Hot air circulation baking machine

Abstract

The invention relates to a hot air circulation roasting machine; it comprises a feeder, a bottom discharge port of the feeder is connected to a feed hopper arranged on the roaster through a feed pipe, a suction pipe connected to a feed fan is arranged on the top of the feed hopper, the discharge port of the roaster is connected to a cooling plate, the discharge port of the cooling plate is connected to a silo of a stone remover through a stone remover feed pipe, a suction pipe arranged on the top of the silo is connected to a cooling air duct, one end of the cooling air duct is connected to the cooling fan, and the other end is connected to the bottom of the cooling plate, the upper part of the cooling fan is connected to the upper part of a cooling dust removal cylinder through a pipe, and the hot air outlet on the top of the roaster is connected to the air inlet of a hot air dust removal barrel through a hot air pipe; the roaster has the advantages of reasonable structural design, heat energy can be recycled, thermal efficiency is improved, tail gas is discharged after treatment, and the environment is not polluted.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee machinery and equipment, in particular to a hot air circulation roasting machine. Background Art

[0002] Hot air circulation baking machine is a highly efficient cooking equipment, widely used in the food processing industry, especially in occasions that require uniform heating and rapid drying. This equipment ensures that the food is heated evenly through the hot air circulation system, thereby improving the quality and efficiency of baking. In the past, the hot air energy of baking machines could not be recycled, the energy consumption was large, the exhaust gas was not treated and was directly discharged, the hot air dust removal cylinder was not cleaned in time, and it often caught fire, posing a great safety hazard. Summary of the invention

[0003] The object of the present invention is to provide a hot air circulation baking machine to solve the problems arising from the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hot air circulation roasting machine, comprising a feeder, a bottom discharge port of the feeder is connected to a feed hopper arranged on the roaster through a feed pipe, a suction pipe connected to a feed fan is arranged on the top of the feed hopper, the discharge port of the roaster is connected to a cooling plate, the discharge port of the cooling plate is connected to a silo of a stone remover through a stone remover feed pipe, a suction pipe arranged on the top of the silo is connected to a cooling air duct, one end of the cooling air duct is connected to a cooling fan, and the other end of the cooling air duct is connected to a cooling fan. One end is connected with the bottom of the cooling plate, the upper part of the cooling fan is connected with the upper part of the cooling dust removal cylinder through a pipe, the hot air outlet on the top of the baking machine is connected with the air inlet of the hot air dust removal barrel through a hot air duct, and the top of the hot air dust removal barrel is provided with an exhaust gas outlet, and the exhaust gas outlet is connected to the exhaust gas inlet arranged on the top of one end of the burner through the exhaust gas duct, the exhaust gas inlet is connected with the furnace of the burner, the other end of the furnace is provided with an exhaust port, and a fireproof barrel is provided in the furnace, and the exhaust duct is connected with a hot air exhaust duct connected to the hot air blower.

[0005] Preferably, a first cooling valve group flap is provided on the cooling air duct between the cooling air duct and the destoner feeding pipe, and a second cooling valve group flap is provided on the destoner feeding pipe near the cooling air duct.

[0006] Preferably, the exhaust gas pipeline is provided with a first air distribution valve, and the hot air exhaust gas pipeline is provided with a second air distribution valve and a fresh air distribution valve.

[0007] Preferably, a heat-insulating layer is provided in the furnace.

[0008] Preferably, the hot air dust removal barrel includes a bracket, a hot air dust removal cylinder is provided on the upper part of the bracket, a feed port is provided on the upper part of the hot air dust removal cylinder, the feed port is connected to the hot air motor through a pipe, a water spray pipe is provided on the outer side of the upper part of the hot air dust removal cylinder, a discharge hopper is provided at the lower part of the bracket, an integrated barrel is provided at the lower part of the discharge hopper, a rotary level switch is provided at the lower part of the discharge hopper, an air blowing duct is provided at the lower part of the rotary level switch, an air shut-off device is provided between the discharge hopper and the integrated barrel, and a silver skin discharge port is provided on one side of the upper part of the hot air dust removal barrel.

[0009] Preferably, the cooling plate includes a body, the interior of the body is divided into two layers, an upper layer and an lower layer, a reduction motor is provided on the lower layer, the output shaft of the reduction motor is connected to the stirring shaft provided on the upper layer, a connecting column is installed on the stirring shaft, a plurality of cross bars are vertically installed on the connecting column, a plurality of cooling stirring arm pressurizing mechanisms and stirring paddle mechanisms are respectively provided on two adjacent cross bars, a cooling air duct is provided on the lower layer, an air outlet at one end of the cooling air duct corresponds to the lower layer, and the other end of the cooling air duct is connected to a cooling fan provided outside the body.

[0010] Preferably, the cooling stirring arm pressurizing mechanism includes a stirring fixed column mounted on the cross bar, the upper end of the stirring fixed column is vertically connected to one end of the fixed adjusting pressure block, the other end of the fixed adjusting pressure block is connected to the fisheye bearing, a pressurizing fixed rod is vertically mounted on the fisheye bearing, the lower end of the pressurizing fixed rod is connected to the telescopic rod, the telescopic rod passes through the pressurizing sleeve and is fixed to the connecting piece at its lower end by a nut, a spring is mounted on the telescopic rod inside the pressurizing sleeve, spring pressurizing plates are provided at both ends of the spring, a pressure adjusting screw for adjusting the spring tension is mounted on the spring pressurizing plate, the lower end of the stirring fixed column is connected to a spring sheet, the end of the spring sheet is connected to a material paddle sheet, a groove is provided on the connecting piece, the spring sheet reciprocates in the groove, the spring sheet is arc-shaped, and the stirring paddle mechanism includes a sleeve mounted on the cross bar, the sleeve is longitudinally mounted with a fixing column, and the lower end of the fixing column is provided with a stirring paddle.

[0011] Preferably, the cooling stirring arm pressurizing mechanism and the stirring paddle mechanism are arranged alternately.

[0012] Preferably, the height of the stirring paddle is higher than the height of the material paddle.

[0013] The present invention adds a hot air dust removal barrel, which adds water spraying, temperature and material level sensors to reduce the probability of fire. The silver skin and the like coming out of the baking machine can be cleaned up in time to prevent fire. The exhaust gas is burned in the burner and then discharged cleanly, thereby reducing pollution to the environment.

[0014] The invention has the advantages of reasonable structural design, heat energy can be recycled, thermal efficiency is improved, tail gas is discharged after treatment, and the environment is not polluted. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a top view of the structure of the present invention.

[0017] Figure 3 It is a structural schematic diagram of the connection between the burner and the hot air dust removal barrel of the present invention.

[0018] Figure 4 It is a schematic structural diagram of the burner of the present invention.

[0019] Figure 5 It is a schematic structural diagram of the hot air dust removal barrel of the present invention.

[0020] Figure 6 It is a structural side view of the hot air dust removal barrel of the present invention.

[0021] Figure 7 It is a schematic structural diagram of the cooling stirring arm pressurizing mechanism of the present invention.

[0022] Figure 8 It is a schematic diagram of the internal structure of the cooling stirring arm pressurizing mechanism of the present invention.

[0023] Fig. 9 It is a partially enlarged schematic diagram of the cooling air duct of the present invention. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely 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 the embodiments.

[0025] See also Figure 1As shown in FIG. 9 , an embodiment of the present invention is a hot air circulation baking machine, comprising a feeder 1, a bottom discharge port of the feeder 1 is connected to a feed hopper 4 arranged on a baking machine 3 through a feed pipe 2, a suction pipe 6 connected to a feed fan 5 is arranged on the top of the feed hopper 4, the discharge port of the baking machine 3 is connected to a cooling plate 7, the discharge port of the cooling plate 7 is connected to a silo 10 of a stone removing machine 9 through a stone removing machine feed pipe 8, a suction pipe 11 arranged on the top of the silo 10 is connected to a cooling air duct 12, one end of the cooling air duct 12 is connected to a cooling fan 13, and the other end thereof is connected to the bottom of the cooling plate 7. The upper part of the cooling fan 13 is connected to the upper part of the cooling dust removal barrel 14 through a pipeline, the hot air outlet on the top of the roasting machine 3 is connected to the air inlet 17 of the hot air dust removal barrel 16 through a hot air duct 15, and the top of the hot air dust removal barrel 16 is provided with an exhaust gas outlet 18, and the exhaust gas outlet 18 is connected to the exhaust gas inlet 21 arranged at the top of one end of the burner 20 through an exhaust gas duct 19, and the exhaust gas inlet 21 is connected to the furnace 22 of the burner 20, and the other end of the furnace 22 is provided with an exhaust port 23, and a fireproof barrel 24 is provided in the furnace 22, and the exhaust duct 19 is connected with a hot air exhaust duct 26 connected to the hot air blower 25.

[0026] Furthermore, a first cooling valve group flap 27 is provided on the cooling air duct 12 between the cooling air duct 12 and the stone removing machine feeding pipe 8, and a second cooling valve group flap 28 is provided on the stone removing machine feeding pipe 8 near the cooling air duct 12; when the roasting machine 3 completes roasting, the first cooling valve group flap 27 is opened, the second cooling valve group flap 28 is closed, the cooling fan 13 is opened, the discharge door of the roasting machine 3 is opened, the material enters the cooling plate 7, and starts to cool. When it is cooled to the discharge temperature, stone removal begins. At this time, the first cooling valve group flap 27 is closed, the second cooling valve group flap 28 is opened, and the cooling fan 13 is started to suck the material into the silo 10 of the stone removing machine 9, and the material is separated from stones, metals, etc. by different specific gravity.

[0027] Furthermore, the exhaust gas pipeline 19 is provided with a first air distribution valve 29, and the hot air exhaust gas pipeline 26 is provided with a second air distribution valve 30 and a fresh air distribution valve 31; during the baking process, the hot air passes through the hot air dust removal barrel 16 to separate the silver skin and the exhaust gas, and the generated hot exhaust gas is controlled according to the central control system, and the opening sizes of the first air distribution valve 29, the second air distribution valve 30 and the fresh air distribution valve 31 are adjusted to control the air intake of each pipeline. The smoke in the latter stage of baking is large, the opening of the first air distribution valve 29 is larger, the second air distribution valve 30 is opened smaller, and the fresh air distribution valve 31 is larger. The smoke in the former stage of baking is small, the opening of the first air distribution valve 29 is smaller, the second air distribution valve 30 is opened larger, and the fresh air distribution valve 31 is opened smaller. The fresh air distribution valve 31 is mainly used to distribute fresh air to ensure the additional oxygen required for combustion and to ensure the flavor of baking.

[0028] Furthermore, a heat-insulating layer 32 is provided in the furnace 22 to keep the tail gas at a suitable temperature and prevent the heat from flowing into the water.

[0029] Furthermore, the hot air dust removal barrel 16 includes a bracket 33, a hot air dust removal barrel 34 is provided on the upper part of the bracket 33, a feed port 35 is provided on the upper part of the hot air dust removal barrel 34, and the feed port 35 is connected to the hot air motor 36 through a pipeline, a water spray pipe 37 is provided on the upper outer side of the hot air dust removal barrel 34, a discharge hopper 38 is provided at the lower part of the bracket 33, an integrated barrel 39 is provided at the lower part of the discharge hopper 38, a rotary resistance level switch 40 is provided at the lower part of the discharge hopper 38, and a blowing air duct 41 is provided at the lower part of the rotary resistance level switch 40, an air stopper 42 is provided between the discharge hopper 38 and the integrated barrel 39, and a silver skin discharge port 43 is provided on one side of the upper part of the hot air dust removal barrel 34; first, coffee beans enter through the feed port 35, and the hot air motor 36 starts The silver skin in the coffee beans is blown out through the silver skin discharge port 43. When the temperature is sensed to be relatively high, the solenoid valve is started, the water pump pumps out the water in the water pipe, and sprays water into the hot air dust removal cylinder 34 to cool it down until it reaches a safe temperature. The coffee beans further pass through the hot air dust removal cylinder 34 into the discharge hopper 38. The lower part of the discharge hopper 38 is conical and relatively narrow. When the silver skin reaches the position of the rotary resistance level switch 40, the rotary resistance level switch 40 is damped and no longer rotates, and the air duct 41 starts to blow air to blow up the material so that the material can be discharged smoothly. After blowing several times, the rotary resistance level switch 40 still cannot rotate and the rotary resistance still cannot work. The alarm is manually handled through the inspection port. After processing, the coffee beans pass through the air lock 42 and fall into the integrated barrel 39.

[0030] Furthermore, the cooling plate 7 includes a body 44, the interior of which is divided into two layers, an upper layer and an lower layer, by a partition 45. The lower layer is provided with a reduction motor 46, the output shaft of the reduction motor 46 is connected to a stirring shaft 47 arranged on the upper layer, a connecting column 48 is installed on the stirring shaft 47, a plurality of groups of cross bars 49 are vertically installed on the connecting column 48, and a plurality of groups of cooling stirring arm pressurizing mechanisms and stirring paddle mechanisms are respectively provided on two adjacent cross bars 49, the lower layer is provided with a cooling air duct 12, the air outlet at one end of the cooling air duct 12 corresponds to the lower layer, and the other end of the cooling air duct 12 is connected to a cooling fan 13 arranged outside the body 44; the material is in the cooling plate 7, and in order to speed up the cooling speed of the material, the cooling stirring arm pressurizing mechanism and the stirring paddle mechanism rotate driven by the reduction motor 46, and the material is stirred up and down to make the material evenly cooled and heated to ensure the taste.

[0031] Furthermore, the cooling stirring arm pressurizing mechanism includes a stirring fixed column 50 installed on the cross bar 49, the upper end of the stirring fixed column 50 is vertically connected to one end of the fixed adjusting pressure block 51, the other end of the fixed adjusting pressure block 51 is connected to the fisheye bearing 52, a pressurizing fixed rod 53 is vertically installed on the fisheye bearing 52, the lower end of the pressurizing fixed rod 53 is connected to the telescopic rod 54, the telescopic rod 54 passes through the pressurizing sleeve 55 and is fixed to the connecting piece 57 at its lower end by a nut 56, and a spring 58 is sleeved on the telescopic rod 54 located inside the pressurizing sleeve 55. Spring pressure plates 59 are provided at both ends of the spring 58, and a pressure regulating screw 60 for adjusting the spring tension is installed on the spring pressure plate 59. The lower end of the stirring fixed column 50 is connected to a spring plate 61, and the end of the spring plate 61 is connected to a material-pickup plate 62. A groove 66 is provided on the connecting piece 57, and the spring plate 61 reciprocates in the groove 66. The spring plate 61 is arc-shaped, and the stirring paddle mechanism includes a sleeve 63 installed on the cross bar 49, and a fixing column 64 is longitudinally installed on the sleeve 63, and a stirring paddle 65 is provided at the lower end of the fixing column 64.

[0032] Furthermore, the cooling stirring arm pressurizing mechanism and the stirring paddle mechanism are arranged alternately.

[0033] Furthermore, the height of the stirring paddle 65 is higher than the height of the material paddle 62, so as to ensure that the material can be turned up and down.

[0034] Working principle: First, the roasting machine 3 is ignited, the machine body starts to heat up, and the machine temperature is raised to the unloading temperature. During this period, the material can be loaded. The loading fan 5 is started, and the loading hopper 4 is sucked into a negative pressure. The raw beans in the loading machine 1 are sucked into the loading hopper 4 through the suction pipe 6. The unloading valve is opened, and the beans enter the drum of the roasting machine 3 and start roasting. After roasting, the first cooling valve group flap 27 is opened, the second cooling valve group flap 28 is closed, the cooling fan 13 is opened, and the discharge door of the roasting machine 3 is opened. Enter the cooling plate 7 and start cooling. When the material is cooled to the discharge temperature, stone removal begins. At this time, the flap 27 of the first cooling valve group is closed, the flap 28 of the second cooling valve group is opened, and the cooling fan 13 is started to suck the material into the silo 10 of the stone removal machine 9. The material is separated from stones, metals, etc. by different specific gravity. The silver skin and debris generated during the stone removal process are started by the cooling fan 13. The silver skin and debris are sucked into the silo of the cooling dust removal cylinder 14 for recovery. During the baking process, the hot air passes through the hot air The dust removal barrel 16 separates the silver skin and the tail gas. The hot tail gas generated is controlled by the central control system. The opening sizes of the first air distribution valve 29, the second air distribution valve 30 and the fresh air distribution valve 31 are adjusted to control the air intake of each pipeline. The smoke in the latter part of baking is large, the opening of the first air distribution valve 29 is larger, the second air distribution valve 30 is opened smaller, and the fresh air distribution valve 31 is opened larger. The smoke in the former part of baking is small, the opening of the first air distribution valve 29 is smaller, the second air distribution valve 30 is opened larger, and the fresh air distribution valve 31 is opened smaller. The fresh air distribution valve 31 is mainly used to distribute fresh air to ensure the additional oxygen required for combustion and the flavor of baking. The exhaust gas generated by the hot air dust removal barrel 16 is connected to the exhaust gas inlet 21 set at the top of one end of the burner 20 through the exhaust gas outlet 18 through the exhaust gas pipeline 19. The exhaust gas inlet 21 is connected to the furnace 22 of the burner 20. The exhaust gas is recycled and reused, which reduces the power of the baking machine 3 and saves energy consumption. The remaining exhaust gas is burned to meet the standard emission without polluting the environment.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A hot air circulation baking machine, comprising a feeding machine (1), wherein a bottom discharge port of the feeding machine (1) is connected to a feeding hopper (4) provided on a baking machine (3) through a feeding pipe (2), and characterized in that: A suction pipe (6) connected to a feeding fan (5) is provided on the top of the upper hopper (4); the discharge port of the roasting machine (3) is connected to a cooling plate (7); the discharge port of the cooling plate (7) is connected to a silo (10) of a stone removing machine (9) through a stone removing machine feeding pipe (8); a suction pipe (11) provided on the top of the silo (10) is connected to a cooling air duct (12); one end of the cooling air duct (12) is connected to a cooling fan (13), and the other end thereof is connected to the bottom of the cooling plate (7); the upper part of the cooling fan (13) is connected to the upper part of a cooling dust removal cylinder (14) through a pipe; the roasting machine (3) ) is connected to an air inlet (17) of a hot air dust removal barrel (16) through a hot air duct (15); an exhaust gas outlet (18) is provided at the top of the hot air dust removal barrel (16); the exhaust gas outlet (18) is connected to an exhaust gas inlet (21) provided at the top of one end of a burner (20) through an exhaust gas duct (19); the exhaust gas inlet (21) is connected to a furnace (22) of the burner (20); an exhaust port (23) is provided at the other end of the furnace (22); a fireproof barrel (24) is provided in the furnace (22); the exhaust gas duct (19) is connected to a hot air exhaust gas duct (26) connected to the hot air blower (25).

2. A hot air circulation baking machine according to claim 1, characterized in that: A first cooling valve group flap (27) is provided on the cooling air duct (12) between the cooling air duct (12) and the destoner feeding pipeline (8), and a second cooling valve group flap (28) is provided on the destoner feeding pipeline (8) near the cooling air duct (12).

3. The hot air circulation baking machine according to claim 1, characterized in that: The exhaust gas pipeline (19) is provided with a first air distribution valve (29), and the hot air exhaust gas pipeline (26) is provided with a second air distribution valve (30) and a fresh air distribution valve (31).

4. The hot air circulation baking machine according to claim 1, characterized in that: A heat-insulating layer (32) is provided in the furnace (22).

5. The hot air circulation baking machine according to claim 1, characterized in that: The hot air dust removal barrel (16) comprises a bracket (33), a hot air dust removal cylinder (34) is provided at the upper part of the bracket (33), a feed port (35) is provided at the upper part of the hot air dust removal cylinder (34), the feed port (35) is connected to the hot air motor (36) through a pipeline, a water spray pipe (37) is provided on the outer side of the upper part of the hot air dust removal cylinder (34), a discharge hopper (38) is provided at the lower part of the bracket (33), an integrated barrel (39) is provided at the lower part of the discharge hopper (38), a rotary level switch (40) is provided at the lower part of the discharge hopper (38), an air blowing duct (41) is provided at the lower part of the rotary level switch (40), an air shut-off device (42) is provided between the discharge hopper (38) and the integrated barrel (39), and a silver skin discharge port (43) is provided on one side of the upper part of the hot air dust removal cylinder (34).

6. The hot air circulation baking machine according to claim 1, characterized in that: The cooling plate (7) comprises a machine body (44), the interior of which is divided into two layers, an upper layer and an lower layer, by a partition (45). The lower layer is provided with a reduction motor (46), the output shaft of the reduction motor (46) is connected to a stirring shaft (47) arranged on the upper layer, a connecting column (48) is installed on the stirring shaft (47), a plurality of groups of cross bars (49) are vertically installed on the connecting column (48), and a plurality of groups of cooling stirring arm pressure mechanisms and stirring paddle mechanisms are respectively provided on two adjacent cross bars (49), the lower layer is provided with a cooling air duct (12), the air outlet at one end of the cooling air duct (12) corresponds to the lower layer, and the other end of the cooling air duct (12) is connected to a cooling fan (13) arranged outside the machine body (44).

7. A hot air circulation baking machine according to claim 6, characterized in that: The cooling stirring arm pressurizing mechanism comprises a stirring fixed column (50) installed on the cross bar (49), the upper end of the stirring fixed column (50) is vertically connected to one end of the fixed adjusting pressure block (51), the other end of the fixed adjusting pressure block (51) is connected to the fisheye bearing (52), a pressurizing fixed rod (53) is vertically installed on the fisheye bearing (52), the lower end of the pressurizing fixed rod (53) is connected to the telescopic rod (54), the telescopic rod (54) passes through the pressurizing sleeve (55) and is fixed to the connecting piece (57) at its lower end by a nut (56), and a spring (58) is sleeved on the telescopic rod (54) located inside the pressurizing sleeve (55), and the spring (58) is 8), spring pressure plates (59) are provided at both ends, and a pressure regulating screw (60) for adjusting the spring tension is installed on the spring pressure plate (59), the lower end of the stirring fixed column (50) is connected to a spring plate (61), and the end of the spring plate (61) is connected to a material-pickup plate (62), and a groove (66) is provided on the connecting piece (57), and the spring plate (61) reciprocates in the groove (66), and the spring plate (61) is arc-shaped, and the stirring paddle mechanism includes a sleeve (63) installed on the cross bar (49), and a fixing column (64) is installed longitudinally on the sleeve (63), and a stirring paddle (65) is provided at the lower end of the fixing column (64).

8. The hot air circulation baking machine according to claim 6, characterized in that: The cooling stirring arm pressurizing mechanism and the stirring paddle mechanism are arranged alternately.

9. The hot air circulation baking machine according to claim 7, characterized in that: The height of the stirring paddle (65) is higher than the height of the material-prying paddle (62).

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