CN201405501Y

CN201405501Y - Novel screw

Info

Publication number: CN201405501Y
Application number: CN2008201811297U
Authority: CN
Inventors: 李新乐
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-12
Filing date: 2008-12-12
Publication date: 2010-02-17
Anticipated expiration: 2018-12-12

Abstract

The utility model discloses a novel screw which comprises a screw main body. The pitch of the screw decreases gradually sequentially from the connecting end and the depth of the threads also decreasesgradually from the connecting end. When the novel screw is in use, along with the advancing of the threads, the depth of the threads and the pitch of the screw both become smaller and smaller, in this way, the shearing force is reduced while the pressure is increased, so the formation period of the material can be shortened and the discharge speed can be improved, thereby improving the yield perunit time by about 50% and saving electricity by 30%. Meanwhile, on the base of obtaining the same compression ratio, the length of the novel screw can be reduced by 40% compared with the common screws, thereby correspondingly reducing the steel consumption in producing the novel screw.

Description

A kind of new screw

Technical field

The utility model relates to a kind of screw rod, does not particularly equidistantly wait dark screw rod.

Background technology

Screw rod commonly used comprises single screw rod, twin-screw etc., and these screw rods all are equidistant etc. dark.Use this class screw rod to go for bigger compression ratio, can only increase the length of screw rod, so increased manufacturing cost.And screw rod is long more, and the relative loss factor in the use is also just big more, has also just increased use and maintenance cost.So based on the problems referred to above, I have designed a kind of dark screw rod that equidistantly do not wait, and under the prerequisite that obtains identical compression ratio, use the length of this screw rod shorter, save and make the used steel of screw rod, have also reduced use and maintenance cost simultaneously.

The utility model content

The purpose of this utility model provides a kind of new screw, solves the problems that dark screw rod consumptive material is many, maintenance cost is big such as equidistant of using always.

The purpose of this utility model is to be achieved through the following technical solutions:

A kind of new screw comprises the screw rod body, and the pitch of screw rod begins to successively decrease successively from link, and the degree of depth of spiral shell tooth is also along with successively decreasing.

New screw is in the process of using, along with the propelling of spiral shell tooth, the degree of depth and the pitch of spiral shell tooth are all more and more littler, increase pressure when so just reducing shearing gradually, can shorten the formation of material and improve the speed of discharging, so can improve yield in unit time about 50%, economize on electricity 30%; And simultaneously under the condition that obtains identical compression ratio, use the screw rod of the utility model design, and compare with screw rod commonly used, can shorten length 40%, produce the steel that screw rod uses so can reduce accordingly.

Description of drawings

With embodiment the utility model is described in further detail with reference to the accompanying drawings below.

Fig. 1 is the screw-rod structure figure that uses always;

Fig. 2 is a new screw structure chart described in the utility model.

Among the figure:

1, general screw; 2, new screw.

The specific embodiment

Figure 1 shows that uniform pitch, the general screw 1 that the spiral shell tooth depth is identical.

Fig. 2 is considered as new screw 2 described in the utility model, comprises the screw rod body, and the pitch of screw rod begins to successively decrease successively from link, and the degree of depth of spiral shell tooth is also along with successively decreasing.

New screw 2 is in the process of using, propelling along with the spiral shell tooth, the degree of depth and the pitch of spiral shell tooth are all more and more littler, increase pressure when so just reducing shearing gradually, can shorten the formation of material and improve the speed of discharging, so can improve yield in unit time about 50%, economize on electricity 30%; And simultaneously under the condition that obtains identical compression ratio, use the screw rod of the utility model design, and compare with screw rod commonly used, can shorten length 40%, produce the steel that screw rod uses so can reduce accordingly.

Claims

1, a kind of new screw comprises the screw rod body, it is characterized in that, the pitch of screw rod begins to successively decrease successively from link, and the degree of depth of spiral shell tooth is also along with successively decreasing.