page can be clearly reflected to the operator when rotating the knob; and limit structures are set at both ends of the knob's rotation stroke, which can facilitate the operator's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of a fresh air system speed regulating valve in this embodiment;

[0020] Figure 2 This is a cross-sectional view of a fresh air system speed regulating valve in this embodiment;

[0021] Figure 3 2 is a front view of the valve body in this embodiment;

[0022] Figure 4 Schematic diagram of the structure of the valve body and the knob in this embodiment;

[0023] Figure 5 for Figure 4 A magnified view of point A in the figure;

[0024] Figure 6 is a three-dimensional diagram of the knob 3 in this embodiment;

[0025] Figure 7 for Figure 6 Enlarged view of point B in FIG.

[0026] Figure 8 Schematic diagram of the structure of the valve plate in this embodiment.

[0027] Figure numerals: valve body 1; opening 11; convex ring portion 12; identification portion 121; corrugated structure 122; stopper 1 123; stopper 2 124; shaft hole 13; valve plate 2; rotating shaft 21; meshing portion 22; knob 3; handle portion 31; identification arrow 311; limiting protrusion 1 312; limiting protrusion 2 313; peripheral portion 32; notch 321; elastic member 322; protruding tooth 323; connecting shaft 33; flat portion 34. 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 fresh air system speed regulating valve, referring to Figure 1 、 Figure 2As shown, it includes a valve body 1, a valve plate 2, and a knob 3. Openings 11 are provided at both ends of the valve body 1, forming an axially extending passageway within the valve body 1. The valve plate 2 is mounted within the inner cavity of the valve body 1 and is rotatably connected to the valve body 1 via a rotating shaft 21. The knob 3 is mounted outside the valve body 1 and connected to the rotating shaft 21 of the valve plate 2. Rotating the knob 3 controls the valve plate 2, thereby achieving opening and closing control of the valve body 1. By controlling the rotation and floating of the valve plate 2, the opening size of the valve body 1 can be controlled to adjust the air velocity in the air duct.

[0030] Reference Figures 1-4 As shown, a convex ring portion 12 is fixedly connected to the outer periphery of the valve body 1 , and the knob 3 is rotatably connected to the convex ring portion 12 . The convex ring portion 12 can rotatably support the knob 3 to maintain smooth rotation of the knob 3 .

[0031] The valve body 1 is fixedly connected to a rotating shaft 21, and the valve body 1 is rotatably connected to the valve body 1 via the rotating shaft 21. A shaft hole 13 is opened in the side wall of the valve body 1, and the end of the rotating shaft 21 of the valve plate 2 extends into the shaft hole 13, forming a rotating connection structure, thereby enabling the valve plate 2 to achieve smooth rotation and adjustment.

[0032] Reference Figure 4 、 Figure 6 As shown, the knob 3 is fixedly connected to a connecting shaft 33, which is connected to the rotating shaft 21 of the valve body 1 and can achieve synchronous rotation. A flat portion 34 is formed at the end of the connecting shaft 33 facing away from the knob 3. The flat portion 34 has a generally square structure and is axially inserted into the rotating shaft 21 to limit rotation.

[0033] Reference Figure 3 、 Figure 4 、 Figure 5 As shown, the convex ring portion 12 protrudes from the outer periphery of the valve body 1, and at least a portion of the knob 3 is embedded in the inner periphery of the convex ring portion 12. The inner periphery of the convex ring portion 12 is generally circular, and the outer periphery of the knob 3 is also generally circular. The knob 3 and the convex ring portion 12 are adapted to each other, and the knob 3 can be smoothly rotated and adjusted within the convex ring portion 12.

[0034] A handle portion 31 is fixedly connected to the outside of the knob 3 . The handle portion 31 and the knob 3 are integrally injection-molded, and the handle portion 31 protrudes from the convex ring portion 12 . The handle portion 31 is convenient for an operator to hold and operate.

[0035] The inner circumference of the raised ring portion 12 is provided with an annularly distributed corrugated structure 122, which is composed of wavy teeth. An elastic member 322 is provided on the outer circumference 32 of the knob 3. This elastic member 322 is elastically deformable along the radial direction of the raised ring portion 12. A protruding tooth 323 is formed on one side of the raised ring portion 12. The protruding tooth 323 mates with the corrugated structure 122. When the knob 3 is inserted into the raised ring portion 12, a portion of the protruding tooth 323 can be embedded in the corrugated structure 122.

[0036] During the rotation and adjustment process of the knob 3, the convex teeth 323 and the corrugated structure 122 press against each other, pushing the part of the elastic member 322 to elastically deform in the inner circumferential direction, so that the convex teeth 323 can be rotated and adjusted along the corrugated structure 122. When the knob 3 is rotated, the convex teeth 323 can enter the various recesses of the corrugated structure 122 in turn, forming a certain damping feeling, and each protrusion of the corrugated structure 122 can locate the position of the knob 3, ensuring that the knob 3 can remain stable at each angle position, thereby being able to accurately control the opening angle of the valve plate 2 and better control the amount of air intake.

[0037] Reference Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 As shown, the elastic member 322 and the knob 3 are integrally injection molded. The elastic member 322 includes a connecting end 3221 and an elastic end 3222. The connecting end 3221 is integrally connected to the knob 3, and the elastic end 3222 is capable of elastically bending and deforming relative to the knob 3. This deformation is achieved through the elastic properties of the elastic member 322 material. Specifically, a notch 321 is defined in the outer circumference 32 of the knob 3, and the elastic member 322 is positioned within the notch 321 of the outer circumference 32. The relatively thin thickness of the elastic member 322 allows for stable elastic deformation.

[0038] Reference Figure 3 、 Figure 4 As shown, a stopper is fixedly connected to the end surface of the convex ring portion 12, and a limit projection is fixedly connected to the outer periphery of the knob 3. The limit projection and the stopper block and adapt to each other to limit the rotational travel of the knob 3. One end of the rotational travel of the knob 3 indicates the closed state of the valve body 1, while the other end of the travel indicates the fully open state of the valve body 1.

[0039] Specifically, there are two blocks, namely block 123 and block 2 124, and there are also two limit protrusions, namely limit protrusion 1 312 and limit protrusion 2 313. The block 123 is blocked and adapted with the limit protrusion 1 312, and the block 2 124 is blocked and adapted with the limit protrusion 2 313, which can form two travel limit points and realize the limit at both ends of the rotation travel of the knob 3.

[0040] Reference Figure 3 、 Figure 4As shown, an identification portion 121 is machined into the outer end surface of the convex ring portion 12. The identification portions 121 are arranged circumferentially and at approximately 90° angles. An identification arrow 311 is machined into the surface of the knob 3, which mates with the identification portion 121. The combination of the identification arrow 311 and the identification portion 121 facilitates checking the opening position of the valve body 1. The identification portion 121 and the identification arrow 311 can have concave and convex patterns, forming the surface of the integrally molded component during the injection molding process.

[0041] Reference Figure 8 As shown, two valve plates 2 are provided, and the rotating shafts 21 of both valve plates 2 are rotatably connected to the valve body 1. The two valve plates 2 cooperate with each other to achieve opening and closing adjustment of the valve body 1. The knob 3 is connected to the rotating shaft 21 of one of the valve plates 2. The rotating shafts 21 of the two valve plates 2 are integrally machined with a meshing portion 22. The meshing portion 22 adopts a gear-like structure, which can form a mutually meshing transmission structure between the two rotating shafts 21.

[0042] When one valve plate 2 rotates, the two rotating shafts 21 engage with each other, allowing both valve plates 2 to rotate simultaneously in opposite directions. The two valve plates 2 can achieve synchronous movement, enabling the valve body 1 to be opened and closed. Furthermore, corresponding axial holes 13 are provided in the sidewalls of the valve body 1, enabling the valve plates 2 to rotate and form a rotating support.

[0043] Reference Figure 1 、 Figure 2 As shown, two sets of convex rings 12 and knobs 3 are provided, one on each side of the valve body 1, enabling rotational control on both sides of the valve body 1. The two convex rings 12 are coaxial and integrally formed on both sides of the valve body 1. The two knobs 3 are respectively installed in the two convex rings 12 and installed on both sides of the valve body 1.

[0044] 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 fresh air system speed regulating valve, characterized in that: The invention comprises a valve body (1), a valve plate (2) and a knob (3), wherein both ends of the valve body (1) are provided with openings (11), the valve body (1) is fixedly connected to a rotating shaft (21), the valve body (1) is rotatably connected to the valve body (1) via the rotating shaft (21), the outer periphery of the valve body (1) is fixedly connected to a convex ring portion (12), the knob (3) is rotatably connected to the convex ring portion (12), the knob (3) is fixedly connected to a connecting shaft (33), the connecting shaft (33) is connected to the rotating shaft (21) of the valve body (1), and can realize The knob (3) is provided with an elastic member (322) on the outer periphery (32) of the knob (3), and the elastic member (322) can be elastically deformed along the radial direction of the convex ring portion (12). A convex tooth (323) is formed on one side of the convex ring portion (12) of the elastic member (322), and the convex tooth (323) is adapted to the convex structure (122). At least a portion of the convex tooth (323) can be elastically embedded in the convex structure (122).

2. A fresh air system speed regulating valve according to claim 1, characterized in that: The elastic member (322) is integrally injection-molded with the knob (3); the elastic member (322) comprises a connecting end (3221) and an elastic end (3222); the connecting end (3221) is connected to the knob (3); and the elastic end (3222) is capable of elastically bending and deforming relative to the knob (3).

3. A fresh air system speed regulating valve according to claim 1, characterized in that: At least a portion of the knob (3) is embedded in the inner periphery of the convex ring portion (12), and the knob (3) is fixedly connected to a handle portion (31).

4. A fresh air system speed regulating valve according to claim 1, characterized in that: A stopper is fixedly connected to the end surface of the convex ring portion (12), and a limiting protrusion is fixedly connected to the outer periphery of the knob (3). The limiting protrusion and the stopper block and fit with each other to limit the rotation stroke of the knob (3).

5. A fresh air system speed regulating valve according to claim 4, characterized in that: There are two stoppers, namely stopper one (123) and stopper two (124), and there are two limit protrusions, namely stopper one (312) and limit protrusion two (313). Stopper one (123) is adapted to block stopper one (312), and stopper two (124) is adapted to block stopper two (313), thereby achieving limit stopper at both ends of the rotation stroke of the knob (3).

6. A fresh air system speed regulating valve according to claim 1, characterized in that: The convex ring portion (12) is provided with circumferentially distributed identification portions (121), and the knob (3) is provided with an identification arrow (311), and the identification arrow (311) is adapted to the identification portion (121).

7. A fresh air system speed regulating valve according to claim 1, characterized in that: The end of the connecting shaft (33) facing away from the knob (3) forms a flat portion (34), and the flat portion (34) is axially inserted into the rotating shaft (21) to achieve rotational limit; the valve body (1) is provided with an axial hole (13), and the rotating shaft (21) of the valve plate (2) is rotatably connected to the axial hole (13).

8. A fresh air system speed regulating valve according to claim 1, characterized in that: There are two valve plates (2), and the rotating shafts (21) of the two valve plates (2) are both rotatably connected to the valve body (1). The two valve plates (2) cooperate with each other to achieve opening and closing adjustment of the valve body (1).

9. A fresh air system speed regulating valve according to claim 8, characterized in that: The knob (3) is connected to a rotating shaft (21) of a valve plate (2); meshing portions (22) are provided outside the rotating shafts (21) of the two valve plates (2); and the two rotating shafts (21) mesh with each other for transmission.

10. A fresh air system speed regulating valve according to any one of claims 1 to 9, characterized in that: The convex ring portion (12) and the knob (3) are each provided in two groups, and are respectively located on both sides of the valve body (1).

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