A kind of automatic unblocking system and method of silo pump

Abstract

The application discloses a kind of warehouse pump automatic unblocking systems and warehouse pump automatic unblocking methods, the system includes pulse back blowing unit, stock bin, stock bin discharge valve, warehouse pump sealing valve, pressure detection unit, warehouse pump, exhaust valve, air pipe, PLC controller and knock unit;Pulse back blowing unit is installed on the top of stock bin, stock bin discharge valve is installed in the outlet of stock bin, warehouse pump sealing valve is installed at the inlet of warehouse pump, pressure detection unit is installed on the top of warehouse pump, exhaust valve is installed on the top of warehouse pump, first conveying pipeline is connected with the outlet of warehouse pump, and knock unit is dispersedly installed on second conveying pipeline;The unblocking method monitors the discharging amount of warehouse pump by material level meter, monitors the pressure value in warehouse pump by pressure detection unit, and controls the organic cooperation between air inlet valve, blast valve, opening exhaust valve and knock unit according to the pressure value in warehouse pump by PLC controller to complete warehouse pump unblocking, and the application has the advantages of simple structure, low cost, safety, high degree of automation, low labor intensity and high working efficiency.

Description

Technical Field

[0001] This invention relates to the field of silo pump conveying technology, specifically to an automatic silo pump unblocking system and method. Background Technology

[0002] Powder materials are now widely transported by positive pressure silo pumps. However, as pressure vessels, silo pumps must be operated according to strict procedures to ensure safe and reliable use. During use, changes in material characteristics or the external environment may cause blockages in the silo pump. Manual unblocking can pose safety hazards due to improper operation, and it is also time-consuming and labor-intensive.

[0003] Therefore, it is necessary to provide a technical means to solve the above-mentioned defects. Summary of the Invention

[0004] In view of this, the purpose of this invention is to address the shortcomings of the prior art by proposing an automatic unblocking system and method for silo pumps. This addresses the technical problems in the prior art where silo pumps experience pipe blockage during transport, and where manual unblocking can lead to safety hazards due to improper operation, and where manual unblocking is time-consuming and labor-intensive.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an automatic silo pump unblocking system, comprising a silo for storing materials to be shipped, a silo pump for conveying materials in the silo, a compressed air pipeline, a PLC controller, and a level gauge:

[0006] The top of the silo is equipped with a pulse backflushing unit, which includes a housing, an air chamber, and multiple pleated filter elements. The air chamber contains multiple pulse valves, each with a jet pipe extending into the housing. Each jet pipe has multiple air jet holes spaced at equal intervals at one end within the housing. The housing contains multiple pleated filter elements, with one filter element correspondingly installed below each air jet hole. The housing has an exhaust port and an air inlet. The air inlet communicates with the silo and is used to separate excess gas within the silo and discharge it to the outside through the exhaust port, thereby reducing the silo's air pressure.

[0007] The level gauge is installed on the silo pump and is used to detect the amount of material fed into the silo pump;

[0008] The inlet of the silo pump is connected to the opening of the silo via a first conveying pipe for feeding material into the silo pump; the outlet of the silo pump is connected to a second conveying pipe for discharging material from the silo pump, wherein:

[0009] The top of the silo pump is equipped with a pressure detection unit for detecting the pressure inside the silo pump, and the pressure detection unit is interlocked with the alarm device.

[0010] The first conveying pipeline is sequentially equipped with a hopper discharge valve and a hopper pump sealing valve. The hopper discharge valve is connected to the hopper outlet and is used to open or close the hopper outlet. The hopper pump sealing valve is connected to the hopper pump inlet and is used to open or close the hopper pump inlet.

[0011] The second conveying pipeline is equipped with a shock unit, which consists of a solenoid valve and multiple vibrators. The multiple vibrators are spaced apart on the second conveying pipeline to assist in unblocking.

[0012] The compressed air pipeline includes a first sub-compressed air pipeline and a second sub-compressed air pipeline. The first sub-compressed air pipeline is connected to the silo pump through an air inlet valve and is used to supply air to the silo pump. The second sub-compressed air pipeline is connected to the second conveying pipeline through an auxiliary blowing valve and is used to assist in material conveying and also to clean and unclog the silo pump.

[0013] The PLC controller is used to provide system control functions for the automatic unblocking system of the silo pump.

[0014] Preferably, the silo pump further includes an exhaust valve, which is installed on the top of the silo pump. The outlet of the exhaust valve is connected to the top of the silo through a pipe for depressurizing the silo pump.

[0015] Preferably, the silo pump is also equipped with a safety valve, which is used to relieve pressure when the silo pump pressure is too high.

[0016] Preferably, the filtration area of ​​the pulse backflush unit is determined according to the following formula: A≥L / 3600V;

[0017] In the formula:

[0018] A represents the filtration area M² of the pulse backflush unit;

[0019] L represents the air volume handled (M³ / h);

[0020] V represents the filtration velocity in m / s.

[0021] Preferably, the pressure detection unit is connected to the PLC controller to send the pump pressure value signal to the PLC controller.

[0022] Preferably, the pressure detection unit is a pressure sensor.

[0023] Preferably, the volume of the silo is six times the volume of the silo pump.

[0024] On the other hand, the present invention provides an automatic de-clogging method for a silo pump using the automatic de-clogging system, the de-clogging principle of which is as follows:

[0025] S101. Before feeding material, first start the exhaust valve, the silo pump sealing valve and the silo feeding valve in sequence so that the material enters the silo pump from the silo.

[0026] S102. The level gauge detects the amount of material fed into the silo pump and transmits the detected feeding information to the PLC controller. The PLC controller first controls the silo discharge valve to close, and then after a delay of 3 to 5 seconds, controls the silo pump sealing valve and exhaust valve to close, and opens the exhaust valve.

[0027] S103. Open the air inlet valve to introduce air into the silo pump, and at the same time open the auxiliary blowing valve to start the auxiliary silo pump feeding.

[0028] S104. The pressure sensor detects the pressure value inside the silo pump and then transmits the pressure value to the PLC controller. The PLC controller controls the air inlet valve and the auxiliary blowing valve to close, while opening the exhaust valve and the shock unit to relieve pressure on the silo, so that the material blocked in the first and second conveying pipes is continuously loosened and flows back, thus clearing the blockage in the silo pump.

[0029] Preferably, step S104 further includes the following steps:

[0030] When the pressure sensor detects that the pressure inside the silo pump has reached the predetermined pipe blockage pressure, the PLC controller issues an alarm to alert the staff.

[0031] When the pressure sensor detects that the pressure inside the silo pump has reached the predetermined deblocking pressure value, the PLC controller closes the air inlet valve and the auxiliary blowing valve, while opening the exhaust valve and the shock unit to depressurize the silo.

[0032] When the pressure detection unit detects that the pressure value of the chamber pump is 0, it automatically closes the exhaust valve and opens the intake valve.

[0033] When the pressure of the silo pump reaches the predetermined delivery pressure value and stops increasing, it indicates that the blockage has been cleared.

[0034] If the pressure of the silo pump exceeds the predetermined delivery pressure value and continues to rise, it indicates that the delivery pipeline is not cleared.

[0035] When the pressure inside the silo pump reaches the blockage pressure again, the system automatically starts the unblocking procedure again, repeating this cycle until the unblocking process for feeding is complete.

[0036] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0037] 1. This invention mainly adopts an automated mode to clear blockages in the silo pump, avoiding the safety hazards caused by improper operation during manual clearing, thus greatly improving the efficiency of the silo pump in conveying materials and also greatly enhancing the stability of the silo pump during the material conveying process.

[0038] 2. The automatic unblocking system for silo pumps provided by this invention can monitor the material discharge of the silo pump through a level gauge, monitor the internal pressure of the silo pump through a pressure detection unit to detect the blockage of the silo pump in a timely manner, and control the organic cooperation between the air inlet valve, the auxiliary blowing valve, the air venting valve and the shock unit through a PLC controller. Based on the siphon effect principle, the blocked material is continuously loosened and returned to complete the unblocking of the silo pump. It has a simple structure, low cost, safety, high degree of automation, low labor intensity and high work efficiency.

[0039] 3. In addition, the compressed air pipeline is connected to the conveying pipeline. The air source is damaged during the material conveying process, so the conveying force is weaker towards the end of the conveying pipeline. Therefore, by using a blower valve and a shock unit in the compressed air pipeline to assist the material conveying of the silo pump, it also plays a role in cleaning and unblocking the silo pump, which can further effectively prevent material blockage. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of an automatic unclogging system for a silo pump proposed in this invention;

[0041] Figure 2 This is a schematic diagram of the pulse backflushing unit in an automatic unblocking system for a silo pump proposed in this invention.

[0042] Legend:

[0043] 1-Pulse backflush unit, 2-Hopper, 3-Hopper discharge valve, 4-Hopper pump sealing valve, 5-Safety valve, 6-Pressure detection unit, 7-Level gauge, 8-Inlet valve, 9-Auxiliary blowing valve, 10-Exhaust valve, 11-Hopper pump, 12-Second conveying pipeline, 13-Shock unit, 14-Compressed air pipeline, 15-First sub-compressed air pipeline, 16-Second sub-compressed air pipeline, 17-First conveying pipeline, 104-Box body, 101-Air manifold, 102-Pulse valve, 103-Folded filter element, 105-Pulse blowing branch pipe. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, 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 invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] Please see Figure 1 This is an embodiment of the present invention, and the automatic de-clogging system of the silo pump 11 in this embodiment is used for material conveying. The automatic de-clogging system of the silo pump 11 in this embodiment includes a silo 2 for storing materials to be sent, a silo pump 11 for conveying materials in the silo 2, a compressed air pipeline 14, a PLC controller, and a level gauge 7. The components of the automatic de-clogging system of the silo pump 11 are further described below:

[0047] For reference Figure 2 and combined Figure 1 The top of the hopper 2 is equipped with a pulse backflushing unit 1, which includes a housing 104, an air tank 101, and multiple pleated filter elements 103. Multiple pulse valves 102 are installed inside the air tank, and the jetting branch pipe 105 of each pulse valve 102 extends into the housing 104. Multiple jet nozzles are equidistantly located at one end of the jetting branch pipe 105 within the housing 104. Multiple pleated filter elements 103 are installed inside the housing, with one pleated filter element 103 corresponding to the bottom of each jet nozzle. The housing 1 is equipped with an exhaust port and an air inlet. The air inlet is connected to the hopper 2 and is used to discharge excess gas from the hopper 2 to the outside through the exhaust port after solid-gas separation, thereby reducing the pressure inside the hopper. During solid-gas separation, some solid powder adheres to the pleated filter elements 103. The pulse valves 102 control the compressed air in the air tank 101 to blow off the solid powder from the pleated filter elements 103, ensuring the permeability of the pleated filter elements 103.

[0048] The level gauge 7 is installed on the silo pump 11 to detect the amount of material fed into the silo pump 11;

[0049] The inlet of the silo pump 11 is connected to the opening of the silo 2 via a first conveying pipe 17 for feeding material into the silo pump 11; the outlet of the silo pump 11 is connected to a second conveying pipe 12 for discharging material from the silo pump 11, wherein:

[0050] A pressure detection unit 6 for detecting the pressure inside the silo pump 11 is provided on the top of the silo pump 11. The pressure detection unit 6 is interlocked with the alarm device.

[0051] The first conveying pipeline 17 is sequentially equipped with a hopper discharge valve 3 and a hopper pump sealing valve 4. The hopper discharge valve 3 is connected to the outlet of the hopper 2 and is used to open or close the outlet of the hopper 2. The hopper pump sealing valve 4 is connected to the inlet of the hopper pump 11 and is used to open or close the inlet of the hopper pump 11.

[0052] A shock unit 13 is provided on the second conveying pipe 12. The shock unit 13 includes a solenoid valve and multiple vibrators. The multiple vibrators are spaced apart on the second conveying pipe 12 to assist in unblocking.

[0053] The compressed air pipeline 14 includes a first sub-compressed air pipeline 15 and a second sub-compressed air pipeline 16. The first sub-compressed air pipeline 15 is connected to the silo pump 11 through the air inlet valve 8 and is used to supply air to the silo pump 11. The second sub-compressed air pipeline 16 is connected to the second conveying pipeline 12 through the blow-assisted valve 9 and is used to assist in material conveying.

[0054] The PLC controller is used to provide system control functions for the automatic unblocking system of the silo pump 11.

[0055] Furthermore, the silo pump 11 also includes an exhaust valve 10, which is installed on the top of the silo pump 11. The outlet of the exhaust valve 10 is connected to the top of the silo 2 through a pipe for depressurizing the silo pump 11. Accordingly, the internal pressure of the silo pump 11 can be quickly maintained in a balanced and stable manner.

[0056] Furthermore, the silo pump 11 is also equipped with a safety valve 5. The safety valve 5 is used to relieve pressure when the pressure of the silo pump 11 is too high, thus playing a safety protection role in the material conveying system of the silo pump 11. When the system pressure exceeds the specified value, the safety valve 5 opens, discharging a portion of the gas and / or fluid in the system into the atmosphere / outside the pipeline, so that the system pressure does not exceed the allowable value, thereby ensuring that the system does not have an accident due to excessive pressure.

[0057] In addition, the filter area of ​​pulse backflush unit 1 is determined according to the following formula: A≥L / 3600V;

[0058] In the formula:

[0059] A represents the filtration area M² of pulse backflush unit 1;

[0060] L represents the air volume handled (M³ / h);

[0061] V represents the filtration velocity in m / s.

[0062] The filtration area of ​​the pulse backflushing unit 1 should not be less than the filtration area calculated in the dust removal design manual. Therefore, the filtration area corresponding to the pulse backflushing unit 1 should be accurately calculated in the automatic de-clogging system of the silo pump 11. Moreover, the filtration area of ​​the pulse backflushing unit 1 is reasonable, which can effectively discharge excess gas in the silo 2 in a timely manner and prevent back pressure from being generated when the silo pump 11 depressurizes the silo 2 through the exhaust valve 10, thus affecting the de-clogging effect.

[0063] Furthermore, the pressure detection unit 6 is connected to the PLC controller to send the pressure value signal of the silo pump 11 to the PLC controller. Accordingly, the PLC controller can accurately control the silo pump 11 to remove blockages by monitoring the pressure value signal of the silo pump 11.

[0064] Specifically, pressure detection unit 6 is a pressure sensor.

[0065] Ideally, to prevent the pressure of the silo pump 11 from failing to drop rapidly due to insufficient volume during depressurization, thus failing to achieve the deblocking effect, the volume of the silo 2 is six times that of the silo pump.

[0066] On the other hand, the present invention provides an automatic unclogging method for the silo pump 11 using the automatic unclogging system, the unclogging principle of which is as follows:

[0067] S101. Before feeding, first start the exhaust valve 10, the silo pump sealing valve 4 and the silo discharge valve 3 in sequence so that the material enters the silo pump 11 from the silo 2.

[0068] S102, the level gauge 7 detects the amount of material fed into the silo pump 11 and transmits the detected feeding information to the PLC controller. The PLC controller first controls the silo discharge valve 3 to close, and then after a delay of 3 to 5 seconds, controls the silo pump sealing valve 4 and the exhaust valve 10 to close, and opens the exhaust valve 10. This ensures that all the material in the discharge pipe between the silo discharge valve 3 and the silo pump sealing valve 4 enters the silo pump 11.

[0069] S103. Open the air inlet valve 8 to introduce air into the silo pump 11, and at the same time open the auxiliary blowing valve 9 to start the auxiliary silo pump 11 pressurization and feeding.

[0070] S104. The pressure sensor detects the pressure value inside the silo pump 11 and then transmits the pressure value to the PLC controller. The PLC controller controls the air inlet valve 8 and the blowing valve 9 to close, while opening the exhaust valve 10 and the shock unit 13 to relieve pressure on the silo 2, so that the material blocked in the first conveying pipe 17 and the second conveying pipe 12 is continuously loosened and flows back, thus realizing the unblocking of the silo pump 11.

[0071] Furthermore, step S104 also includes the following steps:

[0072] When the pressure sensor detects that the pressure inside the silo pump 11 has reached the predetermined blockage pressure value, the PLC controller issues an alarm to alert the staff, enabling the staff to promptly detect the material conveying status of the silo pump 11.

[0073] When the pressure sensor detects that the pressure inside the silo pump 11 has reached the predetermined unblocking pressure value, the PLC controller controls the closing of the air inlet valve 8 and the blowing valve 9, while opening the exhaust valve 10 and the shock unit 13 to depressurize the silo 2.

[0074] When the pressure detection unit 6 detects that the pressure value of the chamber pump 11 is 0, it closes the exhaust valve 10 and opens the intake valve 8 again.

[0075] When the pressure of the silo pump 11 reaches the predetermined delivery pressure value and stops increasing, it indicates that the blockage has been cleared.

[0076] If the pressure of the silo pump 11 exceeds the predetermined delivery pressure value and continues to rise, it indicates that the delivery pipeline is not cleared.

[0077] When the pressure inside the silo pump 11 reaches the blockage pressure again, the system automatically starts the unblocking procedure again, and repeats this cycle until the unblocking process for feeding is completed.

[0078] The specific working principle is as follows:

[0079] In this invention, when compressed air is introduced into the silo pump 11 for feeding, if the silo pump 11 becomes clogged, the pressure inside the silo pump 11 will continuously rise and exceed the normal conveying pressure. The pressure detection unit 6 can detect the increased pressure inside the silo pump 11. When the increased pressure reaches the clogged pressure, the unblocking procedure is initiated through an interlock and an alarm is issued. When the increased pressure reaches the set unblocking pressure, the air inlet valve 8 is closed and the exhaust valve 10 is opened through an interlock, releasing the pressure inside the silo pump 11 to the silo 2. According to the siphon effect principle, the material clogged in the conveying pipe will move towards the silo pump 11. In addition, the vibration unit 13 on the second conveying pipe 12 is activated, and the vibration generated by multiple vibrators makes it easier for the clogged material to loosen and move towards the silo pump 11. At the same time, because the unblocking of the silo pump 11 creates pressure on the silo 2, the pulse backflushing unit... Unit 1 promptly discharges gas from silo 2 to reduce its pressure and prevent positive pressure from forming. Simultaneously, the pulse PLC controller activates pulse valve 102, which controls compressed air in air tank 101 to be ejected through jet branch pipe 105, blowing off solid powder adsorbed on pleated filter element 103 to ensure its permeability and filtration. When pressure detection unit 6 detects that the pressure of silo pump 11 is 0, it closes exhaust valve 10 and reopens air inlet valve 8. When the pressure of silo pump 11 reaches the set conveying pressure and stops rising, it indicates that the unblocking is complete. If the pressure of silo pump 11 exceeds the set conveying pressure and continues to rise, it indicates that the conveying pipeline is not cleared. When the pressure in silo pump 11 reaches the blockage pressure again, the system automatically restarts the unblocking program, repeating this cycle until unblocking is complete. This method effectively avoids safety hazards caused by manual unblocking errors and can promptly detect and clear blockages, thus achieving safe and efficient production.

[0080] It should be noted that the diameter of the exhaust valve 10 in this application should not be lower than the pipe diameter found in the pipe diameter selection calculation table. The corresponding flow rate can be calculated based on the volume and depressurization time of different chamber pumps 11, and then the corresponding pipe diameter can be found through the pipe diameter selection calculation table. The diameter of the exhaust valve 10 needs to be not lower than the found pipe diameter to prevent the instantaneous depressurization from being insufficient due to the pipe diameter being too small, which would affect the deblocking effect.

[0081] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic unclogging system for a silo pump, characterized in that, Includes a silo (2) for storing materials to be shipped, a silo pump (11) for conveying materials in the silo (2), compressed air pipelines, a PLC controller, and a level gauge (7): The top of the silo (2) is provided with a pulse backflush unit (1), which includes a housing (104), an air tank (101), and multiple pleated filter elements (103). The air tank (101) is provided with multiple pulse valves (102), and the jet pipe (105) of each pulse valve (102) extends into the housing (104). The jet pipe (105) is provided with multiple jet holes at equal intervals at one end of the jet pipe (104) inside the housing (104). The housing (104) is provided with multiple pleated filter elements (103), and a pleated filter element (103) is installed below each jet hole. The housing (104) is provided with an exhaust hole and an air inlet. The air inlet is connected to the silo (2) and is used to discharge excess gas in the silo (2) to the outside through the exhaust hole after solid-gas separation, thereby reducing the air pressure in the silo (2). The level gauge (7) is installed on the silo pump (11) and is used to detect the amount of material fed into the silo pump; The inlet of the silo pump (11) is connected to the opening of the silo (2) through a first conveying pipe (17) for feeding the silo pump (11); the outlet of the silo pump (11) is connected to a second conveying pipe (12) for discharging the silo pump (11), wherein: The top of the silo pump (11) is provided with a pressure detection unit (6) for detecting the pressure inside the silo pump (11), and the pressure detection unit (6) is interlocked with the alarm device. The first conveying pipeline (17) is sequentially provided with a hopper discharge valve (3) and a hopper pump sealing valve (4). The hopper discharge valve (3) is connected to the outlet of the hopper (2) and is used to open or close the outlet of the hopper (2). The hopper pump sealing valve (4) is connected to the inlet of the hopper pump (11) and is used to open or close the inlet of the hopper pump (11). The second conveying pipe (12) is provided with a shock unit (13), which includes a solenoid valve and multiple vibrators. The multiple vibrators are spaced apart on the second conveying pipe (12) to assist in unblocking. The compressed air pipeline includes a first sub-compressed air pipeline (15) and a second sub-compressed air pipeline (16). The first sub-compressed air pipeline (15) is connected to the silo pump (11) through an air inlet valve (8) and is used to supply air to the silo pump. The second sub-compressed air pipeline (16) is connected to the second conveying pipeline (12) through an auxiliary blowing valve (9) and is used to assist in material conveying. The PLC controller is used to provide system control functions for the automatic unblocking system of the silo pump; the pressure detection unit (6) is connected to the PLC controller to send the pressure value signal of the silo pump (11) to the PLC controller; The silo pump (11) is also equipped with a safety valve (5), which is used to relieve pressure when the silo pump pressure is too high; The silo pump (11) also includes an exhaust valve (10), which is installed on the top of the silo pump (11). The outlet of the exhaust valve (10) is connected to the top of the silo (2) through a pipe for depressurizing the silo pump (11).

2. The automatic unclogging system for a silo pump according to claim 1, characterized in that, The filtration area of ​​the pulse backflush unit (1) is determined according to the following formula: A≥L / 3600V; In the formula: A is the filtration area M² of the pulse backflush unit (1); L represents the air volume handled (M³ / h); V represents the filtration velocity in m / s.

3. The automatic unclogging system for a silo pump according to claim 1, characterized in that, The pressure detection unit (6) is a pressure sensor.

4. The automatic unclogging system for a silo pump according to claim 1, characterized in that, The volume of the silo (2) is six times that of the silo pump (11).

5. A method for automatically unclogging a silo pump using the automatic unclogging system for silo pumps according to claim 1, characterized in that, Includes the following steps: S101. Before feeding material, first start the exhaust valve, the silo pump sealing valve and the silo feeding valve in sequence so that the material enters the silo pump from the silo. S102. The level gauge detects the amount of material fed into the silo pump and transmits the detected feeding information to the PLC controller. The PLC controller first controls the silo discharge valve to close, and then after a delay of 3 to 5 seconds, controls the silo pump sealing valve and exhaust valve to close, and opens the exhaust valve. S103. Open the air inlet valve to introduce air into the silo pump, and at the same time open the auxiliary blowing valve to start the auxiliary silo pump feeding. S104. The pressure sensor detects the pressure value inside the silo pump and then transmits the pressure value to the PLC controller. The PLC controller controls the air inlet valve and the auxiliary blowing valve to close, while opening the exhaust valve and the shock unit to relieve pressure on the silo, so that the material blocked in the first and second conveying pipes is continuously loosened and flows back, thus clearing the blockage in the silo pump.

6. The automatic unclogging method for a silo pump according to claim 5, characterized in that, Step S104 also includes the following steps: When the pressure sensor detects that the pressure inside the silo pump has reached the predetermined pipe blockage pressure, the PLC controller issues an alarm to alert the staff. When the pressure sensor detects that the pressure inside the silo pump has reached the predetermined unblocking pressure value, the PLC controller closes the air inlet valve and the auxiliary blowing valve, while opening the exhaust valve and the shock unit to depressurize the silo. When the pressure detection unit detects that the pressure value of the chamber pump is 0, it closes the exhaust valve and reopens the intake valve. When the pressure of the silo pump reaches the predetermined delivery pressure value and stops increasing, it indicates that the blockage has been cleared. If the pressure of the silo pump exceeds the predetermined delivery pressure value and continues to rise, it indicates that the delivery pipeline is not cleared. When the pressure inside the silo pump reaches the blockage pressure again, the system automatically starts the unblocking procedure again, repeating this cycle until the unblocking process for feeding is complete.

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