Energy-saving glass bottle raw material preheating device

Abstract

The utility model discloses an energy -saving glass bottle raw material preheating device, including vertical preheating jar body, spiral flow guide heat transfer mechanism and stirring anti -blocking mechanism, the top of vertical preheating jar body is equipped with raw material feed inlet and waste gas inlet. Spiral flow guide heat transfer mechanism is located in preheating jar body inside, spiral flow guide heat transfer mechanism includes the inner layer flow guide cylinder of coaxial cover and outer layer spiral flow guide board, and the spiral blade of outer layer spiral flow guide board forms raw material downlink channel with preheating jar body inner wall. In combination with heat -preserving jacket and steam recovery, the residual heat utilization rate is promoted to 70% or above, and unit energy consumption reduces 30%, has the effect of efficient energy -conserving, and the waste gas is discharged after dust removal, and the environmental protection effect is good, and vibration unloading and temperature control valve ensure that the discharge is stable, and improve production continuity.

Description

TECHNICAL FIELD

[0001] The utility model relates to raw material preheating device technical field, specifically is a kind of energy-saving glass bottle raw material preheating device. BACKGROUND

[0002] In the glass bottle production process, raw material preheating is the key link to improve the efficiency of the furnace, reduce energy consumption. The traditional preheating device is mostly electric heating or fuel direct combustion mode, there is high energy consumption, low thermal efficiency problem, and single flat plate type flow guide structure is easy to cause raw material local accumulation, heat exchange area is limited, preheating uniformity is poor. In addition, glass batch (such as quartz sand, soda ash) is easy to stick together under high temperature environment, and the traditional device lacks active anti-blocking measures, and frequent shutdown cleaning is needed, which seriously affects the production continuity. SUMMARY

[0003] In order to overcome the deficiencies of the prior art, the utility model provides an energy-saving glass bottle raw material preheating device, which can effectively solve the problems raised in the background art.

[0004] The utility model solves the technical problems adopted by the technical scheme:

[0005] An energy-saving glass bottle raw material preheating device, comprising a vertical preheating tank body, a spiral flow guide heat exchange mechanism and a stirring anti-blocking mechanism, the top of the vertical preheating tank body is provided with a raw material inlet and a waste gas inlet;

[0006] The bottom of the vertical preheating tank body is also provided with a preheated raw material outlet, the spiral flow guide heat exchange mechanism is arranged inside the preheating tank body, the spiral flow guide heat exchange mechanism comprises an inner layer flow guide cylinder and an outer layer spiral flow guide plate which are coaxially sleeved, the spiral blades of the outer layer spiral flow guide plate form a raw material downward channel with the inner wall of the preheating tank body, and the inner layer flow guide cylinder and the outer layer spiral flow guide plate form a waste gas upward channel.

[0007] The stirring anti-blocking mechanism is arranged on the central axis of the preheating tank body, the stirring anti-blocking mechanism comprises a driving motor, a stirring shaft and a plurality of radial stirring paddles, and the stirring shaft is located inside the inner layer flow guide cylinder.

[0008] As a further description of the above technical scheme, the spiral inclination angle of the outer layer spiral flow guide plate is 25°-35°, and the blade surface of the outer layer spiral flow guide plate is provided with axially distributed corrugated protrusions.

[0009] As a further description of the above technical scheme, the side wall of the inner layer flow guide cylinder is uniformly provided with a plurality of breathable micropores, and the pore diameter is 1-3mm.

[0010] As a further description of the above technical scheme, the stirring shaft penetrates the bottom of the preheating tank body through a magnetic sealing sleeve, and the end of the radial stirring paddle is provided with a detachable wear-resistant ceramic scraper.

[0011] As the further description of the above technical scheme, the waste gas collecting hood is communicated with the waste gas inlet, and is used for connecting the high-temperature waste gas discharged by the glass melting furnace.

[0012] As the further description of the above technical scheme, the steam recovery port is communicated with the external waste heat boiler, and the heat preservation jacket is filled with ceramic fiber heat preservation cotton.

[0013] As the further description of the above technical scheme, the waste gas rising channel is communicated with the cyclone dust collector at the top, and the waste gas after dust removal is discharged through the exhaust port.

[0014] As the further description of the above technical scheme, the preheating raw material outlet is provided with the vibration unloader, and the temperature sensor and the pneumatic butterfly valve are arranged at the outlet of the vibration unloader.

[0015] Compared with the prior art, the energy-saving glass bottle raw material preheating device has the following beneficial effects at least one of the following beneficial effects:

[0016] The energy-saving glass bottle raw material preheating device has the following beneficial effects at least one of the following beneficial effects:

[0017] Through the countercurrent heat exchange between the 400-600 DEG C melting furnace waste gas and the raw material, in combination with the heat preservation jacket and the steam recovery, the waste heat utilization rate is increased to more than 70%, the unit energy consumption is reduced by 30%, and the high-efficiency energy-saving effect is achieved; the spiral guide plate has an inclination angle of 25 DEG to 35 DEG and a corrugated protrusion extension path, the gas-solid contact is strengthened through the air-permeable micropore, the preheating temperature difference is less than or equal to ± 5 DEG C, and the heat exchange is uniform and efficient; the anti-blocking property is strong, the agitator blade and the wear-resistant scraper reduce caking, the magnetic seal is suitable for high-temperature dust, and the blockage rate is reduced by 90%; the waste gas is discharged after dust removal, and the environmental protection effect is good; the vibration unloading and the temperature control valve ensure stable discharging, and the production continuity is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the energy-saving glass bottle raw material preheating device.

[0019] Figure 2 It is a first side structure schematic view of the energy-saving glass bottle raw material preheating device.

[0020] Figure 3 It is a second side structure schematic view of the energy-saving glass bottle raw material preheating device.

[0021] Figure 4 It is a perspective structure schematic view of the energy-saving glass bottle raw material preheating device.

[0022] Reference numerals in the drawings:

[0023] 1, vertical preheating tank; 101, preheating raw material outlet; 102, steam recovery port; 103, raw material inlet; 104, waste gas inlet; 105, vibrating unloader; 106, cyclone dust collector; 2, stirring anti-blocking mechanism; 201, driving motor; 202, stirring shaft; 203, stirring blade; 204, magnetic sealing sleeve; 205, wear-resistant ceramic scraper; 3, spiral flow guide heat exchange mechanism; 301, inner layer flow guide cylinder; 302, heat preservation jacket; 303, outer layer spiral flow guide plate; 304, waste gas collecting hood. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] As shown in the drawings, Figures 1-4 The present application provides an energy-saving glass bottle raw material preheating device, which comprises a vertical preheating tank 1, a spiral flow guide heat exchange mechanism 3 and a stirring anti-blocking mechanism 2.

[0026] The bottom of the vertical preheating tank 1 is also provided with a preheating raw material outlet 101, the spiral flow guide heat exchange mechanism 3 is arranged inside the preheating tank, and the spiral flow guide heat exchange mechanism 3 comprises an inner layer flow guide cylinder 301 and an outer layer spiral flow guide plate 303 which are coaxially sleeved, the spiral blades of the outer layer spiral flow guide plate 303 form a raw material downward channel with the inner wall of the preheating tank, and the inner layer flow guide cylinder 301 and the outer layer spiral flow guide plate 303 form a waste gas upward channel.

[0027] 400-600℃ high-temperature waste gas discharged by a glass melting furnace enters from the top waste gas inlet 104 and flows downward along the waste gas upward channel (between the inner layer flow guide cylinder 301 and the outer layer spiral flow guide plate 303). At the same time, raw materials (glass batch) fall into the raw material downward channel (between the spiral blades and the tank wall) from the top inlet, and slowly move downward along the spiral flow guide plate under the action of gravity. Reverse flow heat exchange is formed: the high-temperature waste gas heats the downward moving raw materials, maximizing the heat transfer efficiency of the temperature difference.

[0028] The stirring anti-blocking mechanism 2 is arranged on the central axis of the preheating tank, and the stirring anti-blocking mechanism 2 comprises a driving motor 201, a stirring shaft 202 and a plurality of radial stirring blades 203, and the stirring shaft 202 is located inside the inner layer flow guide cylinder 301.

[0029] The glass bottle raw material enters from the feed inlet at the top of the vertical preheating tank body 1 and flows along the raw material downward channel formed by the outer spiral guide plate 303 and the inner wall of the tank body. Due to the 25°-35° inclination angle of the outer spiral guide plate 303, the raw material slowly descends along the spiral track under the action of gravity and fully contacts the outer spiral guide plate 303 and the inner wall of the tank body in the process. At the same time, the radial stirring paddle 203 of the anti-blocking mechanism 2 rotates under the drive of the driving motor 201 to stir the raw material inside and near the inner layer guide cylinder 301, avoiding accumulation and caking. The wear-resistant ceramic scraper 205 at the end can clean the attached raw material on the inner wall of the inner layer guide cylinder 301, ensuring smooth passage.

[0030] The high-temperature waste gas discharged from the glass melting furnace enters through the waste gas inlet 104 and mainly flows upward along the waste gas upward channel between the inner layer guide cylinder 301 and the outer spiral guide plate 303. Part of the waste gas penetrates into the raw material downward channel through the 1-3mm air-permeable micropores in the side wall of the inner layer guide cylinder 301 and directly contacts and exchanges heat with the raw material; the remaining waste gas transfers heat to the descending raw material through the heat conduction and radiation of the outer spiral guide plate 303 in the upward process. The heat-exchanged waste gas enters the cyclone dust collector 106 at the top for purification and is finally discharged from the exhaust port.

[0031] The heat-insulating jacket 302 reduces heat loss, and the ceramic fiber heat-insulating cotton inside it reduces heat loss; the waste gas collecting hood 304 collects high-temperature waste gas and stabilizes the introduction device, improving the waste heat utilization rate; the vibrating discharger 105 cooperates with the temperature sensor and the pneumatic butterfly valve to adjust the discharging speed according to the raw material preheating temperature, ensuring uniform discharging.

[0032] Further, the spiral inclination angle of the outer spiral guide plate 303 is 25°-35°, and the blade surface of the outer spiral guide plate 303 is provided with axially distributed corrugated protrusions. The 25°-35° inclination angle of the outer spiral guide plate 303 matches the descending speed of the raw material with the ascending speed of the waste gas, prolonging the heat exchange time; the corrugated protrusions on the blade surface increase the disturbance of the raw material, avoiding local accumulation, and the heat exchange area is increased by 40% compared with the flat plate guide structure.

[0033] Further, the side wall of the inner layer guide cylinder 301 is uniformly provided with a plurality of air-permeable micropores with a pore diameter of 1-3mm. The 1-3mm air-permeable micropores of the inner layer guide cylinder 301 allow part of the waste gas to penetrate into the raw material, forming "gas-solid" direct contact heat exchange, combined with indirect heat exchange of the spiral channel, to control the raw material preheating temperature difference within ±5℃.

[0034] Further, the stirring shaft 202 penetrates the preheating tank body bottom through the magnetic sealing sleeve 204, and the radial stirring paddle 203 is provided with a detachable wear-resistant ceramic scraper 205 at the end. The radial stirring paddle 203 of the stirring anti-blocking mechanism 2 directly acts on the inside of the inner layer guide cylinder 301 and the raw material channel, cooperates with the detachable wear-resistant ceramic scraper 205 at the end, effectively removes the viscous raw materials (such as quartz sand, soda ash, etc.) attached to the cylinder wall and spiral plate, and reduces the blocking rate. The magnetic sealing sleeve 204 avoids the leakage problem of the traditional mechanical seal, adapts to high temperature (300-500℃) and dust environment, and prolongs the sealing life.

[0035] Further, it further comprises a waste gas collecting hood 304 and a heat preservation jacket 302 wrapped on the outer wall of the preheating tank body, the waste gas collecting hood 304 is communicated with the waste gas inlet 104, and is used for connecting the high-temperature waste gas discharged by the glass melting furnace. The heat preservation jacket 302 is provided with a steam recovery port 102 at the top, the steam recovery port 102 is communicated with an external waste heat boiler, and the heat preservation jacket 302 is filled with ceramic fiber insulation cotton.

[0036] The high-temperature waste gas discharged by the glass melting furnace is used as a heat source to replace the traditional electric heating or fuel heating, realizes the industrial waste heat cascade utilization, and reduces the unit raw material preheating energy consumption. The combination of the heat preservation jacket 302 and the ceramic fiber insulation cotton controls the tank body heat loss rate within 5%, and the steam recovery port 102 connected with the waste heat boiler can further recover the secondary waste heat in the jacket, forming energy recycling.

[0037] Further, the waste gas rising channel is communicated with a cyclone dust collector 106 at the top, and the waste gas after dust removal is discharged through an exhaust port. The waste gas enters the cyclone dust collector 106 after heat exchange through the spiral channel, the dust removal rate is high, and the industrial waste gas emission standard is met; after the heat energy of the high-temperature waste gas is recovered, the exhaust temperature is reduced to below 100℃, and the thermal pollution is reduced.

[0038] Further, the preheating raw material outlet 101 is provided with a vibrating feeder 105, and the vibrating feeder 105 is provided with a temperature sensor and a pneumatic butterfly valve at the outlet. The temperature sensor and the pneumatic butterfly valve of the preheating raw material outlet 101 are linked, and the raw material preheating temperature can be adjusted in real time according to the subsequent melting furnace demand. The frequency of the vibrating feeder 105 is adjustable, and the discharging demand of raw materials with different particle sizes is met.

[0039] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. An energy-saving glass bottle raw material preheating device, characterized in that: It includes a vertical preheating tank, a spiral flow heat exchange mechanism, and a stirring and anti-clogging mechanism. The top of the vertical preheating tank is provided with a raw material inlet and a waste gas inlet. The bottom of the vertical preheating tank is also provided with a preheating raw material outlet. The spiral flow guiding heat exchange mechanism is located inside the preheating tank. The spiral flow guiding heat exchange mechanism includes an inner layer guide cylinder and an outer layer spiral guide plate coaxially sleeved. The spiral blades of the outer layer spiral guide plate and the inner wall of the preheating tank form a raw material downward channel. The inner layer guide cylinder and the outer layer spiral guide plate form a waste gas upward channel. The stirring anti-clogging mechanism is installed through the central axis of the preheating tank. The stirring anti-clogging mechanism includes a drive motor, a stirring shaft and multiple sets of radial stirring blades. The stirring shaft is located inside the inner guide tube.

2. The energy-saving glass bottle raw material preheating device according to claim 1, characterized in that: The outer spiral guide plate has a spiral angle of 25°-35°, and the blade surface of the outer spiral guide plate is provided with axially distributed corrugated protrusions.

3. The energy-saving glass bottle raw material preheating device according to claim 1, characterized in that: The inner guide tube has several uniformly spaced micropores on its sidewall, with a pore diameter of 1-3 mm.

4. The energy-saving glass bottle raw material preheating device according to claim 1, characterized in that: The stirring shaft passes through the bottom of the preheating tank via a magnetic sealing sleeve, and the ends of the radial stirring blades are equipped with detachable wear-resistant ceramic scrapers.

5. The energy-saving glass bottle raw material preheating device according to claim 1, characterized in that: It also includes an exhaust gas collection hood and an insulation jacket covering the outer wall of the preheating tank. The exhaust gas collection hood is connected to the exhaust gas inlet and is used to receive the high-temperature exhaust gas emitted from the glass melting furnace.

6. The energy-saving glass bottle raw material preheating device according to claim 5, characterized in that: The top of the insulation jacket is provided with a steam recovery port, which is connected to an external waste heat boiler. The insulation jacket is filled with ceramic fiber insulation cotton.

7. The energy-saving glass bottle raw material preheating device according to claim 1, characterized in that: The top of the exhaust gas rising channel is connected to a cyclone dust collector, and the exhaust gas is discharged through the exhaust port after dust removal.

8. The energy-saving glass bottle raw material preheating device according to claim 1, characterized in that: The preheated raw material outlet is equipped with a vibratory unloader, and the outlet of the vibratory unloader is equipped with a temperature sensor and a pneumatic butterfly valve.

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