Horizontal airflow channel control door device

Abstract

The utility model discloses a horizontal airflow channel control door device which comprises a center shaft, a hole is formed in a shaft body of the center shaft in the length direction of the center shaft, an air channel door penetrates through the hole and is connected with the center shaft through a bolt pin, a door frame plate is arranged on the edge of the air channel door, and the two ends of the center shaft penetrate through the two opposite sides of the door frame plate respectively. One end of the center shaft is connected with a power piece through a transmission unit, and the power piece is connected with one side of the door frame plate. According to the utility model, a central axis symmetric horizontal air duct door is adopted, the design concept that airflow operation is controlled through a horizontal air duct technological process is adopted, the whole door is a left-right rotary switch, the device is arranged at an air inlet and outlet port of a horizontal air duct of each compartment, airflow is in the horizontal direction, and a power cylinder of the air duct door uses energy as an air source; even if the air pressure is insufficient, the air duct door can be always in an open state when the air flow of the induced draft fan runs, so that the smooth passage of the air flow in each sub-chamber is ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of smoke and dust purification equipment, specifically relating to a horizontal airflow channel control door device. Background Technology

[0002] Currently, the most commonly used dust purification equipment in industrial enterprises is the induced draft fan negative pressure closed-loop filter collector. To achieve continuous operation, this equipment requires multiple compartments and matching inlet and outlet ducts within the dust collector. All compartments must undergo offline cleaning to achieve alternating operation, thus meeting the collection needs of dust generated during continuous production. The cleaning system mainly consists of three parts: a lifting valve device, a pulse air manifold distributor device, and a cleaning jet cleaning mechanism. Through automated program settings, the dust accumulated on the filter media surface is periodically circulated and backflushed offline, ultimately achieving continuous and efficient operation.

[0003] However, traditional lift valve devices can no longer meet the requirements for the safe and stable operation of environmental protection equipment and facilities. Defects: The lift valve device is a vertical design, with the valve stem (push-pull lever) positioned at the center of the valve plate. It operates by lifting and pulling up and down to open and close. Therefore, the operating pressure of the power cylinder must be greater than the operating pressure of the induced draft fan used in the dust purification equipment to effectively lift or close the lift valve for normal use. At the same time, to reduce lifting resistance (weight), the commonly used valve plate and valve stem connectors are relatively thin, and only the end of the valve stem connects to the center point of the valve plate; the two are not fully integrated, making them extremely susceptible to damage during use. This can cause them to separate, the valve plate to fall off and cover the channel, interrupting the airflow at that point. Secondly, if the cylinder pressure is too low or the air supply is suddenly interrupted, all lift valves will automatically close, cutting off the airflow in the lift valve channel. This prevents dust from being captured by the dust collection hood at the dust generation point, causing a large-scale spread of dust and resulting in environmental pollution incidents (such as, under the action of safety interlock mechanisms, even causing the entire environmental protection equipment system to shut down). This makes it impossible to guarantee that environmental emissions meet standards during normal production. Utility Model Content

[0004] The purpose of this invention is to provide a horizontal airflow channel control door device, which solves the problem in the prior art where low cylinder pressure causes the lift valve to automatically close.

[0005] The technical solution adopted by this utility model is a horizontal airflow channel control door device, including a central shaft. The shaft of the central shaft has a hole along its length. An air duct door passes through the hole. The air duct door is connected to the central shaft by bolts and pins. The edge of the air duct door is provided with a door frame plate. The two ends of the central shaft pass through the opposite sides of the door frame plate respectively. One end of the central shaft is connected to a power component through a transmission unit. The power component is connected to one side of the outer side of the door frame plate.

[0006] The features of this utility model also include:

[0007] The duct door consists of two steel plates arranged opposite each other. The edges of the two steel plates are connected by side plates. A valve plate frame is connected between the two steel plates. The two steel plates pass through a gap. The central axis is set in the middle of the steel plates. Both steel plates are connected to the central axis by bolts and pins.

[0008] The door frame panel has round holes on both sides. The two ends of the central shaft pass through the two round holes respectively, and bearings are engaged in the two round holes. The ends of the central shaft are connected to the bearings.

[0009] The central shaft has two steps, which are set near the two ends of the central shaft. The steps are matched with the bearings, and the side of the bearing away from the door frame panel is connected to the door frame panel by a fixing clip.

[0010] The transmission unit includes a curved arm, one end of which is connected to the central shaft, and the other end of which is connected to the power component.

[0011] The power components include a power cylinder, the output end of which is connected to the curved arm via a connecting pin, and the power cylinder is connected to the door frame panel.

[0012] The bottom of the power cylinder is connected to a mounting base, which is connected to the door frame panel by bolts.

[0013] A baffle is connected to the inner wall of the door frame panel, and a sealing strip is connected to the side of the baffle away from the door frame panel.

[0014] The beneficial effects of this utility model are:

[0015] This utility model relates to a horizontal airflow channel control door device. It adopts a central axis symmetrical horizontal duct door and a design concept that controls airflow through a horizontal duct airflow process. The door is a 90° left-right rotating switch. The device is placed at the inlet and outlet of the horizontal duct in each compartment, allowing airflow to pass horizontally. The power component of the duct door, the cylinder, consumes air, so even in cases of insufficient air pressure, the duct door can remain open while the induced draft fan is running. This ensures smooth airflow through each compartment and prevents the duct from being completely closed due to accidents involving the air source or the duct door panel. This eliminates the problem of environmental protection equipment system shutdowns and production stoppages, fundamentally solving the pollution control problem caused by the production line and pollution control equipment failing to operate synchronously due to malfunctions. It also addresses the issue of inconsistency between production and environmental control operations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the horizontal airflow channel control door device of this utility model;

[0017] Figure 2 This is a cross-sectional view along direction A of the horizontal airflow channel control door device of this utility model;

[0018] Figure 3 This is a cross-sectional view along direction B of the horizontal airflow channel control door device of this utility model;

[0019] Figure 4 This is a schematic diagram of the central shaft in the horizontal airflow channel control door device of this utility model;

[0020] Figure 5 This is a side view of the central axis in the horizontal airflow channel control door device of this utility model;

[0021] Figure 6 This is a top view of the horizontal airflow channel control door device of this utility model.

[0022] In the diagram: 1. Air duct door, 2. Round hole, 3. Central shaft, 4. Bolt pin, 5. Valve plate frame, 6. Steel plate, 7. Air hole, 8. Vertical rib, 9. Door frame plate, 10. Flange edge, 11. Hole, 12. Step, 13. Baffle, 14. Bearing, 15. Bend arm, 16. Connecting pin, 17. Power cylinder, 18. Fixed seat. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] This utility model relates to a horizontal airflow channel control door device, such as... Figure 1 As shown, the device includes a central shaft 3. A hole 11 is formed along the length of the central shaft 3, and a duct door 1 passes through the hole 11. The duct door 1 is connected to the central shaft 3 by bolts and pins 4. A door frame plate 9 is provided on the edge of the duct door 1. The two ends of the central shaft 3 pass through opposite sides of the door frame plate 9. One end of the central shaft 3 is connected to a power component via a transmission unit, and the power component is connected to one side of the door frame plate 9. The central shaft 3 serves as the axis of symmetry for the duct door 1, transforming the traditional vertical lifting duct valve device that operates up and down into a horizontal device that operates symmetrically left and right around the central shaft. Placing the horizontal device at the inlet and outlet of each compartment's horizontal duct changes the airflow in the collector from the traditional vertical flow from top to bottom in each compartment to a natural horizontal flow pattern in each compartment. The power component drives the duct door 1 to rotate via the central shaft 3. When the air pressure of the power component is insufficient, the duct door 1 can remain open during the operation of the induced draft fan, ensuring smooth airflow in each compartment.

[0025] Example 1

[0026] A horizontal airflow channel control door device includes a central shaft 3. The shaft of the central shaft 3 has a hole 11 along its length. An air duct door 1 passes through the hole 11. The air duct door 1 is connected to the central shaft 3 by bolts and pins 4. A door frame plate 9 is provided around the air duct door 1. The two ends of the central shaft 3 pass through the opposite sides of the door frame plate 9. One end of the central shaft 3 is connected to a power component through a transmission unit. The power component is connected to one side of the outer side of the door frame plate 9.

[0027] like Figure 2-3 As shown, the duct door 1 includes two steel plates 6 arranged opposite each other. The edges of the two steel plates 6 are connected and sealed by side plates to form an integral steel plate with a closed interior. A valve plate frame 5 is connected between the two steel plates 6. The two steel plates 6 pass through the holes 11. The central shaft 3 is set in the middle of the steel plates 6. Both steel plates 6 are connected to the central shaft 3 by bolts 4. The bottom side plates of the steel plates 6 have air holes 7. The duct door 1 is rectangular or elliptical. Round steel is used to set multiple connection support points inside the double-layer steel plates 6. Each point is welded to the inside of the double-layer steel plates 6, similar to the shape of a frame, forming the valve plate frame 5. The periphery of the double-layer steel plates 6 is then welded together with side plates (steel plates) to tightly combine the components of the double-layer steel plates 6, forming a hollow double-layer plate structure with internal support. Next, establish a central axis at equidistant positions on the left and right ends of the double-layer plate. Install a central shaft 3 on the central axis and connect the two ends of the central shaft. Find the center line of the central shaft 3. On the center line of the central shaft 3, with the two ends reserved as the endpoints, chisel out a strip-shaped hole 11 slightly larger than the width of the double-layer plate in the middle part, so that the double-layer plate passes through the hole 11. Finally, use bolts 4 to firmly fix the double-layer plate and the central shaft 3 together to form an axisymmetric air duct door.

[0028] Example 2

[0029] A horizontal airflow channel control door device includes a central shaft 3. The shaft of the central shaft 3 has a hole 11 along its length. An air duct door 1 passes through the hole 11. The air duct door 1 is connected to the central shaft 3 by bolts and pins 4. The edge of the air duct door 1 is provided with a door frame plate 9. The two ends of the central shaft 3 pass through the opposite sides of the door frame plate 9 respectively. One end of the central shaft 3 is connected to a power component through a transmission unit. The power component is connected to one side of the outer side of the door frame plate 9.

[0030] The air duct door 1 includes steel plates 6 arranged opposite each other. The edges of the two steel plates 6 are connected by side plates. A valve plate frame 5 is connected between the two steel plates 6. The two steel plates 6 pass through the hole 11. The central shaft 3 is set in the middle of the steel plates 6. Both steel plates 6 are connected to the central shaft 3 by bolt pins 4. The bottom side plate of the steel plate 6 has an air hole 7.

[0031] The door frame panel 9 has two circular holes 2 on opposite sides. The two ends of the central shaft 3 pass through the two circular holes 2 respectively, and the bearings 14 are respectively engaged in the two circular holes. The end of the central shaft 3 is connected to the bearings 14. The door frame plate 9 is designed according to the shape and size of the air duct door 1. The door frame plate 9 is assembled from steel plates, with flange edges 10 and vertical ribs 8 on the outside. The vertical ribs 8 connect the left and right flanges and the door frame plate 9. The door frame plate 9, flange edges 10, and vertical ribs 8 are welded together. The door frame plate 9 is elliptical or rectangular. The center point is set at the equidistant ends of the length (left and right) of the door frame plate 9. A vertical line is set at the center point, and the two ends of the vertical line intersect the two sides of the width (upper and lower) of the door frame plate. These two intersection points are the fixing points at both ends of the door hinge (central axis). Two round holes 2 are set at the fixing points of the door frame plate 9. Bearings 14 are installed in the round holes 2. The bearings 14 and the round holes 2 are tightly fitted. The central axis 3 passes through the bearings 14. When the central axis 3 rotates, the bearings 14 roll with it.

[0032] Example 3

[0033] A horizontal airflow channel control door device includes a central shaft 3. The shaft of the central shaft 3 has a hole 11 along its length. An air duct door 1 passes through the hole 11. The air duct door 1 is connected to the central shaft 3 by bolts and pins 4. The edge of the air duct door 1 is provided with a door frame plate 9. The two ends of the central shaft 3 pass through the opposite sides of the door frame plate 9 respectively. One end of the central shaft 3 is connected to a power component through a transmission unit. The power component is connected to one side of the outer side of the door frame plate 9.

[0034] The air duct door 1 includes steel plates 6 arranged opposite each other. The edges of the two steel plates 6 are connected by side plates. A valve plate frame 5 is connected between the two steel plates 6. The two steel plates 6 pass through the hole 11. The central shaft 3 is set in the middle of the steel plates 6. Both steel plates 6 are connected to the central shaft 3 by bolt pins 4. The bottom side plate of the steel plate 6 has an air hole 7.

[0035] The door frame panel 9 has two circular holes 2 on opposite sides. The two ends of the central shaft 3 pass through the two circular holes 2 respectively, and the bearings 14 are respectively engaged in the two circular holes. The end of the central shaft 3 is connected to the bearings 14.

[0036] like Figure 4-5 As shown, the central shaft 3 has two steps 12 on its shaft body. The two steps 12 are respectively set near both ends of the central shaft 3. The steps 12 match the bearings 14. The side of the bearing 14 away from the door frame panel 9 is connected to the door frame panel 9 by a fixing clip. Steps 12 are provided at equal distances at both ends of the central shaft 3 to prevent the bearings 14 from sliding into the central shaft 3 after installation. The bearings 14 are locked in the round holes 2 set in the door frame panel 9. Fixing clips are set on the outside of the bearings 14 to firmly fix each bearing 14 to the door frame panel 9.

[0037] Example 4

[0038] A horizontal airflow channel control door device includes a central shaft 3. The shaft of the central shaft 3 has a hole 11 along its length. An air duct door 1 passes through the hole 11. The air duct door 1 is connected to the central shaft 3 by bolts and pins 4. The edge of the air duct door 1 is provided with a door frame plate 9. The two ends of the central shaft 3 pass through the opposite sides of the door frame plate 9 respectively. One end of the central shaft 3 is connected to a power component through a transmission unit. The power component is connected to one side of the outer side of the door frame plate 9.

[0039] The air duct door 1 includes steel plates 6 arranged opposite each other. The edges of the two steel plates 6 are connected by side plates. A valve plate frame 5 is connected between the two steel plates 6. The two steel plates 6 pass through the hole 11. The central shaft 3 is set in the middle of the steel plates 6. Both steel plates 6 are connected to the central shaft 3 by bolt pins 4. The bottom side plate of the steel plate 6 has an air hole 7.

[0040] The door frame panel 9 has two circular holes 2 on opposite sides. The two ends of the central shaft 3 pass through the two circular holes 2 respectively, and the bearings 14 are respectively engaged in the two circular holes. The end of the central shaft 3 is connected to the bearings 14.

[0041] The shaft of the central shaft 3 has two steps 12. The two steps 12 are respectively set near the two ends of the central shaft 3. The steps 12 are matched with the bearings 14. The side of the bearings 14 away from the door frame plate 9 is connected to the door frame plate 9 by a fixing clip.

[0042] The transmission unit includes a curved arm 15, which is connected to one end of the central shaft 3, and the end of the curved arm 15 away from the central shaft 3 is connected to the power component. The curved arm 15 is designed to ensure that when the power component applies a horizontal thrust or pull force to it, it has a certain force angle on the central shaft 3, ensuring that the central shaft 3 can be rotated.

[0043] Example 5

[0044] A horizontal airflow channel control door device includes a central shaft 3. The shaft of the central shaft 3 has a hole 11 along its length. An air duct door 1 passes through the hole 11. The air duct door 1 is connected to the central shaft 3 by bolts and pins 4. The edge of the air duct door 1 is provided with a door frame plate 9. The two ends of the central shaft 3 pass through the opposite sides of the door frame plate 9 respectively. One end of the central shaft 3 is connected to a power component through a transmission unit. The power component is connected to one side of the outer side of the door frame plate 9.

[0045] The air duct door 1 includes steel plates 6 arranged opposite each other. The edges of the two steel plates 6 are connected by side plates. A valve plate frame 5 is connected between the two steel plates 6. The two steel plates 6 pass through the hole 11. The central shaft 3 is set in the middle of the steel plates 6. Both steel plates 6 are connected to the central shaft 3 by bolt pins 4. The bottom side plate of the steel plate 6 has an air hole 7.

[0046] The door frame panel 9 has two circular holes 2 on opposite sides. The two ends of the central shaft 3 pass through the two circular holes 2 respectively, and the bearings 14 are respectively engaged in the two circular holes. The end of the central shaft 3 is connected to the bearings 14.

[0047] The shaft of the central shaft 3 has two steps 12. The two steps 12 are respectively set near the two ends of the central shaft 3. The steps 12 are matched with the bearings 14. The side of the bearings 14 away from the door frame plate 9 is connected to the door frame plate 9 by a fixing clip.

[0048] The transmission unit includes a curved arm 15, which is connected to one end of the central shaft 3, and the end of the curved arm 15 away from the central shaft 3 is connected to the power component.

[0049] The power unit includes a power cylinder 17. The output end of the power cylinder 17 is connected to the curved arm 15 via a connecting pin 16. A fixed seat 18 is connected to the bottom of the power cylinder 17, and the fixed seat 18 is connected to the door frame plate 9 via bolts. One end of the central shaft 3 is selected as the power end, which is located at the upper part of the door frame plate 9 in the horizontal direction. The power end is connected to the power cylinder 17 via the curved arm 15. The bottom of the power cylinder 17 is movably connected to the fixed seat 18 via a pin. When the curved arm 15 is pushed or pulled, the power cylinder 17 deflects at a certain angle to ensure that the central shaft 3 can be rotated through the curved arm 15. The fixed seat 18 is fixed to the door frame plate 9 with bolts. Under the action of the power cylinder 17, the air duct door 1 can be opened and closed freely.

[0050] Example 6

[0051] A horizontal airflow channel control door device includes a central shaft 3. The shaft of the central shaft 3 has a hole 11 along its length. An air duct door 1 passes through the hole 11. The air duct door 1 is connected to the central shaft 3 by bolts and pins 4. The edge of the air duct door 1 is provided with a door frame plate 9. The two ends of the central shaft 3 pass through the opposite sides of the door frame plate 9 respectively. One end of the central shaft 3 is connected to a power component through a transmission unit. The power component is connected to one side of the outer side of the door frame plate 9.

[0052] The air duct door 1 includes steel plates 6 arranged opposite each other. The edges of the two steel plates 6 are connected by side plates. A valve plate frame 5 is connected between the two steel plates 6. The two steel plates 6 pass through the hole 11. The central shaft 3 is set in the middle of the steel plates 6. Both steel plates 6 are connected to the central shaft 3 by bolt pins 4. The bottom side plate of the steel plate 6 has an air hole 7.

[0053] The door frame panel 9 has two circular holes 2 on opposite sides. The two ends of the central shaft 3 pass through the two circular holes 2 respectively, and the bearings 14 are respectively engaged in the two circular holes. The end of the central shaft 3 is connected to the bearings 14.

[0054] The shaft of the central shaft 3 has two steps 12. The two steps 12 are respectively set near the two ends of the central shaft 3. The steps 12 are matched with the bearings 14. The side of the bearings 14 away from the door frame plate 9 is connected to the door frame plate 9 by a fixing clip.

[0055] The transmission unit includes a curved arm 15, which is connected to one end of the central shaft 3, and the end of the curved arm 15 away from the central shaft 3 is connected to the power component.

[0056] The power component includes a power cylinder 17. The output end of the power cylinder 17 is connected to the curved arm 15 via a connecting pin 16. A fixed seat 18 is connected to the bottom of the power cylinder 17. The fixed seat 18 is connected to the door frame plate 9 via bolts.

[0057] like Figure 6 As shown, a baffle 13 is connected to the inner wall of the door frame plate 9. A sealing strip is connected to the side of the baffle 13 away from the door frame plate 9. The baffle 13 is located on one side of the central axis 3. On the inner side of the door frame plate 9, two center points are set with the width of the two sides of the door frame plate 9 as endpoints. The two center points are connected and extended to form the center line of the inner closed loop of the frame. Taking the closed state of the door as the standard, and the central axis 3 as the left and right center dividing line of the inner wall of the door frame plate 9, a baffle 13 is set at different positions on the left and right sides of the air duct door 1, with the center line of the inner closed loop of the door frame plate 9 as the reference point. The baffle 13 is welded to the door frame plate 9. A flexible sealing strip is inlaid on the baffle 13. The sealing strip is made of a temperature-resistant and corrosion-resistant flexible sealing material to ensure that the strength is doubled, and that it is firm, reliable, well-sealed, stable and non-deformed. This ensures that the air duct door 1 is in close contact with the sealing strip after it is closed. Thus, the overall assembly of the double-layer horizontal air duct door is completed.

[0058] The working principle of this utility model's horizontal airflow channel control door device is as follows:

[0059] The device is placed at the inlet and outlet of the horizontal air duct of each compartment. The air duct door is a left and right rotating switch. The collector changes the traditional vertical flow direction of airflow from top to bottom in each compartment to a natural horizontal flow mode of airflow in each compartment. The power cylinder 17 drives the air duct door 1 to rotate through the central shaft 3. When the air source pressure of the power cylinder 17 is insufficient, the air duct door 1 can always be in the open state when the induced draft fan is running, ensuring smooth airflow in each compartment.

[0060] This utility model relates to a horizontal airflow channel control door device, which adopts horizontal movable air duct control door technology. It transforms the traditional air duct door that operates by lifting and lowering the door into a horizontal air duct door that operates symmetrically from left to right along a central axis. The airflow changes from the traditional vertical flow to a horizontal and natural flow. This prevents the air duct door from closing due to insufficient air pressure in the power cylinder or other abnormal operation, thus avoiding interruption of airflow and preventing the production line from collecting dust and thus avoiding non-compliant emissions, which could lead to environmental incidents.

Claims

1. A horizontal airflow passage control door apparatus, characterized by, The utility model provides a kind of air duct door, including central shaft (3), the shaft body of the central shaft (3) is opened with aperture (11) along its length direction, air duct door (1) is arranged in the aperture (11), air duct door (1) is connected with central shaft (3) by bolt pin (4), the edge of air duct door (1) is equipped with door frame plate (9), the opposite two sides of the two ends of central shaft (3) pass through door frame plate (9), one end of central shaft (3) is connected with power piece by transmission unit, and power piece is connected with the side of the outside of door frame plate (9).

2. The horizontal airflow passageway control door apparatus according to claim 1, wherein The air duct door (1) includes oppositely arranged steel plates (6), the edges of the two steel plates (6) are connected by side plates, a valve plate net rack (5) is connected between the two steel plates (6), the two steel plates (6) pass through the aperture (11), the central shaft (3) is arranged in the middle of the steel plate (6), and the two steel plates (6) are connected with the central shaft (3) by bolt pins (4).

3. The horizontal airflow passageway control door apparatus as set forth in claim 1, characterized by The opposite two sides of the door frame plate (9) are both provided with round holes (2), and the two ends of the central shaft (3) pass through the two round holes (2) respectively. The two round holes are respectively connected with bearings (14). The end of the central shaft (3) is connected with the bearing (14).

4. The horizontal airflow passageway control door apparatus according to claim 3, wherein The shaft body of the central shaft (3) is provided with two steps (12), and the two steps (12) are respectively arranged near the two ends of the central shaft (3). The steps (12) are matched with the bearings (14). The side of the bearing (14) away from the door frame plate (9) is connected with the door frame plate (9) by a fixing clamp.

5. The horizontal airflow passageway control door apparatus as set forth in claim 1, wherein, The transmission unit includes a bent arm (15), the bent arm (15) is connected with one end of the central shaft (3), and the end of the bent arm (15) away from the central shaft (3) is connected with the power piece.

6. The horizontal airflow passageway control door apparatus as set forth in claim 5, characterized by The power piece includes a power cylinder (17), the output end of the power cylinder (17) is connected with the bent arm (15) through a connecting pin (16), and the power cylinder (17) is connected with the door frame plate (9).

7. The horizontal airflow passageway control door arrangement of claim 6, wherein, The bottom of the power cylinder (17) is connected with a fixing seat (18), and the fixing seat (18) is connected with the door frame plate (9) by a bolt.

8. The horizontal airflow passageway control door apparatus as set forth in claim 1, wherein, The inner wall of the door frame plate (9) is connected with a baffle (13), the side of the baffle (13) away from the door frame plate (9) is connected with a sealing strip, and the baffle (13) is arranged on one side of the central shaft (3).

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