A cooling device for tempering furnace for glass processing

Abstract

The invention discloses a cooling device for a tempering furnace for glass processing, and relates to the technical field of glass processing. The invention comprises a shell, an inner partition is fixedly installed inside the shell, a feeding area, a heating area and a cooling area are arranged between the outer circumferential surface of the inner partition and the shell, and a cavity is arranged between the upper surface of the inner partition and the shell; an air intake mechanism is used to transport cooling gas into the cavity; a connecting hole is opened on the inner partition, and the cavity is connected to the cooling area through the connecting hole; a central tube, the upper part of the central tube extends into the cavity, and the lower end of the central tube passes through the lower part of the inner partition; a supporting mechanism comprises a conduit, an end head, and a lifting block, one end of a plurality of conduits is connected to the central tube, and the end head is installed at the other end of the conduit. The invention synchronously cools the inner and outer walls of a glass cup blank, reduces the temperature difference between the inner and outer walls of the glass cup blank, thereby greatly reducing the phenomenon of cracks in the glass cup blank caused by the temperature difference, and significantly improving the yield rate of the glass cup.

Description

Technical Field

[0001] The invention relates to the technical field of glass processing, in particular to a tempering furnace cooling device for glass processing. Background Art

[0002] Tempering is a technical process that heats the glass physically and then rapidly cools it, so that compressive stress is formed on the surface of the cooled glass and tensile stress is formed inside the glass, thereby increasing the strength of the glass and turning ordinary annealed glass into tempered glass.

[0003] For some high-quality glass cups, the safety requirements are higher, so an additional tempering process is required to temper the formed glass cups, so that the strength and safety of the glass cups can be improved. At present, the glass cups are placed on the conveyor belt, transported to the tempering furnace by the conveyor belt, and heated by the heating mechanism in the furnace. As the conveyor belt continues to transport, the glass cups move to the cooling mechanism for cooling. In actual production, it is found that compared with the tempering of flat glass, air is blown from the top and bottom to achieve the purpose of uniform cooling. Due to the complex shape of the glass cups, and the general cover buckle on the conveyor belt when placed, the air in the inner cavity is not easy to circulate and the heat dissipation is poor. Therefore, the inner cavity and outer wall of the glass cup will produce a large temperature difference during the rapid cooling process. Inevitably, the temperature difference will lead to uneven deformation, which will eventually cause a part of the glass cups to be produced, reducing the yield rate of the glass cups. Summary of the invention

[0004] The object of the present invention is to provide a cooling device for a tempering furnace for glass processing to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a cooling device for a tempering furnace for glass processing, comprising:

[0006] A shell, wherein an inner partition is fixedly installed inside the shell, a feeding area, a heating area and a cooling area are arranged between the outer circumferential surface of the inner partition and the shell, and a cavity is arranged between the upper surface of the inner partition and the shell;

[0007] An air intake mechanism, which is used to deliver cooling gas into the cavity;

[0008] The inner partition is provided with a connecting hole, and the cavity is connected to the cooling area through the connecting hole;

[0009] A central tube, the upper portion of which extends into the cavity, and the lower end of which passes through to below the inner partition;

[0010] The supporting mechanism includes a conduit, an end head, and a lifting block. One end of a plurality of the conduits is connected to the central tube. The end head is installed at the other end of the conduit. The lifting block is slidably plugged on the end head. The glass cup blank cover is arranged outside the lifting block. An air outlet is opened on the end head.

[0011] A driving mechanism, which is used to drive the supporting mechanism to rotate around the central tube so that the glass blank passes through the loading area, the heating area and the cooling area in sequence;

[0012] When the glass blank moves to the heating area, the lifting block passively moves downward so that the lifting block blocks the conduit.

[0013] Preferably, a sealing sleeve is rotatably connected to the lower part of the central tube, a rotating sleeve is rotatably connected inside the sealing sleeve, and one end of the conduit passes through the interior of the rotating sleeve.

[0014] Preferably, the driving mechanism comprises a motor, and sprockets are provided on the output shaft and the rotating sleeve of the motor, and a pair of the sprockets are connected by a chain transmission.

[0015] Preferably, a connecting ring is further included, and a plurality of the catheters are fixedly mounted on the same connecting ring.

[0016] Preferably, it comprises a heating wire, and the heating wire is arranged in the heating area.

[0017] Preferably, a squeezing roller is rotatably connected in the heating area, and when the glass blank moves to the heating area, the squeezing roller squeezes the glass blank to move the lifting block downward to block the conduit.

[0018] Preferably, it also includes a sealing seat and a blocking door, a pair of the blocking doors are respectively arranged at the feed inlet and the discharge outlet of the heating area, and the sealing seat is arranged at the lower part of the heating area.

[0019] Preferably, the air intake mechanism includes a blower, a filter cartridge, a delivery pipe and a pressure divider. The blower and the delivery pipe are connected via the filter cartridge. One end of the delivery pipe passes through the shell and is inserted into the center pipe. The pressure divider is arranged on the delivery pipe.

[0020] Preferably, the pressure dividing part comprises a piston and an elastic member, the piston is slidably connected to the delivery pipe, and the elastic member applies a downward thrust to the piston.

[0021] Preferably, when the glass blank is in the heating area, the lower portion of the lifting block is inserted into the conduit to seal the conduit.

[0022] In the above technical scheme, the present invention provides a cooling device for a tempering furnace for glass processing, which supports a glass cup blank through a lifting block. When the glass cup blank is in a cooling area for cooling, air is transported into the central tube through an air intake mechanism. The air is transported to the inner cavity of the glass cup blank through the central tube and the conduit to cool the inner cavity of the glass cup blank. Simultaneously, when the pressure in the central tube reaches a certain value, a part of the air will overflow into the cavity, and this part of the air will flow from the cavity to the cooling area to cool the outer wall of the glass cup blank. In this way, the inner and outer walls of the glass cup blank are cooled synchronously, and the temperature difference between the inner and outer walls of the glass cup blank is reduced, which greatly reduces the phenomenon of cracks in the glass cup blank caused by the temperature difference, and significantly improves the yield rate of the glass cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is an overall schematic diagram of a cooling device for a glass processing tempering furnace of the present invention;

[0025] Figure 2 A cross-sectional view of a cooling device for a glass processing tempering furnace according to the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of an inner partition of a cooling device for a glass processing tempering furnace of the present invention;

[0027] Figure 4 This is a schematic diagram of the heating area structure of a cooling device for a glass processing tempering furnace of the present invention;

[0028] Figure 5 This is an overall bottom view of a cooling device for a glass processing tempering furnace according to the present invention;

[0029] Figure 6 This is a schematic diagram of the central tube structure of a cooling device for a glass processing tempering furnace of the present invention;

[0030] Figure 7 It is a cross-sectional view of a glass cup blank cover of a glass processing tempering furnace cooling device of the present invention when it is arranged on a supporting mechanism;

[0031] Figure 8 This is a structural schematic diagram of a lifting block of a cooling device for a glass processing tempering furnace of the present invention when it is in a cooling area;

[0032] Fig. 9This is a structural schematic diagram of a lifting block of a cooling device for a glass processing tempering furnace of the present invention when it is in a heating area;

[0033] Fig.10 The present invention is a schematic structural diagram of a pressure dividing portion of a cooling device for a glass processing tempering furnace.

[0034] Explanation of the reference numerals: 1. Shell; 2. Supporting mechanism; 21. Conduit; 211. Connecting ring; 22. End; 23. Air outlet; 24. Lifting block; 3. Air intake mechanism; 31. Blower; 32. Filter cartridge; 33. Delivery pipe; 34. Piston; 35. Elastic member; 4. Inner partition; 41. Connecting hole; 42. Cavity; 51. Feeding area; 52. Heating area; 521. Sealing seat; 522. Sealing door; 523. Extrusion roller; 524. Heating wire; 53. Cooling area; 6. Center tube; 61. Rotating sleeve; 62. Sealing sleeve; 7. Glass blank; 8. Motor. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] See also Figure 1-10 , a cooling device for a glass processing tempering furnace provided by an embodiment of the present invention comprises:

[0037] A shell 1, wherein an inner partition 4 is fixedly installed inside the shell 1, a feeding area 51, a heating area 52 and a cooling area 53 are arranged between the outer circumferential surface of the inner partition 4 and the shell 1, and a cavity 42 is arranged between the upper surface of the inner partition 4 and the shell 1;

[0038] An air intake mechanism 3, which is used to deliver cooling gas into the cavity 42;

[0039] The inner partition 4 is provided with a connecting hole 41, and the cavity 42 is connected to the cooling area 53 through the connecting hole 41;

[0040] A central tube 6, the upper portion of which extends into the cavity 42, and the lower end of which passes through the lower portion of the inner partition 4;

[0041] The supporting mechanism 2 includes a conduit 21, an end 22, and a lifting block 24. One end of a plurality of the conduits 21 is connected to the central tube 6. The end 22 is installed at the other end of the conduit 21. The lifting block 24 is slidably plugged on the end 22. The glass blank 7 is covered outside the lifting block 24. An air outlet 23 is opened on the end 22.

[0042] A driving mechanism, which is used to drive the supporting mechanism 2 to rotate around the central tube 6 so that the glass blank 7 passes through the loading area 51, the heating area 52 and the cooling area 53 in sequence;

[0043] When the glass blank 7 moves to the heating area 52 , the lifting block 24 passively moves downward so that the lifting block 24 blocks the conduit 21 .

[0044] In the embodiment of the present invention, the shell 1 and the inner partition 4 can form a heating area 52 and a cooling area 53, and a loading area 51 can be formed at the notch of the shell 1 and the inner partition 4. In the loading area 51, the supporting mechanism 2 is completely exposed to facilitate workers to load and unload the glass blank 7. When the glass blank 7 is transported to the heating area 52 by the supporting mechanism 2, the glass blank 7 is heated. As the supporting mechanism 2 continues to rotate, the glass blank 7 moves to the cooling area 53, where the temperature of the glass blank 7 drops rapidly to complete the tempering of the glass blank 7.

[0045] The cooling gas can be continuously fed in through the air inlet mechanism 3, and a part of the cooling gas will enter the cavity 42, and the cavity 42 is separated by the inner partition 4, and a connecting hole 41 is provided on the inner partition 4, and the connecting hole 41 is connected with the cooling area 53, so that the cooling gas will enter the cooling area 53 through the cavity 42 and the connecting hole 41. At this time, the glass blank 7 leaving the heating area 52 is in a high temperature state, and the high-temperature glass blank 7 suddenly enters the cooling area and contacts with the cooling gas, so that the glass blank 7 will be quickly cooled down to achieve the tempering of the glass blank 7;

[0046] When the glass blank 7 enters the cooling area 53, a portion of the cooling gas will be transported to the conduit 21 through the central tube 6, and the cooling gas will be ejected from the end 22, and the cooling gas will cool the inner wall of the glass blank 7. In this way, the inner and outer walls of the glass blank are cooled synchronously, and the temperature difference between the inner and outer walls of the glass blank is reduced, which greatly reduces the phenomenon of cracks in the glass blank caused by the temperature difference, and significantly improves the yield rate of the glass.

[0047] The entire supporting mechanism 2 is driven to rotate by the driving mechanism, so that the glass blank 7 placed on the supporting mechanism 2 can be moved along the loading area 51, the heating area 52 and the cooling area 53 in sequence, so that the heating and cooling of the glass blank 7 can be completed, so as to complete the tempering operation of the glass blank 7 in one cycle, and there is no need to stop the machine and the continuous production has strong continuity. After one cycle, the material can be discharged without unloading, and a second cycle can be performed. For some high-requirement glass blanks 7, tempering can be repeated for many times to improve product quality.

[0048] Since the heating area 52 needs to provide a high temperature, in order to prevent the support mechanism 2 from discharging cooling gas after moving to the support area 2, the lifting block 24 is movably arranged. In the cooling area 53 and the loading area 51, the pressure in the end 22 is relatively large. Even if the glass blank 7 is placed on the lifting block 24, gravity alone is not enough to make the lifting block 24 fall. Figure 8 As shown, in the cooling area 53, the lifting block 24 is at the highest point, and the cooling gas can be smoothly discharged to the inner wall of the glass blank 7, and enter the heating area 52. The heating area 52 is provided with a squeezing roller 523, and the squeezing roller 523 will apply a downward pressure to the glass blank 7, so that the lifting block 24 is switched to the position shown in the figure. Fig. 9 In the state shown, at this time, the lifting block 24 blocks the conduit 21, so that the cooling gas cannot be discharged from the heating area 52, which greatly avoids the heat dissipation of the heating area, and achieves the purpose of accelerating the heating of the glass cup blank 7 and saving energy and protecting the environment.

[0049] The supporting mechanism in the embodiment of the present invention also has the effect of automatic sorting. When the glass blank 7 is heated and rapidly cooled, cracks will appear on a part of the glass blank 7. In the traditional conveyor belt type transportation, even if there are cracks, the glass blank 7 will not break due to its relatively stable conveying state. Manual secondary sorting is required to screen the cracked glass blank 7. In the present invention, since the glass blank 7 is covered on the outside of the end head 22, a large amount of cooling gas in the end head 22 will generate a pressure on the glass blank 7 during the cooling process, so that the pressure on the inner wall of the glass blank 7 is greater than the external pressure of the glass blank 7. Once cracks appear in the glass blank 7 during the cooling process, the cracks will expand rapidly under the action of pressure until the glass blank 7 breaks. In this way, the cracked glass blank 7 can be automatically screened and removed during the cooling process.

[0050] In another embodiment of the present invention, please refer to Figure 5 , Figure 6 The lower part of the central tube 6 is rotatably connected with a sealing sleeve 62 , and the sealing sleeve 62 is rotatably connected with a rotating sleeve 61 . One end of the conduit 21 passes through the interior of the rotating sleeve 61 .

[0051] The catheter 21 and the rotating sleeve 61 are fixed together, so that when the rotating sleeve 61 rotates, it can synchronously drive the catheter 21 to rotate, while the central tube 6 can remain stationary.

[0052] In the embodiments of the present invention, please refer to Figure 5The driving mechanism includes a motor 8, and a sprocket is provided on the output shaft of the motor 8 and the rotating sleeve 61, and a pair of the sprockets are connected by a chain transmission. The motor 8 is fixed on the ground or the frame, and under the transmission action of the sprocket and the chain, the motor 8 can synchronously drive the rotating sleeve 61 to rotate when rotating, so that the rotation of the motor 8 can synchronously drive the supporting mechanism 2 to rotate accordingly, so that the glass cup blank 7 will move along the loading area 51, the heating area 52 and the cooling area 53.

[0053] See also Figure 5 , further comprising a connecting ring 211, and a plurality of the conduits 21 are fixedly mounted on the same connecting ring 211. The connecting ring 211 can connect a plurality of conduits 21 together, so that the stability between the plurality of conduits 21 is better.

[0054] In the embodiments of the present invention, please refer to Figure 3 , Figure 4 and Figure 5 , including a heating wire 524, which is arranged in the heating area 52. A squeezing roller 523 is rotatably connected in the heating area 52. When the glass blank 7 moves to the heating area 52, the squeezing roller 523 squeezes the glass blank 7 so that the lifting block 24 moves downward to block the conduit 21. It also includes a sealing seat 521 and a blocking door 522. A pair of the blocking doors 522 are respectively arranged at the feed port and the discharge port of the heating area 52, and the sealing seat 521 is arranged at the lower part of the heating area 52.

[0055] The sealing seat 521, the connecting ring 211 and the blocking door 522 are all arranged in the heating area 52. The three surround the heating area 52 to form a relatively closed space. A make way opening for the glass cup blank 7 to enter and exit is opened on the blocking door 52, so that the heating area 52 can form a relatively closed environment, reduce the high temperature in the heating area 52 to escape, and improve the insulation effect. In this way, the electric heating wire 524 is arranged in the heating area 52. When the glass cup blank 7 enters the heating area 52, its temperature will rise rapidly. As the supporting mechanism 2 continues to rotate, the glass cup blank 7 that has been heated will enter the cooling area 53, and the glass cup blank 7 will be quickly cooled to complete the tempering of the glass cup blank 7.

[0056] In the embodiments of the present invention, please refer to Figure 1 The air intake mechanism 3 includes a blower 31, a filter cartridge 32, a delivery pipe 33 and a pressure divider. The blower 31 and the delivery pipe 33 are connected via the filter cartridge 32. One end of the delivery pipe 33 passes through the shell 1 and is inserted into the center pipe 6. The pressure divider is arranged on the delivery pipe 33.

[0057] The blower 31 draws external air and delivers it to the filter cartridge 32. A filter screen is provided in the filter cartridge 32. The pumped gas is filtered through the filter screen. The gas passing through the filter cartridge 32 enters the delivery pipe 33. The delivery pipe 33 delivers cooling gas to the center tube 6. The cooling gas fills the center tube 6 and the cavity 42. The cooling gas in the cavity 42 flows into the cooling area 53, and the cooling gas in the center tube 6 flows into the conduit 21 and finally flows out from the end 22 to the inside of the glass cup blank 7. In this way, the inner and outer walls of the glass cup blank 7 are cooled simultaneously to reduce the temperature difference between the inner and outer walls of the glass cup blank 7. This greatly reduces the occurrence of cracks in the glass cup blank 7 due to the temperature difference, and significantly improves the yield rate of the glass cup.

[0058] In the embodiments of the present invention, please refer to Figure 2 and Fig.10 The pressure dividing part includes a piston 34 and an elastic member 35 . The piston 34 is slidably connected to the delivery pipe 33 , and the elastic member 35 applies a downward thrust to the piston 34 .

[0059] The piston 34 will seal the center tube 6 under the elastic force of the elastic member 35, and a part of the cooling gas in the center tube 6 will flow into the conduit 21. As the cooling gas is continuously delivered, it is difficult for the conduit 21 to completely discharge the cooling gas. In this way, after the pressure of the center tube 6 continues to increase, an upward thrust is applied to the piston 34. In this way, the piston 34 moves upward and separates from the center tube 6, so that a part of the cooling gas will flow into the cavity 42 and flow from the cavity 42 to cool the rest 53. In this way, when the glass cup blank 7 is subjected to convection cooling, the internal air pressure of the glass cup blank 7 will be greater than that of the outside, so that the heat dissipation in the narrow space inside is better, thereby reducing the temperature difference between the inside and the outside.

[0060] In the embodiment of the present invention, when the glass blank 7 is in the heating area 52, the lower part of the lifting block 24 is inserted into the conduit 21 to seal the conduit 21. When the glass blank 7 moves to the heating area 52, in order to prevent the heat in the heating area 52 from escaping, the conduit 21 is automatically sealed to prevent the cooling gas from being discharged from the conduit 21, thereby greatly reducing the heat loss in the heating area 52.

[0061] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cooling device for a tempering furnace for glass processing, characterized in that: include: A shell (1), wherein an inner partition (4) is fixedly installed inside the shell (1), a loading area (51), a heating area (52) and a cooling area (53) are provided between the outer circumferential surface of the inner partition (4) and the shell (1), and a cavity (42) is provided between the upper surface of the inner partition (4) and the shell (1); An air intake mechanism (3) for conveying cooling gas into the cavity (42); The inner partition (4) is provided with a communication hole (41), and the cavity (42) is connected to the cooling area (53) through the communication hole (41); A central tube (6), the upper portion of the central tube (6) extending into the cavity (42), and the lower end of the central tube (6) penetrating to below the inner partition (4); A supporting mechanism (2) comprises a conduit (21), an end head (22), and a lifting block (24); one end of a plurality of the conduits (21) is connected to the central tube (6); the end head (22) is mounted on the other end of the conduit (21); the lifting block (24) is slidably plugged into the end head (22); a glass cup blank (7) is covered outside the lifting block (24); and an air outlet (23) is provided on the end head (22); A driving mechanism, used for driving the supporting mechanism (2) to rotate around the central tube (6), so that the glass blank (7) passes through the loading area (51), the heating area (52) and the cooling area (53) in sequence; When the glass blank (7) moves to the heating area (52), the lifting block (24) passively moves downward, so that the lifting block (24) blocks the conduit (21).

2. A cooling device for a glass processing tempering furnace according to claim 1, characterized in that: The lower part of the central tube (6) is rotatably connected to a sealing sleeve (62), the sealing sleeve (62) is rotatably connected to a rotating sleeve (61), and one end of the conduit (21) passes through the interior of the rotating sleeve (61).

3. A cooling device for a glass processing tempering furnace according to claim 2, characterized in that: The driving mechanism comprises a motor (8), and sprockets are arranged on the output shaft of the motor (8) and the rotating sleeve (61), and a pair of the sprockets are connected by chain transmission.

4. A cooling device for a glass processing tempering furnace according to claim 1, characterized in that: It also comprises a connecting ring (211), and a plurality of the conduits (21) are fixedly mounted on the same connecting ring (211).

5. The cooling device for a glass processing tempering furnace according to claim 1, characterized in that: It comprises a heating wire (524), wherein the heating wire (524) is arranged in the heating area (52).

6. A cooling device for a glass processing tempering furnace according to claim 5, characterized in that: A squeezing roller (523) is rotatably connected in the heating area (52); when the glass blank (7) moves to the heating area (52), the squeezing roller (523) squeezes the glass blank (7) so that the lifting block (24) moves downward to block the conduit (21).

7. A cooling device for a glass processing tempering furnace according to claim 6, characterized in that: It also includes a sealing seat (521) and a blocking door (522), wherein a pair of the blocking doors (522) are respectively arranged at the feed inlet and the discharge outlet of the heating area (52), and the sealing seat (521) is arranged at the lower part of the heating area (52).

8. The cooling device for a glass processing tempering furnace according to claim 1, characterized in that: The air intake mechanism (3) comprises a blower (31), a filter cartridge (32), a delivery pipe (33) and a pressure dividing portion. The blower (31) and the delivery pipe (33) are connected via the filter cartridge (32). One end of the delivery pipe (33) passes through the shell (1) and is then inserted into the central pipe (6). The pressure dividing portion is arranged on the delivery pipe (33).

9. A cooling device for a glass processing tempering furnace according to claim 8, characterized in that: The pressure dividing part comprises a piston (34) and an elastic member (35); the piston (34) is slidably connected to the delivery pipe (33); and the elastic member (35) applies a downward thrust to the piston (34).

10. The cooling device for a glass processing tempering furnace according to claim 1, characterized in that: When the glass blank (7) is in the heating area (52), the lower part of the lifting block (24) is inserted into the conduit (21) to achieve blocking of the conduit (21).

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