An air negative ion ventilation device for a freight vehicle

Abstract

The present invention discloses an air negative ion ventilation device for trucks, belonging to the technical field of ventilation devices, including an outer housing. An installation groove is provided inside the outer housing, and a plurality of air negative ion generators are arranged in the installation groove. In the present invention, by setting a conversion component, when the fan blade rotates, it drives the automatic flipping of the closing blade, completing the automatic opening and connection of the installation groove, realizing the automatic switching between the closed and open postures of the installation groove, ensuring the sealing of the device in the non-use state, avoiding dust and impurities from entering and affecting the internal environment of the truck carriage due to the long-term opening of the installation groove. At the same time, the installation groove in the closed state can also play a good protective role for the internal parts, thereby prolonging the service life of each part. Moreover, the flowing air and the charged negative ions generated by the air negative ion generator can adsorb harmful substances in the truck carriage, reduce the growth of germs, and ensure the cleanliness and hygiene of the truck carriage.

Description

Technical Field

[0001] The present invention belongs to the technical field of ventilation devices, and particularly relates to an air negative ion ventilation device for freight vehicles. Background Art

[0002] Due to the long-term transportation of various goods in the freight vehicle compartment, various odors are mixed, making the air quality inside quite worrying. When transporting fresh or food products, such an environment is prone to the growth of bacteria, which can affect the transported goods and is also not conducive to the work of the staff in the compartment. To avoid this situation, it is necessary to install a supporting ventilation device to circulate the air inside the compartment.

[0003] The document with the publication number CN111301113A discloses an intelligent compartment ventilation system to maximize the control of the air flow route in the compartment, so that the disease-carrying droplets ejected when passengers cough and sneeze can fall to the ground as quickly as possible and be sucked into the disinfection device for treatment and then discharged outside the vehicle. This invention introduces an artificial intelligence system and designs a "smart linkage multi-channel air duct system" to control the intensity and angle of the fresh air delivered downward by the air supply openings at the top of the compartment in real time, striving to make the air entering the top of the compartment flow vertically downward and be discharged from the compartment as soon as possible, so as to minimize the residence time of harmful bacteria and viruses in the air inside the compartment. However, in the actual use process, in traditional ventilation devices, the ventilation openings are directly connected to the inside of the compartment, making it easy for external impurities and dust to enter the compartment and affect the internal goods. Therefore, improvements are needed. Summary of the Invention

[0004] The purpose of the present invention is to provide an air negative ion ventilation device for freight vehicles to solve the problem that the ventilation openings are directly connected to the inside of the compartment, making it easy for external impurities and dust to enter the compartment and affect the internal goods.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An air negative ion ventilation device for freight vehicles includes an outer housing. An installation groove is formed inside the outer housing. A plurality of air negative ion generators are arranged in the installation groove. A double-headed motor is arranged in the installation groove. A conversion component is arranged above the double-headed motor. A direction adjustment component is arranged below the double-headed motor. Pressure relief components are arranged on both sides of the outer housing.

[0007] The conversion component includes a fixed box, which is arranged in the installation groove. A plurality of closing blades are rotatably connected to the outer peripheral side of the fixed box through connecting shafts. The other end of the connecting shaft extends into the fixed box and is connected with a driving gear. One side of the driving gear is meshed and connected with a driving rack. The bottoms of the plurality of driving racks are connected with the same sliding plate. A plurality of moving balls are arranged at the bottom of the sliding plate. The bottoms of the plurality of moving balls are attached to the same extrusion ring that can move up and down. The extrusion ring drives the driving gear to rotate through the moving balls and the driving rack, so that the closing blades open and close with each other.

[0008] As a further description of the above technical solution:

[0009] The output shaft of the double-headed motor at the upper end is the upper output shaft, which is rotatably connected to the fixed box. A connecting box is connected to the outer surface of the upper output shaft. A plurality of limiting sliding rods distributed in a circumferential array are connected in the connecting box. A moving counterweight block is slidably connected to the outer surface of the limiting sliding rod. The bottom of the moving counterweight block is attached to the bottom inner wall of the connecting box. An extrusion block is connected to the top of the moving counterweight block. An extrusion wheel is attached to the top of the moving counterweight block. A moving rod is connected to the top of the extrusion wheel. The end of the moving rod away from the extrusion wheel extends outside the connecting box and is connected with the extrusion ring.

[0010] As a further description of the above technical solution:

[0011] A protective filter screen is fixedly installed on the top of the outer shell body. The top of the fixed box is connected to the bottom of the protective filter screen. A plurality of connecting rods distributed in a circumferential array are connected to the bottom of the sliding plate. The end of the connecting rod away from the sliding plate extends outside the fixed box and is connected with the moving ball.

[0012] As a further description of the above technical solution:

[0013] A sliding hole is formed in the top of the driving rack. A fixed sliding rod is slidably connected in the sliding hole. The end of the fixed sliding rod away from the driving rack is connected to the top inner wall of the fixed box. A second spring is sleeved on the outer surface of the fixed sliding rod. The two ends of the second spring are respectively connected to one side of the driving rack and the top inner wall of the fixed box.

[0014] As a further description of the above technical solution:

[0015] A tension spring is sleeved on the outer surface of the limiting sliding rod. The two ends of the tension spring are respectively connected to one side of the moving counterweight block and one side of the inner wall of the connecting box. A third spring is sleeved on the outer surface of the moving rod. The two ends of the third spring are respectively connected to one side of the extrusion wheel and the top inner wall of the connecting box.

[0016] As a further description of the above technical solution:

[0017] The pressure relief component includes a mounting side plate. One side of the mounting side plate is connected to one side of the outer housing. The mounting side plate is provided with pressure relief through grooves distributed in a linear array. A plurality of sealing plates for sealing the pressure relief through grooves are arranged at the top of the mounting side plate. One side of the sealing plate is hinged with a mounting seat, and the mounting seat is connected to the top of the mounting side plate. Connecting pieces are connected to both sides of the top of the sealing plate. One side of the connecting piece is connected with a sliding ring, and an arc-shaped sliding rod is sleeved inside the sliding ring. The two arc-shaped sliding rods are symmetrically arranged on both sides of the sealing plate in a mirror image.

[0018] As a further description of the above technical solution:

[0019] Both ends of the arc-shaped sliding rod are connected with fixing blocks, the bottom of the fixing block is connected to the top of the mounting side plate, and a first spring is sleeved on the outer surface of the arc-shaped sliding rod. The two ends of the first spring are respectively connected to one side of one of the fixing blocks and one side of the sliding ring.

[0020] As a further description of the above technical solution:

[0021] The steering component includes a rotating ring, the rotating ring is rotationally connected to the mounting groove, a rotating table is arranged inside the rotating ring, and a plurality of steering vanes distributed in a circumferential array are rotationally connected between the rotating table and the rotating ring. One end of the steering vane close to the rotating ring is connected with a rotating shaft, and one end of the rotating shaft extends to the outside of the rotating ring and is connected with a transmission gear. The tops of a plurality of transmission gears are meshed with the same fixed gear ring, and the fixed gear ring is connected to one side of the outer housing.

[0022] As a further description of the above technical solution:

[0023] The output shaft at the lower end of the double-headed motor is the lower output shaft. The bottom of the lower output shaft is connected to the top of the rotating table, and a plurality of fan blades are connected to the outer surface of the lower output shaft.

[0024] As a further description of the above technical solution:

[0025] The outer peripheral side of the double-headed motor is connected with a mounting frame, the mounting frame is connected in the mounting groove, and a mounting ring is connected in the mounting groove. A plurality of air anion generators are distributed in a circumferential array on the mounting ring.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In the present invention, by providing a conversion component, the upper output end drives the closing blades to rotate through a connection box, a moving counterweight, an extrusion block, an extrusion wheel, a moving rod, an extrusion ring, a driving rack, and a driving gear, causing the multiple closing blades in a closed state to open relative to each other, enabling the installation groove to communicate with the outside. As a result, external air can enter the freight car compartment through the installation groove. When the fan blades rotate, they drive the automatic flipping of the closing blades, completing the automatic opening and connection of the installation groove, realizing the automatic switching between the closed and open postures of the installation groove, ensuring the sealing of the device in the non-use state, preventing dust and impurities from entering the freight car compartment due to the long-term opening of the installation groove and affecting the internal environment of the freight car compartment. At the same time, the installation groove in the closed state can also provide good protection for the internal parts, thereby extending the service life of each part. Moreover, the inflowing air, combined with the charged negative ions generated by the air negative ion generator, can adsorb harmful substances in the freight car compartment, reduce the growth of germs, and ensure the cleanliness and hygiene of the freight car compartment.

[0028] 2. In the present invention, by providing a pressure relief component, when the air pressure in the freight car compartment is too high, the sealing plate will flip outward under the action of pressure, allowing the air in the freight car compartment to flow out. Subsequently, the first spring drives the sealing plate to reset through the sliding ring and the connecting piece and closes the pressure relief through groove. Through the automatic opening and closing of the sealing plate, the air pressure balance inside and outside the freight car compartment can be ensured, preventing the goods in the freight car compartment from being affected. At the same time, the sealing plate that remains closed under normal conditions can keep the freight car compartment in a sealed state, improving the protection and privacy of goods transportation.

[0029] 3. In the present invention, by providing an orientation adjustment component, the lower output end of the double-headed motor drives the rotating platform to rotate. The rotating platform, in cooperation with the rotating ring, the transmission gear, and the fixed toothed ring, drives the orientation adjustment blades to rotate, causing the deflection angle of the orientation adjustment blades to change continuously. Through the revolution and self-rotation of the orientation adjustment blades, the direction of the air flow entering the freight car compartment is continuously changed, so that the external air flow and the negatively charged gas molecules can more evenly fill the freight car compartment, improving the air exchange and purification effect in the freight car compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall three-dimensional structure diagram of the present invention;

[0031] Figure 2 is the three-dimensional structure diagram of another perspective of the present invention;

[0032] Figure 3 is the three-dimensional disassembled structure diagram of the present invention;

[0033] Figure 4 is the three-dimensional sectional structure diagram of the conversion component of the present invention;

[0034] Figure 5 is of the present inventionFigure 4 Schematic diagram of the enlarged structure of part A;

[0035] Figure 6 Schematic three-dimensional structure diagram of the pressure relief component of the present invention;

[0036] Figure 7 of the present invention Figure 6 Schematic diagram of the enlarged structure of part B;

[0037] Figure 8 Schematic three-dimensional disassembled structure diagram of the conversion component of the present invention;

[0038] Figure 9 of the present invention Figure 8 Schematic diagram of the enlarged structure of part C;

[0039] Figure 10 Schematic three-dimensional structure diagram of the direction adjustment component of the present invention;

[0040] Figure 11 Schematic diagram of another perspective structure of the direction adjustment component of the present invention;

[0041] Figure 12 Schematic three-dimensional structure diagram of the air anion generator and the outer housing of the present invention.

[0042] Legend:

[0043] 1. Outer housing; 2. Protective filter screen; 3. Pressure relief component; 301. Installation side plate; 302. Pressure relief through groove; 303. Sealing plate; 304. Fixed block; 305. Sliding ring; 306. Connecting piece; 307. Arc-shaped sliding rod; 308. First spring; 309. Installation seat; 4. Direction adjustment component; 401. Rotating ring; 402. Transmission gear; 403. Rotating table; 404. Direction adjustment blade; 405. Fixed tooth ring; 5. Installation groove; 6. Conversion component; 601. Closing blade; 602. Fixed box; 603. Sliding plate; 604. Extrusion ring; 605. Connecting box; 606. Fixed sliding rod; 607. Second spring; 608. Driving rack; 609. Driving gear; 610. Connecting rod; 611. Moving ball; 612. Moving rod; 613. Third spring; 614. Extrusion wheel; 615. Moving counterweight block; 616. Tension spring; 617. Limit sliding rod; 618. Extrusion block; 7. Double-headed motor; 8. Fan blade; 9. Installation frame; 10. Installation ring; 11. Air anion generator. Detailed implementation manners

[0044] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0045] Please refer to Figures 1 - 12 , the present invention provides a technical solution:

[0046] An air negative ion ventilation device for a freight truck, comprising an outer housing 1, an installation groove 5 is formed in the outer housing 1, a plurality of air negative ion generators 11 are arranged in the installation groove 5, a double-headed motor 7 is arranged in the installation groove 5, a conversion assembly 6 is arranged above the double-headed motor 7, a direction adjustment assembly 4 is arranged below the double-headed motor 7, pressure relief assemblies 3 are arranged on both sides of the outer housing 1, an installation frame 9 is connected to the outer peripheral side of the double-headed motor 7, the installation frame 9 is connected to the installation groove 5, and an installation ring 10 is connected in the installation groove 5. The plurality of air negative ion generators 11 are arranged in a circumferential array on the installation ring 10.

[0047] The conversion component 6 includes a fixed box 602, which is arranged in the installation groove 5. A plurality of closing blades 601 are rotatably connected to the outer peripheral side of the fixed box 602 through connecting shafts. The other ends of the connecting shafts extend into the fixed box 602 and are connected to a driving gear 609. One side of the driving gear 609 is meshed and connected with a driving rack 608. The bottoms of the plurality of driving racks 608 are connected to the same sliding plate 603. A plurality of moving balls 611 are arranged at the bottom of the sliding plate 603. The bottoms of the plurality of moving balls 611 are in contact with the same extrusion ring 604 that can move up and down. The extrusion ring 604 drives the driving gear 609 to rotate through the moving balls 611 and the driving rack 608, so that the closing blades 601 open and close with each other. The output shaft at the upper end of the double-headed motor 7 is the upper output shaft, and the upper output shaft is rotatably connected to the fixed box 602. A connecting box 605 is connected to the outer surface of the upper output shaft. A plurality of limiting slide rods 617 distributed in a circumferential array are connected in the connecting box 605. A moving counterweight 615 is slidably connected to the outer surface of the limiting slide rod 617. The bottom of the moving counterweight 615 is in contact with the bottom inner wall of the connecting box 605. An extrusion block 618 is connected to the top of the moving counterweight 615. An extrusion wheel 614 is in contact with the top of the moving counterweight 615. A moving rod 612 is connected to the top of the extrusion wheel 614. One end of the moving rod 612 away from the extrusion wheel 614 extends outside the connecting box 605 and is connected to the extrusion ring 604. A protective filter screen 2 is fixedly installed at the top of the outer housing 1. The top of the fixed box 602 is connected to the bottom of the protective filter screen 2. A plurality of connecting rods 610 distributed in a circumferential array are connected to the bottom of the sliding plate 603. One end of the connecting rod 610 away from the sliding plate 603 extends outside the fixed box 602 and is connected to the moving ball 611. A sliding hole is formed at the top of the driving rack 608, and a fixed slide rod 606 is slidably connected in the sliding hole. One end of the fixed slide rod 606 away from the driving rack 608 is connected to the top inner wall of the fixed box 602. A second spring 607 is sleeved on the outer surface of the fixed slide rod 606. The two ends of the second spring 607 are respectively connected to one side of the driving rack 608 and the top inner wall of the fixed box 602. A tension spring 616 is sleeved on the outer surface of the limiting slide rod 617. The two ends of the tension spring 616 are respectively connected to one side of the moving counterweight 615 and one side of the inner wall of the connecting box 605. A third spring 613 is sleeved on the outer surface of the moving rod 612. The two ends of the third spring 613 are respectively connected to one side of the extrusion wheel 614 and the top inner wall of the connecting box 605.

[0048] The implementation method is specifically as follows: By setting the conversion component 6, the upper output end drives the closing blade 601 to rotate through the connection box 605, the moving counterweight 615, the extrusion block 618, the extrusion wheel 614, the moving rod 612, the extrusion ring 604, the driving rack 608 and the driving gear 609, so that the multiple closing blades 601 in a closed state are opened relative to each other, enabling the installation groove 5 to communicate with the outside. As a result, external air flow can enter the freight car compartment through the installation groove 5. When the fan blade 8 rotates, it drives the automatic flipping of the closing blade 601, completing the automatic opening and connection of the installation groove 5, realizing the automatic switching between the sealed and open postures of the installation groove 5, ensuring the sealing of the device in the non-use state, and preventing dust and impurities from entering the freight car compartment due to the long-term opening of the installation groove 5, which affects the internal environment of the freight car compartment. At the same time, the installation groove 5 in the closed state can also provide good protection for the internal parts, thereby extending the service life of each part. Moreover, the faster the bidirectional motor rotates, the greater the centrifugal force on the moving counterweight 615, causing the moving counterweight 615 to drive the extrusion block 618 to move a longer distance, resulting in a greater movement of the sliding plate 603 and the driving rack 608. The driving rack 608 can drive the closing blade 601 to deflect a larger angle through the driving gear 609, increasing the opening orientation of the multiple closing blades 601 and the air intake volume, and being able to adapt to the operating requirements of the ventilation device.

[0049] The pressure relief component 3 includes an installation side plate 301. One side of the installation side plate 301 is connected to one side of the outer housing 1. The installation side plate 301 is provided with pressure relief through grooves 302 distributed in a linear array. A plurality of sealing plates 303 for sealing the pressure relief through grooves 302 are arranged on the top of the installation side plate 301. One side of the sealing plate 303 is hinged to an installation seat 309, and the installation seat 309 is connected to the top of the installation side plate 301. Both sides of the top of the sealing plate 303 are connected with connecting pieces 306. One side of the connecting piece 306 is connected with a sliding ring 305. An arc-shaped sliding rod 307 is sleeved inside the sliding ring 305. The two arc-shaped sliding rods 307 are symmetrically arranged on both sides of the sealing plate 303. Both ends of the arc-shaped sliding rod 307 are connected with fixing blocks 304, and the bottom of the fixing block 304 is connected to the top of the installation side plate 301. A first spring 308 is sleeved on the outer surface of the arc-shaped sliding rod 307, and both ends of the first spring 308 are respectively connected to one side of one of the fixing blocks 304 and one side of the sliding ring 305.

[0050] The implementation method is specifically as follows: By setting the pressure relief component 3, when the air pressure in the freight car compartment is too high, the sealing plate 303 will flip outward under the action of pressure, allowing the air in the freight car compartment to flow out. After that, the first spring 308 drives the sealing plate 303 to reset and closes the pressure relief through groove 302 through the sliding ring 305 and the connecting piece 306. Through the automatic opening and closing of the sealing plate 303, the pressure balance inside and outside the freight car compartment can be ensured, preventing the goods in the freight car compartment from being affected. At the same time, the sealing plate 303 that remains closed under normal conditions can keep the freight car compartment in a sealed state, improving the protection and privacy of goods transportation.

[0051] The steering component 4 includes a rotating ring 401. The rotating ring 401 is rotatably connected to the installation groove 5. A rotating table 403 is arranged inside the rotating ring 401. A plurality of steering blades 404 distributed in a circular array are rotatably connected between the rotating table 403 and the rotating ring 401. One end of the steering blade 404 close to the rotating ring 401 is connected to a rotating shaft. One end of the rotating shaft extends outside the rotating ring 401 and is connected to a transmission gear 402. The tops of a plurality of transmission gears 402 are meshed and connected to the same fixed gear ring 405. The fixed gear ring 405 is connected to one side of the outer housing 1. The lower output shaft of the double-headed motor 7 is the lower output shaft, and the bottom of the lower output shaft is connected to the top of the rotating table 403. A plurality of fan blades 8 are connected to the outer surface of the lower output shaft.

[0052] The implementation method is specifically as follows: By setting the steering component 4, the lower output end of the double-headed motor 7 drives the rotating table 403 to rotate. The rotating table 403 cooperates with the rotating ring 401, the transmission gear 402 and the fixed gear ring 405 to drive the steering blade 404 to rotate, so that the deflection angle of the steering blade 404 is constantly changing. Through the revolution and self-rotation of the steering blade 404, the direction of the air flow entering the freight car compartment is constantly changing, so that the external air flow and the negatively charged gas molecules can be more evenly filled in the freight car compartment, improving the effect of air exchange and purification in the freight car compartment.

[0053] Working principle: When in use, the staff first fixedly installs the whole device on the freight car compartment. When ventilation is required, the staff starts the double-headed motor 7 to drive the fan blades 8 to rotate. The fan blades 8 drive the air flow into the freight car compartment. And during this process, the air anion generator 11 operates, and the generated negatively charged gas molecules enter the freight car compartment along with the air flow.

[0054] During the rotation of the dual-head motor 7, the upper output end drives the connection box 605 to rotate. Under the action of centrifugal force, the connection box 605 drives the internal moving counterweight 615 to move towards the outer periphery. The moving counterweight 615 drives the extrusion block 618 to move outwards. The extrusion block 618 drives the extrusion wheel 614 to move upwards. The extrusion wheel 614 drives the moving rod 612 to move upwards. The moving rod 612 drives the extrusion ring 604 to move upwards. The extrusion ring 604 drives the sliding plate 603 to move within the fixed box 602. The sliding plate 603 drives the driving rack 608 to move upwards. The driving rack 608 drives the driving gear 609 to rotate. The driving gear 609 drives the closing blades 601 to rotate, causing the multiple closing blades 601 in the closed state to open with each other, enabling the installation groove 5 to communicate with the outside, so that external air can enter the freight car compartment through the installation groove 5.

[0055] During the process of external air flow carrying negatively charged gas molecules into the freight car compartment, the lower output end drives the rotating platform 403 to rotate. The rotating platform 403 drives the multiple deflecting blades 404 and the rotating ring 401 to rotate. The rotating ring 401 drives the transmission gear 402 to revolve on the fixed gear ring 405, causing the transmission gear 402 to rotate on its own axis. The transmission gear 402 drives the deflecting blades 404 to rotate, causing the deflection angle of the deflecting blades 404 to change continuously, enabling the air to fill the freight car compartment more evenly.

[0056] As the ventilation device continues to intake air, the air pressure inside the freight car compartment will continuously increase. When the air pressure in the freight car compartment is too high, due to the pressure difference between the inside and outside of the freight car compartment, the sealing plate 303 will flip outwards under the action of pressure, allowing the air inside the freight car compartment to flow out. Moreover, after the air pressure inside and outside the freight car compartment stabilizes, the first spring 308 drives the sliding ring 305 to perform a reset movement. The sliding ring 305 drives the sealing plate 303 to perform a reset movement through the connecting piece 306, and the sealing plate 303 returns to its original position and closes the pressure relief through groove 302.

[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An air negative ion ventilation device for a truck, comprising an outer shell (1), wherein a mounting groove (5) is provided in the outer shell (1), wherein a plurality of air negative ion generators (11) are arranged in the mounting groove (5), wherein the negative ion ventilation device comprises: A double-headed motor (7) is arranged in the installation groove (5), a conversion assembly (6) is arranged above the double-headed motor (7), a direction adjustment assembly (4) is arranged below the double-headed motor (7), and pressure relief assemblies (3) are arranged on both sides of the outer shell (1); The conversion assembly (6) comprises a fixed box (602), the fixed box (602) being arranged in the mounting groove (5), the outer peripheral side of the fixed box (602) being rotatably connected to a plurality of closed blades (601) via a connecting shaft, the other end of the connecting shaft extending into the fixed box (602) and being connected to a driving gear (609), one side of the driving gear (609) being meshingly connected to a driving rack (608), the bottoms of the plurality of driving racks (608) being connected to a same sliding plate (603), the bottom of the sliding plate (603) being provided with a plurality of moving balls (611), the bottoms of the plurality of moving balls (611) being attached to a same extrusion ring (604) capable of moving up and down, the extrusion ring (604) driving the driving gear (609) to rotate via the moving balls (611) and the driving rack (608), so that the closed blades (601) are opened and closed with respect to each other.

2. The negative ion air ventilation device for trucks according to claim 1, characterized in that: The output shaft of the double-headed motor (7) located at the upper end is the upper output shaft, which is rotatably connected to the fixed box (602), and the outer surface of the upper output shaft is connected to a connecting box (605), and a plurality of limiting slide bars (617) distributed in a circular array are connected inside the connecting box (605), and the outer surface of the limiting slide bar (617) is slidably connected to a movable counterweight block (615), and the bottom of the movable counterweight block (615) is in contact with the bottom of the inner wall of the connecting box (605), and the top of the movable counterweight block (615) is connected to an extrusion block (618), and the top of the movable counterweight block (615) is in contact with an extrusion wheel (614), and the top of the extrusion wheel (614) is connected to a moving rod (612), and one end of the moving rod (612) away from the extrusion wheel (614) extends to the outside of the connecting box (605) and is connected to the extrusion ring (604).

3. The negative ion air ventilation device for a truck according to claim 1, characterized in that: A protective filter (2) is fixedly mounted on the top of the outer shell (1); the top of the fixed box (602) is connected to the bottom of the protective filter (2); the bottom of the sliding plate (603) is connected to a plurality of connecting rods (610) distributed in a circular array; one end of the connecting rod (610) away from the sliding plate (603) extends to the outside of the fixed box (602) and is connected to the moving ball (611).

4. The negative ion air ventilation device for a truck according to claim 1, characterized in that: A sliding hole is provided at the top of the driving rack (608), and a fixed sliding rod (606) is slidably connected in the sliding hole. One end of the fixed sliding rod (606) away from the driving rack (608) is connected to the top of the inner wall of the fixed box (602). A second spring (607) is sleeved on the outer surface of the fixed sliding rod (606), and two ends of the second spring (607) are respectively connected to one side of the driving rack (608) and the top of the inner wall of the fixed box (602).

5. The negative ion air ventilation device for a truck according to claim 2, characterized in that: The outer surface of the limiting sliding rod (617) is sleeved with a tension spring (616), and the two ends of the tension spring (616) are respectively connected to one side of the movable counterweight block (615) and one side of the inner wall of the connecting box (605). The outer surface of the movable rod (612) is sleeved with a third spring (613), and the two ends of the third spring (613) are respectively connected to one side of the extrusion wheel (614) and the top of the inner wall of the connecting box (605).

6. The negative ion air ventilation device for a truck according to claim 1, characterized in that: The pressure relief assembly (3) comprises a mounting side plate (301), one side of the mounting side plate (301) is connected to one side of the outer shell (1), the mounting side plate (301) is provided with pressure relief grooves (302) distributed in a linear array, a plurality of sealing plates (303) for sealing the pressure relief grooves (302) are arranged on the top of the mounting side plate (301), a mounting seat (309) is hingedly connected to one side of the sealing plate (303), the mounting seat (309) is connected to the top of the mounting side plate (301), both sides of the top of the sealing plate (303) are connected to connecting pieces (306), one side of the connecting piece (306) is connected to a sliding ring (305), an arc-shaped sliding rod (307) is sleeved inside the sliding ring (305), and the two arc-shaped sliding rods (307) are arranged on both sides of the sealing plate (303) in a mirror-symmetrical manner.

7. The negative air ion ventilation device for a truck according to claim 6, characterized in that: Both ends of the arc-shaped sliding rod (307) are connected to fixed blocks (304), the bottom of the fixed block (304) is connected to the top of the mounting side plate (301), and a first spring (308) is sleeved on the outer surface of the arc-shaped sliding rod (307), and the two ends of the first spring (308) are respectively connected to one side of one of the fixed blocks (304) and one side of the sliding ring (305).

8. The negative ion air ventilation device for a truck according to claim 1, characterized in that: The direction adjustment component (4) comprises a rotating ring (401), the rotating ring (401) being rotatably connected to the mounting groove (5), a rotating platform (403) being arranged inside the rotating ring (401), a plurality of direction adjustment blades (404) distributed in a circumferential array being rotatably connected between the rotating platform (403) and the rotating ring (401), one end of the direction adjustment blade (404) close to the rotating ring (401) being connected to a rotating shaft, one end of the rotating shaft extending to the outside of the rotating ring (401) and being connected to a transmission gear (402), the tops of the plurality of transmission gears (402) being meshedly connected to a same fixed gear ring (405), and the fixed gear ring (405) being connected to one side of the outer shell (1).

9. The negative ion air ventilation device for a truck according to claim 8, characterized in that: The output shaft of the double-headed motor (7) at the lower end is the lower output shaft, the bottom of the lower output shaft is connected to the top of the rotating platform (403), and the outer surface of the lower output shaft is connected to a plurality of fan blades (8).

10. The negative ion air ventilation device for a truck according to claim 1, characterized in that: A mounting frame (9) is connected to the outer peripheral side of the double-headed motor (7), the mounting frame (9) is connected to the inside of the mounting groove (5), the inside of the mounting groove (5) is connected to a mounting ring (10), and a plurality of negative air ion generators (11) are distributed on the mounting ring (10) in a circular array.

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