CN110421821A - A kind of polystyrene carbon dioxide extrusion foaming is not with shutting down net exchanging device - Google Patents
A kind of polystyrene carbon dioxide extrusion foaming is not with shutting down net exchanging device Download PDFInfo
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- CN110421821A CN110421821A CN201910845011.2A CN201910845011A CN110421821A CN 110421821 A CN110421821 A CN 110421821A CN 201910845011 A CN201910845011 A CN 201910845011A CN 110421821 A CN110421821 A CN 110421821A
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- strainer
- channel
- filtration
- packing ring
- rotary packing
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 26
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 26
- 238000001125 extrusion Methods 0.000 title claims abstract description 23
- 238000005187 foaming Methods 0.000 title claims abstract description 20
- 239000004793 Polystyrene Substances 0.000 title claims abstract description 18
- 229920002223 polystyrene Polymers 0.000 title claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 91
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000012856 packing Methods 0.000 claims description 64
- 230000008676 import Effects 0.000 claims description 47
- 239000011159 matrix material Substances 0.000 claims description 46
- 230000007704 transition Effects 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 10
- 238000010924 continuous production Methods 0.000 abstract description 5
- 230000003252 repetitive effect Effects 0.000 abstract description 5
- 239000004033 plastic Substances 0.000 description 26
- 229920003023 plastic Polymers 0.000 description 26
- 238000004519 manufacturing process Methods 0.000 description 13
- 239000012535 impurity Substances 0.000 description 10
- 239000004088 foaming agent Substances 0.000 description 9
- 239000000155 melt Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000004927 fusion Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229920006248 expandable polystyrene Polymers 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008542 thermal sensitivity Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of polystyrene carbon dioxide extrusion foaming with net exchanging device is not shut down, and belongs to the technical field for squeezing equipment.There are two slide type filter elements for present invention setting, are inserted into two through-hole sliding slots in net exchanging device main body respectively, and strainer is in filtration channel after inserting in place.When normal filtration works, two filtration channels and two slide type filter elements are worked at the same time.When needing to change strainer, another slide type filter screen unit and filtration channel work on, slide type filter screen unit to draping is moved out to draping position, simultaneously closes off corresponding filtration channel under oil cylinder effect, and dirty strainer to be removed is moved back into operating position after installing clean strainer.The strainer in another slide type filter screen unit is replaced in repetitive operation.The present invention, which conveniently and efficiently realizes, not to shut down draping, guarantees normal continuous production, and zero leakage sealing and permanent seal are able to achieve during working condition or draping, have the advantages that it is easy to operate, using safe, labor intensity is low etc..
Description
Technical field
The invention belongs to the extruder equipment technology fields of plastic processing industry, are more specifically a kind of polystyrene dioxies
Change carbon extrusion foaming with not shutting down net exchanging device.The present invention is applicable in the production of any plastic products in addition to thermal sensitivity or thermosetting property,
Especially be used for XPS(polystyrene carbon dioxide extrusion foaming plate), the production of KT plate and other extrusion plastic products.
Background technique
Extruder is plastic processing industry one of the most common type plastic products process equipment, can be used to produce to make as squeezed out
Hundreds of plastic product such as grain, extrusion foaming, extruding pipe material.It is miscellaneous in impurity, especially reclaimed materials due to containing in plastic raw materials
Matter content is higher, so being both provided with the filter device for impurity screening in the front of extruder.When filter screen uses one section
Between after, impurity is usually adhered to screen surface and substantially reduces filter effect, then just needs to be replaced frequently new filtering
Net.Some filter devices are simple, only need to shut down extruder, dismantle junction, change dirty strainer.But some plastic products squeeze out life
Producing line is longer, and cutting off whole production line, to change filter screen waste surprising, because this intermediate loss generated is very big: have material loss,
Power loss, artificial loss and waster loss etc., such as XPS(extrusion molding produce foamed polystyrene board), polyethylene drainage
Pipeline and biaxial tension product etc..Market is having because there is limitation in when limitation use of structure there are many planting net-changing device, has
It is that flow and pressure oscillation cause greatly very much when can not achieve online draping (not shutting down draping namely) or online draping
Production is discontinuous (this is as the result for shutting down draping), or manufacturing technique requirent is not achieved and leaks seriously, either
There is security risk etc. in operation.And traditional net-changing device mostly uses mechanical rigid to seal, i.e., and the hard of steel to steel rubs
Clearance seal is wiped, gap is too small or too mostly improper and is not easy to hold, and gap is too small then can be stuck between web plate and sliding slot,
The too big then material leakage of gap seriously can not be produced normally, along with the influence of the factors such as high temperature and long stroke causes hard friction gap cannot
Persistently, sealing surface is worn or pulls soon material leakage.Therefore, how to realize and more save, is faster, safer, more environmentally friendly
Filter screen is replaced, for a long time always one of the project of plastics machinery industry research.
More specifically, Chinese patent ZL200620135316.2 disclose by the applicant's invention " a kind of protected against explosion squeezes
Machine does not shut down net exchanging device out ".The device is mainly used in extrusion molding production foamed polystyrene board (XPS) production, it connects
It connects integrated net block and solves independent net block using security issues, also solve explosion of the common one-board net-changing device in draping
Product discontinuity caused by sound and draping.But the requirement with country to atmosphere and environmental protection improves, and tradition is with high pollution
It is being phased out with the freon and coal gas of safety difference as the XPS production technology of foaming agent, carbon dioxide is increasingly becoming XPS
The upgrading replacement of the mainstream of foaming agent, foaming agent then needs that original XPS production technology is adjusted correspondingly and is changed, especially
It is to improve 30%~50% as system fusion pressure after XPS foaming agent using carbon dioxide, this proposes replacement strainer higher
It is required that.Under current XPS production specifications, if directly by Patent No. ZL200620135316.2, entitled " one kind
Explosion-proof extruder does not shut down net exchanging device " using in carbon dioxide process extrusion molding production foamed polystyrene board production line
It has the following disadvantages: 1, it is troublesome in poeration, it needs manually to load and unload back and forth by the net block of high temperature, easily causes personnel's scald and net block
Fall damage.2, mechanical rigid seals, poor sealing effect, easily leaks.3, carbon dioxide process extrusion molding production polystyrene hair
It needs carbon dioxide foaming agent to beat before net-changing device when steeping plate, because the structure does not have independent sealing system, by pure
High-pressure carbon dioxide gas (pressure reaches 25~30MPa) is can't stop in broken mechanical seal, serious leak occurs, influences foaming effect
Fruit, or even cannot normally produce.
Summary of the invention
The purpose of the present invention is exactly the shortcoming being directed in the presence of the above-mentioned prior art and provides a kind of polystyrene
Carbon dioxide extrusion foaming is not with shutting down net exchanging device.The present invention conveniently and efficiently realize do not shut down draping, guarantee it is normal continuous
Production, and is able to achieve zero leakage sealing and permanent seal during working condition or draping, air tight, not material leakage, this
Invention also have the advantages that it is easy to operate, using safe, labor intensity is low etc..
The purpose of the present invention can be realized by following technique measures:
A kind of polystyrene carbon dioxide extrusion foaming of the invention with do not shut down net exchanging device include by rectangular parallelepiped structure into
Oralia matrix and exit plate matrix include two through-hole sliding slots and two to the three filler strip two sides being equidistantly spaced from formation are clipped in
The net exchanging device main body of filtration channel, one end is inserted into respectively in corresponding through-hole sliding slot, the other end and corresponding oil cylinder cylinder rod
(there are two slide type filter element, two slide type filter elements for present invention setting for two slide type filter elements being connected
It is inserted into two through-hole sliding slots in net exchanging device main body respectively, after inserting in place, the filter in two slide type filter elements
Web area is in two corresponding filtration channels.It is two filtration channels, two slide type filterings when normal filtration works
Unit filters simultaneously.It is single filtration channel, single slide type mistake when the filter net jam in slide type filter element needs to change
Filter unit is filtered, and is fast moved the slide type filter element to draping to draping position by the effect of oil cylinder, is removed dirty
Strainer, install clean strainer and be moved back to operating position.Repetitive operation can change another slide type filter element
Net operation)；The slide type filter element includes filter element parent plate, is inlaid in the porous of filter element parent plate filter end
(strainer and porous plate are stacked are inlaid in filter element parent plate up and down the strainer of plate and bedding in one end face of porous plate, insert
In filtration channel the peace of strainer and porous plate can be on the one hand used as with the impurity in filtering plastic melt, filter element parent plate
Dress basis, on the other hand, filter element parent plate can be with electric filter and porous plate in filterer under the push-and-pull action of oil cylinder
Make to switch between position and external draping position)；Positioned at the upper and lower end face of the filter element parent plate outer rim of strainer periphery
It is closely pasted with the stationary seal ring for being inlaid in the rotary packing ring of inlet plate matrix lower end surface, being inlaid in exit plate matrix upper surface respectively
It closes, while embedded with several adjustment springs, (rotary packing ring and stationary seal ring were fitted tightly in the upper surface of rotary packing ring
Filter unit parent plate upper and lower side constitutes mechanical flexibility sealing, then cooperates the squeezing action of adjustment spring, after assembly sealing surface it
Between there is no nature gap, fit together completely, filter element is sealed using pressure of plastic melt itself, between not cooperating
Gap, air tight, not material leakage realize zero leakage sealing；Can slidably reciprocate filter element during draping freely,
And it can be compensated automatically after wearing.In this way the present invention be able to achieve during working condition or draping zero leakage sealing and persistently
Sealing, air tight, not material leakage, it is easy to operate, using safe, the service life is long), and the upper surface of rotary packing ring and inlet plate matrix
Faying face between there are spring-compressed gap, (this spring-compressed gap is typically designed as 1.5mm or so, the effect of adjustment spring
It is to maintain the gap of 1.5mm and elastic force is allowed to act on rotary packing ring, the other end of rotary packing ring is allowed to filter completely with slide type
Gapless fitting is realized between the faying face of unit.When the high-pressure plastic melt containing carbon dioxide foaming agent passes through, moment
Full of sprue and gap, according to fluidics principle, theoretically all melt fusion pressures of entrance are of substantially equal.Rotary packing ring
The area of both ends of the surface be also it is equal, fusion pressure is first full of the gap of 1.5mm, and the thrust of generation is on rotary packing ring, then leads to
It crosses rotary packing ring to be transmitted to on the faying face of slide type filter element, in the case where sealing force is equal, the faying face never may be used
Can there are pressurized melt or carbon dioxide foaming agent to leak out)；The filtration channel is divided into channel feed zone, Channel filtration section, channel
Discharging section, channel feed zone are arranged in inlet plate matrix, and channel discharging section is arranged in exit plate matrix, Channel filtration section cloth
It sets in filter element parent plate, strainer and porous plate are inserted into Channel filtration section, and strainer is connected with channel feed zone, porous
The outlet end of plate is connected with channel discharging section, and (when normal filtration work, strainer and porous plate are completely in filtration channel；
When needing replacing new strainer, oil cylinder provides powered slide type filter element to draping position, draws again after replacement
Dynamic slide type filter element returns to the operating position in filtration channel).
Heretofore described Channel filtration section includes opening up from top to bottom along the thickness direction of filter element parent plate
Import slot, strainer slot, porous plate mounting hole, exit slots of the coaxial line in stepped hole shape arrangement, import slot and outlet
The diameter of slot be all larger than the diameter of porous plate mounting hole, be respectively less than strainer slot diameter (strainer slot for being embedded in strainer,
For being embedded in porous plate, the purpose that import slot and exit slots is arranged is porous plate mounting hole: convenient for loading and unloading when needing draping
Strainer and as filtering before with filtered plastic melt channel, porous plate not with contact friction below exit plate matrix；Into
The diameter of mouth slot and exit slots is all larger than the diameter of porous plate mounting hole, convenient for the installation of porous plate；Import slot and go out
The diameter of mouth slot is less than the diameter of strainer slot, convenient for the fixation of strainer).
Heretofore described channel feed zone includes being opened up from top to bottom along the thickness direction of inlet plate matrix in people
The import sprue of font three-port structure and two import runners, two import transition runners, two be provided with inlet plate base
The rotary packing ring mounting groove of body lower end surface, the diameter and depth of rotary packing ring mounting groove respectively with the outer diameter of rotary packing ring and height
Match (when normal filtration work, in the import sprue and two import runners of herringbone three-port structure, successively
Two channel feed zones are constituted after being connected to two import transition runners, two rotary packing ring mounting grooves.In normal work,
Plastic melt containing impurity enters from import sprue, is diverted in two import runners, then passes through import transition
The inner cavity for the rotary packing ring installed in runner, rotary packing ring mounting groove subsequently enters two Channel filtration sections.When a slide plate
During formula filter element removes draping, only filtration channel work, an another filtration channel are trapped).
Heretofore described channel discharging section includes being opened up from bottom to top along the thickness direction of exit plate matrix in people
The outlet sprue of font three-port structure and two outlet manifold roads, two outlet transition runners, two be provided with exit plate base
The stationary seal ring mounting groove of body lower end surface, the diameter and depth of stationary seal ring mounting groove respectively with the outer diameter of stationary seal ring and height
Degree match (when normal filtration work, in the one outlet sprue of herringbone three-port structure and two outlet manifold roads, according to
It is secondary be connected to two outlet transition runners, two stationary seal ring mounting grooves after constitute two channel discharging sections.It is working normally
When, enter in the stationary seal ring installed in stationary seal ring mounting groove after impurity screening from the plastic melt that porous plate is discharged
Chamber, then followed by outlet transition runner, outlet manifold road, then two strands of melts are flowed to outlet sprue, finally enter outer
Portion's pipeline.During a slide type filter element removes draping, only filtration channel work, an another filtration channel
It is trapped).
Heretofore described oil cylinder is fixed on support seat board, and the support seat board passes through three double end positioning screw difference
It is fixed on the correspondence side (mounting bracket of oil cylinder is constituted by support seat board and double end positioning screw) of three filler strips.
The upper surface of the rotary packing ring offers several for being embedded in the blind hole of adjustment spring in the present invention.
Heretofore described rotary packing ring mounting groove and stationary seal ring mounting groove are cylinder cavity configuration, the import transition
Runner and outlet transition runner are circular cone cavity configuration；For the strainer in the moving process for being detached from Channel filtration section, filtering is single
The upper and lower surface of first parent plate gradually blocks filtration channel section and is in auxiliary seal state, corresponding auxiliary during closure
The length of sealing chute plane be greater than or equal to the outer edge of strainer diameter, that is, rotary packing ring One-sided Widths and rotary packing ring into
Right side edge sum of the distance (the first embodiment of the invention, rotary packing ring mounting groove and the stationary seal ring installation of oralia matrix
The structure of slot is relatively easy, easy to process).
Heretofore described rotary packing ring mounting groove and stationary seal ring mounting groove are non-fully cylinder cavity configuration, import
It crosses runner and outlet transition runner is non-fully circular cone cavity configuration, in import transition runner and rotary packing ring mounting groove section
Remaining one piece of sealed island I for not being processed in island shape and being extended by inlet plate matrix through-thickness, pacifies in stationary seal ring
One piece is remained in tankage and outlet transition runner section not to be processed and prolonged by exit plate matrix through-thickness in island shape
The cross section of the sealed island II stretched, sealed island I and sealed island II be two sections intersect it is arc-shaped at eye-shaped entity structure, wherein
Central axis of one circular arc Jing Guo Channel filtration section；For the strainer in the moving process for being detached from Channel filtration section, filtering is single
The upper and lower surface of first parent plate gradually blocks filtration channel section and is in auxiliary seal state, corresponding auxiliary during closure
The length of sealing chute plane is more than or equal to strainer diameter, that is, sealed island width and rotary packing ring One-sided Widths and rotary packing ring
Outer edge to the right side edge sum of the distance of inlet plate matrix, (second of embodiment of the invention, is arranged in example 2
Have the length that auxiliary seal slideway plane can be effectively reduced after sealed island I and sealed island II, substantially reduce draping it is mobile when
Between and stroke, also just there is no melts and foamed gas to overflow for moment mobile draping；Slide type filter element is also reduced simultaneously
Length improves the machining accuracy of slide type filter element, reduces the deflection in use process, prolongs the service life).
Design principle of the invention is as follows:
There are two slide type filter elements for present invention setting, are inserted into two through-hole sliding slots in net exchanging device main body respectively,
After inserting in place, strainer is in filtration channel.When normal filtration works, two filtration channels and two slide type filter elements
It works at the same time.When needing to change strainer, another slide type filter screen unit and filtration channel work on, and the slide type to draping is filtered
Net unit is moved out to draping position, simultaneously closes off corresponding filtration channel under oil cylinder effect, dirty strainer to be removed, install it is clean
Operating position is moved back into after strainer.Strainer in another interchangeable slide type filter screen unit of repetitive operation.In this way, the present invention is convenient
It quickly realizes and does not shut down draping, guarantees normal continuous production.Simultaneously as rotary packing ring and stationary seal ring were fitted tightly over
Filter unit parent plate upper and lower side constitutes mechanical flexibility sealing, then cooperates the squeezing action of adjustment spring, after assembly sealing surface it
Between there is no nature gap, fit together completely, filter element is sealed using pressure of plastic melt itself, between not cooperating
Gap, air tight, not material leakage realize zero leakage sealing；Can slidably reciprocate filter element during draping freely,
And it can be compensated automatically after wearing.In this way the present invention be able to achieve during working condition or draping zero leakage sealing and persistently
Sealing.In addition, the slide type filter element in the present invention is monolithic construction, when draping, only needs to push away slide type filter element
Draping position is arrived out to change clean new strainer and then be withdrawn into operating position, is not needed manually to dismount net block, not needed
The filter element of human contact's high temperature, it is easy to operate, be greatly reduced using safe, labor intensity.
Advantageous effects of the invention are as follows:
The present invention is a kind of polystyrene carbon dioxide extrusion foaming with not shutting down net exchanging device.The present invention conveniently and efficiently realizes
Draping is not shut down, guarantees normal continuous production, and is able to achieve zero leakage sealing during working condition or draping and is held
Sealing long, air tight, not material leakage, the present invention also have the advantages that it is easy to operate, using safe, labor intensity is low etc..
Detailed description of the invention
Fig. 1 is top view of the embodiment of the present invention one in two filter elements filtration simultaneously.
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Fig. 3 is the B-B cross-sectional view of Fig. 1.
Fig. 4 is top view of the embodiment of the present invention one in a wherein filter element draping.
Fig. 5 is the A '-A ' cross-sectional view of Fig. 4.
Fig. 6 is the B '-B ' cross-sectional view of Fig. 4.
Fig. 7 is top view of the embodiment of the present invention two in two filter elements filtration simultaneously.
Fig. 8 is the C-C cross-sectional view of Fig. 7.
Fig. 9 is the D-D cross-sectional view of Fig. 7.
Figure 10 is top view of the embodiment of the present invention two in a wherein filter element draping.
Figure 11 is the C '-C ' cross-sectional view of Figure 10.
Figure 12 is the D '-D ' cross-sectional view of Figure 10.
Number explanation in figure: 1, inlet plate matrix, 1-1, import sprue, 1-2, import runner, 1-3, import transition
Runner, 1-4, rotary packing ring mounting groove, 2, filler strip, 3, exit plate matrix, 3-1, outlet sprue, 3-2, outlet manifold road, 3-
3, outlet transition runner, 3-4, stationary seal ring mounting groove, 4, through-hole sliding slot, 5, oil cylinder, 6, slide type filter element, 6-1, filtering
Unit parent plate, 6-1-1, import slot, 6-1-2, strainer slot, 6-1-3, porous plate mounting hole, 6-1-4, exit slots, 6-
2, porous plate, 6-3, strainer, 7, adjustment spring, 8, rotary packing ring, 8-1, blind hole, 9, stationary seal ring, 10, support seat board, 11, double
Head positioning screw, 12-1, sealed island I, 12-2, sealed island II.
Specific embodiment
The present invention is divided into two embodiments below with reference to attached drawing to be further described:
Embodiment one
As shown in Fig. 1~Fig. 6, a kind of polystyrene carbon dioxide extrusion foaming of embodiment one includes with not shutting down net exchanging device
By the inlet plate matrix (1) and exit plate matrix (3) of rectangular parallelepiped structure to being clipped in three filler strip being equidistantly spaced from (2) two sides shapes
At the net exchanging device main body for including two through-hole sliding slots (4) and two filtration channels, it is sliding that one end is inserted into corresponding through-hole respectively
(present invention is provided with two to two slide type filter elements (6) that slot (4) is interior, the other end is connected with corresponding oil cylinder (5) cylinder rod
A slide type filter element (6), it is sliding that two slide type filter elements (6) are inserted into two through-holes in net exchanging device main body respectively
In slot (4), after inserting in place, the screen area in two slide type filter elements (6) is in two corresponding filtration channels
In.When normal filtration works, it is two filtration channels, two slide type filter elements while filters.When slide type filter element
(6) strainer (6-3) blocking in is when needing to change, and is that single filtration channel, single slide type filter element are filtered, passes through oil
The effect of cylinder (5) fast moves the slide type filter element (6) to draping to draping position, removes dirty strainer (6-3), changes the outfit
Upper clean strainer is moved back to operating position.Repetitive operation can carry out draping operation to another slide type filter element (6))；
The slide type filter element (6) includes filter element parent plate (6-1), is inlaid in filter element parent plate (6-1) filter end
Strainer (6-3) in porous plate (6-2) end face of porous plate (6-2) and bedding (strainer (6-3) and porous plate (6-2) are up and down
Stacked to be inlaid in filter element parent plate (6-1), being inserted into filtration channel can be filtered with the impurity in filtering plastic melt
Unit parent plate (6-1) the on the one hand installation foundation as strainer (6-3) and porous plate (6-2), on the other hand, in oil cylinder (5)
Push-and-pull action under filter element parent plate (6-1) can with electric filter (6-3) and porous plate (6-2) in filtration position and
It is switched between external draping position)；Positioned at the upper and lower end of filter element parent plate (6-1) outer rim of the periphery strainer (6-3)
Face respectively be inlaid in the rotary packing ring (8) of inlet plate matrix (1) lower end surface, be inlaid in the quiet of exit plate matrix (3) upper surface
Sealing ring (9) fits closely, while being embedded with several adjustment spring (7) (rotary packing rings in the upper surface of rotary packing ring (8)
(8) it is fitted tightly over filter element parent plate (6-1) upper and lower side with stationary seal ring (9) and constitutes mechanical flexibility sealing, then cooperate
The squeezing action of adjustment spring (7) does not have nature gap between sealing surface after assembly, fits together completely, molten using plastics
Pressure of body itself seals filter element, and without fit clearance, air tight, not material leakage realizes zero leakage sealing；Even if
Filter element can also slidably reciprocate freely and can compensate automatically after wearing during draping.The present invention is in work shape in this way
It is able to achieve zero leakage sealing and permanent seal during state or draping, air tight, not material leakage is easy to operate, use the safe, longevity
Life length), and there are spring-compressed gap (this bullets between the upper surface of rotary packing ring (8) and the faying face of inlet plate matrix (1)
Spring compression clearance is typically designed as 1.5mm or so, and the effect of adjustment spring (7) is to maintain the gap of 1.5mm and elastic force is allowed to act on
In rotary packing ring (8), the other end of rotary packing ring (8) is allowed to realize between the faying face of slide type filter element (6) completely
Gapless fitting.When the high-pressure plastic melt containing carbon dioxide foaming agent passes through, moment is full of sprue and gap, root
According to fluidics principle, theoretically all melt fusion pressures of entrance are of substantially equal.The area of rotary packing ring (8) both ends of the surface is also phase
Deng, fusion pressure is first full of the gap of 1.5mm, and the thrust of generation is passed on rotary packing ring (8), then by rotary packing ring (8)
It is delivered to on the faying face of slide type filter element (6), in the case where sealing force is equal, the faying face must not have high pressure
Melt or carbon dioxide foaming agent leak out)；The filtration channel is divided into channel feed zone, Channel filtration section, channel discharging section, leads to
Road feed zone is arranged in inlet plate matrix (1), and channel discharging section is arranged in exit plate matrix (3), Channel filtration section arrangement
In the filter element parent plate (6-1), strainer (6-3) and porous plate (6-2) are inserted into Channel filtration section, strainer (6-3) with lead to
Road feed zone is connected, the outlet end of porous plate (6-2) be connected with channel discharging section (when normal filtration work when, strainer (6-
3) it is completely in filtration channel with porous plate (6-2)；When needing replacing new strainer (6-3), oil cylinder (5) provides power and pushes away
Dynamic slide type filter element (6) arrive draping position, and slide type filter element (6) is pulled to return in filtration channel after replacement again
Operating position).
Channel filtration section described in embodiment one include along filter element parent plate (6-1) thickness direction from top to bottom
Import slot (6-1-1), strainer slot (6-1-2), porous plate mounting hole (6-1- of the coaxial line opened up in stepped hole shape arrangement
3) diameter of, exit slots (6-1-4), import slot (6-1-1) and exit slots (6-1-4) is all larger than porous plate mounting hole
The diameter of (6-1-3), being respectively less than the diameter of strainer slot (6-1-2), (strainer slot (6-1-2) is more for being embedded in strainer (6-3)
The mesh of import slot (6-1-1) and exit slots (6-1-4) is arranged for being embedded in porous plate (6-2) in orifice plate mounting hole (6-1-3)
: when needing draping, strainer (6-3) convenient for loading and unloading and as filtering before with filtered plastic melt channel, porous plate (6-
2) friction is not contacted with below exit plate matrix (3)；The diameter of import slot (6-1-1) and exit slots (6-1-4) is big
In the diameter of porous plate mounting hole (6-1-3), it is convenient for the installation of porous plate (6-2)；Import slot (6-1-1) and exit slots
The diameter of (6-1-4) is less than the diameter of strainer slot (6-1-2), is convenient for the fixation of strainer (6-3)).
Channel feed zone described in embodiment one includes opening up from top to bottom along the thickness direction of inlet plate matrix (1)
In the import sprue (1-1) of herringbone three-port structure and two import runners (1-2), two import transition runners (1-3),
Two are provided with the rotary packing ring mounting groove (1-4) of inlet plate matrix (1) lower end surface, the diameter of rotary packing ring mounting groove (1-4)
Match respectively with the outer diameter of rotary packing ring (8) and height (when normal filtration works, in herringbone three-port structure with depth
One import sprue (1-1) and two import runners (1-2) are successively moved with two import transition runners (1-3), two close
Two channel feed zones are constituted after seal ring mounting groove (1-4) connection.In normal work, the plastic melt containing impurity from into
Mouth sprue (1-1) enters, and is diverted in two import runners (1-2), then passes through import transition runner (1-3), moves
The inner cavity for the rotary packing ring (8) installed in sealing ring mounting groove (1-4) subsequently enters two Channel filtration sections.When a cunning
During plate-type filtering unit (6) removes draping, only filtration channel work, an another filtration channel are trapped).
Channel discharging section described in embodiment one includes opening up from bottom to top along the thickness direction of exit plate matrix (3)
In the outlet sprue (3-1) of herringbone three-port structure and two outlet manifold roads (3-2), two outlet transition runners (3-3),
Two are provided with the stationary seal ring mounting groove (3-4) of exit plate matrix (3) lower end surface, stationary seal ring mounting groove (3-4) it is straight
It (is in herringbone three-port structure when normal filtration works that diameter and depth match with the outer diameter of stationary seal ring (9) and height respectively
One outlet sprue (3-1) and two outlet manifold roads (3-2), successively with two outlet transition runners (3-3), two it is quiet
Two channel discharging sections are constituted after sealing ring mounting groove (3-4) connection.In normal work, from porous plate after impurity screening
The plastic melt of (6-2) discharge enters the inner cavity for the stationary seal ring (9) installed in stationary seal ring mounting groove (3-4), then successively
Outlet transition runner (3-3), outlet manifold road (3-2) are flowed through, then two strands of melts are flowed to outlet sprue (3-1), finally
Into external discharge nozzle.During a slide type filter element (6) removes draping, only a filtration channel works, is another
One filtration channel is trapped).
Oil cylinder described in embodiment one (5) is fixed in support seat board (10), and the support seat board (10) is double by three
Head positioning screw (11) is separately fixed at the correspondence side of three filler strips (2) (by support seat board (10) and double end positioning screw
(11) mounting bracket of oil cylinder (5) is constituted).
The upper surface of the rotary packing ring (8) offers several for being embedded in adjustment spring (7) in example 1
Blind hole (8-1).
Rotary packing ring mounting groove (1-4) described in embodiment one and stationary seal ring mounting groove (3-4) are cylinder cavity configuration,
The import transition runner (1-3) and outlet transition runner (3-3) are circular cone cavity configuration；The strainer (6-3) is logical in disengaging
In the moving process of road fillter section, the upper and lower surface of filter element parent plate (6-1) gradually blocks filtration channel section and is in
Auxiliary seal state, the length of corresponding auxiliary seal slideway plane is more than or equal to strainer (6-3) diameter during closure
That is right side edge sum of the distance of the outer edge of rotary packing ring (8) One-sided Widths and rotary packing ring (8) to inlet plate matrix (1)
(structure of the first embodiment of the invention, rotary packing ring mounting groove (1-4) and stationary seal ring mounting groove (3-4) is relatively easy,
It is easy to process).
Embodiment two
Embodiment two and implement one the difference is that: be provided with sealed island I (12-1), sealed island II in example 2
(12-2), and be first not provided in embodiment.More specifically, rotary packing ring mounting groove (1-4) described in embodiment two and quiet
Sealing ring mounting groove (3-4) is that non-fully cylinder cavity configuration, import transition runner (1-3) and outlet transition runner (3-3) are equal
For non-fully circular cone cavity configuration, one piece is remained in import transition runner (1-3) and the section rotary packing ring mounting groove (1-4) in orphan
The sealed island I (12-1) that island is not processed and is extended by inlet plate matrix (1) through-thickness is installed in stationary seal ring
One piece is remained in slot (3-4) and the section outlet transition runner (3-3) not to be processed and in island shape by exit plate matrix (3)
The cross section of the sealed island II (12-2) that through-thickness extends, sealed island I (12-1) and sealed island II (12-2) is two sections of friendships
The eye-shaped entity structure that circular arc is formed is pitched, wherein central axis of the circular arc Jing Guo Channel filtration section；The strainer (6-3)
In the moving process for being detached from Channel filtration section, the upper and lower surface of filter element parent plate (6-1) gradually blocks filtration channel and cuts
Face and be in auxiliary seal state, during closure the length of corresponding auxiliary seal slideway plane be more than or equal to strainer (6-3)
The width of diameter, that is, sealed island (12-1) and the outer edge of rotary packing ring (8) One-sided Widths and rotary packing ring (8) to inlet plate base
(second of embodiment of the invention is provided with sealed island I (12-1) to the right side edge sum of the distance of body (1) in example 2
With the length that auxiliary seal slideway plane can be effectively reduced after sealed island II (12-2), substantially reduce draping traveling time and
Stroke, also just there is no melts and foamed gas to overflow for moment mobile draping；The length of slide type filter element (6) is also reduced simultaneously
Degree improves the machining accuracy of slide type filter element (6), reduces the deflection in use process, prolongs the service life).
Particular condition in use of the invention is as follows:
Firstly, assembling each components of the invention according to above structure description, two slide type filter elements (6) are inserted respectively
In two through-hole sliding slots in net exchanging device main body, strainer is in filtration channel after inserting in place.Then, by import master
Runner (1-1) is docked and connected with external feed pipe, and outlet sprue (3-1) and external discharge nozzle are docked and connected.
When normal filtration works for the first time, the valve for controlling external feed pipe is opened, the plastic melt containing impurity is from outside
Feed pipe enters in the import sprue (1-1) in the present invention, is diverted to two import runners along herringbone three-port structure
In (1-2), two strands of melts respectively followed by the inner cavity of import transition runner (1-3), rotary packing ring (8), subsequently enter logical again
Road fillter section is filtered: the free from admixture plastic melt after flowing through strainer (6-3) enters along the hole in porous plate (6-2)
The inner cavity of stationary seal ring (9), and successively enter outlet manifold road (3-2) along outlet transition runner (3-3), two outlet manifolds
Two strands of plastic melts in road (3-2) are flowed to outlet sprue (3-1), finally enter external discharge nozzle.
When strainer (6-3) blocking needs to change, another slide type filter screen unit (6) and filtration channel work on, to
The slide type filter screen unit (6) of draping is moved out to draping position in the case where oil cylinder (5) act on, simultaneously closes off corresponding filtration channel, to
Remove dirty strainer (6-3), install clean strainer (6-3) after be moved back into operating position.Another interchangeable cunning of repetitive operation
Strainer (6-3) in board-like filter screen unit (6).In this way, the present invention conveniently and efficiently realize do not shut down draping, guarantee it is normal continuous
Production.
Simultaneously when normal filtration works or replaces strainer (6-3), since rotary packing ring (8) and stationary seal ring (9) are close
It is fitted in filter element parent plate (6-1) upper and lower side and constitutes mechanical flexibility sealing, then the extruding of adjustment spring (7) is cooperated to make
With there is no nature gap between sealing surface after assembly, fit together completely, sealed using pressure of plastic melt itself
Unit is filtered, without fit clearance, air tight, not material leakage realizes zero leakage sealing；The filter element even if during draping
It can slidably reciprocate freely and can be compensated automatically after wearing.The present invention can be real during working condition or draping in this way
Existing zero leakage sealing and permanent seal.
Slide type filter element in the present invention is monolithic construction, and when draping only needs to release slide type filter element
Clean new strainer is changed to draping position and then is withdrawn into operating position, is not needed manually to dismount net block, is not required to very important person
The filter element of member's contact high temperature, structure is simple and convenient to operate, using it is safe, substantially reduce labor intensity.Reality in the present invention
Apply example one, rotary packing ring mounting groove (1-4) and stationary seal ring mounting groove (3-4) are cylinder cavity configuration, and structure is relatively easy, just
In processing.Implementation two in the present invention is additionally arranged sealed island I (12-1) and sealed island II, and it is sliding can to effectively reduce auxiliary seal
The length of road plane substantially reduces draping traveling time and stroke, and also just there is no melt and foaming gas for moment mobile draping
Body overflows, and also reduces the length of slide type filter element (6), improves the machining accuracy of slide type filter element (6), reduces and uses
Deflection in the process prolongs the service life.
Claims (8)
1. a kind of polystyrene carbon dioxide extrusion foaming is not with shutting down net exchanging device, it is characterised in that: it includes by cuboid
The inlet plate matrix (1) and exit plate matrix (3) of structure include two to three filler strip being equidistantly spaced from (2) two sides formation are clipped in
The net exchanging device main body of a through-hole sliding slot (4) and two filtration channels, one end is inserted into respectively in corresponding through-hole sliding slot (4),
Two slide type filter elements (6) that the other end is connected with corresponding oil cylinder (5) cylinder rod；The slide type filter element (6)
Including filter element parent plate (6-1), it is inlaid in the porous plate (6-2) of filter element parent plate (6-1) filter end and bedding exists
The strainer (6-3) of porous plate (6-2) end face；Positioned at the periphery strainer (6-3) filter element parent plate (6-1) outer rim it is upper,
Lower end surface respectively be inlaid in the rotary packing ring (8) of inlet plate matrix (1) lower end surface, be inlaid in exit plate matrix (3) upper surface
Stationary seal ring (9) fit closely, while the upper surface of rotary packing ring (8) be embedded with several adjustment springs (7), Er Qiedong
There are spring-compressed gaps between the upper surface of sealing ring (8) and the faying face of inlet plate matrix (1)；The filtration channel is divided into
Channel feed zone, Channel filtration section, channel discharging section, channel feed zone are arranged in inlet plate matrix (1), channel discharging section cloth
It sets in exit plate matrix (3), Channel filtration section is arranged in filter element parent plate (6-1), strainer (6-3) and porous plate
(6-2) is inserted into Channel filtration section, and strainer (6-3) is connected with channel feed zone, and the outlet end of porous plate (6-2) goes out with channel
Material section is connected.
2. a kind of polystyrene carbon dioxide extrusion foaming according to claim 1 is not with shutting down net exchanging device, feature
Be: the Channel filtration section includes the coaxial line opened up from top to bottom along the thickness direction of filter element parent plate (6-1)
In the import slot (6-1-1) of stepped hole shape arrangement, strainer slot (6-1-2), porous plate mounting hole (6-1-3), exit slots
The diameter of (6-1-4), import slot (6-1-1) and exit slots (6-1-4) is all larger than the straight of porous plate mounting hole (6-1-3)
Diameter, the diameter for being respectively less than strainer slot (6-1-2).
3. a kind of polystyrene carbon dioxide extrusion foaming is not with shutting down net exchanging device according to claim 1, it is characterised in that: institute
State channel feed zone include open up from top to bottom along the thickness direction of inlet plate matrix (1) in herringbone three-port structure into
Mouthful sprue (1-1) and two import runners (1-2), two import transition runners (1-3), two be provided with inlet plate matrix
(1) the rotary packing ring mounting groove (1-4) of lower end surface, the diameter and depth of rotary packing ring mounting groove (1-4) respectively with rotary packing ring
(8) outer diameter and height matches.
4. a kind of polystyrene carbon dioxide extrusion foaming is not with shutting down net exchanging device according to claim 1, it is characterised in that: institute
Stating channel discharging section includes the going out in herringbone three-port structure opened up from bottom to top along the thickness direction of exit plate matrix (3)
Mouthful sprue (3-1) and two outlet manifold roads (3-2), two outlet transition runners (3-3), two be provided with exit plate matrix
(3) the stationary seal ring mounting groove (3-4) of lower end surface, the diameter and depth of stationary seal ring mounting groove (3-4) respectively with static seal
The outer diameter and height of ring (9) match.
5. a kind of polystyrene carbon dioxide extrusion foaming according to claim 1 is not with shutting down net exchanging device, feature
Be: the oil cylinder (5) is fixed in support seat board (10), and the support seat board (10) passes through three double end positioning screws (11)
It is separately fixed at the correspondence side of three filler strips (2).
6. a kind of polystyrene carbon dioxide extrusion foaming according to claim 1 is not with shutting down net exchanging device, feature
It is: offers several for being embedded in the blind hole (8-1) of adjustment spring (7) in the upper surface of the rotary packing ring (8).
7. a kind of polystyrene carbon dioxide extrusion foaming according to claim 3 or 4 is not with shutting down net exchanging device, special
Sign is: the rotary packing ring mounting groove (1-4) and stationary seal ring mounting groove (3-4) are cylinder cavity configuration, the import
Crossing runner (1-3) and outlet transition runner (3-3) is circular cone cavity configuration；The strainer (6-3) is being detached from Channel filtration section
In moving process, the upper and lower surface of filter element parent plate (6-1) gradually blocks filtration channel section and is in auxiliary seal shape
State, the length of corresponding auxiliary seal slideway plane is greater than or equal to strainer (6-3) diameter, that is, rotary packing ring (8) during closure
Right side edge sum of the distance of the outer edge of One-sided Widths and rotary packing ring (8) to inlet plate matrix (1).
8. a kind of polystyrene carbon dioxide extrusion foaming according to claim 3 or 4 is not with shutting down net exchanging device, special
Sign is: the rotary packing ring mounting groove (1-4) and stationary seal ring mounting groove (3-4) are non-fully cylinder cavity configuration, import
Transition runner (1-3) and outlet transition runner (3-3) are non-fully circular cone cavity configuration；In import transition runner (1-3) and move
One piece is remained in the section sealing ring mounting groove (1-4) not to be processed and in island shape by inlet plate matrix (1) through-thickness
Two sealed islands I (12-1) extended remain one in stationary seal ring mounting groove (3-4) and the section outlet transition runner (3-3)
Two sealed islands II (12-2) that block is not processed in island shape and is extended by exit plate matrix (3) through-thickness, sealing
Island I (12-1) and the cross section of sealed island II (12-2) be two sections intersect it is arc-shaped at eye-shaped entity structure, wherein one
Central axis of the circular arc Jing Guo Channel filtration section；For the strainer (6-3) in the moving process for being detached from Channel filtration section, filtering is single
The upper and lower surface of first parent plate (6-1) gradually blocks filtration channel section in auxiliary seal state, corresponds to during blocking
Auxiliary seal slideway plane length be more than or equal to strainer (6-3) diameter, that is, sealed island (12-1) width and rotary packing ring
(8) right side edge sum of the distance of the outer edge of One-sided Widths and rotary packing ring (8) to inlet plate matrix (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910845011.2A CN110421821A (en) | 2019-09-07 | 2019-09-07 | A kind of polystyrene carbon dioxide extrusion foaming is not with shutting down net exchanging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910845011.2A CN110421821A (en) | 2019-09-07 | 2019-09-07 | A kind of polystyrene carbon dioxide extrusion foaming is not with shutting down net exchanging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110421821A true CN110421821A (en) | 2019-11-08 |
Family
ID=68417878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910845011.2A Pending CN110421821A (en) | 2019-09-07 | 2019-09-07 | A kind of polystyrene carbon dioxide extrusion foaming is not with shutting down net exchanging device |
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| CN (1) | CN110421821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114714594A (en) * | 2022-03-10 | 2022-07-08 | 贺瑞峰 | Double-flow-passage filtering die head and screen structure suitable for reclaimed material production |
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| US4167384A (en) * | 1977-11-28 | 1979-09-11 | The Japan Steel Works, Ltd. | Filter screen exchanging apparatus for plastic extruder |
| CN200988301Y (en) * | 2006-12-31 | 2007-12-12 | 潘应亮 | No-stop machine net changer for anti-explosion extruder |
| US20130087975A1 (en) * | 2011-10-06 | 2013-04-11 | Kolcor Technologies LLC | Sealing Device In A Polymer Filtration Device |
| CN207954573U (en) * | 2018-02-11 | 2018-10-12 | 厦门科艾斯塑胶科技有限公司 | Extruder does not shut down net exchanging device |
| CN209354658U (en) * | 2018-12-07 | 2019-09-06 | 宁波方力密封件有限公司 | A kind of novel sealing component |
| CN210792026U (en) * | 2019-09-07 | 2020-06-19 | 郑州兆明机械有限公司 | Non-stop screen replacing device for polystyrene carbon dioxide extrusion foaming |
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2019
- 2019-09-07 CN CN201910845011.2A patent/CN110421821A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4167384A (en) * | 1977-11-28 | 1979-09-11 | The Japan Steel Works, Ltd. | Filter screen exchanging apparatus for plastic extruder |
| CN200988301Y (en) * | 2006-12-31 | 2007-12-12 | 潘应亮 | No-stop machine net changer for anti-explosion extruder |
| US20130087975A1 (en) * | 2011-10-06 | 2013-04-11 | Kolcor Technologies LLC | Sealing Device In A Polymer Filtration Device |
| CN207954573U (en) * | 2018-02-11 | 2018-10-12 | 厦门科艾斯塑胶科技有限公司 | Extruder does not shut down net exchanging device |
| CN209354658U (en) * | 2018-12-07 | 2019-09-06 | 宁波方力密封件有限公司 | A kind of novel sealing component |
| CN210792026U (en) * | 2019-09-07 | 2020-06-19 | 郑州兆明机械有限公司 | Non-stop screen replacing device for polystyrene carbon dioxide extrusion foaming |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114714594A (en) * | 2022-03-10 | 2022-07-08 | 贺瑞峰 | Double-flow-passage filtering die head and screen structure suitable for reclaimed material production |
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