Horn mouth ventilation equipment and manufacturing process thereof

Abstract

The invention provides bell mouth ventilation equipment and a manufacturing process thereof, and relates to the technical field of bell mouth ventilation equipment.The bell mouth ventilation equipment comprises a bell mouth pipe, an adjusting mechanism is fixedly installed at one end of the bell mouth pipe, the adjusting mechanism comprises a shell, a plurality of rotating holes are formed in the outer surface of the shell, and first rotating rods are rotationally connected to the inner walls of the rotating holes; and a groove is formed in one end of the first rotating rod, and a baffle is fixedly connected to the inner wall of the groove. According to the device, gears and a gear ring are matched with each other, and the gears are controlled to rotate through the gear ring, so that the gears can rotate at the same time, a plurality of baffles can rotate at the same frequency, the rotation angles are the same, the baffles can be adjusted conveniently, and the structural linkage of the device is improved; the structural stability of the first rotating rod is improved, and the rotating ring, the first fixing ring, the second fixing ring and the gear ring are matched, so that the structure of the gear ring is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of bell-mouth ventilation equipment, and in particular to a bell-mouth ventilation equipment and a manufacturing process thereof. Background Art

[0002] Ventilation equipment plays a vital role in buildings and industrial applications. Its main function is to ensure air circulation to maintain a comfortable indoor environment and efficient working conditions. With the development of technology and changes in application requirements, the design of ventilation equipment has also undergone many improvements to improve efficiency, stability and operational flexibility. In this context, traditional ventilation equipment design faces many challenges, especially in the control of baffles and the structural stability of the equipment. Traditional ventilation equipment usually relies on a simple rotation mechanism to adjust the position of the baffle. Although this mechanism can complete basic ventilation tasks in many cases, it often exhibits insufficient adjustment accuracy and synchronization problems in practical applications. For example, when multiple baffles need to be adjusted to the same angle at the same time, the independent rotation mechanism in the traditional design may cause inconsistent angles between the baffles, thereby affecting the overall ventilation effect and the performance of the equipment. In addition, a single rotation mechanism may also cause structural instability and component wear during long-term operation, thereby reducing the life and reliability of the equipment. In order to meet these challenges, engineers proposed a ventilation equipment design based on the cooperation of gears and gear rings. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings existing in the prior art. Ventilation equipment plays a vital role in construction and industrial applications. Its main function is to ensure air circulation to maintain a comfortable indoor environment and efficient working conditions. With the development of technology and changes in application requirements, the design of ventilation equipment has also undergone many improvements to improve efficiency, stability and operational flexibility. In this context, traditional ventilation equipment design faces many challenges, especially in the control of baffles and the structural stability of the equipment. Traditional ventilation equipment usually relies on a simple rotation mechanism to adjust the position of the baffle. Although this mechanism can complete basic ventilation tasks in many cases, it often exhibits insufficient adjustment accuracy and synchronization problems in practical applications. For example, when multiple baffles need to be adjusted to the same angle at the same time, the independent rotation mechanism in the traditional design may cause inconsistent angles between the baffles, thereby affecting the overall ventilation effect and the performance of the equipment. In addition, a single rotation mechanism may also cause structural instability and component wear during long-term operation, thereby reducing the life and reliability of the equipment.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a bell-mouth ventilation device, comprising a bell tube, one end of which is fixedly installed with an adjustment mechanism, the adjustment mechanism comprising a shell, the outer surface of the shell is provided with a plurality of rotating holes, the inner wall of the rotating hole is rotatably connected with a first rotating rod, one end of the first rotating rod is provided with a groove, the inner wall of the groove is fixedly connected with a baffle, the inner wall of the shell is fixedly connected with a fixed block, the outer surface of the first rotating rod is fixedly sleeved with a gear, one end of the first rotating rod is fixedly connected with a support rod, one end of the support rod is rotatably embedded in the interior of the fixed block, the inner wall of the shell is provided with a rotating groove, the inner wall of the rotating groove is rotatably connected with a rotating ring, the inner wall of the rotating ring is fixedly connected with a first fixing ring, the inner wall of the first fixing ring is fixedly connected with a gear ring, the inner wall of the gear ring is fixedly connected with a second fixing ring, a cover plate is fixedly connected between the first fixing ring, the second fixing ring and the top of the gear ring, the gear ring is meshed with the gear, and a fixing mechanism is arranged inside the fixed block.

[0005] As a preferred embodiment, the adjustment mechanism also includes a connecting ring fixed to one end of the horn tube, and a plurality of second rotating rods are rotatably connected inside the connecting ring. The second rotating rods are provided with fixing grooves adapted to the grooves, and the inner walls of the fixing grooves are fixedly connected to the outer surface of the baffle.

[0006] As a preferred embodiment, one side of the horn tube is fixedly connected to a connecting shell, a plurality of support plates are fixedly connected to the inner wall of the connecting shell, an arc rod is fixedly connected between the outer surfaces of each pair of the support plates, a motor is fixedly installed between one side of the plurality of support plates, and a fan is fixedly connected to the output end of the motor.

[0007] As a preferred embodiment, the adjustment mechanism includes a rotating groove opened on one side of the fixed block, the inner wall of the rotating groove is rotatably connected with a rotating plate, a rotating hole is opened on one side of the rotating plate, and one end of the rotating hole is fixedly penetrated to the outside of the shell.

[0008] As a preferred embodiment, the inner wall of the rotating hole is rotatably connected to a shaft rod, the outer surface of the shaft rod is slidably connected to the inner wall of the rotating plate, one end of the shaft rod is fixedly connected to a slide plate, and the outer surface of the slide plate is slidably connected to the inner wall of the rotating groove.

[0009] As a preferred embodiment, a spring is provided on the outer surface of the shaft rod, one end of the spring is fixedly connected to one side of the slide plate, and the other end of the spring is fixedly connected to one side of the rotating plate.

[0010] As a preferred embodiment, the other end of the shaft is fixedly connected to a blocking plate, and one side of the blocking plate is provided with a slot adapted to one side of the housing.

[0011] As a preferred embodiment, the fixing mechanism also includes a sliding hole opened on one side of the cover plate, the inner wall of the sliding hole is slidably connected to the outer surface of the slide plate, the inner wall of the sliding hole is slidably connected to a connecting rod, one end of the connecting rod is fixedly connected to one side of the slide plate, and the other end of the connecting rod is fixedly connected to a pressure plate.

[0012] A manufacturing process of a bell-mouth ventilation device comprises the following steps: 1) Place the sheet on the workbench of the spinning machine, ensure that there is an appropriate gap between the sheet and the rotating mold of the spinning machine, start the spinning machine, rotate the rotating mold at a predetermined speed, and adjust the inner rotation function of the spinning machine to ensure uniform spinning of the sheet, gradually increase the pressure of the rotating mold, so that the sheet is evenly pressed during the rotation process to achieve the required sheet thickness and shape, obtain the trumpet tube and the connecting shell, and stop the rotation of the spinning machine; 2) Use high-pressure water cutting to cut the connection shell to obtain a through hole that matches the horn tube, and make the horn tube and the through hole of the connection shell connected and fixed by welding; 3) Make the parts housing, the first rotating rod, the fixing block, the gear, the support rod, the rotating ring, the fixing mechanism, the first fixing ring, the gear ring, the second fixing ring, the cover plate, the baffle plate, the second rotating rod, the connecting ring, the rotating plate, the rotating hole, the shaft rod, the slide plate, the spring, the blocking plate, the connecting rod, the pressure plate, the connecting shell, the support plate and the arc rod by cutting, stamping and other methods, and obtain the motor; 4) Fix the spring to the slide plate, and fix the other end of the spring to one side of the rotating plate, then fix the slide plate with one side of the spring to one end of the shaft rod, the rotating plate and the shaft rod are in a sliding state, and the inner wall of the rotating groove opened by the fixed block is provided with a bearing, and the inner ring of the bearing is fixed to the inner wall of the rotating groove, and the outer wall of the bearing is fixed to one side of the rotating plate, the inner wall of the bearing is matched with the rotating hole, and the shaft rod passes through the bearing, the rotating hole and the blocking plate to be fixed; 5) The fixing block is fixed inside the housing, and a support rod is rotatably embedded on the outer surface of the fixing block, and the position of the support rod is aligned with the center position of the rotating hole starting from the outside of the housing, and then the gear is placed outside the support rod, and then the first rotating rod is contacted with the support rod from the inside of the rotating hole, and the gear is sleeved on the outer surface of the first rotating rod by fixing glue, and the first rotating rod and the gear are fixed by welding; 6) Rotate and fix the rotating ring inside the rotating groove inside the housing, and at the same time clamp the first fixing ring and the second fixing ring to fix the gear ring, and fix the first fixing ring and the rotating ring; 7) Then fix the cover plate to the first fixing ring, the second fixing ring and the gear ring, and align the sliding hole opened in the cover plate with the slide plate, then fix the connecting rod to the slide plate, and then fix the pressing plate to the connecting rod, wherein the sliding hole is a circular convex shape, and the connecting rod is adapted to the sliding hole and is a circular convex shape; 8) Fix the baffle to the groove of the first rotating rod, then make all the baffles perpendicular to the shell, rotate the second rotating rod equidistantly and fix it inside the connecting ring, and make the direction of the fixing groove of the second rotating rod the same as the groove of the first rotating rod, then control the connecting ring to drive the fixing groove on the second rotating rod to contact the baffle, and stop fixing when the second rotating rod is located at the center of the baffle, and fix the connecting ring to the port of the horn tube; 9) Assemble the four support plates and the arc rod, and fix the motor at the center of the four support plates. Then fix the support plates to the inner wall of the connecting shell to complete the assembly.

[0013] Compared with the prior art, the advantages and positive effects of the present invention are: 1. In the present invention, the gears and the gear ring cooperate with each other, and the gear ring controls the rotation of multiple gears, so that the multiple gears can rotate at the same time, and the multiple baffles can rotate at the same frequency and with the same rotation angle, which is convenient for baffle adjustment and increases the structural linkage of the equipment. The support rod is used to support the first rotating rod and increase the structural stability of the first rotating rod. The rotating ring, the first fixed ring, the second fixed ring and the gear ring cooperate to make the structure of the gear ring more stable.

[0014] 2. In the present invention, after the pressure plate is released, the pressure plate will drive the slide plate to move under the action of the spring, and the movement of the slide plate will drive the shaft rod to move, and the movement of the shaft rod will drive the baffle plate to be tightly attached to the outer surface of the shell, thereby forming a damping force to limit the cover plate, so that after the baffle plate is adjusted and rotated, it will not rotate easily, and the friction loss of the spring when the slide plate rotates is reduced by the rotating plate, and the spring can give the slide plate a force away from the baffle plate, and then the spring can drive the shaft rod to make the baffle plate tightly attached to the shell, so that the rotation of the shaft rod has a strong damping force, and at the same time, the shape of the connecting rod and the sliding hole is limited, so that the damping force can be applied to the top of the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of the structure of a bell-shaped ventilation device and a manufacturing process thereof are provided for the present invention; Figure 2 A side structural stereogram of a bell-mouth ventilation device and a manufacturing process thereof are provided for the present invention; Figure 3 A three-dimensional diagram of the exploded structure of a bell-mouth ventilation device and a manufacturing process thereof are provided for the present invention; Figure 4 A three-dimensional diagram of the structure of the regulating mechanism in a bell-shaped ventilation device and a manufacturing process thereof are provided for the present invention; Figure 5A three-dimensional exploded structure diagram of the cover plate position at the adjustment mechanism in the bell-shaped ventilation device, which proposes a bell-shaped ventilation device and a manufacturing process thereof; Figure 6 The present invention provides a bell-mouth ventilation device and a manufacturing process thereof, and shows a three-dimensional diagram of an exploded structure of an adjustment mechanism in the bell-mouth ventilation device.

[0016] Legend: 1. Speaker tube; 2. Adjustment mechanism; 3. Connecting shell; 4. Support plate; 5. Arc rod; 6. Motor; 7. Fan; 21. housing; 22. first rotating rod; 23. groove; 24. fixing block; 25. gear; 26. support rod; 27. rotating groove; 28. rotating ring; 29. ​​fixing mechanism; 210. first fixing ring; 211. gear ring; 212. second fixing ring; 213. cover plate; 214. baffle plate; 215. second rotating rod; 216. connecting ring; 291. Rotating groove; 292. Rotating plate; 293. Rotating hole; 294. Axle rod; 295. Slide plate; 296. Spring; 297. Stop plate; 298. Connecting rod; 299. Pressing plate. 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. Example

[0018] like Figure 1-6As shown, the present invention provides a technical solution: a bell-mouth ventilation device, comprising a bell tube 1, one end of the bell tube 1 is fixedly installed with an adjustment mechanism 2, the adjustment mechanism 2 comprises a shell 21, the outer surface of the shell 21 is provided with a plurality of rotating holes, the inner wall of the rotating hole is rotatably connected with a first rotating rod 22, one end of the first rotating rod 22 is provided with a groove 23, the inner wall of the groove 23 is fixedly connected with a baffle 214, the inner wall of the shell 21 is fixedly connected with a fixing block 24, the outer surface of the first rotating rod 22 is fixedly sleeved with a gear 25, one end of the first rotating rod 22 is fixedly connected with a support rod 26, the support rod 26 is fixedly connected with a gear 25, and the gear 25 is fixedly sleeved with a gear 25. One end of the rod 26 is rotatably embedded in the interior of the fixed block 24, a rotating groove 27 is provided on the inner wall of the housing 21, a rotating ring 28 is rotatably connected to the inner wall of the rotating groove 27, a first fixed ring 210 is fixedly connected to the inner wall of the rotating ring 28, a gear ring 211 is fixedly connected to the inner wall of the first fixed ring 210, a second fixed ring 212 is fixedly connected to the inner wall of the gear ring 211, a cover plate 213 is fixedly connected between the first fixed ring 210, the second fixed ring 212 and the top of the gear ring 211, the gear ring 211 is meshedly connected with the gear 25, and a fixing mechanism 29 is provided inside the fixed block 24; Through the above embodiment, the gear 25 and the gear ring 211 cooperate with each other, and the gear ring 211 controls the rotation of multiple gears 25, so that multiple gears 25 can rotate at the same time, and multiple baffles 214 can rotate at the same frequency and the same rotation angle, so that the baffles 214 are easy to adjust, and the structural linkage of the device is increased. The support rod 26 is used to support the first rotating rod 22, and the structural stability of the first rotating rod 22 is increased. The rotating ring 28, the first fixing ring 210, the second fixing ring 212 and the gear ring 211 cooperate, so that the structure of the gear ring 211 can be more stable. The adjustment mechanism 2 also includes a connecting ring 216 fixed to one end of the horn tube 1, and a plurality of second rotating rods 215 are rotatably connected inside the connecting ring 216. The second rotating rods 215 are provided with fixing grooves adapted to the grooves 23, and the inner wall of the fixing grooves is fixedly connected to the outer surface of the baffle 214; One side of the horn tube 1 is fixedly connected to a connection shell 3, the inner wall of the connection shell 3 is fixedly connected to a plurality of support plates 4, an arc-shaped rod 5 is fixedly connected between the outer surfaces of two support plates 4, a motor 6 is fixedly installed between one side of the plurality of support plates 4, and a fan 7 is fixedly connected to the output end of the motor 6; The adjustment mechanism 2 includes a rotation groove 291 formed on one side of the fixed block 24, a rotation plate 292 is rotatably connected to the inner wall of the rotation groove 291, a rotation hole 293 is formed on one side of the rotation plate 292, and one end of the rotation hole 293 is fixedly penetrated to the outside of the housing 21; The inner wall of the rotating hole 293 is rotatably connected with a shaft rod 294, the outer surface of the shaft rod 294 is slidably connected with the inner wall of the rotating plate 292, one end of the shaft rod 294 is fixedly connected with a slide plate 295, the outer surface of the slide plate 295 is slidably connected with the inner wall of the rotating groove 291; A spring 296 is disposed on the outer surface of the shaft 294, one end of the spring 296 is fixedly connected to one side of the slide plate 295, and the other end of the spring 296 is fixedly connected to one side of the rotating plate 292; The other end of the shaft 294 is fixedly connected to a blocking plate 297, and one side of the blocking plate 297 is provided with a slot adapted to one side of the housing 21; The fixing mechanism 29 further includes a sliding hole opened on one side of the cover plate 213, the inner wall of the sliding hole is slidably connected to the outer surface of the slide plate 295, a connecting rod 298 is slidably connected to the inner wall of the sliding hole, one end of the connecting rod 298 is fixedly connected to one side of the slide plate 295, and the other end of the connecting rod 298 is fixedly connected to the pressing plate 299; Through the above embodiment, after the pressure plate 299 is released, the pressure plate 299 will drive the slide plate 295 to move under the action of the spring 296, and the movement of the slide plate 295 drives the shaft 294 to move, and the movement of the shaft 294 drives the blocking plate 297 to be tightly attached to the outer surface of the shell 21, thereby forming a damping force to limit the cover plate 213, so that the baffle 214 will not rotate easily after the adjustment and rotation, and the friction loss of the spring 296 when the slide plate 295 rotates is reduced by the rotating plate 292, and the slide plate 295 can be given a force away from the blocking plate 297 by the spring 296, and then the shaft 294 can be driven by the spring 296 to make the blocking plate 297 tightly attached to the shell 21, so that the rotation of the shaft 294 has a strong damping force, and at the same time, the shape of the connecting rod 298 and the sliding hole is limited, so that the damping force can be applied to the cover plate 213; A manufacturing process of a bell-mouth ventilation device comprises the following steps: 1) Place the sheet on the workbench of the spinning machine, ensure that there is an appropriate gap between the sheet and the rotating mold of the spinning machine, start the spinning machine, rotate the rotating mold at a predetermined speed, and adjust the inner rotation function of the spinning machine to ensure uniform spinning of the sheet, gradually increase the pressure of the rotating mold, so that the sheet is evenly pressed during the rotation process to achieve the required sheet thickness and shape, obtain the trumpet tube 1 and the connecting shell 3, and stop the rotation of the spinning machine; 2) Cut the connection shell 3 by high-pressure water cutting to obtain a through hole that matches the horn tube 1, and connect the horn tube 1 and the through hole of the connection shell 3 by welding; 3) Manufacturing the parts housing 21, the first rotating rod 22, the fixing block 24, the gear 25, the support rod 26, the rotating ring 28, the fixing mechanism 29, the first fixing ring 210, the gear ring 211, the second fixing ring 212, the cover plate 213, the baffle plate 214, the second rotating rod 215, the connecting ring 216, the rotating plate 292, the rotating hole 293, the shaft rod 294, the slide plate 295, the spring 296, the blocking plate 297, the connecting rod 298, the pressing plate 299, the connecting shell 3, the support plate 4 and the arc rod 5 by cutting, stamping and other methods, and obtaining the motor 6; 4) Fix the spring 296 to the slide plate 295, and fix the other end of the spring 296 to one side of the rotating plate 292, then fix one side of the spring 296 of the slide plate 295 to one end of the shaft 294, the rotating plate 292 and the shaft 294 are in a sliding state, and the inner wall of the rotating groove 291 opened by the fixed block 24 is provided with a bearing, and the inner ring of the bearing is fixed to the inner wall of the rotating groove 291, and the outer wall of the bearing is fixed to one side of the rotating plate 292, the inner wall of the bearing is matched with the rotating hole 293, and the shaft 294 passes through the bearing, the rotating hole 293 and the blocking plate 297 and is fixed; 5) The fixing block 24 is fixed to the inside of the housing 21, and the outer surface of the fixing block 24 is rotatably embedded with a support rod 26, and the position of the support rod 26 is aligned with the center position of the rotation hole starting from the outside of the housing 21, and then the gear 25 is placed outside the support rod 26, and then the first rotating rod 22 is contacted with the support rod 26 from the inside of the rotation hole, and the gear 25 is sleeved on the outer surface of the first rotating rod 22 by fixing glue, and the first rotating rod 22 and the gear 25 are fixed by welding; 6) Rotate and fix the rotating ring 28 inside the rotating groove 27 inside the housing 21, and at the same time, clamp and fix the gear ring 211 with the first fixing ring 210 and the second fixing ring 212, and fix the first fixing ring 210 and the rotating ring 28; 7) Then, the cover plate 213 is fixed to the first fixing ring 210, the second fixing ring 212 and the gear ring 211, and the sliding hole opened in the cover plate 213 is aligned with the slide plate 295, and then the connecting rod 298 is fixed to the slide plate 295, and then the pressing plate 299 is fixed to the connecting rod 298, wherein the sliding hole is a circular convex shape, and the connecting rod 298 is adapted to the sliding hole and is a circular convex shape; 8) Fix the baffle 214 to the groove 23 of the first rotating rod 22, then make all the baffles 214 perpendicular to the housing 21, rotate the second rotating rod 215 equidistantly and fix it inside the connecting ring 216, and make the direction of the fixing groove of the second rotating rod 215 the same as the groove 23 of the first rotating rod 22, then control the connecting ring 216 to drive the fixing groove on the second rotating rod 215 to contact the baffle 214, and stop fixing when the second rotating rod 215 is located at the center of the baffle 214, and fix the connecting ring 216 to the port of the horn tube 1; 9) Assemble the four support plates 4 and the arc rod 5, and fix the motor 6 at the center of the four support plates 4, and then fix the support plates 4 to the inner wall of the connecting shell 3 to complete the assembly.

[0019] Working principle: like Figure 1-6As shown, the plate is placed on the workbench of the spinning machine to ensure that there is an appropriate gap between the plate and the rotating mold of the spinning machine, the spinning machine is started, the rotating mold is rotated at a predetermined speed, and the inner rotation function of the spinning machine is adjusted to ensure uniform spinning of the plate, and the pressure of the rotating mold is gradually increased so that the plate is evenly pressed during the rotation process to achieve the required plate thickness and shape, and the trumpet tube 1 and the connecting shell 3 are obtained. The rotation of the spinning machine is stopped, and the connecting shell 3 is cut by high-pressure water cutting to obtain a through hole compatible with the trumpet tube 1, and the trumpet tube 1 and the through hole of the connecting shell 3 are fixedly connected, and are fixed by welding. The spring 296 is fixed to the slide plate 295, and the other end of the spring 296 is fixed. The end is fixed to one side of the rotating plate 292, and then the slide plate 295 has a spring 296 on one side fixed to one end of the shaft 294, the rotating plate 292 and the shaft 294 are in a sliding state, and the inner wall of the rotating groove 291 opened by the fixed block 24 is provided with a bearing, and the inner ring of the bearing is fixed to the inner wall of the rotating groove 291, and the outer wall of the bearing is fixed to one side of the rotating plate 292, the inner wall of the bearing is adapted to the rotating hole 293, the shaft 294 passes through the bearing, the rotating hole 293 and the blocking plate 297, the fixed block 24 is fixed to the inside of the housing 21, and the outer surface of the fixed block 24 is rotatably embedded with a support rod 26, and the position of the support rod 26 is aligned with the center position of the rotating hole starting from the outside of the housing 21, and then the gear 25 is placed on the support rod 2 6, then the first rotating rod 22 is brought into contact with the support rod 26 from the inside of the rotating hole, the gear 25 is sleeved on the outer surface of the first rotating rod 22 by fixing glue, and the first rotating rod 22 and the gear 25 are fixed by welding, the rotating ring 28 is rotated and fixed to the inside of the rotating groove 27 inside the housing 21, and the first fixing ring 210 and the second fixing ring 212 are clamped and fixed to the gear ring 211, and the first fixing ring 210 and the rotating ring 28 are fixed, and then the cover plate 213 is fixed to the first fixing ring 210, the second fixing ring 212 and the gear ring 211, and the sliding hole opened in the cover plate 213 is aligned with the slide plate 295, and then the connecting rod 298 is fixed to the slide plate 295, and then the pressing plate 299 is fixed to the connecting rod 298 is fixed, the baffle 214 is fixed to the groove 23 of the first rotating rod 22, and then all the baffles 214 are perpendicular to the shell 21, the second rotating rod 215 is rotated and fixed to the inside of the connecting ring 216 at an equal distance, and the direction of the fixing groove of the second rotating rod 215 is the same as the groove 23 of the first rotating rod 22, and then the connecting ring 216 is controlled to drive the fixing groove on the second rotating rod 215 to contact the baffle 214, and the second rotating rod 215 is located at the center of the baffle 214. The connecting ring 216 is fixed to the port of the horn tube 1, the four support plates 4 are assembled with the arc rod 5, and the motor 6 is fixed at the center of the four support plates 4, and then the support plate 4 is fixed to the inner wall of the connecting shell 3. In use,By pressing the pressure plate 299 and then rotating the cover plate 213, the first fixing ring 210, the second fixing ring 212 and the gear ring 211 can be driven to rotate, the gear ring 211 rotates and the gear 25 rotates, the gear 25 rotates and the first rotating rod 22 rotates, the first rotating rod 22 rotates and the baffle 214 and the second rotating rod 215 rotate, so that the aperture at the end of the speaker tube 1 can be changed, and then the adjustment effect can be achieved. After the pressure plate 299 is released, the pressure plate 299 will drive the slide plate 295 to move under the action of the spring 296, the slide plate 295 moves and the shaft rod 294 moves, and the shaft rod 294 moves and drives the baffle 297 to be tightly attached to the outer surface of the housing 21, thereby forming a damping force to limit the cover plate 213, so that the baffle 214 will not rotate easily after the adjustment rotation.

[0020] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A bell-shaped ventilation device, comprising a bell-shaped tube (1), characterized in that: An adjustment mechanism (2) is fixedly mounted on one end of the horn tube (1), the adjustment mechanism (2) comprising a housing (21), a plurality of rotation holes being formed on the outer surface of the housing (21), a first rotating rod (22) being rotationally connected to the inner wall of the rotation hole, a groove (23) being formed on one end of the first rotating rod (22), a baffle (214) being fixedly connected to the inner wall of the groove (23), a fixing block (24) being fixedly connected to the inner wall of the housing (21), a gear (25) being fixedly sleeved on the outer surface of the first rotating rod (22), a support rod (26) being fixedly connected to one end of the first rotating rod (22), and one end of the support rod (26) being rotationally embedded in the fixing block (24). 4), a rotating groove (27) is provided on the inner wall of the housing (21), a rotating ring (28) is rotatably connected to the inner wall of the rotating groove (27), a first fixing ring (210) is fixedly connected to the inner wall of the rotating ring (28), a gear ring (211) is fixedly connected to the inner wall of the first fixing ring (210), a second fixing ring (212) is fixedly connected to the inner wall of the gear ring (211), a cover plate (213) is fixedly connected between the first fixing ring (210), the second fixing ring (212) and the top of the gear ring (211), the gear ring (211) is meshingly connected to the gear (25), and a fixing mechanism (29) is provided inside the fixing block (24).

2. A bell-shaped ventilation device according to claim 1, characterized in that: The adjustment mechanism (2) further comprises a connecting ring (216) fixed to one end of the horn tube (1), wherein a plurality of second rotating rods (215) are rotatably connected inside the connecting ring (216), wherein the second rotating rods (215) are provided with fixing grooves matching the grooves (23), and the inner wall of the fixing grooves is fixedly connected to the outer surface of the baffle (214).

3. The bell-shaped ventilation device according to claim 1, characterized in that: One side of the horn tube (1) is fixedly connected to a connection shell (3), the inner wall of the connection shell (3) is fixedly connected to a plurality of support plates (4), the outer surfaces of two of the support plates (4) are fixedly connected to arc-shaped rods (5), one side of the plurality of support plates (4) is fixedly mounted with a motor (6), and the output end of the motor (6) is fixedly connected to a fan (7).

4. The bell-shaped ventilation device according to claim 1, characterized in that: The adjustment mechanism (2) comprises a rotation groove (291) formed on one side of the fixed block (24); a rotation plate (292) is rotatably connected to the inner wall of the rotation groove (291); a rotation hole (293) is formed on one side of the rotation plate (292); one end of the rotation hole (293) is fixedly penetrated to the outside of the housing (21).

5. A bell-shaped ventilation device according to claim 4, characterized in that: The inner wall of the rotating hole (293) is rotatably connected to a shaft rod (294), the outer surface of the shaft rod (294) is slidably connected to the inner wall of the rotating plate (292), one end of the shaft rod (294) is fixedly connected to a slide plate (295), the outer surface of the slide plate (295) is slidably connected to the inner wall of the rotating groove (291).

6. A bell-shaped ventilation device according to claim 5, characterized in that: A spring (296) is provided on the outer surface of the shaft rod (294), one end of the spring (296) is fixedly connected to one side of the slide plate (295), and the other end of the spring (296) is fixedly connected to one side of the rotating plate (292).

7. The bell-shaped ventilation device according to claim 5, characterized in that: The other end of the shaft rod (294) is fixedly connected to a blocking plate (297), and one side of the blocking plate (297) is provided with a slot adapted to one side of the housing (21).

8. The bell-shaped ventilation device according to claim 4, characterized in that: The fixing mechanism (29) further comprises a sliding hole formed on one side of the cover plate (213), the inner wall of the sliding hole being slidably connected to the outer surface of the slide plate (295), the inner wall of the sliding hole being slidably connected to a connecting rod (298), one end of the connecting rod (298) being fixedly connected to one side of the slide plate (295), and the other end of the connecting rod (298) being fixedly connected to a pressure plate (299).

9. A manufacturing process of a bell-mouth ventilation device, characterized in that: The following steps are involved: 1) Place the sheet on the workbench of the spinning machine, ensure that there is an appropriate gap between the sheet and the rotating mold of the spinning machine, start the spinning machine, rotate the rotating mold at a predetermined speed, and adjust the inner rotation function of the spinning machine to ensure uniform spinning of the sheet, gradually increase the pressure of the rotating mold, so that the sheet is evenly pressed during the rotation process to achieve the desired sheet thickness and shape, and obtain the trumpet tube (1) and the connecting shell (3), and stop the rotation of the spinning machine; 2) Cutting the connecting shell (3) by high-pressure water cutting to obtain a through hole that matches the horn tube (1), and connecting the horn tube (1) and the through hole of the connecting shell (3) by fixed connection, and fixing them by welding; 3) manufacturing the parts housing (21), the first rotating rod (22), the fixing block (24), the gear (25), the support rod (26), the rotating ring (28), the fixing mechanism (29), the first fixing ring (210), the gear ring (211), the second fixing ring (212), the cover plate (213), the baffle plate (214), the second rotating rod (215), the connecting ring (216), the rotating plate (292), the rotating hole (293), the shaft rod (294), the slide plate (295), the spring (296), the blocking plate (297), the connecting rod (298), the pressing plate (299), the connecting shell (3), the support plate (4) and the arc rod (5) by cutting, stamping and other methods, and obtaining the motor (6); 4) Fix the spring (296) to the slide plate (295), and fix the other end of the spring (296) to one side of the rotating plate (292), and then fix the slide plate (295) with one side of the spring (296) to one end of the shaft rod (294), the rotating plate (292) and the shaft rod (294) are in a sliding state, and the inner wall of the rotating groove (291) provided by the fixed block (24) is provided with a bearing, and the inner ring of the bearing is fixed to the inner wall of the rotating groove (291), and the outer wall of the bearing is fixed to one side of the rotating plate (292), the inner wall of the bearing is matched with the rotating hole (293), and the shaft rod (294) passes through the bearing, the rotating hole (293) and the blocking plate (297) and is fixed; 5) The fixing block (24) is fixed to the inside of the housing (21), and a support rod (26) is rotatably embedded in the outer surface of the fixing block (24), and the position of the support rod (26) is aligned with the center position of the rotation hole starting from the outside of the housing (21), and then the gear (25) is placed outside the support rod (26), and then the first rotating rod (22) is brought into contact with the support rod (26) from the inside of the rotation hole, and the gear (25) is sleeved on the outer surface of the first rotating rod (22) by fixing glue, and the first rotating rod (22) and the gear (25) are fixed by welding; 6) Rotate and fix the rotating ring (28) inside the rotating groove (27) inside the housing (21), and at the same time, clamp and fix the gear ring (211) with the first fixing ring (210) and the second fixing ring (212), and fix the first fixing ring (210) and the rotating ring (28); 7) Then, the cover plate (213) is fixed to the first fixing ring (210), the second fixing ring (212) and the gear ring (211), and the sliding hole formed in the cover plate (213) is aligned with the slide plate (295), and then the connecting rod (298) is fixed to the slide plate (295), and then the pressing plate (299) is fixed to the connecting rod (298), wherein the sliding hole is a circular convex shape, and the connecting rod (298) is adapted to the sliding hole and is a circular convex shape; 8) Fix the baffle (214) to the groove (23) of the first rotating rod (22), then make all the baffles (214) perpendicular to the housing (21), rotate the second rotating rod (215) equidistantly and fix it inside the connecting ring (216), and make the direction of the fixing groove of the second rotating rod (215) the same as the groove (23) of the first rotating rod (22), then control the connecting ring (216) to drive the fixing groove on the second rotating rod (215) to contact the baffle (214), and stop fixing when the second rotating rod (215) is located at the center of the baffle (214), and fix the connecting ring (216) to the port of the horn tube (1); 9) Assemble the four support plates (4) and the arc rod (5), and fix the motor (6) at the center of the four support plates (4), and then fix the support plates (4) to the inner wall of the connecting shell (3), and the assembly is completed.

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