Biomass straw particle forming and cooling device

Abstract

The utility model discloses a biomass straw particle forming and cooling device which comprises a cooling box, the upper end of the cooling box is communicated with a feeding hopper, a discharging speed adjusting assembly is arranged at an outlet in the bottom of the feeding hopper, and the bottom of the side face of the cooling box is connected with a cold air conveying pipeline. A plurality of vertically arranged material slow-descending funnels are fixedly arranged in the cooling box, a plurality of uniformly distributed air holes are formed in the material slow-descending funnels, conical slow-descending hoppers are fixedly arranged on the inner wall of the cooling box and located above the material slow-descending funnels, and channels for materials to fall down are formed between the peripheries of the bottom edges of the conical slow-descending hoppers and the inner wall of the cooling box; according to the utility model, the traditional stirring mode is abandoned, and the design of combining the conical slow hopper and the material slow descending hopper is utilized, so that biomass particles slowly slide down in the cooling box and are reversely cooled by cold air, the crushing of particles which are not completely formed due to stirring is avoided, and the generation of waste products is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of biomass pellet cooling device, specifically point to a kind of biomass straw pellet forming cooling device. BACKGROUND

[0002] Biomass pellet is with crop straw, forestry waste and other biomass resources as raw material, by compression forming process into solid fuel. In the production process of biomass straw pellet, the cooling link after forming is essential. This is because the temperature of just-formed biomass pellet is relatively high, if not cooled in time, not only the hardness, density and other physical properties of pellet will be affected, but also subsequent packaging, storage link may have problems, such as spontaneous combustion due to residual heat accumulation, so efficient cooling step is of great significance to guarantee the quality of biomass pellet.

[0003] Traditional biomass pellet cooling equipment, in order to achieve the effect of uniform cooling, often equipped with stirring equipment, by continuously turning the pellet, so that each part can fully contact the cooling medium. However, this way has significant drawbacks. On the one hand, the external force exerted by stirring action is easy to cause part of the biomass pellet which is still in the state of not completely formed to be broken, thereby generating a certain proportion of waste, which unnecessarily increases the production cost; on the other hand, after cooling, in order to obtain qualified products, it is necessary to additionally add a screening process to specially screen out the broken residue, which undoubtedly consumes more manpower, material resources and time cost, reduces the overall production efficiency. UTILITY MODEL CONTENT

[0004] (I) Technical problem

[0005] The utility model provides a kind of biomass straw pellet forming cooling device, solves the problem that unformed pellet is broken by stirring and subsequent residue needs to be screened in traditional cooling equipment.

[0006] (II) Technical content

[0007] To solve the above technical problems, the technical scheme of the utility model is as follows: a kind of biomass straw pellet forming cooling device, including cooling box, the upper end of cooling box is connected with inlet hopper, and the bottom outlet of inlet hopper is provided with discharging speed adjusting assembly, the bottom of the side of cooling box is connected with cold air conveying pipeline, and the inside of cooling box is fixed with multiple vertical material slow-release hoppers, the material slow-release hoppers are all provided with a plurality of evenly distributed air holes, the inner wall of cooling box and above each material slow-release hopper are all fixed with conical material buffer hopper, the bottom of conical material buffer hopper is provided with channel for material falling between the bottom of conical material buffer hopper and the inner wall of cooling box, and the bottom outlet of the bottommost material slow-release hopper extends to the discharge port below cooling box.

[0008] Further, the blanking speed adjusting assembly comprises a shell communicated with the feeding hopper and the cooling box, a rotating shaft is arranged in the shell, a plurality of material blocking plates are fixed on the rotating shaft, and a motor for driving the rotating shaft to rotate is fixed on the outer side of the shell.

[0009] Further, the cooling box is provided with an exhaust port at the upper end.

[0010] Further, the cooling box is provided with an exhaust port at the upper end.

[0011] Further, the cooling box is provided with an exhaust port at the upper end.

[0012] Further, the cooling box is provided with an exhaust port at the upper end.

[0013] Further, the cooling box is provided with an exhaust port at the upper end.

[0014] (Three) technical effects

[0015] Compared with the prior art, the utility model has the advantages of:

[0016] 1. Discard the traditional stirring mode, utilize the design that the conical slow-feeding hopper and the material slow-descending funnel are combined, make the biomass granule slowly slide in the cooling box, the cold air is cooled in reverse, avoid the broken granule that does not completely form because of stirring, effectively reduce the waste product generation, through the setting of the material slow-descending funnel and the conical slow-feeding hopper, make the biomass granule slow descend in the cooling box layer by layer, and the cold air uniformly passes through each layer of material from bottom to top, guarantee that each part of the granule can be fully and uniformly cooled.

[0017] 2. The air hole on the conical slow-feeding hopper and the material slow-descending funnel can filter the granule in the cooling process, separate the broken slag, reduce the subsequent screening process, shorten the production cycle, and improve the overall production efficiency. DETAILED DESCRIPTION

[0018] Figure 1 It is a three-dimensional structure schematic of a biomass straw granule forming and cooling device Figure One .

[0019] Figure 2 It is a three-dimensional structure schematic of a biomass straw granule forming and cooling device Figure Two .

[0020] Figure 3 It is a front view structural schematic of a biomass straw granule forming and cooling device.

[0021] Figure 4 It is a sectional structure schematic of a biomass straw granule forming and cooling device.

[0022] As shown in the figure: 1, circulating water tank; 2, water curtain wallboard; 3, water seal plate; 4, circulating water pump; 5, drain pipe; 6, circulating pipe; 7, water replenishment pipe; 8, turbidimeter; 9, electromagnetic valve one; 10, electromagnetic valve two; 11, electromagnetic valve three; 12, PLC controller; 13, water replenishment pipe two; 14, electromagnetic valve four. DETAILED DESCRIPTION

[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer", "center" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation structure and operation, and therefore cannot be understood as limiting the present application.

[0024] In the description of the present application, it should be understood that the terms "provided with", "mounted", "connected", "connected" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] The present application will be further described in detail below with reference to the drawings.

[0026] In combination with the drawings Figure 1 to the drawings Figure 4 A biomass straw pellet forming and cooling device, comprising a cooling box 1, a feeding hopper 2 is communicated at the upper end of the cooling box 1, a discharging speed adjusting assembly 3 is arranged at the bottom outlet of the feeding hopper 2, a cold air conveying pipeline 4 is connected at the bottom of the side of the cooling box 1, a plurality of vertically arranged material slow descending funnels 5 are fixedly arranged in the cooling box 1, a plurality of uniformly distributed air permeable holes 6 are arranged on each material slow descending funnel 5, a conical material slow descending funnel 7 is fixedly arranged on the inner wall of the cooling box 1 and above each material slow descending funnel 5, a channel 8 for material falling is arranged between the bottom edge of the conical material slow descending funnel 7 and the inner wall of the cooling box 1, a plurality of uniformly distributed air permeable holes 16 are arranged on the conical material slow descending funnel 7, the diameters of the air permeable holes 6 and the air permeable holes 16 are smaller than the minimum diameter of the biomass pellets, and the bottom outlet of the bottommost material slow descending funnel 5 extends to the discharge port 9 below the cooling box 1.

[0027] As a preferred technical scheme in the embodiment, the discharging speed adjusting assembly 3 comprises a shell 10 connected with the feeding hopper 2 and the cooling box 1, the shell 10 is internally provided with a rotating shaft 11, a plurality of baffle plates 12 are fixedly arranged on the rotating shaft 11, and a motor 13 for driving the rotating shaft 11 to rotate is fixedly arranged on the outer side of the shell 10.

[0028] As a preferred technical scheme in the embodiment, the cooling box 1 is provided with an exhaust port 14 at the upper end, the cold air conveying pipeline 4 is connected with external air supply equipment, and the cooling box 1 is provided with a waste residue cleaning window 15 at the bottom of the side face.

[0029] The working principle of the biomass straw pellet forming and cooling device is as follows: the device controls the speed of biomass pellets entering the cooling box 1 from the feeding hopper 2 by the discharging speed adjusting assembly 3, so as to ensure that the material stably enters the cooling link. The external cold air is introduced into the bottom of the cooling box 1 through the cold air conveying pipeline 4, and the cold air flows upwards. The material is guided to slowly slide from the top to the bottom of the cooling box 1 under the guidance of the plurality of vertically arranged material slow descending funnels 5 and the conical material slow funnels 7, and fully contacts with the rising cold air in the sliding process, so as to realize cooling. Meanwhile, the air holes on the material slow descending funnel 5 and the air holes on the conical material slow funnel 7 can screen the pellets, and separate out the broken residues.

[0030] The cooling working process of the biomass straw pellet forming and cooling device is as follows:

[0031] Step one: the biomass pellets enter the discharging speed adjusting assembly 3 through the feeding hopper 2. The motor 13 of the discharging speed adjusting assembly 3 drives the rotating shaft 11 to rotate, the rotating shaft 11 drives the baffle plates 12 to rotate, so as to control the speed of the biomass pellets entering the cooling box 1 from the feeding hopper 2, and prevent the material from being accumulated or entering the cooling box 1 too fast.

[0032] Step two: the biomass pellets regulated by the discharging speed adjusting assembly 3 fall into the cooling box 1, and first fall on the uppermost conical material slow funnel 7. Since the channel 8 for the material falling is arranged between the bottom edge of the conical material slow funnel 7 and the inner wall of the cooling box 1, the pellets slowly fall along the inclined surface of the conical material slow funnel 7, and finally fall from the channel 8 to the material slow descending funnel 5 below. In this process, the cold air entering from the cold air conveying pipeline 4 starts to exchange heat with the pellets, and the air holes two 16 on the conical material slow funnel 7 preliminarily screen the pellets, and the broken residues fall to the lower side through the air holes two 16.

[0033] Step three: the material slow descending funnel 5 is provided with a plurality of evenly distributed air holes 6, after the particles fall on the material slow descending funnel 5, since the diameter of the air holes 6 is smaller than the minimum diameter of the biomass particles, the particles continue to slowly slide from the edge of the material slow descending funnel 5 to the center lowest place, and then fall to the next layer of the conical slow feeding hopper 7. In this way, the particles slowly descend layer by layer between the material slow descending funnels 5 and the conical slow feeding hoppers 7, and continuously exchange heat with the cold air flowing from bottom to top. The cold air absorbs the heat of the particles during the rising process, so that the temperature of the particles gradually decreases, and the particles are fully cooled.

[0034] Step four: the biomass particles cooled after passing through the multiple layers of slow descending are discharged from the bottom outlet of the material slow descending funnel 5 located at the bottom to the discharge port 9 below the cooling box 1, and become the cooled finished product. During the whole cooling process, the separated slag through the air holes 6 and the air holes two 16 can be regularly cleaned through the slag cleaning window 15 at the bottom of the side of the cooling box 1, so as to ensure the cleanliness of the inside of the equipment and maintain the normal operation of the equipment.

[0035] The above describes the utility model and its implementation mode, which is not limited, and the drawings shown are only one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, without creative design, similar structure modes and embodiments to the technical scheme should belong to the protection scope of the utility model.

Claims

1. A biomass straw granule forming and cooling device, comprising a cooling box (1), a feeding hopper (2) is arranged at the upper end of the cooling box (1) in communication, a discharging speed adjusting assembly (3) is arranged at the bottom outlet of the feeding hopper (2), a cold air conveying pipeline (4) is connected at the bottom of the side of the cooling box (1), characterized in that: a plurality of vertically arranged material slow-release hoppers (5) are fixedly arranged inside the cooling box (1), a plurality of evenly distributed air vents (6) are arranged on each material slow-release hopper (5), a conical material slow-release hopper (7) is fixedly arranged on the inner wall of the cooling box (1) above each material slow-release hopper (5), a channel (8) for material falling is arranged between the bottom edge of the conical material slow-release hopper (7) and the inner wall of the cooling box (1), and the bottom outlet of the bottommost material slow-release hopper (5) extends to below the cooling box (1) to form a discharge port (9).

2. The biomass straw pellet forming and cooling device according to claim 1, characterized in that: The discharging speed adjusting assembly (3) comprises a shell (10) in communication with the feeding hopper (2) and the cooling box (1), a rotating shaft (11) is rotatably arranged in the shell (10), a plurality of material blocking plates (12) are fixedly arranged on the rotating shaft (11), and a motor (13) for driving the rotating shaft (11) to rotate is fixedly arranged on the outer side of the shell (10).

3. The biomass straw pellet forming and cooling device according to claim 1, characterized in that: An exhaust port (14) is arranged at the upper end of the cooling box (1).

4. The biomass straw pellet forming and cooling device according to claim 1, characterized in that: The cold air conveying pipeline (4) is connected with external air supply equipment.

5. The biomass straw pellet forming and cooling device according to claim 1, characterized in that: A waste residue cleaning window (15) is arranged at the bottom of the side of the cooling box (1).

6. The biomass straw pellet forming and cooling device according to claim 1, characterized in that: A plurality of evenly distributed air vents (16) are arranged on the conical material slow-release hopper (7).

7. The biomass straw pellet forming and cooling device according to claim 6, characterized in that: The diameters of the air vents (6) and the air vents (16) are smaller than the minimum diameter of the biomass granules.

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