A lead powder pneumatic conveying device

Abstract

The utility model discloses a lead powder pneumatic conveying device belongs to the lead -acid battery production technical field. It mainly solves the problem that the existing conveying device has higher lead powder temperature and the big particle lead skin in lead powder and other impurities cannot be screened out. Its main features are: including auger motor, auger and lifting scraper, the front end of auger is equipped with lead powder discharge gate, the bending pipe and push powder spiral are connected between auger and lifting scraper, the push powder spiral is connected with negative pressure fan and exhaust pipe. The utility model has the characteristics that the big particle lead skin in lead powder and other impurities can be screened out, and the temperature of lead powder is lower than the self -ignition temperature of lead powder, and is mainly used for conveying lead powder pneumatically to lead powder bin.

Description

Technical Field

[0001] This utility model belongs to the field of lead-acid battery production technology, specifically relating to a pneumatic lead powder conveying device for conveying and screening lead powder in the lead powder manufacturing and conveying process. Background Technology

[0002] Existing lead powder conveying method: using a screw conveyor to transport lead powder to a designated lead powder silo.

[0003] Disadvantages: 1. The amount of lead powder conveyed by the auger per unit time is unstable, and the temperature of the lead powder is relatively high. There is a risk of spontaneous combustion after the high-temperature lead powder is conveyed to the lead powder silo; 2. Large particles of lead skin and other impurities in the lead powder cannot be screened out. Utility Model Content

[0004] The purpose of this invention is to provide a pneumatic conveying device for lead powder that addresses the above-mentioned shortcomings. This device can screen out large particles of lead and other impurities from the lead powder and keep the temperature of the lead powder below its auto-ignition temperature.

[0005] The technical solution of this utility model is: a lead powder pneumatic conveying device, including an auger motor, an auger and a lifting scraper, wherein the front end of the auger is provided with a lead powder discharge port, characterized in that: a bent pipe and a powder pushing screw are connected between the auger and the lifting scraper; the powder pushing screw is connected to a negative pressure fan and an exhaust pipe.

[0006] In the technical solution of this utility model, the bent pipe is a U-shaped bent pipe with both ends facing downwards; one end of the bent pipe is connected to the rear end of the auger, and the other end is connected to the front end of the powder pushing screw; the lifting scraper is connected to the rear end of the powder pushing screw.

[0007] In the technical solution of this utility model, the rear end of the auger is provided with a vent valve.

[0008] In the technical solution of this utility model, one end of the negative pressure fan is connected to the rear end of the powder pushing screw through a connecting pipe, and the other end is connected to the exhaust pipe through a horizontal connecting pipe.

[0009] In the technical solution of this utility model, the exhaust port of the exhaust pipe faces upward.

[0010] In the technical solution of this utility model, the outlet end of the lifting scraper is connected to the lead powder silo.

[0011] The auger and powder-pushing spiral in the technical solution of this utility model are set horizontally.

[0012] In the technical solution of this utility model, the powder pushing spiral is positioned higher than the auger.

[0013] This utility model employs a pneumatic lead powder conveying device consisting of an auger motor, an auger, a lifting scraper, a bent pipe, a powder pushing screw, a negative pressure fan, and an exhaust pipe. The auger has a lead powder discharge port at its front end. The bent pipe and the powder pushing screw are connected between the auger and the lifting scraper. The negative pressure fan and the exhaust pipe are connected to the powder pushing screw. Therefore, when conveying lead powder to the designated lead powder silo, the lead powder enters the powder pushing screw through the bent pipe at the rear end of the auger under the pressure of the negative pressure fan. During the process of the lead powder passing through the bent pipe, large lead particles and other impurities in the lead powder fall to the bottom of the auger under gravity, screening out the large lead particles and other impurities. Simultaneously, the cool air drawn in by the negative pressure fan lowers the temperature of the lead powder below its auto-ignition temperature.

[0014] This invention features the ability to screen out large lead particles and other impurities from lead powder and to keep the temperature of the lead powder below its auto-ignition temperature. It is mainly used for pneumatically conveying lead powder to a lead powder silo. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] In the diagram: 1-Auger motor; 2-Auger; 3-Lifting scraper; 4-Lead powder discharge port; 5-Ventilation valve; 6-Bend; 7-Negative pressure fan; 8-Exhaust pipe; 9-Powder pushing screw. Detailed Implementation

[0017] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings of this specification are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0018] like Figure 1 As shown, one embodiment of the lead powder pneumatic conveying device of this utility model consists of an auger motor 1, an auger 2, a bend 6, a vent valve 5, a lifting scraper 3, a powder pushing screw 9, a negative pressure fan 7, and an exhaust pipe 8. The auger motor 1, the auger 2, and the lifting scraper 3 are the same as those in existing hinged conveying devices.

[0019] The auger 2 is horizontally positioned. The auger motor 1 is connected to the front side of the auger 2, and the rear side of the auger 2 is closed. A lead powder inlet 4 is provided at the upper front end of the auger 2. Lead powder containing larger lead particles and other impurities enters the auger 2 through the lead powder inlet 4 and is conveyed to the rear of the auger 2 by the action of the auger motor 1.

[0020] The bend 6 is a U-shaped bend with both ends pointing downwards, and the two ends are at different heights. The lower bend 6 end is connected to the upper end of the rear of the auger 2, and the vent valve 5 is located at the lower end of the auger 2 opposite to the lower bend 6 end.

[0021] The powder pushing spiral 9 is set horizontally. The higher bend 6 is connected to the upper front end of the powder pushing spiral 9.

[0022] The lifting scraper 3 is arranged longitudinally, and its lower end is connected to the upper rear end of the powder pushing spiral 9. The outlet end of the lifting scraper 3 is connected to the lead powder silo.

[0023] One end of the negative pressure fan 7 is connected to the rear side of the powder pushing screw 9 via a horizontal connecting pipe, and the other end is connected to the exhaust pipe 8 via a horizontal connecting pipe. After the exhaust pipe 8 is vertically bent, the exhaust port faces upward.

[0024] Lead powder enters the pipe of auger 2 through lead powder inlet 4, and is transported above vent valve 5 before being drawn into the pipe of bend 6. Vent valve 5 does not allow solids to pass through, and introduces cold air to cool the lead powder. Bend 6 blocks large lead particles and other impurities, causing them to accumulate on top of vent valve 5. Vent valve 5 is cleaned periodically according to the pressure of negative pressure fan 7. The lead powder then enters the lead powder pusher screw 9 through bend 6 and is further conveyed to the lead powder silo by lifting scraper 3. During the pneumatic conveying process, the temperature of the lead powder can be reduced, and bend 6 and pusher screw 9 can effectively screen out large lead particles and other impurities.

Claims

1. A pneumatic conveying device for lead powder, comprising an auger motor (1), an auger (2), and a lifting scraper (3), wherein the front end of the auger (2) is provided with a lead powder discharge port (4), characterized in that: The auger (2) and the lifting scraper (3) are connected by a bend (6) and a powder pushing screw (9); the powder pushing screw (9) is connected to a negative pressure fan (7) and an exhaust pipe (8).

2. The pneumatic conveying device for lead powder according to claim 1, characterized in that: The bend (6) is a U-shaped bend with both ends facing downwards; one end of the bend (6) is connected to the rear end of the auger (2), and the other end is connected to the front end of the powder pushing spiral (9); the lifting scraper (3) is connected to the rear end of the powder pushing spiral (9).

3. The pneumatic conveying device for lead powder according to claim 2, characterized in that: The rear end of the auger (2) is provided with a vent valve (5).

4. The lead powder pneumatic conveying device according to claim 3, characterized in that: One end of the negative pressure fan (7) is connected to the rear end of the powder pushing spiral (9) through a connecting pipe, and the other end is connected to the exhaust pipe (8) through a horizontal connecting pipe.

5. A pneumatic conveying device for lead powder according to claim 4, characterized in that: The exhaust port of the exhaust pipe (8) faces upward.

6. A pneumatic conveying device for lead powder according to any one of claims 1-5, characterized in that: The outlet end of the lifting scraper (3) is connected to the lead powder silo.

7. A pneumatic conveying device for lead powder according to any one of claims 1-5, characterized in that: The auger (2) and the powder pushing spiral (9) are set horizontally.

8. A pneumatic conveying device for lead powder according to claim 7, characterized in that: The powder pushing spiral (9) is positioned higher than the auger (2).

Images