CN106830652A - The pipe-produced glass bottle method for annealing that can save energy - Google Patents

Abstract

The invention discloses a kind of pipe-produced glass bottle method for annealing that can save energy, the method is by furnace chamber of annealing, heat circulating system, the fixed beam and the matched movable step rate of a row of two row parallel arrangements are realized, specifically include and the vial with waste heat is introduced into fixed beam V-groove from bottle-making machine, vial order in fixed beam gradually feeds, vial preheating, heating and the step such as insulation and cooling.With production process be combined the annealing process of pipe-produced glass bottle by the present invention, make full use of product itself waste heat, it is aided with transfer system in efficient thermal cycle and stove, automation continuous annealing is directly carried out after bottle forming, it is small with heat loss, furnace temperature stabilization, bottle is heated evenly, the small advantage of energy waste.

Description

An annealing method for controlled glass bottles capable of saving energy and reducing consumption

technical field

The invention relates to a glass bottle annealing method, in particular to a control glass bottle annealing method capable of saving energy and reducing consumption.

Background technique

After the glass bottle is formed, annealing treatment is usually required to eliminate the internal stress generated during the rapid cooling of the forming. At present, the mesh belt annealing furnace is mainly used in conjunction with the bottle making machine. Since the mesh belt is mostly made of 1Cr13 material, it is easy to cause rust spots on the contact between the bottle wall and the mesh belt, and the moving mesh belt circulates through the high temperature zone of the annealing furnace and The room temperature area outside the furnace is repeatedly heated and cooled. On the one hand, various parts of the bottle body are heated unevenly, causing the risk of bottle explosion. At the same time, it causes heat loss and energy waste. In addition, most of the existing annealing furnaces for glass bottles adopt a single-layer insulation wall structure, and the temperature zone of the furnace is single. It is often necessary to use other equipment to preheat and slowly cool the glass bottles. There is no effective waste heat recycling measure, and the potential of the annealing furnace cannot be fully utilized. , cost increases.

Contents of the invention

In view of this, the object of the present invention is to solve the problems and deficiencies in the working process of the above-mentioned mesh-belt glass bottle annealing furnace, and to provide a method that can use its own waste heat to realize thermal cycle and segmental temperature control, effectively reducing heat loss and energy consumption. Regulated glass vial annealing method.

In order to achieve the above object, the technical solution adopted in the present invention is: an annealing method for controlled glass bottles that can save energy and reduce consumption. It is realized by entering the beam, wherein the annealing furnace chamber is arranged in a functional order from the entrance to the exit as a preheating zone, a heating and heat preservation zone, and a slow cooling zone; the heat circulation system is set on the upper part of the annealing furnace working area, and is characterized by an internal interlayer Combustion-supporting air introduced from the outside by the combustion-supporting fan and the anoxic hot exhaust gas drawn from the work area flow along alternately arranged independent interlayer channels with one end closed, heat exchange and participate in the heat cycle of the annealing furnace; the fixed beam and the movable step The beam is covered with heat-insulating material, and is located inside the closed furnace chamber of the annealing furnace as a whole; the row of movable walking beams is arranged between two parallel fixed beams and a certain gap is reserved, and the three are provided with V-shaped grooves with equal spacing; The movable walking beam is driven by a motor arranged at the lower part of the furnace body, and performs a reciprocating motion of rising, feeding, falling and retreating within a step; the method includes the following steps:

(1) Bottle receiving on the fixed beam: the glass bottle with waste heat rolls down from the exit of the bottle making machine to the first V-shaped groove of the fixed beam through the blanking chute;

(2) The glass bottles are fed sequentially on the fixed beam: start the movable walking beam, and realize the glass bottle from the first V-shaped groove of the fixed beam to the In the future, the successive feed movements of each V-shaped groove;

(3) Glass bottle preheating: the movable walking beam transfers the glass bottle to the preheating zone of the annealing furnace, and the bottle body is preheated by the hot exhaust gas blown from the end of the preheating zone and the heat radiation of the heating and holding zone;

(4) Glass bottle heating and heat preservation: the movable walking beam transfers the glass bottle to the heating and heat preservation area of the annealing furnace, and gradually heats up to the annealing temperature through radiant heat and heats the pre-designed travel time for annealing;

(5) Glass bottle cooling: the movable walking beam transfers the glass bottle to the slow cooling zone, and the temperature of the bottle body gradually decreases with the help of the heat dissipation interlayer of the thermal cycle system, and enters the bottle collector from the slope of the last station of the fixed beam, and finally Complete the entire annealing process.

Further, the side wall and the top of the thermal cycle system are covered with insulation materials, and a hot waste gas outlet is opened at the end of the preheating zone of the annealing furnace, and a hot waste gas inlet is opened at the beginning of the slow cooling zone. Correspondingly, the A combustion-supporting air inlet is provided at one end of the thermal cycle system above the hot exhaust gas inlet, and a combustion-supporting air outlet is provided at the top of the combustion chamber below the hot exhaust gas outlet, and the hot exhaust gas and combustion-supporting air flow along independent interlayer channels in the thermal cycle system .

Further, the sequential feeding of the glass bottles on the fixed beam in step (2) is realized by four action cycles of the movable walking beam within one moving step: ① The movable walking beam starts and rises: the movable walking beam initially Stand still at the bottom dead center position under the fixed beam. After the walking beam starts to rise slowly and steadily, lift the glass bottle at the first station away from the V-shaped groove of the fixed beam and limit it to the V-shaped groove corresponding to the movable walking beam. ② Feed of the movable walking beam: After the movable walking beam rises to the top dead center, the glass bottle is lifted and displaced one step along the horizontal direction to the top dead center position on the left, and at the same time the next glass bottle enters The first station of the fixed beam; ③ The movable walking beam descends: the movable walking beam descends from the top dead center position on the left side to the bottom dead center position below the fixed beam. When the movable walking beam descends through the fixed beam, the glass bottle is The V-groove on the second station of the fixed beam takes over, and realizes the horizontal displacement of one step of the glass bottle on the fixed beam; ④ Retraction of the movable walking beam: the movable walking beam moves back horizontally from the bottom dead center position on the left side. The bottom dead center on the right side is ready to start ① operation.

Further, the top of the furnace body in the preheating zone in step (3) is a slope with a low outside and a high inside, a waste gas exhaust fan is installed on the top of the entrance side, and a hot waste gas outlet is provided on the top of the end of the preheating zone near the heating and heat preservation zone. The temperature in the preheating zone along the feeding direction rises uniformly from 100 ℃ to about 550 ℃, and the preheating zone can be equipped with 5-10 V-shaped grooves according to the temperature rise needs, and the temperature of the hot exhaust gas blown from the end of the preheating zone is 300-400 ℃.

Further, the heating and heat preservation area in step (4) is arranged with 6-12 V-shaped grooves, and a temperature measurement system is installed at the same time, and the temperature data of the heating and heat preservation area is fed back to the control computer in real time, and the temperature in the combustion chamber is further adjusted in real time through the temperature control system. The combustion intensity of the flame nozzle ensures that the temperature in the heating and holding zone is stable at 600-700 °C.

Further, the top of the slow cooling zone described in step (5) is separated from the heat circulation system by using a heat-resistant steel plate, and the top of the slow cooling zone is provided with an outlet FH of the slow cooling zone for hot exhaust gas connected to the combustion chamber, and the outlet is along the feeding direction A hot exhaust gas inlet is provided, and the temperature of the slow cooling zone drops uniformly from 600 °C to about 100 °C along the feeding direction, and 8-15 V-shaped grooves can be set in the slow cooling zone according to the cooling time, at the beginning of the slow cooling zone The temperature of the extracted hot exhaust gas is 500-600 ℃.

Further, a combustion chamber is provided above the heating and heat preservation area and below the heat circulation system, the side walls and top of which are covered with thermal insulation material 8, and the bottom is a silicon carbide flame shield. There are 3-9 evenly arranged combustion chamber side walls. The flame nozzle directly heats the silicon carbide plate, and the top of the combustion chamber near the preheating zone is provided with a combustion air outlet that communicates with the thermal cycle system.

Further, the length of the slow cooling zone is greater than the length of the heating and holding zone.

Further, the interlayer channels of the heat circulation system are separated by pure copper thin plates.

Compared with prior art, the beneficial effect that this method has is:

(1) The heat circulation system designed by the present invention has remarkable temperature control effects in the transitional section of the preheating zone and the slow cooling zone, and utilizes the radiation and conduction heat exchange of the hot and cold air in the thermal cycle interlayer circuit to gradually rise and slow down the preheating zone. The gradually decreasing temperature gradient in the cold zone avoids sudden temperature changes when the glass bottle enters and exits the heating zone of the annealing furnace, resulting in unstable annealing quality and poor product consistency;

(2) The thermal circulation system designed by the present invention changes the current situation that the bottle body must be preheated through additional heating measures in the prior art, and efficiently utilizes the waste heat of the exhaust gas to preheat the glass bottle initially entering the furnace body, which can effectively stabilize the temperature of the bottle body and save energy The effect is obvious, and the thermal efficiency is greatly improved;

(3) The traditional mesh belt structure is replaced by fixed beams and movable walking beams installed inside the annealing furnace working space to realize the transfer of glass bottles in the annealing furnace and effectively avoid the bottle carrying system body due to repeated entry and exit into the high temperature zone of the furnace The heat loss and temperature fluctuation caused by the low temperature zone outside the furnace can significantly improve the temperature uniformity of the furnace body and the annealing quality of glass bottles while reducing heat loss;

(4) The glass bottle is transferred through the V-shaped groove set on the fixed beam and the movable walking beam. The structural main body where the V-shaped groove is located is matched with the beam body with a dovetail, which can realize quick replacement and reduce downtime and maintenance time. It can also be equipped with V-shaped grooves with specific spacing and size according to the needs. By coordinating with the stepping spacing of the movable walking beam, the transfer requirements of glass bottles of different shapes and sizes can be realized, which greatly expands the size range of glass bottles applicable to the annealing furnace, effectively The production flexibility of the annealing furnace is improved.

Description of drawings

Fig. 1 is a structural schematic diagram of the device adopted in the present invention, in which the movable walking beam is in the ascending section.

Fig. 2 is a schematic diagram of the thermal cycle system B, C, D and E shown in Fig. 1 .

Figure 3 is a schematic diagram of the structure of the movable walking beam and the fixed beam.

Serial numbers in the figure: 1-machine base, 2-fixed beam slope, 3-movable walking beam, 4-glass bottle, 5-combustion fan, 6-slow cooling zone, 7-thermal circulation system, 8-insulation material, 9 -Heating and heat preservation area, 10-flame nozzle, 11-SiC flame shield, 12-preheating area, 13-exhaust gas fan, 14-combustion chamber, 15-fixed beam, 16-combustion air inlet, 17-hot exhaust gas Interlayer closed end, 18-hot exhaust gas inlet, 19-combustion air interlayer closed end, 20-hot exhaust gas outlet, 21-combustion air outlet, 22-V-shaped groove, 23-movable walking beam base, 24-fixed beam base, 25 - Dovetail groove.

The entrances and exits of the thermal cycle system 7 shown in Figure 1 are: FG-hot exhaust gas inlet end face, JK-hot exhaust gas outlet end face, MN-combustion air inlet end face, JL-combustion air outlet end face, FH-hot exhaust gas slow cooling zone exit.

detailed description

As shown in Fig. 1, Fig. 2 and Fig. 3, the annealing method for controlling glass bottle 4 that can save energy and reduce consumption comprises the following steps: 5-10 minutes before the glass bottle 4 starts to enter the annealing furnace, open the flame of the annealing furnace combustion chamber 14 in advance The nozzle 10, the combustion-supporting fan 5 and the exhaust fan 13 make the thermal cycle system 7 work normally, and after the temperature of the heating and heat preservation zone 9 is stabilized, the glass bottle 4 with waste heat is rolled from the exit of the bottle making machine to the fixed beam through the blanking chute 15 The first V-shaped groove 22, and then the movable walking beam 3, which initially rests at the bottom dead center position under the fixed beam 15, starts under the action of the motor and begins to rise slowly and steadily. During the rising process, the glass bottle at the first station 4 Lift the V-shaped groove 22 away from the fixed beam 15, and limit it in the V-shaped groove 22 corresponding to the movable walking beam 3. The movable walking beam 3 rises to the top dead center, and then the movable walking beam 3 lifts the glass The bottle 4 is moved horizontally by one step to the top dead center on the left, and at the same time the next glass bottle enters the first station of the fixed beam 15 to be moved; the movable walking beam 3 further descends from the top dead center on the left At the bottom dead center position below the fixed beam 15, when the movable walking beam 3 descends through the fixed beam 15, the glass bottle 4 is accepted by the V-shaped groove 22 on the second station of the fixed beam 15, and the glass bottle 4 is fixed The horizontal displacement of a step distance on the beam 15, and then the movable walking beam 3 is horizontally translated from the bottom dead center position on the left side back to the bottom dead center on the right side to prepare for the next glass bottle 4 to move; The motor speed on the frame 1 cooperates with the beat of the bottle making machine to realize that the glass bottles 4 to be annealed enter the preheating zone 12 of the annealing furnace smoothly and sequentially.

In this embodiment, the top of the furnace body in the preheating zone 12 is a slope with a low outside and a high inside, and eight V-shaped grooves 22 work stations are arranged in this zone. The combustion-supporting cold air blown by the combustion-supporting blower 5 enters the thermal cycle system 7 through the combustion-supporting air inlet end face MN, as shown in the view of FIG. The closed end 17 of the hot exhaust gas interlayer. Combustion air and hot exhaust gas flow in a directional flow in the thermal cycle system 7, and heat is fully exchanged in the process. Then the hot exhaust gas is discharged to the preheating zone 12 through the hot exhaust gas outlet 20 from the hot exhaust gas outlet end face JK (direction D in FIG. 2 ), and the temperature of the hot exhaust gas is about 350-400 °C at this time. According to the distance between the V-shaped groove 22 and the hot exhaust gas outlet end surface JK and the entrance of the heating and holding zone 9, the temperature of the preheating zone 12 gradually rises from about 100 °C at the entrance of the annealing furnace to about 500 °C at the entrance of the heating and holding area 9.

The glass bottle 4 continues to step into the heating and heat preservation zone 9 with the periodic movement of the movable walking beam 3, and this zone is provided with 9 V-shaped grooves 22 stations. In the thermal cycle system 7, the combustion-supporting air that has undergone sufficient heat exchange enters the combustion chamber 14 where the nozzle is located to support combustion and heat up from the combustion-supporting air outlet end face JL (direction E of FIG. 2 ) through the combustion-supporting air outlet 21, and the newly entered combustion-supporting air Pushed by the airflow, it enters the slow cooling zone 6 through the outlet FH of the hot exhaust gas slow cooling zone, and at the same time, a part of the hot exhaust gas enters the thermal cycle system 7 from the hot exhaust gas inlet end face FG through the hot exhaust gas inlet 18 (direction C in Fig. 2 ), and the combustion air inlet After the combustion-supporting cold air entering the end surface MN is fully heat-exchanged, the cooled hot exhaust gas is discharged into the preheating zone 12 from the hot exhaust gas outlet end surface JK, and the heated combustion-supporting air enters the combustion chamber 14 from the combustion-supporting air outlet end surface JL, thereby realizing heat dissipation. cycle. The hot waste gas inlet end face FG, as shown in the view from the C direction of the accompanying drawing 2, is characterized in that the hot waste gas inlet 18 and the closed end 19 of the combustion air interlayer to prevent the combustion air from escaping are alternately provided on the end face; There are three flame nozzles 10 on the two side walls of the chamber 14, which directly heat the silicon carbide flame shield 11 and radiate the heat into the heating and holding zone 9 of the annealing furnace. The temperature data of the heating and holding zone 9 are fed back in real time through the temperature measurement system To the control computer, and further adjust the combustion intensity of the flame nozzle 10 in the combustion chamber 14 in real time through the temperature control system to ensure that the temperature of the heating and holding zone 9 is constant at 650 ± 10 °C.

The glass bottle 4 completes the heating and heat preservation process after the set step distance residence time, and then continues to step into the slow cooling zone 6 with the movable walking beam 3. This zone is provided with 10 V-shaped grooves 22 stations. At this time, most of the heat Entering the thermal cycle system 7 above the slow cooling zone 6, the furnace temperature gradually drops from about 600°C at the outlet end of the heating and holding zone 9 to about 100°C at the end of the slow cooling zone 6 along the feeding direction of the glass bottle 4, and finally the glass bottle 4 passes through the fixed The fixed beam slope 2 at the rear of the last V-shaped groove 22 of the beam 15 enters the bottle collector, and finally completes the entire annealing process.

The structural schematic diagram of movable walking beam and fixed beam is as shown in accompanying drawing 3, wherein the assembling parts of fixed beam 15 and movable walking beam 3 working parts are all processed into dovetail groove 25 structures, and are connected with fixed beam base 24 and movable walking beam The assembly shape of the base 23 is matched to realize the fast replacement of the working parts of the fixed beam 15 and the movable walking beam 3 after normal failure and to match the positioning requirements of glass bottles of different sizes during annealing.

Adopting the annealing method of the control glass bottle that can save energy and reduce consumption proposed by the present invention, and carry out the annealing treatment of the conventional medical control glass bottle according to the reasonable value of the parameters defined in the claims, compared with the traditional mesh belt type electric heating annealing furnace, the beneficial effect is very good significantly. According to preliminary calculations, the traditional mesh-belt electric heating annealing furnace needs about 30 degrees of electricity for annealing 10,000 medicines, equivalent to about 3.69 kilograms of standard coal; the method of the present invention and its optimal process parameters require 1.80 cubic meters of natural gas, equivalent to about 2.21 kilograms Standard coal, the energy-saving rate is about 40.1%, based on the annual production of 500 million medicinal glass bottles, the annual energy saving is about 74 tons of standard coal, and the effect of energy saving and consumption reduction is remarkable.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (9)

1. An annealing method for controlled glass bottles that can save energy and reduce consumption. The method is realized through an annealing furnace chamber, a thermal cycle system, two rows of fixed beams arranged in parallel and a row of movable walking beams matched with it, wherein the annealing furnace chamber is from the entrance From the exit to the exit, the preheating zone, the heating and heat preservation zone and the slow cooling zone are arranged according to the functional order; the heat circulation system is arranged on the upper part of the annealing furnace working area, and its characteristic is the sandwich structure through the inside, the combustion air introduced from the outside through the combustion air fan and the The anoxic hot waste gas extracted from the working area flows along alternately arranged independent interlayer channels with one end closed, exchanges heat and participates in the heat cycle of the annealing furnace; Close the interior of the furnace cavity; the row of movable walking beams is arranged between two parallel fixed beams and a certain gap is reserved, and the three are all provided with V-shaped grooves with equal spacing; the movable walking beams are arranged at the bottom of the furnace body. Driven by a motor, the reciprocating motion of rising, feeding, falling and retreating is performed within a step; the method includes the following steps: 1) Bottle receiving on the fixed beam: the glass bottle with waste heat rolls down from the exit of the bottle making machine to the first V-shaped groove of the fixed beam through the blanking chute; 2) The glass bottles are fed sequentially on the fixed beam: start the movable walking beam, and realize the glass bottles from the first V-shaped groove of the fixed beam to the following The successive feed motion of each V-groove; 3) Glass bottle preheating: the movable walking beam transfers the glass bottle to the preheating zone of the annealing furnace, and the bottle body is preheated by the hot exhaust gas blown from the end of the preheating zone and the heat radiation of the heating and holding zone; 4) Glass bottle heating and heat preservation: the movable walking beam transfers the glass bottle to the heating and heat preservation area of the annealing furnace, and gradually heats up to the annealing temperature through radiant heat and heats the pre-designed travel time for annealing; 5) Glass bottle cooling: the movable walking beam transfers the glass bottle to the slow cooling zone, and the temperature of the bottle body is gradually reduced by means of the heat dissipation interlayer of the thermal circulation system, and enters the bottle collector from the slope of the last station of the fixed beam, and finally completes the entire annealing process. 2. The annealing method for controlled glass bottles capable of saving energy and reducing consumption as claimed in claim 1, characterized in that: the side wall and top of the thermal cycle system are covered with heat-insulating materials, and annealing furnace preheating zone end top is set There is a hot exhaust gas outlet, and a hot exhaust gas inlet is provided at the beginning of the slow cooling zone. Correspondingly, a combustion-supporting air inlet is provided at one end of the thermal cycle system above the hot exhaust gas inlet, and a combustion-supporting air inlet is provided at the top of the combustion chamber below the hot exhaust gas outlet. The air outlet, the hot exhaust gas and the combustion air respectively flow along independent interlayer channels in the thermal cycle system. 3. The energy-saving and consumption-reducing control glass bottle annealing method as claimed in claim 1, characterized in that: the glass bottles in step (2) are sequentially fed on the fixed beam and rely on the movable walking beam in a moving step The four action cycles inside are realized: ① The movable walking beam starts and rises: the movable walking beam initially stops at the bottom dead center position under the fixed beam, and after the walking beam starts to rise slowly and steadily, the glass located at the first station The bottle lifts away from the V-shaped groove of the fixed beam, and is restricted in the V-shaped groove corresponding to the movable walking beam; ② Feeding of the movable walking beam: After the movable walking beam rises to the top dead center, it lifts the glass bottle along the horizontal direction The feed displacement is one step to the left top dead center position, and at the same time the next glass bottle enters the first station of the fixed beam; ③ The movable walking beam descends: the movable walking beam descends from the left top dead center position to the fixed beam At the bottom dead center position under the beam, when the movable walking beam descends through the fixed beam, the glass bottle is accepted by the V-shaped groove on the second station of the fixed beam, and realizes the horizontal displacement of the glass bottle on the fixed beam by one step; ④ Retraction of the movable walking beam: The movable walking beam moves horizontally from the bottom dead center on the left side back to the bottom dead center on the right side to prepare for operation ①. 4. The annealing method for controlled glass bottles capable of saving energy and reducing consumption according to claim 1, characterized in that in step (3), the top of the furnace body in the preheating zone is a slope with a low outside and a high inside, and the top of the entrance side is provided with Exhaust gas fan, with a hot exhaust gas outlet on the top of the preheating zone near the heating and heat preservation zone, the temperature in the preheating zone rises uniformly from 100 ℃ to about 550 ℃ along the feeding direction, and the preheating zone can be set according to the heating needs 5-10 V-shaped grooves, the temperature of the hot exhaust gas blown from the end of the preheating zone is 300-400 ℃. 5. The annealing method for controlled glass bottles capable of saving energy and reducing consumption according to claim 1, characterized in that: the heating and holding zone in step (4) is arranged with 6-12 V-shaped grooves, and a temperature measuring system is also installed at the same time. And the temperature data of the heating and holding area is fed back to the control computer in real time, and the combustion intensity of the flame nozzle in the combustion chamber is further adjusted in real time through the temperature control system to ensure that the temperature of the heating and holding area is stable at 600-700 °C. 6. The annealing method for controlled glass bottles capable of saving energy and reducing consumption according to claim 1, characterized in that in step (5), the top of the slow cooling zone is separated from the thermal cycle system by a heat-resistant steel plate, and the top of the slow cooling zone starts There is an outlet of the hot exhaust gas slow cooling zone connected to the combustion chamber, and a hot exhaust gas inlet is provided along the feeding direction beside the outlet. The zone can be equipped with 8-15 V-shaped grooves according to the cooling time, and the temperature of the hot exhaust gas extracted at the beginning of the slow cooling zone is 500-600 °C. 7. The annealing method for controlled glass bottles capable of saving energy and reducing consumption as claimed in claim 1, characterized in that: a combustion chamber is arranged above the heating and heat preservation zone and below the heat circulation system, the side walls and top of which are covered with thermal insulation materials, and the bottom It is a silicon carbide flame shield, 3-9 flame nozzles are evenly arranged on the side wall of the combustion chamber to directly heat the silicon carbide plate, and the top of the combustion chamber near the preheating zone is provided with combustion air that communicates with the thermal cycle system Export. 8. The annealing method for controlled glass bottles capable of saving energy and reducing consumption according to claim 1, characterized in that: the length of the slow cooling zone is greater than the length of the heating and holding zone. 9. The annealing method for controlled glass bottles capable of saving energy and reducing consumption according to claim 1, characterized in that: the interlayer channels of the thermal cycle system are separated by thin pure copper plates.