Double-screw extruder with anti-blocking feeding structure

Abstract

The utility model discloses a twin-screw extruder with an anti-clogging feeding structure, which relates to the field of screw extruders and comprises an extruder main body, a feeding hopper is fixedly mounted at the top of the extruder main body, a feeding hole is formed in the outer wall of the feeding hopper, a feeding hole is formed in the bottom of the feeding hopper, and the anti-clogging feeding structure is arranged in the feeding hole. An anti-blocking mechanism used for blocking raw materials is arranged in the feeding hopper and comprises a limiting block fixedly installed on the inner wall of the feeding hopper, a sliding rod is fixedly installed on the outer wall of the limiting block, the outer wall of the sliding rod is sleeved with a vibration spring, and a screen connected with the feeding hopper in a sliding mode is installed on the outer wall of a sliding plate in a sliding mode. Protruding blocks are arranged on the outer wall of the screen, and a smashing mechanism is arranged at the top of the screen. According to the double-screw extruder with the anti-blocking feeding structure, the anti-blocking mechanism and the crushing mechanism are arranged in the feeding hopper, so that large raw material particles are effectively prevented from blocking the screw parts of the extruder, the efficiency of raw materials passing through a screen is improved, and the extrusion quality and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw extruder technical field, concretely is a double screw extruder with anti -blocking feeding structure. BACKGROUND

[0002] The extruder can make the material fully plasticize and uniformly mix by the pressure and shearing force generated by the screw rotation, and is widely used in the blending modification of general plastics, engineering plastics, thermoplastic rubber and other polymer materials, and the processing field of special fibers and special adhesives, and has good feeding performance, mixing plasticizing performance, exhaust performance and extrusion stability, and has been widely used in the forming processing of extruded products.

[0003] In the prior art, a parallel double screw extruder is disclosed in Chinese patent No. CN202420434229.5, which includes a material setting mechanism. When the material is discharged from the top opening of the material pipe, the weight of the material will cause the dustproof cover to drive the top rod to compress the connecting spring, and the top rod will press the switch of the control switch. When the control switch is opened, the first servo motor can drive the half gear to rotate, and the half gear will drive the connecting plate to move outward of the material pipe, and then drive the blocking plate to move outward of the material pipe. When the blocking plate moves, the material pipe and the extruder body are connected, and the material on the blocking plate falls into the extruder body for processing, ensuring the stability and consistency of the extrusion process, and improving the precision and quality of the material processing.

[0004] In combination with the above-mentioned material, it is found that the prior art lacks a structure for screening the feed hopper, which causes the machine to be blocked when the larger particles of raw material enter the interior of the extruder, thereby causing great inconvenience to production and seriously affecting production efficiency. Therefore, further improvement is needed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a double screw extruder with anti -blocking feeding structure to solve the problem of lacking a structure for screening the feed hopper in the above-mentioned background technology, which causes the machine to be blocked when the larger particles of raw material enter the interior of the extruder, thereby causing great inconvenience to production and seriously affecting production efficiency.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: A double screw extruder with anti -blocking feeding structure is provided with the extruder main part, the extruder main part top fixed mounting has the feeding hopper, and the feeding hopper outer wall is equipped with the feed inlet, the feeding hopper bottom is equipped with the feeding port, the feeding hopper inside is equipped with the anti -blocking mechanism for the raw material blockage,

[0007] The anti -blocking mechanism includes the limiting block fixed mounting in the feeding hopper inner wall, and the limiting block outer wall is fixedly installed with the slide rod, and the slide rod outer wall is equipped with the vibration spring, the slide plate outer wall is equipped with the screen mesh that is slidably connected with the feeding hopper, and the screen mesh outer wall is equipped with the lug, the screen mesh top is equipped with the crushing mechanism for crushing raw materials.

[0008] Further, the bottom of the feeding hopper is designed as an inverted circular table, and the feeding hopper bottom feed inlet is communicated with the extruder.

[0009] Further, the limiting block is provided with multiple groups at equal angles on the inner wall of the feeding hopper, and the slide rod is designed in correspondence with the limiting block, and the length of the slide rod corresponds to the spacing between the two limiting blocks.

[0010] Further, the outer wall of the screen mesh top is fitted with the outer wall of the limiting block, and the screen mesh is located between the two limiting blocks, and the outer diameter of the screen mesh corresponds to the inner diameter of the feeding hopper.

[0011] Further, the lug is designed as a trapezoidal shape as a whole, and multiple groups of lugs are provided at equal angles on the outer wall of the screen mesh top.

[0012] Further, the crushing mechanism includes a driving device fixedly installed on the top of the feeding hopper, and a rotating shaft is fixedly installed at the end of the driving device, and a crushing knife and a rotating block are fixedly installed on the outer wall of the rotating shaft.

[0013] Further, the length of the rotating shaft is less than the spacing between the top of the screen mesh and the top of the feeding hopper, the crushing knife is located on the upper part of the rotating block, and the diameter of the crushing knife is less than the inner diameter of the feeding hopper, and multiple groups of crushing knives are provided at equal angles on the outer wall of the rotating shaft.

[0014] Further, the length of the rotating block is less than the spacing between the outer wall of the limiting block and the outer wall of the rotating shaft, the outer wall of the bottom of the rotating block is fitted with the inclined surface of the lug, and multiple groups of rotating blocks are provided at equal angles on the outer wall of the rotating shaft.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The double screw extruder with the anti-blocking feeding structure, through the crushing mechanism arranged in the feeding hopper, raw materials enter the feeding hopper from the feeding port during feeding, the driving device is started, the driving device drives the rotating shaft to rotate, the rotating shaft drives the crushing cutter on the outer wall to fully crush the large raw material blocks that cannot pass through the screen, thereby effectively preventing the large raw material particles from blocking at the screw part of the extruder, and the extrusion quality and efficiency are improved;

[0017] Further, through the screen arranged in the feeding hopper, raw materials enter the feeding hopper from the feeding port during feeding and fall to the outer wall of the screen, at this time, the smaller raw material particles pass through the feeding port and enter the lower extruder body to be extruded and formed, and the larger raw material particles are retained in the feeding hopper by the screen, the rotating shaft is driven to rotate by the driving device, the rotating shaft drives the rotating block to continuously extrude and release the protruding block, so that the screen reciprocates up and down along the outer wall of the sliding rod under the action of the vibration spring and reciprocally knocks the top limiting block, thereby realizing continuous vibration of the screen, accelerating the passing efficiency of the raw materials through the screen, and effectively preventing the raw materials from blocking the extruder body. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic view of the utility model;

[0019] Figure 2 It is an extruder body section structure schematic view of the utility model;

[0020] Figure 3 It is a feeding hopper section structure schematic view of the utility model;

[0021] Figure 4 It is a screen section structure schematic view of the utility model;

[0022] Figure 5 It is an anti-blocking mechanism structure schematic view of the utility model;

[0023] Figure 6 It is a crushing mechanism structure schematic view of the utility model.

[0024] In the drawing: 1, extruder body; 2, feeding hopper; 21, feeding port; 22, feeding port; 3, driving device; 4, rotating shaft; 41, crushing cutter; 42, rotating block; 5, screen; 51, sliding hole; 52, protruding block; 6, sliding rod; 61, limiting block; 62, vibration spring. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0026] Embodiment one: please refer to Figures 1-6 The utility model provides the following technical scheme: a double screw extruder with anti -blocking feeding structure, including extruder main part 1, the top fixed mounting of extruder main part 1 has feeding hopper 2, and feeding hopper 2 outer wall is equipped with feed inlet 21, and feeding hopper 2 bottom is equipped with feeding port 22, and feeding hopper 2 inside is equipped with the anti -blocking mechanism for the raw material block, and the anti -blocking mechanism includes the limiting block 61 of fixed mounting in the inner wall of feeding hopper 2, and limiting block 61 outer wall is fixedly installed with slide rod 6, and slide rod 6 outer wall is equipped with vibration spring 62, and the slide plate outer wall is slidably installed with the screen 5 of sliding connection with feeding hopper 2, and the outer wall of screen 5 is equipped with lug 52, and the bottom of feeding hopper 2 is designed as inverted circular table, and the bottom feed inlet 21 of feeding hopper 2 is communicated with extruder, limiting block 61 is provided with multiple groups on the inner wall of feeding hopper 2 at equal angles, and slide rod 6 is designed in correspondence with limiting block 61, and the length of slide rod 6 corresponds to the spacing between the two limiting blocks 61, a plurality of sliding holes 51 corresponding to slide rod 6 are formed on the outer wall of screen 5, the outer wall of screen 5 top is attached to the outer wall of limiting block 61, and screen 5 is located between the two limiting blocks 61, and the outer diameter of screen 5 corresponds to the inner diameter of feeding hopper 2, the overall lug 52 is designed as trapezoidal, and a plurality of groups of lugs 52 are provided on the outer wall of screen 5 top at equal angles.

[0027] When working, first start extruder main part 1, by setting screen 5 in feeding hopper 2, raw materials enter feeding hopper 2 from feed inlet 21 during feeding, and fall to the outer wall of screen 5, at this time, smaller raw material particles pass through feeding port 22 from screen 5 into the lower extruder main part 1, and are extruded and formed by extruder main part 1, larger raw material particles are screened and retained in the inner part of feeding hopper 2 by screen 5, the driving device 3 drives the rotation of the rotating shaft 4, the rotating shaft 4 drives the rotation of the rotating block 42, the bottom of the rotating block 42 continuously extrudes and releases the top of the plurality of lugs 52 while rotating, so that the screen 5 reciprocally slides up and down along the outer wall of the plurality of slide rods 6 under the action of the vibration spring 62, and the top outer wall of the screen 5 reciprocally knocks the top limiting block 61, so as to realize the continuous vibration of the screen 5, the vibration of the screen 5 accelerates the efficiency of the raw materials passing through the screen 5, and effectively prevents the raw materials from blocking the extruder main part 1.

[0028] The embodiment two is based on the embodiment one, and further discloses a crushing mechanism, and the specific structure is as follows: the top of the screen 5 is provided with a crushing mechanism for crushing raw materials, the crushing mechanism comprises a driving device 3 fixedly installed at the top of the feeding hopper 2, the end of the driving device 3 is fixedly installed with a rotating shaft 4, the outer wall of the rotating shaft 4 is fixedly installed with a crushing knife 41 and a rotating block 42, the length of the rotating shaft 4 is less than the spacing between the top of the screen 5 and the top of the feeding hopper 2, the crushing knife 41 is located at the upper portion of the rotating block 42, the diameter of the crushing knife 41 is less than the inner diameter of the feeding hopper 2, a plurality of groups of the crushing knife 41 are arranged at equal angles on the outer wall of the rotating shaft 4, the length of the rotating block 42 is less than the spacing between the outer wall of the limiting block 61 and the outer wall of the rotating shaft 4, the bottom outer wall of the rotating block 42 is attached to the inclined surface outer wall of the protruding block 52, and a plurality of groups of the rotating block 42 are arranged at equal angles on the outer wall of the rotating shaft 4.

[0029] When feeding, the raw materials enter the feeding hopper 2 from the feeding port 21, the driving device 3 is started, the driving device 3 drives the rotating shaft 4 to rotate, the rotating shaft 4 drives a plurality of groups of the crushing knife 41 on the outer wall of the rotating shaft 4 to fully crush and stir the larger raw material particles that cannot pass through the screen 5 in the feeding hopper 2, so that the larger raw material particles pass through the screen 5 and enter the extruder main body 1 below to be extruded and formed, thereby effectively preventing the larger raw material particles from causing blockage at the screw portion of the extruder main body 1, avoiding inconvenience to production work, and improving the extrusion quality and efficiency.

[0030] In the description of the utility model, it needs to explain, unless another explicit stipulation and limitation, term "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0031] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A double screw extruder provided with an anti-blocking feeding structure, comprising an extruder body (1), a feeding hopper (2) fixedly installed on the top of the extruder body (1), a feeding opening (21) formed in the outer wall of the feeding hopper (2), a feeding opening (22) formed in the bottom of the feeding hopper (2), and an anti-blocking mechanism arranged inside the feeding hopper (2) for blocking raw materials. characterized in that The anti-blocking mechanism comprises a limiting block (61) fixedly installed on the inner wall of the feeding hopper (2), a slide rod (6) fixedly installed on the outer wall of the limiting block (61), a vibration spring (62) sleeved on the outer wall of the slide rod (6), a screen (5) slidably connected with the feeding hopper (2) and slidably installed on the outer wall of the slide rod (6), and a protrusion (52) arranged on the outer wall of the screen (5), and a crushing mechanism arranged on the top of the screen (5) for crushing raw materials.

2. A twin screw extruder provided with an anti-blocking feeding structure according to claim 1, characterized in that: The bottom of the feeding hopper (2) is designed in an inverted circular table shape, and the feeding opening (21) in the bottom of the feeding hopper (2) is connected with the extruder.

3. A twin screw extruder provided with an anti-blocking feeding structure according to claim 1, characterized in that: A plurality of groups of limiting blocks (61) are arranged at equal angles on the inner wall of the feeding hopper (2), the slide rod (6) is designed in correspondence with the limiting blocks (61), the length of the slide rod (6) corresponds to the spacing between the two groups of limiting blocks (61), and a plurality of groups of sliding holes (51) corresponding to the slide rod (6) are formed in the outer wall of the screen (5).

4. A twin screw extruder provided with an anti-blocking feeding structure according to claim 1, characterized in that: The outer wall of the top of the screen (5) is attached to the outer wall of the limiting block (61), the screen (5) is located between the two groups of limiting blocks (61), and the outer diameter of the screen (5) corresponds to the inner diameter of the feeding hopper (2).

5. A twin screw extruder provided with a anti-jamming feeding structure according to claim 1, characterized in that: The protrusion (52) is designed in a trapezoidal shape, and a plurality of groups of protrusions (52) are arranged at equal angles on the outer wall of the top of the screen (5).

6. A twin screw extruder provided with an anti-jamming feeding structure according to claim 1, characterized in that: The crushing mechanism comprises a driving device (3) fixedly installed on the top of the feeding hopper (2), a rotating shaft (4) fixedly installed on the end of the driving device (3), and a crushing knife (41) and a rotating block (42) fixedly installed on the outer wall of the rotating shaft (4).

7. A twin screw extruder provided with an anti-jamming feeding structure according to claim 6, characterized in that: The length of the rotating shaft (4) is less than the spacing between the top of the screen (5) and the top of the feeding hopper (2), the crushing knife (41) is located on the upper part of the rotating block (42), the diameter of the crushing knife (41) is less than the inner diameter of the feeding hopper (2), and a plurality of groups of crushing knives (41) are arranged at equal angles on the outer wall of the rotating shaft (4).

8. A twin screw extruder provided with an anti-jamming feeding structure according to claim 6, characterized in that: The length of the rotating block (42) is less than the spacing between the outer wall of the limiting block (61) and the outer wall of the rotating shaft (4), the outer wall of the bottom of the rotating block (42) is attached to the outer wall of the inclined surface of the protrusion (52), and a plurality of groups of rotating blocks (42) are arranged at equal angles on the outer wall of the rotating shaft (4).

Images