Atomizer rotating shaft detection device

Abstract

The utility model discloses an atomizer rotating shaft detection device, and relates to the technical field of rotating speed detection. The device specifically comprises a drying tower and a centrifugal atomizer arranged at the top end of the drying tower, the centrifugal atomizer comprises a main shaft, a metal piece, a proximity switch and a display unit, and the main shaft rotates at the top end of the drying tower; the metal piece is horizontally located on the circumferential wall of the main shaft and synchronously rotates along with the main shaft. The proximity switches are located on the same horizontal plane of the metal piece, the detection ends of the proximity switches face the metal piece, and when the metal piece and the proximity switches are aligned, the display unit receives electric signals from the proximity switches and generates a numerical value used for displaying the rotating speed of the metal piece. The display unit directly generates the rotating speed value of the spindle according to the electric signal, so that the rotating speed condition of the spindle can be observed in time, the rotating shaft measurement convenience and accuracy of the atomizer are improved, the spindle measurement accuracy is prevented from being influenced by high-temperature and high-humidity working conditions at the top end of the drying tower, and subsequent spindle damage can be prevented in advance.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotational speed detection technical field, especially relates to a kind of atomizer rotating shaft detection device. BACKGROUND

[0002] Spray drying technology is a kind of process in liquid forming and drying industry, is widely used in lithium ion battery positive material lithium iron phosphate production, generates powdery, granular dry product.

[0003] Centrifugal atomizer as the core component of spray dryer, its rotational speed directly influences the release speed of mist drop leaving atomizing disc and the distribution of mist drop particle size, and then determines the drying quality of product and the degree of occurrence of wall sticking phenomenon.

[0004] The existing atomizer has significant technical problems in the running process: the rotational speed of atomizer cannot be observed in real time at the top of drying tower, the high temperature and high humidity conditions at the top of drying tower cause conventional photoelectric sensor to be easily disturbed by steam, measurement data is seriously distorted, actual working rotational speed cannot be reflected, it is difficult to make real-time adjustment to the rotational speed of atomizer rotating shaft according to the size of mist drop particle size, and the stability of product quality is affected; secondly, it is difficult to accurately evaluate the rotating shaft running state of atomizer equipment, secondary faults such as imbalance of atomizing disc and sealing failure are easily caused, and the effect identification of equipment maintenance and repair is affected.

[0005] Therefore, in order to solve the above technical problems, the rotational speed of atomizer is not easy to detect, the stability of product quality cannot be guaranteed, and the identification of equipment maintenance and repair is also affected. CONTENT OF UTILITY MODEL

[0006] The main purpose of the utility model is to provide a kind of atomizer rotating shaft detection device, to improve the rotating shaft measurement convenience and accuracy of atomizer, prevent the problem caused by the difficulty or inaccuracy of rotating shaft data acquisition.

[0007] In order to achieve the above purpose, the utility model provides a kind of atomizer rotating shaft detection device, including drying tower and centrifugal atomizer arranged at the top end of the drying tower, the centrifugal atomizer includes:

[0008] Main shaft, rotates at the top end of the drying tower;

[0009] Metal part, horizontally on the circumference wall of the main shaft, and rotates synchronously with the main shaft;

[0010] Proximity switch, on the same horizontal plane of the metal part, and its detection end is towards the metal part, when the metal part is aligned with the proximity switch, the proximity switch can generate electrical signal;And

[0011] The display unit receives the electric signal from the proximity switch, generates and displays the rotating speed value of the metal piece.

[0012] In the above scheme, the metal piece is close to the inductive proximity switch, the relay coil of the inductive proximity switch starts to be excited, the transistor is turned on, the input pulse signal is converted into a passive pulse signal output to the digital tachometer, the digital tachometer has the function of a processor, and the passive pulse signals of the inductive proximity switch within a certain time are counted, the actual working rotating speed of the main shaft is detected, and the rotating speed is displayed on the display screen. The display speed of the digital tachometer is basically consistent with the feedback rotating speed on the operation display screen at the bottom of the drying tower, and the two are verified with each other, effectively avoiding the deviation of the rotating speed measurement; and reducing the wrong judgment of the maintenance and repair effect caused by the failure to observe the rotating speed of the main shaft in time, the damage of the equipment and the occurrence of secondary accidents.

[0013] Further, the driving wheel is connected to the main shaft and rotates synchronously with the main shaft, and the metal piece is connected to the outer peripheral wall of the driving wheel. The driving wheel can also be directly sleeved on the main shaft, and directly driven to rotate synchronously with the main shaft to realize synchronous rotation of the metal piece.

[0014] Further, the top end of the drying tower is connected with a speed regulating motor, and the output shaft of the speed regulating motor is connected with the main shaft in transmission.

[0015] Further, the display unit generates a correction signal for transmission to the speed regulating motor according to the electric signal received by the display unit. When the display unit receives the electric signal from the proximity switch, it converts the electric signal into a rotating speed value and discriminates the rotating speed value from a rotating speed threshold value, i.e. the correction signal of the present application, and the speed regulating motor adjusts the rotating speed of the main shaft according to the correction signal to meet the rotating speed requirement of the main shaft.

[0016] Further, the liquid supply device connected to the drying tower, the end of the main shaft located in the drying tower is connected with an atomizing disc, and the high-speed rotating atomizing disc forms mist droplets from the liquid from the liquid supply device.

[0017] Further, the liquid supply device comprises a liquid storage tank and a feed pump, the feed pump is connected to the liquid outlet of the liquid storage tank and pumps the liquid in the liquid storage tank to the atomizing disc.

[0018] Further, the air supply fan and the hot blast stove are connected, and the air supply fan sends the air of the hot blast stove into the drying tower.

[0019] Further, the path of the air supply fan sending the hot blast stove into the drying tower is also connected with a filtering device.

[0020] Further, the filtering device comprises an air filter one and an air filter two, the air filter one is arranged at the front end of the air blower, and the air filter two is arranged between the hot blast stove and the drying tower.

[0021] Further, a cyclone separator is connected to the discharge port of the drying tower.

[0022] The above technical scheme has the following advantages:

[0023] The metal piece is arranged on the circumferential wall of the main shaft at the top end of the drying tower, and the metal piece rotates synchronously with the main shaft, the detection end of the proximity switch is close to the metal piece, and when the metal piece is aligned with the proximity switch, an electrical signal of the input display unit is generated in the proximity switch, the display unit directly generates the rotation speed value of the main shaft according to the electrical signal, the rotation speed condition of the main shaft can be observed in time, the rotation shaft measurement convenience and accuracy of the atomizer are improved, the measurement accuracy of the main shaft is prevented from being affected by the high-temperature and high-humidity working condition at the top end of the drying tower, and subsequent damage of the main shaft can be prevented in advance. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be described in detail below in combination with specific embodiments and drawings, in which:

[0025] Figure 1 The utility model is a line connection diagram;

[0026] Figure 2 The utility model is a rotation speed detection structure diagram of the main shaft.

[0027] In the drawing: 1, liquid storage tank; 2, feed pump; 3, drying tower; 4, centrifugal atomizer; 5, speed regulation motor; 6, proximity switch; 7, display unit; 8, main shaft; 9, atomizing disc; 10, cyclone separator; 11, air filter one; 12, air blower; 13, hot blast stove; 14, air filter two; 15, unloading valve; 16, driving wheel; 17, fixed plate; 18, support; 19, metal piece. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in detail below in combination with drawings and embodiments. It should be understood that the following specific embodiments are only used to explain the utility model, and do not constitute limitation to the utility model.

[0029] For example, Figure 1 And Figure 2As shown, an atomizer rotating shaft detection device, comprising a drying tower 3 and a centrifugal atomizer 4 arranged at the top end of the drying tower 3, the centrifugal atomizer 4 comprising a main shaft 8, a metal piece 19, a proximity switch 6 and a display unit 7, the main shaft 8 rotating at the top end of the drying tower 3; the metal piece 19 is horizontally arranged on the circumferential wall of the main shaft 8 and rotates synchronously with the main shaft 8; the proximity switch 6 is arranged at the same horizontal position of the metal piece 19 and its detection end faces the metal piece 19, when the metal piece 19 is aligned with the proximity switch 6, the proximity switch 6 can generate an electrical signal; the display unit 7 receives the electrical signal from the proximity switch 6, generates and displays the rotating speed value of the metal piece 19. Wherein, the drying tower 3 can convert the positive material of the battery, such as lithium iron phosphate, into micron-level particles through high-speed centrifugal atomization, and then form a powder material with a specific morphology after drying, the main shaft 8 provides driving force for the high-speed centrifugation of the drying tower 3, and the metal piece 19 is arranged on the circumferential wall of the main shaft 8 and can be arranged around the outer wall of the main shaft 8, when the main shaft 8 rotates, the metal piece 19 is aligned with the proximity switch 6, and the proximity switch 6 can obtain an electrical signal to obtain the rotating speed of the main shaft 8, the proximity switch 6 can adopt an inductive switch, which is accurate and will not be affected by the high temperature and high humidity of the drying tower 3; the metal piece 19 can adopt bolts, screws, etc.

[0030] Specifically, the metal piece 19 is uniformly fixed on the circumferential wall of the main shaft 8, and the outer wall of the main shaft 8 can also form a boss for placing the metal piece 19, as the main shaft 8 rotates, the main shaft 8 drives the metal piece 19 to rotate, and the metal pieces 19 are sequentially aligned with the proximity switch 6, the proximity switch 6 periodically receives an electrical signal, the electrical signal is sent to the display unit 7, the display unit 7 receives the electrical signal and processes the data of the electrical signal, so that the electrical signal is converted into a rotating speed value, and the rotating speed value of the metal piece 19 is displayed, specifically, the display unit 7 includes but is not limited to a digital tachometer, the top end of the drying tower 3 is also provided with a support 18, a fixed plate 17 is arranged above the support 18, the proximity switch 6 is fixed on the support 18, so that the proximity switch 6 can always be at the horizontal position of the metal piece 19 and can perform real-time signal detection towards the metal piece 19.

[0031] When the proximity switch 6 is inductive, and the display unit 7 is a digital tachometer, the metal piece 19 approaches the inductive proximity switch 6, the relay coil of the inductive proximity switch 6 starts to be excited, the transistor is turned on, the input pulse signal is converted into a passive pulse signal and output to the digital tachometer, the digital tachometer has the function of a processor, counts the passive pulse signal of the inductive proximity switch 6 within a certain time, realizes the detection of the actual working speed of the main shaft 8, and displays the speed on the display screen. The digital tachometer displays the speed, which is basically consistent with the feedback speed on the operation display screen at the bottom of the drying tower 3, and the two are verified with each other, effectively avoiding the deviation of the speed measurement; and reducing the wrong judgment of the maintenance and repair effect caused by the failure to observe the speed of the main shaft 8 in time, the damage of the equipment and the occurrence of secondary accidents.

[0032] As shown in Figure 2 , the present application comprises a driving wheel 16 connected to the main shaft 8 and rotating synchronously with the main shaft 8, and the metal piece 19 is connected to the outer peripheral wall of the driving wheel 16. The driving wheel 16 can be selected as a belt pulley or a multi-wedge belt wheel to drive the main shaft 8 to rotate. The belt pulley and the multi-wedge belt wheel can drive the main shaft 8 to rotate in a belt mode, thereby driving the main shaft 8 to rotate at high speed to realize centrifugal atomization operation. The driving wheel 16 can also be directly sleeved on the main shaft 8 to drive the driving wheel 16 to rotate synchronously through the rotation of the main shaft 8, thereby realizing synchronous rotation of the metal piece 19.

[0033] As shown in Figure 1 , as an embodiment of the present application, the top end of the drying tower 3 is connected with a speed regulating motor 5, the output shaft of the speed regulating motor 5 is in transmission connection with the main shaft 8. The output shaft of the speed regulating motor 5 can be directly connected with the main shaft 8 to drive the main shaft 8 to rotate at high speed through the speed regulating motor 5, or drive the main shaft 8 to rotate at high speed through a belt pulley, a gear, etc. At the same time, the speed regulating motor 5 can be adjusted by parameters to adjust the speed of the main shaft 8, so that the rotation of the main shaft 8 is within a reasonable range to avoid damage to the equipment.

[0034] As shown in Figure 1 and Figure 2 , in order to further improve the speed regulation ability of the speed regulating motor 5, the display unit 7 generates a correction signal for transmission to the speed regulating motor 5 according to the electrical signal received by it. In the initial state, a speed threshold value is set for the display unit 7. When the display unit 7 receives an electrical signal from the proximity switch 6, it converts the electrical signal into a speed value and discriminates the speed value from the speed threshold value, i.e. the correction signal of the present application. The speed regulating motor 5 adjusts the speed of the main shaft 8 according to the correction signal to meet the speed requirement of the main shaft 8.

[0035] As shown in Figure 1As shown, the application includes a liquid supply device connected to the drying tower 3, the end of the main shaft 8 located in the drying tower 3 is connected with an atomizing disc 9, the atomizing disc 9 rotates at high speed to form mist liquid drops from the liquid from the liquid supply device, the main shaft 8 drives the atomizing disc 9 to rotate at high speed, the atomizing disc 9 atomizes the liquid into extremely small mist liquid drops, facilitating the subsequent evaporation drying of the positive material of the battery.

[0036] Specifically, the liquid supply device includes a liquid storage tank 1 and a feed pump 2, the feed pump 2 is connected to the liquid outlet of the liquid storage tank 1 and pumps the liquid in the liquid storage tank 1 to the atomizing disc 9, and the liquid outlet pipe is formed into extremely small mist liquid drops as the atomizing disc 9 rotates at high speed. In addition, the liquid storage tank 1 can also be selected as a container for storing different solvents.

[0037] As shown, Figure 1 The application includes a blower 12 and a hot blast stove 13 connected, the blower 12 sends the air of the hot blast stove 13 into the drying tower 3, the blower 12 is turned on to blow the external air into the hot blast stove 13, and then the high-temperature air of the hot blast stove 13 flows to the drying tower 3 to evaporate the material in the drying tower 3 at high temperature, and the blower 12 is preferably installed at the front end of the hot blast stove 13 to prevent the high-temperature air of the hot blast stove 13 from flowing into the blower 12 and causing damage to the blower 12.

[0038] As shown, Figure 1 The path of the blower 12 sending the hot blast stove 13 into the drying tower 3 is also connected with a filtering device, the filtering device is used to filter the external air and send the filtered air into the drying tower 3. The filtering device can be provided with only one, which is assembled at the front end of the blower 12, and the application preferably includes an air filter one 11 and an air filter two 14, the air filter one 11 is provided at the front end of the blower 12, and the air filter two 14 is provided between the hot blast stove 13 and the drying tower 3 to achieve coarse filtering and fine filtering of the external air.

[0039] As shown, Figure 1 The application includes a cyclone separator 10 connected to the discharge port of the drying tower 3, the bottom end of the cyclone separator 10 is installed with a discharge valve 15, the powder outlet of the drying tower 3 is communicated with the cyclone separator 10, and the cyclone separator 10 is used to collect the powder by classification.

[0040] The above only describes the preferred embodiments of the application, and does not limit the patent range of the application, and any equivalent structural transformation made under the application concept of the application, or direct / indirect application in other related technical fields is included in the patent protection range of the application.

Claims

1. A device for detecting the shaft of an atomizer, characterized in that, It includes a drying tower (3) and a centrifugal atomizer (4) disposed at the top of the drying tower (3), the centrifugal atomizer (4) comprising: The main shaft (8) rotates at the top of the drying tower (3); Metal part (19) is horizontally positioned on the circumferential wall of the main shaft (8) and rotates synchronously with the main shaft (8); A proximity switch (6) is positioned on the same horizontal plane as the metal part (19), with its detection end facing the metal part (19). When the metal part (19) is aligned with the proximity switch (6), the proximity switch (6) generates an electrical signal; and The display unit (7) receives an electrical signal from the proximity switch (6) and generates and displays the rotational speed value of the metal part (19).

2. The atomizer shaft detection device as described in claim 1, characterized in that, It includes a drive wheel (16), which is connected to the main shaft (8) and rotates synchronously with the main shaft (8), and the metal part (19) is connected to the outer peripheral wall of the drive wheel (16).

3. The atomizer shaft detection device as described in claim 1, characterized in that, The top of the drying tower (3) is connected to a speed-regulating motor (5), and the output shaft of the speed-regulating motor (5) is connected to the main shaft (8) for transmission.

4. The atomizer shaft detection device as described in claim 3, characterized in that, The display unit (7) generates a correction signal for transmission to the speed-regulating motor (5) based on the electrical signal it receives.

5. The atomizer shaft detection device as described in claim 1, characterized in that, Includes a liquid supply device connected to the drying tower (3), and the end of the main shaft (8) located inside the drying tower (3) is connected to an atomizing disc (9). The high-speed rotating atomizing disc (9) forms the liquid from the liquid supply device into atomized droplets.

6. The atomizer shaft detection device as described in claim 5, characterized in that, The liquid supply device includes a liquid storage tank (1) and a feed pump (2). The feed pump (2) is connected to the liquid outlet of the liquid storage tank (1) and pumps the liquid from the liquid storage tank (1) to the atomizing disc (9).

7. The atomizer shaft detection device as described in claim 1, characterized in that, It includes a blower (12) and a hot air furnace (13) connected to each other, wherein the blower (12) delivers air from the hot air furnace (13) into the drying tower (3).

8. The atomizer shaft detection device as described in claim 7, characterized in that, A filter is also connected to the path of the blower (12) that sends the hot air furnace (13) into the drying tower (3).

9. The atomizer shaft detection device as described in claim 8, characterized in that, The filtration device includes an air filter one (11) and an air filter two (14). The air filter one (11) is located at the front end of the blower (12), and the air filter two (14) is located between the hot air furnace (13) and the drying tower (3).

10. The atomizer shaft detection device as described in claim 1, characterized in that, Includes a cyclone separator (10) connected to the outlet of the drying tower (3).

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