Air distribution mechanism of particle furnace

Abstract

The utility model discloses a particle furnace air distribution mechanism which comprises a furnace body, a bottom cavity, a combustion cavity and a top cavity are sequentially arranged in the furnace body from bottom to top, the bottom cavity is connected with a blower nozzle, the blower nozzle is connected with an air blower, the top cavity is connected with a feeding machine box and a smoke outlet, a water inlet pipe and a water outlet pipe are further arranged on the furnace body, and an air distribution ring is arranged between the bottom cavity and the combustion cavity. A plurality of air passing holes are evenly distributed in the air distribution ring in the circumferential direction, the air distribution ring is further provided with a grate and a vertical guide groove, a plurality of air outlet holes are formed in the side wall of the vertical guide groove, a vertical air channel is defined between the vertical guide groove and the inner wall of the combustion cavity, and the vertical air channel is provided with a lower side opening communicated with the bottom cavity; through the design of the air passing holes circumferentially formed in the air distribution ring and the air outlet holes in the side wall of the vertical guide groove, comprehensive and sufficient air distribution in the furnace is achieved, combustion in the furnace can be fully and efficiently completed in cooperation with an air blower, and good operation of the particle furnace is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heating stove, concretely relates to a granule stove air distribution mechanism. BACKGROUND

[0002] Compared with the traditional stove, the granule stove using biomass granule fuel or fossil granule fuel needs more comprehensive and sufficient air distribution to meet the combustion requirement of the granule in the operation process, but the existing granule stove often uses high-power forced air blowing to achieve this purpose, which not only consumes more electric energy but also has room for improvement in air distribution effect, and here, a new granule stove air distribution structure is provided. SUMMARY

[0003] In view of the problems in the background art, the purpose of the utility model is to provide a granule stove air distribution mechanism which effectively solves the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A granule stove air distribution mechanism, comprising a stove body, a bottom cavity, a combustion cavity and a top cavity are sequentially arranged in the stove body from bottom to top, the bottom cavity is connected with a blast port, the blast port is connected with a blower, the top cavity is connected with a feeder box and a smoke outlet, a water inlet pipe and a water outlet pipe are further arranged on the stove body, the water inlet pipe and the water outlet pipe are connected through a flue gas heat exchange pipe, an air distribution ring is arranged between the bottom cavity and the combustion cavity, a plurality of air passing holes are uniformly distributed on the air distribution ring in the circumferential direction, a stove grate and a vertical guide groove are further arranged on the air distribution ring, a plurality of air outlet holes are arranged on the side wall of the vertical guide groove, and a vertical air duct is formed between the vertical guide groove and the inner wall of the combustion cavity, wherein the vertical air duct has a lower side opening communicated with the bottom cavity.

[0006] Further, a notch is arranged on the air distribution ring matched with the vertical guide groove, and the lower edge of the vertical guide groove is inserted into the notch.

[0007] Further, the cross section of the vertical guide groove is U-shaped, and the air outlet holes are uniformly distributed on the left and right sides of the vertical guide groove in the vertical direction.

[0008] Further, a waste heat utilization box is further arranged at the smoke outlet, the waste heat utilization box comprises a box body, two horizontal baffles are arranged in the box body, a smoke distribution cavity is formed between the lower horizontal baffle and the box body, a smoke collection cavity is formed between the upper horizontal baffle and the box body, and a heat exchange cavity is formed between the two horizontal baffles, a plurality of vertical heat exchange fins are arranged in the heat exchange cavity, smoke flow channels or air flow channels are formed between adjacent heat exchange fins, the smoke flow channels and the air flow channels are arranged at intervals, openings corresponding to the smoke flow channels are arranged on the horizontal baffles, an inlet communicated with the smoke distribution cavity and an outlet communicated with the smoke collection cavity are arranged on the upper and lower sides of the box body.

[0009] The box is further provided with a plurality of groups of air inlet pipes corresponding to the air flow channels, each group of air inlet pipes comprises two air inlet pipes symmetrically arranged and communicated with the air flow channels, the air inlet pipes are connected with the air blower at the upstream thereof, the air flow channels are horizontally provided with air baffles, the air baffles are provided with openings in the middle thereof, and the air flow channels close to the outlets of the air inlet pipes are provided with vortex generators.

[0010] Further, the vortex generator comprises a middle column and two side columns horizontally arranged, the middle column has an isosceles trapezoidal cross section and the longer side of the parallel sides of the isosceles trapezoid faces the air inlet pipe, and the side columns have circular cross sections and are symmetrically arranged on the upper and lower sides of the middle column.

[0011] The utility model has the advantages of the following beneficial effects:

[0012] The utility model discloses a comprehensive and sufficient air distribution in the furnace is realized through the air passing holes arranged in the circumferences of the air distribution rings and the air outlet holes in the vertical guide slot side walls, and the comprehensive and sufficient air distribution in the furnace can be guaranteed when the air distribution rings are used with the air blower, which is beneficial to the good operation of the pellet furnace, and the utility model has the advantages of novel design, safe and convenient use and wide application. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A front view of the utility model embodiment after removing the waste heat utilization box;

[0014] Figure 2 A schematic view of the internal structure of the utility model embodiment after removing the waste heat utilization box;

[0015] Figure 3 A Figure 2 A local enlarged view of A in the middle;

[0016] Figure 4 A schematic view of the cross section of the vertical guide slot in the utility model embodiment;

[0017] Figure 5 A front view of the internal structure of the waste heat utilization box in the utility model embodiment;

[0018] Figure 6 A right view of the internal structure of the waste heat utilization box in the utility model embodiment. DETAILED DESCRIPTION

[0019] The embodiments of the utility model will be further described in detail below in combination with the drawings and the embodiments. The following embodiments are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0020] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two;The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is the orientation or position relationship shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed in a particular orientation and be operated, therefore, it cannot be understood as a limitation on the utility model. In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, can be detachably connected, or integrally connected;It can be mechanically connected, or electrically connected;It can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0021] As Figures 1-6 Indicated, a kind of particle furnace air distribution mechanism described in the embodiment, including furnace body 1, furnace body 1 is sequentially provided with bottom cavity 2, combustion chamber 3 and top cavity 4 from bottom to top, bottom cavity 2 is connected with blast port 5, blast port 5 is connected with air blower 6, top cavity 4 is connected with feeder box 7 and smoke outlet 8, feeder box 7 includes granular fuel storage tank and spiral feeder, furnace body 1 is also provided with water inlet pipe 9 and water outlet pipe 10, water inlet pipe 9 and water outlet pipe 10 are connected by flue gas heat exchange pipe, bottom cavity 2 and combustion chamber 3 are provided with air distribution ring 11, air distribution ring 11 is uniformly distributed with multiple air-passing holes 12 along the circumference, air distribution ring 12 is also provided with furnace grate 13 and vertical guide slot 14, multiple air outlets 15 are arranged on the side wall of vertical guide slot 14, vertical guide slot 14 and the inner wall of combustion chamber 3 are combined to form vertical air duct, vertical air duct has lower side opening communicated with bottom cavity 2, air distribution ring 12 is provided with notch 16 matched with vertical guide slot 14, lower edge of vertical guide slot 14 is inserted in notch 16;The cross section of vertical guide slot 14 is U-shaped, air outlet 15 is uniformly distributed on the left and right sides of vertical guide slot 14 along vertical direction, the upper side of vertical guide slot 14 is also opened.

[0022] The heat utilization box 17 is further arranged at the smoke outlet 8, and the heat utilization box 17 comprises a box body 18, two horizontal baffles 19 are arranged in the box body 18, a smoke distribution cavity 20 is formed between the lower horizontal baffle 19 and the box body 18, a smoke collection cavity 21 is formed between the upper horizontal baffle 19 and the box body 18, and a heat exchange cavity is formed between the two horizontal baffles 19; a plurality of vertical heat exchange fins 22 are arranged in the heat exchange cavity, the vertical heat exchange fins 22 are made of stainless steel, smoke flow channels 23 or air flow channels 24 are formed between adjacent heat exchange fins 22, the smoke flow channels 23 and the air flow channels 24 are arranged at intervals, the horizontal baffle 19 is provided with openings corresponding to the smoke flow channels 23, and the box body 18 is respectively provided with an inlet communicating with the smoke distribution cavity 20 and an outlet communicating with the smoke collection cavity 21 on the upper and lower sides;

[0023] A plurality of air inlet pipe groups corresponding to the air flow channels 24 are further arranged on the box body 18, each air inlet pipe group comprises two air inlet pipes 25 arranged symmetrically and communicating with the air flow channels 24, the air inlet pipes 25 are connected to the air blower 6 upstream, an air baffle 26 is horizontally arranged in the air flow channel 24, an opening is arranged in the middle of the air baffle 26, a vortex generator 27 is arranged in the air flow channel 24 close to the outlet of the air inlet pipe 25, and specifically, the vortex generator 27 comprises a middle column and two side columns arranged horizontally, the cross section of the middle column is isosceles trapezoidal, and the longer side of the parallel sides of the isosceles trapezoid faces the air inlet pipe 25; the cross section of the side column is circular, and the two side columns are symmetrically arranged on the upper and lower sides of the middle column; the air sent by the air inlet pipe 25 forms a plurality of vortexes behind the vortex generator 27 after passing through the vortex generator 27; the vortexes formed by the air sent by the two opposite air inlet pipes 25 are broken, so that the flow state is changed to turbulent flow; the turbulent flow air passes through the opening in the middle of the air baffle 26 and then continues to flow downward, and in the process, the vertical heat exchange fins 22 and the high-temperature flue gas in the smoke flow channel 23 generate interwall heat exchange, so that the air is heated after entering the furnace to participate in combustion, which is beneficial to improving the combustion efficiency and effect; an air outlet pipe 28 communicating with the air flow channel 24 is further arranged on the box body 18, the air outlet pipe 28 is connected to the air inlet 5, and the air blower 6 blows air first through the heat utilization box 17 and then to the air inlet 5 into the furnace body.

[0024] The working principle of the embodiment is as follows:

[0025] The particle fuel supply machine box 7 sends the particle fuel into the top cavity 4 and the combustion cavity 3, the air blower 6 blows air through the air inlet 5, the air distribution ring 11 and the grate 13, the vertical air duct into the furnace body to participate in combustion in turn, the particle fuel ash falls into the bottom cavity through the grate 13, and the furnace body is provided with a cavity door corresponding to the bottom cavity, so that the ash removal operation can be performed through the cavity door; compared with the prior art, the embodiment realizes full and sufficient air distribution in the furnace through the design of the air passing holes 12 arranged in the circumferential direction of the air distribution ring 11 and the air outlet holes 15 in the side wall of the vertical guide groove 14, and the use of the air blower 6 can ensure the full and efficient completion of the combustion in the furnace, which is beneficial to the good operation of the particle furnace.

[0026] The embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments were chosen and described in order to best explain the principles of the application and its practical application, and to thereby enable others skilled in the art to best utilize the application with various modifications as are suited to the particular use contemplated.

Claims

1. A pellet mill air distribution mechanism, comprising a mill body, wherein a bottom cavity, a combustion chamber, and a top cavity are arranged sequentially from bottom to top within the mill body; the bottom cavity is connected to an air inlet, the air inlet is connected to a blower; the top cavity is connected to a feeding machine box and a flue gas outlet; the mill body is also provided with a water inlet pipe and a water outlet pipe, the water inlet pipe and the water outlet pipe being connected by a flue gas heat exchange pipe, characterized in that... An air distribution ring is provided between the bottom cavity and the combustion cavity. Multiple air passage holes are evenly distributed along the circumference of the air distribution ring. A grate and a vertical guide groove are also provided on the air distribution ring. Multiple air outlet holes are provided on the side wall of the vertical guide groove. The vertical guide groove and the inner wall of the combustion cavity enclose each other to form a vertical air duct. The vertical air duct has a lower opening that communicates with the bottom cavity.

2. The air distribution mechanism for a pellet furnace according to claim 1, characterized in that, The air distribution ring is provided with a notch that mates with the vertical guide groove, and the lower edge of the vertical guide groove is inserted into the notch.

3. The air distribution mechanism for a pellet furnace according to claim 2, characterized in that, The vertical guide groove has a U-shaped cross-section, and the air outlets are evenly distributed on the left and right sides of the vertical guide groove along the vertical direction.

4. The air distribution mechanism for a pellet furnace according to claim 1, characterized in that, A waste heat utilization box is also provided at the smoke outlet. The waste heat utilization box includes a box body, and two horizontal baffles are provided inside the box body. The lower horizontal baffle and the box body form a smoke distribution chamber, and the upper horizontal baffle and the box body form a smoke collection chamber. The space between the two horizontal baffles is a heat exchange chamber. Multiple vertical heat exchange plates are provided in the heat exchange chamber. Flue gas flow channels or air flow channels are formed between adjacent heat exchange plates. The flue gas flow channels and air flow channels are arranged at intervals. The horizontal baffles are provided with openings corresponding to the flue gas flow channels. The upper and lower sides of the box body are respectively provided with an inlet communicating with the smoke distribution chamber and an outlet communicating with the smoke collection chamber. The housing is also equipped with multiple sets of air intake pipes that correspond one-to-one with the air flow channels. Each air intake pipe set includes two symmetrically arranged air intake pipes that communicate with the air flow channels. The upstream of each air intake pipe is connected to a blower. An air baffle is horizontally arranged inside the air flow channel, with an opening in the middle of the air baffle. A vortex generator is arranged inside the air flow channel near the outlet of the air intake pipe. The housing is also equipped with an air outlet pipe that communicates with the air flow channels and is connected to the blower.

5. The air distribution mechanism for a pellet furnace according to claim 4, characterized in that, The vortex generator includes a horizontally arranged central column and two side columns. The cross-section of the central column is an isosceles trapezoid with the longer side of the parallel side of the isosceles trapezoid facing the air intake pipe. The cross-section of the side columns is circular, and the two side columns are symmetrically distributed on the upper and lower sides of the central column.

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