A powder material metering and loading device

Abstract

The present invention discloses a powder material metering and loading device, comprising a powder material bin; the powder outlet of the powder material bin is sequentially connected with a discharge device, a weighing bin and a discharge device, and a control unit; a load sensor and a feeder are arranged at the discharge port at the bottom of the weighing bin; the discharge device comprises a discharge hose connected with the discharge port, and the discharge hose is connected with an exhaust pipe; a gas flow meter is arranged on the exhaust pipe; the control unit is electrically connected with the discharge device, the load sensor, the feeder, and the gas flow meter respectively. The present invention is used for metering the loading of powder materials, by measuring the volume of the powder material and then converting it into the weight of the powder, which is not only convenient for metering, but also has no dust pollution during the loading process, realizes automatic metering and loading, and improves the loading efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of chemical metering, and in particular to a metering and loading device for powder materials. Background Art

[0002] At present, in the chemical industry, the packaging or loading of powder materials usually adopts the method of separate loading and metering. Due to the lack of appropriate metering means, it is difficult to accurately control the weight of the loading during bulk loading, and it is necessary to transport back and forth many times. The repeated loading and unloading of a single vehicle is very serious, which seriously affects the efficiency of loading. In addition, the repeated loading and unloading process causes serious dust pollution on site, which also causes waste of resources. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the shortcomings of the prior art, a powder material metering and loading device is provided, which converts the volume of the measured powder material into the powder weight, which is not only convenient for metering, but also has no dust pollution during the loading process, realizes automatic metering and loading, and improves the loading efficiency.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] A powder material metering and loading device, comprising a powder material bin;

[0006] The powder outlet of the powder material bin is sequentially connected to a discharge device, a weighing bin, a discharge device, and a control unit;

[0007] A load sensor and a feeder are provided at the discharge port at the bottom of the weighing bin;

[0008] The unloading device comprises a unloading hose connected to the discharge port, the unloading hose is connected to an exhaust pipe; the exhaust pipe is provided with a gas flow meter;

[0009] The control unit is electrically connected to the discharge device, the load sensor, the feeder, and the gas flow meter respectively;

[0010] The control unit is used to control the pneumatic discharging device to start discharging, and control the feeder to unload after the value of the load sensor reaches the set value; and control the discharging device and the feeder to close feeding and unloading after the flow of the gas flow meter reaches the set value.

[0011] As an improved technical solution, the discharge device includes an air conveying chute connected to the powder outlet, and a pneumatic solenoid valve and a dust collector are sequentially arranged on the air conveying chute.

[0012] As a preferred technical solution, the dust collector is a bag dust collector or an electrostatic dust collector.

[0013] As an improved technical solution, a manual valve is also provided on the pneumatic solenoid valve.

[0014] As a preferred technical solution, the feeder is a cylinder valve, a gravity flap valve, a spiral feeder or a spiral auger.

[0015] As an improved technical solution, the unloading device also includes a sealed bulk head arranged at the free end of the unloading hose.

[0016] As a further improved technical solution, the sealed bulk loading head includes a telescopic hose and an inverted cone-shaped discharge port.

[0017] As an improved technical solution, a filter is provided on the exhaust pipe at the upstream section of the gas flow meter.

[0018] As an improved technical solution, the air conveying chute and the weighing bin are softly connected.

[0019] As a preferred technical solution, the pneumatic solenoid valve is an IBAU valve.

[0020] Due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] The powder material metering and loading device of the present invention comprises a powder material bin; the powder outlet of the powder material bin is connected to a discharge device, a weighing bin and a discharge device, and a control unit in sequence; a load sensor and a feeder are arranged at the discharge port at the bottom of the weighing bin; the discharge device comprises a discharge hose connected to the discharge port, and the discharge hose is connected to an exhaust pipe; a gas flow meter is arranged on the exhaust pipe; the control unit is electrically connected to the pneumatic solenoid valve of the discharge device, the load sensor, the feeder and the gas flow meter respectively. When loading a vehicle, the control unit first controls the pneumatic solenoid valve or electric actuator to start feeding, and after the value of the load sensor reaches a set value, controls the feeder to start unloading; after the powder material enters the container (tank truck), the gas is discharged and flows through the gas flow meter, and the volume value converted from the density of the loaded powder and the loading weight is input into the control unit as a set value, and after the flow of the gas flow meter reaches the set value, controls the pneumatic solenoid valve or electric actuator and the feeder to close feeding and unloading, thereby completing loading.

[0022] The present invention uses a gas flow meter to detect the volume of gas discharged from the tank truck, so as to calculate the volume of powder material that has entered the tank, and then according to the density of the powder material, the weight of the powder loaded in the tank truck can be calculated. The control unit continuously reads the gas flow meter data, and when the volume setting value required for this loading is reached, the pneumatic solenoid valve and the feeder are controlled to close the feeding and unloading, thus ending this loading. The present invention can not only accurately measure the powder material to be loaded, avoiding the problem of difficulty in accurately measuring the loading weight in the prior art, but also avoiding the situation of multiple back and forth transportation and repeated loading and unloading of a single vehicle, greatly improving the loading efficiency, and the system is sealed during the loading process, there is no dust pollution, and the problem of raw material waste is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0025] In the figure, 1. Powder material bin; 2. Air conveying chute; 3. Pneumatic solenoid valve; 4. Dust collector; 5. Weighing bin; 6. Load sensor; 7. Feeder; 8. Discharge hose; 9. Exhaust pipe; 10. Gas flow meter; 11. Filter; 12. Telescopic hose; 13. Inverted cone-shaped discharge port; 14. Control unit; 15. Tank truck. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with the accompanying drawings and Examples. It should be understood that these embodiments are only intended to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0027] As attached Figure 1 As shown, the powder material metering and loading device of the present invention comprises a powder material bin 1; the powder outlet of the powder material bin 1 is connected to an air conveying chute 2, and the air conveying chute 2 is sequentially provided with a pneumatic solenoid valve 3 and a dust collector 4; the tail end of the air conveying chute 2 is connected to a weighing bin 5, and a load sensor 6 and a feeder 7 are provided at the discharge port at the bottom of the weighing bin 5; the unloading device comprises a unloading hose 8 connected to the discharge port, and the unloading hose 8 is connected to an exhaust pipe 9; a gas flow meter 10 is provided on the exhaust pipe 9; a filter screen 11 is provided at the upstream section of the gas flow meter 10; the free end of the unloading hose 8 is connected to a sealed bulk head, and the sealed bulk head comprises a telescopic joint hose 12 and an inverted cone-shaped discharge port 13.

[0028] The control unit 14 is electrically connected to the pneumatic solenoid valve 3 , the load sensor 6 , the feeder 7 , and the gas flow meter 10 , respectively.

[0029] When loading the vehicle, the control unit 14 first controls the pneumatic solenoid valve 3 to open, unload the material from the powder material bin 1, and feed the material to the weighing bin 5 through the air conveying chute 2. After the value of the weight signal received by the load sensor 6 reaches the set value (this set value is to control the weighing bin to maintain a certain amount of material level to prevent the gas discharged from the tanker from affecting the measurement accuracy due to the empty bin 5), the feeder 7 is controlled to start unloading; the powder material enters the tanker 1 through the unloading hose 8, the telescopic hose 12 and the inverted cone-shaped discharge port 13. 5, the gas in the tank truck 15 is discharged, and the discharged gas flows through the gas flow meter 10. The dust brought out by the gas is filtered by the filter 11 before flowing through the gas flow meter 10. During the loading process, the gas flow meter 10 continuously transmits the collected volume signal to the control unit 14, and the volume value converted from the density of the loaded powder and the loading weight is input into the control unit 14 as the set value in advance. After the flow of the gas flow meter 10 reaches the set value, the control unit 14 controls the pneumatic solenoid valve 3 and the feeder 7 to close the feeding and unloading, and the loading is completed.

[0030] As a preferred implementation, the control unit may be a PLC, a single chip microcomputer, etc.

[0031] As a preferred embodiment, the dust collector 4 is a bag dust collector or an electrostatic dust collector.

[0032] As a preferred implementation, the pneumatic solenoid valve 3 is also provided with a manual valve.

[0033] As a preferred embodiment, the feeder 7 is a cylinder valve, a gravity flap valve, a screw feeder or a screw auger.

[0034] As a preferred embodiment, the air conveying chute 2 and the weighing bin 5 are softly connected, and the soft connection further eliminates mechanical vibration.

[0035] As a preferred implementation, the pneumatic solenoid valve is an IBAU valve.

Claims

1. A powder material metering and loading device, characterized in that: Including powder material silo; The powder outlet of the powder material bin is sequentially connected to a discharge device, a weighing bin, a discharge device, and a control unit; A load sensor and a feeder are provided at the discharge port at the bottom of the weighing bin; The unloading device comprises a unloading hose connected to the discharge port, the unloading hose is connected to an exhaust pipe; the exhaust pipe is provided with a gas flow meter; The control unit is electrically connected to the discharge device, the load sensor, the feeder, and the gas flow meter respectively; The control unit is used to control the discharge device to start discharging, and control the feeder to unload after the value of the load sensor reaches a set value; and control the discharge device and the feeder to close feeding and unloading after the flow of the gas flow meter reaches a set value.

2. The powder material metering and loading device according to claim 1, characterized in that: The discharge device comprises an air conveying chute connected to the powder outlet, and a pneumatic solenoid valve and a dust collector are sequentially arranged on the air conveying chute.

3. The powder material metering and loading device according to claim 2, characterized in that: The dust collector is a bag dust collector or an electrostatic dust collector.

4. The powder material metering and loading device according to claim 2, characterized in that: The pneumatic solenoid valve is also provided with a manual valve.

5. The powder material metering and loading device according to claim 1, characterized in that: The feeder is a cylinder valve, a gravity flap valve, a spiral feeder or a spiral auger.

6. The powder material metering and loading device according to claim 1, characterized in that: The discharge device also includes a sealed bulk head arranged at the free end of the discharge hose.

7. The powder material metering and loading device according to claim 6, characterized in that: The sealed bulk loading head comprises a telescopic hose and an inverted frustum-shaped discharge port.

8. The powder material metering and loading device according to claim 1, characterized in that: A filter is provided on the exhaust pipe at the upstream section of the gas flow meter.

9. The powder material metering and loading device according to claim 2, characterized in that: The air conveying chute and the weighing bin are softly connected.

10. The powder material metering and loading device according to claim 2, characterized in that: The pneumatic solenoid valve is an IBAU valve.

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