Plasma surface treatment device for plastic bottle blow molding production

Abstract

The invention discloses a plasma surface treatment device for plastic bottle blow molding production, and belongs to the technical field of plasma treatment devices, the plasma surface treatment device comprises a purification assembly, the purification assembly comprises a coarse filter screen and a fine filter screen which are arranged at the upper end and the lower end of the inner wall of a box body, and the coarse filter screen is movably and symmetrically arranged around the center of the box body; a first rotating shaft matched with the coarse filter screen is mounted at the center of the coarse filter screen, and the purification assembly is used for spraying and purifying waste gas generated in plasma treatment and separating and collecting particulate matters in the waste gas; the plasma box provides a treatment space for the plastic bottles and is used for etching the surfaces of the plastic bottles; and the liquid storage box is connected with the spraying pipe at the top end of the inner wall of the box body through a conveying pump. According to the invention, the technical problem that the blocking frequency of the filter piece is high in a short time due to the fact that the existing filter assembly adopts a tiled filter screen to filter wastewater and particulate matters filtered on the filter piece are continuously accumulated on the filter piece and are difficult to move and discharge can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of plasma devices, and in particular relates to a plasma surface treatment device for plastic bottle blow molding production. Background Art

[0002] The principle of plasma surface treatment is: plasma is a kind of electrically neutral material aggregate composed of ions, electrons and neutral particles. During the plasma surface treatment process, when the plasma collides with the material surface, it will transfer its energy to the molecules and atoms on the material surface, thus generating a series of physical and chemical reaction processes. It will also inject particles or gases into the material surface to cause collision, scattering, excitation, rearrangement, isomerization, defects, crystallization and amorphization, so as to achieve the treatment effect of changing the surface properties of the material.

[0003] During the production process of plastic bottles, a large number of ions, excited molecules, free radicals and other active particles in the plasma will act on the surface of the material, which can remove the original pollutants and impurities on the surface. This process will also produce an etching effect, which can roughen the surface of the sample and form many tiny pits, increasing the roughness ratio of the sample surface and improving the adhesion and wetting properties of the solid surface.

[0004] The gas after plasma treatment still contains some particulate pollutants and smoke. For this reason, the exhaust gas is sprayed with water in the purification device and filtered by the filler to achieve secondary purification before being discharged into the atmosphere. However, when the existing filter assembly collects particulate matter, it uses a flat filter to filter the wastewater, so that the particulate matter filtered out of the filter element is continuously accumulated on the filter element and is difficult to move and discharge. As a result, the filter element will be blocked in a short time, and the filter element will be blocked more frequently, affecting the normal purification work. At the same time, it also makes it difficult to remove the polluted particulate matter, and the single filter setting also bears a greater work intensity, reducing the purification capacity. In addition, when the purified gas is discharged, if the flow wind speed is large, it will also give a large pressure to the pipeline, and corresponding extrusion and depression will occur after working for a long time. Therefore, the existing device cannot adaptively adjust the gas flow rate for discharge. Summary of the invention

[0005] The purpose of the present invention is to provide a plasma surface treatment device for plastic bottle blow molding production to solve the technical problem that the existing filter assembly uses a flat filter screen to filter wastewater, so that the particles filtered out of the filter element are continuously accumulated on the filter element and are difficult to move and discharge, thereby causing the filter element to be blocked in a short time, resulting in a high frequency of filter blockage.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Plasma surface treatment device for plastic bottle blow molding production, including:

[0008] A purification component, the purification component includes a coarse filter and a fine filter placed at the upper and lower ends of the inner wall of the box body, the coarse filter is symmetrically arranged with respect to the center of the box body, and a first rotating shaft adapted thereto is installed at the center of the coarse filter, and the purification component is used for spraying and purifying the waste gas generated in the plasma treatment, and separating and collecting the particulate matter in the waste gas;

[0009] A plasma box, which provides a processing space for the plastic bottles and is used to etch the surface of the plastic bottles;

[0010] A liquid storage tank, wherein the liquid storage tank and the spray pipe at the top of the inner wall of the tank are connected via a delivery pump, and the liquid storage tank is used to store the spray liquid;

[0011] An exhaust flow splitter assembly, the exhaust flow splitter assembly comprising a tee pipe placed on a box body, a matching exhaust fan is provided at the center of the tee pipe, and a first flow equalizer is installed on the exhaust fan along the center height direction of the inner wall of the tee pipe, and a conical opening is opened at the inclined part of the pipe at both ends of the tee pipe, and a sealing ring fixed on a spring rod is installed on the conical opening, and the spring rod is fixed on the inner wall of the pipe through a bracket;

[0012] Wherein, both sides of the spring rod are telescopically connected with the second flow equalizer through the synchronization rod. As the pressure at the exhaust port increases, the opening between the sealing ring and the conical port is closed or opened.

[0013] Furthermore, one end of the fine filter is tilted downward and outward, and the bottom end of the fine filter is installed on a beam on the inner wall of the box body through a compression spring.

[0014] Furthermore, the protrusion at one end of the coarse filter is provided with a rounded corner near the inner wall of the box, an arc-shaped rubber pad is adhesively fixed to the rounded corner, and a trapezoidal block is provided on the top of the arc-shaped rubber pad along the width direction of the inner wall of the box, and the downward corner of the trapezoidal block is sealed and connected to the protrusion of the coarse filter.

[0015] Furthermore, the purification component also includes a driving motor arranged on the outer wall of the box body, the output shaft of the driving motor extends to the center gear, and the two ends of the outer wall of the center gear are respectively meshed with a first rotating tooth and a second rotating tooth that move in opposite directions, the output shaft of the center of the first rotating tooth and the second rotating shaft on the guide plate are connected by a first conveyor belt transmission, and the output shaft of the second rotating tooth and the third rotating shaft on the inner wall of the box body are connected by a second conveyor belt transmission.

[0016] Furthermore, the second rotating shaft on the material guide plate is movably connected to the inner wall of the box body, and as the second rotating shaft rotates, the material guide plate and the notch on the box body are closed or separated from each other.

[0017] Furthermore, the third rotating shaft is connected to a fourth rotating shaft arranged in a perpendicular central direction through a third conveyor belt transmission, one end of the fourth rotating shaft extends to a rotating cam at the bottom of the fine filter, and the third rotating shaft is connected to the first rotating shaft through a fourth conveyor belt transmission arranged in an interlaced manner with the third conveyor belt;

[0018] As the drive motor starts, the second shaft drives the guide plate to rotate toward the fine filter, the first shaft drives the coarse filter to rotate toward the fine filter, and the fourth shaft synchronously drives the rotating cam to vibrate and separate the particles on the fine filter.

[0019] Furthermore, the diameters of the first rotating shaft and the third rotating shaft remain the same, and the diameter of the third rotating shaft is 20-45 cm larger than the diameter of the fourth rotating shaft.

[0020] Furthermore, a filler layer is provided at the air inlet of the three-way pipe and is placed on the inner wall of the pipe.

[0021] Furthermore, recovery boxes for collecting particulate matter are provided at both ends of the outer wall of the box.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] A liquid storage tank is set up, and the waste gas and smoke generated by the plasma reaction can be purified by spraying water, and the particulate matter in the waste gas can be gathered and sprayed onto the purification component. In addition, a number of corresponding nozzles are arranged on the spray pipe, so that the waste gas in the box can be fully and effectively purified.

[0024] Setting up a purification component, the coordination of the coarse filter and the fine filter can reduce the overload purification work of a single filter. The coarse filter can first filter out larger impurities, and then the smaller impurities fall into the fine filter for filtration. Then the coarse filter can be tilted and rotated downward through the transmission mechanism. With the help of the gravity of the particles themselves and the impact force of the spray water, they can fall onto the fine filter. Then, with the help of the force of pressing the rotating cam, the particles on the fine filter can be vibrated and separated onto the guide plate, and then collected through the recovery box.

[0025] A gear meshing mechanism is provided, and under the action of the central gear, the first rotating teeth and the second rotating teeth at both ends rotate in opposite directions, and then with the help of mechanical transmission, the guide plate and the coarse filter screen can be moved toward the direction of the fine filter screen, so that the particulate impurities can be collected, and the rotating cam can be driven to move together during the transmission work, so as to vibrate and separate the particulate matter, thereby effectively playing the role of structural mechanical linkage. By collecting the particulate impurities, the wastewater filtered out by the purification component in the subsequent sequence will not be mixed with the particulate matter in the box again and be contaminated, thereby improving the purification effect of the device.

[0026] An exhaust diversion component is provided, and the first flow equalizer plate in the pipeline can have a preliminary diversion effect on the gas. When the wind speed is too high, the sealing ring on the tapered mouth is pulled inward by the extrusion force, and the opening between the sealing ring and the tapered mouth can be adaptively adjusted according to the wind speed. At the same time, the length of the second flow equalizer plate can also be extended by the pulling force of the spring rod, thereby expanding the flow equalization area, so that the wind speed can be buffered and adjusted, thereby preventing a large pressure on the pipeline and improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic structural diagram of a plasma surface treatment device for plastic bottle blow molding production in one embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of the interior of a plasma surface treatment device for plastic bottle blow molding production in one embodiment of the present invention;

[0030] Figure 3 It is a cross-sectional schematic diagram of a plasma surface treatment device for plastic bottle blow molding production in an embodiment of the present invention in the front view direction;

[0031] Figure 4 The present invention Figure 2 A magnified image of point A;

[0032] Figure 5 is a schematic diagram of the meshing transmission of the center rotating gear in one embodiment of the present invention;

[0033] Figure 6 is a schematic diagram of the connection between the third rotating shaft and the first rotating shaft in one embodiment of the present invention;

[0034] Figure 7 is a schematic diagram of the interior of a three-way pipe in one embodiment of the present invention;

[0035] Figure 8 The present invention Figure 7 Enlarged view of point B.

[0036] 1. The purifying component; 2. The coarse filter; 3. The fine filter; 4. The first rotating shaft; 5. The plasma box; 6. The liquid storage tank; 7. The spray pipe; 8. The exhaust diversion component; 9. The three-way pipe; 10. The exhaust fan; 11. The first flow-distributing plate; 12. The conical mouth; 13. The spring rod; 14. The sealing ring; 15. The synchronization rod; 16. The second flow-distributing plate; 17. The compression spring; 18. The crossbeam; 19. The fillet; 20. The arc rubber pad; 21. The trapezoidal block; 22. The driving motor; 23. The central gear; 24. The first rotating tooth; 25. The second rotating tooth; 26. The guide plate; 27. The second rotating shaft; 28. The first conveyor belt; 29. ​​The third rotating shaft; 30. The second conveyor belt; 31. The fourth rotating shaft; 32. The third conveyor belt; 33. The rotating cam; 34. The fourth conveyor belt; 35. The packing layer; 36. The recovery box. DETAILED DESCRIPTION

[0037] 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.

[0038] Reference Manual Attached Figure 1 As shown, a plasma surface treatment device for plastic bottle blow molding production includes:

[0039] Purification component 1, the purification component 1 comprises a coarse filter 2 and a fine filter 3 placed at the upper and lower ends of the inner wall of the box body, the coarse filter 2 is symmetrically arranged with respect to the center of the box body, and a first rotating shaft 4 adapted thereto is installed at the center of the coarse filter 2, and the purification component 1 is used for spraying and purifying the waste gas generated in the plasma treatment, and separating and collecting the particulate matter in the waste gas; plasma box 5, the plasma box 5 provides a processing space for the plastic bottles, and is used for etching the surface of the plastic bottles; liquid storage tank 6, the liquid storage tank 6 and the spray pipe 7 at the top of the inner wall of the box body are connected by a delivery pump, and the liquid storage tank 6 is used for storing the spray liquid;

[0040] The exhaust diversion component 8 includes a tee pipe 9 placed on the box body, a matching exhaust fan 10 is provided at the center of the tee pipe 9, and the exhaust fan 10 is installed with a first flow equalizer 11 along the center height direction of the inner wall of the tee pipe 9, and conical openings 12 are opened at the inclined parts of the pipes at both ends of the tee pipe 9, and a sealing ring 14 fixed on a spring rod 13 is installed on the conical opening 12, and the spring rod 13 is fixed to the inner wall of the pipe through a bracket; wherein, the spring rod 13 is telescopically connected with a second flow equalizer 16 on both sides through a synchronization rod 15, and as the pressure at the exhaust port increases, the opening between the sealing ring 14 and the conical opening 12 is closed or opened.

[0041] A liquid storage tank 6 is provided, and the waste gas and smoke generated by the plasma reaction can be purified by spraying water, and the particles in the waste gas can be gathered and sprayed onto the purification component 1, and a plurality of corresponding nozzles are provided on the spray pipe 7, so that the waste gas in the box can be fully and effectively purified.

[0042] refer to Figure 2 , Figure 3 and Figure 4 One end of the fine filter 3 is tilted downward toward the outside, and the bottom end of the fine filter 3 is installed on the crossbeam 18 on the inner wall of the box body through a compression spring 17. A rounded corner 19 is provided on the protruding portion of one end of the coarse filter 2 near the inner wall of the box body, and an arc-shaped rubber pad 20 is adhesively fixed to the rounded corner 19. A trapezoidal block 21 is provided on the top of the arc-shaped rubber pad 20 and is arranged along the width direction of the inner wall of the box body. The downward corner of the trapezoidal block 21 is sealed and connected to the protruding portion of the coarse filter 2.

[0043] Specifically, the trapezoidal block 21 on the inner wall of the box can, on the one hand, allow the particles at the edge to automatically slide onto the coarse filter 2 under the action of gravity, and on the other hand, adjust the horizontality of the protrusion on the coarse filter 2, thereby ensuring that the coarse filter 2 can maintain a corresponding horizontal position when filtering particles, thereby preventing a gap from being generated between the trapezoidal block 21 and affecting the normal filtering and separation work of the device. At the same time, the rounded corners 19 on the protrusion cooperate with the arc-shaped rubber pad 20 made of elastic material to allow the coarse filter 2 to rotate normally on the inner wall of the box, preventing the structure from getting stuck, and effectively ensuring the normal operation of the device.

[0044] The spray pipe 7 on the inner wall of the box can not only filter and purify the polluted particles in the exhaust gas and smoke, but also can make the particles on the rotating coarse filter 2 and the inclined fine filter 3 roll onto the guide plate 26 under the impact of the spray water through the corresponding spraying effect, and finally be collected.

[0045] The purification component 1 is set up, and the coordination of the coarse filter 2 and the fine filter 3 can reduce the overload purification work of a single filter and reduce the filtering purification capacity. The coarse filter 2 can first filter the larger impurities, and then the smaller impurities fall onto the fine filter 3 for filtration. Then, the coarse filter 2 can be tilted and rotated downward through the transmission mechanism. With the help of the gravity of the particles themselves and the impact force of the spraying water, the particles can fall onto the fine filter 3. Then, with the help of the force of the rotating cam 33, the particles on the fine filter 3 can be vibrated and separated onto the guide plate 26, and then collected through the recovery box 36.

[0046] A gear meshing mechanism is provided, and under the action of the central gear 23, the first rotating teeth 24 and the second rotating teeth 25 at both ends rotate in opposite directions, and then with the help of mechanical transmission, the guide plate 26 and the coarse filter 2 can be moved toward the direction of the fine filter 3, so that the particulate impurities can be collected, and during the transmission work, the rotating cam 33 can be driven to move together, so as to vibrate and separate the particulate matter, thereby effectively playing the role of structural mechanical linkage, and by collecting the particulate impurities, the wastewater filtered out by the purification component 1 in the subsequent sequence will not be mixed with the particulate matter in the box again and be contaminated, thereby improving the purification effect of the device.

[0047] refer to Figure 2 , Figure 6 and Figure 7 The purification component 1 also includes a driving motor 22 disposed on the outer wall of the box body, the output shaft of the driving motor 22 extends to the central gear 23, the two ends of the outer wall of the central gear 23 are respectively meshed with a first rotating tooth 24 and a second rotating tooth 25 that have reverse motion, the output shaft of the center of the first rotating tooth 24 and the second rotating shaft 27 on the guide plate 26 are connected by a first conveyor belt 28, the output shaft of the second rotating tooth 25 and the third rotating shaft 29 on the inner wall of the box body are connected by a second conveyor belt 30, the second rotating shaft 27 on the guide plate 26 is movably connected to the inner wall of the box body, and as the second rotating shaft 27 rotates, the guide plate 26 and the notch on the box body are closed or separated from each other.

[0048] The third rotating shaft 29 is connected to the fourth rotating shaft 31 arranged in the vertical center direction through the third conveyor belt 32. One end of the fourth rotating shaft 31 extends to the rotating cam 33 at the bottom of the fine filter 3. The third rotating shaft 29 and the first rotating shaft 4 are connected to each other through the fourth conveyor belt 34 arranged alternately with the third conveyor belt 32. As the driving motor 22 is started, the second rotating shaft 27 drives the guide plate 26 to rotate toward the fine filter 3, the first rotating shaft 4 drives the coarse filter 2 to rotate toward the fine filter 3, and the fourth rotating shaft 31 synchronously drives the rotating cam 33 to vibrate and separate the particulate matter on the fine filter 3.

[0049] The first rotating tooth 24 and the second rotating tooth 25 are arranged at both ends of the central gear 23, so that under the action of the driving motor 22, the first rotating tooth 24 and the second rotating tooth 25 can play a role of reverse transmission, and then through the transmission action, the first rotating shaft 4 and the second rotating shaft 27 respectively drive the coarse filter screen 2 and the guide plate 26 to rotate in the opposite direction, and both rotate toward the fine filter screen 3, and during the filtering work, the coarse filter screen 2 returns to a horizontal state, and the guide plate 26 is closed at the groove on the box body, and the first conveyor belt 28 can transmit power to the second rotating shaft 27, and the fourth conveyor belt 34 can transmit power to the first rotating shaft 4, and respectively drive the corresponding guide plate 26 and the coarse filter screen 2 to rotate through the second rotating shaft 27 and the first rotating shaft 4.

[0050] Since the first rotating shaft 4 and the second rotating shaft 27 are arranged in a highly staggered and parallel manner in the plane, the present invention converts the transmission force in the horizontal direction into the transmission force in the vertical direction by arranging the second conveyor belt 30 and the third conveyor belt 32, so as to ensure that the transmission force is transmitted to the first rotating shaft 4 and the second rotating shaft 27 respectively. During the rotation process, the third rotating shaft 29 can simultaneously transmit the transmission force to the fourth rotating shaft 31 through the third conveyor belt 32, thereby allowing the rotating cam 33 on the fourth rotating shaft 31 to rotate, and the rotating cam 33 intermittently collides with the inclined fine filter 3, thereby generating a corresponding vibration effect, and then the particles on the fine filter 3 can be separated by vibration to fall onto the guide plate 26, and the guide plate 26 acts as a transition medium for the particles on the fine filter 3 and the recovery box 36, and can transition the filtered particles from the fine filter 3 to the recovery box 36.

[0051] Specifically, the diameters of the first rotating shaft 4 and the third rotating shaft 29 remain the same, and the diameter of the third rotating shaft 29 is 20-45 cm larger than the diameter of the fourth rotating shaft 31. The above-mentioned shape setting allows the staggered third conveyor belt 32 and the fourth conveyor belt 34 to rotate independently, preventing the third conveyor belt 32 and the fourth conveyor belt 34 from interfering with each other when rotating on the third rotating shaft 29, thereby effectively transmitting the transmission force of the third rotating shaft 29 to the fourth rotating shaft 31 and the first rotating shaft 4 through the third conveyor belt 32 and the fourth conveyor belt 34 respectively.

[0052] A leakage hole is provided at the bottom end of the inner wall of the box body below the fine filter screen 3, and one end of the leakage hole is connected to the liquid storage tank 6 through the pump body. The wastewater after filtering and purifying the polluted particles by the purification component 1 enters the pump body through the leakage hole. The conduit on the pump body can be adaptively provided with a filter layer, which can play a role in treating and purifying the wastewater, and can also ensure the repeated use of the wastewater, improve the repeatability of water resource utilization, and avoid the waste of resources.

[0053] refer to Figure 7 and Figure 8 A packing layer 35 is provided at the air inlet of the three-way pipe 9 and is placed on the inner wall of the pipe. The packing layer 35 can be set to purification materials such as activated carbon and adsorption cotton to ensure the safe and healthy discharge of exhaust gas into the atmosphere. Recovery boxes 36 for collecting particulate matter are provided at both ends of the outer wall of the box.

[0054] An exhaust flow diversion component 8 is provided, and the first flow equalizer plate 11 in the pipeline can play a preliminary diversion effect on the gas. When the wind speed is too high, the sealing ring 14 on the tapered mouth 12 is pulled inward by the extrusion force, and the opening between the sealing ring 14 and the tapered mouth 12 can be adaptively adjusted according to the wind speed. At the same time, the length of the second flow equalizer plate 16 can also be extended by the pulling force of the spring rod 13, thereby expanding the flow equalization area, so that the wind speed can be buffered and adjusted, thereby preventing a large pressure on the pipeline and improving the safety of the device.

[0055] The first flow equalizer plate 11 is fixedly connected to the air inlet of the inner wall of the three-way pipe 9, and can play a role in preliminary diversion and regulation of the air flow. Under the action of the exhaust fan 10, when the wind force increases, since the sealing ring 14 is fixed on the spring rod 13, and the spring rod 13 is fixed to the inner wall of the pipe through the bracket, the wind pressure will push the sealing ring 14 to move toward the spring rod 13 and open the opening. The spring rod 13 can pull the telescopically connected second flow equalizer plate 16, thereby expanding the diversion area of ​​the second flow equalizer plate 16, which can further play a role in secondary diversion buffer regulation of the flow to avoid excessive wind force. Moreover, when the wind speed continues to increase, the opening The gap will also become larger accordingly. The second flow equalizer plate 16 is telescopically connected to both sides of the spring rod 13 through the synchronization rod 15. As the pressure at the exhaust port increases, the opening between the sealing ring 14 and the tapered mouth 12 closes or opens with each other. In other words, the second flow equalizer plate 16 is movable and telescopic and is connected to the spring rod 13, so that it can move synchronously under the tension of the spring rod 13. At the same time, under the continuous push of the spring rod 13, the diversion area of ​​the second flow equalizer plate 16 can continue to be expanded, and then the wind speed can be automatically reduced by tilting the pipeline, thereby improving the purpose of automatically adjusting the flow rate of the device, without the need for manual adjustment settings, which is conducive to energy saving and environmental protection.

[0056] In the present invention, the rotation of multiple purification components 1 not only achieves the technical effect of cleaning the particulate matter accumulated on the purification component 1 without taking out the purification component 1, thereby greatly reducing the frequency of clogging of the purification component 1, but also the rotation of the multiple purification components 1 drives the rotation of the guide plate 26 to open the slot on the box body, thereby preventing the filtered particulate matter from contaminating the subsequently filtered wastewater again, so that the purification component 1 produces an unexpected technical effect, which is also a non-obvious technical effect for those skilled in the art.

[0057] 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.

[0058] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Plasma surface treatment device for plastic bottle blow molding production, characterized in that: include: A purification component, the purification component includes a coarse filter and a fine filter placed at the upper and lower ends of the inner wall of the box body, the coarse filter is symmetrically arranged with respect to the center of the box body, and a first rotating shaft adapted thereto is installed at the center of the coarse filter, and the purification component is used for spraying and purifying the waste gas generated in the plasma treatment, and separating and collecting the particulate matter in the waste gas; A plasma box, which provides a processing space for the plastic bottles and is used to etch the surface of the plastic bottles; A liquid storage tank, wherein the liquid storage tank and the spray pipe at the top of the inner wall of the tank are connected via a delivery pump, and the liquid storage tank is used to store the spray liquid; An exhaust flow splitter assembly, the exhaust flow splitter assembly comprising a tee pipe placed on a box body, a matching exhaust fan is provided at the center of the tee pipe, and a first flow equalizer is installed on the exhaust fan along the center height direction of the inner wall of the tee pipe, and a conical opening is opened at the inclined part of the pipe at both ends of the tee pipe, and a sealing ring fixed on a spring rod is installed on the conical opening, and the spring rod is fixed on the inner wall of the pipe through a bracket; Wherein, both sides of the spring rod are telescopically connected with the second flow equalizer through the synchronization rod. As the pressure at the exhaust port increases, the opening between the sealing ring and the conical port is closed or opened.

2. The plasma surface treatment device for plastic bottle blow molding production according to claim 1, characterized in that: One end of the fine filter is tilted downward and outward, and the bottom end of the fine filter is installed on the crossbeam on the inner wall of the box body through a compression spring.

3. The plasma surface treatment device for plastic bottle blow molding production according to claim 1, characterized in that: The protrusion at one end of the coarse filter is provided with a rounded corner near the inner wall of the box, an arc-shaped rubber pad is adhesively fixed to the rounded corner, and a trapezoidal block is provided on the top of the arc-shaped rubber pad along the width direction of the inner wall of the box, and the downward corner of the trapezoidal block is sealed and connected to the protrusion of the coarse filter.

4. The plasma surface treatment device for plastic bottle blow molding production according to claim 1, characterized in that: The purification component also includes a driving motor arranged on the outer wall of the box body, the output shaft of the driving motor extends to the central gear, and the two ends of the outer wall of the central gear are respectively meshed with a first rotating tooth and a second rotating tooth that move in opposite directions, the output shaft of the center of the first rotating tooth and the second rotating shaft on the guide plate are connected by a first conveyor belt transmission, and the output shaft of the second rotating tooth and the third rotating shaft on the inner wall of the box body are connected by a second conveyor belt transmission.

5. The plasma surface treatment device for plastic bottle blow molding production according to claim 4, characterized in that: The second rotating shaft on the guide plate is movably connected to the inner wall of the box body. As the second rotating shaft rotates, the guide plate and the notch on the box body are closed or separated from each other.

6. The plasma surface treatment device for plastic bottle blow molding production according to claim 4, characterized in that: The third rotating shaft is connected to a fourth rotating shaft arranged in a perpendicular direction to the center through a third conveyor belt transmission, one end of the fourth rotating shaft extends to a rotating cam at the bottom of the fine filter, and the third rotating shaft is connected to the first rotating shaft through a fourth conveyor belt transmission arranged in an interlaced manner with the third conveyor belt; As the drive motor starts, the second shaft drives the guide plate to rotate toward the fine filter, the first shaft drives the coarse filter to rotate toward the fine filter, and the fourth shaft synchronously drives the rotating cam to vibrate and separate the particles on the fine filter.

7. The plasma surface treatment device for plastic bottle blow molding production according to claim 6, characterized in that: The diameters of the first rotating shaft and the third rotating shaft remain the same, and the diameter of the third rotating shaft is greater than the diameter of the fourth rotating shaft - cm.

8. The plasma surface treatment device for plastic bottle blow molding production according to claim 1, characterized in that: A filler layer is arranged on the inner wall of the pipe at the air inlet of the three-way pipe.

9. The plasma surface treatment device for plastic bottle blow molding production according to claim 1 is characterized in that recovery boxes for collecting particulate matter are provided at both ends of the outer wall of the box body.

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