CN201769267U

CN201769267U - Double-shaft vacuum extruder

Info

Publication number: CN201769267U
Application number: CN2010202404878U
Authority: CN
Inventors: 林振武
Original assignee: Anhui Xinglin Machinery Group Co Ltd
Current assignee: Anhui Xinglin Machinery Group Co Ltd
Priority date: 2010-06-25
Filing date: 2010-06-25
Publication date: 2011-03-23
Anticipated expiration: 2020-06-25

Abstract

The utility model discloses a double-shaft vacuum extruder. The extruder is characterized in that two extruding reamers with the same diameters and rotation speed and opposite directions of spiral grooves and rotation are arranged parallelly in a mud cylinder, the outer edge of one reamer is tangent to the bottom of the spiral groove of the other reamer, the spiral surfaces of the two reamers are intersected and coincided with each other, and the two reamers rotate in mutually reverse directions. The double-shaft vacuum extruder can effectively avoid mud rotation and mud return, improves extrusion efficiency, and can prevent the mud cylinder from heating and reduce spiral grains.

Description

The twin shaft vacuum-extruder

Technical field

The utility model relates to extrusion equipment, a kind of twin shaft vacuum-extruder of more specifically saying so, and being particularly suited for gangue, flyash, shale, clay and rubbish is that raw material is produced porous brick, hollow brick, standard brick and other hollw article.

Background technology

For with gangue, flyash, shale, clay and rubbish are that raw material is produced porous brick, hollow brick, standard brick and other hollw article, the current single shaft extrusion equipment that all adopts both at home and abroad, utilize the frictional force of mud casing wall and pug to stop the pug rotation, rationally lead of screw is set in case non-return mud, but, when the power of extruding strengthens, the corresponding increasing of the revolving force of pug, the extruded velocity of pug just can descend, and produces the heating of mud cylinder, therefore consume a large amount of power, product produces major defects such as spiral lamination, and when revolving force during greater than frictional force, motor current sharply strengthens, pug then rotates in the mud cylinder, and pug can't be extruded.The version that this single shaft is extruded can not effectively be controlled the pug rotation and reach back mud, and extrusion efficiency is generally lower, only is 10%-30%, and domestic and international state-of-the-art extruder efficient also is no more than 30%.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, provides a kind of and can effectively overcome the pug rotation and reach back mud, improves extrusion efficiency, and can prevent the heating of mud cylinder, the twin shaft vacuum-extruder of minimizing spiral lamination formation.

The utility model technical solution problem adopts following technical scheme:

The design feature of the utility model twin shaft vacuum-extruder is in the mud cylinder, what be set up in parallel two pairs diameter is identical with rotary speed, helicla flute is opposite with direction of rotation extrudes reamer, tangent at the bottom of the helicla flute with the outer rim of one pair of reamer wherein and another pair reamer wherein, two pairs of staggered coincidences of reamer helicoid, counter-rotating mutually.

The design feature of the utility model twin shaft vacuum-extruder also is to be provided with the length of the closed section of extruding reamer greater than 2.5 helical pitches.

It is the light face that design feature of the present utility model also is to be provided with mud cylinder madial wall.

Compared with the prior art, the utility model beneficial effect is embodied in:

1, the utility model can effectively save energy and reduce the cost, increase output, improves the quality of products, and extrusion efficiency can be brought up to about 40%-50%.

2, mud cylinder madial wall is the light face in the utility model, has simplified the manufacturing process of mud cylinder.

3, pug is a ductile material, and meeting produces plastic deformation after being squeezed, and the phenomenon that a small amount of rotation and time mud take place is inevitable.And the utility model exceeds more than 50% than single shaft extruder efficient, is specially adapted to low the moulding firmly of pug moisture content and extrudes.

Description of drawings

Fig. 1 is a twin shaft master TV structure schematic diagram in the utility model.

Fig. 2 is a twin shaft plan structure schematic diagram in the utility model.

Number in the figure: 1 soil compressing plate, 2 mud cylinders, 3 left-hand rotation reamers, 4 right-hand rotation reamers, 5 heads, 6 machine mouths, 7 main shafts.

The utility model is described in further detail below by the specific embodiment, and in conjunction with appended drawings:

The specific embodiment

Referring to Fig. 1, Fig. 2, twin shaft vacuum-extruder in the present embodiment is in the mud cylinder, what be set up in parallel two pairs diameter is identical with rotary speed, helicla flute is opposite with direction of rotation extrudes reamer, i.e. left-hand rotation reamer shown in the figure 3 and right-hand rotation reamer 4, tangent at the bottom of the helicla flute with the outer rim of one pair of reamer wherein and another pair reamer wherein, two pairs of staggered coincidences of reamer helicoid, counter-rotating mutually.

Pug is subjected to the extruding of soil compressing plate 1 in the material feeding section, enter mud cylinder 2 along the screw reamer outside, under the driving of main shaft 7, left-hand rotation reamer 3 and right-hand rotation reamer 4 rotate in opposite directions, produce the screw that one side rotation one side is advanced, when tamping under the reamer side space, pug is sent to the closed section that is positioned at head 5 places one side, though in rotation, can reduce the speed of advancing by weighing out pug in the machine mouth 6 in the hand again,, enough pug input closed sections be arranged because material feeding section reamer helical pitch is bigger.

Be squeezed in the closed section influence of power of pug produces the tendency of rotation, because helicla flute is at the intersection area coincidence, the pugs in two helicla flutes have stoped the other side's rotation, and the ectonexine resistance is basic identical, and pug can not produce lamination.The mutual resistance phenomenon that spiral fluted intersection zone is produced has not only stoped the rotation of pug, and is to have stoped the place ahead pug to return mud.

In the present embodiment, owing to overcome the frictional force that the resistance of pug rotation no longer relies on the mud casing wall, cancel the passage that groove on the mud casing wall has equaled to cancel time mud, also reduced the resistance that pug advances.

Claims

1. twin shaft vacuum-extruder, it is characterized in that in mud cylinder (2), what be set up in parallel two pairs diameter is identical with rotary speed, helicla flute is opposite with direction of rotation extrudes reamer, tangent at the bottom of the helicla flute with the outer rim of one pair of reamer wherein and another pair reamer wherein, two pairs of staggered coincidences of reamer helicoid, counter-rotating mutually.

2. twin shaft vacuum-extruder according to claim 1, the length that it is characterized in that being provided with the closed section of extruding reamer is greater than 2.5 helical pitches.