Steam boiler with automatic bottom ash cleaning structure

Abstract

The present application relates to the field of steam boiler, it discloses a kind of steam boiler with bottom automatic dust cleaning structure, including hearth component and boiler drum, hearth component includes upper hearth body, the upper open end of upper hearth body is extended with side support towards up along the width direction both sides, boiler drum is erected between two side supports, side support is provided with feeding assembly, side support is provided with installation port along length direction both sides, installation port is respectively close to the length direction both sides of upper hearth body along length direction both sides, sealing element is arranged in installation port, feeding assembly includes slide and linear module that slide is moved, the moving direction of slide is parallel to the length direction of upper hearth body, feeding pipe is provided on slide, the upper side of one end of feeding pipe is provided with connector, the other end is inserted into upper hearth body by passing sealing element, the upper end of connector is provided with hopper, feeding auger is provided in feeding pipe, the input end of feeding auger is extended from feeding pipe and is power-connected with feeding motor.

Description

Technical Field

[0001] This invention relates to the field of steam boiler technology, specifically to the field of steam boiler ash removal, and particularly to a steam boiler with a bottom automatic ash removal structure. Background Technology

[0002] A steam boiler is a widely used thermal energy device. Simply put, its core function is to heat water into steam with a certain pressure and temperature to meet various needs such as industrial production and power plant power generation. Its working process can be simply understood as "boiling water".

[0003] A steam boiler consists of a metal container (boiler) that holds water and withstands pressure, and a space (furnace) where fuel is burned to release heat. When fuel burns in the furnace, ash and slag are inevitably produced. These ash and slag are the residue left after fuel combustion and need to be discharged in a timely manner to avoid affecting the combustion of subsequent fuels.

[0004] In existing technologies, several slits, commonly known as ash drop slits, are typically created at the bottom of the furnace to allow small particles of ash produced during combustion to fall through. However, in actual use, large amounts of fuel (such as coal) are usually poured into the furnace. This method not only suffers from incomplete combustion but also from the inconvenience of ash removal, which affects fuel combustion. Specifically, the ash produced by the combustion of the upper layer of fuel is difficult to fall through the ash drop slits and leave the furnace due to the obstruction of the lower layer of fuel. Therefore, the upper layer of ash affects the completeness of combustion of the lower layer of fuel, resulting in incomplete combustion and inconvenient ash removal.

[0005] Based on the above problems, the present invention proposes a steam boiler with a bottom automatic ash removal structure. Summary of the Invention

[0006] To address the problems of incomplete fuel combustion and inconvenient ash removal in the furnace of steam boilers mentioned above, this invention provides a steam boiler with an automatic bottom ash removal structure.

[0007] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows.

[0008] A steam boiler with a bottom automatic ash removal structure includes a furnace component and a boiler drum placed on top of the furnace component. The furnace component includes a furnace body, and the furnace body includes an upper chamber.

[0009] The upper open end of the upper body has side supports extending upwards on both sides along the width direction. The pot drum is mounted between the two side supports, and a feeding assembly is provided on the side supports.

[0010] The side support has an installation port, with the two sides of the installation port along the length direction close to the two sides of the upper chamber along the length direction.

[0011] The mounting port is equipped with a seal. The feeding assembly includes a slide and a linear module that drives the slide to move. The sliding direction is parallel to the length direction of the upper chamber. A feeding pipe is provided on the slide. A connector is provided on the upper side of one end of the feeding pipe, and the other end passes through the seal and extends into the upper chamber. A hopper is provided at the upper end of the connector. A feeding auger is provided inside the feeding pipe. The input end of the feeding auger extends out of the feeding pipe and is powered by a feeding motor.

[0012] As a further improvement and optimization of the present invention, the sealing element includes a metal elastic sheet and a rotating shaft arranged vertically along the axis. There are two rotating shafts, which are respectively located on both sides of the mounting port. One end of the metal elastic sheet is wound around one rotating shaft and the other end is connected to the other rotating shaft. The surface of the metal elastic sheet is provided with a connecting hole, through which the feeding tube passes.

[0013] As a further improvement and optimization of the present invention, the upper chamber is a triangular prism shape with the center line arranged horizontally. The distance between the two sides of the upper chamber along the width direction of the upper open end is vertical and increases from bottom to top. An inclined plate is provided on the opposite side of the two sides of the upper chamber along the width direction of the upper open end, and the inclined plate is close to the bottom of the upper chamber. The distance between the two inclined plates is vertical and decreases from bottom to top. The internal area of ​​the upper chamber is divided into a fuel area and a ventilation area by the two inclined plates. The fuel area is located above the inclined plate, and the ventilation area is located below the fuel area.

[0014] Several ash drop slits are arrayed on both sides of the upper open end of the upper body, and the ash drop slits are located in the fuel zone and close to the inclined plate.

[0015] As a further improvement and optimization of the present invention, the furnace body also includes a fixed base and a lower furnace body, wherein the lower furnace body is disposed on the fixed base and located below the upper furnace body;

[0016] The bottom of the lower chamber is provided with a notch, and a slag conveying component is provided at the lower opening of the notch.

[0017] As a further improvement and optimization of the present invention, the slag conveying assembly includes a slag conveying pipe disposed at the lower opening of the notch, a slag conveying auger disposed inside the slag conveying pipe, the input end of the slag conveying auger extending out of the slag conveying pipe and being poweredly connected to a slag conveying motor, and a slag discharge nozzle disposed downward at the output pipe of the slag conveying pipe.

[0018] As a further improvement and optimization of the present invention, an inner side plate extends from the bottom of the upper chamber, and an outer side plate extends from the upper open end of the lower chamber. The outer side plate is located on the side of the inner side plate away from the center line of the upper chamber and the outer side plate is in contact with the inner side plate. Multiple outer side plates and inner side plates are provided correspondingly, and multiple outer side plates cooperate with the inner side plates to achieve the sealing of the upper open end of the lower chamber. This prevents some ash from splashing up and overflowing from the upper open end of the lower chamber during the process of ash and slag falling into the lower chamber, thus polluting the surrounding environment.

[0019] As a further improvement and optimization of the present invention, both of the ventilation zones along the length direction are provided with air holes, and the openings of the air holes are extended with side protrusions. The ends of the side protrusions are connected to blowers, and the surface of the inclined plate is provided with a number of ventilation holes.

[0020] As a further improvement and optimization of the present invention, a bracket is provided on the opposite side of the two side supports, and a guide post is provided on the fixed base. The guide post and the bracket form a sliding connection, and two springs are respectively located on the upper and lower sides of the connection between the guide post and the bracket. An external step is provided at the upper end of the guide post, and a vibrator is provided on the bracket. The vibrator can drive the bracket, the side supports and the upper chamber to vibrate, so that the ash produced by combustion can fall more smoothly through the ash drop joint.

[0021] As a further improvement and optimization of the present invention, a slag removal port is provided on one side of the fuel zone of the upper chamber, and a sealing plate can be detachably installed at the opening of the slag removal port.

[0022] As a further improvement and optimization of the present invention, the linear module includes a rack mounted on a fixed base and a displacement motor mounted on a slide. The output end of the displacement motor is provided with a gear that meshes with the rack. The extension direction of the rack is parallel to the movement direction of the slide.

[0023] Compared with the prior art, the beneficial effects of this invention are as follows:

[0024] In this case, fuel is fed into the upper chamber through the feeding assembly. Specifically, the linear module drives the slide to move, thereby causing the hopper, feeding pipe and feeding auger to reciprocate along the length of the upper chamber. While reciprocating, the feeding auger pulls the fuel in the hopper to be transported to the fuel area of ​​the upper chamber. In other words, the fuel can be evenly spread in the fuel area.

[0025] Meanwhile, the ash produced by combustion falls into the lower chamber through the ash drop joints and is then pulled away by the slag conveyor. Furthermore, the vibrator is activated periodically to facilitate the ash falling through the ash drop joints more smoothly.

[0026] In summary, in this case, the feeding component continuously and evenly draws fuel into the fuel zone and incorporates it into the combustion process. Combined with the ash removal component continuously drawing ash away, the two work together to promote more complete fuel combustion. The ash produced during combustion can fall away in a timely manner through the ash drop joints. Therefore, the problems of incomplete fuel combustion and inconvenient ash removal in the furnace of steam boilers mentioned in the background technology are solved. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the present invention;

[0028] Figure 2 This is an exploded view of the furnace components and boiler drum;

[0029] Figure 3 This is a structural schematic diagram of the furnace components;

[0030] Figure 4 Sectional view of furnace components Figure 1 ;

[0031] Figure 5 Sectional view of furnace components Figure 2 ;

[0032] Figure 6 This is a schematic diagram of the furnace body.

[0033] Figure 7 This is a schematic diagram of the sealing element and the feeding assembly;

[0034] Figure 8 This is a cross-sectional view of the feeding assembly.

[0035] The labels in the attached diagram are:

[0036] 100. Furnace components; 101. Boiler drum; 102. Furnace body; 1021. Fixed base; 1022. Lower furnace body; 1023. Upper furnace body; 1024. Outer side plate; 1025. Inner side plate; 1026. Guide column; 1027. Spring; 1028. Vibrator; 1029. Side support; 103. Feeding assembly; 1031. Feeding pipe; 1032. Hopper ; 1033, feeding auger; 1034, feeding motor; 104, slag conveying assembly; 1041, slag conveying auger; 1042, slag conveying motor; 1043, slag discharge nozzle; 105, blower; 106, ash drop joint; 107, vent hole; 108, side protrusion pipe; 109, slag cleaning port; 110, sealing plate; 111, mounting port; 112, sealing element; 113, connection hole. Detailed Implementation

[0037] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0038] Reference Figures 1-8 A steam boiler with a bottom automatic ash removal structure includes a furnace component 100 and a boiler drum 101 placed on top of the furnace component 100.

[0039] The furnace component 100 includes the furnace body 102.

[0040] Specifically, refer to Figure 5 and Figure 6 The furnace body 102 includes a fixed base 1021, a lower furnace body 1022 and an upper furnace body 1023.

[0041] The upper chamber 1023 is a triangular prism shape with its center line arranged horizontally, and the upper side of the upper chamber 1023 is open. The distance between the two sides of the upper chamber 1023 along the width direction of the upper open end is vertical and increases from bottom to top. An inclined plate is provided on the opposite side of the two sides of the upper chamber 1023 along the width direction of the upper open end, and the inclined plate is close to the bottom of the upper chamber 1023. The distance between the two inclined plates is vertical and decreases from bottom to top.

[0042] The internal area of ​​the upper chamber 1023 is divided into a fuel zone and a ventilation zone by two ramps. The fuel zone is located above the ramps, and the ventilation zone is located below the fuel zone.

[0043] Furthermore, the ventilation zone is provided with two air holes along its length, and a side protrusion pipe 108 extends from the opening of the air hole. The end of the side protrusion pipe 108 is connected to a blower 105. The surface of the inclined plate is provided with a number of ventilation holes 107. Air is drawn into the ventilation zone by the blower 105 and flows to the fuel zone through the ventilation holes 107, providing air to assist the combustion of fuel in the fuel zone.

[0044] The upper chamber 1023 has several ash drop slits 106 arranged in an array on both sides along the width direction of the upper open end. The ash drop slits 106 are located in the fuel zone and close to the inclined plate.

[0045] The upper open end of the upper body 1023 has side supports 1029 extending upward on both sides along the width direction, and the boiler drum 101 is mounted between the two side supports 1029.

[0046] Each of the two side supports 1029 is equipped with a bracket on its opposite side. A guide post 1026 is provided on the fixed base 1021. The guide post 1026 is slidably connected to the bracket, and two springs 1027 are respectively located on the upper and lower sides of the connection between the guide post 1026 and the bracket. An external step is provided at the upper end of the guide post 1026 for the installation of the springs 1027.

[0047] The support is equipped with a vibrator 1028, which can drive the support, side support 1029 and upper chamber 1023 to vibrate, so that the ash produced by combustion can fall more smoothly through the ash drop joint 106.

[0048] The lower chamber 1022 is mounted on the fixed base 1021 and located below the upper chamber 1023, and is used to receive ash and slag falling through the ash drop joint 106.

[0049] Furthermore, a notch is provided at the bottom of the lower chamber 1022, and a slag conveying assembly 104 is provided at the lower opening of the notch for conveying ash and slag out. Specifically, the slag conveying assembly 104 includes a slag conveying pipe provided at the lower opening of the notch, a slag conveying auger 1041 is provided inside the slag conveying pipe, the input end of the slag conveying auger 1041 extends out of the slag conveying pipe and is poweredly connected to a slag conveying motor 1042, and a slag discharge nozzle 1043 is provided downward at the output pipe of the slag conveying pipe. The two sides of the lower chamber 1022 are arranged at an inclination and the distance between them is vertical and increases from bottom to top. Therefore, under the guidance of the inclination side, the ash and slag fall into the slag conveying pipe and are discharged through the slag discharge nozzle 1043 under the traction of the slag conveying auger 1041.

[0050] Furthermore, an inner plate 1025 extends from the bottom of the upper chamber 1023, and an outer plate 1024 extends from the upper open end of the lower chamber 1022. The outer plate 1024 is located on the side of the inner plate 1025 away from the center line of the upper chamber 1023, and the outer plate 1024 and the inner plate 1025 are in contact with each other. Multiple outer plates 1024 and inner plates 1025 are correspondingly provided, and multiple outer plates 1024 cooperate with the inner plate 1025 to achieve the sealing of the upper open end of the lower chamber 1022. The advantage is that it prevents some ash from splashing up during the process of ash falling into the lower chamber 1022 and overflowing from the upper open end of the lower chamber 1022, thus polluting the surrounding environment.

[0051] Furthermore, an igniter is installed on one side of the fuel area to ignite the fuel. The igniter is a technology that can be implemented with existing technology and will not be described in detail.

[0052] Furthermore, the ash produced after fuel combustion, under vibration, can fall through the ash drop slit 106 into the lower chamber 1022 and be guided out. However, if the fuel contains large fixed impurities, such as metal objects, these impurities will remain in the upper chamber 1023 after combustion because they cannot leave through the ash drop slit 106. To solve this problem, refer to... Figure 6 A slag removal port 109 is provided on one side of the fuel area of ​​the upper chamber 1023, and a sealing plate 110 can be detachably installed at the opening of the slag removal port 109. The advantage is that large solid impurities in the fuel area can be cleaned by periodically opening the sealing plate 110 and using tools such as long hooks.

[0053] The side support 1029 is also provided with a feeding assembly 103, which is used to transport fuel into the fuel zone and promote the fuel to be evenly spread at the bottom of the fuel zone.

[0054] Specifically, refer to Figures 6-8 The side support 1029 has an installation port 111, and the two sides of the installation port 111 along the length direction are respectively close to the two sides of the fuel area along the length direction.

[0055] A sealing element 112 is provided inside the mounting port 111. The sealing element 112 includes a metal elastic sheet and a rotating shaft arranged vertically with the axis. There are two rotating shafts, which are respectively located on both sides of the mounting port 111. One end of the metal elastic sheet is wound around one rotating shaft and the other end is connected to the other rotating shaft. The mounting port 111 can be sealed by the metal elastic sheet. The metal elastic sheet is preferably made of high-performance stainless steel or spring steel, such as a clockwork, which can be transferred from one rotating shaft to another, similar to a conveyor belt.

[0056] A connecting hole 113 is provided through the surface of the metal elastic sheet.

[0057] The feeding assembly 103 includes a slide mounted on a fixed base 1021 and a linear module for driving the slide to move. The direction of movement of the slide is parallel to the length direction of the upper chamber 1023. The linear module can adopt existing lead screw linear movement technology or rack and pinion linear movement technology, for example, a rack is provided on the fixed base 1021, a displacement motor is provided on the slide, and a gear is provided at the output end of the displacement motor. The gear meshes with the rack, and the extension direction of the rack is parallel to the direction of movement of the slide. The displacement motor drives the gear to rotate, and with the cooperation of the gear and the rack, the slide moves.

[0058] A feeding tube 1031 is provided on the slide. The axis of the feeding tube 1031 is perpendicular to the metal elastic sheet. A connector is provided on the upper side of one end of the feeding tube 1031, and the other end passes through the connecting hole 113 and extends into the upper chamber 1023. The feeding tube 1031 is fixed to the connecting hole 113. A hopper 1032 is provided at the upper end of the connector. A feeding auger 1033 is provided inside the feeding tube 1031. The input end of the feeding auger 1033 extends out of the feeding tube 1031 and is poweredly connected to the feeding motor 1034.

[0059] Working principle of the invention:

[0060] In this case, fuel is fed into the upper chamber 1023 by the feeding assembly 103. Specifically, the linear module drives the slide to move, thereby causing the hopper 1032, the feeding pipe 1031, and the feeding auger 1033 to reciprocate along the length of the upper chamber 1023. While reciprocating, the feeding auger 1033 pulls the fuel in the hopper 1032 to be transported to the fuel zone of the upper chamber 1023. In other words, the fuel can be evenly spread in the fuel zone. The combustion of the fuel is achievable by existing technology and will not be described in detail.

[0061] Meanwhile, the ash produced by combustion falls into the lower chamber 1022 through the ash drop joint 106 and is pulled away by the slag conveying auger 1041. Furthermore, the vibrator 1028 is activated periodically to facilitate the ash to fall more smoothly through the ash drop joint 106.

[0062] In other words, the technical advantage of this case is that the feeding component 103 pulls the fuel continuously and evenly into the fuel zone and adds it to the combustion process. In conjunction with the ash removal component 104, the ash is continuously pulled away. The combination of the two can promote more complete combustion of fuel and the ash produced by combustion can fall away in time through the ash drop gap. Therefore, it solves the problems of incomplete fuel combustion and inconvenient ash removal in the furnace of steam boilers mentioned in the background technology.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A steam boiler with a bottom automatic ash removal structure, comprising a furnace component (100) and a boiler drum (101) placed on top of the furnace component (100), characterized in that, The furnace component (100) includes a furnace body (102), and the furnace body (102) includes an upper furnace body (1023). The upper open end of the upper body (1023) has side supports (1029) extending upward on both sides along the width direction. The pot drum (101) is mounted between the two side supports (1029). The side supports (1029) are provided with feeding components (103). The side support (1029) has an installation port (111), and the two sides of the installation port (111) along the length direction are close to the two sides of the upper body (1023) along the length direction. The mounting port (111) is provided with a sealing element (112). The feeding assembly (103) includes a slide and a linear module that drives the slide to move. The moving direction of the slide is parallel to the length direction of the upper chamber (1023). The slide is provided with a feeding pipe (1031). One end of the feeding pipe (1031) is provided with a connector on its upper side, and the other end passes through the sealing element (112) and extends into the upper chamber (1023). The upper end of the connector is provided with a hopper (1032). The feeding pipe (1031) is provided with a feeding auger (1033). The input end of the feeding auger (1033) extends out of the feeding pipe (1031) and is poweredly connected to a feeding motor (1034).

2. A steam boiler with a bottom automatic ash removal structure according to claim 1, characterized in that, The seal (112) includes a metal elastic sheet and a rotating shaft arranged vertically with the axis. There are two rotating shafts, which are located on both sides of the mounting port (111). One end of the metal elastic sheet is wrapped around one rotating shaft and the other end is connected to the other rotating shaft. The surface of the metal elastic sheet is provided with a connecting hole (113), and the feeding pipe (1031) passes through the connecting hole (113).

3. A steam boiler with a bottom automatic ash removal structure according to claim 1 or 2, characterized in that, The upper chamber (1023) is a triangular prism shape with the center line arranged horizontally. The distance between the two sides of the upper chamber (1023) along the width direction of the upper open end is vertical and increases from bottom to top. The two sides of the upper chamber (1023) along the width direction of the upper open end are provided with inclined plates on opposite sides and the inclined plates are close to the bottom of the upper chamber (1023). The distance between the two inclined plates is vertical and decreases from bottom to top. The internal area of ​​the upper chamber (1023) is divided into a fuel area and a ventilation area by the two inclined plates. The fuel area is located above the inclined plates and the ventilation area is located below the fuel area. The upper chamber (1023) has several ash drop slits (106) arranged in an array on both sides along the width direction of the upper open end. The ash drop slits (106) are located in the fuel zone and close to the inclined plate.

4. A steam boiler with a bottom automatic ash removal structure according to claim 3, characterized in that, The furnace body (102) also includes a fixed base (1021) and a lower furnace body (1022), the lower furnace body (1022) is disposed on the fixed base (1021) and located below the upper furnace body (1023); The bottom of the lower chamber (1022) is provided with a notch, and a slag conveying assembly (104) is provided at the lower opening of the notch.

5. A steam boiler with a bottom automatic ash removal structure according to claim 4, characterized in that, The slag conveying assembly (104) includes a slag conveying pipe provided at the lower opening of the notch, a slag conveying auger (1041) provided inside the slag conveying pipe, the input end of the slag conveying auger (1041) extends out of the slag conveying pipe and is poweredly connected to a slag conveying motor (1042), and a slag discharge nozzle (1043) is provided downward at the output pipe of the slag conveying pipe.

6. A steam boiler with a bottom automatic ash removal structure according to claim 4, characterized in that, The bottom of the upper chamber (1023) is extended with an inner plate (1025), and the upper open end of the lower chamber (1022) is extended with an outer plate (1024). The outer plate (1024) is located on the side of the inner plate (1025) away from the center line of the upper chamber (1023), and the outer plate (1024) and the inner plate (1025) are in contact with each other. Multiple outer plates (1024) and inner plates (1025) are provided, and multiple outer plates (1024) cooperate with the inner plates (1025) to achieve the closure of the upper open end of the lower chamber (1022).

7. A steam boiler with a bottom automatic ash removal structure according to claim 4, characterized in that, Both ventilation zones along the length direction are provided with air vents, and the openings of the air vents are extended by side convex pipes (108). The ends of the side convex pipes (108) are connected to blowers (105), and the surface of the inclined plate is provided with several ventilation holes (107).

8. A steam boiler with a bottom automatic ash removal structure according to claim 4, characterized in that, Each of the two side supports (1029) is provided with a bracket on the opposite side. A guide post (1026) is provided on the fixed base (1021). The guide post (1026) and the bracket are slidably connected. Two springs (1027) are respectively located on the upper and lower sides of the connection between the guide post (1026) and the bracket. An external step is provided at the upper end of the guide post (1026). A vibrator (1028) is provided on the bracket.

9. A steam boiler with a bottom automatic ash removal structure according to claim 8, characterized in that, A slag removal port (109) is provided on one side of the fuel area of ​​the upper chamber (1023), and a sealing plate (110) can be detachably installed at the opening of the slag removal port (109).

10. A steam boiler with a bottom automatic ash removal structure according to claim 4, characterized in that, The linear module includes a rack mounted on a fixed base (1021) and a displacement motor mounted on a slide. The output end of the displacement motor is equipped with a gear that meshes with the rack. The extension direction of the rack is parallel to the movement direction of the slide.

Images