Blanking anti-blocking device of concrete mixing plant

Abstract

The utility model provides a concrete mixing plant blanking anti-blocking device which comprises a mixing drum and supporting rods, the supporting rods are arranged on the side face of the mixing drum, the mixing drum is provided with a first rotating shaft, the first rotating shaft is in driving connection with a first motor, the first rotating shaft is provided with a plurality of mixing rods, the bottom of the mixing drum is connected with a blanking hopper through a valve, and a discharging pipe is arranged at the bottom of the blanking hopper. A supporting plate is arranged on the side face of the lower end of the supporting rod, a hydraulic rod is arranged on the top of the supporting plate, a second motor is fixedly arranged at the telescopic end of the hydraulic rod, and an output shaft of the second motor is in driving connection with the second rotating shaft; the second rotating shaft is connected to the bottom of the lifting base. Concrete is brought out through rotation of the spiral blade, after discharging is completed, the lifting base drives the spiral blade to ascend to complete closing of the discharging pipe, meanwhile, the spiral blade reversely rotates to enable the concrete at the bottom of the discharging hopper to be in a flowing state, and blockage caused by aggregate sinking and gathering is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete processing equipment, in particular to a material unloading anti-blocking device for a concrete mixing station. Background Art

[0002] With the rapid development of the construction industry, concrete mixing plants have become indispensable equipment in the modern construction industry. Their primary function is to mix raw materials such as aggregate, cement, water, and additives in a specific proportion to produce concrete that meets specific requirements. In a concrete mixing plant, the discharger is a key component connecting the main mixer to the transport vehicle. It is responsible for discharging the mixed concrete from the main mixer and delivering it to the transport vehicle.

[0003] The structure of a typical concrete mixing plant's unloading mechanism is relatively simple, primarily consisting of a discharge port, a hopper, and a vibrator. Concrete must rotate continuously within the drum to maintain a uniform flow. When the concrete is stationary, aggregates sink and slurry rises, making it prone to blockage during unloading. This not only affects the plant's production efficiency but can also damage the unloading mechanism. The vibrations generated by the vibrator break up the static friction and adhesion between material particles, allowing the material to flow more easily under the influence of gravity, thus preventing blockage. Prior art concrete mixing plant unloading and anti-blocking devices have the following problems: after a batch is unloaded and the discharge valve is closed, the concrete at the bottom of the unloading mechanism remains stationary without being stirred. Under the influence of gravity, the liquid rises while the solid aggregate sinks to the bottom. The raw materials are squeezed together, easily forming a pile in the discharge port and hopper. The vibrations of the vibrator only squeeze the aggregates more tightly together, further exacerbating the blockage. Utility Model Content

[0004] In view of this, the present invention proposes a concrete mixing station unloading anti-blocking device to solve the above-mentioned problems.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] The cam is connected to the bottom of the mixing drum by a first motor and the second motor is connected to the mixing drum by a first end.

[0007] Preferably, the side of the lifting seat is provided with an annular receiving groove, a slip ring and a spring, the receiving groove is provided with a slip ring, the slip ring is provided with an opening, a spring is provided in the middle of the opening, and both ends of the spring are respectively connected to the side of the opening.

[0008] Preferably, it also includes a cleaning mechanism, which includes a connecting arm, bristles, a disc, a water outlet nozzle, a water pipe and a water pump. A plurality of connecting arms are provided on the side of the second rotating shaft, and bristles are provided on the end of the connecting arm. A disc is provided on the top surface of the second motor, and a cavity is provided in the disc. The plurality of water outlet nozzles are arranged on the side of the disc, and the water outlet nozzle is connected to the cavity. The water pump is connected to the cavity through a water pipe, and the water pump is provided on the top surface of the support plate.

[0009] Preferably, it further comprises a feed hopper, which is arranged at the top of the mixing drum, and the bottom of the feed hopper is connected to the mixing drum. The opening of the feed hopper faces upward, and an inclined portion is provided at the bottom.

[0010] Preferably, the water pipe is a flexible polypropylene bellows telescopic pipe.

[0011] Preferably, the spiral blade has a conical structure as a whole.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The spiral blades rotate to bring out the concrete. After unloading is completed, the lifting seat drives the spiral blades to rise. When the lifting seat rises above the discharge channel, the lifting seat is located in the discharge pipe, the discharge pipe is closed and the discharge is stopped. At the same time, the spiral blades rotate in the opposite direction to make the concrete at the bottom of the hopper flow upward continuously, thereby preventing the aggregate from sinking and accumulating and clogging the discharge pipe.

[0014] 2. By adjusting the rotation speed of the spiral blade, the material discharge speed can be automatically adjusted according to the actual situation, and the material discharge speed can be accelerated or slowed down to adapt to different usage conditions;

[0015] 3. Set up a cleaning mechanism. When it is necessary to stop unloading, start the hydraulic rod. The telescopic end of the hydraulic rod rises upward and drives the second motor to rise. The rising of the second motor drives the disc to rise. Start the water pump. The water pump pumps clean water into the cavity inside the disc and sprays it out through the water outlet nozzles distributed on the side of the disc. The water flow will clean the inner wall of the discharge pipe. At the same time, the rotation of the second motor drives the second rotating shaft to rotate. The rotation of the second rotating shaft drives the connecting arm and the bristles to rotate, thereby further cleaning the inner wall of the discharge pipe, improving the cleanliness of the discharge pipe, and preventing concrete from adhering to the inner wall of the discharge pipe, resulting in unsmooth discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a concrete mixing station unloading anti-blocking device according to the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of a concrete mixing station unloading anti-blocking device according to the present invention;

[0019] Figure 3 for Figure 2 Cross-section at point A in the middle;

[0020] Figure 4 for Figure 2 Enlarged view of the middle BB;

[0021] Figure markings: 1. feed hopper; 2. first motor; 3. mixing drum; 4. lower hopper; 5. discharge pipe; 6. discharge channel; 7. bristles; 8. water outlet nozzle; 9. disc; 10. second motor; 11. hydraulic rod; 12. water pipe; 13. water pump; 14. support plate; 15. inclined portion; 16. first rotating shaft; 17. stirring rod; 18. valve; 19. support rod; 20. lifting seat; 21. spiral blade; 22. second rotating shaft; 23. connecting arm; 24. cavity; 25. annular receiving groove; 26. slip ring; 27. spring. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0023] See also Figures 1 to 4The utility model provides a concrete mixing station unloading anti-blocking device, including a mixing drum 3 and a support rod 19, a plurality of support rods 19 are arranged on the side of the mixing drum 3, and a plurality of support rods 19 are evenly connected to the side of the mixing drum 3. Its function is to stably fix the mixing drum 3 on the ground. The mixing drum 3 is cylindrical in shape. The mixing drum 3 is provided with a first rotating shaft 16, one end of the first rotating shaft 16 is rotatably connected to the bottom of the mixing drum 3, and the other end passes through the mixing drum 3 and is driven by a first motor 2. The first motor 2 is arranged on the top surface of the mixing drum 3, and a plurality of stirring rods 17 are provided on the first rotating shaft 16. The bottom of the mixing drum 3 is connected to the valve 1. 8 is connected to a lower hopper 4, the bottom of the lower hopper 4 is in an inverted cone shape, a discharge pipe 5 is provided at the bottom of the lower hopper 4, the discharge pipe 5 is a circular tube, a discharge channel 6 is provided on the side of the lower end of the discharge pipe 5, the discharge channel 6 is inclined, a lifting seat 20 is provided for sliding in the discharge pipe 5, a spiral blade 21 is provided on the top of the lifting seat 20, a support plate 14 is provided on the side of the lower end of the support rod 19, a hydraulic rod 11 is provided on the top of the support plate 14, a second motor 10 is fixed to the telescopic end of the hydraulic rod 11, and the output shaft of the second motor 10 is connected to the second rotating shaft 22, and the second rotating shaft 22 is connected to the bottom of the lifting seat 20.

[0024] When the material discharging anti-blocking device is working, first put the concrete raw material into the mixing drum 3, start the first motor 2, the first motor 2 rotates to drive the first rotating shaft 16 to rotate, the first rotating shaft 16 rotates to drive the stirring rod 17 to rotate, and the stirring rod 17 continuously stirs the concrete raw materials. When the concrete is uniformly mixed, the valve 18 at the bottom of the mixing drum 3 is opened, and the concrete flows into the lower hopper 4 below from the valve 18. At this time, the lifting seat 20 is located in the discharge pipe 5 at the bottom of the lower hopper 4, and the top surface of the lifting seat 20 is flush with the top of the discharge pipe 5. Start the second motor 10, the second motor 10 rotates to drive the second rotating shaft 22 to rotate, and the rotation of the second rotating shaft 22 drives the lifting seat 20 to rotate. The rotation of the lifting seat 20 drives the spiral blade 21 to rotate. The rotation of the spiral blade 21 continuously pushes the concrete at the bottom of the lower hopper 4 from the bottom upward, so that the concrete in the lower hopper 4 is in a flowing state. When unloading is required, hydraulic rod 11 is activated. The telescopic end of hydraulic rod 11 shortens, driving second shaft 22 downward. This lowering of second shaft 22 also lowers lifting base 20. When the top surface of lifting base 20 is flush with the bottom of discharge channel 6, hydraulic rod 11 is stopped. Then, second motor 10 is reversed. This rotation of second motor 10 drives second shaft 22, which in turn drives lifting base 20. This rotation of lifting base 20 drives spiral blade 21 in the opposite direction, continuously pushing concrete from top to bottom, increasing the unloading speed of concrete, and concrete flows out of side discharge channel 6. By adjusting the rotation speed of spiral blade 21, the unloading speed can be automatically adjusted according to actual conditions, speeding up or slowing down the discharge speed to adapt to different usage conditions. When unloading is complete, second motor 10 is stopped and reversed. Then, hydraulic rod 11 is activated. The telescopic end of hydraulic rod 11 extends, driving second shaft 22 upward. This raising second shaft 22 raises lifting base 20 and resets it.

[0025] Preferably, an annular receiving groove 25 is provided on the side of the lifting seat 20, a slip ring 26 is provided in the annular receiving groove 25, the slip ring 26 has an opening, a spring 27 is provided in the middle of the opening, and both ends of the spring 27 are respectively connected to the side of the opening.

[0026] The spring 27 is in a compressed state, and the spring 27 generates elastic force on both sides of the opening, so that the side of the slip ring 26 remains in contact with the inner wall of the discharge pipe 5, preventing concrete leakage when the lifting seat 20 slides in the discharge pipe 5, and improving the sealing performance.

[0027] Preferably, a cleaning mechanism is also included, which includes a connecting arm 23, bristles 7, a disc 9, a water outlet nozzle 8, a water pipe 12 and a water pump 13. A plurality of connecting arms 23 are provided on the side of the second rotating shaft 22, and bristles 7 are provided at the end of the connecting arm 23. A disc 9 is provided on the top surface of the second motor 10, and a cavity 24 is provided in the disc 9. The plurality of water outlet nozzles 8 are arranged on the side of the disc 9, and the water outlet nozzle 8 is connected to the cavity 24. The water pump 13 is connected to the cavity 24 through the water pipe 12, and the water pump 13 is provided on the top surface of the support plate 14.

[0028] When unloading is completed, stop and reverse the second motor 10, then start the hydraulic rod 11, the telescopic end of the hydraulic rod 11 extends to drive the second rotating shaft 22 to rise, and the rising second rotating shaft 22 drives the lifting seat 20 to rise, and at the same time start the water pump 13, the water pump 13 pumps clean water 13 into the cavity 24 of the disc 9 and sprays it out through the water outlet nozzle 8 on the side of the disc 9. As the lifting seat 20 continues to rise, the second rotating shaft 22 drives the connecting arm 23 to rotate, and the bristles 7 at the end of the connecting arm 23 continuously brush the inner wall of the discharge pipe 5. The water flow sprayed from the water outlet pipe 12 further cleans the dirt on the inner wall of the discharge pipe 5 to prevent concrete from adhering to the inner wall of the discharge pipe 5, so that the lifting seat 20 slides up and down smoothly.

[0029] Preferably, the feeding hopper 1 is further included. The feeding hopper 1 is arranged on the top of the mixing drum 3. The bottom of the feeding hopper 1 is connected to the mixing drum 3. The opening of the feeding hopper 1 faces upward, and an inclined portion 15 is provided at the bottom.

[0030] The raw materials for making concrete are placed in the feed hopper 1. The bottom of the feed hopper 1 is provided with an inclined portion 15. After the raw materials fall into the inclined portion 15, they automatically slide to the bottom under the action of gravity to prevent the concrete raw materials from remaining.

[0031] Preferably, the water pipe 12 is a flexible polypropylene bellows telescopic pipe.

[0032] When the material unloading anti-blocking device is working, the lifting seat 20 needs to be continuously raised and lowered, so that the water pipe 12 is continuously pulled up and lowered. The water pipe 12 adopts a flexible polypropylene corrugated tube telescopic tube to avoid the bending of the water pipe 12, which causes the inner diameter of the water pipe 12 to be reduced and the water output to be reduced.

[0033] Preferably, the spiral blade 21 has a cone-shaped structure as a whole.

[0034] The overall tapered structure of the spiral blade 21 increases its thrust while minimizing any obstruction to the concrete. When the top surface of the lifting base 20 is flush with the discharge channel 6, a gap exists between the spiral blade 21 and the discharge pipe 5. The spiral blade 21 does not need to rotate, and concrete flows through the gap under the influence of gravity, resulting in normal discharge. Therefore, even if the second motor 10 malfunctions, material discharge is not affected, improving the reliability of the discharge device.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A concrete mixing station unloading anti-blocking device, characterized in that: The cam is connected to the mixing drum by a first rotating shaft, and the second rotating shaft is connected to the mixing drum by a first motor. The cam is connected to the mixing drum by a first rotating shaft, and the second rotating shaft is connected to the mixing drum by a first motor. The cam is connected to the mixing drum by a first rotating shaft, and the mixing drum is connected to the mixing drum by a first rotating shaft. The mixing drum is connected to the mixing drum by a first rotating shaft, and the mixing drum is connected to the mixing drum by a first rotating shaft. The mixing drum is connected to the mixing drum by a first rotating shaft, and the mixing drum is connected to the mixing drum by a first rotating shaft. The mixing drum is connected to the mixing drum by a first rotating shaft, and the mixing drum is connected to the mixing drum by a first rotating shaft. The mixing drum is connected to the mixing drum by a first rotating shaft, and the mixing drum is connected to the mixing drum by a first rotating shaft. The mixing drum is connected to the mixing drum by a first rotating shaft, and the mixing drum is connected to the mixing drum by a first rotating shaft. The mixing drum is connected to the mixing drum by a first rotating shaft, and the mixing drum is connected to the mixing drum by a first rotating shaft. The mixing drum is connected to the mixing drum by a first rotating shaft, and the mixing drum is connected to the mixing drum by a first rotating shaft.

2. A concrete mixing station unloading anti-blocking device according to claim 1, characterized in that: An annular receiving groove, a slip ring and a spring are provided on the side of the lifting seat. The slip ring is provided in the receiving groove. The slip ring is provided with an opening. A spring is provided in the middle of the opening. Both ends of the spring are respectively connected to the side of the opening.

3. A concrete mixing station unloading anti-blocking device according to claim 1, characterized in that: It also includes a cleaning mechanism, which includes a connecting arm, bristles, a disc, a water outlet nozzle, a water pipe and a water pump. A plurality of connecting arms are provided on the side of the second rotating shaft, and bristles are provided on the end of the connecting arm. A disc is provided on the top surface of the second motor, and a cavity is provided in the disc. The plurality of water outlet nozzles are arranged on the side of the disc, and the water outlet nozzle is connected to the cavity. The water pump is connected to the cavity through a water pipe, and the water pump is provided on the top surface of the support plate.

4. The device for preventing material from being blocked during unloading of a concrete mixing station according to claim 1, characterized in that: The mixing drum further comprises a feed hopper, which is arranged on the top of the mixing drum. The bottom of the feed hopper is communicated with the mixing drum. The opening of the feed hopper faces upward, and an inclined portion is arranged on the bottom of the feed hopper.

5. The concrete mixing station unloading anti-blocking device according to claim 3, characterized in that: The water pipe adopts a flexible polypropylene bellows telescopic pipe.

6. The concrete mixing station unloading anti-blocking device according to claim 1, characterized in that: The spiral blade is in a cone-shaped structure as a whole.

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