Material conveying device

Abstract

The utility model relates to a material conveying device, which aims to solve the technical problem that irreversible damage is easily caused when an existing conveyor suddenly encounters large-mass materials in a high-corrosion environment, and adopts the technical scheme that a scraping way is arranged in the middle of a scraper chain of a scraper conveyor, a plurality of scrapers are uniformly arranged on the scraper chain, the scrapers face the scraping way, and the scrapers face the scraping way. The middle of the scraper conveyor is immersed in the wet slag pool, the whole scraper conveyor is of a square-bracket-shaped structure, a conveying device shell is arranged on the periphery of the scraper conveyor, the motor is arranged on the shell, and the motor is connected with the transmission chain wheel through a motor transmission belt; the alarm system comprises a shutdown alarm lamp and a displacement limiter, the shutdown alarm lamp is fixedly arranged on the shell, the displacement limiter is hung on the inner wall of the shell, and a gap is reserved between the displacement limiter and the scraper chain; by means of multiple protection modes such as the DCS and the alarm system, irreversible damage and deformation caused by the fact that the scraper chain suddenly encounters large-mass materials are avoided, and on-site personnel can sense abnormal conditions in time.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste conveying equipment, and in particular relates to a material conveying device. Background Art

[0002] At present, there are many types of material transportation, which can be roughly divided into two types: flexible and inflexible. Due to the influence of many factors such as production process, applicable place, environment, etc., the types of optional transportation methods are greatly reduced. If there are limited space, different environments, and both vertical and horizontal displacements are required, the application of chain scraper conveyors is particularly important. With the increasingly fierce market competition, high production efficiency requirements and high shutdown costs, continuous production is particularly important. When facing a highly corrosive environment, corrosion-resistant and low-rigidity materials are selected. If a large mass of materials is encountered suddenly, it will cause irreversible damage and deformation, and normal transportation cannot be achieved. At present, most people adopt "intermittent shutdown maintenance", which still cannot eliminate uncontrollable factors. When encountering large mass materials, emergency load reduction repairs and replacements are necessary, and early warning and response are not possible. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and provide a material conveying device.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A material conveying device comprises a scraper conveyor, wherein a scraper path is arranged in the middle of a scraper chain of the scraper conveyor, and a plurality of scrapers are evenly arranged on the scraper chain, and the scrapers face the scraper path;

[0006] It also includes a DCS system, a motor and an alarm system. A conveying device housing is provided around the outer side of the scraper conveyor. The motor is arranged on the conveying device housing on one side of the transmission sprocket of the scraper conveyor. The motor is connected to the transmission sprocket through a motor transmission belt.

[0007] The alarm system includes a shutdown alarm light and two displacement limiters, wherein the shutdown alarm light is fixed on the top surface of the conveying device housing, and the two displacement limiters are respectively hung on the inner wall of the conveying device housing just above the two scraper chains on one side of the transmission sprocket, and a gap is left between the displacement limiter and the scraper chain;

[0008] The DCS system is electrically connected to the motor, the shutdown warning light and the displacement limiter respectively.

[0009] Furthermore, the middle part of the scraper conveyor is the water immersion part, which is immersed in the wet slag pool on one side of the rotary kiln, and the water immersion part is directly opposite to the slag discharge port of the rotary kiln. The driving sprocket and the driven sprocket of the scraper conveyor are respectively arranged on both sides of the wet slag pool. The whole scraper conveyor is in an "︺" shape structure. The wet slag pool is filled with production water. A blanking port is opened on the conveying device housing below the driving sprocket, and a receiving box is arranged directly below the blanking port.

[0010] Furthermore, the upper end of the conveying device housing at the water immersion part is higher than the bottom surface of the rotary kiln.

[0011] Furthermore, a current real-time monitoring and alarm system and an overload self-protection interlock system are provided in the DCS system.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By setting multiple protection methods such as a displacement limiter, a DCS system, and a shutdown alarm light, the present utility model solves the problem that the scraper and the scraper chain are made of anti-corrosion and low-rigidity material. When encountering large-quality materials suddenly, irreversible damage and deformation may occur. The on-site personnel can timely perceive abnormal situations and then quickly make response measures, greatly reducing the maintenance and replacement costs;

[0014] 2. Through the design of the "︺" shape structure, the scraper conveyor of the present utility model can realize double displacement of the material in the horizontal and vertical positions, achieving automatic collection;

[0015] 3. The structure of the present utility model is simple, the operation is convenient, and it is easy to be industrially produced, having significant advantages of economy and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is an installation structural diagram of the present utility model;

[0018] In the figure, 1 - conveying device housing, 2 - scraper chain, 3 - DCS system, 4 - motor, 5 - shutdown alarm light, 6 - motor drive belt, 7 - driving sprocket, 8 - blanking port, 9 - receiving box, 10 - displacement limiter, 11 - scraper, 12 - scraping track, 13 - driven sprocket, 14 - water immersion part, 15 - rotary kiln, 16 - secondary combustion chamber, 17 - ash slag, 18 - wet slag pool. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described below with reference to the drawings and embodiments.

[0020] Embodiment

[0021] As shown Figure 1-2 in the figure, a material conveying device includes a scraper conveyor. There is a scraping channel 12 in the middle of the scraper chain 2 of the scraper conveyor. A number of scrapers 11 are evenly arranged on the scraper chain 2. The scrapers 11 face the scraping channel 12 and achieve orderly operation through their own weight and the action of the limit card slots;

[0022] It also includes a DCS system 3, a motor 4 and an alarm system. The middle part of the scraper conveyor is an immersion part 14. The immersion part 14 is immersed in the wet slag pool 18 on one side of the rotary kiln 15, and the immersion part 14 is directly opposite to the slag discharge port of the rotary kiln 15. The upper end of the conveying device housing 1 here is higher than the bottom surface of the rotary kiln 15. The wet slag pool 18 is filled with production water, which can play a role in liquid sealing for the whole system. At the same time, it can be used to cool the slag body and can also play a great buffering role for the falling of large heavy objects. The driving sprocket 7 and the driven sprocket 13 of the scraper conveyor are respectively arranged on both sides of the wet slag pool 18, making the whole scraper conveyor in an "︺" shape structure. A feeding port 8 is opened on the conveying device housing 1 below the driving sprocket 7. A receiving box 9 is arranged directly below the feeding port 8. Through this series of connections, during the normal transmission process, the horizontal and vertical position double displacements of the slag material are realized, and automatic collection is achieved. The outer periphery of the scraper conveyor is provided with a conveying device housing 1. The motor 4 is arranged on the conveying device housing 1 on one side of the driving sprocket 7. The motor 4 is connected to the driving sprocket 7 through a motor drive belt 6 to provide the original power for the chain operation;

[0023] The alarm system includes a shutdown alarm lamp 5 and two displacement limiters 10. The shutdown alarm lamp 5 is fixedly arranged on the top surface of the conveying device housing 1. After the motor stops running, on-site prompt alarm is carried out, and the operating personnel can respond in time. At the same time, it does not affect the normal production of other work sections. The two displacement limiters 10 are respectively hung on the inner wall of the conveying device housing 1 directly above the two scraper chains 2 on one side of the driving sprocket 7, and there is a gap between the displacement limiters 10 and the scraper chains 2. When encountering materials with large mass / large volume, the scraper deforms, which in turn causes the chain to bulge. After bulging to a certain height, it touches the displacement limiter 10, and then triggers an emergency stop interlock to achieve emergency stop and prevent the chain from further deforming and suffering irreversible damage;

[0024] The DCS system 3 is internally provided with a current real-time monitoring and alarm system and an overload self-protection interlock system, which are respectively electrically connected to the motor 4, the shutdown alarm lamp 5 and the displacement limiter 10. When the motor load is too large and exceeds the set current value, an alarm prompt is given on the DCS panel, and then contact is made with the on-site personnel to stop the motor in time for crushing response work. When the instantaneous value exceeds the interlock design value, the self-protection interlock will be triggered to avoid motor damage and play a multiple protection role.

[0025] The working process of the present utility model:

[0026] When the utility model is in use, the motor 4 is started through the DCS system 3. The motor 4 drives the driving sprocket 7 to rotate through the motor drive belt 6. The driving sprocket 7 drives the scraper chain 2 to drive the scraper 11 to move. The ash slag falls from the slag outlet through the rotary kiln 15 and lands on the scraping path 12. Since the scraper chain 2, the scraper 11 and the scraping path 12 here are all immersed in the medium water in the wet slag pool 18, when the ash slag falls, the medium water can play a liquid sealing role for the whole system. At the same time, it can be used to cool the ash slag, and can also play a great buffering role for the falling of large heavy objects. The ash slag falling on the scraping path 12 is scraped by the scraper 11 and moves forward and upward until it reaches the driving sprocket 7, and then falls into the receiving box 9 from the feeding port 8, realizing the effective collection of materials;

[0027] When a large heavy object falls on the scraping path 12 and moves forward with the scraper 11, the scraper chain 2 is lifted by the large-volume heavy object to form a bulge. When the height of the bulge reaches or exceeds the preset height of the system, the scraper chain 2 touches the displacement limiter 10, and then triggers the emergency stop interlock, and realizes emergency stop through the DCS system 3 to prevent the chain from further deforming and causing irreversible damage;

[0028] When the load of the motor 4 is too large and exceeds the set current value, an alarm prompt is given on the DCS panel, and then contact is made with the on-site personnel to stop the motor 4 in time for the crushing response work. When the instantaneous value exceeds the interlock design value, the DCS system 3 will trigger the self-protection interlock to avoid damage to the motor 4. At the same time, the shutdown alarm light 5 lights up for prompt alarm to remind the operators to make a response in time, playing a multiple protection role.

Claims

1. A material conveying device, comprising a scraper conveyor, wherein a scraper path (12) is provided in the middle of a scraper chain (2) of the scraper conveyor, a plurality of scrapers (11) are evenly provided on the scraper chain (2), and the scrapers (11) face the scraper path (12); It is characterized in that It also includes a DCS system (3), a motor (4) and an alarm system. A conveying device housing (1) is provided around the outer side of the scraper conveyor. The motor (4) is arranged on the conveying device housing (1) on one side of a drive sprocket (7) of the scraper conveyor. The motor (4) is connected to the drive sprocket (7) via a motor drive belt (6). The alarm system comprises a shutdown alarm light (5) and two displacement limiters (10), wherein the shutdown alarm light (5) is fixedly mounted on the top surface of the conveying device housing (1), and the two displacement limiters (10) are respectively hung on the inner wall of the conveying device housing (1) directly above the two scraper chains (2) on one side of the transmission sprocket (7), and a gap is left between the displacement limiter (10) and the scraper chain (2); The DCS system (3) is electrically connected to the motor (4), the shutdown warning light (5) and the displacement limiter (10) respectively.

2. A material conveying device according to claim 1, characterized in that: The middle part of the scraper conveyor is a water-immersed part (14), which is immersed in a wet slag pool (18) on one side of a rotary kiln (15), and the water-immersed part (14) is directly opposite to the slag outlet of the rotary kiln (15). The drive sprocket (7) and the driven sprocket (13) of the scraper conveyor are respectively arranged on both sides of the wet slag pool (18). The scraper conveyor as a whole has a "︺"-shaped structure. The wet slag pool (18) is filled with production water. A material discharge port (8) is provided on the conveying device housing (1) below the drive sprocket (7), and a material receiving box (9) is provided directly below the material discharge port (8).

3. A material conveying device according to claim 2, characterized in that: The upper end of the conveying device shell (1) at the immersion portion (14) is higher than the bottom surface of the rotary kiln (15).

4. A material conveying device according to claim 1, characterized in that: The DCS system (3) is provided with a current real-time monitoring alarm system and an overload self-protection interlocking system.

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