Suction conveying type pneumatic conveying system

Abstract

The utility model relates to the technical field of grain storage, and discloses a suction type pneumatic conveying system which comprises a pneumatic conveyor, a material suction pipeline and a material conveying pipeline, the material suction pipeline and the material conveying pipeline are connected with the pneumatic conveyor, the pneumatic conveyor comprises a high-pressure fan, and the material suction pipeline and / or the material conveying pipeline are / is provided with sensors. The utility model has the following advantages and effects: sufficient air pressure and gas flow are provided through the high-pressure fan, long-distance material conveying is realized, the flow in the pipeline is measured through the sensor, the air pressure and the gas flow are accurately provided according to the measurement result, the conveying operation and low energy consumption are considered, intelligent control is realized, and the working efficiency is improved. The energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain storage, in particular to a suction-type pneumatic conveying system. Background Art

[0002] Pneumatic conveying, also known as airflow conveying, utilizes the energy of airflow to move granular materials along the airflow path within a closed pipeline. Pneumatic conveying offers numerous advantages, including simple equipment construction, a small footprint, and ease of automation. It can simultaneously perform multiple process operations, such as mixing, crushing, grading, drying, and cooling. Furthermore, its excellent sealing properties effectively minimize material leakage and contamination.

[0003] Suction-type pneumatic conveying system is a common type of pneumatic conveying system and has been widely used in grain storage and transportation. In the suction-type pneumatic conveying system, the air source equipment is usually at the end of the system. By pumping air, a negative pressure is formed in the pipeline. The material is sucked into the conveying pipeline under the action of atmospheric pressure and transported to the designated location along with the air flow. For example, the Chinese invention patent with the authorization announcement number CN109592418B discloses a suction-type pneumatic conveying device, which includes a storage cylinder, a conveying pipe, an air pipe, a fan and a separation cylinder. The top of the storage cylinder is embedded with a separation cylinder, one side of the separation cylinder is embedded with a conveying pipe, the other side of the conveying pipe is embedded with an air pipe, one end of the air pipe is embedded with the fan, the bottom of the storage cylinder is embedded with a discharge pipe, the bottom of the discharge pipe is threaded with a threaded cover, one side of the conveying pipe is welded to the storage cylinder through a support rod, the top of the separation cylinder is welded with a carrier plate, and the top of the carrier plate is welded with an electric motor.

[0004] In these suction-type pneumatic conveying systems, the fan consumes considerable energy to generate sufficient negative pressure within the pipeline to suck and convey the material. Furthermore, as the pipeline length and internal resistance increase during the material conveying process, the fan's energy consumption further increases. The fan must be sufficiently powerful to maintain normal operation, resulting in higher energy costs. Utility Model Content

[0005] The utility model aims to provide a suction-type pneumatic conveying system with the effects of low energy consumption, energy saving and environmental protection.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: a suction-type pneumatic conveying system, including a pneumatic conveyor, a material suction pipe and a material conveying pipe connected to the pneumatic conveyor, the pneumatic conveyor includes a high-pressure fan, and the material suction pipe and / or the material conveying pipe are installed with sensors.

[0007] By adopting the above technical solution, the fan in the pneumatic conveyor is a high-pressure fan. High-pressure fans generate high wind pressure and provide a large air flow, providing sufficient power for conveying. Sensors can be installed in the material intake and conveying pipelines as needed to measure the material flow within the pipelines. When the material flow within the pipeline is too high, the air flow provided by the high-pressure fan can be reduced. When the material flow within the pipeline is too low, the air flow provided by the high-pressure fan can be increased. This not only provides the power required for the operation, but also avoids excessive energy consumption of the high-pressure fan, achieving precise control and low energy consumption.

[0008] The present invention is further configured as follows: the sensor is used to measure pipeline flow.

[0009] The present invention is further configured to include a control unit, wherein the high-pressure blower and the sensor are both communicatively connected to the control unit.

[0010] By adopting the above technical solution, the control unit controls the operating power of the high-pressure blower according to the signal sent by the sensor.

[0011] The present invention is further configured as follows: it also includes a discharger, the material conveying pipeline is communicated with the interior of the discharger, the upper end of the discharger is connected to an air outlet, and the lower end of the discharger is provided with a material outlet.

[0012] By adopting the above technical solution, the material-gas mixture conveyed by the material conveying pipeline enters the interior of the discharger, the gas is discharged from the air outlet, and the material is discharged from the material outlet.

[0013] The utility model is further configured as follows: the lower end of the discharger is connected to a telescopic hose, the upper end of the telescopic hose is communicated with the interior of the discharger, the lower end of the telescopic hose is a material outlet, an adjusting cylinder is hinged on the discharger, a piston is installed in the adjusting cylinder, a piston rod is fixed to the piston, the lower end of the piston rod extends downward from the adjusting cylinder and is hinged to the telescopic hose, the upper end of the discharger is connected to an exhaust pipe, the exhaust pipe is installed with a filter and a three-way control valve, the three-way control valve is connected to air pipe one and air pipe two, the pipe mouth of air pipe one is the air outlet, the air pipe two is communicated with the interior of the adjusting cylinder, an air relief valve is installed on the adjusting cylinder, and the three-way control valve and the air relief valve are both connected to the control unit.

[0014] By adopting the above technical solution, the present invention designs a telescopic hose with an adjustable lower end. This serves the following purpose: At the beginning of material discharge, the material outlet is positioned close to the inner wall of the receiving container, preventing material splashing and contamination. As the material pile formed after discharge continues to rise, the material outlet at the lower end of the telescopic hose also rises, preventing blockage that could affect material discharge.

[0015] The regulating cylinder regulates the rise and fall of the material outlet at the lower end of the telescopic hose. The three-way control valve controls whether the exhausted air enters the regulating cylinder through air pipe one or is discharged into the atmosphere through air pipe two. The air relief valve and the three-way control valve work together to control the air pressure within the regulating cylinder, thereby controlling the position of the piston and piston rod. This utility model uniquely utilizes high-pressure exhaust gas to adjust the position of the regulating cylinder piston rod, eliminating the need for additional energy consumption.

[0016] The utility model does not use an electric push rod. First, its manufacturing and purchasing costs are high. Second, dust is inevitably generated during the conveying of granular materials, which affects the reliability of the electric push rod. Third, its structure is complex and the maintenance cost is high.

[0017] The utility model is further configured as follows: a spring is installed inside the regulating cylinder, the upper end of the spring is fixed to the inner wall of the regulating cylinder, and the lower end of the spring is fixed to the piston.

[0018] By adopting the above technical solution, the function of the spring is that when the air pressure in the regulating cylinder fails, its elastic force drives the piston and the upper end of the telescopic hose to remain in a higher position, serving as a safety measure and also driving the piston to reset.

[0019] The present invention is further configured as follows: the regulating cylinders are multiple in number and are vertically arranged.

[0020] The utility model is further configured as follows: the material suction pipe is equipped with a suction nozzle.

[0021] The beneficial effects of the present invention are as follows: the present invention provides sufficient wind pressure and gas flow through the high-pressure fan to realize material transportation over a longer distance, and measures the flow in the pipeline by configuring a sensor, and accurately provides wind pressure and gas flow according to the measurement results, taking into account both transportation operations and low energy consumption, realizing intelligent control, energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a structural diagram of the present utility model.

[0024] Figure 2 yes Figure 1 Enlarged view of point A.

[0025] Figure 3 It is a schematic diagram of the internal structure of the regulating cylinder of the present utility model.

[0026] In the figure, 1. suction nozzle; 2. material suction pipe; 3. pneumatic conveyor; 31. high-pressure fan; 4. material conveying pipe; 5. discharger; 51. exhaust pipe; 52. three-way control valve; 521. air pipe 1; 522. air pipe 2; 53. air outlet; 54. telescopic hose; 55. regulating cylinder; 551. piston; 552. piston rod; 553. air relief valve; 554. spring; 56. filter. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0028] A suction-type pneumatic conveying system, such as Figures 1 to 3 As shown, the device comprises a suction nozzle 1, a material intake pipe 2, a pneumatic conveyor 3, a material conveying pipe, and a discharger 5, which are connected in sequence. Both the material intake pipe 2 and the material conveying pipe 4 are equipped with sensors for measuring the pipe flow rate. The fan in the pneumatic conveyor 3 is a high-pressure fan 31.

[0029] The interior of the discharger 5 is connected to the material conveying pipeline. An exhaust pipe 51 is connected to the upper end of the discharger 5. This exhaust pipe 51 is equipped with a filter 56 and a three-way control valve 52. The three-way control valve 52 is connected to air pipe 1 521 and air pipe 2 522. The opening of air pipe 1 521 serves as the air outlet 53. A telescopic hose 54 is connected to the lower end of the discharger 5. The upper end of this telescopic hose 54 communicates with the interior of the discharger 5, and the lower end serves as the material outlet. Multiple vertically arranged adjustment cylinders 55 are hingedly connected to the discharger 5. Air pipe 2 522 communicates with the interior of these adjustment cylinders 55. A piston 551 is mounted within the adjustment cylinder 55. A piston rod 551 is fixed to the piston 551. The lower end of the piston rod extends downward from the adjustment cylinder 55 and is hingedly connected to the telescopic hose 54. An air release valve 553 is installed on the regulating cylinder 55 , and a spring 554 is installed inside the regulating cylinder 55 . The upper end of the spring 554 is fixed to the inner wall of the regulating cylinder 55 , and the lower end is fixed to the piston 551 .

[0030] The suction-type pneumatic conveying system includes a control unit, and the high-pressure blower 31 , the sensor, the three-way control valve 52 , and the air release valve 553 are all communicatively connected to the control unit.

[0031] Working principle: The pneumatic conveyor 3 is running, and the high-pressure fan 31 inside it is working, sucking the material through the suction nozzle 1 and the material suction pipe 2, and conveying the material to the discharger 5 through the material conveying pipe 4. The material in the discharger 5 falls from the material outlet and accumulates at the required position. The gas is filtered and discharged from the gas outlet.

Claims

1. A suction-type pneumatic conveying system, characterized in that: The invention comprises a pneumatic conveyor (3), a material suction pipe (2) and a material conveying pipe (4) connected to the pneumatic conveyor (3); the pneumatic conveyor (3) comprises a high-pressure blower (31); and the material suction pipe (2) and / or the material conveying pipe (4) are equipped with sensors.

2. A suction-type pneumatic conveying system according to claim 1, characterized in that: The sensor is used to measure pipeline flow.

3. A suction-type pneumatic conveying system according to claim 1 or 2, characterized in that: It comprises a control unit, and the high-pressure blower (31) and the sensor are both communicatively connected to the control unit.

4. A suction-type pneumatic conveying system according to claim 3, characterized in that: It also includes a discharger (5), the material conveying pipeline (4) is connected to the inside of the discharger (5), the upper end of the discharger (5) is connected to an air outlet (53), and the lower end of the discharger (5) is provided with a material outlet.

5. A suction-type pneumatic conveying system according to claim 4, characterized in that: The lower end of the discharger (5) is connected to a telescopic hose (54), the upper end of the telescopic hose (54) is connected to the inside of the discharger (5), the lower end of the telescopic hose (54) is a material outlet, the discharger (5) is hinged with an adjusting cylinder (55), a piston (551) is installed in the adjusting cylinder (55), a piston (551) rod is fixed to the piston (551), the lower end of the piston (551) rod extends downward from the adjusting cylinder (55) and is hinged to the telescopic hose (54), the discharger (5) is hinged with an adjusting cylinder (55), and the adjusting cylinder (55) is hinged with the adjusting cylinder (55). The end is connected to an exhaust pipe (51), the exhaust pipe (51) is installed with a filter (56) and a three-way control valve (52), the three-way control valve (52) is connected to an air pipe 1 (521) and an air pipe 2 (522), the pipe mouth of the air pipe 1 (521) is the air outlet (53), the air pipe 2 (522) is connected to the inside of the regulating cylinder (55), the regulating cylinder (55) is installed with an air release valve (553), and the three-way control valve (52) and the air release valve (553) are both connected to the control unit.

6. A suction-type pneumatic conveying system according to claim 5, characterized in that: A spring (554) is installed inside the regulating cylinder (55), the upper end of the spring (554) is fixed to the inner wall of the regulating cylinder (55), and the lower end is fixed to the piston (551).

7. A suction-type pneumatic conveying system according to claim 6, characterized in that: The regulating cylinders (55) are multiple in number and are vertically arranged.

8. The suction-type pneumatic conveying system according to claim 1, characterized in that: The material suction pipe (2) is equipped with a suction nozzle (1).

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