A negative pressure lead paste preparation device

Abstract

The utility model discloses a negative pressure lead paste preparation device, which relates to the technical field of lead-acid battery plate preparation. The utility model includes a stirring pot body, a negative pressure station, a dilute sulfuric acid barrel, a lead powder barrel, a pure water barrel and a premixing stirring mechanism. The negative pressure station is used to maintain a negative pressure state in the stirring pot body; a temperature sensor is installed at the connection between the stirring pot body and the negative pressure station pipeline; the dilute sulfuric acid barrel is used to inject dilute sulfuric acid into the stirring pot body; the lead powder barrel is used to inject lead powder into the stirring pot body; the pure water barrel is used to inject pure water into the stirring pot body; and the premixing stirring mechanism is used to premix and stir auxiliary materials. The utility model adds a premixing stirring mechanism to the stirring pot body, and various auxiliary materials can be mixed before the paste operation, thereby improving the consistency of the lead paste. In addition, a negative pressure station and a temperature sensor are provided, and the negative pressure is automatically adjusted according to the lead paste temperature in the pot during the paste acidification process, ensuring that the actual lead paste temperature is further controllable, thereby greatly improving the consistency of the finished lead paste product.

Description

Technical Field

[0001] The utility model belongs to the technical field of lead-acid battery plate preparation, in particular to a negative pressure lead paste preparation device. Background Art

[0002] The preparation of lead paste is a critical process in the production of lead-acid batteries. It is a paste made by mixing (stirring) lead powder, pure water, dilute sulfuric acid solution, and various additives. The important purpose of the paste preparation process is to mix various materials evenly and have a suitable phase composition to ensure that the battery has high capacity and long life.

[0003] In order to improve and enhance the performance of batteries, additives are often added to the lead paste formula. Additives are generally divided into conductive additives, non-conductive additives, chemically active additives, etc. Usually, the amount of additives is relatively small, and some are only a few thousandths of the total amount of lead powder. In order to ensure the consistency and stability of the battery lead paste characteristics, various additives need to be evenly dispersed in the lead powder base material, so the uniform dispersion of the lead powder base material and additives in the paste making process is very important.

[0004] At present, the conventional lead paste preparation equipment at normal pressure is used for mixing the paste: first add a certain amount of lead powder into the material barrel of the paste machine, then add all the unpremixed additives into the material barrel of the paste machine at one time, turn on the stirring device of the material barrel of the paste machine for 5 to 10 minutes of dry mixing, and finally add water and dilute sulfuric acid for stirring and mixing, and then produce the paste smear. A preparation cycle is about 50 minutes, and in the process of preparing the lead paste, a large amount of heat is generated due to the violent reaction between sulfuric acid and lead powder, and the heat cannot be completely eliminated under the existing normal pressure, and the temperature in the lead pot is different, which affects the consistency of the lead paste. And because the current method of adding ingredients to the paste machine is to place the auxiliary ingredients together in the lead pot before mixing the paste, without mixing them in advance, and then add the lead powder acid water for stirring, the overall consistency of the lead paste is further poor, which affects the consistency and stability of battery performance. Utility Model Content

[0005] The utility model aims to provide a negative pressure lead paste preparation device. By adding a premixing and stirring mechanism to a stirring pot body, various auxiliary materials can be mixed before the paste operation, thereby improving the consistency of the lead paste. A negative pressure station is arranged on one side of the stirring pot body, and a temperature sensor is arranged to detect the temperature of the stirring pot body. During the acid addition process of the paste, the negative pressure is automatically adjusted according to the lead paste temperature in the pot, thereby ensuring that the actual lead paste temperature is further controllable, so as to further improve the consistency of the lead paste and solve the problem of poor consistency of the lead paste produced by the existing paste mixing method.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a negative pressure lead paste preparation device, comprising a stirring pot body and

[0008] A negative pressure station is connected to the stirring pot body through a pipeline, and is used to maintain a negative pressure state inside the stirring pot body; a temperature sensor is installed at the connection between the stirring pot body and the pipeline of the negative pressure station;

[0009] A dilute sulfuric acid barrel is installed on the stirring pot body and is used to inject dilute sulfuric acid into the stirring pot body;

[0010] A lead powder bucket is installed on the stirring pot body and is used to inject lead powder into the stirring pot body;

[0011] A pure water bucket is installed on the stirring pot body and is used to inject pure water into the stirring pot body;

[0012] The premixing and stirring mechanism is installed on the stirring pot body and is used for premixing and stirring the auxiliary materials.

[0013] As a preferred technical solution of the utility model, the premixing stirring mechanism includes a stirring barrel, a stirring rod, a stirring blade and a driving motor. The stirring barrel is fixedly installed above the stirring pot body, and an openable and closable feeding port is provided at the bottom of the stirring barrel; one end of the stirring rod is transmission-connected to the driving motor, and the other end of the stirring rod is fixedly connected to the stirring blade and extends into the stirring barrel.

[0014] As a preferred technical solution of the utility model, the premixing and stirring mechanism also includes a bracket, a toothed disc, a planetary gear and a connecting rod. The bracket is mounted above the stirring barrel, the toothed disc is fixed on the bracket, the planetary gear is fixed on the end of the stirring rod away from the stirring blade, and the planetary gear is meshed with the toothed disc. The driving motor is fixedly mounted on the bracket, the output shaft of the driving motor is coaxially arranged with the toothed disc, one end of the connecting rod is fixedly connected to the output shaft of the driving motor, and the other end of the connecting rod is rotatably matched with the stirring rod to drive the planetary gear to rotate and revolve around the toothed disc.

[0015] As a preferred technical solution of the utility model, a ball pair is provided in the middle of the stirring rod, and the ball pair is fixed on the bracket to improve the stability of the stirring rod driving the stirring blade to rotate.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model adds a premixing and stirring mechanism to the stirring pot body. Before the paste operation, auxiliary materials such as red lead are added into the premixing barrel for stirring and mixing. After the formal paste is formed, they are added into the main pot synchronously with the lead powder for mixing and stirring, so that the consistency of the lead paste is high. A negative pressure station is arranged on one side of the stirring pot body, and a temperature sensor is arranged at the connection between the stirring pot body and the negative pressure station. When the dry stirring of the paste begins, the pressure in the main lead pot is controlled in a negative pressure state. During the acid addition process of the paste, the negative pressure is automatically adjusted according to the temperature of the lead paste in the pot, so as to ensure that the actual temperature of the lead paste is further controllable, thereby greatly improving the consistency of the lead paste.

[0018] 2. The premixing and stirring mechanism of the utility model adopts a driving motor to drive the planetary gear to rotate around the toothed disk, so that the stirring rod drives the stirring blade to rotate and revolve in the stirring barrel, thereby improving the premixing effect of the auxiliary materials.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of a negative pressure lead paste preparation device of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the premixing and stirring mechanism;

[0023] Figure 3 This is a structural schematic diagram of the premixing and stirring mechanism from another perspective.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 100-stirring pot, 200-negative pressure station, 300-dilute sulfuric acid barrel, 400-lead powder barrel, 500-pure water barrel, 600-premixing stirring mechanism, 700-temperature sensor;

[0026] 1-mixing barrel, 2-bracket, 3-toothed disc, 4-driving motor, 5-mixing rod, 6-mixing blade, 7-planetary gear, 8-connecting rod, 9-ball pair. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that terms such as "end", "upper", "lower", "side", "top", "bottom", "length", "inside", and "surface" indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present invention.

[0029] At present, the conventional lead paste preparation equipment at normal pressure is used for mixing the paste: first add a certain amount of lead powder into the material barrel of the paste machine, then add all kinds of additive materials that are not premixed into the material barrel of the paste machine at one time, turn on the stirring device of the material barrel of the paste machine for 5 to 10 minutes of dry mixing, and finally add water and dilute sulfuric acid for stirring and mixing, and then produce a paste smear. A preparation cycle is about 50 minutes, and in the process of lead paste preparation, sulfuric acid and lead powder react violently, generating a large amount of heat, and the heat cannot be completely eliminated under the existing normal pressure, and the temperature in the lead pot is different, which affects the consistency of the lead paste. And because the current method of adding ingredients to the paste machine is to place the auxiliary ingredients together in the lead pot before mixing the paste, without mixing them in advance, and then add lead powder acid water for stirring, which further leads to poor overall consistency of the lead paste, thereby affecting the consistency and stability of battery performance. Based on this, this embodiment provides a negative pressure lead paste preparation device.

[0030] See also Figure 1 As shown, the negative pressure lead paste preparation device includes a stirring pot body 100 and a negative pressure station 200, a dilute sulfuric acid barrel 300, a lead powder barrel 400, a pure water barrel 500 and a premixing stirring mechanism 600.

[0031] The negative pressure station 200 is connected to the stirring pot body 100 through a pipeline, which is used to maintain a negative pressure state of a certain pressure in the stirring pot body 100 during the paste mixing process, and a temperature sensor 700 is installed at the connection between the stirring pot body 100 and the pipeline of the negative pressure station 200.

[0032] The dilute sulfuric acid barrel 300 is installed above the stirring pot body 100 , and a valve is provided below the dilute sulfuric acid barrel 300 for injecting dilute sulfuric acid into the stirring pot body 100 .

[0033] The lead powder barrel 400 is installed above the stirring pot body 100 , and a valve is provided below the lead powder barrel 400 for injecting lead powder into the stirring pot body 100 .

[0034] The pure water barrel 500 is installed above the stirring pot body 100 , and a valve is also provided below the pure water barrel 500 for injecting pure water into the stirring pot body 100 .

[0035] The premixing and stirring mechanism 600 is installed on the stirring pot body 100 and is used for premixing and stirring the auxiliary materials.

[0036] During use, before the paste is made, auxiliary materials such as red lead are added to the premixing and stirring mechanism 600 for stirring and mixing. The negative pressure station 200 starts working, and the pressure in the stirring pot body 100 is controlled in a negative pressure state, and the overall negative pressure is controlled at -0.3 to 0.5 kpa. Subsequently, the paste is mixed, and the premixing and stirring mechanism 600 and the feeding port of the lead powder barrel 400 are opened synchronously, and the auxiliary materials and lead powder are added to the stirring pot body 100 synchronously for mixing and stirring for 5 to 10 minutes. Next, the dilute sulfuric acid barrel 300 and the pure water barrel 500 are opened to add a certain amount of water and dilute sulfuric acid to the stirring pot body 100 for stirring and mixing. During the acidification process of the paste, the negative pressure station 200 automatically adjusts the negative pressure according to the temperature of the lead paste in the pot to ensure that the actual lead paste temperature is controllable, thereby greatly improving the consistency of the produced lead paste.

[0037] In a preferred implementation of this embodiment, the structure of the premixing and stirring mechanism 600 is as follows: Figure 2 and Figure 3 As shown, the premixing and stirring mechanism 600 includes a stirring barrel 1, a bracket 2, a stirring rod 5, a stirring blade 6 and a driving motor 4. The stirring barrel 1 is fixedly mounted above the stirring pot body 100, and a feeding port that can be opened and closed is provided below the stirring barrel 1. The bracket 2 is mounted above the stirring barrel 1, and a toothed disc 3 is fixedly mounted on the top of the bracket 2. The driving motor 4 is fixedly mounted above the toothed disc 3, and the output shaft of the driving motor 4 is coaxially arranged with the toothed disc 3. A planetary gear 7 is fixed at one end of the stirring rod 5, and the other end of the stirring rod 5 is fixedly connected to the stirring blade 6 and extends into the stirring barrel 1. The driving motor 4 and the stirring rod 5 are fixedly connected by a connecting rod 8, one end of the connecting rod 8 is fixedly connected to the output shaft of the driving motor 4, and the other end of the connecting rod 8 is rotated with the stirring rod 5 to drive the planetary gear 7 to mesh with the toothed disc 3 and rotate and revolve around the toothed disc 3, so that the stirring rod 5 drives the stirring blade 6 to rotate and revolve in the stirring barrel 1, thereby improving the premixing effect of the auxiliary materials.

[0038] In addition, a ball pair 9 is provided in the middle of the stirring rod 5 , and the ball pair 9 is fixed on the bracket 2 to ensure the stability of the stirring rod 5 driving the stirring blade 6 to rotate.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A negative pressure lead paste preparation device, characterized in that: include: A stirring pot (100), and The negative pressure station (200) is connected to the stirring pot body (100) via a pipeline and is used to maintain a negative pressure state in the stirring pot body (100); a temperature sensor (700) is installed at the connection between the stirring pot body (100) and the pipeline of the negative pressure station (200); A dilute sulfuric acid barrel (300) is installed on the stirring pot body (100) and is used to inject dilute sulfuric acid into the stirring pot body (100); A lead powder bucket (400) is installed on the stirring pot body (100) and is used to inject lead powder into the stirring pot body (100); A pure water bucket (500) is installed on the stirring pot body (100) and is used to inject pure water into the stirring pot body (100); The premixing and stirring mechanism (600) is installed on the stirring pot body (100) and is used to premix and stir the auxiliary materials.

2. A negative pressure lead paste preparation device according to claim 1, characterized in that: The premixing stirring mechanism (600) comprises a stirring barrel (1), a stirring rod (5), a stirring blade (6) and a driving motor (4); the stirring barrel (1) is fixedly mounted above a stirring pot body (100); a closable feeding port is provided below the stirring barrel (1); one end of the stirring rod (5) is drivingly connected to the driving motor (4); the other end of the stirring rod (5) is fixedly connected to the stirring blade (6) and extends into the stirring barrel (1).

3. A negative pressure lead paste preparation device according to claim 2, characterized in that: The premixing and stirring mechanism (600) further comprises a support (2), a toothed disc (3), a planetary gear (7) and a connecting rod (8), wherein the support (2) is mounted above the stirring barrel (1), the toothed disc (3) is fixed on the support (2), the planetary gear (7) is fixed on an end of the stirring rod (5) away from the stirring blade (6), and the planetary gear (7) is meshed with the toothed disc (3); The drive motor (4) is fixedly mounted on the bracket (2); the output shaft of the drive motor (4) is coaxially arranged with the toothed disc (3); one end of the connecting rod (8) is fixedly connected to the output shaft of the drive motor (4); the other end of the connecting rod (8) is rotationally matched with the stirring rod (5) to drive the planetary gear (7) to rotate and revolve around the toothed disc (3).

4. A negative pressure lead paste preparation device according to claim 3, characterized in that: A ball pair (9) is provided in the middle of the stirring rod (5), and the ball pair (9) is fixed on the bracket (2).

Images