Air valve of pneumatic ventilation system

Abstract

The utility model provides an air valve of a pneumatic ventilation system. The air valve comprises a pneumatic mechanism main body, an air inlet is formed in the outer wall of the pneumatic mechanism main body; the valve body is fixed to the lower end of the pneumatic mechanism body through a bolt, and an indicating groove is formed in the outer wall of the valve body. A valve rod is connected to the upper end of the valve fan in an inserted mode, and the valve rod is connected to the inner wall of the valve body in an inserted mode and is a rotating device. The indicating block is installed on the inner wall of the indicating groove and fixed to the outer wall of the valve rod through a screw. A guide strip is welded to the outer wall of the pneumatic mechanism body, and a sliding plate is connected to the outer wall of the guide strip in an inserted mode. The knob is connected to the inner wall of the sliding plate in a screwed mode, and the plug bolt is fixed to one end of the knob; by improving the air valve of the pneumatic ventilation system, the air valve has the advantages that the structural design is reasonable, dust is prevented from entering the air inlet, and the opening and closing state of the air valve is convenient to detect, so that the problems and defects in an existing device are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation systems, and more specifically, to a wind valve of a pneumatic ventilation system. Background Art

[0002] The air volume regulating valve is an indispensable central air conditioning terminal accessory in the ventilation, air conditioning and air purification projects of industrial plants and civil buildings. It is generally used in air conditioning and ventilation system pipelines to adjust the air volume of the branch pipe. It can also be used for the mixing and adjustment of fresh air and return air. Among them, the pneumatic air valve is one of the ways to automatically control the opening and closing of the air valve. When the compressed air enters the pneumatic actuator, the gas pushes the double pistons to move linearly at both ends, and the rack on the piston drives the gear on the rotating shaft to rotate 90° counterclockwise, and the valve is opened. At this time, the gas at both ends of the pneumatic actuator pushes the double pistons to move linearly in the middle with the gas of the B nozzle, and the rack on the piston drives the rack on the rotating shaft to rotate 90° clockwise, and the valve is closed. At this time, the gas in the middle of the pneumatic actuator is discharged with the A nozzle. The above is the transmission principle of the standard type.

[0003] Pneumatic dampers usually have two air ports connected to the air ducts. When the pneumatic damper is idle, dust may enter the two air ports. The fine dust will affect the internal parts of the damper and affect the service life of the pneumatic damper. In addition, there are air ducts at both ends of the damper. When the ventilation and wind-stopping effects are not good, it is not easy to determine whether the problem is that the damper blades are not tightly opened and closed. It needs to be disassembled for inspection, which is troublesome.

[0004] In view of this, research and improvement are conducted on the existing problems, and a damper for a pneumatic ventilation system is provided, aiming to achieve the purpose of solving the problem and improving the practical value through this technology. Utility Model Content

[0005] The purpose of the utility model is to provide a damper for a pneumatic ventilation system to solve the problems and shortcomings of the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides a damper for a pneumatic ventilation system, which is achieved by the following specific technical means:

[0007] A wind valve of a pneumatic ventilation system comprises: a pneumatic mechanism main body, an air inlet, a valve body, an indicator groove, a valve fan, a valve stem, an indicator block, a screw, a guide strip, a slide plate, a knob, and a plug; an air inlet is provided on the outer wall of the pneumatic mechanism main body; the valve body is bolted to the lower end of the pneumatic mechanism main body, and an indicator groove is provided on the outer wall of the valve body; the upper end of the valve fan is plug-connected with a valve stem, and the valve stem is plug-connected to the inner wall of the valve body as a rotating device; the indicator block is installed on the inner wall of the indicator groove, and the indicator block is fixed to the outer wall of the valve stem by screws; the guide strip is welded to the outer wall of the pneumatic mechanism main body, and the slide plate is plug-connected to the outer wall of the guide strip; the knob is screwed to the inner wall of the slide plate, and the plug bolt is fixed to one end of the knob.

[0008] As a further optimization of the technical solution, the guide strip of the air valve of a pneumatic ventilation system of the utility model is a strip structure with an "L"-shaped cross-section, and the two guide strips are symmetrically installed.

[0009] As a further optimization of the technical solution, a groove for accommodating the guide strip is provided on the outer wall of the slide plate of the air valve of a pneumatic ventilation system of the utility model, and the slide plate is plugged and connected to the outer wall of the guide strip as a sliding device.

[0010] As a further optimization of the technical solution, the utility model provides a pneumatic ventilation system air valve, wherein the outer wall of the knob is provided with threads, and the outer wall of the slide plate is provided with threaded holes for matching with the knob, and the positions of the threaded holes correspond to the air inlet.

[0011] As a further optimization of the technical solution, the plug of the air valve of a pneumatic ventilation system of the utility model is made of rubber material, and the plug bolt is fixed on the outer wall of the knob on one side close to the air inlet.

[0012] As a further optimization of the technical solution, the indicator groove of the air valve of a pneumatic ventilation system of the utility model is a long strip-shaped groove for accommodating an indicator block, and the indicator block is plugged and connected to the inner wall of the indicator groove as a sliding device.

[0013] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0014] 1. The guide strip of the utility model is a strip structure with an "L"-shaped cross section, and the two guide strips are symmetrically installed; a groove for accommodating the guide strip is opened on the outer wall of the slide plate, and the slide plate is plugged and connected to the outer wall of the guide strip as a sliding device, and the slide plate can be slid up and down to block or expose the air inlet, so as to protect the air inlet conveniently.

[0015] 2. The outer wall of the knob of the utility model is provided with a thread, and the outer wall of the slide plate is provided with a threaded hole for matching the knob, and the position of the threaded hole corresponds to the air inlet; the plug is made of rubber, and the plug bolt is fixed to the outer wall of the knob on the side close to the air inlet. Turning the knob can make the plug inserted into the air inlet to prevent dust from entering the pneumatic mechanism body when it is idle, thereby damaging the internal parts of the pneumatic mechanism body.

[0016] 3. The indicator groove of the utility model is a long strip-shaped groove for accommodating the indicator block, and the indicator block is plugged and connected to the inner wall of the indicator groove as a sliding device. When the valve fan rotates, the indicator block rotates with the valve fan, and can display the state of the valve fan in the valve body, which is convenient for judging the opening and closing status of the valve fan.

[0017] 4. The utility model improves the air valve of a pneumatic ventilation system, has the advantages of reasonable structural design, prevents dust from entering the air inlet, and facilitates the detection of the opening and closing state of the air valve, thereby effectively solving the problems and shortcomings of the existing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0021] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0022] Figure 4 It is a partial cross-sectional structural schematic diagram of the utility model;

[0023] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the utility model.

[0024] In the figure: pneumatic mechanism main body 1, air inlet 101, valve body 2, indicator groove 201, valve fan 3, valve stem 301, indicator block 4, screw 5, guide strip 6, slide plate 7, knob 8, plug 9. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See also Figures 1 to 5 The utility model provides a specific technical implementation scheme of a damper of a pneumatic ventilation system:

[0027] A wind valve of a pneumatic ventilation system comprises: a pneumatic mechanism main body 1, an air inlet 101, a valve body 2, an indicator groove 201, a valve fan 3, a valve stem 301, an indicator block 4, a screw 5, a guide strip 6, a slide plate 7, a knob 8, and a plug 9; an air inlet 101 is provided on the outer wall of the pneumatic mechanism main body 1; the valve body 2 is bolted to the lower end of the pneumatic mechanism main body 1, and an indicator groove 201 is provided on the outer wall of the valve body 2; the indicator groove 201 is a long strip-shaped groove for accommodating the indicator block 4, and the indicator block 4 is plugged and connected to the inner wall of the indicator groove 201 as a sliding device. When the valve fan 3 rotates, the indicator block 4 rotates with the valve fan 3, and can display the state of the valve fan 3 in the valve body 2 to facilitate the judgment of the opening and closing of the valve fan 3.

[0028] The upper end of the valve fan 3 is plugged into a valve stem 301, and the valve stem 301 is plugged into the inner wall of the valve body 2 to form a rotating device; the indicator block 4 is installed on the inner wall of the indicator groove 201, and the indicator block 4 is fixed to the outer wall of the valve stem 301 by a screw 5; the guide bar 6 is welded to the outer wall of the pneumatic mechanism body 1, and the slide plate 7 is plugged into the outer wall of the guide bar 6; the guide bar 6 is a strip structure with an "L"-shaped cross-section, and the two guide bars 6 are symmetrically installed; a groove for accommodating the guide bar 6 is provided on the outer wall of the slide plate 7, and the slide plate 7 is plugged into the outer wall of the guide bar 6 to form a sliding device, and the slide plate 7 can be slid up and down to block or expose the air inlet 101, so as to protect the air inlet 101 conveniently.

[0029] The knob 8 is screwed on the inner wall of the slide 7, and the plug 9 is bolted to one end of the knob 8; a thread is provided on the outer wall of the knob 8, and a threaded hole for matching the knob 8 is opened on the outer wall of the slide 7, and the position of the threaded hole corresponds to the air inlet 101; the plug 9 is made of rubber material, and the plug 9 is bolted to the outer wall of the knob 8 on one side close to the air inlet 101. Turning the knob 8 can make the plug 9 be inserted into the air inlet 101 to prevent dust from entering the pneumatic mechanism body 1 when it is idle, thereby damaging the internal parts of the pneumatic mechanism body 1.

[0030] Specific implementation steps:

[0031] Connect the valve body 2 to the air ducts on both sides, insert the air pipe into the air inlet 101, and control the pneumatic mechanism body 1 to rotate the valve fan 3 to open or close it as needed. The opening and closing status of the valve fan 3 can be judged by the rotation position of the indicator block 4. If the pneumatic mechanism body 1 is not used for a long time, the slide plate 7 can be slid downward to align the plug 9 with the air inlet 101, and the knob 8 is turned to insert the plug 9 into the air inlet 101 to protect it.

[0032] In summary: the air valve of the pneumatic ventilation system is a strip structure with an "L"-shaped cross-section through a guide strip, and the two guide strips are symmetrically installed; a groove for accommodating the guide strip is provided on the outer wall of the slide plate, and the slide plate is plugged and connected to the outer wall of the guide strip as a sliding device, and the slide plate can be slid up and down to block or expose the air inlet, so as to protect the air inlet conveniently; a thread is provided on the outer wall of the knob, and a threaded hole for matching the knob is provided on the outer wall of the slide plate, and the position of the threaded hole corresponds to the air inlet; the plug is made of rubber, and the plug bolt is fixed to the outer wall of the knob on the side close to the air inlet, and the knob is turned The plug can be inserted into the air inlet to prevent dust from entering the pneumatic mechanism body when it is idle, thereby damaging the internal parts of the pneumatic mechanism body; the indicator groove is a long strip-shaped groove for accommodating the indicator block, and the indicator block is plugged and connected to the inner wall of the indicator groove as a sliding device. When the valve fan rotates, the indicator block rotates with the valve fan, and can display the state of the valve fan in the valve body, which is convenient for judging the opening and closing status of the valve fan; through the improvement of the air valve of a pneumatic ventilation system, it has the advantages of reasonable structural design, preventing dust from entering the air inlet, and facilitating the detection of the opening and closing status of the air valve, thereby effectively solving the problems and shortcomings of the existing device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A damper for a pneumatic ventilation system, comprising: A pneumatic mechanism body (1), an air inlet (101), a valve body (2), an indicator groove (201), a valve leaf (3), a valve stem (301), an indicator block (4), a screw (5), a guide strip (6), a slide plate (7), a knob (8), and a plug (9); characterized in that: an air inlet (101) is provided on the outer wall of the pneumatic mechanism body (1); the valve body (2) is bolted to the lower end of the pneumatic mechanism body (1), and an indicator groove (201) is provided on the outer wall of the valve body (2); the upper end of the valve leaf (3) is plugged into the A valve stem (301) is connected, and the valve stem (301) is plugged and connected to the inner wall of the valve body (2) to form a rotating device; the indicator block (4) is installed on the inner wall of the indicator groove (201), and the indicator block (4) is fixed to the outer wall of the valve stem (301) by means of screws (5); the guide strip (6) is welded to the outer wall of the pneumatic mechanism body (1), and the slide plate (7) is plugged and connected to the outer wall of the guide strip (6); the knob (8) is screwed and connected to the inner wall of the slide plate (7), and the plug (9) is bolted and fixed to one end of the knob (8).

2. The air valve of a pneumatic ventilation system according to claim 1, characterized in that: The guide strip (6) is a strip structure with an "L"-shaped cross section, and the two guide strips (6) are symmetrically installed.

3. The air valve of a pneumatic ventilation system according to claim 1, characterized in that: A groove for accommodating the guide strip (6) is provided on the outer wall of the slide plate (7), and the slide plate (7) is plug-connected to the outer wall of the guide strip (6) to form a sliding device.

4. The air valve of a pneumatic ventilation system according to claim 1, characterized in that: The outer wall of the knob (8) is provided with a thread, and the outer wall of the slide plate (7) is provided with a threaded hole for matching the knob (8), and the position of the threaded hole corresponds to the air inlet (101).

5. The air valve of a pneumatic ventilation system according to claim 1, characterized in that: The plug (9) is made of rubber, and the plug (9) is bolted to the outer wall of the knob (8) on one side close to the air inlet (101).

6. The air valve of a pneumatic ventilation system according to claim 1, characterized in that: The indicating groove (201) is a long strip-shaped groove for accommodating the indicating block (4), and the indicating block (4) is plugged and connected to the inner wall of the indicating groove (201) as a sliding device.

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