Extruder for polyvinyl butyral production

Abstract

The utility model discloses an extruder for polyvinyl butyral production, which comprises a base, the top of the base is provided with a stirring tank, the top of the base is fixedly provided with an extrusion cylinder positioned below the stirring tank, the bottom of the stirring tank is provided with a discharge pipe, the bottom of the discharge pipe is fixedly installed with one end of the top of the extrusion cylinder, and the other end of the discharge pipe is fixedly installed with the other end of the top of the extrusion cylinder. An extrusion mold is fixedly mounted at the other end of the extrusion barrel, a heat preservation assembly wraps the middle of the extrusion barrel, a cooling sleeve wraps the exterior of the extrusion mold, a cooling water tank is fixedly mounted at the top of the heat preservation assembly, a cooling coil pipe is arranged in the cooling sleeve, and a liquid inlet pipe is fixedly mounted at one end of the cooling coil pipe. By arranging the cooling sleeve, the cooled heat-conducting medium flows into the cooling coil through the liquid inlet pipe to continuously cool the extrusion die, and meanwhile, the flowing speed of the heat-conducting medium is controlled through the circulating pump, so that the temperature of the extrusion die is controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to an extruder for the production of polyvinyl butyral. Background Technique

[0002] Polyvinyl butyral (abbreviated as PVB) is obtained by the acetalization reaction of polyvinyl alcohol (abbreviated as PVA) and n-butyraldehyde under the catalysis of inorganic acid. The PVB film prepared from PVB resin, plasticizer and additives is widely used in industries such as automobiles, buildings, and photovoltaics due to its excellent light transmittance, weather resistance, adhesiveness, impact resistance, etc.

[0003] In the process of producing polyvinyl butyral resin, it is often necessary to use an extruder to extrude and shape plastics. The Chinese patent publication number is CN210082354U, which discloses a plastic extruder. The plastic extruder includes a feeding mechanism, a mixing mechanism and a barrel; the feeding mechanism is arranged on one side of the mixing mechanism and is connected to the mixing mechanism. A third screw is arranged in the barrel; a third driving motor for driving the third screw is arranged at one end of the barrel.

[0004] For the prior art similar to the above plastic extruder, the temperature of the raw materials in the barrel is difficult to accurately control, resulting in poor melting and solidification of plastic particles and affecting the production quality of plastic products. Therefore, there is still room for improvement.

[0005] Therefore, we propose an extruder for the production of polyvinyl butyral. Content of the Utility Model

[0006] The purpose of the utility model is to provide an extruder for the production of polyvinyl butyral to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present utility model provides the following technical solutions: An extruder for the production of polyvinyl butyral, comprising a base, on the top of the base is provided a stirring tank, fixedly installed on the top of the base is an extrusion barrel located below the stirring tank, at the bottom of the stirring tank is provided a discharge pipe, the bottom of the discharge pipe is fixedly installed with one end of the top of the extrusion barrel, the other end of the extrusion barrel is fixedly installed with an extrusion die, the middle part of the extrusion barrel is wrapped with a heat preservation component, the outside of the extrusion die is wrapped with a cooling sleeve, fixedly installed on the top of the heat preservation component is a cooling water tank, inside the cooling sleeve is provided with a cooling coil, one end of the cooling coil is fixedly installed with a liquid inlet pipe, the other end of the cooling coil is fixedly installed with a liquid outlet pipe, both ends of the cooling water tank penetrate and are rotatably connected with a rotating sleeve, fixedly installed on the top of the cooling water tank is a driving motor, in the middle of the liquid inlet pipe is provided a circulating pump fixedly installed on the front of the cooling water tank, the other end of the liquid inlet pipe is hermetically and rotationally communicated with one rotating sleeve, the other end of the liquid outlet pipe is hermetically and rotationally communicated with the other rotating sleeve, the other end of the rotating sleeve is provided with a heat exchanger located inside the cooling water tank, the output end of the driving motor is in transmission connection with one rotating sleeve, at the bottom on one side of the cooling water tank is provided a cooling water inlet, and on the other side of the top of the cooling water tank is provided a cooling water outlet.

[0008] Optionally, fixedly installed on the top of the base is an extrusion motor, the output end of the extrusion motor is fixedly installed with one end of the rotating shaft inside the extrusion barrel, and the extrusion barrel and the output shaft of the extrusion motor are coaxially arranged.

[0009] Optionally, the heat preservation component includes a heat preservation sleeve wrapped around the middle part of the extrusion barrel, on the front and back sides inside the heat preservation sleeve are provided a number of uniformly distributed installation grooves, and fixedly installed inside the installation grooves are heating tiles.

[0010] Optionally, the heat exchanger includes two symmetrically arranged hollow discs and a number of circular tubes communicated with the opposite surfaces of the two hollow discs, the two rotating sleeves are respectively fixedly installed with the middle parts of the two hollow discs, and the rotating sleeves and the heat exchanger are coaxially arranged.

[0011] Optionally, the output end of the driving motor is fixedly installed with a synchronous pulley, and fixedly installed in the middle of one rotating sleeve is another synchronous pulley located outside the cooling water tank, and the two synchronous pulleys are in transmission connection through a synchronous belt.

[0012] Optionally, the inside of the cooling coil, the liquid inlet pipe, the liquid outlet pipe and the heat exchanger is filled with a heat conducting medium, and the heat conducting medium is one of water, propylene glycol, triethanolamine, and polymethacrylic acid.

[0013] Optionally, the cooling water inlet and the cooling water outlet are respectively connected with an external cooling water circulation mechanism.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] For the extruder used in the production of polyvinyl butyral, by setting a cooling jacket, the heat of the extrusion die is conducted to the heat-conducting medium in the cooling coil through the cooling jacket, and is transported to the inside of the heat exchanger through the liquid outlet pipe. At the same time, the cooling water in the cooling water tank is circulated through the cooling water inlet and the cooling water outlet, so that the cooling water exchanges heat with the heat-conducting medium inside the heat exchanger. At the same time, the driving motor drives the heat exchanger and the rotating sleeve to rotate through the synchronous pulley and the synchronous belt, improving the heat exchange efficiency of the heat exchanger. The cooled heat-conducting medium flows back into the inside of the cooling coil through the liquid inlet pipe to continuously cool the extrusion die. At the same time, the flow rate of the heat-conducting medium is controlled by the circulation pump, thereby controlling the temperature of the extrusion die.

[0016] For the extruder used in the production of polyvinyl butyral, by setting a heat preservation component, the heat preservation sleeve prevents the loss of heat from the extrusion barrel, and the heating tile arranged heats the outside of the extrusion barrel to ensure that the temperature inside the extrusion barrel remains at an appropriate temperature, preventing the polyvinyl butyral inside the extrusion barrel from reducing its fluidity due to too low temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an extruder for the production of polyvinyl butyral according to the present utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the cooling jacket of an extruder for the production of polyvinyl butyral according to the present utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the driving motor of an extruder for the production of polyvinyl butyral according to the present utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the heat preservation component of an extruder for the production of polyvinyl butyral according to the present utility model.

[0021] In the figure: 1, base; 2, stirring tank; 3, extrusion barrel; 4, extrusion motor; 5, discharge pipe; 6, heat preservation component; 61, heat preservation sleeve; 62, installation groove; 63, heating tile; 7, extrusion die; 8, cooling jacket; 9, cooling water tank; 10, cooling coil; 11, liquid inlet pipe; 12, liquid outlet pipe; 13, rotating sleeve; 14, heat exchanger; 15, driving motor; 16, cooling water inlet; 17, cooling water outlet; 18, synchronous pulley; 19, synchronous belt; 20, circulation pump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4 The utility model provides an extruder for producing polyvinyl butyral, comprising a base 1, a stirring tank 2 is arranged on the top of the base 1, an extrusion barrel 3 located below the stirring tank 2 is fixedly installed on the top of the base 1, a discharge pipe 5 is arranged at the bottom of the stirring tank 2, the bottom of the discharge pipe 5 is fixedly installed with one end of the top of the extrusion barrel 3, an extrusion die 7 is fixedly installed at the other end of the extrusion barrel 3, a heat preservation component 6 is wrapped in the middle of the extrusion barrel 3, a cooling sleeve 8 is wrapped on the outside of the extrusion die 7, and a cooling water tank 9 is fixedly installed on the top of the heat preservation component 6. A cooling coil 10 is provided inside the cooling sleeve 8, a liquid inlet pipe 11 is fixedly installed at one end of the cooling coil 10, a liquid outlet pipe 12 is fixedly installed at the other end of the cooling coil 10, a rotating sleeve 13 is rotatably connected to both ends of the cooling water tank 9, a driving motor 15 is fixedly installed on the top of the cooling water tank 9, a circulating pump 20 fixedly installed on the front of the cooling water tank 9 is provided in the middle of the liquid inlet pipe 11, the other end of the liquid inlet pipe 11 is sealed and rotatably connected to a rotating sleeve 13, and the other end of the liquid outlet pipe 12 is sealed and rotatably connected to another rotating sleeve 13 The other end of the rotating sleeve 13 is provided with a heat exchanger 14 located inside the cooling water tank 9, the output end of the driving motor 15 is transmission-connected with a rotating sleeve 13, a cooling water inlet 16 is provided at the bottom of one side of the cooling water tank 9, and a cooling water outlet 17 is provided on the other side of the top of the cooling water tank 9. By providing the cooling sleeve 8, the heat of the extrusion die 7 is transferred to the heat-conducting medium in the cooling coil 10 through the cooling sleeve 8, and is transported to the inside of the heat exchanger 14 through the liquid outlet pipe 12. At the same time, through the cooling water inlet 16 and the cooling water The outlet 17 circulates the cooling water inside the cooling water tank 9, so that the cooling water exchanges heat with the heat-conducting medium inside the heat exchanger 14. At the same time, the driving motor 15 drives the heat exchanger 14 and the rotating sleeve 13 to rotate through the synchronous wheel 18 and the synchronous belt 19, thereby improving the heat exchange efficiency of the heat exchanger 14. The cooled heat-conducting medium flows into the cooling coil 10 again through the liquid inlet pipe 11, continuously cooling the extrusion die 7. At the same time, the flow rate of the heat-conducting medium is controlled by the circulating pump 20, thereby controlling the temperature of the extrusion die 7.

[0024] An extrusion motor 4 is fixedly mounted on the top of the base 1 , and an output end of the extrusion motor 4 is fixedly mounted to one end of a rotating shaft inside the extrusion barrel 3 , and the extrusion barrel 3 and the output shaft of the extrusion motor 4 are coaxially arranged.

[0025] The insulation component 6 includes an insulation sleeve 61 wrapped around the middle of the extrusion barrel 3, and a plurality of evenly distributed installation grooves 62 are provided on the front and rear sides of the insulation sleeve 61. A heating tile 63 is fixedly installed inside the installation groove 62. By setting the insulation component 6, the insulation sleeve 61 prevents the heat loss of the extrusion barrel 3, and the heating tile 63 heats the outside of the extrusion barrel 3 to ensure that the temperature inside the extrusion barrel 3 is maintained at an appropriate temperature, thereby preventing the polyvinyl butyral inside the extrusion barrel 3 from reducing its fluidity due to excessively low temperature.

[0026] The heat exchanger 14 includes two symmetrically arranged hollow discs and a plurality of circular tubes connected to the opposite surfaces of the two hollow discs. The two rotating sleeves 13 are respectively fixedly installed at the middle of the two hollow discs. The rotating sleeves 13 and the heat exchanger 14 are coaxially arranged.

[0027] A synchronous wheel 18 is fixedly mounted on the output end of the driving motor 15 , and another synchronous wheel 18 located outside the cooling water tank 9 is fixedly mounted on the middle part of a rotating sleeve 13 . The two synchronous wheels 18 are connected through a synchronous belt 19 .

[0028] The cooling coil 10, the liquid inlet pipe 11, the liquid outlet pipe 12 and the heat exchanger 14 are filled with a heat-conducting medium, and the heat-conducting medium is one of water, propylene glycol, triethanolamine and polymethacrylic acid.

[0029] The cooling water inlet 16 and the cooling water outlet 17 are respectively connected to an external cooling water circulation mechanism.

[0030] Working principle:

[0031] The heat preservation sleeve 61 prevents the heat loss of the extrusion barrel 3, and the heating tile 63 is provided to heat the outside of the extrusion barrel 3 to ensure that the temperature inside the extrusion barrel 3 is maintained at an appropriate temperature, and the polyvinyl butyral inside the extrusion barrel 3 is prevented from reducing the fluidity due to the low temperature. The heat of the extrusion die 7 is transferred to the heat-conducting medium in the cooling coil 10 through the cooling sleeve 8, and is transported to the inside of the heat exchanger 14 through the liquid outlet pipe 12. At the same time, the cooling water inside the cooling water tank 9 is circulated through the cooling water inlet 16 and the cooling water outlet 17, so that the cooling water exchanges heat with the heat-conducting medium inside the heat exchanger 14. At the same time, the driving motor 15 drives the heat exchanger 14 and the rotating sleeve 13 to rotate through the synchronous wheel 18 and the synchronous belt 19, thereby improving the heat exchange efficiency of the heat exchanger 14. The cooled heat-conducting medium flows into the cooling coil 10 again through the liquid inlet pipe 11, and the extrusion die 7 is continuously cooled. At the same time, the flow rate of the heat-conducting medium is controlled by the circulating pump 20, thereby controlling the temperature of the extrusion die 7.

[0032] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An extruder for the production of polyvinyl butyral, comprising a base (1), characterized in that, A stirring tank (2) is arranged on the top of the base (1), an extrusion barrel (3) located below the stirring tank (2) is fixedly mounted on the top of the base (1), a discharge pipe (5) is arranged on the bottom of the stirring tank (2), the bottom of the discharge pipe (5) is fixedly mounted on one end of the top of the extrusion barrel (3), an extrusion die (7) is fixedly mounted on the other end of the extrusion barrel (3), a heat preservation component (6) is wrapped around the middle of the extrusion barrel (3), a cooling sleeve (8) is wrapped around the outside of the extrusion die (7), a cooling water tank (9) is fixedly mounted on the top of the heat preservation component (6), a cooling coil (10) is provided inside the cooling sleeve (8), a liquid inlet pipe (11) is fixedly mounted on one end of the cooling coil (10), a liquid outlet pipe (12) is fixedly mounted on the other end of the cooling coil (10), and the Rotating sleeves (13) are rotatably connected through both ends of the cooling water tank (9), a driving motor (15) is fixedly mounted on the top of the cooling water tank (9), a circulating pump (20) is fixedly mounted on the front of the cooling water tank (9) at the middle of the liquid inlet pipe (11), the other end of the liquid inlet pipe (11) is in sealed rotational communication with a rotating sleeve (13), the other end of the liquid outlet pipe (12) is in sealed rotational communication with another rotating sleeve (13), the other end of the rotating sleeve (13) is provided with a heat exchanger (14) located inside the cooling water tank (9), the output end of the driving motor (15) is transmission-connected with a rotating sleeve (13), a cooling water inlet (16) is provided at the bottom of one side of the cooling water tank (9), and a cooling water outlet (17) is provided on the other side of the top of the cooling water tank (9).

2. An extruder for the production of polyvinyl butyral according to claim 1, characterized in that, An extrusion motor (4) is fixedly mounted on the top of the base (1); the output end of the extrusion motor (4) is fixedly mounted to one end of a rotating shaft inside the extrusion barrel (3); the extrusion barrel (3) and the output shaft of the extrusion motor (4) are coaxially arranged.

3. An extruder for producing polyvinyl butyral according to claim 1, characterized in that, The heat-insulating assembly (6) comprises a heat-insulating sleeve (61) wrapped around the middle of the extrusion barrel (3), a plurality of evenly distributed installation grooves (62) are provided on the front and rear sides of the interior of the heat-insulating sleeve (61), and a heating tile (63) is fixedly installed inside the installation groove (62).

4. An extruder for the production of polyvinyl butyral according to claim 1, characterized in that, The heat exchanger (14) comprises two symmetrically arranged hollow discs and a plurality of circular tubes connected to the opposite surfaces of the two hollow discs. The two rotating sleeves (13) are respectively fixedly mounted on the middle parts of the two hollow discs. The rotating sleeves (13) are coaxially arranged with the heat exchanger (14).

5. An extruder for the production of polyvinyl butyral according to claim 1, characterized in that, A synchronous wheel (18) is fixedly mounted on the output end of the driving motor (15), another synchronous wheel (18) located outside the cooling water tank (9) is fixedly mounted on the middle part of one of the rotating sleeves (13), and the two synchronous wheels (18) are connected by a synchronous belt (19).

6. An extruder for the production of polyvinyl butyral according to claim 1, characterized in that, The interior of the cooling coil (10), the liquid inlet pipe (11), the liquid outlet pipe (12) and the heat exchanger (14) is filled with a heat-conducting medium, and the heat-conducting medium is one of water, propylene glycol, triethanolamine and polymethyl methacrylate.

7. An extruder for the production of polyvinyl butyral according to claim 1, characterized in that, The cooling water inlet (16) and the cooling water outlet (17) are respectively connected to an external cooling water circulation mechanism.

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