Simple powder screw conveyor

Abstract

The utility model discloses a simple powder spiral conveyer, which comprises a speed reducing motor, a connecting sleeve and a spiral pipe body which are connected through flanges, a spiral inner shaft is arranged in the spiral pipe body, the spiral inner shaft comprises a spiral hollow shaft, two shaft heads are arranged at the feeding end and the discharging end of the spiral hollow shaft, a forward spiral blade is arranged at the feeding end of the spiral hollow shaft, and the forward spiral blade is arranged at the discharging end of the spiral hollow shaft. A reverse spiral blade is arranged at the discharging end; an output shaft of the gear motor is connected with the spiral inner shaft through two chain wheels and a duplex chain, and bearings are installed on shaft heads at the two ends of the spiral inner shaft and assembled in the supporting base. A feeding port is formed in the upper side of the feeding end of the spiral pipe body and connected with a discharging port of the powder storage bin, and a discharging port is formed in the lower side of the discharging end of the spiral pipe body. The spiral conveyor is simple in structure, stable in conveying, efficient and reliable, the spiral conveyor can be immediately put into use after being installed and powered on, the service life of the spiral conveyor is prolonged, and the later maintenance cost of the spiral conveyor is reduced.

Description

Technical Field

[0001] The utility model relates to a simple powder screw conveyor, belonging to the field of screw conveyors. Background Art

[0002] The powder screw conveyor is a commonly used powder conveying component in the stabilized soil batching plant equipment and asphalt mixture mixing equipment at present, and undertakes the function of conveying cement, mineral powder and other proportioning materials for the mixing materials of the stabilized soil batching plant equipment and asphalt mixture mixing equipment. At present, the screw conveyor usually adopts a reduction motor, a spline shaft and a spline sleeve to drive the rotation of the spiral inner shaft to convey powder. This structure not only easily causes the fatigue damage of the splines of the spline shaft or spline sleeve, but also easily causes the fracture of the spline shaft, which affects the normal construction of the mixing equipment and delays the construction period. Summary of the Invention

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a simple powder screw conveyor, which has stable, reliable powder conveying and high conveying efficiency.

[0004] In order to achieve the above object, a simple powder screw conveyor adopted by the utility model comprises a reduction motor, a connecting sleeve and a spiral pipe body connected by a flange. A spiral inner shaft is installed in the spiral pipe body. The spiral inner shaft comprises a spiral hollow shaft. Two shaft heads are arranged at the inlet and outlet ends of the spiral hollow shaft. A forward spiral blade is arranged at the inlet end of the spiral hollow shaft, and a reverse spiral blade is arranged at the outlet end.

[0005] The output shaft of the reduction motor is connected with the spiral inner shaft through two sprockets and a double-row chain. Bearings are installed on the shaft heads at both ends of the spiral inner shaft. The bearings are assembled inside the support seats and are used for supporting and axially positioning the spiral inner shaft.

[0006] An inlet is arranged on the upper side of the inlet end of the spiral pipe body. The inlet is connected with the outlet of the powder storage bin. An outlet is arranged on the lower side of the outlet end of the spiral pipe body.

[0007] In some embodiments, the reduction motor adopts an integral cycloid reduction motor.

[0008] In some embodiments, the motor flange of the reduction motor is connected with the flange at one end of the connecting sleeve through bolts, washers and nuts.

[0009] In some embodiments, the connecting flange at the inlet end of the spiral pipe body is connected with the flange at the other end of the connecting sleeve through bolts, washers and nuts.

[0010] In some embodiments, an observation port is arranged on the lower side of the inlet end of the spiral pipe body, and a detachable cover plate is installed on the observation port.

[0011] In some embodiments, the cover plate is connected to the observation port through bolts, washers and nuts.

[0012] In some embodiments, the feed port, the discharge port and the observation port are all welded to the spiral pipe body.

[0013] In some embodiments, the shaft head, the forward spiral blade and the reverse spiral blade are all welded to the spiral hollow shaft.

[0014] In some embodiments, the installation length of the forward spiral blade is greater than that of the reverse spiral blade.

[0015] Compared with the prior art, the simple powder spiral conveyor of the present utility model has a simple structure, stable conveying, high efficiency and reliability. The spiral conveyor can be put into use immediately after being installed and powered on, which not only improves the service life of the spiral conveyor, but also reduces the later maintenance cost of the spiral conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a structural sectional view of the present utility model;

[0018] Figure 2 is Figure 1 the structural top view of;

[0019] Figure 3 is a schematic structural view of the spiral inner shaft of the present utility model;

[0020] Figure 4 is a schematic structural view of the spiral pipe body of the present utility model;

[0021] In the figure: 1, reduction motor; 2, sprocket; 3, double-row chain; 4, support seat; 5, bearing; 6, connecting sleeve; 7, spiral inner shaft; 8, spiral pipe body; 9, shaft head; 10, spiral hollow shaft; 11, forward spiral blade; 12, reverse spiral blade; 13, feed port; 14, discharge port; 15, observation port; 16, cover plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the objectives, technical solutions, and advantages of the present utility model clearer, the technical solutions of this application will be described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. Without conflict, the technical features in the embodiments of this application and the embodiments can be combined with each other.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the protected content of the present utility model.

[0024] As Figures 1-4 shown, a simple powder screw conveyor includes a reduction motor 1, a connecting sleeve 6, and a screw pipe body 8 connected by flanges. A screw inner shaft 7 is installed inside the screw pipe body 8. The screw inner shaft 7 includes a screw hollow shaft 10. Two shaft heads 9 are provided at the inlet and outlet ends of the screw hollow shaft 10. A forward screw blade 11 is provided at the inlet end of the screw hollow shaft 10, and a reverse screw blade 12 is provided at the outlet end.

[0025] The output shaft of the reduction motor 1 is connected to the screw inner shaft 7 through two sprockets 2 and a double-row chain 3. Bearings 5 are installed on the shaft heads 9 at both ends of the screw inner shaft 7. The bearings 5 are assembled inside the support seats 4. The bearings 5 are used for the support and axial positioning of the screw inner shaft 7 to ensure the high-speed rotation of the screw inner shaft 7.

[0026] An inlet 13 is provided on the upper side of the inlet end of the screw pipe body 8. The inlet 13 is connected to the outlet of the powder storage bin. An outlet 14 is provided on the lower side of the outlet end of the screw pipe body 8. Cement or mineral powder is discharged through the outlet 14 of the screw pipe body 8 under the drive of the forward screw blade 11 on the screw inner shaft 7 to be stirred with other aggregates in the mixing equipment to form a high-quality mixture, which is applied to road construction, ensuring the road construction quality and reducing the later road maintenance cost.

[0027] In some embodiments, the reduction motor 1 uses an integral cycloid reduction motor. The cycloid reduction motor is reliable in quality and stable in operation, mainly providing driving force for screw conveying powder.

[0028] In some embodiments, the motor flange of the integral cycloid reduction motor is connected to the flange at one end of the connecting sleeve 6 through bolts, washers, and nuts. The flange at the other end of the connecting sleeve 6 is also connected to the connecting flange at the inlet end of the screw pipe body 8 through bolts, washers, and nuts, which is convenient for disassembly and assembly.

[0029] In some embodiments, as Figure 1 shown, an observation port 15 is provided on the lower side of the feed end of the spiral tube body 8. A cover plate 16 is installed on the observation port 15 through bolts, washers and nuts. The cover plate 16 is convenient to disassemble, and the spiral conveyor can be maintained regularly through the cover plate 16.

[0030] In some embodiments, the feed port 13, the discharge port 14 and the observation port 15 are all welded to the spiral tube body 8, and the structural stability is high.

[0031] In some embodiments, as Figure 3 shown, the shaft head 9, the forward spiral blade 11 and the reverse spiral blade 12 are all welded to the spiral hollow shaft 10, and the structural stability is high. The shaft head 9 at the feed end on the spiral hollow shaft 10 is connected to the driving sprocket; the forward spiral blade 11 pushes the powder forward and discharges it from the discharge port 14, and the reverse spiral blade 12 reversely pushes the powder to prevent the powder from entering the bearing 5 at the discharge end, which has the function of protecting the bearing 5 and preventing the bearing 5 from being damaged, and improves the service life of the bearing 5.

[0032] In some embodiments, as Figure 3 shown, the installation length of the forward spiral blade 11 is greater than the installation length of the reverse spiral blade 12, which ensures that the powder is effectively pushed towards the discharge port 14 of the spiral tube body 8.

[0033] During use, the powder (such as cement or mineral powder, etc.) enters from the feed port 13 of the spiral tube body 8, and under the push of the forward spiral blade 11 on the spiral inner shaft 7, it moves towards the discharge port 14. At the same time, under the reverse action of the reverse spiral blade 12 at the discharge end of the spiral inner shaft 7, the powder is discharged through the discharge port 14 to the mixing equipment and stirred with other aggregates to form a high-quality mixture, which is paved on the road base or surface layer. This simple powder spiral conveyor is stable and reliable in conveying, meets the user requirements, has a simple structure and accurate conveying, ensures the quality of the finished material of the mixing equipment, and meets the use performance of the road.

[0034] The simple powder spiral conveyor of the present utility model can be put into use immediately after being powered on, which not only improves the service life of the spiral conveyor, but also reduces the later maintenance cost of the spiral conveyor.

[0035] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments rather than other features, the combination of the features of different embodiments also means that it is within the protection scope of the present utility model and forms different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

Claims

1. A simple powder screw conveyor, characterized in that, It includes a reduction motor (1) connected by a flange, a connecting sleeve (6) and a spiral tube body (8). A spiral inner shaft (7) is installed in the spiral tube body (8). The spiral inner shaft (7) includes a spiral hollow shaft (10). Two shaft heads (9) are provided at the inlet and outlet ends of the spiral hollow shaft (10). A forward spiral blade (11) is provided at the inlet end of the spiral hollow shaft (10), and a reverse spiral blade (12) is provided at the outlet end. The output shaft of the reduction motor (1) is connected to the spiral inner shaft (7) through two sprockets (2) and a double-row chain (3). Bearings (5) are installed on the shaft heads (9) at both ends of the spiral inner shaft (7). The bearings (5) are assembled inside a support seat (4). The bearings (5) are used for supporting and axially positioning the spiral inner shaft (7). An inlet (13) is provided on the upper side of the inlet end of the spiral tube body (8). The inlet (13) is connected to the outlet of the powder storage bin. An outlet (14) is provided on the lower side of the outlet end of the spiral tube body (8).

2. The simple powder screw conveyor according to claim 1, characterized in that, The reduction motor (1) is an integral cycloidal reduction motor.

3. The simple powder screw conveyor according to claim 1, characterized in that, The motor flange of the reduction motor (1) is connected to the flange at one end of the connecting sleeve (6) through bolts, washers and nuts.

4. A simple powder screw conveyor according to claim 1 or 3, characterized in that, The connecting flange at the inlet end of the spiral tube body (8) is connected to the flange at the other end of the connecting sleeve (6) through bolts, washers and nuts.

5. The simple powder screw conveyor according to claim 1, characterized in that, An observation port (15) is provided on the lower side of the inlet end of the spiral tube body (8). A detachable cover plate (16) is installed on the observation port (15).

6. The simple powder screw conveyor according to claim 5, wherein, The cover plate (16) is connected to the observation port (15) through bolts, washers and nuts.

7. The simple powder screw conveyor according to claim 5, characterized in that The inlet (13), outlet (14) and observation port (15) are all welded to the spiral tube body (8).

8. The simple powder screw conveyor according to claim 1, characterized in that, The shaft head (9), forward spiral blade (11) and reverse spiral blade (12) are all welded to the spiral hollow shaft (10).

9. The simple powder screw conveyor according to claim 1, wherein, The installation length of the forward spiral blade (11) is greater than that of the reverse spiral blade (12).

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