CN2792749Y

CN2792749Y - Fast rotary melt filter of extruder

Info

Publication number: CN2792749Y
Application number: CN 200520118043
Authority: CN
Inventors: 梁斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-27
Filing date: 2005-09-24
Publication date: 2006-07-05
Anticipated expiration: 2015-09-24

Abstract

The utility model discloses a fast rotary melt filter of an extruder, which is composed of a die body, a filtering net plate and a hydraulic package, wherein the die body is in a separated type and comprises a feeding die body and a discharging die body that are fixedly connected by a screw; the filtering net plate is in a ratchet wheel type, is fixed between the feeding die body and the discharging die body via a rotary shaft, and is provided with a plurality of filtering net holes that are provided with filtering nets inside; the hydraulic package is pivoted on an oil cylinder fixing seat, and comprises two parts which are a hydraulic cylinder and a draw hook, wherein the draw hook is arranged on a piston rod and the front end of the draw hook is provided with a roller device that is clamped with the ratchets of the ratchet wheel type filtering net plate. The utility model can realize fast hydraulic net changing without stopping the extruder, and the filtering area of the utility model is large; the passage of liquor is always kept clear in the process of net changing, which gets the variation of resistance of the filtering net small, and meanwhile, reduces pressure fluctuation of the liquor in the system.

Description

Melt rotating fast filter for extruder

Technical field

The utility model relates to a kind of extrusion machine fused mass filter, particularly a kind of melt rotating fast filter for extruder.

Background technology

Filter is a kind of corollary equipment of producing plastic plate, film extruder that is exclusively used in, and is used for the melt that extruder flows out is filtered.Existing filter is hydraulic control, is made up of die body, screen pack, hydraulic package and seal, and screen pack is generally straight-plate-type, and the one end is built in die body inside, and need carry out the draping action under stopped status; Web plate is provided with a plurality of filter mesh, when work, generally have only the corresponding die body runner of filter mesh through hole, the filter area of the web plate that such structure makes is smaller, and in the draping process, because certain obstruct takes place in the solution passage, make the resistance of solution the time from large to small, alter a great deal, thereby cause that the pressure oscillation in the system is very big by filter screen, need the regular hour just can return to normal production, thereby cause wastage of material to a certain degree.

The utility model content

The purpose of this utility model is to provide a kind of melt rotating fast filter for extruder; can realize not shutting down the hydraulic pressure quick net exchanging; its filter area is bigger; in the draping process, remain the unimpeded of solution passage; make that the change in resistance of screen pack is very little, also reduced the pressure oscillation of solution in system simultaneously.

For achieving the above object, the utility model provides following technical scheme:

A kind of melt rotating fast filter for extruder, form by die body, screen pack and hydraulic package, die body is split type, comprise charging die body and discharging die body, both are fixedly connected by screw, and it is characterized in that: screen pack is a ratchet-type sieve plate, is fixed between charging die body and the discharging die body with a rotating shaft, which is provided with a plurality of filter mesh, be provided with screen pack in the mesh; Described hydraulic package is articulated on the oil cylinder holder, comprises hydraulic cylinder and drag hook two parts, and wherein drag hook is arranged on the piston rod, and its front end is provided with the roller devices that the ratchet with the ratchet-type sieve plate fastens; Be provided with the piston stroke control device between drag hook and the hydraulic cylinder, and be connected a flexible member between the charging die body.

Above-mentioned filter mesh becomes circumference evenly to distribute around the ratchet center.

Above-mentioned filter links to each other with extruder, and both connectors are provided with pressure sensor.

Adopt said structure, can realize not shutting down the hydraulic pressure quick net exchanging.The connector of filter and extruder is provided with pressure sensor; when the obstruction of screen pack arrives certain degree; pressure sensor passes to hydraulic package with signal and makes the oil cylinder piston retraction; and then the drag hook that drive is arranged on the piston rod is synchronized with the movement; thereby driving the ratchet-type screen pack rotates; realize not shutting down the replacing of part or all of filter screen; because of the solution channel sized on the die body can cover two or more filter mesh; make in whole draping process; the solution passage remains unimpeded; it is little that the flow resistance of solution is changed, the pressure oscillation that system is caused seldom, thereby improve utilization ratio of raw materials.

Description of drawings

Fig. 1, three-dimensional combination figure of the present utility model;

Fig. 2, front view of the present utility model;

Fig. 3, three-dimensional exploded view of the present utility model.

The specific embodiment

Shown in Fig. 1,2 and 3, a kind of melt rotating fast filter for extruder, form by die body 1, screen pack 2 and hydraulic package 3, die body 1 is split type, comprise charging die body 11 and discharging die body 12, both are fixedly connected by screw 4, and die body 1 front and back are provided with the runner through hole 13 of perforation, be built-in with heating rod (not looking among the figure) on the die body 1, and be equipped with terminal box 5 outward.

Screen pack 2 is a ratchet-type sieve plate, is fixed between charging die body 11 and the discharging die body 12 with a rotating shaft 21, which is provided with a plurality of filter mesh 22, is provided with screen pack in the mesh 22; Filter mesh 22 becomes circumference evenly to distribute around the ratchet center.Here, the size of runner through hole 13 can cover two or more filter mesh 22, and web plate is provided with six filter mesh 22 in the present embodiment, and any adjacent two mesh, 22 corresponding die body runner through holes 13 are so that melt passes through.

Hydraulic package 3 is articulated on the oil cylinder holder 6, comprises hydraulic cylinder 31 and drag hook 32 two parts, and wherein drag hook 32 is arranged on the piston rod 311, and its front end is provided with the roller devices 321 that the ratchet 23 with ratchet-type sieve plate 2 fastens.Be provided with piston stroke control device 33 between drag hook 32 and the hydraulic cylinder 31, control the anglec of rotation of ratchet web plate 2 by the stroke of control piston bar 311.Be connected a spring 7 between drag hook 32 and the charging die body 11.

Filter links to each other with extruder; both connectors are provided with pressure sensor (not looking among the figure); when the obstruction of screen pack arrives certain degree; pressure sensor passes to hydraulic package 3 with signal and makes the oil cylinder piston retraction; and then the drag hook 32 that drive is arranged on the piston rod 311 is synchronized with the movement; thereby drive ratchet-type screen pack 2 around rotating shaft 21 location that rotates, quick net exchanging is not shut down in realization.

Because of the size of runner through hole 13 can cover two or more filter mesh 22; make solution under the situation that flow remains unchanged; filter area increases, and can be implemented in the replacing of not shutting down part or all of filter screen, in addition; such structure; make in whole draping process, what have a filter mesh 22 at least partly or entirely keeps unimpeded with runner through hole 13, thereby the flow resistance of solution is changed not quite; the pressure oscillation that system is caused has seldom improved utilization ratio of raw materials.

In a word; the utility model is a kind of melt rotating fast filter for extruder; can realize not shutting down the hydraulic pressure quick net exchanging; its filter area is bigger; in the draping process, remain the unimpeded of solution passage 13; make that the change in resistance of screen pack is very little, also reduced the pressure oscillation of solution in system simultaneously, improved utilization ratio of raw materials.

Claims

1, a kind of melt rotating fast filter for extruder, form by die body, screen pack and hydraulic package, die body is split type, comprise charging die body and discharging die body, both are fixedly connected by screw, and it is characterized in that: screen pack is a ratchet-type sieve plate, is fixed between charging die body and the discharging die body with a rotating shaft, which is provided with a plurality of filter mesh, be provided with screen pack in the mesh; Described hydraulic package is articulated on the oil cylinder holder, comprises hydraulic cylinder and drag hook two parts, and wherein drag hook is arranged on the piston rod, and its front end is provided with the roller devices that the ratchet with the ratchet-type sieve plate fastens; Be provided with the piston stroke control device between drag hook and the hydraulic cylinder, and be connected a flexible member between the charging die body.

2, a kind of melt rotating fast filter for extruder as claimed in claim 1 is characterized in that: described filter mesh becomes circumference evenly to distribute around the ratchet center.

3, a kind of melt rotating fast filter for extruder as claimed in claim 1 or 2, it is characterized in that: described filter links to each other with extruder, and both connectors are provided with pressure sensor.