Positive pressure filling machine with dustproof and sterilization functions

Abstract

The application discloses a positive pressure filling machine with dustproof and sterilization functions, and relates to the technical field of filling machines.The filling machine comprises a supporting table, a supporting frame, a conveying belt, a filling device, an air pressure detection device, an air curtain device and a bottle mouth detection device.The supporting frame and the conveying belt are fixedly connected, and the supporting table is arranged below the conveying belt.The filling device is connected with the supporting table, the air pressure detection device is connected with the filling device, the air curtain device is connected with the filling device, the bottle mouth detection device is connected with the filling device, the air curtain device is connected with the bottle mouth detection device, the air pressure detection device is connected with the air curtain device, and the supporting table and the supporting frame are used as the main installation base for the installation and positioning of other components.The conveying belt is used for conveying containers to be filled to the working area of the filling device, then the bottle mouth detection device is used for detecting the size of the bottle mouth, the filling device is used for adjusting the filling container to a specified position through the bottle mouth detection device, and then the filling device is used for filling the container.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filling machines, in particular to a positive pressure filling machine with dustproof and sterilization functions. BACKGROUND

[0002] In the fields of food, medicine, daily chemicals and the like with strict requirements on the cleanliness of filling environment, traditional filling machines have long been faced with multiple technical bottlenecks.

[0003] During the filling process, the bottle opening is directly in contact with the outside air, lacking an effective dustproof mechanism, and external dust is easy to enter the bottle along with the airflow to pollute the liquid. At the same time, the existing equipment relies on external environmental sterilization, lacking real-time sterilization design for the filling area (especially the area near the bottle opening), and some equipment also easily causes cross-contamination of bacteria due to the contact positioning of the filling head and the bottle opening. In addition, the traditional filling machine cannot automatically adjust the protection and positioning structure for different caliber containers, and it is difficult to monitor the change of the air pressure of the bottle opening in real time during filling. When the air pressure in the bottle is lower than that outside, it will further aggravate the risk of dust backflow, and the container is easy to deviate during transmission, resulting in misalignment of the center line of the bottle opening and the filling head. Not only does this affect the filling accuracy, but also makes the dustproof and sterilization structure unable to accurately act on the bottle opening area, ultimately seriously restricting product quality and production efficiency. SUMMARY

[0004] The present application relates to the technical field of filling machines, in particular to a positive pressure filling machine with dustproof and sterilization functions.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] The present application provides a positive pressure filling machine with dustproof and sterilization functions, which comprises a support table, a support frame, a conveyor belt, a filling device, an air pressure detection device, an air curtain device and a bottle opening detection device. The support frame and the conveyor belt are tightly connected, the support table is placed below the conveyor belt, the filling device is connected with the support table, the air pressure detection device is connected with the filling device, the air curtain device is connected with the filling device, the bottle opening detection device is connected with the filling device, the air curtain device is connected with the bottle opening detection device, and the air pressure detection device is connected with the air curtain device.

[0007] The support table and the support frame are used as the main installation base for the installation and positioning of other components, the container to be filled is sent to the working area of the filling device through the conveying belt, the bottle opening size is detected through the bottle opening detection device, the filling container is adjusted to the designated position through the bottle opening detection device, the filling device starts to fill the container, the angle of the air curtain device is adjusted to adapt to the size of the different bottle openings under the control of the bottle opening detection device, the bottle opening air pressure and the air pressure outside the bottle are detected through the air pressure detection device during the filling process, when the bottle opening air pressure is less than the air pressure outside the bottle, the air curtain device is started to prevent dust from flowing back to the bottle opening, and there is no direct contact with the bottle opening to avoid the entry of bacteria into the bottle, and the fast jet flow around the bottle opening can also carry away the surrounding air, which has good dustproof effect and certain sterilization effect.

[0008] Further, the filling device comprises a liquid storage tank, a compressor, a support body, a filling cylinder, a connecting frame, a filling pipe and a filling head, the liquid storage tank is arranged on the support table, the liquid storage tank and the support table are tightly connected, the liquid storage tank and the compressor are tightly connected, the output end of the compressor is in pipeline communication with the liquid storage tank, the output end of the compressor is in pipeline communication with the filling pipe, the even support body and the support table are tightly connected, the support body and the filling cylinder are tightly connected, the output end of the filling cylinder is tightly connected with the connecting frame, the connecting frame and the filling pipe are tightly connected, the filling pipe and the filling head are in pipeline communication, and the connecting frame is provided with a sterilization lamp which is tightly connected with the connecting frame.

[0009] The liquid storage tank is used for storing the liquid to be filled, the support body and the connecting frame are used as the main support for supporting and installing other components, the bacteria in the working area are killed by the sterilization lamp when the filling starts, the filling pipe is driven downward by the output of the filling cylinder when the container on the conveying belt is sent to the lower side of the filling head, and then the filling pipe enters the container, then the compressor starts to press the liquid in the liquid storage tank out, to the filling pipe, and then to the filling head, and the liquid is sprayed into the container by the filling head, so as to fill the container.

[0010] Further, the filling head tail is provided with a mounting ring, the filling head is provided with a first mounting cavity, a second mounting cavity and a third mounting cavity, the mounting ring is provided with an air pressure detection cavity and a mounting groove, the first mounting cavity has a plurality of first mounting cavities, the air pressure detection cavity has a plurality of air pressure detection cavities, the first mounting cavity and the air pressure detection cavity are in communication, the second mounting cavity and the third mounting cavity are arranged in the first mounting cavity, the second mounting cavity is connected with the bottle opening detection device, the third mounting cavity is connected with the bottle opening detection device, the first mounting cavity is connected with the air pressure detection device, and the mounting groove is connected with the air curtain device.

[0011] The mounting ring serves as the primary mounting base, with the first mounting cavity positioned at the bottom of the filling head. It also serves as the mounting ring for other devices. The air curtain device is mounted via a mounting groove, and the external air pressure detection cavity allows it to act on the first mounting cavity. The first mounting cavity provides a mounting position for the air pressure detection device, enabling it to monitor the bottle neck pressure in real time during filling. The second and third mounting cavities provide mounting positions for the bottle neck detection device.

[0012] Furthermore, the air pressure detection device includes a detection block, a fixed block, a return spring, and a magnet. The detection block is placed in the first mounting cavity and is slidably connected to the first mounting cavity. The fixed block is fastened to the first mounting cavity and the fixed block is fastened to the return spring. The end of the return spring away from the fixed block is connected to the magnet, and the end of the magnet away from the return spring is fastened to the detection block. The air pressure detection device also includes a detection coil. The magnet is placed inside the detection coil, and the detection coil is fastened to the first mounting cavity. The detection coil is connected to an air curtain device.

[0013] When the air pressure at the bottle opening decreases, the pressure inside the first mounting cavity also decreases, thus exerting a certain force on the detection block, causing it to move downwards. This movement of the detection block drives the magnet to move, which in turn drives the reset spring to move. Simultaneously, the movement of the magnet changes the magnetic flux within the detection coil, generating a current within the coil. The lower the air pressure, the stronger the current, resulting in a difference between the current output by the detection coil and the current in the air curtain device. Consequently, the strength of the air curtain formed by the air curtain device varies. The lower the air pressure, the stronger the air curtain, making it less likely for dust to enter the bottle.

[0014] Furthermore, the detection block is made of lightweight materials.

[0015] The detection block is made of lightweight materials, making it more susceptible to air pressure forces, thereby improving detection accuracy.

[0016] Furthermore, the air curtain device includes a rotating motor, an air pump, an air pipe, and a rubber hose. The rotating motor is placed on the mounting groove and is securely connected to the mounting groove. There are several rotating motors, which are arranged in a ring on the mounting groove. An air pipe is provided on the output end of the rotating motor. Adjacent air pipes are connected through rubber hoses. The air pump is securely connected to the liquid storage tank. The output end of the air pump is connected to the air pipe. The rotating motor is connected to the bottle mouth detection device. The air pump is electrically connected to the electromagnetic coil.

[0017] The mounting slot serves as the main mounting base and is primarily used for installing the air curtain device. When the electromagnetic coil and bottle mouth detection device output their outputs, the rotating motor outputs torque to drive the air pipe to rotate, allowing the air pipe to adjust its angle to accommodate containers of different diameters. Different air pipes are connected through rubber hoses, so that the gas output from the air pump to the air pipes can flow out from the rubber hoses when it exits the air pipes, thus forming an annular air curtain.

[0018] Furthermore, the bottle opening detection device includes an infrared emitter, a filter, and an infrared processor. The infrared emitter is placed in the second mounting cavity and is securely connected to the second mounting cavity. The infrared processor is placed in the third mounting cavity and is securely connected to the third mounting cavity. The filter is also securely connected to the third mounting cavity. The infrared processor is electrically connected to the rotating motor.

[0019] An infrared beam emitted by an infrared emitter illuminates the bottle opening and is then refracted back. Interference from other light sources is eliminated by a filter, and the light signal is detected by an infrared processor. After the infrared processor completes the detection, it outputs current to the rotating motor, thereby controlling the output of the rotating motor.

[0020] Furthermore, the bottle mouth detection device also includes a mounting block, a rotating block, a rotary motor, a mounting plate, a screw, a drive motor, and grippers. The mounting block is equipped with a rotary motor, the output end of which is fastened to the rotating block. The rotating block is fastened to the mounting plate. The mounting plate contains a screw and a drive motor. There are two drive motors. The output end of the drive motor is fastened to the screw. The end of the screw away from the drive motor is fastened to the mounting plate. The screw is equipped with grippers, which are threadedly connected to the screw.

[0021] The mounting block serves as the mounting base for positioning other components. During installation, the center line of the mounting block is aligned with the center line of the filling head. The grippers and drive motor are symmetrically distributed. Sensors on the mounting block detect whether the container has reached the filling area. When a sensor detects the container's arrival, a rotary motor controls the rotating block to rotate. This rotation drives the mounting plate, which in turn drives the screw. The screw then drives the grippers. Once the grippers reach the designated position, the drive motor outputs torque to move the screw, causing it to move further. The simultaneous movement of the grippers on both sides brings the container closer to the center, aligning the bottle neck center line with the filling head center line, thus improving the detection accuracy of the bottle neck diameter.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. Dual protection enhances dust and sterilization efficiency. For dust prevention, an air curtain device forms a ring-shaped airflow barrier around the bottle opening, preventing external dust from entering without direct contact. Simultaneously, the airflow quickly removes air near the bottle opening, reducing the basis for dust adhesion. For sterilization, a sterilization lamp is installed on the filling unit's connecting rack, enabling real-time sterilization of the filling area. The airflow from the air curtain device further reduces bacterial concentration near the bottle opening, and the non-contact design avoids cross-contamination between the equipment and the bottle opening.

[0024] 2. The air pressure detection device, through its structure of "detection block, magnet, and detection coil," can monitor changes in air pressure at the bottle opening in real time. When the air pressure at the bottle opening is lower than the outside air pressure, the detection coil generates current due to changes in magnetic flux, and the current is stronger as the air pressure decreases. This current directly controls the output strength of the air pump in the air curtain device; the lower the air pressure, the stronger the air curtain, which can dynamically resist dust backflow and solve the problem that traditional equipment's "fixed protection strength cannot cope with air pressure fluctuations."

[0025] 3. The bottle mouth detection device, through an infrared emitter, filter, and infrared processor, can accurately identify the diameter of the bottle mouth of different containers and output a signal to control the rotating motor of the air curtain device, driving the air tube to adjust the angle so that the annular air curtain always fits the bottle mouth area, adapting to multiple container sizes. Combined with the positioning structure of "rotating motor and grippers," it can automatically correct the container position, aligning the center line of the bottle mouth with the center line of the filling head, improving filling accuracy and ensuring that the dustproof and sterilization structure accurately acts on the bottle mouth. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the filling device structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the filling tube structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the filling head structure of the present invention;

[0030] Figure 5 for Figure 4 A magnified view of part A;

[0031] Figure 6 for Figure 4 A magnified view of part B;

[0032] Figure 7 for Figure 4 A magnified view of a portion of C;

[0033] Figure 8 This is a schematic diagram of the bottle mouth detection device of the present invention;

[0034] Figure 9 for Figure 8 A partial D-magnified view.

[0035] In the diagram: 1. Support table; 2. Support frame; 3. Conveyor belt; 4. Filling device; 41. Liquid storage tank; 42. Compressor; 43. Support body; 44. Filling cylinder; 45. Connecting frame; 46. Filling pipe; 47. Filling head; 471. Mounting ring; 472. First mounting cavity; 473. Second mounting cavity; 474. Third mounting cavity; 475. Pressure detection cavity; 476. Mounting groove; 5. Pressure detection device; 51. Detection... 52. Fixed block; 53. Return spring; 54. Magnet; 6. Air curtain device; 61. Rotating motor; 62. Air pump; 63. Air tube; 64. Rubber hose; 7. Bottle mouth detection device; 71. Infrared emitter; 72. Filter; 73. Infrared processor; 74. Mounting block; 75. Rotating block; 76. Rotating motor; 77. Mounting plate; 78. Screw; 79. Drive motor; 710. Gripper; 8. Sterilization lamp. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example: Figures 1-9 As shown, the present invention provides a positive pressure filling machine with dustproof and sterilization functions. The filling machine includes a support table 1, a support frame 2, a conveyor belt 3, a filling device 4, an air pressure detection device 5, an air curtain device 6, and a bottle mouth detection device 7. The support frame 2 and the conveyor belt 3 are fastened together. The support table 1 is placed below the conveyor belt 3. The filling device 4 is connected to the support table 1. The air pressure detection device 5 is connected to the filling device 4. The air curtain device 6 is connected to the filling device 4. The bottle mouth detection device 7 is connected to the filling device 4. The air curtain device 6 is connected to the bottle mouth detection device 7. The air pressure detection device 5 is connected to the air curtain device 6.

[0038] The support table 1 and support frame 2 serve as the main installation base for positioning other components. The container to be filled is delivered to the working area of ​​the filling device 4 via the conveyor belt 3. The bottle mouth size is then detected by the bottle mouth detection device 7, which simultaneously adjusts the filling container to the designated position. The filling device 4 then begins filling the container. At the same time, the bottle mouth detection device 7 controls the air curtain device 6 to adjust its angle to accommodate different bottle mouth sizes. During the filling process, the air pressure detection device 5 detects the air pressure at the bottle mouth and the air pressure outside the bottle. When the air pressure at the bottle mouth is lower than the air pressure outside the bottle, the air curtain device 6 is activated to prevent dust from flowing back to the bottle mouth. Since it does not directly contact the bottle mouth, it avoids bacteria from entering the bottle. At the same time, the rapidly sprayed airflow around the bottle mouth can also carry away the surrounding air, achieving a good dust prevention effect and a certain degree of sterilization.

[0039] like Figure 1 and Figure 2 As shown, the filling device 4 includes a liquid storage tank 41, a compressor 42, a support body 43, a filling cylinder 44, a connecting frame 45, a filling pipe 46, and a filling head 47. The liquid storage tank 41 is placed on the support table 1 and is fixedly connected to the support table 1. The liquid storage tank 41 is fixedly connected to the compressor 42. The output end of the compressor 42 is connected to the liquid storage tank 41 by a pipe. The liquid storage tank 41 is connected to the filling pipe 46 by a pipe. The support body 43 is fixedly connected to the support table 1. The support body 43 is fixedly connected to the filling cylinder 44. The output end of the filling cylinder 44 is fixedly connected to the connecting frame 45. The connecting frame 45 is fixedly connected to the filling pipe 46. The filling pipe 46 is connected to the filling head 47 by a pipe. A sterilization lamp 8 is provided on the connecting frame 45 and is fixedly connected to the connecting frame 45.

[0040] The storage tank 41 is used to store the liquid to be filled. The support body 43 and the connecting frame 45 serve as the main supports for supporting and installing other components. When filling begins, the bacteria in the working area are killed by the sterilization lamp 8. When the container on the conveyor belt 3 is sent to the bottom of the filling head 47, the filling cylinder 44 outputs and drives the filling tube 46 to move down until the filling tube 46 enters the container. Then the compressor 42 starts to press out the liquid in the storage tank 41 and send it to the filling tube 46. Then the liquid is sent to the filling head 47 through the filling tube 46. The filling head 47 sprays the liquid into the container, thereby filling the container.

[0041] like Figures 3-5As shown, the filling head 47 has a mounting ring 471 at its tail. The filling head 47 has a first mounting cavity 472, a second mounting cavity 473, and a third mounting cavity 474. The mounting ring 471 has a pressure detection cavity 475 and a mounting groove 476. There are several first mounting cavities 472 and several pressure detection cavities 475. The first mounting cavities 472 and the pressure detection cavities 475 are connected. The first mounting cavity 472 has a second mounting cavity 473 and a third mounting cavity 474. The second mounting cavity 473 is connected to the bottle mouth detection device 7. The third mounting cavity 474 is connected to the bottle mouth detection device 7. The first mounting cavity 472 is connected to the pressure detection device 5. The mounting groove 476 is connected to the air curtain device 6.

[0042] The mounting ring 471 serves as the main mounting base, with the first mounting cavity 472 positioned at the bottom of the filling head 47. The mounting ring 471 also serves as the mounting base for other devices. The air curtain device 6 is mounted via the mounting groove 476. The pressure detection cavity 475 allows external air pressure to act on the first mounting cavity 472. The first mounting cavity 472 provides a mounting position for the pressure detection device 5, enabling it to monitor the bottle neck pressure in real time during the filling process. The second mounting cavity 473 and the third mounting cavity 474 provide mounting positions for the bottle neck detection device 7.

[0043] like Figure 4 and Figure 6 As shown, the air pressure detection device 5 includes a detection block 51, a fixing block 52, a reset spring 53, and a magnet 54. The detection block 51 is placed in the first mounting cavity 472 and is slidably connected to the first mounting cavity 472. The fixing block 52 is fastened to the first mounting cavity 472 and is fastened to the reset spring 53. The end of the reset spring 53 away from the fixing block 52 is connected to the magnet 54, and the end of the magnet 54 away from the reset spring 53 is fastened to the detection block 51. The air pressure detection device 5 also includes a detection coil. The magnet 54 is placed inside the detection coil, and the detection coil is fastened to the first mounting cavity 472. The detection coil is connected to the air curtain device 6.

[0044] When the air pressure at the bottle opening decreases, the pressure inside the first mounting cavity 472 also decreases, thereby exerting a certain force on the detection block 51, causing the detection block 51 to move downwards. The movement of the detection block 51 drives the magnet 54 to move, which in turn drives the reset spring 53 to move. Simultaneously, the movement of the magnet 54 changes the magnetic flux in the detection coil, thereby generating a current in the detection coil. The lower the air pressure, the stronger the current, resulting in a difference between the current output by the detection coil and the current in the air curtain device 6. Consequently, the strength of the air curtain formed by the air curtain device 6 also varies. The lower the air pressure, the stronger the air curtain, making it less likely for dust to enter the bottle.

[0045] likeFigure 6 As shown, the detection block 51 is made of lightweight material.

[0046] By making the detection block 51 from a lightweight material, the detection block 51 is more susceptible to the force of air pressure, thereby improving the detection accuracy.

[0047] like Figure 2 and Figure 7 As shown, the air curtain device 6 includes a rotating motor 61, an air pump 62, an air pipe 63, and a rubber hose 64. The rotating motor 61 is placed on the mounting groove 476 and is fastened to the mounting groove 476. There are several rotating motors 61, which are arranged in a ring on the mounting groove 476. An air pipe 63 is provided on the output end of the rotating motor 61. Adjacent air pipes 63 are connected through the rubber hose 64. The air pump 62 is fastened to the liquid storage tank 41. The output end of the air pump 62 is connected to the air pipe 63. The rotating motor 61 is connected to the bottle mouth detection device 7. The air pump 62 is electrically connected to the electromagnetic coil.

[0048] Mounting slot 476 serves as the main mounting base and is primarily used for the installation of the air curtain device 6. When the electromagnetic coil and bottle mouth detection device 7 output their outputs, the rotating motor 61 outputs torque to drive the air pipe 63 to rotate, thereby adjusting the angle of the air pipe 63 to accommodate containers of different diameters. Different air pipes 63 are connected through rubber hoses 64, allowing the gas output from the air pump 62 to the air pipe 63 to flow out from the rubber hoses 64, thus forming an annular air curtain.

[0049] like Figure 5 As shown, the bottle mouth detection device 7 includes an infrared emitter 71, a filter 72, and an infrared processor 73. The infrared emitter 71 is placed in the second mounting cavity 473 and is securely connected to the second mounting cavity 473. The infrared processor 73 is placed in the third mounting cavity 474 and is securely connected to the third mounting cavity 474. The filter 72 is also securely connected to the third mounting cavity 474. The infrared processor 73 is electrically connected to the rotating motor 61.

[0050] The infrared beam emitted by the infrared emitter 71 shines on the bottle opening and is then refracted back. It passes through the filter 72 to eliminate interference from other light sources, and then the light signal is detected by the infrared processor 73. After the infrared processor 73 completes the detection, it outputs current to the rotating motor 61, thereby controlling the output of the rotating motor 61.

[0051] like Figure 8 and Figure 9As shown, the bottle mouth detection device 7 also includes a mounting block 74, a rotating block 75, a rotary motor 76, a mounting plate 77, a screw 78, a drive motor 79, and a gripper 710. The mounting block 74 is equipped with a rotary motor 76, the output end of which is fastened to the rotating block 75. The rotating block 75 is fastened to the mounting plate 77. The mounting plate 77 contains a screw 78 and a drive motor 79. There are two drive motors 79. The output end of the drive motor 79 is fastened to the screw 78. The end of the screw 78 away from the drive motor 79 is fastened to the mounting plate 77. The screw 78 is equipped with a gripper 710, which is threadedly connected to the screw 78.

[0052] Mounting block 74 serves as the mounting base for positioning other components. During installation, the center line of mounting block 74 is aligned with the center line of filling head 47. Meanwhile, grippers 710 and drive motor 79 are symmetrically distributed. Sensors on mounting block 74 detect whether the container has reached the filling area. When a sensor detects the container's arrival, rotary motor 76 controls rotating block 75 to rotate. Rotating block 75 drives mounting plate 77 to rotate, which in turn drives screw 78. Screw 78 then drives grippers 710. After grippers 710 reach a designated position, drive motor 79 outputs torque to move screw 78, causing grippers 710 to move. Simultaneous movement of both grippers 710 brings the container closer to the center, aligning the bottle neck center line with the filling head 47's center line, thus improving the bottle neck diameter detection effect.

[0053] The working principle of this invention: The support table 1 and support frame 2 serve as the main mounting base for positioning other components. The container to be filled is transported to the working area of ​​the filling device 4 via the conveyor belt 3. Then, the bottle mouth detection device 7 detects the bottle mouth size and simultaneously adjusts the filling container to the designated position. The filling device 4 then begins filling the container. Simultaneously, the bottle mouth detection device 7 controls the air curtain device 6 to adjust its angle to accommodate different bottle mouth sizes. During the filling process, the air pressure detection device 5 detects the air pressure at the bottle mouth and the external air pressure. When the air pressure at the bottle mouth decreases, the first... The pressure inside the mounting cavity 472 decreases, thus exerting a certain force on the detection block 51, causing it to move downwards. This movement of the detection block 51 drives the magnet 54 to move, which in turn moves the reset spring 53. Simultaneously, the movement of the magnet 54 changes the magnetic flux within the detection coil, generating a current. The lower the air pressure, the stronger the current, resulting in different current outputs from the detection coil to the air curtain device 6. Consequently, the strength of the air curtain formed by the air curtain device 6 varies; lower air pressure results in a stronger air curtain, making it less likely for dust to enter the bottle. Furthermore, the absence of direct contact with the bottle opening prevents bacteria from entering the bottle. The rapidly jetting airflow around the bottle opening also carries away surrounding air, providing excellent dust prevention and a degree of sterilization.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A positive pressure filling machine with dustproof and sterilization functions, characterized in that: The filling machine includes a support table (1), a support frame (2), a conveyor belt (3), a filling device (4), an air pressure detection device (5), an air curtain device (6), and a bottle mouth detection device (7). The support frame (2) and the conveyor belt (3) are fastened together. The support table (1) is placed below the conveyor belt (3). The filling device (4) is connected to the support table (1). The air pressure detection device (5) is connected to the filling device (4). The air curtain device (6) is connected to the filling device (4). The bottle mouth detection device (7) is connected to the filling device (4). The air curtain device (6) is connected to the bottle mouth detection device (7). The air pressure detection device (5) is connected to the air curtain device (6). The filling device (4) includes a liquid storage tank (41), a compressor (42), a support body (43), a filling cylinder (44), a connecting frame (45), a filling pipe (46), and a filling head (47). The liquid storage tank (41) is placed on a support table (1), and the liquid storage tank (41) and the support table (1) are fastened together. The liquid storage tank (41) and the compressor (42) are fastened together. The output end of the compressor (42) is connected to the liquid storage tank (41) via a pipe. The liquid storage tank (41) and the compressor (42) are connected together via a pipe. The filling tube (46) is connected to the pipeline, the support body (43) and the support table (1) are fastened together, the support body (43) and the filling cylinder (44) are fastened together, the output end of the filling cylinder (44) and the connecting frame (45) are fastened together, the connecting frame (45) and the filling tube (46) are fastened together, the filling tube (46) and the filling head (47) are connected together, the connecting frame (45) is equipped with a sterilization lamp (8), and the sterilization lamp (8) and the connecting frame (45) are fastened together. The filling head (47) is provided with an installation ring (471) at its tail end. The filling head (47) is provided with a first installation cavity (472), a second installation cavity (473) and a third installation cavity (474). The installation ring (471) is provided with a pressure detection cavity (475) and an installation groove (476). There are several first installation cavities (472) and several pressure detection cavities (475). The first installation cavity (472) and the pressure detection cavity (475) are connected. The first installation cavity (472) is provided with a second installation cavity (473) and a third installation cavity (474). The second installation cavity (473) is connected to a bottle mouth detection device (7). The third installation cavity (474) is connected to a bottle mouth detection device (7). The first installation cavity (472) is connected to a pressure detection device (5). The installation groove (476) is connected to an air curtain device (6). The air curtain device (6) includes a rotating motor (61), an air pump (62), an air pipe (63), and a rubber hose (64). The rotating motor (61) is placed on the mounting groove (476) and the rotating motor (61) is fastened to the mounting groove (476). There are several rotating motors (61), which are arranged in a ring on the mounting groove (476). The output end of the rotating motor (61) is provided with an air pipe (63). Adjacent air pipes (63) are connected through the rubber hose (64). The air pump (62) is fastened to the liquid storage tank (41). The output end of the air pump (62) is connected to the air pipe (63). The rotating motor (61) is connected to the bottle mouth detection device (7). The air pump (62) is electrically connected to the electromagnetic coil.

2. The positive pressure filling machine with dustproof and sterilization function according to claim 1, characterized in that: The air pressure detection device (5) includes a detection block (51), a fixing block (52), a reset spring (53), and a magnet (54). The detection block (51) is placed in the first mounting cavity (472), and the detection block (51) and the first mounting cavity (472) are slidably connected. The fixing block (52) and the first mounting cavity (472) are fastened together. The fixing block (52) and the reset spring (53) are fastened together. The end of the reset spring (53) away from the fixing block (52) is connected to the magnet (54). The end of the magnet (54) away from the reset spring (53) is fastened together with the detection block (51). The air pressure detection device (5) also includes a detection coil. The magnet (54) is placed in the detection coil. The detection coil and the first mounting cavity (472) are fastened together. The detection coil is connected to the air curtain device (6).

3. A positive pressure filling machine with dustproof and sterilization functions according to claim 2, characterized in that: The detection block (51) is made of lightweight material.

4. A positive pressure filling machine with dustproof and sterilization functions according to claim 1, characterized in that: The bottle mouth detection device (7) includes an infrared emitter (71), a filter (72) and an infrared processor (73). The infrared emitter (71) is placed in the second mounting cavity (473) and the infrared emitter (71) and the second mounting cavity (473) are fastened together. The infrared processor (73) is placed in the third mounting cavity (474) and the infrared processor (73) and the third mounting cavity (474) are fastened together. The filter (72) and the third mounting cavity (474) are fastened together.

5. A positive pressure filling machine with dustproof and sterilization functions according to claim 4, characterized in that: The bottle mouth detection device (7) further includes a mounting block (74), a rotating block (75), a rotary motor (76), a mounting plate (77), a screw (78), a drive motor (79), and a gripper (710). The mounting block (74) is provided with a rotary motor (76). The output end of the rotary motor (76) is fastened to the rotating block (75). The rotating block (75) is fastened to the mounting plate (77). The mounting plate (77) is provided with a screw (78) and a drive motor (79). There are two drive motors (79). The output end of the drive motor (79) is fastened to the screw (78). The end of the screw (78) away from the drive motor (79) is fastened to the mounting plate (77). The screw (78) is provided with a gripper (710). The gripper (710) and the screw (78) are threaded together.

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