CN102139800B - High temperature-keeping screw conveyor - Google Patents

Abstract

The invention discloses a high temperature-keeping screw conveyor. A cylindrical shell (19) consists of a bushing (6) and two layers of stainless steel cylinder cavities (8), wherein the front end of the cylindrical shell (19) is welded with a front heat-isolating layer (4) and a front sealing plate (3); the rear end of the cylindrical shell (19) is welded with a rear sealing plate (11) and a rear heat-isolating layer (10); a central shaft of an auger (7) is connected with an output shaft with a motor speed reducer (13) through an elastic sleeve coupler (12); cooling water passages are formed in the central shaft and a blade of the auger (7); and a weighing module (16) is arranged on the lower part of the cylindrical shell (19). The high temperature-keeping screw conveyor has heat-isolating and protecting effects on a power transmission mechanism and prolongs the service life of the transmission mechanism. In order to achieve transfer control, the regularly and quantificationally conveying and blanking of high-temperature scattered materials are achieved through the arranged weighing module (16); and the high temperature materials can be sealed and subjected to heat preservation while being conveyed.

Description

High-temperature insulation spiral conveyor

Technical field

The invention belongs to the High temperature bulk material conveying equipment technical field, relate to a kind of load transfer device of the hot direct reduced iron blanking control for 700 ℃ of high temperature, this load transfer device also is applicable to conveying and the blanking control of high temperature bulk material in the industries such as coal, metallurgy, chemical industry.

Background technology

Direct-reduction ironworks and steel mill be adjacent a lot of advantages.But one of challenge that faces is the transportation problem of hot direct reduced iron.Avoid energy dissipation in order to save the energy, guarantee that economic benefit is high, temperature loss must be minimum, and this just requires load transfer device to have heat insulation function.On the other hand, hot direct reduced iron is highly susceptible to oxidation, namely is easy to burning, so will avoid hot direct reduced iron to contact with oxygen, this just requires the load transfer device sealing.The material that transports high temperature like this has very high requirement to the ability of the heat resistant and wear resistant of load transfer device.But present domestic legacy equipment technology is difficult to also accomplish that the hot direct reduced iron to 700 ℃ of high temperature carries out the sealing thermal insulation blanking.Traditional conveyor screw generally can only carry normal temperature or temperature not to be higher than 400 ℃ loose unpacked material, exists the defective that can not carry high-temperature material, more can not accomplish the effect to the material insulation.

Summary of the invention

The deficiencies such as the conventional helical conveyer can not be carried the hot direct reduced iron of high temperature in order to solve, blanking and insulation, the invention provides a kind of high-temperature insulation spiral conveyor, this utility model is rational in infrastructure reliable, also can realize the at regular time and quantity blanking to high-temperature material when carrying 700 ℃ of high-temperature materials that it is incubated.

The technical solution adopted for the present invention to solve the technical problems is: this high-temperature insulation spiral conveyor, comprise that one has the cylindrical casing of inlet point and discharging opening, weigh part and cooling segment, auger is set in the cylindrical casing, it is characterized in that: described cylindrical casing is comprised of lining and two-layer stainless steel cylinder chamber, front thermal insulation layer, front closing plate and rear closing plate, rear thermal insulation layer weld respectively in the front and back end section of cylindrical casing, wherein, described front thermal insulation layer, rear thermal insulation layer are made by the heat resistant and wear resistant metallic material.The front end of auger center shaft passes front thermal insulation layer and front closing plate is installed on the front rolling bearing units, the rear end of auger center shaft passes rear closing plate and rear thermal insulation layer is installed on the rear rolling bearing units, and described auger center shaft is connected by the output shaft of resilient sleeve coupler with the translator reductor.Center shaft and the blade interior of auger arrange Coolant gallery, the water inlet screw connection that is installed in the front closing plate outside is connected with described Coolant gallery, the water outlet screw connection that is connected with described Coolant gallery is installed in the rear closing plate outside, described auger is made by the heat resistant and wear resistant metallic material, its Leaf also can be real core blade, and the center shaft hollow of auger is led to cooling water expansion tank.The bottom of cylindrical casing arranges Weighing module.Described lining is made by the heat resistant and wear resistant metallic material, the outside of lining is two-layer high temperature resistant stainless steel cylinder chamber, adopt the ring-type supporting clapboard to connect between the two-layer stainless steel cylinder chamber, wherein the one deck near lining is air layer, one deck near cylindrical casing is the heat-insulation layer of filling aluminium silicate, and the thickness of described heat-insulation layer is determined by the heat dissipation capacity of actual requirement.

The position of described inlet point and discharging opening also can change its relevant position according to concrete place, namely becomes inlet point at the cylindrical casing rear portion, and discharging opening is anterior at cylindrical casing.

The invention has the beneficial effects as follows: this invention increases outside the whole lining of heat resistant and wear resistant in the casing of conveyer, has also increased the stainless steel barrel chamber with one deck air layer and one deck aluminosilicate material heat-insulation layer.So effectively stop the dissipation of heat of high-temperature material in the high-temperature insulation spiral conveyor, thereby reached the heat insulation function to material.The auger that is comprised of hollow center shaft and blade has guaranteed that by the water quench of entery and delivery port screw connection the critical component auger has extraordinary intensity and wear resisting property under 700 ℃ of high temperature.Owing at the forward and backward closing plate of high-temperature insulation spiral conveyor place thermal insulation layer being set, Power train (such as bearing, transmission shaft, reductor etc.) etc. is played the thermal insulation protection effect, improved the service life of transmission device.For the ease of realizing pipage control, in the bottom of high-temperature insulation spiral conveyor weighting apparatus is set, effectively solved the at regular time and quantity conveying cutting stock problems of high temperature bulk material, and when transporting, can seal and be incubated high-temperature material.

Description of drawings

The below is described in detail specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of high-temperature insulation spiral conveyor;

Fig. 2 is high-temperature insulation spiral conveyor I section enlarged drawing;

Fig. 3 is high-temperature insulation spiral conveyor II section enlarged drawing;

Fig. 4 is auger center shaft waterway structural representation.

In above-mentioned accompanying drawing, 1. water inlet screw connection, 2. front rolling bearing units, 3. front closing plate, 4. front thermal insulation layer, 5. inlet point, 6. lining, 7. auger, 8. stainless steel cylinder chamber, 9. heat-insulation layer, 10. rear thermal insulation layer, 11. rear closing plate, 12. resilient sleeve coupler, 13. translator reductors, 14. the water outlet screw connection, 15. rear rolling bearing units, 16. Weighing modules, 17. discharging opening, 18. ring-type supporting clapboards, 19. cylindrical casings.

The specific embodiment

Embodiment 1

Fig. 1, Fig. 2 and Fig. 3 are embodiment of disclosure of the invention, the front portion of the cylindrical casing 19 of high-temperature insulation spiral conveyor arranges inlet point 5, the rear portion of cylindrical casing 19 arranges discharging opening 17, and the bottom of cylindrical casing 19 arranges Weighing module 16, the cylindrical casing 19 interior augers 7 that arrange.Described cylindrical casing 19 is comprised of lining 6 and two-layer stainless steel cylinder chamber 8, described lining 6 is made by the heat resistant and wear resistant metallic material, the outside of lining 6 is two-layer high temperature resistant stainless steel cylinder chambeies 8, adopt ring-type supporting clapboard 18 to connect between the two-layer stainless steel cylinder chamber 8, wherein the one deck near lining 6 is air layer, and one deck of close cylindrical casing 19 is for filling the heat-insulation layer 9 of aluminium silicate.Front thermal insulation layer 4, front closing plate 3 and rear closing plate 11, rear thermal insulation layer 10 weld respectively in the front and back end section of cylindrical casing 19.The front end of auger 7 center shafts passes front closing plate 3 and front thermal insulation layer 4 is installed on the front rolling bearing units 2, the rear end of auger 7 center shafts passes rear thermal insulation layer 10 and rear closing plate 11 is installed on the rear rolling bearing units 15, and the center shaft of auger 7 is connected by the output shaft of resilient sleeve coupler 12 with translator reductor 13.The blade of auger 7 and center shaft inside arrange Coolant gallery a, b, the water inlet screw connection 1 that is installed in front closing plate 3 outsides is connected with described Coolant gallery a, b, the water outlet screw connection 14 that is connected with described Coolant gallery a, b is installed in rear closing plate 11 outsides, and water inlet screw connection 1 is connected with the water outlet screw connection and is connected the cooling water expansion tank pumping plant.

Described front thermal insulation layer 4, rear thermal insulation layer 10 and auger 7 are made by the heat resistant and wear resistant metallic material.Heat-insulation layer 9 can stop the dissipation of heat of high-temperature material effectively, plays the effect to the material insulation, and the thickness of heat-insulation layer 9, front thermal insulation layer 4 and rear thermal insulation layer 10 will be determined according to the heat dissipation capacity of actual requirement.

Front thermal insulation layer 4 can play the thermal insulation protection effect to front closing plate 3, front rolling bearing units 2.Thermal insulation layer 10 can play the thermal insulation protection effect to rear closing plate 11, rear rolling bearing units 15, resilient sleeve coupler 12 and translator reductor 13 etc. in like manner; improved the working environment of bearing, transmission shaft and the planet cycloid wheel reductor of Power train, the service life of having improved transmission device.

The center shaft of auger 7 and blade all lead to water quench, and center shaft and blade all advance cooling water expansion tank by water inlet screw connection 1, and go out cooling water expansion tank by water outlet screw connection 14.The blade of auger 7 and center shaft have respectively oneself independently cooling water expansion tank water channel a, b, and the water flowing cooling has guaranteed that auger 7 also has extraordinary intensity and wear resisting property under 700 ℃ of high temperature.The high temperature loose unpacked material enters high-temperature insulation spiral conveyor by inlet point 5, and promotes forward by auger 7 helical rotation that power is provided by translator reductor 13, until discharging opening 17 dischargings.The heat-resistant antifriction performance of auger 7, lining 6, front thermal insulation layer 4 and the rear thermal insulation layer 10 of being made by the heat resistant and wear resistant material can work high-temperature insulation spiral conveyor under 700 ℃ of high temperature.Mass transport amount in 16 pairs of convey materials processes of Weighing module is weighed, according to the needs of the output of material, and the rotating speed of accommodation zone motor reducer 13 control augers 7, thus reach the purpose that changes output.

Embodiment 2

Fig. 1, Fig. 3 and Fig. 4 are another embodiment disclosed by the invention, the structure of this high-temperature insulation spiral conveyor is substantially the same manner as Example 1, different is: inlet point 5 is arranged on the rear portion of cylindrical casing 19, discharging opening 17 is arranged on the front portion (seeing the dotted line position of Fig. 1 inlet point, discharging opening) of cylindrical casing 19, the center shaft of cylindrical casing 19 interior augers 7 arranges Coolant gallery c, and blade is solid construction.

Claims (3)

1. high-temperature insulation spiral conveyor, comprise cooling segment, the cylindrical casing (19) of weighing part and having an inlet point (5) and discharging opening (17), auger (7) is set in the cylindrical casing (19), it is characterized in that: described cylindrical casing (19) is comprised of lining (6) and two-layer stainless steel cylinder chamber (8), the outside of described lining (6) is two-layer high temperature resistant stainless steel cylinder chamber (8), adopt ring-type supporting clapboard (18) to connect between the two-layer stainless steel cylinder chamber (8), wherein, between two-layer stainless steel cylinder chamber, one deck near lining (6) is air layer, outer heat-insulation layer (9) for the filling aluminium silicate is before the cylindrical casing (19), rearward end is welded respectively front thermal insulation layer (4), front closing plate (3) and rear closing plate (11), rear thermal insulation layer (10); Auger (7) center shaft front end passes front closing plate (3) and front thermal insulation layer (4) is installed on the front rolling bearing units (2), auger (7) center shaft rear end passes rear thermal insulation layer (10) and rear closing plate (11) is installed on the rear rolling bearing units (15), and is connected by the output shaft of resilient sleeve coupler (12) with translator reductor (13); The center shaft of auger (7) and blade interior arrange Coolant gallery (a, b), the water inlet screw connection (1) that is installed in front closing plate (3) outside is connected with described Coolant gallery (a, b), the water outlet screw connection (14) that is connected with described Coolant gallery (a, b) is installed in rear closing plate (11) outside, and the bottom of cylindrical casing (19) arranges Weighing module (16).

2. high-temperature insulation spiral conveyor according to claim 1, it is characterized in that: inlet point (5) is arranged on the rear portion of cylindrical casing (19), and discharging opening (17) is arranged on the front portion of cylindrical casing (19).

3. high-temperature insulation spiral conveyor according to claim 1, it is characterized in that: described auger (7) center shaft inside arranges Coolant gallery, and blade interior adopts solid construction to replace Coolant gallery (a).