A lead slag screening device

Abstract

A lead slag screening device is disclosed, comprising an outer cover, frame plates, a hopper, and a screen frame assembly. The hopper and screen frame assembly are arranged sequentially from top to bottom inside the outer cover. The hopper is fixed to the screen frame assembly via support plates extending from its lower sides. The screen frame assembly includes four side panels, springs at the four corners of the lower part of the side panels, and a screen mesh at the lower part of the side panels. Springs are fixed at the four corners of the lower part of each side panel, and support legs are fixed below each spring. The support legs are located in a trench. An opening is provided on one side of the front side panel, with a U-shaped discharge port extending outward from the opening. An arc-shaped curved plate is fixed between the middle of the rear side panel and the front end of the right side panel. The screen mesh is fixed at the bottom between the rear, left, and front side panels and the curved plate, with the left side higher than the right. This invention improves the service life of the collection bag, and during manual feeding, the obstruction of the outer cover and the use of an external fan effectively reduce lead dust, which is beneficial to environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of storage battery processing technology, and in particular to a lead slag screening device. Background Technology

[0002] As is well known, in the process of lead-acid battery manufacturing, lead blocks need to be melted into molten lead, which is used for casting and welding. The process of making molten lead requires slag from the lead pot, which contains lead ash and large reusable lead slag blocks. In order to reduce costs, the large lead slag blocks need to be screened out and reused in the furnace, thus removing the large lead slag blocks, i.e., clear lead, from the lead slag.

[0003] The existing lead slag screening process involves manually feeding the lead slag into the upper part of a vibrating screen using an iron shovel. The vibration of the screen separates large particles of lead slag from lead dust. Since the vibrating screen is exposed to the air, and the temperature of the freshly retrieved lead slag is around 160℃, the manual feeding of material onto the screen not only causes workers to feel scorching heat, but the lead dust raised by the lead slag falling onto the screen is also detrimental to the environment. Furthermore, because the freshly retrieved lead slag is at a high temperature, the lead dust that passes directly through the screen falls into the collection bag at the bottom. The collection bag, which is constantly exposed to high temperatures, becomes a consumable item that needs to be replaced frequently, which is quite troublesome and increases losses. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a lead slag screening device.

[0005] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0006] A lead slag screening device includes an outer cover, a frame plate, a hopper, and a screen frame assembly. The frame plate is set on the ground above a trench, and the outer cover is fixed on top of the frame plate. The top of the outer cover has a discharge port. Inside the outer cover, the hopper and the screen frame assembly are arranged sequentially from top to bottom. The hopper is fixed to the screen frame assembly by support plates extending from both sides at the bottom. The bottom of the hopper has a pull-out discharge plate. The screen frame assembly includes four side panels, springs set at the four corners of the lower part of the side panels, and a screen set at the lower part of the side panels. Springs are fixed at the four corners of the lower part of the side panels, and support legs are fixed at the lower part of the springs. The support legs are set in the trench. An opening is provided on one side of the front side panel, and a U-shaped discharge port is fixed outward from the opening. An arc-shaped curved plate is fixed between the middle of the rear side panel and the front end of the right side side panel. The screen is fixed at the bottom between the rear side panel, the left side panel, the front side panel, and the curved plate with the left side higher than the right side.

[0007] The lead slag screening device includes an outer casing comprising a conical section and a square section integrally formed from top to bottom. The material discharge port is located at the upper opening of the conical section. A dust removal port connected to an external fan duct is provided on one side of the upper part of the conical section. An outer baffle connected by a hinge is provided at the front of the outer casing. The lower end of the outer baffle is located above the U-shaped discharge port.

[0008] In the aforementioned lead slag screening device, the length of the discharge hopper is less than the length of the screen frame assembly. The left end of the discharge hopper is vertically aligned with the left end of the screen frame assembly, and the right end of the discharge hopper is located on the right side of the screen frame assembly and corresponds vertically with the curved plate.

[0009] In the aforementioned lead slag screening device, the upper surface of the U-shaped discharge port is lower than the upper surface of the screen frame assembly plate.

[0010] The lead slag screening device has dovetail grooves that are wider at the top and narrower at the bottom on both sides of the bottom of the front and rear plates of the hopper. Pull strips that cooperate with the dovetail grooves are provided on both sides of the top of the discharge plate. A handle is fixed at the front of the discharge plate.

[0011] The aforementioned lead slag screening device has a temperature sensor fixed below the material feeding plate, and the temperature sensor is connected to an external PLC controller via a signal.

[0012] The lead slag screening device also includes an inverted conical ash collection box located at the bottom of the screen frame assembly. An electromagnetic valve is provided at the bottom of the ash collection box, and a vibration motor is fixed to the outside of one side of the ash collection box. A collection bag connected to an external dust collector is connected to the lower part of the ash collection box.

[0013] Due to the adoption of the above technical solution, this utility model has the following beneficial effects:

[0014] The lead slag screening device of this utility model involves placing a frame plate on the upper part of a trench and installing a sealed outer cover on the frame plate. Lead slag is manually shoveled into the outer cover. The lead slag on the hopper is isolated from the human body by the outer cover, reducing the burning sensation. A dust removal port is set at the upper part of the outer cover, and an external fan sucks away the lead dust raised during the material feeding. A temperature sensor is fixed under the material feeding plate. When the lead slag temperature reaches the set temperature, the material feeding plate is manually pulled out, and the lead slag falls into the screen frame assembly for sieving. Through the inclined screen and the vibrating motor outside the dust collection box, large particles of lead slag slide out from the discharge port for collection. The lead dust falls into the collection bag at the bottom and is subsequently collected and discharged by an external dust collector. This utility model has a simple and compact structure, improves the service life of the collection bag, and effectively reduces lead dust during manual feeding due to the obstruction of the outer cover and the use of the external fan, which is beneficial to environmental protection. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the planar structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the material discharge hopper of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the screen frame assembly of this utility model.

[0019] In the diagram: 1. Material inlet; 2. Outer cover; 3. Hinge; 4. Material hopper; 5. Outer baffle; 6. Material discharge plate; 7. Screen frame assembly; 8. Frame plate; 9. Dust collection box; 10. Vibrating motor; 11. Screen; 12. Discharge port; 13. Support plate; 14. Handle; 15. Discharge plate; 16. Curved plate; 17. Support leg; 18. Dust collection port; 19. Collection bag; 20. Temperature sensor; 21. Spring. Detailed Implementation

[0020] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0021] Combined with appendix Figure 1-4 The lead slag screening device includes an outer cover 2, a frame plate 8, a hopper 4, and a screen frame assembly 7. The frame plate 8 is set on the ground above the trench, and the outer cover 2 is fixed on top of the frame plate 8. The top of the outer cover 2 is provided with a discharge port 1. Inside the outer cover 2, the hopper 4 and the screen frame assembly 7 are arranged sequentially from top to bottom. The hopper 4 is fixed to the screen frame assembly 7 by support plates 13 extending from both sides at the bottom. The bottom of the hopper 4 is provided with a pull-out discharge plate 6. The screen frame assembly 7 includes four surrounding plates and is set in the surrounding plates. The four corners of the lower part of the plate are springs 21 and the screen 11 is set at the lower part of the plate. Springs 21 are fixed at the four corners of the lower part of the plate. Support legs 17 are fixed at the lower part of the springs 21. The support legs 17 are fixed in the trench. An opening is provided on one side of the front plate. A U-shaped discharge port 12 is fixed outward from the opening. An arc-shaped curved plate 16 is fixed between the middle of the rear plate and the front end of the right side plate. The screen 11 is fixed at the bottom between the rear plate, the left plate, the front plate and the curved plate 16 with the left side higher than the right side.

[0022] Furthermore, the outer cover 2 includes a conical section and a square section integrally formed from top to bottom. The material discharge port 1 is located at the upper opening of the conical section. A dust removal port 18 connected to the air duct of an external fan is provided on one side of the upper part of the conical section. An outer baffle 5 connected by a hinge 3 is provided at the front of the outer cover 2. The lower end of the outer baffle 5 is located above the U-shaped discharge port 12, and the upper end face of the U-shaped discharge port 12 is lower than the upper end face of the frame plate of the screen frame assembly 7. Specifically, the outer cover 2 is fixed to... The upper part of the frame plate 8, which sits on the ground, is designed so that workers can easily feed materials into the discharge port 1. This facilitates manual feeding. During the feeding process, the lead dust is drawn away by the connection between the air duct of the external fan and the dust removal port 18. The external fan is existing technology and can be turned on when workers are feeding materials and turned off when they are not feeding materials. The outer baffle 5 covers the outside of the discharge hopper 4 and its lower end is located above the U-shaped discharge port 12, effectively preventing lead dust from drifting outwards during feeding.

[0023] Furthermore, the length of the discharge hopper 4 is less than the length of the screen frame assembly 7. The left end of the discharge hopper 4 is vertically aligned with the left end of the screen frame assembly 7, and the right end of the discharge hopper 4 is located on the right side of the screen frame assembly 7 and corresponds vertically with the curved plate 16. The bottom sides of the front and rear plates of the discharge hopper 4 are provided with dovetail grooves that are wider at the top and narrower at the bottom. The upper sides of the discharge plate 6 are provided with pull strips that cooperate with the dovetail grooves. A handle 14 is fixed at the front of the discharge plate 6, and a temperature sensor 20 is fixed at the bottom of the discharge plate 6. The temperature sensor 20 is connected to an external PLC controller via a signal.

[0024] Specifically, the temperature is set to 40 degrees Celsius in the external PLC controller. When the signal obtained by the temperature sensor 20 is transmitted to the PLC controller, the temperature reaches the set value, and the PLC controller issues an alarm signal. The setting method of the PLC controller, the signal transmission method of the temperature sensor 20, and the alarm method are all existing technologies. The specific principle control will not be described in detail. When the worker sees the alarm signal, he lifts the outer baffle 5, holds the handle 14 and pulls the material drop plate 6 outward. As the material drop plate 6 moves outward, the lead slag on the material drop plate 6 falls onto the screen 11. Through the screen 11, which is higher on the left and lower on the right, large particles of lead slag roll down to the discharge plate 15 at the discharge port 12. The filtered lead ash and lead slag fall into the ash collection box 9.

[0025] Furthermore, it also includes an inverted conical ash collection box 9 located at the bottom of the screen frame assembly 7. The edge of the upper large opening of the ash collection box 9 is fixedly connected to the lower end face of the four surrounding panels. An electromagnetic valve is provided at the bottom of the ash collection box 9. A vibration motor 10 is fixedly located on the outside of one side of the ash collection box 9. A collection bag 19 connected to an external dust collector is connected to the lower part of the ash collection box 9. Specifically, the filtered lead ash and lead slag can be temporarily stored in the ash collection box 9 and collected several times before being placed into the collection bag 19. When it is necessary to place it, the electromagnetic valve at the bottom of the ash collection box 9 is opened, and the vibration motor 10 is turned on when the material drop plate 6 starts to drop material. The electromagnetic valve and the vibration motor 10 are both controlled by an external PLC control system. When it is necessary to turn them on or off, the operator only needs to touch the indicator key on the LCD screen of the PLC controller.

[0026] In implementing the lead slag screening device described in this utility model, during use, workers use shovels to feed the salvaged lead slag into the discharge port 1. At this time, an external fan is turned on to remove the lead dust raised inside the outer casing 2. The lead slag falls from the discharge port 1 onto the discharge hopper 4 for cooling. When the temperature sensor 20 at the bottom of the discharge plate 6 transmits a signal to the external PLC control system, the PLC control system will issue an alarm after the temperature drops to 40 degrees Celsius, reminding the workers to discharge the lead slag for separation. The workers then lift the outer baffle 5 and pull out the discharge plate 6. At this time, the lead slag on the discharge plate 6 falls onto the screen 11 of the screen frame assembly 7. When the discharge plate 6 separates from the discharge hopper 4, the outer baffle 5... Plate 5 continues to cover the outside of screen frame assembly 7. Vibration motor 10 is turned on, and large lead slag blocks slide through the screen with the left side higher than the right side onto the discharge plate 15 of discharge port 12. A collection box can be placed at the bottom of discharge plate 15 to collect lead slag blocks. Lead ash and small lead slag particles fall into ash collection box 9, waiting to be discharged. When discharge is required, the operator opens the solenoid valve through the PLC control system. The lead ash and small lead slag particles in ash collection box 9 fall into collection bag 19, and are cleaned and recycled by an external dust collector. The structure of the dust collector and the cleaning and recycling of the collected lead ash and lead slag are existing technologies. The specific cleaning and recycling methods are not within the scope of protection of this application, so they will not be described in detail.

[0027] The parts of this utility model not described in detail are existing technologies.

[0028] The embodiments selected herein for the purpose of disclosing the inventive objectives of this utility model are currently considered appropriate; however, it should be understood that this utility model is intended to include all variations and modifications of the embodiments that fall within the scope of this concept and utility model.

Claims

1. A lead slag screening device comprising a housing, a frame plate, a drop chute and a screen frame assembly, characterised in that: The frame plate is set on the ground above the trench, and the outer cover is fixed on the frame plate. The top of the outer cover has a material discharge port. Inside the outer cover, from top to bottom, there are a material discharge hopper and a screen frame assembly. The material discharge hopper is fixed to the screen frame assembly by support plates extending from both sides at the bottom. The bottom of the material discharge hopper has a pull-out material discharge plate. The screen frame assembly includes four side panels, springs set at the four corners of the lower part of the side panels, and a screen set at the lower part of the side panels. Springs are fixed at the four corners of the lower part of the side panels, and support legs are fixed at the lower part of the springs. The support legs are set in the trench. An opening is set on one side of the front side panel, and a U-shaped discharge port is fixed outward from the opening. An arc-shaped curved plate is fixed between the middle of the rear side panel and the front end of the right side panel. The screen is fixed at the bottom between the rear side panel, left side panel, front side panel, and curved plate with the left side higher than the right side.

2. The lead slag screening device of claim 1, wherein: The outer casing includes a conical section and a square section integrally formed from top to bottom. The material discharge port is located at the upper opening of the conical section. A dust removal port connected to the air duct of an external fan is provided on one side of the upper part of the conical section. An outer baffle connected by a hinge is provided at the front of the outer casing. The lower end of the outer baffle is located above the U-shaped discharge port.

3. The lead slag screening device of claim 1, wherein: The length of the hopper is less than the length of the screen frame assembly. The left end of the hopper is aligned vertically with the left end of the screen frame assembly, and the right end of the hopper is located on the right side of the screen frame assembly and corresponds vertically with the curved plate.

4. The lead slag screening device according to claim 1, characterized in that: The upper surface of the U-shaped discharge port is lower than the upper surface of the screen frame assembly plate.

5. The lead slag screening device according to claim 1, characterized in that: The bottom sides of the front and rear plates of the hopper are provided with dovetail grooves that are wider at the top and narrower at the bottom. Pull-out strips that cooperate with the dovetail grooves are provided on both sides of the top of the discharge plate. A handle is fixed at the front of the discharge plate.

6. The lead slag screening device according to claim 1, characterized in that: A temperature sensor is fixed under the material feeding plate, and the temperature sensor is connected to an external PLC controller via a signal.

7. The lead slag screening device according to claim 1, characterized in that: It also includes an inverted conical dust collection box located at the bottom of the screen frame assembly. A solenoid valve is provided at the bottom of the dust collection box, and a vibration motor is fixed to the outside of one side of the dust collection box. A collection bag connected to an external dust collector is connected to the lower part of the dust collection box.

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