Wheat drying equipment for flour processing

Abstract

This application discloses a wheat drying device for flour processing, belonging to the field of primary wheat processing, used in flour production. It includes a support frame, an inlet pipe, an outlet pipe, a drying chamber with heating pipes and an exhaust box with exhaust pipes, all inclined relative to a horizontal plane. The drying chamber and exhaust box form a space to accommodate a spiral tube. Both the drying chamber and exhaust box have through holes for gas flow. The two ends of the spiral tube are connected to the inlet pipe and the outlet pipe, respectively. The inlet pipe has a spiral tube feed port communicating with the spiral tube, and the spiral tube outlet is located in the outlet pipe. The spiral tube is a hollow rectangular spiral tube with several drying holes on its inner and outer walls. A stirring blade is also installed inside the inlet pipe, and the stirring blade is connected to the output shaft of a stirring motor. This application can dry wheat after soaking and washing to meet the requirements of subsequent flour processing, and can improve drying efficiency and quality, ensuring drying effect.

Description

Technical Field

[0001] This application belongs to the field of primary wheat processing, and more specifically, relates to a wheat drying apparatus for flour processing. Background Technology

[0002] In the flour processing process, wheat must first be washed to remove impurities, dust or other unclean substances contained in the wheat raw material. After washing, the washed wheat raw material should be dried to meet the process requirements for flour processing. Referring to Chinese Patent Publication No. CN112902613A, a wheat drying device for flour processing is disclosed, specifically including a fixed frame, a stirring device, a drying device, a feeding device, and a base. The fixed frame is fixedly connected to the base. The stirring device is provided inside the fixed frame. A first motor is fixedly connected to the left end of the fixed frame, and the main shaft of the first motor passes through the fixed frame. The main shaft of the first motor is rotatably connected to the fixed frame. A spiral blade is fixedly connected to the end of the main shaft of the first motor. In this prior art, through the arrangement of the turntable, drying filter, and air pump, this arrangement, combined with the connection between the air pump and the transfer pipe, the fixed connection between the heating box and the temperature and humidity sensors, the sliding connection between the turntable and the drying filter, and the hinge connection between the fixed box and the fixed cover, minimizes the waste of heat energy when using the device to dry wheat, facilitates the replacement of the drying mechanism, and ensures the drying efficiency of wheat.

[0003] Referring to Chinese Patent Publication No. CN117680418A, a wheat washing and drying integrated machine for flour production is disclosed, specifically outlining the following technical solution: A circulation mechanism is provided on the rear wall of the washing tank; the circulation mechanism includes three first water pipes, pipe joints, and a pump. The outer sides of the first water pipes are disposed inside the rear wall of the washing tank. Connecting pipes are fixedly connected to the bottom ends of two of the first water pipes, and the other ends of the two connecting pipes are fixedly connected to the left and right ends of the pipe joint. An outlet is fixedly connected to the output end of the pump, and the other end of the outlet is fixedly connected to the rear end of the pipe joint. This prior art, through the design of the washing tank, circulation mechanism, and conveyor, solves the problem of high-pressure washing of wheat, removing impurities, dust, and other unclean substances, thereby improving grain quality, removing mud and impurities from the wheat surface, and moving the wheat, thus improving work efficiency.

[0004] In other words, in the aforementioned existing technologies, air pumps, filters, turntables, or drying boxes with fans are mostly used to dry the washed wheat. However, the applicant believes that improving the movement process, running path, and structures involved in the drying process of the washed wheat can further improve the drying efficiency and quality of the washed wheat. Summary of the Invention

[0005] The purpose of this application is to provide a wheat drying device for flour processing, which can dry wheat after soaking and washing to meet the requirements of subsequent flour processing, and can improve drying efficiency and quality, and ensure drying effect.

[0006] To achieve the above objectives, this application employs the following technical solution:

[0007] The wheat drying device for flour processing described in this application includes a support frame located at both ends of a drying chamber. An exhaust box is located above the drying chamber. The drying chamber is connected to a heating pipeline, and the exhaust box is connected to an exhaust pipe. The drying chamber and the exhaust box form a space for accommodating a spiral tube. The drying chamber and the exhaust box have several through holes for gas flow distributed on their sidewalls facing the spiral tube. The drying chamber and the exhaust box are inclined relative to the horizontal plane, and their ends are respectively connected to an inlet pipe and an outlet pipe. The height of the inlet pipe relative to the horizontal plane is higher than that of the outlet pipe relative to the horizontal plane. The spiral tube has its ends connected to the inlet pipe and the outlet pipe. The inlet pipe has a spiral tube feed port communicating with the spiral tube, and the spiral tube outlet is located in the outlet pipe. The spiral tube is a hollow rectangular spiral tube with several drying holes on its inner and outer walls. A stirring blade is also provided inside the inlet pipe, and the stirring blade is connected to the output shaft of a stirring motor.

[0008] As one of the preferred technical solutions, the inlet pipe described in this application includes a cylindrical sidewall and a bottom surface, the spiral tube inlet is located on the bottom surface, a motor fixing frame is provided on the cylindrical sidewall of the inlet pipe, and the stirring motor is located on the motor fixing frame.

[0009] As one of the preferred technical solutions, the inlet pipe and outlet pipe described in this application are coaxially provided with a fixed shaft, and the two ends of the fixed shaft are respectively located in the internal space of the inlet pipe and the outlet pipe; the stirring blade includes a bushing coaxially provided with the fixed shaft and stirring blades distributed circumferentially on the bushing; a connecting seat is connected to the bushing of the stirring blade, and the stirring blade is connected to the output shaft of the stirring motor through the connecting seat.

[0010] As one of the preferred technical solutions, the connecting seat described in this application includes several rods connected to the bushing of the stirring blade. The end of the rod away from the bushing is provided with a circular plate with a coupling, and the circular plate is connected to the output shaft of the stirring motor through the coupling.

[0011] As one of the preferred technical solutions, the spiral tube described in this application is further provided with a spiral inner tube. The spiral inner tube has several air outlets distributed along its length. The bottom end of the spiral inner tube is the inner tube connection end, which extends from the inside of the outlet tube and is connected to the external heating pipeline.

[0012] As one of the preferred technical solutions, the exhaust pipe described in this application has three branch pipes, which are respectively connected to the middle, front and rear regions of the exhaust box. The exhaust box is provided with a partition between the front, middle and rear regions.

[0013] As one of the preferred technical solutions, the heating pipeline described in this application has three branch pipelines, which are respectively connected to the middle, front and rear areas of the drying box. The drying box is provided with a partition between the front, middle and rear areas.

[0014] As one of the preferred technical solutions, the outlet pipe described in this application is further provided with a receiving pipe at the outlet.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] This application utilizes a spiral tube in a spiral shape, which, when tilted, works in conjunction with an inner spiral tube to dry wheat that has been soaked and washed inside. The drying airflow consists of two parts: airflow provided by the drying chamber through a gas flow passage and airflow provided by the inner spiral tube within the spiral tube. The combination of these two components improves the efficiency and quality of wheat drying, meeting the technological requirements of subsequent flour processing. Attached Figure Description

[0017] Figure 1 This is the three-dimensional representation of the present application. Figure 1 .

[0018] Figure 2 This is the three-dimensional representation of the present application. Figure 2 .

[0019] Figure 3 yes Figure 2 A magnified view of part I in the middle.

[0020] Figure 4 This is a three-dimensional view of the internal structure of this application.

[0021] Figure 5 This is the main view of this application.

[0022] Figure 6 yes Figure 5 A cross-sectional view at the position and direction shown in AA.

[0023] In the diagram: 1. Heating pipeline; 2. Drying box; 3. Exhaust box; 4. Exhaust pipe; 5. Inlet pipe; 6. Outlet pipe; 7. Fixed shaft; 8. Receiving pipe; 9. Support frame; 10. Motor mounting frame; 11. Stirring blades; 12. Spiral tube inlet; 13. Spiral tube; 14. Drying hole; 15. Stirring motor; 16. Connecting seat; 17. Spiral inner tube; 18. Inner tube connection end. Detailed Implementation

[0024] The technical solutions described in this application will be further described below with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] See Figures 1 to 6 As shown, a wheat drying device for flour processing includes a drying box 2 with a semi-circular cross-section and an exhaust box 3. The drying box 2 and the exhaust box 3 form a circular space for accommodating a spiral tube 13 by fasteners or welding. An inlet pipe 5 is provided at the entrance of the circular space. The inlet pipe 5 is connected to the drying box 2 and the exhaust box 3 by fasteners, and a sealing ring can be provided at the connection position. An outlet pipe 6 is provided at the outlet of the space formed by the drying box 2 and the exhaust box 3. The outlet pipe 6 is connected to the drying box 2 and the exhaust box 3 by fasteners. The inlet pipe 5 is equipped with stirring blades 11, which are located on the output shaft of the stirring motor 15. The bottom surface of the inlet pipe 5 has a spiral tube inlet 12 communicating with the spiral tube 13, and the outlet of the spiral tube 13 is located inside the outlet pipe 6. Several through holes for gas flow are distributed on the arc-shaped inner walls of the drying chamber 2 and the exhaust chamber 3, facing the location of the spiral tube 13. The drying chamber 2, exhaust chamber 3, and spiral tube 13 are all inclined relative to the horizontal plane. A support frame 9 is provided at the bottom of the drying chamber 2, positioned on a horizontal plane. The drying chamber 2 and exhaust chamber 3 are respectively connected to the corresponding heating pipe 1 and exhaust pipe 4 via branch pipes. Several drying holes 14 are provided on the inner and outer walls of the spiral tube 13.

[0027] In the technical solution described in this embodiment, the drying chamber 2 and the exhaust chamber 3 are hollow boxes with a semi-circular longitudinal section. The inner walls of the drying chamber 2 and the exhaust chamber 3 are semi-circular plates with several through holes for the flow of heating gas. External heating gas enters the drying chamber 2 through the heating pipe 1 and branch pipes, and is distributed into the space where the spiral tube 13 is located through the several through holes on the drying chamber 2. Since moisture is generated during the drying process, the exhaust pipe 4 is connected to the external negative pressure pipe, and the exhaust pipe 4 is connected to the exhaust chamber 3 through branch pipes. The several through holes on the exhaust chamber 3 allow the moisture in the space to be discharged.

[0028] In the technical solution described in this embodiment, the spiral tube 13 is a hollow pipe with a rectangular cross-section. A plurality of drying holes 14 are distributed on the spiral tube 13, located on its inner and outer walls. The inner wall of the spiral tube 13 refers to the end face facing the central axis of the inlet pipe 5 and the outlet pipe 6, while the outer wall refers to the end face facing the arc-shaped inner wall of the drying chamber 2 and the exhaust chamber 3. The inner diameter of the drying holes 14 is smaller than the grain size of wheat, which satisfies the requirements for drying the wheat and its flow within the spiral tube 13.

[0029] In the technical solution described in this embodiment, a stirring blade 11 is provided inside the inlet pipe 5. The stirring blade 11 enables the washed wheat placed in the inlet pipe 5 to be fed into the spiral tube inlet 12, which is connected to the interior of the spiral tube 13. Since the spiral tube 13 is inclined relative to the horizontal plane, the washed wheat fed in can flow along the spiral tube 13 to the bottom.

[0030] Example 2

[0031] See also Figures 1 to 6As shown, a wheat drying device for flour processing includes an inlet pipe 5 and an outlet pipe 6, both comprising cylindrical sidewalls and bottom surfaces. The spiral inlet 12 is located on the bottom surface of the inlet pipe 5 and communicates with the inlet of the spiral pipe 13. The inlet pipe 5 is connected to the spiral pipe 13, the drying chamber 2, and the exhaust chamber 3 via its bottom surface. The outlet pipe 6 is connected to the drying chamber 2, the exhaust chamber 3, and the spiral pipe 13 via its bottom surface. The outlet of the spiral pipe 13 is located within the internal space of the outlet pipe 6. A motor mounting bracket 10 is connected to the exhaust chamber 3 via its cylindrical sidewall. A stirring motor 15 is mounted on the motor mounting bracket 10, and the output shaft of the stirring motor 15 is connected to stirring blades 11 via a connecting seat 16. The connecting seat 16 includes a coupling connected to the output shaft of the stirring motor 15. The coupling is connected to a circular plate, which is connected to a bushing in the stirring blades 11 via several rods. The bushing is coaxially arranged with and rotates relative to a fixed shaft 7. The bushing has several arc-shaped plates forming stirring blades distributed circumferentially. The fixed shaft 7 is coaxially arranged with the inlet pipe 5 and the outlet pipe 6, and both ends of the fixed shaft 7 extend into the inlet pipe 5 and the outlet pipe 6 respectively and are fixedly connected to the bottom surfaces of the inlet pipe 5 and the outlet pipe 6. The drying box 2 and the exhaust box 3 are respectively connected to the corresponding heating pipe 1 and exhaust pipe 4 through three branch pipes. The three branch pipes are located at the front, middle and rear of the drying box 2 and the exhaust box 3 respectively, and partitions are provided inside the drying box 2 and the exhaust box 3 to form independent front, middle and rear sections connected to the branch pipes.

[0032] The structure and connection relationships of the remaining parts are the same as those described in the foregoing embodiments. Those skilled in the art can understand the technical solutions described in this embodiment based on the foregoing embodiments.

[0033] In the technical solution described in this embodiment, the motor mounting bracket 10 is fixed on the cylindrical side wall of the inlet pipe 5. The motor mounting bracket 10 is equipped with a stirring motor 15. The stirring motor 15 has a gearbox body, and a connecting seat 16 is connected to the output shaft of the gearbox body. The connecting seat 16 can drive the stirring blade 11 to rotate. The stirring blade 11 can deliver the washed wheat into the spiral tube 13.

[0034] In the technical solution described in this embodiment, the drying chamber 2 and the exhaust chamber 3 are divided into independent front, middle, and rear sections by partitions. Each section is connected to its corresponding heating pipe 1 and exhaust pipe 4 via branch pipes, enabling zoned air supply and dehumidification, which further facilitates airflow stability. Temperature and humidity sensors can be installed in the front, middle, and rear sections of the drying chamber 2 and the exhaust chamber 3. The installation of these sensors is prior art, and those skilled in the art can flexibly install them according to prior art documents such as CN112902613A described in the background section.

[0035] Example 3

[0036] See also Figures 1 to 6 As shown, a wheat drying device for flour processing includes a spiral tube 13 with a hollow rectangular cross-section. An inner spiral tube 17, also a hollow tube with a circular cross-section, is arranged inside the spiral tube 13. The inner spiral tube 17 is sealed at its top near the inlet pipe 5, and its bottom end extends from the outlet pipe 6 and connects to an inner tube connection end 18, which is connected to an external heating pipeline. Several downward-sloping air outlets are distributed along the length of the inner spiral tube 17.

[0037] The structure and connection relationships of the remaining parts are the same as those described in the foregoing embodiments. Those skilled in the art can understand the technical solutions described in this embodiment based on the foregoing embodiments.

[0038] In the technical solution described in this embodiment, the spiral tube 13 is provided with a spiral inner tube 17, and the spiral inner tube 17 has a plurality of air outlet holes distributed on it. The air outlet holes are oblique holes, which can realize the discharge of airflow in the spiral inner tube 17 and help disperse the washed wheat in the spiral tube 13 and move it downward along the spiral tube 13. The spiral inner tube 17 can realize the introduction of hot air through the inner tube connecting pipe 18. Due to the limitation of the diameter of the oblique holes and the diameter of the spiral inner tube 17, the airflow velocity in the spiral inner tube 17 is higher than the air supply velocity of the drying box 2. Therefore, this also shows that the inner diameter of the through holes used for airflow in the drying box 2 and the exhaust box 3 is larger than the inner diameter of the spiral inner tube 7.

[0039] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A wheat drying device for flour processing, comprising a support frame (9) located at both ends of a drying chamber (2), an exhaust box (3) disposed above the drying chamber (2), the drying chamber (2) being connected to a heating pipeline (1), and the exhaust box (3) being connected to an exhaust pipe (4), characterized in that, The drying chamber (2) and the exhaust chamber (3) form a space to accommodate the spiral tube (13). The drying chamber (2) and the exhaust chamber (3) have several through holes for gas flow distributed on their sidewalls facing the spiral tube (13). The drying chamber (2) and the exhaust chamber (3) are inclined relative to the horizontal plane, and their two ends are connected to the inlet pipe (5) and the outlet pipe (6) respectively. The height of the inlet pipe (5) relative to the horizontal plane is higher than the height of the outlet pipe (6) relative to the horizontal plane. The spiral tube (13) 3) The two ends are connected to the inlet pipe (5) and the outlet pipe (6) respectively. The inlet pipe (5) is provided with a spiral tube feed port (12) that communicates with the spiral tube (13). The outlet of the spiral tube (13) is located in the outlet pipe (6). The spiral tube (13) is a spiral tube with a hollow rectangular cross section. The inner wall and outer wall of the spiral tube (13) are provided with several drying holes (14). The inlet pipe (5) is also provided with stirring blades (11). The stirring blades (11) are connected to the output shaft of the stirring motor (15).

2. The wheat drying apparatus for flour processing according to claim 1, characterized in that, The inlet pipe (5) includes a cylindrical side wall and a bottom surface. The spiral tube inlet (12) is located on the bottom surface. A motor mounting bracket (10) is provided on the cylindrical side wall of the inlet pipe (5). The stirring motor (15) is located on the motor mounting bracket (10).

3. The wheat drying apparatus for flour processing according to claim 2, characterized in that, The inlet pipe (5) and the outlet pipe (6) are coaxially provided with a fixed shaft (7), and the two ends of the fixed shaft (7) are respectively located in the internal space of the inlet pipe (5) and the outlet pipe (6); the stirring blade (11) includes a bushing coaxially provided with the fixed shaft (7) and stirring blades distributed circumferentially on the bushing; a connecting seat (16) is connected to the bushing of the stirring blade (11), and the stirring blade (11) is connected to the output shaft of the stirring motor (15) through the connecting seat (16).

4. The wheat drying apparatus for flour processing according to claim 3, characterized in that, The connecting seat (16) includes several rods connected to the bushing of the stirring blade (11). The end of the rod away from the bushing is provided with a circular plate with a coupling. The circular plate is connected to the output shaft of the stirring motor (15) through the coupling.

5. The wheat drying apparatus for flour processing according to any one of claims 1 to 4, characterized in that, The spiral tube (13) is also provided with a spiral inner tube (17). The spiral inner tube (17) has several air outlets distributed along its length. The bottom end of the spiral inner tube (17) is the inner tube connection end (18). The inner tube connection end (18) extends out from the inside of the outlet tube (6) and is connected to the external heating pipeline.

6. The wheat drying apparatus for flour processing according to claim 5, characterized in that, The exhaust pipe (4) has three branch pipes, which are connected to the middle, front and rear areas of the exhaust box (3) respectively. The exhaust box (3) has a partition between the front, middle and rear areas.

7. The wheat drying apparatus for flour processing according to claim 5, characterized in that, The heating pipeline (1) has three branch pipelines, which are connected to the middle, front and rear areas of the drying box (2) respectively. The drying box (2) is provided with partitions between the front, middle and rear areas.

8. The wheat drying apparatus for flour processing according to claim 5, characterized in that, The outlet pipe (6) is also provided with a receiving pipe (8) at the outlet.

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