Wear-resistant low-temperature economizer for high-dust-content flue gas

Abstract

The abrasion-resistant low-temperature economizer comprises an ash collecting structure and a heat exchange structure arranged on one side of the ash collecting structure, the ash collecting structure comprises an accumulation box and an ash collecting piece, the ash collecting piece is fixed in the accumulation box, the ash collecting piece comprises a bearing frame, and the bearing frame is arranged on the bearing frame. And the bearing frame is fixed in the accumulation box, a sliding plate is slidably connected into the bearing frame, a lead screw is in threaded connection with the interior of the sliding plate, and a motor is fixed to the end of the lead screw. Through the action of gravity, cigarette ash filtered out by the filter screen is gathered into particles and automatically falls on the bearing frame, after the cigarette ash is accumulated to a certain amount, the motor drives the lead screw to enable the sliding plate to enter the bearing frame so that the cigarette ash can fall downwards, after falling is completed, the sliding plate is reset, the electric telescopic rod is started, and the cigarette ash can be automatically taken out. Therefore, the cigarette ash is extruded by the extrusion filter plate, so that the cigarette ash is mixed together under extrusion, and secondary dust raising is avoided.

Description

Technical Field

[0001] This utility model relates to the field of economizer technology, and more specifically, to a wear-resistant low-temperature economizer for high dust-content flue gas. Background Technology

[0002] An economizer is a device that reduces the temperature of flue gas emissions from coal-fired boilers. It cools the flue gas produced during coal combustion, recovers the heat, and lowers the boiler's flue gas temperature, thereby achieving energy conservation and emission reduction. However, during the combustion process, coal-fired boilers produce a large amount of ash and slag. When this ash and slag deposit on the economizer, it forms a hard layer of deposits. These deposits rub against the flue gas, causing wear on the economizer surface.

[0003] A search revealed that Chinese patent CN 214700773 U discloses a wear-resistant low-temperature economizer for high-dust-content flue gas. The economizer includes a flue gas inlet, an ash collection bin at the bottom of the inlet, a collection frame on the front of the ash collection bin, a groove on the front of the collection frame, a first sealing strip on the outside of the collection frame, a housing at the bottom of the ash collection bin, a sealing door on the front of the housing, a handle on one side of the sealing door, a second sealing strip on the outside of the sealing door, a slider on one side of the collection frame, and a groove on the inside of the collection frame. This invention utilizes a wear-resistant outer end, bubble protrusions, a wear-resistant layer, a heat transfer layer, a first baffle, and a second baffle. The ash causes some wear on the arc of the serpentine heat exchange tube; the bubble protrusions reduce the impact force of the ash airflow; the wear-resistant layer protects the arc; the heat transfer layer protects the arc without consuming heat; and the first and second baffles reduce the space of the housing, preventing internal heat waste.

[0004] Although this patented technology can intercept, filter, and store soot, the intercepted soot needs to be cleaned frequently, otherwise it will clog the filter holes. Also, since soot is light, it is easy to generate secondary dust during cleaning. Utility Model Content

[0005] The purpose of this invention is to provide a wear-resistant, low-temperature economizer for high-dust-content flue gas. Through gravity, the flue dust filtered by the filter screen agglomerates into particles and automatically falls onto a support frame. When a certain amount of flue dust accumulates, a motor drives a lead screw, causing a sliding plate to enter the support frame, allowing the flue dust to fall downwards. After the dust has fallen, the sliding plate is reset, and an electric telescopic rod is activated. This squeezes the flue dust through the filter plate, causing it to bind together and preventing secondary dust generation.

[0006] This utility model adopts the following technical solution: a wear-resistant low-temperature economizer for high dust-content flue gas, comprising an ash collection structure and a heat exchange structure disposed on one side of the ash collection structure. The ash collection structure includes an accumulation box and an ash collection component. The ash collection component is fixed inside the accumulation box. The ash collection component includes a support frame, which is fixed inside the accumulation box. A sliding plate is slidably connected inside the support frame. A lead screw is threadedly connected inside the sliding plate. A motor is fixed to the end of the lead screw. The motor is fixed to one side of the accumulation box. An electric telescopic rod is fixed inside the support frame. A squeeze filter plate is fixed to the end of the electric telescopic rod.

[0007] In one embodiment of this utility model, a support leg is fixed to the bottom of the accumulation box, a hinge is fixed to one side of the accumulation box, a door block is fixed to one side of the hinge, a fixing plate is fixed to one side of the door block, and a fixing groove is provided at the bottom of the fixing plate.

[0008] In one embodiment of this utility model, a support bar is fixed inside the accumulation box, a filter frame is slidably connected to the top of the support bar, and a filter screen is fixed inside the filter frame.

[0009] In one embodiment of this utility model, a limiting member is fixed on one side of the accumulation box. The limiting member includes a fixing frame, which is fixed to one side of the accumulation box. A spring is fixed inside the fixing frame, and a plug rod is fixed to the end of the spring. The plug rod is slidably connected inside the fixing frame.

[0010] In one embodiment of this utility model, the heat exchange structure includes an air inlet and a heat exchanger. The air inlet is fixed inside the accumulation box, and the heat exchanger is fixed on the top of the accumulation box.

[0011] In one embodiment of the present invention, the air intake component includes an air intake pipe, which is fixed inside the accumulation box, and an air dissipation hole is provided on one side of the air intake pipe.

[0012] In one embodiment of this utility model, the heat exchanger includes a shell, the shell is fixed to the top of the accumulation box, an inlet pipe is fixed inside the shell, a serpentine tube is fixed to the end of the inlet pipe, an outlet pipe is fixed to the end of the serpentine tube, a phenolic coating is provided on one side of the serpentine tube, and fins are fixed to one side of the serpentine tube.

[0013] The beneficial effects of this utility model are:

[0014] Under the influence of gravity, the soot filtered by the filter screen agglomerates and falls automatically onto the support frame. When a certain amount of soot accumulates, the motor drives the screw to move the slide plate into the support frame, causing the soot to fall downwards. After the soot has fallen, the slide plate is reset, and the electric telescopic rod is activated. This squeezes the soot through the filter plate, causing the soot to mix together and preventing secondary dust generation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the limiting component in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the fin in this utility model.

[0020] In the picture:

[0021] 100 - Ash collection structure; 110 - Collection box; 111 - Support leg; 112 - Hinge; 113 - Door stop; 114 - Fixing plate; 115 - Fixing groove; 116 - Support bar; 117 - Filter frame; 118 - Filter screen;

[0022] 120 - Limiting component; 121 - Fixing bracket; 122 - Spring; 123 - Insert rod;

[0023] 130 - Ash collection component; 131 - Support frame; 132 - Slide plate; 133 - Lead screw; 134 - Motor; 135 - Electric telescopic rod; 136 - Extrusion filter plate;

[0024] 200-Heat exchange structure; 210-Air inlet; 211-Air inlet pipe; 212-Air outlet; 220-Heat exchange component; 221-Outer shell; 222-Water inlet pipe; 223-Serpentine pipe; 224-Water outlet pipe; 225-Phenolic coating; 226-Fins. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example

[0027] Please see Figure 1-4 This utility model provides a technical solution: a wear-resistant low-temperature economizer for high-dust-content flue gas, including an ash collection structure 100 and a heat exchange structure 200 disposed on one side of the ash collection structure 100. The ash collection structure 100 includes an accumulation box 110 and an ash collection component 130. The ash collection component 130 is fixed inside the accumulation box 110. The ash collection component 130 includes a support frame 131, which serves to divide the flue ash, store the slide plate 132, and protect the electric telescopic rod 135. The support frame 131 is fixed inside the accumulation box 110, and the slide plate 132 is slidably connected inside the support frame 131. The slide plate 132 and the support frame 131 are connected to each other. 1. The collection box 110 is divided into upper and lower areas. The slide plate 132 is internally threaded with a lead screw 133. The lead screw 133 can drive the slide plate 132 to move by rotating. The end of the lead screw 133 is fixed with a motor 134, which is fixed to one side of the collection box 110. The support frame 131 is internally fixed with an electric telescopic rod 135. The end of the electric telescopic rod 135 is fixed with a squeezing filter plate 136. The squeezing filter plate 136 has many small holes. These small holes allow air to be discharged when squeezing the ash. When the electric telescopic rod 135 is retracted, the air will pass through the small holes, thereby blowing away the ash blocking the small holes.

[0028] Please see Figure 1-3The bottom of the collection box 110 is fixed with a support leg 111. A hinge 112 is fixed to one side of the collection box 110, which serves as a transition connection. A blocking door 113 is fixed to one side of the hinge 112, which allows a closed space to be formed when the ash is squeezed. A fixing plate 114 is fixed to one side of the blocking door 113. The end of the fixing plate 114 has a chamfer, and a fixing groove 115 is opened at the bottom of the fixing plate 114. A support bar 116 is fixed inside the collection box 110, which supports the filter frame 117. The top of the support bar 116 is slidably connected to the filter frame 117, and a filter screen 118 is fixed inside the filter frame 117. The filter frame 117 can be pulled out from the collection box 110 by pulling the handle, so that the filter screen 118 can be cleaned. A limiting member 120 is fixed on one side of the collection box 110. The limiting member 120 includes a fixing frame 121, which is fixed to one side of the collection box 110. A spring 122 is fixed inside the fixing frame 121. The spring 122 can make the insertion rod 123 insert into the fixing groove 115 by elastic force. The insertion rod 123 is fixed at the end of the spring 122. The insertion rod 123 can restrict the movement of the fixing plate 114, so that the blocking door 113 will not be opened when the ash is squeezed. The insertion rod 123 is slidably connected inside the fixing frame 121.

[0029] Please see Figure 1-2 and Figure 4 The heat exchange structure 200 includes an air inlet 210 and a heat exchanger 220. The air inlet 210 is fixed inside the accumulation box 110, and the heat exchanger 220 is fixed to the top of the accumulation box 110. The air inlet 210 includes an air inlet pipe 211, which is fixed inside the accumulation box 110. A diffuser hole 212 is provided on one side of the air inlet pipe 211, which can evenly discharge the flue gas inside the accumulation box 110. The heat exchanger 220 includes a housing 221, which is fixed to the top of the accumulation box 110. An inlet pipe 222 is fixed inside the outer casing 221. A serpentine pipe 223 is fixed at the end of the inlet pipe 222. The serpentine pipe 223 allows the water flowing through it to remain in the limited space for a longer time. An outlet pipe 224 is fixed at the end of the serpentine pipe 223. A phenolic coating 225 is provided on one side of the serpentine pipe 223. The phenolic coating 225 can play a role in wear resistance and high temperature resistance. A fin 226 is fixed on one side of the serpentine pipe 223. The fin 226 can better transfer heat by having a large contact area with the flue gas.

[0030] The working process of this utility model:

[0031] In operation, flue gas is transported through the intake pipe 211 and then dispersed into the collection box 110 through the diffuser 212. The flue gas then rises and passes through the filter screen 118, where it is filtered to remove soot. The flue gas then passes through the heat exchanger 220, where it comes into large contact with the fins 226, allowing the flue gas temperature to be transferred to the fins. The fins then transfer the heat to the serpentine tube 223, thus completing the heat transfer. As flue gas continues to be transported, a certain amount of soot accumulates at the bottom of the filter screen 118. When the weight of the accumulated soot is insufficient to support the airflow, gravity will cause it to settle. The ashes fall onto the support frame 131. As more and more ashes fall onto the support frame 131, the motor 134 can be started, causing the lead screw 133 to rotate, thereby causing the slide plate 132 to retract into the support frame 131. At this time, the ashes will fall down. After a certain amount of ashes have fallen, the slide plate 132 is reset, and then the electric telescopic rod 135 is started, causing the electric telescopic rod 135 to squeeze the ashes through the squeezing filter plate 136, thereby making the ashes mix together and not easily disperse. At this time, the insertion rod 123 is pulled down, causing the insertion rod 123 to be pulled out from the fixed groove 115. Then, the stop door 113 can be rotated to remove the squeezed ashes.

[0032] It should be noted that the specific model and specifications of motor 134 need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0033] The power supply and principle of motor 134 are clear to those skilled in the art and will not be described in detail here.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A wear-resistant low-temperature economizer for high-dust-content flue gas, comprising an ash collection structure (100) and a heat exchange structure (200) disposed on one side of the ash collection structure (100), characterized in that, The ash collection structure (100) includes a collection box (110) and an ash collection component (130). The ash collection component (130) is fixed inside the collection box (110). The ash collection component (130) includes a support frame (131). The support frame (131) is fixed inside the collection box (110). A sliding plate (132) is slidably connected inside the support frame (131). A lead screw (133) is threaded inside the sliding plate (132). A motor (134) is fixed at the end of the lead screw (133). The motor (134) is fixed on one side of the collection box (110). An electric telescopic rod (135) is fixed inside the support frame (131). A squeeze filter plate (136) is fixed at the end of the electric telescopic rod (135). The bottom of the accumulation box (110) is fixed with a support leg (111), a hinge (112) is fixed on one side of the accumulation box (110), a door block (113) is fixed on one side of the hinge (112), a fixing plate (114) is fixed on one side of the door block (113), and a fixing groove (115) is provided at the bottom of the fixing plate (114). The accumulation box (110) has a support bar (116) fixed inside, and a filter frame (117) is slidably connected to the top of the support bar (116). A filter screen (118) is fixed inside the filter frame (117). A limiting member (120) is fixed on one side of the accumulation box (110). The limiting member (120) includes a fixing frame (121). The fixing frame (121) is fixed on one side of the accumulation box (110). A spring (122) is fixed inside the fixing frame (121). A plug rod (123) is fixed at the end of the spring (122). The plug rod (123) is slidably connected inside the fixing frame (121).

2. The wear-resistant low-temperature economizer for high-dust-content flue gas according to claim 1, characterized in that, The heat exchange structure (200) includes an air inlet (210) and a heat exchanger (220). The air inlet (210) is fixed inside the accumulation box (110), and the heat exchanger (220) is fixed on the top of the accumulation box (110).

3. The wear-resistant low-temperature economizer for high-dust-content flue gas according to claim 1, characterized in that, The air intake component (210) includes an air intake pipe (211), which is fixed inside the storage box (110), and an air vent (212) is provided on one side of the air intake pipe (211).

4. The wear-resistant low-temperature economizer for high-dust-content flue gas according to claim 2, characterized in that, The heat exchanger (220) includes a shell (221) fixed to the top of the accumulation box (110). A water inlet pipe (222) is fixed inside the shell (221). A serpentine tube (223) is fixed to the end of the water inlet pipe (222). A water outlet pipe (224) is fixed to the end of the serpentine tube (223). A phenolic coating (225) is provided on one side of the serpentine tube (223). A fin (226) is fixed to one side of the serpentine tube (223).

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