Air hole self-dredging fire grate assembly and air hole self-dredging reciprocating fire grate furnace

Abstract

A first dredging rod is arranged on the upper surface of a movable fire grate, a rotating connecting rod and a second dredging rod movably connected with the rotating connecting rod are arranged on the lower portion of the movable fire grate, and a front fixed shifting piece and a rear fixed shifting piece are arranged on the upper surface of the lower adjacent movable fire grate. The first dredging rod and the second dredging rod are driven to move forwards to dredge the first ventilation hole and the second ventilation hole when the movable fire grate moves forwards relative to the fixed fire grate, and the first dredging rod and the second dredging rod are driven to move backwards to retreat from the ventilation holes when the movable fire grate moves backwards. Automatic cleaning of the primary air holes of the fire grate is achieved, the primary air holes can be dredged every time the movable fire grate advances in place, circulation of the primary air holes is guaranteed, the air holes can be effectively prevented from being blocked without other power sources, the cooling effect of the fire grate is guaranteed through smoothness of the air holes, and primary air can enter the furnace through the ventilation holes to promote garbage combustion.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste incineration equipment, specifically relates to the grate of a waste incinerator, and particularly relates to a grate assembly with self-unclogging air holes and a reciprocating grate furnace with self-unclogging air holes. Background Art

[0002] Existing domestic waste incinerators often adopt the form of grate furnaces. Primary air holes are arranged on the grate to supply primary air for the waste on the grate to burn. The specific structure is shown in the appearance patent with the application number 201630094032.2. In the waste incineration industry, the grate of the waste incinerator works in a high-temperature incinerator and often experiences over-temperature and corrosion. Therefore, before the primary air is supplied to burn the waste on the grate, it will first flow through the grate to cool the grate. However, during long-term operation, due to the complex composition of the waste, foreign objects often block the primary air holes of the grate. As time goes by, the blockage will become harder and more difficult to remove. The grate without the flow of primary air also loses the cooling medium, resulting in rapid corrosion of the grate. Moreover, due to insufficient supply of primary air, it seriously affects the combustion of the waste on the grate. Currently, there is no good method to solve the problem of blockage of the air holes of the grate. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a grate assembly with self-unclogging air holes and a reciprocating grate furnace with such a grate assembly, which have a simple structure and are convenient to use, aiming at the deficiencies of the prior art.

[0004] To solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0005] A wind hole self-unclogging grate assembly, comprising a fixed bracket, a transmission bracket, a first unclogging rod, a second unclogging rod, and a number of fixed grates and movable grates that are alternately overlapped front and back. The tail of the fixed grate is fixedly connected to the fixed bracket, the tail of the movable grate is rotatably connected to the transmission bracket, and the transmission bracket is connected to the output end of a driving mechanism for driving the transmission bracket to drive the movable grate to reciprocate back and forth relative to the fixed grate. A first ventilation hole is provided at the front end of the fixed grate, and a second ventilation hole is provided at the front end of the movable grate; A fixed connecting rod is provided on the upper surface of the movable grate near the tail end, and the first unclogging rod is located on the fixed connecting rod for enabling the first unclogging rod to reciprocate back and forth following the movable grate to unclog the first ventilation holes of the adjacent fixed grates above; A rotating connecting rod is provided below the movable grate, the rotating shaft of the rotating connecting rod is fixed to the lower part of the movable grate, two fixed paddles are provided at intervals front and back on the upper surface of the fixed grate near the tail end, the second unclogging rod is movably connected to the upper end of the rotating connecting rod, and the lower end of the rotating connecting rod is located between the two fixed paddles of the adjacent movable grate below for enabling the fixed paddles to drive the rotating connecting rod to drive the second unclogging rod to reciprocate back and forth when following the movable grate to unclog the second ventilation holes of the adjacent movable grates above.

[0006] For the above-mentioned wind hole self-unclogging grate assembly, further improved, a first guide rail is provided at the lower part of the fixed grate, and the first guide rail is used to guide the first unclogging rod to align with the first ventilation hole.

[0007] For the above-mentioned wind hole self-unclogging grate assembly, further improved, the two ends of the fixed grate are bent downward, longitudinal stiffening ribs are provided between the two ends, and the first guide rail is located on the longitudinal stiffening ribs.

[0008] For the above-mentioned wind hole self-unclogging grate assembly, further improved, a second guide rail is provided at the lower part of the movable grate, and the second guide rail is used to guide the second unclogging rod to align with the second ventilation hole.

[0009] For the above-mentioned wind hole self-unclogging grate assembly, further improved, the two ends of the movable grate are bent downward, longitudinal stiffening ribs are provided between the two ends, and both the rotating shaft and the second guide rail are located on the longitudinal stiffening ribs.

[0010] For the above-mentioned wind hole self-unclogging grate assembly, further improved, a limiting member is provided on the stiffening rib of the movable grate, and the limiting member is located behind the second unclogging rod for restricting the position of the second unclogging rod moving backward.

[0011] For the above-mentioned wind hole self-unclogging grate assembly, further improved, a clamping groove is provided at the rear part of the second unclogging rod, and the upper end of the rotating connecting rod is rotatably clamped in the clamping groove.

[0012] For the above-mentioned wind hole self-unclogging grate assembly, further improved, the driving mechanism is a hydraulic cylinder.

[0013] As a general technical concept, the present utility model also discloses a wind hole self-unblocking reciprocating grate, including the above-mentioned wind hole self-unblocking grate assembly.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] (1) For the wind hole self-unblocking grate assembly of the present utility model, by arranging a first unblocking rod on the upper surface of the moving grate, arranging a rotating connecting rod rotating along a vertical plane and a second unblocking rod movably connected thereto below the moving grate, and arranging a front fixed flap and a rear fixed flap on the upper surface of the adjacent moving grate below, when the moving grate moves forward relative to the fixed grate, the first unblocking rod and the second unblocking rod are driven to move forward to unblock the first ventilation hole and the second ventilation hole, and when the moving grate moves backward, the first unblocking rod and the second unblocking rod are driven to move backward and withdraw from the ventilation hole. The present utility model realizes the automatic cleaning of the primary air holes (i.e., the first ventilation hole and the second ventilation hole) of the grate on the basis of the existing grate. Every time the moving grate moves forward in place, the unblocking rod will unblock the air holes once, and then when it returns with the moving grate, it will withdraw from the ventilation hole, ensuring the flow of the primary air holes. Without other power sources, it can effectively prevent the air holes from being blocked. The smoothness of the air holes not only ensures the cooling effect of the grate, but also enables the primary air to enter the furnace through the ventilation holes to promote the combustion of garbage.

[0016] (2) For the wind hole self-unblocking reciprocating grate furnace of the present utility model, relying on the relative movement between the moving grate and the fixed grate to drive the unblocking rod to self-clean the primary air holes, without other power sources, it can realize that every time the moving grate reciprocates, the unblocking rod also reciprocates once to unblock the air holes once, which can prevent the blockage of the primary air holes of the grate, thereby avoiding a series of subsequent negative impacts. Description of the Drawings

[0017] Figure 1 is a schematic structural view of the wind hole self-unblocking grate assembly in a specific embodiment of the present utility model Figure 1 .

[0018] Figure 2 is Figure 1 a partially enlarged schematic view of the wind hole self-unblocking grate assembly in

[0019] Figure 3 is a schematic structural view of the wind hole self-unblocking grate assembly in a specific embodiment of the present utility model Figure 2 .

[0020] Legend: 02, transmission support; 03, drive mechanism; 1, fixed grate; 11, first dredging rod; 12, first ventilation hole; 13, fixed connecting rod; 14, first guide rail; 15, longitudinal stiffening rib plate; 2, moving grate; 21, second dredging rod; 211, card slot; 22, second ventilation hole; 23, rotating connecting rod; 231, rotating shaft; 24, fixed flap; 241, front fixed flap; 242, rear fixed flap; 25, second guide rail; 26, limiting member. Detailed implementation

[0021] The present utility model will be further described below in conjunction with the accompanying drawings of the specification and specific preferred embodiments, but the protection scope of the present utility model is not limited thereby.

[0022] As Figures 1 to 3 shown, based on the reciprocating grate, the air hole self-dredging grate assembly of this embodiment includes a fixed support, a transmission support 02, a first dredging rod 11, a second dredging rod 21, and a plurality of fixed grates 1 and moving grates 2 that are alternately overlapped front and back. The tail of the fixed grate 1 is fixedly connected to the fixed support, and the tail of the moving grate 2 is rotatably connected to the transmission support 02. The transmission support 02 is connected to the output end of a drive mechanism 03 for driving the transmission support 02 to drive the moving grate 2 to reciprocate back and forth relative to the fixed grate 1. A first ventilation hole 12 is opened at the front end of the fixed grate 1, and a second ventilation hole 22 is opened at the front end of the moving grate 2; a fixed connecting rod 13 is provided on the upper surface of the moving grate 2 near the tail end, and the first dredging rod 11 is located on the fixed connecting rod 13 for enabling the first dredging rod 11 to reciprocate back and forth with the moving grate 2 to dredge the first ventilation hole 12 of the adjacent fixed grate 1 above; a rotating connecting rod 23 is provided below the moving grate 2, and the rotating shaft 231 of the rotating connecting rod 23 is fixed to the lower part of the moving grate 2. Two fixed flaps 24, including a front fixed flap 241 and a rear fixed flap 242, are provided at intervals front and back on the upper surface of the fixed grate 1 near the tail end. The second dredging rod 21 is movably connected to the upper end of the rotating connecting rod 23, and the lower end of the rotating connecting rod 23 is located between the two fixed flaps 24 of the adjacent fixed grate 1 below for enabling the fixed flap 24 to drive the rotating connecting rod 23 to drive the second dredging rod 21 to reciprocate back and forth when following the moving grate 2 to dredge the second ventilation hole 22 of the adjacent moving grate 2 above.

[0023] During the working process, the drive mechanism 03 drives the transmission support 02, and the transmission support 02 drives each moving grate 2 to reciprocate back and forth relative to the fixed grate 1, thereby driving the first dredging rod 11 below the fixed grate 1 to reciprocate back and forth relative to the first ventilation hole 12 at the front end of the fixed grate 1, and at the same time driving the second dredging rod 21 below the moving grate 2 to reciprocate back and forth relative to the second ventilation hole 22 at the front end of the moving grate 2. Specifically, as Figure 1 and Figure 2As shown, when the movable grate 2 moves forward relative to the fixed grate 1, the fixed connecting rod 13 on the upper surface of the movable grate 2 also moves forward, thereby driving the first dredging rod 11 on the fixed connecting rod 13 to move forward to dredge the first ventilation hole 12. At the same time, it also drives the rotating connecting rod 23 at the lower part of the movable grate 2 to move forward. During the forward movement of the rotating connecting rod 23, it encounters the front fixed paddle 241 on the fixed grate 1. After being moved by the front fixed paddle 241, the rotating connecting rod 23 tilts forward, pushing the second dredging rod 21 connected to its upper end to move forward to dredge the second ventilation hole 22 on the movable grate 2. Figure 3 As shown, when the transmission bracket 02 drives each movable grate 2 backward relative to the fixed grate 1, it also drives the fixed connecting rod 13 on the upper surface of the movable grate 2 backward. This in turn drives the first dredging rod 11 on the fixed connecting rod 13 backward and out of the first ventilation hole 12. Simultaneously, it also drives the rotating connecting rod 23 at the lower portion of the movable grate 2 backward. During this backward movement, the rotating connecting rod 23 encounters the rear fixed paddle 242 on the fixed grate 1. Driven by the rear fixed paddle 242, the rotating connecting rod 23 tilts backward, pulling the second dredging rod 21 connected to its upper end backward and out of the second ventilation hole 22. The rear end of each fixed grate 1 rests on a fixed bracket (not shown) and remains stationary during operation. Primary air enters the lower portion of the grate and exits through the primary air holes (i.e., the first ventilation hole 12 and the second ventilation hole 22) of the grate, cooling the grate and providing air for the waste combustion above. This embodiment realizes the automatic cleaning of the primary air holes of the grate on the basis of the existing grate. Each time the moving grate 2 moves forward to its position, the air holes will be unclogged. Then, when the moving grate 2 moves back, the dredging rod will be withdrawn to ensure the flow of the primary air holes. The blockage of the air holes can be effectively prevented without other power sources. The unblocked air holes ensures the cooling effect of the grate and allows the primary air to enter the furnace through the ventilation holes to promote the combustion of garbage.

[0024] This embodiment is a dredging device for existing reciprocating grates, which can be integrated with the grate as an improvement of the reciprocating grate, or can be used as a single device and installed on different reciprocating grate furnaces.

[0025] In this embodiment, a first guide rail 14 is provided at the lower portion of the fixed grate 1 , and the first guide rail 14 is used to guide the first dredging rod 11 to align with the first ventilation hole 12 .

[0026] In this embodiment, both ends of the fixed grate 1 are bent downward, and a longitudinal reinforcing rib plate 15 is provided between the two ends. The first guide rail 14 is located on the longitudinal reinforcing rib plate 15 .

[0027] In this embodiment, a second guide rail 25 is provided at the lower portion of the movable grate 2 , and the second guide rail 25 is used to guide the second dredging rod 21 to align with the second ventilation hole 22 .

[0028] In this embodiment, both ends of the moving grate 2 are bent downward, and longitudinal reinforcing rib plates 15 are provided between the two ends. The rotating shaft 231 and the second guide rail 25 are both located on the longitudinal reinforcing rib plates 15.

[0029] In this embodiment, a limiting member 26 is provided on the reinforcing rib plate 15 of the moving grate 2. The limiting member 26 is located behind the second dredging rod 21 and is used to limit the position of the second dredging rod 21 moving backward. By limiting the position of the second dredging rod 21 moving backward, the limiting member 26 can better ensure the reliability of the function of the second dredging rod 21.

[0030] In this embodiment, a card slot 211 is provided at the rear of the second dredging rod 21. The upper end of the rotating connecting rod 23 is rotatably clamped in the card slot 211. The second dredging rod 21 and the rotating connecting rod 23 are clamped and matched through the card slot 211, which is convenient for disassembly and assembly and flexible in use.

[0031] In this embodiment, the driving mechanism 03 is a hydraulic cylinder. Using a hydraulic cylinder to drive can better realize the reciprocating movement of the moving grate 2 to push the garbage forward while realizing the dredging and cleaning of the primary air holes.

[0032] A reciprocating grate furnace with self-dredging air holes in this embodiment includes the above-mentioned air hole self-dredging grate assembly. Relying on the relative movement between the moving grate 2 and the fixed grate 1 to drive the dredging rod to self-clean the primary air holes, no other power source is required. It can realize that every time the moving grate 2 reciprocates, the dredging rod also reciprocates once to dredge the air holes once, preventing the blockage of the primary air holes of the grate, and thus avoiding a series of subsequent negative impacts.

[0033] Although the present utility model is disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present utility model by using the methods and technical contents disclosed above, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model still fall within the scope of protection of the technical solution of the present utility model.

Claims

1. A wind hole self-unclogging grate assembly, characterized in that, It includes a fixed support, a transmission support (02), a first dredging rod (11), a second dredging rod (21), several stationary grates (1) and moving grates (2) that are alternately overlapped front and back. The tail of the stationary grate (1) is fixedly connected to the fixed support, and the tail of the moving grate (2) is rotatably connected to the transmission support (02). The transmission support (02) is connected to the output end of a driving mechanism (03) for driving the transmission support (02) to drive the moving grate (2) to reciprocate back and forth relative to the stationary grate (1). A first ventilation hole (12) is provided at the front end of the stationary grate (1), and a second ventilation hole (22) is provided at the front end of the moving grate (2). On the upper surface of the moving grate (2) near the tail end, there is a fixed connecting rod (13), and the first dredging rod (11) is located on the fixed connecting rod (13) to enable the first dredging rod (11) to reciprocate back and forth following the moving grate (2) to dredge the first ventilation hole (12) of the adjacent stationary grate (1) above. Below the moving grate (2), there is a rotating connecting rod (23), and the rotating shaft (231) of the rotating connecting rod (23) is fixed to the lower part of the moving grate (2). On the upper surface of the stationary grate (1) near the tail end, two fixed paddles (24) are arranged at intervals front and back. The second dredging rod (21) is movably connected to the upper end of the rotating connecting rod (23), and the lower end of the rotating connecting rod (23) is located between the two fixed paddles (24) of the adjacent stationary grate (1) below to enable the fixed paddle (24) to drive the rotating connecting rod (23) to drive the second dredging rod (21) to reciprocate back and forth when following the moving grate (2) to dredge the second ventilation hole (22) of the adjacent moving grate (2) above.

2. The wind hole self-unclogging grate assembly according to claim 1, wherein A first guide rail (14) is provided at the lower part of the stationary grate (1), and the first guide rail (14) is used to guide the first dredging rod (11) to align with the first ventilation hole (12).

3. The wind hole self-unclogging grate assembly according to claim 2, characterized in that, Both ends of the stationary grate (1) are bent downward, and a longitudinal reinforcing rib plate (15) is provided between the two ends. The first guide rail (14) is located on the longitudinal reinforcing rib plate (15).

4. The air hole self-unclogging grate assembly according to claim 2, characterized in that, A second guide rail (25) is provided at the lower part of the moving grate (2), and the second guide rail (25) is used to guide the second dredging rod (21) to align with the second ventilation hole (22).

5. The wind hole self-unclogging grate assembly according to claim 4, characterized in that, Both ends of the moving grate (2) are bent downward, and a longitudinal reinforcing rib plate (15) is provided between the two ends. Both the rotating shaft (231) and the second guide rail (25) are located on the longitudinal reinforcing rib plate (15).

6. The air hole self-unclogging grate assembly according to claim 5, characterized in that, A limiting member (26) is provided on the longitudinal reinforcing rib plate (15) of the moving grate (2), and the limiting member (26) is located behind the second dredging rod (21) to limit the backward movement position of the second dredging rod (21).

7. The wind hole self-unclogging grate assembly according to claim 6, characterized in that, A clamping groove (211) is provided at the rear part of the second dredging rod (21), and the upper end of the rotating connecting rod (23) is rotatably clamped in the clamping groove (211).

8. The air hole self-unclogging grate assembly according to any one of claims 1 to 7, characterized in that The driving mechanism (03) is a hydraulic cylinder.

9. A wind hole self-unclogging through-type grate furnace, characterized in that, It includes the air hole self-dredging grate assembly according to any one of claims 1 to 8.

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