CN215703876U - Five-layer coextrusion nitrogen-filling method rough-surface geomembrane production equipment - Google Patents
Five-layer coextrusion nitrogen-filling method rough-surface geomembrane production equipment Download PDFInfo
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- CN215703876U CN215703876U CN202121845144.9U CN202121845144U CN215703876U CN 215703876 U CN215703876 U CN 215703876U CN 202121845144 U CN202121845144 U CN 202121845144U CN 215703876 U CN215703876 U CN 215703876U
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Abstract
The utility model relates to production equipment of a five-layer co-extrusion nitrogen-filling rough-surface geomembrane, which comprises three main body layers which are fixedly attached, wherein the outer side surface of the outer main body layer is fixedly attached with a rough surface layer, the production equipment of the five-layer co-extrusion nitrogen-filling rough-surface geomembrane also comprises a film blowing machine head and five spiral extruders, the discharge end of the film blowing machine head is provided with an annular discharge cavity, the film blowing machine head is internally provided with an inner material channel, a secondary inner material channel, a middle material channel, a secondary outer material channel and an outer material channel which are sequentially arranged from inside to outside, the inner material channel, the secondary inner material channel, the middle material channel, the secondary outer material channel and the outer material channel are annular and are communicated with the discharge cavity, the inner material channel, the secondary inner material channel, the middle material channel, the secondary outer material channel and the outer material channel are respectively communicated with the five spiral extruders, and the spiral extruder communicated with the inner material channel and the outer material channel is communicated with an air inlet pipe.
Description
Technical Field
The utility model relates to the field of geomembranes, in particular to a five-layer coextrusion nitrogen-filling rough-surface geomembrane and production equipment.
Background
Geomembranes are widely applied to various fields of engineering construction, such as civil engineering, water conservancy and environmental engineering, but smooth geomembranes have relatively low friction performance, are easy to displace, slide down and dislocate on sloping fields, cause local leakage of seepage-proofing engineering, and cannot ensure the engineering quality. The rough geomembrane can be selected to solve the problems. The existing production modes of the geomembrane with the rough surface comprise a spinning roughening method, a rolling method, a chemical foaming roughening method and the like, and the nitrogen filling roughening method has the advantages that the core layer and the rough surface layer are fully bonded in one step without separation, the production process is relatively simple, in addition, the existing geomembrane adopts a multilayer composite structure more and more, and the strength of the geomembrane can be improved and the production cost can be reduced through the compounding of various materials.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a five-layer coextrusion nitrogen-filling rough-surface geomembrane and production equipment.
The utility model provides a five-layer coextrusion nitrogen-filling rough-surface geomembrane, which is realized by the following technical scheme.
Three-layer main part layer in this scheme can improve the intensity of geomembrane, through setting up different materials, can satisfy different operation requirements, and the matte layer of lateral surface setting plays the frictional effect of increase.
The utility model provides five-layer coextrusion nitrogen-filling method coarse-surface geomembrane production equipment which comprises a film blowing machine head and five spiral extruders, wherein an annular discharge cavity is formed in the discharge end of the film blowing machine head, an inner material channel, a secondary inner material channel, a middle material channel, a secondary outer material channel and an outer material channel are formed in the film blowing machine head from inside to outside, the inner material channel, the secondary inner material channel, the middle material channel, the secondary outer material channel and the outer material channel are all annular and are communicated with the discharge cavity, the inner material channel, the secondary inner material channel, the middle material channel, the secondary outer material channel and the outer material channel are respectively communicated with the five spiral extruders, and an air inlet pipe is communicated with the spiral extruder communicated with the inner material channel and the outer material channel.
Materials are respectively injected into the five material channels through the five screw extruders, nitrogen is injected into the inner material channel and the outer material channel through the air inlet pipe, the materials on two sides are sprayed out, and a rough surface layer is formed on the surface.
Preferably, two inserting shafts respectively inserted into the inner material channel and the outer material channel are inserted into the film blowing machine head along the radial direction, and the two inserting shafts are arranged oppositely.
When the material passageway and outer material passageway in the inserted shaft that sets up in this scheme inserted, blocked the formation of this partial mat surface layer, here cuts off the geomembrane of processing to the geomembrane edge that makes the cutting off department does not have mat surface layer, is convenient for overlap the butt joint to the geomembrane through glossy tip.
The film blowing machine head comprises an inner spiral body, a secondary inner spiral body, a middle spiral body, a secondary outer spiral body, an outer spiral body and a machine head body, wherein the secondary inner spiral body, the middle spiral body, the secondary outer spiral body, the outer spiral body and the machine head body are sequentially sleeved on the inner spiral body from inside to outside, an adjusting ring is fixedly connected to the discharge end of the machine head body, a mouth die is arranged in the inner cavity of the adjusting ring, a discharge cavity is formed between the mouth die and the adjusting ring, an inner material channel is formed between the inner spiral body and the secondary inner spiral body, a secondary inner material channel is formed between the secondary inner spiral body and the middle spiral body, a secondary outer material channel is formed between the secondary outer spiral body and the outer spiral body, an outer material channel is formed between the outer spiral body and the machine head body, and five connecting pipes are respectively communicated with the five spiral extruders and respectively are further communicated with the inner material channel, the secondary inner material channel and the middle material channel, A secondary foreign material channel and a foreign material channel.
Through five connecting pipes that set up in this scheme, make five kinds of materials extrude through interior material passageway, time interior material passageway, well material passageway, time outer material passageway and outer material passageway respectively, finally extrude through the play material chamber and form the geomembrane to realize five layers of geomembranes's extrusion processing.
Preferably, the feeding end of the inner spiral body is fixedly connected with an inner distribution sleeve, a secondary inner distribution sleeve, a middle distribution sleeve, a secondary outer distribution sleeve and an outer distribution sleeve which are sequentially sleeved from inside to outside, the inner cavity of the inner distribution sleeve is an inner distribution cavity, a secondary inner distribution cavity is formed between the inner distribution sleeve and the secondary inner distribution sleeve, a middle distribution cavity is formed between the secondary inner distribution sleeve and the middle distribution sleeve, a secondary outer distribution cavity is formed between the middle distribution sleeve and the secondary outer distribution sleeve, an outer distribution cavity is formed between the secondary outer distribution sleeve and the outer distribution sleeve, five connecting pipes are respectively communicated with the inner distribution cavity, the secondary inner distribution cavity, the middle distribution cavity, the secondary outer distribution cavity and the outer distribution cavity, the inner distribution cavity is communicated with the inner material channel through an inner connecting hole formed in the inner spiral body, the secondary inner distribution cavity is communicated with the secondary inner material channel through a secondary inner connecting hole formed in the inner spiral body, the middle distribution cavity is communicated with the middle material channel through a middle connecting hole formed in the inner spiral body, the secondary outer distribution cavity is communicated with the secondary outer material channel through a secondary outer connecting hole formed in the inner spiral body, and the outer distribution cavity is communicated with the outer material channel through an outer connecting hole formed in the inner spiral body.
The interior material passageway in this scheme, material passageway in inferior, well material passageway, time outer material passageway and outer material passageway communicate with five connecting pipes through interior distribution chamber, inferior interior distribution chamber, well distribution chamber, time outer distribution chamber and outer distribution chamber respectively.
Preferably, the connecting pipes are connected to the side surface of the outer distribution sleeve, the five connecting pipes are respectively communicated with the inner distribution cavity, the secondary inner distribution cavity, the middle distribution cavity, the secondary outer distribution cavity and the outer distribution cavity through radial connecting holes, and connecting sleeves are arranged in the hole walls of the radial connecting holes. The adapter sleeve is equipped with in the pore wall of radial connecting hole in this scheme to make the adapter sleeve pass each partition when distributing the chamber between the material.
Preferably, one end of the outer distribution sleeve, which is far away from the inner spiral body, is closed, and the outer distribution sleeve is connected with the inner spiral body through a machine head flange. In the scheme, one end of the outer distribution sleeve, which is far away from the inner spiral body, is sealed, so that the inner spiral body is extruded by the inner distribution sleeve, the secondary inner distribution sleeve, the middle distribution sleeve and the secondary outer distribution sleeve through the outer distribution sleeve arranged on the inner spiral body, and the integral fixation is realized
And optimally, the secondary inner spiral body, the middle spiral body, the secondary outer spiral body, the outer spiral body and the machine head body are respectively connected with the inner spiral body through bolts. In the scheme, the secondary inner spiral body, the middle spiral body, the secondary outer spiral body, the outer spiral body and the machine head body are respectively connected with the inner spiral body through bolts, so that the processing and the assembly are convenient.
Preferably, the width of the discharging cavity is gradually reduced along the material extruding direction. The width in discharge chamber reduces along material extrusion direction gradually in this scheme to guarantee sufficient extrusion force, improve geomembrane intensity.
The utility model has the beneficial effects that: according to the five-layer coextrusion nitrogen-filling rough-surface geomembrane and the production equipment, 5 materials are extruded through the inner spiral body, the secondary inner spiral body, the middle spiral body, the secondary outer spiral body and the machine head body which are sequentially sleeved on the inner spiral body from inside to outside, and finally extruded through the discharging cavity to form the geomembrane, so that the extrusion processing of the geomembrane with 5 layers of colors or materials is realized.
Drawings
FIG. 1 is a top plan view of a production rig in accordance with the present invention;
FIG. 2 is a cross-sectional view of a film blowing head according to the present invention;
FIG. 3 is another angle sectional view of the film blowing head of the present invention;
FIG. 4 is a schematic view of the exterior of the external dispensing sleeve of the present invention;
FIG. 5 is a cross-sectional view of an inner screw of the present invention;
fig. 6 is a cross-sectional view of a matte geomembrane of the present invention;
shown in the figure:
1. a neck ring, 2, an adjusting ring, 3, an inner spiral body, 4, a secondary inner spiral body, 5, a middle spiral body, 6, a secondary outer spiral body, 7, an outer spiral body, 8, a machine head body, 9, an inner material channel, 10, a secondary inner material channel, 11, a middle material channel, 12, a secondary outer material channel, 13, an outer material channel, 15, a discharge cavity, 16, a conical body, 17, an inner distribution sleeve, 18, a secondary inner distribution sleeve, 19, a middle distribution sleeve, 20, the film blowing machine comprises a secondary outer distribution matching pipe, 21, an outer distribution matching pipe, 22, an inner distribution cavity, 23, a secondary inner distribution cavity, 24, a middle distribution cavity, 25, a secondary outer distribution cavity, 26, an outer distribution cavity, 27, a machine head flange, 28, a connecting pipe, 29, a connecting sleeve, 30, a connecting pipe flange, 31, a blowing hole, 32, a spiral extruder, 33, an air inlet pipe, 34, a film blowing machine head, 35, an inserting shaft, 36, a main body layer, 37 and a rough surface layer.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 6, the five-layer coextrusion nitrogen-filling rough-surface geomembrane comprises three main body layers 36 which are fixedly attached, a rough surface layer 37 is fixedly attached to the outer side surface of the outer main body layer 36, and the rough surface layer 37 is formed by attaching extruded raw materials mixed with nitrogen.
As shown in fig. 1-6, the five-layer coextrusion nitrogen-filling method coarse-surface geomembrane production equipment comprises a film blowing machine head 34 and five spiral extruders 32, the discharge end of the film blowing machine head 34 is provided with an annular discharge cavity 15, the film blowing machine head 34 is internally provided with an inner material channel 9, a secondary inner material channel 10, a middle material channel 11, a secondary outer material channel 12 and an outer material channel 13 which are sequentially arranged from inside to outside, the inner material channel 9, the secondary inner material channel 10, the middle material channel 11, the secondary outer material channel 12 and the outer material channel 13 are all annular and are communicated with the discharge cavity 15, the inner material channel 9, the secondary inner material channel 10, the middle material channel 11, the secondary outer material channel 12 and the outer material channel 13 are respectively communicated with five screw extruders 32, an air inlet pipe 33 is communicated with the screw extruder 32 communicated with the inner material channel 9 and the outer material channel 13.
The air inlet pipe 33 is communicated to the spiral inner cavities of the inner material channel 9 and the outer material channel 13, so that the materials and the nitrogen are uniformly mixed.
As shown in fig. 2, two insertion shafts 35 are radially inserted into the blowing head 34 and respectively inserted into the inner material passage 9 and the outer material passage 13, the insertion shafts 35 are movable in the radial direction, and the outer insertion shaft end faces are attached to the outer circumferential surface of the outer spiral body 7, the inner insertion shaft end faces are attached to the inner circumferential surface of the secondary inner spiral body 4, and the two insertion shafts 35 are oppositely disposed, so that a smooth portion is formed on the geomembrane processed here.
Comprises an inner spiral body 3, and a secondary inner spiral body 4, a middle spiral body 5, a secondary outer spiral body 6, an outer spiral body 7 and a machine head body 8 which are sequentially sleeved on the inner spiral body 3 from inside to outside.
The outer ring of the inner spiral body 3 is a stepped shaft, the diameter of the inner spiral body is sequentially increased from front to back, the secondary inner spiral body 4, the middle spiral body 5, the secondary outer spiral body 6, the outer spiral body 7 and the machine head body 8 are all circular rings, and the secondary inner spiral body 4, the middle spiral body 5, the secondary outer spiral body 6, the outer spiral body 7 and the machine head body 8 are sequentially arranged on the front end face of the step.
The secondary inner spiral body 4, the middle spiral body 5, the secondary outer spiral body 6, the outer spiral body 7 and the machine head body 8 are respectively connected with the inner spiral body 3 through bolts, threaded counter bores are formed in the connecting surfaces of the secondary inner spiral body 4, the middle spiral body 5, the secondary outer spiral body 6, the outer spiral body 7 and the machine head body 8, and bolt through holes are formed in the inner spiral body 3.
An inner material channel 9 is formed between the inner spiral body 3 and the secondary inner spiral body 4, a secondary inner material channel 10 is formed between the secondary inner spiral body 4 and the middle spiral body 5, a middle material channel 11 is formed between the middle spiral body 5 and the secondary outer spiral body 6, a secondary outer material channel 12 is formed between the secondary outer spiral body 6 and the outer spiral body 7, and an outer material channel 13 is formed between the outer spiral body 7 and the machine head body 8.
The discharge end of the machine head body 8 is fixedly connected with an adjusting ring 2, an inner cavity of the adjusting ring is provided with a neck mold 1, a discharge cavity 15 is formed between the neck mold 1 and the adjusting ring 2, the discharge cavity is annular, materials are extruded from the discharge cavity 15 from back to front, and the width of the discharge cavity 15 is gradually reduced along the material extrusion direction.
The neck ring mold 1 is arranged on the front end surface of the inner spiral body 3 through bolts, so that the size of the discharging cavity 15 is kept at a fixed value, and discharging is stable.
The inner material channel 9, the secondary inner material channel 10, the middle material channel 11, the secondary outer material channel 12 and the outer material channel 13 are all communicated with the discharging cavity 15, as shown in fig. 1, the middle material channel 11 is opposite to the discharging cavity 15 so as to achieve communication, an inner ring of the machine head body 8 is provided with an inclined plane extending to the discharging cavity 15, a certain gap is kept between the front end of the secondary outer spiral body 6 and the front end of the outer spiral body 7 and the inclined plane, and the secondary outer material channel 12 and the outer material channel 13 are communicated with the discharging cavity 15 through the gap.
An inclined plane is also arranged behind the outer ring of the neck ring mold 1, and the front end of the secondary inner spiral body 4 and the front end of the middle spiral body 5 keep a certain gap with the inclined plane of the neck ring mold 1, so that the inner material channel 9 and the secondary inner material channel 10 are communicated with the discharge cavity 15 through the gap.
The screw extruder further comprises five connecting pipes 28 communicated to the five screw extruders 32, the five connecting pipes 28 are communicated with the inner material channel 9, the secondary inner material channel 10, the middle material channel 11, the secondary outer material channel 12 and the outer material channel 13, and the five connecting pipes 28 are communicated with the inner material channel 9, the secondary inner material channel 10, the middle material channel 11, the secondary outer material channel 12 and the outer material channel 13 in a one-to-one correspondence mode.
The feeding end of the inner spiral body 3 is fixedly connected with an inner distribution sleeve 17, a secondary inner distribution sleeve 18, a middle distribution sleeve 19, a secondary outer distribution sleeve 20 and an outer distribution sleeve 21 which are sequentially sleeved from inside to outside, as shown in fig. 4, the rear end of the inner spiral body 3 is provided with a stepped hole, the diameter of the stepped hole is sequentially increased from front to back, and the inner distribution sleeve 17, the secondary inner distribution sleeve 18, the middle distribution sleeve 19, the secondary outer distribution sleeve 20 and the outer distribution sleeve 21 are sequentially inserted into the stepped hole from front to back.
The end of the outer distribution sleeve 21 remote from the inner spiral body 3 is closed, and the outer distribution sleeve 21 is connected with the inner spiral body 3 through a machine head flange 27, so that the inner distribution sleeve 17, the secondary inner distribution sleeve 18, the middle distribution sleeve 19 and the secondary outer distribution sleeve 20 are pressed in the stepped hole.
The front end of the inner spiral body 3 is provided with a front end through hole communicated with the front end of the inner distribution sleeve 17, a conical body 16 is arranged in the front end through hole, and the rear end of the conical body 16 faces the inner distribution sleeve 17 and is conical.
The inner cavity of the inner distributing sleeve 17 is an inner distributing cavity 22, a secondary inner distributing cavity 23 is formed between the inner distributing sleeve 17 and the secondary inner distributing sleeve 18, a middle distributing cavity 24 is formed between the secondary inner distributing sleeve 18 and the middle distributing sleeve 19, a secondary outer distributing cavity 25 is formed between the middle distributing sleeve 19 and the secondary outer distributing sleeve 20, an outer distributing cavity 26 is formed between the secondary outer distributing sleeve 20 and the outer distributing sleeve 21, five connecting pipes 28 are respectively communicated with the inner distributing cavity 22, the secondary inner distributing cavity 23, the middle distributing cavity 24, the secondary outer distributing cavity 25 and the outer distributing cavity 26, the inner distributing cavity 22 is communicated with the inner material channel 9 through an inner connecting hole formed in the inner spiral body 3, the secondary inner distributing cavity 23 is communicated with the secondary inner material channel 10 through a secondary inner connecting hole formed in the inner spiral body 3, the middle distributing cavity 24 is communicated with the middle material channel 11 through a middle connecting hole formed in the inner spiral body 3, and the secondary outer distributing cavity 25 is communicated with the secondary outer material channel 12 through a secondary outer connecting hole formed in the inner spiral body 3 The outer distribution chamber 26 communicates with the outer material channel 13 via an outer connecting bore formed in the inner spiral body 3.
The connecting pipes 28 are connected to the side surface of the outer distribution sleeve 21, five connecting pipes 28 are respectively communicated with the inner distribution cavity 22, the secondary inner distribution cavity 23, the middle distribution cavity 24, the secondary outer distribution cavity 25 and the outer distribution cavity 26 through radial connecting holes, connecting sleeves 29 are arranged in the hole walls of the radial connecting holes, the five connecting pipes and the connecting holes of the outer distribution sleeve 21 are arranged along the circumferential direction, a connecting pipe flange 30 is arranged at the other end of each connecting pipe 28, and the connecting pipe flange 30 is connected with a screw extruder 32 through a pipeline.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (8)
1. The five-layer coextrusion nitrogen-filling method coarse-surface geomembrane production equipment is characterized in that: comprises a film blowing head (34) and five spiral extruders (32), wherein the discharge end of the film blowing head (34) is provided with an annular discharge cavity (15), the film blowing head (34) is internally provided with an inner material channel (9), a secondary inner material channel (10), a middle material channel (11), a secondary outer material channel (12) and an outer material channel (13) which are sequentially arranged from inside to outside, the inner material channel (9), the secondary inner material channel (10), the middle material channel (11), the secondary outer material channel (12) and the outer material channel (13) are all annular and are communicated with the discharging cavity (15), the inner material channel (9), the secondary inner material channel (10), the middle material channel (11), the secondary outer material channel (12) and the outer material channel (13) are respectively communicated with five screw extruders (32), an air inlet pipe (33) is communicated with the spiral extruder (32) communicated with the inner material channel (9) and the outer material channel (13).
2. The five-layer coextrusion nitrogen-filling method coarse-surface geomembrane production equipment as claimed in claim 1, wherein: two inserting shafts (35) which are respectively inserted into the inner material channel (9) and the outer material channel (13) are inserted into the film blowing machine head (34) along the radial direction, and the two inserting shafts (35) are arranged oppositely.
3. The five-layer coextrusion nitrogen-filling method coarse-surface geomembrane production equipment as claimed in claim 1, wherein: the film blowing machine head (34) comprises an inner spiral body (3), and a secondary inner spiral body (4), a middle spiral body (5), a secondary outer spiral body (6), an outer spiral body (7) and a machine head body (8) which are sequentially sleeved on the inner spiral body (3) from inside to outside, wherein the discharge end of the machine head body (8) is fixedly connected with an adjusting ring (2), an inner cavity of the adjusting ring is provided with an opening die (1), a discharge cavity (15) is formed between the opening die (1) and the adjusting ring (2), an inner material channel (9) is formed between the inner spiral body (3) and the secondary inner spiral body (4), a secondary inner material channel (10) is formed between the secondary inner spiral body (4) and the middle spiral body (5), a middle material channel (11) is formed between the middle spiral body (5) and the secondary outer spiral body (6), and a secondary outer material channel (12) is formed between the secondary outer spiral body (6) and the outer spiral body (7), an outer material channel (13) is formed between the outer spiral body (7) and the machine head body (8), and the machine head further comprises five connecting pipes (28) which are respectively communicated to the five spiral extruders (32), wherein the five connecting pipes (28) are respectively communicated with the inner material channel (9), the secondary inner material channel (10), the middle material channel (11), the secondary outer material channel (12) and the outer material channel (13).
4. The five-layer coextrusion nitrogen-filling rough-surface geomembrane production equipment as claimed in claim 3, wherein: an inner distribution sleeve (17), a secondary inner distribution sleeve (18), a middle distribution sleeve (19), a secondary outer distribution sleeve (20) and an outer distribution sleeve (21) which are sequentially sleeved from inside to outside are fixedly connected to the feed end of the inner spiral body (3), an inner cavity of the inner distribution sleeve (17) is an inner distribution cavity (22), a secondary inner distribution cavity (23) is formed between the inner distribution sleeve (17) and the secondary inner distribution sleeve (18), a middle distribution cavity (24) is formed between the secondary inner distribution sleeve (18) and the middle distribution sleeve (19), a secondary outer distribution cavity (25) is formed between the middle distribution sleeve (19) and the secondary outer distribution sleeve (20), an outer distribution cavity (26) is formed between the secondary outer distribution sleeve (20) and the outer distribution sleeve (21), and five connecting pipes (28) are respectively communicated with the inner distribution cavity (22), the secondary inner distribution cavity (23), the middle distribution cavity (24), the secondary outer distribution cavity (25) and the outer distribution cavity (26), the inner distribution cavity (22) is communicated with the inner material channel (9) through an inner connecting hole formed in the inner spiral body (3), the secondary inner distribution cavity (23) is communicated with the secondary inner material channel (10) through a secondary inner connecting hole formed in the inner spiral body (3), the middle distribution cavity (24) is communicated with the middle material channel (11) through a middle connecting hole formed in the inner spiral body (3), the secondary outer distribution cavity (25) is communicated with the secondary outer material channel (12) through a secondary outer connecting hole formed in the inner spiral body (3), and the outer distribution cavity (26) is communicated with the outer material channel (13) through an outer connecting hole formed in the inner spiral body (3).
5. The five-layer coextrusion nitrogen-filling rough-surface geomembrane production equipment as claimed in claim 4, wherein: the connecting pipes (28) are connected to the side face of the outer distribution sleeve (21), the five connecting pipes (28) are respectively communicated with the inner distribution cavity (22), the secondary inner distribution cavity (23), the middle distribution cavity (24), the secondary outer distribution cavity (25) and the outer distribution cavity (26) through radial connecting holes, and connecting sleeves (29) are arranged in the hole walls of the radial connecting holes.
6. The five-layer coextrusion nitrogen-filling rough-surface geomembrane production equipment as claimed in claim 4, wherein: one end, far away from the inner spiral body (3), of the outer distribution sleeve (21) is closed, and the outer distribution sleeve (21) is connected with the inner spiral body (3) through a machine head flange (27).
7. The five-layer coextrusion nitrogen-filling rough-surface geomembrane production equipment as claimed in claim 3, wherein: the secondary inner spiral body (4), the middle spiral body (5), the secondary outer spiral body (6), the outer spiral body (7) and the machine head body (8) are respectively connected with the inner spiral body (3) through bolts.
8. The five-layer coextrusion nitrogen-filling rough-surface geomembrane production equipment as claimed in claim 3, wherein: the width of the discharging cavity (15) is gradually reduced along the material extruding direction.
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| CN202121845144.9U CN215703876U (en) | 2021-08-09 | 2021-08-09 | Five-layer coextrusion nitrogen-filling method rough-surface geomembrane production equipment |
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| CN202121845144.9U CN215703876U (en) | 2021-08-09 | 2021-08-09 | Five-layer coextrusion nitrogen-filling method rough-surface geomembrane production equipment |
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