Dust removal mechanism of biomass hot blast stove

Abstract

The utility model discloses a biomass hot blast stove dust removal mechanism which comprises a stove body, a hearth is arranged in the stove body, a supporting layer is installed at the bottom of the hearth, an exhaust pipe communicated with the hearth is arranged at the top of the stove body, the supporting layer is a horizontal layer and is formed by horizontally arranging a plurality of supporting rods, and toothed bars are distributed on the side walls of the supporting rods. The furnace body is provided with a driving device for driving the axis of the supporting rod to rotate. After incineration is conducted for a certain time, sufficient ash is accumulated on the corresponding supporting layer, the driving device is started, the supporting rods are driven to rotate, at the moment, the toothed rods rotate in a staggered mode and are used for stirring the ash accumulated at the bottommost part of the supporting layer, the dense ash falls to the bottom and is finally discharged through the ash discharging port, and the output power of the driving device is properly adjusted. Ash removal and feeding can be balanced, and a good incineration space is kept in the hearth all the time.

Description

Technical Field

[0001] The utility model belongs to the technical field of biomass incinerators, in particular to a dust removal mechanism of a biomass hot blast furnace. Background Art

[0002] The existing biomass incinerator is mainly a new type of hot air furnace that uses biomass fuel as fuel. Common biomass fuels include straw, sawdust, bagasse, rice bran and other organic matter formed by photosynthesis. Generally, biomass hot air furnaces do not directly use straw as fuel. Biomass fuel is actually processed products of straw, etc., and its physical form is granular. Granular incineration materials are conducive to feeding and complete combustion, and the heat generated is provided to other application ends in the form of hot air.

[0003] The equipment mainly includes a furnace body, and a furnace for incineration is arranged inside. The furnace body is made of bricks, with a feeding port on the upper part and ashes after biomass incineration at the bottom. With the continuous incineration, the ashes need to be discharged from the bottom of the furnace in time to form a larger incineration space. The biomass incineration speed is very fast. Some furnace bodies are also equipped with combustion-supporting devices to speed up the biomass incineration rate and increase the heat output at the tail end. A lot of ashes will accumulate at the bottom of the furnace in a short time. The ash discharge process cannot terminate the incineration process, and the ashes on the upper layer that are not completely burned cannot be discharged. This part of the ashes has a good preheating effect on the newly added biomass and also has a certain calorific value. Therefore, the discharge of ashes needs to start from the bottom of the furnace. Therefore, the utility model improves the bottom of the furnace body of the existing biomass incinerator, adds an incineration support frame, and the support frame can be driven. In the driving process, the completely burned ashes are separated and discharged from the furnace in time, leaving enough incineration space in the furnace. Utility Model Content

[0004] The utility model aims to provide a dust removal mechanism for a biomass hot blast furnace, which improves the bottom of the furnace body of the existing biomass incinerator and adds an incineration support frame. The support frame can be driven and the completely burned ashes can be separated during the driving process and discharged from the furnace in time, leaving enough incineration space in the furnace.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] A biomass hot blast furnace dust removal mechanism comprises a furnace body, wherein the furnace body has a furnace chamber, the side wall of the furnace chamber is an open side for inputting biomass combustion materials, a support layer is installed at the bottom of the furnace chamber, the furnace body has an ash discharge port corresponding to the bottom of the support layer, and an exhaust pipe connected to the furnace chamber is arranged at the top of the furnace body;

[0007] The support layer is a horizontal layer, formed by a plurality of support rods arranged horizontally, the side walls of the support rods are covered with gear rods, the gear rods corresponding to adjacent support rods are staggered, and the furnace body is provided with a driving device for driving the axis of the support rods to rotate.

[0008] Furthermore, the driving device is a motor and a toothed chain, the end of the support rod extends out of the furnace side wall and is sleeved with a gear, and the motor drives the gear through the toothed chain to rotate synchronously. The ends of the furnace body corresponding to the support rods are provided with mounting plates, the mounting plates are fixed to the furnace side wall, and the mounting plates have rod sleeves for the support rods to sleeve and rotate.

[0009] Furthermore, the bottom of the furnace is a conical structure, and a strip-shaped ash discharge groove is provided at the corresponding conical bottom, a screw pusher is installed in the ash discharge groove, and driven by a motor, and the end of the furnace body corresponding to the screw pusher is an ash discharge port. The bottom of the ash discharge groove is arc-shaped.

[0010] Furthermore, a guide tube is installed at the opening side position corresponding to the furnace, so as to accurately feed materials into the center of the furnace.

[0011] The utility model has the following beneficial effects: the support layer is located at the bottom of the furnace, which is an overhead structure, and the bottom is an ash area for accommodating the ashes after burning. The support rods are arranged horizontally in sequence, and the side walls have tooth rods, which are staggered to form a dense structure for supporting biomass incineration materials for burning. First, the incineration is carried out. After a certain period of incineration, sufficient ashes are accumulated on the corresponding support layer, and the driving device is started to drive the support rods to rotate. At this time, the tooth rods are staggered and rotated to move the ashes accumulated at the bottom of the support layer, so that the dense ashes fall to the bottom and are finally discharged through the ash discharge port. The output power of the driving device is appropriately adjusted to achieve a balance between deashing and feeding, and a good incineration space is always maintained in the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0013] Figure 1 : Schematic diagram of the structure of the utility model.

[0014] Figure 2 : Schematic diagram of the disassembled structure of the support layer of the utility model.

[0015] Figure 3 : Schematic diagram of the support layer installation structure of the utility model.

[0016] In the accompanying drawings, the components represented by the various reference numerals are listed as follows: furnace body 1, furnace chamber 11, ash discharge port 12, support rod 2, gear rod 21, gear 22, mounting plate 23, ash discharge trough 13, screw pusher 4, guide tube 3. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] like Figure 1-3 As shown: a biomass hot blast furnace dust removal mechanism, including a furnace body 1, the furnace body is two layers of inorganic bricks, the furnace body 1 is provided with a furnace 11, the cross section of the furnace is a square structure, used to accommodate biomass incineration material for incineration, the side wall of the furnace 11 is an open side, used to put in biomass incineration material, the bottom of the furnace 11 is installed with a support layer, the furnace body 1 has an ash discharge port 12 at the bottom of the corresponding support layer, and the top of the furnace body 1 is provided with an exhaust pipe connected to the furnace 11; the opening side of the furnace body is a single-sided opening of the side wall, the opening side is located in the middle of the side wall, not only for putting in biomass incineration material, but also for air to enter, the top of the furnace is a dome structure, which is convenient for airflow convergence, and the exhaust pipe is also provided with a negative pressure suction device, which is used to ensure unidirectional flow of air and promote sufficient air to enter the opening side to ensure incineration.

[0019] The support layer is a horizontal layer, which is formed by a plurality of support rods 2 arranged horizontally. The side walls of the support rods 2 are covered with tooth rods 21. The tooth rods 21 corresponding to the adjacent support rods 2 are arranged in a staggered manner. The furnace body 1 is provided with a driving device for driving the axis of the support rods 2 to rotate. The support layer is located at the bottom of the furnace and is an overhead structure. The bottom is an ash area for accommodating the ashes after burning. The support rods are arranged horizontally in sequence, and the side walls have tooth rods. After staggering, a dense structure is formed to support the biomass incineration material for burning. Incineration is first performed. After a certain period of burning, sufficient ashes are accumulated on the corresponding support layer. The driving device is started to drive the support rods to rotate. At this time, the tooth rods are staggered and rotated to move the ashes accumulated at the bottom of the support layer, so that the dense ashes fall to the bottom and are finally discharged through the ash discharge port. The output power of the driving device is appropriately adjusted to achieve a balance between deashing and feeding, and a good burning space is always maintained in the furnace.

[0020] The staggered structure formed by the tooth rods on the supporting layer helps to lift the materials, facilitate air entry and improve the incineration efficiency.

[0021] like Figure 1-2 As shown: the driving device is a motor and a toothed chain, the end of the support rod 2 extends out of the side wall of the furnace body 1 and is sleeved with a gear 22. The motor drives the gear 22 through the toothed chain to rotate synchronously. The toothed chain simultaneously sleeves multiple gears, which is used to drive multiple support rods to rotate simultaneously through a single motor. The ends of the furnace body 1 corresponding to the support rod 2 are provided with mounting plates 23, which are fixed to the side wall of the furnace body 1. The mounting plates 23 have rod sleeves for the support rod 2 to sleeve and rotate. It is used to ensure stable rotation of the support rod.

[0022] like Figure 2 As shown: the bottom of the furnace 11 is a conical structure, and a strip-shaped ash discharge groove 13 is opened at the corresponding conical bottom. A screw pusher 4 is installed in the ash discharge groove 13, which is driven by a motor. The end of the furnace body 1 corresponding to the screw pusher 4 is an ash discharge port 12. It is used for automatic ash discharge, and the ash is discharged through the ash discharge port of the furnace body to maintain sufficient storage space at the bottom of the furnace. The bottom of the ash discharge groove 13 is arc-shaped.

[0023] like Figure 1 As shown: A guide pipe 3 is installed at the opening side corresponding to the furnace 11, which is used to accurately feed materials to the center of the furnace 11. The guide pipe is installed obliquely, and the upper opening side corresponds to the conveyor belt. The feeding rate is adjusted by controlling the running speed of the conveyor belt.

[0024] This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention.

Claims

1. A dust removal mechanism for a biomass hot blast furnace, characterized in that: The invention comprises a furnace body (1), wherein the furnace body (1) has a furnace (11) inside, the side wall of the furnace (11) is an open side for inputting biomass incineration materials, a support layer is installed at the bottom of the furnace (11), the furnace body (1) has an ash discharge port (12) corresponding to the bottom of the support layer, and the top of the furnace body (1) is provided with an exhaust pipe connected to the furnace (11); The support layer is a horizontal layer, formed by a plurality of support rods (2) arranged horizontally, the side walls of the support rods (2) are covered with toothed rods (21), the toothed rods (21) corresponding to adjacent support rods (2) are arranged in a staggered manner, and the furnace body (1) is provided with a driving device for driving the axis of the support rods (2) to rotate.

2. According to claim 1, a biomass hot blast furnace dust removal mechanism is characterized in that: The driving device comprises a motor and a toothed chain. The end of the support rod (2) extends out of the side wall of the furnace body (1) and is sleeved with a gear (22). The motor drives the gear (22) through the toothed chain to rotate synchronously.

3. According to claim 2, a biomass hot blast furnace dust removal mechanism is characterized in that: The ends of the furnace body (1) corresponding to the support rods (2) are each provided with a mounting plate (23), the mounting plate (23) being fixed to the side wall of the furnace body (1), and the mounting plate (23) having a rod sleeve for the support rod (2) to be sleeved and rotated.

4. The dust removal mechanism of a biomass hot blast furnace according to claim 1, characterized in that: The bottom of the furnace (11) is a conical structure, and a strip-shaped ash discharge groove (13) is provided at the corresponding conical bottom. A screw pusher (4) is installed in the ash discharge groove (13) and is driven by a motor. The end of the furnace body (1) corresponding to the screw pusher (4) is an ash discharge port (12).

5. A dust removal mechanism for a biomass hot blast furnace according to claim 4, characterized in that: The bottom of the ash discharge trough (13) is arc-shaped.

6. The dust removal mechanism of a biomass hot blast furnace according to claim 1, characterized in that: A guide tube (3) is installed at a position on the opening side corresponding to the furnace (11) for accurately feeding materials into the center of the furnace (11).

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