CN207729598U - A kind of vertical axle rotating type waste incinerator - Google Patents

Abstract

The utility model provides a vertical shaft rotary garbage incinerator, the incinerator comprises: a furnace body and a grate fixed at the lower part inside the furnace body; The multi-layer ring grids are stacked coaxially in a tower shape. The multi-layer ring grids are fixedly connected to the bracket, and the bracket is connected to the rotating shaft through bearings. The central axis of the multi-layer ring grid coincides with the axis of the rotating shaft. The lower end is fixedly connected with the supporting frame, and the lower part of the furnace body is fixedly connected with the supporting frame. The utility model provides a vertical-axis rotary garbage incinerator. By coaxially setting the multi-layer annular grid plates of the fire grate, the slag discharge and air supply can be relatively independent without affecting each other, and the falling ash and slag can be avoided. The conveyed wind causes blockage, which can not only discharge ash smoothly, but also allow the conveyed wind to enter the furnace smoothly, so as to provide the required air in time for the furnace, which can make the furnace burn more fully and improve the combustion efficiency.

Description

A vertical shaft rotary waste incinerator

technical field

The utility model relates to the technical field of solid waste pyrolysis incineration equipment, in particular to a vertical-axis rotary garbage incinerator.

Background technique

At present, there are two main ways to deal with domestic waste in small and medium-sized cities. One is landfill treatment, which is far from meeting the needs of urbanization and development; the other is to use a relatively large daily treatment capacity. Grate furnace or fluidized bed waste incineration complete equipment technology, this technology is highly feasible, but extremely uneconomical, not only high investment, large floor area, but also high energy consumption and high cost of operation, which is a waste of social equipment resources .

With the continuous advancement of science and technology, a vertical garbage incinerator has appeared on the market, which includes a rotary furnace cover, a fixed furnace body, a rotary grate and a blower, and a feeding device is provided on the rotary furnace cover. However, this structure The vertical garbage incinerator has the following disadvantages: the setting of the rotary furnace cover is to make the input garbage evenly dispersed in the furnace body, but it also brings a lot of inconvenience to the operation, especially the fume seal in the furnace body is not tight , easy to cause secondary pollution; in addition, the setting of the rotary grate is also to disperse the garbage evenly. The lower part is blocked and affects the problem of air intake at the bottom, thus affecting the use of the incinerator.

Most of the existing garbage incinerators have the problem that the slag discharge in the furnace and the air supply interact with each other, resulting in unsmooth air supply and insufficient combustion in the furnace.

Utility model content

The utility model provides a method for overcoming the problem that most of the existing garbage incinerators have mutual influence between slag discharge and air supply in the furnace, resulting in unsmooth air supply and insufficient combustion in the furnace or at least partly solving the above problems. A vertical shaft rotary garbage incinerator.

According to the utility model, there is provided a vertical shaft rotary garbage incinerator, which includes: a furnace body and a fire grate fixed at the lower part inside the furnace body; Support frame; the multi-layer annular grid plate is coaxially arranged in a tower-shaped stack, the multi-layer annular grid plate is fixedly connected with the support, the support is rotationally connected with the rotating shaft through a bearing, and the multi-layer annular grid plate The central axis of the annular grid coincides with the axis of the rotating shaft, the lower end of the rotating shaft is fixedly connected to the supporting frame, and the lower part of the furnace body is fixedly connected to the supporting frame.

On the basis of the above solution, a vertical-axis rotary garbage incinerator also includes: a furnace cover located at the upper end of the furnace body and a feed inlet vertically penetrating through the furnace cover; the cross-sectional shape of the feed inlet is It is trapezoidal, and the upper base of the trapezoid is close to the center of the furnace cover, and the lower base of the trapezoid is close to the outer periphery of the furnace cover.

On the basis of the above solution, a vertical shaft rotary garbage incinerator further includes: a frequency conversion grate motor; of the exterior.

On the basis of the above solution, a vertical shaft rotary garbage incinerator also includes: several ash scrapers; the several ash scrapers are evenly arranged on the side wall of the furnace body along the circumferential direction of the furnace body Above, one end of the several soot scrapers is located outside the furnace body, and the other ends of the several soot scrapers extend into the interior of the furnace body and are located below the fire grate.

On the basis of the above solution, a vertical shaft rotary garbage incinerator also includes: an air supply device; the air outlet duct of the air supply device extends from the bottom of the furnace body into the interior of the furnace body, and the outlet The air duct is arranged at the central axis of the grate, and the air outlet of the air outlet duct faces upward.

On the basis of the above scheme, a vertical-axis rotary garbage incinerator also includes: a furnace base, a rotary platform, and a frequency conversion furnace base motor; The furnace base is rotatably connected, the rotary platform is sleeved on the outside of the furnace base, the furnace body is fixedly connected to the rotary platform, the furnace base is fixedly connected to the frequency conversion furnace base motor, and the frequency conversion furnace The seat motor is connected in transmission with the lower part of the furnace body, the lower end of the furnace seat is fixedly connected with the support seat, and the support seat is fixedly connected with the equipment foundation.

On the basis of the above solution, the furnace cover is connected to the upper end of the furnace body through a water seal, and the furnace cover is fixedly connected to the equipment foundation.

On the basis of the above solution, a vertical shaft rotary garbage incinerator also includes: a flue gas outlet and a scraper slag remover; the flue gas outlet is arranged on the furnace cover, and the scraper slag remover is arranged on Below the furnace body.

The utility model provides a vertical-axis rotary garbage incinerator. By coaxially setting the multi-layer annular grid plates of the fire grate, the ash and slag can fall from the edge of the multi-layer annular grid plates, and when the wind is conveyed from the bottom of the furnace, It can greatly reduce the resistance of the conveying air, make the slag discharge and air supply relatively independent without affecting each other, and avoid the falling ash and slag from blocking the conveying wind, which can not only discharge the ash smoothly, but also make the conveying wind unobstructed Into the furnace, so as to provide the required air in time for the furnace, so that the furnace can burn more fully and improve the combustion efficiency.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of a vertical-axis rotary garbage incinerator according to an embodiment of the present invention;

Fig. 2 is a top view of a vertical-axis rotary garbage incinerator according to an embodiment of the present invention;

Fig. 3 is a structural schematic diagram of a grate in a vertical-axis rotary garbage incinerator according to an embodiment of the utility model;

Fig. 4 is a top view of a grate in a vertical-axis rotary garbage incinerator according to an embodiment of the present invention.

Explanation of reference signs:

1—feeding bin; 2—feeding device; 3—furnace cover;

4—furnace body; 5—fire grate; 6—furnace base;

7—support seat; 8—outrigger; 9—rotary platform;

10—scraper slag remover; 11—support; 12—multi-layer ring grid;

13—support; 14—rotating shaft; 15—feed inlet;

16—support frame; 17—frequency conversion grate motor; 18—dust scraper;

19—flue gas outlet.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is described in further detail. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

This embodiment provides a vertical-axis rotary garbage incinerator based on the utility model. Refer to Figure 1 and Figure 2 for a schematic diagram of the overall structure of the incinerator. The incinerator includes: a furnace body 4 and a lower furnace fixed inside the furnace body 4 Row 5; with reference to Fig. 3, described fire grate 5 comprises multi-layer annular grid plate 12, support 13, rotating shaft 14 and support frame 16; The multi-layer annular grid plate 12 is fixedly connected with the support 13, and the support 13 is rotationally connected with the rotating shaft 14 through a bearing. The central axis of the multi-layer annular grid plate 12 coincides with the axis of the rotating shaft 14, The lower end of the rotating shaft 14 is fixedly connected with the support frame 16 , and the lower part of the furnace body 4 is fixedly connected with the support frame 16 .

In the vertical shaft rotary garbage incinerator provided in this embodiment, a fire grate 5 is arranged at the lower part inside the furnace body 4 for discharging slag, and the multi-layer annular grid plates 12 of the fire grate 5 are arranged coaxially. The multi-layer annular grid plates 12 in the fire grate 5, that is, a plurality of annular grid plates are arranged in layers. The multi-layer annular grid plates 12 are stacked in a tower shape. The central axes of the multi-layer annular grid plates 12 coincide and are on the same axis.

The multi-layer annular grid plate 12 is fixedly connected with the bracket 13 . Specifically, the bracket 13 is located below the multi-layer annular grid 12 , and the bracket 13 is fixedly connected to the bottom surface of the bottom grid of the multi-layer annular grid 12 . The bracket 13 is rotatably connected with the rotating shaft 14 through a bearing. Specifically, the rotating shaft 14 is a cylinder with bearings sheathed on the outer side. The bracket 13 is fixedly connected with the outer side wall of the bearing.

The rotating shaft 14 is arranged along the direction of the central axis of the multi-layer annular grid plate 12 . The bracket 13 is integrated with the multi-layer annular grid plate 12 and can rotate around the rotating shaft 14 .

The rotating shaft 14 is fixedly connected with the supporting frame 16 . The support frame 16 is fixedly connected with the bottom of the furnace body 4 . The support frame 16 can be a single or multiple cross beams arranged under the inside of the furnace body 4 , and the two ends of the beams are fixedly connected to the furnace body 4 . The lower end of the rotating shaft 14 is fixedly connected with the support frame 16 , which plays a role of fixing and supporting the multi-layer annular grid plate 12 .

Further, a cap may be provided above the topmost annular grid plate, the cap is located above the central circle surrounded by the topmost annular grid plate, and the cap covers the circle in the middle of the topmost annular grid plate, and There is an interval between the block cap and the topmost annular grid plate in the vertical direction. Like this, the ash that falls from inside body of heater 4 all falls on the ring-shaped grid plate of the top floor through the cap, and can not fall to the middle part of the ring-shaped grid plate.

Further, among any two adjacent layers of annular grid plates, the diameter of the annular grid plate located on the lower layer should be larger than that of the annular grid plate located on the upper layer, and should not be too large. There should be only intervals in the up and down directions between adjacent two layers of annular grid plates, and there should be no gaps in the horizontal direction. In this way, the layer-by-layer arrangement between the multi-layer ring grids 12 can make the ash fall from the edge of the ring grids to the ring grids of the next layer, until finally the bottom layer of the ring grids The edge of the board falls off.

Further, the outer diameter of the lowest annular grid plate should be the inner diameter of the furnace body 4, so that the ash can be smoothly dropped and discharged from the edge of the lowest annular grid plate.

In this embodiment, the multi-layer annular grid plates 12 are coaxially arranged, which is different from the eccentric arrangement of the axes of each layer of grid plates of the grate 5 in the prior art. In the prior art, the central axes of the grid plates of each layer, that is, the rotating shaft, are set eccentrically, and the ash and slag are dropped and discharged from the gaps between the grid plates of each layer. Generally, the air supply is delivered from the bottom of the furnace body 4, and the wind flows from the furnace The bottom of the body 4 must pass through the slag area to be transported into the furnace, which will cause the slag discharge route and the air supply route to be the same channel. In this way, the falling ash will block the air volume conveyed, making the air supply unsmooth, and the conveyed wind cannot reach the furnace in time, thereby affecting the full combustion in the furnace.

In this embodiment, the multi-layer annular grid plates 12 are arranged coaxially. The central axis and the rotation axis of each layer of annular grid plates are coincident. In this way, the ash in the furnace falls layer by layer from the edge of the multi-layer annular grid plate 12 until it falls from the edge of the bottommost annular grid plate and is discharged from the furnace body 4 . There is no ash and slag falling at the central part of the multi-layer annular grid plate 12. For the general situation of air supply from the bottom of the furnace, the air transported will greatly reduce the resistance encountered during the ascent process, thereby making the ventilation smooth.

In the vertical shaft rotary garbage incinerator provided in this embodiment, by coaxially setting the multi-layer annular grid 12 of the fire grate 5, the ash and slag can fall from the edge of the multi-layer annular grid 12, When the wind is conveyed at the bottom, the resistance of the conveying wind can be greatly reduced, so that the slag discharge and the air supply are relatively independent without affecting each other, and the falling ash and slag can be avoided from blocking the conveying wind. The wind can enter the furnace smoothly, so as to provide the required air in time for the furnace, which can make the combustion in the furnace more complete and improve the combustion efficiency.

On the basis of the above embodiments, further, referring to FIG. 2 , a vertical-axis rotary garbage incinerator also includes: a furnace cover 3 located at the upper end of the furnace body 4 and a feed material that vertically penetrates the furnace cover 3 Inlet 15; the cross-sectional shape of the feed inlet 15 is trapezoidal, and the upper base of the trapezoid is close to the center of the furnace cover 3, and the lower base of the trapezoid is close to the outer periphery of the furnace cover 3.

In the vertical-axis rotary garbage incinerator provided in this embodiment, the feed inlet 15 is arranged in a trapezoidal structure, and the upper bottom of the trapezoid faces toward the center of the furnace cover 3 . Arranging the feed inlet 15 in this way can make the material that is put into the incinerator be distributed more evenly in the furnace, which is conducive to the uniform and complete combustion of the material.

This is because the furnace body 4 of a general incinerator is cylindrical, and the cross section of the furnace body 4 is circular. For a circle, the circumference of the concentric circles is the longer the circumference of the outer circle. Correspondingly, for a cylindrical shape, the volume near the outer portion is relatively larger than that near the central portion.

For conventional incinerators, the feed port 15 is generally rectangular. The traditional incinerator does not distinguish between the central part and the outer part of the furnace body 4 when feeding materials, and the materials put in the central part and the outer part of the furnace body 4 are equal. This will cause the materials located in the central part of the furnace body 4 to be relatively concentrated and dense, which will lead to uneven distribution of materials in the furnace body 4, and the materials at this position are prone to insufficient combustion.

In this embodiment, the feed inlet 15 is set in a trapezoidal shape, and the upper base of the trapezoidal shape faces the center of the furnace cover 3 . Referring to Fig. 2, looking down from the top of the incinerator, the shape of the feed port 15 on the furnace cover 3 is specifically: the furnace cover 3 is circular, the feed port 15 is trapezoidal, and the opening length of the feed port 15 is from the furnace cover 3. Cover 3 increases gradually from the center to the edge.

Like this, when putting in material, the material that puts into the center part of furnace body 4 will be less than the material near the outside. Such distribution of materials conforms to the shape of the furnace body 4, which can make the materials more evenly distributed in the furnace body 4, and is conducive to uniform and sufficient combustion.

Further, the upper base of the trapezoid refers to the shorter side of the two parallel sides of the trapezoid. The lower base of the trapezoid refers to the longer side of the two sides parallel to each other in the trapezoid.

A kind of vertical shaft rotary type garbage incinerator provided in this embodiment, by setting the cross-sectional shape of the feed inlet 15 as a trapezoid, and making the upper bottom edge of the trapezoid face the center of the furnace cover 3, the waste that is thrown into the furnace body 4 can be made The part of the material near the center of the furnace body is more than the part near the outside, so that the material is distributed reasonably and evenly in the furnace body 4, which ensures the uniformity of the distribution of the fed material, avoids the local accumulation of the material, and thus ensures the stability of the incineration working condition. Reducing the thermal ignition loss rate of ash and slag is beneficial to the uniform and sufficient combustion in the furnace body.

Further, the shape of the feed opening 15 can also be other shapes, not limited to trapezoidal, and there is no limitation to this, so that the materials thrown in the outer part of the furnace body are more than those near the central part.

Furthermore, a vertical-shaft rotary waste incinerator can be used in cement kilns for co-processing domestic waste. The incinerator can be combined with the cement kiln in the form of an offline furnace, which can completely realize the harmless and resourceful use of waste, and has little impact on the normal operation of the cement kiln.

On the basis of the above embodiments, further, a vertical shaft rotary garbage incinerator further includes: a frequency conversion grate motor 17; 17 is fixedly installed on the outside of the furnace body 4 .

This embodiment is based on the above embodiments, and a frequency conversion grate motor 17 is added on the basis of the vertical shaft rotary garbage incinerator provided in the above embodiments. Referring to FIG. 1 , the fire grate 5 is arranged at the lower part of the furnace body 4 , and is fixedly arranged at the lower part of the furnace body 4 for discharging the ash formed after the combustion of materials inside the furnace body 4 .

The fire grate 5 is connected with the transmission of the frequency conversion fire grate motor 17, that is, the fire grate 5 can be connected with the output shaft of the frequency conversion fire grate motor 17, and the frequency conversion fire grate motor 17 can drive the fire grate 5 to rotate. Specifically, the bracket 13 in the grate 5 can be connected to the frequency conversion grate motor 17 in transmission, and the frequency conversion grate motor 17 can drive the bracket 17 and the multi-layer annular grid plate 12 to rotate.

Frequency conversion grate motor 17 is positioned at the outside of body of heater 4, and is fixedly installed with the outside of body of heater 4. The frequency conversion grate motor 17 can be fixedly connected to the outside of the body of heater 4, and can also be fixedly connected to the equipment foundation outside the body of heater 4.

Wherein, a kind of feasible specific connection mode of fire grate 5 and frequency conversion fire grate motor 17 can be: this joint comprises fire grate deceleration device, small bevel gear and large bevel gear, frequency conversion fire grate motor 17 is connected with fire grate deceleration device The small bevel gear is connected, and the small bevel gear is located in the furnace body and meshes with the large bevel gear, and the large bevel gear is fixedly connected with the fire grate 5.

In this way, the power output by the frequency conversion grate motor 17 can be transmitted to the grate 5 through the meshed gears, so that the multi-layer annular grid plates 12 in the grate 5 can be rotated. The connection mode between the fire grate 5 and the frequency conversion fire grate motor 17 is not limited to the connection through gears, and the purpose of realizing the rotation of the fire grate 5 is not limited.

By setting the frequency conversion grate motor 17 to make the grate 5 rotate, the ash generated inside the furnace body 4 can be smoothly discharged, thereby ensuring the stability of operation. And the rotation of fire grate 5 is controlled by frequency conversion fire grate motor 17, can make fire grate 5 and body of heater relatively independent, can rotate independently.

On the basis of the above-mentioned embodiments, further, with reference to FIG. 4 , a vertical shaft rotary garbage incinerator also includes several ash scrapers 18; Evenly arranged on the side wall of the furnace body 4, one end of the several soot scrapers 18 is located outside the furnace body 4, and the other ends of the several soot scrapers 18 extend into the furnace The inside of the body 4 and is located below the fire grate 5 .

This embodiment is based on the above-mentioned embodiments, and a dust scraper 18 is added on the basis of the vertical-axis rotary garbage incinerator provided in the above-mentioned embodiments. One end of the soot scraper 18 is fixed on the outside of the body of heater 4, and can be connected with the outside of the body of heater 4, and can also be connected with other equipment foundations.

The ash scraper 18 is arranged at the bottom of the body of furnace 4 and below the fire grate 5 . The other end of the soot scraper 18 can extend into the furnace body 4 and can move back and forth in the horizontal direction.

During the operation of the incinerator, ash falls on the annular grid plate of the fire grate 5 and accumulates on the lower part of the furnace body 4 and below the fire grate 5 . The central portion of the lower end of the furnace body 4 is provided with an opening, and the ash accumulated at the bottom of the furnace body 4 can be discharged from the furnace body 4 through the opening in the middle, and falls into the ash slag tank.

A soot scraper 18 is arranged below the fire grate 5, and the soot scraper 18 can be moved to the inside of the furnace body 4, and the soot scraper 18 can push the accumulated ash to drop from the opening in the middle. By setting the ash scraper 18, the smooth ash discharge of the incinerator can be further ensured, thereby ensuring the stability of operation.

Further, the rotation speed of the grate 5 matches the length of the ash scraper 18 deep into the furnace body 4, so as to control ash discharge. The greater the speed of rotation of the grate 5, the longer the length of the ash scraper 18 deep into the inside of the body of heater 4, so that the ash removal speed will be faster.

The shape of one end of the soot scraper 18 protruding into the interior of the furnace body 4 can be a cuboid, and the end of the cuboid facing the interior of the furnace body 4 is set in a pointed shape. But this is not limited, the ash scraper 18 is mainly used to push out the ash accumulated in the lower part of the furnace body 4 from the opening in the middle, so as to achieve this effect.

Further, four ash scrapers 18 can be provided, evenly arranged around the furnace body 4, and can scrape ash on different parts of the fire grate 5. However, there is no limitation on this, and the specific quantity can be set according to the actual situation.

Further, the ash scraper 18 moves back and forth inside the furnace body 4, and the ash scraper 18 can be driven by an electric motor to move, or a manual method can be used to artificially control the ash scraper outside the furnace body 4 The promotion of 18 is not limited to this.

On the basis of the above embodiments, further, a vertical shaft rotary garbage incinerator further includes: an air supply device; the air outlet duct of the air supply device extends into the furnace body 4 from the bottom of the furnace body 4 The inside of the air outlet duct is arranged at the central axis position of the grate 5, and the air outlet of the air outlet duct faces upward.

This embodiment describes the installation of the air blower based on the above-mentioned embodiments. The air supply device is mainly used to deliver air for combustion to the interior of the furnace body 4 . The air supply device is arranged at the bottom of the furnace body 4, and conveys air from the bottom of the furnace body 4 into the furnace.

Wherein, the air supply device transports the air from the central part of the fire grate 5 and along the direction of the central axis of the fire grate 5 into the furnace. The air outlet duct of the air supply device extends into the inside of the body of heater 4 from the bottom of the body of heater 4 . The air outlet duct should be arranged in the furnace body 4 all the way to the bottom of the fire grate 5, and arranged along the direction of the central axis of the fire grate 5.

The ash and slag in the furnace will fall and accumulate on the lower part of the furnace body. In this way, the wind delivered by the air supply device will flow through the ash and slag area when it enters the interior of the furnace body 4. By exchanging heat with the ash and slag, it can The conveyed air reaches a higher temperature, so that the temperature in the furnace will not be lowered when it enters the furnace, the stability of combustion can be improved, and at the same time, the energy required for preheating the conveyed air can be saved and the cost can be saved.

Further, the structure of the fire grate 5 described in combination with the above embodiments. The fire grate 5 is to gradually drop the ash from the edge of the ring grid instead of falling from the middle of the ring grid. The wind delivered by the air supply device is delivered to the inside of the body of heater 4 through the middle of the fire grate 5 . The air supply by the air supply device and the slag discharge by the fire grate 5 operate independently, and will not affect each other.

There is no falling ash in the middle of the grate 5, so that the air delivered by the air supply device can reach the furnace smoothly, and the problem that the air delivered in the existing incinerator will be blocked by ash and the material is not fully burned can be avoided , thus ensuring unobstructed air supply, improving the stability of combustion in the furnace, and improving the processing capacity and processing effect of the gasifier.

On the basis of the above-mentioned embodiments, further, a vertical shaft rotary garbage incinerator further includes: a furnace base 6, a rotary platform 9 and a frequency conversion furnace base motor; the furnace base 6 is sleeved on the lower part of the furnace body 4 Outside, the lower part of the furnace body 4 is rotatably connected with the furnace base 6, the rotary platform 9 is sleeved on the outside of the furnace base 6, the furnace body 4 is fixedly connected with the rotary platform 9, the The furnace base 6 is fixedly connected with the frequency conversion furnace base motor, and the frequency conversion furnace base motor is connected with the lower part of the furnace body 4 in transmission, and the lower end of the furnace base 6 is fixedly connected with the support base 7, and the support base 7 is connected with the The equipment base is fixed.

Further, the furnace cover 3 is connected to the upper end of the furnace body 4 through a water seal, and the furnace cover 3 is fixedly connected to the equipment foundation.

Further, a vertical shaft rotary garbage incinerator also includes: a flue gas outlet 17 and a scraper slag remover 10, the flue gas outlet 17 is set on the furnace cover 3, and the scraper slag remover 10 is set Below the furnace body 4 .

Based on the above-mentioned embodiments, this embodiment further describes the structure of a vertical-axis rotary garbage incinerator. The furnace cover 3 is located at the upper end of the furnace body 4 . The furnace body 4 can be a cylindrical structure. A furnace seat 6 is arranged outside the lower portion of the furnace body 4 . The lower part of the furnace body 4 is rotatably connected to the furnace base 6, and can be connected through a pair of meshing gears, so that relative rotation can occur between the furnace body 4 and the furnace base 6, which is not limited.

The rotary platform 9 is arranged on the outside of the furnace base 6, and the rotary platform 9 is fixedly connected with the furnace body 4. Can not be connected between the rotary platform 9 and the stove base 6, also can be connected in rotation. When the furnace body 4 rotates, the rotary platform 9 and the furnace body 4 rotate together. Setting the rotary platform 9 can facilitate the maintenance of the incinerator or carry out some other work.

The furnace body 4 is driven by a frequency conversion furnace base motor to rotate. The frequency conversion furnace base motor is fixedly installed on the furnace base 6. There is a transmission connection between the frequency conversion furnace base motor and the furnace body 4, the frequency conversion furnace base motor can be connected with the gear set, and the gear set is driven to rotate, thereby driving the furnace body 4 to rotate, which is not limited. The rotation of the furnace body 4 can make the materials in the furnace evenly distributed, which is conducive to full combustion and improved material handling capacity.

When body of heater 4 rotates, furnace cover 3 is motionless. The upper ends of the furnace cover 3 and the furnace body 4 are connected by a water seal. And the furnace cover 3 is fixedly connected with the equipment foundation, and can be fixedly connected with the support 11 positioned at the top of the furnace body 4 . The support 11 is fixed. The furnace cover 3 remains fixed, so that the furnace cover 3 can be conveniently provided with a feed inlet 15 and a flue gas outlet 19 .

The feeding port 15 specifically includes the feeding bin 1 and the feeding device 2 . The feeding device 2 is located below the feeding bin 1 , and the feeding device 2 puts materials into the furnace body 4 . The feeding device 2 and the feeding bin 1 jointly form a feeding port 15 . The materials to be processed are placed in the feeding bin 1 first, and then are fed into the furnace body 4 under the control of the feeding device 2 .

A support base 7 is fixedly connected to the lower end of the furnace base 6, and the support base 7 is fixedly connected with the equipment foundation. The equipment base refers to some fixed existing facilities. Support leg 8 can be fixedly connected at the bottom of support seat 7, and support leg 8 is fixed on the ground. The ash discharge port and the ash slag groove at the bottom of the furnace body 4 can be conveniently placed by setting the supporting legs 8 .

The bottom of the furnace body 4 is a tapered ash discharge port, and the ash is discharged from the furnace body 4 from the ash discharge port after passing through the fire grate 5, and discharged into the ash slag tank. The ash tank is used to place the ash discharged from the body of heater 4 and is positioned on the ground below the body of heater 4 .

Below the body of furnace 4, a scraper slag remover 10 is arranged on the ash tank for cleaning the ash in the ash tank.

Further, the conical ash outlet located at the bottom of the furnace body 4 can be immersed in the water seal tank to play a role of sealing.

Further, the furnace body 4 is driven to rotate by the frequency conversion furnace seat motor, and the fire grate 5 is driven to rotate by the frequency conversion furnace grate motor 17. By adjusting the rotating speeds of the furnace body 4 and the fire grate 5 respectively, the furnace body 4 and the fire grate 5 Relatively static, rotate together, also can make furnace body 4 and fire grate 5 carry out relative rotation.

Furthermore, the specific operation process of a vertical-axis rotary garbage incinerator is as follows: the material to be processed, that is, the garbage, is put into the furnace body 4 from the trapezoidal structure feeding port 15 . The air required for combustion is delivered to the interior of the furnace body 4 through the bottom of the furnace body 4 through the middle of the fire grate 5 by the air supply device.

The furnace body 4 rotates to make the material distribution more uniform. The material is burned inside the furnace body 4 . The material is quickly dried and heated up under the action of hot air flow and radiant heat. After the organic matter in the material is heated to the pyrolysis temperature, it will be pyrolyzed in an oxygen-deficient state, and some combustible gases will be decomposed. The combustible gas rises and gathers on the top of the body of heater 4 .

Ash slag generated after material burning falls to the bottom of body of heater 4 . The ash falls down along the edge of the circular grate of the rotating grate 5, so that the wind delivered by the air supply device can absorb the heat of the ash to save energy, and at the same time the ash will not be placed on the furnace. The air supply port in the middle of row 5 causes obstruction. The rotation of the body of furnace 4 and the rotation of the fire grate 5 are independent of each other, and the rotation speeds can be set respectively.

The ash will accumulate at the bottom of the furnace body 4. At this time, the ash scraper 18 can be pushed to push the ash from the opening in the middle to ensure smooth slag removal and the stability of the incinerator operation. The ash falls from the ash discharge port into the ash tank, and is then scraped out from the ash tank by the scraper slag remover 10 .

The flue gas in the furnace is discharged from the flue gas outlet 19 located on the furnace cover 3, and can enter some subsequent preheating recovery and utilization devices for heat energy recovery, and then be discharged after being purified to the standard by the fume purification system.

According to this embodiment, a vertical shaft rotary garbage incinerator provided by the utility model can cooperate with the cement kiln to dispose of solid waste such as household garbage, carry out pyrolysis and gasification incineration of solid waste, and combine with the cement kiln to make the solid waste resources.

The incinerator is improved on the basis of the fixed-bed gasifier to overcome the problems of uneven material distribution, poor ventilation effect, and small disposal volume, making it more conducive to the co-processing of domestic waste by cement kilns.

The incinerator has the characteristics of small footprint, low investment, easy operation of garbage disposal, and stable and reliable operation. The furnace is combined with the cement kiln in the form of an offline furnace, which can completely realize the harmless and resourceful use of waste, and has little impact on the normal operation of the cement kiln. The air supply device of the furnace operates independently of the air supply and the slag discharge of the grate 5, which makes the air supply more smooth and uniform. At the same time, the improvement of the feed inlet 15 can ensure that solid waste such as garbage is evenly distributed, and the ventilation is smooth, and the processing capacity of the incinerator is improved. and processing effects.

The rotation of the furnace body 4 of the incinerator and the trapezoidal design of the feed port 15 ensure the uniform distribution of the fed garbage and avoid local accumulation of garbage, thereby ensuring the stability of the incineration working condition and reducing the thermal ignition loss rate of the ash .

Since the fire grate 5 is arranged in a pagoda-shaped stack, and the central axis of the annular grid plate is coaxial with the axis of the rotating shaft 14 of the fire grate 5, and at the same time, the air supply and the slag discharge channel are independent, the ash and slag will not block the air channel, which can ensure The air distribution is even and unobstructed.

The high-temperature exhaust gas is passed into the cement kiln for thorough treatment without secondary pollution. At the same time, the heat of the garbage is also used by the cement kiln. The combination of the gasifier and the cement kiln makes the garbage harmless and resourceful.

Finally, the method of the present application is only a preferred implementation, and is not intended to limit the protection scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (8)

1. A vertical shaft rotary garbage incinerator, characterized in that it comprises: a furnace body and a fire grate fixed at the lower part of the furnace body; the fire grate includes a multi-layer annular grid plate, a bracket, a rotating shaft and a support frame; The multi-layer annular grid plate is coaxially arranged in a tower-shaped stack, the multi-layer annular grid plate is fixedly connected with the support, the support is rotationally connected with the rotating shaft through a bearing, and the multi-layer annular grid plate The central axis of the furnace coincides with the axis of the rotating shaft, the lower end of the rotating shaft is fixedly connected with the support frame, and the lower part of the furnace body is fixedly connected with the support frame. 2. The incinerator according to claim 1, further comprising: a furnace cover positioned at the upper end of the furnace body and a feed inlet vertically penetrating through the furnace cover; the cross section of the feed inlet The shape is trapezoid, and the upper base of the trapezoid is close to the center of the furnace cover, and the lower base of the trapezoid is close to the outer periphery of the furnace cover. 3. The incinerator according to claim 1 or 2, further comprising: a frequency conversion grate motor; the grate is connected to the frequency conversion grate motor, and the frequency conversion grate motor is fixedly installed on the The exterior of the furnace body. 4. The incinerator according to claim 3, further comprising: several ash scrapers; the several ash scrapers are evenly arranged on the side of the furnace body along the circumferential direction of the furnace body On the wall, one end of the several ash scrapers is located outside the furnace body, and the other ends of the several ash scrapers extend into the interior of the furnace body and are located below the grate. 5. The incinerator according to claim 4, further comprising: an air supply device; the air outlet duct of the air supply device extends from the bottom of the furnace body into the inside of the furnace body, the The air outlet duct is arranged at the central axis of the grate, and the air outlet of the air outlet duct faces upward. 6. The incinerator according to claim 1 or 5, further comprising: a furnace seat, a rotary platform, and a frequency conversion furnace seat motor; the furnace seat is sleeved on the lower outside of the furnace body, and the furnace body The lower part is rotatably connected with the furnace base, the rotary platform is sleeved on the outside of the furnace base, the furnace body is fixedly connected with the rotary platform, and the furnace base is fixedly connected with the frequency conversion furnace base motor. The frequency conversion furnace seat motor is connected to the lower part of the furnace body in transmission, the lower end of the furnace seat is fixedly connected to the support base, and the support base is fixedly connected to the equipment foundation. 7. The incinerator according to claim 2, wherein the furnace cover is connected to the upper end of the furnace body through a water seal, and the furnace cover is fixedly connected to the equipment foundation. 8. The incinerator according to claim 7, further comprising: a flue gas outlet and a scraper slag remover; the flue gas outlet is arranged on the furnace cover, and the scraper slag remover is arranged below the furnace body.