Energy-saving and environment-friendly double-screw extruder

Abstract

The utility model discloses an energy-saving and environment-friendly double-screw extruder, which belongs to the technical direction of plastic processing, comprises a rod body, a front-section spiral piece, a middle-section spiral piece, a tail-section spiral piece and a cavity, and is characterized in that a shaft shoulder is arranged at the left end of the rod body, a long shaft is arranged at the right end of the shaft shoulder, four groove sliding rails are arranged on the periphery of the long shaft, and a screw rod is arranged in the cavity. A sleeve on the long shaft is connected with a front-section spiral piece, a first groove hole is formed in the middle of the front-section spiral piece, four first convex grooves are formed in the first groove hole, the first convex grooves are connected with groove sliding rails in a meshed mode, so that the front-section spiral piece can be installed in the rod body along the groove sliding rails, the left end of the front-section spiral piece is fixedly connected with a shaft shoulder in an abutting mode, and the right end of the front-section spiral piece is fixedly connected with the shaft shoulder. The left end of the middle-section spiral piece is fixedly connected with the front-section spiral piece in an abutting mode, the left end of the tail-section spiral piece is fixedly connected with the middle-section spiral piece in an abutting mode, and the problem that screws of an existing double-screw extruder need to be replaced frequently is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic processing, and specifically relates to an energy-saving and environment-friendly twin-screw extruder. Background Art

[0002] The twin-screw extruder consists of a main machine, a transmission device, a feeding device, a heating device and a control system. Its working principle is to feed solid plastic pellets or plasticized molten plastic into the barrel through the rotation of the screw, and to melt, plasticize and fuse the plastic through heating and shear mixing. In the process of screw rotation, the plastic is evenly extruded through the barrel and the mold to form a product.

[0003] For the twin-screw extruders currently on the market, one of the most important structures is the two metal screws. The metal screws are processed with multiple sections of threads with different leads, shapes, and pitches. Due to the different parameters of each section of the thread, the wear of each section of the metal screw during operation is also different. This causes a certain section of the thread in a screw to be severely worn, and the entire screw needs to be replaced, which is more costly and cumbersome to replace.

[0004] This phenomenon has become a problem that needs to be solved urgently by people in this field. Utility Model Content

[0005] The utility model aims to provide an energy-saving and environmentally friendly twin-screw extruder for existing devices to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: an energy-saving and environmentally friendly twin-screw extruder, comprising a rod body, a front-stage spiral component, a middle-stage spiral component, a terminal spiral component, and a cavity, characterized in that: a shaft shoulder is provided at the left end of the rod body, a long axis is provided at the right end of the shaft shoulder, four groove slide rails are provided around the long axis, a sleeve on the long axis is connected to the front-stage spiral component, a slot hole 1 is provided in the middle of the front-stage spiral component, four convex grooves 1 are opened on the slot hole 1, and the convex groove 1 is meshed and connected to the groove slide rail, so that the front-stage spiral component is installed into the rod body along the groove slide rail, and the left end of the front-stage spiral component is fixedly connected to the shaft shoulder A raised step 1 is provided at the right end of the front-section spiral component, and the raised step 1 is top-fixedly connected to the middle-section spiral component. The number and thread style of the middle-section spiral component are set according to actual production needs. A recessed step 1 is provided at the left end of the middle-section spiral component, and the recessed step 1 is meshedly connected with the raised step 1. A slot hole 2 is provided in the middle of the middle-section spiral component, and four convex grooves 2 are provided on the slot hole 2. The convex grooves 2 are meshedly connected to the groove slide rail, so that the middle-section spiral component is installed into the rod body along the groove slide rail. A raised step 2 is provided at the right end of the middle-section spiral component, and the heads and tails of the several middle-section spiral components are top-fixedly connected.

[0007] According to the energy-saving and environmentally friendly twin-screw extruder described in the claim, it is characterized in that: the right top of the middle-section spiral component at the rightmost end is fixedly connected to the last-section spiral component, the left end of the last-section spiral component is provided with a recessed step two, the recessed step two is meshingly connected to the raised step two, a slot hole three is provided in the middle of the last-section spiral component, four convex grooves three are provided on the slot hole three, the convex groove three is meshingly connected with the groove slide rail, so that the last-section spiral component is installed into the rod body along the groove slide rail.

[0008] The utility model further illustrates that: a threaded hole is arranged at the right end of the long shaft, the threaded hole is bolted to connect the shaft end retaining ring, and the left end of the shaft end retaining ring is fixedly connected to the last section spiral member.

[0009] The utility model further illustrates that two semicircular grooves 1 are provided in the cavity, and two rod bodies are placed in the two semicircular grooves 1 respectively. The left end bearings of the two rod bodies are connected to the cavity, and the upper end of the cavity is embedded in a connecting cavity cover. Two semicircular grooves 2 are provided in the cavity cover, and the interior of the semicircular grooves 2 is meshed and connected with the rod bodies. A fixing seat is provided on the cavity cover, and the fixing seat is bolted to the frame. The fixing seat includes a base and a buckle, and the base is connected to the buckle bearing, and the base is connected to the buckle bolt.

[0010] The utility model further illustrates that the right end sleeve of the last section spiral member is connected to the sealed bearing sleeve, the right end sleeve of the sealed bearing sleeve is connected to the sealed bearing, the inner wall of the sealed bearing cooperates with the fixed shaft, the right end of the fixed shaft is welded to the discharge cavity, two slot holes four are arranged inside the discharge cavity, the sealed bearing sleeve is arranged in the slot hole four, and four screw holes are arranged at the left end of the discharge cavity, and the four screw holes are connected to the cavity bolts.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are: the utility model,

[0012] (1) By providing a rod body and spiral parts separated from each other, the purpose of facilitating the replacement of each section of the spiral assembly is achieved;

[0013] (2) By providing a separate cavity body and cavity cover, the purpose of convenient disassembly and cleaning is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] 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:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the rod assembly of the utility model;

[0017] Figure 3 It is a schematic diagram of each section of the spiral member of the utility model;

[0018] Figure 4 It is the assembly schematic diagram of the A part of the utility model;

[0019] Figure 5 It is a schematic diagram of the cavity of the utility model;

[0020] Figure 6 It is a schematic diagram of the cavity cover of the utility model;

[0021] Figure 7 It is a schematic diagram of a fixing seat of the utility model;

[0022] Figure 8 It is a schematic diagram of the cross-section assembly at B of the utility model;

[0023] In the figure: 1, rod body; 2, frame; 3, shoulder; 4, groove slide rail; 5, front section spiral member; 6, convex groove one; 7, raised step one; 8, slot hole one; 9, middle section spiral member; 10, recessed step one; 11, slot hole two; 12, convex groove two; 13, raised step two; 14, end section spiral member; 15, recessed step two; 16, slot hole three; 17, convex groove three; 18, shaft end retaining ring; 19, cavity; 20, semicircular groove one; 21, cavity cover; 22, fixed seat; 23, base; 24, retaining ring; 25, semicircular groove two; 26, sealed bearing sleeve; 27, sealed bearing; 28, fixed shaft; 29, discharge cavity; 30, slot hole four; 31, long axis; 32, screw hole; 33, threaded hole. DETAILED DESCRIPTION

[0024] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0025] 2. Please refer to Figure 1-8The utility model provides a technical solution: including a rod body 1, a front-section spiral component 5, a middle-section spiral component 9, a rear-section spiral component 14, a cavity 19, and is characterized in that: a shaft shoulder 3 is provided at the left end of the rod body 1, a long axis 31 is provided at the right end of the shaft shoulder 3, four groove slide rails 4 are provided around the long axis 31, a sleeve on the long axis 31 is connected to the front-section spiral component 5, a slot hole 8 is provided in the middle of the front-section spiral component 5, four convex grooves 6 are opened on the slot hole 8, and the convex groove 6 is engaged with the groove slide rail 4, so that the front-section spiral component 5 is installed into the rod body 1 along the groove slide rail 4.

[0026] The left end of the front spiral member 5 is top-fixedly connected to the shaft shoulder 3, and the right end of the front spiral member 5 is provided with a raised step 7, and the raised step 7 is top-fixedly connected to the middle spiral member 9. The left end of the middle spiral member 9 is provided with a recessed step 10, and the recessed step 10 is meshedly connected with the raised step 7. A slot hole 2 11 is provided in the middle of the middle spiral member 9, and four convex grooves 2 12 are provided on the slot hole 2 11. The convex groove 2 12 is meshedly connected with the groove slide rail 4, so that the middle spiral member 9 is installed into the rod body 1 along the groove slide rail 4. A raised step 2 13 is provided at the right end of the middle spiral member 9, and the heads and tails of several middle spiral members 9 are top-fixedly connected.

[0027] The right top of the rightmost middle spiral component 9 is fixedly connected to the last spiral component 14, and the left end of the last spiral component 14 is provided with a recessed step 2 15, which is meshed with the raised step 2 13, and the middle of the last spiral component 14 is provided with a slot hole 3 16, and the slot hole 3 16 is provided with four convex grooves 3 17, which are meshed with the groove slide rail 4, so that the last spiral component 14 is installed into the rod body 1 along the groove slide rail 4.

[0028] A threaded hole 33 is provided at the right end of the long shaft 31 , and the threaded hole 33 is bolted to the shaft end retaining ring 18 , and the left end of the shaft end retaining ring 18 is fixedly connected to the final spiral member 14 .

[0029] Two semicircular grooves 20 are arranged in the cavity 19, and two rod bodies 1 are placed in the two semicircular grooves 20 respectively. The left end bearings of the two rod bodies 1 are connected to the cavity 19, and the upper end of the cavity 19 is embedded in the connecting cavity cover 21. Two semicircular grooves 25 are arranged in the cavity cover 21. The interior of the semicircular grooves 25 is meshed and connected with the rod body 1. A fixing seat 22 is arranged on the cavity cover 21, and the fixing seat 22 is bolted to the frame 2. The fixing seat 22 includes a base 23 and a buckle 24. The base 23 is connected to the buckle 24 bearing, and the base 23 is bolted to the buckle 24.

[0030] The right end sleeve of the last spiral member 14 is connected to the sealed bearing sleeve 26, and the right end sleeve of the sealed bearing sleeve 26 is connected to the sealed bearing 27. The inner wall of the sealed bearing 27 cooperates with the fixed shaft 28. The right end of the fixed shaft 28 is welded with a discharge cavity 29. Two slot holes 430 are arranged inside the discharge cavity 29. The sealed bearing sleeve 26 is arranged in the slot holes 430. The left end of the discharge cavity 29 is provided with four screw holes 32. The four screw holes 32 are bolted to the cavity 19 to achieve a sealing effect. A through hole is opened at the right end of the cavity 19, and the molten plastic is extruded from the through hole.

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An energy-saving and environmentally friendly twin-screw extruder, comprising a rod body (1), a front-stage spiral component (5), a middle-stage spiral component (9), a rear-stage spiral component (14), and a cavity (19), characterized in that: a shaft shoulder (3) is provided at the left end of the rod body (1), a long axis (31) is provided at the right end of the shaft shoulder (3), four groove slide rails (4) are provided around the long axis (31), a sleeve on the long axis (31) is connected to the front-stage spiral component (5), a slot hole (8) is provided in the middle of the front-stage spiral component (5), four convex grooves (6) are provided on the slot hole (8), and the convex grooves (6) are meshed and connected to the groove slide rail (4), so that the front-stage spiral component (5) is installed into the rod body (1) along the groove slide rail (4); The left end of the front spiral member (5) is top-fixedly connected to the shaft shoulder (3); the right end of the front spiral member (5) is provided with a raised step (7), and the raised step (7) is top-fixedly connected to the middle spiral member (9); the left end of the middle spiral member (9) is provided with a recessed step (10), and the recessed step (10) is meshedly connected with the raised step (7); a slot hole (11) is provided in the middle of the middle spiral member (9), and four raised grooves (12) are provided on the slot hole (11), and the raised grooves (12) are meshedly connected with the groove slide rail (4), so that the middle spiral member (9) is installed into the rod body (1) along the groove slide rail (4); the right end of the middle spiral member (9) is provided with a raised step (13), and the heads and tails of the plurality of middle spiral members (9) are top-fixedly connected.

2. The energy-saving and environmentally friendly twin-screw extruder according to claim 1, characterized in that: The right side of the middle spiral component (9) at the rightmost end is fixedly connected to the last spiral component (14), and the left end of the last spiral component (14) is provided with a recessed step 2 (15), and the recessed step 2 (15) is meshedly connected to the raised step 2 (13). A slot hole 3 (16) is provided in the middle of the last spiral component (14), and four convex grooves 3 (17) are provided on the slot hole 3 (16). The convex grooves 3 (17) are meshedly connected with the groove slide rail (4), so that the last spiral component (14) is installed into the rod body (1) along the groove slide rail (4).

3. The energy-saving and environmentally friendly twin-screw extruder according to claim 2, characterized in that: A threaded hole (33) is provided at the right end of the long shaft (31), and the threaded hole (33) is bolted to the shaft end retaining ring (18), and the left end of the shaft end retaining ring (18) is fixedly connected to the final spiral member (14).

4. The energy-saving and environmentally friendly twin-screw extruder according to claim 3, characterized in that: Two semicircular grooves (20) are arranged in the cavity (19), two rod bodies (1) are placed in the two semicircular grooves (20), the left end bearings of the two rod bodies (1) are connected to the cavity (19), the upper end of the cavity (19) is embedded in the cavity cover (21), two semicircular grooves (25) are arranged in the cavity cover (21), and the interior of the semicircular grooves (25) is meshed and connected with the rod bodies (1); A fixing seat (22) is arranged on the cavity cover (21), the fixing seat (22) is bolted to the frame (2), the fixing seat (22) comprises a base (23) and a buckle ring (24), the base (23) and the buckle ring (24) are bearing-connected, and the base (23) and the buckle ring (24) are bolted.

5. The energy-saving and environmentally friendly twin-screw extruder according to claim 4, characterized in that: The right end sleeve of the last spiral element (14) is connected to a sealing bearing sleeve (26), and the right end sleeve of the sealing bearing sleeve (26) is connected to a sealing bearing (27); The inner wall of the sealing bearing (27) cooperates with the fixed shaft (28), and a discharge cavity (29) is welded to the right end of the fixed shaft (28). Two slot holes (4) (30) are arranged inside the discharge cavity (29), and the sealing bearing sleeve (26) is arranged in the slot hole (30). Four screw holes (32) are arranged at the left end of the discharge cavity (29), and the four screw holes (32) are bolted to the cavity body (19).

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