Device for online automatic detection of moisture of unformed plate lead plaster after surface drying

Abstract

The invention belongs to the technical field of lead-acid storage battery unformed plate lead plaster filling manufacturing, and discloses a device for online automatic detection of unformed plate lead plaster moisture after surface drying, the device comprises a conveying device and a drying kiln mounted above the conveying device, one side of the drying kiln is provided with a controller, and the other side of the drying kiln is provided with a controller. Relative humidity range information can be converted into moisture content information through program setting in the controller, the moisture content and relative humidity data are detected through the dry-wet temperature sensor, the corresponding range can be found out, the heating temperature and the moisture content of the adjustable heating device in the drying kiln are controlled through the controller, the temperature in the drying kiln is reduced, and the temperature in the drying kiln is reduced. On the contrary, if the moisture content is high and the temperature in the drying kiln rises, the temperature in the drying kiln is regulated and controlled in real time, so that moisture detection of the lead plaster on the green plate is realized by detecting the relative air humidity at the tail end of the drying kiln, manual operation is reduced, and the consistency of surface dry moisture of the green plate is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of manufacturing lead paste filling of green plates of lead-acid batteries, and particularly relates to a device for automatically detecting moisture in green plate lead paste online after surface drying. Background Art

[0002] In the manufacture of lead-acid battery green plates, lead paste filling is basically applied by a coating machine. Regardless of the previous weight-casting grid or the more advanced and popular continuous casting and rolling grid, both are coated by a paste-coating double-sided coating machine. After the gravity-casting or continuous casting and rolling grid is coated by the coating machine head, the former needs to be dried after acid showering to prevent the lead paste cracks on the plate surface after drying and the adhesion of the stacked plates between the green plates. Although the surface of the continuous casting and rolling green plates is covered with coating paper after coating, in order to prevent the green plates from adhesion and to facilitate the alignment of the green plates, the surface of the green plates also needs to be dried. At this stage, the surface drying degree is basically adopted to control the surface drying temperature and manually use a rapid moisture tester to detect the moisture content of the lead paste, so as to meet the moisture content of the lead paste and provide a guarantee for the subsequent curing of the green plates.

[0003] Lead-acid batteries are increasingly used in various fields due to their high safety, low price and wide application. They are used in automobile starting, backup power supply, power energy, etc. The degree of automation in lead-acid battery manufacturing is getting higher and higher. Green plates are gradually manufactured using the four-continuous technology of continuous casting, continuous rolling, continuous punching and continuous coating. Regardless of whether the green plates are cast by weight or coated by four-continuous coating, the green plates must pass through a surface drying kiln for surface drying. During the drying process, in order to meet the moisture requirements of the green plate curing process, operators and quality inspectors are required to frequently test the moisture content of the green plate lead paste to meet the control requirements.

[0004] However, after the lead-acid battery plates are filled and dried in a surface drying kiln, the moisture content of the lead paste of the green plates is usually detected by taking a certain amount of lead paste on the dried green plates and placing it in a rapid moisture tester. The tester automatically weighs the lead paste and then starts heating. After the temperature rises to 150°C and is maintained for 8 to 10 minutes, the weight of the lead paste no longer changes after it loses water, and the tester displays the surface dry moisture content. This test method is time-consuming and the results are delayed. The whole process takes 10 to 12 minutes, and the measurement time is long. During the measurement process, the coated plates are still in continuous production. If the moisture content is unqualified, it is difficult to guarantee the quality of the coated green plates without further adjustment.

[0005] To this end, we propose an online automatic detection device for the moisture content of green plate lead paste after surface drying to solve the problems existing in the prior art. The surface drying moisture content of the green plate can be detected by detecting the relative humidity of the air inside the end of the surface drying kiln. The temperature inside the drying kiln is detected to correspond to different humidity environments. When the moisture content in the drying kiln is low, the temperature of the surface drying kiln heating device is reduced. On the contrary, when the moisture content is high, the temperature of the heating device is increased. The temperature can be adjusted in real time according to the humidity changes, thereby improving the moisture control effect of the lead paste coated on the green plate. Summary of the Invention

[0006] The purpose of the present invention is to provide an online device for automatically detecting the moisture content of green plate lead paste after surface drying, so as to solve the problem proposed in the above background technology that in the prior art, a fixed amount of lead paste on the dried green plate is usually taken and placed in a rapid moisture tester. The tester automatically weighs the lead paste and then starts heating. After the lead paste loses water, the weight no longer changes, and the tester displays the surface drying moisture content. This testing method takes a long time, the results are delayed, and the product yield is reduced.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] An online automatic detection device for the moisture content of green plate lead paste after surface drying, comprising:

[0009] A conveying device, and a drying kiln installed above the conveying device, a controller is provided on one side of the drying kiln, and an adjustable heating device is provided on the top of the inner cavity of the drying kiln;

[0010] A water supply box is provided at the discharge end of the drying kiln, a dry and wet temperature sensor is provided on the water supply box, cotton gauze is provided on the dry and wet temperature sensor, a through hole for the cotton gauze to pass through is opened on the upper surface of the water supply box, both ends of the cotton gauze are immersed in the water in the water supply box, a water inlet tank is provided on the upper surface of the drying kiln, a connecting pipe is provided between the water inlet tank and the water supply tank, and a float valve is provided in the water inlet tank.

[0011] Furthermore, an alarm is provided at an upper end of one side of the drying kiln, the alarm and the dry and wet temperature sensors are electrically connected to the controller, and the adjustable heating device is electrically connected to the controller.

[0012] Furthermore, a water inlet pipe is provided on one side of the water inlet tank, the valve seat of the float valve is installed on the upper end of the connecting pipe, and a liquid level sensor electrically connected to the controller is provided in the inner cavity of the water supply tank.

[0013] Furthermore, a plurality of connecting rods are provided on the upper surface of the water supply box, and the plurality of connecting rods are fixedly connected to the top of the inner cavity of the drying kiln.

[0014] Furthermore, the cotton gauze is arranged in multiple layers, mainly consisting of 3-5 layers of cotton gauze net, and the length of the cotton gauze is 90-110 mm.

[0015] Furthermore, a first heating assembly and a second heating assembly are sequentially provided on both sides of the inner cavity of the drying kiln from bottom to top, and an adjusting door is provided at both the feeding end and the discharging end of the drying kiln.

[0016] Furthermore, the adjustable heating device includes two groups of second cylinders installed on the upper surface of the drying kiln, the telescopic ends of the two groups of second cylinders pass through the drying kiln and are fixedly connected to a mounting plate, and a heating coil is provided on the lower surface of the mounting plate, and the heating coil is arranged in a serpentine shape.

[0017] Furthermore, the upper surface of the mounting plate is provided with multiple groups of guide rods, and the upper ends of the multiple groups of guide rods all penetrate above the drying kiln. The lower surface of the mounting plate is provided with multiple groups of reinforcement plates for reinforcing the heating coils.

[0018] Furthermore, the adjusting door includes a first cylinder installed on the upper surface of the drying kiln, the telescopic end of the first cylinder passes through the drying kiln and is fixedly connected to the protective door, guide beams are provided on both sides of the protective door, and guide grooves for sliding guide beams are provided on both sides of the inner cavity of the drying kiln.

[0019] Furthermore, the conveying device includes a supporting bottom frame for supporting the drying kiln, two groups of driving rollers and multiple groups of supporting rollers are arranged in the supporting bottom frame, and conveyor belts for conveying the green plates are arranged on the two groups of driving rollers and the multiple groups of supporting rollers.

[0020] The device for online automatic detection of moisture in green plate lead paste after surface drying proposed by the present invention has the following advantages over the prior art:

[0021] 1. The present invention cooperates with a drying kiln, a dry and wet temperature sensor, cotton gauze and a controller. The program setting in the controller can convert relative humidity range information into moisture content information, and the dry and wet temperature sensor is used to detect moisture content and relative humidity data to find the applicable range. The controller controls the heating temperature of the adjustable heating device in the drying kiln. When the moisture content is low, the temperature in the drying kiln decreases. On the contrary, when the moisture content is high, the temperature in the drying kiln increases. The temperature in the drying kiln is regulated in real time, thereby realizing moisture detection of lead paste on green plates by detecting the relative humidity of the air at the end of the drying kiln, reducing manual operations and improving the consistency of surface dry moisture of green plates.

[0022] 2. The coordination among the conveying device, the regulating door and the adjustable heating device of the present invention facilitates the height regulation of the adjustable door and the height regulation of the adjustable heating device when the surface of the lead paste of multiple green plates is dried, thereby improving the efficiency of heating and drying the green plates in batches, realizing online automatic detection and control of the moisture content of the green plate lead paste, reducing manual operations, and improving production efficiency and product quality stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the drying kiln of the present invention;

[0025] Figure 3 This is a schematic structural diagram of the water inlet tank of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the adjustable heating device of the present invention;

[0027] Figure 5 It is a schematic structural diagram of the conveying device of the present invention;

[0028] Figure 6 for Figure 3 Schematic diagram of the structure enlarged at point A.

[0029] In the figure: 1. Conveying device; 101. Supporting bottom frame; 102. Driving roller; 103. Supporting roller; 104. Conveyor belt; 2. Drying kiln; 3. Controller; 4. Alarm; 5. Adjusting door; 51. First cylinder; 52. Protective door; 53. Guide beam; 6. Adjustable heating device; 61. Second cylinder; 62. Mounting plate; 63. Guide rod; 64. Reinforcement plate; 65. Heating coil; 7. Water supply tank; 8. Connecting pipe; 9. Water inlet tank; 10. Water inlet pipe; 11. Dry and wet temperature sensor; 12. Cotton gauze; 13. Float valve; 14. First heating component; 15. Second heating component; 16. Guide groove; 17. Connecting rod; 18. Liquid level sensor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] The present invention provides Figure 1-6The device shown is an online automatic detection device for the moisture content of green plate lead paste after surface drying, comprising:

[0032] A conveying device 1, and a drying kiln 2 installed above the conveying device 1, a controller 3 is provided on one side of the drying kiln 2, and an adjustable heating device 6 is provided on the top of the inner cavity of the drying kiln 2;

[0033] A water supply box 7 is provided at the discharge end of the drying kiln 2. A dry and wet temperature sensor 11 is provided on the water supply box 7. A cotton gauze 12 is provided on the dry and wet temperature sensor 11. A through hole for the cotton gauze 12 to pass through is opened on the upper surface of the water supply box 7. Both ends of the cotton gauze 12 are immersed in the water in the water supply box 7. A water inlet tank 9 is provided on the upper surface of the drying kiln 2. A connecting pipe 8 is provided between the water inlet tank 9 and the water supply box 7. A float valve 13 is provided in the water inlet tank 9.

[0034] An alarm 4 is provided at the upper end of one side of the drying kiln 2. The alarm 4 and the dry and wet temperature sensor 11 are electrically connected to the controller 3. The adjustable heating device 6 is electrically connected to the controller 3.

[0035] Specifically, the relative humidity range information can be converted into moisture content information through the program setting in the controller 3, and the controller 3 can be used to edit the range of the corresponding relationship between the relative humidity and the moisture content in the drying kiln 2. At the same time, the controller 3 can store the corresponding moisture content and temperature values for data query and traceability. According to the moisture content setting range, the adjustable heating device 6 on the drying kiln 2 is controlled to start or stop, so as to increase or decrease the temperature;

[0036] The setting range can be input or modified through the touch screen on the controller 3, and the touch screen display interface can display the moisture content and surface drying kiln 2 temperature data.

[0037] A water inlet pipe 10 is provided on one side of the water inlet tank 9, and the valve seat of the float valve 13 is installed at the upper end of the connecting pipe 8. A liquid level sensor 18 electrically connected to the controller 3 is provided in the inner cavity of the water supply tank 7. The liquid level sensor 18 is used to conveniently monitor the water level in the water supply tank 7, so that when the water level is lower than the preset value, the float valve 13 opens to replenish water in the water supply tank 7, thereby realizing automatic water supply.

[0038] The upper surface of the water supply box 7 is provided with multiple sets of connecting rods 17, and the multiple sets of connecting rods 17 are fixedly connected to the top of the inner cavity of the drying kiln 2. The multiple sets of connecting rods 17 are used to improve the stability of the water supply box 7 installed in the drying kiln 2, thereby ensuring the stability of the humidity regulation in the drying kiln 2.

[0039] The cotton gauze 12 is arranged in multiple layers and mainly consists of 3 - 5 layers of cotton yarn nets. The length of the cotton gauze 12 is 90 - 110 mm. The cotton gauze 12 can lead out the water in the water supply tank 7, thus facilitating the increase of the humidity in the drying kiln 2. And the cotton gauze 12 immersed in water replenishes water to the cotton gauze 12 exposed in the drying kiln 2.

[0040] On both sides of the inner cavity of the drying kiln 2, a first heating component 14 and a second heating component 15 are arranged in sequence from bottom to top. Adjusting doors 5 are arranged at both the feeding end and the discharging end of the drying kiln 2. Both the first heating component 14 and the second heating component 15 include vertical plates and multiple groups of heating tubes, and the multiple groups of heating tubes are arranged at equal intervals, which can ensure the uniform temperature in the drying kiln 2, thus improving the uniformity of drying the surface of the lead paste on the green plates.

[0041] The adjustable heating device 6 includes two second cylinders 61 installed on the upper surface of the drying kiln 2. The telescopic ends of the two second cylinders 61 penetrate through the drying kiln 2 and are fixedly connected with a mounting plate 62. A heating coil 65 is arranged on the lower surface of the mounting plate 62, and the heating coil 65 is arranged in a serpentine shape. The second cylinder 61 is used to conveniently adjust the height of the mounting plate 62, so as to conveniently adjust the height of the heating coil 65 according to the height of the stacked green plates, enabling the lead paste on the green plates to be uniformly heated and dried, and improving the drying effect of the lead paste on the green plates.

[0042] Multiple guide rods 63 are arranged on the upper surface of the mounting plate 62, and the upper ends of the multiple guide rods 63 all penetrate above the drying kiln 2. Multiple reinforcing plates 64 for reinforcing the heating coil 65 are arranged on the lower surface of the mounting plate 62. The reinforcing plates 64 can improve the stability of the heating coil 65 installed on the mounting plate 62, thus prolonging the service life of the adjustable heating device 6. And the mounting plate 62 is arranged in a '冂' shape, which facilitates the installation of the heating coil 65 and reduces the space occupied by the adjustable heating device 6 in the drying kiln 2.

[0043] The adjusting door 5 includes a first cylinder 51 installed on the upper surface of the drying kiln 2. The telescopic end of the first cylinder 51 penetrates through the drying kiln 2 and is fixedly connected with a protective door 52. Guide beams 53 are arranged on both sides of the protective door 52, and guide grooves 16 for the guide beams 53 to slide are respectively opened on both sides of the inner cavity of the drying kiln 2. The first cylinder 51 is used to conveniently adjust the opening degree of the protective door 52, so as to facilitate the stacking of green plates to be sent into the drying kiln 2. At the same time, multiple green plates are placed on the conveyor belt 104 through brackets. The brackets are prior art and will not be elaborated here.

[0044] The conveying device 1 includes a supporting bottom frame 101 for supporting the drying kiln 2. Two groups of driving rollers 102 and multiple groups of supporting rollers 103 are arranged in the supporting bottom frame 101. Conveyor belts 104 for conveying green plates are arranged on the two groups of driving rollers 102 and the multiple groups of supporting rollers 103. The lead-acid battery plates are filled with lead paste and placed on the conveyor belt 104 so that the conveyor belt 104 can convey the green plates to the drying kiln 2. The green plates can also be stacked and sent into the drying kiln 2 to improve the efficiency of drying the green plates.

[0045] Specifically, when in use, the green plates are transported to the drying kiln 2 for drying through the conveying device 1, and the controller 3 controls the first heating component 14 and the second heating component 15 to dry the green plates during transportation. At the same time, the second cylinder 61 controls the mounting plate 62 to descend close to the green plates, so as to evenly dry the green plates during transportation and improve the effect of drying the green plates. At the same time, the dry and wet temperature sensor 11 is used to detect the temperature and humidity environment in the drying kiln 2 in real time. By detecting the relative humidity of the air at the end of the drying kiln 2, the moisture content of the green plate lead paste is indirectly measured. The dry and wet temperature sensor 11 transmits the detected humidity data to the controller 3. The controller 3 automatically adjusts the temperature of the first heating component 14, the second heating component 15 and the adjustable heating device 6 according to the preset moisture content range.

[0046] The setting range can be input or modified through the touch screen. If the detected moisture content exceeds the set range, the controller 3 will adjust the temperature of the heating coil 65 to increase. Conversely, if the detected moisture content is lower than the set range, the controller 3 will adjust the temperature of the heating coil 65 to decrease. When the detected moisture content exceeds the upper and lower limits, the controller 3 will trigger the alarm 4, emit an audible and visual alarm, and prompt the operator to intervene, thereby ensuring that the moisture content of the green plate lead paste meets the requirements. It can follow up in real time the temperature and humidity changes in the drying kiln 2 to control the temperature of the first heating component 14, the second heating component 15 and the adjustable heating device 6, thereby improving the production yield of the green plate.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for automatically detecting the moisture content of green plate lead paste after surface drying, characterized in that: include: A conveying device (1), and a drying kiln (2) installed above the conveying device (1), a controller (3) being provided on one side of the drying kiln (2), and an adjustable heating device (6) being provided on the top of the inner cavity of the drying kiln (2); The discharge end of the drying kiln (2) is provided with a water supply box (7), a dry and wet temperature sensor (11) is provided on the water supply box (7), and a cotton gauze (12) is provided on the dry and wet temperature sensor (11). The upper surface of the water supply box (7) is provided with a through hole for the cotton gauze (12) to pass through, and both ends of the cotton gauze (12) are immersed in the water of the water supply box (7). The upper surface of the drying kiln (2) is provided with a water inlet tank (9), a connecting pipe (8) is provided between the water inlet tank (9) and the water supply box (7), and a float valve (13) is provided in the water inlet tank (9).

2. The device for automatically detecting moisture in surface-dried green plate lead paste online according to claim 1, characterized in that: An alarm (4) is provided at the upper end of one side of the drying kiln (2); the alarm (4) and the dry and wet temperature sensor (11) are both electrically connected to the controller (3); and the adjustable heating device (6) is electrically connected to the controller (3).

3. The device for automatically detecting moisture in surface-dried green plate lead paste online according to claim 2, characterized in that: A water inlet pipe (10) is provided on one side of the water inlet tank (9), a valve seat of the float valve (13) is installed on the upper end of the connecting pipe (8), and a liquid level sensor (18) electrically connected to the controller (3) is provided in the inner cavity of the water supply tank (7).

4. The device for automatically detecting moisture in surface-dried green plate lead paste online according to claim 3, characterized in that: The upper surface of the water supply box (7) is provided with multiple groups of connecting rods (17), and the multiple groups of connecting rods (17) are fixedly connected to the top of the inner cavity of the drying kiln (2).

5. The device for automatically detecting moisture in surface-dried green plate lead paste online according to claim 4, characterized in that: The cotton gauze (12) is arranged in multiple layers, and the cotton gauze (12) is mainly composed of 3-5 layers of cotton gauze nets. The length of the cotton gauze (12) is 90-110 mm.

6. The device for automatically detecting moisture in surface-dried green plate lead paste online according to claim 5, characterized in that: A first heating assembly (14) and a second heating assembly (15) are sequentially arranged on both sides of the inner cavity of the drying kiln (2) from bottom to top, and an adjusting door (5) is provided at both the feeding end and the discharging end of the drying kiln (2).

7. The device for automatically detecting moisture in surface-dried green plate lead paste online according to claim 6, characterized in that: The adjustable heating device (6) comprises two groups of second cylinders (61) mounted on the upper surface of the drying kiln (2), the telescopic ends of the two groups of second cylinders (61) both pass through the drying kiln (2) and are fixedly connected to a mounting plate (62), and a heating coil (65) is provided on the lower surface of the mounting plate (62), and the heating coil (65) is arranged in a serpentine shape.

8. The device for automatically detecting moisture in surface-dried green plate lead paste online according to claim 7, characterized in that: The upper surface of the mounting plate (62) is provided with a plurality of guide rods (63), the upper ends of the plurality of guide rods (63) all pass through the top of the drying kiln (2), and the lower surface of the mounting plate (62) is provided with a plurality of reinforcement plates (64) for reinforcing the heating coil (65).

9. The device for automatically detecting moisture in surface-dried green plate lead paste online according to claim 8, characterized in that: The regulating door (5) comprises a first cylinder (51) mounted on the upper surface of the drying kiln (2); the telescopic end of the first cylinder (51) passes through the drying kiln (2) and is fixedly connected to a protective door (52); guide beams (53) are provided on both sides of the protective door (52); and guide grooves (16) for sliding the guide beams (53) are provided on both sides of the inner cavity of the drying kiln (2).

10. The device for automatically detecting moisture in surface-dried green plate lead paste online according to claim 1, characterized in that: The conveying device (1) comprises a supporting bottom frame (101) for supporting a drying kiln (2); two groups of driving rollers (102) and multiple groups of supporting rollers (103) are arranged in the supporting bottom frame (101); and conveyor belts (104) for conveying green plates are arranged on the two groups of driving rollers (102) and the multiple groups of supporting rollers (103).

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