A screw feeder for dry and wet materials of grain by-products

Abstract

This disclosure provides a screw feeder for dry and wet grain by-products, including a support frame, a hopper, end caps, a screw conveyor structure, and a cleaning mechanism. The hopper consists of a hinged first half and a second half, each with an inlet and an outlet. The screw conveyor structure is coaxially mounted inside the hopper, with both ends rotatably connected to the support frame via end caps. The cleaning mechanism includes a cleaning water pipe with spray nozzles, one end of which is fixed to the end caps. The screw conveyor structure can move axially along a first position and a second position, switching between a rotating conveying position and a cleaning position. During cleaning, the screw conveyor structure drives the end caps to rotate, and the spray nozzles rinse the inner wall of the hopper, achieving efficient cleaning. This embodiment offers high cleaning efficiency and allows cleaning of the screw feeder without disassembling the rotating shaft.

Description

Technical Field

[0001] This disclosure relates to the field of cleaning screw feeder equipment. More specifically, it relates to a screw feeder for dry and wet grain by-products. Background Technology

[0002] Currently, grain processing byproducts such as wheat bran, germ, rice bran, corn husk, miscellaneous grain bran, and brewer's grain residue are rich in macromolecular fiber components such as cellulose, hemicellulose, and lignin, resulting in a rough texture and poor digestibility. Enzymatic hydrolysis technology can enable the high-value utilization of these byproducts. Existing technologies utilize screw extruders to achieve continuous raw material supply and enzymatic hydrolysis, improving efficiency. However, the residue of viscous, muddy materials during hydrolysis easily leads to scaling on the screw and the inner wall of the feed hopper, requiring frequent shutdowns for cleaning. Traditional cleaning methods rely on manual disassembly of the screw blades, but this process is prone to blade breakage or deformation of the threaded interface due to gravity imbalance. Furthermore, in actual use, the viscous materials make cleaning extremely difficult, requiring workers to spend a significant amount of time cleaning residual materials inside the feed hopper, resulting in low cleaning efficiency. Utility Model Content

[0003] The purpose of this disclosure is to provide a screw feeder for efficiently cleaning dry and wet grain by-products in the hopper without disassembling the screw feeder, thereby solving at least one of the problems existing in the prior art.

[0004] To achieve the above objectives, the present disclosure adopts the following technical solution:

[0005] This disclosure discloses a screw feeder for dry and wet grain by-products, comprising:

[0006] A material bucket fixed to a bracket;

[0007] A first end cap and a second end cap are respectively installed at both ends of the material barrel and rotatably connected to the inner wall of the material barrel;

[0008] A spiral conveyor structure is coaxially arranged inside the material barrel. One end of the spiral conveyor structure passes through the first end cover and is rotatably connected to the bracket, and the other end passes through the second end cover and is rotatably connected to the bracket.

[0009] The spiral conveyor structure includes

[0010] In the first position, the spiral conveyor structure is rotatably connected to the first end cover and the second end cover;

[0011] In the second position, the spiral conveying structure is engaged with the first end cover and the second end cover, and under the drive of the drive motor, the spiral conveying structure drives the first end cover and the second end cover to rotate together in the material bucket.

[0012] The feeding device also includes a cleaning water pipe that can be installed inside the material hopper. One end of the cleaning water pipe is sealed and the other end is open. The open end of the cleaning water pipe is exposed from the first end cover. The sealed end of the cleaning water pipe is threadedly engaged with the second end cover. The body of the cleaning water pipe includes a water spray nozzle.

[0013] Optionally, the spiral conveying structure includes a rotating shaft and spiral blades disposed in the middle of the rotating shaft;

[0014] The spiral conveying structure further includes a first clamping block, a second clamping block, a first bearing, and a second bearing;

[0015] The first locking block is fixed on the rotating shaft and positioned on the side of the first end cover away from the second end cover;

[0016] The second locking block is fixed on the rotating shaft and is located on the side of the second end cover near the first end cover;

[0017] The first bearing is fixed on the rotating shaft and is located on the side of the first end cover near the second end cover;

[0018] The second bearing is fixed on the rotating shaft and is located on the side of the second end cover away from the first end cover.

[0019] Optionally, the first end cap is provided with:

[0020] The first card slot that mates with the first card block;

[0021] The second slot mates with the first bearing;

[0022] For use as mounting holes exposed at the open end of the cleaning water pipe;

[0023] In the second position, the first card block is embedded in the first card slot, and the first end cover is engaged with the rotating shaft.

[0024] In the first position, the first bearing is embedded in the second slot, and the first end cover is rotatably connected to the rotating shaft.

[0025] Optionally, the second end cap is provided with:

[0026] A third slot that mates with the second card block;

[0027] The fourth slot that mates with the second bearing;

[0028] A threaded hole that mates with the threaded end of the cleaning water pipe;

[0029] In the second position, the second card block is embedded in the third card slot, and the second end cover is engaged with the rotating shaft;

[0030] In the first position, the second bearing is embedded in the fourth slot, and the second end cover is rotatably connected to the shaft.

[0031] Optionally, the support is provided with a displacement mechanism; the displacement mechanism is equipped with a drive motor for driving the rotation of the screw conveyor structure, and the displacement mechanism is configured to move on the support along the axial direction of the screw conveyor structure, so as to drive the screw conveyor structure to move from a first position to a second position along the axial direction of the screw conveyor structure.

[0032] Optionally, the displacement mechanism includes a slide rail mounted on a bracket, a slider cooperating with the slide rail, and a linear actuator for driving the slider to slide.

[0033] The drive motor is fixedly mounted on the slider;

[0034] The slide rail is provided with a guide groove, and the slider is embedded in the guide groove;

[0035] The output of the linear driver is connected to a slider.

[0036] Optionally, the section of the outer shaft of the first end cover includes a water channel, which is connected to the opening end of the cleaning water pipe via a connecting pipe. The water channel includes a water inlet exposed outside the shaft; the water inlet is connected to a rotary joint.

[0037] Optionally, a third bearing is provided on the bracket;

[0038] The two ends of the spiral conveyor structure are rotatably connected to the support via a third bearing.

[0039] Optionally, the fastener includes a fixing block that protrudes outward from opposite edges on the hinge side of the first half and the second half, respectively. The fixing block is provided with a through hole, and bolts are inserted into the through holes of the fixing block of the first half and the corresponding fixing blocks of the second half to fix the first half and the second half.

[0040] The beneficial effects of this disclosure are as follows:

[0041] This disclosure integrates screw material conveying and high-pressure water cleaning functions. A displacement mechanism drives the screw conveyor structure to slide in first and second positions, enabling cleaning of the screw feeder without disassembling its shaft. This allows for rapid switching between the screw feeding function and the internal cleaning function. The synchronous rotation of the first and second end covers drives the cleaning water pipe to rotate around the screw conveyor structure, with multiple spray nozzles forming a cleaning net to efficiently clean residual material in the material bin. Attached Figure Description

[0042] The specific embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0043] Figure 1 This diagram shows a three-dimensional structural schematic of the screw feeder when the hopper is closed in the first embodiment of this disclosure.

[0044] Figure 2 This diagram shows a three-dimensional structural schematic of a screw feeder with the feed hopper in cleaning mode according to the first embodiment of this disclosure.

[0045] Figure 3 This diagram shows a three-dimensional structural schematic of a screw feeder with the hopper in conveying mode according to a second embodiment of the present disclosure.

[0046] Figure 4 Show Figure 3 A magnified view of a portion at point A.

[0047] Figure 5 This diagram shows a three-dimensional structural schematic of a screw feeder with the feed hopper in cleaning mode according to a second embodiment of the present disclosure.

[0048] Figure 6 Show Figure 5 Enlarged view of section B.

[0049] Figure 7 A three-dimensional structural schematic diagram of the spiral conveyor structure of this disclosure is shown.

[0050] Figure 8 Show Figure 7 A magnified view of point C.

[0051] Figure 9 Show Figure 7 Enlarged view of part D.

[0052] Figure 10 A schematic diagram of the cleaning water pipe of this disclosure is shown.

[0053] Figure 11 The left view of the first end cap is shown.

[0054] Figure 12 The right view of the first end cap is shown.

[0055] Figure 13 The left view of the second end cap is shown.

[0056] Figure 14 The right view of the second end cap is shown.

[0057] Figure 15 A three-dimensional structural schematic diagram of the displacement mechanism is shown. Detailed Implementation

[0058] To more clearly illustrate this disclosure, the following description, in conjunction with embodiments and accompanying drawings, provides further insight. Similar components in the drawings are indicated by the same reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this disclosure.

[0059] One embodiment of this disclosure provides a screw feeder for dry and wet grain by-products, characterized in that it includes:

[0060] A material bucket fixed to a bracket;

[0061] A first end cap and a second end cap are respectively installed at both ends of the material barrel and rotatably connected to the inner wall of the material barrel;

[0062] A spiral conveyor structure is coaxially arranged inside the material barrel. One end of the spiral conveyor structure passes through the first end cover and is rotatably connected to the bracket, and the other end passes through the second end cover and is rotatably connected to the bracket.

[0063] The spiral conveyor structure includes:

[0064] In the first position, the spiral conveyor structure is rotatably connected to the first end cover and the second end cover;

[0065] In the second position, the spiral conveying structure is engaged with the first end cover and the second end cover, and under the drive of the drive motor, the spiral conveying structure drives the first end cover and the second end cover to rotate together in the material bucket.

[0066] The feeding device also includes a cleaning water pipe that can be installed inside the material hopper. One end of the cleaning water pipe is sealed and the other end is open. The open end of the cleaning water pipe is exposed from the first end cover. The sealed end of the cleaning water pipe is threadedly engaged with the second end cover. The body of the cleaning water pipe includes a water spray nozzle.

[0067] This embodiment integrates screw material conveying and high-pressure water cleaning functions. A displacement mechanism drives the screw conveyor structure to slide in first and second positions, enabling cleaning of the screw feeder without disassembling its shaft. This allows for rapid switching between the screw feeding function and the internal cleaning function. The synchronous rotation of the first and second end caps drives the cleaning water pipe to rotate around the screw conveyor structure, with multiple spray nozzles forming a cleaning net to efficiently clean residual material in the material bin.

[0068] In a specific example, such as Figure 1 , Figure 2 ,as well as Figure 10 As shown, a screw feeder for dry and wet grain by-products includes:

[0069] The bracket 10 serves as the core support, used to fix the material bucket 30 and to support the screw conveyor structure 20.

[0070] The material bucket 30 is rotatably connected to a first end cap 40 and a second end cap 50 at both ends. The two ends of the material bucket 30 are sealed by the first end cap 40 and the second end cap 50. The first end cap 40 and the second end cap 50 are rotatably connected to the material bucket 30 by roller bearings and adopt a rotary sealing design such as a lip seal ring (not shown in the figure) to prevent material leakage.

[0071] The screw conveyor structure 20 is coaxially arranged inside the material hopper 30, with one end passing through the first end cover 40 and rotatably connected to the support 10, and the other end passing through the second end cover 50 and rotatably connected to the support 10. The main body is a rotating shaft with helical blades 202, which passes through the material hopper 30. Under the drive of the displacement mechanism 70, there are a first position and a second position; specifically:

[0072] The first position is mainly used for material conveying mode: the screw conveyor structure 20 is rotatably connected to the support 10, the first end cover 40 and the second end cover 50 at both ends of the material bucket 30 do not rotate with the shaft, and the screw conveyor structure 20 pushes and conveys the material.

[0073] The second position is mainly used for the cleaning mode inside the screw feeder: the displacement mechanism 70 drives the drive motor to move the entire screw conveyor structure laterally, so that the screw conveyor structure 20 engages with the first end cover 40 and the second end cover 50 respectively. At this time, the rotating shaft 201 rotates synchronously, driving the two end covers to rotate synchronously.

[0074] The drive motor 60 is mounted on the displacement mechanism 70. In this example, the drive motor 60 is a variable frequency motor that drives the rotating shaft 201 via a coupling. The base of the drive motor 60 is connected to the displacement mechanism 70 to achieve axial sliding.

[0075] A cleaning water pipe 80, sealed at one end and open at the other, has its sealed end inserted into the material tank 30 through the first end cover 40 and threadedly connected to the second end cover 40. When the first end cover 40 and the second end cover 50 are driven to rotate synchronously by the screw conveyor structure 20, the cleaning water pipe 80 remains stationary relative to the first end cover 40 and the second end cover 50. Preferably, there are three cleaning water pipes 80, evenly arranged around the screw conveyor structure 20.

[0076] In this embodiment, the cleaning water pipe 80 is made of galvanized steel pipe, which is corrosion resistant and can ensure long-term operation under high pressure.

[0077] like Figure 10 As shown, the cleaning water pipe 80 is equipped with multiple spray nozzles; the spray nozzles are fan-shaped, with an angle that covers the entire length of the material bucket 30, ensuring no cleaning dead corners. The open end of the cleaning water pipe 80 is connected to a high-pressure water pump, and the pressure can be adjusted from 5 to 10 MPa by controlling the output of the high-pressure water pump to adapt to different cleaning needs.

[0078] In one specific implementation, such as Figure 2As shown, the sealed end of the cleaning water pipe 80 passes through the mounting hole 403 and is threadedly fixed to the second end cap 50. The open end is threadedly connected to the mounting hole 403. The cleaning water pipe 80 is threadedly fixed to the second end cap 50, and both end caps have a certain limiting effect on the cleaning water pipe 80, so that the cleaning water pipe 80 can be stably installed in the material tank 30, avoiding deformation of the cleaning water pipe 80 due to high-pressure flushing.

[0079] In one possible implementation, such as Figure 2 As shown, the material bucket 30 includes two interlocking halves. The first half 302 is fixedly mounted on a bracket. One side edge of the second half 301 is hinged to one side edge of the first half 302, and the other side edge of the second half 301 is connected to the other side edge of the first half 302 by fasteners. After the first half 302 and the second half 301 are interlocked, they form a conveying channel for accommodating the screw conveyor structure 20. The first half 302 is provided with a discharge port 304, and the second half 301 is provided with a feed port 303. In this embodiment, since the material is sticky and difficult to clean in actual use, the cleaning efficiency is low because workers need to spend a lot of time cleaning the residual material on the bucket. The half-body structure of the bucket facilitates the installation of the cleaning water pipe 80 and the maintenance of the equipment. On the other hand, considering that some of the washed-off material cannot be discharged after rinsing, opening the second half 301 facilitates manual removal of the washed-off material. Furthermore, in this embodiment, if the user pours water into the feed inlet to remove residual material washed down from the feed outlet, this method is not only incomplete but also wastes water. By opening the second half 301, the user can quickly clean the inner wall of the material tank 30 and the screw conveyor structure 20.

[0080] In one specific implementation, such as Figure 2 As shown, the fastener includes fixing blocks 305 that protrude outward from opposite edges on the hinge side of the first half-body 302 and the second half-body 301, respectively. Each fixing block 305 has a through hole. Bolts are inserted into the through holes of the fixing blocks of the first half-body 302 and the corresponding through holes of the fixing blocks 305 of the second half-body 301 to fix the first half-body 302 and the second half-body 301. The second half-body 301 and the first half-body 302 are detachably fixed together by bolts. The bolt fixing method is simple and reliable.

[0081] The working principle of this embodiment is as follows:

[0082] Conveying mode:

[0083] The spiral conveyor structure 20 is in the first position.

[0084] Reference Figure 1During this stage, the cleaning water pipe 80 and the water supply pipe 210 connected to the cleaning water pipe 80 have been removed. It should be noted that in this embodiment, the water supply pipe 210 is connected to an external high-pressure water pump to supply water to the cleaning water pipe 80. The holes on the first end cap 40 can be sealed with a sealing plug (not shown in the figure), which is made of rubber.

[0085] The drive motor 60 drives the screw conveyor structure 20 to rotate. The first end cover 40 and the second end cover 50 are free and stationary without any force. The screw conveyor structure 20 conveys the material from the feed port 303 to the discharge port 304 and discharges it from the discharge port 304.

[0086] Switch to cleaning mode:

[0087] Stop feeding and empty the remaining material.

[0088] The displacement mechanism 70 pushes the motor and the rotating shaft 201 to move axially to the second position. The rotating shaft 201 is engaged with the first end cover 40 and the second end cover 50.

[0089] Unscrew the bolts, open the second half 301, insert the sealed end of the cleaning water pipe 80 through the first end cover 40 into the material tank 30 and connect it with the threaded connection of the second end cover 50; close the second half 301 and fix it with bolts.

[0090] The drive motor 60 is started and rotates back and forth within a preset rotation angle range. For example, three cleaning water pipes 80 are evenly distributed around the spiral conveyor structure 20 within the material tank 30. The preset rotation angle range is 0°-120°, meaning the drive motor 60 rotates clockwise from 0° to 120° and then back to 0°. To avoid cleaning dead zones due to control errors of the drive motor 60, the preset rotation angle range can be set to 0°-130° in this embodiment. The high-pressure water pump is turned on, and the rotating end cap causes the cleaning water pipes 80 to oscillate around the spiral conveyor structure 20. The water flow from the nozzles forms a dynamic rinsing net, removing adhering materials from the inner wall of the material tank 30 and the spiral conveyor structure 20. The rinsed-off adhering materials are discharged from the outlet. If the rinsed-off adhering materials are not discharged from the outlet, the high-pressure water pump is turned off. After the residual water is drained, the second half 301 is opened, and the remaining materials are manually discharged. Remove the cleaning water pipe 80, the displacement mechanism 70 returns to the first position, the locking and disengaging mechanism separates, and the device returns to the material conveying preparation state, waiting to convey materials.

[0091] In a specific example, such as Figure 1 and Figure 2As shown, the second half 301 and the first half 302 protrude outward on opposite sides of the hinge side to form a fixing block 305. The fixing block 305 is provided with a through hole. Bolts are inserted into the through holes of the fixing block 305 of the second half 301 and the corresponding fixing block 305 of the first half 302 to fix the second half 301 and the first half 302.

[0092] In one possible implementation, the spiral conveying structure includes a rotating shaft and spiral blades disposed in the middle of the rotating shaft; one end of the rotating shaft passes through the axis of the first end cover and is rotatably connected to a second bracket, and the other end passes through the axis of the second end cover and is rotatably connected to a third bracket. The spiral conveying structure also includes a first locking block, a second locking block, a first bearing, and a second bearing; the first locking block is fixed on the rotating shaft and disposed on the side of the first end cover away from the second end cover; the second locking block is fixed on the rotating shaft and disposed on the side of the second end cover near the first end cover; the first bearing is fixed on the rotating shaft and disposed on the side of the first end cover near the second end cover; the second bearing is fixed on the rotating shaft and disposed on the side of the second end cover away from the first end cover. In this embodiment, the first and second locking blocks are positioned away from the drive motor, while the first and second bearings are positioned close to the motor. Since the shaft experiences a large load during material conveying, but a smaller load during cleaning of the screw feeder's interior, the first and second bearings are positioned close to the drive motor to ensure efficient power transmission and reduce shaft deformation. When switching to cleaning mode, the first and second locking blocks, away from the motor, engage with the first and second end covers, causing the shaft to rotate under low load. This embodiment optimizes bearing operating conditions and extends the shaft's service life.

[0093] In a specific example, such as Figure 7 As shown, the spiral conveyor structure 20 includes:

[0094] A rotating shaft 201, one end of which passes through the first end cover 40 and is rotatably connected to the bracket 10, and the other end of which passes through the second end cover 50 and is rotatably connected to the bracket 10;

[0095] like Figure 8 and Figure 9 As shown, the screw conveyor structure 20 also includes:

[0096] Rotating shaft 201 and spiral blade 202 disposed on rotating shaft 201;

[0097] A first locking block 203 is fixed on the rotating shaft 201 and is located on the side of the first end cover 40 away from the second end cover 50;

[0098] A second locking block 205 is fixed on the rotating shaft 201 and is disposed on the side of the second end cover 50 near the first end cover 40;

[0099] A first bearing 204 is fixed on the rotating shaft 201 and disposed on the side of the first end cover 40 near the second end cover 50;

[0100] A second bearing 206 is fixed on the rotating shaft 201 and disposed on the side of the second end cover 50 away from the first end cover 40.

[0101] In one possible implementation, the first end cap is provided with a first slot that mates with a first locking block; a second slot that mates with a first bearing; and a mounting hole for exposing the opening end of the cleaning water pipe. In a second position, the first locking block is embedded in the first slot, and the first end cap is engaged with the rotating shaft. In a first position, the first bearing is embedded in the second slot, and the first end cap is rotatably connected to the rotating shaft. In this embodiment, the first bearing is embedded in the second slot to form a rotating pair, the end cap is stationary while the rotating shaft rotates independently, ensuring that the bearing accurately bears the torque when pushing materials; the first locking block is embedded in the first slot to form a rigid linkage, the rotating shaft drives the end cap to rotate synchronously, and dynamic rinsing is achieved in conjunction with the high-pressure cleaning water pipe fixed by the threaded hole; space optimization: the dual slots are integrated into a single end cap, compressing the axial dimension and extending the bearing life.

[0102] like Figure 11 and Figure 12 As shown, the first end cap 40 is provided with: a first slot 401 that cooperates with the first locking block 203; a second slot 402 that cooperates with the first bearing 204; and a mounting hole 403 for the cleaning water pipe 80 to pass through the material bucket 30; the first locking block 203 is configured in a second position, and the first locking block 203 is embedded in the first slot 401 to make the first end cap 40 engage with the rotating shaft 201; the first bearing 204 is configured in a first position, and the first bearing 204 is embedded in the second slot 402 to make the first end cap 40 rotatably connected to the rotating shaft 201.

[0103] In a specific example, such as Figure 8 As shown, the first bearing 204 is provided with a fourth locking block to prevent the first bearing 204 from rotating relative to the first end cover 40; the first bearing 204 is configured in a first position, and the first bearing 204 and the fourth locking block are engaged in the second locking groove 402 to rotatably connect the first end cover 40 to the rotating shaft 201. The first bearing 204 is engaged with the first end cover 40 to prevent relative rotation and wear on the first bearing 204. Figure 9 As shown, the second bearing 206 is provided with a fifth locking block to prevent the second bearing 206 from rotating relative to the second end cover 50; the second bearing 206 is configured in a first position, and the second bearing 206 and the fifth locking block are engaged in a fourth locking groove 502 to rotatably connect the second end cover 50 to the rotating shaft 201. The second bearing 206 is engaged with the second end cover 50 to prevent relative rotation and wear on the second bearing 206.

[0104] In one possible implementation, the second end cap is provided with: a third slot that mates with the second locking block; a fourth slot that mates with the second bearing; and a threaded hole that mates with the threaded end of the cleaning water pipe. In a second position, the second locking block is embedded in the third slot, and the second end cap is engaged with the rotating shaft. In a first position, the second bearing is embedded in the fourth slot, and the second end cap is rotatably connected to the rotating shaft. In this embodiment, the engagement of the third slot of the second end cap with the second locking block achieves rigid linkage between the rotating shaft and the end cap in cleaning mode, synchronously driving high-pressure water washing; the engagement of the fourth slot with the second bearing provides stable rotational support in conveying mode, and the threaded hole secures the cleaning water pipe. The dual-slot time-sharing reuse balances high-load transmission and low-resistance cleaning.

[0105] In a specific example, such as Figure 13 and Figure 14 As shown, the second end cap 50 is provided with:

[0106] A third card slot 501 that mates with the second card block 205;

[0107] The fourth slot 502 mates with the second bearing 206;

[0108] Threaded hole 503 that is threaded to the end of cleaning water pipe 80;

[0109] The second locking block 205 is configured in a second position, and the second locking block 205 is embedded in the third locking slot 501 so that the second end cover 50 is engaged with the rotating shaft 201;

[0110] The second bearing 206 is configured in a first position, and the second bearing 206 is embedded in the fourth slot 502 to rotatably connect the second end cap 50 to the rotating shaft 201.

[0111] In one possible implementation, a water channel is included within the section of the outer rotating shaft 201 of the first end cap 40. This water channel is connected to the open end of the cleaning water pipe 80 via a connecting pipe 209. The water channel includes a water inlet 208 exposed outside the rotating shaft. The water inlet 208 is connected to a rotary joint (not shown in the figure). The fixed end of the rotary joint is connected to the external water pipe, and the rotating end is connected to the water inlet 208. The design of the first interface 207, water inlet 208, water channel, and rotary joint allows each end cap and the spiral conveyor 20 to rotate in a fixed direction during material cleaning, further improving cleaning efficiency.

[0112] After setting up the first interface, water inlet, water channel, and rotary joint, the working principle of this embodiment is as follows;

[0113] Conveying mode:

[0114] like Figure 3 and Figure 4As shown, in the conveying mode, connecting pipe 209 needs to be removed, refer to... Figure 4 The spiral conveyor structure 20 is in the first position, and the first locking block 203 is disengaged from the first end cover 40; the rotating shaft 201 is rotatably connected to the first end cover 40 through the first bearing 204.

[0115] The cleaning water pipe 80 has been removed from the first end cap 40 and the second end cap 50; the hole in the first end cap 40 can be sealed with a sealing plug.

[0116] The drive motor 60 drives the screw conveyor structure 20 to rotate. The first end cover 40 and the second end cover 50 are free and stationary without any force. The screw conveyor structure 20 conveys the material from the feed port 303 to the discharge port 304 and discharges it from the discharge port 304.

[0117] Switch to cleaning mode:

[0118] Stop feeding and empty the remaining material.

[0119] like Figure 6 As shown, the displacement mechanism 70 pushes the motor and the rotating shaft 201 to move axially to the second position. The first locking block 203 is locked into the first end cover 40, the second locking block 203 is locked into the second end cover 40, and the rotating shaft 201 is engaged with the first end cover 40 and the second end cover 50.

[0120] like Figure 5 Unscrew the bolts, open the second half 301, insert the sealed end of the cleaning water pipe 80 through the first end cover 40 into the material bucket 30 and connect it with the threaded connection of the second end cover 50; close the second half 301 and fix it with bolts.

[0121] like Figure 6 A connecting pipe 209 is used to connect the first interface 207 and the opening of the cleaning water pipe 80. Three cleaning water pipes 80 are evenly distributed inside the material tank 30, surrounding the spiral conveyor structure 20. Figure 2 Unlike other embodiments, in this embodiment, the water supply pipe 210 connected to the output end of the high-pressure water pump is connected to the fixed end of the rotary joint. The rotating end of the rotary joint is connected to the water inlet 208. Therefore, when the rotating shaft 201 rotates, only the rotating end of the rotary joint rotates, while the fixed end remains stationary. Consequently, the cleaning water pipe at the output end of the high-pressure water pump does not rotate. The high-pressure water pump is turned on, drawing water from the water source and outputting it to the water inlet 208. The drive motor 60 is started and rotates at a speed of 0.5 revolutions per second. The nozzle water flow forms a dynamic rinsing net to remove adhering materials. The rinsed adhering materials are discharged from the outlet. If the rinsed adhering materials are not discharged from the outlet, the high-pressure water pump is turned off. After the residual water is drained, the second half 301 is opened, and the remaining materials are manually discharged. The cleaning water pipe 80 is removed, the displacement mechanism 70 returns to the first position, the locking mechanism separates, and the device returns to the material conveying preparation state, waiting for material conveying.

[0122] In one possible implementation, the support is provided with a displacement mechanism; the displacement mechanism is equipped with a drive motor for driving the rotation of the screw conveyor structure, and the displacement mechanism is configured to move on the support along the axial direction of the screw conveyor structure to drive the screw conveyor structure to move from a first position to a second position along the axial direction of the screw conveyor structure.

[0123] In a specific example, such as Figure 15 As shown, the displacement mechanism includes a slide rail 701 disposed on the bracket 10, a slider 702 cooperating with the slide rail 701, and a linear actuator 703 for driving the slider 702 to slide.

[0124] A linear actuator 703 is fixed to a slide rail 701, and the drive motor 60 is fixedly mounted on the slider 702. A guide groove is provided on the slide rail 701, and the slider 702 is embedded in the guide groove, allowing the slider to slide along a direction parallel to the axis of the screw conveyor structure 20. The output end of the linear actuator 703 is connected to the slider, used to drive the slider to slide between a first position and a second position. In this embodiment, the displacement mechanism 70, guided by the slide rail 701 and the slider 702, and with the thrust of the drive unit 703, achieves precise axial displacement of the drive motor 60 and the screw conveyor structure 20: the slide rail 701 ensures the straightness of the sliding trajectory, and the drive unit 703 pushes the slider 702 to move the motor, enabling the rotating shaft 201 to quickly switch between the first and second positions. The structure is compact, ensuring reliable mode switching and reducing sliding wear. It should be noted that in this embodiment, the linear actuator 703 can be a linear motor, a lead screw drive, or a telescopic cylinder; this embodiment does not limit the specific type of actuator.

[0125] In one possible implementation, such as Figure 1 and Figure 2 As shown, a third bearing 101 is provided on the support 10; the two ends of the spiral conveying structure 20 are rotatably connected to the support 10 through the third bearing 101. In this embodiment, the third bearing of the second support and the fourth bearing of the third support form a double-end support structure, and the spiral conveying structure achieves stable rotation across the entire span during material conveying.

[0126] In the description of this disclosure, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. For those skilled in the art, the specific meaning of the above terms in this disclosure can be understood according to the specific circumstances.

[0127] It should also be noted that, in the description of this disclosure, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0128] Obviously, the above embodiments of this disclosure are merely examples for clearly illustrating this disclosure, and are not intended to limit the implementation of this disclosure. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all implementation methods here. Any obvious variations or modifications derived from the technical solutions of this disclosure are still within the protection scope of this disclosure.

Claims

1. A screw feeder for dry and wet grain by-products, characterized in that, include: A material bucket fixed on a bracket; A first end cap and a second end cap are respectively installed at both ends of the material barrel and rotatably connected to the inner wall of the material barrel; A spiral conveyor structure is coaxially arranged inside the material barrel. One end of the spiral conveyor structure passes through the first end cover and is rotatably connected to the bracket, and the other end passes through the second end cover and is rotatably connected to the bracket. The spiral conveying structure includes a first position and a second position in its axial direction: In the first position, the spiral conveyor structure rotates relative to the first end cover and the second end cover; In the second position, the spiral conveying structure is engaged with the first end cover and the second end cover, and under the drive of the drive motor, the spiral conveying structure drives the first end cover and the second end cover to rotate together in the material bucket. The feeding device also includes a cleaning water pipe that can be installed inside the material hopper. One end of the cleaning water pipe is sealed and the other end is open. The open end of the cleaning water pipe is exposed from the first end cover. The sealed end of the cleaning water pipe is threadedly engaged with the second end cover. The body of the cleaning water pipe includes a water spray nozzle.

2. The screw feeder according to claim 1, characterized in that, The material hopper includes two interlocking halves, wherein the first half is fixedly mounted on a bracket, one side edge of the second half is hinged to one side edge of the first half, and the other side edge of the second half is connected to the other side edge of the first half by fasteners; after the first half and the second half are interlocked, they form a material conveying channel for accommodating the screw conveyor structure; the first half is provided with a discharge port, and the second half is provided with a feed port.

3. The screw feeder according to claim 2, characterized in that, The spiral conveyor structure includes a rotating shaft and spiral blades disposed in the middle of the rotating shaft; The spiral conveying structure further includes a first clamping block, a second clamping block, a first bearing, and a second bearing; wherein, The first locking block is fixed on the rotating shaft and positioned on the side of the first end cover away from the second end cover; The second locking block is fixed on the rotating shaft and is located on the side of the second end cover near the first end cover; The first bearing is fixed on the rotating shaft and is located on the side of the first end cover near the second end cover; The second bearing is fixed on the rotating shaft and is located on the side of the second end cover away from the first end cover.

4. The screw feeder according to claim 3, characterized in that, The first end cap is provided with: The first card slot that mates with the first card block; The second slot that mates with the first bearing; and For use as mounting holes exposed at the open end of the cleaning water pipe; The spiral conveyor structure is located in the second position, the first locking block is embedded in the first locking groove, and the first end cover is engaged with the rotating shaft; The spiral conveyor structure is located in the first position, the first bearing is embedded in the second slot, and the rotating shaft rotates relative to the first end cover.

5. The screw feeder according to claim 3, characterized in that, The second end cap is provided with: A third slot that mates with the second card block; The fourth slot that mates with the second bearing; A threaded hole that mates with the threaded end of the cleaning water pipe; The spiral conveyor structure is located in the second position, the second locking block is embedded in the third locking groove, and the second end cover is engaged with the rotating shaft; The spiral conveyor structure is located in the first position, the second bearing is embedded in the fourth slot, and the rotating shaft rotates relative to the second end cover.

6. The screw feeder according to claim 1, characterized in that, The support is provided with a displacement mechanism; the displacement mechanism is equipped with a drive motor for driving the rotation of the screw conveyor structure. The displacement mechanism is configured to move on the support along the axial direction of the screw conveyor structure, so as to drive the screw conveyor structure to move from a first position to a second position, or from a second position to a first position, along the axial direction of the screw conveyor structure.

7. The screw feeder according to claim 6, characterized in that, The displacement mechanism includes a slide rail mounted on a support, a slider that cooperates with the slide rail, and a linear actuator for driving the slider to slide. The drive motor is fixedly mounted on the slider; The slide rail is provided with a guide groove, and the slider is embedded in the guide groove; The output of the linear driver is connected to a slider.

8. The screw feeder according to claim 3, characterized in that, The section of the outer side of the first end cap includes a water channel, which is connected to the opening end of the cleaning water pipe via a connecting pipe. The water channel includes a water inlet exposed outside the shaft. The water inlet is connected to a rotary joint.

9. The screw feeder according to claim 1, characterized in that, A third bearing is provided on the bracket; The two ends of the spiral conveyor structure are rotatably connected to the support via a third bearing.

10. The screw feeder according to claim 2, characterized in that, The fastener includes a fixing block that protrudes outward from the opposite edge of the hinge side of the first half and the second half respectively. The fixing block is provided with a through hole. Bolts are inserted into the through hole of the fixing block of the first half and the through hole of the corresponding fixing block of the second half to fix the first half and the second half.

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