Efficient yeast metabolite drying system

Abstract

The utility model discloses an efficient yeast metabolite drying system which comprises a fluidized bed, a screen plate is arranged at the bottom of the fluidized bed, a plurality of ventilation openings are formed in the bottom of the screen plate, a spraying assembly is arranged at the top in the fluidized bed, and the ventilation opening in the side, close to a discharging opening, of the fluidized bed is connected with a second centrifugal fan. A steam condensate outlet of the hot air assembly is connected with a heat exchange pipe, the heat exchange pipe penetrates through the fluidized bed and is located between the spraying assembly and the net plate, the spraying assembly is connected with the backflow feeding assembly, and the flow stability of the tail end spray head is improved by additionally arranging the backflow assembly; wet materials caused by unstable atomization are avoided, and meanwhile heat in steam condensate water is recycled through the heat exchange pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of yeast production and processing equipment, in particular to an efficient yeast metabolite drying system. Background Art

[0002] The existing yeast metabolite drying system uses a fluidized bed, which transports liquid yeast metabolites to a spray assembly and sprays them on the top of the fluidized bed through the spray assembly. The drying is completed by high-temperature hot air provided by an air heat exchanger and cooled cold air at the discharge port.

[0003] The above process has the following problems:

[0004] Yeast metabolite top-spray fluidized bed, the steam energy consumption cost is high, the steam condensate is directly discharged, and the heat is wasted;

[0005] Secondly, the feed flow in the spray assembly is unstable, the atomization uniformity is poor, the wet material affects the efficiency, and the product moisture control is unstable. Utility Model Content

[0006] The utility model provides an efficient yeast metabolite drying system, aiming to solve the problems of waste of heat of steam condensed water, unstable flow in the spray component and poor atomization uniformity in the existing yeast metabolite drying system.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] An efficient yeast metabolite drying system includes a fluidized bed, a mesh plate is provided at the bottom of the fluidized bed, a plurality of vents are provided at the bottom of the mesh plate, a spray assembly is provided at the top of the fluidized bed, the vents on the side of the fluidized bed close to the discharge port are connected to a second centrifugal fan, and the remaining vents are all connected to the hot air outlet of the hot air assembly, the steam condensate outlet of the hot air assembly is connected to a heat exchange pipe, the heat exchange pipe runs through the fluidized bed and is located between the spray assembly and the mesh plate, and the spray assembly is connected to a reflux feed assembly.

[0009] Preferably, the spray assembly includes a spray pipe extending into the top of the fluidized bed, and the portion of the spray pipe located in the fluidized bed is provided with a plurality of discharge ports arranged at equal intervals, and each discharge port is provided with a spray head.

[0010] More preferably, the reflux feed assembly includes a metabolite storage tank, the discharge port of the metabolite storage tank is connected to the feed port of a circulation pump through a pipeline, the discharge port of the circulation pump is connected to the feed port of a spray pipe, a reflux pipe is connected in parallel on the side of the spray pipe close to the feed port, and the discharge port of the reflux pipe is connected to the feed port of the metabolite storage tank.

[0011] Furthermore, a flow control valve is provided on the spray pipe at a position between the return pipe connection and the first spray head.

[0012] Furthermore, the hot air component includes an air heat exchanger, the heat source inlet of the air heat exchanger is connected to the steam source through a steam inlet pipe, the cold source inlet of the air heat exchanger is connected to the air outlet of the first centrifugal fan through a pipeline, the hot air outlet of the air heat exchanger is provided with a hot air outlet pipe, and the steam condensate outlet of the air heat exchanger is connected to the heat exchange pipe through a steam condensate water pipe.

[0013] Specifically, the hot air outlet pipe is connected in parallel with a plurality of branches, each branch corresponds to all ventilation openings except the fluidized bed discharge port, and the branch is connected to the corresponding ventilation opening.

[0014] More specifically, the air inlets of the first centrifugal fan and the second centrifugal fan are both connected to the dehumidifier.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model uses heat exchange pipes to transport steam condensed water generated by heat exchange of hot air components. The heat exchange pipes pass through the fluidized bed to assist fluidized bed drying, making full use of residual heat and reducing steam consumption.

[0017] 2. The utility model provides a reflux feed component to allow excess material in the spray component to reflux, thereby improving the flow stability of the nozzle and avoiding the generation of wet material caused by unstable atomization. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of system connection of the present utility model;

[0019] In the figure: 1. Fluidized bed;

[0020] 2. Spray assembly; 201. Spray pipe; 202. Spray head;

[0021] 3. Ventilation holes;

[0022] 4. Hot air assembly; 401. First centrifugal fan; 402. Air heat exchanger; 403. Steam inlet pipe; 404. Steam condensate pipe; 405. Hot air outlet pipe;

[0023] 5. Heat exchange tube;

[0024] 6. Reflux feed assembly; 601. Metabolite storage tank; 602. Circulation pump; 603. Reflux pipe;

[0025] 7. Flow control valve; 8. Second centrifugal fan; 9. Mesh plate. DETAILED DESCRIPTION

[0026] As follows, embodiments are further described with reference to the accompanying drawings.

[0027] like Figure 1 As shown, as a preferred embodiment 1, an efficient yeast metabolite drying system includes a fluidized bed 1, a mesh plate 9 is provided at the bottom of the fluidized bed 1, a plurality of vents 3 are provided at the bottom of the mesh plate 9, a spray assembly 2 is provided at the top of the fluidized bed 1, the vents 3 on the side of the fluidized bed 1 close to the discharge port are connected to the second centrifugal fan 8, and the remaining vents 3 are all connected to the hot air outlet of the hot air assembly 4, the steam condensate outlet of the hot air assembly 4 is connected to the heat exchange pipe 5, the heat exchange pipe 5 passes through the fluidized bed 1 and is located between the spray assembly 2 and the mesh plate 9, recovers the heat of the steam condensate, assists in drying the fluidized bed 1, thereby reducing the amount of steam used, the spray assembly 2 is connected to the reflux feed assembly 6, and the excess material of the spray assembly 2 is refluxed to ensure a stable spray flow rate.

[0028] The spray assembly 2 includes a spray pipe 201 extending into the top of the fluidized bed 1. The portion of the spray pipe 201 located in the fluidized bed 1 is provided with a plurality of equally spaced discharge ports, each of which is provided with a nozzle 202, ensuring a top-spraying structure.

[0029] The reflux feed assembly 6 includes a metabolite storage tank 601, the outlet of which is connected to the feed inlet of a circulation pump 602 via a pipeline. The outlet of the circulation pump 602 is connected to the feed inlet of the spray pipe 201. A reflux pipe 603 is connected in parallel to the side of the spray pipe 201 near the feed inlet. The outlet of the reflux pipe 603 is connected to the feed inlet of the metabolite storage tank 601. This forms a circular reflux, with excess material re-entering the metabolite storage tank 601 through the reflux pipe 603. The circulation pump 602 provides the driving force for the spraying and reflux.

[0030] The hot air assembly 4 includes an air heat exchanger 402. The heat source inlet of the air heat exchanger 402 is connected to the steam source via a steam inlet pipe 403. The cold source inlet of the air heat exchanger 402 is connected to the air outlet of the first centrifugal fan 401 via a pipeline. The hot air outlet of the air heat exchanger 402 is provided with a hot air outlet pipe 405. The steam condensate outlet of the air heat exchanger 402 is connected to the heat exchange pipe 5 via a steam condensate water pipe 404. This ensures the dry operation of the fluidized bed 1.

[0031] The hot air outlet pipe 405 is connected in parallel with several branches, each branch corresponding to all the vents 3 except the discharge port of the fluidized bed 1, and the branch is connected to the corresponding vent 3 to ensure the dry use of the fluidized bed 1.

[0032] The air inlets of the first centrifugal fan 401 and the second centrifugal fan 8 are both connected to a dehumidifier to ensure the dry use of the fluidized bed 1.

[0033] As a preferred embodiment 2, the spray pipe 201 is provided with a flow control valve 7 between the connection point of the return pipe 603 and the first nozzle 202. This can further accurately control the flow in the spray pipe 201, ensure the flow stability of the nozzle 202, and avoid the generation of wet material caused by unstable atomization.

[0034] The working principle of this utility model:

[0035] The utility model transports the steam condensed water generated by the heat exchange of the hot air component 4 through the heat exchange pipe 5, and the heat exchange pipe 5 passes through the fluidized bed 1 to assist the fluidized bed 1 in drying, making full use of the residual heat and reducing steam consumption;

[0036] The utility model provides a reflux feed assembly 6 to allow excess material in the spray assembly 2 to reflux, thereby improving the flow stability of the spray head 202 and avoiding the generation of wet material caused by unstable atomization.

Claims

1. An efficient yeast metabolite drying system, comprising a fluidized bed (1), wherein a mesh plate (9) is provided at the bottom of the fluidized bed (1), a plurality of vents (3) are provided at the bottom of the mesh plate (9), and a spray assembly (2) is provided at the top of the fluidized bed (1), characterized in that: The vent (3) on the side of the fluidized bed (1) close to the discharge port is connected to the second centrifugal fan (8), and the remaining vents (3) are all connected to the hot air outlet of the hot air component (4). The steam condensate outlet of the hot air component (4) is connected to the heat exchange tube (5), and the heat exchange tube (5) passes through the fluidized bed (1) and is located between the spray component (2) and the mesh plate (9). The spray component (2) is connected to the reflux feed component (6).

2. The efficient yeast metabolite drying system according to claim 1, characterized in that: The spray assembly (2) comprises a spray pipe (201) extending into the top of the fluidized bed (1); a portion of the spray pipe (201) located within the fluidized bed (1) is provided with a plurality of equally spaced discharge ports, each of which is provided with a spray head (202).

3. The efficient yeast metabolite drying system according to claim 2, characterized in that: The reflux feed assembly (6) includes a metabolite storage tank (601), the discharge port of the metabolite storage tank (601) is connected to the feed port of a circulation pump (602) via a pipeline, the discharge port of the circulation pump (602) is connected to the feed port of a spray pipe (201), a reflux pipe (603) is connected in parallel to the side of the spray pipe (201) close to the feed port, and the discharge port of the reflux pipe (603) is connected to the feed port of the metabolite storage tank (601).

4. The efficient yeast metabolite drying system according to claim 3, characterized in that: The spray pipe (201) is provided with a flow control valve (7) at a position between the connection point of the return pipe (603) and the first spray head (202).

5. The efficient yeast metabolite drying system according to claim 4, characterized in that: The hot air component (4) includes an air heat exchanger (402), the heat source inlet of the air heat exchanger (402) is connected to the steam source through a steam inlet pipe (403), the cold source inlet of the air heat exchanger (402) is connected to the air outlet of the first centrifugal fan (401) through a pipeline, the hot air outlet of the air heat exchanger (402) is provided with a hot air outlet pipe (405), and the steam condensate outlet of the air heat exchanger (402) is connected to the heat exchange pipe (5) through a steam condensate water pipe (404).

6. The efficient yeast metabolite drying system according to claim 5, characterized in that: The hot air outlet pipe (405) is connected in parallel with a plurality of branches, each branch corresponding to all ventilation openings (3) except the outlet of the fluidized bed (1), and the branch is connected to the corresponding ventilation opening (3).

7. The efficient yeast metabolite drying system according to claim 6, characterized in that: The air inlets of the first centrifugal fan (401) and the second centrifugal fan (8) are both connected to the dehumidifier.

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