Glass bottle annealing furnace

Abstract

The application discloses a glass bottle annealing furnace, which comprises a rack, a first conveying device and a furnace body arranged on the rack, the first conveying device is adapted to move and carry the bottle body through the furnace body, a second conveying device is arranged in the furnace body, a blocking piece is arranged on the second conveying device, the blocking piece is adapted to move downward and block the bottle mouth of the bottle body, and the moving and carrying directions of the first conveying device and the second conveying device are the same. When the bottle body enters the furnace body, the blocking piece moves downward and blocks the bottle mouth of the bottle body, so that the hot air flowing in the furnace body is insulated from the inside of the bottle body. Compared with the prior art, the blocking piece is arranged in the furnace body, and the bottle mouth of the bottle body is sealed through the blocking piece, so that dust in the air is not easy to fall into the inside of the bottle body, the glass bottle treated by the application has high cleanliness, and the yield of the produced glass bottle is high.

Description

Technical Field

[0001] This invention relates to the field of glass bottle manufacturing technology, and in particular, to a glass bottle annealing furnace. Background Technology

[0002] Annealing of glass bottles involves heating to eliminate internal stresses after molding, typically performed in a continuous belt annealing furnace at 550-650℃. The process includes three stages: heating, holding, and gradient cooling. Finally, inspection ensures the product is free of cracks and meets mechanical strength standards.

[0003] Currently, there are technical solutions that improve heating uniformity by using air circulation equipment such as blowers to create hot air flow within the heating zone of the annealing furnace. However, when annealing certain special glass bottles, such as those used in the processing of liquor bottles, there are specific requirements for the cleanliness of the bottle body. The aforementioned hot air flow can easily cause dust in the air to be carried by the airflow and fall into the bottle body, ultimately leading to a decrease in the yield of the produced glass bottles. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a glass bottle annealing furnace.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A glass bottle annealing furnace includes a frame, a first conveying device and a furnace body are provided on the frame, the first conveying device is adapted to transfer the bottle body through the furnace body, a second conveying device is provided in the furnace body, the second conveying device is provided with a sealing element, the sealing element is adapted to move downward and seal the bottle mouth, and the first conveying device and the second conveying device have the same transfer direction.

[0007] Preferably, both the first conveying device and the second conveying device are conveyor belts.

[0008] Preferably, the sealing component includes a sealing plate that extends laterally along the first conveying device. The second conveying device is also provided with an ejector, which is used to drive the sealing plate to be ejected and pressed against the bottle mouth.

[0009] Preferably, an elastic layer is provided on the bottom surface of the sealing plate.

[0010] Preferably, the sealing component includes a sealing plug, a connecting rope is provided on the sealing plug, the end of the connecting rope away from the sealing plug is connected to the second conveying device, and a plurality of sealing plugs are arranged laterally along the second conveying device; under the action of gravity, the sealing plug can fall downward into the bottle mouth of the bottle body.

[0011] Preferably, the second conveying device is rotatably provided with a rotating shaft, and the end of the connecting rope is fixed to the rotating shaft.

[0012] Preferably, a first gear is provided on the rotating shaft; a first toothed mechanism is provided at the front end of the second conveying device inside the furnace body, the first gear can mesh with the first toothed mechanism, and the connecting rope is extended from the rotating shaft; a second toothed mechanism is provided at the rear end of the second conveying device inside the furnace body, the first gear can mesh with the second toothed mechanism, and the connecting rope is wound up on the rotating shaft.

[0013] Preferably, the connecting rope is a tube, the sealing plug has a channel, the connecting rope is connected to the channel, and the rotating shaft is equipped with a pumping mechanism, which is adapted to pump airflow into the connecting rope.

[0014] Preferably, the furnace body includes a heating zone, a heat preservation zone, and a cooling zone sequentially along the transfer direction of the first conveying device, wherein a heating source is provided in the heating zone; the air pumping mechanism is adapted to pump air from the furnace body into the connecting rope; the transfer speed of the second conveying device is less than the transfer speed of the first conveying device, so that when the rotating shaft is located in the heating zone, the corresponding bottle is located in the heat preservation zone.

[0015] Preferably, the rotating shaft has a cavity, the pumping mechanism includes a fan blade rotatably disposed at the end of the rotating shaft, a second gear is disposed on the rotating shaft of the fan blade, and a third toothed mechanism is also disposed in the furnace body. The second gear can mesh with the third toothed mechanism and cause the fan blade to rotate. The connecting rope is connected to the cavity of the rotating shaft. A filter screen is also disposed in the cavity of the rotating shaft.

[0016] The beneficial effects of this invention are:

[0017] 1. When the bottle enters the furnace, the sealing element moves downward and seals the bottle opening, isolating the hot air flowing inside the furnace from the interior of the bottle. Compared with the prior art, this invention sets a sealing element inside the furnace and seals the bottle opening, making it difficult for dust in the air to fall into the bottle. Glass bottles annealed by this invention have a higher degree of cleanliness, resulting in a higher yield rate of produced glass bottles.

[0018] 2. The sealing component is a sealing plate that is vertically ejected via an ejector. Multiple bottles can be sealed in batches through the sealing plate, which has the advantages of simple structure and low cost.

[0019] 3. The sealing component is a sealing plug connected to the first conveying device via a connecting rope. The sealing plug can be used to seal individual bottles, which is especially suitable for bottles of different heights that are annealed in the same batch. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment;

[0021] Figure 2 for Figure 1 Enlarged view of part A;

[0022] Figure 3 This is a schematic diagram of the structure of the second embodiment;

[0023] Figure 4 This is a schematic diagram of the sealing blockage structure;

[0024] Figure 5 This is a schematic diagram of the rotating shaft.

[0025] Reference numerals: 1. Frame; 2. First conveying device; 3. Furnace body; 4. Second conveying device; 5. Sealing component; 6. Sealing plate; 7. Ejector; 8. Elastic layer; 9. Sealing plug; 10. Connecting rope; 11. Rotating shaft; 12. First gear; 13. First toothed mechanism; 14. Second toothed mechanism; 15. Channel; 16. Pumping mechanism; 17. Heating zone; 18. Insulation zone; 19. Cooling zone; 20. Heating source; 21. Cavity; 22. Fan blade; 23. Second gear; 24. Third toothed mechanism; 25. Filter screen. Detailed Implementation

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. 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.

[0027] like Figures 1 to 5 As shown, a glass bottle annealing furnace includes a frame 1, on which a first conveying device 2 and a furnace body 3 are mounted. The furnace body 3 is generally shaped like a dome, and the first conveying device 2 passes through it. Typically, a heating source 20, such as a gas-fired or electric heating source, is installed inside the furnace body 3, creating a high-temperature environment capable of heating the glass bottles. During the annealing process, the glass bottles to be annealed are placed on the front end of the first conveying device 2. As the first conveying device 2 moves the bottles, they enter and gradually exit the furnace body 3. After recooling, the internal stress of the glass bottles can be eliminated.

[0028] The term "front end" refers to the starting position of the bottle body when it is transferred via the first conveying device 2. In other words, the bottle body is actually transferred from the front end of the first conveying device 2 to its rear end. During this process, the bottle body passes through the furnace body 3 to achieve annealing treatment.

[0029] The furnace body 3 is usually equipped with air circulation equipment such as blowers to create a heating environment with hot air flow, which is especially helpful for the uniform heating of the bottle. However, this also brings a hidden danger: dust in the air can easily fall into the bottle under the airflow, making it impossible for the glass bottle to meet the required cleanliness.

[0030] In this disclosure, a second conveying device 4 is also provided inside the furnace body 3, and a sealing element 5 is also provided on the second conveying device 4. The sealing element 5 is adapted to move downwards, thereby sealing the bottle opening. It can be understood that, with the obstruction of the sealing element 5, the inside of the bottle is isolated from the furnace body 3, thus preventing dust from falling into the bottle. At the same time, the second conveying device 4 is also adapted to have the same transfer direction as the first conveying device 2, which helps the sealing element 5 and the bottle to remain essentially relatively stationary, making the sealing state of the bottle by the sealing element 5 more stable and reliable.

[0031] For example, both the first conveying device 2 and the second conveying device 4 can be configured as conveyor belts. By controlling the motors of the two conveyor belts to rotate in the same direction, the same transfer direction can be achieved.

[0032] See Figure 1 , Figure 2 In some embodiments, the sealing member 5 may preferably include a sealing plate 6, and the second conveying device 4 is further provided with an ejector 7. Under the ejection of the ejector 7, the sealing plate 6 can move vertically, that is, it can rise and fall relative to the bottle body. When the sealing plate 6 descends, its bottom surface presses against the bottle opening, thereby achieving a seal.

[0033] For example, the sealing plate 6 can be adapted to extend laterally along the first conveying device 2. This is because bottles are usually placed into the first conveying device 2 in an array, and the descent of the sealing plate 6 can simultaneously press and seal multiple bottles in the lateral direction. Furthermore, several sealing plates 6 can be arranged along the transfer direction of the second conveying device 4, and the cooperation of several sealing plates 6 can press and seal several bottles arranged in an array.

[0034] In a specific example, the ejector 7 can be an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder. In addition, an elastic layer 8 can preferably be provided on the bottom surface of the sealing plate 6. For example, the elastic layer 8 can be made of rubber. When the sealing plate 6 is pressed against the bottle mouth, the elastic layer 8 will provide cushioning, making the bottle less susceptible to impact damage.

[0035] After the glass bottle is about to be removed from the furnace body 3 or from the hot air convection area, the ejector 7 can drive the sealing plate 6 to rise again, and the bottle can be normally transferred to the next process via the first conveying device 2.

[0036] See Figures 3 to 5 Alternatively, the sealing element 5 may preferably include a sealing plug 9, and the sealing plug 9 is provided with a connecting rope 10, the end of the connecting rope 10 away from the sealing plug 9 being connected to the second conveying device 4. For example, the sealing plug 9 can be manually inserted into the mouth of the corresponding bottle by gravity, at which time the inside of the bottle will be isolated from the furnace body 3 by the sealing plug 9, making it difficult for dust to fall into the bottle.

[0037] The key difference from the example of sealing plate 6 is that the sealing plug 9 and the second conveying device 4 are connected in a relatively flexible manner via a connecting rope 10, and the sealing plug 9 is specifically designed to seal the bottle body, so each sealing plug 9 can adaptably seal the bottle body. For example, when the heights of the bottles undergoing annealing in the same batch are different, the slack left by the connecting rope 10 allows the sealing plug 9 to seal the bottle mouths of bottles of different heights.

[0038] Several sealing plugs 9 can be arranged laterally along the second conveying device 4, and several sealing plugs 9 can also be arranged along the transfer direction of the second conveying device 4. This makes the several sealing plugs 9 correspond to the several bottles arranged in an array on the first conveying device 2. It can be imagined that when a row of glass bottles enters the front end of the second conveying device 4, the sealing plugs 9 in the corresponding row will fall under the action of gravity until the sealing plugs 9 fall into the bottle mouth of the corresponding bottle. As the first conveying device 2 and the second conveying device 4 continue to transfer and operate, the above actions will occur sequentially, realizing the automatic sealing of the sealing plugs 9 with the corresponding bottles.

[0039] In a preferred embodiment, a rotating shaft 11 is rotatably mounted on the second conveying device 4, and the end of the connecting rope 10 is fixed to the rotating shaft 11. For example, the rotating shaft 11 can be rotated by a motor (not shown). At the front end of the second conveying device 4, the motor can rotate forward, thereby driving the connecting rope 10 to gradually extend from the rotating shaft 11, and the sealing plug 9 gradually descends and engages with the bottle opening; at the rear end of the second conveying device 4, the motor can rotate in reverse, thereby driving the connecting shaft to gradually rewind back onto the rotating shaft 11, at which time the sealing plug 9 will gradually rise to be pulled out from the bottle opening.

[0040] For example, the bottom of the sealing plug 9 can be constructed in a conical shape to help the bottom of the sealing plug 9 engage with the bottle opening of the bottle body. Then, guided by the conical surface, the sealing plug 9 will be more accurately inserted into the bottle opening to achieve sealing.

[0041] In other examples, a first gear 12 may be provided on the rotating shaft 11, and a first toothed mechanism 13 and a second toothed mechanism 14 may be provided at the front and rear ends of the second conveying device 4, respectively.

[0042] As the second conveying device 4 transfers the load, the rotating shaft 11 will gradually approach the first toothed mechanism 13 until the first gear 12 meshes with the first toothed mechanism 13. The transmission between the first gear 12 and the first toothed mechanism 13 can be referenced to the gear and rack transmission mechanism. That is, as the second conveying device 4 continues to transfer the load, the first gear 12 will drive the rotating shaft 11 to rotate, thereby causing the connecting rope 10 to gradually extend from the rotating shaft 11.

[0043] After the first gear 12 disengages from the first toothed mechanism 13, the sealing plug 9 will maintain the sealing state on the bottle opening, and the bottle will be gradually heated.

[0044] When the bottle is heated and about to be removed from the furnace body 3, the first gear 12 will mesh with the second toothed mechanism 14 under the transfer of the second conveying device 4. For example, the second toothed mechanism 14 can be set on the other side of the first gear 12 relative to the first toothed mechanism 13. At this time, the first gear 12 will reverse, so that the connecting rope 10 will gradually be wound around the rotating shaft 11, and the sealing plug 9 will be pulled out from the bottle mouth, and the bottle can be normally transferred out of the furnace body 3.

[0045] By winding up the connecting rope 10, when the sealing plug 9 is transferred from the rear end of the second conveying device 4 to its front end, the adjacent sealing plugs 9 are less likely to interfere with each other and expand, thus improving the reliability of this disclosure.

[0046] In some embodiments, the connecting rope 10 is preferably a tubular structure, and the sealing plug 9 is provided with a channel 15, which is connected to the connecting rope 10. In addition, the rotating shaft 11 is provided with an air pumping mechanism 16, which can pump airflow, such as hot air, into the connecting rope 10. Then, the hot air is guided by the connecting rope 10 and fills the inside of the bottle through the sealing plug 9.

[0047] For example, the air pumping mechanism 16 may include an air pump, a heating element, and a filter assembly (not shown). Driven by the air pump, air can pass through the pipe, the heating element, and the filter assembly, and then be pumped into the connecting rope 10. At this time, clean hot air will fill the inside of the bottle, so that the bottle can receive a more uniform heating effect inside and out.

[0048] In a preferred example, a temperature sensor (not shown) can be installed at the bottom of the sealing plug 9 to detect the temperature inside the bottle. This temperature is then compared with the temperature inside the furnace 3, thereby controlling the specific heating power of the heating element, such as an electric heating wire, to maintain the uniformity of heating inside and outside the bottle as much as possible.

[0049] The furnace body 3, along the transfer direction of the first conveying device 2, can specifically include a heating zone 17, a heat preservation zone 18, and a cooling zone 19 in sequence. For example, when the bottle is in the heating zone 17, the power of the heating element can be maintained to ensure that the temperature inside and outside the bottle is basically the same; when the bottle is in the heat preservation zone 18, the power of the heating element can be appropriately increased to compensate for the temperature drop caused by the bottle gradually moving away from the heating source 20; when the bottle is in the cooling zone 19, the supply of hot air to the inside of the bottle can be stopped, or the heating power of the heating element can be gradually reduced to allow the bottle to achieve a gradual temperature reduction.

[0050] In some embodiments, the heating source 20 is only located within the heating zone 17, and the air pumping mechanism 16 is specifically adapted to pump air from the furnace body 3 into the connecting rope 10. Unlike the examples described above, in this example, the air pumping mechanism 16 does not require a heating element, nor does it require a temperature sensor on the sealing plug 9; the reasons for this will be explained in detail below. Furthermore, in this example, the transfer speed of the second conveying device 4 is adapted to be less than the transfer speed of the first conveying device 2. This disclosure may have the following operating process:

[0051] 1. The bottle body enters the front end of the second conveyor 4 under the transfer of the first conveyor 2;

[0052] 2. The sealing plug 9 descends to seal the bottle opening. At this time, the air pumping mechanism 16 can pump the air in the heating zone 17 into the bottle, thereby improving the heating uniformity of the inner and outer sides of the bottle.

[0053] 3. As the first conveying device 2 and the second conveying device 4 further transfer the contents, the sealing plug 9 and the bottle enter the heat preservation zone 18, while the rotating shaft 11 remains in the heating zone 17. At this time, the air pumping mechanism 16 can still pump the air in the heating zone 17 into the bottle, thereby compensating for the temperature drop caused by the bottle gradually moving away from the heating source 20 and achieving the heat preservation effect.

[0054] 4. When the sealing plug 9 and the bottle enter the cooling zone 19, the rotating shaft 11 will disengage from the heating zone 17. At this time, the pumping mechanism 16 can pump airflow with a temperature lower than that inside the bottle into the bottle, thereby cooling the bottle. Furthermore, as the distance between the rotating shaft 11 and the heating zone 17 gradually increases with the transfer, the temperature of the airflow pumped into the bottle will gradually decrease, thus achieving gradient cooling of the bottle.

[0055] As can be seen, by cleverly controlling the speed difference between the first conveying device 2 and the second conveying device 4, the distance between the rotating shaft 11 and the corresponding bottle gradually increases, enabling the air pumping mechanism 16 on the rotating shaft 11 to pump air from the heating zone 17 into the bottle to achieve automatic heat preservation. Furthermore, the air pumping mechanism 16 is equipped with a filter component, which is significantly different from the situation where air freely fills the bottle, making it less likely for dust to fall into the bottle.

[0056] For example, the longitudinal spacing of the bottles can be arranged according to the speed difference ratio between the first conveying device 2 and the second conveying device 4. Assuming that the speed of the first conveying device 2 is 1.1 times that of the second conveying device 4, then the ratio of the longitudinal spacing of the bottles to the longitudinal spacing of the rotating shaft 11 is also 1.1:1. In this case, if the rotating shaft 11 moves 1 unit distance per unit time, the bottles compensate for the faster transfer speed of the first conveying device 2 by increasing the spacing, so that the bottles and the rotating shaft 11 can smoothly engage at the front end of the second conveying device 4.

[0057] In a specific example, a cavity 21 is provided inside the rotating shaft 11, and the pumping mechanism 16 includes a fan blade 22 rotatably disposed at the end of the rotating shaft 11. A second gear 23 is also provided on the rotating shaft 11 of the fan blade 22, and a third toothed mechanism 24 is correspondingly provided inside the furnace body 3. As the second conveying device 4 transfers the rotating shaft 11, the second gear 23 meshes with the third toothed mechanism 24, thereby driving the fan blade 22 to rotate. Correspondingly, the connecting rope 10 is adapted to be connected to the cavity 21 of the rotating shaft 11. At this time, the airflow pumped into the cavity 21 via the fan blade 22 will be pumped into the inside of the bottle.

[0058] For example, a filter screen 25 can be installed inside the cavity 21 of the rotating shaft 11 to further prevent dust from entering the bottle.

[0059] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A glass bottle annealing furnace comprising a frame (1) on which a first conveying device (2) and a furnace body (3) are arranged, the first conveying device (2) being adapted to move the bottle bodies through the furnace body (3), characterized in that: The second conveying device (4) is provided in the furnace body (3), and a sealing member (5) is arranged on the second conveying device (4), the sealing member (5) is adapted to be capable of moving downward and sealing the bottle opening of the bottle body, the moving directions of the first conveying device (2) and the second conveying device (4) are the same; The sealing member (5) comprises a sealing plug (9), a connecting rope (10) is arranged on the sealing plug (9), the end of the connecting rope (10) away from the sealing plug (9) is connected with the second conveying device (4), and a plurality of sealing plugs (9) are arranged along the transverse direction of the second conveying device (4); Under the action of gravity, the sealing plug (9) can drop downward into the bottle opening of the bottle body; A rotating shaft (11) is rotatably arranged on the second conveying device (4), and the end of the connecting rope (10) is fixed with the rotating shaft (11); The connecting rope (10) is a pipe body, a channel (15) is formed in the sealing plug (9), the connecting rope (10) is communicated with the channel (15), and a pump mechanism (16) is arranged on the rotating shaft (11); The furnace body (3) comprises, in sequence along the moving direction of the first conveying device (2), a heating zone (17), a heat preservation zone (18) and a cooling zone (19), wherein a heating source (20) is arranged in the heating zone (17); The pump mechanism (16) is adapted to pump the air in the furnace body (3) into the connecting rope (10); The moving speed of the second conveying device (4) is less than the moving speed of the first conveying device (2), so that when the rotating shaft (11) is located in the heating zone (17), the corresponding bottle body is located in the heat preservation zone (18); The rotating shaft (11) has a cavity (21), the pump mechanism (16) comprises a fan blade (22) rotatably arranged at the end of the rotating shaft (11), a second gear (23) is arranged on the rotating shaft (11) of the fan blade (22), a third gear mechanism (24) is further arranged in the furnace body (3), the second gear (23) can be engaged with the third gear mechanism (24), so that the fan blade (22) rotates, and the connecting rope (10) is communicated with the cavity (21) of the rotating shaft (11); A filter screen (25) is further arranged in the cavity (21) of the rotating shaft (11).

2. The glass bottle lehr of claim 1, characterized by: A first gear (12) is arranged on the rotating shaft (11); A first gear mechanism (13) is arranged at the front end of the second conveying device (4) in the furnace body (3), the first gear (12) can be engaged with the first gear mechanism (13), so that the connecting rope (10) is unfolded from the rotating shaft (11); A second gear mechanism (14) is arranged at the rear end of the second conveying device (4) in the furnace body (3), the first gear (12) can be engaged with the second gear mechanism (14), so that the connecting rope (10) is wound on the rotating shaft (11).

Images