A coke multi-stage screening device

Abstract

The utility model discloses a kind of coke multistage screening devices, it is related to coke production technical field, including screening box and the fixed seat being set in the both sides of screening box, the top of screening box is connected with feed casing, the inside of screening box is connected with screen, the top of fixed seat is connected with hot blast blower, the present application is by wind pipe frame cooperation conveying pipe and hot blast lance to dry when coke multistage screening, it is solved that coke will increase in production storage moisture, in the process of multistage screening, it is easy to stick, resulting in screen hole blocking reduces the problem of screening efficiency, it is favorable to improve the working efficiency of multistage screening device;The present application is by suction powder tank cooperation dust extraction pipe to collect and process fine powder in the process of coke screening, it is solved that coke collides or rubs with screen in the screening process Additional fine powder can be generated, so that finished coke fine powder exceeds the standard and affects subsequent use Problem, it is favorable to improve the working quality of multistage screening device.

Description

Technical Field

[0001] This utility model relates to the field of coke production technology, specifically to a multi-stage coke screening device. Background Technology

[0002] The development of multi-stage coke screening equipment stems from the industrial production's demand for more refined coke particle size classification. In the early days, coke screening mostly used simple fixed screens, which were inefficient and lacked precision. With the development of industries such as metallurgy and coal chemical industry, the requirements for coke particle size uniformity, strength and other indicators have increased, and traditional single-stage screening can hardly meet the needs of multi-stage particle size classification.

[0003] Traditional coke multi-stage screening devices have screening and drying as two separate processes, requiring separate equipment. In addition, the moisture content of coke increases during production and storage, making it prone to sticking during multi-stage screening, which can cause screen blockage and reduce screening efficiency, resulting in low working efficiency of the multi-stage screening device.

[0004] Furthermore, regardless of whether it is the metallurgical industry or the coal chemical industry, if there is too much fine powder in the coke, it will seriously affect its normal production. During the screening process, the coke will generate extra fine powder by colliding with each other or rubbing against the screen, resulting in the finished coke having excessive fine powder, affecting subsequent use, and causing poor working quality of multi-stage screening devices. Utility Model Content

[0005] To address the above problems, this utility model provides a multi-stage coke screening device, which solves the aforementioned issues.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage coke screening device, comprising a screening box and fixed seats arranged on both sides of the screening box, a feed shell connected to the top of the screening box, a screen connected inside the screening box, a hot air blower connected to the top of the fixed seats, a connecting hose connected to one end of the hot air blower, and an air conveying pipe frame connected to the other end of the connecting hose.

[0007] One side of the air conveying pipe frame is connected to several conveying pipes, the outside of which is connected to the side of the screening box, and one side of each of the several conveying pipes is connected to a hot air spray pipe, which is located below the screen.

[0008] Preferably, the top of the screening box is connected to a powder suction box, and several first powder suction pipes are connected to both sides of the powder suction box.

[0009] Preferably, a second powder suction pipe is connected to one side of each of the first powder suction pipes, and the outside of the second powder suction pipe is connected to the top of the sieving box.

[0010] Preferably, one end of each of the second powder suction tubes is connected to a powder suction horn.

[0011] Preferably, the powder suction box is connected to door panels on both sides, and an exhaust pipe is connected to the top of the powder suction box.

[0012] Preferably, a buffer is connected to the top of the fixed base, a connecting frame is connected to the top of the buffer, and one side of the connecting frame is connected to one side of the screening box.

[0013] Preferably, a curtain is connected to one side of the screening box, and a vibration motor is connected to the bottom of the screening box.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This application uses an air duct frame in conjunction with a conveying pipe and a hot air spray pipe to dry coke during multi-stage screening, reducing the moisture content and stickiness of the coke. This allows the coke to pass through the screen more smoothly for multi-stage screening, solving the problem that the moisture content of coke increases during production and storage, making it easy to stick together during multi-stage screening, which leads to screen blockage and reduced screening efficiency. This is beneficial to improving the working efficiency of the multi-stage screening device.

[0016] 2. This application uses a powder suction box in conjunction with a dust suction pipe to collect and process fine powder during the coke screening process, which prevents excessive powder from being absorbed into the finished coke. It solves the problem that extra fine powder is generated when coke collides with each other or rubs against the screen during the screening process, which causes excessive fine powder in the finished coke and affects its subsequent use. This is beneficial to improving the working quality of the multi-stage screening device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the screening box of this utility model;

[0019] Figure 3 This is a cross-sectional view of the screening box of this utility model;

[0020] Figure 4 This is a schematic diagram of the hot air nozzle structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the top structure inside the screening box of this utility model;

[0022] Figure 6 This is a schematic diagram of the powder suction box structure of this utility model.

[0023] The diagram shows the following components: 1. Screening box; 2. Feeding shell; 3. Screen; 4. Curtain; 5. Fixing base; 6. Buffer; 7. Connecting frame; 8. Hot air blower; 9. Connecting hose; 10. Air duct frame; 11. Conveying pipe; 12. Hot air nozzle; 13. Powder suction box; 14. First powder suction pipe; 15. Second powder suction pipe; 16. Powder suction horn; 17. Door panel; 18. Exhaust pipe; 19. Vibration motor. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] Please see Figures 1 to 6 A multi-stage coke screening device includes a screening box 1 and fixed seats 5 set on both sides of the screening box 1. The top of the screening box 1 is connected to a feed shell 2. The inside of the screening box 1 is connected to a screen 3, which is divided into an upper screen 3 and a lower screen 3. The number of screens 3 and the size of the screen holes can be increased as needed. The top of the fixed seat 5 is connected to a hot air blower 8. One end of the hot air blower 8 is connected to a connecting hose 9. The connecting hose 9 has a certain degree of flexibility, so that the connecting hose 9 can move when the screening box 1 vibrates, avoiding the hot air blower 8 from having a rigid impact with the vibration. The other end of the connecting hose 9 is connected to an air supply pipe frame 10. The vibration motor 19 is a device that installs eccentric blocks (unbalanced weights) at both ends of the rotor shaft and drives the equipment to vibrate by generating centrifugal force through high-speed rotation. The vibration motor 19 and its working process are well known technologies. Those skilled in the art can and should understand its specific functions and structure, so they will not be described in detail here.

[0026] The coke is subjected to multi-stage screening by the vibration motor 19 driving the screening box 1 to vibrate.

[0027] Specifically, coke enters the screening box 1 through the feed shell 2 and falls onto the upper screen 3. As the vibrating motor 19 drives the screening box 1 and the screen 3 to vibrate, the coke moves on the upper screen 3 for screening. The screened coke falls onto the lower screen 3, and the separated coke is retained on the upper screen 3.

[0028] At the same time, the screened coke continues to be screened again on the lower screen 3. The screened coke falls on the inner bottom surface of the screening box 1, and the separated coke is retained on the lower screen 3, thereby realizing multi-stage screening of coke.

[0029] After multi-stage screening, the coke will flow to one side of the screening box 1 on its respective screen 3 and the inner bottom surface of the screening box 1 for discharge. It should be noted that a multi-stage collection mechanism is provided on one side of the screening box 1 to distinguish and collect the coke after multi-stage screening. The multi-stage collection mechanism is actually different collection components used to collect coke of different sizes separately. It is a well-known technology, and those skilled in the art can and should understand its specific function and structure, so it will not be described in detail here.

[0030] A plurality of conveying pipes 11 are connected to one side of the air conveying pipe frame 10. The exterior of the plurality of conveying pipes 11 is connected to the side of the screening box 1. A hot air nozzle 12 is connected to one side of the plurality of conveying pipes 11. The hot air nozzle 12 is located below the screen 3.

[0031] In the multi-stage screening process of coke, the hot air blower 8 generates hot air and delivers it to the air conveyor frame 10 through the connecting hose 9. The hot air is then distributed to each conveying pipe 11 through the air conveyor frame 10, and then the hot air nozzle 12 sprays out the hot air to dry the coke in the screening box 1. This reduces the moisture content of the coke and its stickiness, allowing the coke to pass through the screen 3 more smoothly for multi-stage screening. This solves the problem that the moisture content of the coke increases during production and storage, making it easy to stick together during multi-stage screening, which leads to clogging of the screen 3 and reduced screening efficiency.

[0032] It should be further explained that the hot air nozzle 12 sprays hot air into the interior of the screening box 1, which can also increase the temperature inside the screening box 1. The combination of the two can improve the drying efficiency of coke. Moreover, the angle of the screen 3 is set in conjunction with the hot air blower 8 so that the coke can be dried when it flows on the screen 3 to the outlet. Therefore, there is no problem that the coke has been screened before it is dried.

[0033] It should be noted that the hot air blower 8 uses an electric motor to drive the impeller to rotate. Under the action of centrifugal force, air is drawn in from the fan axis, accelerated by the impeller and thrown out radially. It is collected by the fan casing and guided to the air outlet, forming an airflow with a certain pressure and flow rate. At the same time, the built-in electric heating element (resistance wire) generates heat through the resistance when energized. When the air passes around the electric heating element, it absorbs this heat, thereby increasing its temperature and turning it into hot air that is output.

[0034] The top of the screening box 1 is connected to a powder suction box 13, and several first powder suction pipes 14 are connected to both sides of the powder suction box 13. An air pump is installed inside the powder suction box 13. The air pump works to suck up and collect the fine powder in the screening box 1 through the first powder suction pipes 14 and the second powder suction pipes 15. It should be noted that a filter bag is also installed in the powder suction box 13 so that the powder entering the powder suction box 13 is intercepted by the filter bag. Then the cleaned air is discharged through the exhaust pipe 18 to ensure normal air flow and prevent excessive powder in the finished coke. This solves the problem that the coke will generate extra fine powder due to collisions or friction with the screen during the screening process, which will cause the fine powder in the finished coke to exceed the standard and affect subsequent use. It is beneficial to improve the working quality of the multi-stage screening device.

[0035] The air pump and filter bag installed in the powder suction box 13 are both well-known technologies, and the technology is very mature at present. Those skilled in the art can and should understand their specific functions and structures, so they will not be described in detail here.

[0036] It is important to note that because the hot air nozzle 12 blows air upwards from below the filter screen 3, it will blow the fine powder upwards when the hot air nozzle 12 is working. At this time, the second powder suction pipe 15 works with the hot air nozzle 12 to collect the fine powder.

[0037] A second suction pipe 15 is connected to one side of each of the first suction pipes 14, and the outside of the second suction pipe 15 is connected to the top of the sieving box 1.

[0038] One end of each of the several second powder suction pipes 15 is connected to a powder suction horn 16. The large opening of the powder suction horn 16 increases the coverage area of ​​the powder suction inlet, making it easier for the powder suction box 13 to capture fine powder in the screening box 1 during operation.

[0039] The powder suction box 13 is connected to door panels 17 on both sides. Personnel can open the door panels 17 regularly to clean and maintain the filter bags inside the powder suction box 13. The top of the powder suction box 13 is connected to an exhaust pipe 18.

[0040] A buffer 6 is connected to the top of the fixed base 5, and a connecting frame 7 is connected to the top of the buffer 6. One side of the connecting frame 7 is connected to one side of the screening box 1. The buffer 6 is used to buffer the impact of the vibration motor 19 on the fixed base 5 when it vibrates, thereby improving the stability of the multi-stage screening device. It should be noted that the buffer 6 is a buffer spring, which is a well-known technology. Those skilled in the art can and should understand its specific function and structure, so it will not be described in detail here. The buffer 6 will not affect the normal operation of the vibration motor 19 and the screening box 1.

[0041] A curtain 4 is connected to one side of the screening box 1, and a vibration motor 19 is connected to the bottom of the screening box 1. An opening and closing plate is provided in the feed shell 2. The opening and closing plate is opened when coke is added and closed when coke is not added. At this time, the curtain 4 is used to close the screening box 1, so that the powder suction box 13 can better absorb and collect fine powder.

[0042] It should be further added that after multi-stage screening, the coke will be discharged through the curtain 4 by its own gravity, so the curtain 4 will not affect the discharge of the coke.

[0043] When using this utility model:

[0044] First, the coke is screened in multiple stages by the vibration motor 19 driving the screening box 1 to vibrate. Specifically, the coke enters the screening box 1 through the feed shell 2 and falls onto the upper screen 3. As the vibration motor 19 drives the screening box 1 and the screen 3 to vibrate, the coke moves on the upper screen 3 for screening. The screened coke falls onto the lower screen 3, while the separated coke remains on the upper screen 3. At the same time, the screened coke continues to be screened again on the lower screen 3. The screened coke falls onto the inner bottom surface of the screening box 1, while the separated coke remains on the lower screen 3. This achieves multi-stage screening of the coke. The coke after multi-stage screening flows to one side of the screening box 1 and is discharged after passing through its respective screen 3 and the inner bottom surface of the screening box 1.

[0045] Secondly, during the multi-stage screening of coke, the hot air blower 8 generates hot air and delivers it to the air conveyor frame 10 through the connecting hose 9. The hot air is then distributed to each conveying pipe 11 through the air conveyor frame 10, and then the hot air nozzle 12 sprays out the hot air to dry the coke in the screening box 1. This reduces the moisture content of the coke and its stickiness, allowing the coke to pass through the screen 3 more smoothly for multi-stage screening. This solves the problem that the moisture content of the coke increases during production and storage, making it easy to stick together during multi-stage screening, which leads to clogging of the screen 3 and reduced screening efficiency.

[0046] Then, the powder suction box 13 is equipped with an air pump. The air pump works to suck up and collect the fine powder in the sieving box 1 through the first powder suction pipe 14 and the second powder suction pipe 15. It should be noted that the powder suction box 13 is also equipped with a filter bag so that the powder sucked into the powder suction box 13 will be intercepted by the filter bag. Then the cleaned air is discharged through the exhaust pipe 18 to ensure normal air flow. Because the hot air nozzle 12 blows air upward below the filter screen 3, the fine powder will be blown upward when the hot air nozzle 12 is working. At this time, the second powder suction pipe 15 works with the hot air nozzle 12 to collect the fine powder.

[0047] Finally, the coke after multi-stage screening will be discharged through the curtain 4 by its own gravity, so the curtain 4 will not affect the discharge of the coke.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage coke screening device, comprising a screening box (1) and fixed seats (5) disposed on both sides of the screening box (1), wherein a feed shell (2) is connected to the top of the screening box (1), and a screen (3) is connected inside the screening box (1), characterized in that: A hot air blower (8) is connected to the top of the fixed base (5), one end of the hot air blower (8) is connected to a connecting hose (9), and the other end of the connecting hose (9) is connected to an air supply pipe frame (10). The air supply pipe frame (10) is connected to a number of conveying pipes (11) on one side. The outside of the number of conveying pipes (11) is connected to the side of the screening box (1). A hot air nozzle (12) is connected to one side of the number of conveying pipes (11). The hot air nozzle (12) is located below the screen (3).

2. The multi-stage coke screening device according to claim 1, characterized in that: The top of the sieving box (1) is connected to a powder suction box (13), and several first powder suction pipes (14) are connected to both sides of the powder suction box (13).

3. The multi-stage coke screening device according to claim 2, characterized in that: A second suction pipe (15) is connected to one side of each of the first suction pipes (14), and the outside of the second suction pipe (15) is connected to the top of the sieving box (1).

4. The multi-stage coke screening device according to claim 3, characterized in that: One end of each of the second powder suction tubes (15) is connected to a powder suction horn (16).

5. A multi-stage coke screening device according to claim 2, characterized in that: The powder suction box (13) is connected to door panels (17) on both sides, and the top of the powder suction box (13) is connected to an exhaust pipe (18).

6. The multi-stage coke screening device according to claim 1, characterized in that: The top of the fixed base (5) is connected to a buffer (6), and the top of the buffer (6) is connected to a connecting frame (7). One side of the connecting frame (7) is connected to one side of the screening box (1).

7. A multi-stage coke screening device according to claim 6, characterized in that: A curtain (4) is connected to one side of the screening box (1), and a vibration motor (19) is connected to the bottom of the screening box (1).

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