Float glass runner waste discharge device and use method

Abstract

The invention relates to a float glass flow channel waste discharge device which comprises a main cover plate arranged on the upper portion of a flow channel and further comprises an auxiliary cover plate, a first telescopic rod, a plurality of adjusting plates, a sucking pump, a controller, a plurality of thermocouples and an adjusting assembly, the auxiliary cover plate is arranged on the top of the main cover plate, and a closed cavity is formed between the main cover plate and the auxiliary cover plate; a plurality of strip-shaped exhaust holes are formed in the main cover plate and the auxiliary cover plate in parallel and correspond to each other up and down; the length direction of the exhaust holes is parallel to the flowing direction in the flow channel; the adjusting plates are of a right triangle structure and correspond to the exhaust holes in a one-to-one mode, the adjusting plates are attached to the top face of the main cover plate and arranged on one sides of the exhaust holes in a sliding mode, and the right-angle long sides of the adjusting plates are parallel to the extending direction of the exhaust holes. Overall coarse adjustment of the exhaust flow in the length direction of the runner is achieved, and the differential requirements of a high-waste-gas and high-temperature area at the melting furnace end and a low-working-condition area at the tin bath end are accurately met.

Description

Technical Field

[0001] This invention relates to the field of float glass technology, specifically to a float glass flow channel waste discharge device and its usage method. Background Technology

[0002] During the float glass production process, as the molten glass is transported from the flow channel to the tin bath, waste gases containing sulfur, selenium, and other components, as well as residual heat, are continuously released from the surface of the molten glass. If these waste gases and residual heat accumulate or stagnate disorderly in the space above the flow channel, it will lead to several process problems: First, the waste gases may recondense and drip onto the surface of the molten glass, forming surface defects that seriously affect the cleanliness and optical quality of the glass; second, excessively high local temperatures will interfere with the thermal uniformity of the molten glass before entering the tin bath, affecting its spreading and forming stability; third, the harsh working environment also accelerates the corrosion of refractory components such as the upper gate and cover plates.

[0003] Currently, the common waste discharge method involves installing a fixed cover plate at the top of the flow channel and opening simple vents or connecting an extraction device for overall suction. This waste discharge flow rate is fixed or can only be coarsely adjusted overall, failing to respond to the actual temperature and waste gas concentration differences along the length of the flow channel. For example, the temperature is high and the waste gas emission is large near the furnace inlet, while it is relatively low near the tin bath inlet. A fixed waste discharge mode may result in insufficient suction in high-temperature areas, leading to waste gas accumulation. Conversely, excessive suction in low-temperature areas may remove too much heat, even disturbing the glass melt surface. Furthermore, traditional cover plate structures cannot achieve rapid and precise adjustments for small, localized areas to adapt to instantaneous fluctuations in production conditions. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a float glass flow channel waste discharge device and its usage method, thereby solving the problem that the exhaust port diameter is fixed in existing technologies, making it impossible to adjust according to the temperature and waste gas concentration distribution differences along the length of the flow channel, which affects glass quality and production stability.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a float glass flow channel waste discharge device, comprising a main cover plate disposed at the upper part of the flow channel, and further comprising a secondary cover plate, a first telescopic rod, several adjusting plates, a vacuum pump, a controller, several thermocouples, and adjusting components. The secondary cover plate is disposed on top of the main cover plate, and a sealed cavity is provided between the main cover plate and the secondary cover plate. Several strip-shaped exhaust holes are arranged side by side on the main cover plate and the secondary cover plate, corresponding vertically, with the length direction of the exhaust holes parallel to the flow direction within the flow channel. The adjusting plates are right-angled triangular structures, with each adjusting plate corresponding to one of the exhaust holes. The top surfaces of the adjusting plates and the main cover plate are... The adjusting plate is attached and slidably mounted on one side of the exhaust hole, with the long right-angle side of the adjusting plate parallel to the extension direction of the exhaust hole; a connecting plate is provided between adjacent adjusting plates on their short right-angle sides; the first telescopic rod is used to drive the adjusting plate to slide as a whole, with the sliding direction perpendicular to the length direction of the exhaust hole; several adjusting holes are provided on the inclined side of the adjusting plate; an adjusting assembly is provided on the adjusting plate to control the opening and closing of the adjusting holes; the suction port of the air pump is connected to the exhaust hole at the top of the sub-cover plate; the thermocouple is fixedly mounted on the main cover plate and arranged along the flow direction in the flow channel; the thermocouple, the first telescopic rod, and the adjusting assembly are all electrically connected to the controller.

[0006] Preferably, the adjustment assembly includes a second telescopic rod, a push rod, several sliding covers, several control rods, and a connecting frame. The top surface of the main cover plate has a sliding groove at the location of the vent hole, and the extension direction of the sliding groove is parallel to the long right-angle side of the adjustment plate. The sliding covers and the sliding groove are adapted to each other. The control rods are vertically fixedly mounted on the top surface of the sliding covers, and the connecting frame is fixedly connected to each control rod, extending to the outer side of the short side of the adjustment plate. The push rod is horizontally mounted and parallel to the short side of the adjustment plate. A sliding ring is fixedly mounted on the edge of the connecting frame, and the sliding ring is sleeved on the push rod. The second telescopic rod is used to drive the push rod to move laterally, and the direction of movement is parallel to the long right-angle side of the adjustment plate.

[0007] Preferably, the cylinder of the first telescopic rod is fixedly mounted on the top plate of the sub-cover plate, and the piston rod end of the first telescopic rod is provided with a downwardly extending first extension rod, the bottom end of the first extension rod being connected to an adjusting plate located at the edge; the cylinder of the second telescopic rod is fixedly mounted on the top plate of the sub-cover plate, and the piston rod end of the second telescopic rod is provided with a downwardly extending second extension rod; the sub-cover plate is provided with a sliding through hole for the movement of the first extension rod and the second extension rod.

[0008] Preferably, a steel gate is provided on the flow channel, and a strip-shaped exhaust hole is provided on the side of the steel gate near the float glass furnace.

[0009] Preferably, the inclined edge of the adjusting plate is stepped.

[0010] Preferably, the cylinder bodies of the first and second telescopic rods are wrapped with heat-insulating material.

[0011] Preferably, each of the control levers is fixedly connected to the connecting frame on the side closest to the long side of the adjustment plate.

[0012] Preferably, the adjusting plate, sliding cover, and main cover are all made of high-temperature resistant materials, and the contact surfaces of the adjusting plate and the main cover are provided with wear-resistant pads; the contact surfaces of the sliding cover and the adjusting plate are provided with wear-resistant pads.

[0013] Preferably, a sealing plate is provided around the top surface of the main cover plate, and the adjusting plate is located within the annular ring formed by the sealing plate.

[0014] A method of using a waste discharge device for float glass flow channels includes the following steps:

[0015] S1: The air pump operates, creating a negative pressure in the cavity; the controller acquires real-time temperature data of the flow channel detected by each thermocouple; S2: The controller determines whether the exhaust flow needs to be adjusted in the first stage based on the real-time temperature data; if so, it sends a drive command to the first telescopic rod to drive the adjustment plate to slide as a whole, thereby changing the opening and closing of the exhaust hole and realizing the overall flow adjustment of the exhaust area. S3: The controller determines whether secondary adjustment of the local exhaust is required based on the real-time temperature data; if so, it sends a drive command to the adjustment component to drive the sliding cover to slide on the adjustment hole to change the opening and closing state of the adjustment hole and realize fine flow adjustment of the local exhaust point. S4: Repeat steps S1 to S3 to form a closed-loop dynamic adjustment based on flow channel temperature feedback.

[0016] Compared with existing technologies, the technical solution of this application has the following technical effects: This invention, through the main and auxiliary cover plate cavities and strip-shaped exhaust holes, combined with a right-angled triangular adjusting plate and a first telescopic rod, achieves overall coarse adjustment of the exhaust flow rate along the length of the flow channel, precisely matching the differentiated needs of the high-waste gas and high-temperature zone at the melting furnace end and the low-condition zone at the tin bath end. The adjusting components can finely control local micro-areas, and combined with the intelligent linkage of thermocouples and controllers, it can automatically adapt to fluctuations in operating conditions, avoiding waste gas accumulation, excessive heat loss, and disturbance of the glass liquid surface. This not only prevents glass surface defects and ensures molding stability but also delays corrosion of refractory components, improving the quality of finished glass products and production efficiency. Attached Figure Description

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0018] Figure 1 This is an external schematic diagram of the present invention; Figure 2 This is a schematic diagram of the adjustment component of the present invention; Figure 3 This is a schematic diagram of the sliding cover connection of the present invention; Figure 4 This is a schematic diagram of the adjustment hole of the present invention; Figure 5 This is a schematic diagram showing the location of the exhaust port in this invention; In the diagram: 1. Flow channel; 2. Secondary cover plate; 3. Main cover plate; 4. Steel gate plate; 5. First telescopic rod; 6. Evacuation hood; 7. Push rod; 8. Second telescopic rod; 9. Sliding ring; 10. First extension rod; 11. Second extension rod; 12. Exhaust port; 13. Adjusting plate; 14. Sliding groove; 15. Sliding cover; 16. Connecting frame; 17. Control rod; 18. Adjustment hole; 19. Evacuation pipe. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] like Figure 1 , 2As shown in Figure 5, a float glass flow channel waste discharge device includes a main cover plate 3 disposed on the upper part of the flow channel 1, a secondary cover plate 2, a first telescopic rod 5, several adjusting plates 13, a vacuum pump, a controller, several thermocouples, and adjusting components. The secondary cover plate 2 is disposed on top of the main cover plate 3, and a sealed cavity is provided between the main cover plate 3 and the secondary cover plate 2. Several strip-shaped exhaust holes 12 are arranged side by side on the main cover plate 3 and the secondary cover plate 2, corresponding vertically. The length direction of the exhaust holes 12 is parallel to the flow direction in the flow channel 1. The adjusting plates 13 have a right-angled triangular structure, and the adjusting plates 13 correspond one-to-one with the exhaust holes 12. The top surfaces of the adjusting plates 13 and the main cover plate 3 are attached to and slidably disposed on one side of the exhaust holes 12. The long right-angle side of the adjusting plate 13 is parallel to the extension direction of the exhaust holes 12. A connecting plate is provided between adjacent adjusting plates 13 on their short right-angle sides. The first telescopic rod 5 is used to drive the adjusting plates 13 to slide as a whole, and the sliding direction is perpendicular to the length direction of the exhaust holes 12. Several adjustment holes 18 are provided on the inclined side of the adjustment plate 13. An adjustment assembly is mounted on the adjustment plate 13 to control the opening and closing of the adjustment holes 18. The suction port of the vacuum pump is connected to the exhaust hole 12 on the top of the secondary cover plate 2. Thermocouples are fixedly mounted on the main cover plate 3 and arranged along the flow direction within the flow channel 1. The thermocouples, the first telescopic rod 5, and the adjustment assembly are all electrically connected to the controller. In this embodiment, the invention monitors the temperature distribution of the molten glass within the flow channel 1 in real time using thermocouples and feeds the data back to the controller. The controller analyzes the temperature data and first drives the first telescopic rod 5 to synchronously slide all the adjustment plates 13, adjusting the opening and closing area of ​​the strip-shaped exhaust holes 12 on the main cover plate 3 as a whole, so that the radiation area of ​​the exhaust holes 12 can be adjusted along the flow direction of the flow channel 1. Secondly, the controller can operate the adjustment assembly on each adjustment plate 13 to precisely open and close the adjustment holes 18, finely adjusting the local exhaust volume. During this process, the extraction pump operates continuously, creating a stable negative pressure above the cover cavity and flow channel 1, thereby actively and precisely extracting the exhaust gas. An extraction hood 6 is installed on the top of the sub-cover 2, with the exhaust port 12 located inside the extraction hood 6. An extraction pipe 19 is installed between the extraction hood 6 and the extraction pump for communication. A meter is installed on the extraction pump. When the temperature within the flow channel 1 fluctuates, causing changes in the range where harmful components can be released from the gas, the opening and closing length of the adjusting hole 18 can be used to precisely target the area where harmful gases are released.

[0021] like Figure 2 , 3As shown in Figure 4, preferably, the adjustment assembly includes a second telescopic rod 8, a push rod 7, several sliding covers 15, several control rods 17, and a connecting frame 16. A sliding groove 14 is provided on the top surface of the main cover plate 3 at the position of the exhaust hole 12. The extending direction of the sliding groove 14 is parallel to the long side of the right angle of the adjustment plate 13. The sliding covers 15 and the sliding groove 14 are adapted to each other. The control rods 17 are vertically fixed on the top surface of the sliding covers 15. The connecting frame 16 is fixedly connected to each control rod 17, and extends to the outside of the short side of the adjustment plate 13. The push rod 7 is horizontally positioned and parallel to the short side of the adjustment plate 13. A sliding ring 9 is fixedly provided on the edge of the connecting frame 16, and the sliding ring 9 is sleeved on the push rod 7. The second telescopic rod 8 is used to drive the push rod 7 to move laterally, with the moving direction parallel to the long side of the right angle of the adjustment plate 13. In this embodiment, two second telescopic rods 8 are provided to provide stable power. When the controller determines that fine adjustment of the local exhaust volume is needed based on temperature data, it instructs the second telescopic rod 8 to move. The second telescopic rod 8 drives the push rod 7 connected to it to move laterally. Since the sliding ring 9 on the edge of the connecting frame 16 is sleeved on the push rod 7, the movement of the push rod 7 will cause the entire connecting frame 16 to slide laterally. The connecting frame 16, through the vertical control rods 17 fixedly connected to it, synchronously pulls all the sliding covers 15 to move in the sliding groove 14 on the top surface of the main cover plate 3. The translation of the sliding cover 15 directly changes its coverage area on the adjustment hole 18 on the adjustment plate 13 below, thereby controlling the opening and closing of the adjustment hole 18 and realizing the fine adjustment of the local exhaust volume.

[0022] Preferably, the cylinder of the first telescopic rod 5 is fixedly mounted on the top plate of the sub-cover plate 2, and the piston rod end of the first telescopic rod 5 is provided with a downwardly extending first extension rod 10, the bottom end of which is connected to the adjusting plate 13 located at the edge. The cylinder of the second telescopic rod 8 is fixedly mounted on the top plate of the sub-cover plate 2, and the piston rod end of the second telescopic rod 8 is provided with a downwardly extending second extension rod 11. The sub-cover plate 2 is provided with sliding through holes for the movement of the first extension rod 10 and the second extension rod 11. In this embodiment, the first telescopic rod 5 and the second telescopic rod 8 are installed on the top surface of the sub-cover plate 2, isolating them from the high-temperature area of ​​the flow channel 1, avoiding the influence of heat sources on the performance of the drive components, and improving the operational reliability and service life of the equipment.

[0023] Preferably, a steel gate 4 is provided on the flow channel 1, and a strip-shaped exhaust port 12 is located on the side of the steel gate 4 near the float glass furnace. In this embodiment, the source interception and removal of harmful gases and volatiles are achieved.

[0024] like Figure 3 As shown, preferably, the inclined edge of the adjusting plate 13 is stepped. In this embodiment, the stepped structure transforms continuous inclined adjustment into multi-level fixed opening, improving the adjustment accuracy.

[0025] Preferably, the cylinder bodies of the first telescopic rod 5 and the second telescopic rod 8 are wrapped with heat-insulating material. In this embodiment, the heat-insulating material is ceramic fiber.

[0026] Preferably, each of the control levers 17 is fixedly connected to the connecting frame 16 on the side closest to the long side of the adjusting plate 13. In this embodiment, when the adjusting hole 18 is in the open state, there is a gap in the vertical space between the connecting frame 16 and the adjusting hole 18. This prevents high-temperature airflow from directly impacting the connecting frame 16.

[0027] Preferably, the adjusting plate 13, the sliding cover 15, and the main cover plate 3 are all made of high-temperature resistant materials, and wear-resistant pads are provided on the contact surfaces of the adjusting plate 13 and the main cover plate 3. Wear-resistant pads are also provided on the contact surfaces of the sliding cover 15 and the adjusting plate 13. The wear-resistant pads improve the long-term operational reliability of the entire adjusting system.

[0028] Preferably, a sealing plate is provided around the top surface of the main cover plate 3, and the adjusting plate 13 is located within the annular ring formed by the sealing plate. In this embodiment, the main cover plate 3, the sealing plate, and the secondary cover plate 2 form a cavity, which effectively isolates the moving area of ​​the adjusting plate 13 from the external environment, ensuring the stability and airtightness of the negative pressure field when the air pump is working.

[0029] A method of using a waste discharge device for float glass flow channels includes the following steps: S1: The vacuum pump operates, creating a negative pressure within the cavity. The controller acquires real-time temperature data within flow channel 1 detected by each thermocouple.

[0030] S2: The controller determines whether a primary adjustment of the exhaust flow rate is needed based on the real-time temperature data. If so, it sends a drive command to the first telescopic rod 5 to drive the adjustment plate 13 to slide as a whole, thereby changing the opening and closing of the exhaust port 12 and realizing the overall flow rate adjustment of the exhaust area.

[0031] S3: The controller determines whether secondary adjustment of the local exhaust is required based on the real-time temperature data. If required, it sends a drive command to the adjustment component to drive the sliding cover 15 to slide on the adjustment hole 18, thereby changing the opening and closing state of the adjustment hole 18 and realizing fine flow adjustment of the local exhaust point.

[0032] S4: Repeat steps S1 to S3 to form a closed-loop dynamic adjustment based on the temperature feedback of flow channel 1.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A waste discharge device for a float glass flow channel, comprising a main cover plate (3) disposed on the upper part of the flow channel (1), characterized in that: It also includes a secondary cover plate (2), a first telescopic rod (5), several adjusting plates (13), a vacuum pump, a controller, several thermocouples and adjusting components. The secondary cover plate (2) is set on the top of the main cover plate (3), and a sealed cavity is provided between the main cover plate (3) and the secondary cover plate (2). Several strip-shaped exhaust holes (12) are arranged side by side on the main cover plate (3) and the secondary cover plate (2) and correspond to each other vertically. The length direction of the exhaust holes (12) is parallel to the flow direction in the flow channel (1). The adjusting plate (13) is a right-angled triangular structure. The adjusting plate (13) and the exhaust hole (12) correspond one-to-one. The top surface of the adjusting plate (13) and the main cover plate (3) are attached and slidably set on one side of the exhaust hole (12). 3) The long right-angle side and the extension direction of the exhaust hole (12) are parallel; the adjacent adjustment plates (13) are provided with a connecting plate between the short right-angle sides; the first telescopic rod (5) is used to drive the adjustment plate (13) to slide as a whole, and the sliding direction is perpendicular to the length direction of the exhaust hole (12); a number of adjustment holes (18) are provided on the inclined side of the adjustment plate (13); the adjustment component is set on the adjustment plate (13) to control the opening and closing of the adjustment holes (18); the air pump port and the exhaust hole (12) at the top of the sub-cover plate (2) are connected; the thermocouple is fixedly set on the main cover plate (3) and arranged along the flow direction in the flow channel (1); the thermocouple, the first telescopic rod (5) and the adjustment component are all electrically connected to the controller.

2. The float glass flow channel waste discharge device according to claim 1, characterized in that: The adjustment assembly includes a second telescopic rod (8), a push rod (7), several sliding covers (15), several control rods (17), and a connecting frame (16). The top surface of the main cover plate (3) is provided with a sliding groove (14) at the position of the exhaust hole (12). The extension direction of the sliding groove (14) is parallel to the long side of the right angle of the adjustment plate (13). The sliding cover (15) and the sliding groove (14) are adapted to each other. The control rod (17) is vertically fixed on the top surface of the sliding cover (15). The connecting frame (16) is fixedly connected to each control rod (17). The connecting frame (16) extends to the outside of the short side of the adjustment plate (13). The push rod (7) is horizontally set and parallel to the short side of the adjustment plate (13). A sliding ring (9) is fixedly set on the edge of the connecting frame (16). The sliding ring (9) is sleeved on the push rod (7). The second telescopic rod (8) is used to drive the push rod (7) to move laterally. The moving direction is parallel to the long side of the right angle of the adjustment plate (13).

3. The float glass flow channel waste discharge device according to claim 2, characterized in that: The cylinder of the first telescopic rod (5) is fixedly mounted on the top plate of the sub-cover plate (2). The piston rod end of the first telescopic rod (5) is provided with a downwardly extending first extension rod (10). The bottom end of the first extension rod (10) is connected to the adjusting plate (13) located at the edge. The cylinder of the second telescopic rod (8) is fixedly mounted on the top plate of the sub-cover plate (2). The piston rod end of the second telescopic rod (8) is provided with a downwardly extending second extension rod (11). The sub-cover plate (2) is provided with a sliding through hole for the movement of the first extension rod (10) and the second extension rod (11).

4. The float glass flow channel waste discharge device according to claim 1, characterized in that: A steel gate (4) is provided on the flow channel (1), and a strip-shaped exhaust hole (12) is provided on the side of the steel gate (4) near the float glass furnace.

5. The float glass flow channel waste discharge device according to claim 1, characterized in that: The inclined edge of the adjustment plate (13) is stepped.

6. The float glass flow channel waste discharge device according to claim 3, characterized in that: The cylinder bodies of the first telescopic rod (5) and the second telescopic rod (8) are wrapped with heat insulation material.

7. A float glass flow channel waste discharge device according to claim 2, characterized in that: Each of the control levers (17) is fixedly connected to the connecting frame (16) on the side of its long side near the adjustment plate (13).

8. The float glass flow channel waste discharge device according to claim 1, characterized in that: The adjusting plate (13), sliding cover (15), and main cover plate (3) are all made of high temperature resistant materials. The mating surfaces of the adjusting plate (13) and the main cover plate (3) are provided with wear-resistant pads; the mating surfaces of the sliding cover (15) and the adjusting plate (13) are provided with wear-resistant pads.

9. A float glass flow channel waste discharge device according to claim 1, characterized in that: The main cover plate (3) is provided with sealing plates around its top surface, and the adjusting plate (13) is located within the annular ring formed by the sealing plates.

10. A method of using the float glass flow channel waste discharge device according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1: The air pump operates, creating a negative pressure in the cavity; the controller acquires real-time temperature data in the flow channel (1) detected by each thermocouple; S2: The controller determines whether the exhaust flow needs to be adjusted in the first stage based on the real-time temperature data; if so, it sends a drive command to the first telescopic rod (5) to drive the adjustment plate (13) to slide as a whole, so as to change the opening and closing of the exhaust hole (12) and realize the overall flow adjustment of the exhaust area. S3: The controller determines whether secondary adjustment of local exhaust is required based on the real-time temperature data; if so, it sends a drive command to the adjustment component to drive the sliding cover (15) to slide on the adjustment hole (18) to change the opening and closing state of the adjustment hole (18) and realize fine flow adjustment of local exhaust point. S4: Repeat steps S1 to S3 to form a closed-loop dynamic adjustment based on the temperature feedback of the flow channel (1).

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