Explosion-proof air valve with adjustable opening degree

Abstract

The utility model discloses an opening-adjustable explosion-proof air valve, and relates to the field of explosion-proof air valves, the opening-adjustable explosion-proof air valve comprises a connecting frame plate arranged on the upper side of a valve body, and further comprises connecting ring discs positioned on the two sides of the valve body, a plurality of groups of connecting holes are formed in the two groups of connecting ring discs in a penetrating manner, and outer ring plates are fixedly connected to the opposite surfaces of the two groups of connecting ring discs; the upper sides of the two sets of outer ring plates are fixedly connected with connecting plates, fastening bolts are arranged on the two sets of connecting plates in a penetrating mode, the bottom ends of the two sets of outer ring plates are fixedly connected with two sets of limiting groove plates, the lower side of the valve body is fixedly connected with two sets of limiting rods, and the multiple sets of connecting holes are distributed in the two sets of connecting ring plates at equal intervals. The anti-explosion air valve has the advantages that the two sets of connecting ring discs can be rapidly replaced according to the number of actual connecting holes, the connecting applicability of the valve body and a pipeline is improved, the step-by-step disassembling function of the anti-explosion air valve is achieved, and fault parts of the anti-explosion air valve can be conveniently overhauled and replaced.

Description

Technical Field

[0001] The utility model relates to the field of explosion-proof air valves, in particular to an explosion-proof air valve with adjustable opening. Background Art

[0002] Explosion-proof dampers are safety devices used to prevent the spread of explosive gases or flames within air duct systems. They are primarily installed in industrial air duct systems, particularly in locations where flammable or explosive gases or dust are present, such as chemical plants, oil refineries, and mines. They prevent the spread of blast waves, flames, or high-temperature gases through the air duct, thereby protecting the entire ventilation system and the surrounding environment from the spread of explosions.

[0003] Patent publication number CN209370564U discloses an explosion-proof damper with adjustable maximum opening. This valve utilizes a compact pneumatic actuator instead of a traditional electric actuator, preventing electrical fires in complex, flammable, and explosive environments. The valve utilizes an intrinsically safe proximity switch, whose position can be adjusted via a maximum opening control knob, thereby adjusting the damper's maximum opening. However, the valve's connecting ring is fixedly attached to the valve body during use. This makes it difficult to connect the valve body to pipes with varying numbers of connection holes, limiting its applicability. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide an explosion-proof air valve with adjustable opening. When the existing explosion-proof air valve is in use, the connecting ring disk on it is fixedly connected to the valve body. When encountering pipes with different numbers of connecting holes, the valve body is difficult to connect to the pipes accordingly, and the scope of application is limited.

[0005] In order to solve the above technical problems, the technical solution of the utility model is to provide an explosion-proof air valve with adjustable opening, comprising a connecting frame plate arranged on the upper side of the valve body, and also comprising connecting ring discs located on both sides of the valve body, wherein two groups of connecting ring discs are penetrated with a plurality of connecting holes, and the opposing surfaces of the two groups of connecting ring discs are fixedly connected to outer ring plates, and the upper sides of the two groups of outer ring plates are fixedly connected to connecting plates, and fastening bolts are penetrated by the two groups of connecting plates;

[0006] The bottom ends of the two groups of outer ring plates are fixedly connected with two groups of limiting groove plates, and the lower side of the valve body is fixedly connected with two groups of limiting rods.

[0007] As a further solution of the present invention: several groups of connecting holes are distributed at equal intervals on two groups of connecting ring plates, the two groups of outer ring plates are both sleeved on the outside of the valve body, and the inner diameter of the two groups of connecting ring plates is the same as the inner diameter of the valve body.

[0008] As a further solution of the present invention: threaded holes are provided through the middle positions of both sides of the connecting frame plate, and two groups of fastening bolts pass through the two groups of connecting plates respectively to match the threaded holes and are threadedly connected to the two sides of the connecting frame plate.

[0009] As a further solution of the present invention: the cross-section of the limiting slot plate is U-shaped, and the limiting slot plate is movably connected to the limiting rod.

[0010] As a further solution of the present invention: a pneumatic actuator is fixedly connected to the upper side of the connecting frame plate, a driving shaft penetrating the connecting frame plate is connected to the lower side of the pneumatic actuator, a rotating tube is sleeved on the outer side of the driving shaft, two groups of valve plates are fixedly connected to the outer side of the rotating tube, two groups of external connecting rods are fixedly connected to the outer side of the driving shaft, and a retaining ring is provided on the lower side of the valve body;

[0011] Flip plates are provided on both sides of the connecting frame plate, and connecting hinges are respectively connected between the two groups of flip plates and the connecting frame plate. The top of the valve body is fixedly connected to a top connecting rod, and the tops of the two groups of top connecting rods are threadedly connected to a clamping ring.

[0012] As a further solution of the present invention: the rotating tube and the two sets of valve plates are both located inside the valve body, the driving shaft is connected to the rotating tube through two sets of external connecting rods, and the retaining ring is threadedly connected to the driving shaft.

[0013] As a further solution of the present invention: the two groups of flip plates are respectively connected to the two groups of top connecting rods, and the two groups of clamping rings are respectively located on the outsides of the two groups of flip plates.

[0014] Compared with the prior art, the beneficial effects of the present invention include: through two groups of outer ring plates, the two groups of outer ring discs are respectively fitted with the two sides of the valve body. At this time, the four groups of limit slot plates are respectively connected to the two groups of limit rods to prevent the outer ring plates and the valve body from rotating relative to each other. Then, the two groups of fastening bolts are respectively passed through the two groups of connecting plates and matched with the threaded holes to be threadedly connected to the two sides of the connecting frame plate to fix the positions of the two groups of connecting ring discs. The two groups of connecting ring discs can be quickly replaced according to the actual number of connecting holes to improve the connection applicability of the valve body and the pipeline.

[0015] Compared with the prior art, the beneficial effects of the present invention include: first, the two sets of retaining rings are removed from the top of the two sets of top connecting rods respectively, and then the two sets of flip plates are separated from the two sets of top connecting rods respectively with the connecting hinges, thereby separating the connecting frame plate from the valve body, and then the drive shaft is separated from the rotating tube through the two sets of outer connecting rods and the retaining rings, and the rotating tube and the two sets of valve plates are moved out from the inside of the valve body, realizing the step-by-step disassembly function of the explosion-proof air valve, so that the faulty parts of the explosion-proof air valve can be inspected and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an explosion-proof air valve with adjustable opening in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the valve body and the connecting ring disc in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the connecting frame plate and the valve body in an embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the connection structure between the drive shaft and the rotating tube in an embodiment of the present utility model.

[0020] In the figure: 1. Valve body; 2. Connecting frame plate; 3. Pneumatic actuator; 4. Drive shaft; 5. Rotating tube; 6. Valve plate; 7. Connecting ring plate; 8. Connecting hole; 9. Outer ring plate; 10. Connecting plate; 11. Fastening bolt; 12. Threaded hole; 13. Flip plate; 14. Connecting hinge; 15. Top connecting rod; 16. Snap ring; 17. Outer connecting rod; 18. Retaining ring; 19. Limiting groove plate; 20. Limiting rod. DETAILED DESCRIPTION

[0021] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0022] Example 1, please refer to Figures 1-4 , an explosion-proof air valve with adjustable opening, including a connecting frame plate 2 arranged on the upper side of the valve body 1, and also including connecting ring discs 7 on both sides of the valve body 1, two groups of connecting ring discs 7 are penetrated with a plurality of connecting holes 8, the opposite surfaces of the two groups of connecting ring discs 7 are fixedly connected with outer ring plates 9, the upper sides of the two groups of outer ring plates 9 are fixedly connected with connecting plates 10, and fastening bolts 11 are penetrated on the two groups of connecting plates 10, the bottom ends of the two groups of outer ring plates 9 are fixedly connected with two groups of limiting groove plates 19, and the lower side of the valve body 1 is fixedly connected with two groups of limiting rods 20.

[0023] Several groups of connecting holes 8 are distributed at equal intervals on two groups of connecting ring plates 7. Two groups of outer ring plates 9 are both sleeved on the outside of the valve body 1. The inner diameter of the two groups of connecting ring plates 7 is the same as the inner diameter of the valve body 1. The cross-sectional shape of the limiting groove plate 19 is U-shaped, and the limiting groove plate 19 is movably connected to the limiting rod 20.

[0024] In this embodiment, two sets of outer ring plates 9 are used to facilitate the installation and use of two sets of connecting ring discs 7 .

[0025] Threaded holes 12 are formed in the middle of both sides of the connecting frame plate 2 , and two sets of fastening bolts 11 pass through the two sets of connecting plates 10 and match the threaded holes 12 to be threadedly connected to both sides of the connecting frame plate 2 .

[0026] In this embodiment, the relative positions of the outer ring plate 9 and the valve body 1 are fixed by fastening the bolts 11 and the threaded connection with the connecting frame plate 2 in conjunction with the limiting groove plate 19 and the limiting rod 20 .

[0027] Specifically, two groups of outer ring plates 9 are used to make the two groups of outer ring discs fit with the two sides of the valve body 1 respectively. At this time, the four groups of limit slot plates 19 are respectively connected to the two groups of limit rods 20 to prevent the outer ring plates 9 and the valve body 1 from rotating relative to each other. Then, the two groups of fastening bolts 11 are respectively passed through the two groups of connecting plates 10 and matched with the threaded holes 12 to be threadedly connected to the two sides of the connecting frame plate 2 to fix the positions of the two groups of connecting ring discs 7. The two groups of connecting ring discs 7 can be quickly replaced according to the actual number of connecting holes 8 to improve the connection applicability of the valve body 1 and the pipeline.

[0028] Example 2, please refer to Figures 1-4 , an explosion-proof air valve with adjustable opening, the upper side of the connecting frame plate 2 is fixedly connected to the pneumatic actuator 3, the lower side of the pneumatic actuator 3 is connected to the driving shaft 4 that passes through the connecting frame plate 2, the outer side of the driving shaft 4 is sleeved with a rotating tube 5, the outer side of the rotating tube 5 is fixedly connected to two groups of valve plates 6, the outer side of the driving shaft 4 is fixedly connected to two groups of outer connecting rods 17, a retaining ring 18 is provided on the lower side of the valve body 1, and flip plates 13 are provided on both sides of the connecting frame plate 2, and the two groups of flip plates 13 are respectively connected to the connecting frame plate 2 with connecting hinges 14, the top of the valve body 1 is fixedly connected to a top connecting rod 15, and the tops of the two groups of top connecting rods 15 are threadedly connected to a snap ring 16.

[0029] The rotating tube 5 and the two sets of valve plates 6 are all located inside the valve body 1 . The driving shaft 4 is connected to the rotating tube 5 through two sets of outer connecting rods 17 , and the retaining ring 18 is threadedly connected to the driving shaft 4 .

[0030] In this embodiment, the driving shaft 4 is connected to the rotating tube 5 through two sets of outer connecting rods 17 .

[0031] The two groups of flip plates 13 are respectively connected to the two groups of top connecting rods 15 , and the two groups of snap rings 16 are respectively located on the outsides of the two groups of flip plates 13 .

[0032] In this embodiment, the frame plate 2 and the valve body 1 are connected by the flip plate 13 and the top connecting rod 15 in conjunction with the snap ring 16 .

[0033] Specifically, first remove the two sets of snap rings 16 from the top of the two sets of top connecting rods 15 respectively, and then cooperate with the connecting hinges 14 to separate the two sets of flip plates 13 from the two sets of top connecting rods 15 respectively, so that the connecting frame plate 2 is separated from the valve body 1, and then use the two sets of outer connecting rods 17 to cooperate with the retaining ring 18 to separate the drive shaft 4 from the rotating tube 5, and move the rotating tube 5 and the two sets of valve plates 6 out of the interior of the valve body 1, realizing the step-by-step disassembly function of the explosion-proof air valve, so that the faulty parts of the explosion-proof air valve can be inspected and replaced.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. An explosion-proof air valve with adjustable opening, comprising a connecting frame plate (2) arranged on the upper side of a valve body (1), characterized in that: It also includes connecting ring discs (7) located on both sides of the valve body (1), and two groups of connecting ring discs (7) are penetrated with a plurality of connecting holes (8), and the opposite surfaces of the two groups of connecting ring discs (7) are fixedly connected to outer ring plates (9), and the upper sides of the two groups of outer ring plates (9) are fixedly connected to connecting plates (10), and fastening bolts (11) are penetrated on the two groups of connecting plates (10); The bottom ends of the two sets of outer ring plates (9) are fixedly connected to two sets of limiting groove plates (19), and the lower side of the valve body (1) is fixedly connected to two sets of limiting rods (20).

2. The explosion-proof air valve with adjustable opening according to claim 1, characterized in that: The plurality of groups of connection holes (8) are distributed at equal intervals on the two groups of connection ring discs (7), the two groups of outer ring plates (9) are sleeved on the outside of the valve body (1), and the inner diameters of the two groups of connection ring discs (7) are the same as the inner diameter of the valve body (1).

3. The explosion-proof air valve with adjustable opening according to claim 1, characterized in that: Threaded holes (12) are provided through the middle positions of both sides of the connecting frame plate (2), and two groups of fastening bolts (11) respectively pass through the two groups of connecting plates (10) and the matching threaded holes (12) to be threadedly connected to both sides of the connecting frame plate (2).

4. The explosion-proof air valve with adjustable opening according to claim 1, characterized in that: The cross-section of the limiting slot plate (19) is U-shaped, and the limiting slot plate (19) is movably connected to the limiting rod (20).

5. The explosion-proof air valve with adjustable opening according to claim 1, characterized in that: The upper side of the connecting frame plate (2) is fixedly connected to a pneumatic actuator (3), the lower side of the pneumatic actuator (3) is connected to a driving shaft (4) that passes through the connecting frame plate (2), the outer side of the driving shaft (4) is sleeved with a rotating tube (5), the outer side of the rotating tube (5) is fixedly connected to two groups of valve plates (6), the outer side of the driving shaft (4) is fixedly connected to two groups of external connecting rods (17), and the lower side of the valve body (1) is provided with a retaining ring (18); Both sides of the connecting frame plate (2) are provided with a flip plate (13), and two groups of the flip plates (13) are respectively connected to the connecting frame plate (2) with a connecting hinge (14). The top of the valve body (1) is fixedly connected with a top connecting rod (15), and the tops of the two groups of the top connecting rods (15) are both threadedly connected with a clamping ring (16).

6. The explosion-proof air valve with adjustable opening according to claim 5, characterized in that: The rotating tube (5) and the two sets of valve plates (6) are both located inside the valve body (1), the driving shaft (4) is connected to the rotating tube (5) via two sets of external connecting rods (17), and the retaining ring (18) is threadedly connected to the driving shaft (4).

7. The explosion-proof air valve with adjustable opening according to claim 5, characterized in that: The two groups of flip plates (13) are respectively connected to the two groups of top connecting rods (15), and the two groups of snap rings (16) are respectively located on the outsides of the two groups of flip plates (13).

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