Rapid detection device for water content of lead plaster

Abstract

The utility model discloses a rapid detection device for the water content of lead plaster, which comprises a shell, a lead plaster bin is arranged on the inner side of the shell, a sliding hole is formed in the top of the shell, and groove holes penetrating through the lead plaster bin are horizontally formed in the edges of the bottoms of the two sides of the shell; the lead plaster gland is vertically and movably connected into the lead plaster bin, a handle assembly is connected to the lead plaster gland, and the handle assembly penetrates through the sliding hole and extends to the outer side of the shell; the two groups of test electrodes are connected in the corresponding slotted holes in a sliding manner, and electrode tips of the test electrodes are in contact with the lead plaster in the lead plaster bin; the electric control table is fixed to the bottom of the shell, the electric control table is electrically connected with the testing electrode, a resistance module is arranged on the electric control table, the electric control table can be connected with an external power source and a voltage measuring device, the voltage measuring device is used for measuring the voltage of the resistance module, and the lead paste water content measuring device is simple in structure and convenient to continuously and rapidly measure the water content of lead paste.

Description

Technical Field

[0001] This utility model belongs to the technical field of lead-acid battery testing equipment, specifically relating to a rapid testing device for the water content of lead paste. Background Technology

[0002] Lead paste is one of the important factors affecting the performance of lead-acid batteries. During the mixing process of lead paste, the higher the water content, the lower the resistance and the higher the mixing efficiency. Although the water content of lead paste is not directly related to the form of lead paste during the coating process, it is closely related to the acid content of lead paste. The acid content of lead paste affects the form of lead paste and thus affects the bonding effect between lead paste and grid during the coating process.

[0003] The lower the moisture content in the lead-acid battery plates, the faster the oxygen diffuses, which promotes the reaction of free acid. The moisture content of the lead paste also directly affects the curing reaction rate of the lead-acid battery. Different curing processes are typically used depending on the moisture content. The curing reaction is a crucial step in the lead-acid battery manufacturing process, determining the formation of the internal structure of the plates and their electrical performance. Improper moisture content control during curing can lead to a loose or insufficiently dense structure of the active material, thereby affecting the battery's capacity and cycle life. Therefore, the detection and control of moisture content is essential in the production of lead-acid battery lead paste.

[0004] In the field of lead-acid battery manufacturing, the rapid weight loss method is usually used to determine the moisture content of lead paste. This method can accurately determine the moisture content of lead paste, but the testing time is long and it is not possible to continuously test, so it is not possible to provide timely guidance for battery production on site.

[0005] Chinese patent CN2096064 U discloses a moisture analyzer that measures moisture by evaporation and weighing the residue. Its key feature is the design of a rotary control section and a longitudinal movement control section, combining a microwave oven and an electronic balance, allowing for the simultaneous measurement of multiple samples.

[0006] Common methods for testing moisture content include thermal drying, humidity sensor methods, rapid weight loss methods, neutron detection methods, infrared spectroscopy, capacitance methods, and conductivity methods. While the aforementioned patents provide some reference value for measuring the moisture content of lead paste, conductivity measurement offers advantages over other methods in terms of short detection time, lack of need for large instruments, and low cost, making it convenient, accurate, and rapid for measuring the moisture content of lead paste. Therefore, this patent employs conductivity measurement to measure the moisture content of lead paste.

[0007] Therefore, how to provide a rapid detection device for the moisture content of lead paste based on conductivity measurement is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0008] In view of this, the present invention provides a rapid detection device for the moisture content of lead paste, which can quickly detect the moisture in lead paste and also achieve the purpose of rapid and continuous measurement of the moisture content of lead paste in different production states during the coating process.

[0009] To achieve the above objectives, this utility model adopts the following technical solution: a rapid detection device for the moisture content of lead paste, comprising:

[0010] The housing has a lead paste container on its inner side, a sliding hole on the top of the housing, and horizontal slots through the lead paste container on both bottom edges of the housing.

[0011] A lead paste cap is movably connected to the lead paste container. A handle assembly is connected to the lead paste cap and extends through the sliding hole to the outside of the housing.

[0012] The test electrode has two sets and is slidably connected in the corresponding slots. The electrode head of the test electrode is in contact with the lead paste in the lead paste container.

[0013] An electrical control unit is fixed to the bottom of the housing and is electrically connected to the test electrode. The electrical control unit is equipped with a resistance module and can be connected to an external power supply and voltage measuring device. The voltage measuring device is used to measure the voltage of the resistance module.

[0014] The beneficial effects of this utility model are as follows: The lead paste cap is used to press the lead paste tightly. The test electrode contacts the lead paste and establishes a circuit in conjunction with the control panel. After obtaining the voltage value of the internal resistance module of the control panel, the current in the series circuit is calculated. According to the voltage division principle of the series circuit, the voltage at the test sample (lead paste) is obtained. The resistance of the test sample is thus calculated. There is a certain functional relationship between the moisture content of the solid medium and its resistance. In specific implementation, the standard curve between moisture content and resistance is first obtained using a standard sample. Then, it is used as a data reference to obtain the moisture content at the corresponding resistance value. This device can quickly and continuously detect and is easy to use.

[0015] Preferably, the lead paste container has a cylindrical structure, the bottom edge of the inner sidewall of the lead paste container is provided with a threaded section, the outer sidewall of the lead paste cap is provided with a connecting thread, the connecting thread is connected to the threaded section, and an engraving groove indicator line is provided on the inner sidewall of the lead paste container and below the corresponding threaded section.

[0016] The resulting technical effect is that the cylindrical lead paste container is easy to use with the lead paste cap for rotation. It is understood that the threaded section is not completely located at the bottom of the lead paste container, but a certain distance is reserved. The surface of this section is sprayed with insulating and smooth coating to ensure the rapid removal of lead paste and to ensure safety when energized. This is for the purpose of easy scraping of lead paste in this area during the experiment. The engraved groove indicator line can indicate in advance that the amount of lead paste meets the test requirements.

[0017] Preferably, the handle assembly includes a connecting rod and an operating handle. One end of the connecting rod is fixedly connected to the lead paste cap, and the other end passes through the sliding hole and is fixedly connected to the operating handle outside the housing. The outer side wall of the connecting rod is provided with scale lines.

[0018] The resulting technical effect is that the connecting rod is used to transmit the torque of the operating handle and control the rotation, raising and lowering of the lead paste cap. On the other hand, the scale lines on it can precisely control the position of the lead paste cap. By rotating the lead paste cap, the lead paste being measured can be compacted conveniently and quickly, so as to ensure that the form of the lead paste is as uniform as possible during measurement, thereby ensuring the accuracy of subsequent measurement results.

[0019] Preferably, the housing is provided with a hidden wire channel, one end of which is connected to the inner wall of the slot, and the connecting wire of the test electrode is connected to the control panel through the wire channel.

[0020] The resulting technical effect is that the wire trough provides a foundation for burying the wires, thereby enabling the connection of the test electrodes, the test sample, and the control console.

[0021] Preferably, the main body of the test electrode is a hollow structure, and an electrode head for conducting electricity is connected to the end of the test electrode. A torsion spring wire winch is rotatably connected inside the main body of the test electrode, and the connecting wire on the electrode head is fed into the wire groove after passing through the torsion spring wire winch.

[0022] The resulting technical effects are: the movement of the test electrode is to get closer to the test sample, and it is also convenient to measure the water content of plates of different shapes and sizes. The torsion spring wire winch can ensure that the test electrode, which is locked in parallel sliding, can be stably pulled out and retracted during the sliding process. It is understandable that the wires in the wire groove and the wires between the torsion spring wire winch will not be messy.

[0023] Preferably, the control panel is provided with a voltage measuring device connection socket and a power supply wiring hole, and the control panel is provided with a sliding resistor button, which is used to select the resistance value of the connected line.

[0024] The resulting technical effect is that the power connection hole on the control panel connects to an external power source, and the sliding resistor button is used to change the resistor module connected to the circuit, thereby using different resistance values ​​to make the voltage measuring device read the appropriate value (preferably half of the total power supply voltage). By recording the voltage data and substituting it into the formula, the moisture content of the lead paste measured can be obtained.

[0025] Preferably, the inner wall of the slot is provided with multiple slots at intervals, and the test electrode has a sliding block that engages in the slot and restricts the position of the test electrode in the slot.

[0026] The resulting technical effect is that the test electrode can be slidably positioned within the slot to enable the testing of lead paste of different specifications. Attached Figure Description

[0027] Figure 1 This is an overall structural diagram of a rapid detection device for the moisture content of lead paste according to this utility model;

[0028] Figure 2 This is a structural diagram of the test electrode of a rapid detection device for the moisture content of lead paste according to this utility model;

[0029] Figure 3 This is a schematic diagram of the sliding locking of the test electrode in a rapid detection device for the moisture content of lead paste according to this utility model.

[0030] 1. Housing, 2. Lead paste container, 3. Lead paste cap, 4. Handle assembly, 41. Connecting rod, 42. Operating handle, 5. Test electrode, 51. Electrode head, 52. Torsion spring wire winch, 53. Insulation layer, 54. Outer shell, 6. Control panel, 7. Wire trough, 8. Connecting wire, 9. Voltage measuring device connection socket, 10. Power wiring hole, 11. Sliding resistor button. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] See appendix to this utility model Figures 1 to 3 According to an embodiment of the present invention, a rapid detection device for the moisture content of lead paste includes:

[0033] The housing 1 has a lead paste container 2 inside. In specific implementation, the housing can be a split structure to facilitate the loading and unloading of the lead paste cap. The housing is a heat-insulating structure to ensure the temperature inside the lead paste container is stable and to avoid detection errors caused by temperature. The top of the housing 1 has a sliding hole, and the bottom edges on both sides of the housing 1 have horizontal slots that pass through the lead paste container 2, which provides the prerequisite for the installation of the test electrode.

[0034] Lead paste cap 3 is movably connected to lead paste container 2. A handle assembly 4 is connected to the lead paste cap 3. The handle assembly 4 extends through the sliding hole to the outside of the housing 1.

[0035] Test electrode 5, there are two sets of test electrodes, which are slidably positioned and connected in corresponding slots. That is to say, the test electrode can be locked in position after sliding to a certain position, see appendix. Figure 3 The electrode head 51 of the test electrode 5 contacts the lead paste in the lead paste container 2 to ensure the continuity of the subsequent circuit.

[0036] The control console 6 is fixed to the bottom of the housing 1 and is electrically connected to the electrode head of the test electrode 5. The control console 6 is equipped with a resistance module and can be connected to an external power supply and voltage measuring device. The voltage measuring device measures the voltage of the resistance module, which provides different resistance values. By adjusting the resistance value in the connected circuit, the voltage measurement value of the voltage measuring device is kept as stable as possible. The voltage reading is adjusted to a suitable value (ideally half of the total power supply voltage). The recorded voltage data is then substituted into a formula to determine the moisture content of the lead paste measured.

[0037] The underlying principle is that there is a certain functional relationship between the water content of a solid medium and its resistance. Different media have different water contents, and their resistance (resistivity) will have certain differences.

[0038] The voltage across a known load resistor is measured with a voltmeter, the current in the series circuit is calculated, and the voltage at the test sample is obtained based on the voltage division principle of a series circuit. The resistance of the test sample is then calculated in this way.

[0039] The relationship between the moisture content and resistivity of the sample is expressed mathematically as follows:

[0040] When the moisture content is low: g=g0+k1lgW

[0041] g is the measured resistance; g0 is the initial resistance; k1 is the slope (actual measurement); W is the moisture content of the solid material. When the moisture content is high: lg g = lg g0 + k2lgW

[0042] g is the measured resistance; g0 is the initial resistance; K2 is the slope (actual measurement); W is the moisture content of the solid material.

[0043] In other embodiments, the lead paste container 2 is a cylindrical structure. The bottom edge of the inner sidewall of the lead paste container 2 is provided with a threaded section. The outer sidewall of the lead paste cap 3 is provided with a connecting thread, which is connected to the threaded section. An engraved groove indicator line is provided on the inner sidewall of the lead paste container 2 and below the corresponding threaded section. This is an indicator line for the amount of lead paste added each time.

[0044] In some other specific embodiments, the handle assembly 4 includes a connecting rod 41 and an operating handle 42, both of which are made of insulating material. One end of the connecting rod 41 is fixedly connected to the lead paste cap 3, and the other end passes through a sliding hole and is fixedly connected to the operating handle 42 outside the housing. The outer side wall of the connecting rod 41 is provided with scale lines to facilitate the uniformity of the amount of lead paste for each test, so as to ensure the accuracy of the test results.

[0045] In some other embodiments, the housing 1 is provided with a hidden wire groove 7, one end of which is connected to the inner wall of the groove hole, and the connecting wire 8 of the test electrode 5 is connected to the control panel 6 through the wire groove 7.

[0046] Cable trays provide a foundation for connecting and burying cables, facilitating cable layout.

[0047] In some other specific embodiments, the main body of the test electrode 5 is a hollow structure, and the end of the test electrode 5 is connected to an electrode head 51 for conducting electricity. A torsion spring wire winch 52 is rotatably connected inside the main body of the test electrode 5, and the connecting wire on the electrode head 51 is fed into the wire groove 7 after passing through the torsion spring wire winch 52.

[0048] The sliding rotation locking structure of the sliding electrode is shown in the attached figure. Figure 3 As shown, when rotated to the push-pull state, the electrode can slide back and forth through the protruding sliding block. When the electrode is rotated upward to enter the locked state, the protruding sliding block enters the locking groove of the housing, and the sliding electrode is locked and cannot move back and forth.

[0049] Understandably, the torsion spring wire winch can ensure that the test electrode with parallel sliding lock can be stably pulled out and retracted during the sliding process, and ensure the orderly connection between the torsion spring wire winch and the wire trough.

[0050] In some other embodiments, the control panel 6 is provided with a voltage measuring device connection socket 9 and a power supply wiring hole 10. The control panel 6 is also provided with a sliding resistor button 11, which is used to select the resistance value of the connected line. The resistor module with a sliding resistance value can select the resistance value according to the scale to complete the measurement of the moisture content of lead paste with a suitable voltage distribution.

[0051] The parallel sliding and locking test electrode consists of four parts: an electrode housing 54, an electrode head 51, a connecting wire 8, and a torsion spring wire winch 52. The electrode housing is equipped with sliding rollers for parallel sliding to bring it close to the lead paste being tested. The electrode head 51 is made of acid-resistant material, possessing good conductivity and durability for prolonged contact with the lead paste. To reduce electrochemical polarization during current flow and increase measurement accuracy, the electrode head is polished smooth and sealed with phosphoric acid. The connecting wire connects the electrode head, control panel, and lead paste to form a circuit. The torsion spring wire winch ensures stable wire extension and retraction during the sliding and locking process. The connection module for the power supply and voltage testing device is a pre-reserved power wiring hole 10. A sliding resistor module allows selection of resistance values ​​according to the scale to achieve appropriate voltage distribution for measuring the moisture content of the lead paste.

[0052] This device has a simple testing principle, a simple structure, and is easy to carry. The sliding test electrode can measure the moisture content of lead paste as well as the moisture content of the electrode plate.

[0053] The apparatus and methods disclosed in the embodiments are described simply because they correspond to the methods disclosed in the embodiments. For relevant details, please refer to the method section.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for rapid detection of water content of lead paste, characterized in that, Include: The shell (1), the inner side of the shell (1) is provided with lead paste warehouse (2), the top of the shell (1) is provided with slide hole, the bottom edge of both sides of the shell (1) is horizontally provided with through lead paste warehouse (2) slot hole; Lead paste gland (3), the lead paste gland (3) is movably connected in the lead paste warehouse (2), the lead paste gland (3) is connected with handle assembly (4), handle assembly (4) extends to the outside of the shell (1) through the slide hole; Test electrode (5), the test electrode (5) has two groups and is slidably connected in the corresponding slot hole, the electrode head (51) of the test electrode (5) is in contact with the lead paste in the lead paste warehouse (2); Electric control platform (6), the electric control platform (6) is fixed on the bottom of the shell (1), the electric control platform (6) is electrically connected with the electrode head of the test electrode (5), the electric control platform (6) is provided with resistance module, the electric control platform (6) can be connected with external power supply and voltage measuring device, the voltage measuring device is used for measuring the voltage of resistance module.

2. The device for rapid detection of water content of lead paste according to claim 1, characterized in that, The lead paste warehouse (2) is a cylindrical structure, the inner side wall bottom edge of the lead paste warehouse (2) is provided with a threaded section, the outer side wall of the lead paste gland (3) is provided with a connecting thread, the connecting thread is connected with the threaded section, the inner side wall of the lead paste warehouse (2) and below the corresponding threaded section is provided with an engraved groove indicating line.

3. The device for rapid detection of water content of lead paste according to claim 1, characterized in that, The handle assembly (4) includes a connecting rod (41) and an operating handle (42), one end of the connecting rod (41) is fixedly connected with the lead paste gland (3), the other end is fixedly connected with the operating handle (42) outside the shell through the slide hole, the outer side wall of the connecting rod (41) is provided with a scale line.

4. The device for rapid detection of water content of lead paste according to claim 1, characterized in that, The shell (1) is provided with a hidden wire slot (7), one end of the wire slot (7) is communicated with the inner side wall of the slot hole, the connecting line (8) of the test electrode (5) is connected with the electric control platform (6) through the wire slot (7).

5. The apparatus for rapid detection of water content of lead paste according to claim 4, characterized in that, The main body of the test electrode (5) is a hollow structure, the end of the test electrode (5) is connected with the electrode head (51) for conducting electricity, the main body of the test electrode (5) is rotatably connected with a torsion spring wire capstan (52), the connecting line on the electrode head (51) is sent into the wire slot (7) through the torsion spring wire capstan (52).

6. The device for rapid detection of water content of lead paste according to claim 1, characterized in that, The electric control platform (6) is provided with voltage measuring device connecting jack (9) and power supply wiring hole (10), the electric control platform (6) is provided with sliding resistance button (11), the sliding resistance button (11) is used for selecting the resistance value of the access line.

7. The device for rapid detection of water content of lead paste according to claim 1, characterized in that, The inner wall of the slot hole is provided with a plurality of slot positions at intervals, the test electrode (5) is provided with a sliding block, the sliding block is clamped in the slot position and limits the position of the test electrode in the slot hole.

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