CN110843182A - Breathing mask production device - Google Patents

Breathing mask production device Download PDF

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Publication number
CN110843182A
CN110843182A CN201911129157.3A CN201911129157A CN110843182A CN 110843182 A CN110843182 A CN 110843182A CN 201911129157 A CN201911129157 A CN 201911129157A CN 110843182 A CN110843182 A CN 110843182A
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CN
China
Prior art keywords
material conveying
conveying pipelines
groups
pipe
pipelines
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911129157.3A
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Chinese (zh)
Inventor
雷斌宝
雷斌磊
邓攀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Lidson Medical Devices Co Ltd
Original Assignee
Hunan Lidson Medical Devices Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Lidson Medical Devices Co Ltd filed Critical Hunan Lidson Medical Devices Co Ltd
Priority to CN201911129157.3A priority Critical patent/CN110843182A/en
Publication of CN110843182A publication Critical patent/CN110843182A/en
Pending legal-status Critical Current

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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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/58—Details
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1753—Cleaning or purging, e.g. of the injection unit
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2207/00—Methods of manufacture, assembly or production
    • A61M2207/10—Device therefor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Emergency Medicine (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention provides a breathing mask production device, which belongs to the technical field of medical appliance manufacturing and comprises a fixed cavity, wherein two groups of first material conveying pipelines are symmetrically arranged in the fixed cavity, one ends of the two groups of first material conveying pipelines are communicated with a material inlet pipe to form a three-way structure, the other ends of the two groups of first material conveying pipelines are connected with second material conveying pipelines through a filtering component, and the ends, far away from the filtering component, of the two groups of second material conveying pipelines are communicated with a material outlet pipe to form a three-way structure. According to the embodiment of the invention, the replacement and cleaning of the filter assembly can be realized without stopping, and the pressurization treatment is carried out on the inside of the second conveying pipeline through the pressurization pipe, so that the materials in the second conveying pipeline and the first conveying pipeline are discharged from the waste material outlet pipe, the temperature reduction and solidification of the materials in the first conveying pipeline and the second conveying pipeline are avoided, the normal circulation of subsequent materials is influenced, and the temperature change of the subsequent materials caused by the mixing of the subsequent materials is also avoided, so that the molding of a product is influenced.

Description

Breathing mask production device
Technical Field
The invention belongs to the technical field of medical equipment manufacturing, and particularly relates to a production device of a breathing mask.
Background
Anesthesia respirator is made by the PVC material mostly, specifically for carry out injection moulding in squeezing into the mould with fused PVC through the extruder, still need filter the melting PVC through filter equipment before the extruder extrudes into the mould with fused PVC to improve the shaping quality of goods.
Patent document No. CN209361570U discloses a production device of anesthesia respirator, and the device is through setting up two sets of branch pipes at screw extruder discharge end, reason hydro-cylinder control baffle carries out alternate shutoff to two sets of branch pipes to realize the free switching of material circulation route, change the filter screen that is in on non-material circulation route, thereby improved work efficiency, do not influence the production progress.
However, in the switching process of the baffle plate of the device, materials are accumulated in the non-material flow path, the accumulated materials are easy to cool and solidify, and after the path is started again, the path is easy to block, so that the normal circulation of the materials is influenced.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, an embodiment of the present invention provides a respiratory mask production apparatus.
In order to solve the technical problems, the invention provides the following technical scheme:
a breathing mask production device comprises a fixed cavity, wherein two groups of first conveying pipelines are symmetrically arranged in the fixed cavity, one ends of the two groups of first conveying pipelines are communicated with a feeding pipe and form a three-way structure, the other ends of the two groups of first conveying pipelines are connected with second conveying pipelines through a filtering assembly, one ends of the two groups of second conveying pipelines, which are far away from the filtering assembly, are communicated with a discharging pipe and form a three-way structure, baffles are arranged at the communication positions of the two groups of first conveying pipelines and the feeding pipe and the communication positions of the two groups of second conveying pipelines and the discharging pipe, and an oil cylinder for controlling the movement of the baffles is also arranged in the fixed cavity; and waste material outlet pipes are arranged at the communication parts of the two groups of first material conveying pipelines and the material inlet pipe, and the communication parts of the two groups of second material conveying pipelines and the material outlet pipe are connected with a booster pump through booster pipes.
As a further improvement of the invention: the filter assembly comprises a cylinder body detachably connected between a first material conveying pipeline and a second material conveying pipeline and a filter element arranged inside the cylinder body.
As a further improvement of the invention: the two ends of the cylinder are correspondingly connected with the first material conveying pipeline and the second material conveying pipeline through flanges.
As a further improvement of the invention: the waste material exit tube is provided with an electromagnetic valve, the fixed cavity is further provided with a controller, and the electromagnetic valve, the oil cylinder and the booster pump are electrically connected with the controller.
As a still further improvement of the invention: the feeding pipe is internally provided with a pressure sensor which is electrically connected with the controller.
As a still further improvement of the invention: the controller is an ARM9TDMI series controller, the oil cylinder is a DS50-50 type oil cylinder, the booster pump is an ISGH type vertical stainless steel booster pump, and the electromagnetic valve is a 2W160-15 type electromagnetic valve.
As a still further improvement of the invention: the pressure sensor is a PT124G-111 type pressure sensor.
Compared with the prior art, the invention has the beneficial effects that:
the embodiment of the invention can realize replacement and cleaning of the filter assembly without shutdown, and the pressurization treatment is carried out on the inside of the second conveying pipeline through the pressurization pipe, so that the materials in the second conveying pipeline and the first conveying pipeline are discharged from the waste outlet pipe, thereby avoiding the temperature reduction and solidification of the materials in the first conveying pipeline and the second conveying pipeline, influencing the normal circulation of subsequent materials, simultaneously avoiding the temperature change of the subsequent materials caused by the mixing of the materials with the subsequent materials, and influencing the forming of products.
Drawings
FIG. 1 is a schematic view of a respiratory mask manufacturing apparatus;
FIG. 2 is a schematic diagram of a filter assembly of a respiratory mask manufacturing apparatus;
FIG. 3 is an enlarged view of area A in FIG. 1;
in the figure: 1-controller, 2-fixed cavity, 3-waste outlet pipe, 4-oil cylinder, 5-first material conveying pipeline, 6-filtering component, 7-second material conveying pipeline pole, 8-booster pump, 9-booster pipe, 10-discharge pipe, 11-electromagnetic valve, 12-baffle, 13-material inlet pipe, 14-pressure sensor, 15-cylinder and 16-filter element.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Example 1
Referring to fig. 1-2, the present embodiment provides a respiratory mask production apparatus, including a fixed cavity 2, two sets of first material delivery pipelines 5 are symmetrically installed inside the fixed cavity 2, one ends of the two sets of first material delivery pipelines 5 are both communicated with a material inlet pipe 13 and form a three-way structure, the other ends of the two sets of first material delivery pipelines 5 are both connected with a second material delivery pipeline 7 through a filter assembly 6, one ends of the two sets of second material delivery pipelines 7 far away from the filter assembly 6 are both communicated with a material discharge pipe 10 and form a three-way structure, baffle plates 12 are respectively disposed at the communication positions of the two sets of first material delivery pipelines 5 and the material inlet pipe 13 and at the communication positions of the two sets of second material delivery pipelines 7 and the material discharge pipe 10, and an oil cylinder 4 for; waste material outlet pipes 3 are further arranged at the communication positions of the two groups of first material conveying pipelines 5 and the material inlet pipe 13, and the communication positions of the two groups of second material conveying pipelines 7 and the material discharge pipe 10 are connected with a booster pump 8 through a booster pipe 9.
Firstly, the oil cylinder 4 controls the baffle plate 12 to move, so that the baffle plate 12 corresponding to the feeding pipe 13 blocks one group of first material conveying pipelines 5, the baffle plate 12 corresponding to the discharging pipe 10 blocks one group of second material conveying pipelines 7, so as to ensure that the material extruded by the extruder only flows from the other group of first material conveying pipelines 5 and the second material conveying pipelines 7 corresponding to the first material conveying pipelines 5, the corresponding filtering components 6 are utilized to filter the material, after the filtering components 6 filter for a period of time, the oil cylinder 4 drives the baffle plate 12 to move, the other group of first material conveying pipelines 5 and the second material conveying pipelines 7 are blocked, the material extruded by the extruder flows through the first material conveying pipelines 5 and the second material conveying pipelines 7, the corresponding filtering components 6 are utilized to filter the material, at the moment, the other group of filtering components 6 in an idle state can be replaced and cleaned, because the first material conveying pipeline 5 and the second material conveying pipeline 7 corresponding to the filter assembly 6 in the idle state are filled with materials, the booster pump 8 is utilized to carry out boosting treatment on the inside of the second material conveying pipeline 7 through the booster pipe 9, so that the materials in the second material conveying pipeline 7 and the first material conveying pipeline 5 are discharged from the waste material outlet pipe 3, thereby avoiding the temperature reduction and solidification of the materials in the first material conveying pipeline 5 and the second material conveying pipeline 7, influencing the normal circulation of subsequent materials, simultaneously avoiding the mixing with the subsequent materials, causing the temperature change of the subsequent materials, and further influencing the molding of products, in addition, in the process of discharging the materials from the waste material outlet pipe 3, the materials which are positioned in the second material conveying pipeline 7 and filtered by the filter assembly 6 reversely pass through the filter assembly 6, thereby taking away the dirt blocked at one side of the filter assembly 6 from the filter assembly 6, self-cleaning of the filter assembly 6 is achieved.
Specifically, the filter assembly 6 includes a cylinder 15 detachably connected between the first material delivery pipe 5 and the second material delivery pipe 7, and a filter element 16 installed inside the cylinder 15.
Specifically, both ends of the cylinder 15 are correspondingly connected with the first material conveying pipeline 5 and the second material conveying pipeline 7 through flanges.
Further, be provided with solenoid valve 11 on the waste material exit tube 3, still install controller 1 on the fixed cavity 2, solenoid valve 11, hydro-cylinder 4 and booster pump 8 all with 1 electric connection of controller.
When a required material flows through a group of first material conveying pipelines 5 and second material conveying pipelines 7 for a period of time, the trafficability of the corresponding filter assemblies 6 is reduced, at the moment, the oil cylinder 4 is controlled by the controller 1 to drive the baffle plate 12 to move, the first material conveying pipelines 5 and the second material conveying pipelines 7 are not blocked, meanwhile, the controller 1 controls the booster pump 8 corresponding to the second material conveying pipelines 7 to start and controls the electromagnetic valve 11 corresponding to the waste outlet pipe 3 to open, the booster pump 8 is used for increasing the pressure inside the second material conveying pipelines 7 and the first material conveying pipelines 5, and the material inside the second material conveying pipelines 7 and the first material conveying pipelines 5 is discharged through the waste outlet pipe 3.
In this embodiment, the controller 1 is an ARM9TDMI series controller, the oil cylinder 1 is a DS50-50 type oil cylinder, the booster pump 8 is an ISGH type vertical stainless steel booster pump, and the electromagnetic valve 11 is a 2W160-15 type electromagnetic valve.
The working principle of the embodiment is as follows: firstly, the oil cylinder 4 controls the baffle plate 12 to move, so that the baffle plate 12 corresponding to the feeding pipe 13 blocks one group of first material conveying pipelines 5, the baffle plate 12 corresponding to the discharging pipe 10 blocks one group of second material conveying pipelines 7, so as to ensure that the material extruded by the extruder only flows from the other group of first material conveying pipelines 5 and the second material conveying pipelines 7 corresponding to the first material conveying pipelines 5, the corresponding filtering components 6 are utilized to filter the material, after the filtering components 6 filter for a period of time, the oil cylinder 4 drives the baffle plate 12 to move, the other group of first material conveying pipelines 5 and the second material conveying pipelines 7 are blocked, the material extruded by the extruder flows through the first material conveying pipelines 5 and the second material conveying pipelines 7, the corresponding filtering components 6 are utilized to filter the material, at the moment, the other group of filtering components 6 in an idle state can be replaced and cleaned, because the first material conveying pipeline 5 and the second material conveying pipeline 7 corresponding to the filter assembly 6 in the idle state are filled with materials, the booster pump 8 is utilized to carry out boosting treatment on the inside of the second material conveying pipeline 7 through the booster pipe 9, so that the materials in the second material conveying pipeline 7 and the first material conveying pipeline 5 are discharged from the waste material outlet pipe 3, thereby avoiding the temperature reduction and solidification of the materials in the first material conveying pipeline 5 and the second material conveying pipeline 7, influencing the normal circulation of subsequent materials, simultaneously avoiding the mixing with the subsequent materials, causing the temperature change of the subsequent materials, and further influencing the molding of products, in addition, in the process of discharging the materials from the waste material outlet pipe 3, the materials which are positioned in the second material conveying pipeline 7 and filtered by the filter assembly 6 reversely pass through the filter assembly 6, thereby taking away the dirt blocked at one side of the filter assembly 6 from the filter assembly 6, self-cleaning of the filter assembly 6 is achieved.
When a required material flows through a group of first material conveying pipelines 5 and second material conveying pipelines 7 for a period of time, the trafficability of the corresponding filter assemblies 6 is reduced, at the moment, the oil cylinder 4 is controlled by the controller 1 to drive the baffle plate 12 to move, the first material conveying pipelines 5 and the second material conveying pipelines 7 are not blocked, meanwhile, the controller 1 controls the booster pump 8 corresponding to the second material conveying pipelines 7 to start and controls the electromagnetic valve 11 corresponding to the waste outlet pipe 3 to open, the booster pump 8 is used for increasing the pressure inside the second material conveying pipelines 7 and the first material conveying pipelines 5, and the material inside the second material conveying pipelines 7 and the first material conveying pipelines 5 is discharged through the waste outlet pipe 3.
Example 2
Referring to fig. 1 and fig. 3, in the present embodiment, compared to embodiment 1, a pressure sensor 14 is disposed inside the feeding pipe 13, and the pressure sensor 14 is electrically connected to the controller 1.
Through the setting of pressure sensor 14, can detect the pressure that corresponds the tee bend department with inlet pipe 13, when the pressure increase that corresponds the tee bend department with inlet pipe 13 and surpass the predetermined value, show that the jam condition of present filter assembly 6 can't satisfy the material circulation demand, pressure sensor 14 sends alarm signal to controller 1 this moment, and controller 1 control hydro-cylinder 4 drives baffle 12 and removes, realizes the switching of material circulation route.
The pressure sensor 14 is a PT124G-111 type pressure sensor.
It should be noted that the connection relationships between the controller 1 and the oil cylinder 4, the booster pump 8, the electromagnetic valve 11 and the pressure sensor 14 in the present invention are all the prior art, and are not described in detail in the present invention.
The embodiment of the invention can realize the replacement and cleaning of the filter assembly without stopping, and the pressurization treatment is carried out on the inside of the second conveying pipeline 7 through the pressurization pipe 9, so that the materials in the second conveying pipeline 7 and the first conveying pipeline 5 are discharged from the waste outlet pipe 3, the temperature reduction and solidification of the materials in the first conveying pipeline 5 and the second conveying pipeline 7 are avoided, the normal circulation of subsequent materials is influenced, the temperature change of the subsequent materials caused by the mixing of the subsequent materials is also avoided, and the forming of a product is influenced, in addition, in the process of discharging the materials from the waste outlet pipe 3, the materials which are positioned in the second conveying pipeline 7 and filtered by the filter assembly 6 reversely pass through the filter assembly 6, and the dirt blocked on one side of the filter assembly 6 is taken away from the filter assembly 6, so that the self-cleaning of the filter assembly 6 is realized.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims (7)

1. A breathing mask production device comprises a fixed cavity (2) and is characterized in that two groups of first material conveying pipelines (5) are symmetrically arranged inside the fixed cavity (2), one ends of the two groups of first material conveying pipelines (5) are communicated with a feeding pipe (13) to form a three-way structure, the other ends of the two groups of first material conveying pipelines (5) are connected with second material conveying pipelines (7) through a filtering component (6), one ends of the two groups of second material conveying pipelines (7) far away from the filtering component (6) are communicated with a discharging pipe (10) to form a three-way structure, baffles (12) are arranged at the communication positions of the two groups of first material conveying pipelines (5) and the feeding pipe (13) and at the communication positions of the two groups of second material conveying pipelines (7) and the discharging pipe (10), and an oil cylinder (4) for controlling the baffles (12) to move is further arranged inside the fixed cavity; waste material outlet pipes (3) are further arranged at the communication positions of the two groups of first material conveying pipelines (5) and the material inlet pipe (13), and the communication positions of the two groups of second material conveying pipelines (7) and the material discharge pipe (10) are connected with a booster pump (8) through booster pipes (9).
2. A device for producing a breathing mask according to claim 1, wherein the filter assembly (6) comprises a cartridge (15) removably connected between the first delivery duct (5) and the second delivery duct (7) and a filter cartridge (16) mounted inside the cartridge (15).
3. A device for producing a breathing mask according to claim 2, wherein both ends of the cylinder (15) are connected to the first material delivery pipe (5) and the second material delivery pipe (7) by flanges.
4. The respirator production device according to claim 1, wherein the waste outlet pipe (3) is provided with an electromagnetic valve (11), the fixed cavity (2) is further provided with a controller (1), and the electromagnetic valve (11), the oil cylinder (4) and the booster pump (8) are electrically connected with the controller (1).
5. A breathing mask production device as claimed in claim 4, wherein a pressure sensor (14) is arranged inside the feeding pipe (13), said pressure sensor (14) being electrically connected to said controller (1).
6. A respirator production apparatus according to claim 4, wherein said controller (1) is an ARM9TDMI series controller, the cylinder (1) is a DS50-50 type cylinder, the booster pump (8) is an ISGH type vertical stainless steel booster pump, and the solenoid valve (11) is a 2W160-15 type solenoid valve.
7. A respiratory mask production apparatus according to claim 5, wherein the pressure sensor (14) is a PT124G-111 type pressure sensor.
CN201911129157.3A 2019-11-18 2019-11-18 Breathing mask production device Pending CN110843182A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911129157.3A CN110843182A (en) 2019-11-18 2019-11-18 Breathing mask production device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911129157.3A CN110843182A (en) 2019-11-18 2019-11-18 Breathing mask production device

Publications (1)

Publication Number Publication Date
CN110843182A true CN110843182A (en) 2020-02-28

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CN201911129157.3A Pending CN110843182A (en) 2019-11-18 2019-11-18 Breathing mask production device

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577680B1 (en) * 1991-03-25 1995-10-18 EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H. Filtering device for fluids to be purified
CN103144276A (en) * 2013-02-27 2013-06-12 张孝权 Filter device of automatic-deslagging plastic film extruder
CN109248362A (en) * 2018-11-19 2019-01-22 湖南利德森医疗器械有限公司 A kind of process units of anaesthesia breathing mask
CN209466648U (en) * 2018-12-18 2019-10-08 河南安吉塑料机械有限公司 A kind of plastic extruder exempts from the net-filter assembly of demolition clean

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0577680B1 (en) * 1991-03-25 1995-10-18 EREMA Engineering Recycling Maschinen und Anlagen Gesellschaft m.b.H. Filtering device for fluids to be purified
CN103144276A (en) * 2013-02-27 2013-06-12 张孝权 Filter device of automatic-deslagging plastic film extruder
CN109248362A (en) * 2018-11-19 2019-01-22 湖南利德森医疗器械有限公司 A kind of process units of anaesthesia breathing mask
CN209466648U (en) * 2018-12-18 2019-10-08 河南安吉塑料机械有限公司 A kind of plastic extruder exempts from the net-filter assembly of demolition clean

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Application publication date: 20200228

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