Material storage tank and method for detecting lubricating performance of material storage tank

Abstract

The application belongs to the technical field of material storage and transportation, and discloses a material storage cabinet and a method for detecting lubricating performance of the material storage cabinet. When the material storage cabinet is used to load and transport materials on the conveying belt, the movement speed of the conveying belt can be kept constant, so that the conveying speed of the materials can be controlled conveniently. In addition, the output power of the motor can be obtained in real time by the frequency converter. Since the movement speed of the conveying belt is kept constant, the output power of the motor is only used to overcome the resistance when the conveying belt does not load materials. Therefore, the lubricating performance of the material storage cabinet can be judged by the output power of the motor, and the lubricating performance of the material storage cabinet can be detected and judged quickly. The method for detecting the lubricating performance of the material storage cabinet can detect and judge the lubricating performance of the material storage cabinet quickly.

Description

Technical Field

[0001] This invention relates to the field of material storage and transportation technology, and in particular to material storage tanks and methods for testing the lubrication performance of material storage tanks. Background Technology

[0002] In tobacco processing production lines, tobacco materials such as tobacco leaves, shredded tobacco, and tobacco stems are typically stored in storage tanks. In addition, the storage tanks also serve to transport materials. The bottom belt of the storage tank is usually driven by a motor through chain transmission. Due to the heavy weight of the materials in the storage tank, the lubrication performance of the storage tank plays an important role in the normal operation of the equipment. Factors that lead to a decline in the lubrication performance of the storage tank include chain wear, chain breakage, chain tooth wear, reducer wear, damage to minor parts, or untimely lubrication of the equipment. These factors are characterized by their suddenness and difficulty in being observed with the naked eye, making it difficult to test the lubrication performance of the storage tank. Summary of the Invention

[0003] According to one aspect of the present invention, a material storage tank is provided to solve the problem that the lubrication performance of storage tanks is difficult to test in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Material storage cabinets, used for storing and transporting materials, include:

[0006] Cabinet, used for installation on the ground;

[0007] A conveyor belt is installed in the cabinet and is used to carry materials;

[0008] An electric motor is used to drive the conveyor belt to move relative to the cabinet in order to transport materials;

[0009] A frequency converter is electrically connected to the motor and is used to change the output power of the motor so that the conveyor belt always moves at a preset speed relative to the cabinet.

[0010] As a preferred embodiment of the material storage cabinet, the conveyor belt is connected to a chain, the chain is connected to two sprockets, both of which are rotatably mounted on the cabinet body, and the motor is drivenly connected to one of the sprockets.

[0011] As a preferred embodiment of the material storage cabinet, the cabinet has a material conveying channel and a material outlet communicating with the material conveying channel. The conveyor belt is located within the material conveying channel, and the motor is used to drive the conveyor belt to move relative to the cabinet so as to convey the material located within the material conveying channel toward the material outlet.

[0012] As a preferred embodiment of the material storage cabinet, the cabinet body includes:

[0013] Support poles are used to support the structure on the ground.

[0014] A support frame is fixedly mounted on the support pole, and the conveyor belt is mounted on the support frame.

[0015] As a preferred embodiment of the material storage tank, it also includes an auxiliary material adding device, which is used to add auxiliary materials to the material located in the material conveying channel.

[0016] As a preferred embodiment of the material storage cabinet, the auxiliary material adding device is slidably disposed on the cabinet body along the extension direction of the material conveying channel.

[0017] According to another aspect of the present invention, a method for testing the lubrication performance of a material storage tank is provided, implemented using the aforementioned material storage tank, the method comprising:

[0018] S100: Detect whether there is material on the conveyor belt;

[0019] If no material is detected on the conveyor belt, then step S200 is executed;

[0020] S200: The output power of the motor is changed by the frequency converter so that the conveyor belt always moves relative to the cabinet at a preset speed, and the work W done by the motor within a preset time is obtained;

[0021] S300: Determine the magnitude of W compared to the first preset value W1;

[0022] If W≤W1, then the lubrication performance is considered to be good.

[0023] As a preferred method for testing the lubrication performance of material storage tanks, if W > W1, then step S400 is executed.

[0024] S400: Determine the size of W and the second preset value W2, wherein the second preset value W2 is greater than the first preset value W1;

[0025] If W≤W2, then the lubrication performance is considered average.

[0026] If W > W2, then the lubrication performance is poor.

[0027] As a preferred method for testing the lubrication performance of material storage tanks, it also includes issuing an alarm message after determining that the lubrication performance is poor.

[0028] As a preferred embodiment of the method for testing the lubrication performance of a material storage tank, step S200, obtaining the work W performed by the motor within a preset time period, includes:

[0029] The preset time is divided into multiple unit time intervals t. i(i = 1, 2, ..., n), and sequentially obtain the average output power P of the motor within multiple unit time intervals. i (i = 1, 2, ..., n);

[0030] Calculate the work W done by the motor within a preset time period, where W = ∑P i *t i (i = 1, 2, ..., n).

[0031] The beneficial effects of this invention are:

[0032] This invention provides a material storage cabinet for storing and conveying materials. The cabinet includes a cabinet body, a conveyor belt, a motor, and a frequency converter. The cabinet body is installed on the ground. The conveyor belt is mounted on the cabinet body and carries the materials. The motor drives the conveyor belt to move relative to the cabinet body to convey the materials. The frequency converter is electrically connected to the motor and changes the motor's output power to ensure the conveyor belt always moves at a preset speed relative to the cabinet body. When the conveyor belt carries and conveys materials, this material storage cabinet maintains a constant conveyor belt speed, facilitating control of the material conveying rate. Furthermore, the material storage cabinet can obtain the motor's output power in real time via the frequency converter. Since the conveyor belt's speed remains constant, when the conveyor belt is not carrying materials, the motor's output power is only used to overcome resistance. Therefore, the lubrication performance of the material storage cabinet can be judged by the magnitude of the motor's output power, allowing for rapid detection and assessment of the material storage cabinet's lubrication performance.

[0033] This invention also provides a method for testing the lubrication performance of a material storage tank. In this method, the presence of material on the conveyor belt is detected. If no material is detected, the output power of the motor is changed via a frequency converter to ensure the conveyor belt always moves relative to the tank at a preset speed. The work W done by the motor within a preset time is then recorded. At this time, the motor's output power is only used to overcome resistance, and the magnitude of the work W is only related to the lubrication performance of the material storage tank. The difference between W and a first preset value W1 is determined. If W ≤ W1, it indicates that the motor requires less work to overcome resistance, thus indicating good lubrication performance. This method for testing the lubrication performance of a material storage tank can quickly detect and determine its lubrication performance. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the material storage tank in an embodiment of the present invention. Figure 1 ;

[0035] Figure 2 This is a schematic diagram of the structure of the material storage tank in an embodiment of the present invention. Figure 2 ;

[0036] Figure 3 This is a flowchart of the material storage tank lubrication performance testing method in an embodiment of the present invention.

[0037] In the picture:

[0038] 1. Cabinet body; 101. Material conveying channel; 102. Material outlet; 11. Supporting uprights; 12. Supporting frame;

[0039] 2. Conveyor belt;

[0040] 3. Electric motor;

[0041] 4. Frequency converter;

[0042] 5. Auxiliary material adding device;

[0043] 6. Monitor;

[0044] 7. Alarm;

[0045] 10. Controller. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0047] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0050] Example 1

[0051] In tobacco processing production lines, tobacco materials such as tobacco leaves, shredded tobacco, and tobacco stems are typically stored in storage tanks. In addition, the storage tanks also serve to transport materials. The bottom belt of the storage tank is usually driven by a motor through chain transmission. Due to the heavy weight of the materials in the storage tank, the lubrication performance of the storage tank plays an important role in the normal operation of the equipment. Factors that lead to a decline in the lubrication performance of the storage tank include chain wear, chain breakage, chain tooth wear, reducer wear, damage to minor parts, or untimely lubrication of the equipment. These factors are characterized by their suddenness and difficulty in being observed with the naked eye, making it difficult to test the lubrication performance of the storage tank.

[0052] To address the aforementioned issues, this embodiment provides a material storage tank to solve the problem that the lubrication performance of storage tanks is difficult to test in the prior art, and it can be used in the field of material storage and transportation technology.

[0053] Reference Figure 1 The material storage tank is used for storing and conveying materials and includes a cabinet 1, a conveyor belt 2, a motor 3, and a frequency converter 4. The cabinet 1 is installed on the ground; the conveyor belt 2 is installed on the cabinet 1 and is used to carry materials; the motor 3 drives the conveyor belt 2 to move relative to the cabinet 1 to convey materials; the frequency converter 4 is electrically connected to the motor 3 and is used to change the output power of the motor 3 so that the conveyor belt 2 always moves relative to the cabinet 1 at a preset speed. The speed of the conveyor belt 2 relative to the cabinet 1 is always relatively slow, and can be considered as not changing, i.e., always moving at the preset speed. When the conveyor belt 2 is carrying and conveying materials, the material storage tank can keep the movement speed of the conveyor belt 2 constant, facilitating the control of the material conveying rate. Furthermore, the material storage tank can obtain the output power of the motor 3 in real time through the frequency converter 4. Since the movement speed of the conveyor belt 2 remains constant, when the conveyor belt 2 is not carrying materials, the output power of the motor 3 is only used to overcome resistance. Therefore, the lubrication performance of the material storage tank can be judged by the magnitude of the output power of the motor 3, which can be used for rapid detection and judgment of the lubrication performance of the material storage tank.

[0054] Continue to refer to Figure 1The conveyor belt 2 is connected to a chain, and the chain is connected to two sprockets. Both sprockets are rotatably mounted on the cabinet 1. The motor 3 is driven by one of the sprockets, so that the motor 3 and the conveyor belt 2 are connected by chain drive. Specifically, the two sprockets are located at the beginning and end of the chain, respectively. The output shaft of the motor 3 is connected to one of the sprockets by gear drive, belt drive or chain drive.

[0055] Continue to refer to Figure 1 The cabinet 1 has a material conveying channel 101 and a material outlet 102 connected to the material conveying channel 101. The conveyor belt 2 is located in the material conveying channel 101. The motor 3 is used to drive the conveyor belt 2 to move relative to the cabinet 1 so as to convey the material in the material conveying channel 101 toward the material outlet 102, so that the material in the material conveying channel 101 is conveyed in the same direction.

[0056] Continue to refer to Figure 1 The cabinet 1 includes support poles 11 and a support frame 12. The support poles 11 are used to support the material on the ground. The support frame 12 is fixedly installed on the support poles 11, and the conveyor belt 2 is installed on the support frame 12. Thus, the support poles 11 support the support frame 12, thereby further supporting the conveyor belt 2. Optionally, multiple support poles 11 are provided, and the multiple support poles 11 are spaced apart along the extension direction of the material conveying channel 101 to improve the supporting effect of the support poles 11 on the support frame 12.

[0057] Continue to refer to Figure 1 The material storage tank also includes an auxiliary material adding device 5, which is used to add auxiliary materials to the material located in the material conveying channel 101. Generally, it is to add water or liquid. The auxiliary materials can penetrate into the tobacco leaves, tobacco shreds, and tobacco stems in the material conveying channel 101, and further make the temperature, moisture or liquid of the tobacco leaves, tobacco shreds, and tobacco stems more uniform, so that the plant fiber tissue can fully absorb it to meet the requirements of the tobacco processing process.

[0058] Continue to refer to Figure 1 Along the extension direction of the material conveying channel 101, the auxiliary material adding device 5 is slidably disposed on the cabinet 1, so that the auxiliary material adding device 5 can slide relative to the cabinet 1, so that the auxiliary material adding device 5 can add auxiliary materials to materials located at different positions in the material conveying channel 101 along the extension direction of the material conveying channel 101.

[0059] Continue to refer to Figure 1 The material storage cabinet also includes a drive device for driving the auxiliary material adding device 5 to move relative to the cabinet body 1, so that the auxiliary material adding device 5 can be driven to a predetermined position by the drive device to realize the automatic addition of auxiliary materials.

[0060] Reference Figures 1-2The material storage tank also includes a display 6 and an alarm 7 installed in the cabinet 1. The material storage tank also includes a controller 10, with the display 6 and alarm 7 all communicatively connected to the controller 10. A frequency converter 4 is also communicatively connected to the controller 10. The controller 10 can obtain the output power of the motor 3 through the frequency converter 4. When the conveyor belt 2 is not carrying material and its speed remains constant, the output power of the motor 3 is only used to overcome resistance. Therefore, the higher the output power of the motor 3, the worse the lubrication performance of the material storage tank; the lower the output power of the motor 3, the better the lubrication performance. The controller 10 can store corresponding programs. After obtaining the output power of the motor 3, it determines the lubrication performance of the material storage tank at this time and displays the result on the display 6. When poor lubrication performance is detected, the alarm 7 can be controlled to issue audible and visual alarm information to remind personnel to stop the machine for maintenance as soon as possible.

[0061] Example 2

[0062] This embodiment provides a method for testing the lubrication performance of a material storage tank, implemented using the aforementioned material storage tank. (Refer to...) Figure 3 The method for testing the lubrication performance of the material storage tank includes the following steps.

[0063] S100: Detects whether there is material on conveyor belt 2.

[0064] If no material is detected on conveyor belt 2, proceed to step S200; if material is detected on conveyor belt 2, return to step S100.

[0065] The presence of material on conveyor belt 2 can be determined by detecting its weight. If the weight equals the weight of conveyor belt 2, there is no material on it; if the weight is greater than the weight, there is material. Alternatively, a laser emitter and receiver can be used. The laser emitter and receiver are located at opposite ends of conveyor belt 2, with the receiver facing the emitter. If the receiver receives the laser light, there is no material on conveyor belt 2; if it does not, there is material.

[0066] S200: The output power of the motor 3 is changed by the frequency converter 4 so that the conveyor belt 2 always moves relative to the cabinet 1 at a preset speed, and the work W done by the motor 3 within a preset time is obtained.

[0067] At this time, the output power of motor 3 is only used to overcome resistance, and the amount of work W done by motor 3 is only related to the lubrication performance of the material storage tank.

[0068] In step S200, obtaining the work W done by motor 3 within a preset time includes the following steps.

[0069] The preset time is divided into multiple unit time intervals t. i (i = 1, 2, ..., n), and sequentially obtain the average output power P of motor 3 within multiple unit time intervals. i (i = 1, 2, ..., n).

[0070] It is understandable that as long as the unit time interval is short enough, the output power of motor 3 remains basically constant within the unit time interval. Therefore, obtaining the output power at any time within the unit time interval will yield the average output power of motor 3 within that unit time interval.

[0071] Calculate the work W done by motor 3 within a preset time, where W = ∑P i *t i (i = 1, 2, ..., n).

[0072] Since the length of the unit time interval is generally the same, the average output power P of motor 3 within multiple unit time intervals is calculated. i By summing these steps, the work done by motor 3 within the preset time (W) can be obtained.

[0073] As an alternative, the output power of motor 3 can be obtained as a function of time, and the curve can be integrated to obtain the work done by motor 3 (W).

[0074] S300: Determine the magnitude of W compared to the first preset value W1;

[0075] If W ≤ W1, it indicates that the motor 3 requires less work to overcome the resistance, thus indicating good lubrication performance. If W > W1, then proceed to step S400.

[0076] The first preset value W1 can be obtained through a large number of previous experiments.

[0077] S400: Determine the magnitude of W and the second preset value W2, wherein the second preset value W2 is greater than the first preset value W1.

[0078] If W ≤ W2, it indicates that the work required for motor 3 to overcome the resistance is greater than the first preset value W1, but still does not exceed the second preset value W2, thus the lubrication performance is determined to be average. If W > W2, it indicates that the work required for motor 3 to overcome the resistance is greater, thus the lubrication performance is determined to be poor, and step S500 is continued.

[0079] The second preset value W2 can be obtained through a large number of previous experiments.

[0080] S500: Issues an alarm message.

[0081] Alarm information can be emitted through the display 6 or the alarm 7, and is generally in the form of sound and light.

[0082] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for testing the lubrication performance of a material storage tank, implemented using a material storage tank for storing and transporting materials, comprising: Cabinet (1), for installation on the ground; A conveyor belt (2) is installed in the cabinet (1) and is used to carry materials; A motor (3) is used to drive the conveyor belt (2) to move relative to the cabinet (1) to transport materials; The frequency converter (4) is electrically connected to the motor (3) and is used to change the output power of the motor (3) so that the conveyor belt (2) always moves at a preset speed relative to the cabinet (1); The method for testing the lubrication performance of the material storage tank is characterized by comprising: S100: Detect whether there is material on the conveyor belt (2); If no material is detected on the conveyor belt (2), then step S200 is executed; S200: The output power of the motor (3) is changed by the frequency converter (4) so ​​that the conveyor belt (2) always moves at a preset speed relative to the cabinet (1) and the work W done by the motor (3) within a preset time is obtained; S300: Determine the magnitude of W compared to the first preset value W1; If W≤W1, then the lubrication performance is considered to be good.

2. The method for testing the lubrication performance of a material storage tank according to claim 1, characterized in that, The conveyor belt (2) is connected to a chain, and the chain is connected to two sprockets. Both sprockets are rotatably mounted on the cabinet (1), and the motor (3) is connected to one of the sprockets.

3. The method for testing the lubrication performance of a material storage tank according to claim 1, characterized in that, The cabinet (1) has a material conveying channel (101) and a material outlet (102) connected to the material conveying channel (101). The conveyor belt (2) is located in the material conveying channel (101). The motor (3) is used to drive the conveyor belt (2) to move relative to the cabinet (1) so as to convey the material located in the material conveying channel (101) toward the material outlet (102).

4. The method for testing the lubrication performance of a material storage tank according to claim 3, characterized in that, The cabinet (1) includes: Support pole (11) is used for support on the ground; The support frame (12) is fixedly installed on the support pole (11), and the conveyor belt (2) is installed on the support frame (12).

5. The method for testing the lubrication performance of a material storage tank according to claim 3, characterized in that, It also includes an auxiliary material adding device (5), which is used to add auxiliary materials to the material located in the material conveying channel (101).

6. The method for testing the lubrication performance of a material storage tank according to claim 5, characterized in that, The auxiliary material adding device (5) is slidably disposed on the cabinet (1) along the extension direction of the material conveying channel (101).

7. The method for testing the lubrication performance of a material storage tank according to claim 1, characterized in that, If W > W1, then proceed to step S400; S400: Determine the size of W and the second preset value W2, wherein the second preset value W2 is greater than the first preset value W1; If W≤W2, then the lubrication performance is considered average. If W > W2, then the lubrication performance is poor.

8. The method for testing the lubrication performance of a material storage tank according to claim 7, characterized in that, It also includes issuing an alarm message after determining that the lubrication performance is poor.

9. The method for testing the lubrication performance of a material storage tank according to claim 1, characterized in that, In step S200, obtaining the work W done by the motor (3) within a preset time includes: The preset time is divided into multiple unit time intervals t. i (i=1, 2, ..., n), and sequentially obtain the average output power P of the motor (3) within multiple unit time intervals. i (i=1, 2, ..., n); Calculate the work W done by the motor (3) within a preset time period, where W = ∑P i *t i (i=1, 2, ..., n).

Images