A biomass pellet cooling device

Abstract

The present invention relates to the field of biomass pellet processing technology, and in particular to a biomass pellet cooling device, comprising a cabinet, a hollow rod located in the cabinet, and a cold air chamber located outside the cabinet, wherein the hollow rod is arranged vertically, and the two ends penetrate the upper and lower sides of the cabinet, the upper side of the cabinet is provided with a feed port, the lower side is provided with a discharge port, and a storage box is provided below the discharge port; a spiral feed plate is arranged in the cabinet, the middle of the spiral feed plate surrounds the hollow rod, and the outer side is attached to the inner wall of the cabinet; an air outlet is arranged on the hollow rod, and the hollow rod is connected to an exhaust fan; an air inlet is arranged in the cold air chamber that penetrates the outer wall of the cabinet, and the cold air chamber is connected to the air conditioner. The biomass pellets rotate and fall on the spiral feed plate, so that the material falling distance is increased, and the cold air is blown into the space between the spiral feed plates through the air inlet through the cold air chamber, so as to cool down the biomass pellets thereon, and the hot air is brought into the hollow rod through the air outlet and extracted by the exhaust fan, thereby improving the cooling time and cooling effect of the biomass pellets.

Description

Technical Field

[0001] The invention relates to the technical field of biomass particle processing, and in particular to a biomass particle cooling device. Background Art

[0002] Biomass pellets are pelletized products obtained by cold compacting the crushed biomass raw materials at room temperature using a pellet machine. They are low-carbon and environmentally friendly fuels used in boilers. Biomass includes agricultural waste (such as straw, rice husks, etc.), forestry waste (such as sawdust, wood blocks, bark, etc.) and other biomass resources. The diameter of biomass pellets is generally 6-10 mm, and the length is 4-5 times its diameter.

[0003] After the pelletizing process is completed by the pellet machine, a biomass pellet cooling device is required to cool the pellets before they are transported or stored. In the prior art, the processed biomass pellets are generally cooled by piling them in a cooling box and dissipating the heat through a ventilator or a hair dryer. However, a large number of biomass pellets are crowded together, and the heat dissipation effect is not ideal. Spreading the biomass pellets to dissipate heat will occupy a large area.

[0004] Chinese invention patent CN117968295A discloses a biomass particle cooling device, which is configured by setting the cooling cylinder to a structure of a conical cylinder, a first annular cylinder and a second annular cylinder, and arranging a first mesh plate, a second mesh plate and a third mesh plate in the conical cylinder, and arranging an air blowing nozzle on the outer wall of the conical cylinder. After the biomass particles enter the conical cylinder from the feed port, they are rapidly air-cooled, and then enter the first annular cylinder and the second annular cylinder for indirect water cooling to reduce the waste heat. Through a hierarchical step-by-step cooling method, the biomass particles achieve a better cooling effect and uniformity. The biomass particles are dispersed and dropped by the first mesh plate, the second mesh plate and the third mesh plate, and the air blowing nozzle blows cold air to dissipate heat and cool during the falling process. However, the biomass particles fall at a fast speed, resulting in a short cooling time and poor cooling effect. In addition, the biomass particles are easily accumulated on the mesh plate, which is not easy to dissipate heat and cool. Chinese invention patent CN220892698U discloses a cooling device for biomass pellet processing, which starts a cooling fan and transmits cold air to the air cooling component through a first connecting pipe. The air cooling component blows cold air into the biomass pellets inside the storage box, thereby improving the cooling effect of the biomass pellets inside the storage box and reducing the cooling time. However, the biomass pellets piled inside the storage box increase the difficulty of cooling, and the hot air is difficult to discharge, resulting in poor heat dissipation effect. Summary of the invention

[0005] The present invention is to overcome the shortcomings of the above-mentioned prior art and provide a biomass pellet cooling device. The present invention increases the material falling distance by rotating the biomass pellets on the spiral feeding plate, blows cold air through the air inlet into the spiral feeding plate through the cold air chamber to cool the biomass pellets thereon, and brings the hot air into the hollow rod through the air outlet and is extracted by the exhaust fan, thereby achieving the effect of increasing the cooling time and temperature reduction of the biomass pellets.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a biomass particle cooling device, comprising a cabinet, a hollow rod located in the cabinet and a cold air chamber located outside the cabinet, the hollow rod is vertically arranged, and both ends are fixed on the upper and lower sides of the cabinet, the upper side of the cabinet is provided with a feed port, the lower side is provided with a discharge port, and a storage box is provided below the discharge port; a spiral feed plate is provided in the cabinet, the middle of the spiral feed plate surrounds the hollow rod, and the outer side is attached to the inner wall of the cabinet; an air outlet is provided on the hollow rod, one end of the hollow rod is closed, and the other end is connected to an exhaust fan; the cold air chamber is provided with an air inlet that penetrates the outer wall of the cabinet, and the cold air chamber is connected to the air conditioner through a cold air pipe.

[0007] Preferably, the air inlets and air outlets are arranged alternately.

[0008] Preferably, an anti-blocking adjustment mechanism is also provided in the cabinet between the spiral blanking plates, and the anti-blocking adjustment mechanism includes a toggle rod, a rotating shaft and a driver; the rotating shaft is located in the hollow rod and is coaxially arranged with the hollow rod, and the driver drives the rotating shaft to perform reciprocating rotational motion; an adjustment port is provided on the side wall of the hollow rod, and a rotating pin is provided at the adjustment port, a circular plate is provided at one end of the toggle rod, and the other end passes through the adjustment port and is located between the spiral blanking plates; the center of the circular plate is rotatably connected to the rotating pin; the circular plate is connected to the rotating shaft through a connecting structure.

[0009] Preferably, a material shifting fork is provided on the portion of the shifting rod outside the adjusting port.

[0010] Preferably, the adjustment port is arranged at an inclination, and the inclination direction is the same as the rotation direction of the spiral blanking plate, and the circular plate and the rotating pin are correspondingly arranged at the adjustment port.

[0011] Preferably, the connecting structure includes a ring, a sleeve rod is slidably provided on the ring, sliding sleeves are provided at both ends of the sleeve rod, a sliding rod is slidably provided on the sliding sleeve, and the sliding rod is connected to the rotating shaft; a rotating block is provided on the ring, and the rotating block is connected to the circular plate through a connecting ear plate, and a bearing is provided at the rotating connection of the connecting ear plate.

[0012] Preferably, a vibrator is provided on the cabinet, and the position of the vibrator corresponds to the position of the spiral blanking plate.

[0013] Preferably, baffle plates are provided at the upper and lower ends of the spiral blanking plate respectively.

[0014] Preferably, a blocking cover is provided on the air outlet and the air inlet, and the blocking cover includes a plurality of blocking bars, one end of the plurality of blocking bars is connected to the edge of the air outlet and the air inlet, and the other end of the plurality of blocking bars is connected and fixed together along the center line of the air outlet and the air inlet.

[0015] Preferably, the storage box includes a plurality of annular grooves arranged outward from the center and a feed cover plate located above the annular grooves, and the feed cover plate is connected to the discharge port through an interface; the annular grooves are provided with material blocking convex rings at the upper ends of both sides, and the plurality of annular grooves are fixedly connected by connecting ribs.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] (1) The biomass pellets are poured into the upper end of the spiral feeding plate inside through the feed port on the cabinet. The biomass pellets rotate and fall on the spiral feeding plate, which increases the falling distance of the material. The cold air is blown into the space between the spiral feeding plates through the air inlet through the cold air chamber to cool the biomass pellets thereon, and the hot air is brought into the hollow rod through the air outlet and extracted by the exhaust fan, thereby increasing the cooling time and cooling effect of the biomass pellets. In addition, the biomass pellets are scattered on the spiral feeding plate and are not easy to accumulate, which further improves the heat dissipation and cooling effect.

[0018] (2) The staggered arrangement of the air inlet and the air outlet improves the diffusion effect of the cold air from the air inlet through the spiral feeding plates to the air outlet, increases the diffusion range, and further improves the cooling time and temperature reduction effect.

[0019] (3) The driver drives the rotating shaft to make reciprocating rotational motion, driving the circular plate to rotate left and right, and swinging the toggle rod, so that the toggle fork on the toggle rod evacuates the biomass pellets on the spiral unloading plate, thereby enhancing the heat dissipation effect of the biomass pellets, increasing the contact area between the cold air and the biomass pellets, and improving the cooling effect of the biomass pellets.

[0020] (4) The adjusting port, the circular plate and the rotating pin are tilted, and the tilting direction is the same as the rotation direction of the spiral feeding plate, so that when the toggle rod swings along the tilting direction of the spiral feeding plate, the toggle fork can better evacuate the biomass particles on the spiral feeding plate.

[0021] (5) When the shaft rotates a certain angle, the slide rod rotates accordingly, driving the sleeve rod to swing through the sleeve. At the same time, the ring on the sleeve rod moves synchronously, and the ring is connected to the circular plate through the rotating block and the connecting ear plate. Under the restriction of the circular plate, the sleeve moves in a circular motion around it, so that the ring slides on the sleeve rod and pulls the sleeve to slide on the slide rod, realizing the transmission of force from the shaft to the circular plate.

[0022] (6) A vibrator is provided on the cabinet to shake off the biomass particles accumulated on the edge of the spiral unloading plate, thereby improving the application effect.

[0023] (7) Baffle plates are provided at the upper and lower ends of the spiral feeding plate, so that when the biomass particles are fed onto and discharged from the spiral feeding plate, the baffle plates block the materials to prevent them from spilling.

[0024] (8) Three blocking bars are arranged to form a tripod to ensure the air volume at the air outlet and the air inlet. The gap between the blocking bars is smaller than the size of the air outlet and the air inlet. The biomass particles have a certain length and diameter and are not easily stuck in the gap between the blocking bars. At the same time, it also avoids the biomass particles from being blocked at the air outlet and the air inlet.

[0025] (9) Heat dissipation The cooled biomass particles fall into the annular groove of the storage box to prevent the biomass particles from accumulating in the storage box, improve the heat dissipation effect, and dissipate the residual heat. The annular groove can be set into a screen shape to facilitate heat dissipation to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a front cross-sectional schematic diagram of the present invention;

[0027] Figure 2 It is a schematic diagram of the internal section of the cabinet;

[0028] Figure 3 It is a top view of the cabinet;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the anti-blocking adjustment mechanism and the hollow rod;

[0030] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0031] Figure 6 is a sectional stereoscopic schematic diagram of a hollow rod at a connection structure;

[0032] Figure 7 for Figure 6 Schematic diagram of the connecting structure;

[0033] Figure 8 It is a three-dimensional cross-sectional view of the storage box.

[0034] Description of reference numerals:

[0035] 1-cabinet, 11-feeding port, 12-discharging port, 13-spiral unloading plate, 14-vibrator, 15-blocking plate;

[0036] 2-hollow rod, 21-air outlet, 22-exhaust fan, 23-adjustment port;

[0037] 3- cooling air chamber, 31- air inlet, 32- cooling air pipe;

[0038] 4-anti-blocking adjustment mechanism, 41-sliding rod, 42-circular plate, 43-rotating pin, 44-rotating shaft, 45-driver, 46-material shifting fork;

[0039] 5-connecting structure, 51-ring, 52-rod, 53-sliding sleeve, 54-sliding rod, 55-bearing, 56-rotating block, 57-connecting ear plate;

[0040] 6-blocking cover, 61-blocking strip;

[0041] 7- material storage box, 71- annular groove, 72- material blocking convex ring, 73- material feeding cover plate, 74- connecting rib. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0043] Example

[0044] The following is combined with Figure 1-Figure 8 The present invention is further described as follows: a biomass particle cooling device, such as Figure 1 and Figure 2 As shown, it includes a cabinet 1, a hollow rod 2 located inside the cabinet 1 and a cold air chamber 3 located outside the cabinet 1, the hollow rod 2 is vertically arranged, and both ends are fixed on the upper and lower sides of the cabinet 1, a feed port 11 is provided on the upper side of the cabinet 1, a discharge port 12 is provided on the lower side, and a storage box 7 is provided below the discharge port 12; a spiral feed plate 13 is provided inside the cabinet 1, the middle of the spiral feed plate 13 surrounds the hollow rod 2, and the outer side is attached to the inner wall of the cabinet 1; an air outlet 21 is provided on the hollow rod 2, one end of the hollow rod 2 is closed, and the other end is connected to the exhaust fan 22; the cold air chamber 3 is provided with an air inlet 31 that penetrates the outer wall of the cabinet 1, and the cold air chamber 3 is connected to the air conditioner through a cold air pipe 32.

[0045] The biomass pellets are poured into the upper end of the spiral feed plate 13 inside through the feed port 11 on the cabinet 1, and the biomass pellets rotate and fall on the spiral feed plate 13, so that the falling distance of the material is increased, and the cold air is blown into the spiral feed plates 13 through the air inlet 31 through the cold air chamber 3 to cool the biomass pellets thereon, and the hot air is brought into the hollow rod 2 through the air outlet 21 and extracted by the exhaust fan 22, thereby increasing the cooling time and cooling effect of the biomass pellets, and the biomass pellets are scattered on the spiral feed plate 13 and are not easy to accumulate, further improving the heat dissipation and cooling effects.

[0046] The air inlet 31 and the air outlet 21 are staggered, which improves the diffusion effect of the cold air from the air inlet 31 through the spiral blanking plate 13 and then to the air outlet 21, increases the diffusion range, and further improves the cooling effect.

[0047] like Figure 2 , Figure 4-Figure 6 As shown, an anti-blocking adjustment mechanism 4 is also provided between the spiral blanking plates 13 in the cabinet 1, and the anti-blocking adjustment mechanism 4 includes a toggle rod 41, a rotating shaft 44 and a driver 45; the rotating shaft 44 is located in the hollow rod 2 and is coaxially arranged with the hollow rod 2, and the driver 45 drives the rotating shaft 44 to perform reciprocating rotation; an adjustment port 23 is provided on the side wall of the hollow rod 2, and a rotating pin 43 is provided at the adjustment port 23, a circular plate 42 is provided at one end of the toggle rod 41, and the other end passes through the adjustment port 23 and is located between the spiral blanking plates 13; the center of the circular plate 42 is rotatably connected to the rotating pin 43; the circular plate 42 is connected to the rotating shaft 44 through a connecting structure 5. A material shifting fork 46 is provided at the part of the toggle rod 41 outside the adjustment port 23.

[0048] The driver 45 drives the rotating shaft 44 to perform reciprocating rotational motion, driving the circular plate 42 to rotate left and right, and swinging the toggle rod 41, so that the material fork 46 on the toggle rod 41 evacuates the biomass pellets on the spiral unloading plate 13, thereby enhancing the heat dissipation effect of the biomass pellets, increasing the contact area between the cold air and the biomass pellets, and improving the cooling effect of the biomass pellets.

[0049] like Figure 4 and Figure 5 As shown, the adjustment port 23 is tilted, and the tilting direction is the same as the rotation direction of the spiral feed plate 13. The circular plate 42 and the rotating pin 43 are correspondingly arranged at the adjustment port 23; so that when the shifting rod 41 swings along the tilting direction of the spiral feed plate 13, the shifting fork 46 can better evacuate the biomass particles on the spiral feed plate 13.

[0050] like Figure 6 and Figure 7 As shown, the connecting structure 5 includes a collar 51, on which a sleeve rod 52 is slidably provided, sleeves 53 are provided at both ends of the sleeve rod 52, on which a slide rod 54 is slidably provided, and the slide rod 54 is connected to the rotating shaft 44; a rotating block 56 is provided on the collar 51, and the rotating block 56 is connected to the circular plate 42 through a connecting ear plate 57, and a bearing 55 is provided at the rotating connection of the connecting ear plate 57.

[0051] When the rotating shaft 44 rotates a certain angle, the sliding rod 54 rotates accordingly, and drives the sleeve 52 to swing through the sliding sleeve 53. At the same time, the collar 51 on the sleeve 52 moves synchronously, and the collar 51 is connected to the circular plate 42 through the rotating block 56 and the connecting ear plate 57. Under the restriction of the circular plate 42, the collar 51 moves in a circular motion around it, so that the collar 51 slides on the sleeve 52 and pulls the sliding sleeve 53 to slide on the sliding rod 54, thus realizing the transmission of force from the rotating shaft 44 to the circular plate 42. Since the circular plate 42 is inclined and the collar 51 is connected thereto, when it rotates, it is necessary to ensure that the axis of the collar 51 cannot deviate and must coincide with the axis of the sleeve 52, that is, the collar 51 must always be vertically sleeved on the sleeve 52; and the rotating block 56 and the connecting ear plate 57 allow the collar 51 to rotate and move up and down relative to the circular plate 42, thereby ensuring that the collar 51 is always vertical when the circular plate 42 rotates.

[0052] like Figure 1 and Figure 3 As shown, a vibrator 14 is provided on the cabinet 1, and the position of the vibrator 14 corresponds to the position of the spiral unloading plate 13, so as to shake off the biomass particles accumulated on the edge of the spiral unloading plate 13 and improve the application effect.

[0053] like Figure 2 As shown, baffle plates 15 are respectively provided at the upper and lower ends of the spiral feed plate 13 , so that when the biomass particles are fed onto and discharged from the spiral feed plate 13 , the baffle plates 15 block the materials to prevent them from spilling.

[0054] like Figure 4 and Figure 5 As shown, a blocking cover 6 is provided on the air outlet 21 and the air inlet 31, and the blocking cover 6 includes a plurality of blocking strips 61, one end of the plurality of blocking strips 61 is connected to the edge of the air outlet 21 and the air inlet 31, and the other end of the plurality of blocking strips 61 is connected and fixed together along the center line of the air outlet 21 and the air inlet 31.

[0055] Three blocking bars 61 are arranged to form a tripod form to ensure the air volume of the air outlet 21 and the air inlet 31. The gap size between the blocking bars 61 is smaller than the size of the air outlet 21 and the air inlet 31. The biomass particles have a certain length and diameter (the diameter is generally 6-10 mm, and the length is 4-5 times its diameter), and are not easily stuck in the gap size between the blocking bars 61. At the same time, it also avoids the biomass particles from being blocked on the air outlet 21 and the air inlet 31.

[0056] like Figure 8 As shown, the storage box 7 includes a plurality of annular grooves 71 arranged outward from the center and a feed cover plate 73 located above the annular grooves 71, and the feed cover plate 73 is connected to the discharge port 12 through an interface; the annular grooves 71 are provided with material blocking convex rings 72 at the upper ends of both sides, and the plurality of annular grooves 71 are fixedly connected by connecting ribs 74.

[0057] The biomass particles after heat dissipation and cooling fall into the annular groove 71 of the storage box 7, avoiding the accumulation of biomass particles in the storage box 7, improving the heat dissipation effect, and dissipating the residual heat. The annular groove 71 can be set to a screen shape to facilitate heat dissipation to the outside.

[0058] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the purpose of describing the present invention rather than requiring the present invention to be constructed or operated in a specific position, and therefore should not be construed as limiting the present invention. The terms "connected" and "connected" in the present invention should be understood in a broad sense, for example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A biomass particle cooling device, characterized in that: It comprises a cabinet (1), a hollow rod (2) located inside the cabinet (1), and a cold air chamber (3) located outside the cabinet (1), wherein the hollow rod (2) is arranged vertically, and its two ends are fixed to the upper and lower sides of the cabinet (1), the cabinet (1) is provided with a feed inlet (11) on the upper side, and a discharge outlet (12) on the lower side, and a storage box (7) is provided below the discharge outlet (12); A spiral blanking plate (13) is provided in the cabinet (1), wherein the middle of the spiral blanking plate (13) surrounds the hollow rod (2) and the outer side is attached to the inner wall of the cabinet (1); The hollow rod (2) is provided with an air outlet (21); one end of the hollow rod (2) is closed, and the other end is connected to the exhaust fan (22); the cold air chamber (3) is provided with an air inlet (31) penetrating the outer wall of the cabinet (1); the cold air chamber (3) is connected to the air conditioner via a cold air pipe (32); An anti-blocking adjustment mechanism (4) is also provided between the spiral blanking plates (13) in the cabinet (1), and the anti-blocking adjustment mechanism (4) comprises a toggle rod (41), a rotating shaft (44) and a driver (45); the rotating shaft (44) is located in the hollow rod (2) and is coaxially arranged with the hollow rod (2), and the driver (45) drives the rotating shaft (44) to perform reciprocating rotational motion; an adjustment opening (23) is provided on the side wall of the hollow rod (2), and a rotating pin (43) is provided at the adjustment opening (23); a circular plate (42) is provided at one end of the toggle rod (41), and the other end passes through the adjustment opening (23) and is located between the spiral blanking plates (13); the center of the circular plate (42) is rotatably connected to the rotating pin (43); the circular plate (42) is connected to the rotating shaft (44) via a connecting structure (5); The regulating opening (23) is arranged at an angle, and the inclination direction is the same as the rotation direction of the spiral blanking plate (13), and the circular plate (42) and the rotating pin (43) are arranged at the regulating opening (23) correspondingly; The connection structure (5) comprises a sleeve ring (51), a sleeve rod (52) is slidably provided on the sleeve ring (51), sliding sleeves (53) are provided at both ends of the sleeve rod (52), a sliding rod (54) is slidably provided on the sliding sleeve (53), and the sliding rod (54) is connected to the rotating shaft (44); a rotating block (56) is provided on the sleeve ring (51), and the rotating block (56) is connected to the circular plate (42) via a connecting ear plate (57), and a bearing (55) is provided at the rotating connection of the connecting ear plate (57).

2. A biomass particle cooling device according to claim 1, characterized in that: The air inlets (31) and the air outlets (21) are arranged alternately.

3. The biomass particle cooling device according to claim 1, characterized in that: The portion of the shifting rod (41) outside the adjustment opening (23) is provided with a shifting fork (46).

4. The biomass particle cooling device according to claim 1, characterized in that: The cabinet (1) is provided with a vibrator (14), and the position of the vibrator (14) corresponds to the position of the spiral blanking plate (13).

5. The biomass particle cooling device according to claim 1, characterized in that: The upper and lower ends of the spiral feed plate (13) are respectively provided with material blocking plates (15).

6. The biomass particle cooling device according to claim 1, characterized in that: The air outlet (21) and the air inlet (31) are both provided with a blocking cover (6), the blocking cover (6) comprising a plurality of blocking strips (61), one end of the plurality of blocking strips (61) being connected to the edge of the air outlet (21) and the air inlet (31), and the other end of the plurality of blocking strips (61) being connected and fixed together along the center line of the air outlet (21) and the air inlet (31).

7. The biomass particle cooling device according to claim 1, characterized in that: The material storage box (7) comprises a plurality of annular grooves (71) arranged outwardly from the center and a feed cover plate (73) located above the annular grooves (71), wherein the feed cover plate (73) is connected to the discharge port (12) via an interface; the annular grooves (71) are provided with material blocking convex rings (72) at the upper ends of both sides, and the plurality of annular grooves (71) are fixedly connected via connecting ribs (74).

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