CN114932638A - Low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device and use method thereof - Google Patents

Low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device and use method thereof Download PDF

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Publication number
CN114932638A
CN114932638A CN202210536228.7A CN202210536228A CN114932638A CN 114932638 A CN114932638 A CN 114932638A CN 202210536228 A CN202210536228 A CN 202210536228A CN 114932638 A CN114932638 A CN 114932638A
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China
Prior art keywords
mixing chamber
mixing
materials
low
turning
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CN202210536228.7A
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Chinese (zh)
Inventor
袁敏
耿志祥
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Hechang Cable Material Technology Jiangsu Co ltd
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Hechang Cable Material Technology Jiangsu Co ltd
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Priority to CN202210536228.7A priority Critical patent/CN114932638A/en
Publication of CN114932638A publication Critical patent/CN114932638A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/24—Component parts, details or accessories; Auxiliary operations for feeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/26—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The invention discloses a low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device and a use method thereof, wherein the device comprises a mixing chamber and a plurality of material guide mechanisms; the plurality of material guide mechanisms are communicated with the material mixing cavity in the material mixing chamber; so that various materials can be respectively conveyed into the mixing chamber through the material guide mechanism to be mixed; the material mixing chamber is characterized in that a spiral material mixing mechanism is arranged at the center of the material mixing chamber and used for stirring various materials in the material mixing chamber, and a material turning mechanism is arranged at the edge of the material mixing chamber and is used for turning the materials at the edge towards the middle of the material mixing chamber. This cable material mixes preparation facilities can be with the indoor material misce bene of compounding through spiral compounding mechanism and rather than complex turn-down mechanism, and turn-down mechanism moves along the inner wall of compounding room simultaneously, and the sea can be with the material at edge to the centre is turned to further improve the efficiency and the effect of compounding.

Description

Low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device and use method thereof
Technical Field
The invention relates to the technical field of polyolefin cable material mixing, in particular to a low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device and a using method thereof.
Background
The plastic for the insulation and the sheath of the electric wire and the cable is commonly called as a cable material, wherein the plastic comprises various varieties of rubber, plastic, nylon and the like, cable material production enterprises take cable production enterprises as users, the market of the cable material is provided as long as the electric wire and the cable are in demand, the electric wire and the cable almost need an insulation layer opening except for bare wire products such as steel-cored aluminum stranded wires, electromagnetic wires and the like, at present, the electric wire and the cable production enterprises in China are nearly 5000 families, and the electric wire and the cable have huge demands on the electric wire and the cable products for urban and rural power grid transformation, western large-scale development and large-scale upgrading and transformation of communication facilities, so that the cable material has wide market development prospect in China for a period of time.
The cable material with low smoke and low halogen is a cable material which is formed by thermoplasticity or thermosetting and has low smoke discharge when being heated, a plurality of materials and compatilizers are required to be mixed in the production process of the cable material, the materials comprise inorganic filler, organic resin, compatilizer and the like, and the uniform mixing of the materials is also the guarantee of the quality of finished cables.
The traditional cable material is usually mixed by using a common stirrer, the mixing efficiency is low, and the material mixing degree of the center and the edge of the charging barrel is different, so that the manufactured cable material is difficult to meet the quality requirement.
Disclosure of Invention
The invention aims to provide a low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device and a using method thereof, and solves the problems that the traditional stirrer is low in material mixing efficiency and the material mixing degree of the center and the edge of a charging barrel is different.
In order to solve the technical problems, the invention provides a low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device, which comprises a mixing chamber and a plurality of material guide mechanisms, wherein the mixing chamber is provided with a plurality of material guide mechanisms; the plurality of material guide mechanisms are communicated with the material mixing cavity in the material mixing chamber; so that various materials can be respectively conveyed into the mixing chamber through the material guide mechanism to be mixed;
the material mixing chamber is characterized in that a spiral material mixing mechanism is arranged at the center of the material mixing chamber and used for stirring various materials in the material mixing chamber, and a material turning mechanism is arranged at the edge of the material mixing chamber and is used for turning the materials at the edge towards the middle of the material mixing chamber.
Preferably, the spiral mixing mechanism comprises a stirring rod and spiral mixing blades arranged along the length direction of the stirring rod, and one end of the stirring rod penetrates through and is rotatably connected with the mixing chamber; and the end part of the mixing chamber, through which the stirring rod passes, is connected with a mixing motor, and the stirring rod and the spiral mixing blade are driven by the mixing motor to rotate in the mixing chamber.
Preferably, the material turning mechanism comprises a material turning rod and a plurality of material turning blades arranged along the length direction of the material turning rod, the material turning blades rotate along the inner wall of the mixing chamber along with the material turning rod, and materials at the inner edge of the mixing chamber can be turned towards the middle.
Preferably, a driving wheel is mounted at the top of the stirring rod and fixedly connected with the stirring rod, so that the driving wheel rotates along with the stirring rod under the action of the mixing motor;
the top of the material turning rod is provided with a driven wheel meshed with the driving wheel, and the driven wheel rotates around the driving wheel under the action of the driving wheel, so that the material turning rod runs along the inner wall of the mixing chamber.
Preferably, the top of the mixing chamber is further provided with a gear ring, one side of the driven wheel is meshed with the driving wheel, and the other side of the driven wheel is meshed with the gear ring, so that the driven wheel rotates around the driving wheel between the driving wheel and the gear ring.
Preferably, the material turning rod is rotatably connected with the driven wheel, so that the material turning rod can rotate around the driving wheel and can rotate.
Preferably, the plurality of the turning blades are flexible blades, and the turning blades are in contact with the inner wall of the mixing chamber, so that the turning blades can scrape materials adhered to the inner wall of the mixing chamber.
Preferably, the material guiding mechanism comprises a material guiding pipe, and a spiral material guiding assembly and a material inlet which are arranged in the material guiding pipe, wherein one end of the material guiding pipe, which is connected with the material mixing chamber, is communicated with the material mixing cavity in the material mixing chamber, so that the material enters the material mixing cavity in the material mixing chamber along the material guiding pipe under the action of the spiral material guiding assembly;
the spiral material guiding assembly comprises a material guiding rod and spiral material guiding blades arranged along the length direction of the material guiding rod, one end of the material guiding rod, which is far away from the material mixing chamber, is connected with a material guiding motor, and the material guiding rod and the spiral material guiding blades are driven to rotate by the material guiding motor;
the feed inlet is arranged on the side wall of the material guide pipe and used for feeding.
Preferably, a discharge hopper is arranged at the bottom of the mixing chamber and used for guiding out the uniformly mixed materials; a gate valve is arranged between the mixing chamber and the discharge hopper so as to control the on-off between the mixing chamber and the discharge hopper.
The invention also provides a use method of the low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device, which comprises the following steps:
step (a): the material is thrown into a material guide pipe from a material inlet, the material guide motor is started at the same time, and the material moves towards a material mixing chamber while being preliminarily mixed in the material guide pipe along with the rotation of the spiral material guide blade until the material enters a material mixing cavity in the material mixing chamber; when the types of the materials exceed three types, the materials are classified and then are fed from different feed inlets, and a plurality of material guide mechanisms work simultaneously to convey various materials to a material mixing cavity in the material mixing chamber;
step (b): after the materials enter a mixing cavity in the mixing chamber, a mixing motor is started, and at the moment, a stirring rod drives a spiral mixing blade to rotate to mix the materials in the mixing chamber;
step (c): when the stirring rod rotates, the driving wheel can drive the driven wheel to rotate in the gear ring, so that the material turning rod drives the material turning blades to turn the materials at the edge in the mixing chamber towards the middle;
step (d): when the material turning rod rotates around the driving wheel, the material turning blades can rotate under the resistance of the materials, so that the material turning blades can scrape the materials on the side wall of the mixing chamber and cannot be trapped in the viscous materials;
a step (e): after the materials are mixed, the gate valve is opened, and the materials are guided out through the discharge hopper under the action of gravity.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the cable material mixing preparation device, materials in the mixing chamber can be uniformly mixed through the spiral mixing mechanism and the material turning mechanism matched with the spiral mixing mechanism, meanwhile, the material turning mechanism runs along the inner wall of the mixing chamber, and materials at the edge can be turned towards the middle, so that the mixing efficiency and effect are further improved;
2. the cable material mixing preparation device can be used for mixing various materials at the same time, particularly when the types of the materials exceed three types, the materials are classified and then put into different feed inlets, and the plurality of material guide mechanisms work at the same time to convey the various materials to a material mixing cavity in the material mixing chamber; thereby saving a large amount of material guiding time and improving the material mixing efficiency of the whole mixing preparation device.
Drawings
FIG. 1 is a schematic structural diagram of a mixing and preparing apparatus for low-smoke low-halogen flame-retardant polyolefin cable material provided by the present invention;
FIG. 2 is a schematic view of the internal structure of a mixing and preparing apparatus for low-smoke low-halogen flame-retardant polyolefin cable material provided by the present invention;
FIG. 3 is a cross-sectional view of a mixing and preparing apparatus for low-smoke low-halogen flame-retardant polyolefin cable material provided by the present invention;
FIG. 4 is a schematic view of the mixing chamber of the mixing preparation device for low-smoke low-halogen flame-retardant polyolefin cable material provided by the present invention;
FIG. 5 is a schematic view of the internal structure of the mixing chamber of the mixing preparation device for low-smoke low-halogen flame-retardant polyolefin cable material provided by the invention;
FIG. 6 is a schematic position diagram of a spiral mixing mechanism and a material-turning mechanism in a mixing chamber of the mixing preparation device for low-smoke low-halogen flame-retardant polyolefin cable materials provided by the invention;
FIG. 7 is a cross-sectional view of the position of a spiral mixing mechanism and a material turning mechanism in a mixing chamber of the mixing preparation device for low-smoke low-halogen flame-retardant polyolefin cable materials provided by the invention.
In the figure: 1. a mixing chamber; 2. a material guiding mechanism; 3. a spiral mixing mechanism; 4. a material turning mechanism; 5. a mixing motor; 6. a driving wheel; 7. a driven wheel; 8. a ring gear; 9. a discharge hopper; 10. a gate valve; 201. a material guide pipe; 202. a spiral material guiding assembly; 203. a feed inlet; 204. a material guiding motor; 301. a stirring rod; 302. a helical mixing blade; 401. a material turning rod; 402. and (5) turning over the blades.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example one
The invention provides a low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device, which comprises a mixing chamber 1 and a plurality of material guide mechanisms 2, and is shown in figures 1-5; the plurality of material guide mechanisms 2 are communicated with the material mixing cavity in the material mixing chamber 1; so that various materials can be respectively conveyed into the mixing chamber 1 through the material guide mechanism 2 to be mixed; the spiral mixing mechanism 3 is arranged at the center of the mixing chamber 1 and used for stirring various materials in the mixing chamber 1, the material turning mechanism 4 is arranged at the edge of the mixing chamber 1, and the material turning mechanism 4 rotates along the inner wall of the mixing chamber 1 and can turn the materials at the edge to the middle.
Specifically, referring to fig. 6 and 7, the spiral mixing mechanism 3 includes a stirring rod 301 and a spiral mixing blade 302 arranged along the length direction of the stirring rod 301, and one end of the stirring rod 301 passes through and is rotatably connected to the mixing chamber 1; and the end part of the stirring rod 301 penetrating through the mixing chamber 1 is connected with a mixing motor 5, and the stirring rod 301 and the spiral mixing blade 302 are driven by the mixing motor 5 to rotate in the mixing chamber 1.
In some embodiments, a bearing is disposed at the center of the mixing chamber 1, and the stirring rod 301 passes through the center of the bearing and is in interference fit with the inner wall of the bearing, so that the stirring rod 301 can rotate in the mixing chamber 1.
Specifically, the material turning mechanism 4 comprises a material turning rod 401 and a plurality of material turning blades 402 arranged along the length direction of the material turning rod 401, and the material turning blades 402 rotate along the inner wall of the material mixing chamber 1 along with the material turning rod 401, and can turn the material on the inner edge of the material mixing chamber 1 towards the middle.
Further, a driving wheel 6 is mounted at the top of the stirring rod 301, and the driving wheel 6 is fixedly connected with the stirring rod 301, so that the driving wheel 6 rotates along with the stirring rod 301 under the action of the mixing motor 5; the top of the material turning rod 401 is provided with a driven wheel 7 engaged with the driving wheel 6, and the driven wheel 7 rotates around the driving wheel 6 under the action of the driving wheel 6, so that the material turning rod 401 runs along the inner wall of the mixing chamber 1.
Further, a gear ring 8 is further arranged at the top of the mixing chamber 1, one side of the driven wheel 7 is meshed with the driving wheel 6, and the other side of the driven wheel is meshed with the gear ring 8, so that the driven wheel 7 rotates around the driving wheel 6 between the driving wheel 6 and the gear ring 8.
In some embodiments, a rotation groove is formed at the top of the mixing chamber 1, and the diameter of the rotation groove is larger than that of the driving wheel 6, so that the stirring rod 401 can rotate around the driving wheel 6 in the rotation groove.
Specifically, the material turning rod 401 is rotatably connected with the driven wheel 7, so that the material turning rod 401 can rotate around the driving wheel 6 and can also rotate. The material stirring rod 401 and the plurality of material stirring blades 402 rotate along the inner wall of the mixing chamber 1 to stir the material, and meanwhile, the plurality of material stirring blades 402 drive the material stirring rod 401 to rotate under the action of resistance, so that the stirring effect of the material stirring mechanism 4 is further improved.
In some embodiments, the material turning rod 401 is rotatably connected with the driven wheel 7 through a bearing, so that the material turning rod 401 can rotate, and a damping block is further disposed on the material turning rod 401, and the damping block is used for providing a certain resistance to the rotation of the material turning rod 401, so that the plurality of material turning blades 402 cannot be trapped in the viscous material.
In some embodiments, the plurality of turning blades 402 are flexible blades, and the turning blades 402 are in contact with the inner wall of the mixing chamber 1, so that the turning blades 402 can scrape off the materials adhered to the inner wall of the mixing chamber 1.
Specifically, please refer to fig. 1 to 3, the material guiding mechanism 2 includes a material guiding pipe 201, and a spiral material guiding assembly 202 and a material inlet 203 which are disposed in the material guiding pipe 201, wherein one end of the material guiding pipe 201 connected to the material mixing chamber 1 is communicated with the material mixing cavity inside the material mixing chamber 1, so that the material enters the material mixing cavity inside the material mixing chamber 1 along the material guiding pipe 201 under the action of the spiral material guiding assembly 202; the feeding port 203 is opened on the side wall of the material guiding pipe 201 for feeding.
Further, the spiral material guiding assembly 202 includes a material guiding rod and spiral material guiding blades arranged along the length direction of the material guiding rod, one end of the material guiding rod, which is far away from the mixing chamber 1, is connected with a material guiding motor 204, and the material guiding rod and the spiral material guiding blades are driven to rotate by the material guiding motor 204.
Specifically, referring to fig. 2 or fig. 6, a discharge hopper 9 is arranged at the bottom of the mixing chamber 1 for discharging the uniformly mixed materials; a gate valve 10 is arranged between the mixing chamber 1 and the discharging hopper 9 so as to control the on-off between the mixing chamber 1 and the discharging hopper 9.
Example two
The invention also provides a use method of the low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device, which comprises the following steps:
a step (a): materials are thrown into the material guide pipe 201 from the material inlet 203, the material guide motor 204 is started at the same time, and the materials move towards the material mixing chamber 1 while being preliminarily mixed in the material guide pipe 201 along with the rotation of the spiral material guide blade until the materials enter the material mixing cavity in the material mixing chamber 1; when the types of the materials exceed three types, a large amount of feeding time is wasted by sequentially feeding the materials, and the materials at the early stage need to wait after entering the mixing chamber 1, so that the mixing efficiency is greatly influenced, the materials are classified and then fed from different feed inlets 203, the plurality of material guide mechanisms 2 work simultaneously, and the materials are conveyed to the mixing cavity in the mixing chamber 1; thereby saving a large amount of material guiding time and improving the material mixing efficiency of the whole mixing preparation device;
a step (b): after the materials enter the mixing cavity in the mixing chamber 1, the mixing motor 5 is started, and at the moment, the stirring rod 301 drives the spiral mixing blade 302 to rotate to mix the materials in the mixing chamber 1;
step (c): when the stirring rod 301 rotates, the driving wheel 6 can drive the driven wheel 7 to rotate in the gear ring 8, so that the material turning rod 401 drives the material turning blade 402 to turn the material at the inner edge of the mixing chamber 1 towards the middle, and the material mixing effect is further improved;
step (d): when the material turning rod 401 rotates around the driving wheel 6, the material turning blades 402 can rotate under the resistance of the materials, so that the material turning blades 402 can scrape the materials on the side wall of the mixing chamber 1 and cannot be trapped in the viscous materials;
a step (e): after the materials are mixed, the gate valve 10 is opened, and the materials are guided out through the discharge hopper 9 under the action of gravity.
The cable material mixing preparation device can be used for mixing multiple materials at the same time, particularly when the types of the materials exceed three types, the materials are classified and then are fed from different feed inlets, and the multiple material guide mechanisms work simultaneously to convey the multiple materials to the material mixing cavity in the material mixing chamber; thereby saving a large amount of material guiding time and improving the material mixing efficiency of the whole mixing preparation device.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims (10)

1. The device for mixing and preparing the low-smoke low-halogen flame-retardant polyolefin cable material is characterized by comprising a mixing chamber (1) and a plurality of material guide mechanisms (2); the material guide mechanisms (2) are communicated with a material mixing cavity in the material mixing chamber (1); so that various materials can be respectively conveyed into the mixing chamber (1) through the material guide mechanism (2) to be mixed;
the material mixing device is characterized in that a spiral material mixing mechanism (3) is arranged at the center of the material mixing chamber (1) and is used for stirring various materials in the material mixing chamber (1), a material turning mechanism (4) is arranged at the edge of the material mixing chamber (1), and the material turning mechanism (4) runs along the inner wall of the material mixing chamber (1) and can turn the materials at the edge towards the middle.
2. The mixing preparation device of the low-smoke low-halogen flame-retardant polyolefin cable material according to claim 1, wherein the spiral mixing mechanism (3) comprises a stirring rod (301) and a spiral mixing blade (302) arranged along the length direction of the stirring rod (301), and one end of the stirring rod (301) penetrates through and is rotatably connected with the mixing chamber (1); and the end part of the mixing chamber (1) is connected with a mixing motor (5) through which the stirring rod (301) penetrates, and the stirring rod (301) and the spiral mixing blade (302) are driven by the mixing motor (5) to rotate in the mixing chamber (1).
3. The mixing preparation device of the low-smoke low-halogen flame-retardant polyolefin cable material as claimed in claim 2, wherein the material turning mechanism (4) comprises a material turning rod (401) and a plurality of material turning blades (402) arranged along the length direction of the material turning rod (401), and the material turning blades (402) move along the inner wall of the mixing chamber (1) along with the material turning rod (401) and can turn the material at the inner edge of the mixing chamber (1) towards the middle.
4. The mixing and preparing device of the low-smoke low-halogen flame-retardant polyolefin cable material according to claim 3, characterized in that a driving wheel (6) is installed on the top of the stirring rod (301), and the driving wheel (6) is fixedly connected with the stirring rod (301) so that the driving wheel (6) rotates along with the stirring rod (301) under the action of the mixing motor (5);
the top of the material turning rod (401) is provided with a driven wheel (7) meshed with the driving wheel (6), and the driven wheel (7) rotates around the driving wheel (6) under the action of the driving wheel (6) so that the material turning rod (401) runs along the inner wall of the material mixing chamber (1).
5. The mixing preparation device of low-smoke low-halogen flame-retardant polyolefin cable material according to claim 4, characterized in that a gear ring (8) is further arranged on the top of the mixing chamber (1), one side of the driven wheel (7) is engaged with the driving wheel (6), and the other side is engaged with the gear ring (8), so that the driven wheel (7) rotates around the driving wheel (6) between the driving wheel (6) and the gear ring (8).
6. The mixing preparation device of low-smoke low-halogen flame-retardant polyolefin cable material according to claim 4, characterized in that the material turning rod (401) is rotatably connected with the driven wheel (7) so that the material turning rod (401) can rotate while rotating around the driving wheel (6).
7. The mixing preparation device of low-smoke low-halogen flame-retardant polyolefin cable material according to claim 3, characterized in that a plurality of said turning blades (402) are flexible blades, and said turning blades (402) are in contact with the inner wall of said mixing chamber (1), so that said turning blades (402) can scrape off the material adhered to the inner wall of said mixing chamber (1).
8. The device for preparing cable materials of low smoke low halogen flame retardant polyolefin according to claim 1, wherein the material guiding mechanism (2) comprises a material guiding pipe (201), and a spiral material guiding assembly (202) and a material inlet (203) which are arranged in the material guiding pipe (201), one end of the material guiding pipe (201) connected with the material mixing chamber (1) is communicated with the material mixing cavity inside the material mixing chamber (1), so that the materials enter the material mixing cavity inside the material mixing chamber (1) along the material guiding pipe (201) under the action of the spiral material guiding assembly (202);
the spiral material guiding assembly (202) comprises a material guiding rod and spiral material guiding blades arranged along the length direction of the material guiding rod, one end, far away from the mixing chamber (1), of the material guiding rod is connected with a material guiding motor (204), and the material guiding rod and the spiral material guiding blades are driven to rotate through the material guiding motor (204);
the feeding hole (203) is formed in the side wall of the material guide pipe (201) and used for feeding.
9. The mixing preparation device of low-smoke low-halogen flame-retardant polyolefin cable material according to claim 1, characterized in that a discharge hopper (9) is arranged at the bottom of the mixing chamber (1) for guiding out the uniformly mixed material; a gate valve (10) is arranged between the mixing chamber (1) and the discharging hopper (9) so as to control the on-off between the mixing chamber (1) and the discharging hopper (9).
10. The use method of the low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device as claimed in any one of claims 1 to 9, characterized by comprising the following steps:
step (a): the method comprises the steps that materials are fed into a material guide pipe (201) from a feeding hole (203), a material guide motor (204) is started at the same time, and the materials move towards a material mixing chamber (1) while being primarily mixed in the material guide pipe (201) along with the rotation of a spiral material guide blade until the materials enter a material mixing cavity in the material mixing chamber (1); when the types of the materials exceed three types, the materials are classified and then are fed from different feeding ports (203), a plurality of material guide mechanisms (2) work simultaneously, and the materials are conveyed to a mixing cavity in the mixing chamber (1);
a step (b): after materials enter a mixing cavity in the mixing chamber (1), a mixing motor (5) is started, and at the moment, a stirring rod (301) drives a spiral mixing blade (302) to rotate to mix the materials in the mixing chamber (1);
step (c): when the stirring rod (301) rotates, the driving wheel (6) can drive the driven wheel (7) to rotate in the gear ring (8), so that the material turning rod (401) drives the material turning blade (402) to turn the material on the inner edge of the mixing chamber (1) towards the middle;
step (d): when the material turning rod (401) rotates around the driving wheel (6), the material turning blades (402) can rotate under the resistance of the materials, so that the material turning blades (402) can scrape the materials on the side wall of the mixing chamber (1) and cannot be trapped in the viscous materials;
a step (e): after the materials are mixed, the gate valve (10) is opened, and the materials are led out through the discharge hopper (9) under the action of gravity.
CN202210536228.7A 2022-05-17 2022-05-17 Low-smoke low-halogen flame-retardant polyolefin cable material mixing preparation device and use method thereof Withdrawn CN114932638A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115648587A (en) * 2022-11-24 2023-01-31 江西美园电缆集团有限公司 Production equipment and production method of low-halogen low-smoke flame-retardant cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115648587A (en) * 2022-11-24 2023-01-31 江西美园电缆集团有限公司 Production equipment and production method of low-halogen low-smoke flame-retardant cable

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