Cylinder structure of co-rotating parallel twin-screw extruder and extruder
By wrapping the medium pipeline around the outside of the barrel body and adopting a labyrinth seal and segmented design, the problems of low heating and cooling efficiency, poor sealing and difficult maintenance of the barrel of the co-rotating parallel twin-screw extruder are solved, achieving efficient temperature control and sealing, simplifying the maintenance process and improving product quality.
Patent Information
- Application Number
- CN202520580240.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-31
AI Technical Summary
The existing co-rotating parallel twin-screw extruder barrel structure suffers from problems such as low heating and cooling efficiency, poor sealing performance, and difficulty in cleaning and maintenance.
The medium pipeline is spirally wound around the outside of the cylinder body, and a labyrinth seal structure and segmented design are adopted. Combined with pressure and temperature sensors, it can achieve efficient temperature control and sealing, and facilitate disassembly and maintenance.
It improves temperature control efficiency, enhances sealing performance, reduces the risk of material leakage, simplifies cleaning and maintenance processes, and improves product quality and production efficiency.
Smart Images
Figure CN223904506U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to extruder structure technical field, concretely relates to a same direction parallel double screw extruder barrel structure and extruder. BACKGROUND
[0002] In recent years, with the rapid development of economy, the plastic machinery industry is booming, and the demand for polymer modified materials is increasing, and the requirement for double screw extruders is also increasing, and the same direction parallel double screw extruder is widely concerned as an important type.
[0003] The same direction parallel double screw extruder is a commonly used equipment in the plastic processing industry, and the barrel is an important part for material plasticizing, conveying and mixing. The existing same direction parallel double screw extruder barrel structure has some deficiencies. For example, the barrel heating and cooling efficiency of the traditional double screw extruder is not high, which leads to uneven material plasticizing and affects the quality of the product; the sealing performance of the barrel is poor, and material leakage problem is prone to occur, which not only causes material waste, but also may pollute the working environment; the current part of the barrel structure is difficult to clean and maintain, which increases the use cost and downtime of the equipment.
[0004] Therefore, the current same direction parallel double screw extruder barrel structure has the problems of low heating and cooling efficiency, poor sealing performance and difficult cleaning and maintenance. UTILITY MODEL CONTENTS
[0005] The utility model solves the technical problem that the current same direction parallel double screw extruder barrel structure has the problems of low heating and cooling efficiency and poor sealing performance, and based on this, the utility model provides a same direction parallel double screw extruder barrel structure and extruder, which solves the problems of low heating and cooling efficiency and poor sealing performance of the existing barrel structure, improves the production efficiency and also improves the product quality.
[0006] The utility model realizes the following technical scheme:
[0007] In the first aspect, the application provides a same direction parallel double screw extruder barrel structure, which comprises a barrel body, a feeding port and a discharging port are arranged on the barrel body, a spiral groove is arranged on the outer wall of the barrel body, and a medium pipeline is installed in the spiral groove; sealing end covers are spirally connected to the openings at both ends of the barrel body, through holes for installing screw rods are arranged on the sealing end covers, and sealing rings are installed on the inner walls of the through holes.
[0008] The medium pipeline is spirally wound outside the barrel body structure of the barrel body, cold medium or hot medium is passed into the medium pipeline to realize cooling and heating of the material in the barrel body, the temperature control efficiency is improved, the material plasticization is uniform, and the product quality is improved.
[0009] In addition, by arranging the spiral groove on the outer wall of the barrel body to install the medium pipeline, not only the contact area between the medium pipeline and the barrel body is increased, and the heating or cooling rate is improved, but also the installation of the medium pipeline is more firm, and the space occupied by the barrel body is reduced.
[0010] Further, the sealing end cover and the barrel body are sealed by a labyrinth sealing structure, and the labyrinth sealing structure comprises an annular groove arranged on the barrel body, and an annular protrusion arranged on the sealing end cover and connected with the annular groove.
[0011] The labyrinth sealing structure is used to connect the sealing end cover and the barrel body, which can effectively block the leakage path of the material, and form a double sealing structure with the sealing ring to ensure the sealing performance of the barrel and prevent the material from leaking from both ends of the barrel.
[0012] Further, the barrel body is composed of a plurality of barrel segments, and adjacent barrel segments are connected by a detachable connection structure.
[0013] The barrel body adopts a segmented structure design and is spliced by a plurality of barrel segments, and the length of each barrel segment can be controlled according to actual needs. The structure of the barrel body is convenient to disassemble and install, and when cleaning or maintenance is needed, the barrel segments can be easily disassembled for thorough cleaning of the inside, and damaged parts can be easily replaced, reducing the difficulty and time cost of cleaning and maintenance.
[0014] Further, the detachable connection structure comprises a connecting block connected to the barrel segment, and a bolt hole is arranged on the connecting block, and adjacent barrel segments are connected and fixed by connecting locking bolts in the bolt holes.
[0015] Further, one end of the barrel segment is provided with an annular clamping block, and the other end is provided with an annular clamping groove clamped with the annular clamping block.
[0016] Further, the detachable connection structure comprises an annular threaded groove arranged at one end of the barrel segment, and the other end of the barrel segment is provided with an annular threaded mounting block threadedly connected with the annular threaded groove.
[0017] Further, the medium pipeline of each barrel segment is connected with a medium supply structure respectively.
[0018] Further, a pipeline joint is connected to the medium pipeline of each barrel segment, and the medium pipelines between adjacent barrel segments are connected through a connecting pipe.
[0019] Further, a pressure sensor and / or a temperature sensor are installed inside the barrel body.
[0020] In the second aspect, the application provides an extruder comprising the barrel structure.
[0021] Compared with the prior art, the application has the following advantages and beneficial effects:
[0022] (1) The application passes the medium pipeline through the spiral winding outside the barrel body of the extruder barrel structure, and the cooling and heating of the material in the barrel body are realized by passing the cold medium or hot medium in the medium pipeline, which improves the temperature control efficiency, avoids the uneven plasticization of the material, and further improves the quality of the product.
[0023] (2) The application installs the medium pipeline on the outer wall of the barrel body by setting the spiral groove, which not only improves the contact area between the medium pipeline and the barrel body, and further improves the heating or cooling rate, but also makes the installation of the medium pipeline more firm, and reduces the space occupied by the barrel body.
[0024] (3) The barrel body of the application adopts a segmented structure design and is spliced by multiple barrel segments, which is convenient to disassemble and install, and when cleaning or maintenance is needed, the barrel segments can be easily disassembled for thorough cleaning of the inside, and the damaged parts can also be easily replaced, reducing the difficulty and time cost of cleaning and maintenance.
[0025] (4) The application installs a pressure sensor and a temperature sensor inside the barrel body, which can monitor the pressure value and temperature value inside the barrel body at any time, and ensures the safe operation of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0026] The drawings described herein are used to provide a further understanding of the embodiments of the application, constitute a part of the application, and do not constitute a limitation on the embodiments of the application. In the drawings:
[0027] Figure 1 is a schematic view of the internal structure of the same-direction parallel double-screw extruder barrel structure in the embodiment 1 of the application;
[0028] Figure 2 is Figure 1 enlarged view of A;
[0029] Figure 3 is an external structure schematic view of a same-direction parallel double-screw extruder barrel structure in embodiment 1 of the utility model;
[0030] Figure 4 is an internal structure schematic view of a same-direction parallel double-screw extruder barrel structure in embodiment 2 of the utility model;
[0031] Figure 5 is Figure 4 enlarged view of B;
[0032] Figure 6 is an external structure schematic view of a same-direction parallel double-screw extruder barrel structure in embodiment 2 of the utility model;
[0033] Figure 7 is an internal structure schematic view of a same-direction parallel double-screw extruder barrel structure in embodiment 3 of the utility model;
[0034] Figure 8 is Figure 7 enlarged view of C;
[0035] Figure 9 is an internal structure schematic view of a same-direction parallel double-screw extruder barrel structure in embodiment 4 of the utility model;
[0036] Figure 10 is Figure 9 enlarged view of D;
[0037] Figure 11 is an internal structure schematic view of a same-direction parallel double-screw extruder barrel structure in embodiment 5 of the utility model.
[0038] Markings in the drawings and corresponding component names:
[0039] 01-sealing end cover, 02-helical groove, 03-medium pipeline, 04-barrel body, 05-feeding port, 06-discharging port, 07-annular protrusion, 08-annular groove, 09-connecting block, 10-locking bolt, 11-hose, 12-pipeline joint, 13-annular clamping block, 14-annular clamping groove, 15-annular threaded mounting block, 16-annular threaded groove, 17-pressure sensor, 18-through hole. DETAILED DESCRIPTION
[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.
[0041] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.
[0042] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0043] In the description of the utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0044] Embodiment 1
[0045] As Figures 1-3 shown, the embodiment provides a co-rotating parallel twin screw extruder barrel structure, which comprises a barrel body 04, a feed inlet 05 and a discharge outlet 06 are arranged on the barrel body 04, a spiral groove 02 is arranged on the outer wall of the barrel body 04, and a medium pipeline 03 is installed in the spiral groove 02; the openings at both ends of the barrel body 04 are both screw-connected with sealing end covers 01, through holes 18 for installing screws are arranged on the sealing end covers 01, and sealing rings are installed on the inner walls of the through holes 18.
[0046] Specifically, the sealing end cover 01 and the barrel body 04 are sealed by a labyrinth sealing structure, which comprises an annular groove 08 arranged on the barrel body 04, and an annular protrusion 07 arranged on the sealing end cover 01 and connected with the annular groove 08. The labyrinth sealing structure is used to connect the sealing end cover 01 and the barrel body 04, which can effectively block the leakage path of the material, form a double sealing structure with the sealing ring, and ensure the sealing performance of the barrel, further preventing the material from leaking from both ends of the barrel.
[0047] The medium in the medium pipe 03 can be hot oil, water, etc. For example, when heating is needed, hot oil is supplied into the medium pipe 03, and when cooling is needed, cold water is supplied into the medium pipe 03. The liquid inlet end of the medium pipe 03 is connected with a joint, and the joint is connected with a pipe for supplying medium. Two branch pipes can be arranged on the joint, and control valves are connected to the two branch pipes. One of the branch pipes is connected with a hot medium supply device, and the other branch pipe is connected with a cold medium supply device (i.e. a device for supplying hot medium (hot oil) and cold medium (cold water)). When heating is needed, the control valve on the branch pipe connected with the hot medium supply device is opened, and the control valve on the branch pipe connected with the cold medium supply device is closed. When cooling is needed, the control valve on the branch pipe connected with the cold medium supply device is opened, and the control valve on the branch pipe connected with the hot medium supply device is closed. In addition, the outlet end of the medium pipe 03 is communicated with a medium receiving bucket.
[0048] In use, the double screw is installed in the barrel body 04, and then the barrel structure is installed on an extruder. The barrel structure is provided with the medium pipe 03 which is spirally wound outside the barrel body 04. The cold medium or hot medium is supplied into the medium pipe 03 to cool or heat the material in the barrel body 04, thereby improving the temperature control efficiency, avoiding uneven plasticization of the material, and improving the product quality. Meanwhile, the sealing end cover 01 improves the sealing performance of the barrel interior, preventing the material from leaking from the two ends of the barrel. Furthermore, the medium pipe 03 is installed on the spiral groove 02 on the outer wall of the barrel body 04, which not only increases the contact area between the medium pipe 03 and the barrel body 04, thereby improving the heating or cooling rate, but also makes the installation of the medium pipe 03 more stable and reduces the space occupied by the barrel body 04.
[0049] Example 2
[0050] As shown in Figures 4-6 This example provides a co-rotating parallel double screw extruder barrel structure, which is different from the barrel structure of example 1 in that the barrel body 04 of this example is composed of a plurality of barrel segments, and adjacent barrel segments are connected through detachable connection structures. The other structural features are the same as those of example 1.
[0051] Specifically, the detachable connection structure includes a connecting block 09 connected to the barrel segment, and the connecting block 09 is provided with a bolt hole. The adjacent barrel segments are connected and fixed through a locking bolt 10 connected in the bolt hole.
[0052] Specifically, a pipe joint 12 is connected to the medium pipeline 03 of each barrel segment, and the medium pipelines 03 between adjacent barrel segments are connected through a connecting pipe. The connecting pipe can be a hose 11, and after the barrel segments are installed, the medium pipelines 03 on adjacent barrel segments are connected through the connecting pipe. In a specific embodiment, the medium pipeline 03 of each barrel segment can be connected to the medium supply structure respectively.
[0053] Compared with example 1, the barrel structure of this example has the advantages that the barrel body 04 adopts a segmented structure design and is spliced by multiple barrel segments. The length of each barrel segment can be controlled according to actual needs. This barrel body 04 structure is convenient to disassemble and install, and when cleaning or maintenance is needed, the barrel segments can be easily disassembled for thorough cleaning of the inside, and damaged parts can also be easily replaced, reducing the difficulty and time cost of cleaning and maintenance.
[0054] Example 3
[0055] As shown in Figures 7-8 , this example provides a co-rotating parallel twin-screw extruder barrel structure. The difference from example 2 is that the detachable connection structure of this example further includes an annular clamping block 13 arranged at one end of the barrel segment and an annular clamping groove 14 arranged at the other end and clamped with the annular clamping block 13. Other structural features are the same as those of example 2.
[0056] Compared with example 2, the advantage of this example is that by arranging the annular clamping block 13 at one end of the barrel segment and the annular clamping groove 14 clamped with the annular clamping block 13 at the other end, the annular clamping block 13 can be clamped into the annular clamping groove 14 of the barrel segment adjacent to it during installation. This not only makes it more convenient for workers to install the locking bolt 10, but also further improves the sealing between the spliced barrel segments, avoiding gaps between the spliced barrel segments and causing material leakage inside the barrel body 04.
[0057] Example 4
[0058] As shown in Figures 9-10 , this example provides a co-rotating parallel twin-screw extruder barrel structure. The difference from example 2 is that the detachable connection structure of this example includes an annular threaded groove 16 arranged at one end of the barrel segment, and an annular threaded mounting block 15 arranged at the other end of the barrel segment and threadedly connected with the annular threaded groove 16. Other structural features are the same as those of example 2.
[0059] Compared with Example 2, the advantage of this example is that the external connection block 09 of the cylinder body 04 does not need to be installed, that is, no flange needs to be installed. Adjacent cylinder sections are installed by threaded connection, which not only improves the connection speed of cylinder sections, but also makes the preparation of the cylinder structure simpler, and the sealing performance of the threaded connection structure is better.
[0060] Example 5
[0061] like Figure 11 As shown, this embodiment provides a co-rotating parallel twin-screw extruder barrel structure. The difference from Embodiment 4 is that a pressure sensor 17 is installed inside the barrel body 04 in this embodiment. Other structural features are the same as in Embodiment 4. In a specific embodiment, a temperature sensor may also be installed inside the barrel body 04. The pressure sensor 17 and the temperature sensor are connected to the control system.
[0062] Compared with Example 4, the advantage of this example is that the pressure sensor 17 can monitor the pressure changes inside the cylinder in real time and transmit the signal to the control system. When the pressure inside the cylinder body 04 exceeds the set pressure value, the control system can take timely measures, such as adjusting the screw speed or introducing coolant or heating liquid into the medium pipeline 03, to ensure the safe operation of the equipment.
[0063] The temperature sensor can monitor the temperature change inside the cylinder in real time and transmit the signal to the control system. When the temperature inside the cylinder body 04 exceeds the set temperature value, the control system can take timely measures, such as introducing coolant or heating liquid into the medium pipeline 03, which can also play a role in ensuring the safe operation of the equipment.
[0064] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A co-rotating parallel twin-screw extruder barrel structure comprising a barrel body (04) provided with a feed port (05) and a discharge port (06), characterized in that, The outer wall of the barrel body (04) is provided with a spiral groove (02), and a medium pipeline (03) is installed in the spiral groove (02); the openings at both ends of the barrel body (04) are both spirally connected with a sealing end cover (01), the sealing end cover (01) is provided with a through hole (18) for installing a screw rod, and a sealing ring is installed on the inner wall of the through hole (18).
2. A co-rotating parallel twin screw extruder barrel structure according to claim 1, characterized in that, The sealing end cover (01) and the barrel body (04) are sealed by a labyrinth seal structure, the labyrinth seal structure comprises an annular groove (08) provided on the barrel body (04), and the sealing end cover (01) is provided with an annular protrusion (07) connected with the annular groove (08).
3. A co-rotating parallel twin screw extruder barrel structure according to claim 1, characterized in that, The barrel body (04) is composed of a plurality of barrel segments, and adjacent barrel segments are connected through a detachable connection structure.
4. A co-rotating parallel twin screw extruder barrel structure according to claim 3, characterized in that, The detachable connection structure comprises a connecting block (09) connected to the barrel segment, and the connecting block (09) is provided with a bolt hole, and adjacent barrel segments are connected and fixed by connecting a locking bolt (10) in the bolt hole.
5. A co-rotating parallel twin screw extruder barrel structure according to claim 3, wherein One end of the barrel segment is provided with an annular clamping block (13), and the other end is provided with an annular clamping groove (14) clamped with the annular clamping block (13).
6. A co-rotating parallel twin screw extruder barrel structure according to claim 3, wherein The detachable connection structure comprises an annular threaded groove (16) provided at one end of the barrel segment, and the other end of the barrel segment is provided with an annular threaded mounting block (15) threadedly connected with the annular threaded groove (16).
7. A co-rotating parallel twin screw extruder barrel structure according to claim 3, wherein The medium pipeline (03) of each barrel segment is respectively communicated with a medium supply structure.
8. A co-rotating parallel twin screw extruder barrel structure according to claim 3, wherein The medium pipeline (03) of each barrel segment is connected with a pipeline joint (12), and the medium pipelines (03) between adjacent barrel segments are connected through a connecting pipe.
9. A co-rotating parallel twin screw extruder barrel structure according to claim 1, wherein The barrel body (04) is internally provided with a pressure sensor (17) and / or a temperature sensor.
10. An extruder characterized by, The barrel structure comprises the barrel structure according to any one of claims 1-9. The barrel structure comprises the barrel structure according to any one of claims 1-9.