Hearth structure and hot blast stove and drying equipment thereof

Abstract

The utility model discloses a hearth structure and a hot blast stove and drying equipment thereof. The hearth structure comprises a cylinder structure built by refractory bricks, a protruding edge is arranged on the inner side of the bottom of the cylinder structure, a fire coal grate bridge or a replaceable grate bridge ring frame is arranged on the protruding edge, and a biomass particle grate bridge is arranged on the replaceable grate bridge ring frame. According to the hearth structure provided by the utility model, the cavity is formed in the hearth structure and the mounting grooves are formed in the two ends of the hearth structure, so that door and window profiles are thoroughly disconnected, heat transfer between indoor and outdoor profiles is blocked, a better heat insulation effect is achieved, the structure is simple, the stability and firmness of the structure are good, and the thicknesses of the profiles can be as thin as possible; processing of stainless steel profiles is met, and insertion and installation are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of drying traditional Chinese medicines, in particular to a furnace structure and a hot air furnace and drying equipment. Background Art

[0002] Chinese medicinal materials and agricultural and sideline products need to be dried before storage. In addition to using natural conditions for drying, drying rooms, hot air circulation drying boxes, flap dryers, and mesh belt dryers are the main drying equipment. Hot air furnaces are commonly used heat source providing equipment. Biomass pellet fuel effectively avoids the slagging of straw pellets during direct combustion and is widely used. The current hot air furnace cannot directly use biomass pellet fuel and needs to be connected to a biomass pellet burner. The external burner does not match the hot air furnace. It is easy for the burning slag to overflow from the gap after adaptation and enter the oven through the hot air furnace air inlet to burn the dried processed products. In addition, the external burner is too high, resulting in a reduction in the heat collection area of ​​the hot air furnace. Utility Model Content

[0003] The utility model provides a furnace structure and a hot blast furnace and drying equipment thereof. By improving the existing furnace structure, biomass particle fuel can be directly used to improve the applicability of the hot blast furnace and drying equipment using the same.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a furnace structure, including a cylindrical structure made of refractory bricks, a convex edge is arranged on the inner side of the bottom of the cylindrical structure, a coal-burning furnace bridge or a replaceable furnace bridge ring frame is arranged on the convex edge, and a biomass particle furnace bridge is arranged on the replaceable furnace bridge ring frame.

[0005] Preferably, the biomass particle furnace bridge is a cone that is larger at the top and smaller at the bottom. The upper end of the cone has an extension and also includes a support ring for placing the biomass particle furnace bridge. A switchable bottom plate is provided at the lower end of the cone.

[0006] Preferably, the coal-fired furnace bridge is provided with a plurality of straight-line holes.

[0007] Preferably, a plurality of circular holes are arranged on the cone.

[0008] A hot blast furnace comprises the above-mentioned furnace structure, a fuel inlet and a heat exchange component, wherein the fuel feed port is a coal feed port and a biomass fuel feed port which are arranged upper and lower on one side of the furnace body, the biomass fuel feed port is provided with a biomass fuel feeding mechanism, the biomass fuel feeding mechanism comprises a hopper, a spiral feeding rod and a feeding pipe, the hopper is arranged at the inlet of the spiral feeding rod, a spiral feeder outlet position is arranged at one end of the feeding pipe, and the other end is opened toward the biomass particle furnace bridge, the heat exchange component comprises a hot blast outlet, and the hot blast outlet is arranged on the other side of the lower part of the furnace body.

[0009] A drying device comprises the above-mentioned hot air furnace and an oven, wherein the oven is arranged on one side of the hot air outlet of the hot air furnace and is connected to the hot air furnace, and the heat released by the hot air furnace is transmitted to the oven, and the oven comprises an upper oven chamber and a lower oven chamber, wherein the upper oven chamber comprises a first frame supporting a sieve plate, and the lower oven chamber comprises a second frame supporting the sieve plate and a pushing mechanism for lowering the sieve plate.

[0010] Preferably, a double door is provided on one side of the upper oven chamber, and the double door is used to facilitate replacement of the sieve plate.

[0011] Preferably, a double folding door is provided on one side of the lower oven chamber, and the double folding door is used to facilitate replacement of the sieve tray under various drying modes.

[0012] Preferably, a detachable support frame is also provided on the second frame of the lower oven chamber. When the one-time loading mode is used, the support frame is placed in and the rocker is locked and immovable.

[0013] Preferably, a plurality of rows of sieve tray outlets corresponding to the lower oven sieve tray and a drug residue cleaning port are arranged at the bottom of the oven, and a dehumidification port is arranged at the top of the oven.

[0014] Beneficial effects:

[0015] The utility model adopts the above technical scheme, and by improving the furnace structure and increasing the feed port, fuel can be selected according to needs. Replacing coal with biomass is more energy-saving and environmentally friendly, and the promotion and practicability of the hot air furnace is increased; the disadvantage of the existing oven that all sieve plates of the entire oven need to be loaded and unloaded at one time is changed, and the disadvantage of the one-time upper and lower sieve plate drying mode using too few sieve plates affects the processing output, an upper oven chamber is added, and a sieve plate support frame for loading and unloading the upper and lower sieve plates is added, so as to realize the medicinal material screening and drying mode, and the overall drying efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation mode of the utility model and the beneficial effects of the utility model, the drawings required for use in the implementation mode or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some implementation modes of the utility model. For ordinary technicians in this field, other structures can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 This is a schematic structural diagram of an empty furnace in Embodiment 1 of the present utility model.

[0018] Figure 2 This is a schematic diagram of the furnace structure using biomass pellet fuel in Example 1 of the present utility model.

[0019] Figure 3 This is a schematic diagram of the structure of a coal-fired furnace in Example 1 of the present utility model.

[0020] Figure 4 This is a schematic structural diagram of a hot blast furnace according to a second embodiment of the present utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the oven of Embodiment 3 of the present utility model.

[0022] Figure 6 This is a schematic diagram of the structure of the drying equipment of the third embodiment of the present utility model.

[0023] Explanation of the accompanying figures: furnace structure-1, convex edge-2, biomass pellet furnace bridge-3, extension-4, biomass pellet furnace bridge support ring-5, coal-fired furnace bridge-6, coal-fired feeding port-7, hopper-8, spiral feeding rod-9, feeding pipe-10, hot air outlet-11, cold air inlet-12, upper oven chamber-13, lower oven chamber-14, first frame-15, second frame-16, double door-17, double folding door-18, support frame-19, rotating handle-20, sieve outlet-21, slag cleaning port-22, dehumidification port-23. DETAILED DESCRIPTION

[0024] Specific embodiments of the utility model:

[0025] Embodiment 1

[0026] See also Figure 1 , Figure 2 , Figure 3 A furnace structure 1 of this embodiment includes a cylindrical structure made of refractory bricks, a convex edge 2 is arranged on the inner side of the bottom of the cylindrical structure, a coal-fired furnace bridge or a replaceable furnace bridge ring frame is arranged on the convex edge, and a biomass particle furnace bridge is arranged on the replaceable furnace bridge ring frame.

[0027] The biomass pellet furnace bridge 3 described in this embodiment is a cone that is larger at the top and smaller at the bottom. The upper end of the cone has an extension 4 for being placed on the biomass pellet furnace bridge support ring 5. The biomass pellet furnace bridge support ring 5 of this embodiment is composed of two spliced ​​half-ring plates, and a switchable bottom plate is arranged at the lower end of the cone.

[0028] The coal-burning furnace bridge 6 of this embodiment is provided with a plurality of straight-line holes.

[0029] The cone described in this embodiment is provided with a plurality of circular holes.

[0030] Embodiment 2

[0031] See also Figure 4A hot blast furnace of the present embodiment comprises the furnace structure, fuel inlet and heat exchange component of the first embodiment, the fuel feed port is a coal feed port 7 and a biomass fuel feed port which are arranged on one side of the furnace body from top to bottom, the biomass fuel feed port is provided with a biomass fuel feeding mechanism, the biomass fuel feeding mechanism comprises a hopper 8, a screw feeding rod 9 and a feeding pipe 10, the hopper is arranged at the entrance of the screw feeding rod, a screw feeder outlet position is arranged at one end of the feeding pipe, and the other end is opened toward the biomass particle furnace bridge, the heat exchange component comprises a hot blast outlet 11, and the hot blast outlet is arranged on the other side of the lower part of the furnace body.

[0032] There are several air inlet heating pipes on the upper furnace body of the furnace. The air entering from the cold air inlet 12 of the air inlet heating pipe is heated and then drawn into the drying equipment through the hot air outlet 11 by the fan. The heat exchange component of the hot air furnace can also adopt the existing technology, which will not be repeated here.

[0033] Embodiment 3

[0034] Reference Figure 5 , Figure 6 A drying device comprises a hot air furnace and an oven of the second embodiment, wherein the oven is arranged on one side of the hot air outlet of the hot air furnace and is connected to the hot air furnace, and the heat released by the hot air furnace is transmitted to the oven, and the oven comprises an upper oven chamber 13 and a lower oven chamber 14, wherein the upper oven chamber comprises a first frame 15 supporting a sieve plate, and the lower oven chamber comprises a second frame 16 supporting the sieve plate and a pushing mechanism for lowering the sieve plate, and the pushing mechanism adopts the pushing mechanism described in a device for drying Chinese medicinal materials and agricultural and sideline products with publication number CN209944903U, which will not be repeated here.

[0035] In this embodiment, a double door 17 is provided on one side of the upper oven chamber, and the double door is used to facilitate the replacement of the sieve plate.

[0036] In this embodiment, a double folding door 18 is provided on one side of the lower oven chamber, and the double folding door is used to facilitate replacement of the sieve tray under various drying modes.

[0037] The second frame of the lower oven chamber described in this embodiment is further provided with a detachable support frame 19. When the one-time loading mode is used, the support frame is placed and the rotating handle 20 of the pushing mechanism is locked.

[0038] In this embodiment, the bottom of the oven is provided with a plurality of sieve tray outlets 21 corresponding to the lower oven sieve tray, and a residue cleaning port 22, and the top of the oven is provided with a moisture removal port 23.

[0039] The working principle of this utility model:

[0040] When in use, select the drying mode according to the characteristics of the product to be dried, and place the product to be dried on the sieve plate of the upper oven chamber in the fixed mode or the sieve plate of the lower oven chamber in the circulation mode;

[0041] Turn on the hot air furnace to dry the products in the tray. The hot air furnace selects the fuel inlet and replaces the corresponding furnace bridge according to the fuel;

[0042] When the drying is completed, turn off the hot air furnace, turn the handle to make the sieve plate fall down and drop into the discharge port;

[0043] Pull out the sieve plate to complete the product drying.

[0044] The utility model discloses a novel device with simple structure and convenient operation, and can effectively meet the selection requirements of drying modes for different products, and can make full use of the space in the drying box body, thereby improving the drying efficiency and applicability.

[0045] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A furnace structure, characterized in that: It comprises a cylindrical structure made of refractory bricks, wherein a convex edge is arranged on the inner side of the bottom of the cylindrical structure, a coal-burning furnace bridge or a replaceable furnace bridge ring frame is arranged on the convex edge, and a biomass particle furnace bridge is arranged on the replaceable furnace bridge ring frame.

2. The furnace structure according to claim 1, characterized in that: The biomass particle furnace bridge is a cone that is larger at the top and smaller at the bottom. The upper end of the cone has an extension, and the lower end of the cone is provided with a switchable bottom plate.

3. The furnace structure according to claim 2, characterized in that: The coal-burning furnace bridge is provided with a plurality of straight-line holes.

4. The furnace structure according to claim 3, characterized in that: A plurality of circular holes are arranged on the cone.

5. A hot blast stove, comprising the furnace structure, the fuel inlet and the heat exchange assembly as claimed in claim 4, characterized in that: The fuel inlet is a coal feed inlet and a biomass fuel feed inlet which are arranged on one side of the furnace body from top to bottom. The biomass fuel feed inlet is provided with a biomass fuel feeding mechanism. The biomass fuel feeding mechanism includes a hopper, a screw feeding rod and a feeding pipe. The hopper is arranged at the entrance of the screw feeding rod. The screw feeder outlet position is arranged at one end of the feeding pipe, and the other end is opened toward the biomass particle furnace bridge. The heat exchange component includes a hot air outlet, and the hot air outlet is arranged on the other side of the lower part of the furnace body.

6. A drying device, comprising the hot air stove and oven as claimed in claim 5, characterized in that: The oven is arranged on one side of the hot air outlet of the hot air stove and is connected to the hot air stove. The heat released by the hot air stove is transmitted to the oven. The oven includes an upper oven chamber and a lower oven chamber. The upper oven chamber includes a first frame supporting the sieve plate, and the lower oven chamber includes a second frame supporting the sieve plate and a pushing mechanism for lowering the sieve plate.

7. The drying device according to claim 6, characterized in that: A double door is arranged on one side of the upper oven chamber, and the double door is used to facilitate the replacement of the sieve plate.

8. The drying device according to claim 7, characterized in that: A double folding door is arranged on one side of the lower oven chamber, and the double folding door is used to facilitate replacement of the sieve tray under various drying modes.

9. The drying device according to claim 8, characterized in that: A detachable support frame is also arranged on the second frame of the lower oven chamber.

10. The drying device according to claim 6, characterized in that: The bottom of the oven is provided with a plurality of rows of sieve tray outlets corresponding to the lower oven sieve tray and a medicine residue cleaning port, and the top of the oven is provided with a moisture discharge port.

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