Machine barrel screw structure
By designing the barrel as spliced from the upper and lower barrel shells and having a separable structure, the problem of inconvenient cleaning of the inner wall of the single screw extruder is solved, and the dual functions of efficient cleaning and raw material heating are achieved.
Patent Information
- Application Number
- CN202421730471.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The barrel structure of the existing single-screw extruder is designed in an integrated manner, which makes the inner wall cleaner not simple and efficient enough, especially the raw materials adhered to the middle are difficult to easily remove, which brings huge inconvenience to the cleaning work.
A barrel screw structure is designed, in which the barrel is spliced by the upper barrel shell and the lower barrel shell, and the pushing screw is fixed through the connecting parts at both ends. When cleaning is required, the upper and lower barrel shells can be separated by lifting the constraints, simplifying the cleaning process. At the same time, the upper and lower barrel shells are double-layered structures, and have the storage function of heating oil.
It realizes simple and efficient cleaning of the inner wall of the barrel, avoids poor operation problems caused by the adhesion of raw materials, and also has the function of heating raw materials, improving the efficiency of the equipment.
Smart Images
Figure CN222891619U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of barrel screws, in particular to a barrel screw structure. Background Art
[0002] The single screw extruder is composed of an Archimedean screw rotating in a heated barrel. It is widely used due to its simple structure, easy manufacturing, high processing efficiency and low price. It is the most mature and most used type of extruder. From the initial basic spiral structure, the single screw extruder has developed into various structural types such as damping screw block, exhaust screw, slotted barrel, pin barrel, building block structure, etc. At the same time, due to the small space occupied by the single screw extruder, it has become the main equipment used in the field of composite processing and plastic blown film.
[0003] The materials processed by the existing single-screw extruder usually have a certain degree of viscosity, so the barrel needs to be cleaned regularly to prevent the raw materials attached to the inner wall from having an adverse effect on the operation of the entire machine. However, since the barrel is usually an integrated cylindrical structure, this structural form will result in insufficient simplicity and efficiency when cleaning the inner wall, especially when raw materials that are difficult to remove adhere to the middle part of the barrel, which will cause great inconvenience to the cleaning work. Therefore, a barrel screw structure is proposed to address the above problems. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a barrel screw structure, in which the barrel part of the barrel screw is spliced by an upper barrel shell and a lower barrel shell, and the pushing screw and the upper barrel shell and the lower barrel shell are fixed or constrained by connecting pieces at both ends. When it is necessary to clean the inner wall, it is only necessary to release the constraints at both ends first, and then the upper barrel shell and the lower barrel shell can be separated from each other, making the cleaning work simple and efficient. At the same time, both the upper barrel shell and the lower barrel shell are double-layer structures, in which heating oil can be stored, so that the barrel has the function of heating the raw materials, which solves the technical problem in the prior art that the integrated structural form of the barrel will bring great inconvenience to the cleaning of the inner wall.
[0005] The technical solution adopted by the embodiment of the present application to solve the technical problem is:
[0006] A barrel screw structure comprises a barrel, which is composed of an upper barrel shell and a lower barrel shell connected by bolts, a push screw which is rotatably arranged in the barrel, a front end sealed connecting piece which is bolted to the front end of the barrel to support the front end of the push screw, and a rear end sealed connecting piece which is bolted to the rear end of the barrel to support the rear end of the push screw; wherein the upper barrel shell and the lower barrel shell have the same structural structure, both comprising an outer insulation shell and an inner heat conductive shell, and a sealed oil chamber is enclosed between the outer insulation shell and the inner heat conductive shell.
[0007] Through the above-mentioned structural form, the barrel part is spliced by the upper barrel shell and the lower barrel shell, and the push screw is constrained to rotate by the front end closed connecting pieces and the rear end closed connecting pieces at both ends. In addition, the upper barrel shell and the lower barrel shell are fixed or, when it is necessary to clean the inner wall thereof, it is only necessary to release the restraining effect of the connecting pieces at both ends and the upper barrel shell and the lower barrel shell, and the upper barrel shell and the lower barrel shell can be separated from each other, making the cleaning work simple and efficient; at the same time, both the upper barrel shell and the lower barrel shell are double-layer structures, consisting of an outer insulation shell and an inner heat-conducting shell, and the oil chamber therein can store heating oil, so that the barrel has the function of heating the raw materials.
[0008] In a possible implementation, the front-end sealed connection member includes a sleeve, an end of the sleeve is fixedly connected to a connection disk, and two sealed rubber rings are fixedly disposed inside the sleeve.
[0009] Through the above-mentioned structural form, the bolt connection between the connecting plate and the barrel can be realized, and the sealed rubber ring can not only support the end of the push screw, but also prevent the escape of the raw material.
[0010] In a possible implementation, the size of the opening of the sealed rubber ring is consistent with the diameter of the front end of the push screw, and lubricating grease is filled between the two sealed rubber rings.
[0011] Through the above-mentioned structural form, the sealed rubber ring can be in close contact with the push screw to ensure a stable supporting effect, while the lubricating grease can significantly reduce the friction between the two and extend the service life of the sealed rubber ring.
[0012] In one possible implementation, the rear end sealed connection includes an end plate, the inner end surface of the end plate is fixedly provided with a centrally arranged mounting cylinder, a connecting bearing is fixedly installed in the mounting cylinder, wherein the inner ring diameter of the connecting bearing matches the rear end rod diameter of the push screw, and the rear end of the push screw is processed with a chamfer.
[0013] Through the above-mentioned structural form, the rear end of the push screw can be supported and constrained by inserting the push screw into the connecting bearing, while the normal rotation of the push screw is not affected.
[0014] In a possible implementation, connecting rings are fixedly provided at the rear ends of the upper cylindrical shell and the lower cylindrical shell, and the end plates are connected to the connecting rings by bolts.
[0015] Through the above-mentioned structural form, the setting of the connecting ring provides the necessary structural foundation for the bolt connection of the end plate.
[0016] In a possible implementation, the outer heat-insulating shell and the inner heat-conducting shell are fixedly connected by a plurality of strip-shaped connecting members, and a plurality of through oil holes are formed on the strip-shaped connecting members.
[0017] Through the above structural form, the outer insulation shell and the inner heat-conducting shell are fixedly connected by the strip-shaped connecting piece, and the oil holes opened thereon can allow the heating oil to flow, providing a necessary passage for the circulation of the heating oil.
[0018] In a possible implementation, a slot is provided at the bottom of the inner heat-conducting shell of the upper cylindrical shell, and a strip-shaped protrusion is provided at the top of the inner heat-conducting shell of the lower cylindrical shell, and the size of the strip-shaped protrusion matches the size of the slot.
[0019] Through the above-mentioned structural form, the tightness of the joints between the inner heat-conducting shells can be improved by the structural form in which the grooves and the strip-shaped protrusions are mutually engaged, and the raw materials can be effectively prevented from escaping from the joints.
[0020] In a possible implementation, an oil inlet communicating with the oil chamber is provided on the outer insulation shell of the upper cylinder shell, and an oil outlet communicating with the oil chamber is provided on the outer insulation shell of the lower cylinder shell.
[0021] The above structural form provides the necessary structural basis for the circulation of heating oil.
[0022] In a possible implementation, the inner heat-conducting shell of the upper cylinder shell is connected to a material inlet extending out of the outer heat-insulating shell, and the inner heat-conducting shell of the lower cylinder shell is connected to a material outlet extending out of the outer heat-insulating shell.
[0023] Through the above structural form, raw materials can be added into the barrel through the feed inlet, and the pressurized and plasticized mixed material is discharged through the discharge port.
[0024] In summary, the utility model includes the following beneficial technical effects:
[0025] The barrel is composed of an upper barrel shell and a lower barrel shell, and the push screw is constrained to rotate by the front and rear sealed connectors at both ends. When the inner wall needs to be cleaned, it is only necessary to release the constraints of the connectors at both ends and the upper and lower barrel shells, and then the upper and lower barrel shells can be separated from each other, making the cleaning work simple and efficient.
[0026] At the same time, the upper barrel shell and the lower barrel shell are both double-layer structures, consisting of an outer insulation shell and an inner heat-conducting shell. The oil cavity therein can store heating oil, so that the barrel has the function of heating the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0029] Figure 2 It is a schematic diagram of the internal structure of the utility model;
[0030] Figure 3 It is a schematic diagram of the barrel structure of the utility model;
[0031] Figure 4 This is a schematic diagram of the rear end closed connector structure of the utility model;
[0032] Figure 5 It is a schematic diagram of the structure of the front-end sealed connecting piece of the utility model.
[0033] In the figure: 11, upper cylinder shell; 111, feed inlet; 112, oil inlet; 12, lower cylinder shell; 121, discharge port; 122, oil outlet; 13, connecting ring; 101, outer insulation shell; 102, inner heat-conducting shell; 103, strip-shaped connecting piece; 104, oil hole; 105, oil chamber; 106, strip-shaped protrusion; 107, slot; 2, push screw; 21, chamfer; 3, front end closed connecting piece; 31, sleeve; 32, connecting plate; 33, closed rubber ring; 4, rear end closed connecting piece; 41, end plate; 42, mounting cylinder; 43, connecting bearing. DETAILED DESCRIPTION
[0034] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:
[0035] like Figure 1 - Figure 3 As shown, a barrel screw structure provided in this embodiment includes a barrel, which is composed of an upper barrel shell 11 and a lower barrel shell 12 connected by bolts, a push screw 2, which is rotatably arranged in the barrel, a front end closed connecting piece 3, which is bolted to the front end of the barrel to support the front end of the push screw 2, and a rear end closed connecting piece 4, which is bolted to the rear end of the barrel to support the rear end of the push screw 2. Through the above-mentioned structural form, the barrel part is spliced by the upper barrel shell 11 and the lower barrel shell 12, and the push screw 2 is rotationally constrained by the front end closed connecting piece 3 and the rear end closed connecting piece 4 at both ends. When the inner wall needs to be cleaned, it is only necessary to first release the restraining effect of the two end connecting pieces and the upper barrel shell 11 and the lower barrel shell 12, and the upper barrel shell 11 and the lower barrel shell 12 can be separated from each other, so that the cleaning work becomes simple and efficient.
[0036] In addition, the upper cylinder shell 11 and the lower cylinder shell 12 have the same structure, both including an outer insulation shell 101 and an inner heat-conducting shell 102, and a closed oil chamber 105 is formed between the outer insulation shell 101 and the inner heat-conducting shell 102. Since the upper cylinder shell 11 and the lower cylinder shell 12 are both double-layer structures, consisting of an outer insulation shell 101 and an inner heat-conducting shell 102, the oil chamber 105 can store heating oil, so that the barrel has the function of heating the raw materials.
[0037] like Figure 5 As shown, the front end sealed connecting piece 3 includes a sleeve 31, a connecting plate 32 is fixedly connected to the end of the sleeve 31, and two sealed rubber rings 33 are fixedly arranged inside the sleeve 31. Through the above-mentioned structural form, the bolt connection between the connecting plate 32 and the barrel can be achieved, and the sealed rubber ring 33 can not only support the end of the pushing screw 2, but also prevent the escape of raw materials.
[0038] Among them, the opening size of the sealed rubber ring 33 is consistent with the rod diameter size at the front end of the pushing screw 2, and the two sealed rubber rings 33 are filled with lubricating paste. Through the above-mentioned structural form, the sealed rubber ring 33 can be in close contact with the pushing screw 2 to ensure a stable supporting role, and the lubricating paste can significantly reduce the friction between the two and extend the service life of the sealed rubber ring 33.
[0039] like Figure 4 As shown, the rear end closed connection part 4 includes an end plate 41, and a centrally arranged mounting cylinder 42 is fixedly provided on the inner end surface of the end plate 41, and a connecting bearing 43 is fixedly installed in the mounting cylinder 42, wherein the inner ring diameter of the connecting bearing 43 matches the rear end rod diameter of the pushing screw 2, and the rear end of the pushing screw 2 is processed with a chamfer 21. Through the above-mentioned structural form, the pushing screw 2 can be inserted into the connecting bearing 43 to play a supporting and restraining role on its rear end without affecting its normal rotation.
[0040] In addition, the rear ends of the upper cylinder shell 11 and the lower cylinder shell 12 are fixedly provided with connecting rings 13, and the end plate 41 is connected to the connecting rings 13 by bolts. The setting of the connecting rings 13 provides the necessary structural basis for the bolt connection of the end plate 41.
[0041] like Figure 3 As shown, the outer thermal insulation shell 101 and the inner heat-conducting shell 102 are fixedly connected by a plurality of strip-shaped connecting members 103, and a plurality of through oil holes 104 are provided on the strip-shaped connecting members 103. Through the above-mentioned structural form, the outer thermal insulation shell 101 and the inner heat-conducting shell 102 are fixedly connected by the strip-shaped connecting members 103, and the oil holes 104 provided thereon can allow the heating oil to flow, thereby providing a necessary passage for the circulation of the heating oil.
[0042] Among them, a slot 107 is provided at the bottom of the inner heat-conducting shell 102 of the upper cylinder shell 11, and a strip-shaped protrusion 106 is provided at the top of the inner heat-conducting shell 102 of the lower cylinder shell 12, and the size of the strip-shaped protrusion 106 is consistent with the size of the slot 107. The slot 107 and the strip-shaped protrusion 106 can be connected to each other in a structural form to improve the tightness of the joint between the inner heat-conducting shells 102, and can effectively prevent the raw materials from escaping from the joints.
[0043] like Figure 1As shown, the outer insulation shell 101 of the upper cylinder shell 11 is provided with an oil inlet 112 connected to the oil chamber 105, and the outer insulation shell 101 of the lower cylinder shell 12 is provided with an oil outlet 122 connected to the oil chamber 105. The above-mentioned structural form provides the necessary structural basis for the circulation of heating oil.
[0044] In addition, the inner heat-conducting shell 102 of the upper cylinder shell 11 is connected to a feed port 111 extending out of the outer heat-insulating shell 101, and the inner heat-conducting shell 102 of the lower cylinder shell 12 is connected to a discharge port 121 extending out of the outer heat-insulating shell 101. Raw materials can be added into the barrel through the feed port 111, and the pressurized plasticized mixture is discharged through the discharge port 121.
[0045] The use principle and use process of this utility model:
[0046] The barrel part is composed of an upper barrel shell 11 and a lower barrel shell 12, and the push screw 2 is constrained in rotation by the front end sealed connector 3 and the rear end sealed connector 4 at both ends. In addition, the upper barrel shell 11 and the lower barrel shell 12 are fixed or, when it is necessary to clean the inner wall thereof, it is only necessary to release the restraining effect of the connectors at both ends and the upper barrel shell 11 and the lower barrel shell 12, and the upper barrel shell 11 and the lower barrel shell 12 can be separated from each other, making the cleaning work simple and efficient.
[0047] Among them, the front end closed connection part 3 includes a sleeve 31 and a connecting plate 32, and two closed rubber rings 33 are fixedly arranged in the sleeve 31, and the connecting plate 32 can be used to realize the bolt connection between the machine barrel. The closed rubber ring 33 can not only support the end of the pushing screw 2, but also prevent the escape of raw materials; the rear end closed connection part 4 includes an end plate 41, a mounting cylinder 42 and a connecting bearing 43, and can support and constrain the rear end of the pushing screw 2 by inserting the connecting bearing 43 without affecting its normal rotation.
[0048] At the same time, the upper cylinder shell 11 and the lower cylinder shell 12 are both double-layer structures, consisting of an outer insulation shell 101 and an inner heat-conducting shell 102. The oil cavity 105 therein can store heating oil, so that the barrel has the function of heating the raw materials, and the oil inlet 112 and the oil outlet 122 provide the necessary structural basis for the circulation of the heating oil.
[0049] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.
Claims
1. A barrel screw structure, characterized in that: include: The barrel is composed of an upper barrel shell (11) and a lower barrel shell (12) connected by bolts; A push screw (2) rotatably arranged in the barrel; A front end sealed connection piece (3) is bolted to the front end of the barrel and is used to support the front end of the push screw (2); A rear end sealed connection piece (4) is bolted to the rear end of the barrel and is used to support the rear end of the push screw (2); The upper cylindrical shell (11) and the lower cylindrical shell (12) have the same structure, both comprising an outer thermal insulation shell (101) and an inner heat-conducting shell (102), and a sealed oil chamber (105) is formed between the outer thermal insulation shell (101) and the inner heat-conducting shell (102).
2. A barrel screw structure according to claim 1, characterized in that: The front end sealed connection piece (3) comprises a sleeve (31), the end of the sleeve (31) is fixedly connected to a connection plate (32), and two sealed rubber rings (33) are fixedly arranged inside the sleeve (31).
3. A barrel screw structure according to claim 2, characterized in that: The opening size of the sealing rubber ring (33) is consistent with the diameter of the front end of the pushing screw (2), and lubricating grease is filled between the two sealing rubber rings (33).
4. A barrel screw structure according to claim 1, characterized in that: The rear end sealed connection member (4) comprises an end plate (41), the inner end surface of the end plate (41) is fixedly provided with a centrally arranged mounting tube (42), and a connecting bearing (43) is fixedly installed in the mounting tube (42); The inner ring diameter of the connecting bearing (43) matches the rear end diameter of the push screw (2), and the rear end of the push screw (2) is processed with a chamfer (21).
5. A barrel screw structure according to claim 4, characterized in that: A connecting ring (13) is fixedly provided at the rear ends of the upper cylindrical shell (11) and the lower cylindrical shell (12), and the end plate (41) and the connecting ring (13) are connected by bolts.
6. A barrel screw structure according to claim 1, characterized in that: The outer heat-insulating shell (101) and the inner heat-conducting shell (102) are fixedly connected via a plurality of strip-shaped connecting pieces (103), and a plurality of through oil holes (104) are provided on the strip-shaped connecting pieces (103).
7. The barrel screw structure according to claim 1, characterized in that: A slot (107) is provided at the bottom of the inner heat-conducting shell (102) of the upper cylindrical shell (11), and a strip-shaped protrusion (106) is provided at the top of the inner heat-conducting shell (102) of the lower cylindrical shell (12), and the size of the strip-shaped protrusion (106) matches the size of the slot (107).
8. The barrel screw structure according to claim 1, characterized in that: The outer heat-insulating shell (101) of the upper cylindrical shell (11) is provided with an oil inlet (112) communicating with the oil chamber (105), and the outer heat-insulating shell (101) of the lower cylindrical shell (12) is provided with an oil outlet (122) communicating with the oil chamber (105).
9. A barrel screw structure according to claim 1, characterized in that: The inner heat-conducting shell (102) of the upper cylindrical shell (11) is connected to a material inlet (111) extending out of the outer heat-insulating shell (101), and the inner heat-conducting shell (102) of the lower cylindrical shell (12) is connected to a material outlet (121) extending out of the outer heat-insulating shell (101).