Bottom blowing furnace waste heat boiler horizontal section slag cleaning and collecting device

Abstract

The utility model discloses a bottom-blowing furnace waste heat boiler horizontal section slag cleaning and collecting device, which relates to the technical field of bottom-blowing furnace slag cleaning and comprises a collecting component and a crushing component. The collecting assembly comprises an upper collecting hopper, a slag guide pipe and a lower collecting hopper, an upper collecting cavity is formed in the upper collecting hopper, a slag screening piece is arranged in the collecting cavity, and a slag screening channel is formed in the slag screening piece and used for screening bonded slag of different sizes; a lower collecting cavity is formed in the lower collecting hopper, and a buffer part is arranged in the lower collecting cavity; the crushing assembly comprises a crushing part and a driving part; the slag falling from the horizontal section of the waste heat boiler is collected through the upper collecting hopper, small slag is screened through the slag screening channel and then falls into the lower collecting hopper, large slag is left in the upper collecting hopper and then is crushed through the crushing piece, and therefore the slag in the upper collecting hopper is crushed to be small and then falls into the lower collecting hopper, and the slag falling from the horizontal section of the waste heat boiler is collected. And slag is prevented from blocking the slag guide pipe and the upper collecting hopper, so that the bottom of the horizontal section of the waste heat boiler is not blocked by slag residues.

Description

TECHNICAL FIELD

[0001] The utility model relates to bottom blowing furnace slag cleaning technical field, concretely relates to a bottom blowing furnace waste heat boiler horizontal section slag cleaning collection device. BACKGROUND

[0002] With bottom blowing furnace raw material impurity content higher and higher in recent years, the slag accumulation of bottom blowing furnace waste heat boiler horizontal section radiation zone entrance under the slope of baffle is more and more, lead to the poor heat exchange effect of boiler, the outlet flue gas temperature rises, and when serious, the slag leads to the small flue gas passage, the negative pressure reduces, and the flue gas extraction is difficult; At the same time, due to the operation of the boiler, the boiler flue cannot open the manhole door to check, and the slag accumulation of the radiation zone cannot be found, and the boiler needs to be cooled and depressurized each time, and the accumulated slag is handled manually, which is time-consuming and has great safety risk, causing the system operation rate to reduce and the operation safety risk to increase. SUMMARY

[0003] The utility model discloses a bottom blowing furnace waste heat boiler horizontal section slag cleaning collection device, which is used to solve the problem of slag accumulation at the lower part of the existing bottom blowing furnace waste heat boiler.

[0004] To achieve the above-mentioned purpose, the utility model provides a bottom blowing furnace waste heat boiler horizontal section slag cleaning collection device, which comprises:

[0005] The collection assembly comprises an upper collecting hopper, a slag guide pipe in communication with the upper collecting hopper, and a lower collecting hopper arranged below the slag guide pipe.

[0006] The crushing assembly comprises a crushing element arranged in the upper collecting cavity and a driving element arranged on the upper collecting hopper.

[0007] As a further improvement of the utility model, the upper collecting hopper and the lower collecting hopper are both funnel-shaped structures.

[0008] As a further improvement of the utility model, the slag guide pipe comprises a vertical section connected with the upper collecting hopper and the lower collecting hopper respectively, and an inclined section connected with the vertical section.

[0009] As a further improvement of the utility model, the screen residue part includes a screen residue fence arranged in the upper collecting cavity; the screen residue fence is arranged adjacent to the residue guide pipe; the screen residue channel is arranged on the screen residue fence; the length and width of the screen residue channel are both smaller than the inner diameter of the residue guide pipe.

[0010] As a further improvement of the utility model, the buffer part includes a spiral guide groove arranged in the lower collecting hopper; one end of the spiral guide groove is in communication with the vertical section adjacent to the lower collecting hopper, and the other end faces the inside of the lower collecting cavity; the side edge of the spiral guide groove is connected with the inner wall of the lower collecting hopper.

[0011] As a further improvement of the utility model, the outer wall of the lower collecting hopper is provided with an observation window at the upper end, and the lower collecting hopper is provided with a residue outlet at the bottom end; the residue outlet is provided with a residue door; the observation window is located at the lower end of the spiral guide groove.

[0012] As a further improvement of the utility model, the driving part includes a hydraulic cylinder arranged on the support frame and a hydraulic rod slidingly arranged on the upper collecting hopper; one end of the hydraulic rod penetrates through the upper collecting hopper and is located in the upper collecting cavity; the crushing part includes a crushing plate arranged on the hydraulic rod and an extrusion plate arranged in the upper collecting cavity; the crushing plate is located in the upper collecting cavity and faces the extrusion plate; the crushing plate is in gap cooperation with the screen residue fence; the extrusion plate is provided with a guide plate.

[0013] The utility model has the beneficial effects of:

[0014] By arranging the upper collecting hopper to collect the slag of the horizontal section of the waste heat boiler, and by screening the smaller slag in the screen residue channel and then falling into the lower collecting hopper, and by crushing the larger slag in the upper collecting hopper, the slag in the upper collecting hopper is crushed and then falls into the lower collecting hopper, so that the slag is prevented from blocking the residue guide pipe and the upper collecting hopper, and thus the bottom of the horizontal section of the waste heat boiler is ensured to be free of slag. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the installation of the slag cleaning and collecting device for the horizontal section of the waste heat boiler of the bottom blowing furnace.

[0016] Figure 2 It is a whole structural schematic view of the slag cleaning and collecting device for the horizontal section of the waste heat boiler of the bottom blowing furnace.

[0017] Figure 3 It is an internal structural schematic view of the slag cleaning and collecting device for the horizontal section of the waste heat boiler of the bottom blowing furnace.

[0018] Figure 4 It is a screen residue part structural schematic view of the slag cleaning and collecting device for the horizontal section of the waste heat boiler of the bottom blowing furnace.

[0019] Reference signs:

[0020] 1, upper collecting hopper; 2, slag guide pipe; 201, vertical section; 202, inclined section; 203, transition elbow; 3, lower collecting hopper; 4, upper collecting cavity; 5, slag screening member; 501, slag screening fence; 6, slag screening passage; 7, lower collecting cavity; 8, buffer member; 9, crushing member; 901, crushing plate; 902, extrusion plate; 10, driving member; 1001, hydraulic cylinder; 1002, hydraulic rod; 11, support frame; 12, cover; 13, observation window; 14, slag outlet; 15, slag door; 16, clamping seat; 17, guide plate; 18, crushing protrusion. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the described examples are only a part of the examples of the utility model, rather than all the examples. The examples in the application and the features in the examples can be combined with each other without conflict. Based on the examples in the utility model, all other examples obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0022] In an example, referring to Figure 1 , 2 , the utility model discloses a horizontal section slagging cleaning and collecting device of a bottom blown furnace waste heat boiler, which comprises a collecting assembly and a crushing assembly.

[0023] Among them, the collecting assembly comprises an upper collecting hopper 1, a slag guide pipe 2 communicated with the upper collecting hopper 1 and a lower collecting hopper 3 arranged below the slag guide pipe 2. The upper collecting hopper 1 is internally provided with an upper collecting cavity 4, and the collecting cavity is internally provided with a slag screening member 5. The slag screening member 5 is provided with a slag screening passage 6 for screening different sizes of slag. The lower collecting hopper 3 is internally provided with a lower collecting cavity 7, and the lower collecting cavity 7 is internally provided with a buffer member 8. The crushing assembly comprises a crushing member 9 arranged in the upper collecting cavity 4 and a driving member 10 arranged on the upper collecting hopper 1. The crushing member 9 is located above the slag screening member 5. The driving member 10 is connected with the crushing member 9, and the driving member 10 reciprocates under the action of external force, thereby driving the crushing member 9 to reciprocate and extrude the slag.

[0024] Further, referring to Figure 2 , the upper collecting hopper 1 and the lower collecting hopper 3 are both funnel-shaped structures. The upper collecting hopper 1 is externally provided with a support frame 11, and the support frame 11 is connected with the horizontal section of the waste heat boiler.

[0025] Preferably, the support frame 11 is welded around the periphery of the upper collecting hopper 1, and the support frame 11 is connected with the horizontal section of the preheating boiler through bolts.

[0026] Preferably, the large end of the upper collecting hopper 1 is communicated with the bottom of the horizontal section of the waste heat boiler, and the small end of the upper collecting hopper 1 is communicated with the slag guide pipe 2.

[0027] Preferably, the hollow inner part of the upper collecting hopper 1 and the lower collecting hopper 3 respectively forms the upper collecting cavity 4 and the lower collecting cavity 7.

[0028] In the above arrangement, the upper collecting hopper 1 is connected with the horizontal section of the waste heat boiler through the support frame 11, which increases the connection stability of the upper collecting hopper 1 and facilitates the subsequent installation of the driving member 10 on the collecting hopper, and the slag falling from the horizontal section of the waste heat boiler falls into the upper collecting hopper 1 from the large end of the upper collecting hopper 1.

[0029] Further, referring to Figure 3 , the slag guide pipe 2 includes a vertical section 201 connected with the upper collecting hopper 1 and the lower collecting hopper 3 respectively, an inclined section 202 connected with the vertical section 201, and a transition elbow 203 arranged between the vertical section 201 and the inclined section 202.

[0030] Preferably, the vertical section 201, the transition elbow 203 and the inclined section 202 are respectively connected with the upper collecting hopper 1 and the lower collecting hopper 3 through flanges and bolts.

[0031] Further, referring to Figure 4 , the slag screening member 5 includes a slag screening fence 501 arranged in the upper collecting cavity 4, the slag screening fence 501 is arranged adjacent to the slag guide pipe 2, the slag screening passages 6 are arranged on the slag screening fence 501 in intervals, and the length and width of the slag screening passages 6 are both smaller than the inner diameter of the slag guide pipe 2.

[0032] Preferably, the slag screening fence 501 includes a peripheral reinforcing ring and a plurality of groups of reinforcing bars welded on the reinforcing ring in intervals.

[0033] Preferably, the intervals between the plurality of groups of reinforcing bars form the slag screening passages 6.

[0034] In the above arrangement, the slag falling into the slag guide pipe 2 from the upper collecting hopper 1 with a smaller size that can pass through the slag screening passages 6 falls into the lower collecting hopper 3, and the transition elbow 203 increases the angle between the vertical section 201 and the inclined section 202 when the slag falls along the vertical section 201 and the inclined section 202, thereby facilitating the slag falling.

[0035] Further, referring to Figure 3 , the buffer member 8 includes a spiral guide groove arranged in the lower collecting hopper 3, one end of the spiral guide groove is communicated with the vertical section 201 adjacent to the lower collecting hopper 3, the other end of the spiral guide groove faces the inside of the lower collecting cavity 7, and the side edge of the spiral guide groove is connected with the inner wall of the lower collecting hopper 3.

[0036] Preferably, the large end of the lower collecting hopper 3 is provided with a cover 12, and the vertical section 201 penetrates through the cover 12 and is communicated with the lower collecting cavity 7.

[0037] Further, referring to Figure 3 , the outer wall of the lower collecting hopper 3 is provided with an observation window 13 at the upper end, and a slag outlet 14 is arranged at the bottom end of the lower collecting hopper 3, and a slag door 15 is arranged on the slag outlet 14; the observation window 13 is located at the lower end of the spiral guide groove.

[0038] Preferably, an "L"-shaped clamping seat 16 is arranged at the slag outlet 14, and the slag door 15 is inserted into the clamping seat 16.

[0039] In the above arrangement, when the slag falls into the lower collecting hopper 3 from the slag guide pipe 2, the slag moves along the spiral guide groove, which can slow down the falling speed of the slag, and the lower collecting hopper 3 is closed by the cover 12 to avoid a large amount of dust escaping during the falling process of the slag. The amount of collected slag in the lower collecting hopper 3 can be observed through the observation window 13, so that the slag door 15 can be opened to empty the slag in the lower collecting hopper 3 from the slag outlet 14.

[0040] Further, referring to Figure 3 , the driving member 10 includes a hydraulic cylinder 1001 arranged on the support frame 11 and a hydraulic rod 1002 slidingly arranged on the upper collecting hopper 1, one end of the hydraulic rod 1002 penetrating the upper collecting hopper 1 and located in the upper collecting cavity 4; the crushing member 9 includes a crushing plate 901 arranged on the hydraulic rod 1002 and an extrusion plate 902 arranged in the upper collecting cavity 4, the crushing plate 901 being located in the upper collecting cavity 4 and facing the extrusion plate 902, the crushing plate 901 being gap-fitted with the slag screening fence 501, and the extrusion plate 902 being provided with a guide plate 17.

[0041] Preferably, the extrusion plate 902 and the crushing plate 901 are respectively provided with crushing protrusions 18 at intervals.

[0042] In the above arrangement, the hydraulic rod 1002 drives the crushing plate 901 to move back and forth, and the large slag is extruded and crushed into small pieces between the crushing plate 901 and the extrusion plate 902, the small slag falls into the slag guide pipe 2 from the slag screening channel 6, and the large slag is extruded and crushed again and finally falls into the lower collecting hopper 3.

[0043] In this embodiment, the scraper machine below the horizontal section of the waste heat boiler is removed, and the upper collecting hopper 1 is installed below the horizontal section of the waste heat boiler, the generated slag falls into the upper collecting hopper 1, part of the small slag falls into the slag guide pipe 2 through the slag screening channel 6 and finally falls into the lower collecting hopper 3, and the large slag is crushed into small pieces under the extrusion of the crushing plate 901 driven by the hydraulic rod 1002 and falls into the lower collecting hopper 3, thereby avoiding the accumulation of slag in the horizontal section of the waste heat boiler; the slag in the lower collecting hopper 3 can be observed through the observation window 13, and the slag in the lower collecting hopper 3 can be emptied in time from the slag outlet 14.

[0044] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for cleaning and collecting slag in the horizontal section of a bottom-blown waste heat boiler, characterized in that, include: The collection assembly includes an upper collection hopper (1), a slag guide pipe (2) communicating with the upper collection hopper (1), and a lower collection hopper (3) disposed below the slag guide pipe (2); the upper collection hopper (1) is provided with an upper collection chamber (4); the collection chamber is provided with a slag screen (5); the slag screen (5) is provided with a slag screening channel (6) for screening slag of different sizes; the lower collection hopper (3) is provided with a lower collection chamber (7), and the lower collection chamber (7) is provided with a buffer (8); The crushing assembly includes a crushing component (9) disposed in the upper collecting chamber (4) and a driving component (10) disposed on the upper collecting hopper (1); the crushing component (9) is located above the slag screen component (5); the driving component (10) is connected to the crushing component (9), and the driving component (10) moves back and forth under the action of external force, thereby driving the crushing component (9) to move back and forth to squeeze and form slag.

2. The slag cleaning and collection device for the horizontal section of a bottom-blown waste heat boiler according to claim 1, characterized in that: Both the upper collecting hopper (1) and the lower collecting hopper (3) are funnel-shaped structures; the upper collecting hopper (1) is provided with a support frame (11) on its exterior; the support frame (11) is connected to the horizontal section of the waste heat boiler.

3. The slag cleaning and collection device for the horizontal section of a bottom-blown waste heat boiler according to claim 2, characterized in that: The slag guide pipe (2) includes a vertical section (201) connected to the upper collection hopper (1) and the lower collection hopper (3) respectively, and an inclined section (202) connected to the vertical section (201); a transition bend (203) is provided between the vertical section (201) and the inclined section (202).

4. The slag cleaning and collection device for the horizontal section of a bottom-blown waste heat boiler according to claim 3, characterized in that: The slag screening component (5) includes a slag screening fence (501) disposed in the upper collection chamber (4); the slag screening fence (501) is disposed adjacent to the slag guide pipe (2); the slag screening channels (6) are spaced on the slag screening fence (501), and the length and width of the slag screening channels (6) are both smaller than the inner diameter of the slag guide pipe (2).

5. A slag cleaning and collection device for the horizontal section of a bottom-blown waste heat boiler according to claim 4, characterized in that: The buffer (8) includes a spiral guide groove disposed in the lower collecting hopper (3); one end of the spiral guide groove is connected to the vertical section (201) adjacent to the lower collecting hopper (3), and the other end faces the interior of the lower collecting cavity (7), and the side edge of the spiral guide groove is connected to the inner wall of the lower collecting hopper (3).

6. The slag cleaning and collection device for the horizontal section of a bottom-blown waste heat boiler according to claim 5, characterized in that: The upper end of the outer wall of the lower collecting hopper (3) is provided with an observation window (13), and the bottom end of the lower collecting hopper (3) is provided with a slag outlet (14); the slag outlet (14) is provided with a slag gate (15); the observation window (13) is located at the lower end of the spiral guide groove.

7. A slag cleaning and collection device for the horizontal section of a bottom-blown waste heat boiler according to claim 6, characterized in that: The driving component (10) includes a hydraulic cylinder (1001) mounted on a support frame (11) and a hydraulic rod (1002) slidably mounted on the upper collecting hopper (1); one end of the hydraulic rod (1002) passes through the upper collecting hopper (1) and is located in the upper collecting chamber (4); the crushing component (9) includes a crushing plate (901) mounted on the hydraulic rod (1002) and an extrusion plate (902) mounted in the upper collecting chamber (4); the crushing plate (901) is located in the upper collecting chamber (4) and faces the extrusion plate (902), and the crushing plate (901) is in clearance fit with the slag screen fence (501); the extrusion plate (902) is provided with a guide plate (17).

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