Double-air-door air volume adjusting valve for rail transit

Abstract

The invention discloses a double-air-door air volume adjusting valve for rail transit, and particularly relates to a rail transit ventilation system, the double-air-door air volume adjusting valve comprises shutter air valves which are symmetrically arranged, and adjusting blades are rotationally connected to the shutter air valves in a linear array; the bidirectional driving assembly comprises coupling driving wheels which are coupled, a transmission belt is arranged between the two coupling driving wheels and the two sets of adjusting blades in a sleeving mode, and the transmission belt surrounds in a T shape; and the two groups of adjusting blades rotate to tend to be parallel to each other and extend outwards. The adjusting blades of the shutter air valve are driven through the transmission belt, large-range adjustment of the adjusting blades is achieved, the orientation of the adjusting blades can be adjusted according to the advancing direction of a train, therefore, in the running process of the train in the two directions, the air inlet amount can be adjusted, the adjusting blades can extend outwards, and the air inlet amount can be adjusted. In the low-speed driving process, the air guiding effect is achieved, and the air draft amount of the subsequent centrifugal fan is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit ventilation systems, and in particular to a double-throttle air volume regulating valve for rail transit. Background Art

[0002] The double-throttle air volume regulating valve is a device installed at the air inlet of a train. Its blades are louver-shaped and are used to limit the amount of air flowing in and out.

[0003] China has disclosed a patent for a connection mechanism for a double-throttle air volume regulating valve, publication number CN207292014U, which discloses a throttle (i.e., a shutter-shaped throttle).

[0004] In the prior art including the above-mentioned patent, in some rail transit, direction reversal will be performed when necessary. The louver-shaped air valve driven by a connecting rod is difficult to change the direction of the blades after the reversal, because the change in direction causes the pressure on the louver-shaped blades to increase, which can easily cause the louver-shaped blades to be broken, and after the air volume is reversed, it is more difficult to adjust the air intake. Summary of the invention

[0005] The purpose of the present invention is to provide a double-throttle air volume regulating valve for rail transit, aiming to solve the above-mentioned problems.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a double-throttle air volume regulating valve for rail transit, comprising: The louvered air valves are symmetrically arranged, and the regulating blades are connected to them in a linear array and rotated thereon; A bidirectional drive assembly, comprising coupled driving wheels, a transmission belt is sleeved between the two coupling driving wheels and the two groups of adjusting blades, and the transmission belt is wrapped in a "T" shape; The two groups of regulating blades rotate to a state where they tend to be parallel to each other and extend outward.

[0007] Preferably, the regulating blade extends and rotates within a predetermined range, and retracts and rotates outside the predetermined range.

[0008] Preferably, a connector is rotatably connected to the shutter air valve, and the regulating blade connector is slidably connected to the connector.

[0009] Preferably, a guide head is movably provided on the first side of the adjusting blade, and the guide head guides the airflow into between the two adjusting blades.

[0010] Preferably, an inner sheet is provided on the second side of the regulating blade, and retention protrusions are provided on the inner sheet in a linear array.

[0011] Preferably, the guide head rotates when the adjusting blades extend, and guides air alternately to adjacent adjusting blades.

[0012] Preferably, when the regulating blade is not extended, the guide head guides air toward the regulating blade on the flipped side.

[0013] Preferably, a guide head is movably provided on the first side of the adjusting blade, and air ducts facing the retention protrusion are symmetrically opened in the adjusting blade, and the guide head extends to discharge air alternately toward the two air ducts.

[0014] Preferably, after the guide head flips over beyond a predetermined range along with the adjusting blade, the guide head is driven to discharge air toward the outer air duct.

[0015] Preferably, a limiting plate is symmetrically and movably provided on the first side of the adjusting blade, and the limiting plate moves with the turning of the adjusting blade to limit the direction of the guide head.

[0016] In the above technical scheme, a double-throttle air volume regulating valve for rail transit provided by the present invention has the following beneficial effects: the regulating blades of the louver air valve are driven by a transmission belt to achieve a large range of adjustment of the regulating blades, and the direction of the regulating blades can be adjusted according to the forward direction of the train, so that the air intake volume can be adjusted during driving in both directions, and the regulating blades can extend outward to achieve an air guiding effect during low-speed driving, thereby reducing the exhaust volume of the subsequent centrifugal fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 An overall schematic diagram provided for an embodiment of the present invention; Figure 2 An exploded schematic diagram of a bidirectional drive assembly provided in an embodiment of the present invention; Figure 3 An exploded schematic diagram of the structure of the regulating blade part provided by an embodiment of the present invention; Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 An exploded schematic diagram of the regulating blade and guide head structure provided by an embodiment of the present invention; Figure 6 for Figure 5 The enlarged schematic diagram of point B in the middle; Figure 7 A schematic cross-sectional view of an adjusting blade provided in an embodiment of the present invention; Figure 8 for Figure 7 The enlarged schematic diagram at C in the middle; Fig. 9 A cross-sectional schematic diagram of a bidirectional drive assembly provided by an embodiment of the present invention; Fig.10 A schematic diagram of wind direction when adjusting the blade tilt state provided by an embodiment of the present invention; Description of reference numerals: 1. Shutter damper; 11. Bearing hole; 12. Depression; 2. Adjusting blade; 20. Inner groove; 200. Air duct; 201. Arc expansion groove; 21. Inner plate; 211. Ash collecting groove; 212. Retention protrusion; 22. Outer protrusion; 220. Guide head; 2201. Air guide groove; 2202. Ring groove; 2203. Limiting protrusion; 221. Limiting plate; 2211. Slide groove; 222. Elastic head; 2221. Elastic plate; 23. Connecting head; 231. Drive head; 232. Extension plate; 233. Spring; 234. Limiting ring; 2341. Low-surface groove; 3. Bidirectional drive assembly; 31. Transmission belt; 32. Coupling drive wheel; 33. Tensioning wheel; 34. Cover plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0020] like Figure 1-10 As shown, a double-throttle air volume regulating valve for rail transportation includes: A symmetrically arranged shutter air valve 1, on which adjusting blades 2 are rotatably connected in a linear array; A bidirectional driving assembly 3, comprising coupled driving wheels 32, a transmission belt 31 is sleeved between the two coupling driving wheels 32 and the two groups of adjusting blades 2, and the transmission belt 31 is wrapped in a "T" shape; The two groups of regulating blades 2 rotate to a state where they tend to be parallel to each other and extend outward.

[0021] Specifically, the shutter air valve 1 is provided with a plurality of bearing holes 11 corresponding to the adjusting blades 2, and the adjusting blades 2 are connected to the adjusting blades 2 in a rotational direction along the vertical direction. A cross bar is provided on the top of the two shutter air valves 1, and the cross bar is used to connect the two shutter air valves 1. Two coupling drive wheels 32 are connected to the cross bar in a rotational manner, and the two coupling drive wheels 32 are coupled to drive the two transmission belts 31 to rotate in different directions, so as to realize different orientations of the adjusting blades 2 on the two shutter air valves 1. When the two groups of adjusting blades 2 rotate to a state tending to be parallel to each other (that is, Figure 1 In the state, the two shutter air valves 1 will extend outwards (to Figure 1 For reference, the area between the two louver air valves 1 is inside, and the other two sides are outside. The inside is used to place air conditioning components) to increase the outside air flow into the louver air valve 1 during overload during low-speed operation.

[0022] Furthermore, a tensioning wheel 33 is provided on the crossbar, which plays a tensioning role and limits the transmission belt 31 to wrap around in a "T" shape. The coupling drive wheel 32 and the transmission belt 31 can be a synchronous wheel and a synchronous belt, or a sprocket and a chain.

[0023] In the above technical solution, the adjusting blade 2 of the louver air valve 1 is driven by the transmission belt 31 to realize a large range of adjustment of the adjusting blade 2. The direction of the adjusting blade 2 can be adjusted according to the forward direction of the train, so that the air intake volume can be adjusted during driving in both directions, and the adjusting blade 2 can extend outward to achieve an air guiding effect during low-speed driving, thereby reducing the air exhaust volume of the subsequent centrifugal fan.

[0024] As an embodiment provided by the present invention, the regulating blade 2 extends and rotates within a predetermined range, and retracts and rotates outside the predetermined range.

[0025] Specifically, when the adjustment blade 2 is within a predetermined range, (the predetermined range is Figure 7 The state is taken as a reference, ±18°~±20°), and the regulating blade 2 extends outward to increase the amount of external airflow entering when the train is running at a low speed, thereby reducing the load of the centrifugal fan. When the regulating blade 2 exceeds the predetermined range, the regulating blade 2 will retract into the predetermined range and perform the normal wind guiding work of the regulating blade 2, and will not additionally guide the entry of external airflow.

[0026] Furthermore, a sunken portion 12 is provided on the louver air valve 1, a covering plate 34 is provided on the sunken portion 12, a connecting head 23 is rotatably connected to the sunken portion 12, the connecting head 23 is rotatably connected in the bearing hole 11, a driving head 231 is provided on the connecting head 23, the driving head 231 is coupled with the transmission belt 31 for power transmission, the connecting head 23 of the adjusting blade 2 is slidably connected to the connecting head 23, an inner groove 20 is provided on the adjusting blade 2, an extension plate 232 is provided on the connecting head 23, the extension plate 232 is slidably connected in the inner groove 20, a spring 233 is provided between the two, the spring 233 is used to push the extension plate 232, thereby driving the adjusting blade 2 to slide and extend.

[0027] Furthermore, a limiting ring 234 is provided on the inner wall of the shutter air valve 1, and arc expansion grooves 201 are symmetrically opened on both sides of the adjusting blade 2. When the adjusting blade 2 is within a predetermined range, the limiting ring 234 rotates out of the arc expansion groove 201 and does not restrict the arc expansion groove 201. At this time, the spring 233 is used to push the extension plate 232 to drive the adjusting blade 2 to extend. When the adjusting blade 2 flips beyond the predetermined range, the two ends of the limiting ring 234 slide into the arc expansion groove 201 along the rotation of the adjusting blade 2, thereby compressing the spring 233 and driving the adjusting blade 2 to retract to complete the reset.

[0028] As an embodiment provided by the present invention, a guide head 220 is movably provided on the first side of the regulating blade 2 , and the guide head 220 guides the airflow into between the two regulating blades 2 .

[0029] Specifically, adjust the first side of blade 2 (with Figure 3 For reference, the first side is the left side, and the second side is the right side) a guide head 220 is movably provided, and the guide head 220 is arranged in a linear array on the adjusting blade 2. An arc-shaped groove is opened on the guide head 220. When the adjusting blade 2 extends out of the louver air valve 1, the airflow is guided along the arc-shaped groove on the guide head 220, and the guided airflow enters between the two adjusting blades 2.

[0030] As an embodiment provided by the present invention, an inner sheet 21 is provided on the second side of the regulating blade 2 , and retention protrusions 212 are provided on the inner sheet 21 in a linear array.

[0031] Specifically, an inner sheet 21 is provided on the second side of the adjusting blade 2, and retention protrusions 212 are provided on both sides of the inner sheet 21. When the airflow passes through the inner sheet 21, dust will be retained on the retention protrusions 212, thereby performing preliminary filtration on the airflow passing through the adjusting blade 2, isolating large impurities while filtering long-fiber garbage and dust. Therefore, when the airflow subsequently enters the air-conditioning component for filtration, it contains fewer impurities, which can extend the maintenance time.

[0032] Furthermore, an outer protrusion 22 is provided on the adjusting blade 2, and a guide head 220 is rotatably connected to the outer protrusion 22. When the adjusting blade 2 is extended, the airflow will blow toward the guide head 220, thereby driving the guide head 220 to rotate and alternately guide the air to adjacent adjusting blades 2.

[0033] Furthermore, the guide head 220 is provided with an annular groove 2202, and a limiting protrusion 2203 is provided on the annular groove 2202. The outer protrusion 22 is symmetrically provided with an elastic head 222. When the adjusting blade 2 is not extended, the elastic head 222 on one side moves, so that when the guide head 220 rotates, the elastic head 222 will be restricted by the limiting protrusion 2203, so that the guide head 220 rotates and guides the air toward the adjusting blade 2 on one side, such as Fig.10 As shown, when the adjusting blade 2 is extended, the elastic head 222 will block the guide head 220, so that the guide head 220 will stop briefly when facing the adjacent adjusting blade 2, thereby providing better wind guidance.

[0034] As the optimal embodiment provided by the present invention, a guide head 220 is movably provided on the first side of the adjusting blade 2, and air ducts 200 facing the retention protrusion 212 are symmetrically opened in the adjusting blade 2, and the guide head 220 extends to alternately discharge air toward the two air ducts 200.

[0035] Specifically, a penetrating air guide groove 2201 is provided on the guide head 220. When the air guide groove 2201 faces the adjusting blade 2 on one side, it will overlap with the air duct 200 on that side, thereby guiding the air. The two sides alternately supply air to the louver air valve 1, so that when the train is running slowly, the airflow guided by the air guide groove 2201 is evenly distributed.

[0036] Furthermore, when the guide head 220 flips and tilts with the adjusting blade 2 and exceeds a predetermined range, the guide head 220 will rotate to a fixed position, thereby discharging air to the outer air duct 200. Since the flipping direction of the adjusting blade 2 can be changed, the guide head 220 will also change with the change of the flipping angle of the adjusting blade 2 according to the change in the flipping and tilting direction of the adjusting blade 2.

[0037] Dust is easily accumulated on the adjusting blade 2, so that the opening and closing angle is affected.

[0038] A dust collecting groove 211 is provided on the inner side sheet 21, and the air duct 200 faces between the retention protrusions 212 of the two linear arrays. When the guide head 220 is in an inclined state along with the adjusting blades 2, the train travels at a high speed. At this time, the guide head 220 will guide the airflow into the air duct 200 to blow and move the dust between the retention protrusions 212, so that the dust moves into the dust collecting groove 211 and is intercepted by the baffle plate provided in the dust collecting groove 211.

[0039] Collecting dust can reduce the dust entering the air conditioning component, thereby extending the maintenance time of the air conditioning component and the shutter damper 1.

[0040] Furthermore, a limiting plate 221 is symmetrically and movably provided on the first side of the regulating blade 2, a low surface groove 2341 is provided on the limiting ring 234, elastic support plates fitting the low surface groove 2341 are provided on both sides of the limiting plate 221, a sliding groove 2211 is provided on the outer protrusion 22, the limiting plate 221 is slidably connected to the sliding groove 2211, and the elastic head 222 is provided with an elastic plate 2221. When the regulating blade 2 rotates within a predetermined range, the support plate on the limiting plate 221 moves with the low surface groove 2341. , the elastic head 222 is not restricted, and when the adjusting blade 2 rotates outside the predetermined range, the support plate on the limiting plate 221 moves from the low surface groove 2341 to the limiting ring 234, thereby pushing the limiting plate 221 to slide along the slide groove 2211 and push the elastic plate 2221, driving the elastic head 222 to move and extend into the annular groove 2202 to restrict the limiting protrusion 2203, so that the guide head 220 flips and moves with the adjusting blade 2, and faces the inner side plate 21 of the adjacent adjusting blade 2 in the inclined direction.

[0041] At this time, part of the airflow flowing along the guide head 220 enters the air duct 200, and the other part of the airflow is blown into the middle section of the dust collecting groove 211 along the arc-shaped groove on the guide head 220, collecting the dust in the dust collecting groove 211 to both sides for subsequent cleaning.

[0042] The shutter air valve 1 is driven by a motor coupled to a driving wheel 32 to drive the adjusting blade 2 to rotate and move. When the train is moving forward at a slow speed, the adjusting blade 2 will rotate to a predetermined range. At this time, the spring 23 pushes against the extension plate 232 to drive the adjusting blade 2 to extend, so as to increase the air intake during slow travel. At the same time, the guide head 220 extends to the two air ducts 200 to alternately discharge air and evenly distribute the airflow guided by the air guide groove 2201. When the train is traveling at a fast speed, the adjusting blade 2 flips and tilts beyond the predetermined range. At this time, the limiting plate 221 slides along the slide groove 2211 and pushes against the elastic plate 2221 to drive the elastic The head 222 moves and extends into the annular groove 2202 to limit the limiting protrusion 2203, so that the guide head 220 flips and moves with the adjusting blade 2 toward the inner side sheet 21 adjacent in the inclined direction. The guide head 220 will guide part of the airflow into the air duct 200 to blow and move the dust trapped between the protrusions 212, so that the dust moves into the dust collecting groove 211, and the other part is blown into the middle section of the dust collecting groove 211 along the arc-shaped groove on the guide head 220, and the dust in the dust collecting groove 211 is collected on both sides for subsequent cleaning. When the train changes direction, the guide head 220 can still play its original role and is not affected.

[0043] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A double-throttle air volume regulating valve for rail transit, characterized in that: include: A symmetrically arranged shutter air valve (1) on which adjusting blades (2) are rotatably connected in a linear array; A bidirectional drive assembly (3), comprising coupled coupling drive wheels (32), a transmission belt (31) being sleeved between the two coupling drive wheels (32) and the two groups of regulating blades (2), the transmission belt (31) being wrapped in a "T" shape; The two groups of regulating blades (2) rotate to a state where they tend to be parallel to each other and extend outwards.

2. A double-throttle air volume regulating valve for rail transit according to claim 1, characterized in that: The regulating blade (2) extends and rotates within a predetermined range, and retracts and rotates outside the predetermined range.

3. A double-throttle air volume regulating valve for rail transit according to claim 2, characterized in that: The shutter air valve (1) is rotatably connected to a connecting head (23), and the adjusting blade (2) connecting head (23) is slidably connected to the connecting head (23).

4. A double-throttle air volume regulating valve for rail transit according to claim 1, characterized in that: A guide head (220) is movably provided on a first side of the regulating blade (2), and the guide head (220) guides the airflow to enter between the two regulating blades (2).

5. The double-throttle air volume regulating valve for rail transit according to claim 1, characterized in that: An inner sheet (21) is provided on the second side of the regulating blade (2), and retention protrusions (212) are provided on the inner sheet (21) in a linear array.

6. A double-throttle air volume regulating valve for rail transit according to claim 4, characterized in that: The guide head (220) rotates when the regulating blades (2) extend, and guides air alternately to adjacent regulating blades (2).

7. A double-throttle air volume regulating valve for rail transit according to claim 4, characterized in that: When the regulating blade (2) is not extended, the guide head (220) guides air toward the regulating blade (2) on the flipped side.

8. The double-throttle air volume regulating valve for rail transit according to claim 5, characterized in that: A guide head (220) is movably provided on a first side of the regulating blade (2), and air ducts (200) facing the retention protrusion (212) are symmetrically opened in the regulating blade (2), and the guide head (220) extends to alternately discharge air toward the two air ducts (200).

9. A double-throttle air volume regulating valve for rail transit according to claim 8, characterized in that: After the guide head (220) turns over beyond a predetermined range along with the regulating blade (2), the guide head (220) is driven to discharge air toward the air duct (200) outside.

10. The double-throttle air volume regulating valve for rail transit according to claim 4, characterized in that: A limiting plate (221) is symmetrically and movably provided on a first side of the regulating blade (2), and the limiting plate (221) moves with the turning of the regulating blade (2) to limit the direction of the guide head (220).

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