A white clay conveying and feeding device

Abstract

This utility model relates to the field of oil decolorization technology and discloses a clay conveying and feeding device, including a feeding hopper, a feeding pump, a clay storage tank, a pulse bag filter, a fan, and a decolorization reaction tank. It also includes an inlet air pressure sensor, an outlet air pressure sensor, a frequency converter, and a control system. The inlet air pressure sensor is installed on the air inlet pipe of the feeding pump to detect the inlet air pressure; the outlet air pressure sensor is installed on the air outlet pipe connecting the pulse bag filter and the fan to detect the outlet air pressure; the control system receives signals and adjusts the frequencies of the feeding pump and the fan through the frequency converter to achieve coordinated control. When the pressure difference changes, the system adjusts the frequencies of the fan and the feeding pump accordingly. Abnormal pressure differences trigger an alarm or shutdown, maintaining a stable gas-solid ratio in the pipeline, reducing blockages, improving efficiency, ensuring operational safety, and achieving energy savings.

Description

Technical Field

[0001] This utility model belongs to the field of oil decolorization process technology, specifically relating to a clay conveying and feeding device. Background Technology

[0002] In the decolorization process, bleaching clay is used as an adsorbent for oil and pigments. For example... Figure 1 As shown, the process flow of the existing bleaching clay conveying system is as follows: the ton-sized bleaching clay on the first floor is fed at a fixed speed by a feeding pump. The pump draws air and bleaching clay into the bleaching clay storage tank. Part of the bleaching clay enters the storage tank, while the other part is adsorbed onto the surface of the dust collector bags of the pulse dust collector. When a certain amount of bleaching clay accumulates on the surface of the dust collector bags, the system activates the air pulse generator to impact the bleaching clay on the surface of the dust collector bags, causing the surface bleaching clay to fall into the bleaching clay storage tank. The air filtered by the dust collector bags is then discharged outdoors by a fan.

[0003] However, current bleaching clay transportation systems are prone to frequent blockages, requiring manual dredging and severely impacting transportation efficiency. Therefore, ensuring efficient bleaching clay transportation while preventing pipeline blockages has become a pressing technical problem for those skilled in the art.

[0004] In view of this, we propose a clay conveying and feeding device to solve the problems of easy blockage and reduced conveying efficiency of the existing clay conveying system mentioned above. Utility Model Content

[0005] To address the problem of frequent blockages and reduced conveying efficiency in existing clay conveying systems, this invention provides a clay conveying and unloading device to achieve efficient clay conveying while avoiding pipeline blockage.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A bleaching clay conveying and feeding device includes a feeding hopper, a feeding pump, a bleaching clay storage tank, a pulse bag dust collector, a fan, a decolorization reaction tank, and also includes an inlet air pressure sensor, an outlet air pressure sensor, a frequency converter, and a control system.

[0008] An inlet air pressure sensor is installed on the air inlet pipe of the feed pump to detect the inlet air pressure.

[0009] The outlet air pressure sensor is installed on the air outlet duct connecting the pulse bag dust collector and the fan to detect the outlet air pressure of the duct.

[0010] The frequency converter is electrically connected to the feed pump and the fan respectively, and is used to adjust the frequency of the feed pump and the fan;

[0011] The control system is electrically connected to the inlet wind pressure sensor, the outlet wind pressure sensor, and the frequency converter, respectively, and is used to receive wind pressure signals and control the operation of the frequency converter.

[0012] Preferably, the discharge port at the bottom of the hopper is connected to the air inlet pipe via a discharge pipe. The bleaching clay and air feeding pipe of the discharge pump sends bleaching clay and air into the bleaching clay storage tank. The top of the bleaching clay storage tank is connected to a pulse bag filter, and the bottom of the bleaching clay storage tank is connected to the decolorization reaction tank via a bleaching clay adding pipe. The outlet of the blower is connected to the discharge pipe to exhaust the dust-removed gas outdoors. The discharge hopper is used to receive bleaching clay after unpacking from ton-sized bleaching clay bags.

[0013] Preferably, the air pulse generator on the pulse bag filter is correspondingly set to the dust bag to impact the bleaching clay on the surface of the dust bag so that the bleaching clay on the surface of the dust bag falls into the bleaching clay storage tank.

[0014] Preferably, the control system can automatically adjust the fan frequency according to the pressure difference between the inlet and outlet air pressures, following the frequency of the feed pump by a preset ratio (for example, if the feed volume increases by 10%, the air volume will increase by 8% to 12%), to maintain a stable gas-solid ratio in the pipeline and prevent sedimentation and blockage due to insufficient air volume.

[0015] As a preferred embodiment, when the pressure difference increases, the control system increases the frequency of the fan through the frequency converter, while simultaneously interlocking to reduce the frequency of the feed pump.

[0016] As a preferred option, when the pressure differential is too low (potentially causing a material shortage), the control system reduces the fan frequency via a frequency converter to achieve energy-saving operation.

[0017] Preferably, when the pressure difference increases abnormally (filter bag blockage or separator material accumulation), the control system reduces the fan frequency through the frequency converter and issues an alarm signal to prevent system overpressure.

[0018] Preferably, when the system detects a continuous increase in pipeline pressure differential, the control system automatically triggers a graded response:

[0019] Level 1 Response: Increase fan frequency (increase wind speed for scouring);

[0020] Level 2 response: Reduce the frequency of the feed pump (reduce material input);

[0021] Level 3 response: If the pressure difference still exceeds the limit, the system will shut down immediately and trigger an alarm.

[0022] Compared with the prior art, the technical effects and advantages of this utility model are:

[0023] This invention monitors the inlet and outlet air pressure of the pipeline in real time and calculates the pressure difference by setting inlet and outlet air pressure sensors. The control system uses a frequency converter to realize the linkage adjustment of the fan and the feed pump, so that the air volume dynamically adapts to the feed volume and maintains a stable gas-solid ratio in the pipeline. This fundamentally reduces the pipeline settlement and blockage problem caused by the mismatch between air volume and feed volume, and greatly improves the continuity of kaolin transportation.

[0024] In response to increased pipeline pressure differential, the system can automatically increase the fan frequency to increase the air velocity to flush the pipeline, while simultaneously interlocking to reduce the feed pump frequency to decrease material input, forming a dual protection mechanism. This effectively avoids the shortcomings of a single adjustment method, further reducing the probability of pipeline blockage, reducing the need for manual unblocking, and improving conveying efficiency.

[0025] When the differential pressure is detected to be too low, the system will automatically reduce the fan frequency to achieve energy-saving operation. When the differential pressure is abnormally high (such as filter bag blockage or separator material accumulation), the system can reduce the fan frequency and issue an alarm in time to prevent system overpressure. Compared with the lack of abnormal response mechanism in existing technologies, this significantly improves the safety and stability of system operation.

[0026] In response to the continuous increase in pipeline pressure differential, the system is equipped with a graded response mechanism, which gradually upgrades the handling measures from increasing the frequency of the blower and reducing the frequency of the feed pump to emergency shutdown alarms, ensuring that appropriate responses can be taken in different abnormal situations, and further guaranteeing the reliable operation of the clay transportation process. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the existing technology;

[0028] Figure 2 This is a schematic diagram of the structure of a clay conveying and feeding device in an embodiment of this utility model;

[0029] Figure 3 This is a flowchart of the present invention;

[0030] In the diagram: 1. Feed hopper; 2. Feed pipe; 3. Air inlet pipe; 4. Feed pump; 5. Bleaching clay and air feeding pipe; 6. Bleaching clay storage tank; 7. Pulse bag filter; 8. Bleaching clay addition pipe; 9. Decolorization reaction tank; 10. Air outlet pipe; 11. Fan; 12. Discharge pipe; 13. Inlet air pressure sensor; 14. Outlet air pressure sensor; 15. Frequency converter; 16. Ton-sized bleaching clay bag; 17. Air pulse generator. 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] This application discloses a clay conveying and feeding device. (Refer to...) Figures 2 to 3 The device includes a hopper 1, a pump 4, a clay storage tank 6, a pulse bag dust collector 7, a fan 11, a decolorization reaction tank 9, an inlet air pressure sensor 13, an outlet air pressure sensor 14, a frequency converter 15, and a control system.

[0033] An inlet air pressure sensor 13 is installed on the air inlet pipe 3 of the feed pump 4 to detect the air pressure at the pipe inlet in real time. An outlet air pressure sensor 14 is installed on the air outlet pipe 10 connecting the pulse bag dust collector 7 and the fan 11 to detect the air pressure at the pipe outlet in real time. A frequency converter 15 is electrically connected to both the feed pump 4 and the fan 11, and can adjust their operating frequencies separately. The control system is electrically connected to the inlet air pressure sensor 13, the outlet air pressure sensor 14, and the frequency converter 15, respectively, receiving air pressure signals from the two air pressure sensors and controlling the operation of the frequency converter 15 based on these signals.

[0034] The bottom outlet of the feeding hopper 1 is connected to the air inlet pipe 3 via the feeding pipe 2. After unpacking, the bleaching clay from the ton-sized bleaching clay bags 16 is placed into the feeding hopper 1, and then enters the air inlet pipe 3 via the feeding pipe 2. The bleaching clay and air mixture is fed into the bleaching clay storage tank 6 via the bleaching clay and air feeding pipe 5 of the feeding pump 4. The top of the bleaching clay storage tank 6 is connected to the pulse jet bag filter 7. Some of the bleaching clay enters the bleaching clay storage tank 6 directly, while the rest is adsorbed onto the surface of the dust collection bags in the pulse jet bag filter 7. The air pulse generator 17 on the pulse jet bag filter 7 corresponds to the dust collection bags. When the bleaching clay on the surface of the dust collection bags accumulates to a certain amount, the air pulse generator 17 is activated, impacting the bleaching clay on the surface of the dust collection bags, causing the bleaching clay to fall into the bleaching clay storage tank 6. The bottom of the bleaching clay storage tank 6 is connected to the decolorization reaction tank 9 via the bleaching clay adding pipe 8, used to add bleaching clay to the decolorization reaction tank 9. The outlet of the fan 11 is connected to the discharge pipe 12. The air filtered by the pulse bag filter 7 is discharged to the outside through the fan 11 and the discharge pipe 12.

[0035] During the operation of the device, the inlet air pressure sensor 13 and the outlet air pressure sensor 14 detect the air pressure at the inlet and outlet of the pipeline, respectively, and transmit the signals to the control system. The control system calculates the pressure difference between the two.

[0036] When the control system detects an increase in differential pressure, it increases the frequency of the fan 11 via the frequency converter 15 to increase the air speed and flush the pipe. At the same time, it interlocks to reduce the frequency of the feed pump 4 to reduce the amount of clay conveyed and prevent pipe blockage.

[0037] When the pressure difference is too low (which may lead to material shortage), the control system reduces the frequency of the fan 11 through the frequency converter 15 to achieve energy-saving operation.

[0038] When the pressure difference increases abnormally (which may be due to filter bag blockage or separator material accumulation), the control system reduces the frequency of the fan 11 through the frequency converter 15 and issues an alarm signal to prevent system overpressure.

[0039] When the pipeline pressure differential continues to rise, the control system automatically triggers a graded response: first, the frequency of fan 11 is increased (Level 1 response); if the pressure differential still does not decrease, the frequency of feed pump 4 is reduced (Level 2 response); if the pressure differential still exceeds the limit, the system shuts down in an emergency and alarms (Level 3 response).

[0040] The clay conveying and feeding device uses an inlet air pressure sensor 13 installed in the air inlet pipe 3 and an outlet air pressure sensor 14 installed in the air outlet pipe 10 to detect air pressure in real time and calculate the pressure difference. After receiving the signal, the control system adjusts the frequency of the feeding pump 4 and the blower 11 through the frequency converter 15. The frequency of the blower 11 is adjusted in conjunction with the frequency of the feeding pump 4 according to a preset ratio to maintain a stable gas-solid ratio in the pipeline. When the pressure difference increases, the frequency of the blower 11 is increased and the frequency of the feeding pump 4 is decreased to increase the air velocity to flush the pipeline and reduce material input. When the pressure difference is too low, the frequency of the blower 11 is reduced to save energy. When the pressure difference is abnormal or continues to rise, a graded response (including alarm and shutdown) is triggered to ensure stable system operation. White clay is fed from a ton-sized white clay bag 16 through a hopper 1 and a discharge pipe 2 into an air inlet pipe 3. It is then sent to a white clay storage tank 6 via a discharge pump 4 and a white clay plus air feeding pipe 5. Finally, it enters a decolorization reaction tank 9 through a white clay addition pipe 8. The air pulse generator 17 of the pulse bag dust collector 7 periodically impacts the dust collection bag, causing the adsorbed white clay to fall back into the white clay storage tank 6. The filtered air is discharged outdoors via a fan 11 and an exhaust pipe 12.

[0041] In existing technologies, the feeding speed of the feeding pump 4 is fixed, and there is no linkage control between the blower 11 and the feeding pump 4. This easily leads to blockages in parts such as the clay and air feeding pipe 5 due to the mismatch between air volume and feeding amount, requiring manual unblocking and severely affecting efficiency. This device uses differential pressure linkage adjustment between the inlet air pressure sensor 13 and the outlet air pressure sensor 14 to dynamically adapt the air volume of the blower 11 to the feeding amount of the feeding pump 4, reducing settling blockages at the source, eliminating the need for manual intervention, and significantly improving the continuity and efficiency of clay transportation.

[0042] Existing technologies lack automatic response mechanisms for system anomalies. When the filter bags of the pulse bag dust collector 7 become clogged or material accumulates in parts such as the clay storage tank 6, it can easily lead to risks such as system overpressure. This device, through pressure difference anomaly detection, can automatically reduce the frequency of the fan 11 and trigger an alarm. It also features a three-level emergency response mechanism, which can shut down the system in case the pressure difference continues to exceed the limit, ensuring the safety of system operation. Furthermore, it automatically reduces the frequency of the fan 11 when the pressure difference is too low, achieving energy-saving operation compared to the fixed airflow mode of existing technologies.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A clay conveying and discharging device, comprising a discharging hopper (1), a discharging pump (4), a clay storage tank (6), a pulse cloth bag dust collector (7), a fan (11), and a decoloring reaction tank (9), characterized in that, It also includes an inlet air pressure sensor (13), an outlet air pressure sensor (14), and a frequency converter (15); the inlet air pressure sensor (13) is installed on the air inlet pipe (3) of the feed pump (4) to detect the inlet air pressure of the pipe; the outlet air pressure sensor (14) is installed on the air outlet pipe (10) connecting the pulse bag dust collector (7) and the fan (11) to detect the outlet air pressure of the pipe; the frequency converter (15) is electrically connected to the feed pump (4) and the fan (11) respectively to adjust the frequency of the feed pump (4) and the fan (11).

2. The clay conveying and discharging device according to claim 1, characterized in that: The bottom outlet of the hopper (1) is connected to the air inlet pipe (3) through the feeding pipe (2). The white clay and air feeding pipe (5) of the feeding pump (4) sends white clay and air into the white clay storage tank (6). The top of the white clay storage tank (6) is connected to the pulse bag dust collector (7). The bottom of the white clay storage tank (6) is connected to the decolorization reaction tank (9) through the white clay adding pipe (8). The outlet of the blower (11) is connected to the discharge pipe (12) to discharge the dust-removed gas to the outside. The hopper (1) is used to receive white clay from the unpacked ton bags of white clay (16).

3. The clay conveying and discharging device according to claim 2, characterized in that: The air pulse generator (17) on the pulse bag dust collector (7) is set in correspondence with the dust collection bag to impact the white clay on the surface of the dust collection bag so that the white clay on the surface of the dust collection bag falls into the white clay storage tank (6).

4. The clay conveying and discharging device according to claim 3, characterized in that: It also includes a control system, which is electrically connected to the inlet wind pressure sensor (13), the outlet wind pressure sensor (14), and the frequency converter (15) respectively, and is used to receive wind pressure signals and control the operation of the frequency converter (15).

5. The clay conveying and discharging device according to claim 4, characterized in that: The control system can automatically adjust the frequency of the fan (11) to follow the frequency of the feed pump (4) according to the preset ratio based on the pressure difference between the inlet and outlet air pressure.

6. The clay conveying and discharging device according to claim 4, characterized in that: When the pressure difference increases, the control system increases the frequency of the fan (11) through the frequency converter (15) and at the same time interlocks to reduce the frequency of the feed pump (4).

7. The clay conveying and discharging device according to claim 4, characterized in that: When the pressure difference is too low, the control system reduces the frequency of the fan (11) through the frequency converter (15).

8. The clay conveying and discharging device according to claim 4, characterized in that: When the pressure difference increases abnormally, the control system reduces the frequency of the fan (11) through the frequency converter (15) and issues an alarm signal.

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