A conveying device for sludge combustion

Abstract

The present invention relates to the technical field of sludge incineration equipment, and discloses a conveying equipment for sludge combustion, including a storage component and a conveying equipment, wherein the storage component cooperates with the conveying equipment; wherein the storage component includes a fixed bin, a movable bin and a corrugated bin, one end of the corrugated bin is fixed to the fixed bin, and the other end thereof is fixed to the movable bin, and the bottom opening of the movable bin is connected to the feed port of the conveying equipment; wherein the bottom opening of the fixed bin is located in the top opening of the movable bin. The conveying equipment for sludge combustion, by adding a fixed bin, a movable bin and a conveying equipment outside a fluidized bed boiler, the fixed bin and the movable bin cooperate with each other to store sludge, and the conveying equipment delivers the sludge into the fluidized bed boiler, in this process, the sludge is prevented from contacting with coal during transportation, thereby preventing the coal and the sludge from easily agglomerating and causing congestion in the fluidized bed boiler.

Description

Technical Field

[0001] The invention relates to the technical field of sludge incineration equipment, in particular to a conveying equipment for sludge combustion. Background Art

[0002] Sludge contains germs, parasites, pathogens and heavy metals, etc. Therefore, the sludge discharged from dredging needs to be properly handled. At present, the main sludge treatment methods include sludge composting, sludge landfill, sludge incineration, etc. Although sludge composting has low investment and operating costs and is easy to operate and manage, it contains germs, parasites, pathogens and heavy metals that are unfavorable to crops and can easily cause secondary pollution; sludge landfill treatment will occupy a large amount of land and contain certain toxic substances. Improper landfilling can easily cause leachate to pollute groundwater. Compared with the above two methods, sludge incineration is the most thorough and maximum volume reduction sludge treatment method. This method can well solve the problem of secondary pollution of sludge, thereby realizing the resource utilization of sludge.

[0003] There are two main traditional methods of sludge incineration:

[0004] 1. Mix the sludge with the coal and send it to the fluidized bed boiler for incineration. Since the moisture content of the sludge to be incinerated is about 60%, the moisture content of the coal increases after the coal absorbs the moisture in the sludge. The coal and the sludge are easy to agglomerate and cause congestion in the fluidized bed boiler, thereby increasing the operating cost of the fluidized bed boiler. The combustion efficiency of the coal will also be greatly reduced after being soaked in water.

[0005] 2. The sludge is sent into the furnace for incineration by a plunger pump. This sludge treatment method is costly, with a set of equipment costing at least RMB 2 million. It will also seriously affect the thermal efficiency of the fluidized bed boiler. When using a plunger pump to incinerate the sludge, the sludge must be diluted to a sludge with a moisture content of more than 80%. This is actually equivalent to pumping water into the fluidized bed boiler. In this case, the temperature of the fluidized bed boiler will drop by about 100 to 150°C, affecting the thermal efficiency of the fluidized bed boiler by about 2 to 3%, which is not economical. Summary of the invention

[0006] The present invention provides a conveying device for sludge combustion, which has the advantage of avoiding congestion of a mixture of sludge and coal in a fluidized bed boiler, and solves the problems mentioned in the above background technology.

[0007] The present invention provides the following technical solution: a conveying device for sludge combustion, comprising a storage component and a conveying device, wherein the storage component cooperates with the conveying device; wherein the storage component comprises a fixed bin, a movable bin and a corrugated bin, wherein one end of the corrugated bin is fixed to the fixed bin, and the other end thereof is fixed to the movable bin, and the bottom opening of the movable bin is connected to the feed port of the conveying device; wherein the bottom opening of the fixed bin is within the top opening of the movable bin.

[0008] As a preferred solution of the sludge combustion conveying equipment of the present invention, a sleeve is fixedly connected to the bottom opening of the fixed bin, and the sleeve is located inside the movable bin.

[0009] As a preferred solution of the conveying equipment for sludge combustion described in the present invention, wherein: the movable bin is divided into a top bin and a bottom bin, and the bottom opening of the top bin is connected to the top opening of the bottom bin; wherein the side plate of the top bin is fixed to the bottom of the corrugated bin, and the interior of the top bin is sleeved on the outer surface of the sleeve; wherein the bottom opening of the bottom bin is connected to the feed port of the conveying equipment.

[0010] As a preferred embodiment of the sludge combustion conveying equipment described in the present invention, it further comprises a material blocking assembly, wherein the material blocking assembly comprises a material blocking square cylinder, a shelf rod and a baffle, one end of the material blocking square cylinder is connected to the top bin, the other end thereof is connected to the bottom bin, and the three are internally communicated; wherein a through groove is provided at the side plate of the material blocking square cylinder, one end of the shelf rod is fixed to the inner side wall of the material blocking square cylinder, and the other end thereof passes through the through groove and extends to the outside of the material blocking square cylinder; wherein the baffle is laid on the top of the shelf rod, one end of the baffle is in contact with the inner side wall of the material blocking square cylinder, and the other end thereof passes through the through groove and extends to the outside of the material blocking square cylinder.

[0011] As a preferred solution of the sludge combustion conveying equipment of the present invention, a pulley is installed at the bottom of the baffle, and the pulley cooperates with the shelf rod.

[0012] As a preferred solution of the sludge combustion conveying equipment of the present invention, a scraper is fixed to the bottom of the baffle, and the bottom of the scraper is in contact with the top surface of the shelf rod.

[0013] As a preferred solution of the sludge combustion conveying equipment of the present invention, a feeding pipe is provided on the top of the fixed bin, and a leaky screen is fixed inside the feeding pipe.

[0014] As a preferred solution of the sludge combustion conveying equipment of the present invention, an air cannon is fixed to the outside of the fixed bin side plate.

[0015] As a preferred solution of the sludge combustion conveying equipment of the present invention, a vibration pump is fixed to the outside of the bottom bin side plate.

[0016] The present invention has the following beneficial effects:

[0017] 1. The sludge combustion conveying equipment is provided with a fixed bin, a movable bin and a conveying equipment outside the fluidized bed boiler. The fixed bin and the movable bin cooperate with each other to store the sludge. The conveying equipment conveys the sludge into the fluidized bed boiler. In this process, the sludge is prevented from contacting with the coal during the conveying process, thereby preventing the coal and the sludge from easily agglomerating and causing congestion in the fluidized bed boiler.

[0018] 2. The conveying equipment for sludge combustion has a fixed bin and a movable bin fixed by a corrugated bin. The corrugated bin is a cylindrical structure surrounded by corrugated plates. The corrugated bin has good elasticity, so that the movable bin can move up and down or left and right within a certain range relative to the fixed bin. Since the temperature of the fluidized bed boiler is too high during operation, its outer wall will expand at high temperature, thereby squeezing the movable bin through the conveying equipment, and the corrugated bin can just buffer the squeezing force to prevent the pressure from damaging the movable bin or fluidized bed filter.

[0019] 3. The conveying equipment for sludge combustion is an auger feeder. The moisture content of the sludge to be burned is about 60%. After preliminary drying, it is in the shape of granules or small pieces. Therefore, an auger conveyor is used to transport the sludge to the fluidized bed boiler. Compared with the method of using a plunger pump to transport the sludge, this method will not cause much change in the furnace temperature after transportation, and its economy is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the partial structure of the corrugated bin of the present invention;

[0022] Figure 3 It is a partial structural schematic diagram of the material blocking assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the baffle plate and its bottom pulley matching with the shelf pole of the present invention;

[0024] Figure 5 For the present invention Figure 1 A schematic diagram of the structure of the middle stopper assembly;

[0025] Figure 6 It is a schematic structural diagram of the leakage screen of the present invention.

[0026] In the figure: 100-storage component; 101-fixed bin; 101a-sleeve; 101b-feeding pipe; 101c-leakage screen; 102-corrugated bin; 103-movable bin; 103a-top bin; 103b-bottom bin; 200-conveying equipment; 300-material blocking component; 301-material blocking square tube; 301a-through groove; 302-shed pole; 303-baffle; 303a-pulley; 303b-scraper; 400-air cannon; 500-vibration pump; 600-fluidized bed boiler. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] See also Figure 1 A conveying device for sludge combustion includes a storage component 100 and a conveying device 200, and the storage component 100 cooperates with the conveying device 200; it should be noted that the conveying device 200 is an auger feeder, which is also called a screw conveyor. The rotating spiral blades push the material for spiral conveying and are widely used in various industries. The auger conveyor is suitable for horizontal or inclined conveying of powdered, granular and small block materials. The moisture content of the sludge to be burned is about 60%, and then it is preliminarily dried in the shape of granular or small blocks. Therefore, an auger conveyor is used for transportation. The discharge port of the auger conveyor is connected to the feed port of the fluidized bed boiler 600, and the sludge can be delivered to the fluidized bed boiler 600 through the auger conveyor.

[0030] The storage assembly 100 includes a fixed bin 101, a movable bin 103 and a corrugated bin 102. The fixed bin 101 is a cone-shaped bin structure enclosed by stainless steel material. An opening is provided at the bottom of the fixed bin 101, and a feeding pipe 101b is provided at the top cover plate. The height of the fixed bin 101 is about four meters. The fixed bin 101 is fixed to the factory wall through a steel frame. It should be noted that Figure 1 The steel frame for fixing the fixed factory and the factory and the fixed bin 101 is not shown. The side plate of the fixed bin 101 is fixed to the top of the corrugated bin 102. The bottom of the fixed bin 101 is embedded in the interior of the corrugated bin 102. The corrugated bin 102 is a cylindrical structure surrounded by corrugated plates. Figure 2It is a schematic diagram of the partial structure of the corrugated bin 102. The corrugated bin 102 has two upper and lower openings. The bottom opening of the corrugated bin 102 is fixed to the side plate of the movable bin 103. The top of the movable bin 103 is sleeved inside the corrugated bin 102, and the bottom of the fixed bin 101 is located inside the movable bin 103. The bottom opening of the movable bin 103 is connected to the feed port of the conveying equipment 200.

[0031] It should be noted that the sludge enters the fixed bin 101 through the feeding pipe 101b at the top, then enters the movable bin 103 through the opening at the bottom of the fixed bin 101, and then enters the feed port of the screw feeder through the bottom opening of the movable bin 103 again, and is finally sent to the interior of the fluidized bed boiler 600 for incineration through the screw feeder. The fixed bin 101 and the movable bin 103 are fixed by the corrugated bin 102. The corrugated bin 102 is a cylindrical structure surrounded by corrugated plates. The corrugated bin 102 has good elasticity, so that the movable bin 103 can move up and down or left and right within a certain range relative to the fixed bin 101. Since the temperature of the fluidized bed boiler 600 is too high during operation, its outer wall will expand at high temperature, thereby squeezing the movable bin 103 through the conveying equipment 200. , and the corrugated plate can just buffer the squeezing force to prevent the pressure from damaging the movable bin 103 or the fluidized bed filter. If the fixed bin 101 and the movable bin 103 are made into an integral structure, the overall structure will be more than 6 meters high, and the overall structure needs to be fixed to the wall of the entire processing plant. At this time, if the fluidized bed boiler 600 expands due to excessive temperature, the force generated by the expansion will directly act on the bottom of the movable bin 103 through the feed port of the conveying equipment 200. Since the movable bin 103 is fixed to the fixed bin 101 as a whole, the movable bin 103 will be damaged under the force in the long run. Since the force is mutual, the feed port of the fluidized bed boiler 600 will also be damaged due to the force, or the conveying equipment 200 will be damaged.

[0032] The bottom opening of the fixed bin 101 is fixedly connected with a sleeve 101a, and the sleeve 101a is located inside the movable bin 103. The sleeve 101a is a cylindrical structure surrounded by stainless steel material, and has two openings at the top and the bottom. The top of the sleeve 101a is connected to the bottom of the fixed bin 101, and the sleeve 101a is entirely sleeved inside the movable bin 103. The sleeve 101a can prevent the sludge in the fixed bin 101 from flowing into the corrugated bin 102 and the movable bin 103. If the sludge flows into it, the overall resilience of the corrugated bin 102 will be reduced, thereby reducing the buffering effect of the corrugated bin 102 under the expansion force of the fluidized bed boiler 600.

[0033] The movable bin 103 is divided into a top bin 103a and a bottom bin 103b, and the bottom opening of the top bin 103a is communicated with the top opening of the bottom bin 103b; wherein, the side panel of the top bin 103a is fixed to the bottom of the corrugated bin 102, and the interior of the top bin 103a is sleeved on the outer surface of the sleeve 101a; wherein, the bottom opening of the bottom bin 103b is communicated with the feed port of the conveying equipment 200. It should be noted that the overall structure of the top bin 103a is the same as that of the sleeve 101a, and the bottom bin 103b is a conical bin, which is used to concentrate the sludge and transport it to the feed port of the conveying equipment 200.

[0034] Combination Figure 1 , 3 , 4 and 5, further comprising a material blocking assembly 300, the material blocking assembly 300 comprising a material blocking square tube 301, a shelf rod 302 and a baffle 303. It should be noted that the structure of the material blocking square tube 301 is the same as that of the top bin 103a, and the top of the material blocking square tube 301 is adapted to the bottom of the top bin 103a, the top opening of the material blocking square tube 301 is communicated with the bottom opening of the top bin 103a, and the bottom opening thereof is communicated with the top opening of the bottom bin 103b; wherein, a through groove 301a is provided at the side plate of the material blocking square tube 301, one end of the shelf rod 302 is connected to the material blocking square tube 301 The baffle plate 303 is laid on the top of the shelf rod 302, one end of the baffle plate 303 is in contact with the inner wall of the material blocking square tube 301, and the other end thereof passes through the through slot 301a and extends to the outside of the material blocking square tube 301, the bottom surface of the shelf rod 302 is fixed to the bottom surface of the inner cavity of the through slot 301a, and a stopper is provided on the top of the shelf rod 302 at one end outside the material blocking square tube 301, which prevents the pulley 303a at the bottom of the baffle plate 303 from detaching from the shelf rod 302 when the baffle plate 303 is pulled toward the outside of the material blocking square tube 301.

[0035] It should be noted that the baffle 303 is a rectangular plate structure. Figure 4 The width of the left and right sides of the baffle 303 is Figure 3 The widths of the left and right sides of the inner cavity of the middle material blocking square tube 301 are adapted, and the shelf rods 302 are regular quadrangular prism-shaped steel rods. The number of shelf rods 302 is greater than one, and the shelf rods 302 play a supporting role for the baffle 303, such as Figure 1When the right side of the baffle plate 303 contacts the right side of the inner cavity of the material blocking square cylinder 301, the baffle plate 303 will completely block the material blocking square cylinder 301, and the sludge will not be able to enter the bottom bin 103b from the top bin 103a through the material blocking square cylinder 301. People only need to drag the baffle plate 303 toward the outside of the material blocking square cylinder 301. At this time, the baffle plate 303 will slide relative to the shelf rod 302. When the baffle plate 303 moves toward the outside of the material blocking square cylinder 301, the distance between the right side of the baffle plate 303 and the right side of the inner cavity of the material blocking square cylinder 301 gradually increases. The larger this distance is, the greater the amount of sludge that will enter the bottom bin 103b from the top bin 103a through the material blocking square cylinder 301 per unit time. People can adjust the amount of sludge that passes from the top bin 103a through the material blocking square cylinder 301 into the bottom bin 103b per unit time according to the needs of the combustion rate.

[0036] like Figure 4 A pulley 303a is installed at the bottom of the baffle 303, and the pulley 303a cooperates with the shelf pole 302. The pulley 303a is an I-shaped wheel, and the shelf pole 302 is embedded in the I-shaped wheel. The pulley 303a can reduce the friction between the baffle 303 and the shelf pole 302, making it convenient for people to push or pull the baffle 303, and the I-shaped wheel facilitates the mutual engagement of the pulley 303a and the shelf pole 302 to avoid misalignment of the pulley 303a on the shelf pole 302.

[0037] A scraper 303b is also fixed to the bottom of the baffle 303, and the bottom of the scraper 303b is in contact with the top surface of the shelf rod 302. When the sludge enters the bottom bin 103b from the top bin 103a through the material blocking square cylinder 301, the sludge is easily left on the top surface of the shelf rod 302, and the bottom of the scraper 303b is in contact with the top surface of the shelf rod 302. When the baffle 303 is pushed into the material blocking square cylinder 301, the scraper 303b can scrape off the sludge on the top surface of the shelf rod 302 to prevent the sludge from clogging the I-shaped wheel.

[0038] Combination Figure 1 and 6 As shown, a feeding pipe 101b is provided on the top of the fixed bin 101, and a leaky screen 101c is fixed inside the feeding pipe 101b, wherein: Figure 5 for Figure 1The top view of the middle sieve 101c, the sieve 101c is a whole formed by welding multiple rod-shaped steel structures in a criss-cross shape. The sludge is fed into the fixed bin 101 from the feeding pipe 101b via a conveyor belt. The sieve 101c can screen and disperse the sludge entering the fixed bin 101 from the feeding pipe 101b. If there is slight adhesion between the sludge and large-grained mud clumps are formed during transportation, the sludge can break up the mud clumps under the action of gravity when passing through the sieve 101c, and large-grained mud clumps are prevented from entering the fixed bin 101. The sludge in the fixed bin 101 will eventually enter the conveying equipment 200 from the outlet of the bottom bin 103b. If the mud clumps are too large, it is easy to cause blockage of the conveying equipment 200, so large mud clumps need to be prevented from entering the fixed bin 101.

[0039] An air cannon 400 is fixed to the outside of the side panel of the fixed bin 101. The fixed bin 101 as a whole is fixed to the factory, so the air cannon 400 is used to install its side wall. If the bottom opening of the fixed bin 101 is blocked, starting the air cannon 400 can clear the blocked area.

[0040] A vibration pump 500 is fixed to the outside of the side plate of the bottom bin 103b. If the bottom bin 103b is blocked, starting the vibration pump 500 can vibrate the bottom bin 103b and the entire movable bin 103, thereby loosening the blocked area in the bottom bin 103b.

[0041] The working principle of the present invention is as follows: first, the sludge is fed into the fixed bin 101 through the feeding pipe 101b via a conveyor belt, and the sludge enters the interior of the conveying device 200 from the bottom of the fixed bin 101 through the top bin 103a, the material blocking square cylinder 301 and the bottom bin 103b in turn, and is finally fed into the fluidized bed boiler 600 by the conveying device 200 for incineration. People can drag the baffle 303 toward the outside of the material blocking square cylinder 301 according to the needs of the combustion rate, and adjust the distance between the right end of the baffle 303 and the right side of the inner cavity of the material blocking square cylinder 301 to adjust the amount of sludge passing from the top bin 103a through the material blocking square cylinder 301 to the bottom bin 103b per unit time. If the bottom bin 103b is blocked, starting the vibration pump 500 can vibrate the bottom bin 103b and the entire movable bin 103, thereby loosening the blocked area in the bottom bin 103b. If the bottom opening of the fixed bin 101 is blocked, starting the air cannon 400 can dredge the blocked area.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conveying device for sludge combustion, characterized in that: It comprises a storage component (100) and a conveying device (200), wherein the storage component (100) cooperates with the conveying device (200); The storage assembly (100) comprises a fixed bin (101), a movable bin (103) and a corrugated bin (102); one end of the corrugated bin (102) is fixed to the fixed bin (101), and the other end of the corrugated bin (102) is fixed to the movable bin (103); the bottom opening of the movable bin (103) is connected to the feed port of the conveying device (200); Wherein, the bottom opening of the fixed bin (101) is located inside the top opening of the movable bin (103); A sleeve (101a) is fixedly connected to the bottom opening of the fixed bin (101), and the sleeve (101a) is located inside the movable bin (103); The movable bin (103) is divided into a top bin (103a) and a bottom bin (103b), and a bottom opening of the top bin (103a) is connected to a top opening of the bottom bin (103b); The side plate of the top bin (103a) is fixed to the bottom of the corrugated bin (102), and the interior of the top bin (103a) is sleeved on the outer surface of the sleeve (101a); Wherein, the bottom opening of the bottom bin (103b) is connected to the feed port of the conveying device (200); It also includes a material blocking assembly (300), the material blocking assembly (300) including a material blocking square tube (301), a shelf rod (302) and a baffle (303), one end of the material blocking square tube (301) is connected to the top bin (103a), and the other end is connected to the bottom bin (103b), and the three are internally connected; A through slot (301a) is provided on the side plate of the material-blocking square cylinder (301); one end of the shelf rod (302) is fixed to the inner wall of the material-blocking square cylinder (301), and the other end passes through the through slot (301a) and extends to the outside of the material-blocking square cylinder (301); The baffle plate (303) is laid on the top of the shelf pole (302), one end of the baffle plate (303) contacts the inner wall of the material blocking square cylinder (301), and the other end passes through the through slot (301a) and extends to the outside of the material blocking square cylinder (301); An air cannon (400) is fixed to the outside of the side plate of the fixed bin (101), and a vibration pump (500) is fixed to the outside of the side plate of the bottom bin (103b).

2. A sludge combustion conveying equipment according to claim 1, characterized in that: A pulley (303a) is installed at the bottom of the baffle (303), and the pulley (303a) cooperates with the shelf pole (302).

3. A sludge combustion conveying equipment according to claim 2, characterized in that: A scraper (303b) is also fixed to the bottom of the baffle (303), and the bottom of the scraper (303b) is in contact with the top surface of the shelf pole (302).

4. A sludge combustion conveying equipment according to any one of claims 1 to 3, characterized in that: A feeding pipe (101b) is provided on the top of the fixed bin (101), and a leaky screen (101c) is fixed inside the feeding pipe (101b).

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