Material conveying device and material mixing system

Abstract

The utility model relates to a material conveying device and a material mixing system. The material conveying device comprises a support; the first material tank is arranged on the bracket; a first control valve is arranged at one end of the material conveying pipe and is connected with the first material tank; the first air inlet pipe is communicated with the material conveying pipe, and the first air inlet pipe is provided with a second control valve; the first pressure release valve is arranged on the material conveying pipe; the first oxygen meter is used for detecting the oxygen content in the material conveying pipe; the second material tank is connected with the other end of the material conveying pipe; the first position sensor is arranged on the support and is configured to detect whether the second material tank moves to the position below the first material tank or not; the controller is respectively connected with the first control valve, the first oxygen meter, the second control valve and the first position sensor. According to the material conveying device, the first oxygen meter is arranged on the material conveying pipe so as to detect the oxygen content in the material conveying pipe, the controller controls opening and closing of the first control valve according to signals of the first oxygen meter and the first position sensor, and the safety of material conveying is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rare earth magnet preparation, and in particular to a material conveying device and a material mixing system. BACKGROUND

[0002] Neodymium iron boron magnets are widely used in new energy vehicles, intelligent consumer electronics and other industries due to their high coercivity and high magnetic energy product. In the preparation process of neodymium iron boron magnets, a powder mixing process is involved. In the powder mixing process, different raw materials need to be conveyed from a raw material tank to a material mixing tank. The pipeline connecting the raw material tank and the material mixing tank needs to be evacuated of oxygen. Currently, the operation of evacuating oxygen from the pipeline is performed by workers based on experience, and it is difficult to determine whether the oxygen content in the pipeline has reached below the allowable value, which poses a safety hazard. CONTENT OF THE UTILITY MODEL

[0003] Based on the above problems, the present application provides a material conveying device and a material mixing system to improve the safety of material conveying.

[0004] In a first aspect, the present application provides a material conveying device, comprising:

[0005] a support;

[0006] a first material tank arranged on the support;

[0007] a material conveying pipe, one end of which is provided with a first control valve connected to the first material tank;

[0008] a first gas inlet pipe in communication with the material conveying pipe, the first gas inlet pipe being provided with a second control valve;

[0009] a first pressure relief valve arranged on the material conveying pipe;

[0010] a first oxygen detector for detecting the oxygen content in the material conveying pipe;

[0011] a second material tank connected to the other end of the material conveying pipe;

[0012] a first position sensor arranged on the support and configured to detect whether the second material tank is moved below the first material tank;

[0013] a controller connected to the first control valve, the first oxygen detector, the second control valve and the first position sensor, respectively.

[0014] According to some embodiments of the present application, the material conveying device further comprises a second position sensor configured to detect whether the first material tank is placed on the support, the second position sensor being connected to the controller.

[0015] According to some embodiments of the present application, the material conveying device further comprises a guide vehicle, and the second tank is arranged on the guide vehicle.

[0016] According to some embodiments of the present application, the support is provided with a first positioning structure, and the second tank is provided with a second positioning structure matched with the first positioning structure.

[0017] In a second aspect, the present application provides a material mixing system, comprising:

[0018] The material conveying device as described above;

[0019] A third tank is arranged on the support.

[0020] A weighing device is arranged on the support, and the weighing device is connected to the third tank, and the second tank is movable to below the weighing device and connected to the weighing device.

[0021] According to some embodiments of the present application, the weighing device comprises:

[0022] A box body has a cavity.

[0023] A second air inlet pipe is in communication with the cavity, and the second air inlet pipe is provided with a third control valve.

[0024] A third air inlet pipe is in communication with the cavity, and the third air inlet pipe is provided with a fourth control valve.

[0025] A pressure relief pipe is in communication with the cavity, and the pressure relief pipe is provided with a second pressure relief valve.

[0026] A second oxygen meter is arranged on the box body and used for detecting the oxygen content in the cavity.

[0027] A weighing machine is arranged in the cavity.

[0028] A feeding pipe has one end extending into the cavity, and the feeding pipe is used for conveying material to the weighing machine.

[0029] A discharging pipe has one end extending into the cavity, and the weighing machine is configured to convey material to the discharging pipe, and the other end of the discharging pipe is connected to the second tank.

[0030] According to some embodiments of the present application, the weighing device further comprises a material blocking plate arranged at the end of the feeding pipe.

[0031] According to some embodiments of the present application, the weighing machine comprises:

[0032] An electronic scale is arranged in the cavity.

[0033] A hopper is arranged on the electronic scale.

[0034] According to some embodiments of the present application, the part of the second air inlet pipe located in the cavity and the part of the third air inlet pipe located in the cavity are both provided with a plurality of air inlet holes.

[0035] According to some embodiments of the present application, the mixing system further comprises a material agitator connected to the third material tank and the material inlet pipe respectively.

[0036] The material conveying device of the present application is provided with a first oxygen detector on the material conveying pipe to detect the oxygen content in the material conveying pipe, and a controller controls the opening and closing of a first control valve according to the signals of the first oxygen detector and a first position sensor, thereby improving the safety of material conveying. BRIEF DESCRIPTION OF DRAWINGS

[0037] 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 also be obtained according to these drawings by those skilled in the art without departing from the scope of the present application.

[0038] Figure 1 is a schematic diagram of the material conveying device of the embodiment of the present application Figure 1 ;

[0039] Figure 2 is a schematic diagram of the material conveying device of the embodiment of the present application Figure 2 ;

[0040] Figure 3 is a schematic diagram of the first positioning structure and the second positioning structure of the embodiment of the present application

[0041] Figure 4 is a schematic diagram of the mixing system of the embodiment of the present application

[0042] Figure 5 is a schematic diagram of the weighing device of the embodiment of the present application

[0043] Figure 6 is a schematic diagram of the weighing device of the embodiment of the present application

[0044] Figure 7 is a schematic diagram of the air inlet hole of the embodiment of the present application DETAILED DESCRIPTION

[0045] With reference to the drawings of the embodiments of the present application, the technical solutions of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0046] As shown in Figure 1 and Figure 2 , the embodiment of the present application provides a material conveying device 10, which comprises a support 11, a first tank 12, a conveying pipe 13, a first gas inlet pipe 14, a first pressure relief valve 15, a first oxygen meter 16, a second tank 17, a first position sensor 18 and a controller 110.

[0047] The support 11 can be formed by welding square steel or I-beam. The first tank 12 is detachably arranged on the support 11, for example, the first tank 12 is placed on the support 11 by using a lifting device. The first tank 12 is a raw material tank, and optionally, the first tank 12 contains neodymium iron boron powder.

[0048] The top end of the conveying pipe 13 is provided with a first control valve 131 connected to the bottom discharge port of the first tank 11, for example, the first control valve 131 is an existing butterfly valve. The first gas inlet pipe 14 is arranged on the conveying pipe 13, and the first gas inlet pipe 14 communicates with the conveying pipe 13. The first gas inlet pipe 14 is used to convey inert gas to the conveying pipe 13, for example, the inert gas is nitrogen, to discharge oxygen in the conveying pipe 13. The second control valve 141 is arranged on the first gas inlet pipe 14, which controls whether the first gas inlet pipe 14 conveys gas to the conveying pipe 13.

[0049] The first pressure relief valve 15 is arranged on the conveying pipe 13, and when the gas pressure in the conveying pipe 13 is greater than the preset value of the first pressure relief valve 15, the first pressure relief valve 15 is opened to relieve the pressure of the conveying pipe 13. The detection probe of the first oxygen meter 16 is located in the conveying pipe 13, and the first oxygen meter 16 is used to detect the oxygen content in the conveying pipe 13.

[0050] The second tank 17 can be moved below the first tank 12 and connected to the bottom end of the conveying pipe 13. The second tank 17 is a mixing tank, and the material in the first tank 12 can enter the second tank 17 through the conveying pipe 13.

[0051] The first position sensor 18 is arranged on the support 11, for example, the first position sensor 18 is a grating. The first position sensor 18 is configured to detect whether the second tank 17 is moved below the first tank 12, to avoid the situation that the second tank 17 is not moved in place and the first control valve 131 is opened by mistake.

[0052] The controller 110 is communicatively connected with the first control valve 131, the first oxygen detector 16, the second control valve 141 and the first position sensor 18 respectively. The controller 110 can be an existing controller. The first position sensor 18 sends a signal to the controller 110 after detecting that the second tank 17 is moved into position. The second tank 17 is connected with the delivery pipe 13, the second control valve 141 is opened, the inert gas is delivered from the first gas inlet pipe 14 to the delivery pipe 13, and the gas in the delivery pipe 13 is discharged by the first pressure relief valve 15. The first oxygen detector 16 sends the detected oxygen content in the delivery pipe 13 to the controller 110.

[0053] The controller 110 determines whether the second tank 17 is moved into position according to the signal of the first position sensor 18, and determines whether the oxygen content in the delivery pipe 13 is lower than the first preset value according to the signal of the first oxygen detector 16. If it is determined that the second tank 17 is moved into position and the oxygen content in the delivery pipe 13 is lower than the first preset value, the controller 110 controls the first control valve 131 to be opened, and the material in the first tank 12 can enter the second tank 17 through the delivery pipe 13.

[0054] The material delivery device 10 of the embodiment is provided with the first oxygen detector 16 on the delivery pipe 13 to detect the oxygen content in the delivery pipe 13, and the controller 110 controls the opening and closing of the first control valve 131 according to the signals of the first oxygen detector 16 and the first position sensor 18, thereby improving the safety of material delivery.

[0055] As shown in FIG. 1, Figure 3 In some embodiments, the material delivery device 10 further comprises a second position sensor 112, which is arranged on the support 11. Optionally, the second position sensor 112 is a proximity sensor. The second position sensor 112 is communicatively connected with the controller 110. The second position sensor 112 is configured to detect whether the first tank 12 is placed on the support 11.

[0056] The controller 110 controls the opening and closing of the first control valve 131 according to the signals of the first position sensor 18, the second position sensor 112 and the first oxygen detector 16.

[0057] The controller 110 determines whether the first tank 12 is moved into position according to the signal of the second position sensor 112, determines whether the second tank 17 is moved into position according to the signal of the first position sensor 18, and determines whether the oxygen content in the delivery pipe 13 is lower than the first preset value according to the signal of the first oxygen detector 16. If it is determined that the first tank 12 is placed on the support 11, the second tank 17 is moved into position and the oxygen content in the delivery pipe 13 is lower than the first preset value, the controller 110 controls the first control valve 131 to be opened.

[0058] In some embodiments, the material conveying device 10 further comprises a guided vehicle 120, and the second tank 18 is arranged on the guided vehicle 120. Optionally, the guided vehicle 120 is an automatic guided vehicle, which can drive the second tank 18 to move to a preset position.

[0059] In some embodiments, the support 11 is provided with a first positioning structure 111, and the first tank 12 is provided with a second positioning structure 121 matched with the first positioning structure. For example, the first positioning structure 111 is a positioning hole, and the second positioning structure 121 is a positioning column. When the first tank 12 is placed on the support 11, the positioning column is inserted into the positioning hole, so as to facilitate repeated installation and positioning of the first tank 12 and the support 11.

[0060] As shown in Figure 4 , the embodiment of the present application provides a material mixing system 100, which comprises the material conveying device 10, the third tank 20 and the weighing device 30 as described above. The third tank 20 is arranged on the support 11, and the size of the support 11 is set according to requirements. The third tank 20 is a raw material tank, for example, the third tank 20 is used for containing rare earth powder.

[0061] The weighing device 30 is arranged on the support 11. Optionally, the weighing device 30 is arranged below the support 11, and the weighing device 30 is connected to the third tank 20. The material in the third tank 20 can be conveyed to the weighing device 30 for weighing. The second tank 17 can be moved below the weighing device 30 and connected to the weighing device 30. The weighing device 30 weighs a preset mass of material and conveys the material to the second tank 17.

[0062] For example, after the second tank 17 receives the neodymium iron boron powder in the first tank 12, the guided vehicle 120 drives the second tank 17 to move below the weighing device 30, and the second tank 17 is connected to the weighing device 30. The weighing device 30 pours a preset mass of rare earth powder into the second tank 17.

[0063] Optionally, a third position sensor 40 is arranged on the support 11 or the ground. Optionally, the third position sensor 40 is a grating, which is used for detecting whether the second tank 17 moves below the weighing device 30. The third position sensor 40 is in communication connection with the controller 110.

[0064] As shown in Figure 5 and Figure 6 , in some embodiments, the weighing device 30 comprises a box body 31, a second air inlet pipe 32, a third air inlet pipe 33, a pressure relief pipe 34, a second oxygen meter 35, a weighing device 36, a feeding pipe 37 and a discharging pipe 38.

[0065] The box 31 has a closed cavity 311, and the box 31 is optionally a cuboid. The second air inlet pipe 32 is connected to the cavity 311, and the second air inlet pipe 32 is optionally arranged on one side of the box 31. The second air inlet pipe 32 can deliver gas into the cavity 311, and the gas is inert gas. The third control valve 321 is arranged on the second air inlet pipe 32, and the third control valve 321 can control whether the second air inlet pipe 32 delivers gas into the cavity 311. The third control valve 321 is in communication connection with the controller 110.

[0066] The third air inlet pipe 33 is connected to the cavity 311, and the third air inlet pipe 33 is optionally arranged on the same side of the box 31 as the second air inlet pipe 32. The third air inlet pipe 33 can also deliver inert gas into the cavity 311. The fourth control valve 331 is arranged on the third air inlet pipe 33, and the fourth control valve 331 can control whether the third air inlet pipe 33 delivers gas into the cavity 311. The fourth control valve 331 is in communication connection with the controller 110.

[0067] The pressure relief pipe 34 is connected to the cavity 311, and the second pressure relief valve 341 is arranged on the pressure relief pipe 34. The pressure relief pipe 34 and the second air inlet pipe 32 are optionally arranged on opposite sides of the box 31. When the gas pressure in the cavity 311 is greater than a second preset value, the second pressure relief valve 341 is opened to relieve the pressure in the cavity 311.

[0068] The second oxygen detector 35 is arranged on the box 31, and the probe of the second oxygen detector 35 is located in the cavity 311. The second oxygen detector 35 is used to detect the oxygen content in the cavity 311.

[0069] The rare earth powder will be oxidized after being in contact with air, and even has the risk of explosion. The second air inlet pipe 32 and the third air inlet pipe 33 are used to deliver inert gas into the cavity 311 to reduce the oxygen content in the cavity 311.

[0070] When the oxygen content in the cavity 311 exceeds a third preset value, the controller controls the third control valve 321 and the fourth control valve 331 to be opened to empty the oxygen in the cavity 311 at a large flow rate. When the oxygen content in the cavity 311 is reduced to a fourth preset value, the fourth control valve 331 is closed, and the second air inlet pipe 32 supplies gas into the cavity 311 at a small flow rate to protect the inert gas environment in the cavity 311.

[0071] For example, when the oxygen content in the cavity 311 is 1000 ppm or more, the controller 110 controls the third control valve 321 and the fourth control valve 331 to be opened, the gas inlet pressure of the second air inlet pipe 32 is 5 KPa, and the gas inlet pressure of the third air inlet pipe 33 is 5 KPa. When the oxygen content in the cavity 311 is reduced to 500 ppm or less, the fourth control valve 331 is closed, and the gas inlet pressure of the second air inlet pipe 32 is 0.8 KPa.

[0072] The weighing device 30 includes a cavity 311, a weighing device 36, a feeding pipe 37, and a discharging pipe 38. The weighing device 36 is disposed in the cavity 311 and is in communication with the controller 110. The bottom end of the feeding pipe 37 extends into the cavity 311, for example, the feeding pipe 37 is located at the top of the box 31. The feeding pipe 37 is connected to the third tank 20, and the third tank 20 contains the material, for example, the material is rare earth powder. The feeding pipe 37 is used to transport the material in the third tank 20 to the weighing device 36, for example, the material output by the third tank 20 is transported to the weighing device 36 along the feeding pipe 37 under the action of gravity.

[0073] The top end of the discharging pipe 38 extends into the cavity 311, and the discharging pipe 38 is located at the lower part of the box 31. The bottom end of the discharging pipe 38 can be connected to the second tank 17. When the material on the weighing device 36 reaches the preset mass, the material transportation to the weighing device 36 is stopped, and the weighing device 36 is configured to transport the material to the discharging pipe 38, and the material enters the second tank 17 along the discharging pipe 38.

[0074] Optionally, a feeding valve is arranged at the top end of the feeding pipe 37, and the feeding valve is in communication with the controller 110. When the material on the weighing device 36 reaches the preset mass, the weighing device 36 sends a signal to the controller 110, and the controller 110 closes the feeding valve according to the signal of the weighing device 36 to stop feeding the material to the weighing device 36.

[0075] The weighing device 30 of the embodiment provides a safe environment for the weighing of rare earth powder, and can automatically weigh the rare earth powder and transport the weighed powder to the tank, thereby improving the working efficiency of the weighing and reducing the safety hazards during production.

[0076] In some embodiments, the weighing device 100 further includes a material blocking plate 39 arranged at the bottom end of the feeding pipe 37 to reduce the splashing of the material when falling onto the weighing device 36 and reduce unnecessary loss of the material.

[0077] In some embodiments, the weighing device 36 includes an electronic scale 361 and a hopper 362. The electronic scale 361 is disposed in the cavity 311 and is in communication with the controller 110, and the hopper 362 is disposed on the electronic scale 361. The material falls into the hopper 362 from the feeding pipe 37, and when the mass of the material in the hopper 362 reaches the preset mass, the electronic scale 361 sends a signal to the controller 110, and the controller 110 controls the feeding valve to be closed according to the signal of the electronic scale 361. The hopper 362 is driven by a motor to be flipped, and the material in the hopper 362 enters the discharging pipe 38 and enters the second tank 17 along the discharging pipe 38.

[0078] As Figure 7As shown, in some embodiments, both the portion of the first air intake pipe 32 located in the cavity 311 and the portion of the second air intake pipe 33 located in the cavity 311 are provided with multiple air intake holes. For example, both the first air intake pipe 32 and the second air intake pipe 33 extend from one side of the cavity 311 to the opposite side of the cavity 311. The first air intake pipe 32 is provided with multiple first air intake holes 322 arranged in sequence, and the second air intake pipe 33 is provided with multiple second air intake holes 332 arranged in sequence. Providing multiple air intake holes in both the first air intake pipe 32 and the second air intake pipe 33 is beneficial for improving the uniformity of oxygen content at different locations in the cavity 311.

[0079] like Figure 6 As shown, in some embodiments, the mixing system 100 further includes a vibrator 40, which is connected to the third material tank 20 and the feed pipe 37. The vibrator 40 is communicatively connected to the controller 110, and conveys the material output from the third material tank 20 to the feed pipe 37. After the weighing device 36 weighs a preset value of material, the controller 110 controls the vibrator 40 to stop working, thereby stopping the feeding of material to the weighing device 36. The vibrator 40 can be an existing vibrator.

[0080] Optionally, the opening of the second material tank 17 is provided with a butterfly valve 171 to control the opening and closing of the second material tank 17.

[0081] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the technical solutions and core ideas of this application. Therefore, any changes or modifications made by those skilled in the art based on the ideas of this application, and on the specific implementation methods and application scope of this application, are all within the scope of protection of this application. In summary, the content of this specification should not be construed as a limitation of this application.

Claims

1. A material conveying device, characterized in that, The material conveying device comprises: a support; a first tank arranged on the support; a material conveying pipe, one end of which is provided with a first control valve connected to the first tank; a first air inlet pipe connected to the material conveying pipe, the first air inlet pipe being provided with a second control valve; a first pressure relief valve arranged on the material conveying pipe; a first oxygen detector arranged on the material conveying pipe for detecting the oxygen content in the material conveying pipe; a second tank connected to the other end of the material conveying pipe; a first position sensor arranged on the support and configured to detect whether the second tank is moved below the first tank; a controller connected to the first control valve, the first oxygen detector, the second control valve and the first position sensor respectively.

2. The material conveying apparatus of claim 1, wherein, Further comprising a second position sensor configured to detect whether the first tank is placed on the support, the second position sensor being connected to the controller.

3. The material delivery apparatus of claim 1, wherein, Further comprising a guide vehicle, the second tank being arranged on the guide vehicle.

4. The material delivery apparatus of claim 1, wherein, The support is provided with a first positioning structure, and the first tank is provided with a second positioning structure matched with the first positioning structure.

5. A compounding system characterized by, The material conveying device according to any one of claims 1-4; a third tank arranged on the support; a weighing device arranged on the support, the weighing device being connected to the third tank, and the second tank being capable of being moved below the weighing device and connected to the weighing device. The weighing device comprises:

6. The compounding system of claim 5, wherein, a box body having a cavity; a second air inlet pipe connected to the cavity, the second air inlet pipe being provided with a third control valve; a third air inlet pipe connected to the cavity, the third air inlet pipe being provided with a fourth control valve; a pressure relief pipe connected to the cavity, the pressure relief pipe being provided with a second pressure relief valve; a second oxygen detector arranged on the box body for detecting the oxygen content in the cavity; a weighing machine arranged in the cavity; a material feeding pipe, one end of which extends into the cavity, the material feeding pipe being used for conveying material to the weighing machine; a material discharging pipe, one end of which extends into the cavity, the weighing machine being configured to convey material to the material discharging pipe, the other end of the material discharging pipe being connected to the second tank. The weighing device further comprises a material blocking plate arranged at the end of the material feeding pipe.

7. A compounder system as claimed in claim 6, wherein, The weighing machine comprises:

8. The compounding system of claim 6, wherein, an electronic scale arranged in the cavity; a hopper arranged on the electronic scale. The second air inlet pipe and the third air inlet pipe are both provided with a plurality of air inlet holes.

9. The compounding system of claim 6, wherein, Further comprising a material vibrator connected to the third tank and the material feeding pipe respectively.

10. The compounding system of claim 6, wherein, ​

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