Anti-blocking air-cooling dry-type deslagging treatment device for boiler

Abstract

The invention relates to the technical field of boiler slag removal, and discloses an anti-blocking air-cooled dry-type slag removal treatment device for a boiler, which comprises a motor, an impeller box, a transmission rod arranged at the driving end of the motor, an exhaust pipe arranged at the upper end of the impeller box, and an anti-blocking unit arranged at the exhaust pipe, the anti-blocking unit comprises a changing part arranged at one end of the exhaust pipe and a cleaning part; by arranging the anti-blocking unit, when the filter screen is completely blocked, the internal pressure of the fan is continuously reduced, so that the changing part and the cleaning part are triggered, a cleaning frame in the cleaning part moves on the surface of the filter screen to clean pot residues blocked on the surface of the filter screen, and the pot residues are collected through the collecting assembly; and automatic dredging of the filter screen is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of boiler slag removal, in particular to an anti-clogging air-cooled dry slag removal treatment device for a boiler. BACKGROUND

[0002] The air-cooled dry slag removal device of the boiler is a device for treating boiler slag (such as boiler slag) through the principle of air cooling, which is usually used in industrial boiler systems such as power plants and heating plants, with the purpose of reducing the pollution of slag to the environment and improving the operating efficiency and environmental friendliness of the boiler. The air-cooled dry slag removal device uses strong wind to bring the slag produced in the boiler combustion process out of the hearth, and pushes the slag from the bottom of the boiler or the hearth to the slag removal device. Since air cooling is used instead of water cooling, water is not needed to treat the slag, thereby reducing water consumption and discharge problems. The air-cooled slag removal treatment device usually includes a fan system, a slag removal pipeline, a slag bucket, and a slag discharge device.

[0003] Although the existing air-cooled dry slag removal treatment device can well treat the boiler slag, it still has the following problems: Since the boiler slag is sucked into the slag bucket through the fan system for collection, part of the boiler slag may be sucked into the fan system by the high-speed flowing gas. Therefore, a filter screen is usually provided at the pipe opening of the fan to prevent the boiler slag from entering the fan and causing damage to the equipment. The boiler slag on the filter screen needs to be cleaned regularly to prevent the filter screen from being clogged and causing the device to malfunction. If the staff do not clean the filter screen in time, the clogging of the filter screen will cause the internal pressure of the fan to be unbalanced, causing the fan to work under load for a long time, which may cause damage to the equipment and make it impossible to treat the boiler slag. Therefore, an anti-clogging air-cooled dry slag removal treatment device for a boiler is needed to automatically dredge the clogged filter screen to avoid the reduction of device efficiency or damage caused by device overload due to the staff's failure to clean or discover the clogging of the filter screen in time. SUMMARY

[0004] In view of the problem of the existing technology that the filter screen cannot be cleaned in time, causing the device to malfunction or be damaged by overload, an anti-clogging air-cooled dry slag removal treatment device for a boiler is provided.

[0005] The present application provides an anti-clogging air-cooled dry slag removal treatment device for a boiler, which aims to: by setting a anti-clogging unit, when the filter screen is completely clogged, the internal pressure of the fan becomes smaller and smaller, causing the change component and the cleaning component to trigger. The cleaning rack in the cleaning component moves on the surface of the filter screen to clean the clogged boiler slag on the surface, and the boiler slag is collected by the collecting assembly, completing the automatic dredging of the filter screen.

[0006] The technical scheme of the present application is: an anti-blocking air-cooled dry slag removal treatment device for a boiler, comprising a motor and an impeller box, a transmission rod arranged on the driving end of the motor, an air extraction pipe arranged on the upper end of the impeller box, and an anti-blocking unit arranged at the air extraction pipe, wherein the anti-blocking unit comprises a change component arranged at one end of the air extraction pipe and a cleaning component.

[0007] The change component comprises an anti-blocking box arranged at one end of the air extraction pipe, a filter screen arranged inside the anti-blocking box, an upper sealing baffle arranged on the upper end side wall of the filter screen, a lower sealing baffle arranged on the lower end side wall of the filter screen, a first through hole and a second through hole opened at the upper end of the anti-blocking box, a connecting groove opened on the upper sealing baffle, a U-shaped pipe arranged at the upper end of the anti-blocking box, a collection assembly arranged at the lower end of the anti-blocking box, and a reset spring arranged between the filter screen and the inner wall of the anti-blocking box.

[0008] The two ends of the U-shaped pipe are in communication with the first through hole and the second through hole, respectively, the width of the connecting groove is equal to the distance between the first through hole and the second through hole, and in the initial state, the connecting groove is located between the first through hole and the second through hole, and the first through hole and the second through hole are both in a closed state.

[0009] Further, the cleaning component comprises a piston plate arranged on the inner wall of the U-shaped pipe, a mounting strip arranged at the lower end of the piston plate, a horizontal groove opened at the lower end of the mounting strip, a sliding block slidingly arranged in the horizontal groove, a cleaning frame arranged at the lower end of the sliding block, and a clamping assembly arranged between the cleaning frame and the side wall of the filter screen.

[0010] Further, the clamping assembly comprises a clamping bent plate arranged on the side wall of the filter screen, and the cleaning frame is slidingly arranged in the two clamping bent plates.

[0011] Further, the collection assembly comprises a square groove opened at the lower end of the anti-blocking box, a collection box arranged at the lower end of the anti-blocking box, and an opening of the collection box located directly below the square groove, wherein the end face shape and size of the lower sealing baffle are equal to the end face shape and size of the square groove, and in the initial state, the lower sealing baffle closes the upper side of the square groove.

[0012] Further, a hinged door is arranged on the side wall of the collection box, and the hinged door is used for cleaning the boiler slag in the collection box.

[0013] Further, one end of the anti-blocking box is provided with a connecting pipe.

[0014] Further, the cleaning frame is tightly attached to the surface of the filter screen, a plurality of chamfers are opened on the cleaning frame, and the chamfers are used for cleaning the blocked boiler slag on the filter screen.

[0015] The present application has the following beneficial effects:

[0016] 1. By setting the change component, when the filter screen appears larger area blockage, the pressure of the fan cavity part gradually decreases, at this time the filter screen moves along the horizontal direction under the action of pressure, when the upper sealing baffle moves, the connecting groove and the second port are connected, at this time the coil pipe and the fan cavity are connected, and the piston plate in the coil pipe moves along the inner wall of the coil pipe under the action of pressure, thereby automatically triggering the cleaning component to clean the filter screen without the aid of sensor or controller, without manual regular cleaning, avoiding the adverse consequences caused by manual cleaning not in time due to filter screen blockage.

[0017] 2. By setting the cleaning component, when the filter screen is blocked, the cleaning component is automatically triggered by the change component to clean the dregs of rice blocked on the surface of the filter screen. Because the cleaning frame is provided with a chamfer, when the cleaning frame moves along the surface of the filter screen, the dregs of rice blocked on the surface thereof falls under the action of gravity, and when the surface of the filter screen is unblocked, the filter screen is quickly reset, and the fan works normally to clean the dregs of rice in the boiler.

[0018] 3. By setting the collecting assembly, under normal conditions, the collecting box and the anti-blocking box are not connected, when the filter screen is blocked and the piston plate processes the surface thereof, the upper end of the collecting box is connected with the anti-blocking box along with the synchronous movement of the lower sealing plate, at this time the dregs of rice can fall into the collecting box under the action of gravity, and the workers can recycle and process the dregs of rice in the collecting box through the opening and closing door. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a first perspective view of the structure of the application;

[0020] Figure 2 It is a schematic view of the internal structure of the anti-blocking box of the application;

[0021] Figure 3 It is a schematic view of the Figure 2 side view of the structure;

[0022] Figure 4 It is a schematic view of the Figure 3 enlarged structure of A in the application;

[0023] Figure 5 It is a schematic view of the installation structure of the coil pipe of the application;

[0024] Figure 6 It is a schematic view of the position structure of the connecting groove of the application;

[0025] Figure 7 It is a schematic view of the installation structure of the sliding block of the application;

[0026] Figure 8 It is a schematic view of the installation structure of the cleaning frame of the application;

[0027] Figure 9 Figure is a schematic diagram of the mounting strip mounting structure of the present application.

[0028] In the figure:

[0029] 1, motor; 2, impeller box; 3, transmission rod; 4, exhaust pipe; 101, anti-blocking box; 102, filter screen; 103, upper sealing baffle; 104, lower sealing baffle; 105, first through hole; 106, second through hole; 107, connecting groove; 108, L-shaped pipe; 109, reset spring; 201, piston plate; 202, mounting strip; 203, horizontal groove; 204, sliding block; 205, cleaning frame; 301, clamping bent plate; 302, collection box; 303, opening and closing door; 304, connecting pipe. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0031] Example 1, refer to Figures 1-9 For the first embodiment of the present application, an anti-blocking air-cooled dry deslagging device for a boiler is provided, which comprises a motor 1 and an impeller box 2, a transmission rod 3 fixedly installed on the driving end of the motor 1, an exhaust pipe 4 fixedly installed on the upper end of the impeller box 2, and further comprises an anti-blocking unit installed at the exhaust pipe 4, which comprises a change component installed at one end of the exhaust pipe 4 and a cleaning component.

[0032] The automatic dredging component comprises an anti-blocking box 101 fixedly installed at one end of the exhaust pipe 4, a filter screen 102 slidingly installed inside the anti-blocking box 101, an upper sealing baffle 103 fixedly installed on the upper end side wall of the filter screen 102, a lower sealing baffle 104 fixedly installed on the lower end side wall of the filter screen 102, a first through hole 105 and a second through hole 106 opened on the upper end of the anti-blocking box 101, a connecting groove 107 opened on the upper sealing baffle 103, an L-shaped pipe 108 fixedly installed on the upper end of the anti-blocking box 101, a collection assembly installed at the lower end of the anti-blocking box 101, and a reset spring 109 fixedly installed between the filter screen 102 and the inner wall of the anti-blocking box 101.

[0033] Two ends of the U-shaped pipe 108 are communicated with the first through hole 105 and the second through hole 106 respectively, the width of the connecting groove 107 is equal to the distance between the first through hole 105 and the second through hole 106, in the initial state, the connecting groove 107 is located between the first through hole 105 and the second through hole 106, and the first through hole 105 and the second through hole 106 are both in the closed state. One end of the anti-blocking box 101 is provided with a connecting pipe 304. The cleaning frame 205 is tightly attached to the surface of the filter screen 102, and a plurality of chamfers are opened on the cleaning frame 205, which are used for cleaning the blocked pot residues on the filter screen 102.

[0034] With reference to Figure 2 and Figure 3 The cleaning component includes a piston plate 201 slidingly installed on the inner wall of the U-shaped pipe 108, a mounting strip 202 fixedly installed at the lower end of the piston plate 201, a horizontal groove 203 opened at the lower end of the mounting strip 202, a sliding block 204 slidingly installed in the horizontal groove 203, and a cleaning frame 205 fixedly installed at the lower end of the sliding block 204. The cleaning frame 205 is provided with a clamping assembly between the side wall of the filter screen 102.

[0035] Specifically, after the anti-blocking unit is blocked by the filter screen 102, the pot residues blocked on the surface of the filter screen 102 are cleaned by the principle that the pressure in the internal cavity of the impeller box 2 changes. Specifically, it mainly includes a changing component and a cleaning component. The changing component changes the communication space of the internal cavity of the impeller box 2 (i.e. when the filter screen 102 is blocked, the internal pressure of the impeller box 2 gradually decreases to generate a suction force on the filter screen 102, at this time, the filter screen 102 moves in the horizontal direction, and the internal cavity of the U-shaped pipe 108 is communicated with the internal cavity of the impeller box 2). Through the change, the piston plate 201 in the U-shaped pipe 108 slides along the inner wall of the U-shaped pipe 108 under the action of the suction force, and in turn drives the cleaning frame 205 at the lower end to clean the pot residues on the filter screen 102.

[0036] In the prior art, the boiler slag is sucked into the slag hopper by the fan system for collection, but part of the boiler slag is still sucked into the fan system by the high-speed flowing gas. The workers need to clean the boiler slag on the filter screen 102 regularly to prevent the filter screen 102 from being blocked and causing the device to malfunction. If the workers do not clean in time, the filter screen 102 is blocked, the internal pressure of the fan cannot be balanced, the fan is in long-term load work, the equipment is easily damaged, and the boiler slag cannot be treated. Therefore, a slag removal treatment device capable of automatically dredging the blocked filter screen 102 is needed to avoid the reduction of device efficiency or damage caused by device load due to the workers' delayed cleaning or failure to discover the blockage of the filter screen 102. The present application sets a change component. When the filter screen 102 is blocked, the change component can automatically clean the filter screen 102 by changing the internal pressure of the cavity to avoid the above-mentioned problems and greatly improve the efficiency and service life of the boiler slag removal treatment device.

[0037] When the filter screen 102 is blocked by a large area, the pressure of the fan cavity gradually decreases. At this time, the filter screen 102 moves in the horizontal direction under the action of the pressure. When the upper blocking plate 103 moves, the connecting groove 107 and the second opening 106 are in communication with each other. At this time, the L-shaped pipe 108 and the fan cavity are in communication with each other, and the piston plate 201 in the L-shaped pipe 108 moves along the inner wall of the L-shaped pipe 108 under the action of the pressure. Thus, without the aid of sensors or controllers, the cleaning component is automatically triggered to clean the filter screen 102, without the need for regular manual cleaning, to avoid the adverse consequences caused by the delayed manual cleaning of the blocked filter screen 102.

[0038] When the filter screen 102 is blocked, the cleaning component is automatically triggered by the change component to clean the boiler slag blocked on the surface of the filter screen 102. Because the cleaning frame 205 is provided with a chamfer, when the cleaning frame 205 moves along the surface of the filter screen 102, the boiler slag blocked on the surface falls under the action of gravity. When the surface of the filter screen 102 is dredged, the filter screen 102 is quickly reset, and the fan works normally to clean the boiler slag in the boiler.

[0039] During use, when the filter screen 102 is blocked, the impeller in the impeller box 2 continues to rotate, so that a negative pressure is formed in the internal cavity of the impeller box 2. Because the filter screen 102 is blocked, the air suction pipe 4 cannot normally supplement the gas inside the cavity, so the negative pressure in the cavity generates an inward suction force on the filter screen 102. The filter screen 102 slides inward under the action of the suction force, and drives the upper sealing baffle 103 to move synchronously, so that the connecting groove 107 and the first through port 105 are in communication with each other. At this time, the cavity and the internal cavity of the L-shaped pipe 108 are in communication with each other. At this time, the negative pressure in the cavity directly acts on the piston plate 201. At this time, the piston plate 201 slides upward under the action of the pressure, and then drives the cleaning frame 205 at the lower end to move along the surface of the filter screen 102 through the mounting strip 202. The cleaning frame 205 cleans the slag on the filter screen 102 during movement. When the filter screen 102 is cleaned, the gas can normally pass through the filter screen 102 and directly enter the cavity. At this time, the filter screen 102 is no longer subjected to the suction force of the negative pressure, and is reset under the action of the elastic force of the reset spring 109, thereby driving the cleaning frame 205 to reset synchronously, facilitating cleaning of the next blockage.

[0040] Embodiment 2, refer to Figures 7-8 As a second embodiment of the present application, the difference between this embodiment and the first embodiment is that the clamping assembly comprises clamping bent plates 301 fixedly installed on the side wall of the filter screen 102, and the cleaning frame 205 is slidingly installed in the two clamping bent plates 301.

[0041] Specifically, the upper end of the cleaning frame 205 is slidingly installed below the mounting strip 202 through the sliding block 204, so that the cleaning frame 205 can freely slide in the horizontal direction. When the filter screen 102 moves in the horizontal direction under the action of the pressure, the cleaning frame 205 can always tightly adhere to the surface of the filter screen 102. At the same time, the cleaning frame 205 is installed on the filter screen 102 through the clamping bent plates 301, so that the cleaning frame 205 can move along the surface of the filter screen 102 in the vertical direction and clean the surface.

[0042] The remaining structure is the same as that of Embodiment 1.

[0043] Embodiment 3, refer to Figures 1-2 and Figures 5-6 As a third embodiment of the present application, the difference between this embodiment and the second embodiment is that the collecting assembly comprises a square groove opened in the lower end of the anti-blocking box 101, a collecting box 302 fixedly installed at the lower end of the anti-blocking box 101, and an opening of the collecting box 302 located directly below the square groove. The end face shape and size of the lower sealing baffle 104 are equal to those of the square groove, and in the initial state, the lower sealing baffle 104 closes the upper side of the square groove. The side wall of the collecting box 302 is provided with an opening and closing door 303, which is used to clean the slag in the collecting box 302.

[0044] Specifically, when the filter screen 102 is in a normal state, the upper end of the collecting box 302 is blocked by the lower blocking plate 104, at this time the collecting box 302 is in a closed state, when the filter screen 102 is blocked, the lower blocking plate 104 moves synchronously with the filter screen 102, at this time the collecting box 302 is in an open state, the cleaned pot slag falls into the collecting box 302 under the action of gravity, thus the pot slag blocked in the anti-blocking box 101 can be taken out without disassembling the device, effectively improving the overall efficiency.

[0045] During use, when the filter screen 102 moves along the horizontal direction under the action of pressure, the lower blocking plate 104 moves synchronously, the upper end of the collecting box 302 is communicated with the inside of the anti-blocking box 101 during the movement of the lower blocking plate 104, at this time the cleaned pot slag directly falls into the inside of the collecting box 302 under the action of gravity for collection, when the filter screen 102 is cleaned and reset, the collecting box 302 is in a closed state again, at this time the worker can regularly clean the inside of the collecting box 302 through the opening and closing door 303.

[0046] The rest of the structure is the same as that of example 2.

[0047] In combination of examples 1-3, the working principle of the present application is as follows: when the filter screen 102 is blocked, the impeller in the impeller box 2 continues to rotate, so that a negative pressure is formed in the inside cavity of the impeller box 2, because the filter screen 102 is blocked, the air compensation in the cavity cannot be normally performed by the air suction pipe 4, thus the negative pressure in the cavity generates an inward suction force on the filter screen 102, the filter screen 102 slides inward under the action of the suction force, the upper blocking plate 103 moves synchronously, so that the connecting groove 107 and the first through port 105 are communicated with each other, at this time the cavity and the inside of the L-shaped pipe 108 are communicated with each other, at this time the negative pressure in the cavity directly acts on the piston plate 201, at this time the piston plate 201 slides upward under the action of the pressure, and then the lower end cleaning frame 205 is driven to move along the surface of the filter screen 102 by the installation strip 202, the cleaning frame 205 cleans the pot slag on the filter screen 102 during the movement, when the filter screen 102 is cleaned, the gas can normally pass through the filter screen 102 and directly enter the cavity, at this time the filter screen 102 is no longer subjected to the suction force of the negative pressure, and is reset under the action of the elastic force of the reset spring 109, and then the cleaning frame 205 is synchronously reset, facilitating the cleaning of the next blockage.

[0048] At the same time, when the filter screen 102 moves along the horizontal direction under the action of the pressure, the lower sealing baffle 104 is driven to move synchronously, and the upper end of the collecting box 302 is communicated with the inside of the anti-blocking box 101 in the movement process. At this time, the cleaned slag directly falls to the inside of the collecting box 302 under the action of gravity for collection. When the filter screen 102 is cleaned and reset, the collecting box 302 is in a closed state again. At this time, the worker can regularly clean the inside of the collecting box 302 through the opening and closing door 303.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A clog-resistant, air-cooled, dry slag removal device for boilers, comprising a motor (1) and an impeller box (2), a transmission rod (3) disposed on the drive end of the motor (1), and an exhaust pipe (4) disposed on the upper end of the impeller box (2), characterized in that, It also includes an anti-blocking unit installed at the exhaust pipe (4), the anti-blocking unit including a variable component and a cleaning component installed at one end of the exhaust pipe (4); The variable components include an anti-clogging box (101) disposed at one end of the exhaust pipe (4), a filter screen (102) disposed inside the anti-clogging box (101), an upper sealing baffle (103) disposed on the upper side wall of the filter screen (102), a lower sealing baffle (104) disposed on the lower side wall of the filter screen (102), a first opening (105) and a second opening (106) opened at the upper end of the anti-clogging box (101), a connecting groove (107) opened on the upper sealing baffle (103), a U-shaped tube (108) disposed at the upper end of the anti-clogging box (101), a collection component disposed at the lower end of the anti-clogging box (101), and a reset spring (109) disposed between the filter screen (102) and the inner wall of the anti-clogging box (101). The two ends of the U-shaped tube (108) are connected to the first port (105) and the second port (106) respectively. The width of the connecting groove (107) is equal to the distance between the first port (105) and the second port (106). In the initial state, the connecting groove (107) is located between the first port (105) and the second port (106), and both the first port (105) and the second port (106) are in a closed state.

2. A clog-resistant, air-cooled, dry slag removal device for boilers according to claim 1, characterized in that, The cleaning component includes a piston plate (201) disposed on the inner wall of the U-shaped tube (108), an mounting strip (202) disposed at the lower end of the piston plate (201), a horizontal groove (203) opened at the lower end of the mounting strip (202), a sliding block (204) slidably disposed in the horizontal groove (203), a cleaning frame (205) disposed at the lower end of the sliding block (204), and a locking assembly installed between the cleaning frame (205) and the side wall of the filter screen (102).

3. A clog-resistant, air-cooled, dry slag removal device for boilers according to claim 2, characterized in that, The locking assembly includes locking bends (301) disposed on the side wall of the filter screen (102), and the cleaning rack (205) is slidably mounted in the two locking bends (301).

4. A clog-resistant, air-cooled, dry slag removal device for boilers according to claim 1, characterized in that, The collection component includes a square groove at the lower end of the anti-blocking box (101) and a collection box (302) at the lower end of the anti-blocking box (101). The opening of the collection box (302) is located directly below the square groove. The end face shape and size of the lower sealing baffle (104) are equal to the end face shape and size of the square groove. In the initial state, the lower sealing baffle (104) closes the top of the square groove.

5. A clog-resistant, air-cooled, dry slag removal device for boilers according to claim 4, characterized in that, An opening and closing door (303) is provided on the side wall of the collection box (302), and the opening and closing door (303) is used to clean the pot residue in the collection box (302).

6. A clog-resistant, air-cooled, dry slag removal device for boilers according to claim 1, characterized in that, One end of the anti-blocking box (101) is provided with a connecting pipe port (304).

7. A clog-resistant, air-cooled, dry slag removal device for boilers according to claim 4, characterized in that, The cleaning rack (205) is attached to the surface of the filter screen (102). The cleaning rack (205) has multiple chamfers, which are used to clean the slag clogging the filter screen (102).

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