Batch type coffee bean and nut drying equipment

Abstract

Batch type coffee bean and nut drying equipment comprises a drying room, a heat pump heat supply device and an air inlet channel, a first drying screen and a second drying screen are arranged in the drying room and divide the drying room into a heat supply chamber, a first drying chamber and a second drying chamber, the heat pump heat supply device is installed in the heat supply chamber, a discharging opening is formed in the side wall of the first drying chamber, and a discharging opening is formed in the side wall of the second drying chamber. A discharging door is mounted at the discharging opening; a plurality of axial flow fans are installed in the heat supply chamber at intervals, an air inducing opening is formed in the side wall of the heat supply chamber, a part of space is reserved in the upper portion of the first drying chamber to serve as an air inlet cavity, an air inlet is formed in the side wall of the air inlet cavity, and the air inducing opening is communicated with the air inlet through an air inlet channel. Part of hot air in the heat supply chamber is introduced into the air inlet cavity through the air inlet duct, coffee beans or nuts above the second drying chamber are heated, the heating effect on the coffee beans or the nuts above the second drying chamber is guaranteed, and the phenomenon that the coffee beans or the nuts are affected with damp and rotten is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of material drying, in particular to batch drying equipment for coffee beans and nuts. Background Art

[0002] The Chinese patent with the authorization announcement number CN 217483132U discloses a batch coffee bean drying machine, including: a conveyor belt elevator, the conveyor belt elevator is provided with a conveyor belt, the conveyor belt is divided into a feeding end and a feeding end, and the feeding end is arranged below the feeding box; a coffee fruit peeling machine, the coffee fruit peeling machine is provided with a feeding port and a discharging port, the feeding port of the coffee fruit peeling machine is adapted to be arranged below the discharging end of the conveyor belt, and a horizontal coffee bean peeling platform is arranged below the discharging port of the coffee fruit peeling machine; a drying box, the drying box is arranged on the side of the coffee bean peeling platform, the top of the drying box is open, a drying screen is arranged horizontally along the inner wall of the drying box, a discharging door is arranged on the side of the drying box away from the contact with the coffee bean peeling platform, and a hot air source inlet is arranged below the free side of the drying box; a hot air blower, the output end of the hot air blower is connected to the hot air source inlet. The drying screen arranged inside the drying box is divided into a first drying screen and a second drying screen, and the first drying screen is above the second drying screen. The heat pump source heating equipment generates hot air which is blown into the drying box through the hot air blower. The hot air passes through the second drying screen and the coffee beans on the second drying screen and the first drying screen and the coffee beans on the first drying screen in turn, completing the primary drying of the coffee beans on the first drying screen and the secondary drying of the coffee beans on the second drying screen.

[0003] The hot air in the above patent enters the coffee beans on the second drying screen from the second drying screen. Since the gaps between the coffee beans are very small, the wind speed is greatly weakened under the resistance of the coffee beans. When it reaches the first drying screen, the wind speed is already very low, and it is difficult to enter the coffee beans on the first drying screen, resulting in a poor drying effect of the coffee beans on the first drying screen. Moreover, even if some hot air can still enter the coffee beans on the first screen, since this hot air is the tail gas of the coffee beans on the second screen, it will contain a lot of moisture. This humid gas will not only fail to dry the coffee beans, but will cause the coffee beans to rot due to moisture. Utility Model Content

[0004] The utility model provides a batch type coffee bean and nut drying device to solve the shortcomings of the existing batch type coffee bean drying device, such as the resistance of the coffee beans makes it difficult for hot air to be blown into the coffee beans on the first drying screen, resulting in poor drying effect of the coffee beans above the first drying screen.

[0005] The technical solution adopted by the utility model is:

[0006] A batch drying equipment for coffee beans and nuts comprises a drying room and a heat pump heating device, wherein the top surface of the drying room is an open structure, and a first drying screen and a second drying screen are arranged in the drying room from bottom to top, so as to divide the interior of the drying room into a heating chamber, a first drying chamber and a second drying chamber in sequence, and the heat pump heating device is installed in the heating room, a discharge port is provided on the side wall of the first drying chamber, and a discharge door is installed at the discharge port; the equipment also comprises an air inlet duct, a plurality of axial flow fans are installed in the heating room at intervals, at least one air inlet is provided on the side wall of the heating chamber, a partial space is reserved in the upper part of the first drying room as an air inlet chamber, at least one air inlet is provided on the side wall of the air inlet chamber, and the air inlet is communicated with the air inlet through the air inlet duct.

[0007] In a preferred embodiment, a rectangular opening is opened in the lower side wall of the first drying chamber and the upper side wall of the heating chamber, the upper part of the rectangular opening forms the air inlet, the middle part forms the discharge port, and the lower part forms the air ducting port. The discharge port and the air ducting port are separated by a partition, and the top surface of the partition is aligned with the top surface of the first drying screen.

[0008] In a preferred embodiment, the above-mentioned air inlet duct includes an air duct main body and a mounting frame, wherein the mounting frame is fixedly embedded in the edge of the rectangular opening, and the top of the air duct main body is rotatably hinged to the top of the mounting frame, and the two ends of the air duct main body are respectively hinged to the two side edges of the mounting frame through a cylinder; the air duct main body is provided with an air duct inlet and an air duct outlet located on the same side, the air duct inlet is connected to the air duct, and the air duct outlet is connected to the air inlet.

[0009] In a preferred embodiment, a vertical guide groove is respectively provided on both sides of the rectangular opening, and both sides of the discharge door are respectively arranged in the vertical guide groove, and a discharge door lifting drive mechanism is also correspondingly provided on the side wall of the rectangular opening.

[0010] In a preferred embodiment, the above-mentioned discharge door lifting drive mechanism includes a lifting drive motor, a rack and a gear, the rack is vertically fixed on the outer wall of the discharge door, the lifting drive motor is fixedly installed on the side wall of the rectangular opening, and the output end of the lifting drive motor is connected to one of the gears, and the gear is meshingly connected with the rack.

[0011] In a preferred embodiment, a tail gas outlet is further provided on the side wall of the first drying chamber, and the tail gas outlet is connected to the heating chamber through a recovery pipeline.

[0012] In a preferred embodiment, the second drying screen is provided with a discharge opening, and a discharge plate is rotatably connected to the discharge opening.

[0013] From the above description of the structure of the utility model, it can be seen that compared with the prior art, the utility model has the following advantages:

[0014] 1. The drying equipment of this structure has a part of space reserved at the top of the first drying chamber as an air inlet chamber and an air inlet, and an air inlet is provided on the side of the heating chamber. The air inlet is connected to the air inlet through the air inlet duct, so as to introduce part of the hot air in the heating chamber into the air inlet chamber to heat the coffee beans or nuts above the second drying chamber. Since the hot air is directly generated by the heating chamber without moisture, and is not blocked by the coffee beans or nuts when entering the second drying chamber, it can ensure the heating effect of the coffee beans or nuts above the second drying chamber to prevent moisture and rot.

[0015] 2. The drying equipment of this structure has the air inlet, discharge port and air inlet arranged at the upper, middle and lower parts of a rectangular opening and closed by the air inlet duct, which can be flipped upwards to open. This reduces the workload of opening holes and facilitates the maintenance of the air inlet duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the utility model.

[0017] Figure 2 for Figure 1 Cross-sectional view along the AA direction.

[0018] Figure 3 This is a schematic diagram of the air inlet duct being opened.

[0019] Figure 4 This is a schematic diagram of the unloading door open state. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. In order to fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be implemented without these details.

[0021] A batch drying equipment for coffee beans and nuts, referring to Figure 1 and Figure 2 The drying room 1 includes a drying room 1 and a heat pump heating device. The top surface of the drying room 1 is an open structure, and a first drying screen 11 and a second drying screen 12 are arranged from bottom to top in the drying room 1, which divides the interior of the drying room into a heating chamber 10, a first drying chamber 20 and a second drying chamber 30 in sequence.

[0022] Reference Figure 1 and Figure 2The second drying screen has a feeding opening, and a feeding plate 121 is connected to the feeding opening so as to be turned downward. One side of the feeding plate 121 is hinged to the edge of the feeding opening through a pin, and the other side is provided with a lock 122. The lock is locked when the feeding plate 121 is turned in place to close the feeding opening. When feeding is required, the lock 122 is opened, and the feeding plate 121 is turned downward to open the feeding opening.

[0023] Reference Figure 1 and Figure 2 At least one air inlet 100 is provided on the side wall of the heating chamber 10, and an air inlet duct 13 is connected to the air inlet 100. A heat pump heating device (not shown in the figure) and a plurality of axial flow fans 101 are installed in the heating chamber 10. The axial flow fans 101 are arranged at 45 degrees with the vertical plane, so that part of the heat generated by the heat pump heating device passes through the first drying screen 11 from bottom to top into the first drying chamber 20, and the other part enters the air inlet duct 13 from the air inlet.

[0024] Reference Figure 2 and Figure 3 A discharge port 200 is provided on the side wall of the first drying chamber 20, and a discharge door 201 is installed at the discharge port 200. Part of the space at the top of the first drying chamber 20 is reserved as an air inlet chamber 21, and at least one air inlet 210 is provided on the side wall of the air inlet chamber 21. The air inlet 100 and the air inlet 210 are connected through the air inlet duct 13.

[0025] Preferably, refer to Figure 2 and Figure 3 The lower side wall of the first drying chamber 20 and the upper side wall of the heating chamber of the utility model are provided with a rectangular opening, the upper part of the rectangular opening forms the air inlet 210, the middle part forms the discharge port 200, and the lower part forms the air inlet 100. The discharge port 200 and the air inlet 100 are separated by a partition 22, and the top surface of the partition 22 is aligned with the top surface of the first drying screen 11, so as to ensure that the material can be raked out from the discharge port 200 smoothly. A belt conveyor 2 is also provided on the outer side of the upper discharge port, and the material can fall onto the belt conveyor 2 after being raked out from the discharge port 200.

[0026] Reference Figure 2 and Figure 3The air inlet duct 13 comprises a duct body 131 and a mounting frame 132. The mounting frame 132 is fixedly embedded in the edge of the rectangular opening. The top of the duct body 131 is rotatably hinged to the top of the mounting frame 132 through a pin. The two ends of the duct body 131 are respectively hinged to the two sides of the mounting frame 132 through a cylinder 133. The inner side of the duct body 131 is provided with an air duct inlet 1311 and an air duct outlet 1312. The air duct inlet 1311 is connected to the air inlet 100, and the air duct outlet 1312 is connected to the air inlet 210.

[0027] Reference Figure 2 and Figure 3 A vertical guide groove 202 is provided on both sides of the rectangular opening, and both sides of the discharge door 201 are correspondingly arranged in the vertical guide groove 202. A discharge door lifting drive mechanism is also correspondingly provided on the side wall of the rectangular opening. The discharge door lifting drive mechanism includes a lifting drive motor 231, a gear 232 and a rack 233. The rack 233 is vertically fixed on the outer wall of the discharge door 201. The lifting drive motor 231 is fixedly installed on the side wall of the rectangular opening. The output end of the lifting drive motor 231 is connected to one of the gears 232, and the gear 232 is meshed with the rack 233.

[0028] Reference Figure 3 and Figure 4 When the coffee beans or nuts in the first drying chamber are dried, the air inlet duct is opened from bottom to top, so that it rotates around the pin shaft, and the piston rod of the cylinder is stretched to keep the air inlet duct open. Then the lifting drive motor drives the gear to rotate, driving the rack meshing with the gear to move upward. Since the rack is fixed on the side wall of the discharge door, the movement of the rack can drive the discharge door to rise upward, and the coffee beans or nuts can be discharged from the discharge port.

[0029] Reference Figure 2 A tail gas outlet 24 is also provided on the side wall of the first drying chamber 20, and the tail gas outlet 24 is connected to the heating chamber 10 through a recovery pipeline 25 to recover the tail gas with heat generated in the first drying chamber 20 to the heating chamber 10 for reuse, thereby reducing energy consumption.

[0030] The above is only a preferred embodiment of the utility model, and is not intended to limit the implementation scheme of the utility model. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the utility model, such as the arrangement and combination of the dependent claims or the addition or modification of some conventional technical solutions. All equivalent changes and modifications made according to the scope of the patent application of the utility model and the content of the specification shall still fall within the scope covered by the utility model patent.

Claims

1. A batch drying equipment for coffee beans and nuts, comprising a drying room and a heat pump heating device, wherein the top surface of the drying room is an open structure, and a first drying screen and a second drying screen are arranged in the drying room from bottom to top, and the interior of the drying room is sequentially divided into a heating chamber, a first drying chamber and a second drying chamber, and the heat pump heating device is installed in the heating chamber, and a discharge port is provided on the side wall of the first drying chamber, and a discharge door is installed at the discharge port; the characteristics are: It also includes an air inlet duct, wherein a plurality of axial flow fans are installed at intervals in the heating chamber, and at least one air inlet is provided on the side wall of the heating chamber. Part of the space at the top of the first drying chamber is reserved as an air inlet chamber, and at least one air inlet is provided on the side wall of the air inlet chamber. The air inlet is communicated with the air inlet through the air inlet duct.

2. The batch drying equipment for coffee beans and nuts according to claim 1, characterized in that: A rectangular opening is provided on the lower side wall of the first drying chamber and the upper side wall of the heating chamber, the upper part of the rectangular opening forms the air inlet, the middle part forms the discharge port, and the lower part forms the air ducting port. The discharge port and the air ducting port are separated by a partition, and the top surface of the partition is aligned with the top surface of the first drying screen.

3. The batch drying equipment for coffee beans and nuts according to claim 2, characterized in that: The air inlet duct consists of an air duct main body and a mounting frame, wherein the mounting frame is fixedly embedded in the edge of the rectangular opening, the top of the air duct main body is rotatably hinged to the top of the mounting frame, and the two ends of the air duct main body are respectively hinged to the two side edges of the mounting frame through a cylinder; the air duct main body is provided with an air duct inlet and an air duct outlet located on the same side, the air duct inlet is connected to the air duct outlet, and the air duct outlet is connected to the air inlet.

4. The batch drying equipment for coffee beans and nuts according to claim 2, characterized in that: A vertical guide groove is respectively provided on both sides of the rectangular opening, and both sides of the discharge door are correspondingly arranged in the vertical guide grooves. A discharge door lifting drive mechanism is also correspondingly provided on the side wall of the rectangular opening.

5. The batch drying equipment for coffee beans and nuts according to claim 4, characterized in that: The lifting and driving mechanism of the discharge door includes a lifting and driving motor, a rack and a gear. The rack is vertically fixed on the outer wall of the discharge door, and the lifting and driving motor is fixedly installed on the side wall of the rectangular opening. The output end of the lifting and driving motor is connected to one of the gears, and the gear is meshed with the rack.

6. The batch drying equipment for coffee beans and nuts according to claim 1, characterized in that: A tail gas outlet is also provided on the side wall of the first drying chamber, and the tail gas outlet is communicated with the heating chamber through a recovery pipeline.

7. The batch drying equipment for coffee beans and nuts according to claim 1, characterized in that: The second drying screen is provided with a material discharge opening, and a material discharge plate is rotatably connected to the material discharge opening.

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