Adjustable modular screw conveyor for feed processing

Abstract

The application discloses a modularized screw conveyor for adjustable feed processing, and belongs to the technical field of agricultural and sideline product processing and conveying mechanical equipment, comprising a plurality of cylinder bodies, the plurality of cylinder bodies are expandable connected through supporting rings, and the cylinder bodies located at the sides are each provided with an end cover, one side of the end cover is connected with a rotary driving part, and at least two cylinder bodies are connected with pipelines. In the application, through the built-in limiting mechanism, a single limiting rod is pushed by the central telescopic driving part, the axial thrust is converted into radial movement through wedge surface cooperation, a plurality of clamping blocks are driven to be synchronously clamped into the clamping grooves of the screw conveying part, the quick assembly and disassembly and firm locking of the screw conveying part are realized, the first spring is matched to absorb the rotary torsion, and the wedge of the fixed block and the groove of the expanded shaft end is matched, so that the accuracy of torque transmission under long-distance expansion and the high stability of overall operation are ensured, and the strength requirement of continuous conveying of large quantities of agricultural and sideline products is met.

Description

Technical Field

[0001] This invention belongs to the technical field of agricultural and sideline product processing and conveying machinery and equipment, and particularly relates to an adjustable modular screw conveyor for feed processing. Background Technology

[0002] In modern agricultural and sideline product deep processing and feed production lines, screw conveyors, as a highly efficient continuous material handling equipment, are widely used for horizontal or inclined conveying of various powdery, granular, and small block feed raw materials and finished products, which are the core agricultural and sideline products.

[0003] However, existing screw conveyors for agricultural and sideline products, such as feed conveyors, still have the following technical shortcomings in practical applications: most existing screw conveyors are manufactured with fixed conveying dimensions according to specific needs. When the overall layout or production process of an agricultural and sideline product production plant changes, such as adding production line nodes or adjusting equipment spacing, the fixed-length conveyor often cannot adapt to the new process changes, requiring the replacement of the entire machine, resulting in high equipment procurement costs and resource waste, indicating room for improvement. Summary of the Invention

[0004] The purpose of this invention is to address the problem that fixed-length conveyors often cannot adapt to new process changes when the overall layout or production process of agricultural and sideline product production plants changes, such as adding production line nodes or adjusting equipment spacing. Therefore, this invention proposes an adjustable modular screw conveyor for feed processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable modular screw conveyor for feed processing includes multiple cylinders that are expandably connected to each other via support rings. Each cylinder located on one side is equipped with an end cap, one end cap of which is connected to a rotary drive unit. At least two cylinders are connected to pipes. The conveyor also includes:

[0007] A sealing mechanism is connected inside the support ring to seal the gap between the two cylindrical bodies.

[0008] The spiral conveyor section consists of multiple spiral conveyor sections arranged in an array within the cylinder, and these spiral conveyor sections extend and connect with the cylinder.

[0009] A limiting mechanism is connected to the cylinder body. Multiple spiral conveying parts are detachably installed outside the limiting mechanism. The limiting mechanism includes an extension shaft. One end of the extension shaft is rotatably connected to a bushing. The bushing is connected to the inner wall of the support ring through a support rod.

[0010] A guide mechanism is connected to the end of the limiting mechanism and buffers the dead zone of the shaft clearance.

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

[0012] The limiting mechanism further includes:

[0013] A limiting rod, one end of which is connected to a telescopic drive unit, which is installed inside the limiting rod.

[0014] Limiting blocks, multiple limiting blocks are connected to the outside of the limiting rod, and force-bearing blocks are attached to both sides of the limiting blocks. Guide rods are connected to both ends of one side of the force-bearing blocks, and the guide rods are slidably connected to the guide holes opened in the inner wall of the expansion shaft.

[0015] The snap-fit ​​block is connected to one end of the guide rod at the corresponding position. The snap-fit ​​block moves radially and snaps into the slot opened on the side of the shaft of the screw conveyor.

[0016] The first spring is sleeved on the outside of the guide rod, and its two ends are respectively connected to the outside of the expansion shaft and one side of the snap-fit ​​block.

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

[0018] The limiting mechanism further includes:

[0019] The support frame is rotatably connected to the outside of the limiting rod via bearings, and the support frame is connected to the inner cavity side wall of the extension shaft.

[0020] As a further description of the above technical solution:

[0021] The limiting mechanism further includes:

[0022] Two fixing blocks are connected to a groove at the end of the extension shaft, and the other end of the extension shaft has a stepped protrusion corresponding to the groove. Multiple extension shafts are extended by the wedging of the protrusion and the groove.

[0023] The guide rod is slidably connected between the groove at the end of the extension shaft and the inner cavity. One end of the guide rod abuts against the end of the limiting rod. The movement of the limiting rod on one side is transmitted to the limiting rod in the other extension shaft through the guide rod.

[0024] The second spring is sleeved on the outside of the guide rod, and its two ends are respectively connected to the inner cavity of the extension shaft and the outside of the guide rod.

[0025] As a further description of the above technical solution:

[0026] Both the fixing block and the groove have rectangular cross-sectional shapes, and the end of the protrusion has a rounded corner.

[0027] As a further description of the above technical solution:

[0028] The enclosure mechanism includes:

[0029] The two closed sleeves are respectively connected to the adjacent ends of the two sides of the cylinder at corresponding positions. The closed sleeve includes an outer support sleeve and a guide part is connected to the inner side of the support sleeve. The guide part has a conical cross-sectional shape.

[0030] As a further description of the above technical solution:

[0031] The enclosure mechanism also includes:

[0032] A rotating ring is rotatably connected to the outside of the closed sleeve, and multiple control blocks are connected to the circumference of the inner cavity of the rotating ring;

[0033] The slide rods are slidably connected to the holes opened on the outer periphery of the support sleeve. One end of the slide rod is connected to a pressure block, which contacts the inner side of the guide part. The other end of the slide rod is connected to a wedge block, which corresponds to the position of the control block. The rotation of the rotating ring causes the slide rod to drive the pressure block to press the guide part into contact with the side wall of the support ring.

[0034] The third spring is sleeved on the outside of the slide rod, and its two ends are connected to the pressure block and the inner side of the support sleeve, respectively.

[0035] As a further description of the above technical solution:

[0036] The enclosure mechanism also includes:

[0037] A sliding plate, with multiple sliding plates connected around the inside of a rotating ring, and a limit bolt rotatably connected to one side of the sliding plate;

[0038] The track grooves are connected around the outer periphery of the support sleeve. The track grooves have threaded grooves on the side opposite to the limit bolt. The limit bolts are used to move the rotating ring into the threaded grooves to limit the rotation.

[0039] As a further description of the above technical solution:

[0040] The guiding mechanism includes:

[0041] The guide sleeve has an arc-shaped guiding surface on the side opposite to the beginning of the material flow. The guide sleeve is fitted onto the outside of the expansion shaft at the corresponding position through openings on both sides.

[0042] As a further description of the above technical solution:

[0043] The guiding mechanism also includes:

[0044] The guide frame has an arc-shaped guide surface on one side corresponding to the beginning of the material flow, and an opening on the other side of the guide frame. The guide sleeve is fitted onto the outside of the support rod through the opening.

[0045] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0046] 1. In this invention, a built-in limiting mechanism is used to push a single limiting rod through a central telescopic drive unit. The axial thrust is converted into radial motion through wedge engagement, driving multiple locking blocks to simultaneously engage in the slots of the spiral conveyor unit. This achieves rapid loading and unloading and secure locking of the spiral conveyor component. Combined with the first spring absorbing rotational torque and the wedge engagement of the fixing block at the end of the extension shaft with the groove, the accuracy of torque transmission and the overall high stability of operation are ensured under long-distance extension, meeting the strength requirements for continuous conveying of large quantities of agricultural and sideline products.

[0047] 2. In this invention, when expanding multiple modules, the driving force on one side can be transmitted without loss to the limiting rod in the next expansion shaft through the transmission rod. Through the structure of step-by-step transmission and synchronous expansion, the conveyor can maintain the synchronous action of the internal locking mechanism when the module length is increased arbitrarily, which greatly improves the flexible production capability to adapt to the frequent adjustments of agricultural and sideline product production processes.

[0048] 3. In this invention, to address the problem of material accumulation in the spliced ​​cylinder, a closed mechanism is designed. By rotating the rotating ring, the internal control block squeezes the wedge block, which drives the slide rod and pressure block to press down. This forces the support sleeve guide with a conical inclined surface to fit tightly into the stepped gap between the cylinder and the support ring. The physical pressure seal fills the assembly gap, preventing the accumulation and mold growth of feed dust, which is used as an agricultural by-product, thus improving durability.

[0049] 4. In this invention, by adding a guiding mechanism with an arc-shaped guiding surface to the outside of the internal support rod and the extension shaft, the material facing the agricultural and sideline products can be streamlined and diverted when the agricultural and sideline products are pushed forward by the spiral shaft. This greatly reduces the retention and compression of the material at the root of the support and the gap of the shaft, eliminates the dead zone of the conveying, reduces the running resistance, ensures the smoothness of the conveying of agricultural and sideline products, and reduces the residual loss rate of high-value feed in the processing and circulation process. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the overall structure proposed in this invention;

[0051] Figure 2 This is a schematic diagram of the split structure proposed in this invention;

[0052] Figure 3 This is a schematic diagram of the assembly structure of the spiral conveyor unit proposed in this invention;

[0053] Figure 4 This is a schematic diagram of the side half-section structure of the limiting mechanism proposed in this invention;

[0054] Figure 5 The present invention proposes Figure 4 Enlarged structural diagram of section A;

[0055] Figure 6 This is a schematic diagram of the lateral structure of the spiral conveyor section proposed in this invention;

[0056] Figure 7 The present invention proposes Figure 6 Enlarged structural diagram of section B in the middle;

[0057] Figure 8 This is a schematic diagram of the assembly structure of the guiding mechanism proposed in this invention;

[0058] Figure 9 The present invention proposes Figure 8 Enlarged structural diagram of section C;

[0059] Figure 10 The present invention proposes Figure 8 Enlarged structural diagram of section D in the middle;

[0060] Figure 11 This is a schematic diagram of the closed mechanism structure proposed in this invention;

[0061] Figure 12 This is a schematic diagram of the lateral assembly structure of the closed mechanism proposed in this invention;

[0062] Figure 13 The present invention proposes Figure 12 An enlarged structural diagram of section E in the middle.

[0063] Legend:

[0064] 1. Cylinder body; 2. Rotary drive unit; 3. Support ring; 4. Support rod; 5. Screw conveyor unit; 6. Limiting mechanism; 601. Telescopic drive unit; 602. Limiting rod; 603. Limiting block; 604. Force-bearing block; 605. Guide rod; 606. First spring; 607. Snap-fit ​​block; 608. Support frame; 609. Expansion shaft; 610. Fixing block; 611. Conducting rod; 612. Second spring; 7. Closing mechanism; 701. Closing sleeve; 702. Rotating ring; 703. Pressing block; 704. Slide rod; 705. Third spring; 706. Wedge block; 707. Control block; 708. Slide plate; 709. Track groove; 710. Limiting bolt; 8. Guiding mechanism; 801. Guide sleeve; 802. Guide frame. Detailed Implementation

[0065] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0066] Please see Figures 1-13 The present invention provides a technical solution: an adjustable modular screw conveyor for feed processing: including multiple cylinders 1, which are expandably connected to each other by support rings 3, and each cylinder 1 located on the side is provided with an end cap, wherein one end cap is connected to a rotary drive unit 2, and at least two cylinders 1 are connected to pipes.

[0067] The rotary drive unit 2 can be a drive motor with a reduction gear to achieve controllable transmission.

[0068] Specifically: Feed can be fed in and out through the pipes of the two cylinders 1 located at the edge, so as to realize the expanded material conveying.

[0069] Also includes:

[0070] The closing mechanism 7 is connected inside the support ring 3 and closes the gap between the two cylinders 1.

[0071] A spiral conveyor 5, multiple spiral conveyor 5 arrayed inside the cylinder 1, and multiple spiral conveyor 5 extended and connected with the cylinder 1;

[0072] The limiting mechanism 6 is connected inside the cylinder 1. Multiple spiral conveying parts 5 are detachably installed outside the limiting mechanism 6. The limiting mechanism 6 includes an extension shaft 609. One end of the extension shaft 609 is rotatably connected to a bushing. The bushing is connected to the inner wall of the support ring 3 through a support rod 4.

[0073] Please see Figures 6-7 The guide mechanism 8 is connected to the end of the limiting mechanism 6, and the guide mechanism 8 buffers the dead zone of the shaft clearance;

[0074] Among them, multiple cylinders 1 and support rings 3 can be installed by bolts, clips or clamps to facilitate the expansion and adjustment of the conveying length;

[0075] The limiting mechanism 6 also includes:

[0076] A limiting rod 602, one end of which is connected to a telescopic drive unit 601, which is installed in the inner cavity of the limiting rod 602.

[0077] Limiting block 603, multiple limiting blocks 603 are connected to the outside of limiting rod 602, force-bearing block 604 is attached to both sides of the limiting block 603, and guide rod 605 is connected to both ends of one side of the force-bearing block 604. The guide rod 605 is slidably connected to the guide hole opened in the inner wall of the expansion shaft 609.

[0078] The snap-fit ​​block 607 is connected to one end of the guide rod 605 at the corresponding position. The snap-fit ​​block 607 moves radially and snaps into the slot opened on the side of the screw conveyor 5 shaft.

[0079] The first spring 606 is sleeved on the outside of the guide rod 605, and the two ends of the first spring 606 are respectively connected to the outside of the expansion shaft 609 and one side of the snap-fit ​​block 607;

[0080] Both the fixing block 610 and the groove have rectangular cross-sectional shapes, and the end of the protrusion has a rounded corner.

[0081] The extension shaft 609 located at the end can be connected to the bearing seat at the axial center of the end cover to achieve abutment support in the axial direction of the extension shaft 609 and prevent the movement of the limit rod 602 from causing the extension shafts 609 on both sides to detach.

[0082] Please see Figures 4-7 The limiting mechanism 6 also includes:

[0083] The support frame 608 is rotatably connected to the outside of the limiting rod 602 via a bearing, and the support frame 608 is connected to the inner cavity side wall of the extension shaft 609;

[0084] To address the problem that conveyors often rely solely on end flanges or simple bolt connections, which, when transporting agricultural products over long distances, lack reliable internal support and a locking mechanism, are prone to concentricity deviations in the extension shaft 609, leading to torque attenuation, operational wobbling, and a high risk of shaft breakage or jamming, resulting in generally poor conveying stability after extension, this embodiment specifically addresses this issue. Through a designed limiting mechanism 6, when the spiral conveyor section 5 needs to be extended, the spiral conveyor section 5 with hollow holes can be fitted onto the corresponding extension shaft 609, and after the spiral conveyor section 5 moves to the installation stroke... When the card holes on its surface are aligned with the carding block 607, the assembly spaces of the multiple nested spiral conveyor parts 5 correspond to the carding block 607. At this time, the extension of the movable end of the end telescopic drive part 601 can drive the limiting rod 602 to push the limiting block 603 to move. The movement of the limiting block 603 can drive the guide rod 605 to slide. The sliding of the guide rod 605 can drive the external carding block 607 to move and snap into the card hole pre-opened on one side of the spiral conveyor part 5 at the corresponding position. Thus, the spiral conveyor part 5 can be quickly expanded and assembled through the radially moving limiting block 603, improving the stability of the expansion assembly.

[0085] Furthermore, the multiple snap-fit ​​blocks 607 of the coaxial array can be designed with reasonable snap-fit ​​block 607 positions according to process requirements. The movement of a single limiting rod 602 drives multiple limiting blocks 603 to push multiple snap-fit ​​blocks 607 to unfold synchronously. Furthermore, the wedging of the inclined surfaces on both sides of the limiting block 603 with the inclined surfaces of the force-bearing block 604 improves the stability of transmission force application, maintains the overall expansion stability, and improves the conveying expansion effect over long distances.

[0086] Furthermore, the first spring 606, designed in this way, can absorb the torque of the rotating screw conveyor 5 by its own elasticity, thereby improving the conveying stability.

[0087] The telescopic drive unit 601 can be a corresponding telescopic motor;

[0088] Furthermore, after the expansion and nesting assembly is carried out through the fixing block 610 and the stepped protrusion at the end of the expansion shaft 609, the cylinder 1, the expansion shaft 609 and the screw conveyor 5 are expanded and assembled step by step. This helps to improve the expansion and assembly accuracy, ensures that the screw conveyor 5 and the expansion shaft 609 can stably follow the expansion of the cylinder 1 for modular assembly, and can reasonably expand the length of the cylinder 1 and the conveying length as needed, which is beneficial to improving the conveying needs brought about by the adjustment of the feed production process.

[0089] Please see Figures 8-10 The limiting mechanism 6 also includes:

[0090] Fixing block 610, two fixing blocks 610 are connected to the groove opened at the end of the extension shaft 609, and the other end of the extension shaft 609 has a stepped protrusion corresponding to the groove. Multiple extension shafts 609 are extended by the wedging of the protrusion and the groove.

[0091] The transmission rod 611 is slidably connected between the end groove of the extension shaft 609 and the inner cavity. One end of the transmission rod 611 abuts against the end of the limiting rod 602. The movement of the limiting rod 602 on one side is transmitted to the limiting rod 602 in the other extension shaft 609 through the transmission rod 611.

[0092] The second spring 612 is sleeved on the outside of the guide rod 611, and the two ends of the second spring 612 are respectively connected to the inner cavity of the extension shaft 609 and the outside of the guide rod 611;

[0093] Specifically: Through the designed transmission rod 611, the movement of the transmission rod 611 can transmit the movement of the single-sided limiting rod 602 to the limiting rod 602 in another extension shaft 609, realizing the transmission of thrust of the limiting rods 602 between multiple extension shafts 609 during long-distance extension, improving the stability of subsequent extension. The designed fixing block 610 can maintain the torque transmission of the extension shaft 609, improving the transmission stability.

[0094] Please see Figures 11-13 The closed mechanism 7 includes:

[0095] The two closed sleeves 701 are respectively connected to the adjacent ends of the two cylinders 1 at corresponding positions. The closed sleeve 701 includes an outer support sleeve and a guide part is connected to the inner side of the support sleeve. The cross-sectional shape of the guide part is conical.

[0096] A rotating ring 702 is rotatably connected to the outside of the closed sleeve 701, and multiple control blocks 707 are connected to the periphery of the inner cavity of the rotating ring 702.

[0097] A sliding rod 704, multiple sliding rods 704 are slidably connected in the holes opened on the outer periphery of the support sleeve. One end of the sliding rod 704 is connected to a pressure block 703, which contacts the inner side of the guide part. The other end of the sliding rod 704 is connected to a wedge block 706, which corresponds to the position of the control block 707. The rotation of the rotating ring 702 causes the sliding rod 704 to drive the pressure block 703 to press the guide part into contact with the side wall of the support ring 3.

[0098] The third spring 705 is sleeved on the outside of the slide rod 704, and the two ends of the third spring 705 are respectively connected to the pressure block 703 and the inner side of the support sleeve;

[0099] To address the issue of long-term accumulation and mold growth of feed residue in areas near the support bearing seat where materials are easily trapped in the stepped gap between adjacent cylinder 1 and connecting parts, the following measures are taken: The contact surface between the pressure block 703 and the tapered inclined surface of the support sleeve guide is inclined. By moving the pressure block 703, the guide inside the support sleeve can fully fit into the stepped gap between the side wall of the support ring 3 and the cylinder 1. This facilitates the sealing of the gap between the cylinder 1 and the support ring 3 during expansion through the design of the sealing sleeve 701, reducing feed accumulation in the stepped gap and improving overall durability.

[0100] The enclosed mechanism 7 also includes:

[0101] Slide 708, multiple slides 708 are connected to the inner side of rotating ring 702, and a limit bolt 710 is rotatably connected to one side of slide 708;

[0102] Track groove 709, multiple track grooves 709 are connected around the outer periphery of the support sleeve. The track groove 709 has a threaded groove on the side opposite to the limiting bolt 710. The limiting bolt 710 moves into the threaded groove to limit the rotating ring 702.

[0103] Specifically: The rotatable limiting ring can limit the position of the rotating ring 702 by turning the limiting bolt 710 into the threaded groove, which helps to maintain the full fit of the pressure block 703 with the sealing sleeve 701 and improve the sealing effect.

[0104] The guiding organizations 8 include:

[0105] The guide sleeve 801 has an arc-shaped guiding surface on the side opposite to the material flow start end. The guide sleeve 801 is sleeved on the outside of the expansion shaft 609 at the corresponding position through openings on both sides.

[0106] The guide frame 802 has an arc-shaped guide surface on one side corresponding to the beginning of the material flow, and an opening on the other side of the guide frame 802. The guide sleeve 801 is sleeved on the outside of the support rod 4 through the opening.

[0107] Specifically: Through the designed guiding mechanism 8, the guiding sleeve 801 can reduce the accumulation of material at the root of the support rod 4 by guiding the material in a conical shape on the front side during the material screw conveying, thereby improving the overall conveying stability and reducing the conveying dead zone. In addition, the guiding frame 802 can be set outside the support rods 4 on both sides, and the material residue on the surface of the support rod 4 can be reduced by guiding the material through the guiding sleeve 801.

[0108] Working principle: When the feed production process changes and the conveying distance needs to be extended, the new cylinder 1 is externally fixed to the original cylinder 1 by bolts, buckles or clamps through the support ring 3. Then the internal components are expanded. The spiral conveying part 5 with hollow holes is sleeved on the outside of the corresponding extension shaft 609. The stepped protrusion at the end of the extension shaft 609 is inserted into the groove at the end of the previous extension shaft 609. At this time, the two fixing blocks 610 are engaged to ensure stable torque transmission.

[0109] The telescopic drive unit 601 inside the limit rod 602 is activated, and its movable end extends to push the limit rod 602 to move axially. The limit rod 602 drives multiple external limit blocks 603 to move synchronously. The inclined surface of the limit block 603 presses against the inclined surface of the force block 604, forcing the force block 604 to drive the guide rod 605 to overcome the elastic force of the first spring 606 and slide radially outward in the guide hole. The locking block 607 at the top of the guide rod 605 then extends radially and precisely locks into the preset slot of the external spiral conveyor 5, completing the rigid locking of the current section of the spiral conveyor 5.

[0110] At the end of the axial movement of the limiting rod 602, it will abut and push the transmission rod 611 in the next extension shaft 609. The transmission rod 611 overcomes the elastic force of the second spring 612 and continues to transmit the thrust to the limiting rod 602 of the next section, thereby realizing the synchronous radial locking of the multi-section extension components.

[0111] The process of sealing the gaps and preventing material accumulation in cylinder 1 is carried out after the cylinder 1 is assembled, in order to eliminate the gaps:

[0112] The rotating ring 702 outside the support ring 3 is rotated manually or by an external mechanism. The control block 707 inside the rotating ring 702 undergoes circumferential displacement, and the inclined surface of the control block 707 presses against the wedge block 706 on the outside of the support sleeve.

[0113] When the wedge 706 is compressed, it causes the slide bar 704 to slide inward against the elastic force of the third spring 705, and the pressure block 703 at the bottom of the slide bar 704 moves inward accordingly. The inclined surface of the pressure block 703 strongly presses the guide part inside the support sleeve, causing its conical cross-section to deform and tightly fit and seal the stepped gap where the cylinder 1 and the support ring 3 meet;

[0114] Finally, tighten the limiting bolt 710 on the side of the slide plate 708 so that it engages in the threaded groove in the track groove 709, locking the rotating ring 702 and completing a permanent seal to prevent feed from entering the gap.

[0115] During the material conveying and dead zone clearing process, after the equipment is started, the rotating drive unit 2 at the side end cover drives the overall expansion shaft 609 and the screw conveyor 5 to rotate, and the feed enters the cylinder 1 from the feed pipe.

[0116] During the rotational conveying of materials by the screw conveyor 5, the slight elastic deformation of the first spring 606 can absorb the irregular torsional impact generated during startup and operation, thus protecting the transmission structure.

[0117] When the material flows through the support frame 608 and support rod 4, it comes into contact with the guide sleeve 801 and guide frame 802. The arc-shaped guide surface at its front end smoothly diverts the material to both sides and the periphery, avoiding direct impact or accumulation of the material in the right-angle area at the base of the support rod 4, thus achieving a smooth transition and dead-zone-free conveying until the material is discharged from the discharge pipe on the other side.

[0118] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0119] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adjustable modular screw conveyor for feed processing, comprising multiple cylinders (1), which are expandably connected to each other via support rings (3), and each cylinder (1) located on one side is provided with an end cap, wherein one end cap is connected to a rotary drive unit (2), and at least two cylinders (1) are connected to a pipe, characterized in that, Also includes: The closing mechanism (7) is connected inside the support ring (3) and closes the gap between the two cylinders (1) through the closing mechanism (7); A spiral conveyor (5) is arranged in an array inside the cylinder (1), and the spiral conveyor (5) extends and connects with the cylinder (1); The limiting mechanism (6) is connected inside the cylinder (1). Multiple spiral conveying parts (5) are detachably installed outside the limiting mechanism (6). The limiting mechanism (6) includes an extension shaft (609). One end of the extension shaft (609) is rotatably connected to a bushing. The bushing is connected to the inner wall of the support ring (3) through a support rod (4). The guide mechanism (8) is connected to the end of the limiting mechanism (6) and buffers the dead zone of the shaft gap through the guide mechanism (8).

2. The adjustable modular screw conveyor for feed processing according to claim 1, characterized in that, The limiting mechanism (6) further includes: A limiting rod (602) is provided, with a telescopic drive unit (601) connected to one end of the limiting rod (602), and the telescopic drive unit (601) is installed in the inner cavity of the limiting rod (602). Limiting blocks (603), multiple limiting blocks (603) are connected to the outside of the limiting rod (602), and force-bearing blocks (604) are attached to both sides of the limiting blocks (603). Guide rods (605) are connected to both ends of one side of the force-bearing blocks (604), and the guide rods (605) are slidably connected to the guide holes opened in the inner wall of the expansion shaft (609); The snap-fit ​​block (607) is connected to one end of the guide rod (605) at the corresponding position. The snap-fit ​​block (607) moves radially and snaps into the slot opened on the shaft side of the screw conveyor (5). The first spring (606) is sleeved on the outside of the guide rod (605), and the two ends of the first spring (606) are respectively connected to the outside of the extension shaft (609) and one side of the snap-fit ​​block (607).

3. The adjustable modular screw conveyor for feed processing according to claim 2, characterized in that, The limiting mechanism (6) further includes: The support frame (608) is rotatably connected to the outside of the limiting rod (602) via a bearing, and the support frame (608) is connected to the inner wall of the expansion shaft (609).

4. The adjustable modular screw conveyor for feed processing according to claim 1, characterized in that, The limiting mechanism (6) further includes: Fixing blocks (610), two fixing blocks (610) are connected to the grooves opened at the ends of the extension shafts (609), and the other end of the extension shafts (609) has stepped protrusions corresponding to the grooves. Multiple extension shafts (609) are extended by the wedging of the protrusions and the grooves. The guide rod (611) is slidably connected between the end groove of the extension shaft (609) and the inner cavity. One end of the guide rod (611) abuts against the end of the limiting rod (602). The movement of the single-sided limiting rod (602) is transmitted to the limiting rod (602) in the other extension shaft (609) through the guide rod (611). The second spring (612) is sleeved on the outside of the guide rod (611), and the two ends of the second spring (612) are connected to the inner cavity of the extension shaft (609) and the outside of the guide rod (611), respectively.

5. The adjustable modular screw conveyor for feed processing according to claim 4, characterized in that, The cross-sectional shape of the fixing block (610) and the groove is rectangular, and the end of the protrusion has a rounded corner.

6. The adjustable modular screw conveyor for feed processing according to claim 1, characterized in that, The closing mechanism (7) includes: The two closed sleeves (701) are respectively connected to the adjacent ends of the two side cylinders (1) at corresponding positions. The closed sleeve (701) includes an outer support sleeve and a guide part is connected to the inner side of the support sleeve. The cross-sectional shape of the guide part is conical.

7. The adjustable modular screw conveyor for feed processing according to claim 6, characterized in that, The closing mechanism (7) also includes: A rotating ring (702) is rotatably connected to the outside of the closed sleeve (701), and multiple control blocks (707) are connected to the periphery of the inner cavity of the rotating ring (702). A sliding rod (704) is slidably connected to a hole opened on the outer periphery of the support sleeve. One end of the sliding rod (704) is connected to a pressure block (703), which contacts the inner side of the guide part. The other end of the sliding rod (704) is connected to a wedge (706), which corresponds to the position of the control block (707). The sliding rod (704) drives the pressure block (703) to press the guide part into contact with the side wall of the support ring (3) by the rotation of the rotating ring (702). The third spring (705) is sleeved on the outside of the slide rod (704), and the two ends of the third spring (705) are connected to the pressure block (703) and the inner side of the support sleeve, respectively.

8. The adjustable modular screw conveyor for feed processing according to claim 7, characterized in that, The closing mechanism (7) also includes: A sliding plate (708) is surrounded and connected to the inside of a rotating ring (702), and a limit bolt (710) is rotatably connected to one side of the sliding plate (708). Track groove (709), multiple track grooves (709) are connected around the outer periphery of the support sleeve. The track groove (709) has a threaded groove on the side opposite to the limit bolt (710). The threaded groove is moved into the limit rotating ring (702) through the limit bolt (710).

9. The adjustable modular screw conveyor for feed processing according to claim 1, characterized in that, The guiding mechanism (8) includes: The guide sleeve (801) has an arc-shaped guide surface on the side opposite to the beginning of the material flow. The guide sleeve (801) is sleeved on the outside of the expansion shaft (609) at the corresponding position through openings on both sides.

10. The adjustable modular screw conveyor for feed processing according to claim 9, characterized in that, The guiding mechanism (8) also includes: The guide frame (802) has an arc-shaped guide surface on one side corresponding to the beginning of the material flow, and an opening on the other side of the guide frame (802). The guide sleeve (801) is sleeved on the outside of the support rod (4) through the opening.

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