CN104924481A - Polyformaldehyde granulation equipment and screen changer thereof - Google Patents
Polyformaldehyde granulation equipment and screen changer thereof Download PDFInfo
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- CN104924481A CN104924481A CN201510210084.6A CN201510210084A CN104924481A CN 104924481 A CN104924481 A CN 104924481A CN 201510210084 A CN201510210084 A CN 201510210084A CN 104924481 A CN104924481 A CN 104924481A
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- comminutor
- net
- changing device
- feedboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/256—Exchangeable extruder parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/69—Filters or screens for the moulding material
- B29C48/691—Arrangements for replacing filters, e.g. with two parallel filters for alternate use
- B29C48/6912—Arrangements for replacing filters, e.g. with two parallel filters for alternate use the filters being fitted on a single rectilinearly reciprocating slide
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a screen changer capable of being mounted between a granulator for processing polyformaldehyde and a granulation mold head of a granule cutter. The screen changer comprises a feed plate, a discharge plate, and a reciprocating plate clamped between the feed plate and the discharge plate and capable of slipping, wherein the feed plate is provided with a feed hole, and is connected with a fifteenth section of the granulator; the cross section area of one end, opposite to the reciprocating plate, of the feed hole is larger than the cross section area of a through-flow section of an outlet end of the fifteenth section of the granulator; and the discharge plate is provided with a discharge hole, and is directly connected to the granulation mold head of the granule cutter. Original sixteenth and seventeenth sections of the granulator are cancelled, so that the structure of the granulator is simplified, and the structure of the feed hole is changed; and the cross section area of the feed plate is larger than the cross section area of the through-flow section of the fifteenth section to prevent the screen changer from generating excessive pressure drop and to prevent a vacuum pipe from absorbing materials, so that the screen changer can be conveniently installed. The invention further provides polyformaldehyde granulation equipment including the screen changer.
Description
Technical field
The present invention relates to polyformaldehyde processing preparing technical field, particularly relate to a kind of polyformaldehyde Granulation Equipments and net-changing device thereof.
Background technology
Polyformaldehyde prilling is the core process of polyformaldehyde, polymer stabilising process, and degassed and granulation completes by comminutor, and pellet is through centrifugal dehydration, screening, drying, packaging and dispatching from the factory to user.
Existing polyformaldehyde granulation production technology as shown in Figure 1, the arrow in Fig. 1 refer to material and middle produce thing flow through direction.The material that front workshop section comes enters comminutor by feeder 01.Comminutor is parallel dual-screw extruding machine, has 17 sections of cylindrical shells, and every section of cylindrical shell all has heating system 02 control temperature.Molten state is become after the powder entering comminutor is heated by cylindrical shell, when flowing through each section of cylindrical shell of comminutor, the light component that in fused materials, extent of polymerization is lower decomposes gradually and becomes gaseous state and the 6th, 9, 11, extracted out by vavuum pump 03 for 13 sections, comminutor the 16th section 04 and the 17th section 05 is changeover portion, 16th section 04 8 word holes (i.e. the hole of twin-screw cylindrical shell cross section formation) is become single hole, and the sectional area of single hole is less than the orifice area in 8 word holes, 17th section 05 for connecting granulating head 06 and installing the heat taken away with compensation water ring cutting grain of high-power heater, structure as shown in Figure 2.Qualified fused materials becomes through granulating head 06 and pelleter 07 ellipsoidal particle that diameter is 3 ~ 4mm, and pellet is dehydrated, be sent to packing department after drying.
Above-mentioned technique adopts comminutor directly to connect the mode of pelleter 07; there is following shortcoming in it: 1, because every section of cylindrical shell of comminutor all needs the temperature maintaining about 220 DEG C; and cylinder inboard wall always adheres to a certain amount of material during equipment operation; these materials are heated for a long time can carbonization blackening gradually, hardening, can come off after reaching certain thickness along with the rotation of screw rod.The bulk carbonized stock (> 3mm) come off is by the nib of blocking granulating head, make granulating and forming worse and worse, must every cleaning in a several days nib, less carbonized stock may enter finished product through nib and reduce product quality.2, the structure of granulating head 06 as shown in Figures 3 to 5, and needed for shaping particles, the structure of nib 08 is pre-large post-small, and the impurity that shape is suitable easily enters the larger runner in the front portion of nib 08, is then stuck in the hole place of Φ 3, extremely difficult dredging.3, during front system spiral shell block wearing and tearing, can cause in powder and there are tiny iron filings, like this by after granulation, make in final products, to there is iron filings material, affect product quality.
In prior art, the general mode increasing net-changing device that adopts overcomes above-mentioned shortcoming, and net-changing device is a switching device shifter comprising filter screen, for foreign particle and contaminant filter being fallen when plastifying material flows through filter screen.Comminutor carries out heating and melting to the powder of material, makes wherein unstable component decomposition gasification, so comminutor stage casing is designed with vacuum outgas.During normal operation, material melts material is in comminutor cavity bottom, because it has viscosity, so can not be released by vacuum.If the 17th section of 05 granulating head 06 putty connected, cause cavity internal pressure to raise, material melts material will be heaped in cavity, enters vacuum tube under vacuum, causes vacuum port suction plugging.Therefore; for this kind of large-scale comminutor; as net-changing device need be increased in comminutor; general all needs sets up a Melting pump (gear pump) between comminutor outlet and net-changing device entrance; can ensureing that comminutor outlet pressure is low and net-changing device inlet pressure is high like this, making material melts material by overcoming the resistance of net-changing device during net-changing device.
Because after comminutor, serial equipment installs location; if install generally traditional net-changing device; need the space of newly-increased 300mm for installing net-changing device; if and interpolation arranges Melting pump again; need whole comminutor to carry out disassembling and rearranging installing space, waste time and energy, these equipment are installed in sometimes on-the-spot space not enough; so, bring very big inconvenience to production.
Therefore, how being convenient to net-changing device to be installed to polyformaldehyde Granulation Equipments, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
In view of this, the invention provides a kind of net-changing device, this net-changing device can be installed in polyformaldehyde Granulation Equipments easily, saves apparatus arrangement space.
In order to solve the problem, the invention provides a kind of net-changing device, for being installed between the processing comminutor of polyformaldehyde and pelleter, comprise feedboard, reclaiming plate and be clamped in the reciprocating plate of the slip between described feedboard and described reclaiming plate, described feedboard is provided with charging hole, the side of described feedboard is for being connected to the 15th section of comminutor and opposite side is connected to described reclaiming plate, the cross-sectional area of one end that described charging hole is relative with described reciprocating plate is greater than the cross-sectional area of the port of export passage section of the 15th section of described comminutor, described reclaiming plate is provided with discharge opening and granulating head for being connected to described pelleter.
Preferably; in above-mentioned net-changing device; described charging hole is identical with the aperture profile of the aperture profile of the 15th section of relative one end of described comminutor and the 15th section of described comminutor, and is provided with the section of seamlessly transitting for directing material flowing between the aperture, two ends of described charging hole.
Preferably, in above-mentioned net-changing device, the aperture of one end that described charging hole is relative with described reciprocating plate is circular orifice.
Preferably; in above-mentioned net-changing device; the 15th section of described comminutor comprises two intermeshing screw rods and the screw hole for holding two described screw rods; described screw hole comprises the first identical and crossing screw hole of size and the second screw hole, and the cross-sectional area of one end that described charging hole is relative with described reciprocating plate is at least 1.37 times of the cross-sectional area of described first screw hole.
Preferably, in above-mentioned net-changing device, described feedboard and described reclaiming plate are provided with at least one group of electrically heated rod and the heating rod installing hole for electrically heated rod described in plug-in mounting.
Preferably, in above-mentioned net-changing device, described feedboard and described reclaiming plate are provided with the temperature and pressure checkout gear of the temperature and pressure for detecting material and the temperature-detecting device for detecting described electrically heated rod temperature.
A kind of net-changing device provided by the invention; for being installed between the processing comminutor of polyformaldehyde and pelleter; comprise feedboard, reclaiming plate and be clamped in the reciprocating plate of the slip between feedboard and reclaiming plate; feedboard is provided with charging hole; the side of feedboard is for being connected to the 15th section of comminutor and opposite side is connected to reclaiming plate; the cross-sectional area of one end that charging hole is relative with reciprocating plate is greater than the cross-sectional area of the port of export passage section of the 15th section of comminutor, and reclaiming plate is provided with discharge opening and granulating head for being connected to pelleter.This programme eliminates original 16th section and the 17th section of comminutor, the feedboard of net-changing device is connected the 15th section of cylindrical shell of comminutor, the reclaiming plate of net-changing device is directly connected the granulating head of pelleter.And the cross-sectional area of relative for feedboard reciprocating plate side is designed to the cross-sectional area being greater than the 15th section of discharge end passage section, to amplify channel size, reduce resistance, prevent vacuum tube suction plugging.Visible, this programme simplifies the structure of comminutor by the structure changing net-changing device, thus can be installed in polyformaldehyde Granulation Equipments by net-changing device easily.
Present invention also offers a kind of polyformaldehyde Granulation Equipments, comprise comminutor and pelleter, also comprise the net-changing device as described in above-mentioned any one, described net-changing device is installed between described comminutor and described pelleter.The derivation of the beneficial effect that the derivation of the beneficial effect that this polyformaldehyde Granulation Equipments produces and above-mentioned net-changing device bring is substantially similar, therefore repeats no more herein.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram of existing polyformaldehyde comminutor;
Fig. 2 is the 16th section and the 17th section connection structure schematic diagram of existing comminutor;
Fig. 3 is the granulating head structural representation of existing pelleter;
Fig. 4 is the Longitudinal cross section schematic of the nib of granulating head;
Fig. 5 is the Longitudinal cross section schematic of granulating head;
Fig. 6 is the process flow diagram of the polyformaldehyde comminutor after setting up net-changing device in specific embodiment of the invention scheme;
Fig. 7 is the twin-screw hole inner-cavity structure schematic diagram of the 15th section of polyformaldehyde comminutor;
The structural representation of the net-changing device that Fig. 8 provides for specific embodiment of the invention scheme;
Fig. 9 is net-changing device in specific embodiment of the invention scheme and comminutor and granulating head syndeton schematic partial cross-sectional view;
Figure 10 is the overall structure sketch of the net-changing device in specific embodiment of the invention scheme;
Figure 11 is the feedboard structural front view of the net-changing device in specific embodiment of the invention scheme;
Figure 12 is that the A-A of Figure 11 is to sectional view;
Figure 13 is that the B-B of Figure 11 is to sectional view;
Figure 14 is the upward view of Figure 11;
Figure 15 is the reclaiming plate structural front view of the net-changing device in specific embodiment of the invention scheme;
Figure 16 is that the C-C of Figure 15 is to sectional view;
In Fig. 1 to Fig. 5:
Feeder-01, heating system-02, vavuum pump-03, the 16th section-04, the 17th section-05, granulating head-06, pelleter-07, nib-08;
In Fig. 6 to Figure 16:
Feeder-1, heating system-2, vavuum pump-3, 15th section-4, net-changing device-5, granulating head-6, pelleter-7, first screw hole-41, second screw hole-42, first installing hole-43, feedboard-8, reclaiming plate-9, reciprocating plate-10, filter screen-11, drive system-12, electrically heated rod-13, temperature and pressure checkout gear-14, temperature-detecting device-15, charging hole-81, first heating rod installing hole-82, first temperature and pressure detect aperture-83, first temperature detection hole-84, second installing hole-85, sealed step-86, 3rd installing hole-87, first aperture-811, second aperture-812, the section of seamlessly transitting-813, discharge opening-91, second heating rod installing hole-92, 4th installing hole-93, 5th installing hole-94, second temperature detection hole-95, second temperature and pressure detect aperture-96.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The accompanying drawing such as the net-changing device that specific embodiment of the invention scheme provides and the polyformaldehyde Granulation Equipments applied thereof specifically please refer to Fig. 6 to Figure 16.
In a kind of specific embodiment scheme, the invention provides a kind of net-changing device, for being installed between the processing comminutor of polyformaldehyde and pelleter 7, comprise feedboard 8, reclaiming plate 9 and be clamped in the reciprocating plate 10 of the slip between feedboard 8 and reclaiming plate 9, feedboard 8 is provided with charging hole 81, the side of feedboard 8 is for being connected to the 15th section 4 of comminutor and opposite side is connected to reclaiming plate 9, the cross-sectional area of one end that charging hole 81 is relative with reciprocating plate 10 is greater than the cross-sectional area of the port of export passage section of the 15th section 4 of comminutor, reclaiming plate 9 is provided with discharge opening 91 and granulating head 6 for being connected to pelleter 7.
It should be noted that, the cavity cross section that " passage section " of the port of export of the 15th section 4 described herein specifically refers to the 15th section 4 deducts the cavity cross section after screw rod cross section, that is, " passage section " is the cross section of the actual cavity that can flow through of material.
When using net-changing device provided by the invention; original for comminutor the 16th section and the 17th section is removed by this programme; the feedboard 8 of net-changing device is directly connected in the cylindrical shell of the 15th section 4 of comminutor, the reclaiming plate 9 of net-changing device is directly connected the granulating head 6 of pelleter 7.And the cross-sectional area of relative for feedboard 8 reciprocating plate 10 side is designed to the cross-sectional area being greater than the 15th section of 4 discharge end passage section, to amplify channel size, reduce resistance, prevent vacuum tube suction plugging.Visible, this programme simplifies the structure of comminutor by the structure changing net-changing device, thus can be installed in polyformaldehyde Granulation Equipments by net-changing device easily, solves the installation difficulty of comminutor and net-changing device in prior art.
The structure of this net-changing device is introduced in detail below in conjunction with Fig. 6 to Figure 16.
This net-changing device specifically comprises the parts such as feedboard 8, reclaiming plate 9, reciprocating plate 10, drive system 12 and filter screen 11, and this programme all improves the feedboard 8 of net-changing device and reclaiming plate 9.As shown in Figure 9, feedboard 8 is that the cylindrical shell of comminutor the 15th section 4 connects with the transition between net-changing device, and reclaiming plate 9 is that the transition between net-changing device with granulating head 6 connects, and their Main Function is transformational structure and clamping reciprocating plate 10.The comminutor applied due to the present invention is parallel dual-screw extruding machine, the 15th section 4 of comminutor comprises two intermeshing screw rods and the screw hole for holding two screw rods, screw hole comprises the first identical and crossing screw hole 41 and the second screw hole 42 of size, as shown in Figure 7, first screw hole 41 is arranged in parallel with the second screw hole 42 and is crossingly communicated with, so that two screw rods carry out engaged transmission, so, the cross section of the screw hole of the inner barrel of the 15th section 4 is then in 8-shaped hole, these two screw holes being respectively used to hold screw rod are not complete circular cavities, but intersect the cavity of composition for holding twin-screw.Above-mentioned " passage section " cavity cross section after the cross section that this specifically refers to 8-shaped hole deducts the cross section of two screw rods.For the ease of the feedboard 8 of the 15th section 4 and net-changing device is connected and fixed, this programme is provided with multiple the first installing hole 43 for being connected and fixed feedboard 8 on the end face of the 15th section 4, accordingly, feedboard 8 is provided with and the first installing hole 43 second installing hole 85 one to one, and feedboard 8 and the 15th section 4 can select bolted mode to be fixed.
Molten polyformaldehyde temperature of charge in comminutor need be maintained within a certain range, and comminutor each section of cylindrical shell all has larger outer surface, has larger heat loss, so every section of cylindrical shell all needs with the automatic heater heat compensation controlled.Heat tape is applicable to comminutor cylindrical shell for the regular cylindrical shell such as circular or square; and the reciprocating plate 10 of the therebetween filter screen 11 of net-changing device need slide to change screen pack 11; feedboard 8 and reclaiming plate 9 neither the tube structures of rule; therefore be not suitable with the mode of heat tape, the mode of electrically heated rod need be adopted.As shown in figs, feedboard 8 and the barrel of reclaiming plate 9 are all equipped with electrically heated rod 13 and temperature and pressure checkout gear 14, in order to regulate temperature of charge and monitoring material pressure, the arrow in Figure 10 represents the flow direction of material.
Concrete, refer to Figure 11,14,15 and 16, preferably, feedboard 8 and reclaiming plate 9 are provided with at least one group of electrically heated rod 13 and the heating rod installing hole for plug-in mounting electrically heated rod 13.Feedboard 8 is provided with the first heating rod installing hole 82 for installing electrically heated rod 13, reclaiming plate 9 is provided with the second heating rod installing hole 92 for installing electrically heated rod 13, the quantity of the first heating rod installing hole 82 and the second heating rod installing hole 92 and arrangement can be arranged according to the concrete required heating-up temperature of material, are not specifically limited herein.The structure of heating rod installing hole can be through hole or blind hole, such as shown in Figure 11 and Figure 15, heating rod installing hole on feedboard 8 and reclaiming plate 9 all has through hole and blind hole two kinds of versions, according to different length and the diameter of heating rod installing hole, user can select the electrically heated rod 13 of different size, does not repeat herein.
The core component of net-changing device is reciprocating plate 10, and reciprocating plate 10 has two filter plates, when reciprocating plate 10 is moved with oil cylinder reciprocating, realize between two filter plates with switching for subsequent use; Meanwhile, filter plate front portion install filter screen 11, the order number of filter screen 11 can carry out adjusting (usually selecting 50 ~ 60 object filter screens) according to material characteristic and technological parameter.
It should be noted that, net-changing device operationally, because filter plate and filter screen 11 increase stream resistance, the adverse effect of pressure increase can be produced, therefore, in order to eliminate this impact, this programme increases the diameter of net-changing device, namely increase the cavity of material flow when feedboard 8 and filter screen 11, so just make the pressure of material in net-changing device inner chamber reduce.Concrete; as shown in figure 12; the cross-sectional area of one end (i.e. the second aperture 812) that charging hole 81 is relative with reciprocating plate 10 is greater than the cross-sectional area of the port of export passage section of the 15th section 4 of comminutor; the port of export of the 15th section 4 directly connects the first aperture 811 of feedboard 8; therefore, the cross-sectional area in the second aperture 812 is greater than the cross-sectional area in the first aperture 811.
Further; in order to ensure that the pressure in net-changing device and comminutor inner chamber is unlikely to raise; preferably, the cross-sectional area of one end (the second aperture 812) relative with reciprocating plate 10 for charging hole 81 is designed to 1.37 times of the cross-sectional area being at least the first screw hole 41 (or second screw hole 42) by this programme.
When fused materials flows through feedboard 8 from the 15th section 4, the change due to cross section of fluid channel may cause Flow of Goods and Materials to produce dead band, and material can be caused like this to produce the harmful effects such as carbonization.In order to eliminate these impacts; preferably; the aperture profile design of one end (i.e. the first aperture 811) relative with the 15th section 4 of comminutor for charging hole 81 is become identical with the aperture profile of the 15th section 4 of comminutor by this programme, and is provided with the section of seamlessly transitting 813 between the aperture, two ends of charging hole 81.As shown in figure 11, the shape in the aperture of charging hole 81 is identical with the shape in the aperture of the 15th section 4, is 8-shaped pore structure.
The section of seamlessly transitting 813 is for guiding stream flow, because the first aperture 811 is identical with the aperture profile of the 15th section 4, so can not dead angle be there is in the section of seamlessly transitting 813, logistics also would not accumulate in a certain corner of charging hole 81, thus makes material can smoothly by charging hole 81.Figure 12 and Figure 13 analyses and observe from two the cross sectional shape that direction illustrates the section of seamlessly transitting 813 this specific embodiment scheme.Concrete, the shape of the section of seamlessly transitting 813 can be designed as various structures form, its shape mainly designs according to aperture, two ends, changeover portion between aperture, two ends should smoothly without dead angle, straight line, circular arc or curve transition etc. are all passable, therefore, herein the section of seamlessly transitting 813 is not specifically limited.
Further, for the ease of manufacturing processing feedboard 8, preferably, this programme is by the aperture of one end relative with reciprocating plate 10 for charging hole 81, and namely the second aperture 812 is designed to circular orifice.Setting like this, also simplify the structure of reciprocating plate 10, reduces the difficulty of processing of reciprocating plate 10, is convenient to reciprocating plate 10 and operates.
In order to ensure being tightly connected between feedboard 8 and reclaiming plate 9 and reciprocating plate 10, this programme is provided with the sealed step 86 for installing sealing gasket on feedboard 8.Feedboard 8 is provided with the 3rd installing hole 87 for being connected with reclaiming plate 9, and reclaiming plate 9 is then correspondingly provided with the 4th installing hole 93, and both can be bolted to connection.
The operation principle of net-changing device is as follows: because filter screen 11 aperture is very tiny, carbonized stock or other trash flows can be blocked when filter screen 11, along with impurity buildups amount increases, filter screen 11 surface can block, and cause filter screen 11 area to reduce, the anterior pressure of filter screen 11 will increase, when before and after net-changing device, pressure reduction reaches certain value, namely when pressure reaches alarming value, first before filter plate for subsequent use, install new filter screen, and operating cyloinder makes filter plate for subsequent use slide into is in using state; And original being pushed out with filter plate, the filter screen 11 and the impurity that clean out release prepare against next draping, to ensure that unit normally runs.And so forth, the impurity in product reduces in a large number, and product quality is improved.
Preferably, feedboard 8 and reclaiming plate 9 are provided with the temperature and pressure checkout gear 14 of the temperature and pressure for detecting material and the temperature-detecting device 15 for detecting electrically heated rod 13 temperature.
For preventing hypertonia in comminutor machine barrel from causing the overflow of vacuum outgas mouth, fused materials pressure probe need be set, ensure that comminutor cavity internal pressure can not superpressure, in order to avoid cause material melts stockpile long-pending from vacuum port sucking-off.Because machine barrel wall temperature and melting material temperature there are differences certainly, granulation unit at least needs to arrange one group of melting material temperature probe, to monitor heating rod heating-up temperature, controls the temperature of fused materials, impacts material to avoid heating overtemperature.Also need the operation conditions of the pressure reduction monitoring filter screen 11 before and after according to filter screen 11 simultaneously.
Concrete, refer to Figure 11,14,15 and 16, feedboard 8 is provided with the first temperature and pressure detect aperture 83 for installing temperature and pressure checkout gear 14, is also provided with the first temperature detection hole 84 for installing temperature-detecting device 15.Reclaiming plate 9 is provided with the second temperature and pressure detect aperture 96 for installing temperature and pressure checkout gear 14, is also provided with the second temperature detection hole 95 for installing temperature-detecting device 15.
Present invention also offers a kind of polyformaldehyde Granulation Equipments, comprise comminutor and pelleter 7, also comprise net-changing device mentioned above, this net-changing device is installed between comminutor and pelleter 7.The granulation technological process of production of polyformaldehyde Granulation Equipments provided by the invention as shown in Figure 6, the arrow in Fig. 6 refer to material and middle produce thing flow through direction.The material of front workshop section enters comminutor by feeder 1, and the comminutor in the present invention has canceled original 16th section and the 17th section of cylindrical shell, and only remained 15 sections of cylindrical shells altogether, every section of cylindrical shell all has heating system 2 control temperature.Become molten state after the powder entering comminutor is heated by cylindrical shell, when flowing through each section of cylindrical shell of comminutor, the light component that in fused materials, extent of polymerization is lower decomposes gradually and becomes gaseous state and extracted out by vavuum pump 3 at the 6th, 9,11,13 section.The 15th section 4 of comminutor is connected with the feedboard 8 of net-changing device 5; the reclaiming plate 9 of net-changing device 5 is connected with the granulating head 6 of pelleter 7 by the 5th installing hole 94; qualified fused materials becomes through granulating head 6 and pelleter 7 ellipsoidal particle that diameter is 3 ~ 4mm, and pellet is dehydrated, be sent to packing department after drying.
The derivation of the beneficial effect that the derivation of the beneficial effect that this polyformaldehyde Granulation Equipments produces and above-mentioned net-changing device bring is substantially similar, therefore repeats no more herein.
In sum, comminutor, net-changing device and pelleter are carried out integrated design by the present invention, change the connected mode of existing polyformaldehyde comminutor and net-changing device, pelleter; reduced in sizely meet in-site installation demand; and by the change of channel size, reduce resistance, to prevent vacuum tube suction.The invention provides a kind of net-changing device being applicable to existing polyformaldehyde comminutor, with the iron filings material in melting charge during the granulation of filtering polyformaldehyde and carbonized stock, improve the quality of products, ensure the use of downstream client.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a net-changing device, for being installed between the processing comminutor of polyformaldehyde and pelleter (7), it is characterized in that, comprise feedboard (8), reclaiming plate (9) and be clamped in the reciprocating plate (10) of the slip between described feedboard (8) and described reclaiming plate (9), described feedboard (8) is provided with charging hole (81), the side of described feedboard (8) is for being connected to the 15th section (4) of comminutor and opposite side is connected to described reclaiming plate (9), the cross-sectional area of one end that described charging hole (81) is relative with described reciprocating plate (10) is greater than the cross-sectional area of the port of export passage section of the 15th section (4) of described comminutor, described reclaiming plate (9) is provided with discharge opening (91) and granulating head (6) for being connected to described pelleter (7).
2. net-changing device according to claim 1; it is characterized in that; described charging hole (81) is identical with the aperture profile of the aperture profile of the 15th section of one end that (4) are relative of described comminutor and the 15th section (4) of described comminutor, and is provided with the section of seamlessly transitting (813) for directing material flowing between the aperture, two ends of described charging hole (81).
3. net-changing device according to claim 2, is characterized in that, the aperture of one end that described charging hole (81) is relative with described reciprocating plate (10) is circular orifice.
4. net-changing device according to claim 1; it is characterized in that; 15th section (4) of described comminutor comprise two intermeshing screw rods and the screw hole for holding two described screw rods; described screw hole comprises identical and crossing the first screw hole (41) of size and the second screw hole (42), and the cross-sectional area of one end that described charging hole (81) is relative with described reciprocating plate (10) is at least 1.37 times of the cross-sectional area of described first screw hole (41).
5. the net-changing device according to any one of Claims 1-4, it is characterized in that, described feedboard (8) and described reclaiming plate (9) are provided with at least one group of electrically heated rod (13) and the heating rod installing hole for electrically heated rod described in plug-in mounting (13).
6. net-changing device according to claim 5, it is characterized in that, described feedboard (8) and described reclaiming plate (9) are provided with the temperature and pressure checkout gear (14) of the temperature and pressure for detecting material and the temperature-detecting device (15) for detecting described electrically heated rod (13) temperature.
7. a polyformaldehyde Granulation Equipments, comprise comminutor and pelleter (7), it is characterized in that, also comprise the net-changing device as described in any one of claim 1 to 6, described net-changing device is installed between described comminutor and described pelleter (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510210084.6A CN104924481A (en) | 2015-04-29 | 2015-04-29 | Polyformaldehyde granulation equipment and screen changer thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626316A (en) * | 2017-02-23 | 2017-05-10 | 南京杰恩特机电有限公司 | Efficient multifunctional double-screw extruder unit |
| CN111097335A (en) * | 2019-12-17 | 2020-05-05 | 大连橡胶塑料机械有限公司 | Hot oil runner connecting sleeve used between gear pump and net changing device |
| CN115122609A (en) * | 2022-06-28 | 2022-09-30 | 厦门法德尔智能机械有限公司 | Multi-functional screen changer of granulator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2058879U (en) * | 1989-11-04 | 1990-07-04 | 北京化工学院 | Hydraulic two-working-position filting converting device |
| CN201410734Y (en) * | 2009-06-23 | 2010-02-24 | 常州市晨光机械制造有限公司 | Hydraulic pressure double-station filter |
| CN201505995U (en) * | 2009-09-23 | 2010-06-16 | 南京诚盟机械有限公司 | Wide flat-head strip-pulling machine head |
| CN201559305U (en) * | 2009-12-18 | 2010-08-25 | 哈尔滨理工大学 | Polymer melt filter for producing high voltage crosslinkable polyethylene cable material |
| CN102107468A (en) * | 2010-12-17 | 2011-06-29 | 大连橡胶塑料机械股份有限公司 | Large-sized mixing and extrusion granulating set |
| CN203305499U (en) * | 2011-02-25 | 2013-11-27 | 宁波康润机械科技有限公司 | Quick net changing device of extruder |
| CN204673829U (en) * | 2015-04-29 | 2015-09-30 | 云南云天化股份有限公司 | A kind of polyformaldehyde Granulation Equipments and net-changing device thereof |
-
2015
- 2015-04-29 CN CN201510210084.6A patent/CN104924481A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2058879U (en) * | 1989-11-04 | 1990-07-04 | 北京化工学院 | Hydraulic two-working-position filting converting device |
| CN201410734Y (en) * | 2009-06-23 | 2010-02-24 | 常州市晨光机械制造有限公司 | Hydraulic pressure double-station filter |
| CN201505995U (en) * | 2009-09-23 | 2010-06-16 | 南京诚盟机械有限公司 | Wide flat-head strip-pulling machine head |
| CN201559305U (en) * | 2009-12-18 | 2010-08-25 | 哈尔滨理工大学 | Polymer melt filter for producing high voltage crosslinkable polyethylene cable material |
| CN102107468A (en) * | 2010-12-17 | 2011-06-29 | 大连橡胶塑料机械股份有限公司 | Large-sized mixing and extrusion granulating set |
| CN203305499U (en) * | 2011-02-25 | 2013-11-27 | 宁波康润机械科技有限公司 | Quick net changing device of extruder |
| CN204673829U (en) * | 2015-04-29 | 2015-09-30 | 云南云天化股份有限公司 | A kind of polyformaldehyde Granulation Equipments and net-changing device thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106626316A (en) * | 2017-02-23 | 2017-05-10 | 南京杰恩特机电有限公司 | Efficient multifunctional double-screw extruder unit |
| CN111097335A (en) * | 2019-12-17 | 2020-05-05 | 大连橡胶塑料机械有限公司 | Hot oil runner connecting sleeve used between gear pump and net changing device |
| CN115122609A (en) * | 2022-06-28 | 2022-09-30 | 厦门法德尔智能机械有限公司 | Multi-functional screen changer of granulator |
| CN115122609B (en) * | 2022-06-28 | 2024-04-09 | 厦门法德尔智能机械有限公司 | Multifunctional net changer of granulator |
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Application publication date: 20150923 |