Volute type efficient shunting air distributor

Abstract

The invention belongs to the technical field of air distributors, and discloses a volute type efficient flow dividing air distributor which comprises a volute, a centrifugal impeller is rotatably mounted in the volute, an air outlet square pipe is evenly divided into four air outlet channels by arranging three flow dividing partition plates, and a flow limiting flow plate and a flow expanding flow plate are arranged, so that the air volume of each channel can be accurately adjusted; by arranging a self-locking unit, the positions of the flow limiting flow plate and the flow expanding flow plate can be locked, position deviation caused by airflow impact in the operation process is prevented, long-term stable operation of equipment is ensured, by arranging a position adjusting unit, remote adjustment of the flow limiting flow plate and the flow expanding flow plate can be achieved, operation is easy and convenient, and the practicability is high. And air distribution can be rapidly adjusted according to actual requirements, and use convenience is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air distributors, in particular to a volute-type high-efficiency split-flow air distributor. Background Art

[0002] In industrial ventilation, air-conditioning systems and air handling equipment, air distributors are key components for achieving uniform airflow distribution, and their performance directly affects the energy efficiency and stability of the system. Existing air distributors have problems such as uneven air volume distribution, low adjustment accuracy, and inconvenient operation. Especially in scenarios requiring multi-channel independent adjustment, existing air distributors are difficult to meet complex ventilation needs, resulting in energy waste or insufficient local ventilation. In addition, existing air distributors are easily affected by airflow impact during operation, resulting in positional displacement of adjustment components, poor long-term stability, and increased maintenance costs. Therefore, the present invention provides a volute-type high-efficiency split air distributor. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides a volute-type high-efficiency split air distributor, which overcomes the problem that the scenario of being unable to meet multi-channel independent adjustment leads to energy waste or insufficient local ventilation, and is susceptible to air flow impact during operation, resulting in position displacement of the adjustment components.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a volute-type high-efficiency splitter air distributor, comprising a volute, a centrifugal impeller rotatably installed in the volute, an air outlet square tube provided at the air outlet position of the volute, three splitter baffles evenly and fixedly provided on the air outlet square tube, the three splitter baffles evenly divide the air outlet square tube into four air outlet channels, a flow limiting component and a flow expansion component are provided on the inner side of the air outlet square tube, the flow limiting component comprises four flow limiting turntables movably provided on the air outlet square tube, the flow limiting turntables are respectively used to limit the flow of the corresponding air outlet channels, the flow expansion component comprises three flow expansion turntables movably provided on the air outlet square tube, the flow expansion turntable is used to adjust the flow of the required air outlet channels, a self-locking unit is provided between the flow limiting turntable and the flow expansion turntable and the air outlet square tube, the self-locking unit is respectively used to limit the positions of the flow limiting turntable and the flow expansion turntable, and a positioning unit is also symmetrically provided on the air outlet square tube, the positioning unit is respectively used to adjust the positions of the flow limiting turntable and the flow expansion turntable.

[0005] Furthermore, an air inlet pipe is fixedly provided on the volute, and the axis of the air inlet pipe and the centrifugal impeller are in the same straight line. The air outlet square pipe is fixedly installed on the air outlet of the volute, and protective bin cover 1 and protective bin cover 2 are fixedly installed on both sides of the air outlet square pipe respectively. Protective bin cover 1 and protective bin cover 2 are used to protect the components on the air outlet square pipe.

[0006] Furthermore, the flow limiting component includes four transmission shafts 1 that are evenly rotatably installed on the air outlet square tube, the flow limiting turntables are fixedly connected to the corresponding transmission shafts 1, and the flow limiting turntables are respectively located inside the corresponding air outlet channels. The flow expansion component includes three transmission shafts 2 that are evenly rotatably installed on the air outlet square tube, the flow expansion turntables are respectively fixedly connected to the corresponding transmission shafts 2, and the transmission shafts 2 are arranged at the end position of the corresponding diversion baffle closest to the volute air outlet.

[0007] Furthermore, the self-locking units include a positioning slide slidably mounted on the air outlet square tube, a U-shaped slide is slidably mounted on the positioning slide, a limiting ratchet bar 1 and a limiting ratchet bar 2 are fixedly provided on the U-shaped slide, and a limiting ratchet wheel 2 and a limiting ratchet wheel 1 are fixedly mounted on the transmission shaft 1 and the transmission shaft 2, and when the limiting ratchet wheel 2 and the corresponding limiting ratchet bar 2 are engaged, a ratchet mechanism is formed, and when the limiting ratchet wheel 1 and the corresponding limiting ratchet bar 1 are engaged, a ratchet mechanism is formed.

[0008] Furthermore, the ratchet teeth of the limiting ratchet bar 1 and the limiting ratchet bar 2 face opposite directions, the ratchet teeth of the limiting ratchet wheel 2 and the limiting ratchet wheel 1 rotate in opposite directions, a spring is provided between the adjusting slide and the air outlet square tube, and a spring is provided between the adjusting slide and the U-shaped slide.

[0009] Furthermore, the positioning units all include positioning slides, on which transmission gears and linkage gears are rotatably mounted, and positioning gears are fixedly mounted on transmission shaft one and transmission shaft two, and when the transmission gear and the positioning gear are engaged, they form a gear pair, and the positioning slides are all fixedly provided with limiting racks, and when the linkage gear and the limiting rack are engaged, they form a gear rack pair.

[0010] Furthermore, the positioning units also include a switching slide and a switching screw rod. The switching slides are slidably installed on the air outlet square tube, and the switching screw rods are rotatably installed on the air outlet square tube. The switching slides and the corresponding switching screw rods constitute a spiral pair, and the positioning slides are slidably installed on the corresponding switching slides.

[0011] Furthermore, a feed slide is slidably installed on the switching slide, a feed screw is rotatably installed on the switching slide, the feed screw and the feed slide form a spiral pair, a spring is fixed between the feed slide and the adjustment slide, and a limit block is fixed on the switching slide, which is used to limit the position of the adjustment slide.

[0012] Furthermore, the feed slide is symmetrically fixed with pressing square rods, and the two pressing square rods on the same feed slide are used to push the U-shaped slide to be adjusted to move.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention evenly divides the square air outlet tube into four air outlet channels by setting three diversion partitions, and is equipped with a flow limiting plate and a flow expanding plate, which can accurately adjust the air volume of each channel, achieve efficient diversion, and meet different ventilation needs. (2) The present invention can lock the position of the flow limiting plate and the flow expanding plate by setting a self-locking unit to prevent position displacement caused by air flow impact during operation, thereby ensuring long-term stable operation of the equipment. (3) The present invention can achieve remote adjustment of the flow limiting plate and the flow expanding plate by setting a positioning unit, which is easy to operate and can quickly adjust the air volume distribution according to actual needs, thereby improving the convenience of use. (4) The present invention not only optimizes the air flow path by setting a volute, an air outlet square tube, and a protective compartment cover, but also protects the internal transmission components, reduces damage to the equipment caused by the external environment, and extends the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a structural schematic diagram of the centrifugal impeller of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure inside the square air outlet tube of the present invention.

[0017] Figure 4 It is a top view of the internal structure of the square air outlet tube of the present invention.

[0018] Figure 5 It is a structural schematic diagram of the position adjustment slide of the present invention.

[0019] Figure 6 Schematic diagram of the structure of the limiting unit of the present invention.

[0020] Figure 7 for Figure 6 A local enlarged schematic diagram of point A in the middle.

[0021] Figure 8 Schematic diagram of the structure of the position adjustment unit of the present invention.

[0022] Figure 9 for Figure 8 A partial enlarged schematic diagram of point B in the middle.

[0023] Figure 10 This is a schematic structural diagram of the switching slide of the present invention.

[0024] Figure 11 This is a front view of the square air outlet pipe structure of the present invention.

[0025] Reference numerals: 101-volute; 102-drive motor; 103-air inlet pipe; 104-square air outlet pipe; 105-protection compartment cover 1; 106-protection compartment cover 2; 107-flow dividing plate; 108-centrifugal impeller; 109-flow limiting plate; 110-flow expanding plate; 111-switching slide; 112-switching screw rod; 113-switching motor; 114-feeding slide; 115-positioning slide; 116-U-shaped slide; 117- Adjusting gear; 118-limiting rack; 119-transmission shaft 1; 120-transmission shaft 2; 121-adjusting slide; 122-limiting ratchet 1; 123-limiting ratchet 2; 124-limiting ratchet 2; 125-limiting ratchet 1; 126-feed motor; 127-feed screw; 128-adjusting motor; 129-transmission gear; 130-linking gear; 131-limiting motor; 132-pressing square rod; 133-limiting block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0027] Example: Reference Figures 1-11 A volute-type high-efficiency split-flow air distributor comprises a volute 101, in which a centrifugal impeller 108 is rotatably installed, an air inlet pipe 103 is fixedly provided on the volute 101, and the axes of the air inlet pipe 103 and the centrifugal impeller 108 are in the same straight line, a driving motor 102 is fixedly installed on the volute 101, and the output shaft of the driving motor 102 is fixedly connected to the centrifugal impeller 108, and an air outlet square pipe 104 is provided at the air outlet position of the volute 101, and the air outlet square pipe 104 is fixedly installed on the air outlet of the volute 101. By starting the driving motor 102 to drive the centrifugal impeller 108 to rotate, under the action of the centrifugal impeller 108, air enters the interior of the volute 101 from the air inlet pipe 103, and then is discharged from the air outlet of the volute 101 through the air outlet square pipe 104.

[0028] The air outlet square tube 104 is evenly fixed with three diverter baffles 107, which divide the air outlet square tube 104 into four air outlet channels. A flow limiting component and a flow expansion component are set on the inner side of the air outlet square tube 104. The flow limiting component includes four flow limiting rotating plates 109 movably arranged on the air outlet square tube 104. The flow limiting rotating plates 109 are respectively used to limit the flow of the corresponding air outlet channels. The flow limiting component also includes four transmission shafts 119 evenly rotatably mounted on the air outlet square tube 104. The flow limiting rotating plates 109 are respectively connected to the corresponding The transmission shaft 119 is fixedly connected, and the flow limiting turntables 109 are respectively located inside the corresponding air outlet channels. The flow expansion component includes three flow expansion turntables 110 movably arranged on the air outlet square tube 104. The flow expansion turntables 110 are used to adjust the flow rate of the required air outlet channel. The flow expansion component includes three transmission shafts 120 120 that are evenly rotatably installed on the air outlet square tube 104. The flow expansion turntables 110 are respectively fixedly connected to the corresponding transmission shafts 120. The transmission shafts 120 are arranged at the end position of the corresponding diversion partition 107 closest to the air outlet of the volute 101.

[0029] In the initial position, the flow limiting turntable 109 and the diverter baffle 107 are oriented in the same direction. At this time, the side of the flow limiting turntable 109 is in contact with the diverter baffle 107 or the inner wall of the air outlet square tube 104. At this time, each air outlet channel is in an open state, and the two sides of the flow expansion turntable 110 are also parallel to the corresponding diverter baffle 107. At this time, the end of the flow expansion turntable 110 farthest from the diverter baffle 107 is located at the position farthest from the diverter baffle 107. At this time, under the action of the four flow expansion turntables 110, the flow rates of the four air outlet channels are the same.

[0030] Drive the drive shaft 119 corresponding to a certain flow limiting rotary plate 109 to rotate, that is, adjust the distance between the end of the flow limiting rotary plate 109 farthest from the drive shaft 119 and the corresponding diverter baffle 107 or the inner wall of the air outlet square tube 104, so as to adjust the air output of the air outlet channel. When the flow limiting rotary plate 109 rotates to contact the diverter baffle 107 or the inner wall of the air outlet square tube 104 on the other side, the ventilation duct where the flow limiting rotary plate 109 is located is in a closed state.

[0031] When it is necessary to increase the flow rate of a certain air outlet channel, when the air outlet channel is located on both sides of the air outlet square tube 104, by driving the transmission shaft 2 120 corresponding to the air outlet channel to rotate, the corresponding flow expansion plate 110 is rotated, thereby adjusting the angle between the flow expansion plate 110 and the corresponding diversion baffle 107, thereby increasing the air inlet size of the air outlet channel, and then increasing the air outlet volume of the air outlet channel. When the air outlet channel is located on the inner side of the air outlet square tube 104, by driving the transmission shaft 2 120 on both sides of the air outlet channel to rotate, the corresponding two flow expansion plates 110 are rotated, thereby adjusting the angle between the two flow expansion plates 110 relative to the corresponding diversion baffle 107, thereby increasing the air outlet volume of the air outlet channel.

[0032] A self-locking unit is provided between the flow limiting plate 109 and the flow expanding plate 110 and the air outlet square tube 104. The self-locking unit is used to limit the position of the flow limiting plate 109 and the flow expanding plate 110 respectively. The self-locking unit includes a position adjustment slide 121 slidably mounted on the air outlet square tube 104. A spring is provided between the position adjustment slide 121 and the air outlet square tube 104. A limit ratchet 2 124 and a limit ratchet 1 125 are fixedly installed on the transmission shaft 119 and the transmission shaft 2 120. The limit ratchet 2 124 and the limit ratchet 1 1 The ratchet rotation direction of 25 is opposite, a U-shaped slide 116 is slidably installed on the adjusting slide 121, a spring is provided between the adjusting slide 121 and the U-shaped slide 116, a limiting ratchet 122 and a limiting ratchet 2 123 are fixedly provided on the U-shaped slide 116, the ratchet directions of the limiting ratchet 1 122 and the limiting ratchet 2 123 are opposite, the limiting ratchet 2 124 and the corresponding limiting ratchet 2 123 are engaged to form a ratchet mechanism, and the limiting ratchet 1 125 and the corresponding limiting ratchet 1 122 are engaged to form a ratchet mechanism.

[0033] In the initial position, the springs between the positioning slide 121 and the air outlet square tube 104 and the springs between the U-shaped slide 116 and the positioning slide 121 are not compressed. At this time, the positioning slide 121 is located at the position closest to the axis of the corresponding limiting ratchet 2 124, and the U-shaped slide 116 is located at the position farthest from the surface of the air outlet square tube 104. The limiting ratchet 1 122 and the corresponding limiting ratchet 1 125 are engaged, and the limiting ratchet 2 123 and the corresponding limiting ratchet 2 124 are engaged. At this time, under the action of the limiting ratchet 1 122, the limiting ratchet 2 123, the limiting ratchet 2 124, and the limiting ratchet 1 125, the corresponding transmission shaft 1 119 or the transmission shaft 2 120 cannot rotate freely.

[0034] When it is necessary to drive the transmission shaft 119 or the transmission shaft 2 120 to rotate, the U-shaped slide 116 is first pushed downward, the spring between the U-shaped slide 116 and the adjustment slide 121 is compressed, and the limiting ratchet 1 122 and the limiting ratchet 2 123 on the U-shaped slide 116 move downward synchronously, and finally the limiting ratchet 122 and the limiting ratchet 1 125 are disengaged, and the limiting ratchet 2 123 and the limiting ratchet 2 124 are disengaged. At this time, the transmission shaft 119 or the transmission shaft 2 120 can freely rotate. Rotation makes it easier to adjust the position of the flow limiting turn plate 109 or the flow expanding turn plate 110 later, and then moves the adjustment slide 121 in the direction away from the axis of the limiting ratchet 2 124. The spring between the adjustment slide 121 and the air outlet square tube 104 is compressed, and finally the adjustment slide 121 moves to the position farthest from the corresponding axis of the limiting ratchet 2 124. At this time, the limiting ratchet 1 122 and the limiting ratchet 2 123 are both located outside the limiting ratchet 2 124 and the limiting ratchet 1 125.

[0035] After completing the position adjustment of transmission shaft 119 or transmission shaft 2 120, the pressure on the U-shaped slide 116 is first released. Under the action of the spring between the U-shaped slide 116 and the adjustment slide 121, the U-shaped slide 116 returns to its initial position. At this time, the upper and lower surfaces of the limiting ratchet 2 123 are parallel to the upper and lower surfaces of the corresponding limiting ratchet 2 124, and the upper and lower surfaces of the limiting ratchet 122 are parallel to the upper and lower surfaces of the corresponding limiting ratchet 125. Then, the adjustment slide 121 is moved in the direction close to the axis of the corresponding limiting ratchet 2 124. At this time, the limiting ratchet 122 moves relative to the limiting ratchet 125 and re-engages with the limiting ratchet 125, and the limiting ratchet 2 123 moves relative to the limiting ratchet 2 124 and re-engages with the limiting ratchet 2 124, that is, the limiting ratchet 122 and the limiting ratchet 2 123 re-lock the corresponding transmission shaft 119 or transmission shaft 2 120 position.

[0036] The square air outlet pipe 104 is also symmetrically provided with a positioning unit, which is used to adjust the positions of the flow limiting turntable 109 and the flow expanding turntable 110 respectively. The positioning units include a positioning slide 115, on which a transmission gear 129 and a linkage gear 130 are rotatably installed. A positioning motor 128 and a limit motor 131 are fixedly installed on the positioning slide 115. The output shaft of the positioning motor 128 is fixedly connected to the transmission gear 129, and the output shaft of the limit motor 131 is fixedly connected to the linkage gear 130. A positioning gear 117 is fixedly installed on the transmission shaft 119 and the transmission shaft 2 120. When the transmission gear 129 and the positioning gear 117 are engaged, a gear pair is formed. A limiting rack 118 is fixedly provided on the positioning slide 121. When the linkage gear 130 and the limiting rack 118 are engaged, a gear rack pair is formed.

[0037] The positioning units also include a switching slide 111, a switching slide 111, and a switching motor 113. The switching slides 111 are all slidably installed on the air outlet square tube 104, and the switching screw rods 112 are all rotatably installed on the air outlet square tube 104. The switching slides 111 and the corresponding switching screw rods 112 constitute a spiral pair. The switching motors 113 are all fixedly installed on the air outlet square tube 104. The output shaft of the switching motor 113 is fixedly connected to the corresponding switching screw rod 112, and the positioning slide 115 is slidably installed on the corresponding switching slide 111.

[0038] A feed slide 114 is also slidably installed on the switching slide 111, and a feed screw 127 is rotatably installed on the switching slide 111. The feed screw 127 and the feed slide 114 constitute a spiral pair. A feed motor 126 is also fixedly installed on the switching slide 111, and the output shaft of the feed motor 126 is fixedly connected to the feed screw 127. A spring is fixedly arranged between the feed slide 114 and the adjustment slide 115. A limit block 133 is also fixedly arranged on the switching slide 111. The limit block 133 is used to limit the position of the adjustment slide 115. A pressing square rod 132 is symmetrically fixed on the feed slide 114. The two pressing square rods 132 on the same feed slide 114 are used to push the U-shaped slide 116 to be adjusted to move.

[0039] In the initial position, the feed slide 114 is located at the farthest position from the corresponding feed motor 126. At this time, the spring between the adjustment slide 115 and the feed slide 114 is not compressed, and the adjustment slide 115 is located at the farthest position from the corresponding limit block 133.

[0040] Start the switching motor 113 to drive the switching screw 112 to rotate, so that the switching slide 111 moves to the side of the adjustment gear 117 of the flow limiting plate 109 or the flow expanding plate 110 to be adjusted, and then start the adjustment motor 128 to drive the transmission gear 129 to rotate, adjust the position of the transmission gear 129, and then start the feed motor 126 to drive the feed screw 127 to rotate, that is, to make the feed slide 114 move downward, under the action of the spring between the feed slide 114 and the adjustment slide 115, the adjustment The positioning slide 115 moves downward synchronously, and finally the positioning slide 115 moves to contact the corresponding limit block 133. At this time, the transmission gear 129 and the positioning gear 117 corresponding to the flow limiting turn plate 109 or the flow expanding turn plate 110 are engaged, and the linkage gear 130 and the limiting rack 118 corresponding to the flow limiting turn plate 109 or the flow expanding turn plate 110 are engaged, and at this time, the two pressing square rods 132 respectively contact the two sides of the U-shaped slide 116 corresponding to the flow limiting turn plate 109 or the flow expanding turn plate 110.

[0041] Under the action of the limit block 133, the adjustment slide 115 cannot move further downward, the feed slide 114 continues to move downward, the spring between the feed slide 114 and the adjustment slide 115 is compressed, the feed slide 114 moves downward relative to the adjustment slide 115, and the two pressing square rods 132 on the feed slide 114 move downward synchronously. Under the action of the two pressing square rods 132, the U-shaped slide 116 corresponding to the flow limiting plate 109 or the flow expanding plate 110 moves downward synchronously, that is, the flow limiting plate 109 or the flow expanding plate 110 moves downward synchronously. The first and second limiting ratchet bars 122 and 123 release the lock of the flow limiting plate 109 or the flow expanding plate 110, and then the limiting motor 131 is started to drive the linkage gear 130 to rotate, so that the corresponding limiting rack 118 moves in the direction away from the axis of the corresponding limiting ratchet wheel 124, that is, the limiting ratchet bar 122 and the limiting ratchet bar 123 move to the position farthest from the corresponding adjusting gear 117, and then the adjusting motor 128 is started to drive the transmission gear 129 to rotate, so that the limiting rack 118 moves in the direction away from the axis of the corresponding limiting ratchet wheel 124, so that ... rack 118 moves in the direction away from the axis of the corresponding limiting ratchet wheel 124, The corresponding adjustment gear 117 rotates to adjust the position of the flow limiting plate 109 or the flow expanding plate 110. After the position adjustment of the flow limiting plate 109 or the flow expanding plate 110 is completed, the spring between the feed slide 114 and the adjustment slide 115 is fully restored. At this time, the spring between the adjustment slide 121 and the U-shaped slide 116 is fully restored. The limit motor 131 is started to make the adjustment slide 121 return to the initial position. At this time, the limit ratchet 122 and the limit ratchet 2 are in the same position. 123 is re-engaged with the limiting ratchet 2 124 and the limiting ratchet 1 125, that is, the position of the flow limiting turn plate 109 or the flow expansion turn plate 110 is locked again, and then the feed slide 114 is moved upward. At this time, the adjustment slide 115 moves upward synchronously, that is, the transmission gear 129 is disengaged and engaged with the adjustment gear 117, and the linkage gear 130 is disengaged and engaged with the limiting rack 118. Repeat the above steps to achieve individual adjustment of the position of each flow limiting turn plate 109 and the flow expansion turn plate 110.

[0042] A protection compartment cover 105 and a protection compartment cover 2 106 are fixedly installed on both sides of the air outlet square tube 104 , respectively. The protection compartment cover 105 and the protection compartment cover 2 106 are used to protect the components on the air outlet square tube 104 .

[0043] Working principle: According to the ventilation requirements, the control positioning unit first releases the lock of the flow limiting turn plate 109 or the flow expansion turn plate 110 to be adjusted by the limiting unit, and then adjusts the position of the flow limiting turn plate 109 or the flow expansion turn plate 110 through the positioning unit. After completing the adjustment of the position of the positioning unit, the limiting unit re-locks the position of the flow limiting turn plate 109 or the flow expansion turn plate 110, thereby preventing the flow limiting turn plate 109 and the flow expansion turn plate 110 from shifting in position during operation, thereby improving the stability of the equipment.

[0044] After completing the position adjustment of the flow limiting component and the flow expansion component, start the drive motor 102 to drive the centrifugal impeller 108 to rotate, so that the air enters the volute 101, and is discharged along the air outlet of the volute 101 through the various air outlet channels on the air outlet square tube 104. By connecting with the various air outlet channels of the air outlet square tube 104, the diversion effect is achieved.

[0045] The present invention is not limited to the above-mentioned specific embodiments. Various modifications made by technicians in the relevant technical field based on the above-mentioned conception without creative work are all within the scope of protection of the present invention.

Claims

1. A volute-type high-efficiency split-flow air distributor, comprising a volute (101), wherein a centrifugal impeller (108) is rotatably mounted in the volute (101), characterized in that: An air outlet square tube (104) is provided at the air outlet position of the volute (101), and three diversion baffles (107) are evenly fixedly provided on the air outlet square tube (104). The three diversion baffles (107) evenly divide the air outlet square tube (104) into four air outlet channels. A flow limiting component and a flow expansion component are provided on the inner side of the air outlet square tube (104). The flow limiting component includes four flow limiting rotating plates (109) movably provided on the air outlet square tube (104). The flow limiting rotating plates (109) are respectively used to limit the flow of the corresponding air outlet channels. The flow expansion component The invention comprises three flow expansion plates (110) movably arranged on the air outlet square tube (104), the flow expansion plates (110) being used to adjust the flow of the required air outlet channel, the flow limiting plates (109) and the flow expansion plates (110) being provided with self-locking units between the air outlet square tube (104), the self-locking units being used to limit the positions of the flow limiting plates (109) and the flow expansion plates (110), respectively, and the air outlet square tube (104) being further symmetrically provided with position adjustment units, the position adjustment units being used to adjust the positions of the flow limiting plates (109) and the flow expansion plates (110), respectively.

2. A volute-type high-efficiency split-flow air distributor according to claim 1, characterized in that: An air inlet pipe (103) is fixedly provided on the volute (101), and the axes of the air inlet pipe (103) and the centrifugal impeller (108) are on the same straight line. The air outlet square pipe (104) is fixedly installed on the air outlet of the volute (101), and a protective bin cover 1 (105) and a protective bin cover 2 (106) are fixedly installed on both sides of the air outlet square pipe (104), respectively. The protective bin cover 1 (105) and the protective bin cover 2 (106) are used to protect the components on the air outlet square pipe (104).

3. A volute-type high-efficiency split-flow air distributor according to claim 2, characterized in that: The flow limiting component includes four transmission shafts (119) uniformly rotatably mounted on the air outlet square tube (104), the flow limiting rotating plates (109) are fixedly connected to the corresponding transmission shafts (119), and the flow limiting rotating plates (109) are respectively located inside the corresponding air outlet channels. The flow expansion component includes three transmission shafts (120) uniformly rotatably mounted on the air outlet square tube (104), the flow expansion rotating plates (110) are respectively fixedly connected to the corresponding transmission shafts (120), and the transmission shafts (120) are arranged at the end position of the corresponding diversion baffle (107) closest to the air outlet of the volute (101).

4. A volute-type high-efficiency split-flow air distributor according to claim 3, characterized in that: The self-locking units each include a positioning slide (121) slidably mounted on the air outlet square tube (104), a U-shaped slide (116) slidably mounted on the positioning slide (121), a limiting ratchet bar 1 (122) and a limiting ratchet bar 2 (123) fixedly arranged on the U-shaped slide (116), a limiting ratchet wheel 2 (124) and a limiting ratchet wheel 1 (125) fixedly mounted on both the transmission shaft 1 (119) and the transmission shaft 2 (120), the limiting ratchet wheel 2 (124) and the corresponding limiting ratchet wheel 2 (123) forming a ratchet mechanism when engaged, and the limiting ratchet wheel 1 (125) and the corresponding limiting ratchet wheel 1 (122) forming a ratchet mechanism when engaged.

5. The volute-type high-efficiency split-flow air distributor according to claim 4, characterized in that: The ratchet teeth of the position-limiting ratchet bar 1 (122) and the position-limiting ratchet bar 2 (123) are oriented in opposite directions, the ratchet teeth of the position-limiting ratchet wheel 2 (124) and the position-limiting ratchet wheel 1 (125) are rotated in opposite directions, a spring is provided between the position-adjusting slide seat (121) and the air outlet square tube (104), and a spring is provided between the position-adjusting slide seat (121) and the U-shaped slide plate (116).

6. A volute-type high-efficiency split-flow air distributor according to claim 5, characterized in that: The positioning units each include a positioning slide (115), a transmission gear (129) and a linkage gear (130) are rotatably mounted on the positioning slide (115), a positioning gear (117) is fixedly mounted on the transmission shaft 1 (119) and the transmission shaft 2 (120), and when the transmission gear (129) and the positioning gear (117) are engaged, a gear pair is formed; and a limiting rack (118) is fixedly provided on the positioning slide (121), and when the linkage gear (130) and the limiting rack (118) are engaged, a gear rack pair is formed.

7. A volute-type high-efficiency split-flow air distributor according to claim 6, characterized in that: The position adjustment units also include a switching slide (111) and a switching screw (112); the switching slide (111) is slidably mounted on the air outlet square tube (104); the switching screw (112) is rotatably mounted on the air outlet square tube (104); the switching slide (111) and the corresponding switching screw (112) form a spiral pair; and the position adjustment slide (115) is slidably mounted on the corresponding switching slide (111).

8. The volute-type high-efficiency split-flow air distributor according to claim 7, characterized in that: A feed slide (114) is also slidably mounted on the switching slide (111), a feed screw (127) is rotatably mounted on the switching slide (111), the feed screw (127) and the feed slide (114) form a spiral pair, a spring is fixedly arranged between the feed slide (114) and the adjustment slide (115), and a limit block (133) is also fixedly arranged on the switching slide (111), and the limit block (133) is used to limit the position of the adjustment slide (115).

9. The volute-type high-efficiency split-flow air distributor according to claim 8, characterized in that: The feed slide (114) is symmetrically fixed with pressing square rods (132), and the two pressing square rods (132) on the same feed slide (114) are used to push the U-shaped slide (116) to be adjusted to move.

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