CN2485616Y

CN2485616Y - Spiral drier

Info

Publication number: CN2485616Y
Application number: CN 01220373
Authority: CN
Inventors: 米洁
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-29
Filing date: 2001-04-29
Publication date: 2002-04-10
Anticipated expiration: 2011-04-29

Abstract

The utility model discloses a hollow helix improved structure of the agitating main working component helix drying machine( seen graph 3 ) which provides heat in the heat transmission method. The utility model is characterized in that the hollow helix body(seen graph 2 ) comprises a helix pipe set(1) which is fixed on a hollow axis(2); compared with the prior art, the utility model has a simple structure, a small forming and assembling working volume and an easy making art which is easy to be realized; the utility model is easy to be changed after abrasion and has a small repairing working volume; the utility model can be used as a heat transmission drying machine used for processing the material which is thin with a high water content and viscosity; the utility model enhances the agitating and heat transmission capability of the material; the utility model improves the drying effect and enhances the pressure bearing capability of the component; and the carrying out examples are of a single layer or a plurality of layers.

Description

Novel helicoid screw dryer

The utility model relates to a kind of PADDLE DRYERS, particularly a kind of indirect heating type helical stir drying machine of giving heat with conduction pattern.

Helicoid screw dryer is a kind ofly to carry out the large-sized drying machines of indirect with conduction pattern to heat, is used for dry floatation clean coal or coal slime filter cake, fine ore, the sodium carbonate equigranular is thin, moisture is big, viscosity is high fine particle stage material.Be applied in coal, metallurgy and building material industry from the spiral drying machine that U.S. Denver company introduces the beginning of the eighties, the Coal Industry Press publish in April, 1993 " the coal separation handbook has been introduced relevant helicoid screw dryer technical data for the 6th piece.Helicoid screw dryer of the prior art by jacket type " U " type cell body and two supports the cored screw body on bearing form.Thermal medium flows (Fig. 1 [3]) in chuck cell body and cored screw body, and material is passed by the cored screw body in cell body and mixed, and receives the heat heat drying that the conduction of cored screw surface and chuck cell body inner surface comes simultaneously.

The cored screw body is the main working parts of helicoid screw dryer, cored screw body of the prior art structure as shown in Figure 1: in the outside coiling of the hollow shaft [2] of cored screw body a screwed pipe [4], the front and back walls of cored screw blade [1] is welded on thread groove [5] both sides of screwed pipe [4] respectively.This kind version makes behind cored screw blade [1] in the cored screw body and screwed pipe [4] expanded by heating axle [2] that coexists go up and freely drift about, and prevents that generation has destructive thermal stress.

There are the following problems for the structural design of cored screw body of the prior art: at first be cored screw body structure complexity, the wherein coiling of screwed pipe, working procedures such as the blade forming of each helical pitch of cored screw blade, overall package, welding and weldquality inspection are complicated and amount is big; The spendable thermal medium of spiral has deep fat, steam, hot water etc., and its operating pressure is 0.5～0.8Mpa, and the cored screw blade bearing capacity of plank frame is poor; The cored screw blade is a vulnerable part, is difficult for changing in case may wear to the degree of scrapping, and the returns of investment of equipment are reduced.

The novel purpose of this use is: optimize the cored screw body structure, simplified processing process reduces the device fabrication workload, improves Technical properties of plant.

For achieving the above object, the technical scheme that the utility model adopted (Fig. 2) is: the screwed pipe of cancellation coiling on hollow shaft; Replace the cored screw blade with helix tube group [1], according to varying in size of the specification of helicoid screw dryer, its helix tube group [1] can be made up of the helix tube of 1,2,3 varying number, the two ends of helix tube group [1] plant on the cinclides that is welded in hollow shaft [2], simultaneously with the bonding strength of stiffener reinforcement with hollow shaft [2], be provided with several groups of elastic bearings [5] at the middle part of helix tube group [1], guarantee axial rigidity and its bonding strength on hollow shaft [2] of helix tube group [1]; Shovel type scraper plate [4] is set on the cylindrical of helix tube group [2].This scheme has more special advantage on the rising-heat contracting-cold problem that solves hot equipment: because the helix tube group has the performance of spring, the helix tube stroke in the longitudinal direction that causes owing to variation of temperature can be converted into the trace increase and decrease of helix tube diameter dimension, the radial dimension trace that the elastic bearing that is provided with on the helix tube group can not limit helix tube changes, the oneself absorbs so the change in size residual quantity that helix tube group and hollow shaft are produced when variations in temperature fully can be by spring performance that the helix tube group had, therefore can not have thermal stress.

Advantage that utility model is compared with prior art had and good effect: because above-mentioned solution has adopted the helix tube group in the design of cored screw body, make the moulding of cored screw, the assembly working amount reduces significantly, after the helix tube group is the seamless steel pipe heating, on a pattern, roll and form by shaped steel, also can directly provide semi-finished product by steel pipe rolling factory by specification requirement, behind the helix tube composing type, overall fixed is on hollow shaft, reduced a large amount of assembly working amount of cored screw blade of the prior art, made the helix tube group check that than the welding and the weldquality of cored screw blade workload has reduced 85～90%; Because cancelled screwed pipe and adopted the helix tube group, thereby simplified the structure of cored screw body, the processing of helix tube group does not need large-scale professional equipment, has reduced the processing and manufacturing difficulty; The helix tube group has improved the security and the reliability of equipment operation than the cored screw blade bearing strength height of plank frame; The helix tube group is as vulnerable part, in case wearing and tearing are scrapped, the helix tube group that more transducer set is new gets final product, because some local welding point between helix tube group and the hollow shaft, maintenance load is little; The material that is in operation is not only passed forward by the helix tube group and is mixed, but also can be taken up by the inner ring surface of helix tube group, has than cored screw blade and better mixes performance, has therefore increased the touch opportunity of material and heating surface, has improved the dry materials effect; The material between cell body inner surface and the external circle of cored screw can be rooted out and be promoted to accumulate in to the shovel type scraper plate that is provided with on the cylindrical of helix tube group, makes it discharge drying machine, prevents that the cell body inner surface from accumulating material for a long time and influencing the heat transmission.

Description of drawings:

Fig. 1 is a cored screw body of the prior art

Fig. 2 is a cored screw body of the present utility model

Fig. 3 is the utility model helicoid screw dryer embodiment

The embodiment of novel helicoid screw dryer can be a single layer structure, is illustrated in figure 3 as 1 layer of 4 conveyor screw.According to the needs of disposal ability, drying machine can also be designed to 2 layers or 3 layers of folded mutually composition, and the different size embodiment of 1,2 or 4 conveyor screw (Fig. 2) can be set in every layer of cell body [6].The drying machine that the phase laying up is put has reduced the surface heat loss, and has improved equipment thermal efficiency.

Claims

1, novel helicoid screw dryer, comprise cell body [6], conveyor screw, bearing group [7], cover [8], it is characterized in that: cell body [6] is " U " type jacket type, the inside and outside courage of chuck is connected by dividing plate [9], cell body is provided with conveyor screw in [6], and spirochetal two supports is on bearing group [7] independently, and the conveyor screw quantity in the cell body [6] can be 1,2,4, and drying machine can be 1 layer, 2 layers or 3 layers of folded mutually composition as required.

2, novel helicoid screw dryer according to claim 1, it is characterized in that: described conveyor screw is to be made of helix tube group [1] and hollow shaft [2], helix tube group [1] can be 1,2,3 helix tube composition according to the difference of specification of equipment, the two ends of helix tube group [1] are communicated with hollow shaft [2], and strengthen its bonding strength with stiffener, the middle part of helix tube group [1] is provided with several groups of elastic bearings [5] and is fixed on the hollow shaft [2], and helix tube group [1] rotation direction on the per two adjacent conveyor screws is opposite and in interleaved relation with each other.

3, novel helicoid screw dryer according to claim 1, it is characterized in that: on the outer garden that constitutes spirochetal helix tube group [1], be provided with shovel type scraper plate [4], shovel type scraper plate [4] is identical with helix tube group [1] rotation direction, and the lift angle of shovel type scraper plate [4] is greater than the lift angle of helix tube group [1].