CN215242724U

CN215242724U - Energy-saving high finish PE tubular product continuous extrusion molding device

Info

Publication number: CN215242724U
Application number: CN202121625458.8U
Authority: CN
Inventors: 侯靖; 方剑
Original assignee: Kunming Sidon Pipeline Manufacturing Co ltd
Current assignee: Kunming Sidon Pipeline Manufacturing Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2021-12-21
Anticipated expiration: 2031-07-16

Abstract

The application discloses energy-saving high finish PE tubular product continuous extrusion molding device includes: the device comprises a driving assembly, a heating cavity, a forming cavity, a cooling water jacket, a discharging hopper and a heat regeneration sleeve; the driving assembly is arranged on the first end surface of the heating cavity and is in driving connection with the extrusion screw rod in the heating cavity; a discharge hole is formed in the second end face of the heating cavity and communicated with a first end feed hole of the forming cavity; an extrusion opening is arranged on the second end surface of the molding cavity, and a cooling water jacket is sleeved on the extrusion opening; the secondary drying can be carried out on polyethylene particles to be discharged, the heat energy utilization rate is improved, and the influence on the product quality caused by moisture regain of residual materials in the discharging hopper can be avoided.

Description

Energy-saving high finish PE tubular product continuous extrusion molding device

Technical Field

The application relates to the technical field of high polymer material pipe production, in particular to an energy-saving high-finish PE pipe continuous extrusion molding device.

Background

The PE pipe has the characteristics of strong flexibility and corrosion resistance, and is widely applied to a liquid conveying link. The existing PE pipe is formed by heating and adjusting raw material particles, extruding and melting the raw material particles through a screw rod, and extruding a polyethylene melt into a mold cavity to cool.

However, because the temperature of the polyethylene melt in a molten state is about 220 ℃, the pipe at the discharge port is easy to deform due to overhigh temperature and overlarge flexibility during discharging, the deformed part can only be taken out as waste, and the loss of raw materials is increased while the rejection rate is increased.

Meanwhile, in the melting process, heat in the heating cavity is easy to radiate outwards and is directly emptied, the production environment temperature is not increased, and energy waste is also caused.

SUMMERY OF THE UTILITY MODEL

The application provides an energy-saving high-finish PE pipe continuous extrusion molding device for solving the technical problems.

The application provides a continuous extrusion moulding device of energy-saving high finish PE tubular product includes: the device comprises a driving assembly, a heating cavity, a forming cavity, a cooling water jacket, a discharging hopper and a heat regeneration sleeve;

the driving assembly is arranged on the first end surface of the heating cavity and is in driving connection with the extrusion screw rod in the heating cavity; a discharge hole is formed in the second end face of the heating cavity and communicated with a first end feed hole of the forming cavity; an extrusion opening is arranged on the second end surface of the molding cavity, and a cooling water jacket is sleeved on the extrusion opening;

the heat regeneration sleeve is sleeved on the outer wall of the heating cavity;

the feeding hopper is arranged on the top surface of the first end of the heating cavity and is communicated with the inside of the heating cavity;

the lower hopper includes: the device comprises a blanking through pipe, a first motor, a rotating shaft, a threaded blade, a vent plate and a vent hole; a discharging through pipe is arranged on the bottom surface of the discharging hopper, and the discharging hopper is communicated with the heating cavity through the discharging through pipe; the first end surface of the heat-returning sleeve is provided with an air inlet, the second end surface of the heat-returning sleeve is provided with an air outlet, and the air outlet of the heat-returning sleeve is communicated with a pipeline on the side wall of the blanking through pipe; an air pump is arranged on a pipeline of the air outlet of the heat recovery sleeve communicated with the blanking through pipe;

a first motor is arranged on the outer side wall of the top of the discharging hopper and is in driving connection with one end of the rotating shaft; the other end of the rotating shaft extends towards the top surface of the blanking through pipe in an inclined way; the outer side wall of the rotating shaft is provided with a threaded blade; the top surface of the blanking hopper is provided with a vent plate, and the vent plate is provided with a plurality of vent holes;

and circulating cooling water is introduced into the cooling water jacket.

Preferably, the method comprises the following steps: a water storage tank and a water pump; the water outlet of the water storage tank is communicated with the liquid inlet pipeline of the cooling water jacket; the water inlet of the water storage tank is communicated with the liquid outlet pipeline of the cooling water jacket; the water pump is arranged on a pipeline which is communicated with the water outlet of the water storage tank and the liquid inlet of the cooling water jacket.

Preferably, the heat recovery jacket comprises: the heat insulation material comprises a first heat insulation material layer, a second heat insulation material layer and a shell; a first heat-insulating material layer is coated on the inner side wall of the shell; the second heat-insulating material layer is arranged on the inner side wall of the first heat-insulating material layer.

Preferably, the heating chamber comprises: a screw and an extrusion blade; the screw is arranged in the heating cavity along the central shaft of the heating cavity; the extrusion blade winding screw is arranged on the outer wall of the screw; the first end of the screw rod extends out of the first end of the heating cavity and is in driving connection with the driving assembly; the second end of the screw extends out of the second end of the heating cavity and is rotatably connected with the heating cavity.

Preferably, the driving assembly includes: a driven wheel, a belt, a second motor and a driving wheel; the driving wheel is in driving connection with the second motor; the driving wheel is in transmission connection with the driven wheel through a belt; the driven wheel is sleeved on the first end of the screw rod. The screw rod can be driven by the second motor according to the arrangement.

Preferably, the method comprises the following steps: and the air inlet pipe is arranged on the side wall of the lower part of the blanking through pipe and is communicated with an air outlet pipeline of the heat recovery sleeve.

The beneficial effects that this application can produce include:

1) the application provides an energy-saving high finish PE tubular product extrusion moulding device in succession, establish the backheat cover through the cover on heating chamber lateral wall, and set up the multilayer heat preservation on the side wall of the backheat cover, on the one hand, can improve heat energy utilization efficiency, reduce the outside radiant quantity of heat energy, set up the outlet duct on the one side of backheat cover sets up another terminal surface of intake pipe simultaneously, and the gas after will preheating passes through the pipe connection backward flow and gets into down in the hopper, treat unloading polyethylene granule and carry out the secondary and dry, when improving heat utilization, can avoid down in the hopper after the residual material conditioning, influence product quality.

2) The application provides an energy-saving high finish PE tubular product extrusion moulding device in succession through set up the water-cooling lantern ring on extruding the discharge end in chamber to let in the circulating water in the water-cooling lantern ring, thereby effectively reduce from the tubular product port temperature of extruding the chamber ejection of compact, avoid tubular product because length overlength or dead weight, take place to warp in discharge end department, improve product quality, reduce the waste product proportion.

Drawings

FIG. 1 is a schematic view of an energy-saving high-finish PE pipe continuous extrusion molding device provided by the present application;

fig. 2 is a schematic sectional structural view of a main view of a blanking mechanism provided in the present application;

FIG. 3 is a schematic side view of the driving wheel and driven wheel connection provided by the present application;

FIG. 4 is a side view schematic of a discharge end of a mold cavity provided herein;

illustration of the drawings:

115. feeding a hopper; 116. blanking through pipes; 117. an air inlet pipe; 12. a stirring rod; 111. a first motor; 121. a rotating shaft; 122. a threaded blade; 123. a frame; 113. a breather plate; 112. a vent hole; 21. a driven wheel; 22. a belt; 23. a second motor; 231. a motor shaft; 232. a driving wheel; 212. a heating cavity; 215. an air pump; 211. a heat recovery sleeve; 213. a screw; 214. extruding the blade; 25. a molding cavity; 251. a water storage tank; 252. a water pump; 253. a cooling water jacket; 256. an extrusion port.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "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 in specific cases to those skilled in the art.

Referring to fig. 1-4, the application provides an energy-saving high finish degree PE tubular product continuous extrusion molding device, includes: the device comprises a driving assembly, a heating cavity 212, a forming cavity 25, a cooling water jacket 253, a discharging hopper 115 and a heat return jacket 211;

the driving assembly is arranged on the first end surface of the heating cavity 212 and is in driving connection with the extrusion screw 213 in the heating cavity 212; a discharge hole is formed in the second end surface of the heating cavity 212 and communicated with a first end feed hole of the forming cavity 25; an extrusion port 256 is arranged on the second end surface of the molding cavity 25, and a cooling water jacket 253 is sleeved on the extrusion port 256;

the heat recovery sleeve 211 is sleeved on the outer wall of the heating cavity 212;

the feeding hopper 115 is vertically arranged on the top surface of the first end of the heating cavity 212, and is communicated with the inside of the heating cavity 212;

the lower hopper 115 includes: a blanking through pipe 116, a first motor 111, a rotating shaft 121, a threaded blade 122, a vent plate 113 and a vent hole 112; a discharging through pipe 116 is arranged on the bottom surface of the discharging hopper 115, and the discharging hopper 115 is communicated with the heating cavity 212 through the discharging through pipe 116; a first end face of the heat recovery sleeve 211 is provided with an air inlet, a second end face of the heat recovery sleeve 211 is provided with an air outlet, and the air outlet of the heat recovery sleeve 211 is communicated with a pipeline on the side wall of the feeding through pipe 116; an air pump 215 is arranged on a pipeline where the air outlet of the heat return sleeve 211 is communicated with the blanking through pipe 116;

the outer side wall of the top of the discharging hopper 115 is provided with a first motor 111, and the first motor 111 is in driving connection with one end of a rotating shaft 121; the other end of the rotating shaft 121 extends obliquely to the top surface of the blanking through pipe 116; the outer side wall of the rotating shaft 121 is provided with a thread blade 122; the top surface of the lower hopper 115 is provided with an air vent plate 113, and the air vent plate 113 is provided with a plurality of air vents 112;

circulating cooling water is introduced into the cooling water jacket 253.

The through pipe is provided with the rotating shaft 121 and the threaded blades 122, so that the material blanking smoothness can be improved, the blockage of materials at the blanking through pipe 116 can be avoided, meanwhile, the heat radiated outwards by the heating cavity 212 is recycled through the heat recycling sleeve 211 and then is introduced into the blanking channel, on one hand, the materials in the hopper can be dried again by using the waste heat, so that the materials remained in the blanking hopper 115 can be dried without being moved out; on the other hand, the fluffy degree of granule resin material can also be increased to the hot-air that flows back, further raises the efficiency smoothness nature, avoids the material to block up in feed opening department.

The back flow hot air lets in the back in hopper 115 down, and hot-air flows out from aeration board 113, owing to set up air vent 112, can increase hot-air retention time in hopper 115 down, improves drying efficiency.

Through set up cooling jacket in the department of extruding 256, can effectively cool off discharge gate department tubular product, avoid tubular product to take place micro-deformation in the discharge gate, reduce the surface smoothness of tubular product. The high molecular polyethylene particle material is fed from the feeding through pipe 116 into the heating cavity 212 under the pushing of the rotating shaft 121; after being heated and pressurized in the heating chamber 212, the molten material is extruded by the screw 213 to move toward the molding chamber 25, and then enters the cavity of the molding chamber 25 under pressure extrusion to move and extrude the molded tube toward the extrusion port 256. After the extruded pipe is cooled at the extrusion opening 256, the extruded pipe enters a subsequent plastic stage, for example, a working section such as extrusion roll forming or cooling forming can be adopted, and the specific working section can be selected according to the diameter of the pipe, which will not be described in detail herein.

The heating cavity 212, other parts of the molding cavity 25, the heating control part and the pressure control part are all arranged according to the conventional common polyethylene extrusion molding structure, and the description is omitted.

Preferably, the method comprises the following steps: a water storage tank 251 and a water pump 252; the water outlet of the water storage tank 251 is communicated with the liquid inlet pipeline of the cooling water jacket 253; the water inlet of the water storage tank 251 is communicated with the liquid outlet pipeline of the cooling water jacket 253; the water pump 252 is disposed on a pipeline connecting the water outlet of the water storage tank 251 and the liquid inlet of the cooling water jacket 253.

Preferably, the heat recovery jacket 211 includes: the heat insulation material comprises a first heat insulation material layer, a second heat insulation material layer and a shell; a first heat-insulating material layer is coated on the inner side wall of the shell; the second heat-insulating material layer is arranged on the inner side wall of the first heat-insulating material layer. According to the arrangement, the outward radiation heat of the heating cavity 212 can be further reduced, the hot air heating efficiency is improved, meanwhile, the hot air temperature is effectively improved, and the utilization rate of the outward radiation heat of the heating cavity 212 is improved.

Preferably, the heating cavity 212 includes: a screw 213 and an extrusion blade 214; the screw 213 is arranged in the heating cavity 212 along the central axis of the heating cavity 212; the extrusion blade 214 is wound around the screw 213 and is disposed on the outer wall of the screw 213; a first end of the screw 213 extends out of a first end of the heating cavity 212 and is drivingly connected to the drive assembly; a second end of the screw 213 extends out of a second end of the heating chamber 212 and is rotatably coupled to the heating chamber 212.

The particulate material is thus arranged to melt rapidly to form a polymer melt under the action of the extrusion and heating of the screw 213.

Preferably, the drive assembly comprises: a driven wheel 21, a belt 22, a second motor 23 and a driving wheel 232; the driving wheel 232 is in driving connection with the second motor 23; the driving wheel 232 is in transmission connection with the driven wheel 21 through a belt 22; the driven wheel 21 is sleeved on the first end of the screw rod 213. The screw 213 can be driven by the second motor 23.

In an embodiment, the motor shaft 231 is disposed at the driving end of the second motor 23, inserted into the central axis of the driving wheel 232, and connected to the driving wheel 232, and can be connected through a coupling, so as to drive the driving wheel 232.

Preferably, the method comprises the following steps: and the air inlet pipe 117 is arranged on the side wall of the lower part of the blanking through pipe 116 and is communicated with an air outlet pipeline of the heat return sleeve 211. The introduction of hot air from this location can extend the travel distance of the gas within the hopper 115 and its through-pipe.

In one embodiment, the stir bar 12 comprises: a frame 123; the frame 123 is arranged on the inner side wall of the top of the lower hopper 115; the first motor 111 is mounted on an outer side wall of the frame 123, and a rotating shaft 121 of the first motor 111 is inserted into the frame 123 and is in driving connection with the rotating shaft 121. The first end of the rotating shaft 121 is mounted on the bottom surface of the frame 123. This arrangement provides a space and a position for mounting the transmission member of the rotary shaft 121.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an energy-saving high finish PE tubular product continuous extrusion molding device which characterized in that includes: the device comprises a driving assembly, a heating cavity (212), a molding cavity (25), a cooling water jacket (253), a discharging hopper (115) and a heat return sleeve (211);

the driving assembly is arranged on the first end surface of the heating cavity (212) and is in driving connection with the extrusion screw (213) in the heating cavity (212); a discharge hole is formed in the second end surface of the heating cavity (212) and is communicated with a first end feed hole of the forming cavity (25); an extrusion port (256) is arranged on the second end surface of the molding cavity (25), and a cooling water jacket (253) is sleeved on the extrusion port (256);

the heat-returning sleeve (211) is sleeved on the outer wall of the heating cavity (212);

the feeding hopper (115) is vertically arranged on the top surface of the first end of the heating cavity (212) and communicated with the heating cavity (212);

the lower hopper (115) comprises: the device comprises a blanking through pipe (116), a first motor (111), a rotating shaft (121), a threaded blade (122), a ventilation plate (113) and a ventilation hole (112); a blanking through pipe (116) is arranged on the bottom surface of the blanking hopper (115), and the blanking hopper (115) is communicated with the heating cavity (212) through the blanking through pipe (116); a first end face of the heat recovery sleeve (211) is provided with an air inlet, a second end face of the heat recovery sleeve (211) is provided with an air outlet, and the air outlet of the heat recovery sleeve (211) is communicated with a pipeline on the side wall of the blanking through pipe (116); an air pump (215) is arranged on a pipeline where an air outlet of the heat recovery sleeve (211) is communicated with the blanking through pipe (116);

a first motor (111) is arranged on the outer side wall of the top of the discharging hopper (115), and the first motor (111) is in driving connection with one end of a rotating shaft (121); the other end of the rotating shaft (121) extends obliquely towards the top surface of the blanking through pipe (116); the outer side wall of the rotating shaft (121) is provided with a threaded blade (122); the top surface of the lower hopper (115) is provided with an air vent plate (113), and the air vent plate (113) is provided with a plurality of air vents (112);

circulating cooling water is introduced into the cooling water jacket (253).

2. The energy-saving high-finish PE pipe continuous extrusion molding device according to claim 1, which comprises: a water storage tank (251) and a water pump (252); a water outlet of the water storage tank (251) is communicated with a liquid inlet pipeline of the cooling water jacket (253); a water inlet of the water storage tank (251) is communicated with a liquid outlet pipeline of the cooling water jacket (253); the water pump (252) is arranged on a pipeline which is communicated with the water outlet of the water storage tank (251) and the liquid inlet of the cooling water jacket (253).

3. The energy-saving high-finish PE pipe continuous extrusion molding device according to claim 1, wherein the heat-returning jacket (211) comprises: the heat insulation material comprises a first heat insulation material layer, a second heat insulation material layer and a shell; a first heat-insulating material layer is coated on the inner side wall of the shell; the second heat-insulating material layer is arranged on the inner side wall of the first heat-insulating material layer.

4. The energy-saving high-finish PE pipe continuous extrusion molding apparatus according to claim 1, wherein the heating chamber (212) comprises: a screw (213) and an extrusion blade (214); the screw (213) is arranged in the heating cavity (212) along the central shaft of the heating cavity (212); the extruding blade (214) is wound on the screw rod (213) and is arranged on the outer wall of the screw rod (213); a first end of the screw (213) extends out of a first end of the heating cavity (212) and is in driving connection with the driving component; the second end of the screw (213) extends out of the second end of the heating chamber (212) and is rotatably connected with the heating chamber (212).

5. The apparatus of claim 1, wherein the driving assembly comprises: a driven wheel (21), a belt (22), a second motor (23) and a driving wheel (232); the driving wheel (232) is in driving connection with the second motor (23); the driving wheel (232) is in transmission connection with the driven wheel (21) through a belt (22); the driven wheel (21) is sleeved on the first end of the screw rod (213); the screw (213) can be driven by the second motor (23) according to the arrangement.

6. The energy-saving high-finish PE pipe continuous extrusion molding device according to claim 1, which comprises: and the air inlet pipe (117) is arranged on the side wall of the lower part of the blanking through pipe (116) and is communicated with an air outlet pipeline of the heat recovery sleeve (211).