Feed hopper for double-screw extruder

Abstract

The utility model relates to the field of twin-screw extruders, and discloses a feed hopper for a twin-screw extruder, which comprises a feed shell, a cover plate is arranged on the upper surface of the feed shell, a cleaning component is arranged on the inner wall of the feed shell, a disassembly and assembly component is arranged at the right end of the cleaning component, a discharge shell is fixedly connected to the lower surface of the feed shell, and the discharge shell is fixedly connected to the lower surface of the discharge shell. And a discharging assembly is arranged on the inner wall of the discharging shell, the cleaning assembly comprises a rotating rod, the rotating rod is rotationally connected to the upper surface of the feeding shell in a penetrating mode, a threaded rod is rotationally connected to the upper surface of the rotating rod in a penetrating mode, and a first through groove is formed in the right surface of the bottom end of the rotating rod. According to the feeding device, the inner wall of the feeding hopper can be cleaned through the arranged cleaning assembly, product waste is avoided, meanwhile, the distance between the scraping plate and the feeding hopper can be adjusted by rotating the threaded rod, the situation that the scraping plate is abraded due to long-time contact with the feeding hopper is avoided, the scraping plate can be replaced by disassembling and assembling the assembly, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the field of twin-screw extruders, in particular to a feed hopper for a twin-screw extruder. Background Art

[0002] A twin-screw extruder is a device used to process materials such as plastics, rubber, and food. It uses two rotating screws to gradually pressurize, heat, and extrude the raw materials from the feed port to form the desired shape or profile. When it is in use, when the material enters the extruder through the feed hopper, a lot of material may adhere to the inner wall of the feed hopper, resulting in product waste.

[0003] After searching, Chinese patent announcement number: CN217293428U discloses a feed hopper of a twin-screw extruder, including a bucket body, a rotating seat is provided at the upper end of the bucket body, a cover plate is rotatably connected to the rotating seat, a damping gasket is provided at the rotation connection between the cover plate and the rotating seat, a rotating rod is rotatably connected to the cover plate, two symmetrically arranged threaded rods are provided on the outer wall of the rotating rod, a connecting rod is provided on the outer wall of the threaded rod, a scraping mechanism for scraping materials is provided at the end of the connecting rod, and a moving mechanism for moving the scraping mechanism is provided between the connecting rod and the threaded rod. The utility model rotates the turntable by a handle to rotate the turntable with the rotating rod, so that the rotating rod drives the two scrapers to rotate, scrapes the materials on the inner wall of the bucket body, avoids manual cleaning, reduces the workload of workers, and improves work efficiency.

[0004] In the above technology, although the inner wall of the feed hopper can be cleaned through its designed structure, when it is used, the cover needs to be opened and the scraper needs to be moved together, which is too troublesome to operate. At the same time, when unfolding the scraper, the hand needs to be placed on the inner wall of the feed hopper to operate. The space on the inner wall of the feed hopper is not large, which may be too troublesome for workers to operate and the practicality is too low. Therefore, a feed hopper for a twin-screw extruder is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a feed hopper for a twin-screw extruder, aiming to improve the problem in the prior art that some feed hoppers for twin-screw extruders may stick to the product and cause waste when in use.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a feed hopper for a twin-screw extruder comprises a feed shell, a cover plate is arranged on the upper surface of the feed shell, a cleaning assembly is arranged on the inner wall of the feed shell, a disassembly assembly is arranged on the right end of the cleaning assembly, a discharge shell is fixedly connected to the lower surface of the feed shell, a discharge assembly is arranged on the inner wall of the discharge shell, the cleaning assembly comprises a rotating rod, the rotating rod passes through and is rotatably connected to the upper surface of the feed shell, a threaded rod passes through and is rotatably connected to the upper surface of the rotating rod, a through groove 1 is provided on the right surface of the bottom end of the rotating rod, and a telescopic rod is fixedly connected to the upper side of the right surface of the rotating rod adjacent to the through groove 1.

[0007] As a further description of the above technical solution:

[0008] The material discharge assembly comprises a round rod, which penetrates and is rotatably connected to the front surface of the material discharge shell. The outer wall of the round rod is fixedly connected to a material discharge roller, and the material discharge roller rotates on the inner wall of the material discharge shell.

[0009] As a further description of the above technical solution:

[0010] The cleaning assembly also includes a rectangular plate, the left end of which is slidably connected to the inner wall of the first through slot, the left end of which is threadedly connected to the outer wall of the threaded rod, and the front surface of the rectangular plate is provided with a second through slot.

[0011] As a further description of the above technical solution:

[0012] The disassembly and assembly assembly comprises a fixed plate, which is fixedly connected to the right surface of the telescopic rod, a clamping block is fixedly connected to the front surface of the fixed plate, a scraper is contacted to the right surface of the fixed plate, and the right surface of the scraper contacts the inner wall of the feed shell.

[0013] As a further description of the above technical solution:

[0014] The right surface of the scraper is configured as an arc-shaped surface.

[0015] As a further description of the above technical solution:

[0016] The inner wall of the scraper is provided with a clamping groove, and the clamping block contacts the inner wall of the clamping groove.

[0017] As a further description of the above technical solution:

[0018] The left surface of the fixed plate is fixedly connected with a connecting rod, the front surface of the left end of the connecting rod is fixedly connected with a sliding rod, and the left end of the sliding rod is slidably connected to the inner wall of the second through slot.

[0019] As a further description of the above technical solution:

[0020] The discharge assembly also includes a motor, which is fixedly connected to the front surface of the discharge shell, and the rear surface of the motor is fixedly connected to the front surface of the round rod. The inner wall of the discharge shell is fixedly connected with a guide plate, and the lower surface of the guide plate contacts the outer wall of the discharge roller.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the inner wall of the feed hopper can be cleaned by the cleaning component, which avoids product waste and improves the cleaning effect. At the same time, the distance between the scraper and the feed hopper can be adjusted by rotating the threaded rod to avoid the scraper from being worn due to long-term contact with the feed hopper. The scraper can also be replaced by disassembling and assembling the component, which improves practicality.

[0023] 2. In the utility model, the discharging assembly is provided to discontinue discharging of the product, thereby avoiding excessive accumulation of product at the connection between the feed hopper and the extruder, which may lead to blockage, thereby improving processing efficiency and practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device in the utility model;

[0025] Figure 2 It is a schematic diagram of the split cross section of the three-dimensional structure of the feed shell and the discharge shell in the utility model;

[0026] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged three-dimensional structure of the A region;

[0027] Figure 4 It is a schematic diagram of the disassembly of the three-dimensional structure of the fixed plate and the scraper in the utility model.

[0028] Legend:

[0029] 1. Feed shell; 2. Discharge shell; 3. Cleaning assembly; 31. Rotating rod; 32. Threaded rod; 33. Rectangular plate; 34. Telescopic rod; 35. Scraper; 36. Connecting rod; 37. Through slot 1; 38. Slide rod; 39. Through slot 2; 4. Discharging assembly; 41. Motor; 42. Round rod; 43. Guide plate; 44. Discharging roller; 5. Cover plate; 6. Disassembly and assembly assembly; 61. Fixed plate; 62. Block; 63. Connecting slot. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a feed hopper for a twin-screw extruder, including a feed shell 1, a cover plate 5 is arranged on the upper surface of the feed shell 1, the cover plate 5 is in the prior art, which can prevent the product from flying out when the product is stirred, and can also remove dust, a cleaning component 3 is arranged on the inner wall of the feed shell 1, a disassembly component 6 is arranged on the right end of the cleaning component 3, a discharge shell 2 is fixedly connected to the lower surface of the feed shell 1, a discharge component 4 is arranged on the inner wall of the discharge shell 2, the cleaning component 3 includes a rotating rod 31, the rotating rod 31 penetrates and is rotatably connected to the upper surface of the feed shell 1, and the upper surface of the rotating rod 31 A threaded rod 32 is provided through the rotating connection, which is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. At the same time, it has the characteristics of self-locking up and down to ensure the stability of the structural connection. A through groove 37 is provided on the right surface of the bottom end of the rotating rod 31, and a telescopic rod 34 is fixedly connected to the upper side of the right surface of the rotating rod 31 adjacent to the through groove 37. The telescopic rod 34 is a prior art, which is connected by multiple sets of rods, and the connection distance of the multiple sets of rods can be adjusted at will to ensure that the scraper 35 can only move horizontally left and right.

[0032] Reference Figure 1 - Figure 2 The discharge assembly 4 includes a round rod 42, which penetrates and is rotatably connected to the front surface of the discharge shell 2. A discharge roller 44 is fixedly connected to the outer wall of the round rod 42. There are two sets of symmetrical notches on the upper and lower surfaces of the discharge roller 44. The product can enter the notch and then be sent out, which can achieve the purpose of intermittent feeding and avoid blockage. The discharge roller 44 rotates on the inner wall of the discharge shell 2.

[0033] Reference Figure 2 - Figure 3 The cleaning assembly 3 also includes a rectangular plate 33, the left end of which is slidably connected to the inner wall of the through groove 1 37. When the threaded rod 32 is rotated, the rectangular plate 33 moves upward or downward, so that the sliding rod 38 slides on the inner wall of the through groove 2 39 and moves horizontally left and right along the slope of the through groove 2 39, so that the distance between the scraper 35 and the inner wall of the feed shell 1 can be adjusted. The left end of the rectangular plate 33 is threadedly connected to the outer wall of the threaded rod 32, and a through groove 2 39 is provided on the front surface of the rectangular plate 33.

[0034] Reference Figure 2 , Figure 4 The disassembly and assembly component 6 includes a fixed plate 61, which is fixedly connected to the right surface of the telescopic rod 34. A clamping block 62 is fixedly connected to the front surface of the fixed plate 61. The clamping block 62 is made of rubber and has a certain elasticity. When squeezed, it will deform and return to its original state when squeezed. The right surface of the fixed plate 61 contacts the scraper 35. The right surface of the scraper 35 contacts the inner wall of the feed shell 1. The right surface of the scraper 35 is set to an arc surface. The arc surface of the scraper 35 has the same arc as the inner wall of the feed shell 1 to ensure the fit and make the cleaning more thorough. The inner wall of the scraper 35 is provided with a clamping groove 63, and the clamping block 62 contacts the inner wall of the clamping groove 63.

[0035] Reference Figure 2 - Figure 3 The left surface of the fixed plate 61 is fixedly connected with a connecting rod 36, and the front surface of the left end of the connecting rod 36 is fixedly connected with a sliding rod 38. The left end of the sliding rod 38 is slidably connected to the inner wall of the through groove 2 39. The through groove 2 39 has a certain slope to ensure that the sliding rod 38 will move along the slope of the through groove 2 39.

[0036] Reference Figure 1 - Figure 2 The discharge assembly 4 also includes a motor 41. The motor 41 is a prior art and can be implemented by technicians in this field. Since it is a prior art, it will not be described in detail in this case. The motor 41 is fixedly connected to the front surface of the discharge shell 2, and the rear surface of the motor 41 is fixedly connected to the front surface of the round rod 42. The inner wall of the discharge shell 2 is fixedly connected with a guide plate 43. The guide plate 43 can ensure that the product enters the gap of the discharge roller 44 smoothly, thereby improving practicality. The lower surface of the guide plate 43 contacts the outer wall of the discharge roller 44.

[0037] Working principle: When in use, the cover plate 5 can be opened to discharge the material, and the material will fall into the gap on the upper surface of the discharge component 4 through the guide plate 43. During the discharge process, the motor 41 can be started, and the motor 41 will drive the discharge roller 44 to rotate through the round rod 42. The discharge roller 44 will deliver the product on its inner wall into the interior of the extruder, and at the same time, it will complete intermittent feeding to avoid product accumulation and blockage.

[0038] When it is necessary to clean the inner wall of the feed shell 1, first ensure that the scraper 35 is in close contact with the inner wall of the feed shell 1. At this time, you only need to rotate the rotating rod 31. The rotating rod 31 will drive the scraper 35 to rotate through the rectangular plate 33 and the telescopic rod 34. The scraper 35 will scrape the inner wall of the feed shell 1 to prevent the product from sticking to the inner wall of the feed shell 1. This method can also be used to stir the product and break it up to make the feeding smoother. When stirring, avoid friction between the scraper 35 and the feed shell 1 for a long time. The threaded rod 32 can be rotated. At this time, the rectangular plate 33 threadedly connected to the outer wall of the threaded rod 32 will move on the inner wall of the through groove 1 37, the sliding rod 38 will slide on the inner wall of the through groove 2 39, and move along the slope of the through groove 2 39, the sliding rod 38 will drive the scraper 35 to move through the connecting rod 36, and the telescopic rod 34 will also shrink at this time, so that the scraper 35 will not contact the inner wall of the feed shell 1 during stirring, and no friction will be generated, thereby avoiding wear of the feed shell 1, and the position of the scraper 35 will also be close to the center of the feed shell 1, so that the stirring is more uniform and the practicality is improved.

[0039] When the scraper 35 needs to be removed, the cover 5 is opened, and then the scraper 35 is pulled. At this time, the block 62 will be squeezed and deformed and separated from the inner wall of the connecting rod 36, so that the scraper 35 can be removed, which improves practicality. When installing, the coordination between the structures is the same as above.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A feed hopper for a twin-screw extruder, comprising a feed housing (1), characterized in that: The upper surface of the feed shell (1) is provided with a cover plate (5), the inner wall of the feed shell (1) is provided with a cleaning assembly (3), the right end of the cleaning assembly (3) is provided with a disassembly assembly (6), the lower surface of the feed shell (1) is fixedly connected with the discharge shell (2), the inner wall of the discharge shell (2) is provided with a discharge assembly (4), the cleaning assembly (3) comprises a rotating rod (31), the rotating rod (31) penetrates and is rotatably connected to the upper surface of the feed shell (1), a threaded rod (32) penetrates and is rotatably connected to the upper surface of the rotating rod (31), a through groove (37) is provided on the right surface of the bottom end of the rotating rod (31), and a telescopic rod (34) is fixedly connected to the upper side of the right surface of the rotating rod (31) adjacent to the through groove (37).

2. The feed hopper for a twin-screw extruder according to claim 1, characterized in that: The discharge assembly (4) comprises a round rod (42), the round rod (42) penetrates and is rotatably connected to the front surface of the discharge shell (2), the outer wall of the round rod (42) is fixedly connected to a discharge roller (44), and the discharge roller (44) rotates on the inner wall of the discharge shell (2).

3. The feed hopper for a twin-screw extruder according to claim 1, characterized in that: The cleaning assembly (3) further comprises a rectangular plate (33), the left end of which is slidably connected to the inner wall of the first through slot (37), the left end of which is threadedly connected to the outer wall of the threaded rod (32), and the front surface of the rectangular plate (33) is provided with a second through slot (39).

4. The feed hopper for a twin-screw extruder according to claim 1, characterized in that: The disassembly assembly (6) comprises a fixed plate (61), the fixed plate (61) is fixedly connected to the right surface of the telescopic rod (34), a clamping block (62) is fixedly connected to the front surface of the fixed plate (61), the right surface of the fixed plate (61) contacts a scraper (35), and the right surface of the scraper (35) contacts the inner wall of the feed shell (1).

5. The feed hopper for a twin-screw extruder according to claim 4, characterized in that: The right surface of the scraper (35) is configured as an arc-shaped surface.

6. The feed hopper for a twin-screw extruder according to claim 5, characterized in that: The scraper (35) has an inner wall provided with a clamping groove (63), and the clamping block (62) contacts the inner wall of the clamping groove (63).

7. The feed hopper for a twin-screw extruder according to claim 4, characterized in that: The left surface of the fixed plate (61) is fixedly connected to a connecting rod (36), the front surface of the left end of the connecting rod (36) is fixedly connected to a sliding rod (38), and the left end of the sliding rod (38) is slidably connected to the inner wall of the second through groove (39).

8. The feed hopper for a twin-screw extruder according to claim 2, characterized in that: The discharge assembly (4) further comprises a motor (41), wherein the motor (41) is fixedly connected to the front surface of the discharge shell (2), the rear surface of the motor (41) is fixedly connected to the front surface of the round rod (42), the inner wall of the discharge shell (2) is fixedly connected to a guide plate (43), and the lower surface of the guide plate (43) contacts the outer wall of the discharge roller (44).

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