Anti-blocking device for coal receiving hopper
By using gas storage tanks and pneumatic systems in the coal-receiving funnel to purge the funnel caused by high moisture content and high viscosity of the raw coal, the funnel blockage problem is solved, and the loading flow is stable and normal production is achieved.
Patent Information
- Application Number
- CN202421551080.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-03
AI Technical Summary
When the raw coal has high moisture content and high viscosity, there is a sticky material on the top and bottom of the funnel, and no discharge of materials will occur respectively, resulting in a reduction in the operating efficiency of the coal-up operation, and the vibration motor amplitude is frequently adjusted to maintain production, which damages the motor life and disrupts the production rhythm.
Design a coal-infuser anti-blocking device, and use a gas storage tank and a pneumatic system to purify the coal in the funnel by compressing air to make it fluffy and fall on the belt machine to ensure the stability of the feeding flow.
The problem of coal adhesion is effectively avoided through purge technology, ensuring the satisfaction of feeding flow, ensuring normal production, and reducing frequent adjustments to vibrating motors, extending the motor life.
Smart Images
Figure CN222934451U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an anti-blocking device for a coal receiving hopper, belonging to the technical field of coal material conveying. Background Art
[0002] With the increasing environmental protection requirements year by year, atomized dust suppression transportation methods are adopted during the loading and unloading of raw materials in the raw material yard. While effectively suppressing dust, it also causes serious over-standard moisture in the raw materials. The coal feeding operation efficiency is greatly affected by the moisture of raw coal. When encountering raw materials with high moisture and high viscosity, sticky materials appear at the top and bottom of the hopper respectively, and no material is discharged. Only by increasing the amplitude of the vibration motor at the bottom of the hopper, this single means is used to maintain production. Frequent adjustment is likely to cause the reduction of the motor life and disrupt the production rhythm. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide an anti-blocking device for a coal receiving hopper according to the above-mentioned prior art, so that the compressed air blows off the coal material sticking to the bottom of the hopper, avoiding affecting the feeding flow rate and ensuring normal production.
[0004] The technical solution adopted by the utility model to solve the above problems is as follows: an anti-blocking device for a coal receiving hopper, a grille is provided at the feeding port of the coal receiving hopper, a belt conveyor is provided below the coal receiving hopper, the discharging port of the coal receiving hopper faces the belt conveyor, a vibrating feeder is arranged at the discharging port of the coal receiving hopper, the anti-blocking device includes an air storage tank, the air inlet of the air storage tank is connected to an air inlet pipe, a manual ball valve is arranged on the air inlet pipe, and by opening the manual ball valve, the compressed air is collected in the air storage tank through the air inlet pipe; the air outlet of the air storage tank is connected to the bottom of the coal receiving hopper through an air outlet pipe, and a pneumatic ball valve is arranged on the air outlet pipe; a weighing belt scale is arranged on the belt conveyor, and the weighing belt scale is in signal connection with the pneumatic ball valve; by opening the pneumatic ball valve, the compressed air in the air storage tank enters the coal receiving hopper through the air outlet pipe, and the raw materials in the coal receiving hopper are purged to make them fluffy.
[0005] A pulse valve is arranged at the connection between the coal receiving hopper and the air outlet pipe, and the pulse valve is in signal connection with the weighing belt scale.
[0006] A pneumatic regulating valve is arranged on the air outlet pipe, the pneumatic regulating valve is arranged on the outlet side of the pneumatic ball valve, and the pneumatic regulating valve is in signal connection with the weighing belt scale.
[0007] A check valve is arranged on the air inlet pipe.
[0008] Compared with the prior art, the advantages of the utility model are as follows: an anti-blocking device for a coal receiving hopper, with a simple structure and convenient operation. The compressed air blows the coal material at the bottom of the coal receiving hopper to be fluffy and then falls onto the belt conveyor, so that the feeding flow rate meets the production requirements and normal production is ensured. Description of the Drawings
[0009] Figure 1 Schematic diagram of a coal receiving hopper anti-blocking device according to an embodiment of the present invention;
[0010] In the figure, 1 is a manual ball valve, 2 is a check valve, 3 is an inlet pipe, 4 is an air storage tank, 5 is a pneumatic ball valve, 6 is a pneumatic regulating valve, 7 is an outlet pipe, 8 is a pulse valve, 9 is a grille, 10 is a coal receiving hopper, 11 is a vibrating feeder, 12 is a weighing belt scale, and 13 is a belt conveyor. Specific embodiments
[0011] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0012] As Figure 1 shown, in an anti-blocking device for a coal receiving hopper in this embodiment, a grille 9 is provided at the feed inlet of the coal receiving hopper 10, a belt conveyor 13 is provided below the coal receiving hopper 10, the discharge outlet of the coal receiving hopper 10 faces the belt conveyor 13, and a vibrating feeder 11 is arranged at the discharge outlet of the coal receiving hopper 10. The anti-blocking device includes an air storage tank 4. The air inlet of the air storage tank 4 is connected to the inlet pipe 3, and a manual ball valve 1 is provided on the inlet pipe 3. Manually open the manual ball valve 1 so that compressed air is collected in the air storage tank 4 through the inlet pipe 3. The air outlet of the air storage tank 4 is connected to the bottom of the coal receiving hopper 10 through an outlet pipe 7, and a pneumatic ball valve 5 is provided on the outlet pipe 7. A weighing belt scale 12 is arranged on the belt conveyor 13, and the weighing belt scale 12 is signal-connected to the pneumatic ball valve 5. The weighing belt scale 12 weighs the raw materials on the belt conveyor 13 and feeds the data back to the PLC controller. Turn on the vibrating feeder 11, and the raw coal falls into the coal receiving hopper 10 through the grille 9 and then onto the belt conveyor 13. The weighing belt scale 12 weighs the raw coal on the belt conveyor 13. When the feeding flow rate does not meet the requirements, the PLC controller opens the pneumatic ball valve 5 so that the compressed air in the air storage tank 4 enters the coal receiving hopper 10 through the outlet pipe 7 to blow the raw materials in the coal receiving hopper 10, making the raw coal fluffy and increasing the feeding flow rate.
[0013] A pulse valve 8 is provided at the connection between the coal receiving hopper 10 and the outlet pipe 7; a pneumatic regulating valve 6 is provided on the outlet pipe 7, and the pneumatic regulating valve 6 is arranged on the outlet side of the pneumatic ball valve 5. The pulse valve 8 and the pneumatic regulating valve 6 are signal-connected to the weighing belt scale 12. In the initial state, the pulse valve 8 and the pneumatic regulating valve 6 are in the closed state. When the feeding flow rate does not meet the requirements, the pulse valve 8 and the pneumatic regulating valve 6 are opened, and the flow rate of the compressed air is adjusted through the pneumatic regulating valve.
[0014] A check valve 2 is provided on the inlet pipe 3 to prevent the compressed air in the air storage tank 4 from flowing back.
[0015] Put the raw coal on the grille through the feeding overhead crane; start the vibrating feeder and the belt conveyor. The vibrating feeder drops the raw coal in the coal receiving hopper onto the belt conveyor through the vibrating motor. The weighing belt scale weighs the raw coal on the belt conveyor and feeds the data back to the PLC controller. Determine whether to start each valve to assist in feeding based on the data fed back by the weighing belt scale: 1. When the feeding flow rate meets the production set requirements, do not start the program. 2. When the feeding flow rate is lower than the set value, the program automatically opens the pneumatic ball valve, the pneumatic regulating valve and the pulse valve. The compressed air in the air storage tank enters the bottom of the coal receiving hopper through the air outlet pipe to make the raw coal fluffy, and the feeding flow rate increases. Adjust the opening of the pneumatic regulating valve through the data fed back by the real-time weighing belt scale to balance the feeding capacity. When the feeding flow rate is higher than a certain value, the pneumatic regulating valve automatically reduces to a certain opening to ensure stable feeding.
[0016] The structure of this application is simple and the operation is convenient. The compressed air blows the coal material at the bottom of the coal receiving hopper to be fluffy and then falls onto the belt conveyor, so that the feeding flow rate meets the production requirements and ensures normal production.
[0017] In addition to the above embodiments, the present utility model also includes other implementation manners. All technical solutions formed by equivalent transformation or equivalent substitution shall fall within the protection scope of the claims of the present utility model.
Claims
1. A device for preventing blocking of a coal receiving hopper, wherein a grid is provided at the feed port of the coal receiving hopper, a belt conveyor is provided below the coal receiving hopper, a discharge port of the coal receiving hopper faces the belt conveyor, and a vibrating feeder is provided at the discharge port of the coal receiving hopper, characterized in that: The anti-blocking device includes an air storage tank, an air inlet of the air storage tank is connected to an air inlet pipe, a manual ball valve is provided on the air inlet pipe, and the manual ball valve is opened to allow compressed air to be collected in the air storage tank through the air inlet pipe; the air outlet of the air storage tank is connected to the bottom of the coal receiving funnel through the air outlet pipe, and a pneumatic ball valve is provided on the air outlet pipe; a metering belt scale is provided on the belt conveyor, and the metering belt scale is connected to the pneumatic ball valve signal; the pneumatic ball valve is opened to allow the compressed air in the air storage tank to enter the coal receiving funnel through the air outlet pipe, and the raw materials in the coal receiving funnel are blown to make it fluffy.
2. The device for preventing coal receiving hopper from blocking according to claim 1, characterized in that: A pulse valve is provided at the connection between the coal receiving funnel and the gas outlet pipe, and the pulse valve is connected to the metering belt scale signal.
3. The device for preventing coal receiving hopper from blocking according to claim 1, characterized in that: The air outlet pipe is provided with a pneumatic regulating valve, the pneumatic regulating valve is arranged on the outlet side of the pneumatic ball valve, and the pneumatic regulating valve is connected with the metering belt scale signal.
4. The device for preventing coal receiving hopper from blocking according to claim 1, characterized in that: A check valve is arranged on the air inlet pipe.