Feeding device for hazardous waste incineration

Abstract

The utility model relates to the technical field of hazardous waste incineration treatment, in particular to a feeding device for hazardous waste incineration, which comprises a connecting shell, a crushing mechanism arranged inside the connecting shell, a feeding hopper fixedly connected to the top of the connecting shell, a chute fixedly connected to the bottom of the connecting shell, and a cooling mechanism arranged outside the chute. And a rubbing mechanism is arranged in the chute. The device has the beneficial effects that when the device is used, the speed difference always exists between the first rubbing assembly and the second rubbing assembly, so that the friction plates on the first rubbing assembly and the second rubbing assembly rub caked hazardous waste passing through the space between the first rubbing assembly and the second rubbing assembly, the caked hazardous waste is rubbed to be broken and scattered, and the waste can be rubbed to be uniform. The hazardous waste can be fully combusted conveniently, generation of harmful gas such as dioxin caused by insufficient combustion of the hazardous waste is avoided, meanwhile, the contact area is increased, the time needed by incineration is shortened, and therefore the incineration efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hazardous waste incineration treatment, in particular to a feeding device for hazardous waste incineration. Background Art

[0002] Hazardous waste refers to solid waste or liquid waste that has one or more hazardous characteristics such as corrosiveness, toxicity, flammability, reactivity, and infectivity, or may cause harmful effects on the ecological environment and human health. Since direct landfill of solid hazardous waste will pollute the surrounding environment, it is generally first incinerated at high temperature. When the solid hazardous waste to be incinerated is added to the incinerator, a feeding device is used.

[0003] Hazardous wastes come in various shapes and sizes, which can easily cause blockages during feeding. At the same time, when larger blocks of solid hazardous waste are directly fed into the rotary kiln for incineration, incomplete combustion may occur due to low internal heat transfer efficiency and insufficient oxygen contact area. It takes a long time to incinerate, which is inefficient. In addition, incomplete combustion of hazardous waste will lead to the generation of harmful gases such as dioxins.

[0004] The hazardous waste incineration feeding chute disclosed in Chinese patent CN219955343U includes a feeding hopper, a storage box is arranged below the feeding hopper; a first feeding valve is arranged between the storage box and the feeding hopper, and a second feeding valve is arranged at the bottom of the storage box; a pair of staggered cutting rollers are arranged in the storage box, and the cutting rollers are connected to a rotating motor; an arc chute is arranged below the storage box, the outlet of the arc chute is connected to an incinerator, and a cooling pipe for cooling is arranged at the outlet of the arc chute; a heat recovery mechanism is connected to the cooling pipe, the heat recovery mechanism is connected to a fan, and the air outlet of the fan is connected to the arc chute through a pipeline.

[0005] However, compared with the existing technology and the comparative scheme, it can be seen that the hazardous waste incineration feed chute still has the following problems in actual use:

[0006] When some semi-solid hazardous wastes with fluidity (such as chemical waste residues and heavy metal sludge) are incinerated, due to their certain fluidity and viscosity, they may accumulate and clump in the chute after being crushed in the feed hopper, or even agglomerate with other crushed solid hazardous wastes. When the agglomerated or agglomerated hazardous wastes enter the incinerator for incineration, the outside of the agglomerate is burned to form a hard shell, making the agglomerate like a large piece of solid hazardous waste. The inside cannot be fully burned, and it takes a long time to incinerate, resulting in reduced incineration efficiency. In addition, the incomplete combustion of hazardous waste will lead to the generation of harmful gases such as dioxins, which will harm the health of workers and pollute the environment. Utility Model Content

[0007] The purpose of the present utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a feeding device for hazardous waste incineration.

[0008] The purpose of the present utility model is achieved through the following technical solutions: A feeding device for hazardous waste incineration, including a connecting shell, a crushing mechanism is arranged inside the connecting shell, a feeding hopper is fixedly connected to the top of the connecting shell, a chute is fixedly connected to the bottom of the connecting shell, a cooling mechanism is arranged outside the chute, and a kneading mechanism is arranged inside the chute;

[0009] The kneading mechanism includes a second driving member, a first kneading assembly is arranged at the output end of the second driving member, a first irregular gear is arranged on the first kneading assembly, the first irregular gear meshes with a second irregular gear, and a second kneading assembly is arranged on the second irregular gear;

[0010] The first kneading assembly includes a connecting frame, a driving shaft is rotatably connected to one side of the connecting frame, a first sprocket is fixedly connected to the driving shaft, a driven shaft is rotatably connected to the side of the connecting frame away from the driving shaft, a second sprocket is fixedly connected to the driven shaft, a chain is arranged between the first sprocket and the second sprocket, a chain plate is fixedly connected to the chain, and a friction plate is fixedly connected to the chain plate through bolts;

[0011] The structure of the second kneading assembly is the same as that of the first kneading assembly.

[0012] Preferably, a guide plate is fixedly connected to the inside of the chute, an installation groove is opened in the inside of the chute, and a heat dissipation plate is fixedly connected to the outside of the chute.

[0013] Preferably, the crushing mechanism includes a first driving member, the first driving member is fixedly installed on the connecting shell, a first crushing roller is fixedly connected to the output end of the first driving member, a first gear is fixedly connected to the end of the first crushing roller away from the first driving member, the first gear meshes with a second gear, a second crushing roller is fixedly connected to one side of the second gear, and both the first crushing roller and the second crushing roller are rotatably connected to the inside of the connecting shell.

[0014] Preferably, the cooling mechanism includes a storage tank, a water inlet pipe is fixedly connected to the top of the storage tank, a drain pipe is fixedly connected to the bottom of one side of the storage tank, a cooling pipe is fixedly connected to one side of the storage tank, the cooling pipe is arranged between the heat dissipation plates, and a circulation pump is arranged between the cooling pipe and the storage tank.

[0015] Preferably, the first irregular gear includes a first half wheel and a second half wheel, the radius of the first half wheel is smaller than that of the second half wheel, and the first half wheel and the second half wheel are concentric.

[0016] Preferably, the second irregular gear includes a third half-wheel and a fourth half-wheel. The radius of the third half-wheel is smaller than that of the fourth half-wheel. The third half-wheel and the fourth half-wheel are concentric. The third half-wheel meshes with the second half-wheel, and the fourth half-wheel meshes with the first half-wheel.

[0017] Preferably, the second driving member is fixedly installed on the chute. The second kneading assembly and the first kneading assembly are symmetrically distributed inside the chute.

[0018] Preferably, the connecting frame is fixedly connected inside the chute through the installation groove. The driving shaft is fixedly connected to the output end of the second driving member. The first irregular gear is fixedly connected to the end of the driving shaft away from the second driving member.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] When in use, the feeding device for hazardous waste incineration makes there always be a speed difference between the first kneading assembly and the second kneading assembly. Thus, the friction plates on the first kneading assembly and the second kneading assembly knead the agglomerated hazardous waste passing between the first kneading assembly and the second kneading assembly, crush and disperse the agglomerated hazardous waste, making it convenient for full combustion, avoiding the generation of harmful gases such as dioxins caused by incomplete combustion of the hazardous waste, improving the contact area at the same time, reducing the time required for incineration, and thus improving the incineration efficiency.

[0021] Parts not involved in this device are the same as or can be implemented using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 is a schematic structural diagram of the present utility model;

[0024] Figure 2 is a schematic cross-sectional structural diagram of the present utility model;

[0025] Figure 3 is a schematic cross-sectional structural diagram of the connection shell of the present utility model;

[0026] Figure 4 is a schematic structural diagram of the crushing mechanism of the present utility model;

[0027] Figure 5 is a schematic structural diagram of the cooling mechanism of the present utility model;

[0028] Figure 6 is a schematic structural diagram of the kneading mechanism of the present utility model;

[0029] Figure 7 of the present utility model Figure 6 is an enlarged schematic structural diagram of part A in the present utility model;

[0030] Figure 8 is a disassembled schematic structural diagram of the first kneading assembly of the present utility model.

[0031] In the figure: 1, connecting shell; 2, crushing mechanism; 201, first driving member; 202, first crushing roller; 203, first gear; 204, second gear; 205, second crushing roller; 3, feed hopper; 4, chute; 5, cooling mechanism; 501, storage tank; 502, water inlet pipe; 503, drain pipe; 504, cooling pipe; 505, circulation pump; 6, kneading mechanism; 61, second driving member; 62, first kneading assembly; 621, connecting frame; 622, driving shaft; 623, first sprocket; 624, driven shaft; 625, second sprocket; 626, chain; 627, chain plate; 628, friction plate; 63, first irregular gear; 631, first half wheel; 632, second half wheel; 64, second irregular gear; 641, third half wheel; 642, fourth half wheel; 65, second kneading assembly; 7, material guiding plate; 8, installation groove; 9, heat dissipation plate. Specific embodiments

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0033] The additional aspects and advantages of the present utility model will be further given in the following description with reference to the drawings, and some will become obvious from the following description, or be understood through the practice of the present utility model.

[0034] Such as Figures 1 to 3As shown in the figure, a feeding device for hazardous waste incineration includes a connecting shell 1. A crushing mechanism 2 is arranged inside the connecting shell 1. A feeding hopper 3 is fixedly connected to the top of the connecting shell 1. A chute 4 is fixedly connected to the bottom of the connecting shell 1. A cooling mechanism 5 is arranged outside the chute 4. A kneading mechanism 6 is arranged inside the chute 4. A guide plate 7 is fixedly connected inside the chute 4. An installation groove 8 is formed inside the chute 4. A heat dissipation plate 9 is fixedly connected to the outside of the chute 4;

[0035] As Figure 2 and Figure 4 shown in the figure, the crushing mechanism 2 includes a first driving member 201, a first crushing roller 202, a first gear 203, a second gear 204 and a second crushing roller 205. The first driving member 201 is fixedly installed on the connecting shell 1. The output end of the first driving member 201 is fixedly connected to the first crushing roller 202. One end of the first crushing roller 202 away from the first driving member 201 is fixedly connected to the first gear 203. The first gear 203 meshes with the second gear 204. One side of the second gear 204 is fixedly connected to the second crushing roller 205. Both the first crushing roller 202 and the second crushing roller 205 are rotatably connected inside the connecting shell 1;

[0036] As Figure 1 , Figure 2 and Figure 5 shown in the figure, the cooling mechanism 5 includes a storage tank 501, a water inlet pipe 502, a drain pipe 503, a cooling pipe 504 and a circulation pump 505. The water inlet pipe 502 is fixedly connected to the top of the storage tank 501. The drain pipe 503 is fixedly connected to the bottom on one side of the storage tank 501. A cooling pipe 504 is fixedly connected to one side of the storage tank 501. The cooling pipe 504 is arranged between the heat dissipation plates 9. A circulation pump 505 is arranged between the cooling pipe 504 and the storage tank 501;

[0037] As Figure 2 , Figure 6 and Figure 7 shown in the figure, the kneading mechanism 6 includes a second driving member 61, a first kneading assembly 62, a first irregular gear 63, a second irregular gear 64 and a second kneading assembly 65. The second driving member 61 is fixedly installed on the chute 4. The output end of the second driving member 61 is provided with the first kneading assembly 62. The first kneading assembly 62 is provided with the first irregular gear 63. The first irregular gear 63 meshes with the second irregular gear 64. The second irregular gear 64 is provided with the second kneading assembly 65. The second kneading assembly 65 and the first kneading assembly 62 are symmetrically distributed inside the chute 4;

[0038] As Figure 2 , Figure 6 and Figure 8As shown in the figure, the first kneading assembly 62 includes a connecting frame 621, a driving shaft 622, a first sprocket 623, a driven shaft 624, a second sprocket 625, a chain 626, a chain plate 627, and a friction plate 628. The connecting frame 621 is fixedly connected to the inside of the chute 4 through the mounting groove 8. One side of the connecting frame 621 is rotatably connected to the driving shaft 622. The driving shaft 622 is fixedly connected to the output end of the second driving member 61. The first irregular gear 63 is fixedly connected to the end of the driving shaft 622 away from the second driving member 61. The first sprocket 623 is fixedly connected to the driving shaft 622. The other side of the connecting frame 621 away from the driving shaft 622 is rotatably connected to the driven shaft 624. The second sprocket 625 is fixedly connected to the driven shaft 624. A chain 626 is arranged between the first sprocket 623 and the second sprocket 625. The chain plate 627 is fixedly connected to the chain 626. The friction plate 628 is fixedly connected to the chain plate 627 by bolts;

[0039] As Figure 6 shown, the structure of the second kneading assembly 65 is the same as that of the first kneading assembly 62;

[0040] As Figure 7 shown, the first irregular gear 63 includes a first half wheel 631 and a second half wheel 632. The radius of the first half wheel 631 is smaller than that of the second half wheel 632. The first half wheel 631 and the second half wheel 632 are concentric;

[0041] As Figure 7 shown, the second irregular gear 64 includes a third half wheel 641 and a fourth half wheel 642. The radius of the third half wheel 641 is smaller than that of the fourth half wheel 642. The third half wheel 641 and the fourth half wheel 642 are concentric. The third half wheel 641 meshes with the second half wheel 632, and the fourth half wheel 642 meshes with the first half wheel 631.

[0042] The working process is as follows:

[0043] S1. Before use, first add cooling water to the storage tank 501 through the water inlet pipe 502. When in use, start the circulation pump 505. The circulation pump 505 drives the cooling water in the storage tank 501 into the cooling pipe 504 and then back to the storage tank 501 to cool the chute 4;

[0044] S2. Add the hazardous waste to be fed from the feed hopper 3 into the connection shell 1. Start the first driving member 201. The first driving member 201 drives the first gear 203 to rotate through the first crushing roller 202. The first gear 203 drives the second crushing roller 205 to rotate through the second gear 204. The first crushing roller 202 and the second crushing roller 205 crush the incoming solid hazardous waste. The crushed solid hazardous waste enters the chute 4 along the connection shell 1, and then enters the incinerator through the guide plate 7 and the kneading mechanism 6 for incineration;

[0045] S3. During the feeding process of incinerating some semi-solid hazardous wastes with fluidity (such as chemical industrial waste residues and heavy metal sludge), due to certain fluidity and viscosity, after being processed by the crushing mechanism 2, they may still accumulate and agglomerate in the chute 4, or even agglomerate together with other crushed solid hazardous wastes;

[0046] S4. The agglomerated hazardous waste slides down along the material guiding plate 7 between the first kneading assembly 62 and the second kneading assembly 65. The second driving member 61 is started. The second driving member 61 drives the first sprocket 623 and the first irregular gear 63 through the driving shaft 622. The second sprocket 625 drives the chain plate 627 through the chain 626 to drive the friction plate 628 to move. At the same time, the first irregular gear 63 drives the second irregular gear 64 to rotate, and the second irregular gear 64 drives the friction plate 628 on the second kneading assembly 65 to move;

[0047] S5. Since the first kneading assembly 62 is driven by the second driving member 61, the moving speeds of the friction plates 628 on the first kneading assembly 62 are always the same, while the second kneading assembly 65 is driven by the first irregular gear 63 and the second irregular gear 64;

[0048] S6. When the first half gear 631 meshes with the fourth half gear 642, the moving speed of the friction plate 628 on the second kneading assembly 65 is slower than that of the friction plate 628 on the first kneading assembly 62;

[0049] S7. When the second half gear 632 meshes with the third half gear 641, the moving speed of the friction plate 628 on the second kneading assembly 65 is faster than that of the friction plate 628 on the first kneading assembly 62;

[0050] S8. A speed difference always exists between the first kneading assembly 62 and the second kneading assembly 65, so that the friction plates 628 on the first kneading assembly 62 and the second kneading assembly 65 knead the agglomerated hazardous waste passing between the first kneading assembly 62 and the second kneading assembly 65, crush and disperse the agglomerated hazardous waste, making it convenient for full combustion, avoiding the generation of harmful gases such as dioxins caused by incomplete combustion of the hazardous waste, and at the same time increasing the contact area, reducing the time required for incineration, thereby improving the incineration efficiency.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A feeding device for hazardous waste incineration, characterized in that: It includes a connecting shell (1), inside which a crushing mechanism (2) is arranged. A feeding hopper (3) is fixedly connected to the top of the connecting shell (1), and a chute (4) is fixedly connected to the bottom of the connecting shell (1). A cooling mechanism (5) is arranged outside the chute (4), and a kneading mechanism (6) is arranged inside the chute (4). The kneading mechanism (6) includes a second driving part (61). The output end of the second driving part (61) is provided with a first kneading component (62). A first irregular gear (63) is arranged on the first kneading component (62). The first irregular gear (63) meshes with a second irregular gear (64). A second kneading component (65) is arranged on the second irregular gear (64). The first kneading component (62) includes a connecting frame (621). One side of the connecting frame (621) is rotatably connected to a driving shaft (622). A first sprocket (623) is fixedly connected to the driving shaft (622). The other side of the connecting frame (621) away from the driving shaft (622) is rotatably connected to a driven shaft (624). A second sprocket (625) is fixedly connected to the driven shaft (624). A chain (626) is arranged between the first sprocket (623) and the second sprocket (625). A chain plate (627) is fixedly connected to the chain (626). A friction plate (628) is fixedly connected to the chain plate (627) by bolts. The structure of the second kneading component (65) is the same as that of the first kneading component (62).

2. The feeding device for hazardous waste incineration according to claim 1, characterized in that: A guide plate (7) is fixedly connected inside the chute (4). An installation groove (8) is formed inside the chute (4). A heat dissipation plate (9) is fixedly connected to the outside of the chute (4).

3. The feeding device for hazardous waste incineration according to claim 2, wherein: The cooling mechanism (5) includes a storage tank (501). A water inlet pipe (502) is fixedly connected to the top of the storage tank (501). A drain pipe (503) is fixedly connected to the bottom of one side of the storage tank (501). A cooling pipe (504) is fixedly connected to one side of the storage tank (501). The cooling pipe (504) is arranged between the heat dissipation plates (9). A circulation pump (505) is arranged between the cooling pipe (504) and the storage tank (501).

4. The feeding device for hazardous waste incineration according to claim 1, wherein: The first irregular gear (63) includes a first half-wheel (631) and a second half-wheel (632). The radius of the first half-wheel (631) is smaller than that of the second half-wheel (632). The first half-wheel (631) and the second half-wheel (632) are concentric.

5. The feeding device for hazardous waste incineration according to claim 4, characterized in that: The second irregular gear (64) includes a third half-wheel (641) and a fourth half-wheel (642). The radius of the third half-wheel (641) is smaller than that of the fourth half-wheel (642). The third half-wheel (641) and the fourth half-wheel (642) are concentric. The third half-wheel (641) meshes with the second half-wheel (632), and the fourth half-wheel (642) meshes with the first half-wheel (631).

6. The feeding device for hazardous waste incineration according to claim 1, wherein: The second driving member (61) is fixedly installed on the chute (4), and the second kneading assembly (65) and the first kneading assembly (62) are symmetrically distributed inside the chute (4).

7. The feeding device for hazardous waste incineration according to claim 2, wherein: The connecting frame (621) is fixedly connected inside the chute (4) through the installation groove (8), the driving shaft (622) is fixedly connected to the output end of the second driving member (61), and the first irregular gear (63) is fixedly connected to the end of the driving shaft (622) far from the second driving member (61).

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