Side wall structure for garbage grate furnace

Abstract

The side wall structure comprises a furnace body, a fire grate and a fire grate support, the fire grate and the fire grate support are arranged in the furnace body, and the interior of the furnace body is sequentially divided into a drying area, a combustion area and a burnout area from a feeding port to a discharging port. The furnace body located in the combustion area is composed of an inner refractory layer, a middle hollow layer and an outer heat insulation layer, and a cleaning mechanism is arranged in the furnace body located in the combustion area. The side walls of the furnace body in the combustion area are arranged in a distinguished mode, the service life of equipment can be prolonged, the problems that the combustion area in the furnace body is much in coke and ash are solved through the cleaning mechanism, and the effect of maintaining the equipment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage grate furnaces, in particular to a side wall structure for garbage grate furnaces. Background Art

[0002] The grate is the core part of the waste incinerator. It plays a vital role in the overall process route, incineration effect, project cost, economic benefits, etc. In order to meet the needs of engineering design, we should focus on mastering the technical characteristics of the waste incineration grate and make technical reserves for subsequent engineering design. The following briefly introduces the characteristics of several grates. Characteristics of waste incineration grates The waste incineration grate is mainly composed of reciprocating moving parts. The garbage is pushed onto the grate through the feeding device and heated at high temperature in the furnace, so that part of the garbage can be dried, and the movement of the grate pushes the garbage forward. At the same time, the garbage layer is loosened, and the fuel (garbage) is evenly passed through various stages such as drying, ignition, combustion and burnout to make it completely burned. There are many types of grates in the mechanical grate incinerator. The main ones currently used are reverse push grate, forward push grate, drum grate, etc.; their main function is to make the grate reciprocate mechanically, thereby driving the movement and flipping of domestic garbage. At present, the main mechanical grate incinerators used at home and abroad include Germany's Martin grate furnace technology, Japan's Hitachi Shipbuilding grate furnace technology, etc. These technologies have different structural forms and characteristics in their core grate parts. The common problems are: coking and soot may adhere to the furnace wall, affecting the service life of the equipment. At the same time, garbage will accumulate on both sides of the grate near the inner wall of the furnace wall, resulting in reduced garbage disposal efficiency. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a side wall structure for a garbage grate furnace.

[0004] The technical solution of the utility model is: a side wall structure for a garbage grate furnace, comprising a furnace body, a grate arranged in the furnace body and a grate bracket, wherein the furnace body is provided with a feed port, a discharge port and a smoke exhaust port.

[0005] The grate from the feed port to the discharge port of the furnace body is arranged downwardly in an inclined manner, and the grate includes a plurality of first grate plates and second grate plates arranged alternately, wherein the first grate plates are fixed to the inner wall of the furnace body, and the second grate plates are fixed to the grate bracket.

[0006] A telescopic driving device for driving the grate support to reciprocate is provided in the furnace body, the telescopic driving device is fixed outside the furnace body, and the grate support is slidably connected to the inner wall of the furnace body;

[0007] The furnace body is divided into a drying zone, a combustion zone and a burnout zone in sequence from the feed port to the discharge port. The furnace body located in the combustion zone is composed of an inner refractory layer, a middle hollow layer and an outer heat insulation layer.

[0008] Furthermore, a slide groove is provided on the refractory layer, and a cleaning mechanism is provided in the side wall of the furnace body located in the combustion zone, the cleaning mechanism includes two cleaning rods perpendicular to the ground and used for cleaning the refractory layer, and a gear member arranged in the hollow layer, the cleaning rod includes a first cleaning rod and a second cleaning rod, the gear member includes a gear rotatably connected to the refractory layer, and a first gear rod and a second gear rod located on both sides of the gear and both meshing with the gear for transmission, the first gear rod is limitedly slidably connected to the heat insulation layer, and the second gear rod is limitedly slidably connected to the refractory layer;

[0009] The first gear rod is connected to the first cleaning rod via a first connecting rod, the second gear rod is connected to the second cleaning rod via a second connecting rod, both the first connecting rod and the second connecting rod pass through the slide groove; the first cleaning rod is fixed to the second furnace plate.

[0010] Description: Through the above-mentioned arrangement, a cleaning mechanism can be provided to address the problems of excessive coking and ash in the combustion zone inside the furnace body. The cleaning mechanism can drive the first cleaning rod and the second cleaning rod to move while the second furnace plate moves back and forth to push the garbage to the discharge port, thereby scraping off the attachments on the inner wall of the furnace body and playing the role of maintaining the equipment.

[0011] Furthermore, a push block for pushing garbage toward the inside of the furnace body is provided in the furnace body, a groove for placing the push block is provided on the inner wall of the refractory layer, the push block is connected to the groove through a spring, a shaft is provided on the gear, the shaft is rotatably connected to the refractory layer through a connecting block, a cam is provided on the shaft, a push rod is provided on the push block, one end of the push rod is connected to the push block, and the other end passes through the refractory layer and is intermittently pushed and moved by the cam.

[0012] Description: The setting of the push block can solve the problem of garbage accumulation on both sides of the grate near the inner wall of the furnace wall. Through the setting of the push block, while cleaning the inner wall of the furnace body, the push rod and the push block can be intermittently pushed by the rotation of the gear. The push rod realizes reciprocating push under the action of the cam and the spring.

[0013] Furthermore, the telescopic drive device adopts a hydraulic telescopic device.

[0014] Note: The above hydraulic telescopic equipment has better performance.

[0015] Furthermore, an exhaust fan for blowing air toward the grate is provided below the combustion zone and the ember burning zone.

[0016] Note: Through the above settings, the combustion effect in the furnace body can be better and the exhaust route can be better.

[0017] Furthermore, the refractory layer is made of silicon carbide bricks, and the heat insulation layer is made of ceramic fiber bricks.

[0018] Description: The above silicon carbide bricks can withstand the harsh conditions of high temperature and mechanical wear, and the insulating ceramic fiber bricks reduce heat loss, improve thermal energy utilization, and protect the external structure from excessive temperature.

[0019] The beneficial effects of the utility model are:

[0020] The utility model can provide a cleaning mechanism to solve the problems of much coking and soot in the combustion zone of the furnace body. The cleaning mechanism can drive the first cleaning rod and the second cleaning rod to move while the second grate plate moves back and forth to push the garbage to the discharge port, so as to scrape off the attachments on the inner wall of the furnace body, thereby playing the role of maintaining the equipment. The setting of the push block can solve the problem of garbage accumulation on the inner wall of the furnace wall near the two sides of the grate. The setting of the push block can intermittently push the push rod and the push block by the rotation of the gear while cleaning the inner wall of the furnace body. The push rod can reciprocate under the action of the cam and the spring, and pushes the garbage on the two sides of the grate to the center, so that it can be fully burned and the garbage can be prevented from adhering to and scraping the inner wall of the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall internal structure of Embodiment 1 of the present utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of the cleaning mechanism and the furnace body of Example 1 of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the grate cleaning mechanism of Example 1 of the utility model;

[0024] Figure 4 It is a schematic diagram of part of the internal structure of Example 2 of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the grate cleaning mechanism of Example 2 of the utility model;

[0026] Among them, 1-furnace body, 11-smoke exhaust port, 12-feed port, 13-discharge port, 14-telescopic drive device, 15-refractory layer, 16-insulating layer, 17-hollow layer, 2-drying area, 3-combustion area, 4-burning area, 5-grate, 51-second grate, 52-first grate, 53-grate bracket, 6-cleaning mechanism, 61-first cleaning rod, 611-slide, 62-second cleaning rod, 63-second gear rod, 64-first gear rod, 65-gear, 651-shaft rod, 652-connecting block, 66-push block, 661-push rod, 67-cam. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with specific implementation methods to better reflect the advantages of the present invention.

[0028] Example 1: Figure 1-Figure 3 As shown, a side wall structure for a garbage grate furnace comprises a furnace body 1, a grate 5 arranged in the furnace body 1 and a grate support 53, wherein the furnace body 1 is provided with a feed port 12, a discharge port 13 and a smoke exhaust port 11, and the grate 5 from the feed port 12 to the discharge port 13 of the furnace body 1 is arranged to be inclined downward, with an inclination angle of 25°, and the grate 5 comprises a plurality of first grate plates 52 and second grate plates 51 arranged alternately, wherein the first grate plates 52 are fixed to the inner wall of the furnace body 1, and the second grate plates 51 are fixed to the grate support 53,

[0029] A telescopic driving device 14 for driving the grate support 53 to reciprocate is provided in the furnace body 1. The telescopic driving device 14 is fixed outside the furnace body 1 and is commercially available.

[0030] The grate support 53 is slidably connected to the inner wall of the furnace body 1;

[0031] like Figure 1 As shown, the furnace body 1 is divided into a drying zone 2, a combustion zone 3 and a burnout zone 4 from the feed port 12 to the discharge port 13.

[0032] like Figure 2 As shown, the furnace body 1 located in the combustion zone 3 is composed of an inner refractory layer 15, a middle hollow layer 17 and an outer heat insulation layer 17, and a slide groove 611 is provided on the refractory layer 15.

[0033] like Figure 3As shown, a cleaning mechanism 6 is provided in the side wall of the furnace body 1 located in the combustion zone 3, and the cleaning mechanism 6 includes two cleaning rods perpendicular to the ground and used for cleaning the inner wall of the refractory layer 15, and a gear member arranged in the hollow layer 17, the cleaning rods include a first cleaning rod 61 and a second cleaning rod 62, the gear member includes a gear 65 rotatably connected to the refractory layer 15, and a first gear rod 64 and a second gear rod 63 located on both sides of the gear 65 and both meshing with the gear 65 for transmission, the first gear rod 64 is limitedly slidably connected to the thermal insulation layer 17, and the second gear rod 63 is limitedly slidably connected to the refractory layer 15;

[0034] The first gear rod 64 is connected to the first cleaning rod 61 through a first connecting rod, the second gear rod 63 is connected to the second cleaning rod 62 through a second connecting rod, and both the first connecting rod and the second connecting rod pass through the slide slot 611; the first cleaning rod 61 is fixed to the second furnace plate 51;

[0035] The telescopic drive device 14 is a commercially available hydraulic telescopic device; exhaust fans for blowing air to the grate 5 are provided below the combustion zone 3 and the ember zone 4; the refractory layer 15 is made of silicon carbide bricks, and the heat insulation layer 17 is made of ceramic fiber bricks.

[0036] The working principle of the above equipment is:

[0037] First, the incinerated garbage is poured into the drying area 2 of the furnace body 1 through the feed port 12 for drying, and then enters the combustion area 3 to start combustion. At the same time, the hydraulic telescopic equipment is started to push and drive the grate bracket 53 and the second grate plate 51 to extend and reciprocate. The reciprocating push of the second grate plate 51 drives the first cleaning rod 61 to move back and forth, and the first cleaning rod 61 drives the first gear rod 64 to move back and forth. The first gear rod 64 drives the second gear rod 63 to move in the opposite direction of the first gear rod 64 through the gear 65, and then the second gear rod 63 drives the second cleaning rod 62 to move back and forth in the direction opposite to the first cleaning rod 61, so as to clean the coke and other attachments on the inner wall of the furnace body 1.

[0038] Example 2: Figure 4-Figure 5 As shown, this embodiment is basically the same as embodiment 1, and differs therefrom in that a push block 66 for pushing garbage to move toward the inside of the furnace body 1 is provided in the furnace body 1, a groove for placing the push block 66 is provided on the inner wall of the refractory layer 15, the push block 66 is connected to the groove through a spring, a shaft rod 651 is provided on the gear 65, the shaft rod 651 is rotatably connected to the refractory layer 15 through a connecting block 652, a cam 67 is sleeved on the shaft rod 651, a push rod 661 is provided on the push block 66, one end of the push rod 661 is connected to the push block 66, and the other end passes through the refractory layer 15 and is intermittently pushed and moved by the cam 67.

[0039] The working method of this embodiment is the same as that of embodiment 1. When the gear 65 rotates, the shaft 651 is driven to rotate at the same time. The shaft 651 drives the cam 67 to rotate. The cam 67 intermittently drives the push rod 661 and the push block 66 to move. The push block 66 moves back and forth under the action of the cam 67 and the spring, pushing the garbage on both sides of the grate 5 to the center of the grate 5, so that it can be fully burned and avoid the garbage adhering to the inner wall of the furnace body 1, or the movement of the garbage to scratch the inner wall of the furnace body 1.

Claims

1. A side wall structure for a garbage grate furnace, characterized in that: The invention comprises a furnace body (1), a grate (5) arranged in the furnace body (1), and a grate support (53); the furnace body (1) is provided with a feed inlet (12), a discharge outlet (13), and a smoke exhaust outlet (11). The grate (5) is arranged obliquely downward from the feed port (12) to the discharge port (13) of the furnace body (1), and the grate (5) comprises a plurality of first grate plates (52) and second grate plates (51) arranged alternately, wherein the first grate plates (52) are fixed to the inner wall of the furnace body (1), and the second grate plates (51) are fixed to the grate bracket (53). The furnace body (1) is divided into a drying zone (2), a combustion zone (3) and a burnout zone (4) in sequence from the feed port (12) to the discharge port (13); the furnace body (1) located in the combustion zone (3) is composed of an inner refractory layer (15), a middle hollow layer (17) and an outer heat insulation layer (16); A telescopic driving device (14) for driving a grate support (53) to reciprocate is provided in the furnace body (1); the telescopic driving device (14) is fixed outside the furnace body (1); and the grate support (53) is slidably connected to the inner wall of the furnace body (1).

2. A garbage grate furnace side wall structure as claimed in claim 1, characterized in that: The refractory layer (15) is provided with a slide groove (611), and a cleaning mechanism (6) is provided in the side wall of the furnace body (1) located in the combustion zone (3). The cleaning mechanism (6) comprises two cleaning rods perpendicular to the ground and used for cleaning the refractory layer (15), and a gear member arranged in the hollow layer (17). The cleaning rods comprise a first cleaning rod (61) and a second cleaning rod (62). The gear member comprises a gear (65) rotatably connected to the refractory layer (15), and a first gear rod (64) and a second gear rod (63) located on both sides of the gear (65) and meshing with the gear (65) for transmission. The first gear rod (64) is limitedly slidably connected to the heat insulation layer (16), and the second gear rod (63) is limitedly slidably connected to the refractory layer (15). The first gear rod (64) is connected to the first cleaning rod (61) via a first connecting rod, the second gear rod (63) is connected to the second cleaning rod (62) via a second connecting rod, and both the first connecting rod and the second connecting rod pass through the slide groove (611); the first cleaning rod (61) is fixed to the second furnace plate (51).

3. A garbage grate furnace side wall structure as claimed in claim 2, characterized in that: A push block (66) for pushing garbage toward the inside of the furnace body (1) is provided in the furnace body (1); a groove for placing the push block (66) is provided on the inner wall of the refractory layer (15); the push block (66) is connected to the groove via a spring; a shaft (651) is provided on the gear (65); the shaft (651) is rotatably connected to a connecting block (652) provided on the refractory layer (15); a cam (67) is sleeved on the shaft (651); a push rod (661) is provided on the push block (66); one end of the push rod (661) is connected to the push block (66); the other end passes through the refractory layer (15) and is intermittently pushed and moved by the cam (67).

4. A garbage grate furnace side wall structure as claimed in claim 3, characterized in that: The telescopic driving device (14) is a hydraulic telescopic device.

5. The side wall structure for a garbage grate furnace as claimed in claim 2, characterized in that: An exhaust fan for blowing air toward the grate (5) is provided below the combustion zone (3) and the ember burning zone (4).

6. The side wall structure for a garbage grate furnace according to claim 1, characterized in that: The refractory layer (15) is made of silicon carbide bricks, and the heat insulation layer (16) is made of ceramic fiber bricks.

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