Temperature and pressure control mechanism in float glass annealing kiln

Abstract

The invention provides a temperature and pressure control mechanism in a float glass annealing kiln, and belongs to the technical field of float glass production. Comprising two temperature control units located on the upper side and the lower side of a glass conveying roller way correspondingly, each temperature control unit comprises an air box away from a glass plate face and two side plates arranged on the side, close to the glass plate face, of the air box, and the two side plates are located on the two sides of the glass conveying roller way correspondingly; an air inlet pipe and an air outlet pipe are arranged on the side, close to the glass plate outlet direction, of the air bellow and the side, close to the glass plate coming direction, of the air bellow respectively, a plurality of partition plates arranged at intervals are longitudinally arranged in the air bellow, and ventilation openings are reserved between the partition plates and the air bellow; an air inlet pipeline and an air outlet pipeline are arranged on the two side plates respectively, and the air inlet pipeline is connected with the air inlet end of the ducted air conditioner. The invention has the advantages of more reliable temperature and air pressure control and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of float glass production and relates to a temperature and pressure control mechanism in a float glass annealing furnace. Background Art

[0002] Usually, float glass enters the annealing furnace after being formed in the tin bath for cooling and stress distribution regulation to meet the requirements of online cutting and customer use. The float glass production line annealing furnace can be divided into 5 areas from front to back, namely, area A (heating and soaking area), area B (important annealing area), area C (post-annealing area), area D (hot air circulation forced convection cooling area), and area F (room temperature wind forced cooling convection area). The stress that still exists after the glass temperature is reduced to room temperature in areas A and B is permanent stress, and the stress that is eliminated after the glass temperature is reduced to room temperature in areas C, D, and F is temporary stress. Areas A, B, C, and D are a whole in the length direction of the annealing furnace. A baffle is set on the upper and lower parts of the glass between each area to divide the areas, but the glass needs to pass through each area, and the partition is not complete. Areas A, B, and C radiate and cool the glass through internal cooling ducts, and the cooling air will not enter the interior of the annealing furnace; Area D cools the glass through hot air convection, and the cooling air will enter the interior of the annealing furnace.

[0003] Existing technical problems:

[0004] Since the partitions cannot be completely separated, the hot air flow in zone D will enter zones A, B, and C, and will have an irreversible impact on the glass stress in zones A, B, and C, resulting in consequences such as finished product breakage and glass cracking. Therefore, the cooling air flow in zone D is difficult to control and will inevitably enter zones A, B, and C, affecting the difficulty of temperature control in zones A, B, and C. Therefore, the cooling method for zone D needs to be improved. Summary of the invention

[0005] The purpose of the present invention is to provide a temperature and pressure control mechanism in a float glass annealing furnace in view of the above problems existing in the prior art. The technical problem to be solved by the present invention is how to reduce the movement of airflow during the cooling process.

[0006] The object of the present invention can be achieved through the following technical solutions: a temperature and pressure control mechanism in a float glass annealing furnace, characterized in that it includes two temperature control units respectively located on the upper and lower sides of a glass transmission roller, the temperature control unit includes a bellows away from the glass plate surface and two side panels arranged on the side of the bellows close to the glass plate surface, the two side panels are respectively located on both sides of the glass transmission roller, the bellows is close to the glass plate outgoing direction and the side of the bellows is close to the glass plate incoming direction respectively provided with an air inlet pipe and an air outlet pipe, a plurality of partitions arranged alternately are longitudinally arranged in the bellows, ventilation holes are reserved between the partitions and the bellows, the ventilation holes of adjacent partitions are respectively located on the upper and lower sides of the bellows, an air inlet duct and an air outlet duct are respectively arranged on the two side panels, and the air inlet duct is connected to the air inlet end of the duct machine.

[0007] Furthermore, a plurality of partition boards are arranged between the two side boards, and the interval between adjacent partition boards is 80 to 200 cm.

[0008] Furthermore, a water-cooled water tank is arranged in the wind box at the partition plate, and the water-cooled water tank comprises a transversely arranged cylindrical water tank and a water wheel rotatably connected in the water tank, and the water inlet and outlet ends of the water-cooled water tank are respectively connected to the cold water source and the hot water return pipe.

[0009] Furthermore, a plurality of heat conducting plates are arranged at intervals outside the water tank.

[0010] This solution changes the traditional D zone hot air circulation forced convection cooling method into a relatively static cooling method, and utilizes the closed risk internal circulation cooling airflow to reduce and adjust the ambient temperature of the area where the upper and lower glass panels are located, and then sets a horizontal cooling airflow auxiliary on the side panel. The horizontal cooling airflow is relatively less likely to penetrate into areas outside the D zone. In addition, the presence of the partition makes the cooling airflow, temperature and air pressure in the D zone relatively independent.

[0011] In order to enhance the temperature control effect of area D, multiple water tanks are set on the board path of area D. The water tanks are located on the flow path of the airflow in the bellows, which can control the temperature of the airflow in the bellows. The speed of the water wheel can be increased or decreased as needed to adjust the temperature of each area of ​​the bellows, or the temperature of each area in the bellows can be gradually reduced. Therefore, in terms of controlling temperature and controlling airflow movement and air pressure balance, this solution is superior to the existing forced air cooling method, and the means of controlling temperature are diversified, which has positive effects on control accuracy and control difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the temperature and pressure control mechanism in the annealing furnace.

[0013] Figure 2 It is a structural diagram of the water cooling tank.

[0014] In the figure, 1. bellows; 2. side panel; 3. air inlet pipe; 4. air outlet pipe; 5. air inlet pipe; 6. partition plate; 7. water cooling tank; 8. water wheel; 9. heat conducting plate; 10. partition. DETAILED DESCRIPTION

[0015] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0016] like Figure 1 and Figure 2 The temperature and pressure control mechanism in the float glass annealing furnace shown includes two temperature control units respectively located on the upper and lower sides of the glass transmission roller, the temperature control unit includes a bellows 1 away from the glass plate surface and two side panels 2 arranged on the side of the bellows 1 close to the glass plate surface, the two side panels 2 are respectively located on both sides of the glass transmission roller, the bellows 1 is provided with an air inlet pipe 3 and an air outlet pipe 4 on the side close to the glass plate outgoing direction and the side close to the glass plate incoming direction, a plurality of partitions 10 arranged alternately in the longitudinal direction of the bellows 1 are arranged, ventilation holes are reserved between the partitions 10 and the bellows 1, the ventilation holes of adjacent partitions 10 are respectively located on the upper and lower sides of the bellows 1, and air inlet pipes 5 and air outlet pipes are respectively arranged on the two side panels 2, and the air inlet pipes 5 are connected to the air inlet end of the air duct machine.

[0017] A plurality of partition plates 6 are arranged between the two side plates 2, and the interval between adjacent partition plates 6 is 80 to 200 cm. A water-cooled water tank 7 is arranged in the wind box 1 at the partition plate 6, and the water-cooled water tank 7 comprises a horizontally arranged cylindrical water tank and a water wheel 8 rotatably connected in the water tank. The water inlet and the water outlet of the water-cooled water tank 7 are respectively connected to the cold water source and the hot water return pipe, and a plurality of heat conducting sheets 9 are arranged alternately outside the water-cooled water tank.

[0018] This solution changes the traditional D zone hot air circulation forced convection cooling method into a relatively static cooling method, and utilizes the closed risk internal circulation cooling airflow to reduce and adjust the ambient temperature of the area where the upper and lower glass panels are located, and then sets a horizontal cooling airflow auxiliary on the side panel 2. The horizontal cooling airflow is relatively not easy to penetrate into the area outside the D zone. In addition, the existence of the partition 10 makes the cooling airflow, temperature and air pressure in the D zone relatively independent.

[0019] In order to enhance the temperature control effect of the D zone, multiple water tanks are arranged on the board path of the D zone. The water tanks are located on the flow path of the airflow in the bellows 1, and the airflow temperature in the bellows 1 can be controlled. The speed of the water wheel 8 can be increased or decreased as needed to adjust the temperature of each area of ​​the bellows 1, or the temperature of each area in the bellows 1 can be gradually reduced. Therefore, in terms of controlling temperature and controlling airflow movement and air pressure balance, this solution is superior to the existing forced air cooling method, and the means of controlling temperature are diversified, which has positive effects in terms of control accuracy and control difficulty.

[0020] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A temperature and pressure control mechanism in a float glass annealing furnace, characterized in that: The invention comprises two temperature control units respectively located at the upper and lower sides of a glass conveying roller, the temperature control unit comprises a wind box (1) away from a glass plate surface and two side panels (2) arranged on the side of the wind box (1) close to the glass plate surface, the two side panels (2) are respectively located on both sides of the glass conveying roller, the wind box (1) is respectively provided with an air inlet pipe (3) and an air outlet pipe (4) on the side close to a glass plate outgoing direction and the side close to a glass plate incoming direction, a plurality of partitions (10) arranged alternately are longitudinally arranged in the wind box (1), ventilation openings are reserved between the partitions (10) and the wind box (1), the ventilation openings of adjacent partitions (10) are respectively located at the upper and lower sides of the wind box (1), an air inlet pipe (5) and an air outlet pipe are respectively arranged on the two side panels (2), and the air inlet pipe (5) is connected to the air inlet end of the air duct machine.

2. The temperature and pressure control mechanism in a float glass annealing furnace according to claim 1, characterized in that: A plurality of partition plates (6) are arranged between the two side plates (2), and the interval between adjacent partition plates (6) is 80 to 200 cm.

3. The temperature and pressure control mechanism in a float glass annealing furnace according to claim 1, characterized in that: A water-cooling tank (7) is arranged in the wind box (1) at the partition plate (6), and the water-cooling tank (7) comprises a horizontally arranged cylindrical water tank and a water wheel (8) rotatably connected in the water tank, and the water inlet end and the water outlet end of the water-cooling tank (7) are respectively connected to a cold water source and a hot water return pipe.

4. The temperature and pressure control mechanism in a float glass annealing furnace according to claim 3, characterized in that: A plurality of heat conducting plates (9) are arranged at intervals outside the water-cooling water tank (7).

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