Airtight electric closed air valve
By adopting a boss and semicircular sealing ring structure in the air valve, combining noise reduction fine hair and hollow sealing ring, the problems of inaccurate air volume control and howling noise are solved, and high air tightness and low noise air pipes are achieved Control improves the working environment and equipment accuracy in the laboratory.
Patent Information
- Application Number
- CN202421481876.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing air valves have problems such as inaccurate air volume control, howling noise and air leakage in the chemical laboratory, which affects the air quality and equipment accuracy in the laboratory.
An airtight electric air sealed air valve is designed, adopting a boss and a semicircular sealing ring structure, combining noise reduction fine hair and hollow sealing ring, increasing sealing ability through static pressure, and realizing the sealing mechanism through latches and clamping strips Convenient replacement.
It effectively reduces howling noise, improves the air tightness of the air duct, ensures accurate control of air volume, and improves the working environment and service life of the equipment in the laboratory.
Smart Images
Figure CN222163594U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air duct air volume control in laboratories, in particular to an airtight electric closed air valve. Background Art
[0002] During chemical experiments, various unpleasant, corrosive, toxic or explosive gases are often produced. If these harmful gases are not discharged outdoors in time, they will cause indoor air pollution, affect the health and safety of experimenters, and affect the accuracy and service life of instruments and equipment. Therefore, the laboratory ventilation system is an indispensable part of laboratory design. The laboratory ventilation system is generally composed of multiple parallel air ducts, and air valves are set between the air ducts to control the air volume circulation.
[0003] There are two major types of air valves on the market, one is the "Venturi valve" and the other is the "butterfly valve". Due to the cylindrical structure and unique spring mechanism of the Venturi valve, plus the calibration at the outlet, the air volume control is generally more precise. When the air valve is closed, the tightness is high, the air leakage is very small, and there is basically no whistling noise when it is closed. However, it is expensive and has a long production cycle, so it is not widely used in the industry. Butterfly valves have a high market share due to their low price and fast production speed, but the air volume control of butterfly valves is not precise, especially when it is about to close, it produces a whistling noise, and when the valve body is closed, there is a gap between the valve plate and the valve body, which will also cause air leakage and whistling noise. In the field of chemical laboratories, it affects the physical and mental health of indoor staff. In the field of biological cleanliness, it will cause disorder in the control of indoor and outdoor pressure differences, making the indoor environment fail to meet the use requirements, and also affecting the physical and mental health of indoor staff. Utility Model Content
[0004] The purpose of the utility model is to provide an airtight electric airtight air valve to solve the problems raised in the above background technology.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an airtight electric closed air valve, comprising a valve body, a valve plate rotatably arranged in the valve body, and a driving mechanism fixedly arranged on the outer wall of the valve body, the execution end of the driving mechanism passes through the outer wall of the valve body and is transmission-connected to the valve plate, a boss is fixedly and surroundingly arranged on the inner wall of the valve body, a noise reduction sealing mechanism is arranged on the outer wall of the boss close to the valve plate, the noise reduction sealing mechanism comprises a first sealing ring connected to the outer wall of the boss and two second sealing rings symmetrically and integrally arranged on both sides of the first sealing ring, the cross-sections of the first sealing ring and the two second sealing rings are both semicircular, the first sealing ring and the two second sealing rings are both made of rubber, and the outer wall of the second sealing ring is evenly and densely provided with noise reduction fine hairs.
[0006] Furthermore, the second sealing ring is hollow, and a plurality of circular holes are arranged at equal intervals along the inner wall of the valve body on the outer wall of the second sealing ring away from the first sealing ring, and the circular holes are connected to the inner wall of the second sealing ring.
[0007] Furthermore, a connecting groove is provided on the outer wall of the boss close to the valve plate, and two clamping grooves are symmetrically provided on the inner walls on both sides of the connecting groove. A connecting block which is inserted into the connecting groove is integrally provided at one end of the first sealing ring away from the valve plate, and two clamping strips which are respectively clamped with the two clamping grooves are symmetrically provided on both sides of the connecting block.
[0008] Furthermore, both left and right ends of the valve body are bonded and wrapped with rubber rings along the outer wall.
[0009] Furthermore, reinforcing ribs are fixedly provided at the top and bottom ends of the valve body.
[0010] The beneficial effect achieved by the utility model is as follows: by evenly and densely arranging noise-reducing fine hairs on the outer wall of the second sealing valve to absorb the noise generated by the howling, noise reduction processing is achieved; at the same time, by arranging the second sealing ring to be hollow, and cooperating with the outer wall of the second sealing ring away from the first sealing ring on the side along the inner wall of the valve body with equal spacing, the static pressure in the air duct acts on the inside of the second sealing ring, causing the second sealing ring to deform and approach the first sealing valve until it fits with the side wall of the valve plate, thereby increasing the air tightness. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 A schematic diagram of the structure of an airtight electric airtight air valve in an embodiment;
[0012] Figure 2 is a cross-sectional view of an airtight electric sealed air valve in an embodiment;
[0013] Figure 3 It is a schematic diagram of the local structure of the noise reduction sealing mechanism in the embodiment when it is connected to the boss. DETAILED DESCRIPTION
[0014] The utility model is further described below in conjunction with the accompanying drawings.
[0015] like Figure 1-2As shown, the utility model discloses an airtight electric airtight air valve, comprising: an airtight electric airtight air valve, comprising a valve body 1, a valve plate 2 rotatably arranged in the valve body 1, and a driving mechanism 3 fixedly arranged on the outer wall of the valve body 1, the execution end of the driving mechanism 3 passes through the outer wall of the valve body 1 and is drivingly connected to the valve plate 2, a boss 11 is fixedly and surroundingly arranged on the inner wall of the valve body 1, a noise reduction sealing mechanism 4 is arranged on the outer wall of the boss 1 close to the valve plate 2, the noise reduction sealing mechanism 4 comprises a first sealing ring 41 connected to the outer wall of the boss 11 and two second sealing rings 42 symmetrically and integrally arranged on both sides of the first sealing ring 41, the cross-sections of the first sealing ring 41 and the two second sealing rings 42 are both semicircular, the first sealing ring 41 and the two second sealing rings 42 are both made of rubber, and the outer wall of the second sealing ring 42 is evenly and densely provided with noise reduction fine hairs 421.
[0016] Further, such as Figure 1-3 As shown, the second sealing ring 42 is hollow, and a plurality of circular holes 422 are evenly spaced along the inner wall of the valve body 1 on the outer wall of the second sealing ring 42 away from the first sealing ring 41 , and the circular holes 422 are connected to the inner wall of the second sealing ring 42 .
[0017] Based on the above structure, Figure 1-3 As shown, when in use, the driving mechanism 3 drives the valve plate 2 to adjust the angle between 0°-90°, so as to realize the control of the air volume. When the valve plate 2 enters the vertical state, the outer wall of the valve plate 2 and the arc surface part of the first sealing ring 41 are completely closed, thereby sealing the inside of the valve body 1, thereby blocking the air circulation. In this process, the outer wall of the second sealing ring 42 is evenly and densely provided with noise reduction fine hairs 421 to absorb the noise generated by the whistling, thereby realizing the noise reduction process;
[0018] At the same time, when the outer wall of the valve plate 2 and the arc surface of the first sealing ring 41 are completely closed, the static pressure in the air duct will act on the inside of the second sealing ring 42 through the circular hole 422, thereby causing the second sealing ring 42 to deform and move closer to the first sealing valve 41 until it fits against the side wall of the valve plate 2, thereby increasing air tightness;
[0019] The greater the static pressure in the air duct, the tighter the fit between the second sealing ring 42 and the valve plate.
[0020] Further, such as Figure 2-3As shown, in order to facilitate the replacement of the noise reduction sealing mechanism, a connecting groove 111 is provided on the outer wall of the boss 11 close to the valve plate 2, and two clamping grooves 112 are symmetrically provided on the inner walls on both sides of the connecting groove 111. The end of the first sealing ring 41 away from the valve plate 2 is integrally provided with a connecting block 411 that is plugged into the connecting groove 111, and two clamping strips 412 that are respectively clamped with the two clamping grooves 112 are symmetrically provided on both sides of the connecting block 411. Both the connecting block 411 and the clamping strip 412 are made of rubber. When the noise reduction sealing mechanism needs to be replaced, the worker manually pulls the noise reduction sealing mechanism, and the pulling force acts on the clamping strip 412, so that the clamping strip 412 is deformed and detached from the clamping groove 112, thereby completing the disassembly, and then reinstalls the noise reduction sealing mechanism, by pressing the second sealing ring 41, the pressing force acts on the clamping strip 412, and re-enters the clamping groove 112, thereby achieving reinstallation.
[0021] Further, such as Figure 1-2 As shown, in order to increase the air tightness between the valve body and the air duct and avoid deformation of the valve body 1 or the air duct caused by collision during installation, rubber rings 5 are bonded and wrapped along the outer wall of the left and right ends of the valve body 1.
[0022] Further, such as Figure 1-2 As shown, in order to increase the structural strength of the valve body, reinforcing ribs 6 are fixedly provided at the top and bottom ends of the valve body 1.
[0023] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.
Claims
1. An airtight electric airtight air valve, comprising a valve body (1), a valve plate (2) rotatably arranged in the valve body (1), and a driving mechanism (3) fixedly arranged on the outer wall of the valve body (1), wherein the execution end of the driving mechanism (3) passes through the outer wall of the valve body (1) and is drivingly connected to the valve plate (2), characterized in that: A boss (11) is fixedly and circumferentially arranged on the inner wall of the valve body (1), and a noise reduction sealing mechanism (4) is arranged on the outer wall of the boss (11) close to the valve plate (2). The noise reduction sealing mechanism (4) comprises a first sealing ring (41) connected to the outer wall of the boss (11) and two second sealing rings (42) symmetrically and integrally arranged on both sides of the first sealing ring (41). The cross-sections of the first sealing ring (41) and the two second sealing rings (42) are both semicircular. The first sealing ring (41) and the two second sealing rings (42) are both made of rubber. The outer wall of the second sealing ring (42) is evenly and densely provided with noise reduction fine hairs (421).
2. The airtight electric airtight air valve according to claim 1, characterized in that: The second sealing ring (42) is hollow, and a plurality of circular holes (422) are arranged at equal intervals on the outer wall of the second sealing ring (42) on the side away from the first sealing ring (41) along the inner wall of the valve body (1), and the circular holes (422) are connected to the inner wall of the second sealing ring (42).
3. An airtight electric airtight air valve according to any one of claims 1-2, characterized in that: A connecting groove (111) is provided on the outer wall of the boss (11) close to the valve plate (2), and two clamping grooves (112) are symmetrically provided on the inner walls on both sides of the connecting groove (111). A connecting block (411) inserted into the connecting groove (111) is integrally provided at one end of the first sealing ring (41) away from the valve plate (2), and two clamping strips (412) respectively clamped with the two clamping grooves (112) are symmetrically provided on both sides of the connecting block (411).
4. The airtight electric airtight air valve according to claim 1, characterized in that: Both ends of the valve body (1) are bonded and wrapped with rubber rings (5) along the outer wall.
5. The airtight electric airtight air valve according to claim 1, characterized in that: Reinforcing ribs (6) are fixedly provided at the top and bottom ends of the valve body (1).