CN2169986Y

CN2169986Y - Puffing machine

Info

Publication number: CN2169986Y
Application number: CN93243405U
Authority: CN
Inventors: 张旭东; 石定秒
Original assignee: ANLU GRAIN MACHINERY PLANT
Current assignee: ANLU GRAIN MACHINERY PLANT
Priority date: 1993-10-27
Filing date: 1993-10-27
Publication date: 1994-06-29
Anticipated expiration: 2003-10-27

Abstract

The utility model relates to a puffing machine which at least comprises a machine body. A sleeve barrel is fixedly installed on the machine body, and a screw rod which is moved in a rotary mode is arranged in the sleeve barrel. A charging device is positioned at one end of the sleeve barrel, and the other end of the sleeve barrel is a material shaping die. The utility model is mainly characterized in that the end portion of the screw rod adjacent to the shaping die is a convex curved surface. The puffing machine can be used for processing fodder and food, or can be used as preprocessing equipment for processing oil materials in an oil extracting mode. The utility model has the advantages that the utility model can enhance the puffing rate of materials and improve the puffing effect.

Description

Puffing machine

The utility model relates to a kind of bulking machine, particularly cereal etc. is carried out the extruding puffing machine of expanding treatment, can be used for processing food, beverage, feed or as the pre-processing device of oil plant processing etc.

Chinese patent 91225412.2 discloses a kind of bulking machine, main composition comprises body, be fixed with sleeve on the body, in sleeve, be provided with the screw rod that rotates, feed arrangement is positioned at an end of sleeve, be provided with the material forming mould at the other end, the operation principle of bulking machine is as follows: material is promoted by screw rod after entering sleeve, extruding forward, complications are advanced, material is pressurized in this process, mix, compression, pressurized heating under the mechanism of propulsive force and frictional force, and the high pressure conditions that reaches a high temperature, material has been put aside big energy under this state, when its through moment that the moulding nib is extruded, because material is reduced to the normal temperature and pressure state suddenly, huge energy discharges and makes the material tissue be subjected to powerful explosion extension effect, realization is expanded to material, as seen expanded effect depends on the size of energy and the length of exergonic time, yet when material is sent to the shaping mould center by the screw rod outline and when neighbouring, can experience one section process by shaping mould edge hole and near the pressure release of hole thereof, cause these materials that are transported to the shaping mould middle part to be squeezed out the requirement that the energy of being stored before the shaping mould has not satisfied expanded institute energy requirement, therefore shaping mould center and near the relatively poor phenomenon of position expansion effect thereof occur, reduced the expansion rate of material.

For this reason, the purpose of this utility model is to avoid the deficiency of above-mentioned prior art, and a kind of improved bulking machine is provided, and it can improve the expansion rate of whole material, and improves the expansion effect at shaping mould center and near position thereof to a certain extent.

The technical scheme that realizes the utility model purpose is a kind of bulking machine, comprise body, be packed in the two ends that sleeve, feed arrangement and shaping mould on the body lays respectively at sleeve, be provided with the screw rod that rotates in sleeve, its special character is: the screw rod end adjacent with shaping mould is the curved surface of projection.

And the curved surface of screw rod end bosses is mushroom.

And this projection curved surface is continuous surface or segmented surface.

Owing under the situation that screw rod and shaping mould relative position remain unchanged, the screw rod end made protruding curved surface, dwindled the volume in the space of depositing between screw rod end and shaping mould, especially reduced the volume between both middle parts, thereby when screw speed is constant, accelerated the speed of material outflow shaping mould, reduce the energy loss of material, improve the expansion effect at shaping mould middle part, and the curved surface of projection is when being mushroom, by material as can be seen at the force analysis figure of screw rod end (Figure of description 1), when material can be subjected to along the active force of mushroom-shaped surface normal direction when the outline of screw rod is sent to the centre, this active force can be decomposed into parallel, two component perpendicular to shaping mould, component perpendicular to shaping mould squeezes out shaping mould with material, the component that is parallel to shaping mould then plays the effect that material is transported to the shaping mould middle part that hinders, so just, reduced from the discharging at not good enough shaping mould center of expansion effect and near position thereof and increased the load of shaping mould edge and near part thereof, make most materials can both be fully expanded, thereby improve the expansion rate of material, and the amount that reduces the material be sent to the shaping mould middle part also helps this part material and can in time be squeezed out shaping mould centre bore and near hole thereof, improves the expansion effect at shaping mould middle part.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1 is material stress figure

Fig. 2 is the integrally-built front view of signal the utility model.

Fig. 3 is that protruding curved surface is mushroom enlarged diagram.

Fig. 4 is the vertical view of Fig. 3.

With reference to Fig. 2, Fig. 3; sleeve 4 is the accumbency shape and is packed on the body 11; feed arrangement 8 is positioned at an end of sleeve 4; it can be by motor 7; transmission device 6(decelerator) and by the auger conveyor 5 of its driving constitute; above conveyer 5, be provided with the hopper 9 of transporting material, a shaping mould 1 can be installed, also can hinged two or more shaping moulds 1 take downtime when preventing to clear up shaping mould 1 at the other end of sleeve 4.

In sleeve 4, be provided with by motor (at body 11 rear portions) by transmission device 10(as belt, chain or gear drive etc.) drive the screw rod 3 of rotation, this screw rod 3 can be single screw rod shown in Figure 1, also can be twin-screw, the two structure is roughly the same, and sleeve 4 inner wall areas of different just twin-screw Bulking Machine and the surface of screw rod 3 want big.Screw rod 3 and shaping mould 1 adjacent end 2 be protruding curved surface, the surface of curved surface can be a continuous surface, also can be segmented surface shown in Figure 4 16, the cross sectional shape of curved surface can be conic section arbitrarily, is preferably mushroom-shaped 14 or triangle, and sphere 15 is made on the top of curved surface, so that processing, this protruding curved surface can be directly processing on screw rod 3, also can be processed into an independent part as shown in Figure 3---pester 12, be assembled on the screw rod 3 with screw thread 13 or forms such as pin or key again.

This bulking machine can be a self-heating, and promptly the mechanical energy by screw rod 3 spin frictions changes heat energy into, but temperature-change type preferably, that is extrusion process institute calorific requirement is except that by the mechanical energy of extrusion friction, can also be by outside heat supply (as overheated steam).

Claims

1, a kind of bulking machine, the two ends that comprise body [11], be packed in sleeve [4] on the body, feed arrangement [8] and shaping mould [1] lay respectively at sleeve [4], be provided with the screw rod [3] that rotates in sleeve [4], it is characterized in that: the screw rod end [2] adjacent with shaping mould [1] is the curved surface of projection.

2, bulking machine according to claim 1 is characterized in that: the curved surface of screw rod end ［ 2 ］ projection is mushroom ［ 14 ］.

3, bulking machine according to claim 1 and 2 is characterized in that: the curved surface of screw rod end ［ 2 ］ projection is a continuous surface.

4, bulking machine according to claim 1 and 2 is characterized in that: the curved surface of screw rod end ［ 2 ］ projection is segmented surface ［ 16 ］.