Twin-screw pulping equipment

Abstract

This utility model relates to the field of battery technology and discloses a twin-screw pulping device that can ensure the quality of the pulp and avoid pulp waste. The twin-screw pulping device includes a housing, a twin-screw stirring assembly, a drive module, and a signal acquisition module. The housing is used to contain the pulp and has an inlet and an outlet. The twin-screw stirring assembly is located inside the housing and includes two spaced-apart stirring screws arranged in parallel. The axial direction of the stirring screws is consistent with the arrangement direction of the inlet and outlet, and the stirring screws can rotate relative to the housing around their own axes. The drive module is located outside the housing, near the inlet, and drives the two stirring screws to rotate around their own axes. The signal acquisition module is located on the outer surface of the housing to detect the vibration frequency of the housing or the sound characteristics within the housing.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology and discloses a twin-screw pulping device. Background Technology

[0002] In the battery manufacturing process, a slurry needs to be coated onto the surface of the electrode. The preparation of the slurry requires a twin-screw extruder to mix the input slurry raw materials, thus forming the final slurry coated onto the electrode surface. However, with twin-screw extruders, during the slurry preparation process, the screws are prone to wear due to collisions with each other and with the cylinder wall, affecting the quality of the subsequently prepared slurry and resulting in slurry waste. Utility Model Content

[0003] To address the issue of pulp quality being affected by internal wear in twin-screw pulping equipment, this invention provides a twin-screw pulping device capable of detecting internal wear, facilitating timely maintenance, and preventing pulp quality degradation due to internal wear.

[0004] To achieve the above objectives, this utility model provides a twin-screw pulping device, including a shell, a twin-screw stirring assembly, a drive module, and a signal acquisition module;

[0005] The interior of the shell is used to contain the slurry, and the shell has an inlet and an outlet;

[0006] The twin-screw stirring assembly is disposed inside the housing. The twin-screw stirring assembly includes two stirring screws spaced apart and arranged in parallel. The axial direction of the stirring screws is consistent with the arrangement direction of the feed inlet and the discharge outlet, and the stirring screws can rotate relative to the housing around their own axis.

[0007] The drive module is located outside the housing and is positioned on the side near the feed inlet of the housing. The drive module is used to drive the two stirring screws to rotate around their own axes respectively.

[0008] The signal acquisition module is disposed on the outer surface of the housing to detect the vibration frequency of the housing or the sound characteristics inside the housing.

[0009] The aforementioned twin-screw pulping equipment has the following advantages or beneficial effects: By installing a signal acquisition module on the outer surface of the shell, the module can detect the vibration frequency of the shell or the sound characteristics inside the shell. When a collision occurs inside the shell, the vibration frequency or sound characteristics inside the shell will show a significant change compared to the normal operating state of the equipment. Therefore, the signal values ​​collected by the signal acquisition module can quickly and intuitively indicate whether a collision has occurred inside the shell. When a collision occurs, the equipment can be maintained promptly, thereby ensuring the quality of the pulp and avoiding pulp waste. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a twin-screw pulping device according to an embodiment of the present invention;

[0011] Figure 2 This is a schematic diagram of the internal structure of the shell in an embodiment of the present utility model;

[0012] Figure 3 This is a schematic diagram of the installation of the signal acquisition module and the housing in an embodiment of this utility model;

[0013] Figure 4 This is another structural diagram showing the installation of the signal acquisition module and the housing in an embodiment of this utility model.

[0014] In the picture:

[0015] 100-Shell; 110-Limiting groove; 200-Twin screw stirring assembly; 210-Stirring screw; 300-Drive module; 400-Signal acquisition module; 500-Fixed structure; a-Inlet; b-Outlet. Detailed Implementation

[0016] 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.

[0017] A twin-screw pulping machine is a device that uses two screws that rotate synchronously to extrude and mix the raw materials for pulp. During long-term operation, collisions may occur between the screws and between the screws and the cylinder wall, leading to screw wear. If worn screws are not replaced or maintained in a timely manner, it will affect the quality of the subsequent pulp preparation. Substandard pulp must be discarded, resulting in waste.

[0018] Currently, during the operation of twin-screw pulping equipment, the common method for checking for internal collisions is by operators listening to the equipment. However, this manual method is not only inefficient and lacks precision, but also leads to significant waste of pulp if collisions are not detected in time.

[0019] Based on this, the present invention provides a twin-screw pulping equipment. By monitoring the equipment in real time, the wear condition inside the equipment can be understood at any time, which facilitates timely maintenance of the equipment, thereby improving the quality of the pulp and avoiding pulp waste.

[0020] refer to Figure 1 and Figure 2 The twin-screw pulping device in this embodiment may include a housing 100, a twin-screw stirring assembly 200, a drive module 300, and a signal acquisition module 400. The interior of the housing 100 can be used to contain the slurry. The housing 100 has an inlet a and an outlet b, which may be located at either end of the housing 100, so that the raw material of the slurry can enter the housing 100 from the inlet a, be squeezed and stirred to form a uniformly mixed slurry, and then flow out from the outlet b.

[0021] A twin-screw agitator 200 is disposed inside the housing 100. The twin-screw agitator 200 may include two agitator screws 210 spaced apart and arranged parallel to each other. The axial direction of the agitator screws 210 may be consistent with the arrangement direction of the inlet a and outlet b, and the agitator screws 210 may rotate relative to the housing 100 around their own axes. The distance between the two agitator screws 210 is small. When the raw material of the slurry enters the housing 100, the two synchronously rotating agitator screws 210 can compress the solid raw material located between the two agitator screws 210 to crush the solid raw material. Furthermore, the rotating agitator screws 210 can also agitate the crushed solid raw material and liquid raw material to fully mix the solid raw material and liquid raw material to form a uniformly mixed slurry.

[0022] The drive module 300 is disposed outside the housing 100 and located on the side near the feed inlet a of the housing 100. The drive module 300 is connected to the stirring screw 210 to provide driving force for the stirring screw 210, so that the stirring screw 210 can rotate relative to the housing 100.

[0023] The drive module 300 may be, for example, a gearbox, whose output shaft may pass through the housing 100, thereby making a transmission connection with the stirring screw 210 located inside the housing 100.

[0024] The signal acquisition module 400 is disposed on the outer surface of the housing 100. When the two stirring screws 210 rotate synchronously to mix the slurry, the signal acquisition module 400 can be used to detect the vibration frequency or sound characteristics inside the housing 100. If a collision occurs between the two stirring screws 210, or between the stirring screw 210 and the inner wall of the housing 100, the vibration frequency of the housing 100 will change compared to normal operation, or the sound characteristics inside the housing 100 will change. At this time, the signal data acquired by the signal acquisition module 400 will show a significant change. Operators can know that a collision has occurred inside the equipment based on the signal values ​​acquired by the signal acquisition module 400, and thus can maintain the equipment in a timely manner to prevent the stirring screws 210 from continuing to prepare the slurry in a worn state.

[0025] In this embodiment, there may be one, two or more signal acquisition modules 400, and the specific number of signal acquisition modules 400 can be designed according to actual production needs.

[0026] When there is only one signal acquisition module 400, it can be located on the surface of the housing 100 near the outlet b. Since the end of the stirring screw 210 near the inlet a is connected to the drive module 300, the drive module 300 can limit the end of the stirring screw 210 near the inlet a, maintaining a preset gap between the ends of the two stirring screws 210 near the inlet a. However, the end of the stirring screw 210 near the outlet b is a free end without any limiting structure. During long-term use, this end is prone to deflection relative to its axis, causing collisions between the ends of the two stirring screws 210 near the outlet b, or between the end of the stirring screw 210 near the outlet b and the inner wall of the housing 100, leading to wear on the stirring screw 210. Therefore, when only one signal acquisition module 400 is set, the signal acquisition module 400 is set on the surface of the housing 100 near the discharge port b, which can detect whether the end of the stirring screw 210 near the discharge port b is colliding, so as to understand the collision situation inside the housing 100 in a timely manner.

[0027] When the signal acquisition module 400 is positioned close to the discharge port b, the distance d1 between the signal acquisition module 400 and the discharge port b and the distance d2 between the length of the screw 210 can satisfy: d1 / d2 = 0.1~0.4.

[0028] Understandably, when the screw 210 is assembled with the housing 100, the ratio between the length of the housing 100 along the axis of the screw 210 and the length of the screw 210 is constant to ensure the slurry preparation effect. Based on this, if the value of d1 / d2 is less than 0.1, it indicates that the signal acquisition module 400 is too close to the discharge port b, resulting in a small detection range and inaccurate detection results. Conversely, if the value of d1 / d2 is greater than 0.4, it indicates that the signal acquisition module 400 is too far from the discharge port b, causing it to be far from the area of ​​intense screw vibration, thus reducing detection accuracy. Therefore, controlling the value of d1 / d2 between 0.1 and 0.4 ensures both the detection range and accuracy of the signal acquisition module 400.

[0029] like Figure 1 As shown, when there are at least two signal acquisition modules 400, the at least two signal acquisition modules 400 can be arranged along the axial direction of the stirring screw 210 on the same side of the housing 100, and any two adjacent signal acquisition modules 400 can be spaced apart to detect signals from different parts inside the housing 100. Because multiple signal acquisition modules 400 are arranged, the area over which each signal acquisition module 400 acquires signals can be increased, thereby obtaining more signals inside the housing 100 and improving the accuracy of judging collision conditions inside the housing 100.

[0030] Furthermore, when two or more signal acquisition modules 400 are provided, one of the signal acquisition modules 400 can be located in the housing 100 near the feed inlet a, and another of the signal acquisition modules 400 can be located in the housing 100 near the discharge outlet b.

[0031] Because the end of the stirring screw 210 near the discharge port b is a free end, it is prone to collision with the inner wall of the housing 100. Furthermore, since the raw materials at the inlet a are mostly separated solid and liquid materials, the large work of the stirring screw 210 during the crushing of solid materials by the two stirring screws 210 results in significant wear on the part of the stirring screw 210 near the inlet a, making it prone to eccentricity and collision. Therefore, signal acquisition modules 400 are installed near the inlet a and discharge port b of the housing 100 to effectively detect collisions within the housing 100.

[0032] At this time, the distance d1 between the signal acquisition module 400 near the discharge port b and the discharge port b, the length d2 of the screw, and the distance d3 between the signal acquisition module 400 near the feed port a and the feed port a can satisfy: d1 / d2 = 0.1~0.4, d3 / d2 = 0.1~0.4.

[0033] As mentioned earlier, if the distance between the signal acquisition module 400 and the discharge port b is too small, it will result in a small detection range, which is not conducive to detection. If the distance is too large, it will result in a decrease in detection accuracy. Similarly, if the distance between the signal acquisition module 400 and the feed port a is too small, it will also result in a small detection range. If it is too large, it will cause the signal acquisition module 400 to be far away from the area of ​​severe screw vibration, affecting detection accuracy. Therefore, by adjusting the distance between the signal acquisition module 400 near the discharge port b and the discharge port b, and the distance between the signal acquisition module 400 near the feed port a and the feed port a, it is possible to ensure both the detection range of the signal acquisition module 400, avoid missed detections, and ensure detection accuracy.

[0034] In some embodiments, the signal acquisition module 400 can be a temperature and vibration sensor or a vibration sensor. In this case, the signal acquisition module 400 can be attached to the surface of the housing 100 to detect the vibration frequency of the housing 100. When the equipment is operating normally, the signal value acquired by the signal acquisition module 400 is the normal value for equipment operation. It can be understood that the vibration frequency of the housing 100 acquired by the signal acquisition module 400 is relatively low during normal operation. When a collision occurs between the two stirring screws 210 or between the stirring screw 210 and the inner wall of the housing 100, the vibration frequency of the housing 100 will increase significantly, and the signal value acquired by the signal acquisition module 400 will increase significantly. Therefore, by setting a temperature and vibration sensor or a vibration sensor to detect the vibration frequency of the housing 100, the detection of collisions inside the housing 100 can be effectively completed.

[0035] It is worth mentioning that when a temperature and vibration sensor is installed, it can also be used to detect the temperature of the surface of the housing 100. When a collision occurs inside the housing 100, heat is generated due to friction, causing a change in the internal temperature of the housing 100. At this time, the temperature value detected by the temperature and vibration sensor will be significantly different from the temperature value during normal operation of the equipment, thereby improving the accuracy of judging the collision situation inside the housing 100.

[0036] In addition, in this embodiment, the twin-screw pulping equipment may also include an alarm device (not shown in the figure). The alarm device can be connected to the signal acquisition module 400 so that the signal acquisition module 400 can send the acquired signal value to the alarm device. Before the equipment operates, the vibration frequency of the housing 100 during equipment operation can be used as the alarm value, and the alarm value is preset in the alarm device. During equipment operation, if the signal value acquired by the signal acquisition module 400 is greater than the alarm value, the alarm device will sound an alarm. If the signal value acquired by the signal acquisition module 400 is less than the alarm value, the alarm device will not sound an alarm.

[0037] Alarm devices can be, for example, buzzers or warning lights, so that workers can promptly detect alarm signals from the alarm devices.

[0038] In some embodiments, the signal acquisition module 400 can be a voiceprint recognition device. In this case, the signal acquisition module 400 can be attached to the surface of the housing 100 to detect sound characteristics inside the housing 100. During normal operation, the sound characteristics inside the housing 100, such as pitch and volume, remain within a relatively fixed range. When a collision occurs inside the housing 100, the pitch and volume inside the housing 100 will change significantly. Therefore, by using a voiceprint recognition device to detect the sound characteristics inside the housing 100, collisions inside the housing 100 can also be effectively detected.

[0039] In this embodiment, the twin-screw pulping equipment can also be equipped with an alarm device. The alarm device is connected to the signal acquisition module 400, so that the signal acquisition module 400 sends the detected signal to the alarm device. Understandably, during normal operation of the equipment, the pitch and volume inside the housing 100 are low. Therefore, the pitch and volume during normal operation can be used as the alarm values ​​for the alarm device. During equipment operation, if the pitch and volume acquired by the alarm device exceed the alarm values, an alarm will be issued to notify the operator of an internal equipment malfunction.

[0040] Furthermore, in this embodiment, the voiceprint recognition device is attached to the surface of the housing 100, which makes it easier to obtain the sound characteristics inside the housing 100 and more effectively detect minor abnormal noises during the operation of the device, thereby improving the accuracy of the judgment.

[0041] In addition, a soundproof cover can be installed on the outside of the voiceprint recognition device. This soundproof cover can be used to isolate and protect the voiceprint recognition device from the external environment, so as to avoid the interference of external sound with the detection work of the voiceprint recognition device.

[0042] Further, refer to Figure 3When assembling the signal acquisition module 400 with the housing 100, for example, the fixing structure 500 can be fixed to the housing 100 first, and then the signal acquisition module 400 can be assembled with the fixing structure 500 to fix the signal acquisition module 400 to the housing 100. The fixing structure 500 can be, for example, a columnar structure with mounting holes inside. A rubber ring can be provided on the inner wall of the mounting holes. When the signal acquisition module 400 is assembled with the fixing structure 500, the rubber ring can be fitted onto the side of the signal acquisition module 400 to fix the signal acquisition module 400 to the fixing structure 500. At this time, the signal acquisition module 400 is fitted into the outer surface of the housing 100 while passing through the rubber ring, so that the signal acquisition module 400 can acquire signals.

[0043] Assembling the signal acquisition module 400 with the housing 100 using the above method not only facilitates fixing the signal acquisition module 400 to the housing 100 or detaching the signal acquisition module 400 from the housing 100, but also avoids damage to the signal acquisition module 400 when it is directly fixed to the housing 100.

[0044] In some embodiments, reference Figure 4 When the signal acquisition module 400 is assembled with the housing 100, the housing 100 may be provided with a limiting groove 110, which is opposite to the inner groove on the outer surface of the housing 100. At this time, at least a portion of the fixing structure 500 extends into the limiting groove 110 and is fixed relative to the side wall of the limiting groove 110. At least a portion of the signal acquisition module 400 is snapped into the limiting groove 110 and abuts against the bottom of the limiting groove 110 to achieve signal detection.

[0045] In this embodiment, when the limiting groove 110 is provided, it not only helps to enhance the fixing effect between the signal acquisition module 400 and the housing 100, but also allows the signal acquisition module 400 to get closer to the inside of the housing 100, so that the signal acquisition module 400 can more effectively detect minor abnormal noises during the operation of the equipment.

[0046] The twin-screw pulping equipment in this embodiment of the invention utilizes a signal acquisition module installed on the outer surface of the shell. This module detects the vibration frequency of the shell or the sound characteristics inside the shell, providing a direct and efficient way to understand whether there is a collision inside the shell. Furthermore, when a collision occurs inside the shell, the equipment can be maintained promptly, ensuring pulp quality and preventing pulp waste.

[0047] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of this utility model. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A twin-screw pulping apparatus, characterized in that, It includes a shell, a twin-screw stirring assembly, a drive module, and a signal acquisition module; The interior of the shell is used to contain the slurry, and the shell has an inlet and an outlet; The twin-screw stirring assembly is disposed inside the housing. The twin-screw stirring assembly includes two stirring screws spaced apart and arranged in parallel. The axial direction of the stirring screws is consistent with the arrangement direction of the feed inlet and the discharge outlet, and the stirring screws can rotate relative to the housing around their own axis. The drive module is located outside the housing and is positioned on the side near the feed inlet of the housing. The drive module is used to drive the two stirring screws to rotate around their own axes respectively. The signal acquisition module is disposed on the outer surface of the housing to detect the vibration frequency of the housing or the sound characteristics inside the housing.

2. The twin screw pulping apparatus of claim 1, wherein, The signal acquisition module is a single unit, and it is located on the housing near the discharge port.

3. The twin screw pulping apparatus of claim 2, wherein, The distance d1 between the signal acquisition module and the discharge port and the length d2 of the screw satisfy the following condition: d1 / d2 = 0.1 to 0.

4.

4. The twin screw pulping apparatus of claim 1, wherein, The twin-screw pulping equipment includes at least two signal acquisition modules, which are spaced apart along the axial direction of the stirring screw on the outer surface of the shell. One of the signal acquisition modules is located on the housing near the feed inlet, and the other of the signal acquisition modules is located on the housing near the discharge outlet.

5. The twin screw pulping apparatus of claim 4, wherein, The distance d1 between the signal acquisition module near the discharge port and the discharge port, the length d2 of the screw, and the distance d3 between the acquisition module near the feed port and the feed port satisfy the following: d1 / d2 = 0.1 to 0.4; d3 / d2 = 0.1 to 0.

4.

6. The twin screw pulping apparatus of claim 1, wherein, The signal acquisition module is a temperature and vibration sensor or a vibration sensor.

7. The twin screw pulping apparatus of claim 1, wherein, The signal acquisition module is a voiceprint recognition device.

8. The twin-screw pulping equipment according to claim 7, characterized in that, It also includes a soundproof cover, which is disposed on the signal acquisition module.

9. The twin-screw pulping equipment according to claim 1, characterized in that, The housing is provided with a limiting groove, at least a portion of the signal acquisition module is snapped into the limiting groove, and the signal acquisition module is in contact with the bottom of the limiting groove.

10. The twin-screw pulping equipment according to claim 1, characterized in that, It also includes an alarm device, which is connected to the signal acquisition module.

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