Double-screw extruder for pipeline production

Abstract

The utility model relates to the technical field of pipeline production, and discloses a double-screw extruder for pipeline production, which comprises a blanking hopper, the bottom end of the blanking hopper is fixedly connected with a fixed sleeve, the inner side of the bottom end of the fixed sleeve is connected with uniformly distributed limiting balls in a sliding manner, the outer side of the middle end of the fixed sleeve is provided with a spring, and the spring is connected with the fixed sleeve in a sliding manner. A limiting sleeve is slidably connected to the outer side of the fixed sleeve, a range extending chamber is formed in the bottom end of the limiting sleeve, a connecting sleeve is in threaded connection to the outer side of the bottom end of the limiting sleeve, a discharging head is rotatably connected to the inner side of the connecting sleeve, and a clamping groove is formed in the outer wall of the middle end of the discharging head. According to the utility model, the discharge head and the fixed sleeve can be quickly disassembled and replaced by controlling whether the discharge head and the fixed sleeve are fixed or not, and the downtime of a production line can be shortened by quickly replacing the discharge head, so that the production efficiency is improved. Operators can complete replacement of the discharging head in a short time, and production can be recovered as soon as possible.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline production, in particular to a twin-screw extruder for pipeline production. Background Art

[0002] A twin-screw extruder is a device commonly used in pipeline production. Its function is to heat, compress, mix and extrude raw materials (usually plastic particles or other plastic materials) to form pipelines of the required shape. Compared with a single-screw extruder, a twin-screw extruder can usually provide higher production efficiency and more uniform extrusion molding. This is because a twin-screw extruder can better control the temperature, pressure and mixing of raw materials during the processing, so as to better meet the quality requirements of pipeline production. In order to meet the needs of different users, a new type of twin-screw extruder for pipeline production is required to meet the usage of users.

[0003] After retrieval, the existing patent (publication number: CN211518447U) discloses a twin-screw extruder, including a twin-screw extruder, a twin-screw extrusion pipeline, a base is provided on the twin-screw extruder, a melting and stirring pipeline, a gearbox A, a gearbox B, a motor, a spiral extrusion pipe, a feeding hopper installation groove, a feeding pipe. Above the base of the twin-screw extruder, there are a gearbox A and a gearbox B. The gearbox A and the gearbox B are connected to each other. Above one side of the gearbox A, there is a melting and stirring pipeline. A feeding hopper is installed at the top of the melting and stirring pipeline. The feeding hopper continuously feeds materials into the melting and stirring pipeline. The other end of the melting and stirring pipeline is provided with a twin-screw extrusion pipeline. The twin-screw extruder adopts a double-in and double-out circulating cooling mode, so that the cylinder is cooled evenly, is not easy to deform, the wear of the screw is greatly reduced, the service life of the cylinder and the screw can be greatly increased, and two storage bags are used during the production process of the twin-screw extruder, so as to save production time and efficiency and reduce waste generated due to shutdown.

[0004] However, in the actual use process of the above solution, the used discharge head cannot be quickly replaced. If the discharge head needs to be replaced, but the process is cumbersome and time-consuming, it will increase the shutdown time of the production line and reduce the production efficiency.

[0005] In view of this, the utility model proposes a twin-screw extruder for pipeline production. Content of the Utility Model

[0006] The utility model proposes a twin-screw extruder for pipeline production, which solves the problem that the discharge head in the related technology cannot be quickly replaced.

[0007] The technical solution of the utility model is as follows: a twin-screw extruder for pipe production, including a feeding hopper, the bottom end of the feeding hopper is fixedly connected with a fixed sleeve, the inner side of the bottom end of the fixed sleeve is slidably connected with evenly distributed limiting balls, a spring is arranged on the outer side of the middle end of the fixed sleeve, the outer side of the fixed sleeve is slidably connected with a limiting sleeve, an extension chamber is arranged at the bottom end of the limiting sleeve, a connecting sleeve is threadedly connected to the outer side of the bottom end of the limiting sleeve, a discharge head is rotatably connected to the inner side of the connecting sleeve, and a clamping groove is arranged on the outer wall of the middle end of the discharge head.

[0008] Preferably, the top end of the feeding hopper is fixedly connected with a main machine box, and the right side of the main machine box is fixedly connected with a fixed seat.

[0009] Preferably, a first motor is fixedly connected to the top end of the fixed seat, a first screw rod is fixedly connected to the output end of the first motor, and a driving gear is fixedly connected to the left side of the first screw rod.

[0010] Preferably, a driven gear is meshed with the front end of the driving gear, and a second screw rod is fixedly connected to the right side of the driven gear.

[0011] Preferably, a protective cover is fixedly connected to the left side of the main machine box.

[0012] Preferably, a support frame is fixedly connected to the bottom end of the main machine box, and evenly distributed storage cylinders are fixedly connected to the bottom end of the support frame.

[0013] Preferably, a supporting plate is fixedly connected to the middle end inside the storage cylinder, a second motor is fixedly connected to the top end of the supporting plate, and a threaded rod is fixedly connected to the output end of the second motor.

[0014] Preferably, a threaded sleeve is threadedly connected to the outer side of the threaded rod, and a universal wheel is fixedly connected to the bottom end of the threaded sleeve.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] 1. In the utility model, by limiting the limiting balls through the limiting sleeve, the clamping or non-clamping of the limiting balls and the clamping grooves is controlled, so as to control the fixation or non-fixation of the discharge head and the fixed sleeve, thereby realizing the quick disassembly and replacement of the discharge head and the fixed sleeve. And quickly replacing the discharge head can reduce the downtime of the production line, thereby improving production efficiency. The operator can complete the replacement of the discharge head in a short time and resume production as soon as possible;

[0017] 2. In the present utility model, the second motor drives the threaded rod to rotate, thereby driving the threaded sleeve and the universal wheels to move downward simultaneously through the threaded rod, enabling the device to move arbitrarily through the universal wheels, allowing the extruder to move easily within the production workshop, making position adjustments as needed to adapt to different production scenarios and layouts, which can help optimize the production line layout, making the distance and position between devices more reasonable, improving production efficiency, and making better use of the production space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0019] Figure 1 It is a front view three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 It is a schematic diagram of the internal structure of the main chassis of the present utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the support frame of the present utility model;

[0022] Figure 4 It is a sectional structural schematic diagram of the storage cylinder of the present utility model;

[0023] Figure 5 It is a sectional structural schematic diagram of the feeding hopper of the present utility model.

[0024] In the figure: 1. Main chassis; 2. Fixed seat; 3. First motor; 4. First screw; 5. Driving gear; 6. Driven gear; 7. Second screw; 8. Protective cover; 9. Feeding hopper; 10. Fixed sleeve; 11. Limiting ball; 12. Spring; 13. Limiting sleeve; 14. Range extender chamber; 15. Discharge head; 16. Card slot; 17. Connecting sleeve; 18. Supporting plate; 19. Second motor; 20. Threaded rod; 21. Threaded sleeve; 22. Storage cylinder; 23. Support frame; 24. Universal wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0026] Embodiment 1

[0027] The preferred embodiment of the pipe production twin-screw extruder provided by the present utility model is as Figures 1 to 5As shown: The pipe production twin-screw extruder includes a feeding hopper 9. The bottom end of the feeding hopper 9 is fixedly connected with a fixed sleeve 10. The fixed sleeve 10 is fixed through the feeding hopper 9. Inside the bottom end of the fixed sleeve 10, uniformly distributed limiting balls 11 are slidably connected. The limiting balls 11 are limited through the fixed sleeve 10. A spring 12 is arranged on the outer side of the middle end of the fixed sleeve 10. The spring 12 is limited through the fixed sleeve 10. A limiting sleeve 13 is slidably connected to the outer side of the spring 12 and the fixed sleeve 10. A limiting ring is arranged at the contact position between the inner bottom end of the limiting sleeve 13 and the limiting ball 11. The limiting ball 11 is limited through the limiting ring, thereby preventing the limiting ball 11 from moving inside the fixed sleeve 10. The limiting sleeve 13 is limited through the fixed sleeve 10. An extended chamber 14 is opened at the bottom end of the limiting sleeve 13. A connecting sleeve 17 is threadedly connected to the outer side of the bottom end of the limiting sleeve 13. The connecting sleeve 17 is fixed through the limiting sleeve 13. A discharge head 15 is rotatably connected to the inside of the connecting sleeve 17. The discharge head 15 is limited through the connecting sleeve 17. A clamping groove 16 is opened on the outer wall of the middle end of the discharge head 15. The clamping groove 16 is engaged with the limiting ball 11. Thus, the discharge head 15 and the fixed sleeve 10 are connected through their mutual engagement.

[0028] Embodiment 2

[0029] On the basis of Embodiment 1, the preferred embodiment of the pipe production twin-screw extruder provided by the present utility model is as Figures 1 to 5 shown: The top end of the feeding hopper 9 is fixedly connected with a main machine box 1. The feeding hopper 9 is fixed through the main machine box 1. A fixed seat 2 is fixedly connected to the right side of the main machine box 1. The fixed seat 2 is fixed through the main machine box 1.

[0030] In this embodiment, a first motor 3 is fixedly connected to the top end of the fixed seat 2. The first motor 3 is fixed through the fixed seat 2. The output end of the first motor 3 is fixedly connected with a first screw rod 4. The first screw rod 4 is driven to rotate through the first motor 3. A driving gear 5 is fixedly connected to the left side of the first screw rod 4. The driving gear 5 is fixed through the first screw rod 4.

[0031] In this embodiment, a driven gear 6 is meshed and connected to the front end of the driving gear 5. The driven gear 6 is driven to rotate through the driving gear 5. A second screw rod 7 is fixedly connected to the right side of the driven gear 6. The second screw rod 7 is driven to rotate through the driven gear 6.

[0032] In this embodiment, a protective cover 8 is fixedly connected to the left side of the main machine box 1. The protective cover 8 is fixed through the main machine box 1. At the same time, the internal structure is protected through the protective cover 8.

[0033] In this embodiment, a support frame 23 is fixedly connected to the bottom end of the main chassis 1, and the main chassis 1 is supported and fixed by the support frame 23. The bottom end of the support frame 23 is fixedly connected with evenly distributed storage cylinders 22, and the storage cylinders 22 are fixed by the support frame 23.

[0034] In this embodiment, a supporting plate 18 is fixedly connected to the middle of the inner side of the storage cylinder 22, and the supporting plate 18 is fixed by the storage cylinder 22. The top end of the supporting plate 18 is fixedly connected with a second motor 19, and the second motor 19 is supported and fixed by the supporting plate 18. The output end of the second motor 19 is fixedly connected with a threaded rod 20, and the threaded rod 20 is driven to rotate by the second motor 19.

[0035] In this embodiment, a threaded sleeve 21 is threadedly connected to the outer side of the threaded rod 20, and the threaded sleeve 21 is limited by the threaded rod 20. Thus, the threaded sleeve 21 is driven to lift and lower by the rotation of the threaded rod 20. The bottom end of the threaded sleeve 21 is fixedly connected with a universal wheel 24, and the universal wheel 24 is fixed by the threaded sleeve 21.

[0036] The working principle and usage process of the present utility model: When replacing the discharge head 15 of the twin-screw extruder for pipe production, first rotate the connecting sleeve 17. Through the cooperation of the external thread inside the connecting sleeve 17 and the internal thread on the outer side of the bottom end of the fixed sleeve 10, the limiting sleeve 13 is driven to move upward. At the same time, the limiting ring and the range extender chamber 14 inside are driven to move synchronously by the limiting sleeve 13, canceling the engagement with the card slot 16. Thus, the limiting ball 11 can move inward into the range extender chamber 14. Then, insert the new discharge head 15 into the fixed sleeve 10 and rotate the connecting sleeve 17 in the reverse direction. Through the cooperation of the connecting sleeve 17 and the limiting sleeve 13, the limiting sleeve 13 drives the limiting ring and the range extender chamber 14 inside to move synchronously. The limiting ball 11 is squeezed by the limiting ring, forcing the limiting ball 11 to move inward and engage with the card slot 16, thereby fixing the fixed sleeve 10 and the discharge head 15. When moving the main chassis 1, it is necessary to drive the threaded rod 20 to rotate through the second motor 19. Thus, the threaded sleeve 21 is limited by the threaded rod 20, driving the threaded sleeve 21 and the universal wheel 24 to move downward simultaneously, enabling the device to move freely through the universal wheel 24.

[0037] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A twin-screw extruder for pipeline production, comprising a lower hopper (9), characterized in that: The bottom end of the lower hopper (9) is fixedly connected to a fixed sleeve (10), and the inner side of the bottom end of the fixed sleeve (10) is slidably connected to uniformly distributed limiting balls (11), and a spring (12) is arranged on the outer side of the middle end of the fixed sleeve (10), and the spring (12) and the outer side of the fixed sleeve (10) are slidably connected to a limiting sleeve (13), and the bottom end of the limiting sleeve (13) is provided with an extended range chamber (14), and the outer side of the bottom end of the limiting sleeve (13) is threadedly connected to a connecting sleeve (17), and the inner side of the connecting sleeve (17) is rotatably connected to a discharging head (15), and the outer wall of the middle end of the discharging head (15) is provided with a slot (16).

2. The twin-screw extruder for pipe production according to claim 1, characterized in that: The top of the lower hopper (9) is fixedly connected to a main box (1), and the right side of the main box (1) is fixedly connected to a fixing seat (2).

3. The twin-screw extruder for pipe production according to claim 2, characterized in that: The top end of the fixing seat (2) is fixedly connected to a first motor (3), the output end of the first motor (3) is fixedly connected to a first screw rod (4), and the left side of the first screw rod (4) is fixedly connected to a driving tooth (5).

4. The twin-screw extruder for pipe production according to claim 3, characterized in that: The front end of the driving tooth (5) is meshingly connected with a driven tooth (6), and the right side of the driven tooth (6) is fixedly connected with a second screw rod (7).

5. The twin-screw extruder for pipe production according to claim 2, characterized in that: A protective cover (8) is fixedly connected to the left side of the main chassis (1).

6. The twin-screw extruder for pipe production according to claim 2, characterized in that: The bottom end of the main chassis (1) is fixedly connected to a support frame (23), and the bottom end of the support frame (23) is fixedly connected to evenly distributed storage cylinders (22).

7. The twin-screw extruder for pipe production according to claim 6, characterized in that The inner middle end of the storage tube (22) is fixedly connected to a support plate (18), the top end of the support plate (18) is fixedly connected to a second motor (19), and the output end of the second motor (19) is fixedly connected to a threaded rod (20).

8. The twin-screw extruder for pipe production according to claim 7, characterized in that The outer side of the threaded rod (20) is threadedly connected to a threaded sleeve (21), and the bottom end of the threaded sleeve (21) is fixedly connected to a universal wheel (24).

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