Suspension conveying device and tempered glass production line

Abstract

The utility model discloses a suspension conveying device and a toughened glass production line, the suspension conveying device is used for conveying glass to pass through the inside of a toughening furnace for physical toughening, the suspension conveying device comprises a conveying flat plate arranged in the toughening furnace, and an airflow chamber is arranged in the conveying flat plate; a plurality of airflow ports communicated with the airflow chamber are formed in the upper end face of the conveying flat plate at intervals in the conveying direction of the glass; an air inlet part communicated with the airflow cavity is arranged at the input end of the conveying flat plate, and the air inlet part is used for conveying high-pressure air into the airflow cavity; an air outlet part is arranged at the output end of the conveying flat plate, communicates with the airflow cavity and is used for extracting air, close to the output end of the conveying flat plate, in the airflow cavity; when the suspension conveying device is in a conveying state, pressure difference formed in the conveying direction of the glass drives the glass to move in a suspension mode. According to the utility model, air flow is utilized to lift glass for suspension conveying, so that the physical tempering quality and the yield of the glass with the thickness of 1.5-2mm are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tempered glass production, in particular to a suspension conveying device and a tempered glass production line. Background Art

[0002] Tempered glass is glass with compressive stress on the surface, also known as strengthened glass. Tempered glass is a prestressed glass. In order to increase the strength of the glass, two methods are usually used, one is physical tempering and the other is chemical tempering.

[0003] The principle of physical tempering is to transport the glass into the tempering furnace, heat it to a suitable temperature, and then quickly cool it. The surface of the glass will shrink sharply, and compressive stress will be generated on the surface of the glass. The middle layer of the glass will produce tensile stress because it has no time to shrink, thereby enabling the glass to obtain high strength.

[0004] The principle of chemically tempered glass is to change the surface structure and molecular composition of the glass through ion diffusion. At high temperature (350℃ to 750℃), the glass is immersed in high-temperature molten salt, and the alkali ions in the glass and the alkali ions in the molten salt are exchanged with each other, resulting in a "squeezing" phenomenon, which causes the molecules on the surface of the glass to produce compressive stress and increase the strength of the glass.

[0005] At present, glass with a thickness of more than 2 mm can meet the requirements of building use through physical tempering, which is low-cost and can be produced on a large scale. Tempered glass with a thickness of less than 1 mm is produced on a large scale by chemical tempering, which is mainly used in special glass. The material application performance requirements are high, the manufacturing cost is high, and it is suitable for scenes with heterogeneous materials or high performance requirements.

[0006] If the glass with a thickness of 1.5 mm to 2 mm is tempered by chemical method, it takes a long time and has high cost, and it is difficult to promote its application. Therefore, the glass with a thickness of 1.5 mm to 2 mm is usually tempered by physical method. Most of the traditional physical tempering technologies for glass with a thickness of 1.5 mm to 2 mm use transmission rollers to transport the glass in the tempering furnace for tempering. However, the transmission roller conveying method is prone to burns and sticking to the glass, and it is easy to cause the glass to deform during the heating process, affecting the tempering quality and resulting in low yield. Utility Model Content

[0007] Therefore, the technical problem to be solved by the utility model is to overcome the defects of the prior art that glass with a thickness of 1.5 mm to 2 mm is transported in a tempering furnace for physical tempering by using transmission rollers, which easily causes burns and sticking to the rollers to the glass, and easily causes the glass to deform during the heating process, affecting the tempering quality and resulting in a low yield, thereby providing a suspended conveying device and a tempered glass production line.

[0008] According to the first aspect of the utility model, a suspension conveying device is provided, which is used to convey glass with a thickness of 1.5 mm to 2 mm through a tempering furnace for physical tempering. The suspension conveying device includes:

[0009] A conveying plate, used for being arranged in the tempering furnace, wherein an airflow chamber is arranged in the conveying plate, and a plurality of airflow openings are arranged at intervals along the conveying direction of the glass on the upper end surface of the conveying plate in the height direction, and the airflow openings are communicated with the airflow chamber;

[0010] An air inlet, disposed at the input end of the conveying plate, the air inlet being connected to the airflow chamber and used for conveying high-pressure gas into the airflow chamber;

[0011] An air outlet portion, disposed at the output end of the conveying plate, the air outlet portion is connected to the air flow chamber and is used to extract the gas in the air flow chamber close to the output end of the conveying plate;

[0012] When the suspension conveying device is in a conveying state, the pressure difference formed along the conveying direction of the glass drives the glass to move in suspension.

[0013] A suspension conveying device according to the utility model has at least the following technical effects:

[0014] A plurality of air flow openings are arranged on the upper end surface of the conveying plate along the conveying direction of the glass, and an air inlet and an air outlet connected to the air flow chamber are respectively arranged at the input end and the output end of the conveying plate; in the process of conveying the glass with a thickness of 1.5 mm to 2 mm through the interior of the tempering furnace for physical tempering, the air inlet is started to input high-pressure gas into the air flow chamber and spray it into the interior of the tempering furnace through the air flow opening near the input end of the conveying plate to suspend and hold up the glass, and at the same time, the air outlet is started to draw the gas inside the tempering furnace from the air flow opening near the output end of the conveying plate into the air flow chamber and draw it out through the air outlet, so that the pressure inside the tempering furnace near the input end of the conveying plate is greater than the pressure near the output end of the conveying plate. The glass is strong, so that the space above the conveying plate in the height direction generates a pressure difference along the conveying direction of the glass, and then the glass is suspended and conveyed through the interior of the tempering furnace for physical tempering under the force generated by the pressure difference. During the entire physical tempering process, the conveying plate and the glass do not come into contact, which neither pollutes the lower surface of the glass nor effectively avoids the phenomenon of roller sticking. In addition, the airflow is used to lift the glass for suspension transportation, so that the glass is not easily deformed during the heating process, and the tempering is more uniform, ensuring that the strength of the tempered glass with a thickness of 1.5 mm to 2 mm reaches 80MPa to 130MPa, which meets the needs of architectural applications and improves the physical tempering quality and yield rate of the glass with a thickness of 1.5 mm to 2 mm.

[0015] Preferably, it also includes a blowing plate, which is used to be arranged in the tempering furnace and is located directly above the conveying plate in the height direction; the lower end surface of the blowing plate in the height direction is provided with a plurality of blowing ports arranged at intervals along the conveying direction of the glass, and the blowing ports are connected with the interior of the blowing plate; the interior of the blowing plate is connected with a blowing part, and the blowing part is used to convey cooling air to the interior of the blowing plate; the air inlet part is used to convey high-pressure cold air into the airflow chamber, and the wind pressure of the high-pressure cold air is greater than the wind pressure of the cooling air.

[0016] Preferably, the air intake portion comprises an air intake pipe, the air intake pipe is communicated with the air flow chamber, and a first valve for controlling the on-off of the air intake pipe is arranged on the air intake pipe;

[0017] And / or, the air outlet portion comprises an air outlet pipe, the air outlet pipe is communicated with the air flow chamber, and a second valve for controlling the opening and closing of the air outlet pipe is arranged on the air outlet pipe;

[0018] And / or, a suspended airflow nozzle is embedded in the airflow port, and the suspended airflow nozzle is arranged along the height direction.

[0019] Preferably, the air outlet end of the air inlet is connected to the lower end surface of the conveying plate in the height direction;

[0020] And / or, the air inlet end of the air outlet is connected to the lower end surface of the conveying plate in the height direction;

[0021] Also included is an input roller assembly, which is used to be flush with the entrance end of the tempering furnace and is used to transport the glass into the tempering furnace;

[0022] And / or, it also includes an output roller assembly, which is used to be flush with the outlet end of the tempering furnace and to transport the glass to the outside of the tempering furnace.

[0023] Preferably, the upper end position of the input roller assembly along the height direction is higher than the upper end position of the output roller assembly along the height direction, and the upper end position of the output roller assembly along the height direction is higher than the upper end position of the conveying plate along the height direction.

[0024] Preferably, a transition portion is provided on a side of the conveying flat plate facing the output roller assembly, and the air flow opening is not provided on an upper end surface of the transition portion in the height direction.

[0025] Preferably, the conveying plate and the transition portion are integrally provided.

[0026] According to a second aspect of the present invention, a tempered glass production line is provided, comprising a tempering furnace and a suspension conveying device, wherein the suspension conveying device adopts the suspension conveying device provided in the first aspect.

[0027] A tempered glass production line according to the utility model has at least the following technical effects:

[0028] A plurality of air flow openings are arranged on the upper end surface of the conveying plate in the suspension conveying device along the conveying direction of the glass, and an air inlet and an air outlet connected to the air flow chamber are respectively arranged at the input end and the output end of the conveying plate; in the process of conveying the glass with a thickness of 1.5 mm to 2 mm through the interior of the tempering furnace for physical tempering, the air inlet is started to input high-pressure gas into the air flow chamber and spray it into the interior of the tempering furnace through the air flow opening near the input end of the conveying plate to suspend and hold up the glass, and at the same time, the air outlet is started to draw the gas inside the tempering furnace from the air flow opening near the output end of the conveying plate into the air flow chamber and draw it out through the air outlet, so that the pressure inside the tempering furnace near the input end of the conveying plate is greater than the pressure near the output end of the conveying plate, thereby making the pressure at the conveying plate A pressure difference is generated in the space above the height direction along the conveying direction of the glass, so that the glass is suspended and conveyed through the interior of the tempering furnace for physical tempering under the force generated by the pressure difference. During the whole process of using the tempered glass production line to physically temper the glass with a thickness of 1.5 mm to 2 mm, the conveying plate does not contact the glass, which neither pollutes the lower surface of the glass nor effectively avoids the roller sticking phenomenon; and the airflow is used to lift the glass for suspension conveying, so that the glass is not easily deformed during the heating process, and the tempering is more uniform, ensuring that the strength of the glass with a thickness of 1.5 mm to 2 mm after physical tempering reaches 80MPa to 130MPa, meeting the needs of architectural applications and improving the physical tempering quality and yield rate of the glass with a thickness of 1.5 mm to 2 mm.

[0029] Preferably, it further comprises a cooling section, which is located at the output end of the tempering furnace, and the gas outlet end of the gas outlet part is connected to the cooling section.

[0030] Preferably, the cooling section is connected to a delivery pipe, the gas outlet end of the delivery pipe is connected to a gas heating component, the gas outlet end of the gas heating component is connected to the interior of the tempering furnace and is used to heat the room temperature glass entering the inlet end of the tempering furnace.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 This is a schematic diagram of the main structure of a suspension conveying device of this embodiment applied to a tempering furnace;

[0034] Figure 2 for Figure 1 Schematic diagram of the side structure.

[0035] Description of reference numerals:

[0036] 1- Glass;

[0037] 2-Tempering furnace;

[0038] 3- conveying plate, 31- suspension air flow nozzle;

[0039] 41-intake pipe, 42-first valve;

[0040] 51-exhaust pipe, 52-second valve;

[0041] 6- Input roller assembly;

[0042] 7- output roller assembly;

[0043] 8-blowing plate, 81-blowing port. DETAILED DESCRIPTION

[0044] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0048] Embodiment 1

[0049] like Figure 1 and Figure 2 The present embodiment shows a suspension conveying device, which is used to convey glass 1 with a thickness of 1.5 mm to 2 mm through a tempering furnace 2 for physical tempering. The suspension conveying device includes a conveying plate 3, which is used to be arranged in the tempering furnace 2. An airflow chamber is provided in the conveying plate 3. The upper end surface of the conveying plate 3 along the height direction is provided with a plurality of airflow openings spaced along the conveying direction of the glass 1, and the airflow openings are connected to the airflow chamber; an air inlet is provided at the input end of the conveying plate 3, which is connected to the airflow chamber and used to convey high-pressure gas into the airflow chamber; an air outlet is provided at the output end of the conveying plate 3, which is connected to the airflow chamber and used to extract the gas in the airflow chamber near the output end of the conveying plate 3; when the suspension conveying device is in a conveying state, the pressure difference formed along the conveying direction of the glass 1 drives the glass 1 to move in suspension. It can be understood that the height direction and the conveying direction of the glass 1 described in the present embodiment refer to Figure 1 The height direction and conveying direction.

[0050] The suspension conveying device of this embodiment is provided with a plurality of air flow openings on the upper end surface of the conveying plate 3 along the conveying direction of the glass 1, and an air inlet and an air outlet connected to the air flow chamber are respectively provided at the input end and the output end of the conveying plate 3; in the process of conveying the glass 1 with a thickness of 1.5 mm to 2 mm through the interior of the tempering furnace 2 for physical tempering, the air inlet is started to input high-pressure gas into the air flow chamber and spray it into the interior of the tempering furnace 2 through most of the air flow openings close to the input end of the conveying plate 3 to suspend and hold up the glass 1, and at the same time, the air outlet is started to draw the gas inside the tempering furnace 2 into the air flow chamber from a few of the air flow openings close to the output end of the conveying plate 3 and draw it out through the air outlet, so that the pressure inside the tempering furnace 2 close to the input end of the conveying plate 3 is greater than the pressure close to the output end of the conveying plate 3 (i.e. The pressure inside the tempering furnace 2 gradually decreases along the conveying direction of the glass 1), so that a pressure difference is generated in the space above the conveying plate 3 along the height direction along the conveying direction of the glass 1, and then the glass 1 is suspended and conveyed through the interior of the tempering furnace 2 under the force generated by the pressure difference for physical tempering. During the entire physical tempering process, the conveying plate 3 and the glass 1 do not come into contact, which neither pollutes the lower surface of the glass 1 nor effectively avoids the roller sticking phenomenon; and the glass 1 is suspended and conveyed by air flow, so that the glass 1 is not easily deformed during the heating process, and the tempering is more uniform, ensuring that the strength of the tempered glass 1 with a thickness of 1.5 mm to 2 mm reaches 80 MPa to 130 MPa, meeting the needs of architectural applications, and improving the physical tempering quality and yield rate of the glass 1 with a thickness of 1.5 mm to 2 mm.

[0051] It should be noted that although a small amount of gas inside the tempering furnace 2 is drawn into the air flow chamber from the air flow port near the output end of the conveying plate 3 and is drawn out through the air outlet, when the glass 1 is conveyed to the output end of the conveying plate 3, the air flow can still lift the glass 1 to float without contacting the conveying plate 3.

[0052] In specific applications, the aperture size and number of the air flow ports are reasonably increased or decreased according to the actual size and actual thickness (1.5 mm to 2 mm thick) of the glass 1 to be tempered; the injection amount of the high-pressure gas from the air flow ports is appropriately adjusted according to the actual size and actual thickness (1.5 mm to 2 mm thick) of the glass 1 to be tempered.

[0053] In some embodiments of the utility model, the suspended conveying device also includes a blowing plate 8, which is used to be arranged in the tempering furnace 2 and is located directly above the conveying plate 3 in the height direction; the lower end surface of the blowing plate 8 in the height direction is provided with a plurality of blowing ports 81 arranged at intervals along the conveying direction of the glass 1, and the blowing ports 81 are connected to the interior of the blowing plate 8; the interior of the blowing plate 8 is connected with a blowing portion, and the blowing portion is used to convey cooling air to the interior of the blowing plate 8; the air inlet portion is used to convey high-pressure cold air into the airflow chamber, and the wind pressure of the high-pressure cold air is greater than the wind pressure of the cooling air. High-pressure cold air and cooling air are blown toward the upper surface and lower surface of the glass 1 through the air blowing port 81 and the air flow port, respectively. When the high-pressure cold air contacts the high-temperature lower surface of the glass 1, local stress is formed on the lower surface of the glass 1, and when the cooling air contacts the high-temperature upper surface of the glass 1, local stress is formed on the upper surface of the glass 1, thereby ensuring the physical toughening effect of the glass 1 with a thickness of 1.5 mm to 2 mm. At the same time, because the cooling air and the high-pressure cold air are uniformly treated through the multiple air blowing ports 81 and the multiple air flow ports, respectively, the cooling air and the high-pressure cold air are blown toward the lower surface of the glass 1 in a fine and dense manner. The upper surface and the lower surface of the glass 1 are relatively relatively flat, so compared with blowing the cooling air and the high-pressure cold air directly to the upper surface and the lower surface of the glass 1 through the large-area air outlet, the suspension conveying device of this embodiment can prevent the cooling air and the high-pressure cold air from blowing through the glass 1 with a thickness of 1.5 mm to 2 mm, ensuring that local stress is formed on the upper surface and the lower surface of the glass 1, respectively, thereby ensuring that the strength of the glass 1 with a thickness of 1.5 mm to 2 mm after tempering reaches 80 MPa to 130 MPa, meeting the requirements of architectural applications, and improving the physical tempering quality and yield rate of the glass 1 with a thickness of 1.5 mm to 2 mm. In addition, by setting the wind pressure of the high-pressure cold air ejected through the air flow port to be less than the wind pressure of the cooling air blown through the air blowing port 81, it is ensured that in the process of conveying the glass 1 through the interior of the tempering furnace 2 for physical tempering, the air flow always lifts the glass 1 for suspension conveying without contacting the conveying plate 3.

[0054] It should be noted that the air blowing part uses a blower currently available on the market.

[0055] In order to better ensure that the lifted glass 1 is suspended and transported without contacting the conveying plate 3 without blowing through the glass 1 with a thickness of 1.5 mm to 2 mm, specifically, the wind pressure of the high-pressure cold air ejected from the air flow outlet is 0.12 MPa to 0.15 MPa, and the wind pressure of the cooling air blown out from the air outlet 81 is 0.07 MPa to 0.09 MPa.

[0056] It can be understood that the high-pressure cold air ejected from the air flow port and the cooling air blown out from the air blowing port 81 are both cold air at a temperature of 10° C. to 25° C.

[0057] In specific applications, the gas outlet of the gas outlet part can also be directly connected to the external heating component, and a filter screen is provided at the connection point between the two, so as to recycle the heat in the high-temperature gas extracted from the tempering furnace 2 and reduce energy waste.

[0058] In a specific application, the air inlet end of the air inlet part can be connected to a high-pressure air supply source; and the air outlet end of the air outlet part can be connected to an air pump.

[0059] In order to better eject the high-pressure gas input into the air flow chamber into the interior of the tempering furnace 2 through most of the air flow openings close to the input end of the conveying plate 3 to suspend and hold up the glass 1, and to better draw the gas inside the tempering furnace 2 into the air flow chamber from a few air flow openings close to the output end of the conveying plate 3 and draw it out through the air outlet, so as to better ensure that the glass 1 is suspended and conveyed through the interior of the tempering furnace 2 for physical tempering under the force generated by the pressure difference, specifically, a suspended air flow nozzle 31 is embedded in the air flow opening, and the suspended air flow nozzle 31 is arranged along the height direction, and the upper end position of the suspended air flow nozzle 31 is higher than the upper end position of the conveying plate 3.

[0060] like Figure 1 As shown, in some embodiments of the utility model, the air intake part includes an air intake pipe 41, the air intake pipe 41 is connected to the air flow chamber, and the air intake pipe 41 is provided with a first valve 42 for controlling the opening and closing of the air intake pipe 41. The first valve 42 realizes the opening and closing control of the air intake pipe 41. After the physical tempering operation of the glass 1 with a thickness of 1.5 mm to 2 mm is completed, by controlling the first valve 42 to switch to a closed state, the air intake part can be conveniently and reliably switched to a cut-off state. Specifically, the first valve 42 is set as a control regulating valve, so as to flexibly adjust the injection amount of high-pressure gas injected from the air flow port to the inside of the tempering furnace 2 per unit time according to the actual size and actual thickness (1.5 mm to 2 thickness) of the glass 1 to be tempered, so as to ensure that the glass 1 of the corresponding size and thickness is suspended and transported through the inside of the tempering furnace 2 under the force generated by the pressure difference for physical tempering.

[0061] like Figure 1As shown, in some embodiments of the utility model, the gas outlet portion includes a gas outlet pipe 51, the gas outlet pipe 51 is connected to the gas flow chamber, and the gas outlet pipe 51 is provided with a second valve 52 for controlling the opening and closing of the gas outlet pipe 51. The second valve 52 realizes the opening and closing control of the gas outlet pipe 51. After the physical tempering operation of the glass 1 with a thickness of 1.5 mm to 2 mm is completed, the gas outlet portion can be conveniently and reliably switched to the gas cut-off state by controlling the second valve 52 to switch to the closed state. Specifically, the second valve 52 is set as a control regulating valve, so as to flexibly adjust the discharge volume of the gas inside the tempering furnace 2 from the gas outlet near the output end of the conveying plate 3 into the gas flow chamber and through the gas outlet portion in a unit time according to the actual size and actual thickness of the glass 1 to be tempered (1.5 mm to 2 thickness), so as to ensure that the glass 1 of the corresponding size and thickness is suspended and transported through the interior of the tempering furnace 2 under the force generated by the pressure difference for physical tempering.

[0062] like Figure 1 As shown, in some embodiments of the utility model, the outlet end of the air inlet is connected to the lower end surface of the conveying plate 3 in the height direction. The direction of the high-pressure gas output through the outlet end of the air inlet is substantially consistent with the direction of the high-pressure gas ejected through the air flow port near the input end of the conveying plate 3, so that the high-pressure gas is smoothly input into the air flow chamber and ejected into the interior of the tempering furnace 2 through the air flow port near the input end of the conveying plate 3 to suspend and hold up the glass 1.

[0063] like Figure 1 As shown, in some embodiments of the utility model, the air inlet end of the air outlet is connected to the lower end surface of the conveying plate 3 in the height direction. The direction of the high-temperature gas drawn into the air flow chamber from the air outlet near the output end of the conveying plate 3 is substantially consistent with the direction of the high-temperature gas input from the air inlet end of the air outlet, so that the gas inside the tempering furnace 2 is drawn into the air flow chamber from the air outlet near the output end of the conveying plate 3 and drawn out through the air outlet, so that the pressure inside the tempering furnace 2 near the input end of the conveying plate 3 is greater than the pressure near the output end of the conveying plate 3, so that the glass 1 is suspended and transported through the interior of the tempering furnace 2 by air flow.

[0064] like Figure 1 As shown, in some embodiments of the utility model, the suspension conveying device further includes an input roller assembly 6, which is used to be flush with the entrance end of the tempering furnace 2 and is used to convey the glass 1 into the tempering furnace 2. The input roller assembly 6 facilitates the automatic conveyance of the glass 1 to be tempered into the tempering furnace 2 for physical tempering treatment, further reducing the labor intensity of the operator. At the same time, the input roller assembly 6 can also apply an inertial force to the glass 1 to be tempered along the conveying direction, so as to ensure that the glass 1 is lifted by the airflow and smoothly conveyed through the interior of the tempering furnace 2 for physical tempering.

[0065] like Figure 1 As shown, in some embodiments of the utility model, the suspension conveying device further includes an output roller assembly 7, which is used to be flush with the outlet end of the tempering furnace 2 and is used to convey the glass 1 to the outside of the tempering furnace 2. The output roller assembly 7 facilitates the glass 1 that has completed the physical tempering treatment to be received and automatically conveyed to the outside of the tempering furnace 2, further reducing the labor intensity of the operator. At the same time, the output roller assembly 7 can also apply a torque to the glass 1 that has completed the physical tempering treatment to move along the conveying direction, so as to smoothly and automatically convey the glass 1 that has completed the physical tempering treatment to the outside of the tempering furnace 2.

[0066] like Figure 1 As shown, in some embodiments of the utility model, the upper end position of the input roller assembly 6 along the height direction is higher than the upper end position of the output roller assembly 7 along the height direction, and the upper end position of the output roller assembly 7 along the height direction is higher than the upper end position of the conveying plate 3 along the height direction. Taking into account that the glass 1 is suspended and transported through the interior of the tempering furnace 2 for physical tempering treatment under the force generated by the pressure difference, a small amount of gas inside the tempering furnace 2 is drawn into the air flow chamber from a few air flow ports close to the output end of the conveying plate 3 and is drawn out through the air outlet, so that the lifting force of the air flow at the output end of the conveying plate 3 on the glass 1 is slightly smaller than the dragging force of the air flow at the input end of the conveying plate 3 on the glass 1, so that the height position of the glass 1 will gradually and slowly decrease along the conveying direction of the glass 1, that is, the height position of the glass 1 above the input end of the conveying plate 3 is higher than the height position of the glass 1 above the output end of the conveying plate 3; in this embodiment, the upper end position of the output roller assembly 7 in the height direction is set lower than the upper end position of the input roller assembly 6 in the height direction, so as to receive the glass 1 that has completed the physical tempering treatment and automatically transport it to the outside of the tempering furnace 2.

[0067] like Figure 1 As shown, in some embodiments of the utility model, a transition portion is provided on one side of the conveying plate 3 facing the output roller assembly 7, and the air flow port is not provided on the upper end surface of the transition portion in the height direction. The transition portion provides a transition cooling path for the glass 1 that has completed the physical tempering treatment before it is conveyed out of the tempering furnace 2, so as to play a role in cooling the glass 1 before it is conveyed out of the tempering furnace 2, effectively avoiding the glass 1 from bursting, and improving the physical tempering yield of the glass 1 with a thickness of 1.5 mm to 2 mm.

[0068] Specifically, the conveying plate 3 and the transition part are integrally arranged, which saves the assembly process between the conveying plate 3 and the transition part and improves the assembly accuracy of the suspension conveying device of this embodiment.

[0069] Embodiment 2

[0070] like Figure 1 and Figure 2 The figure shows a tempered glass production line provided in the present embodiment, comprising a tempering furnace 2 and a suspension conveying device, wherein the suspension conveying device adopts the suspension conveying device described in the first embodiment. The tempered glass production line of the present embodiment is provided with a plurality of air flow openings on the upper end surface of the conveying plate 3 in the suspension conveying device along the conveying direction of the glass 1, and an air inlet and an air outlet connected to the air flow chamber are respectively provided at the input end and the output end of the conveying plate 3; in the process of conveying the glass 1 with a thickness of 1.5 mm to 2 mm through the interior of the tempering furnace 2 for physical tempering, the air inlet is started to input high-pressure gas into the air flow chamber and spray it into the interior of the tempering furnace 2 through the air flow opening near the input end of the conveying plate 3 to suspend and hold up the glass 1, and at the same time, the air outlet is started to draw the gas inside the tempering furnace 2 from the air flow opening near the output end of the conveying plate 3 into the air flow chamber and draw it out through the air outlet, so that the pressure inside the tempering furnace 2 near the input end of the conveying plate 3 is greater than the pressure near the output end of the conveying plate 3 (that is, the pressure inside the tempering furnace 2 is greater along the conveying direction of the glass 1). The conveying plate 3 gradually decreases in the direction of the height of the glass 1, thereby generating a pressure difference in the space above the conveying plate 3 in the height direction along the conveying direction of the glass 1, and then causing the glass 1 to be suspended and conveyed through the interior of the tempering furnace 2 for physical tempering under the force generated by the pressure difference. During the entire process of using the tempered glass production line of this embodiment to physically temper the glass 1 with a thickness of 1.5 mm to 2 mm, the conveying plate 3 does not contact the glass 1, which neither pollutes the lower surface of the glass 1 nor effectively avoids the roller sticking phenomenon; and the glass 1 is suspended and conveyed by the airflow, so that the glass 1 is not easily deformed during the heating process, and the tempering is more uniform, ensuring that the strength of the glass 1 with a thickness of 1.5 mm to 2 mm after physical tempering reaches 80 MPa to 130 MPa, meeting the requirements of architectural applications, and improving the physical tempering quality and yield rate of the glass 1 with a thickness of 1.5 mm to 2 mm.

[0071] Specifically, the tempered glass production line further includes a cooling section, which is located at the output end of the tempering furnace 2, and the outlet end of the gas outlet is connected to the cooling section. Compared with rapidly cooling the physically tempered glass 1 by contacting it with the outside air (20°C to 25°C), this embodiment uses the relatively high temperature gas (35°C to 40°C) output from the outlet end of the gas outlet, which is higher than the outside air temperature, to contact the physically tempered glass 1 transported to the cooling section for heat exchange, thereby reducing the temperature difference between the relatively high temperature gas output from the outlet end of the gas outlet and the physically tempered glass 1, and slowly cooling the physically tempered glass 1, effectively avoiding the phenomenon of glass 1 bursting due to rapid cooling.

[0072] Specifically, the cooling section is connected with a conveying pipe, and the gas outlet end of the conveying pipe is connected with a gas heating assembly, and the gas outlet end of the gas heating assembly is connected with the interior of the tempering furnace 2, and is used to heat the room temperature glass entering the inlet end of the tempering furnace 2. Compared with using external air (20℃ to 25℃) as a gas source to input into the gas heating assembly for heating at about 300℃, and then heating the room temperature glass (20℃ to 25℃) entering from the inlet end of the tempering furnace 2; this embodiment uses a relatively high temperature gas output from the gas outlet end of the gas outlet and heat exchanged with the physically tempered glass 1 as a gas source, and implements the reuse of the heat generated by the tempering furnace 2 to reduce energy consumption and costs.

[0073] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A suspension conveying device, used for conveying glass (1) with a thickness of 1.5 mm to 2 mm through a tempering furnace (2) for physical tempering, characterized in that: The suspension conveying device comprises: A conveying plate (3) is used to be arranged in the tempering furnace (2), wherein an airflow chamber is arranged in the conveying plate (3), and a plurality of airflow openings are arranged at intervals on the upper end surface of the conveying plate (3) in the height direction along the conveying direction of the glass (1), and the airflow openings are connected to the airflow chamber; An air inlet portion, arranged at the input end of the conveying plate (3), the air inlet portion being connected to the air flow chamber and used for conveying high-pressure gas into the air flow chamber; An air outlet portion, arranged at the output end of the conveying plate (3), the air outlet portion being connected to the air flow chamber and used for extracting the gas in the air flow chamber close to the output end of the conveying plate (3); When the suspension conveying device is in a conveying state, the pressure difference formed along the conveying direction of the glass (1) drives the glass (1) to move in suspension.

2. A suspension conveying device according to claim 1, characterized in that: The invention also comprises a blowing plate (8), wherein the blowing plate (8) is used to be arranged in the tempering furnace (2) and is located directly above the conveying plate (3) in the height direction; a plurality of blowing ports (81) are arranged at intervals on the lower end surface of the blowing plate (8) in the height direction along the conveying direction of the glass (1), and the blowing ports (81) are connected to the interior of the blowing plate (8); a blowing part is connected to the interior of the blowing plate (8), and the blowing part is used to convey cooling air to the interior of the blowing plate (8); the air inlet part is used to convey high-pressure cold air into the airflow chamber, and the wind pressure of the high-pressure cold air is greater than the wind pressure of the cooling air.

3. A suspension conveying device according to claim 1 or 2, characterized in that: The air intake portion comprises an air intake pipe (41), the air intake pipe (41) is in communication with the air flow chamber, and the air intake pipe (41) is provided with a first valve (42) for controlling the opening and closing of the air intake pipe (41); And / or, the air outlet portion comprises an air outlet pipe (51), the air outlet pipe (51) is communicated with the air flow chamber, and the air outlet pipe (51) is provided with a second valve (52) for controlling the opening and closing of the air outlet pipe (51); And / or, a suspended airflow nozzle (31) is embedded in the airflow opening, and the suspended airflow nozzle (31) is arranged along the height direction.

4. A suspension conveying device according to claim 1 or 2, characterized in that: The air outlet end of the air inlet portion is connected to the lower end surface of the conveying plate (3) in the height direction; And / or, the air inlet end of the air outlet is connected to the lower end surface of the conveying plate (3) in the height direction; It also includes an input roller assembly (6), which is used to be arranged flush with the entrance end of the tempering furnace (2) and is used to transport the glass (1) into the tempering furnace (2); And / or, it also includes an output roller assembly (7), wherein the output roller assembly (7) is used to be arranged flush with the outlet end of the tempering furnace (2) and is used to transport the glass (1) to the outside of the tempering furnace (2).

5. A suspension conveying device according to claim 4, characterized in that: The upper end position of the input roller assembly (6) along the height direction is higher than the upper end position of the output roller assembly (7) along the height direction, and the upper end position of the output roller assembly (7) along the height direction is higher than the upper end position of the conveying plate (3) along the height direction.

6. A suspension conveying device according to claim 5, characterized in that: A transition portion is provided on one side of the conveying flat plate (3) facing the output roller assembly (7), and the upper end surface of the transition portion in the height direction is not provided with the air flow opening.

7. A suspension conveying device according to claim 6, characterized in that: The conveying plate (3) and the transition portion are arranged integrally.

8. A tempered glass production line, characterized in that: It comprises a tempering furnace (2) and a suspension conveying device, wherein the suspension conveying device is the suspension conveying device according to any one of claims 1 to 7.

9. A tempered glass production line according to claim 8, characterized in that: It also includes a cooling section, which is located at the output end of the tempering furnace, and the gas outlet end of the gas outlet part is connected to the cooling section.

10. A tempered glass production line according to claim 9, characterized in that: The cooling section is connected to a conveying pipe, the gas outlet end of the conveying pipe is connected to a gas heating component, the gas outlet end of the gas heating component is connected to the interior of the tempering furnace (2), and is used to heat the room temperature glass entering the inlet end of the tempering furnace (2).

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