Manual adjusting air valve with limiting function

Abstract

The manual adjusting air valve with the limiting function comprises a valve body, a valve plate and a limiting adjuster, the limiting adjuster comprises an upper rotating bearing, a limiting plate, a limiting handle, a rotating shaft and a lower rotating bearing, the valve body is in a hollow rectangular shape, the valve plate is located in the valve body, the rotating shaft is located on the center line of the valve body, and the limiting plate is located on the limiting handle. The rotating shaft is fixedly connected with the valve body, the top of the rotating shaft penetrates through the upper rotating bearing, the bottom of the rotating shaft penetrates through the lower rotating bearing, the limiting plate is fan-shaped, limiting holes are distributed in the limiting plate, the limiting handle comprises an upper handle, a spring, a lower handle, a limiting pin and a connecting shaft, the upper handle and the lower handle are connected through the connecting shaft, the limiting pin penetrates through the lower handle, and the spring is located between the upper handle and the lower handle. And the limiting pin is sleeved with the sleeve. The utility model discloses a manual adjusting air valve with a limiting function. The device has the advantages of simple structure, convenience in use, safety and reliability.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating, ventilation and air conditioning equipment, and in particular relates to a manually adjustable air valve with a limiting function. Background Art

[0002] Manual dampers are commonly used as accessories for building air conditioning and ventilation systems. They typically consist of a valve body, a valve disc, and an adjustment handle. The handle adjusts the angle of the valve disc to control its opening, thereby varying the ventilation volume in the duct. Due to their simple structure and rigorous quality control, manual dampers are highly reliable. They can operate stably in harsh environmental conditions, such as high temperatures, low temperatures, and high humidity. Manual dampers are very simple to operate; air volume can be adjusted simply by turning the handle. Therefore, no special skills or tools are required; anyone can operate them. However, during use, due to the high air velocity in the duct, the valve disc opening can fluctuate over time at high wind speeds, resulting in unstable air volume. Utility Model Content

[0003] In order to solve the problem of the valve body opening changing during long-term use of a manually adjustable air valve, the utility model discloses a manually adjustable air valve with a limit function, which has the advantages of simple structure, easy use, safety and reliability.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A manually adjustable air valve with a limiting function comprises a valve body, a valve plate, and a limit adjuster. The limit adjuster comprises an upper rotary bearing, a limit plate, a limit handle, a rotary shaft, and a lower rotary bearing. The valve body is a hollow rectangle. The valve plate is located inside the valve body. The rotary shaft is located on the center line of the valve body and is fixedly connected to the valve body. The top of the rotary shaft passes through the upper rotary bearing and the bottom passes through the lower rotary bearing. The limit plate is fan-shaped and has limited holes distributed thereon. The limit handle comprises an upper handle, a spring, a lower handle, a limit pin, and a connecting shaft. The upper handle and the lower handle are connected by a connecting shaft. The limit pin passes through the lower handle. The spring is located between the upper handle and the lower handle and is sleeved on the limit pin.

[0006] Furthermore, the top of the spring is fixed to the upper handle, and the lower part is fixed to the limit pin, and the limit pin can move up and down with the spring.

[0007] Furthermore, the valve plate is provided with reinforcing ribs, and the number of the reinforcing ribs is one or more.

[0008] Furthermore, there are multiple limiting holes, which are arranged in an arc shape on the limiting plate with an arrangement spacing of 10-20°.

[0009] Furthermore, sealing gaskets are provided around the valve plate.

[0010] The manual regulating air valve with a limiting function described in the utility model is connected to the pipeline through a flange during use. When the valve is opened to a certain opening, the limiting pin will be inserted into the limiting hole to fix the rotating shaft. At this time, the valve plate connected to the rotating shaft is also fixed and will no longer change under high wind speed. The opening is limited. When the opening needs to be adjusted, it is only necessary to pinch the upper handle and the lower handle to pull the limiting pin out of the limiting hole. After adjusting the valve plate to the appropriate position, the upper and lower handles are released. The positioning pin is inserted into the positioning hole under the action of the spring to fix the valve plate again. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural diagram of the manual adjustment air valve described in the present utility model.

[0012] Figure 2 This is a structural schematic diagram of the limit handle described in the utility model.

[0013] Figure 3 This is a structural schematic diagram of the limiting plate described in the utility model.

[0014] Among them, 1-valve body, 2-valve plate, 3-limit adjuster, 201-reinforcement rib, 202-sealing gasket, 301-upper rotating bearing, 302-limit plate, 303-limit handle, 304-rotating shaft, 305-lower rotating bearing, 3031-upper handle, 3032-spring, 3033-lower handle, 3034-limit pin, 3035-connecting shaft. DETAILED DESCRIPTION

[0015] 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 some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. 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.

[0016] like Figures 1 to 3As shown, a manually adjustable air valve with a limit function includes a valve body 1, a valve plate 2, and a limit adjuster 3. The limit adjuster 3 includes an upper rotary bearing 301, a limit plate 302, a limit handle 303, a rotary shaft 304, and a lower rotary bearing 305. The valve body 1 is a hollow rectangle, and the valve plate 2 is located inside the valve body 1. The valve plate 2 is provided with one or more reinforcing ribs 201, and a sealing gasket 202 is provided around the valve plate 2; the rotary shaft 304 is located at the center line of the valve body 1 and is fixedly connected to the valve body 1. The top of the rotary shaft 304 passes through the upper rotary bearing 301 and the bottom passes through the lower rotary bearing 305. The limit plate 302 is fan-shaped and has limit holes 3021 distributed thereon. The limit handle 303 includes an upper handle 3031, a spring 3032, a lower handle 3033, a limit pin 3034, and a connecting shaft 3035. The upper handle 3031 and the lower handle 3033 are connected by the connecting shaft 3035. The limit pin 3034 passes through the lower handle 3033. The spring 3032 is located between the upper handle 3031 and the lower handle 3033 and is sleeved on the limit pin 3034. The top of the spring 3032 is fixed on the upper handle 3031, and the lower part is fixed to the limit pin 3034. The limit pin 3034 can move up and down with the spring 3032. There are multiple limit holes 3021, which are arranged in an arc shape on the limit plate 302, and the arrangement spacing is 10-20°.

[0017] Those skilled in the art should understand that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A manual regulating air valve with a limit function, characterized in that: The valve body (1) comprises a valve plate (2), a limit regulator (3), wherein the limit regulator (3) comprises an upper rotary bearing (301), a limit plate (302), a limit handle (303), a rotary shaft (304), and a lower rotary bearing (305). The valve body (1) is a hollow rectangle. The valve plate (2) is located inside the valve body (1). The rotary shaft (304) is located on the center line of the valve body (1) and is fixedly connected to the valve body (1). The top of the rotary shaft (304) passes through the upper rotary bearing (301), and the bottom passes through the lower rotary bearing (305). ), the limiting plate (302) is fan-shaped and has limiting holes (3021) distributed thereon. The limiting handle (303) includes an upper handle (3031), a spring (3032), a lower handle (3033), a limiting pin (3034), and a connecting shaft (3035). The upper handle (3031) and the lower handle (3033) are connected via the connecting shaft (3035). The limiting pin (3034) passes through the lower handle (3033). The spring (3032) is located between the upper handle (3031) and the lower handle (3033) and is sleeved on the limiting pin (3034).

2. A manually adjustable air valve with a limit function according to claim 1, characterized in that: The top of the spring (3032) is fixed to the upper handle (3031), and the bottom is fixed to the limit pin (3034). The limit pin (3034) can move up and down with the spring (3032).

3. The manual regulating air valve with a limit function according to claim 1, characterized in that: The valve plate (2) is provided with reinforcing ribs (201), and the number of the reinforcing ribs (201) is one or more.

4. The manual regulating air valve with a limit function according to claim 1, characterized in that: There are a plurality of the limiting holes (3021), which are arranged in an arc shape on the limiting plate (302), with an arrangement spacing of 10-20°.

5. The manual regulating air valve with a limit function according to claim 1, characterized in that: The valve plate (2) is provided with sealing gaskets (2022) around its periphery.

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