Negative air ion ventilation device for truck

Abstract

The invention discloses an air anion ventilation device for a truck, and belongs to the technical field of ventilation devices, the air anion ventilation device comprises an outer shell, a mounting groove is formed in the outer shell, and a plurality of air anion generators are arranged in the mounting groove. According to the device, the switching assembly is arranged, the sealing blades are driven to automatically turn over when the fan blades rotate, automatic opening and communication of the mounting groove are completed, automatic switching between the sealing posture and the opening posture of the mounting groove is achieved, and sealing of the device in the non-use state is guaranteed; dust and impurities are prevented from entering and affecting the internal environment of the boxcar when the mounting groove is opened for a long time, meanwhile, the mounting groove can well protect internal parts in a closed state, so that the service life of each part is prolonged, and the service life of the boxcar is prolonged. And air flowing in is matched with charged negative ions generated by the negative air ion generator to adsorb harmful substances in the boxcar, so that germ breeding is reduced, and cleanliness and sanitation of the boxcar are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of ventilation devices, and in particular relates to an air negative ion ventilation device for a truck. Background Art

[0002] Truck compartments are filled with a mixture of odors due to the long-term transportation of various goods, making the air quality inside them quite worrying. When transporting fresh produce or food, this kind of environment is prone to breed bacteria, which will affect the transported goods and is not conducive to the work of staff in the compartment. In order to avoid this situation, it is necessary to install supporting ventilation devices to circulate the air in the compartment.

[0003] The document with publication number CN111301113A discloses an intelligent carriage ventilation system. The purpose of this invention is to design an intelligent carriage ventilation system to control the air flow route in the carriage to the greatest extent, so that the diseased droplets sprayed by passengers when coughing and sneezing fall to the ground as quickly as possible and are sucked into the disinfection device for treatment and then discharged out of the car. This invention introduces an artificial intelligence system, and designs a set of "intelligent linkage multi-channel air duct system" to control the strength and angle of the air supply outlet on the top of the carriage to deliver fresh air downward in real time, and strive to make the air entering the top of the carriage flow vertically downward and be discharged from the carriage as soon as possible, thereby minimizing the time that harmful bacteria and viruses in the air stay in the carriage. However, in actual use, the traditional ventilation device, the vents are directly connected to the interior of the carriage, so that external impurities and dust can easily enter the carriage and affect the internal goods. Therefore, improvement is needed. Summary of the invention

[0004] The purpose of the present invention is to propose an air negative ion ventilation device for trucks in order to solve the problem that the vent is directly connected to the interior of the compartment, making it easy for external impurities and dust to enter the compartment and affect the goods inside.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An air negative ion ventilation device for a truck comprises an outer shell, a mounting slot is provided in the outer shell, a plurality of air negative ion generators are arranged in the mounting slot, a double-headed motor is arranged in the mounting slot, a conversion component is arranged above the double-headed motor, a direction adjustment component is arranged below the double-headed motor, and pressure relief components are arranged on both sides of the outer shell; The conversion assembly includes a fixed box, which is arranged in a mounting groove. A plurality of closed blades are rotatably connected to the outer peripheral side of the fixed box through a connecting shaft. The other end of the connecting shaft extends into the fixed box and is connected to a driving gear. A driving rack is meshedly connected to one side of the driving gear. The bottoms of the plurality of driving racks are connected to 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 fitted with the same extrusion ring that can move up and down under the action of an external force. The extrusion ring is driven by an external force to rotate the driving gear through the moving balls and the driving rack, so that the closed blades open and close with each other.

[0006] As a further description of the above technical solution: The output shaft located at the upper end of the double-headed motor is the upper output shaft, which is rotatably connected to the fixed box, and the outer surface of the upper output shaft is connected to a connecting box, and a plurality of limiting slide bars distributed in a circular array are connected inside the connecting box, and a movable counterweight block is slidably connected to the outer surface of the limiting slide bar, and the bottom of the movable counterweight block is fitted with the bottom of the inner wall of the connecting box, and the top of the movable counterweight block is connected to an extrusion block, and the top of the movable counterweight block is fitted with an extrusion wheel, and the top of the extrusion wheel is connected to a moving rod, and the end of the moving rod away from the extrusion wheel extends to the outside of the connecting box and is connected to an extrusion ring.

[0007] As a further description of the above technical solution: A protective filter is fixedly installed on the top of the outer shell, the top of the fixed box is connected to the bottom of the protective filter, and the bottom of the sliding plate is connected to a plurality of connecting rods distributed in a circular array. One end of the connecting rod away from the sliding plate extends to the outside of the fixed box and is connected to the moving ball.

[0008] As a further description of the above technical solution: A sliding hole is provided at the top of the driving rack, and a fixed sliding rod is slidably connected in the sliding hole. One end of the fixed sliding rod away from the driving rack is connected to the top of the inner wall of the fixed box. A second spring is sleeved on the outer surface of the fixed sliding rod, and both ends of the second spring are respectively connected to one side of the driving rack and the top of the inner wall of the fixed box.

[0009] As a further description of the above technical solution: A tension spring is sleeved on the outer surface of the limiting slide rod, and the two ends of the tension spring are respectively connected to one side of the movable counterweight block and one side of the inner wall of the connecting box. A third spring is sleeved on the outer surface of the movable rod, and the two ends of the third spring are respectively connected to one side of the extrusion wheel and the top of the inner wall of the connecting box.

[0010] As a further description of the above technical solution: The pressure relief assembly includes a mounting side plate, one side of the mounting side plate is connected to one side of the outer shell, the mounting side plate is provided with pressure relief grooves distributed in a linear array, a plurality of sealing plates for sealing the pressure relief grooves are arranged on the top of the mounting side plate, a mounting seat is hinged on one side of the sealing plate, the mounting seat is connected to the top of the mounting side plate, both sides of the top of the sealing plate are connected with connecting parts, one side of the connecting part is connected with a sliding ring, an arc-shaped sliding rod is sleeved inside the sliding ring, and two arc-shaped sliding rods are arranged on both sides of the sealing plate in a mirror-symmetrical manner.

[0011] As a further description of the above technical solution: Both ends of the arc-shaped slide bar are connected to fixed blocks, the bottom of the fixed block is connected to the top of the mounting side plate, the outer surface of the arc-shaped slide bar is sleeved with a first spring, and the two ends of the first spring are respectively connected to one side of one of the fixed blocks and one side of the sliding ring.

[0012] As a further description of the above technical solution: The direction adjustment component includes a rotating ring, which is rotatably connected to the mounting groove. A rotating table is arranged inside the rotating ring. A plurality of direction adjustment blades distributed in a circular array are rotatably connected between the rotating table and the rotating ring. One end of the direction adjustment blade close to the rotating ring is connected to a rotating shaft. One end of the rotating shaft extends to the outside of the rotating ring and is connected to a transmission gear. The tops of the plurality of transmission gears are meshedly connected to the same fixed gear ring, and the fixed gear ring is connected to one side of the outer shell.

[0013] As a further description of the above technical solution: The output shaft of the double-headed motor 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, and the outer surface of the lower output shaft is connected to a plurality of fan blades.

[0014] As a further description of the above technical solution: A mounting frame is connected to the outer peripheral side of the double-headed motor, the mounting frame is connected to the mounting groove, the mounting groove is connected to a mounting ring, and a plurality of negative air ion generators are distributed on the mounting ring in a circular array.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, by setting a conversion component, the upper output end drives the closed blades to rotate through the connecting box, the movable counterweight block, the extrusion block, the extrusion wheel, the movable rod, the extrusion ring, the driving rack and the driving gear, so that a plurality of closed blades in a closed state are opened to each other, so that the mounting groove is connected with the outside, so that the external airflow can enter the truck compartment through the mounting groove, and the closed blades are automatically turned over when the fan blades rotate, so that the automatic opening and connection of the mounting groove are completed, and the automatic switching of the two postures of the closed and open mounting grooves is realized, thereby ensuring the sealing of the device in a non-use state, avoiding the long-term opening of the mounting groove to cause dust and impurities to enter and affect the internal environment of the truck compartment. At the same time, the mounting groove in a closed state can also play a good protective role on the internal parts, thereby extending the service life of each part, and the air flowing in cooperates with the charged negative ions generated by the air negative ion generator to adsorb harmful substances in the truck compartment, reduce the breeding of bacteria, and ensure the cleanliness and hygiene of the truck compartment.

[0016] 2. In the present invention, by providing a pressure relief component, when the air pressure in the truck compartment is too high, the sealing plate will flip outward under the action of pressure, allowing the air in the truck compartment to flow out. Afterwards, the first spring drives the sealing plate to reset and close the pressure relief groove through the sliding ring and the connecting piece. The automatic opening and closing of the sealing plate can ensure the pressure balance inside and outside the truck compartment, avoiding the cargo in the truck compartment from being affected. At the same time, the sealing plate that remains closed under normal conditions can keep the truck compartment in a closed state, thereby improving the protection and privacy of cargo transportation.

[0017] 3. In the present invention, by setting a steering component, the lower output end of the double-headed motor drives the rotating table to rotate, and the rotating table cooperates with the rotating ring, the transmission gear and the fixed gear ring to drive the steering blade to rotate, so that the deflection angle of the steering blade is constantly changing. Through the revolution of the steering blade and its own rotation, the direction of the airflow entering the truck compartment is constantly changing, so that the external airflow and the negatively charged gas molecules can be more evenly filled in the truck compartment, thereby improving the exchange and purification effect of the air in the truck compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure from another viewing angle of the present invention; Figure 3 It is a schematic diagram of the three-dimensional split structure of the present invention; Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the conversion assembly of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram of part A in the middle; Figure 6It is a schematic diagram of the three-dimensional structure of the pressure relief assembly of the present invention; Figure 7 For the present invention Figure 6 The enlarged structural diagram of part B in the middle; Figure 8 It is a schematic diagram of the three-dimensional split structure of the conversion component of the present invention; Fig. 9 For the present invention Figure 8 The enlarged structural diagram of the middle C part; Fig.10 It is a three-dimensional structural schematic diagram of the direction adjustment assembly of the present invention; Fig.11 It is a structural schematic diagram of another viewing angle of the direction adjustment component of the present invention; Fig.12 It is a three-dimensional structural schematic diagram of the negative air ion generator and the outer shell of the present invention.

[0019] Legend: 1. Outer shell; 2. Protective filter; 3. Pressure relief assembly; 301. Mounting side plate; 302. Pressure relief groove; 303. Closing plate; 304. Fixed block; 305. Sliding ring; 306. Connecting piece; 307. Arc slide bar; 308. First spring; 309. Mounting seat; 4. Adjustment assembly; 401. Rotating ring; 402. Transmission gear; 403. Rotating table; 404. Adjustment blade; 405. Fixed gear ring; 5. Mounting groove; 6. Conversion assembly; 601. Enclosed blade; 602. Fixed box ; 603, sliding plate; 604, extrusion ring; 605, connecting box; 606, fixed slide 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; 616, tension spring; 617, limit slide rod; 618, extrusion block; 7, double-headed motor; 8, fan blades; 9, mounting bracket; 10, mounting ring; 11, negative air ion generator. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-Figure 12 , the present invention provides a technical solution: A negative air ion ventilation device for a truck comprises an outer shell 1, a mounting groove 5 is provided in the outer shell 1, a plurality of negative air ion generators 11 are arranged in the mounting groove 5, a double-headed motor 7 is arranged in the mounting groove 5, a conversion component 6 is arranged above the double-headed motor 7, a direction adjustment component 4 is arranged below the double-headed motor 7, pressure relief components 3 are arranged on both sides of the outer shell 1, 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 mounting groove 5, a mounting ring 10 is connected in the mounting groove 5, and a plurality of negative air ion generators 11 are distributed on the mounting ring 10 in a circular array.

[0022] The conversion assembly 6 includes a fixed box 602, which is arranged in the installation groove 5. The outer peripheral side of the fixed box 602 is rotatably connected to a plurality of closed blades 601 through a connecting shaft. The other end of the connecting shaft extends into the fixed box 602 and is connected to a driving gear 609. One side of the driving gear 609 is meshedly connected to a driving rack 608. The bottom of the plurality of driving racks 608 is connected to the same sliding plate 603. The bottom of the sliding plate 603 is provided with a plurality of moving balls 611. The bottom of the plurality of moving balls 611 is attached to the same extrusion ring 604 that can move up and down under the action of an external force. The extrusion ring 604 is driven by the external force. The driving gear 609 is driven to rotate by the moving ball 611 and the driving rack 608, so that the closed blades 601 are opened and closed with each other. The output shaft of the double-headed motor 7 at the upper end is the upper output shaft, which is rotatably connected to the fixed box 602. The outer surface of the upper output shaft is connected to the connecting box 605, and a plurality of limiting slide bars 617 distributed in a circular array are connected to the connecting box 605. The outer surface of the limiting slide bar 617 is slidably connected to a moving counterweight block 615. The bottom of the moving counterweight block 615 is in contact with the bottom of the inner wall of the connecting box 605. The top of the moving counterweight block 615 is connected to an extrusion block 618. The top of the extrusion wheel 614 is attached to the top of the extrusion wheel 614, and the top of the extrusion wheel 614 is connected to the moving rod 612, and the end of the moving rod 612 away from the extrusion wheel 614 extends to the outside of the connection box 605 and is connected to the extrusion ring 604. The top of the outer shell 1 is fixedly installed with a protective filter 2, and 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 circumferential array, and the 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. The top of the driving rack 608 is provided with a sliding hole, and the fixed rod 610 is slidably connected in the sliding hole. Slide rod 606, one end of the fixed slide rod 606 away from the driving rack 608 is connected to the top of the inner wall of the fixed box 602, the outer surface of the fixed slide rod 606 is sleeved with a second spring 607, and the 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, the outer surface of the limiting slide 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.

[0023] The specific implementation method is as follows: by setting the conversion component 6, the upper output end drives the closed blade 601 to rotate through the connection box 605, the movable counterweight block 615, the extrusion block 618, the extrusion wheel 614, the movable rod 612, the extrusion ring 604, the driving rack 608 and the driving gear 609, so that a plurality of closed blades 601 in a closed state are opened to each other, so that the installation slot 5 is connected with the outside, so that the external airflow can enter the truck compartment through the installation slot 5, and the closed blade 601 is automatically turned over when the fan blade 8 rotates, so that the installation slot 5 is automatically opened and connected, and the automatic switching between the closed and open positions of the installation slot 5 is realized, thereby ensuring that the device is in a non-use state. The seal prevents the dust and impurities caused by the long-term opening of the installation slot 5 from entering and affecting the internal environment of the truck compartment. At the same time, the installation slot 5 in the closed state can also provide better protection for the internal parts, thereby extending the service life of each part. In addition, the faster the speed of the two-way motor, the greater the centrifugal force exerted on the moving counterweight block 615, so that the moving counterweight block 615 drives the extrusion block 618 to move farther, thereby making the sliding plate 603 and the driving rack 608 move a greater amount. The driving rack 608 can drive the closed blade 601 to deflect to a larger angle through the driving gear 609, so that the opening position of multiple closed blades 601 is increased, the air intake is increased, and it can adapt to the operation requirements of the ventilation device.

[0024] The pressure relief assembly 3 includes a mounting side plate 301, one side of the mounting side plate 301 is connected to one side of the outer shell 1, and a pressure relief groove 302 distributed in a linear array is opened on the mounting side plate 301. A plurality of sealing plates 303 for sealing the pressure relief groove 302 are arranged on the top of the mounting side plate 301. A mounting seat 309 is hinged on one side of the sealing plate 303, and the mounting seat 309 is connected to the top of the mounting side plate 301. Connectors 306 are connected to both sides of the top of the sealing plate 303. The connectors A sliding ring 305 is connected to one side of 306, and an arc-shaped sliding rod 307 is sleeved inside the sliding ring 305. The two arc-shaped sliding rods 307 are arranged on both sides of the sealing plate 303 in a mirror-symmetrical manner. 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. The outer surface of the arc-shaped sliding rod 307 is sleeved with a first spring 308, 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.

[0025] The specific implementation method is as follows: by setting a pressure relief component 3, when the air pressure in the truck compartment is too high, the sealing plate 303 will flip outward under the action of pressure, allowing the air in the truck compartment to flow out. Afterwards, the first spring 308 drives the sealing plate 303 to reset and close the pressure relief 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 truck compartment can be ensured to avoid affecting the goods in the truck compartment. At the same time, the sealing plate 303 that remains closed under normal circumstances can keep the truck compartment in a closed state, thereby improving the protection and privacy of cargo transportation.

[0026] The direction adjustment component 4 includes a rotating ring 401, which is rotatably connected to the mounting groove 5. A rotating table 403 is arranged inside the rotating ring 401. A plurality of direction adjustment blades 404 distributed in a circular array are rotatably connected between the rotating table 403 and the rotating ring 401. One end of the direction adjustment blade 404 close to the rotating ring 401 is connected to a rotating shaft. One end of the rotating shaft extends to the outside of the rotating ring 401 and is connected to a transmission gear 402. The tops of the 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 shell 1. 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 table 403. The outer surface of the lower output shaft is connected to a plurality of fan blades 8.

[0027] The specific implementation method is as follows: by setting the direction adjustment component 4, the lower output end of the double-headed motor 7 drives the rotating table 403 to rotate, and the rotating table 403 cooperates with the rotating ring 401, the transmission gear 402 and the fixed gear ring 405 to drive the direction adjustment blade 404 to rotate, so that the deflection angle of the direction adjustment blade 404 is constantly changing. Through the revolution and rotation of the direction adjustment blade 404, the direction of the airflow entering the truck compartment is constantly changing, so that the external airflow and the negatively charged gas molecules can be more evenly filled in the truck compartment, thereby improving the exchange and purification effect of the air in the truck compartment.

[0028] Working principle: When in use, the staff first fixes the device as a whole to the truck compartment. When ventilation is needed, the staff starts the double-headed motor 7 to drive the fan blades 8 to rotate, and the fan blades 8 drive the air flow into the truck compartment. In this process, the air negative ion generator 11 operates to generate negatively charged gas molecules that enter the truck compartment along with the air flow.

[0029] During the rotation of the double-headed motor 7, the upper output end drives the connecting box 605 to rotate. Under the action of centrifugal force, the connecting box 605 drives the internal movable counterweight block 615 to move toward the outer peripheral side, and the movable counterweight block 615 drives the extrusion block 618 to move outward. The extrusion block 618 drives the extrusion wheel 614 to move upward. The extrusion wheel 614 drives the moving rod 612 to move upward. The moving rod 612 drives the extrusion ring 604 to move upward. The extrusion ring 604 drives the sliding plate 603 to move in the fixed box 602. The sliding plate 603 drives the driving rack 608 to move upward. The driving rack 608 drives the driving gear 609 to rotate. The driving gear 609 drives the closed blade 601 to rotate, so that a plurality of closed blades 601 in a closed state are opened to each other, so that the mounting groove 5 is connected with the outside, so that the external airflow can enter the truck compartment through the mounting groove 5.

[0030] When the external airflow carries negatively charged gas molecules into the truck compartment, the lower output end drives the rotating table 403 to rotate, the rotating table 403 drives the multiple direction-adjusting 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, so that the transmission gear 402 rotates, and the transmission gear 402 drives the direction-adjusting blades 404 to rotate, so that the deflection angle of the direction-adjusting blades 404 keeps changing, so that the air can fill the truck compartment more evenly.

[0031] As the ventilation device continues to take in air, the air pressure in the truck compartment will continue to increase. When the air pressure in the truck compartment is too high, due to the pressure difference between the inside and outside of the truck compartment, the sealing plate 303 will flip outward under the action of pressure, allowing the air in the truck compartment to flow out. Moreover, after the pressure inside and outside the truck compartment stabilizes, the first spring 308 drives the sliding ring 305 to perform a reset movement, and the sliding ring 305 drives the sealing plate 303 to perform a reset movement through the connecting piece 306. The sealing plate 303 returns to its original position and closes the pressure relief groove 302.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by 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 under the action of an external force, the extrusion ring (604) being driven by an external force to drive 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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