CN202162990U

CN202162990U - Nonstop long-acting filter for extruding machine

Info

Publication number: CN202162990U
Application number: CN2011202346909U
Authority: CN
Inventors: 邹洪涛
Original assignee: CHANGZHOU CHUANGXIN KNOWLEDGE PROPERTY AGENCY CO LTD
Current assignee: CHANGZHOU CHUANGXIN KNOWLEDGE PROPERTY AGENCY CO LTD
Priority date: 2011-06-30
Filing date: 2011-06-30
Publication date: 2012-03-14
Anticipated expiration: 2021-06-30

Abstract

The utility model relates to a nonstop long-acting filter for an extruding machine. The nonstop long-acting filter for the extruding machine comprises a filter cylinder shell and a filter device arranged in an inner cavity of the filter cylinder shell, wherein the filter cylinder shell is provided with a feed inlet and a discharge outlet, two sets of filter devices as complementary standby devices are arranged in an inner cavity of a filter screen shell in parallel, a separation plate is arranged between the two sets of filter devices, a feeding cavity is formed among the inner wall of the filter screen shell, the side wall of the separation plate and a filter screen, a discharging cavity is formed between the inner wall of a filter screen cylinder and a flow splitting body, the two ends of the separation plate are respectively provided with a feed end and a discharge end, the feed end and the discharge end are communicated with the feeding cavity and the discharging cavity correspondingly, an inlet reversing valve is mounted on the feed end, the inlet of the inlet reversing valve is communicated with the feed inlet, an outlet reversing valve is mounted on the discharge end, the outlet of the outlet reversing valve is communicated with the discharge outlet, an end cap is arranged at one end of each filter device, and the end cap is detachably mounted on the filter cylinder shell. In the utility model, the replacement operation of filter screens is realized in the nonstop state with the adoption of the two filter devices connected in parallel, and the continuous production requirement is met.

Description

Extruder is with not shutting down long-acting filter

Technical field

The utility model relates to the filter technology field of plastics machinery, and especially a kind of extruder is with not shutting down long-acting filter.

Background technology

In plastics machinery, filter also is a critical component, and plastic raw materials is extruded the back through the extruder heating spiral rod and got into filter net device; Because the plastic raw materials overwhelming majority can not adopt brand-new material article of manufacture, need add various auxiliary materials in process of production, like color material, modification agent etc.; Also can add a certain proportion of recovery cycle stock in the plastics that can be recycled; Because the impurity that contains in these auxiliary materials is more, contains post-production and use that impurity can influence product in the extruded product, filter makes material obtain filtering; And can improve the mixed effect of material, so filter has become necessary part.Traditional long-acting filter comprises the filter cylinder shell, is arranged on screen tube, branch fluid, preceding plug, back plug and heater in the filter cylinder shell.The two ends of filter cylinder shell are respectively through preceding plug and back plug sealing; Divide fluid to be arranged on the screen tube inner chamber; Have several through holes on the screen tube; The screen tube skin is coated with one or more layers screen pack, and the filter cylinder shell is provided with charging aperture and discharging opening, and a plurality of cylindrical heaters are arranged on the housing of filter screen shell.Operation principle: the plastic raw materials that extruder is extruded molten condition gets into filter cylinder from charging aperture, is concentrated by minute fluid after filtering and extrudes to discharging opening, gets into down to operation again.Because the particularity of the production of plastic raw materials extruding raw material, spray silk or going out in the membrane process, needs through being heated into molten condition; Could be formed the goods of different shape by mould, and all need not shut down use, the clean pressure that screen pack produced is less; If impurities more for a long time in the plastic raw materials, filter screen takes place to stop up over pressure and cause danger, along with the increase of pressure; It is many that amount of impurities in the plastics of being held back on the screen pack just becomes, thereby block screen pack.Therefore after filter screen blocks, should in time change filter screen, must shut down when changing filter screen, when changing the screen pack that blocks.The quantity-produced later process is brought influence, and shutdown need be heated again after changing the filter screen reparation, got into later process again, wastes energy, produces substandard products, causes waste.

The utility model content

The technical problem that the utility model will solve is: in order to solve the deficiency of prior art, the utility model provides a kind of extruder with not shutting down long-acting filter, adopts two filters of parallel connection to realize not shutting down the draping operation, satisfies continuous production requirement.

The utility model solves the technical scheme that its technical problem adopted: a kind of extruder comprises the filter cylinder shell and is arranged on the filter in the filter cylinder shell inner cavity to have charging aperture and discharging opening on the filter cylinder shell with not shutting down long-acting filter; Described filter comprises screen tube and the coaxial branch fluid that is arranged in the screen tube; Have several through holes on the cylindrical shell of screen tube, the screen tube skin is coated with screen pack, and parallel connection is provided with the subsequent use each other filter of two covers in the described filter screen shell inner cavity; Be provided with demarcation strip between the two sets filtering device; Form feed cavity between the inwall of filter screen shell and demarcation strip sidewall and the screen pack, form the discharging chamber between screen tube inwall and the branch fluid, the two ends of demarcation strip are respectively feed end that communicates with feed cavity and the discharge end that communicates with the discharging chamber; The import reversal valve is installed on the feed end; The import of import reversal valve is communicated with charging aperture, and the outlet reversal valve is installed on the discharge end, and the outlet of outlet reversal valve is communicated with discharging opening; One end of filter is equipped with plug, and plug detachably is installed in the filter cylinder shell.

For making reversal valve be convenient to operation, described import reversal valve and outlet reversal valve include reversing valve core and pedestal are installed, and pedestal is installed is installed on the filter cylinder shell, and the external part of reversing valve core passes the installation pedestal and extend out to outside the filter cylinder shell.

It is smooth and easy for material is flowed in the filter cylinder shell inner cavity; Raise the efficiency, the branch fluid of described filter has a guiding cone, and the great circle of guiding cone is directly held with the screen tube inwall and is fixedly connected; The larger diameter end of guiding cone also has a bullet that is used for shutoff screen tube end face; Have the passage that supplies fused materials entering feed cavity between bullet and the filter cylinder shell, divide the smaller diameter end of fluid to stretch out screen tube, screen tube is fixedly connected with plug near an end of the minor diameter of guiding cone; Have the passage that supplies fused materials to flow out between the smaller diameter end of guiding cone and the plug, have the perforate that communicates with demarcation strip top discharge end on the plug.

For for convenience detach, the great circle of described guiding cone is directly held with the screen tube inner thread and is removably connected, and screen tube removably connects near an end and the plug screw thread of the minor diameter of guiding cone.

The beneficial effect of the utility model is that the extruder of the utility model realizes do not shut down replacing filter through regulating the import reversal valve with the outlet reversal valve with not shutting down the two sets filtering device that long-acting filter adopts parallel connection to be provided with; Need not regulate any operation of extruder during replacing, input and output material does not have significant change, thereby guarantees the later process operate as normal; Reduce the generation of substandard products; Shutdown operation is not enhanced productivity, and energy savings is saved time; Save material, after the detachable back of filter net device that is in the state of quitting work is changed or is cleaned for future use.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further specified.

Fig. 1 is that the extruder of the utility model is used the structural representation of not shutting down long-acting filter most preferred embodiment;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is that Fig. 1 is the B-B cutaway view;

Fig. 4 is the structural representation after the import reversal valve rotates 90 ° with the outlet reversal valve among Fig. 1;

Among the figure: 1. filter cylinder shell, 2. filter, 21. screen tubes, 22. fens fluids, 22-1. guiding cone, 22-2. bullet, 3. demarcation strip, 31. feed ends, 32. discharge ends, 4. import reversal valve, 5. outlet reversal valve, 6. plug.

The specific embodiment

Combine accompanying drawing that the utility model is done further detailed explanation now.These accompanying drawings are the sketch map of simplification, the basic structure of the utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

Fig. 1-the 4th, the extruder of the utility model is with the most preferred embodiment of not shutting down long-acting filter; Comprise filter cylinder shell 1 and be arranged on the filter 2 in filter cylinder shell 1 inner chamber, have charging aperture and discharging opening on the filter cylinder shell 1, filter 2 comprises screen tube 21 and the coaxial branch fluid 22 that is arranged in the screen tube 21; Have several through holes on the cylindrical shell of screen tube 21; Screen tube 21 skins are coated with screen pack, and parallel connection is provided with the subsequent use each other filter 2 of two covers in filter screen shell 1 inner chamber, has the demarcation strip 3 with filter cylinder shell 1 integrative-structure between the two sets filtering device 2; Form feed cavity between the inwall of filter screen shell 1 and demarcation strip 3 sidewalls and the screen pack; Form the discharging chamber between screen tube 21 inwalls and the branch fluid 22, the two ends of demarcation strip 3 are respectively feed end 31 that communicates with feed cavity and the discharge end 32 that communicates with the discharging chamber, and import reversal valve 4 is installed on the feed end 31; The import of import reversal valve 4 is communicated with charging aperture; Outlet reversal valve 5 is installed on the discharge end 32, and the outlet of outlet reversal valve 5 is communicated with discharging opening, and an end of filter 2 is equipped with plug 6; Plug 6 detachably is installed in filter cylinder shell 1, and usual manner is that plug 6 is threaded with filter cylinder shell 1.

Import reversal valve 4 and outlet reversal valve 5 include reversing valve core and pedestal are installed, and pedestal is installed is installed on the filter cylinder shell 1, and the external part of reversing valve core passes the installation pedestal and extend out to outside the filter cylinder shell 1.

The branch fluid 22 of filter 2 has a guiding cone 22-1; The great circle of guiding cone 22-1 is directly held with screen tube 21 inner threads and is removably connected; The larger diameter end of guiding cone 22-1 also has a bullet 22-2 who is used for shutoff screen tube 21 end faces; Have between bullet 22-2 and the filter cylinder shell 1 and supply fused materials to get into the passage of feed cavity; Divide the smaller diameter end of fluid 22 to stretch out screen tube 21; Screen tube 21 removably connects near an end and plug 6 screw threads of the minor diameter of guiding cone 22-1, has the passage that supplies fused materials to flow out between the smaller diameter end of guiding cone 22-1 and the plug 6, has the perforate that communicates with demarcation strip 3 top discharge ends 32 on the plug 6.

The utility model has changed traditional filtration device structure, and real realization need not shut down the purpose of draping, and the screen tube 21 of employing is a core structure, and filter area is big.Need regulate import reversal valve 4 and outlet reversal valve 5 during use simultaneously, make a filter 2 in running order, another is in halted state, and can change this moment to the filter 2 that is in halted state, screen pack cleaned for future use again.

Shown in Figure 1, the filter 2 of below is in running order, and the filter 2 of top is in halted state.Fused materials gets into from the charging aperture on the filter cylinder shell 1; The feed cavity of filter 2 below getting under the effect of import reversal valve 4; Fused materials filters through screen pack and gets into screen tube 21 inner chambers; Impurity is filtered net and removes, and fused materials gets into outlet reversal valve 5 backs through the guiding of dividing fluid 22 and flows out from discharging opening, accomplishes the filter operation of material.

Shown in Figure 2, after operation simultaneously made import reversal valve and outlet reversal valve rotate 90 °, the filter 2 of top was in running order, and the filter 2 of below is in halted state.Fused materials gets into from the charging aperture on the filter cylinder shell 1; The feed cavity of filter 2 above getting under the effect of import reversal valve 4; Fused materials filters through screen pack and gets into screen tube 21 inner chambers; Impurity is filtered net and removes, and fused materials gets into outlet reversal valve 5 backs through the guiding of dividing fluid 22 and flows out from discharging opening, accomplishes the filter operation of material.

With above-mentioned desirable embodiment according to the utility model is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must confirm its technical scope according to the claim scope.

Claims

1. an extruder is with not shutting down long-acting filter; Comprise filter cylinder shell (1) and be arranged on the filter (2) in filter cylinder shell (1) inner chamber; The filter cylinder shell has charging aperture and discharging opening on (1), and described filter (2) comprises screen tube (21) and the coaxial branch fluid (22) that is arranged in the screen tube (21), has several through holes on the cylindrical shell of screen tube (21); Screen tube (21) skin is coated with screen pack; It is characterized in that: parallel connection is provided with the subsequent use each other filter (2) of two covers in described filter screen shell (1) inner chamber, has demarcation strip (3) between the two sets filtering device (2), forms feed cavity between the inwall of filter screen shell (1) and demarcation strip (3) sidewall and the screen pack; Form the discharging chamber between screen tube (21) inwall and the branch fluid (22); The two ends of demarcation strip (3) are respectively feed end (31) that communicates with feed cavity and the discharge end (32) that communicates with the discharging chamber, and import reversal valve (4) is installed on the feed end (31), and the import of import reversal valve (4) is communicated with charging aperture; Outlet reversal valve (5) is installed on the discharge end (32); The outlet of outlet reversal valve (5) is communicated with discharging opening, and an end of filter (2) is equipped with plug (6), and plug (6) detachably is installed in filter cylinder shell (1).

2. extruder as claimed in claim 1 is with not shutting down long-acting filter; It is characterized in that: described import reversal valve (4) and outlet reversal valve (5) include reversing valve core and pedestal are installed; Pedestal is installed is installed on the filter cylinder shell (1), the external part of reversing valve core passes the installation pedestal and extend out to outside the filter cylinder shell (1).

3. extruder as claimed in claim 1 is with not shutting down long-acting filter; It is characterized in that: the branch fluid (22) of described filter (2) has a guiding cone (22-1); The great circle of guiding cone (22-1) is directly held with the installation of screen tube (21) inwall and is connected; The larger diameter end of guiding cone (22-1) also has a bullet (22-2) that is used for shutoff screen tube (21) end face; Have the passage that supplies fused materials entering feed cavity between bullet (22-2) and the filter cylinder shell (1), divide the smaller diameter end of fluid (22) to stretch out screen tube (21), screen tube (21) is installed with plug (6) near an end of the minor diameter of guiding cone (22-1) and is connected; Have the passage that supplies fused materials to flow out between the smaller diameter end of guiding cone (22-1) and the plug (6), have the perforate that communicates with demarcation strip (3) top discharge end (32) on the plug (6).

4. extruder as claimed in claim 3 is with not shutting down long-acting filter; It is characterized in that: the great circle of described guiding cone (22-1) is directly held with screen tube (21) inner thread and is removably connected, and screen tube (21) removably connects near an end and plug (6) screw thread of the minor diameter of guiding cone (22-1).