CN202878636U - Non-stop double-position screen exchanger of plastic extruder - Google Patents
Non-stop double-position screen exchanger of plastic extruder Download PDFInfo
- Publication number
- CN202878636U CN202878636U CN 201220387565 CN201220387565U CN202878636U CN 202878636 U CN202878636 U CN 202878636U CN 201220387565 CN201220387565 CN 201220387565 CN 201220387565 U CN201220387565 U CN 201220387565U CN 202878636 U CN202878636 U CN 202878636U
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- filter
- fuselage
- plastic extruder
- feed cavity
- changing device
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a non-stop double-position screen exchanger of a plastic extruder, comprising a machine body, filter devices, a sealing cover, a three-way valve and a pressure fluid director, wherein the filter devices are arranged in the inner cavity of the machine body, and the filter devices are provided with filter plates and filter nets; the sealing cover and the pressure fluid director are installed on the machine body via fastening pieces; the filter plates and the filter nets are arranged in a guide groove of the inner part of the sealing cover in turn; the inner cavity of the machine body is provided with a T-shaped feeding cavity, the two shoulder ends of the T-shaped feeding cavity are respectively connected with two groups of the filter devices by a manner of sealing, and the three-way valve which can be axially rotated is arranged on the intersection parts; the two inner ends of the pressure fluid director are provided with L-shaped guide feeding cavities; the feeding openings of the guide feeding cavities corresponded to the discharging openings on the machine body; and self-sealing valves are arranged in the guide feeding cavities by a manner of sliding. The non-stop double-position screen exchanger of the plastic extruder adopts two groups of the filter devices to realize the non-stop screen exchanging operation by a manner of adjusting reversing valves, so that the efficiency is improved, the time is saved, the cost is reduced, the process is simple, and the maintenance is convenient.
Description
Technical field
The utility model relates to the filter technology field of plastics machinery, particularly relates to a kind of not stop double-station net-changing device of plastic extruder.
Background technology
Net-changing device is a kind of manually or automatically switching device shifter that comprises one or more filter screens, is used for when plastifying material flows through filter screen foreign particle and contaminant filter being fallen.Net-changing device can be installed on any new or existing plastic extruder, Melt Pump, reactor or other extruding production line.At present, mainly contain the automatic net-changing device of manual screen changer and hydraulic pressure on the market.
In plastics machinery, manual screen changer is exactly directly by switching manually net exchanging device.Manual screen changer has volume small and exquisite, the advantage such as with low cost, in actual production process, the plastic raw materials overwhelming majority can not adopt brand-new material to produce, need add in process of production various auxiliary materials, such as 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, containing impurity in the extruded product can affect post-production and the use of product, filter makes material obtain filtering, and can improve boring mixed effect, so filter has become a requisite part.Because the particularity of the production of plastic raw materials; extruding raw material, spray silk or going out in the membrane process; need to be formed the goods of various shapes by mould, and all need not shut down use through being heated into molten condition; the pressure that clean screen pack is produced is less; when if impurities is more in the plastic raw materials, screen pack can stop up over pressure and cause danger, along with the increase of pressure; impurity on the screen pack in the residual plastics is more and more, thereby stops up screen pack.Therefore should in time change screen pack after screen pack blocks, and must shut down during the replacing screen pack, this just brings impact to the quantity-produced subsequent handling; and need again to heat after shutting down the reparation of replacing screen pack; reenter later process, caused energy waste, also substandard products can occur.
The automatic net-changing device of hydraulic pressure then is to switch back and forth draping plate or draping post by baroque Hydraulic Station, and the automatic net-changing device of hydraulic pressure has volume compact, the advantages such as back-pressure sealing is good, and draping speed is rapid, but cost is higher, hydraulic structure is complicated, can not save cost to enterprise, brings benefit.
Therefore, need to seek a kind of brand-new material that both can be used for, can be used for again reworked material, and cost be low, high efficiency do not shut down net-changing device.
The utility model content
The purpose of this utility model is to overcome the defective that prior art exists, and a kind of draping that can realize not shutting down is provided, and improves effect; Reduce use cost, remarkable in economical benefits; Technique is simple, the not stop double-station net-changing device of plastic extruder easy to maintenance.
The technical scheme that realizes the utility model purpose is: a kind of not stop double-station net-changing device of plastic extruder has fuselage, filter, seal cover and three-way valve; Described filter has two groups, and is symmetricly set in the inner chamber of fuselage, and filter has filter and screen pack; Has equally distributed through hole on the described filter; Described seal cover is fixedly mounted on the fuselage by securing member; Described filter and screen pack are successively set in the guiding gutter of seal cover inside; Has "T"-shaped feed cavity in the inner chamber of described fuselage; Two point of shoulder sections of described "T"-shaped feed cavity are tightly connected with two groups of filters respectively, but the junction of "T"-shaped feed cavity is provided with the three-way valve of axial rotation; Also has the pressure air deflector; Described pressure air deflector is fixedly mounted on the fuselage by securing member, and the two ends in the pressure air deflector all have the water conservancy diversion feed cavity of " L " shape; Discharging opening setting on the corresponding fuselage of the charging aperture of described water conservancy diversion feed cavity, two water conservancy diversion feed cavity are interconnected and merge into a discharge end, and sliding in the water conservancy diversion feed cavity is provided with enclosed valve.
The width in the cross section of the described enclosed valve of technique scheme is less than the diameter of the discharging opening of pressure air deflector, the diameter of enclosed valve is greater than the diameter of the discharging opening of pressure air deflector, and the corner of the water conservancy diversion feed cavity at two ends, the enclosed valve left and right sides has corresponding upper process and lower process; Distance between the opposite face of described upper process and lower process is less than vertical height of enclosed valve.
Technique scheme also has the temperature and pressure integrative sensor; The corresponding screen pack setting of described temperature and pressure integrative sensor.
The described three-way valve of technique scheme has spool, connecting rod and mount pad; The radial section of described connecting rod is polygon; The top of described spool has the socket corresponding with the radial section of connecting rod, and an end of spool and connecting rod is pegged graft; Described mount pad is socketed on the connecting rod that stretches out fuselage, and is threaded with fuselage, is convenient to the three-way valve commutation.
Also be provided with some flat spring sheets between the described mount pad of technique scheme and the spool; Described spring leaf all is socketed on the connecting rod.
The described spool of technique scheme is taper type.
The cross section of the described guiding gutter of technique scheme is wedge shape.
The radial section of the described connecting rod of technique scheme is quadrangle.
After adopting technique scheme, the utlity model has following positive effect:
(1) the utility model both can be used for brand-new material production, can be used for reworked material production again; Adopt two groups of filters, realized not shutting down draping by adjustable change valve, improved effect, saved the time; Reduced use cost, remarkable in economical benefits; Technique is simple, and is easy to maintenance.
(2) the corresponding screen pack setting of temperature and pressure integrative sensor of the present utility model, when the temperature and pressure integrative sensor detects when too high or too low for temperature, system regulates temperature automatically, avoids material to be watery or the solid shape; Simultaneously, the temperature and pressure integrative sensor detects the pressure on the screen pack, and when pressure was excessive, automatic or manual regulating three-way valve door was another group filter work, is convenient to not shut down draping.
(3) spool of the present utility model is taper type, also is provided with some flat spring sheets between mount pad and the spool; Spring leaf all is socketed on the connecting rod; When becoming flexible appears in spool, can position spool by tightening mount pad.
(4) the utility model adopts three-way valve to cooperate with the pressure air deflector, can realize that list is organized filter work and two groups of filters are worked simultaneously.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and the below is described in further detail the utility model, wherein according to specific embodiment also by reference to the accompanying drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of filter of the present utility model;
Fig. 3 is the cross section signal of the left side filter work at A-A place among Fig. 1;
Fig. 4 is the schematic cross-section of the right side filter work at A-A place among Fig. 1;
Fig. 5 is the schematic cross-section that the double-side filtering device at A-A place among Fig. 1 is worked simultaneously;
1. fuselages among the figure, 11. "T"-shaped feed cavity, 2. filters, 21. filter, 211. through holes, 22. screen packs, 3. seal cover, 31. guiding gutters, 4. three-way valve, 41. spool, 42. connecting rods, 43. mount pads, 44. spring leaf, 5. pressure air deflector, 51. water conservancy diversion feed cavity, 52. enclosed valve, 53. upper process, 54. lower process.
The specific embodiment
(embodiment 1)
See Fig. 1 and Fig. 2, the utlity model has fuselage 1, filter 2, seal cover 3, three-way valve 4 and pressure air deflector 5; Filter 2 has two groups, and is symmetricly set in the inner chamber of fuselage 1, and filter 2 has filter 21 and screen pack 22; Has equally distributed through hole 211 on the filter 21; Seal cover 3 is fixedly mounted on the fuselage 1 by securing member; Filter 21 and screen pack 22 are successively set in the guiding gutter 31 of wedge shape of seal cover 3 inside; Has "T"-shaped feed cavity 11 in the inner chamber of fuselage 1; Two point of shoulder sections of "T"-shaped feed cavity 11 are tightly connected with two groups of filters 2 respectively, but the junction of "T"-shaped feed cavity 11 is provided with the three-way valve 4 of axial rotation; Three-way valve 4 has spool 41, connecting rod 42 and mount pad 43; The radial section of connecting rod 42 is quadrangle; Spool 41 is taper type, and the top of spool 41 has the socket corresponding with the radial section of connecting rod 42, and spool 41 is pegged graft with an end of connecting rod 42; Mount pad 43 is socketed on the connecting rod 42 that stretches out fuselage 1, and is threaded with fuselage 1.Also be provided with some flat spring sheets 44 between mount pad 43 and the spool 41; Spring leaf 44 all is socketed on the connecting rod 42.
Also has the temperature and pressure integrative sensor; The corresponding screen pack 22 of temperature and pressure integrative sensor arranges.
Operation principle of the present utility model is: see Fig. 3 and Fig. 4, net-changing device is installed in plastic extruder foremost.Plastic raw materials reaches through heating when producing required temperature, by the extruder barrel extrusion flow to three-way valve 4, controlled the flow direction of plastic liquid by three-way valve 4, high being pressed in first group of filter 2 again, in the plastic liquid high pressure feed pressure this moment air deflector 5 after filtering, owing to pressure-acting, the enclosed valve 52 in the pressure air deflector 5 is pushed to the upper process 53 and lower process 54 formed bottleneck of second group of filter 2 below correspondence; Treat that the impurity on the screen pack 22 in the work constantly increases when reaching certain pressure, the temperature and pressure integrative sensor sends the signal that needs draping, three-way valve 4 automatic or manuals switch to 2 work of second group of filter with plastic liquid, because pressure-acting, enclosed valve 52 in the pressure air deflector 5 slides into the upper process 53 and lower process 54 formed bottleneck of first group of filter 2 below correspondence, at this moment, second group of filter 2 work, first group of filter 2 quits work, with changing first group of screen pack 22; Circulation is not shut down draping, the purpose of energy-saving consumption-reducing thereby reach in the production process successively.
See Fig. 5, the utility model also can work two groups of filters 2 by adjusting three-way valve 4 simultaneously, and at this moment, because pressure-acting, the enclosed valve 52 in the pressure air deflector 5 slides into the central authorities of the discharging opening of pressure air deflector 5.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. the not stop double-station net-changing device of a plastic extruder has fuselage (1), filter (2), seal cover (3) and three-way valve (4); Described filter (2) has two groups, and is symmetricly set in the inner chamber of fuselage (1), and filter (2) has filter (21) and screen pack (22); Has equally distributed through hole (211) on the described filter (21); Described seal cover (3) is fixedly mounted on the fuselage (1) by securing member; Described filter (21) and screen pack (22) are successively set in the inner guiding gutter (31) of seal cover (3); Has "T"-shaped feed cavity (11) in the inner chamber of described fuselage (1); Two point of shoulder sections of described "T"-shaped feed cavity (11) are tightly connected with two groups of filters (2) respectively, "T"-shaped feed cavity (11) but the junction be provided with the three-way valve (4) of axial rotation; It is characterized in that: also have pressure air deflector (5); Described pressure air deflector (5) is fixedly mounted on the fuselage (1) by securing member, and the two ends in the pressure air deflector (5) all have the water conservancy diversion feed cavity (51) of " L " shape; Discharging opening setting on the corresponding fuselage of the charging aperture of described water conservancy diversion feed cavity (51) (1), two water conservancy diversion feed cavity (51) are interconnected and merge into a discharge end, and sliding in the water conservancy diversion feed cavity (51) is provided with enclosed valve (52).
2. the not stop double-station net-changing device of plastic extruder according to claim 1, it is characterized in that: the width in the cross section of described enclosed valve (52) is less than the diameter of the discharging opening of pressure air deflector (5), the diameter of enclosed valve (52) is greater than the diameter of the discharging opening of pressure air deflector (5), and the corner of the water conservancy diversion feed cavity (51) at enclosed valve (52) two ends, the left and right sides has corresponding upper process (53) and lower process (54); Distance between the opposite face of described upper process (53) and lower process (54) is less than vertical height of enclosed valve (52).
3. the not stop double-station net-changing device of plastic extruder according to claim 2 is characterized in that: also have the temperature and pressure integrative sensor; The corresponding screen pack of described temperature and pressure integrative sensor (22) arranges.
4. according to claim 1 and 2 or the not stop double-station net-changing device of 3 described plastic extruders, it is characterized in that: described three-way valve (4) has spool (41), connecting rod (42) and mount pad (43); The radial section of described connecting rod (42) is polygon; The top of described spool (41) has the socket corresponding with the radial section of connecting rod (42), and spool (41) is pegged graft with an end of connecting rod (42); Described mount pad (43) is socketed on the connecting rod (42) that stretches out fuselage (1), and is threaded with fuselage (1).
5. the not stop double-station net-changing device of plastic extruder according to claim 4 is characterized in that: also be provided with some flat spring sheets (44) between described mount pad (43) and the spool (41); Described spring leaf (44) all is socketed on the connecting rod (42).
6. the not stop double-station net-changing device of plastic extruder according to claim 5, it is characterized in that: described spool (41) is taper type.
7. the not stop double-station net-changing device of plastic extruder according to claim 6, it is characterized in that: the cross section of described guiding gutter (31) is wedge shape.
8. the not stop double-station net-changing device of plastic extruder according to claim 7, it is characterized in that: the radial section of described connecting rod (42) is quadrangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220387565 CN202878636U (en) | 2012-08-07 | 2012-08-07 | Non-stop double-position screen exchanger of plastic extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220387565 CN202878636U (en) | 2012-08-07 | 2012-08-07 | Non-stop double-position screen exchanger of plastic extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202878636U true CN202878636U (en) | 2013-04-17 |
Family
ID=48070098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220387565 Expired - Fee Related CN202878636U (en) | 2012-08-07 | 2012-08-07 | Non-stop double-position screen exchanger of plastic extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202878636U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786470A (en) * | 2015-05-12 | 2015-07-22 | 陈友春 | Double tee plastic extruder |
| CN105216280A (en) * | 2015-10-12 | 2016-01-06 | 浙江阳阳包装有限公司 | A kind of feed arrangement of inflation film manufacturing machine |
| CN108407262A (en) * | 2018-04-28 | 2018-08-17 | 青岛科技大学 | A kind of rotary quick net-changing device device |
-
2012
- 2012-08-07 CN CN 201220387565 patent/CN202878636U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786470A (en) * | 2015-05-12 | 2015-07-22 | 陈友春 | Double tee plastic extruder |
| CN105216280A (en) * | 2015-10-12 | 2016-01-06 | 浙江阳阳包装有限公司 | A kind of feed arrangement of inflation film manufacturing machine |
| CN108407262A (en) * | 2018-04-28 | 2018-08-17 | 青岛科技大学 | A kind of rotary quick net-changing device device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20150807 |
|
| EXPY | Termination of patent right or utility model |