A plasma waste treatment system

Abstract

The present invention provides a plasma waste treatment system, including a furnace body extending vertically. Feed holes and slag discharge holes are respectively formed at the top and bottom of the furnace body. It is characterized in that a plasma torch, an air supply pipe, a power assembly, a water drainage cover and an exhaust pipe are sequentially distributed in the furnace body from bottom to top; the power assembly includes a pressure cylinder extending vertically. A piston head is hermetically and slidably connected in the pressure cylinder. A working medium gas is filled between the bottom end of the piston head and the pressure cylinder; a loading hopper and a water storage pool are arranged outside the pressure cylinder. The loading hopper is hermetically and slidably connected with the outer side wall of the pressure cylinder in the vertical direction. The water drainage cover covers the water storage pool. A drainage structure is arranged on the water storage pool. Both the loading hopper and the drainage structure are linked with the piston head. The present invention can not only dehydrate the waste before incineration, but also appropriately treat the water separated from the waste.

Description

Technical Field

[0001] The present invention relates to the technical field of garbage treatment, and particularly to a plasma garbage treatment system. Background Art

[0002] Some garbage may have one or more dangerous characteristics such as corrosiveness, toxicity, flammability, reactivity or infectivity. Existing garbage treatment methods include incineration, landfill, physical and chemical methods, etc. Due to its strong destructiveness to garbage and wide adaptability, incineration has become the most commonly used method for garbage treatment.

[0003] The incineration of garbage is usually carried out in a dedicated incinerator. However, the garbage may contain accumulated water. If the garbage containing accumulated water is directly fed into the incinerator, the accumulated water will consume the heat of the flame, resulting in incomplete incineration and thus affecting the treatment effect of the incinerator. Therefore, it is necessary to dehydrate the garbage before incineration to reduce the influence of accumulated water. In addition, since harmful substances may be mixed in the accumulated water, the accumulated water removed from the garbage also needs to be properly treated. However, the existing incinerators lack technical means to comprehensively solve the above problems. Summary of the Invention

[0004] To overcome the deficiencies of the prior art, the present invention provides a plasma garbage treatment system, which can not only dehydrate the garbage before incineration, but also properly treat the water removed from the garbage.

[0005] The present invention adopts the following technical solutions.

[0006] A plasma garbage treatment system includes a furnace body extending vertically. The top and bottom of the furnace body are respectively provided with a feed hole and a slag discharge hole. Inside the furnace body, a plasma torch, an air supply pipe, a power assembly, a water drainage cover and an exhaust pipe are sequentially distributed from bottom to top;

[0007] The power assembly includes a pressure cylinder extending vertically. A piston head is sealingly and slidably connected inside the pressure cylinder, and a working medium gas is filled between the bottom end of the piston head and the pressure cylinder;

[0008] A loading hopper and a water storage tank are arranged outside the pressure cylinder. The loading hopper is sealingly and slidably connected to the outer side wall of the pressure cylinder in the vertical direction. The water drainage cover covers the water storage tank. A drainage structure is arranged on the water storage tank. Both the loading hopper and the drainage structure are linked with the piston head;

[0009] When the piston head is at the bottom end of its stroke, a material feeding channel is formed between the loading hopper and the outer side wall of the pressure cylinder, and the drainage structure is in a closed state;

[0010] When the piston head is at the top of its stroke, a water storage cavity is formed between the carrying hopper and the outer side wall of the pressure cylinder. The drainage structure is in an open state, and the accumulated water in the water storage tank flows into the water storage cavity through the drainage structure.

[0011] Furthermore, the piston head is integrally connected with a vertically extending piston rod. The top end of the piston rod is integrally connected with a lifting cylinder through a first cross beam. The bottom end of the lifting cylinder is integrally connected with the carrying hopper. A plurality of water inlet holes are evenly distributed along the circumferential direction at the bottom of the lifting cylinder.

[0012] Furthermore, the drainage structure includes a drainage hole opened on the side wall of the water storage tank, and a valve plate slidably connected with the side wall of the water storage tank in the vertical direction. The valve plate can open or close the drainage hole. The valve plate is connected with a first elastic member, and the first elastic member makes the valve plate tend to close the drainage hole.

[0013] Furthermore, a driven dial block is provided on the valve plate, and the carrying hopper is integrally connected with a driving dial block adapted to the driven dial block.

[0014] Furthermore, a scraping ring is slidably sleeved on the outer side of the pressure cylinder, and the scraping ring is integrally connected with the carrying hopper through a rib plate.

[0015] Furthermore, the bottom end of the water draining cover is integrally connected with a water blocking cover covering the pressure cylinder.

[0016] Furthermore, the water draining cover is slidably connected with the furnace body in the vertical direction, and an impact head acting on the water draining cover is provided at the top end of the piston rod.

[0017] Furthermore, a grid hopper is provided below the water storage tank, and the grid hopper is integrally connected with the water draining cover.

[0018] Furthermore, a lifting seat is slidably connected with the inner side wall of the furnace body in the vertical direction. The lifting seat is integrally connected with the water draining cover through a second cross beam. The bottom end of the lifting seat is integrally connected with the grid hopper. A second elastic member is connected between the lifting seat and the furnace body.

[0019] The beneficial effects of the present invention are as follows:

[0020] During operation, garbage is fed into the furnace body through the feeding hole at the top of the furnace body. After entering the furnace body, the garbage rolls down along the water drainage cover. During this process, the accumulated water in the garbage drains out and flows into the storage pool below. The dehydrated garbage falls to the inner bottom of the furnace body and burns under the action of the plasma torch and the air supply pipe. At the same time, the heat generated by the burning of the garbage is transferred to the pressure cylinder under the drive of the flue gas. When the piston head is at the bottom end of its stroke, the drainage structure is in a closed state. The heat transferred by the flue gas makes the pressure cylinder heat up, and the working medium gas in the pressure cylinder expands due to heat, thus driving the piston head to move upward. When the piston head moves to the top end of its stroke, a water storage cavity is formed between the loading hopper and the outer wall of the pressure cylinder. At this time, the drainage structure opens, and the accumulated water in the storage pool flows into the water storage cavity through the drainage structure. The accumulated water flowing into the water storage cavity contacts the outer wall of the pressure cylinder, cooling the pressure cylinder. The working medium gas in the pressure cylinder contracts due to cooling, thus driving the piston head to move downward. During the process of the loading hopper moving downward with the piston head, the accumulated water in the loading hopper continuously absorbs the heat of the pressure cylinder and gradually evaporates, so that the harmful substances mixed in the accumulated water are gradually deposited. When the piston head moves to the bottom end of its stroke, the harmful substances deposited on the loading hopper fall into the inner bottom of the furnace body through the feeding channel. Finally, due to the loss of the cooling of the accumulated water, the working medium gas in the pressure cylinder is heated and expands again, driving the piston head to move upward. In this way, the accumulated water separated from the garbage can be properly processed in batches. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention 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, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 One of the overall structural schematic diagrams of this embodiment (at this time, the piston head is at the bottom end of its stroke);

[0023] Figure 2 is Figure 1 the enlarged view of part A of

[0024] Figure 3 Two of the overall structural schematic diagrams of this embodiment (at this time, the piston head is at the top end of its stroke);

[0025] Figure 4 is Figure 3 the enlarged view of part B of

[0026] Figure 5 the structural schematic diagram of the power assembly of this embodiment;

[0027] Figure 6 the structural schematic diagram of the loading hopper of this embodiment.

[0028] Description of reference numerals:

[0029] Furnace body 1, feed hole 11, slag discharge hole 12, plasma torch 13, air supply pipe 14, exhaust pipe 15, water drainage cover 16, water baffle 17, grille bucket 18,

[0030] Feeding channel 1a, water holding cavity 1b,

[0031] Power assembly 2, pressure cylinder 21, piston head 22, piston rod 23, first cross beam 24, lifting cylinder 25, impact head 26,

[0032] Water inlet hole 251,

[0033] Carrying bucket 3,

[0034] Water storage tank 4, drain hole 41,

[0035] Valve plate 51, first elastic member 52,

[0036] Driven dial block 61, driving dial block 62,

[0037] Scraping ring 71, rib plate 72,

[0038] Lifting seat 81, second cross beam 82, second elastic member 83. Detailed implementation manners

[0039] The accompanying drawings are only for illustrative purposes and should not be construed as limitations on this patent; for better illustration of this embodiment, some components in the drawings are omitted, enlarged or reduced, which do not represent the dimensions of the actual product.

[0040] For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The technical solutions of the present invention will be further described below with reference to the drawings and embodiments.

[0041] A plasma waste treatment system as shown in the accompanying drawings includes a furnace body 1 extending vertically. The top and bottom of the furnace body 1 are respectively provided with a feed hole 11 and a slag discharge hole 12. Inside the furnace body 1, a plasma torch 13, an air supply pipe 14, a power assembly 2, a water drainage cover 16 and an exhaust pipe 15 are sequentially arranged from bottom to top;

[0042] The power assembly 2 includes a pressure cylinder 21 extending vertically. A piston head 22 is sealingly and slidably connected inside the pressure cylinder 21. A working medium gas is filled between the bottom end of the piston head 22 and the pressure cylinder 21;

[0043] Outside the pressure cylinder 21, there are a loading hopper 3 and a water storage tank 4. The loading hopper 3 is hermetically and slidably connected to the outer side wall of the pressure cylinder 21 in the vertical direction. A water draining cover 16 covers the water storage tank 4. A drainage structure is provided on the water storage tank 4. Both the loading hopper 3 and the drainage structure are linked to the piston head 22;

[0044] When the piston head 22 is at the bottom end of its stroke, a material feeding channel 1a is formed between the loading hopper 3 and the outer side wall of the pressure cylinder, and the drainage structure is in a closed state;

[0045] When the piston head 22 is at the top end of its stroke, a water holding cavity 1b is formed between the loading hopper 3 and the outer side wall of the pressure cylinder 21. The drainage structure is in an open state, and the accumulated water in the water storage tank 4 flows into the water holding cavity 1b through the drainage structure.

[0046] During operation, garbage is put into the furnace body 1 from the feeding hole 11 at the top of the furnace body 1. After the garbage enters the furnace body 1, it rolls downward along the water draining cover 16. During this process, the accumulated water in the garbage escapes and flows into the lower water storage tank 4. The dehydrated garbage falls to the inner bottom of the furnace body 1 and burns under the action of the plasma torch 13 and the air supply pipe 14. At the same time, the heat generated by the burning of the garbage is transferred to the pressure cylinder 21 under the drive of the flue gas. When the piston head 22 is at the bottom end of its stroke, the drainage structure is in a closed state. The heat transferred by the flue gas makes the pressure cylinder 21 heat up, and the working medium gas in the pressure cylinder 21 expands due to heat, thereby driving the piston head 22 to move upward. When the piston head 22 moves to the top end of its stroke, a water holding cavity 1b is formed between the loading hopper 3 and the outer side wall of the pressure cylinder 21. At this time, the drainage structure opens, and the accumulated water in the water storage tank 4 flows into the water holding cavity 1b through the drainage structure. The accumulated water flowing into the water holding cavity 1b contacts the outer side wall of the pressure cylinder 21, cooling the pressure cylinder 21. The working medium gas in the pressure cylinder 21 contracts due to cooling, thereby driving the piston head 22 to move downward. During the process of the loading hopper 3 moving downward following the piston head 22, the accumulated water in the loading hopper 3 continuously absorbs the heat from the pressure cylinder 21 and thus gradually evaporates. The harmful substances (such as heavy metals, organic pollutants, salts, etc.) dissolved or suspended in the accumulated water cannot evaporate with the water, so they gradually deposit in the loading hopper 3. When the piston head 22 moves to the bottom end of its stroke, the harmful substances deposited on the loading hopper 3 fall into the inner bottom of the furnace body 1 through the material feeding channel 1a. Finally, due to the loss of the cooling of the accumulated water, the working medium gas in the pressure cylinder 21 is heated and expands again, driving the piston head 22 to move upward. In this way, a cyclic process can be realized to appropriately treat the accumulated water separated from the garbage in batches.

[0047] Preferably, the piston head 22 is integrally connected with a vertically extending piston rod 23. The top end of the piston rod 23 is integrally connected with a lifting cylinder 25 through a first cross beam 24. The bottom end of the lifting cylinder 25 is integrally connected with the loading hopper 3. A plurality of water inlet holes 251 are evenly distributed along the circumferential direction at the bottom of the lifting cylinder 25. When the piston head 22 is at the top of its stroke, the accumulated water flowing out from the drainage structure flows into the water storage cavity 1b through the water inlet holes 251.

[0048] Preferably, the drainage structure includes a drainage hole 41 formed on the side wall of the water storage tank 4, and a valve plate 51 slidably connected to the side wall of the water storage tank 4 in the vertical direction. The valve plate 51 can open or close the drainage hole 41. The valve plate 51 is connected with a first elastic member 52, and the first elastic member 52 makes the valve plate 51 tend to close the drainage hole 41. As an example, the first elastic member 52 is a spring.

[0049] Preferably, a driven dial block 61 is provided on the valve plate 51, and the loading hopper 3 is integrally connected with a driving dial block 62 adapted to the driven dial block 61. In this embodiment, the driving dial block 62 is provided on the lifting cylinder 25. During the upward movement of the piston head 22, the top end of the driving dial block 62 abuts against the bottom end of the driven dial block 61, thereby driving the valve plate 51 to move upward to open the drainage hole 41. After the accumulated water in the water storage tank 4 flows into the loading hopper 3, the accumulated water will cool the pressure cylinder 21, causing the working medium gas in the pressure cylinder 21 to contract due to cold, thereby driving the piston head 22 to move downward. In this way, the valve plate 51 moves downward under the action of the first elastic member 52 to close the drainage hole 41.

[0050] To prevent harmful substances in the accumulated water from accumulating on the outer side wall of the pressure cylinder 21 after the accumulated water in the loading hopper 3 evaporates. Preferably, a scraping ring 71 is slidably sleeved on the outer side of the pressure cylinder 21, and the scraping ring 71 is integrally connected with the loading hopper 3 through a rib plate 72. During the up and down movement of the piston head 22 driving the loading hopper 3 in the vertical direction, the scraping ring 71 will slide across the outer side wall of the pressure cylinder 21 to scrape off the harmful substances attached thereto.

[0051] To prevent the accumulated water from the garbage from falling into the pressure cylinder 21. Preferably, the bottom end of the water draining cover 16 is integrally connected with a water blocking cover 17 covering the pressure cylinder 21.

[0052] Preferably, the water drainage cover 16 is slidably connected to the furnace body 1 in the vertical direction, and an impact head 26 acting on the water drainage cover 16 is provided at the top end of the piston rod 23. When the piston head 22 moves to the top end of its stroke, the impact head 26 will impact the water baffle 17, causing the water drainage cover 16 to vibrate in the vertical direction. In this way, during the process of the garbage rolling down along the water baffle 17, the vibrating water drainage cover 16 not only helps to break the water film on the surface of the garbage, enabling the accumulated water to separate from the garbage more quickly, but also helps to disperse the garbage on the water drainage cover 16, increasing the contact area between the garbage and the water drainage cover 16. At the same time, it also helps to reduce the blockage of the water drainage cover 16, thereby improving the dehydration efficiency.

[0053] Preferably, a grille hopper 18 is provided below the water storage tank 4, and the grille hopper 18 is integrally connected to the water drainage cover 16. It can be understood that after the garbage falls from the water drainage cover 16, it will fall into the grille hopper 18. When the water drainage cover 16 is impacted by the impact head 26 and vibrates, this vibration will be transmitted to the grille hopper 18, causing the grille hopper 18 to vibrate as well. In this way, the garbage will jump during the process of rolling down along the grille hopper 18, thus being fully dispersed. This dispersion increases the contact area between the garbage and the flue gas in the furnace body 1, promotes the evaporation of the water on the garbage, improves the drying degree of the garbage, and further helps to enhance the incineration efficiency of the garbage.

[0054] Preferably, a lifting seat 81 is slidably connected to the inner side wall of the furnace body 1 in the vertical direction. The lifting seat 81 is integrally connected to the water drainage cover 16 through a second cross beam 82, and the bottom end of the lifting seat 81 is integrally connected to the grille hopper 18. A second elastic member 83 is connected between the lifting seat 81 and the furnace body 1. As an example, the second elastic member 83 is a spring piece.

[0055] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A plasma waste treatment system, comprising a vertically extending furnace body, wherein a feed hole and a slag discharge hole are respectively provided at the top and bottom of the furnace body, characterized in that: The furnace body is provided with a plasma torch, an air supply pipe, a power assembly, a drain hood and an exhaust pipe in sequence from bottom to top; The power assembly comprises a vertically extending pressure cylinder, a piston head is sealingly and slidably connected in the pressure cylinder, and a working medium gas is filled between the bottom end of the piston head and the pressure cylinder; A load-bearing bucket and a water storage tank are provided on the outside of the pressure cylinder. The load-bearing bucket is sealed and slidably connected with the outer wall of the pressure cylinder in the vertical direction. The drainage cover covers the water storage tank. A drainage structure is provided on the water storage tank. The load-bearing bucket and the drainage structure are both linked to the piston head. When the piston head is at the bottom of its stroke, a material discharge channel is formed between the load-bearing bucket and the outer side wall of the pressure cylinder, and the drainage structure is in a closed state; When the piston head is at the top of its stroke, a water-holding cavity is formed between the load-bearing bucket and the outer wall of the pressure cylinder, the drainage structure is in an open state, and the accumulated water in the water storage tank flows into the water-holding cavity through the drainage structure.

2. A plasma waste treatment system according to claim 1, characterized in that: The piston head is integrally connected to a vertically extending piston rod, the top end of the piston rod is integrally connected to a lifting cylinder via a first cross beam, the bottom end of the lifting cylinder is integrally connected to a carrying bucket, and the bottom of the lifting cylinder has a plurality of water inlet holes uniformly distributed along the circumferential direction.

3. A plasma waste treatment system according to claim 1, characterized in that: The drainage structure includes a drainage hole opened on the side wall of the water tank, and a valve plate slidably connected to the side wall of the water tank in the vertical direction, the valve plate can open or close the drainage hole, and the valve plate is connected to a first elastic member, which makes the valve plate tend to close the drainage hole.

4. A plasma waste treatment system according to claim 3, characterized in that: The valve plate is provided with a driven shifting block, and the carrying bucket is integrally connected with an active shifting block adapted to the driven shifting block.

5. A plasma waste treatment system according to claim 1, characterized in that: A scraper ring is slidably sleeved on the outer side of the pressure cylinder, and the scraper ring is connected to the carrying bucket through a rib plate to form a whole.

6. A plasma waste treatment system according to claim 1, characterized in that: The bottom end of the drainage cover is integrally connected with a water retaining cover covering the pressure cylinder.

7. A plasma waste treatment system according to claim 2, characterized in that: The drain hood is slidably connected to the furnace body along the vertical direction, and the top end of the piston rod is provided with an impact head acting on the drain hood.

8. A plasma waste treatment system according to claim 7, characterized in that: A grille bucket is provided below the water storage tank, and the grille bucket is integrally connected with the drain cover.

9. A plasma waste treatment system according to claim 8, characterized in that: The inner side wall of the furnace body is slidably connected with a lifting seat in the vertical direction. The lifting seat is integrally connected to the drain cover through a second crossbeam. The bottom end of the lifting seat is integrally connected to the grille bucket. A second elastic member is connected between the lifting seat and the furnace body.

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