Flow pattern intelligent control pneumatic conveying device

Abstract

The utility model provides a flow pattern intelligent control pneumatic conveying device. The flow pattern intelligent control pneumatic conveying device comprises an air inlet pipeline, a material sending tank, a conveying pipeline and a plurality of material receiving tanks, the conveying pipeline is provided with a first gas saving device, a second gas saving device, a third gas saving device and a fourth gas saving device; the first throttle device, the second throttle device, the third throttle device and the fourth throttle device are respectively arranged at the starting end of the first horizontal section, the starting end of the second bent section, the starting end of the second vertical section and the starting end of the second horizontal section; and a second gas mass flow meter, a third gas mass flow meter, a fourth gas mass flow meter and a fifth gas mass flow meter are respectively arranged on the first gas saver, the second gas saver, the third gas saver and the fourth gas saver. The device can calculate the conveying gas speed, the critical blocking gas speed and the minimum pressure drop speed in real time according to the flow pattern of a target material, the conveying gas speed in a pipeline is measured and controlled, and the system can achieve real-time control over the material pneumatic conveying flow pattern.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flow type intelligent control pneumatic conveying device. BACKGROUND

[0002] In the prior art, the conveying of powder particles usually adopts two ways of mechanical conveying and pneumatic conveying. Pneumatic conveying has lower mechanical wear and energy consumption compared with mechanical conveying, and therefore is widely used in many industrial applications. According to the movement state of the material in the pipeline, pneumatic conveying can be divided into two types of dense phase conveying and dilute phase conveying, and can be distinguished by the minimum pressure drop speed (critical gas velocity of dilute phase conveying and dense phase conveying). The dense phase pneumatic conveying makes the powder particles move in the pipeline in the form of a deposited layer or a group flow by precisely controlling the gas flow rate in the pipeline. Compared with dilute phase conveying, dense phase conveying has significant advantages in reducing pipeline and particle wear, reducing energy consumption, and improving conveying capacity.

[0003] However, in actual applications, the flow type of the pneumatic conveying of powder particles is affected by many factors such as material property difference, system structure, and operating parameters. When the material properties of the powder particles are greatly different, the applicable flow type will also be different, and even plugging (when the conveying gas velocity is lower than the critical plugging gas velocity) may occur. For example, for powdery materials with poor flowability, the conveying efficiency can be improved by optimizing the design of the flow aid fittings and gas distribution components of the sending tank. Therefore, reasonable selection of the conveying flow type is crucial to ensure the smooth and efficient operation of the pneumatic conveying system, and also helps to avoid pipeline plugging and the operation of powder particles in the dilute phase interval. In view of the important influence of the flow type on the pneumatic conveying of powder particles, the development of a powder particle pneumatic conveying system capable of effectively controlling the flow type has important theoretical and practical significance for the development and automatic operation of the powder particle pneumatic conveying system in industrial applications. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the defects that the prior art is prone to plugging or high energy consumption when conveying materials by pneumatic conveying, the utility model provides a flow type intelligent control pneumatic conveying device. The pneumatic conveying device can calculate the conveying gas velocity, the critical plugging gas velocity and the minimum pressure drop speed in real time according to the flow type of the target material, and measure and control the conveying gas velocity in the pipeline. The system can realize real-time control of the flow type of the material pneumatic conveying. The device of the utility model has important significance for guiding the design of the powder particle pneumatic conveying device in industrial applications and realizing its safe and efficient operation.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] The utility model provides a kind of flow pattern intelligent control pneumatic conveying device, it includes air inlet pipeline, feed tank, conveying pipeline and several receiving tanks;The lower part and bottom of the feed tank are equipped with air inlet, discharge port respectively, the air outlet of the air inlet pipeline is connected with the air inlet of the feed tank, the discharge port of the feed tank is connected with each receiving tank respectively by the conveying pipeline;From the feed tank to each receiving tank direction, the conveying pipeline sequentially includes first vertical section, first bending section, first horizontal section, second bending section, second vertical section, third bending section and second horizontal section;The conveying pipeline is equipped with first throttle, second throttle, third throttle and fourth throttle;The first throttle, the second throttle, the third throttle, the fourth throttle are respectively equipped in the starting end of the first horizontal section, the starting end of the second bending section, the starting end of the second vertical section, the starting end of the second horizontal section;Second gas mass flow meter, third gas mass flow meter, fourth gas mass flow meter, fifth gas mass flow meter are respectively equipped on the first throttle, the second throttle, the third throttle, the fourth throttle;From the feed tank to each receiving tank direction, the first horizontal section is sequentially equipped with third pressure sensor and fourth pressure sensor;The third pressure sensor and the fourth pressure sensor are both equipped between the first throttle and the second throttle;From the feed tank to each receiving tank direction, the second vertical section is sequentially equipped with fifth pressure sensor and sixth pressure sensor.

[0007] In some embodiments, the pneumatic conveying device further comprises a conveying gas treatment module, the conveying gas pre-treatment module comprises a gas compressor, a freeze dryer and an oil remover connected in sequence, and the outlet of the oil remover is connected with the air inlet of the air inlet pipeline.

[0008] In some embodiments, a first pressure sensor, a temperature sensor and a first gas mass flow meter are arranged on the air inlet pipeline, and the first gas mass flow meter is used to adjust the solid conveying amount in the pneumatic conveying process.

[0009] In a specific embodiment, the pneumatic conveying device further comprises a control module, and the control module is electrically connected with the first gas mass flow meter, the second gas mass flow meter, the third gas mass flow meter, the fourth gas mass flow meter, the fifth gas mass flow meter, the first pressure sensor, the third pressure sensor, the fourth pressure sensor, the fifth pressure sensor, the sixth pressure sensor and the temperature sensor.

[0010] In a preferred embodiment, the feed tank is provided with a second pressure sensor.

[0011] In an embodiment, the control module is further electrically connected with the second pressure sensor.

[0012] In some embodiments, the second gas mass flow meter, the third gas mass flow meter, the fourth gas mass flow meter and the fifth gas mass flow meter are respectively used to adjust the conveying gas velocity of the first horizontal section, the conveying gas velocity of the second bending section, the conveying gas velocity of the second vertical section and the conveying gas velocity of the second horizontal section.

[0013] In some embodiments, the bottom of the feeding tank is provided with a weighing system; and the first vertical section is provided with a discharging valve.

[0014] In some embodiments, the pneumatic conveying device further comprises a dust collector and a booster pump connected with each other, the dust collector is arranged at the top of the feeding tank, and the outlet of the booster pump is connected with the inlet of the freeze dryer.

[0015] In specific embodiments, the upper part of each receiving tank is provided with a gas phase outlet connected with the inlet of the dust collector.

[0016] The positive progress effect of the utility model lies in:

[0017] The device can determine the flow pattern based on the particle density and average particle size of the material, can calculate the conveying gas velocity, critical jamming gas velocity and minimum pressure drop velocity in real time, and can measure and control the conveying gas velocity in the pipeline. The system can realize real-time control of the flow pattern of the pneumatic conveying of the powder particles, and effectively improves the efficiency of the pneumatic conveying device of the powder particles. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the control system of the pneumatic conveying of example 1.

[0019] Figure 2 It is a flow pattern prediction diagram based on the particle density and average particle size of the material.

[0020] Figure 3 It is a schematic view of force analysis of the powder particles in the pipeline.

[0021] Figure 4 It is a flow pattern control flowchart of example 2.

[0022] MARK NUMBER EXPLANATION:

[0023] Gas compressor 1

[0024] Freeze dryer 2

[0025] Oil remover 3

[0026] First pressure sensor 401

[0027] Second pressure sensor 402

[0028] Third pressure sensor 403

[0029] Fourth pressure sensor 404

[0030] Fifth pressure sensor 405

[0031] Sixth pressure sensor 406

[0032] Temperature sensor 5

[0033] First gas mass flow meter 601

[0034] Second gas mass flow meter 602

[0035] Third gas mass flow meter 603

[0036] Fourth gas mass flow meter 604

[0037] Fifth gas mass flow meter 605

[0038] Feed tank 7

[0039] Weighing system 8

[0040] Discharge valve 9

[0041] First air throttle 1001

[0042] Second air throttle 1002

[0043] Third air throttle 1003

[0044] Fourth air throttle 1004

[0045] First receiving tank 1101

[0046] Second receiving tank 1102

[0047] Third receiving tank 1103

[0048] Dust collector 12

[0049] Booster pump 13. DETAILED DESCRIPTION

[0050] The preferred embodiments are described below in conjunction with the accompanying drawings.

[0051] Example 1

[0052] The embodiment discloses a flow type intelligent control pneumatic conveying device. The device comprises an air inlet pipeline, a feeding tank 7, a conveying pipeline and three receiving tanks; the lower part and the bottom part of the feeding tank 7 are respectively provided with an air inlet and a material outlet, the air outlet of the air inlet pipeline is connected with the air inlet of the feeding tank 7, and the material outlet of the feeding tank 7 is connected with the first receiving tank 1101, the second receiving tank 1102 and the third receiving tank 1103 through the conveying pipeline; from the feeding tank 7 to each receiving tank, the conveying pipeline comprises a first vertical section, a first bending section, a first horizontal section, a second bending section, a second vertical section, a third bending section and a second horizontal section in sequence.

[0053] The conveying pipeline is provided with a first air throttle 1001, a second air throttle 1002, a third air throttle 1003 and a fourth air throttle 1004; the first air throttle 1001, the second air throttle 1002, the third air throttle 1003 and the fourth air throttle 1004 are respectively arranged at the starting end of the first horizontal section, the starting end of the second bending section, the starting end of the second vertical section and the starting end of the second horizontal section.

[0054] The first air throttle 1001, the second air throttle 1002, the third air throttle 1003 and the fourth air throttle 1004 are respectively provided with a second gas mass flow meter 602, a third gas mass flow meter 603, a fourth gas mass flow meter 604 and a fifth gas mass flow meter 605.

[0055] The pneumatic conveying device further comprises a conveying gas treatment module, and the conveying gas pretreatment module comprises a gas compressor 1, a freeze dryer 2 and an oil remover 3 connected in sequence, and the outlet of the oil remover 3 is connected with the air inlet of the air inlet pipeline.

[0056] The air inlet pipeline is provided with a first pressure sensor 401, a temperature sensor 5 and a first gas mass flow meter 601, and the first gas mass flow meter 601 is used for adjusting the solid conveying amount in the pneumatic conveying process.

[0057] The second gas mass flow meter 602, the third gas mass flow meter 603, the fourth gas mass flow meter 604 and the fifth gas mass flow meter 605 are respectively used for adjusting the conveying gas speed of the first horizontal section, the conveying gas speed of the second bending section, the conveying gas speed of the second vertical section and the conveying gas speed of the second horizontal section.

[0058] The feeding tank 7 is provided with a second pressure sensor 402.

[0059] From the feeding tank 7 to each receiving tank, the first horizontal section is provided with a third pressure sensor 403 and a fourth pressure sensor 404 in sequence; the third pressure sensor 403 and the fourth pressure sensor 404 are arranged between the first air throttle 1001 and the second air throttle 1002.

[0060] The second vertical section is sequentially provided with a fifth pressure sensor 405 and a sixth pressure sensor 406 from the direction of the self-discharge tank 7 to each receiving tank.

[0061] The bottom of the self-discharge tank 7 is provided with a weighing system 8, and the first vertical section is provided with a discharge valve 9.

[0062] The pneumatic conveying device further comprises a dust collector 12 and a booster pump 13 connected to each other, the dust collector 12 is arranged at the top of the self-discharge tank 7, and the outlet of the booster pump 13 is connected to the inlet of the freeze dryer 2.

[0063] The upper part of each receiving tank is provided with a gas phase outlet connected to the inlet of the dust collector 12.

[0064] The pneumatic conveying device further comprises a control module, which is electrically connected to the first gas mass flow meter 601, the second gas mass flow meter 602, the third gas mass flow meter 603, the fourth gas mass flow meter 604, and the fifth gas mass flow meter 605, respectively; and the control module is also electrically connected to the first pressure sensor 401, the second pressure sensor 402, the third pressure sensor 403, the fourth pressure sensor 404, the fifth pressure sensor 405, the sixth pressure sensor 406, and the temperature sensor 5, respectively.

[0065] By using the pneumatic conveying device of the embodiment, the target material is continuously conveyed between different tanks along the conveying pipeline under the carrying of the compressed air provided by the gas compressor. The gas flow in the conveying process is metered and controlled by the gas mass flow meters, and the pressure signal is measured by the pressure sensors.

[0066] Embodiment 2

[0067] The embodiment discloses a control method of pneumatic conveying. Figure 4 The flow pattern control flowchart of the embodiment is shown in FIG. 2.

[0068] The general process of the control method is as follows:

[0069] Firstly, the critical choking velocity, the minimum pressure drop velocity, and the conveying gas velocity are calculated according to the signals of the gas flow meters and the pressure sensors. Then, the target flow pattern is identified according to the average particle size and the particle density of the conveying material in combination with the flow pattern criterion equation. Further, the target gas amount is calculated according to the relative size relationship between the target flow pattern and the conveying gas velocity corresponding to different flow patterns, and the critical choking velocity and the minimum pressure drop velocity. Finally, the real-time control of the pneumatic conveying flow pattern of the powder particles is realized by feeding the target gas amount to the gas flow meters.

[0070] Specifically, the embodiment uses two kinds of powder particles with large differences in physical properties, i.e., powder particle 1 and powder particle 2, as the target material to be conveyed, and the specific physical property parameters are as follows: the density of the conveying particles and the average particle size of the conveying particles of the powder particle 1 are ρ1 and d1, respectively, and the density of the conveying particles and the average particle size of the conveying particles of the powder particle 2 are ρ2 and d2, respectively.p =1586kg / m 3 d p =313μm; the density and average particle size of the conveyed particles of powder 2 are ρ p =2320kg / m 3 d p =18μm.

[0071] Specifically, the control method includes the following steps:

[0072] Step ss1: Based on the average particle size and particle density of the target material, predict the conveying flow pattern of the target material using the flow pattern criterion equation;

[0073] Based on the particle density and average particle size of the two types of powders mentioned above, and in conjunction with the flow pattern criterion equation, the flow patterns of the two types of powders are determined. The flow pattern criterion equation is as follows:

[0074]

[0075] The prediction method for this conveying flow pattern is as follows: Substitute the average particle size and particle density of the target material into the flow pattern criterion equation; when the inequality of Equation IV is satisfied, the conveying flow pattern of the target material is dilute phase conveying; when the inequality of Equation IV is not satisfied, the conveying flow pattern of the target material is dense phase conveying.

[0076] Figure 2 This is a flow pattern prediction diagram based on particle density and average particle size; this diagram corresponds to the flow pattern criterion equation mentioned above. Figure 2 As shown, powder 1 belongs to Class II powder, and its conveying flow pattern is suitable for dilute phase conveying; powder 2 belongs to Class I powder, and its conveying flow pattern is suitable for dense phase conveying.

[0077] This embodiment also discloses a modeling method for pneumatic conveying, which includes establishing a pneumatic conveying model, wherein the pneumatic conveying model includes a minimum pressure drop velocity model;

[0078] The training process of the minimum pressure drop velocity model includes the following steps:

[0079] S1. Obtain at least two sets of fitting data. Each set of fitting data includes the conveying gas velocity U in the conveying pipeline. g and the conveying air velocity U g The corresponding pressure drop ΔP in the delivery pipeline;

[0080] S2. Substitute the fitted data into the minimum pressure drop rate model, which is shown in Equation I:

[0081]

[0082] Among them, Ue is the minimum pressure drop velocity, m / s; U g is the conveying gas velocity, m / s; ΔP is the pressure drop of the conveying pipeline, Pa; L is the length of the conveying pipeline, m; ΔP / L represents the unit length pressure drop of the conveying pipeline, Pa / m;

[0083] In formula I, the calculation method of ΔP / L is as shown in formula II:

[0084]

[0085] wherein, λ g is the friction coefficient of the conveying gas; μ is the solid-gas ratio, that is, the mass flow rate of the particles to the mass flow rate of the conveying gas; λ z is the additional pressure drop coefficient; ρ g is the density of the conveying gas, kg / m 3 ; D is the inner diameter of the conveying pipeline, m; ρ b is the bulk density, kg / m 3 ; g is the acceleration of gravity, m / s 2 ; θ is the inclination angle of the conveying pipeline.

[0086] In formula II, the calculation formula of the friction coefficient λ g of the conveying gas is as follows:

[0087] λ g = 0.3164Re -0.25

[0088] wherein, Re is the Reynolds number;

[0089] In formula II, the calculation formula of the additional pressure drop coefficient λ z is as follows:

[0090] λ z = aFr b

[0091] wherein, Fr is the function of the additional pressure drop coefficient; a and b are fitting coefficients, respectively;

[0092] S3, fitting the fitting coefficients a and b, and training the minimum pressure drop velocity model.

[0093] wherein, the calculation formula of the minimum pressure drop velocity U e is simplified as:

[0094]

[0095] wherein, ρ g is the density of the conveying gas, kg / m 3 ; D is the inner diameter of the conveying pipeline, m; μ gThe dynamic viscosity of the transported gas is Pa·s; g is the acceleration due to gravity, m / s². 2 M s ρ is the solid mass flow rate, kg / s; a and b are fitting parameters;

[0096] The ρ g The ρ is calculated by combining the gas volume, temperature, and pressure in the pipeline; g The formula for calculation is:

[0097]

[0098] The μ g It is 1.79×10 -5 Pa·s; the g is 9.79 m / s 2 The M s Obtained by measurement using a weighing system.

[0099] The pneumatic conveying model also includes a critical blockage gas velocity model; the critical blockage gas velocity model is shown in Equation III:

[0100]

[0101] Among them, C D U is the drag coefficient; b θ is the critical clogging velocity, m / s; θ is the inclination angle of the delivery pipeline; μ g The dynamic viscosity of the conveying gas is given in Pa·s; ρ g The density of the transported gas is kg / m³. 3 ;d p The average particle size of the transported particles is m; g is the acceleration due to gravity, m / s². 2 ;ρ p The density of the conveyed particles, kg / m³ 3 ;

[0102] Critical clogging velocity (U) b The velocity U can be defined as the minimum conveying air velocity in a pneumatic conveying system when the velocity of a particle group in the conveying direction approaches zero. According to the shear law of powder particles, the driving force of a particle in the horizontal direction depends on the force it experiences in the vertical direction. When the forces acting on the particles in the vertical direction are in equilibrium, the velocity of the particles in the horizontal direction is 0, indicating a critical blockage. Therefore, the conveying air velocity U corresponding to the sum of the forces acting on the particles in the vertical direction being 0 is... g That is, the critical clogging velocity U b . Figure 3 This is a schematic diagram illustrating the force analysis of powder particles inside the pipeline. (Example) Figure 3 As shown, the critical blockage velocity U b The calculation model uses the gravity F of the transported particles. GSaffman lift force F L buoyancy force F B drag force F D The equation of motion of the particle is calculated in combination with Newton's second law as follows:

[0103]

[0104] wherein m p is the mass of the conveying particle, kg; F G is the gravity of the conveying particle, N; F B is the buoyancy force of the conveying particle, N; F L is the Saffman lift force of the conveying particle, N; F D is the drag force of the conveying particle, N; is the rate of change of the velocity U p of the conveying particle with respect to time t, U p is the velocity of the conveying particle, m / s; and θ is the inclination angle of the conveying pipeline.

[0105] The gravity F G of the conveying particle is calculated as follows:

[0106]

[0107] wherein π is the circular constant; d p is the average particle size of the conveying particle, m; ρ p is the density of the conveying particle, kg / m 3 ; and g is the acceleration of gravity, m / s 2 ;

[0108] The Saffman lift force F L is calculated as follows:

[0109]

[0110] wherein μ g is the dynamic viscosity of the conveying gas, Pa·s; ρ g is the density of the conveying gas, kg / m 3 ; d p is the average particle size of the conveying particle, m; U g is the velocity of the conveying gas, m / s; U p is the velocity of the conveying particle, m / s; and dU g / dy is the velocity gradient of the conveying gas U g perpendicular to the conveying direction;

[0111] The buoyancy force F B of the conveying particle is calculated as follows:

[0112]

[0113] Where π is the mathematical constant pi; d p The average particle size of the transported particles is given in meters (m); ρ g The density of the transported gas is kg / m³. 3 g is the acceleration due to gravity, m / s² 2 ;

[0114] Traction F D The calculation formula is as follows:

[0115]

[0116] Among them, C D d is the drag coefficient, with a value of 0.44; π is pi; d p The average particle size of the transported particles is given in meters (m); ρ p The density of the conveyed particles, kg / m³ 3 U g U represents the velocity of the transported gas, in m / s; p The velocity of the conveyed particles, in m / s;

[0117] The equation of motion for the particles uses boundary conditions. U p =0.

[0118] The d p The ρ was measured by a particle size analyzer; p The ρ was measured using a particle density meter; g The calculations are based on the pressure and gas temperature of the conveying pipeline; the inner diameter of the conveying pipeline is 0.2m.

[0119] Powder particles 1 and 2 were tested in the pneumatic conveying device of Example 1. Two sets of pneumatic conveying experiments were conducted at different conveying air velocities, based on the minimum pressure drop velocity U... e The calculation formula is obtained by fitting a power function to obtain parameters a and b.

[0120] Based on Equation III and the above equation, the critical blockage velocity U under different operating conditions can be calculated respectively. b and minimum pressure drop rate U e .

[0121] Step ss2: Based on the conveying flow pattern of the target material, and in conjunction with the minimum pressure drop velocity and critical blockage velocity predicted in step ss1, determine the conveying gas velocity range of the target material.

[0122] Specifically, based on the target flow pattern predicted in Example 1, and combined with the delivery gas velocity control method based on the target flow pattern, the corresponding target delivery gas velocity U can be given. tFurthermore, U t Substituting into the following formula, the target gas flow rate Q can be calculated. t .

[0123]

[0124] Finally, the total gas volume entering the system and Q are controlled by a gas flow meter. t The same is true, so as to verify the practicality of this utility model.

[0125] Step ss3: Based on the conveying air velocity range described in step ss2, adjust the conveying air velocity of the target material.

[0126] By measuring different conveyed materials and solid mass flow rates M s The pneumatic conveying experiment yielded the flow pattern control results for powder and granular materials, as shown in Tables 1, 2, and 3. Table 1 corresponds to... Figure 3 The first horizontal segment in Table 1 corresponds to the second bend segment in Table 2, and the second vertical segment in Table 3. The transport flow patterns in Table 1 are obtained based on the transport solid-to-gas ratio and the capacitance tomography system. The transport flow pattern when the solid-to-gas ratio is less than 50 kg / kg is a dilute phase, and vice versa.

[0127] Capacitive tomography can obtain the relative concentration of solid phase in powder particles during transport. When the relative concentration of solid phase is greater than 0.5, the transport flow pattern can be considered as dense phase, and vice versa. Table 1 shows the flow pattern control results for powder particles 1 and 2.

[0128] Table 1

[0129]

[0130] Table 2

[0131]

[0132] Table 3

[0133]

[0134] As shown in Tables 1, 2, and 3, this invention can achieve accurate control of the pneumatic conveying flow pattern of powder particles based on the relative magnitudes of the conveying gas velocity, critical blockage gas velocity, and minimum pressure drop velocity.

Claims

1. A flow pattern intelligent control pneumatic conveying device, characterized in that, It includes air inlet pipeline, feed tank, conveying pipeline and several receiving tanks; the lower part and the bottom of the feed tank are respectively provided with air inlet and discharge outlet, the air outlet of the air inlet pipeline is connected with the air inlet of the feed tank, the discharge outlet of the feed tank is connected with each receiving tank through the conveying pipeline; from the feed tank to each receiving tank, the conveying pipeline sequentially includes first vertical section, first bending section, first horizontal section, second bending section, second vertical section, third bending section and second horizontal section; The conveying pipeline is provided with first throttle, second throttle, third throttle and fourth throttle; the first throttle, the second throttle, the third throttle and the fourth throttle are respectively arranged at the starting end of the first horizontal section, the starting end of the second bending section, the starting end of the second vertical section and the starting end of the second horizontal section; The first throttle, the second throttle, the third throttle and the fourth throttle are respectively provided with second gas mass flow meter, third gas mass flow meter, fourth gas mass flow meter and fifth gas mass flow meter; From the feed tank to each receiving tank, the first horizontal section is sequentially provided with third pressure sensor and fourth pressure sensor; the third pressure sensor and the fourth pressure sensor are both arranged between the first throttle and the second throttle; From the feed tank to each receiving tank, the second vertical section is sequentially provided with fifth pressure sensor and sixth pressure sensor.

2. The flow regime smart pneumatic conveying device of claim 1, wherein, The pneumatic conveying device further comprises conveying gas treatment module, the conveying gas treatment module comprises gas compressor, freeze dryer and oil remover which are connected in sequence, and the outlet of the oil remover is connected with the air inlet of the air inlet pipeline.

3. The flow regime smart pneumatic conveying device of claim 1, wherein, The air inlet pipeline is provided with first pressure sensor, temperature sensor and first gas mass flow meter, and the first gas mass flow meter is used for adjusting the solid conveying amount in the pneumatic conveying process.

4. The flow regime smart pneumatic conveying device of claim 3, wherein, The pneumatic conveying device further comprises control module, and the control module is electrically connected with the first gas mass flow meter, the second gas mass flow meter, the third gas mass flow meter, the fourth gas mass flow meter, the fifth gas mass flow meter, the first pressure sensor, the third pressure sensor, the fourth pressure sensor, the fifth pressure sensor, the sixth pressure sensor and the temperature sensor.

5. The flow regime smart pneumatic conveying device of claim 4, wherein, The feed tank is provided with second pressure sensor.

6. The flow regime smart pneumatic conveying device of claim 5, wherein, The control module is further electrically connected with the second pressure sensor.

7. The flow-based smart pneumatic conveying device of claim 1, wherein, The second gas mass flow meter, the third gas mass flow meter, the fourth gas mass flow meter and the fifth gas mass flow meter are respectively used for adjusting the conveying gas speed of the first horizontal section, the conveying gas speed of the second bending section, the conveying gas speed of the second vertical section and the conveying gas speed of the second horizontal section.

8. The flow regime smart pneumatic conveying device of claim 1, wherein, The bottom of the feed tank is provided with weighing system; The first vertical section is provided with discharging valve.

9. The flow-type smart pneumatic conveying apparatus according to claim 2, wherein The pneumatic conveying device further comprises dust collector and booster pump which are connected with each other, the dust collector is arranged at the top of the feed tank, and the outlet of the booster pump is connected with the inlet of the freeze dryer.

10. The flow regime smart pneumatic conveying device of claim 9, wherein, The upper part of each said receiving tank is provided with a gas phase outlet, which is connected with the inlet of said dust collector.

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