Combined type melting mixing machine barrel with heat source runner

Abstract

A combined type melting mixing machine barrel with a heat source runner comprises a plurality of machine barrel units which are sequentially connected in the axial direction, mixing cavities are formed in the machine barrel units, and the mixing cavities of the machine barrel units are matched and communicated in the axial direction. A serpentine heating runner or an annular heating runner used for heating materials in a mixing cavity is formed in each machine barrel unit, the two runners can fully ensure that the section of the mixing cavity in the machine barrel unit is fully heated, the structure is simple, machining is convenient, heating media are independently introduced into the runner in each machine barrel unit, and therefore the heating efficiency is improved. And the temperature of the heating medium in each machine barrel unit can be conveniently controlled without communicating with each other, so that the defect that the existing integral machine barrel is difficult to realize segmented temperature control is overcome.

Description

Technical Field

[0001] The utility model relates to the field of barrel devices of a melt-kneading unit, in particular to a combined melt-kneading barrel with a heat source flow channel. Background Art

[0002] The mixing, extrusion and granulation unit can mix, plasticize, extrude, pelletize, separate and dry the materials, and finally process them into regular granular products. The melt mixing system is an important part of the mixing, extrusion and granulation unit, which mainly includes a barrel and a support. The conveying screw is inserted into the mixing chamber of the barrel, and the end of the conveying screw is installed in the support. The material is heated in the mixing chamber and melted and plasticized under the action of the conveying screw. To ensure the mixing effect, the mixing chamber must be of sufficient length to allow sufficient time for the material to flow and melt. This results in the existing barrel being too long, making it difficult to process and install. Moreover, when different lengths of the mixing chamber require different heating temperatures, the existing barrel is also difficult to achieve temperature segmentation control, which ultimately has an adverse effect on the melt mixing system. Utility Model Content

[0003] In order to solve the problems that the existing barrel is too long, difficult to process and install, and difficult to achieve segmented temperature control, the utility model provides a combined melt mixing barrel with a heat source flow channel.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a combined melt mixing barrel with a heat source flow channel, comprising a plurality of barrel units connected in sequence along the axial direction, a mixing chamber is provided inside the barrel unit, the mixing chambers of the plurality of barrel units are coordinated and penetrated along the axial direction so as to facilitate the installation of two conveying screws in the mixing chamber, the two barrel units located at the end are respectively a feed barrel and a discharge barrel, the feed barrel and the discharge barrel are respectively provided with a feed port and a discharge port, and a serpentine heating flow channel or an annular heating flow channel is provided inside the barrel unit for heating the material in the mixing chamber;

[0005] When a serpentine heating flow channel is adopted, a plurality of axial through holes are provided in the barrel unit, a plurality of radial grooves are provided on both axial side walls of the barrel unit, the plurality of axial through holes are spaced apart around the mixing chamber, the two ends of the axial through hole are respectively located at the end positions of the two radial grooves along the length direction, and the two radial grooves at both ends of the same axial through hole extend in opposite directions on both sides of the axial through hole, a plurality of baffles are installed on both axial side walls of the barrel unit, the plurality of baffles are respectively sealed on the notches of their respective radial grooves, so that cavities respectively connected to the two axial through holes are formed between the radial grooves and the baffles, two axial blind holes are further provided in the barrel unit, the two axial blind holes are respectively connected to the cavities of two different radial grooves, an inlet and outlet respectively connected to the two axial blind holes are provided on the barrel unit, so that the heating medium flows into the axial blind hole from one of the inlets and outlets, and the serpentine channel formed by the cooperation of the plurality of axial through holes and the plurality of radial groove cavities can make the heating medium flow around the mixing chamber and flow out from the other axial blind hole and the inlet and outlet;

[0006] When an annular heating channel is used, an outer channel sleeve is provided on the outer side of the barrel unit, and the outer channel sleeve is sealedly connected to the two axial ends of the barrel unit. An annular cavity is formed between the outer channel sleeve and the barrel unit, and an inlet and outlet for the heating medium to pass through are opened on the outer channel sleeve.

[0007] Preferably, end flanges are provided at both ends of the barrel unit in the axial direction, and adjacent barrel units are axially connected by passing bolts through the end flanges.

[0008] According to the above technical solution, the beneficial effects of the utility model are:

[0009] The utility model comprises a plurality of barrel units connected in sequence along the axial direction, and the mixing chambers of the plurality of barrel units are cooperated with a conveying screw, so the length of each barrel unit is relatively short, which is convenient for processing and installation. A serpentine heating flow channel or an annular heating flow channel is respectively opened in each barrel unit, and both flow channels can fully ensure that the mixing chamber section inside the barrel unit is fully heated, and the structure is simple and the processing is convenient. Moreover, the flow channel inside each barrel unit is separately fed with a heating medium and is not connected to each other, so that the temperature of the heating medium inside each barrel unit can be conveniently controlled, thereby overcoming the defect that the existing integral barrel is difficult to achieve segmented temperature control. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a perspective view of embodiment 1;

[0011] Figure 2 A half-part perspective view of Example 1;

[0012] Figure 3 Schematic diagram of the flow channel of Example 1;

[0013] Figure 4 This is a front cross-sectional view of Example 2;

[0014] Figure 5 It is the AA cross-sectional view of the second embodiment.

[0015] Markings in the figure: 1. Barrel unit, 2. Mixing chamber, 3. End flange, 4. Inlet and outlet, 5. Baffle, 6. Radial groove, 7. Axial blind hole, 8. Axial through hole, 9. Feed port, 10. Outer flow channel sleeve, 11. Annular chamber. DETAILED DESCRIPTION

[0016] With reference to the accompanying drawings, the specific implementation is as follows:

[0017] A combined melt mixing barrel with a heat source flow channel includes multiple barrel units 1 connected in sequence along the axial direction, a mixing chamber 2 is provided inside the barrel unit 1, and the mixing chambers 2 of the multiple barrel units 1 are cooperated to penetrate along the axial direction so that two conveying screws can be passed through the mixing chamber 2. End flanges 3 are respectively provided at both ends of the barrel unit 1 in the axial direction, and adjacent barrel units 1 are axially connected by bolts passed through the end flanges 3. The two barrel units 1 located at the end are respectively a feed barrel and a discharge barrel, and the feed barrel and the discharge barrel are respectively provided with a feed port 9 and a discharge port. A serpentine heating flow channel or an annular heating flow channel for heating the material in the mixing chamber 2 is provided inside the barrel unit 1.

[0018] The first embodiment adopts a serpentine heating channel, such as Figure 1-3 As shown, the barrel unit 1 of Example 1 is a middle barrel located between the feed barrel and the discharge barrel, and a plurality of axial through holes 8 are provided in the barrel unit 1. A plurality of radial grooves 6 are provided on both axial side walls of the barrel unit 1. The plurality of axial through holes 8 are spaced apart around the mixing chamber 2, and the two ends of the axial through hole 8 are respectively located at the end positions of the two radial grooves 6 along the length direction, and the two radial grooves 6 at both ends of the same axial through hole 8 extend in opposite directions on both sides of the axial through hole 8, and a plurality of baffles 5 are installed on the two axial side walls of the barrel unit 1, and the plurality of baffles 5 are respectively sealed on the notches of their respective radial grooves 6, so that cavities respectively connected to the two axial through holes 8 are formed between the radial grooves 6 and the baffles 5.

[0019] like Figure 2 、 3 As shown, two axial blind holes 7 are further provided in the barrel unit 1, and the two axial blind holes 7 are respectively connected to the cavities of two different radial grooves 6. The barrel unit 1 is provided with an inlet and outlet 4 respectively connected to the two axial blind holes 7, so that the heating medium flows into the axial blind hole 7 from one of the inlet and outlet 4. The serpentine channel formed by the cooperation of the multiple axial through holes 8 and the cavities of the multiple radial grooves 6 can enable the heating medium to flow around the mixing chamber 2 and flow out from the other axial blind hole 7 and the inlet and outlet 4.

[0020] The second embodiment adopts an annular heating channel, such as Figure 4-5 As shown, the barrel unit 1 of the second embodiment is a feed barrel, a feed port 9 is provided on the top side of the barrel unit 1, an outer runner sleeve 10 is provided on the outer side of the barrel unit 1, the outer runner sleeve 10 is welded to the end flanges 3 on both sides of the barrel unit 1, an annular cavity 11 is formed between the outer runner sleeve 10 and the barrel unit 1, and an inlet and outlet 4 for the heating medium to pass through is provided on the outer runner sleeve 10.

[0021] Since multiple barrel units are connected in sequence along the axial direction, the length of each barrel unit is relatively short, which is convenient for processing and installation. The serpentine heating flow channel and the annular heating flow channel can fully ensure that the mixing chamber inside the barrel unit is fully heated. It has a simple structure and is easy to process. Moreover, the flow channel inside each barrel unit is independently fed with the heating medium and is not connected to each other, so the temperature of the heating medium inside each barrel unit can be easily controlled.

Claims

1. A combined melt mixing barrel with a heat source flow channel, characterized in that: The invention comprises a plurality of barrel units (1) connected in sequence along the axial direction, a mixing chamber (2) is provided inside the barrel unit (1), the mixing chambers (2) of the plurality of barrel units (1) are coordinated and penetrated along the axial direction so as to facilitate the provision of two conveying screws in the mixing chamber (2), the two barrel units (1) at the end are respectively a feed barrel and a discharge barrel, the feed barrel and the discharge barrel are respectively provided with a feed port (9) and a discharge port, and a serpentine heating flow channel or an annular heating flow channel for heating the material in the mixing chamber (2) is provided inside the barrel unit (1); When a serpentine heating channel is used, a plurality of axial through holes (8) are provided in the barrel unit (1), a plurality of radial grooves (6) are provided on both axial side walls of the barrel unit (1), the plurality of axial through holes (8) are spaced around the mixing chamber (2), the two ends of the axial through hole (8) are respectively located at the end positions of the two radial grooves (6) along the length direction, and the two radial grooves (6) at both ends of the same axial through hole (8) extend in opposite directions on both sides of the axial through hole (8), and a plurality of baffles (5) are installed on both axial side walls of the barrel unit (1), and the plurality of baffles (5) are respectively sealed on the notches of their respective radial grooves (6), so that the radial grooves ( 6) and the baffle (5) form cavities respectively connected to the two axial through holes (8), two axial blind holes (7) are further provided in the barrel unit (1), the two axial blind holes (7) are respectively connected to the cavities of two different radial grooves (6), and the barrel unit (1) is provided with an inlet and outlet (4) respectively connected to the two axial blind holes (7), so that the heating medium flows from one of the inlet and outlet (4) into the axial blind hole (7), and the serpentine channel formed by the cavities of the multiple axial through holes (8) and the multiple radial grooves (6) can make the heating medium flow around the mixing chamber (2) and flow out from the other axial blind hole (7) and the inlet and outlet (4); When an annular heating channel is used, an outer channel sleeve (10) is provided on the outer side of the barrel unit (1), and the outer channel sleeve (10) is sealedly connected to both ends of the barrel unit (1) in the axial direction, forming an annular cavity (11) between the outer channel sleeve (10) and the barrel unit (1), and an inlet and outlet (4) for the passage of a heating medium is provided on the outer channel sleeve (10).

2. The combined melt-kneading barrel with a heat source flow channel according to claim 1, characterized in that: End flanges (3) are respectively provided at both axial ends of the barrel unit (1), and adjacent barrel units (1) are axially connected by bolts passing through the end flanges (3).

Images