A constant air volume valve for tunnel ventilation system

Abstract

The present invention relates to the technical field of manufacturing special equipment for tunnel ventilation systems, and discloses a constant air volume valve for a tunnel ventilation system, comprising a metal outer box, a first arc-shaped adjustment groove is provided inside the metal outer box, the inside of the first arc-shaped adjustment groove is fixedly connected to a circular protrusion block, the outside of the circular protrusion block is provided with an anti-shake cylinder, the outside of the anti-shake cylinder is fixedly connected to a first wind shield, the outside of the anti-shake cylinder is provided with a hook groove, the outside of the hook groove is movably connected to a first metal rod, the outside of the first metal rod is provided with a metal hook, and the outside of the first metal rod is fixedly connected to a second wind shield; the present invention facilitates the constant output of the wind pressure in the pipe by nesting the anti-shake cylinder into the groove formed by the circular protrusion blocks when the wind pressure in the vent fluctuates, thereby preventing the fluctuation from causing unstable ventilation of the constant air volume valve, thereby effectively optimizing the operator's experience.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation system valves, and more particularly to a constant air volume valve for a tunnel ventilation system. Background Art

[0002] The constant air volume valve of the ventilation system is a mechanical self-powered device suitable for ventilation systems that require a constant air volume. The air volume control of this device does not require external power, but relies on the air flow force in the ventilation duct to position the inclination angle of the baffle in the control valve, thereby controlling the entire pressure difference range to a pre-set flow rate. Adding a set air volume valve to the exhaust or supply and exhaust system can effectively ensure the positive pressure value of the clean room.

[0003] The existing constant air volume valve of the tunnel ventilation system, in order to facilitate the automatic adjustment of the air outlet size of the vent in daily use, uses the wind to blow the wind shield to drive the spring hanging rod to move, and then uses the spring to push and pull the spring hanging rod to adjust the opening size according to the wind pressure. However, due to the lack of a stabilizing device, when the wind pressure becomes unstable, the wind shield will fluctuate up and down, resulting in insufficient stability of the discharged air pressure, which affects the operator's experience.

[0004] The existing constant air volume valve of the ventilation system provides a stabilizing device for its wind shield by nesting the anti-shake cylinder in the groove formed by the circular raised block. When the wind is too strong, the anti-shake cylinder moves to the maximum position, and the tension of the hanging rod spring cannot pull the anti-shake cylinder to the initial position, resulting in the baffle being unable to change, thus affecting the operator's experience. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a constant air volume valve for a tunnel ventilation system to solve the problems existing in the above-mentioned background technology.

[0006] The present invention provides the following technical solution: a constant air volume valve of a tunnel ventilation system, comprising a metal outer box, a first arc-shaped adjustment groove is provided inside the metal outer box, the inside of the first arc-shaped adjustment groove is fixedly connected to a circular protrusion block, the outside of the circular protrusion block is provided with an anti-shake cylinder, the outside of the anti-shake cylinder is fixedly connected to a first wind shield, the outside of the anti-shake cylinder is provided with a hook groove, the outside of the hook groove is movably connected to a first metal rod, the outside of the first metal rod is provided with a metal hook, the outside of the first metal rod is fixedly connected to a second wind shield, the bottom of the second wind shield is fixedly connected to a first bearing, the outside of the first bearing is movably connected to a torsion spring, the inside of the metal outer box is movably sleeved with a first bolt, the outside of the first bolt is movably sleeved with a first spring hanging rod, the inside of the first spring hanging rod is movably connected to a hanging rod spring, and the outside of the hanging rod spring is fixedly connected to a second spring hanging rod.

[0007] Furthermore, the exterior of the metal outer box is fixedly connected to the ventilation duct, the interior of the metal outer box is movably connected to the box plug-in board, and the exterior of the box plug-in board is fixedly connected to the plug-in board handle.

[0008] Furthermore, the outside of the metal outer box is fixedly connected to a nut moving track, the inside of the nut moving track is movably sleeved with a fixed nut, and the inside of the fixed nut is movably sleeved with a second bolt.

[0009] Furthermore, the interior of the ventilation duct is fixedly connected to a fixed windshield, the interior of the fixed windshield is movably sleeved with a second bearing, and the exterior of the second bearing is movably sleeved with a first bolt.

[0010] Furthermore, the interior of the anti-shake cylinder is fixedly connected to a reset spring, and the exterior of the reset spring is fixedly connected to a rubber push-twist.

[0011] Furthermore, a second arc-shaped adjustment groove is provided inside the metal outer box, and a metal rod baffle is provided at the bottom of the second arc-shaped adjustment groove.

[0012] The technical effects and advantages of the present invention are as follows:

[0013] The present invention makes the wind pressure of the constant air volume valve of the ventilation system unstable when the wind pressure in the tunnel vent fluctuates. When the wind pressure in the pipeline reaches a specific level, the circular protrusion block installed inside the first arc-shaped adjustment groove can be used to nest the anti-shake cylinder into the groove formed by the circular protrusion block, so as to control the first wind shield from shaking due to wind force changes, thereby facilitating the constant output of the wind pressure in the pipe and preventing it from fluctuating and causing unstable ventilation of the constant air volume valve, thereby effectively optimizing the operator's experience.

[0014] The present invention embeds the anti-shake cylinder in the groove of the circular protrusion block, so that when the wind pressure is too low and the circular protrusion block cannot be reset, the torsion spring installed on the first bearing at the bottom of the second wind shield can be used to stretch the first metal rod backward when the wind force is too low, thereby stretching the anti-shake cylinder to an area where the wind pressure is sufficient for the hanging rod spring to be stretched and reset, and automatic adjustment is performed. When the wind pressure in the ventilation duct is large, the second wind shield will be pushed down, and the connection between the first metal rod and the anti-shake cylinder will be used to push it downward step by step, thereby adjusting the size of the wind pressure opening, thereby effectively optimizing the user experience of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the hanging rod spring structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the nut moving track structure of the present invention.

[0018] Figure 4 This is a schematic structural diagram of the first metal rod of the present invention.

[0019] Figure 5 It is a schematic diagram of the anti-shake cylindrical structure of the present invention.

[0020] Figure 6 This is a schematic structural diagram of the first windshield of the present invention.

[0021] The accompanying drawings are marked as follows: 1. Metal outer box; 2. First arc-shaped adjustment groove; 3. Circular raised block; 4. Anti-shake cylinder; 5. First wind shield; 6. Hook groove; 7. Metal hook; 8. First metal rod; 9. Second wind shield; 10. First bearing; 11. Torsion spring; 101. Ventilation duct; 102. Box plug-in plate; 103. Plug-in plate handle; 104. First bolt; 105. First spring hanging rod; 106. Hanging rod spring; 107. Second spring hanging rod; 108. Nut moving track; 109. Fixed nut; 110. Second bolt; 201. Fixed wind shield; 202. Second bearing; 203. Return spring; 204. Rubber push-twist; 205. Second arc-shaped adjustment groove; 206. Metal rod baffle. DETAILED DESCRIPTION

[0022] The technical solutions of the present invention will be described clearly and completely below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The constant air volume valve of the ventilation system involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Reference Figure 1-6The present invention provides a constant air volume valve for a tunnel ventilation system, comprising a metal outer box 1, a first arc-shaped adjusting groove 2 is provided inside the metal outer box 1, a circular protrusion block 3 is fixedly connected to the inside of the first arc-shaped adjusting groove 2, an anti-shake cylinder 4 is provided on the outside of the circular protrusion block 3, and the outside of the anti-shake cylinder 4 is fixedly connected to a first wind shield 5. When the wind pressure in the vent fluctuates, the wind pressure of the constant air volume valve of the ventilation system will become unstable. When the wind pressure in the pipe reaches a certain level, the circular protrusion block 3 installed inside the first arc-shaped adjusting groove 2 can be nested into the circular protrusion block 4 to adjust the wind pressure. The first windshield 5 is in the groove formed by the shaped protrusion block 3, thereby controlling the first windshield 5 not to shake due to the change of wind force, so as to facilitate the constant output of the wind pressure in the pipe, prevent its fluctuation and cause the ventilation of the constant air volume valve to be unstable, thereby effectively optimizing the operator's use experience, the outside of the anti-shake cylinder 4 is provided with a hook groove 6, the outside of the hook groove 6 is movably connected to the first metal rod 8, the outside of the first metal rod 8 is provided with a metal hook 7, the outside of the first metal rod 8 is fixedly connected to the second windshield 9, the bottom of the second windshield 9 is fixedly connected to the first bearing 10, and the outside of the first bearing 10 is movably connected to the torque The spring 11 is conducive to nesting the anti-shake cylinder 4 in the groove of the circular protrusion block 3, so that when the wind pressure is too small and the circular protrusion block 3 cannot be reset, the torsion spring 11 installed on the first bearing 10 at the bottom of the second wind deflector 9 can be used to stretch the first metal rod 8 to run backward when the wind force is too small, thereby stretching the anti-shake cylinder 4 to an area where the wind pressure is sufficient for the hanging rod spring 106 to stretch and reset, and automatically adjust. When the wind pressure in the ventilation duct is large, the second wind deflector 9 will be pushed down, and the connection between the first metal rod 8 and the anti-shake cylinder 4 will be used to push it downward step by step, thereby adjusting the wind pressure opening. The size of the opening is optimized, thereby effectively optimizing the user experience of the tunnel-specific equipment. The internal movably sleeve of the metal outer box 1 is connected to the first bolt 104, and the external movably sleeve of the first bolt 104 is connected to the first spring hanging rod 105. The internal movably connected first spring hanging rod 105 is connected to the hanging rod spring 106, and the external fixed connection of the hanging rod spring 106 is connected to the second spring hanging rod 107. It is beneficial to adjust the distance between the first spring hanging rod 105 and the second spring hanging rod 107, so as to facilitate the use of the hanging rod spring 106 to adjust the inclination angle of the first wind shield 5, thereby facilitating the operator to adjust the air flow rate of the vent.

[0024] In a preferred embodiment, the outside of the metal outer box 1 is fixedly connected to the ventilation duct 101, the inside of the metal outer box 1 is movably connected to the box plug-in board 102, and the outside of the box plug-in board 102 is fixedly connected to the plug-in board handle 103, which is conducive to inserting the box plug-in board 102 through the slot opened in the metal outer box 1, thereby protecting the internal components of the metal outer box 1 from damage.

[0025] In a preferred embodiment, the outside of the metal outer box 1 is fixedly connected to the nut moving track 108, the internal movably sleeved fixed nut 109 of the nut moving track 108, and the internal movably sleeved fixed nut 109 of the fixed nut 109 is conveniently sleeved with the second bolt 110, which is conducive to sleeve-fitting the fixed nut 109 through the second bolt 110, thereby facilitating the first spring hanging rod 105 and the second spring hanging rod 107 after adjusting their positions, and then fixing them by mutual squeezing of the second bolt 110 and the fixed nut 109.

[0026] In a preferred embodiment, the interior of the ventilation duct 101 is fixedly connected to the fixed windshield 201, the interior of the fixed windshield 201 is movably sleeved with the second bearing 202, and the exterior of the second bearing 202 is movably sleeved with the first bolt 104, which is conducive to connecting the first spring hanger 105, the second spring hanger 107 and the second bearing 202 through the first bolt 104, thereby adjusting the inclination angle of the first windshield 5 by rotating the second spring hanger 107, and utilizing the hanger spring 106 installed on the first spring hanger 105 to stretch the second spring hanger 107 to limit the moving distance of the second spring hanger 107.

[0027] In a preferred embodiment, the interior of the anti-shake cylinder 4 is fixedly connected to the reset spring 203, and the exterior of the reset spring 203 is fixedly connected to the rubber push knob 204, which is conducive to pushing the rubber push knob 204 through the reset spring 203 installed inside the anti-shake cylinder 4, thereby facilitating the anti-shake cylinder 4 to more conveniently switch positions in the groove of the circular protrusion block 3.

[0028] In a preferred embodiment, a second arc-shaped adjustment groove 205 is opened inside the metal outer box 1, and a metal rod baffle 206 is provided at the bottom of the second arc-shaped adjustment groove 205, which is conducive to facilitating the movement of the first metal rod 8 through the second arc-shaped adjustment groove 205, and the metal rod baffle 206 is used to limit the movement distance of the first metal rod 8.

[0029] The working principle of the present invention is as follows: when the wind pressure in the tunnel vent fluctuates through the constant air volume valve of the ventilation system, the wind pressure of the constant air volume valve of the ventilation system will become unstable. When the wind pressure in the pipe reaches a certain level, the circular protrusion block 3 installed inside the first arc-shaped adjustment groove 2 can be used to nest the anti-shake cylinder 4 into the groove formed by the circular protrusion block 3, so as to control the first wind shield 5 not to shake due to the change of wind force, thereby facilitating the constant output of the wind pressure in the pipe and preventing it from fluctuating and causing the ventilation of the constant air volume valve to be unstable, thereby effectively optimizing the operator's experience. When the wind pressure is too low and the circular protrusion block 3 cannot be reset by nesting the anti-shake cylinder 4 in the groove of the circular protrusion block 3, the first bearing 1 at the bottom of the second wind shield 9 can be used. 0 installed torsion spring 11, when the wind force is too small, stretches the first metal rod 8 to run backward, thereby stretching the anti-shake cylinder 4 to the area where the wind pressure is sufficient for the hanging rod spring 106 to stretch and reset, and automatically adjusts. When the wind pressure in the ventilation duct is large, the second wind shield 9 will be pushed down, and the connection between the first metal rod 8 and the anti-shake cylinder 4 will be used to push it down step by step, so as to adjust the size of the wind pressure opening, thereby effectively optimizing the use experience of the equipment. The outside of the metal outer machine box 1 is fixedly connected to the ventilation duct 101, and the inside of the metal outer machine box 1 is movably socketed with the machine box plug-in plate 102, and the outside of the machine box plug-in plate 102 is fixedly connected to the plug-in plate handle 103, which is conducive to inserting the machine box plug-in plate 102 through the slot opened in the metal outer machine box 1, thereby protecting the internal components of the metal outer machine box 1 from damage.

[0030] The interior of the metal outer box 1 is movably sleeved with the first bolt 104, and the exterior of the first bolt 104 is movably sleeved with the first spring hanging rod 105. The interior of the first spring hanging rod 105 is movably connected to the hanging rod spring 106, and the exterior of the hanging rod spring 106 is fixedly connected to the second spring hanging rod 107, which is beneficial for adjusting the distance between the first spring hanging rod 105 and the second spring hanging rod 107, thereby facilitating the use of the hanging rod spring 106 to adjust the inclination angle of the first wind shield 5, and thus facilitating the operator to adjust the air flow rate of the vent. The exterior of the metal outer box 1 is fixedly connected to the nut moving track 108, and the interior of the nut moving track 108 is movably sleeved with the fixed nut 109, and the interior of the fixed nut 109 is movably sleeved with the second bolt 110, which is beneficial for sleeved into the fixed nut 109 by the second bolt 110, thereby facilitating the first spring hanging rod 105 and the second spring hanging rod 107 after adjusting their positions, and then fixing them by mutual squeezing of the second bolt 110 and the fixed nut 109.

[0031] The interior of the ventilation duct 101 is fixedly connected to the fixed windshield 201, the interior of the fixed windshield 201 is movably sleeved with the second bearing 202, and the exterior of the second bearing 202 is movably sleeved with the first bolt 104, which is conducive to connecting the first spring hanger 105 and the second spring hanger 107 with the second bearing 202 through the first bolt 104, thereby adjusting the inclination angle of the first windshield 5 by rotating the second spring hanger 107, and utilizing the hanger spring 106 installed on the first spring hanger 105 to stretch the second spring hanger 107 to limit the moving distance of the second spring hanger 107.

[0032] The interior of the anti-shake cylinder 4 is fixedly connected to the reset spring 203, and the exterior of the reset spring 203 is fixedly connected to the rubber push knob 204, which is conducive to pushing the rubber push knob 204 through the reset spring 203 installed inside the anti-shake cylinder 4, thereby facilitating the anti-shake cylinder 4 to more conveniently change its position in the groove of the circular protrusion block 3. A second arc-shaped adjustment groove 205 is opened inside the metal outer box 1, and a metal rod baffle 206 is provided at the bottom of the second arc-shaped adjustment groove 205, which is conducive to facilitating the movement of the first metal rod 8 through the second arc-shaped adjustment groove 205, and utilizing the metal rod baffle 206 to limit the moving distance of the first metal rod 8.

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

[0034] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0035] Secondly: The drawings disclosed in this invention only involve structures related to the disclosed invention. Other structures can refer to common designs. In the absence of conflicts, the same scheme and different schemes of the present invention can be combined with each other.

[0036] Finally: The above description is only a preferred 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 constant air volume valve for a tunnel ventilation system, comprising a metal outer casing (1), characterized in that: The metal outer box (1) has a first arc-shaped adjustment groove (2) formed inside, the first arc-shaped adjustment groove (2) is fixedly connected to a circular protrusion (3) inside, an anti-shake cylinder (4) is formed outside the circular protrusion (3), the anti-shake cylinder (4) is fixedly connected to a first windshield (5) outside, a hook groove (6) is formed outside the anti-shake cylinder (4), the hook groove (6) is movably connected to a first metal rod (8) outside the first metal rod (8), a metal hook (7) is formed outside the first metal rod (8), the first metal rod (8) is fixedly connected to a second windshield (9) outside, the bottom of the second windshield (9) is fixedly connected to a first bearing (10), and the first bearing (10) is movably connected to a torsion spring (11) outside. The interior of the metal outer box (1) is movably sleeved with a first bolt (104), the exterior of the first bolt (104) is movably sleeved with a first spring hanging rod (105), the interior of the first spring hanging rod (105) is movably connected to a hanging rod spring (106), and the exterior of the hanging rod spring (106) is fixedly connected to a second spring hanging rod (107).

2. A constant air volume valve for a tunnel ventilation system according to claim 1, characterized in that: The exterior of the metal outer box (1) is fixedly connected to the ventilation duct (101), the interior of the metal outer box (1) is movably connected to the box plug-in board (102), and the exterior of the box plug-in board (102) is fixedly connected to the plug-in board handle (103).

3. The constant air volume valve for a tunnel ventilation system according to claim 1, characterized in that: The outside of the metal outer box (1) is fixedly connected to a nut moving track (108), the inside of the nut moving track (108) is movably sleeved to a fixed nut (109), and the inside of the fixed nut (109) is movably sleeved to a second bolt (110).

4. The constant air volume valve for a tunnel ventilation system according to claim 2, characterized in that: The interior of the ventilation duct (101) is fixedly connected to the fixed windshield (201), the interior of the fixed windshield (201) is movably sleeved with the second bearing (202), and the exterior of the second bearing (202) is movably sleeved with the first bolt (104).

5. The constant air volume valve for a tunnel ventilation system according to claim 1, characterized in that: The interior of the anti-shake cylinder (4) is fixedly connected to a return spring (203), and the exterior of the return spring (203) is fixedly connected to a rubber push-twist (204).

6. The constant air volume valve for a tunnel ventilation system according to claim 1, characterized in that: A second arc-shaped adjustment slot (205) is provided inside the metal outer box (1), and a metal rod baffle (206) is provided at the bottom of the second arc-shaped adjustment slot (205).

Images