Tube collector with adjustable air supplement device

Abstract

The invention relates to the technical field of air treatment, in particular to a pipe collector with an adjustable air supplement device. A main air pipe is arranged at the air inlet end of a shell, an auxiliary air pipe is coaxially arranged in an inner cavity of the main air pipe, a filter plate is rotationally installed in a through groove, a plurality of blades are arranged on the filter plate, and a blocking plate is arranged on the inner wall of the main air pipe; the blocking plate is arranged at one end of the auxiliary air pipe, the first air inlet grid is arranged on the inner wall of the other end of the auxiliary air pipe, the second air inlet grid and the first air inlet grid are concentrically arranged on the outer wall of the auxiliary air pipe, the two rotating rings are rotationally arranged on the inner wall of the main air pipe, and the at least two fixing plates are arranged on the inner walls of the two rotating rings. The at least two cleaning brushes are arranged on the at least two fixing plates, and the flow guide mechanism is arranged on the outer wall, close to the air inlet end, of the main air pipe, so that the problems that the maintenance cost is increased and normal operation of the system is possibly influenced in the cleaning process due to the fact that a traditional filtering system usually needs to be manually cleaned at regular intervals are solved.

Description

Technical Field

[0001] The invention relates to the technical field of air treatment, in particular to a header with an adjustable air supply device. Background Art

[0002] In traditional pneumatic conveying and ventilation systems, the manifold, as the core component of airflow distribution, is often used to connect multiple branch pipes to evenly distribute the airflow to different process flows or locations. However, as the airflow flows in the pipe, the air often contains a large amount of dust particles. These particles not only affect the air quality, but may also settle in the pipe, causing problems such as pipe blockage and equipment wear, affecting the operating efficiency of the system. In order to solve the above problems, many systems will add filter components to the manifold to remove dust from the air through preliminary filtration. However, traditional filtration systems usually require regular manual cleaning, which not only increases maintenance costs, but may also affect the normal operation of the system during the cleaning process, especially in industrial environments with a lot of dust and frequent air flow. Frequent manual maintenance is particularly cumbersome. Summary of the invention

[0003] The object of the present invention is to provide a manifold with an adjustable air supply device to solve the problem mentioned in the above background technology that traditional filtration systems usually require regular manual cleaning, which increases maintenance costs and may also affect the normal operation of the system during the cleaning process.

[0004] To achieve the above object, the present invention provides the following technical solution: a header, comprising: A shell, one end of which is an air inlet end, and the other end of which is an air outlet end; A main air duct, arranged on the air inlet end of the shell; A secondary air duct is coaxially arranged in the inner cavity of the main air duct, an air duct is formed between the secondary air duct and the main air duct, and a plurality of through grooves are opened on the outer wall of the secondary air duct; A filter plate is rotatably mounted in the through groove; A plurality of blades are arranged on the filter plate; A blocking plate is arranged on the inner wall of the main air duct, and the blocking plate is arranged at one end of the auxiliary air duct, and an air groove is opened on the end surface of the blocking plate, and the air groove corresponds to the position of the air duct; A first air inlet grille is provided on the inner wall of the other end of the auxiliary air duct; a second air inlet grille, arranged concentrically with the first air inlet grille on the outer wall of the auxiliary air duct; Two rotating rings are rotatably arranged on the inner wall of the main air duct; At least two fixing plates are arranged on the inner walls of the two rotating rings; At least two cleaning brushes are disposed on at least two of the fixed plates; The flow guiding mechanism is arranged on the outer wall of the main air duct close to the air inlet end.

[0005] Preferably, the rotation angle of the filter plate is ±180°.

[0006] Preferably, the air inlet direction of the first air inlet grille is from the air inlet end of the shell to the air outlet end of the shell, and the air inlet direction of the second air inlet grille is opposite to that of the first air inlet grille, that is, from the air outlet end of the shell to the air inlet end of the shell.

[0007] Preferably, the fixing plate is a paddle structure.

[0008] Preferably, the flow guiding mechanism comprises: An extension pipe is arranged at the end of the main air duct away from the shell, the outer wall of the extension pipe is provided with a guide port, and the inner wall of the guide port is provided with a slot along the axial direction of the extension pipe; A flap, rotatably disposed on the inner wall of the extension tube; A baffle plate is slidably disposed in the guide port; An inserting plate, arranged on the end surface of the baffle plate and corresponding to the slot; A dial plate, which is arranged on the baffle plate along the radial direction of the extension tube and is located on the inner wall of the extension tube; A reset member is arranged between the plug board and the slot.

[0009] Preferably, a snap-fit ​​structure is provided at the junction between the plug board and the slot.

[0010] Preferably, along the axial direction of the extension tube, the size of the baffle is smaller than the size of the guide port, and along the axial direction of the extension tube, the total size of the baffle and the plug plate is larger than the size of the guide port.

[0011] Preferably, the air supply device comprises: A supplementary air pipe, one end of which is arranged on the outer wall of the main air pipe and is connected to the air duct; An air supply valve is arranged in the inner cavity of the air supply pipe; The muffler is arranged at the end of the air supply pipe.

[0012] Preferably, the connection between the air supply duct and the main air duct is achieved through a flexible connector.

[0013] Preferably, the inner cavity of the air supply pipe is provided with a plurality of air flow diversion holes.

[0014] The present invention proposes a manifold with an adjustable air supply device, which has the beneficial effect that: the present invention controls the direction of the filter plate by changing the flow direction of the airflow, and uses the airflow and a cleaning brush to clean the dust on the filter plate, which not only greatly reduces the need for manual maintenance, but also ensures the long-term and efficient operation of the system, increases the service life of the filter plate, maintains the low-resistance operation of the system, and helps to improve the filtration efficiency and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a first partial schematic diagram of the present invention; Figure 3 Schematic diagram of the first air intake grille and the second air intake grille of the present invention; Figure 4 It is a second partial schematic diagram of the present invention; Figure 5 This is a schematic diagram of the main air duct and filter plate of the present invention; Figure 6 It is a schematic diagram of the air supply device of the present invention; Figure 7 Schematic diagram of the flow guiding mechanism of the present invention.

[0016] In the figure: 1, shell, 2, main air duct, 31, auxiliary air duct, 32, through groove, 4, filter plate, 5, blade, 61, blocking plate, 62, air groove, 7, first air inlet grille, 8, second air inlet grille, 9, swivel, 10, fixing plate, 11, cleaning brush, 12, flow guide mechanism, 121, extension pipe, 122, flap, 123, baffle, 124, plug plate, 125, dial plate, 126, reset member, 127, slot, 128, flow guide port, 13, air supply device, 131, air supply duct, 132, air supply valve, 133, muffler, 14, auxiliary fan. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-7 The present invention provides a technical solution for a manifold with an adjustable air supply device. The detailed connection means are well known in the art. The following mainly introduces the working principle and process. The specific work is as follows.

[0019] A manifold comprises: a shell 1, a main air duct 2, an auxiliary air duct 31, a filter plate 4, a plurality of blades 5, a blocking plate 61, a first air intake grille 7, a second air intake grille 8, two rotating rings 9, at least two fixing plates 10, at least two cleaning brushes 11 and a flow guide mechanism 12.

[0020] One end of the shell 1 is the air inlet end, and the other end of the shell 1 is the air outlet end. The shell 1 is a hollow structure for accommodating and guiding the airflow from the air inlet end to the air outlet end. The air inlet end is connected to an external air source, and the air outlet end is connected to a downstream pipeline or equipment to ensure that the airflow passes smoothly through the entire system. There is no specific limitation on the shape of the shell 1 of the collector, and it is usually designed according to the use requirements and airflow characteristics of the system, including but not limited to the use of a cylindrical shell 1, a rectangular shell 1, a square shell 1, a conical shell 1 or an inverted conical shell 1. At the same time, a guide plate and other structures are arranged in the shell 1, which are not shown in the figure, to ensure the normal operation of the collector. The main air duct 2 is arranged on the air inlet end of the shell 1. The main air duct 2 serves as the main channel of the airflow and is tightly installed at the air inlet end of the shell 1 for preliminary To guide external airflow into the system, the main air duct 2 has a diameter and sealing structure that matches the shell 1 to ensure that the airflow does not leak and maintain the air tightness of the system. The air source at the air inlet end of the main air duct 2 comes from the compressed air system, and high-pressure airflow is usually provided by an air compressor. The main air duct 2 can be selected according to the specific application scenario and system requirements, and then the air inlet end of the main air duct 2 is directly connected to the external environment, and fresh air is sucked from the atmosphere as the air source or recycled air is used. The auxiliary air duct 31 is coaxially arranged in the inner cavity of the main air duct 2, and an air duct is formed between the auxiliary air duct 31 and the main air duct 2. A plurality of through grooves 32 are opened on the outer wall of the auxiliary air duct 31. The auxiliary air duct 31 is coaxially arranged in the inner cavity of the main air duct 2 to ensure the flow of airflow. The design of the auxiliary air duct 31 makes the auxiliary air duct 31 An annular air duct is formed between the main air duct 2 and the auxiliary air duct 31 for air flow to flow along the annular channel. The plurality of through grooves 32 on the outer wall of the auxiliary air duct 31 are used to adjust the air flow and promote air circulation inside and outside the auxiliary air duct 31. The filter plate 4 is rotatably installed in the through groove 32 to adjust the rotation angle of the filter plate 4 according to the change of the air flow. A sealing ring is provided on the outer edge of the filter plate 4 to ensure the sealing between the filter plate 4 and the through groove 32. A plurality of blades 5 are provided on the filter plate 4. The plurality of blades 5 are evenly arranged on the filter plate 4 at a predetermined angle and guide the air direction when the air flow passes through the filter plate 4. When the air flow passes, the filter plate 4 can be caused to rotate. The blocking plate 61 is provided on the inner wall of the main air duct 2 to seal the end of the auxiliary air duct 31 to prevent air flow leakage, and the blocking plate 61 is provided on the auxiliary air duct 31. At one end of the main air duct 2, an air groove 62 is formed on the end surface of the blocking plate 61, and the air groove 62 corresponds to the position of the air duct. The first air inlet grille 7 is arranged on the inner wall of the other end of the auxiliary air duct 31, and its main function is to control the direction of the airflow entering the auxiliary air duct 31, and ensure that the airflow enters the auxiliary air duct 31 from the air inlet end of the shell 1 through the first air inlet grille 7. The second air inlet grille 8 is concentrically arranged on the outer wall of the auxiliary air duct 31 with the first air inlet grille 7, and forms a structure that cooperates with the first air inlet grille 7. Two swivels 9 are rotatably arranged on the inner wall of the main air duct 2 through bearings or sliding structures. At least two fixed plates 10 are arranged on the inner walls of the two swivels 9 and rotate with the swivels 9. At least two cleaning brushes 11 are arranged on at least two fixed plates 10, and an automatic cleaning function is realized with the rotation of the swivel 9.The cleaning brush 11 is used to clean the dust accumulated on the surface of the filter plate 4 and the blade 5 to prevent dust blockage, ensure smooth airflow and long-term efficient operation of the equipment. The softness of the bristles of the cleaning brush 11 meets the cleaning requirements of the filter plate 4, and will not hinder the rotation of the filter plate 4. The guide mechanism 12 is arranged on the outer wall of the main air duct 2 near the air inlet end. When the airflow flows in the reverse direction, the airflow carrying dust is discharged from the position of the guide mechanism 12 and will not flow along the main air duct 2 toward the direction of the initial air source.

[0021] The filter plate 4 has a rotation angle of ±180°, and the filter plate 4 can be adjusted at any time according to the direction of the airflow.

[0022] The air inlet direction of the first air inlet grille 7 is from the air inlet end of the shell 1 to the air outlet end of the shell 1, and the air inlet direction of the second air inlet grille 8 is opposite to that of the first air inlet grille 7, from the air outlet end of the shell 1 to the air inlet end of the shell 1. At the same time, when the air flow direction is from the air inlet end of the main air duct 2 to the air outlet end, the second air inlet grille 8 remains closed and the first air inlet grille 7 remains open. The air flow enters the auxiliary air duct 31 through the first air inlet grille 7, is discharged by the filter plate 4, and enters the shell 1 through the air duct and the air groove 62. At this time, the pressure at the air inlet end of the second air inlet grille 8 is greater than the pressure at the air outlet end of the second air inlet grille 8. Therefore, in the process of airflow flowing from the air inlet end to the air outlet end, the second air inlet grille 8 will not open. When the airflow flows in the opposite direction, the first air inlet grille 7 remains closed, and the airflow will enter the air duct through the air groove 62 and be discharged from the air duct by the second air inlet grille 8. The first air inlet grille 7 and the second air inlet grille 8 are both composed of a grille frame and a movable grille. The movable grille only opens and closes in one direction to form a one-way flow effect of airflow. A spring or gravity effect is used between the movable grille and the grille frame to automatically close the movable grille. At the same time, a sealing strip is provided between the movable grille and the grille frame to prevent air from leaking in from an unauthorized direction.

[0023] The fixed plate 10 is a paddle structure. When the airflow flows through the fixed plate 10, the paddle structure can effectively capture the airflow. The thrust of the airflow on the blades 5 causes the rotating ring 9 to rotate around its axis, thereby causing the fixed brush to make a circular motion on the inner wall of the main air duct 2.

[0024] The flow guiding mechanism 12 includes an extension tube 121 , a flap 122 , a baffle 123 , a plug plate 124 , a dial plate 125 and a reset member 126 .

[0025] The extension tube 121 is arranged at the end of the main air duct 2 away from the housing 1. The outer wall of the extension tube 121 is provided with a guide port 128, which is an outlet for the airflow mixed with dust. Along the axial direction of the extension tube 121, a slot 127 is opened on the inner wall of the guide port 128. The flap 122 is rotatably arranged on the inner wall of the extension tube 121. The flap 122 has two rotation angles, which are 0° and 90°. When the flap 122 is at 0°, the flap 122 is parallel to the inner wall of the extension tube 121, and the airflow can pass smoothly. The extension tube 121 is not blocked by the flap 122. At this time, the system is in an open state, allowing the airflow to flow normally. When the flap 122 rotates to 90°, the flap 122 is perpendicular to the axis of the extension tube 121, blocking the passage of the airflow. At this time, the flap 122 plays a role in closing the airflow and can change the path of the airflow. The control mode of the flap 122 can be selected as manual control or electric automatic control according to system requirements. In the manual mode, the flap 122 is controlled by mechanical operation (such as a pull rod, a knob or a handle). The operator can manually adjust the angle of the flap 122 to control the flow or blocking of the airflow. In the electric automatic control mode, the flap 122 is connected to the electric actuator, and the motor drives the flap 122 to rotate between 0° and 90°. The control system monitors the airflow state through a sensor, and the electric actuator can automatically adjust the angle of the flap 122 according to system requirements, which is not shown in the figure. The baffle 123 is slidably arranged in the guide port 128, and the opening and closing of the guide port 128 is controlled by changing the position of the baffle 123. The plug plate 124 is arranged on the end face of the baffle 123 and corresponds to the slot 127, and is used in conjunction with the baffle 123 to ensure the normal opening and closing of the guide port 128. The paddle plate 125 is arranged on the baffle 123 along the radial direction of the extension tube 121 and is located on the inner wall of the extension tube 121. The paddle rod is in the flip position. On the moving path of plate 122, when the flap 122 rotates from 0° to 90°, it will contact the dial plate 125. When the flap 122 rotates to 90°, the guide port 128 will be in an open state. When the flap 122 is in the 0° state, the guide port 128 is in a closed state. The reset member 126 is arranged between the plug plate 124 and the slot 127. The design of the reset member 126 enables the plug plate 124 to automatically return to its original position when the flap 122 rotates to 0°, thereby ensuring the closed state of the guide port 128. The reset member 126 is usually a spring or other elastic element.

[0026] A buckle structure is provided at the joint of the plug plate 124 and the slot 127, so that the plug plate 124 and the slot 127 can be tightly joined and locked at a specific position to ensure the accuracy of airflow control. The buckle structure can not only improve the airflow sealing and prevent leakage, but also ensure the reliability of airflow distribution and reduce unnecessary movement of the plug plate 124 during operation.

[0027] Along the axial direction of the extension tube 121 , the size of the baffle 123 is smaller than the size of the guide port 128 . Along the axial direction of the extension tube 121 , the total size of the baffle 123 and the plug plate 124 is larger than the size of the guide port 128 .

[0028] The air supply device 13 includes an air supply pipe 131 , an air supply valve 132 and a muffler 133 .

[0029] One end of the air supply pipe 131 is arranged on the outer wall of the main air duct 2 and is connected to the air duct to supply additional airflow to the air duct. By connecting the air supply pipe 131 to the main air duct 2, it is ensured that the airflow can be replenished in time under different working conditions to prevent insufficient airflow from affecting the operation of the system. The gas source of the air supply pipe 131 can have multiple sources according to the specific needs and application scenarios of the system, including but not limited to compressed air system, circulating air, etc. The air supply valve 132 is arranged in the inner cavity of the air supply pipe 131. The air supply valve 132 is installed in the inner cavity of the air supply pipe 131 to adjust the flow rate of the airflow in the air supply pipe 131. Through the dynamic adjustment function of the air supply valve 132, the airflow can be controlled according to actual needs. The amount of supplementation ensures that the system can operate normally under different air flow conditions. The air supply valve 132 can be driven to open or close or adjust the valve by an electric actuator. The electric actuator is connected to the air supply valve 132, and controls the rotation angle of the valve through the received electrical signal, thereby adjusting the size of the airflow. Not shown in the figure, the muffler 133 is arranged at the end of the air supply pipe 131, and is used to reduce the noise generated when the air flow passes through the air supply pipe 131. The muffler 133 can effectively absorb high-frequency noise and improve the operating comfort of the system. It is suitable for use in occasions with high noise control requirements.

[0030] The connection between the supply air duct 131 and the main air duct 2 is achieved through a flexible connector. The flexible connector ensures that the connection between the supply air duct 131 and the main air duct 2 is more flexible, can absorb vibration and impact between the pipes, and avoid damage to the connection parts or airflow leakage due to mechanical stress. The flexible connector can extend the service life of the pipeline system and improve the safety of operation.

[0031] The inner cavity of the air supply pipe 131 is provided with multiple air flow diversion holes. The multiple air flow diversion holes provided in the inner cavity of the air supply pipe 131 can effectively and evenly distribute the supplementary airflow to prevent a single airflow point from being too strong and affecting the system airflow balance. The air flow diversion holes can optimize the flow path of the airflow, ensure that the supplementary air flow can evenly enter the main air duct 2, and improve the overall efficiency of the system.

[0032] An auxiliary fan 14 is provided at the end of the main air duct 2 near the extension tube 121. The auxiliary fan 14 is used to realize the reverse flow of the airflow to ensure that the airflow flows from the air outlet end to the air inlet end of the main air duct 2. At the same time, external equipment, such as industrial vacuum cleaners and other machines, can be connected to the guide port 128 to realize the reverse flow of the airflow and achieve the cleaning effect.

[0033] Working principle: The flap 122 is controlled to be in a 90° state, the main air duct 2 is in a passage, and the guide port 128 is in a closed state. The airflow enters from the air inlet end of the main air duct 2, and enters the inner cavity of the auxiliary air duct 31 through the first air inlet grille 7. Under the action of the airflow and the blade 5, the filter plate 4 is in a positive direction, and at the same time, the edge of the filter plate 4 and the through groove 32 are kept sealed. The airflow is discharged through the wisp holes of the filter plate 4, and dust and other impurities in the airflow will be filtered. The filtered airflow will be discharged from the air groove 62 into the shell 1, and discharged from the air outlet end of the shell 1 to several exhaust pipes. When cleaning is required, the flap 122 is controlled to rotate to 0°, so that the air inlet end of the main air duct 2 is in a closed state, and the wind source of the main air duct 2 is closed at the same time. At this time, the guide port 128 is in an open state, and the auxiliary fan 14 is controlled to operate, or an industrial vacuum cleaner or other equipment is used to make the airflow The air enters from the outlet end of the main air duct 2 through the air duct. When the airflow passes through the air duct, the filter plate 4 rotates 180° with the cooperation of the blades 5, and the side with dust adhered to it is rotated to the outside of the auxiliary air duct 31. At the same time, under the action of the airflow and the fixing plate 10, the swivel 9 will rotate. At this time, the airflow passes through the air duct and is discharged from the second air inlet grille 8, and is discharged to the outside through the guide port 128. At the same time, the rotation of the swivel 9 will prompt the cleaning brush 11 to clean the dust adhered to the surface of the filter plate 4 on the outer wall of the auxiliary air duct 31 to achieve the cleaning effect. After the cleaning is completed, the auxiliary fan 14 is turned off, and the flap 122 is controlled to rotate to a 90° state. The wind source at the air inlet end of the main air duct 2 is started, and the airflow enters the auxiliary air duct 31 through the first air inlet grille 7. Under the action of the airflow, the filter plate 4 will rotate 180° in the opposite direction again, and repeat this process.

[0034] 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 manifold with an adjustable air supply device, characterized in that ,include: A shell (1), one end of the shell (1) being an air inlet end, and the other end of the shell (1) being an air outlet end; A main air duct (2) is arranged on the air inlet end of the housing (1); An auxiliary air duct (31) is coaxially arranged in the inner cavity of the main air duct (2), an air passage is formed between the auxiliary air duct (31) and the main air duct (2), and a plurality of through grooves (32) are formed on the outer wall of the auxiliary air duct (31); A filter plate (4) is rotatably mounted in the through groove (32); A plurality of blades (5) are arranged on the filter plate (4); A blocking plate (61) is arranged on the inner wall of the main air duct (2), and the blocking plate (61) is arranged at one end of the auxiliary air duct (31), and an air groove (62) is formed on the end surface of the blocking plate (61), and the air groove (62) corresponds to the position of the air duct; A first air inlet grille (7) is arranged on the inner wall of the other end of the auxiliary air duct (31); A second air inlet grille (8) is arranged concentrically with the first air inlet grille (7) on the outer wall of the auxiliary air duct (31); Two rotating rings (9) are rotatably arranged on the inner wall of the main air duct (2); At least two fixing plates (10) are arranged on the inner walls of the two rotating rings (9); At least two cleaning brushes (11) are arranged on at least two of the fixing plates (10); The air guide mechanism (12) is arranged on the outer wall of the main air duct (2) close to the air inlet end.

2. The manifold with adjustable air supply device according to claim 1, characterized in that: The rotation angle of the filter plate (4) is ±180°.

3. The header with an adjustable air supply device according to claim 1, characterized in that: The air intake direction of the first air intake grille (7) is from the air intake end of the shell (1) to the air outlet end of the shell (1), and the air intake direction of the second air intake grille (8) is opposite to that of the first air intake grille (7), and is from the air outlet end of the shell (1) to the air intake end of the shell (1).

4. The header with an adjustable air supply device according to claim 1, characterized in that: The fixing plate (10) is a paddle structure.

5. The header with an adjustable air supply device according to claim 1, characterized in that: The flow guiding mechanism (12) comprises: An extension pipe (121) is arranged at an end of the main air pipe (2) away from the housing (1); a flow guide port (128) is arranged on the outer wall of the extension pipe (121); and a slot (127) is arranged on the inner wall of the flow guide port (128) along the axial direction of the extension pipe (121); A flap (122) is rotatably disposed on the inner wall of the extension tube (121); A baffle (123) slidably disposed in the guide port (128); An inserting plate (124) is arranged on the end surface of the baffle (123) and corresponds to the slot (127); A shift plate (125) is arranged on the baffle plate (123) along the radial direction of the extension tube (121) and is located on the inner wall of the extension tube (121); A reset member (126) is arranged between the plug board (124) and the slot (127).

6. The header with an adjustable air supply device according to claim 5, characterized in that: A snap-fit ​​structure is provided at the joint between the plug board (124) and the slot (127).

7. The header with an adjustable air supply device according to claim 5, characterized in that: Along the axial direction of the extension tube (121), the size of the baffle (123) is smaller than the size of the guide port (128), and the total size of the baffle (123) and the plug plate (124) is larger than the size of the guide port (128).

8. The header with an adjustable air supply device according to claim 5, characterized in that: The air supply device (13) comprises: An air supply pipe (131), one end of which is arranged on the outer wall of the main air pipe (2) and is connected to the air duct; An air supply valve (132) is arranged in the inner cavity of the air supply pipe (131); The muffler (133) is arranged at the end of the air supply pipe (131).

9. The header with an adjustable air supply device according to claim 8, characterized in that: The connection between the air supply pipe (131) and the main air pipe (2) is achieved through a flexible connector.

10. The header with an adjustable air supply device according to claim 8, characterized in that: The inner cavity of the air supply pipe (131) is provided with a plurality of air flow diversion holes.

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