A flapper valve device

Abstract

The utility model discloses a kind of flap valves, belong to gas flow detection technical field, specifically related to a kind of flap valve device, comprising: frame, stepper motor, extension arm, support, flap, thick pipe air inlet pipe mouth and thin tube air inlet pipe mouth;Stepper motor, support fixed installation in frame, flap rotation is installed on support, one end of extension arm is sleeved on the rotating shaft of stepper motor, the other end is contacted with flap and swing on flap, and top bead and spring are equipped in the bottom of its extension arm;The utility model has the advantages of simple structure, mature technology, high reliability, low cost, high security, etc., especially in the occasion (such as petroleum, chemical industry, natural gas) and cost-sensitive occasion that security, explosion-proof requirement is extremely high, spring compression scheme of the utility model is first choice.

Description

Technical Field

[0001] This utility model discloses a rocker valve, belonging to the field of flow detection technology, specifically relating to a rocker valve device. Background Technology

[0002] Traditional rocker control valves are common fluid path switching devices. Their core principle utilizes a rocker (lever) structure that rotates around a fulcrum. When an external force (such as manual pressing or a mechanical pusher) is applied to one end of the rocker, the other end drives a valve core (such as a sealing plug or slider) to move, thereby opening or closing a specific fluid path and switching between two or more flow paths (such as normally open / normally closed). This structure is widely used in automotive HVAC damper control, hot and cold water dispensing in water dispensers, and small household fluid control due to its simplicity, reliability, and clearly defined switching states (usually only two steady states: open and closed). However, its reliance on external mechanical force limits its application in automation, remote control, or space-constrained situations.

[0003] The magnetic rocker control valve structure is a common type of control valve structure in existing technology, such as patent number: 202010871848.7, patent name: A rocker control valve. Traditional magnetic rocker valve structures have the following problems:

[0004] 1. The magnet structure is susceptible to high temperatures; when the Curie temperature is exceeded, permanent demagnetization will occur.

[0005] 2. The magnetic structure has the disadvantage of low impact resistance, which can lead to the magnet breaking.

[0006] 3. The magnetic structure is susceptible to external magnetic field interference, resulting in high maintenance costs in the later stages.

[0007] 4. The closing force is determined by the specifications of the magnet, and it is difficult to adjust the magnetic force once the manufacturing is completed.

[0008] 5. The magnetic structure poses a safety risk. In flammable and explosive environments, the rapid attraction of the magnets may generate sparks, requiring special explosion-proof design, which increases costs.

[0009] 6. Because the magnetic force changes non-linearly with distance (inversely proportional to the square of the distance), the attraction increases sharply when people get close. Utility Model Content

[0010] Purpose of the utility model: To provide a rocker valve device to solve the problems mentioned above.

[0011] Technical solution: A rocker valve device, comprising: a frame, a stepper motor, an extension arm, a bracket, a rocker, a coarse air inlet and a fine air inlet;

[0012] The stepper motor is fixedly installed inside the frame. One end of the extension arm is sleeved on the rotating shaft of the stepper motor. The bracket is fixedly installed inside the frame. The thick air inlet and the thin air inlet are connected inside the frame and are located on both sides of the bracket respectively. The rocker is rotatably installed on the bracket. The other end of the extension arm contacts the rocker and swings on the rocker.

[0013] In a further embodiment, the other end of the extension arm is provided with a mounting groove, the spring and the top ball are installed in the mounting groove, and the top ball cooperates with the rocker to move the extension arm on the rocker.

[0014] In a further embodiment, one end of the extension arm is provided with a fixing hole, and the shaft of the stepper motor is sleeved in the fixing hole through a bearing.

[0015] In a further embodiment, the diameter of the coarse inlet is larger than the diameter of the thin inlet.

[0016] In a further embodiment, the rocker is provided with hemispherical valves at both ends that cooperate with the coarse air inlet and the fine air inlet.

[0017] In a further embodiment, the coarse-pipe air inlet and the fine-pipe air inlet are provided with sealing rings.

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

[0019] 1. The force of a spring follows Hooke's Law, and is linear and predictable, making it easy to adjust the closing force and stroke by changing to different sizes of springs;

[0020] 2. High safety, especially in applications with extremely high requirements for safety and explosion protection (such as oil, chemical, and natural gas) and cost-sensitive applications, where springs offer even greater safety.

[0021] 3. Springs are very mature standard parts, with advantages such as simple structure, mature technology, high reliability and low cost.

[0022] 4. It can prevent the risk of interference from external magnetic fields and can work stably in high temperature and strong magnetic field environments. Attached Figure Description

[0023] Figure 1 This is an isometric drawing of this utility model.

[0024] Figure 2 This is a top view of the present invention.

[0025] Figure 3 This is a cross-sectional view of the extension arm of this utility model.

[0026] Figure 4 This is a cross-sectional view of the present invention.

[0027] Figure 5 This is a schematic diagram of the extension arm spring and top ball compression of this utility model.

[0028] Reference numerals in the attached diagram: Frame 1, Stepper motor 2, Extending arm 3, Bracket 4, Rocker 5, Thick air inlet 6, Thin air inlet 7, Top ball 8, Spring 9, Fixing hole 10. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0032] A rocker valve device includes: a frame 1, a stepper motor 2, an extension arm 3, a bracket 4, a rocker 5, a thick air inlet 6, and a thin air inlet 7.

[0033] In one embodiment, such as Figures 1 to 3As shown, the stepper motor 2 is fixedly installed inside the frame 1, one end of the extension arm 3 is sleeved on the rotating shaft of the stepper motor 2, the bracket 4 is fixedly installed inside the frame 1, the thick air inlet 6 and the thin air inlet 7 are connected inside the frame 1 and are respectively located on both sides of the bracket 4, the rocker 5 is rotatably installed on the bracket 4, and the other end of the extension arm 3 contacts the rocker 5 so that the extension arm swings on the rocker 5;

[0034] The other end of the extension arm 3 is provided with a top bead 8 and a spring 9.

[0035] Specifically, such as Figures 4 to 5 As shown, one end of the extension arm 3 is equipped with a top ball 8 and a spring 9. The top ball 8 is 0.8mm higher than the lower plane of the extension arm 3. When the stepper motor 2 drives the extension arm 3 to rotate and it is parallel to the hemispherical valve surface of the rocker plate 5 with a gap of 0.3mm, the top ball 8 is also 0.3mm higher than the lower plane of the extension arm 3, thus compressing the spring 9 by 0.5mm. Therefore, the vertical pressure of the hemispherical valve of the rocker plate 5 on the sealing ring of the coarse pipe inlet can be calculated as follows:

[0036] According to Wu Ke's law of springs, F = -(K*X);

[0037] Where F represents the elastic force, in Newtons (N), K represents the spring constant, also known as the stiffness coefficient, in Newtons per meter (N / m), and X represents the spring deformation, in meters (m), which is the difference between the actual length of the spring and its original length.

[0038] - This indicates that the direction of the elastic force is opposite to the direction of deformation (when the spring is compressed, the direction of the elastic force is outward; when it is stretched, the direction of the elastic force is inward).

[0039] More specifically, F = 5 N; stiffness coefficient: K = 10000 N / m;

[0040] Compression amount: X = F / K = 5 ÷ 10000 N / m = 0.5 mm.

[0041] In one embodiment, such as Figures 1 to 3 As shown, the other end of the extension arm 3 is provided with a mounting groove, the spring 9 and the top ball 8 are installed in the mounting groove, the top ball 8 cooperates with the rocker 5 and moves on the rocker 5.

[0042] In one embodiment, such as Figures 1 to 3 As shown, one end of the extension arm 3 is provided with a fixing hole 10, and the rotating shaft of the stepper motor 2 is sleeved in the fixing hole 10 through a bearing.

[0043] In one embodiment, such as Figures 1 to 3As shown, the diameter of the coarse-tube air inlet 6 is larger than the diameter of the thin-tube air inlet 7.

[0044] In one embodiment, such as Figures 1 to 3 As shown, the rocker plate 5 is provided with hemispherical valves at both ends that cooperate with the coarse pipe inlet 6 and the thin pipe inlet 7.

[0045] In one embodiment, such as Figures 1 to 3 As shown, both the coarse-pipe air inlet and the fine-pipe air inlet are equipped with sealing rings.

[0046] Working principle: When this utility model is in operation, the valve body is first installed in the pipeline. Then, when it is necessary to open the thick or thin pipe, the stepper motor 2 works and drives the extension arm 3 to swing through the rotation of the shaft. As the extension arm 3 is driven, the top ball 8 moves on the rocker plate 5. As the direction of movement increases, the pressure on the rocker plate 5 in this direction increases, which then drives the rocker plate 5 to rotate on the bracket 4. Thus, the hemispherical valves at both ends of the rocker plate 5 seal the air inlet 6 of the thick pipe or the air inlet 7 of the thin pipe.

[0047] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A rocker valve device, characterized in that, include: Frame, stepper motor, extension arm, bracket, rocker, thick air inlet and thin air inlet; The stepper motor is fixedly installed inside the frame. One end of the extension arm is sleeved on the rotating shaft of the stepper motor. The bracket is fixedly installed inside the frame. The thick air inlet and the thin air inlet are connected inside the frame and are located on both sides of the bracket, respectively. The rocker is rotatably installed on the bracket. The other end of the extension arm has a mounting groove at its bottom, and a top ball and a spring are provided in the mounting groove. The top ball contacts the rocker to make the extension arm swing on the rocker.

2. The rocker valve device according to claim 1, characterized in that, The spring in the mounting slot is set with the required pressure according to Wu Ke's law, which is transmitted to the top bead to cooperate with the rocker plate and move on the rocker plate.

3. The rocker valve device according to claim 1, characterized in that, One end of the extension arm is provided with a fixing hole, and the shaft of the stepper motor is sleeved in the fixing hole through a bearing.

4. The rocker valve device according to claim 1, characterized in that, The diameter of the thicker inlet is larger than the diameter of the thinner inlet.

5. The rocker valve device according to claim 1, characterized in that, The rocker arm is equipped with hemispherical valves at both ends that cooperate with the coarse air inlet and the fine air inlet.

6. The rocker valve device according to claim 1, characterized in that, Both the coarse-pipe air inlet and the fine-pipe air inlet are equipped with sealing rings.

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