Air valve with high sealing performance

Abstract

The utility model discloses an air valve with high sealing performance, which particularly relates to the technical field of air valves and comprises two first valve plates, two ends of each first valve plate are connected with a second valve plate, a first blade and a second blade are hinged between the first valve plates, two sides of each blade and a protruding portion of each second valve plate are provided with mounting grooves and are provided with sealing strips, and the blades are connected through a linkage assembly. The first blade is connected with the switch, a carrier plate is installed on the inner side of the first valve plate, the blades are rotationally connected with the carrier plate, the first valve plate, the second valve plate and the carrier plate are formed by stretching aluminum profiles, the linkage assembly comprises a connecting rod, a transmission frame and a first supporting shaft, the air valve is further provided with a scale plate and a locking button, and the sealing strip is composed of a fixing part and a sealing part. The air valve solves the problems that a traditional air valve is poor in sealing performance, inaccurate in opening adjustment, complex in manufacturing process and the like, has the advantages of being high in sealing performance, accurate in opening adjustment, efficient in manufacturing, convenient and fast to install and the like, and can effectively improve operation efficiency and stability of a ventilation system.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air valve, more specifically, the utility model relates to a kind of air valve of high airtightness. BACKGROUND

[0002] In the ventilation system, as the key component of controlling airflow and flow direction, the airtightness of air valve has an important influence on the operating efficiency and energy consumption of the system. The traditional air valve has many deficiencies in practical application. The sealing structure of some air valves is simple in design, relying only on the simple fit between the blades, which is difficult to effectively block air leakage under different working conditions, resulting in a large amount of air escaping through the gap, reducing the overall efficiency of the ventilation system and increasing energy consumption. For example, in some places with high requirements for air flow control accuracy, such as clean rooms, laboratories, etc., the leaked air flow will interfere with the indoor air environment, affecting the stability of experimental results or production processes.

[0003] In addition, the existing air valve lacks accurate indication and fixing device when adjusting the opening degree, so it is difficult for the operator to accurately grasp the opening degree of the air valve, resulting in inaccurate ventilation control and failing to meet the actual demand. Moreover, the manufacturing process of the air valve may also have defects, some components use complex processing methods, which not only have high cost and low efficiency, but also are prone to quality problems, affecting the overall performance and service life of the air valve.

[0004] Therefore, the present application provides an air valve with high airtightness. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides an air valve with high airtightness to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an air valve with high airtightness, comprising a first valve plate, the first valve plate is provided with two, two first valve plates are connected with a second valve plate at both ends, two first valve plates are hingedly connected with two first blades and second blades in pressure connection, first installation groove is formed on both sides of the first blade and the second blade, the inner side of each second valve plate is provided with a protruding part, second installation groove is formed on each protruding part, sealing strip is installed in the first installation groove and the second installation groove, linkage assembly is connected between the first blade and the second blade, the first blade is connected with a switch.

[0007] Preferably, the inner side of each first valve plate is provided with a sealing gasket connected and fixed with the first valve plate at the junction with the first blade and the second blade.

[0008] Preferably, the first valve plate and the second valve plate are made of aluminum profile stretching.

[0009] Preferably, the first blade and the second blade are each provided with a second support shaft at one end, and the first blade and the second blade are connected by a linkage assembly at the other end.

[0010] Preferably, the linkage assembly comprises a connecting rod, a transmission frame and a first support shaft, the connecting rod is connected with the transmission frame at both ends, each transmission frame is connected with a first support shaft, the two first support shafts are respectively arranged on the first blade and the second blade, the first support shaft and the second support shaft are hexagonal shafts, and a shaft sleeve is sleeved on the first support shaft and the second support shaft.

[0011] Preferably, the first valve plate is provided with a scale plate, the scale plate is provided with a switch connected with the second support shaft, the switch is provided with a locking knob, the scale plate is provided with an arc-shaped slot, and the locking knob is insertedly connected with the arc-shaped slot.

[0012] Preferably, the sealing strip comprises a fixed part and a sealing part, the fixed part and the sealing part are connected and fixed, and the fixed part is used for connecting with the first mounting groove and the second mounting groove.

[0013] The technical effects and advantages of the utility model are as follows:

[0014] 1. By arranging the mounting grooves on the two sides of the first blade and the second blade and the convex part of the second valve plate and arranging the sealing strips, the adjacent sealing strips are deformed and closely combined when the air valve is closed, the sealing performance of the connection between the second valve plate and the blades and the connection between the blades is greatly improved, air leakage is effectively reduced, the sealing reliability of the air valve is improved, and the demand of places with high requirements for air flow control accuracy is met.

[0015] 2. By arranging the scale plate, the switch and the locking knob, the opening degree of the first blade and the second blade can be accurately adjusted according to the scale, the opening degree of the air valve can be accurately controlled, the position of the switch can be fixed by the locking knob to avoid loosening, the accuracy of the ventilation volume control is ensured, and the accurate adjustment demand of the ventilation volume under different working conditions is met.

[0016] 3. The first valve plate, the second valve plate and the carrier plate are made of aluminum profile by stretching, the processing procedure is simplified, the labor cost is reduced, the processing efficiency is improved, the overall quality of the product is ensured, and the durability and stability of the air valve are improved.

[0017] 4. The sealing strip is designed in the structure of the fixed part and the sealing part, the fixed part can be directly clamped in the first mounting groove and the second mounting groove, quick installation is realized, maintenance and replacement are facilitated, and the installation and maintenance efficiency of the air valve is improved. DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a side view of the structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the connection structure between the linkage component of this utility model and the first and second blades.

[0021] Figure 4 This is a schematic diagram of the sealing structure connecting the first and second blades with the second valve plate of this utility model.

[0022] Figure 5 This is a schematic diagram of the sealing strip of this utility model.

[0023] The attached figures are labeled as follows: 1. First valve plate; 2. Second valve plate; 3. First blade; 4. Second blade; 5. Scale plate; 6. Switch; 7. Locking button; 8. Linkage assembly; 801. Connecting rod; 802. Transmission frame; 803. First support shaft; 9. Sealing gasket; 10. Second support shaft; 11. First mounting groove; 12. Second mounting groove; 13. Fixing part; 14. Sealing part. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] As attached Figures 1-5 The high-sealing-performance air valve shown includes a first valve plate 1, of which two are provided. Each of the two first valve plates 1 is connected to a second valve plate 2 at both ends. The two first valve plates 1 are hinged together with two press-fitted first blades 3 and second blades 4. The first blades 3 and second blades 4 are provided with first mounting grooves 11 on both sides. Each second valve plate 2 is provided with a protrusion on its inner side. Each protrusion is provided with a second mounting groove 12. Sealing strips are installed in the first mounting grooves 11 and second mounting grooves 12. A linkage assembly 8 is connected between the first blades 3 and second blades 4. A switch 6 is connected to the first blades 3.

[0026] In specific implementation, the first blade 3 can be controlled to open and close by rotating the switch 6, and the second blade 4 can be opened and closed under the connection of the linkage assembly 8. When the first blade 3 and the second blade 4 are closed, one end of the first blade 3 is abutted against the bottom of the protruding part of one second valve plate 2, the other end of the first blade 3 is pressed above one end of the second blade 4, and the other end of the second blade 4 is pressed above the protruding part of the other second valve plate 2, so that two sealing strips are pressed at the connection of one second valve plate 2 and the first blade 3, the connection of the first blade 3 and the second blade 4, and the connection of the second blade 4 and the other second valve plate 2, the adjacent two sealing strips are deformed and fit, double sealing is performed, the sealing performance of each joint is improved, and the sealing reliability of the air valve is improved.

[0027] Two sealing pads 9 are arranged at the joints between the inner sides of the two first valve plates 1 and the two ends of the first blade 3 and the second blade 4.

[0028] In specific implementation, the gap between the two ends of the first blade 3 and the second blade 4 and the two first valve plates 1 is sealed by the sealing pad 9, which can further improve the sealing performance of the first blade 3 and the second blade 4 after being closed.

[0029] The first valve plate 1 and the second valve plate 2 are both made of aluminum profile stretching.

[0030] In specific implementation, the first valve plate 1 and the second valve plate 2 are made of aluminum profile stretching, which can reduce the complicated process of manual bending during production, improve the processing efficiency, and improve the overall quality.

[0031] One end of the first blade 3 and the second blade 4 is provided with a second support shaft 10, and the other end of the first blade 3 and the second blade 4 is connected by the linkage assembly 8.

[0032] The linkage assembly 8 comprises a connecting rod 801, a transmission frame 802 and a first support shaft 803. The two ends of the connecting rod 801 are both connected with the transmission frame 802, each transmission frame 802 is connected with a first support shaft 803, and the two first support shafts 803 are respectively arranged on the first blade 3 and the second blade 4. The first support shaft 803 and the second support shaft 10 are both hexagonal shafts, and a shaft sleeve is sleeved on the first support shaft 803 and the second support shaft 10.

[0033] A scale plate 5 is arranged on one first valve plate 1, the switch 6 connected with the second support shaft 10 is arranged on the scale plate 5, the locking knob 7 is arranged on the switch 6, an arc-shaped groove is arranged on the scale plate 5, and the locking knob 7 is inserted and matched with the arc-shaped groove.

[0034] In specific implementation, according to the scale on the scale plate 5, the switch 6 is rotated, so that the second support shaft 10 connected with the first blade 3 is rotated, so that the first blade 3 drives the first support shaft 803 connected with the first blade 3 to rotate, so that the transmission frame 802 is rotated, and the connecting rod 801 is driven to move up and down, so that the second blade 4 can be rotated synchronously, so that the opening size of the air valve can be determined according to the scale indicated by the switch 6 on the scale plate 5, and synchronous adjustment can be realized. After the opening is adjusted, the locking knob 7 is rotated to abut against the scale plate 5, so that the position of the switch 6 can be fixed to avoid loosening, improve the accuracy of ventilation control, and the first support shaft 803 and the second support shaft 10 can be sleeved with the shaft sleeve, so that the rotation of the first support shaft 803 and the second support shaft 10 is smooth.

[0035] The sealing strip comprises a fixed part 13 and a sealing part 14, the fixed part 13 and the sealing part 14 are connected and fixed, and the fixed part 13 is used for being connected with the first mounting groove 11 and the second mounting groove 12.

[0036] In specific implementation, the sealing strip is installed in each first mounting groove 11 and second mounting groove 12, so that the fixed part 13 of each sealing strip is clamped in the first mounting groove 11 and the second mounting groove 12 respectively, and quick installation is completed.

[0037] The above only describes preferred embodiments of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-sealing-performance air valve, comprising a first valve plate (1), characterized in that: There are two first valve plates (1), and each of the two first valve plates (1) is connected to a second valve plate (2) at both ends. The two first valve plates (1) are hinged together with two press-fitted first blades (3) and second blades (4). The first blades (3) and second blades (4) are provided with first mounting grooves (11) on both sides. Each second valve plate (2) is provided with a protrusion on its inner side. Each protrusion is provided with a second mounting groove (12). Sealing strips are installed in the first mounting grooves (11) and second mounting grooves (12). A linkage component (8) is connected between the first blades (3) and second blades (4). A switch (6) is connected to the first blades (3).

2. The high-sealing-performance air valve according to claim 1, characterized in that: A sealing gasket (9) is provided at the connection point between the inner side of the two first valve plates (1) and the two ends of the first blade (3) and the second blade (4) to be connected and fixed to the first valve plate (1).

3. The high-sealing-performance air valve according to claim 2, characterized in that: Both the first valve plate (1) and the second valve plate (2) are made of aluminum profiles stretched from aluminum.

4. The high-sealing-performance air valve according to claim 3, characterized in that: The first blade (3) and the second blade (4) are each equipped with a second support shaft (10) at one end, and the other ends of the first blade (3) and the second blade (4) are connected by a linkage assembly (8).

5. A high-sealing-performance air valve according to claim 4, characterized in that: The linkage assembly (8) includes a connecting rod (801), a transmission frame (802), and a first support shaft (803). Both ends of the connecting rod (801) are connected to the transmission frame (802), and each transmission frame (802) is connected to a first support shaft (803). The two first support shafts (803) are respectively installed on the first blade (3) and the second blade (4). Both the first support shaft (803) and the second support shaft (10) are hexagonal shafts, and both the first support shaft (803) and the second support shaft (10) are fitted with bushings.

6. The high-sealing-performance air valve according to claim 5, characterized in that: A scale plate (5) is installed on the first valve plate (1), and a switch (6) connected to the second support shaft (10) is installed on the scale plate (5). A locking button (7) is installed on the switch (6). An arc groove is opened on the scale plate (5), and the locking button (7) is inserted into the arc groove.

7. A high-sealing-performance air valve according to claim 6, characterized in that: The sealing strip includes a fixing part (13) and a sealing part (14), which are connected and fixed, and the fixing part (13) is used to connect with the first mounting groove (11) and the second mounting groove (12).

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