Environment-friendly cold end spraying device for glass bottle

Abstract

The utility model discloses an environmental protection type glass bottle cold end spraying device, including erecting on the spraying fixed frame of glass bottle conveying line top, the hollow spraying board of liftable being located in the inside of frame, the liquid supply mechanism and gas supply mechanism of being the liquid supply for spraying board, the bottom of hollow spraying board is evenly equipped with conical nozzle, and its fine end can adjust and extend into the gap between the adjacent glass bottle bottle mouth end on conveying line, realizes static spraying in the dynamic conveying process of glass bottle, reduces the spraying liquid and enters the intracavity of bottle, the utility model discloses through with conical nozzle fine end adjustment and extend into the gap between the adjacent glass bottle bottle mouth, and cooperate the design that hollow air blows block blows down, on one hand realizes static spraying in dynamic conveying, and accurate control spraying liquid acts on the outer surface of glass bottle, avoids the infiltration of spraying liquid into the bottle, on the other hand, through the airflow depression, inhibits atomized liquid and floats, reduces the loss of spraying liquid and separates the spraying area, thereby reduces the waste amount of spraying liquid.

Description

Technical Field

[0001] This utility model belongs to the field of spraying technology, specifically relating to an environmentally friendly cold-end spraying device for glass bottles. Background Technology

[0002] In the field of cold-end spraying of glass bottles, traditional spraying equipment mostly uses fixed nozzles to perform dynamic spraying operations on glass bottles during transport. Because the relative position between the nozzle and the bottle opening is difficult to control precisely, a large amount of atomized spray liquid easily enters the inner cavity of the bottle during the spraying process, which not only causes serious waste of spray liquid, but also requires an additional bottle cleaning process afterward.

[0003] Meanwhile, traditional spray heads are mostly fixed installations, which cannot be flexibly adjusted according to the height and gap of glass bottles of different sizes. When dealing with the alternating production of various sizes of glass bottles, the spray head assembly needs to be frequently disassembled and replaced, resulting in poor production adaptability. In addition, during the spraying process, the atomized spray liquid is easily dispersed upwards due to airflow, leaving the sprayed area on the glass bottle surface, further aggravating the waste of spray liquid. Utility Model Content

[0004] The purpose of this invention is to provide an environmentally friendly cold-end spraying device for glass bottles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly glass bottle cold-end spraying device, comprising a spraying fixing frame mounted above the glass bottle conveyor line, a hollow spraying plate that can be lifted and lowered inside the frame, a liquid supply mechanism for supplying liquid to the spraying plate, and a gas supply mechanism.

[0006] The bottom of the perforated spraying plate is uniformly provided with conical spray nozzles, the fine end of which can be adjusted to extend into the gap between the mouths of adjacent glass bottles on the conveyor line, so as to achieve static spraying during the dynamic conveying of glass bottles and reduce the amount of spraying liquid entering the inner cavity of the bottle.

[0007] The perforated spraying plate is provided with perforated air blowing blocks on both sides, which suppress the atomized liquid from floating by blowing air downwards, reducing the waste of spraying liquid;

[0008] The air supply mechanism is connected to the hollow air blowing block through a branch air pipe, driving the airflow to press down in a direction to atomize the liquid droplets.

[0009] Preferably, the liquid supply mechanism includes a mounting base plate disposed on one side outside the spraying fixing frame and short liquid pipes equidistantly passing through the upper end of the spraying fixing frame. A liquid pump is provided at the upper end of the mounting base plate, the bottom end of the liquid pump is connected to the liquid supply tank, and the upper end of the liquid pump is connected to the upper end of the short liquid pipe through a pipe.

[0010] Preferably, the liquid hose is a flexible connection that adapts to the lifting and lowering movement of the perforated spraying plate, ensuring that the spraying liquid is continuously delivered to the conical nozzle.

[0011] Preferably, the air supply mechanism includes an air pump located on one side of the end of the spraying fixing frame. The air outlet of the air pump is connected to a flexible air pipe that extends movably through to the upper inner side of the spraying fixing frame. The airflow output by the air pump is distributed to each hollowed-out air blowing block via a branch main pipe.

[0012] Preferably, one side of the main branch pipe has multiple branch connecting pipes, and the main branch pipe is connected to the upper end of the air blowing blocks on both sides of the perforated spray plate through the branch connecting pipes to form a uniform downward airflow covering the width of the conveyor line.

[0013] Preferably, the end of the spraying fixing frame is provided with an adjusting cylinder, and the piston rod of the adjusting cylinder is fixed on both sides of the upper surface of the hollow spraying plate, driving the conical spray head to customize the lifting stroke according to the height and gap of the glass bottle.

[0014] Preferably, the bottom of both sides of the spraying fixing frame is provided with L-shaped fixing plates, which can be detachably connected to the conveyor line by manual locking rods and anti-loosening blocks.

[0015] Preferably, the liquid supply tank is fixed to a fixed mounting plate, and an injection pipe is connected to the outside of the liquid supply tank to achieve rapid liquid replenishment.

[0016] Preferably, the conical nozzle is a full-conical atomizing nozzle with an atomization angle of 60°–120° and an average droplet diameter of ≤80μm, suitable for spraying on the surface of glass bottles.

[0017] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0018] This invention achieves static spraying during dynamic conveying by adjusting the fine end of the conical nozzle to extend into the gap between the mouths of adjacent glass bottles and combining it with a hollow air blower to blow air downwards. This allows for precise control of the sprayed liquid acting on the outer surface of the glass bottle, preventing the sprayed liquid from seeping into the bottle. On the other hand, the downward pressure of the airflow suppresses the atomized liquid from floating, reducing the loss of the sprayed liquid from leaving the spraying area and fundamentally reducing the amount of sprayed liquid wasted.

[0019] This invention utilizes an adjustable cylinder at the end of the spraying frame to drive the perforated spraying plate up and down. The position of the conical spray nozzle can be flexibly adjusted according to the height of the glass bottle and the gap at the bottle opening, eliminating the need for frequent disassembly and replacement of the spray nozzle assembly. Simultaneously, the detachable connection structure between the L-shaped mounting plate and the manual locking lever facilitates quick assembly and disassembly and adjustment between different conveyor lines, effectively improving the equipment's adaptability to the alternating production of multiple glass bottle sizes, reducing equipment adjustment time, and increasing production efficiency.

[0020] This invention employs a collaborative operation mode of "static nozzle, dynamic conveyor." The conical nozzle is fixed on a precisely adjustable perforated spraying plate, ensuring a stable nozzle position during spraying. Only the glass bottle moves with the conveyor line, avoiding spraying defects or uneven thickness caused by misalignment between the nozzle and the glass bottle. This ensures a uniform coating on the glass bottle surface, further improving the stability of the spraying quality.

[0021] This utility model device directly prevents the spray liquid from entering the bottle through the nozzle gap positioning design, eliminating the bottle mouth sealing process and simplifying the production process; at the same time, the hollow air blowing block evenly distributes the airflow through the branch main pipe of the air supply mechanism, and suppresses the atomized liquid from floating with directional airflow. Compared with traditional exhaust equipment, it has lower energy consumption and eliminates the need to deal with the spray liquid recovery problem caused by exhaust, thus reducing the energy consumption of equipment operation while ensuring environmental protection. Attached Figure Description

[0022] Figure 1 This is a first-view view of the environmentally friendly glass bottle cold-end spraying device of this utility model;

[0023] Figure 2 This is a second-view perspective view of the environmentally friendly glass bottle cold-end spraying device of this utility model;

[0024] Figure 3 This is a top view of the perforated spray-coated plate of this utility model;

[0025] Figure 4 This is a bottom view of the perforated spray-coated plate of this utility model;

[0026] Figure 5 This is a side sectional view of the perforated spray-coated plate of this utility model.

[0027] In the diagram: 1. Spraying fixing frame; 2. Perforated spraying plate; 3. Conical nozzle; 4. Liquid supply mechanism; 5. Perforated air blowing block; 6. Air supply mechanism; 7. Mounting base plate; 8. Liquid short pipe; 9. Liquid pump; 10. Liquid supply tank; 11. Liquid hose; 12. Air blowing pump; 13. Flexible air pipe; 14. Branch air pipe; 15. Branch main pipe; 16. Adjusting cylinder; 17. Fixed mounting plate; 18. Manual locking lever; 19. Anti-loosening block; 20. Liquid injection pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved with", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0030] Please see Figure 1-5 This utility model provides a technical solution: an environmentally friendly glass bottle cold-end spraying device, comprising:

[0031] The spraying fixing frame 1 is made of high-strength, corrosion-resistant alloy material. Its overall structure is rectangular and mounted on the environmentally friendly glass bottle cold-end conveyor line, stably supporting the weight of the entire spraying device. Its core function is to precisely position the spraying device on the upper surface of the environmentally friendly glass bottle cold-end conveyor line, ensuring optimal working distance between the device and the line. On the upper inner side of the spraying fixing frame 1, a perforated spraying plate 2 is mounted via a lifting guide rail and adjustment components. This perforated spraying plate 2 can be flexibly adjusted in height according to the different specifications (such as height and diameter) of the glass bottles being transported, ensuring the accuracy of subsequent spraying operations and avoiding uneven spraying due to differences in bottle height.

[0032] The perforated spraying plate 2 is made of lightweight perforated alloy sheet, which not only reduces the overall weight but also reduces airflow resistance. Perforated air blowing blocks 5 are evenly spaced on both sides. Each air blowing block 5 has a spiral air guide structure inside, which forms a stable downward airflow field when air enters. This effectively blows the atomized liquid sprayed from the conical nozzles 3 downwards, reducing material waste caused by the upward flow of the atomized liquid and preventing the atomized liquid from adhering to the upper components of the device and affecting equipment operation. At the bottom of the perforated spraying plate 2, conical nozzles 3 are evenly arranged via threaded connections. The spacing of these conical nozzles 3 is precisely calculated, allowing them to accurately reach into the gaps between the conveyed glass bottles for spraying operations. During spraying, they will not collide with the conveyed glass bottles or obstruct their normal transport. This truly enables efficient and continuous conveying and spraying operations by flexibly adjusting the insertion depth of one end of the conical nozzle 3 according to the size of the gap between the glass bottles during continuous transport.

[0033] A liquid supply mechanism 4 is provided on one side of the outer side of the spraying fixing frame 1. This mechanism is specifically designed to provide a stable and continuous supply of spraying liquid to the conical nozzles 3 on the perforated spraying plate 2. At the same time, an air supply mechanism 6 is also provided on one side of the upper end face of the spraying fixing frame 1. Its main function is to provide high-pressure airflow to the perforated air blowers 5 on both sides of the perforated spraying plate 2, ensuring that the perforated air blowers 5 can stably perform their airflow guiding function.

[0034] The liquid supply mechanism 4 includes a mounting base plate 7, liquid short pipes 8, a liquid pump 9, a liquid supply tank 10, and a liquid hose 11. The mounting base plate 7, made of thickened steel plate, is bolted to the outside of the spraying frame 1, providing a stable foundation for the entire liquid supply mechanism 4. Multiple liquid short pipes 8, made of stainless steel, run equidistantly through the upper end of the spraying frame 1, each with a sealed interface at its upper end. The liquid pump 9, a high-efficiency, energy-saving stainless steel centrifugal pump, is fixedly mounted on the mounting base plate 7 via a shock-absorbing bracket. This pump features low noise, stable head, and high delivery efficiency, ensuring stable delivery of the spraying liquid. The bottom of the liquid pump 9 is connected to the liquid supply tank 10 via a corrosion-resistant pipe. The liquid supply tank 10, made of food-grade stainless steel, possesses excellent sealing and corrosion resistance, and can store a sufficient amount of spraying liquid. The upper end of the liquid pump 9 is connected to the sealed interface at the upper end of the liquid short pipes 8 via a high-pressure corrosion-resistant pipe, achieving efficient delivery of the spraying liquid.

[0035] The bottom ends of the liquid short pipes 8 are connected to the liquid hoses 11 via quick-connect couplings. The liquid hoses 11 are made of high-pressure resistant and chemically corrosion resistant polyurethane hoses, which have good flexibility and can freely expand and contract with the raising and lowering of the perforated spraying plate 2, avoiding damage to the pipes due to pulling. The other end of the liquid hoses 11 is connected to the liquid distribution cavity at the upper end of the perforated spraying plate 2 via a threaded coupling. After the sprayed liquid enters the distribution cavity of the perforated spraying plate 2 through the liquid short pipes 8 and liquid hoses 11, it is evenly distributed to each conical nozzle 3. Finally, the sprayed liquid is concentrated and sprayed out through the conical nozzles 3 and transformed into a fine mist, which is evenly sprayed onto the outer surface of the glass bottle to ensure a uniform coating thickness on the glass bottle surface.

[0036] The air supply mechanism 6 includes an air pump 12, a flexible air hose 13, branch air hoses 14, and a main branch air hose 15. The air pump 12 is mounted on one side of the end of the spraying frame 1 via a fixed bracket. It is an oil-free silent air compressor with advantages such as high air production efficiency, stable airflow, and low operating noise, providing a continuous high-pressure clean airflow for the entire air supply system. The outlet of the air pump 12 is connected to the flexible air hose 13 via a high-pressure connector. The flexible air hose 13 is made of high-pressure resistant rubber and can extend movably to the upper inner side of the spraying frame 1. The other end of the flexible air hose 13 is connected to a U-shaped branch air hose 14 via a tee connector. The branch air hose 14 is made of aluminum alloy and can evenly distribute the airflow to both sides. At both ends of the branch air pipe 14, there are branch main pipes 15 with multiple branch connecting pipes. The branch main pipe 15 and the branch connecting pipes are integrally formed. The branch main pipe 15 is connected to the upper end of the hollow air blowing blocks 5 on both sides of the hollow spray plate 2 through quick connectors to ensure that the high-pressure airflow can be quickly and evenly delivered to each hollow air blowing block 5.

[0037] The spraying frame 1 has evenly spaced adjusting cylinders 16 at its end via mounting bases. These cylinders are double-acting, characterized by fast response and high lifting precision. One end of the piston rod is fixed to both sides of the upper surface of the perforated spraying plate 2 via a flange. By adjusting the extension and retraction of the piston rod, the lifting height of the perforated spraying plate 2 can be precisely controlled to meet the spraying needs of glass bottles of different heights. Furthermore, the conical nozzles 3 at the bottom of the perforated spraying plate 2 can be customized according to the horizontal number of glass bottles on the conveyor line and the gap between adjacent bottles. Whether conveying glass bottles in a single row or multiple rows, the number and spacing of the customized conical nozzles 3 can achieve omnidirectional, blind-angle-free spraying operations.

[0038] The bottom of both sides of the spraying frame 1 are welded with L-shaped mounting plates 17. These mounting plates are made of thickened steel plate to enhance the stability of the connection with the conveyor line. On one side of the mounting plate 17, a manual locking rod 18 is threaded horizontally through it. The surface of the manual locking rod 18 has anti-slip textures for easy manual adjustment by the operator. The other end is fixed with an anti-loosening block 19, made of rubber, which provides good anti-slip and cushioning properties. When installing the cold-end spraying device, the mounting plates 17 are attached to the supports on both sides of the conveyor line. Rotating the manual locking rod 18 causes the anti-loosening block 19 to firmly press against the conveyor line support, thus securing the device. Disassembly is achieved by rotating the manual locking rod 18 in the opposite direction. This allows for convenient assembly and disassembly of the cold-end spraying device on the glass bottle conveyor line, enabling operators to flexibly adjust the device position according to production needs. It also facilitates subsequent equipment maintenance and repair, ensuring efficient spraying operations on the outer surface of glass bottles.

[0039] The liquid supply tank 10 is bolted to the upper surface of the mounting plate 17 on one side of the spraying frame 1. This installation method not only saves space but also ensures the stability of the liquid supply tank 10, preventing shaking during equipment operation. On the outside of the liquid supply tank 10, a liquid injection pipe 20 is connected via a flange interface. The liquid injection pipe 20 is made of stainless steel, and a shut-off valve can be installed on it later as needed. Operators can replenish the spraying liquid into the liquid supply tank 10 through the liquid injection pipe 20. During replenishment, the injection speed and volume can be controlled by the shut-off valve to prevent liquid overflow and waste.

[0040] The conical nozzle 3 employs a full-cone atomizing nozzle made of a stainless steel and ceramic composite material, offering excellent wear and corrosion resistance and extending its service life. Its atomization angle can be flexibly adjusted between 60° and 120° to suit different spraying needs. When spraying larger glass bottles, the atomization angle can be increased for wide-area coverage; when spraying smaller glass bottles, the atomization angle can be decreased to ensure spraying precision. Furthermore, the average droplet diameter of the conical nozzle 3 is ≤80μm, producing fine and evenly distributed droplets that perfectly suit the spraying requirements of glass bottle surfaces. This results in a uniform and smooth film on the glass bottle surface, effectively improving surface properties such as scratch resistance and corrosion resistance, without causing problems like dripping or buildup due to excessively large droplets.

[0041] Specifically, in use, the device first connects to the cold end conveyor line of the glass bottle via the L-shaped mounting plates 17 at the bottom of both sides of the spraying frame 1: the operator places the mounting plates 17 against the edge of the conveyor line, rotates the manual locking rod 18 on one side of the mounting plates 17, and makes the anti-loosening block 19 at the end of the manual locking rod 18 tightly abut against the outer wall of the conveyor line. The device is detachably fixed through the threaded locking action, ensuring that the device is erected above the conveyor line and is in a stable position, providing basic support for subsequent spraying operations.

[0042] Nozzle height and spacing adjustment: Based on the height specifications of the glass bottles on the conveyor line and the lateral spacing, activate the adjusting cylinder 16 at the end of the spraying fixing frame 1. The piston rod of the adjusting cylinder 16 extends and retracts, causing the perforated spraying plate 2 fixed at its lower end to move up and down along the inner side of the frame until the narrow end of the conical nozzle 3 at the bottom of the perforated spraying plate 2 precisely extends into the gap between the mouths of adjacent glass bottles. This process allows the nozzle position to be customized according to the lateral number and spacing of the glass bottles, ensuring that the nozzle does not obstruct the glass bottle conveying and can accurately align with the spraying area on the outer surface of the glass bottle.

[0043] Liquid supply system preparation: Check the amount of spraying liquid in the liquid supply tank 10 (fixed to the upper end of the fixed mounting plate 17 on one side). If it is insufficient, quickly replenish the liquid through the injection pipe 20 outside the liquid supply tank 10. Then start the liquid pump 9 in the liquid supply mechanism 4. The liquid pump 9 draws spraying liquid from the liquid supply tank 10 and delivers it through the pipeline to the liquid short pipe 8 that runs through the upper end of the spraying fixed frame 1. Then, through the flexible liquid hose 11 at the bottom of the liquid short pipe 8 (adapted to the lifting and lowering movement of the hollow spraying plate 2), the spraying liquid is stably delivered to the inside of the hollow spraying plate 2, thus completing the path connection of the spraying liquid.

[0044] Air supply system preparation: Start the air pump 12 in the air supply mechanism 6. The air flow generated by the air pump 12 is delivered to the U-shaped branch air pipe 14 through the soft air pipe 13 at the air outlet end (which can be adjusted as the perforated spray plate 2 moves). The branch air pipe 14 distributes the air flow to the branch main pipe 15 at both ends. Then, through multiple branch connecting pipes on the branch main pipe 15, it is evenly delivered to the perforated air blowing blocks 5 on both sides of the perforated spray plate 2, thus completing the path connection of the air flow.

[0045] When the glass bottle moves at a constant speed to the bottom of the device along the cold end conveyor line, the spraying liquid inside the perforated spraying plate 2 is sprayed out through the uniformly distributed conical nozzles 3 at the bottom under the pressure of the liquid pump 9. The conical nozzles 3 adopt a full conical atomizing nozzle, which atomizes the spraying liquid into fine droplets with an average diameter of ≤80μm at an atomization angle of 60°–120°. Since the fine end of the nozzle has extended into the gap of the glass bottle, the atomized droplets can accurately cover the outer surface of the glass bottle and avoid entering the inner cavity of the bottle.

[0046] During this process, the conical nozzle 3 remains static along with the perforated spray plate 2, while the glass bottles move dynamically with the conveyor line, forming a collaborative mode of "static nozzle + dynamic conveyor". This ensures that the outer surface of each glass bottle can be continuously and uniformly coated, adapting to the batch coating needs of glass bottles of different specifications.

[0047] While the conical nozzle 3 is spraying, the air blower 5 blows out a uniform airflow downwards under the drive of the air supply mechanism 6: the airflow delivered by the branch main pipe 15 is dispersed by the air blower 5 to form a directional downward airflow covering the width of the conveyor line. This airflow can effectively suppress the phenomenon of the atomized spray liquid drifting upwards due to air flow, and force more atomized droplets to adhere to the outer surface of the glass bottle, reducing the waste caused by the spray liquid leaving the spraying area.

[0048] Meanwhile, the flexible design of the soft air tube 13, combined with the flexible connection of the liquid hose 11, can be adjusted synchronously with the lifting and lowering of the hollow spray plate 2 driven by the adjusting cylinder 16, ensuring that the liquid and air supply are always continuous and unobstructed when the nozzle position changes, without affecting the stability of the spraying operation.

[0049] V. Operation Completion and Maintenance: Convenient disassembly and fluid replenishment ensure continuous operation.

[0050] When the spraying operation is completed or the conveyor line needs to be replaced, rotate the manual locking lever 18 in the opposite direction to disengage the anti-loosening block 19 from the conveyor line, and the device can be disassembled from the conveyor line. If the operation needs to continue, simply add spraying liquid to the liquid supply tank 10 through the liquid injection pipe 20 and repeat the above preparation and operation steps to achieve flexible reuse and efficient maintenance of the device.

[0051] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An environmentally friendly cold-end spraying device for glass bottles, comprising a spraying fixing frame (1) mounted above a glass bottle conveyor line, a perforated spraying plate (2) that can be lifted and lowered inside the frame, a liquid supply mechanism (4) for supplying liquid to the spraying plate, and a gas supply mechanism (6), characterized in that: The bottom of the hollow spray plate (2) is uniformly provided with conical nozzles (3). The thin end of the conical nozzle (3) can be adjusted to extend into the gap between the mouths of adjacent glass bottles on the conveyor line, so as to achieve static spraying during the dynamic conveying of glass bottles and reduce the amount of spray liquid entering the inner cavity of the bottle. The perforated spray plate (2) is provided with perforated air blowing blocks (5) on both sides, which suppress the atomized liquid from floating by blowing air downwards, thereby reducing the waste of spray liquid; The air supply mechanism (6) is connected to the hollow air blowing block (5) through the branch air pipe (14) to drive the airflow to press down and atomize the liquid droplets.

2. The environmentally friendly glass bottle cold-end spraying device according to claim 1, characterized in that: The liquid supply mechanism (4) includes a mounting base plate (7) set on one side outside the spraying fixed frame (1) and liquid short pipes (8) that pass through the upper end of the spraying fixed frame (1) at equal intervals. A liquid pump (9) is provided at the upper end of the mounting base plate (7). The bottom end of the liquid pump (9) is connected to the liquid supply tank (10). The upper end of the liquid pump (9) is connected to the upper end of the liquid short pipe (8) through a pipe.

3. The environmentally friendly glass bottle cold-end spraying device according to claim 2, characterized in that: The bottom end of each liquid short pipe (8) is connected to a liquid hose (11). The liquid hose (11) is a flexible connection that adapts to the lifting and lowering movement of the perforated spray plate (2) to ensure that the spraying liquid is continuously delivered to the conical nozzle (3).

4. The environmentally friendly glass bottle cold-end spraying device according to claim 1, characterized in that: The air supply mechanism (6) includes an air pump (12) installed on one side of the end of the spraying fixed frame (1). The air outlet of the air pump (12) is connected to a flexible air pipe (13) that extends through to the upper inner side of the spraying fixed frame (1). The air output of the air pump (12) is distributed to each hollowed-out air blowing block (5) via a branch main pipe (15).

5. The environmentally friendly glass bottle cold-end spraying device according to claim 4, characterized in that: The main branch pipe (15) has multiple branch connecting pipes on one side. The main branch pipe (15) is connected to the upper end of the air blower (5) on both sides of the perforated spray plate (2) through the branch connecting pipes to form a uniform downward airflow covering the width of the conveyor line.

6. The environmentally friendly glass bottle cold-end spraying device according to claim 1, characterized in that: The spraying fixing frame (1) is equipped with an adjusting cylinder (16) at its end. The piston rod of the adjusting cylinder (16) is fixed on both sides of the upper end face of the hollow spraying plate (2) to drive the conical nozzle (3) to customize the lifting stroke according to the height and gap of the glass bottle.

7. The environmentally friendly glass bottle cold-end spraying device according to claim 1, characterized in that: The spraying fixing frame (1) has L-shaped fixing plates (17) at the bottom of both sides of the outside. A manual locking rod (18) is threaded through one side of the fixing plate (17), and an anti-loosening block (19) is fixed at the other end of the manual locking rod (18) to achieve a detachable connection with the conveyor line.

8. The environmentally friendly glass bottle cold-end spraying device according to claim 2, characterized in that: The liquid supply tank (10) is fixed on the fixed mounting plate (17), and the outside of the liquid supply tank (10) is connected to the injection pipe (20) to achieve rapid liquid replenishment.

9. The environmentally friendly glass bottle cold-end spraying device according to claim 1, characterized in that: The conical nozzle (3) adopts a full conical atomizing nozzle with an atomization angle of 60°–120° and an average droplet diameter of ≤80μm, which is suitable for spraying on the surface of glass bottles.

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