CN202540736U

CN202540736U - Cooling water jacket with grooves

Info

Publication number: CN202540736U
Application number: CN2012201164325U
Authority: CN
Inventors: 杨涛
Original assignee: WUXI JIUTENG PLASTIC PACKAGING MATERIALS CO Ltd; YIXING GUANGHUI PACKAGE CO Ltd
Current assignee: WUXI JIUTENG PLASTIC PACKAGING MATERIALS CO Ltd; YIXING GUANGHUI PACKAGE CO Ltd
Priority date: 2012-03-26
Filing date: 2012-03-26
Publication date: 2012-11-21
Anticipated expiration: 2022-03-26

Abstract

The utility model discloses a cooling water jacket with grooves. The cooling water jacket has a cylindrical structure, which is obtained by welding steel plates in inner and outer layers; a sealed chamber, which is a water jacket cooling water chamber, is formed between the steel plates in the two layers; the internal surface of the steel plate in the inner layer is a water jacket inner wall; and a plurality of grooves are formed in the inner wall of the water jacket. According to the utility model, as the grooves are formed in the inner wall of the cooling water jacket, contact area between the internal surface of the water jacket with equivalent specification and a film is reduced, so that friction force between the internal surface of the water jacket and the film is reduced; moreover, precipitate and adsorbate transferred from the surface of the film to the inner wall of the water jacket can be collected by the grooves; and through periodical washing and removing, adverse effects on film machining process and film surface quality are reduced.

Description

The with groove cooling jacket

Technical field

The utility model relates to a kind of with groove cooling jacket.

Background technology

In producing the process of film, the plastics melted by heating, its big intermolecular reaction force attenuation, big molecule becomes lack of alignment, even after the film cooling, as long as when its temperature is lower than fusing point, big molecule is still random state.If when it is heated to the elastomeric state temperature of high polymer again, film is stretched, macromolecular chain will carry out well-regulated aligning along outer forced direction (draw direction).At this moment, film is cooled off, the orientation of molecule segment is just freezed.When again film being heated; Because the activity of molecule segment; High polymer has a kind of trend (memory function) of recovering its preceding size that stretches, and the directed film that is stretched produces stress relaxation, the film generation disorientation that oneself is directed; Just along original draw direction, contraction returns to original dimension to film.The heat-shrinkable of Here it is film.

Can find out from above-mentioned mechanism, want to make film to obtain heat-shrinkable, must be behind film stretching, the molecule segment that film is cooled off, freezes to be directed.This is to obtain the inotropic key of film.In the blown film process, the cooling device that freezes strand mainly adopts cooling jacket or vane.

Shown in Fig. 1-1, Fig. 1-2, be existing common water jacket, among the figure, 1-1,1-2 are handle; 1-3,1-4 are the water jacket frame plate; 1-5 is a delivery port; 1-6 is a water inlet.

Existing common water jacket is welded by double-layer plate, for having the structure cylindraceous of certain altitude.Form the hermetic cavity chamber between two-layered steel plates.During use, cooling water is got into by water inlet, is full of chamber, and is overflowed by delivery port, makes and maintains sufficient dynamic cooling water in the chamber.Heat-shift between water jacket inwall and the film, and pass to the water in the chamber, heat is taken away by current, and film is cooled, and oriented strand is freezed.

Generally at 200 ~ 300mm, film closely contacts with water jacket blown film with the cooling jacket height, can produce very big frictional resistance, but not closely contact has air between film and the water jacket inwall, can influence the conduction of heat, can't reach desirable cooling effect.Therefore, during film forming, need to give certain tractive force, could guarantee the smooth moulding of film.But tractive force can cause film aspect vertically, to produce new stretch orientation, and film performance is changed.

In addition, in the processing film process, can separate out or adsorb some materials on the face, these materials also can be piled up at the water jacket inwall in the exchange heat process, increase roughness between water jacket inner surface and the film, and the film surface quality is produced harmful effect.

The utility model content

The utility model technical issues that need to address just are to overcome the defective of prior art; A kind of with groove cooling jacket is provided; It reduces the inner surface of equal specification water jacket and the contact area of film through offering groove at the cooling jacket inwall, has reduced frictional force each other; And by the precipitate of transferring to the water jacket inwall on the face and adsorbate, can be collected (, removing), reduce harmful effect processing film process and face quality by groove through regular cleaning.

For addressing the above problem, the utility model adopts following technical scheme:

The utility model provides a kind of with groove cooling jacket; The cylinder-like structure of said cooling jacket for being welded by inside and outside two-layered steel plates; Forming the hermetic cavity chamber between the two-layered steel plates is the jacket water chamber; The inner surface of inner layer steel plate is the water jacket inwall, and the water jacket inwall is provided with the multiple tracks groove.

Said groove evenly is provided with, and gash depth is 0.5-1mm, and width is 1-3mm, and groove pitch is 10 ~ 30mm.

Water jacket is provided with water inlet and delivery port.

Water jacket is provided with handle and water jacket frame plate.

The utility model is at the light water cover dark 0.5-1mm that gets on the bus out, the multiple tracks groove of wide 1-3mm, and groove pitch can be arbitrary distance between 10 ~ 30mm.Because the water jacket inwall has increased the multiple tracks groove, the inner surface of equal specification water jacket and the contact area of film reduce, and have reduced frictional force each other; And by the precipitate of transferring to the water jacket inwall on the face and adsorbate, can be collected (, removing), reduce harmful effect processing film process and face quality by groove through regular cleaning.

In addition, film does not contact with the water jacket inwall in the groove position, can make film internal cause face and the fricative internal stress of water jacket inwall, effectively discharges herein, improves film performance.

Description of drawings

Fig. 1-1 is existing common water jacket outward appearance plan structure sketch map.

Fig. 1-2 is existing common water jacket sectional structure sketch map.

Fig. 2-1 is the utility model with groove cooling jacket outward appearance plan structure sketch map.

Fig. 2-2 is the utility model with groove cooling jacket sectional structure sketch map.

The specific embodiment

Shown in Fig. 2-1, Fig. 2-2; The utility model provides a kind of with groove cooling jacket; The cylinder-like structure of said cooling jacket for being welded by inside and outside two-layered steel plates 1,2; Forming the hermetic cavity chamber between the two-layered steel plates is jacket water chamber 3, and the inner surface of inner layer steel plate is water jacket inwall 1-1, and the water jacket inwall is provided with multiple tracks groove 4.

Water jacket is provided with water inlet 5 and delivery port 6.

Water jacket is provided with handle 7 and water jacket frame plate 8.

The concrete size of present embodiment water jacket can be the high 230mm of water jacket, inside diameter 500mm, ditch groove depth 1mm, ditch groove width 2mm, groove pitch 15mm.

What should explain at last is: obviously, the foregoing description only be for explain clearly that the utility model does for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being amplified out thus or change still are among the protection domain of the utility model.

Claims

1. with groove cooling jacket; The cylinder-like structure of said cooling jacket for being welded by inside and outside two-layered steel plates; Forming the hermetic cavity chamber between the two-layered steel plates is the jacket water chamber, and the inner surface of inner layer steel plate is the water jacket inwall, it is characterized in that: the water jacket inwall is provided with the multiple tracks groove.

2. with groove cooling jacket as claimed in claim 1 is characterized in that: said groove evenly is provided with, and gash depth is 0.5-1mm, and width is 1-3mm, and groove pitch is 10 ~ 30mm.

3. according to claim 1 or claim 2 with groove cooling jacket, it is characterized in that: water jacket is provided with water inlet and delivery port.

4. with groove cooling jacket as claimed in claim 3 is characterized in that: water jacket is provided with handle and water jacket frame plate.