Air volume balance control system of intelligent air cooling system of fluidized bed

Abstract

The utility model discloses an air volume balance control system of an intelligent air cooling system of a fluidized bed, which comprises internal circulation airflow and open-loop airflow, and the temperature of the internal circulation airflow and the stability of air pressure in the cooling system are controlled by adjusting the flow speed of the open-loop airflow; the open-loop airflow is controlled by a first valve, the first valve comprises a valve body, a valve rod is rotationally arranged in the valve body, a valve plate is fixedly arranged on the valve rod, a servo motor is arranged on one side of the valve body, a gearbox is arranged on one side of the servo motor, and the servo motor drives the valve rod through the gearbox; the temperature value and the air speed value of the air flow in the fluidized bed can be set and stabilized according to the requirements of the cigarette processing technology, so that the temperature and the flow speed of the air flow passing through the fluidized bed keep dynamic balance.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluidized bed air cooling, and particularly relates to an air volume balance control system of a fluidized bed intelligent air cooling and temperature reduction system. Background Art

[0002] The fluidized bed device uses an air flow internal circulation system. As the working time of the equipment progresses and the machine generates heat, the temperature of the fluidized bed circulating air flow rises up to 42 - 48 °C. The aroma and flavor of the cut tobacco volatilize greatly, and the moisture of the cut tobacco evaporates, losing about 2.7 - 3% on the basis of the cut tobacco requirements. This seriously affects the technological indexes of the cigarette and increases the failure rate of the equipment. During the cigarette production process, the flow rate of the negative pressure gas is not constant. Affected by the batches of the cut tobacco and the working environment of the equipment, the temperature and flow rate of the circulating air flow keep changing and are difficult to control. Content of the Utility Model

[0003] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide an air volume balance control system of a fluidized bed intelligent air cooling and temperature reduction system.

[0004] The technical solution adopted by the utility model is as follows:

[0005] An air volume balance control system of a fluidized bed intelligent air cooling and temperature reduction system includes an internal circulation air flow and an open-loop air flow. By adjusting the flow rate of the open-loop air flow, the temperature of the internal circulation air flow and the stability of the air pressure in the temperature reduction system are controlled; the open-loop air flow is controlled by a first valve. The first valve includes a valve body, a valve rod is rotatably arranged in the valve body, a valve plate is fixedly arranged on the valve rod, a servo motor is arranged on one side of the valve body, a gearbox is arranged on one side of the servo motor, and the servo motor drives the valve rod through the gearbox.

[0006] Preferably, the utility model further includes a fuselage, a fluidized bed is fixedly arranged in the fuselage, cut tobacco enters the fluidized bed from the feed inlet of the fuselage to form a cut tobacco flow; the servo motor and the gearbox are respectively detachably installed on the fuselage.

[0007] Preferably, a circulation fan is arranged on one side of the fluidized bed, and the internal circulation air flow is controlled by the circulation fan.

[0008] Preferably, there are two forks on the internal circulation air flow, an air inlet is fixedly arranged on the fuselage, one of the forks is communicated with the air inlet, and the other fork is connected to the outside of the fuselage to form the open-loop air flow.

[0009] Preferably, the circulation fan is fixedly connected to the fuselage, an air distribution box is arranged between the circulation fan and the fluidized bed, and the air distribution box is fixedly connected to the fuselage.

[0010] Preferably, the output end of the circulating fan conveys gas to the fluidized bed through the air distribution box, and the gas converges above the fluidized bed and then returns to the input end of the circulating fan.

[0011] Preferably, a secondary sorting nozzle device and a primary sorting nozzle device are provided on one side of the fluidized bed. The secondary sorting nozzle device and the primary sorting nozzle device are respectively fixedly connected to the fuselage, and the air distribution box is respectively communicated with the primary sorting nozzle device, the secondary sorting nozzle device and the fluidized bed.

[0012] Preferably, a gas storage tank is further included. A gas storage tank inlet air pipe and a gas storage tank outlet air pipe are respectively fixedly provided on both sides of the gas storage tank. The open-loop air flow enters from the gas storage tank inlet air pipe and flows out from the gas storage tank outlet air pipe; a differential pressure sensor is provided on the gas storage tank inlet air pipe, and the gas storage tank outlet air pipe is connected to a dust removal system outside the system.

[0013] The beneficial effects of the present invention are as follows: As an air volume balance control system of a fluidized bed intelligent air-cooling and temperature-lowering system, the present invention can set a wind speed value capable of stabilizing the temperature in the fluidized bed according to the requirements of the cigarette processing technology, so that the temperature and flow rate of the air flow passing through the fluidized bed maintain a dynamic balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following further describes the present invention in detail with reference to the drawings and specific implementation methods.

[0015] Figure 1 is a schematic structural diagram of the present invention;

[0016] Figure 2 is a schematic structural diagram of the gas storage tank and the first valve in Embodiment 1 of the present invention

[0017] Figure 3 is the present invention Figure 2 schematic structural diagram of the first valve;

[0018] Figure 4 is a schematic structural diagram of the gas storage tank in Embodiment 2 of the present invention;

[0019] Figure 5 is the present invention Figure 4 schematic side view structure diagram;

[0020] Figure 6 is the present invention Figure 5 schematic structure diagram in the A-A direction;

[0021] Figure 7 is the present invention Figure 4Schematic diagram of the structure after the tank body and the bracket are hidden;

[0022] Figure 8 This is the utility model Figure 7 Schematic diagram of the structure of the related components of the rotating rod;

[0023] Figure 9 This is the utility model Figure 8 Schematic diagram of the structure of a positioning ring on the lower side;

[0024] Figure 10 This is the utility model Figure 9 Schematic diagram of the structure of the arc-shaped wedge block;

[0025] Figure 11 This is the utility model Figure 8 Schematic diagram of the structure after the upper spring and the lower spring are hidden;

[0026] Figure 12 This is the utility model Figure 11 Schematic diagram of the top view structure. Specific embodiments

[0027] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model, that is, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings herein can be arranged and designed in various different configurations.

[0028] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] The following will be combined with Figure 1-12 to illustrate the specific embodiments of the present utility model:

[0030] Embodiment 1. An air volume balance control system for an intelligent air-cooling temperature reduction system of a fluidized bed, including a fuselage 11. A fluidized bed 18 is fixedly arranged inside the fuselage 11. Cut tobacco enters the fluidized bed 18 from the feed port of the fuselage 11 to form a cut tobacco stream 25. A circulation fan 15 is arranged on one side of the fluidized bed 18. The circulation fan 15 is fixedly connected to the fuselage 11. An air distribution box 16 is arranged between the circulation fan 15 and the fluidized bed 18. The air distribution box 16 is fixedly connected to the fuselage 11. The output end of the circulation fan 15 transports gas to the fluidized bed 18 through the air distribution box 16. A part of the gas converges above the fluidized bed 18 and then returns to the input end of the circulation fan 15 to form an internal circulation air flow 21 in a cycle. There are two forks on the internal circulation air flow 21. An air inlet 27 is fixedly arranged on one side of the fuselage 11. One of the forks is communicated with the air inlet 27, and the other fork is connected to the outside of the fuselage 11 to form an open-loop air flow 52. An air storage tank 23 is arranged on the fuselage 11. The open-loop air flow 52 passes through the air storage tank 23. An air storage tank inlet air pipe 29 and an air storage tank outlet air pipe 30 are respectively arranged on both sides of the air storage tank 23. The open-loop air flow 52 enters from the air storage tank inlet air pipe 29 and flows out from the air storage tank outlet air pipe 30. By adjusting the flow rate of the open-loop air flow 52, the temperature of the internal circulation air flow 21 and the stability of the air pressure in the temperature reduction system are controlled.

[0031] Beneficially, the air storage tank inlet air pipe 29 and the air storage tank outlet air pipe 30 are respectively fixedly connected to the air storage tank 23. A differential pressure sensor 26 is arranged on the air storage tank inlet air pipe 29. A first valve 22 is arranged on one side of the air storage tank 23 close to the air storage tank inlet air pipe 29. The first valve 22 includes a valve body 65. The valve body 65 is fixedly connected to the air storage tank inlet air pipe 29. A valve rod 63 is rotatably arranged inside the valve body 65. A valve plate 64 is fixedly arranged on the valve rod 63. A servo motor 61 is arranged on one side of the valve body 65. A gearbox 62 is arranged on one side of the servo motor 61. The servo motor 61 drives the valve rod 63 through the gearbox 62. The servo motor 61 and the gearbox 62 are respectively detachably installed on the fuselage 11.

[0032] Embodiment 2, an air volume balance control system for an intelligent air-cooling system of a fluidized bed, including a fuselage 11, a fluidized bed 18 is fixedly arranged inside the fuselage 11, and cut tobacco enters the fluidized bed 18 from the feed port of the fuselage 11 to form a cut tobacco flow 25; a circulation fan 15 is arranged on one side of the fluidized bed 18, the circulation fan 15 is fixedly connected to the fuselage 11, and an air distribution box 16 is arranged between the circulation fan 15 and the fluidized bed 18, and the air distribution box 16 is fixedly connected to the fuselage 11; the output end of the circulation fan 15 transports gas to the fluidized bed 18 through the air distribution box 16, and a part of the gas converges above the fluidized bed 18 and then returns to the input end of the circulation fan 15 to form an internal circulation air flow 21 in a cycle; there are two forks on the internal circulation air flow 21, an air inlet 27 is fixedly arranged on one side of the fuselage 11, one of the forks is communicated with the air inlet 27, and the other fork is connected to the outside of the fuselage 11 to form an open-loop air flow 52; an air storage tank 23 is arranged on the fuselage 11, the open-loop air flow 52 penetrates through the air storage tank 23, an air storage tank inlet air pipe 29 and an air storage tank outlet air pipe 30 are respectively arranged on both sides of the air storage tank 23, the open-loop air flow 52 enters from the air storage tank inlet air pipe 29 and flows out from the air storage tank outlet air pipe 30, and by adjusting the flow rate of the open-loop air flow 52, the temperature of the internal circulation air flow 21 and the stability of the air pressure in the cooling system are controlled.

[0033] Beneficially, the air storage tank 23 includes a tank body 31, a support 32 is fixedly arranged on one side of the tank body 31, the support 32 is fixedly connected to the fuselage 11, a movable plate 37 is slidably arranged inside the tank body 31, a connecting plate 36 is fixedly arranged on one side of the movable plate 37, a mounting plate 33 is detachably installed on the connecting plate 36, a rotating rod 38 is arranged on the mounting plate 33, a thread 51 is arranged on the rotating rod 38, the rotating rod 38 is in threaded cooperation with the mounting plate 33, upper springs 42 and lower springs 43 are respectively arranged on both sides of the mounting plate 33, and both ends of the rotating rod 38 are rotatably connected to the support 32. According to the cooling requirement of the fluidized bed 18, a wind speed value capable of stabilizing the temperature inside the fluidized bed 18 is set; the movable plate 37 inside the air storage tank 23 moves, and while using the upper spring 42 and the lower spring 43 to stabilize the wind speed setting value, the pressure inside the fluidized bed is stabilized.

[0034] Advantageously, a secondary sorting nozzle device 17 and a primary sorting nozzle device 19 are provided on one side of the fluidized bed 18. The secondary sorting nozzle device 17 and the primary sorting nozzle device 19 are respectively fixedly connected to the fuselage 11. The air distribution box 16 is respectively communicated with the primary sorting nozzle device 19, the secondary sorting nozzle device 17 and the fluidized bed 18. A cyclone dust collector 28 is provided at the input end of the circulation fan 15. The cyclone dust collector 28 is fixedly connected to the fuselage 11. A second valve 14 is provided between the cyclone dust collector 28 and the circulation fan 15. The pressure of the compressed air for primary sorting is adjusted by a regulating valve, which plays a decisive role in the sorting effect of the stems and cut tobacco here.

[0035] Advantageously, an air inlet pipe 29 for the air storage tank is fixedly provided on one side of the tank body 31. The air inlet pipe 29 for the air storage tank penetrates through the tank body 31. An air outlet pipe 30 for the air storage tank is fixedly provided on the movable plate 37. The air outlet pipe 30 for the air storage tank penetrates through the movable plate 37. A control cavity 55 is formed between the inner wall of the tank body 31 and the movable plate 37. A limiting ring 54 is fixedly provided on the inner wall of the tank body 31. The limiting ring 54 is located in the control cavity 55. The air inlet pipe 29 for the air storage tank and the air outlet pipe 30 for the air storage tank are respectively communicated with the control cavity 55.

[0036] Advantageously, the upper spring 42 and the lower spring 43 are respectively sleeved on the periphery of the rotating rod 38. One control disk 41 is detachably installed at one end of the upper spring 42 and the lower spring 43 away from the mounting plate 33. One sliding rod 39 is fixedly provided on each control disk 41. One slider 40 is respectively provided at both ends of each sliding rod 39.

[0037] Advantageously, a control cylinder 34 is provided between the two sliding rods 39. The cylinder barrel and the piston rod of the control cylinder 34 are respectively fixedly connected to the two sliding rods 39. A chute 35 is fixedly provided on the bracket 32. The slider 40 is slidably connected with the chute 35.

[0038] Advantageously, an upper limit block 44 and a lower limit block 45 are respectively fixedly provided at both ends of the rotating rod 38. The projections of the upper limit block 44 and the lower limit block 45 do not coincide. The upper limit block 44 is located on the side of the mounting plate 33 away from the upper spring 42. The lower limit block 45 is located on the side of the mounting plate 33 away from the lower spring 43. A positioning ring 47 is respectively provided between the upper limit block 44 and the upper spring 42, and between the lower limit block 45 and the lower spring 43. One end of the two positioning rings 47 is respectively fixedly connected to the upper spring 42 and the lower spring 43. The two positioning rings 47 are respectively located between the two control disks 41 and the rotating rod 38.

[0039] Advantageously, three arc-shaped wedge blocks 46 are provided in each of the positioning rings 47. The arc-shaped wedge blocks 46 are located between the positioning rings 47 and the rotating rod 38. The gap formed by the three arc-shaped wedge blocks 46 cooperates with the upper limit block 44 and the lower limit block 45.

[0040] Advantageously, there is a gap between the arc-shaped wedge block 46 and the positioning ring 47. A fixing pin 48 is provided at one end of the arc-shaped wedge block 46 away from the rotating rod 38. A control spring 50 is provided between the fixing pin 48 and the arc-shaped wedge block 46. Both ends of the control spring 50 are fixedly connected to the arc-shaped wedge block 46 and the fixing pin 48 respectively. A telescopic rod 49 is sleeved on the periphery of the control spring 50. The fixing pin 48 penetrates through the positioning ring 47 and is connected to the control disk 41. The three arc-shaped wedge blocks 46 enclose to form 270°. The cross-sections of the upper limit block 44 and the lower limit block 45 are both 90°. When the rotating rod 38 rotates clockwise or counterclockwise by 90°, it will respectively cause the upper limit block 44 and the lower limit block 45 to correspond to the gap formed by the arc-shaped wedge block 46 on one side.

[0041] The working principle of the present utility model:

[0042] The circulating fan 15 works, and the air flow enters the air distribution box 16 on both sides of the machine wall through the air duct for air flow distribution. The distribution units are the fluidized bed 18, the primary sorting nozzle device 19 and the secondary sorting nozzle device 17. The inlet end of the circulating fan 15 is connected to the air duct above the fluidized bed 18 to form an internal air flow circulation loop, that is, the internal circulation air flow 21, which is represented by a thick solid arrow in the attached drawing 1;

[0043] The internal circulation air flow 21 is not a closed loop. The inlet end of the circulating fan 15 is connected to the four-way air duct above the fluidized bed 18. The four-way air duct is respectively connected to the air inlet of the circulating fan 15, the air outlet above the fluidized bed 18, the negative pressure system 20 and the air inlet 27, forming an air flow principle of internal and external air flow replacement, effectively solving and improving the problem of the increase in the temperature of the circulating air flow; the negative pressure system 20 is represented by a thin solid arrow in the attached drawing 1;

[0044] The air inlet of the circulating fan 15 consists of three parts: the four-way air duct, the second valve 14 (installed at the inlet connected to the workshop atmosphere), and the cyclone dust collector 28; in addition, it also includes a funnel-shaped channel. A regulating valve is provided in the funnel-shaped channel. The funnel-shaped channel can reduce the flow rate of the air flow at the inlet of the circulating fan, thereby reducing the noise at the inlet. The regulating valve is used to adjust the pressure in the air distribution box 16 and the opening and closing of the inlet;

[0045] The constant temperature and humidity air enters the circulation fan 15 through the second valve 14; the compressed air enters the air distribution box 16 from the outlet of the circulation fan 15, and is then distributed to the primary sorting nozzle device 19, the secondary sorting nozzle device 17 and the fluidized bed 18. The excess compressed air enters the pressure stabilizing chamber; the air flow in the pressure stabilizing chamber enters along with the compressed air of the primary sorting; at the filter screen below the primary sorting nozzle device 19, the air flow enters along with the compressed air of the primary sorting; the pressure of the compressed air for the secondary sorting is the same as that of the air distribution box 16, and the compressed air re-sorts the cut tobacco blown from the primary sorting nozzle device 19 and the cut tobacco coming from the cut tobacco sorting channel; the cut tobacco sorting channel is communicated with the atmosphere, and part of the air flow enters the fluidized bed 18 along with the compressed air for the secondary sorting; the pressure of the compressed air in the fluidized bed 18 is the same as that of the air distribution box 16, and the compressed air cooperates with the weak negative pressure (-0.1 mbar) above the fluidized bed 18 to ensure that the cut tobacco stream 25 smoothly and orderly enters the air chamber 53 along the fluidized bed 18; the cut tobacco stream 25 is attached Figure 1 is indicated by the dotted thin line arrow in the figure.

[0046] All the air entering the fluidized bed 18 is discharged from three directions:

[0047] First, most of the air flow containing soot enters the pipe with an upward opening through the filter screen above the fluidized bed 18, is extracted from the fluidized bed 18, and part of it enters the dust removal system 24 through the air storage tank 23.

[0048] Second, most of the air flow containing soot enters the pipe with an upward opening through the filter screen above the fluidized bed 18, is extracted from the fluidized bed 18, and the other part enters the air inlet of the circulation fan 15 through the cyclone dust collector 28 and becomes the circulating air flow.

[0049] In the first embodiment, according to the fluidized bed cooling requirement, the wind speed value capable of stabilizing the temperature in the fluidized bed is set; the control system collects the wind speed in the air duct through the wind speed sensor and automatically adjusts the valve angle to stabilize the wind speed at the set value; when the pressure in the negative pressure pipe is unstable, the control system automatically adjusts and changes the valve angle through calculation to stabilize the wind speed set value and at the same time stabilize the pressure in the fluidized bed.

[0050] The pressure of the open-loop air flow 52 is detected by the differential pressure sensor 26. The open-loop air flow 52 is represented by a thick dashed arrow in Figure 1 in the attached drawings. The differential pressure sensor 26 feeds back the detected data to the data processing center to obtain the flow rate of the open-loop air flow 52. Affected by the processing progress, the flow rate of the open-loop air flow 52 is constantly changing. The data processing center compares the flow rate of the open-loop air flow 52 with the set range. When the flow rate of the open-loop air flow 52 exceeds the set range, an instruction is sent to the servo motor 61. The servo motor 61 starts and drives the valve stem 63 through the gearbox 62. The rotation of the valve stem 63 drives the rotation of the valve plate 64. The rotation of the valve plate 64 causes the change in the flow rate of the gas passing through the air outlet pipe 30 of the gas storage tank; the differential pressure sensor 26 monitors the flow rate of the open-loop air flow 52 in real time, and controls the valve plate 64 to change the angle through the servo motor 61, so as to keep the air volume, flow rate and temperature of the air-cooling system in dynamic balance.

[0051] In the second embodiment, when the airflow containing soot is in the open-loop airflow 52, its flow rate is automatically controlled by the gas storage tank 23; the gas enters the control chamber 55 from the air inlet pipe 29 of the gas storage tank and flows out from the air outlet pipe 30 of the gas storage tank. During this process, the faster the gas flow rate, the higher the movable plate 37 is lifted. On the contrary, the slower the gas flow rate, the smaller the lifting degree of the movable plate 37. The limiting ring 54 limits the minimum height of the movable plate 37, and the air inlet pipe 29 of the gas storage tank will not be blocked by the movable plate 37;

[0052] The flow rate of the air flow blown out from the air inlet pipe 29 of the gas storage tank is constantly changing. After multiple tests, an ideal flow rate of the air flow blown out from the air inlet pipe 29 of the gas storage tank is obtained. The ideal flow rate corresponds to the ideal temperature of the circulating air flow. The ideal temperature is included in the ideal interval. When the temperature does not exceed the range of this interval, no adjustment is required for the flow rate. When the temperature exceeds the range of the interval, the flow rate is adjusted.

[0053] The flow rate of the air flow blown out from the air inlet pipe 29 of the gas storage tank is constantly changing, resulting in the up and down floating of the movable plate 37. When the movable plate 37 moves, it drives the connecting plate 36 to move together. The mounting plate 33 follows the connecting plate 36 to move together. When the mounting plate 33 moves, the compression degrees of the upper spring 42 and the lower spring 43 are changed. Since the elastic coefficients of the upper spring 42 and the lower spring 43 are exactly the same, after ignoring gravity, the mounting plate 33 has a tendency to stay at the midpoint position of the rotating rod 38, which is the ideal position; this position is the position corresponding to the ideal speed of the air flow blown out from the air inlet pipe 29 of the gas storage tank.

[0054] Within the ideal interval, the mounting plate 33 floats slightly up and down. During this process, the mounting plate 33 cooperates with the thread 51, causing the rotating rod 38 to rotate. The upper limit block 44 and the lower limit block 45 rotate together with the rotating rod 38. However, the rotation amplitude of the rotating rod 38 is not enough to align the upper limit block 44 or the lower limit block 45 with the notch of the arc-shaped wedge block 46. Therefore, the two sliding rods 39 cannot move;

[0055] When in the super-region ideal interval, the floating range of the mounting plate 33 becomes larger, which is divided into two cases. One is that when the flow rate is too slow, the mounting plate 33 moves downward significantly, and the rotating rod 38 rotates significantly. Refer to the attached Figure 5 and the attached Figure 6 . The rotating rod 38 rotates counterclockwise by 90°. At this time, the upper limit block 44 corresponds to the notch of the arc-shaped wedge block 46. Under the action of the upper spring 42, the upper spring 42 forces the arc-shaped wedge block 46 and the positioning ring 47 to quickly pass through the upper limit block 44. During the process of passing through the upper limit block 44, the rotating rod 38 does not rotate. The upper control disk 41, the sliding rod 39, the slider 40, and the positioning ring 47 move synchronously. The slider 40 slides with the chute 35, and the cylinder barrel of the control cylinder 34 in the free state is forced to be pulled out from the piston rod. Since the top of the upper spring 42 moves upward, due to the frictional effect between the upper spring 42 and the lower spring 43, the mounting plate 33 between the two moves upward compared to the ideal position;

[0056] The upward movement of the mounting plate 33 drives the connecting plate 36 and the movable plate 37 to move, increasing the space of the control cavity 55, thereby increasing the flow rate of the gas blown out by the mounting plate 33;

[0057] It takes time for the flow rate of the gas blown out by the mounting plate 33 to change. Through experiments, the maximum time for the flow rate to recover is obtained. When it is detected that the cylinder barrel of the control cylinder 34 has been pulled out for a certain time, it is considered that the flow rate has returned to the ideal interval. When the flow rate returns to the ideal interval, by controlling the control cylinder 34, its piston rod is retracted to the minimum extent and then extended to the length of the initial position. During this process, the two sliding rods 39 approach each other and both move. The upper spring 42 and the lower spring 43 are both further compressed. However, the lower spring 43 will first reach the compression limit, and then the lower sliding rod 39 stops moving, and only the upper sliding rod 39 moves. When they move, the position of the mounting plate 33 changes, causing the rotating rod 38 to rotate. At this time, the notch of the arc-shaped wedge block 46 does not correspond to the upper limit block 44, but the upper limit block 44 contacts the thin side of the arc-shaped wedge block 46. Under the guidance of the arc-shaped wedge block 46, the upper limit block 44 can pass smoothly. When the arc-shaped wedge block 46 passes through the upper limit block 44, the telescopic rod 49 is compressed and the control spring 50 is shortened. After the arc-shaped wedge block 46 passes through the upper limit block 44, the telescopic rod 49 and the control spring 50 are reset. The thick side of the arc-shaped wedge block 46 abuts against the upper limit block 44, and the upper limit block 44 does not correspond to the notch of the arc-shaped wedge block 46, returning to the initial state. At this time, the mounting plate 33 returns to the ideal position.

[0058] In the other case, when the flow rate is too fast, the mounting plate 33 moves upward significantly. The principle is the same as above, and each part of the parts runs reversely.

[0059] In the above-mentioned automatically adjusted dynamic balance process, for a standard interval corresponding to two sliding rods 39, the positions of the sliding rods 39 are the end positions. The mounting plate 33 has a tendency to maintain at the midpoint position of this standard interval, that is, the ideal position. The mounting plate 33 will move within a certain range above and below the ideal position, and this range is the standard range. When the movement amplitude of the mounting plate 33 exceeds the standard range, one of the endpoint values of the standard interval is changed to obtain an adjustment interval. If the upper range limit is exceeded, the lower endpoint of the standard interval is decreased; if the lower range limit is exceeded, the upper endpoint of the standard interval is increased. Under the action of the upper spring 42 and the lower spring 43, the mounting plate 33 will still maintain at the midpoint position of the adjustment interval, and this position is the adjustment position of the mounting plate 33. The adjustment position is different from the ideal position, but the adjustment position still falls within the standard range. After a certain period of time, when it is considered that the flow rate returns to the ideal speed, the control cylinder 34 is used to restore the adjustment interval to the standard interval and the adjustment position to the standard position.

[0060] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "mounting", "connecting", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0061] The above content is only an example and explanation of the structure of the present utility model. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution. As long as it does not deviate from the structure of the utility model or exceed the scope defined by the claims of this application, it shall fall within the protection scope of the present utility model.

Claims

1. An air volume balance control system for a fluidized bed intelligent air cooling system, characterized in that: It includes an internal circulation airflow and an open-loop airflow. By adjusting the flow rate of the open-loop airflow, the temperature of the internal circulation airflow and the stability of the wind pressure in the cooling system are controlled; the open-loop airflow is controlled by a first valve, which includes a valve body, a valve stem is rotatably provided in the valve body, a valve plate is fixed on the valve stem, a servo motor is provided on one side of the valve body, a gearbox is provided on one side of the servo motor, and the servo motor drives the valve stem through the gearbox.

2. The air volume balance control system of the fluidized bed intelligent air cooling system according to claim 1 is characterized in that: It also includes a fuselage, in which a fluidized bed is fixedly arranged, and tobacco shreds enter the fluidized bed from a feed port of the fuselage to form a tobacco shred flow; the servo motor and the gearbox are respectively detachably mounted on the fuselage.

3. The air volume balance control system of the fluidized bed intelligent air cooling system according to claim 2 is characterized in that: A circulation fan is provided on one side of the fluidized bed, and the internal circulation airflow is controlled by the circulation fan.

4. The air volume balance control system of the fluidized bed intelligent air cooling system according to claim 3 is characterized in that: Two forks are arranged on the inner circulation airflow, and an air inlet is fixedly arranged on the fuselage, wherein one of the forks is connected to the air inlet, and the other fork is connected to the outside of the fuselage to form the open-loop airflow.

5. The air volume balance control system of the fluidized bed intelligent air cooling system according to claim 4, characterized in that: The circulating fan is fixedly connected to the fuselage, an air distribution box is arranged between the circulating fan and the fluidized bed, and the air distribution box is fixedly connected to the fuselage.

6. The air volume balance control system of the fluidized bed intelligent air cooling system according to claim 5, characterized in that: The output end of the circulation fan conveys gas to the fluidized bed through the air distribution box, and the gas converges above the fluidized bed and then returns to the input end of the circulation fan.

7. The air volume balance control system of the fluidized bed intelligent air cooling system according to claim 6, characterized in that: A secondary sorting nozzle device and a primary sorting nozzle device are provided on one side of the fluidized bed. The secondary sorting nozzle device and the primary sorting nozzle device are respectively fixedly connected to the fuselage, and the air distribution box is respectively connected to the primary sorting nozzle device, the secondary sorting nozzle device and the fluidized bed.

8. The air volume balance control system of the fluidized bed intelligent air cooling system according to claim 7, characterized in that: It also includes an air tank, on both sides of which an air tank air inlet pipe and an air tank air outlet pipe are fixedly provided, the open-loop airflow enters through the air tank air inlet pipe and flows out through the air tank air outlet pipe; a differential pressure sensor is provided on the air tank air inlet pipe, and the air tank air outlet pipe is connected to a dust removal system outside the system.

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