A material conveying device, an airflow mill device and a control method of the material conveying device

Abstract

The application relates to a material conveying device, an airflow mill device and a control method of the material conveying device. The material conveying device comprises a first flange and a second flange, the second flange is provided with an exhaust port; a first control valve is arranged on the first flange, and the first control valve is used for controlling whether material passes through the first flange; a material conveying pipe is connected to the first flange at one end, and the other end of the material conveying pipe is connected to the second flange; the first flange, the material conveying pipe and the second flange form a material conveying channel; a flange connecting mechanism is connected to the first flange at one end, and the other end of the flange connecting mechanism is connected to the second flange; an air exchange mechanism is used for introducing gas into the material conveying channel; a locking mechanism is used for connecting a material tank to the second flange; and an exhaust valve is used for controlling the opening and closing of the exhaust port. The material conveying device can automatically feed or discharge material, can blow and wash a tank opening, can detect the oxygen content in the material conveying channel, can treat waste gas, saves labor and improves the safety of the airflow mill device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of jet mill equipment, in particular to a material conveying device, a jet mill equipment and a control method of the material conveying device. BACKGROUND

[0002] The jet mill is a commonly used equipment for producing powder. The current jet mill equipment needs manual operation when feeding and discharging, which is labor-intensive and high in labor cost. The feeding and discharging operation is entirely dependent on the experience of manual operation, and there is a possibility of misoperation. If dust leakage occurs, not only environmental pollution will be caused, but also a combustion and explosion accident may occur. SUMMARY

[0003] Based on the above problems, the present application provides a material conveying device, a jet mill equipment and a control method of the material conveying device, which can realize automatic feeding and discharging of the jet mill.

[0004] One embodiment of the present application provides a material conveying device, comprising: a first flange and a second flange, the second flange being provided with an exhaust port; a first control valve provided on the first flange, the first control valve being used for controlling whether material passes through the first flange; a material conveying pipe, one end of the material conveying pipe being connected to the first flange, the other end of the material conveying pipe being connected to the second flange, the first flange, the material conveying pipe and the second flange forming a material conveying channel; a flange connecting mechanism, one end of the flange connecting mechanism being connected to the first flange, the other end of the flange connecting mechanism being connected to the second flange; a gas exchange mechanism used for introducing gas into the material conveying channel; a locking mechanism used for connecting a material tank to the second flange; and an exhaust valve used for controlling opening and closing of the exhaust port.

[0005] According to some embodiments of the present application, an annular groove is arranged on the outer wall of the material conveying pipe, and a metal ring is arranged in the annular groove.

[0006] According to some embodiments of the present application, the flange connecting mechanism comprises: an elastic member arranged between the first flange and the second flange, the elastic member being capable of pushing the second flange to move away from the first flange; and a chain, one end of the chain being connected to the first flange, the other end of the chain being connected to the second flange.

[0007] According to some embodiments of the present application, the gas exchange mechanism comprises: a first nozzle arranged on the first flange; and a second nozzle arranged on the second flange.

[0008] According to some embodiments of the present application, the locking mechanism comprises: a clasp, the clasp being rotatable relative to the second flange; and a driver arranged on the second flange, the driver driving the clasp to rotate.

[0009] According to some embodiments of the present application, the locking mechanism further comprises a position sensor configured to detect the position of the tank relative to the second flange; and a positioning structure disposed on the second flange, the positioning structure configured to position the tank when the tank is connected to the second flange.

[0010] One embodiment of the present application provides a jet mill device, comprising the material conveying device as described above, wherein the material conveying device is disposed at a material inlet of the jet mill device.

[0011] According to some embodiments of the present application, the jet mill device further comprises a waste gas treatment tank connected to the exhaust valve.

[0012] According to some embodiments of the present application, the waste gas treatment tank comprises a tank body provided with a liquid outlet and a liquid inlet; a waste gas pipe extending into the tank body; a clean gas pipe extending into a first filter barrel disposed in the tank body, wherein the waste gas pipe is located in the first filter barrel; a second filter barrel disposed in the tank body, wherein the clean gas pipe is located in the second filter barrel; and a circulating pump connected to the liquid outlet and the liquid inlet, respectively, and configured to circulate liquid in the tank body.

[0013] According to some embodiments of the present application, the waste gas treatment tank further comprises a first liquid distribution disc disposed between the waste gas pipe and the first filter barrel, the first liquid distribution disc being configured to guide liquid from the first filter barrel to the waste gas pipe; and a second liquid distribution disc disposed between the clean gas pipe and the second filter barrel, the second liquid distribution disc being configured to guide liquid from the second filter barrel to the clean gas pipe.

[0014] One embodiment of the present application provides a control method of a material conveying device, comprising: connecting the tank to the second flange by the locking mechanism; opening the gas exchange mechanism to supply gas to the material conveying passage, wherein the oxygen content in the material conveying passage is reduced to a preset value, and the gas exchange mechanism stops supplying gas; opening the tank valve of the tank to detect whether the oxygen content in the tank is lower than the preset value; if not, opening the gas exchange mechanism to reduce the oxygen content in the tank to the preset value, and the gas exchange mechanism stops supplying gas; opening the first control valve to load material; closing the tank valve after the tank is filled with material, opening the gas exchange mechanism, closing the first control valve, and the gas exchange mechanism stops supplying gas; and opening the locking mechanism to disconnect the tank from the second flange.

[0015] One embodiment of the present application provides a control method of a material conveying device, comprising: connecting the material tank to the second flange through the locking mechanism; opening the air exchange mechanism to supply air to the material conveying channel, the oxygen content in the material conveying channel being reduced to a preset value, and the air exchange mechanism stopping air supply; opening the tank valve of the material tank and opening the first control valve to discharge material; closing the tank valve after the material tank discharges all the material, opening the air exchange mechanism, and closing the first control valve to purge the material conveying channel, and stopping air supply of the air exchange mechanism after the purging is completed; and opening the locking mechanism, and separating the material tank from the second flange. The material conveying device of the present application can realize automatic feeding and discharging of the jet mill, eliminate the risk of manual operation, improve the working environment, and avoid the occurrence of combustion and explosion accidents. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to these drawings without departing from the scope of the present application.

[0017] Figure 1 is a schematic diagram of a jet mill device of an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of a conveying device of an embodiment of the present application;

[0019] Figure 3 is an exploded view of the conveying device of an embodiment of the present application;

[0020] Figure 4 is a schematic diagram of a first flange, a material conveying pipe and a second flange of an embodiment of the present application;

[0021] Figure 5 is a partial enlarged view of the material conveying pipe of an embodiment of the present application;

[0022] Figure 6 is a schematic diagram of a metal ring of an embodiment of the present application;

[0023] Figure 7 is a front view of the material conveying device of an embodiment of the present application;

[0024] Figure 8 is an A-A sectional view of the material conveying device of an embodiment of the present application;

[0025] Figure 9 is a side view of the material conveying device of an embodiment of the present application;

[0026] Figure 10 is a B-B sectional view of the material conveying device of an embodiment of the present application;

[0027] Figure 11 FIG. 1 is a schematic diagram of a locking mechanism according to an embodiment of the present application;

[0028] Figure 12 FIG. 2 is a schematic diagram of a hook connecting driver according to an embodiment of the present application;

[0029] Figure 13 FIG. 3 is a schematic diagram of a position sensor and positioning structure according to an embodiment of the present application;

[0030] Figure 14 FIG. 4 is a schematic diagram of an exhaust treatment tank according to an embodiment of the present application;

[0031] Figure 15 FIG. 5 is a schematic diagram of an internal structure of an exhaust treatment tank according to an embodiment of the present application;

[0032] Figure 16 FIG. 6 is a schematic diagram of a liquid distribution tray according to an embodiment of the present application;

[0033] Figure 17 FIG. 7 is a flow chart of a control method of a material conveying device according to an embodiment of the present application. DETAILED DESCRIPTION

[0034] The technical solutions of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] The existing airflow mill equipment adopts manual operation when feeding and discharging. Manual operation not only has high labor intensity, but also has the following shortcomings:

[0036] 1. Manual operation, which is prone to dust leakage and has the risk of combustion and explosion;

[0037] 2. Oxygen content at the interface with the material tank is determined by experience;

[0038] 3. Gas is manually replaced by experience;

[0039] 4. There is a risk of flammability and explosion in manually cleaning the pollution of the material port with gas, and the pollution gas cleaned cannot be collected, polluting the environment;

[0040] 5. The material tank needs to be manually clamped and fixed;

[0041] 6. If the operation sequence is wrong, it will cause material scrap and different degrees of damage to the airflow mill equipment.

[0042] REFERENCE Figure 1Embodiments of the present application provide an air flow mill device 200, the material inlet of the air flow mill device 200 comprises a feeding inlet 210 and a discharging outlet 220. The air flow mill device 200 can process raw materials with large particle size into powder with small particle size. The raw materials enter the air flow mill device 200 through the feeding inlet 210, and the powder is discharged from the discharging outlet 220 after being processed by the air flow mill device 200.

[0043] In the embodiments, the feeding inlet 210 and the discharging outlet 220 of the air flow mill device 200 are both provided with a material conveying device 100, and the material conveying device 100 is used to connect a material tank 400. The tank opening of the material tank 400 is provided with a tank valve to control the opening and closing of the tank opening.

[0044] In an implementation, when feeding, a lifting appliance 300 is used to clamp the material tank 400 containing raw materials, the lifting appliance 300 moves the material tank 400 to above the feeding inlet 210, and after the material tank 400 contacts the material conveying device 100 at the feeding inlet 210, the material conveying device 100 can be automatically connected with the material tank 400.

[0045] When discharging, a lifting device 500 is used to lift the material tank 400 to contact the material conveying device 100 of the discharging outlet 220, and the material conveying device 100 can be automatically connected with the material tank 400.

[0046] Reference Figure 2 and Figure 3 Embodiments of the present application provide a material conveying device 100, which comprises a first flange 1, a second flange 2, a first control valve 3, a material conveying pipe 4, a flange connecting mechanism 5, an air exchange mechanism 6, a locking mechanism 7 and an exhaust valve 8. The material conveying device 100 can be automatically connected with the material tank 400 and can automatically exchange air, thereby improving the efficiency and safety of feeding and discharging of the air flow mill device 200.

[0047] Reference Figure 4 The first flange 1, the material conveying pipe 4 and the second flange 2 are coaxially arranged. The first flange 1 has a first through hole 11, the second flange 2 has a second through hole 21, and the material conveying pipe 4 has a third through hole 41. One end of the material conveying pipe 4 is connected with the first flange 1, and the other end of the material conveying pipe 4 is connected with the second flange 2. One end of the third through hole 41 communicates with the first through hole 11, and the other end of the third through hole 41 communicates with the second through hole 21. The first flange 1, the second flange 2 and the material conveying pipe 4 form a material conveying channel for conveying powder.

[0048] Optionally, the material conveying pipe 4 is connected with the first flange 1 through a first clamp 44, and the material conveying pipe 4 is connected with the second flange 2 through a second clamp 45.

[0049] The first flange 1 is used to connect the material outlet of the jet mill device 200, for example, the first flange 1 is fastened to the material outlet of the jet mill device 200 by the screw 12. The second flange 2 is used to connect the material tank 400. Optionally, the material conveying pipe 4 is a rubber pipe to achieve flexible connection between the second flange 2 and the material tank 400.

[0050] The first control valve 3 is arranged on the end face of the first flange 1 close to the material outlet, and is used to control the opening and closing of the first flange 1 to control whether the material passes through the material conveying passage. Optionally, the first control valve 3 is a butterfly valve. When the first control valve 3 is opened, the jet mill device 200 discharges material, and when the first control valve 3 is closed, the jet mill device 200 stops discharging material.

[0051] The flange connection mechanism 5 is used to connect the first flange 1 and the second flange 2. Optionally, the flange connection mechanism 5 is arranged on the outer side of the material conveying pipe 4, one end of the flange connection mechanism 5 is connected to the first flange 1, and the other end of the flange connection mechanism 5 is connected to the second flange 2, and the flange connection mechanism 5 plays a role of suspending or supporting the second flange 2. For example, when the material conveying device 100 is arranged on the material outlet 220, the flange connection mechanism 5 plays a role of suspending the second flange 2.

[0052] The gas exchange mechanism 6 is used to introduce gas into the material conveying passage to exchange the gas in the material conveying passage and to blow the tank opening of the material tank 400. Optionally, a first gas inlet 13 is arranged on the side wall of the first flange 1, and a second gas inlet 22 and an exhaust port 23 are arranged on the side wall of the second flange 2. The gas exchange mechanism 6 communicates the first gas inlet 13 and the second gas inlet 22 to introduce gas into the material conveying passage. The gas in the material conveying passage is discharged through the exhaust port 23.

[0053] The locking mechanism 7 is used to connect the material tank 400 to the second flange 2. For example, during discharging, the locking mechanism 7 locks the material tank 400 to the second flange 2, and after the material tank 400 is filled, the locking mechanism 7 is unlocked, and the material tank 400 is separated from the second flange 2.

[0054] The exhaust valve 8 is arranged on the second flange 2, and the exhaust valve 8 communicates with the exhaust port 23 to control the opening and closing of the exhaust port 23. Optionally, the exhaust valve 8 is connected to an oxygen content detector.

[0055] Taking the jet mill device 200 for discharging as an example, the operation process of the material conveying device 100 includes:

[0056] The lifting device 500 lifts the material tank 400 to contact the second flange 2, and the locking mechanism 7 locks the material tank 400 to the second flange 2;

[0057] The gas exchange mechanism 6 is opened, and gas is introduced into the material conveying channel. Optionally, the introduced gas is nitrogen. The exhaust valve 8 is opened, and the oxygen content of the exhaust gas is detected by the oxygen content detector. If the oxygen content of the exhaust gas is lower than the preset value, the gas exchange mechanism 6 is closed.

[0058] The tank valve of the material tank 400 is opened, and the oxygen content in the material tank 400 is detected by the oxygen content detector. If the oxygen content is reduced to the preset value, the exhaust valve 8 is closed. If not, the gas exchange mechanism 6 is opened to reduce the oxygen content in the material tank 400 to the preset value. The gas exchange mechanism 6 stops gas supply, and the exhaust valve 8 is closed.

[0059] The first control valve 3 is opened for discharging material.

[0060] After the material tank 400 is filled with material, the tank valve is closed, the gas exchange mechanism 6 is opened, the exhaust valve 8 is opened, and the first control valve 3 is closed. The gas exchange mechanism 6 stops gas supply, and the exhaust valve 8 is closed.

[0061] The locking mechanism 7 is opened, and the material tank 400 is separated from the second flange 2. The lifting device 500 lowers the material tank 400.

[0062] The material conveying device 100 of the present application can realize automatic connection of the material tank 400 and the second flange 2, automatic gas exchange, automatic detection of the oxygen content of the gas, and automatic feeding and discharging of the airflow mill equipment 200.

[0063] Reference Figure 5 and Figure 6 In some embodiments, an annular groove 42 is arranged on the outer wall of the material conveying pipe 4. Optionally, a plurality of annular grooves 42 are arranged in sequence along the axis of the material conveying pipe 4. A metal ring 43, for example, a steel wire ring, is arranged in each annular groove 42. Arranging the metal ring 43 on the outer wall of the material conveying pipe 4 can improve the pressure resistance of the material conveying pipe 4.

[0064] Reference Figure 3 The flange connection mechanism 5 includes an elastic member 51 and a chain 52. Optionally, the elastic member 51 is a compression spring. One end of the elastic member 51 is connected to the first flange 1, and the other end of the elastic member 51 is connected to the second flange 2. The elastic member 51 can push the second flange 2 to move away from the first flange 1. One end of the chain 52 is connected to the first flange 1, and the other end of the chain 52 is connected to the second flange 2. The chain 52 can limit the stroke of the second flange 2 moving away from the first flange 1, avoiding pulling the material conveying pipe 4.

[0065] When the material tank 400 is connected to the second flange 2, the rising material tank 400 may impact the second flange 2. The elastic member 51 can buffer the impact, avoiding damage to the second flange 2 and realizing flexible connection of the material tank 400 and the second flange 2.

[0066] Optionally, the number of elastic members 51 and chains 52 is multiple, and the chains 52 are located in the elastic members 51 to save the space occupied by the flange connection mechanism 5.

[0067] With reference to Figure 7 , Figure 8 , Figure 9 and Figure 10 , the gas exchange mechanism 6 comprises a first nozzle 61 and a second nozzle 62. The first nozzle 61 is arranged at the first air inlet 13 of the first flange 1, and the second nozzle 62 is arranged at the second air inlet 22 of the second flange 2. The first nozzle 61 and the second nozzle 62 are used to introduce protective gas into the material conveying channel.

[0068] Optionally, the number of first nozzles 61 and second nozzles 62 is two, and the two first nozzles 61 are spaced apart by 180°, and the two second nozzles 62 are spaced apart by 180°. The first nozzles 61 and the second nozzles 62 are tangential nozzles, the flow direction of the gas sprayed by the first nozzles 61 is tangent to the circumference of the first flange 1, and the flow direction of the gas sprayed by the second nozzles 62 is tangent to the circumference of the second flange 2, so as to form a high-speed spiral gas flow in the material conveying channel, facilitating the purging of the material conveying channel.

[0069] Optionally, the gas exchange mechanism 6 further comprises a gas distribution block 63 and a gas distribution pipe 64. Each first nozzle 61 and second nozzle 62 is connected with a gas distribution block 63, and the gas distribution blocks 63 are communicated with each other through the gas distribution pipe 64. At least one gas distribution block 63 is connected with a gas source to provide protective gas for the first nozzles 61 and the second nozzles 62.

[0070] With reference to Figure 11 and Figure 12 , in some embodiments, the locking mechanism 7 comprises a clasp 71 and a driver 72. Optionally, the driver 72 is a hydraulic cylinder, and the driver 72 comprises a cylinder body 721 and a telescopic rod 722, and the telescopic rod 722 is slidable in the cylinder body 721.

[0071] The clasp 71 is rotatable relative to the second flange 2, and the clasp 71 is located below the second flange 2 to lock or unlock the connection between the tank 400 and the second flange 2.

[0072] The cylinder body 721 of the driver 72 is arranged on the second flange 2 through the support block 24. One end of the hinged block 76 is hinged to the cylinder body 721, and the other end of the hinged block 76 is hinged to the clasp 71. The end of the clasp 71 away from the hinged block 76 is hinged to the telescopic rod 722, and the telescopic movement of the telescopic rod 722 can drive the clasp 71 to rotate.

[0073] Optionally, two drivers 72 are symmetrically arranged on the second flange 2, and each driver 72 is connected with a clasp 71. A hydraulic pipe 73 is arranged between the two drivers 72, and the hydraulic pipe 73 is connected with a hydraulic oil station to provide power for the driver 72.

[0074] With reference to Figure 13 In some embodiments, the locking mechanism further comprises a position sensor 74 and a positioning structure 75.

[0075] The position sensor 74 is used to detect the position of the tank 400 relative to the second flange 2. In the present embodiment, the position sensor 74 is a proximity switch, and when the tank 400 contacts the second flange 2, the position sensor 74 sends a signal to control the driver 72 to work and lock the tank 400 and the second flange 2.

[0076] The positioning structure 75 is arranged on the second flange 2, and the positioning structure 75 is used to position the tank 400 when the tank 400 is connected to the second flange 2. For example, the positioning structure 75 is a positioning pin, and the tank 400 is provided with a positioning hole matched with the positioning pin, thereby improving the accuracy of repeated connection of the tank 400 and the second flange 2.

[0077] Optionally, a sealing ring is arranged on the end surface of the second flange 2 close to the tank 400, and the sealing ring is used for sealing when the tank 400 is connected to the second flange 2.

[0078] In the present embodiment, each electrical element such as the valve body, the driver, and the sensor is electrically connected with a controller of the jet mill device 200, and the controller can control the electrical elements to work.

[0079] With reference to Figure 1 In some embodiments, the jet mill device 200 further comprises a waste gas treatment tank 600 connected with the exhaust valve 8. The exhaust gas discharged from the exhaust valve 8 may contain dust, and if the exhaust gas is directly discharged into the air, not only will it cause environmental pollution, but also may cause a combustion and explosion accident. The exhaust gas is introduced into the waste gas treatment tank 600 for treatment to discharge clean gas.

[0080] With reference to Figure 14 And Figure 15 In some embodiments, the waste gas treatment tank 600 comprises a tank body 610, a waste gas pipe 620, a clean gas pipe 630, a first filter barrel 640, a second filter barrel 650, and a circulating pump 660.

[0081] The tank body 610 has a closed cavity inside. The tank body 610 contains liquid, such as filtered oil. The exhaust pipe 620 is arranged on the top cover of the tank body 610. The exhaust pipe 620 is connected to the exhaust valve 8. The exhaust pipe 620 extends into the cavity of the tank body 610. The exhaust gas discharged by the exhaust valve 8 enters the tank body 610 through the exhaust pipe 620. The clean gas pipe 630 is arranged on the top cover of the tank body 610. The clean gas pipe 630 extends into the cavity of the tank body 610. The clean gas discharged by the clean gas pipe 630 is treated.

[0082] The first filter barrel 640 and the second filter barrel 650 are arranged in the cavity of the tank body 610. The exhaust pipe 620 extends into the first filter barrel 640. The clean gas pipe 630 extends into the second filter barrel 650. Optionally, the first filter barrel 640 and the second filter barrel 650 are both made of filter mesh material.

[0083] The bottom end of the tank body 610 is provided with a liquid outlet 611. The top end of the tank body 610 is provided with a liquid inlet 612. The circulating pump 660 is connected to the liquid outlet 611 and the liquid inlet 612 respectively, for circulating the liquid in the tank body 610.

[0084] The circulating pump 660 sprays the liquid from the liquid inlet 612 onto the first filter barrel 640 and the second filter barrel 650. The sprayed liquid gradually flows downward on the first filter barrel 640 and the second filter barrel 650 to the bottom of the tank body 610. The exhaust gas enters the tank body 610 through the exhaust pipe 620. The exhaust gas passes through the first filter barrel 640 and the second filter barrel 650 in sequence. The liquid on the first filter barrel 640 and the second filter barrel 650 purifies the exhaust gas and removes the dust in the exhaust gas, obtaining clean gas. The clean gas is discharged by the clean gas pipe 630.

[0085] Optionally, a liquid level instrument 670 is arranged in the tank body 610 to detect the liquid surface position of the liquid in the tank body 610.

[0086] Reference Figure 16 In some embodiments, the exhaust gas treatment tank 600 further comprises a first liquid distribution disc 680 and a second liquid distribution disc 690. The first liquid distribution disc 680 is arranged between the exhaust pipe 620 and the first filter barrel 640. The second liquid distribution disc 690 is arranged between the clean gas pipe 630 and the second filter barrel 650.

[0087] The first liquid distribution tray 680 and the second liquid distribution tray 690 have the same structure. The liquid in the liquid inlet 612 is respectively delivered to the first liquid distribution tray 680 and the second liquid distribution tray 690 by the liquid distributor. The upper surface of the first liquid distribution tray 680 is downwardly inclined from the exhaust pipe 620 to the inner wall of the first filter barrel 640, so that the liquid flows down uniformly around the first filter barrel 640, and the first liquid distribution tray 680 plays a role of liquid distribution. The lower surface of the first liquid distribution tray 680 is downwardly inclined from the inner wall of the first filter barrel 640 to the exhaust pipe 620, and part of the liquid on the first filter barrel 640 is guided to the exhaust pipe 620, so that part of the liquid flows down from the exhaust pipe 620, and the first liquid distribution tray 680 plays a role of liquid guiding. Guiding the liquid to the exhaust pipe 620 can avoid the dust in the exhaust gas from adhering to the exhaust pipe 620, and improve the filtering effect and safety of the exhaust gas. The second liquid distribution tray 690 is the same as the first liquid distribution tray 680, and the second liquid distribution tray 690 also plays a role of liquid distribution and liquid guiding.

[0088] Optionally, the oxygen content detector 700 is arranged on the exhaust gas treatment tank 600. For example, the oxygen content detector 700 is arranged at the gas outlet of the clean gas pipe 630, and the oxygen content detector 700 communicates with the clean gas pipe 630, so as to facilitate the oxygen content detector 700 to detect the oxygen content in the gas, and meanwhile, the structure of the jet mill equipment 200 can be simplified.

[0089] Reference Figure 17 The embodiment of the present application also provides a control method of the above-mentioned material conveying device 100, which is used for discharging material from the jet mill equipment 200, and the control method comprises the following steps:

[0090] Gas detection and replacement at the connection position:

[0091] 1. The lifting device 500 lifts the material tank 400 to contact the second flange 2, and the locking mechanism 7 locks the material tank 400 on the second flange 2.

[0092] For example, when the position sensor 74 detects that the material tank 400 contacts the second flange 2, the position sensor 74 sends a signal, and the controller controls the driver 72 to work according to the signal of the position sensor 74, so that the clamping hook 71 locks the material tank 400 and the second flange 2.

[0093] 2. The gas replacement mechanism 6 is opened, the first nozzle 61 and the second nozzle 62 introduce protective gas into the material conveying channel, and the introduced gas is nitrogen gas, the exhaust valve 8 is opened, the oxygen content of the exhaust gas of the material conveying device 100 is detected by the oxygen content detector, and after the oxygen content of the exhaust gas is lower than a preset value, the gas replacement mechanism 6 is closed.

[0094] Gas detection and replacement at the material tank:

[0095] 3, open the tank valve of the material tank 400, detect the oxygen content in the material tank 400 by the oxygen content detector, if the oxygen content is lower than the preset value, close the exhaust valve 8, if not, open the gas exchange mechanism 6, and when the oxygen content in the material tank 400 is reduced to the preset value, stop the gas exchange mechanism 6, and close the exhaust valve 8.

[0096] 4, open the first control valve 3 to discharge the material.

[0097] After the material is filled, the material tank 400 is closed, the gas exchange mechanism 6 is opened, the exhaust valve 8 is opened, and the first control valve 3 is closed to blow the material conveying channel, and after the blowing is completed, the gas exchange mechanism 6 stops the gas conveying, and the exhaust valve 8 is closed.

[0098] 5, after the material tank 400 is filled with material, the tank valve is closed, the gas exchange mechanism 6 is opened, the exhaust valve 8 is opened, and the first control valve 3 is closed to blow the material conveying channel, and after the blowing is completed, the gas exchange mechanism 6 stops the gas conveying, and the exhaust valve 8 is closed.

[0099] 6, open the locking mechanism 7, the material tank 400 is separated from the second flange 2, and the lifting device 500 lowers the material tank 400.

[0100] The embodiment of the application also provides a control method of the above-mentioned material conveying device 100, which is used for feeding the airflow mill equipment 200, and comprises the following steps:

[0101] 1, the lifting device 500 raises the material tank 400 to contact the second flange 2, and the locking mechanism 7 locks the material tank 400 on the second flange 2.

[0102] 2, open the gas exchange mechanism 6, the first nozzle 61 and the second nozzle 62 introduce protective gas into the material conveying channel, and the gas is nitrogen, open the exhaust valve 8, detect the oxygen content of the exhaust gas of the material conveying device 100 by the oxygen content detector, and after the oxygen content of the exhaust gas is lower than the preset value, close the gas exchange mechanism 6.

[0103] 3, open the tank valve of the material tank 400, open the first control valve 3 to discharge the material.

[0104] 4, after the material tank 400 discharges the material, the tank valve is closed, the gas exchange mechanism 6 is opened, the exhaust valve 8 is opened, and the first control valve 3 is closed to blow the material conveying channel, and after the blowing is completed, the gas exchange mechanism 6 stops the gas conveying, and the exhaust valve 8 is closed.

[0105] 5, open the locking mechanism 7, the material tank 400 is separated from the second flange 2, and the lifting device 500 lowers the material tank 400.

[0106] The above has carried out the detailed introduction to the embodiment of the application. The principle and implementation mode of the application are described by applying specific examples in this paper, and the above embodiment is only used to help understand the technical scheme of the application and its core idea. Therefore, the changes or deformations made by the person skilled in the art on the basis of the specific implementation mode and the application range of the application all belong to the protection range of the application. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A material conveying device, characterized in that, The utility model relates to a material conveying device and a control method thereof, and belongs to the field of material conveying device. It comprises: a first flange and a second flange, the first flange is provided with a first gas inlet, and the second flange is provided with a second gas inlet and an exhaust outlet; a first control valve arranged on the first flange, the first control valve is used for controlling whether the material passes through the first flange; a material conveying pipe, one end of the material conveying pipe is connected to the first flange, the other end of the material conveying pipe is connected to the second flange, and the first flange, the material conveying pipe and the second flange form a material conveying channel; an annular groove is arranged on the outer wall of the material conveying pipe, and a metal ring is arranged in the annular groove; a flange connecting mechanism, one end of the flange connecting mechanism is connected to the first flange, and the other end of the flange connecting mechanism is connected to the second flange; a gas exchange mechanism, which is used for introducing gas into the material conveying channel to exchange the material conveying channel and blow the tank opening of the material tank, the gas exchange mechanism comprises: a first nozzle arranged at the first gas inlet of the first flange; a second nozzle arranged at the second gas inlet of the second flange, the flow direction of the gas sprayed by the first nozzle is tangent to the circumference of the first flange, and the flow direction of the gas sprayed by the second nozzle is tangent to the circumference of the second flange, so as to form a spiral gas flow in the material conveying channel; a locking mechanism, which is used for connecting the material tank to the second flange; 2. The material conveying apparatus of claim 1, wherein an exhaust valve, which is used for controlling the opening and closing of the exhaust outlet. The flange connecting mechanism comprises: a resilient member arranged between the first flange and the second flange, the resilient member can push the second flange to move away from the first flange; 3. The material delivery apparatus of claim 1, wherein a chain, one end of the chain is connected to the first flange, and the other end of the chain is connected to the second flange. The locking mechanism comprises: a hook, which is rotatable relative to the second flange; 4. The material delivery apparatus of claim 3, wherein, a driver arranged on the second flange, the driver drives the hook to rotate. The locking mechanism further comprises: a position sensor, which is used for detecting the position of the material tank relative to the second flange; 5. An air jet mill apparatus, characterized by, a positioning structure arranged on the second flange, the positioning structure is used for positioning when the material tank is connected to the second flange. It comprises:

6. The jet mill apparatus of claim 5, wherein, the material conveying device of any one of claims 1-4, the material conveying device is arranged at the material opening of the gas flow mill equipment.

7. The jet mill apparatus of claim 6, wherein, It further comprises a waste gas treatment tank, and the waste gas treatment tank is connected to the exhaust valve. The waste gas treatment tank comprises: a tank body provided with a liquid outlet and a liquid inlet; a waste gas pipe extending into the tank body; a clean gas pipe extending into the tank body a first filter barrel arranged in the tank body, and the waste gas pipe is located in the first filter barrel; a second filter barrel arranged in the tank body, and the clean gas pipe is located in the second filter barrel; 8. The jet mill apparatus of claim 7, wherein, a circulating pump connected to the liquid outlet and the liquid inlet respectively, and used for circulating the liquid in the tank body. The waste gas treatment tank further comprises: a first liquid distribution disc arranged between the waste gas pipe and the first filter barrel, the first liquid distribution disc can guide the liquid from the first filter barrel to the waste gas pipe; 9. A control method for the material delivery device of any one of claims 1 to 4, for use in a jet mill apparatus, characterized in that, a second liquid distribution disc arranged between the clean gas pipe and the second filter barrel, the second liquid distribution disc can guide the liquid from the second filter barrel to the clean gas pipe. The material tank is a discharging tank, and the control method comprises: connecting the discharge tank to the second flange through the locking mechanism; opening the gas exchange mechanism to supply gas to the material conveying passage, and reducing the oxygen content in the material conveying passage to a preset value, and stopping the gas exchange mechanism from supplying gas; opening the tank valve of the discharge tank, and detecting whether the oxygen content in the discharge tank is lower than the preset value; if not, opening the gas exchange mechanism to reduce the oxygen content in the discharge tank to the preset value, and stopping the gas exchange mechanism from supplying gas; opening the first control valve to load material; after the discharge tank is filled with material, closing the tank valve, opening the gas exchange mechanism, closing the first control valve, and purging the material conveying passage, and stopping the gas exchange mechanism from supplying gas after the purging is completed; opening the locking mechanism, and separating the discharge tank from the second flange.

10. A method of controlling the feed device according to any one of claims 1 to 4 for use in a feed for a jet mill apparatus, characterized in that, the material tank is a feeding tank, and the control method comprises: connecting the feeding tank to the second flange through the locking mechanism; opening the gas exchange mechanism to supply gas to the material conveying passage, and reducing the oxygen content in the material conveying passage to a preset value, and stopping the gas exchange mechanism from supplying gas; opening the tank valve of the feeding tank, and opening the first control valve to discharge material; after the feeding tank outputs the material, closing the tank valve, opening the gas exchange mechanism, closing the first control valve, and purging the material conveying passage, and stopping the gas exchange mechanism from supplying gas after the purging is completed; opening the locking mechanism, and separating the feeding tank from the second flange.

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