High-efficiency heat recovery ash bucket for waste incinerator

Abstract

The utility model provides a kind of garbage incinerator high-efficiency heat recovery ash bucket, including upper mounting plate, outer ash bucket, inner ash bucket, lower mounting plate, water inlet pipe, drain pipe, wear plate, fixed assembly, ash removal mechanism, water baffle and turbulent mechanism, upper mounting plate and lower mounting plate between fixed outer ash bucket and inner ash bucket, wherein outer ash bucket and inner ash bucket between being provided with water baffle;Outer ash bucket outside is respectively fixed with water inlet pipe and drain pipe;Inner ash bucket inner wall is fixed with wear plate by fixed assembly, and the inner corner position of inner ash bucket is fixed with ash removal mechanism;Several turbulent mechanisms are fixed in the heat exchange cavity between outer ash bucket and inner ash bucket;The setting of the utility model wear plate can avoid the wear of inner ash bucket, the setting of water baffle and turbulent mechanism can adjust the heat exchange performance between liquid and inner ash bucket according to the temperature inside inner ash bucket;In addition, the setting of ash removal mechanism can remove the dust on the surface of wear plate, ensure the heat transfer performance of wear plate.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchange technology, and in particular relates to a high-efficiency heat recovery ash hopper for a waste incinerator. Background Technology

[0002] The heat recovery ash hopper of a waste incinerator is a key component of the waste incineration system. It is mainly used for waste guidance and forms a heat exchange chamber through a double-layer ash hopper structure. The water flow into the chamber absorbs the residual heat transferred by the inner ash hopper to achieve heat energy recovery (in the waste incinerator, the waste is burned at a high temperature of 850℃~1100℃, which produces high-temperature flue gas and fly ash. The temperature of this flue gas and fly ash is very high, and the highest temperature can reach about 600℃).

[0003] However, existing waste incinerator heat recovery ash hoppers have the following drawbacks in practical use: First, the heat exchange hoppers of existing waste incinerators lack an adaptive turbulence regulation mechanism. When the internal temperature of the hopper fluctuates, the water flow cannot be dynamically adjusted (at high temperatures, the water cannot absorb enough heat before being discharged, and at low temperatures, the same flow rate is maintained, resulting in energy waste). Second, the wear-resistant plates in the existing waste incinerator heat recovery hoppers are fixed with ordinary bolts, which are prone to loosening due to long-term impact from waste. This prevents the wear-resistant plates from fitting snugly against the inner wall of the hopper, thus losing their protective function. In addition, when the accumulated ash on the inner wall of the existing waste incinerator heat recovery hoppers needs to be cleaned, it requires manual periodic tapping or furnace shutdown for flushing.

[0004] Therefore, it is essential to invent a high-efficiency heat recovery ash hopper for waste incinerators. Utility Model Content

[0005] To address the above problems, this utility model proposes a high-efficiency heat recovery ash hopper for waste incinerators. The technical solution used is as follows: A high-efficiency heat recovery ash hopper for a waste incinerator includes an upper mounting plate, an outer ash hopper, an inner ash hopper, a lower mounting plate, a water inlet pipe, a drain pipe, wear-resistant plates, fixing components, an ash removal mechanism, a water guide plate, and a turbulence mechanism. The lower side of the upper mounting plate is welded to the outer and inner ash hoppers, with a heat exchange chamber between them. A spiral water guide plate is installed inside the heat exchange chamber, and is welded to both the outer and inner ash hoppers. The lower mounting plate is fixed to the lower ends of the outer and inner ash hoppers. The outer side of the outer ash hopper is fixed with a water inlet pipe and a drain pipe via joints, and both pipes communicate with the heat exchange chamber between them. The inner wall of the inner ash hopper is fixed with several wear-resistant plates via fixing components, and an ash removal mechanism is bolted to the inner corner of the inner ash hopper. Several turbulence mechanisms are fixed inside the heat exchange chamber between the outer and inner ash hoppers.

[0006] Furthermore, the fixing assembly includes a positioning sleeve, a bolt, and a nut. The positioning sleeve is fixed between the outer ash hopper and the inner ash hopper by a sealing mechanism. The bolt passes through the wear-resistant plate, the inner ash hopper, the positioning sleeve, and the outer ash hopper in sequence before being threadedly connected to the nut. A compression spring or spring washer is provided between the nut and the outer ash hopper. This arrangement not only strengthens the structural strength between the outer ash hopper and the inner ash hopper but also fixes the wear-resistant plate, preventing it from shifting under the impact of garbage.

[0007] Furthermore, the ash removal mechanism includes a diversion pipe, a jet pipe, an air inlet pipe, and an air outlet. The diversion pipe is fixed to the inner wall of the inner ash hopper by bolts, and the outer side of the diversion pipe is fixed with an air inlet pipe and several jet pipes by connectors. The jet pipes are fixed to the corresponding corner positions of the inner ash hopper by bolts. Several air outlets are evenly opened on the outer side of the jet pipes, and the air outlets face the corresponding wear-resistant plate positions. The interior of each air outlet is fixed with a dustproof net. This arrangement can clean the dust attached to the wear-resistant plate.

[0008] Furthermore, the turbulence mechanism includes a heat-conducting plate, a protective shell, a rotating column, a baffle, a limiting plate, and a spiral spring. The heat-conducting plate is embedded in the outer side of the inner ash hopper, and several protective shells are welded to the outer side of the heat-conducting plate. The rotating column is rotatably mounted inside the protective shell via a sealed bearing, and a spiral spring is fixed between the outer side of the rotating column and the inner wall of the protective shell. The other end of the rotating column is rotatably connected to the outer ash hopper via a sealed bearing, and a baffle is welded to the outer side of the rotating column. Two limiting plates are welded to the outer side of each protective shell. This arrangement allows the water flow on the guide plate to form a small turbulence when the temperature inside the inner ash hopper is within the normal range, and allows the water flow on the guide plate to form a large turbulence when the temperature inside the inner ash hopper is too high.

[0009] Furthermore, a temperature transmitter is fixed to the outer side of the outer ash hopper, with the detection head of the temperature transmitter located inside the ash hopper. With this configuration, the temperature transmitter can detect the temperature inside the ash hopper and display the temperature through its own display panel (when the temperature inside the ash hopper drops, the staff needs to clean the ash inside the ash hopper).

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The wear-resistant plate of this utility model can prevent wear on the inner wall of the inner ash hopper when guiding garbage, thereby improving the service life of the device; secondly, the setting of the fixing component can improve the fixing effect of the wear-resistant plate, so that the wear-resistant plate is in close contact with the inner wall of the inner ash hopper.

[0011] 2. The water guide plate and turbulence mechanism of this utility model enable the liquid between the outer and inner ash hoppers to flow in a spiral shape. When the temperature inside the inner ash hopper is within the normal range, the water flow on the water guide plate can form a small turbulence. When the temperature inside the inner ash hopper is too high, the water flow on the water guide plate can form a large turbulence (the greater the turbulence, the greater the Reynolds number, the higher the heat transfer coefficient, and thus enhance heat transfer), thereby improving the heat recovery efficiency.

[0012] 3. The ash removal mechanism of this utility model can connect the air inlet pipe to an external air source during use, and then spray the gas generated by the air source onto the wear-resistant plate to remove the accumulated ash on the surface of the wear-resistant plate, ensuring the heat transfer performance of the wear-resistant plate, and thus ensuring the heat recovery efficiency of the heat recovery ash hopper. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model without the outer ash hopper.

[0016] Figure 3 This is a structural schematic diagram of the fixing component of this utility model.

[0017] Figure 4 This is a schematic diagram of the ash removal mechanism of this utility model.

[0018] Figure 5 This is a utility model Figure 4 A magnified schematic diagram of the structure at position "A" in the middle.

[0019] Figure 6 This is a schematic diagram of the turbulence mechanism of this utility model.

[0020] Figure 7 This is a schematic diagram of the internal structure of the protective shell of this utility model.

[0021] Figure 8 This is a structural schematic diagram of the limiting plate and protective shell of this utility model.

[0022] In the picture: 1-Upper mounting plate, 2-Outer ash hopper, 3-Inner ash hopper, 4-Lower mounting plate, 5-Water inlet pipe, 6-Drain pipe, 7-Wear-resistant plate, 8-Fixing assembly, 81-Positioning sleeve, 82-Bolt, 83-Nut, 9-Ash removal mechanism, 91-Diverter pipe, 92-Air jet pipe, 93-Air inlet pipe, 94-Air outlet, 10-Water guide plate, 11-Turbulence mechanism, 111-Heat conduction plate, 112-Protective shell, 113-Rotating column, 114-Baffle, 115-Limiting plate, 116-Coiled spring, 12-Temperature transmitter. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Please see Figures 1 to 8 As shown, this utility model is a high-efficiency heat recovery ash hopper for a waste incinerator, including an upper mounting plate 1, an outer ash hopper 2, an inner ash hopper 3, a lower mounting plate 4, a water inlet pipe 5, a drain pipe 6, a wear-resistant plate 7, a fixing assembly 8, an ash removal mechanism 9, a water guide plate 10, and a turbulence mechanism 11. The outer ash hopper 2 and the inner ash hopper 3 are fixed to the lower side of the upper mounting plate 1 by welding, and a heat exchange chamber is provided between the outer ash hopper 2 and the inner ash hopper 3. A spiral water guide plate 10 is provided inside the heat exchange chamber, and the water guide plate 10 is fixed to the outer ash hopper 2 and the inner ash hopper 3 by welding. The lower ends of the outer ash hopper 2 and the inner ash hopper 3 are fixed with a lower mounting plate 4 by welding; the outer side of the outer ash hopper 2 is fixed with a water inlet pipe 5 and a drain pipe 6 by joints, and the interior of the water inlet pipe 5 and the drain pipe 6 are connected to the heat exchange chamber between the outer ash hopper 2 and the inner ash hopper 3; the inner wall of the inner ash hopper 3 is fixed with several wear-resistant plates 7 by fixing components 8. The wear-resistant plates 7 are made of high-chromium cast iron material, and the inner corner of the inner ash hopper 3 is fixed with a dust removal mechanism 9 by bolts; several turbulence mechanisms 11 are fixed inside the heat exchange chamber between the outer ash hopper 2 and the inner ash hopper 3.

[0026] Specifically, the fixing component 8 includes a positioning sleeve 81, a bolt 82, and a nut 83. The positioning sleeve 81 is fixed between the outer ash hopper 2 and the inner ash hopper 3 by welding. The bolt 82 passes through the wear-resistant plate 7, the inner ash hopper 3, the positioning sleeve 81, and the outer ash hopper 2 in sequence before being threadedly connected to the nut 83. A compression spring or spring washer is provided between the nut 83 and the outer ash hopper 2. The bolt 82 is an external hexagonal bolt or an internal hexagonal bolt. In use, the positioning sleeve 81 can not only strengthen the structural strength between the outer ash hopper 2 and the inner ash hopper 3, preventing deformation of the outer ash hopper 2 and the inner ash hopper 3 under the impact of water flow, but also prevent the liquid between the outer ash hopper 2 and the inner ash hopper 3 from flowing out along the bolt 82. Secondly, through the cooperation of the bolt 82 and the nut 83, the wear-resistant plate 7 can be fixed, thereby preventing the wear-resistant plate 7 from shifting under the impact of garbage.

[0027] Specifically, the ash removal mechanism 9 includes a diversion pipe 91, a jet pipe 92, an air inlet pipe 93, and an air outlet 94. The diversion pipe 91 is fixed to the inner wall of the inner ash hopper 3 by bolts, and the outer side of the diversion pipe 91 is fixed with an air inlet pipe 93 and several jet pipes 92 by connectors. The jet pipes 92 are fixed to the corresponding corner positions of the inner ash hopper 3 by bolts. Several air outlets 94 are evenly opened on the outer side of the jet pipes 92, and the air outlets 94 face the corresponding wear-resistant plates 7. The interior of each air outlet 94 is fixed with a dustproof net, which is made of woven metal wire. When in use, the air inlet pipe 93 is connected to an external air source. Then, with the cooperation of the air inlet pipe 93, the diversion pipe 91, the jet pipes 92, and the air outlets 94, the gas generated by the air source can be sprayed onto the wear-resistant plate 7 to remove the accumulated ash on the surface of the wear-resistant plate 7, ensuring the heat transfer performance of the wear-resistant plate 7, and thus ensuring the heat recovery efficiency of the heat recovery ash hopper.

[0028] Specifically, the turbulence mechanism 11 includes a heat-conducting plate 111, a protective shell 112, a rotating column 113, a baffle 114, a limiting plate 115, and a spiral spring 116. The heat-conducting plate 111 is embedded in the outer side of the inner ash hopper 3, and several protective shells 112 are fixed to the outer side of the heat-conducting plate 111 by welding. The rotating column 113 is rotatably mounted inside the protective shell 112 through a sealed bearing, and a spiral spring 116 is fixed between the outer side of the rotating column 113 and the inner wall of the protective shell 112. The other end of the rotating column 113 is rotatably connected to the outer ash hopper 2 through a sealed bearing, and a baffle 114 is fixed to the outer side of the rotating column 113 by welding. Two limiting plates 115 are fixed to the outer side of each protective shell 112 by welding. The heat-conducting plate 111 is made of aluminum bronze (QAl9-4), and the spiral spring 116 is made of Cu-Be alloy (beryllium bronze). Made of the same material, during use, the baffle 114 causes the water flow on the guide plate 10 to form turbulence, while the heat-conducting plate 111 transfers the temperature of the inner ash hopper 3 to the scroll spring 116. When the temperature inside the inner ash hopper 3 is within the normal range, the temperature does not affect the performance of the scroll spring 116. The elasticity of the scroll spring 116 can overcome the driving force of the water flow, causing the baffle 114 to be tilted, thus forming a small turbulence in the water flow on the guide plate 10. However, when the temperature inside the inner ash hopper 3 is too high, the temperature will affect the performance of the scroll spring 116, causing the elasticity of the scroll spring 116 to be unable to overcome the driving force of the water flow, causing the baffle 114 to be set vertically, thus forming a larger turbulence in the water flow on the guide plate 10 (the larger the turbulence, the larger the Reynolds number, and the higher the heat transfer coefficient, thus enhancing heat transfer).

[0029] Specifically, a temperature transmitter 12 is fixed on the outer side of the outer ash hopper 2. The detection head of the temperature transmitter 12 is located inside the ash hopper, and the temperature transmitter 12 is an integrated temperature transmitter of model SBWZ-2480. With this configuration, the temperature transmitter 12 can detect the temperature inside the ash hopper and display the temperature through its own display panel.

[0030] Please see Figure 1-8 As shown, this utility model is a high-efficiency heat recovery ash hopper for a waste incinerator. Its working principle is as follows: When in use, the upper mounting plate 1 and the lower mounting plate 4 are first connected to the corresponding equipment by bolts. Then, the waste is guided through the inner ash hopper 3. The wear-resistant plate 7 can prevent the waste from scratching the inner ash hopper 3. At the same time, the water inlet pipe 5 and the drain pipe 6 are connected to the corresponding external equipment. Then, water is introduced between the outer ash hopper 2 and the inner ash hopper 3 through the water inlet pipe 5. The water will flow along the water guide plate 10 and then be discharged through the drain pipe 6. When the water flows along the water guide plate 10, the water will absorb the heat energy generated by the waste. The turbulence mechanism 11 will make the water flow on the water guide plate 10 turbulent according to the temperature change inside the inner ash hopper 3.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high-efficiency heat recovery ash hopper for a waste incinerator, characterized in that: The system includes an upper mounting plate (1), an outer ash hopper (2), an inner ash hopper (3), a lower mounting plate (4), a water inlet pipe (5), a drain pipe (6), a wear-resistant plate (7), a fixing assembly (8), an ash removal mechanism (9), a water guide plate (10), and a turbulence mechanism (11). The lower side of the upper mounting plate (1) is fixed with the outer ash hopper (2) and the inner ash hopper (3), and a heat exchange chamber is provided between the outer ash hopper (2) and the inner ash hopper (3). A spiral water guide plate (10) is provided inside the heat exchange chamber, and the water guide plate (10) is fixed to the outer ash hopper (2) and the inner ash hopper (3) respectively. The lower ends of the outer ash hopper (2) and the inner ash hopper (3) are fixed with a lower mounting plate (4); the outer side of the outer ash hopper (2) is fixed with an inlet pipe (5) and a drain pipe (6), and the interior of the inlet pipe (5) and the drain pipe (6) are connected to the heat exchange chamber between the outer ash hopper (2) and the inner ash hopper (3); the inner wall of the inner ash hopper (3) is fixed with several wear-resistant plates (7) by a fixing component (8), and a dust removal mechanism (9) is fixed at the inner corner of the inner ash hopper (3); several turbulence mechanisms (11) are fixed inside the heat exchange chamber between the outer ash hopper (2) and the inner ash hopper (3).

2. The high-efficiency heat recovery ash hopper for a waste incinerator as described in claim 1, characterized in that: The fixing component (8) includes a positioning sleeve (81), a bolt (82) and a nut (83). The positioning sleeve (81) is sealed and fixed between the outer ash hopper (2) and the inner ash hopper (3). The bolt (82) passes through the wear-resistant plate (7), the inner ash hopper (3), the positioning sleeve (81), and the outer ash hopper (2) in sequence and is then threadedly fixed to the nut (83). A compression spring or spring washer is provided between the nut (83) and the outer ash hopper (2).

3. The high-efficiency heat recovery ash hopper for a waste incinerator as described in claim 1, characterized in that: The ash removal mechanism (9) includes a diversion pipe (91), a jet pipe (92), an air inlet pipe (93), and an air outlet (94). The diversion pipe (91) is fixed to the inner wall of the inner ash hopper (3), and the outer side of the diversion pipe (91) is fixed with an air inlet pipe (93) and several jet pipes (92), wherein the jet pipes (92) are respectively fixed at the corresponding corner positions of the inner ash hopper (3); several air outlets (94) are evenly opened on the outer side of the jet pipes (92), wherein the air outlets (94) are respectively facing the corresponding wear-resistant plate (7).

4. The high-efficiency heat recovery ash hopper for a waste incinerator as described in claim 3, characterized in that: The air vents (94) are all fitted with dustproof nets.

5. The high-efficiency heat recovery ash hopper for a waste incinerator as described in claim 1, characterized in that: The turbulence mechanism (11) includes a heat-conducting plate (111), a protective shell (112), a rotating column (113), a baffle (114), a limiting plate (115), and a spiral spring (116). The heat-conducting plate (111) is embedded in the outer side of the inner ash hopper (3), and a number of protective shells (112) are fixed on the outer side of the heat-conducting plate (111). The rotating column (113) is installed inside the protective shell (112) in a sealed rotational manner, and a spiral spring (116) is fixed between the outer side of the rotating column (113) and the inner wall of the protective shell (112). The other end of the rotating column (113) is sealed and rotatedly connected to the outer ash hopper (2), and a baffle (114) is fixed on the outer side of the rotating column (113). Two limiting plates (115) are fixed on the outer side of each protective shell (112).

6. The high-efficiency heat recovery ash hopper for a waste incinerator as described in claim 1, characterized in that: A temperature transmitter (12) is fixed on the outer side of the outer ash hopper (2), wherein the detection head of the temperature transmitter (12) is located inside the ash hopper.

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