Unloader

Abstract

The utility model discloses an unloader. The discharger comprises a shell, blades and an air injection device. A containing cavity is defined by the shell, a feeding port and a discharging port are formed in the shell, and the feeding port and the discharging port are located in the two sides of the containing cavity and communicate with the containing cavity. The blades are installed in the containing cavity, and the shell is further provided with an air blowing opening communicating with the containing cavity. The air spraying device communicates with the air blowing opening and is used for spraying air into the containing cavity through the air blowing opening. The air injection device can blow air to the blades, so that materials adhered to the blades can be blown by the air injected by the air injection device and are not adhered to the blades any more, and the blades are cleaned. Thus, it can be ensured that the materials adhering to the blades can be cleaned in time, the problem that the viscous materials continuously adhere to the unloader and block the unloader, and consequently equipment operation is not smooth or stopped is solved, and the operation stability of the unloader is improved.

Description

Technical Field

[0001] The present application relates to the technical field of dischargers, and more specifically, to a discharger. Background Art

[0002] Rotary dischargers are widely used in environmental protection, warehousing, and transportation. However, in some applications involving highly hygroscopic and sticky powders, the powder easily adheres to the rotor blades, causing blockage and ultimately equipment operation problems or even termination. Consequently, the effectiveness of rotary dischargers in applications involving sticky powders varies, and operational stability is generally poor. Utility Model Content

[0003] An embodiment of the present application provides a discharger.

[0004] The discharger according to the present embodiment includes a housing, blades, and an air jet device. The housing defines a receiving chamber, and is provided with an inlet and an outlet located on either side of the receiving chamber and communicating with the chamber. The blades are mounted within the receiving chamber, and the housing further defines an air blow port communicating with the chamber. The air jet device is connected to the air blow port and is configured to inject air into the receiving chamber through the air blow port.

[0005] In certain embodiments, the air port is located on at least one of an axial end surface or a rotational surface of the housing.

[0006] In certain embodiments, the air blowing port is communicated with the discharge port.

[0007] In some embodiments, the aperture of the air port is in the range of [6 mm, 10 mm].

[0008] In some embodiments, the jet device includes an jet pipe, a blowing air source, a pressure regulating valve and a solenoid valve. A jet head is provided at one end of the jet pipe, and the blowing head is installed at the blowing port. The other end of the jet pipe is connected to the blowing air source. The pressure regulating valve and the solenoid valve are installed on the jet pipe. The pressure regulating valve is used to adjust the blowing pressure of the jet pipe, and the solenoid valve is used to control the switch of the jet pipe.

[0009] In some embodiments, the blowing head is detachably mounted on the blowing port, and the blowing head adopts a standard module.

[0010] In certain embodiments, the gas stored in the blowing gas source is compressed air or compressed inert gas.

[0011] In certain embodiments, the start and stop of the jetting device is cyclically controlled according to a preset frequency, and the preset frequency is determined according to the characteristics of the material transported by the discharger.

[0012] In some embodiments, the discharge port is connected to a feed pipe, the feed pipe is connected to downstream processing equipment, a pressure sensor is provided on the feed pipe, and the start and stop of the jet device are controlled according to the pressure of the feed pipe and a preset pressure threshold.

[0013] In some embodiments, the blowing pressure ranges from [0.3 MPa, 0.8 MPa].

[0014] In certain embodiments, the range of the air consumption of the air jet device is [0.05m 3 / h, 0.1m 3 / h].

[0015] The discharger of the present embodiment is provided with an air jet device, a housing, and blades. The blades are located within a receiving chamber of the housing, and an air port is provided on the housing, connecting the receiving chamber and the air jet device, allowing the air jet device to blow air into the receiving chamber through the air port. The blades are located within the receiving chamber, so the air jet device can blow air into the blades, causing material adhering to the blades to be blown away by the gas ejected by the air jet device and no longer adhere to the blades, thereby completing the cleaning of the blades. This ensures that material adhering to the blades can be cleaned promptly, preventing sticky material from continuously adhering to the discharger and clogging the discharger, causing equipment operation problems or termination, thereby improving the operational stability of the discharger.

[0016] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic structural diagram of a discharger according to certain embodiments of the present application;

[0019] Figure 2 yes Figure 1 A schematic structural diagram of the discharger from another angle is shown.

[0020] Description of main component symbols:

[0021] 100. Unloader;

[0022] 10. Shell; 11. Accommodating cavity; 12. Feed port; 13. Discharge port; 14. Air blow port; 15. Shaft end face; 16. Rotating surface;

[0023] 20. Blade, R1, rotation direction;

[0024] 30. Injection device; 31. Injection pipe; 32. Injection air source; 33. Pressure regulating valve; 34. Solenoid valve; 35. Injection head;

[0025] 40. Feeding pipe; 50. Pressure sensor. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and should not be understood as limiting the embodiments of the present application.

[0027] Rotary dischargers are widely used in the flow control and conveying of bulk and powder materials. They are essential equipment for controlling the flow of bulk and powder materials. They generally serve two primary functions: first, they control the speed at which the material falls by its own weight, thus controlling flow and even metering; second, they provide air isolation, isolating the upper and lower compartments from each other in terms of pressure and gas flow. Rotary dischargers are widely used in environmental protection, warehousing, and conveying.

[0028] Granular materials, due to their inherent properties such as high fluidity and low adhesion, are ideal for this application. Rotary dischargers offer stable, reliable, and mature technology under these conditions. However, in some applications involving powders with high hygroscopicity and adhesion, rotary dischargers present shortcomings. Powders easily adhere to the discharger, causing unstable volume in the rotary chamber of the blades. This can lead to blockages, abnormal noise, reduced flow, and a high rate of equipment failure. Low flow rates can cause erratic flow control, preventing precise flow control. High flow rates can lead to equipment blockage, material flow cessation, overload, wear, and motor burnout. Consequently, the effectiveness of rotary dischargers in applications involving sticky powders varies, and operational stability is generally poor. In practice, blockages caused by sticky powder often require on-site disassembly and cleaning, resulting in harsh working conditions and high workloads. These applications are therefore subject to significant criticism by operators and maintenance personnel.

[0029] To this end, many attempts have been made to improve the anti-sticking properties of the rotary discharger's star-shaped rotary bin, using measures such as mechanical vibration, anti-sticking coatings, temperature-controlled moisture-proofing, fluidized backflushing, and structural modifications. While these improvements have achieved some results, they also come with drawbacks such as high equipment cost, high operating expenses, complex structure, high failure rate, and difficulty in repair and maintenance. These improvements haven't completely resolved the core issue of sticky powders sticking to the rotary discharger and affecting its operational stability. Further improvements are needed to ensure the operational reliability of rotary dischargers with sticky powders.

[0030] In order to solve the above problems, the present invention provides a discharger 100. The discharger 100 of the present invention will be described in detail below:

[0031] See also Figure 1 and Figure 2 The embodiment of the present application provides a discharger 100, which includes a housing 10, blades 20, and an air jet device 30. The housing 10 encloses a receiving chamber 11, and is provided with an inlet 12 and an outlet 13. The inlet 12 and the outlet 13 are located on both sides of the receiving chamber 11 and are in communication with the receiving chamber 11. The blades 20 are installed in the receiving chamber 11, and the housing 10 is further provided with an air blow port 14 in communication with the receiving chamber 11. The air jet device 30 is in communication with the air blow port 14 and is used to eject air into the receiving chamber 11 through the air blow port 14.

[0032] Specifically, the discharger 100 is the primary device for dust removal, air supply, and other feeding equipment. It is suitable for both powdered and granular materials. It can quickly and accurately discharge materials from containers, significantly improving work efficiency. The discharger 100 includes a standard discharger 100, a pressure-resistant discharger 100, a high-temperature-resistant discharger 100, and a star-shaped discharger 100.

[0033] The housing 10 is a structure with a cavity (i.e., a housing chamber 11) for accommodating other components. Other components of the discharger, such as the blades 20, can be installed within the housing 10. The housing 10 can be used to isolate the other components of the discharger from the outside world, preventing them from being easily damaged by external forces and preventing external impurities, such as dust, from entering and affecting their normal operation. The housing 10 is provided with an inlet 12 and a discharge port 13. The inlet 12 is connected to the material silo, and the discharge port 13 is connected to the discharge pipe 40, which is connected to the downstream processing equipment. The material in the silo enters the housing chamber 11 through the inlet 12, then leaves the housing chamber 11 through the discharge port 13 and enters the discharge pipe 40 and the downstream processing equipment in sequence, thus completing the material transportation.

[0034] The blades 20 are rotatably mounted on the housing 10 and located within the accommodating chamber 11, wherein the direction of rotation of the blades 20 is indicated by R1. During the material transport process, the blades 20 can rotate continuously, and a rotary bin can be formed between the two connected blades 20. After the material enters the accommodating chamber 11 from the feed port 12, it will enter the rotary bin. As the blades 20 rotate, the rotary bin will be connected to the discharge port 13, and the material in the rotary bin can be moved to the discharge port 13, thereby ensuring that the material can be smoothly discharged from the silo. The volume of the rotary bin is limited, and therefore the amount of material transported by the rotary bin each time is also limited. In this way, the discharger 100 can achieve quantitative and continuous unloading, avoiding waste or shortage of material during the unloading process. In addition, metering can be achieved by determining the number of rotations of the blades 20. At the same time, the material transportation speed can be controlled by controlling the rotation speed of the blades 20, thereby achieving a flow control effect. In the pneumatic conveying system, the blades 20 also serve as a seal. It can effectively prevent air from being sucked in from the discharge port during the pneumatic conveying process, thereby ensuring normal discharge of the discharger 100.

[0035] The housing 10 is also provided with an air outlet 14 connected to the air jet device 30, which is in communication with the accommodating chamber 11. The air jet device 30 may include an air source 32 and an air jet pipe 31. The air jet pipe 31 is connected to the air source 32 and the air outlet 14 at both ends. The air source 32 stores high-pressure gas, which flows along the air jet pipe 31 and enters the accommodating chamber 11 through the air jet port. After entering the accommodating chamber 11, the gas impacts the material it contacts, driving the material on the blades 20 within the accommodating chamber 11 to move. In this way, the air jet device 30 can blow air toward the blades 20 within the accommodating chamber 11. Even if material is stuck to the blades 20, the gas ejected by the air jet device 30 can blow the material away, so that the material no longer adheres to the blades 20, thereby completing the air cleaning of the blades 20. Among them, the optimal position and angle of the air outlet 14 can be obtained in advance based on the specific structural test of the discharger 100 to ensure that the position and angle of the air outlet 14 are reasonably selected, so that the contact area between the gas ejected by the jet device 30 and the blade 20 is larger, and the force of the gas blowing the material is greater, thereby being able to effectively clean the blade 20.

[0036] At this time, the jet device 30 is located outside the shell 10, so that the setting of the jet device 30 does not affect the layout of the various components inside the shell 10, which is convenient for the installation of the jet device 30, and the jet device 30 can be replaced or maintained online under the condition that other original parts of the discharger 100 are in continuous operation. At the same time, the setting method of the jet device 30 being located outside the shell 10 allows the present application to be directly used in the existing old discharger 100. It only requires a simple modification and upgrade of the old discharger 100, opening an air blowing port 14 on the shell 10, and installing the jet device 30 outside the shell 10, to form the discharger 100 of the present application and realize the self-cleaning function without replacing the entire discharger 100. In this way, the scope of use of the present application is wide and the threshold for use is low.

[0037] In this way, the present application can utilize the jet device 30 to self-clean the blade 20, so that the material adhering to the blade 20 can be cleaned in time, thereby solving the problem of sticky powder continuously adhering to the rotary bin of the discharger 100 and blocking the discharger 100, causing the equipment to operate poorly or terminate.

[0038] At the same time, any material adhering to the blades 20 can be cleaned, so that the cleaned rotary bin will no longer adhere to material during the current transport process, and the rotary bin can transport materials at almost the same volume each time. For example, if the air outlet 14 is connected to the discharge port 13, the jet device 30 can jet clean the rotary bin while the rotary bin is connected to the discharge port 13. This means that after each round of feeding, the jet device 30 will clean the rotary bin, so that no material is adhered to the rotary bin. In this way, when the rotary bin carries out the next round of feeding and is connected to the feed port 12 again, the rotary bin can accommodate 100% of the volume of the material input from the feed port 12, that is, achieve 100% dust adhesion. Therefore, the present application can also solve the problem of the continuous stability of the volume of the rotary bin of the discharger 100, ensuring the discharger 100's precise flow control and metering functions, and preventing the rotary bin's volume from fluctuating due to dust adhesion and losing its flow control and metering functions.

[0039] In addition, the present application improves the function of the original discharger 100 without increasing the structural complexity of the original discharger 100, and the daily maintenance is simple, and can be quickly repaired and maintained online without stopping the machine.

[0040] The discharger 100 of the embodiment of the present application is provided with an air jet device 30, a housing 10, and a blade 20. The blade 20 is located within the accommodating chamber 11 of the housing 10. The housing 10 is provided with an air blow port 14 connecting the accommodating chamber 11 and the air jet device 30, so that the air jet device 30 can blow air into the accommodating chamber 11 through the air blow port 14. The blade 20 is located within the accommodating chamber 11, so the air jet device 30 can blow air into the blade 20, so that the material adhering to the blade 20 can be blown away by the gas ejected by the air jet device 30 and no longer adhere to the blade 20, thereby completing the cleaning of the blade 20. In this way, it is possible to ensure that the material adhering to the blade 20 can be cleaned in a timely manner, thereby preventing the sticky material from continuously adhering to the discharger 100 and blocking the discharger 100, causing the equipment to operate poorly or terminate, thereby improving the operational stability of the discharger 100.

[0041] See also Figure 1 and Figure 2 In some embodiments, the blowing port 14 is located on at least one of the axial end surface 15 or the rotating surface 16 of the housing 10 .

[0042] Specifically, the axial end surfaces 15 of the housing 10 generally refer to the flat surfaces located at both ends of the housing 10 that connect to the shaft. These surfaces serve as the contact surface between the housing 10 and the shaft, providing support and transmitting force. The surface of revolution 16 of the housing 10 refers to the curved surface formed by rotating a straight line or planar curve around its axis of revolution.

[0043] The number of the air blowing ports 14 can be one or more, which is specifically determined according to the number of the air jet devices 30 . The number of the air jet devices 30 can also be one or more, which is specifically determined according to the cleaning requirements and the structure of the housing 10 .

[0044] The air port 14 may be located on at least one of the axial end surface 15 or the rotating surface 16 of the housing 10. Specifically, the air port 14 may be located only on the axial end surface 15 of the housing 10, or only on the rotating surface 16 of the housing 10. Alternatively, there may be multiple air ports 14, some of which are located on the axial end surface 15 of the housing 10 and some of which are located on the rotating surface 16 of the housing 10. In this case, the position of the air jet device 30 may be determined based on the structure of the housing 10, whether it is directed toward the axial end surface 15 or the rotating surface 16 of the housing 10. The position of the air port 14 may then be determined based on the position of the air jet device 30. Preferably, the air port 14 is located on the axial end surface 15 of the housing 10, so that gas can be used to clean the blades 20 and the rotating chamber formed by the blades 20 passing through the air port 14 in the axial direction of rotation.

[0045] In this way, the air outlet 14 is set on the rotating surface 16 or the axial end surface 15 of the shell 10 to ensure that the gas ejected from the air outlet 14 can blow toward the blade 20, so as to blow the material adhered to the blade 20 so that the material no longer adheres to the blade 20, thereby achieving cleaning of the blade 20.

[0046] See also Figure 1 and Figure 2 In some embodiments, the air port 14 is connected to the discharge port 13, that is, the air port 14 is located in the area of ​​the housing 10 near the discharge port 13. This allows the air blown in by the air port 14 to directly enter the discharge port 13 during the rotation of the blades 20. In this way, after the air port 14 blows the material adhering to the blades 20, the material can directly enter the discharge port 13 under the action of gravity or the force of the air, without falling back onto the blades 20. This ensures that the cleaning effect of the air jet device 30 is more thorough.

[0047] Preferably, the air port 14 is located in the axial end face 15 of the housing 10, the air port 14 is connected to the discharge port 13, and the central axis of the air port 14 coincides with the central axis of the axial end face 15. The central axis of the axial end face 15 usually coincides with the central axis of the discharge port 13, so the central axis of the air port 14 also coincides with the central axis of the axial end face 15. The diameter of the discharge port 13 is usually larger than the distance between the tops of two adjacent blades 20, that is, the diameter of the discharge port 13 is usually larger than the size of the opening of the rotary bin. In this way, it can be ensured that the material blown by the gas in the rotary bin passing through the air port 14 can fall directly into the discharge port 13, rather than falling into other positions of the housing 10 or the blades 20, thereby ensuring that the cleaning effect of the jet device 30 is more thorough.

[0048] See also Figure 1 and Figure 2 In some embodiments, the aperture of the air port 14 has a value range of [6 mm, 10 mm], for example, 6 mm, 7.1 mm, 7.6 mm, 8 mm, 8.6 mm, 9.7 mm or 10 mm. Preferably, the aperture of the air port 14 is 8 mm. If the aperture of the air port 14 is too small, for example, 5 mm, the volume of the gas entering the accommodating chamber 11 may be too small, making it difficult for the gas to achieve a more thorough cleaning of the blades 20. If the aperture of the air port 14 is too large, for example, 11 mm, the flow rate of the gas in the accommodating chamber 11 may be reduced, because a larger hole allows more fluid to enter at the same time, making it difficult for the gas to blow materials with strong viscosity, thereby affecting the cleaning effect of the gas.

[0049] Therefore, the aperture of the blowing port 14 needs to be selected within [6mm, 10mm], and the aperture of the blowing port 14 is determined according to the specific size of the shell 10 and the blade 20, for example, the size of the shell 10 and the blade 20 is larger, and a larger blowing area is needed to ensure that the entire blade 20 can be effectively cleaned, and at this time, the aperture of the blowing port 14 can also be set larger to ensure that the volume of the gas blown into the blowing port 14 is sufficient, and the gas can quickly flow through the blade 20 near the blowing port 14 and blow all the materials on the entire blade 20, thereby ensuring that there is no material adhered to the blade 20 through which the gas flows, thereby ensuring the cleaning effect of the jet device 30 on the blade 20.

[0050] Therefore, the aperture of the blowing port 14 needs to be selected within [6mm, 10mm], and the aperture of the blowing port 14 is determined according to the specific size of the shell 10 and the blade 20, for example, the size of the shell 10 and the blade 20 is larger, and a larger blowing area is needed to ensure that the entire blade 20 can be effectively cleaned, and at this time, the aperture of the blowing port 14 can also be set larger to ensure that the volume of the gas blown into the blowing port 14 is sufficient, and the gas can quickly flow through the blade 20 near the blowing port 14 and blow all the materials on the entire blade 20, thereby ensuring that there is no material adhered to the blade 20 through which the gas flows, thereby ensuring the cleaning effect of the jet device 30 on the blade 20.

[0051] Please refer to Figure 1 and Figure 2 In some embodiments, the jet device 30 includes a jet pipe 31, a blowing gas source 32, a pressure regulating valve 33, and an electromagnetic valve 34. One end of the jet pipe 31 is provided with a blowing head 35, and the blowing head 35 is installed on the blowing port 14. The other end of the jet pipe 31 is in communication with the blowing gas source 32. The pressure regulating valve 33 and the electromagnetic valve 34 are installed on the jet pipe 31. The pressure regulating valve 33 is used to adjust the blowing pressure of the jet pipe 31, and the electromagnetic valve 34 is used to control the opening and closing of the jet pipe 31.

[0052] Specifically, the blowing gas source 32 stores gas, which can be compressed gas, so that the gas can maintain a high flow rate after flowing into the containing cavity 11, thereby improving the cleaning strength of the gas on the blade 20. The pressure regulating valve 33 and the electromagnetic valve 34 can also be installed on the jet pipe 31. The opening degree of the pressure regulating valve 33 can be controlled to change the resistance in the jet pipe 31, thereby controlling the blowing pressure of the jet pipe 31. It can be understood that the greater the blowing pressure, the greater the cleaning strength of the gas on the blade 20. The opening and closing of the jet pipe 31 can be controlled by controlling the opening degree of the electromagnetic valve 34, thereby achieving control of the jet. The blowing time and blowing pressure can be adjusted flexibly according to the characteristics of the material, for example, the greater the stickiness of the material, the longer the blowing time can be set, and the greater the blowing pressure can be set.

[0053] The end of the air jet pipe 31 connected with the blowing port 14 is provided with a blowing head 35, and the gas of the blowing gas source 32 enters the containing cavity 11 through the blowing head 35 and cleans the blade 20. The blowing angle of the blowing head 35 can be tested according to the specific structure of the unloader 100 to ensure that the blowing angle of the blowing head 35 is reasonable, so that the contact area of the gas blown out by the blowing head 35 with the blade 20 is larger, and the force of the gas blowing the material is larger, thereby effectively cleaning the blade 20.

[0054] In some embodiments, the blowing head 35 is detachably mounted on the air jet pipe 31, and the detachable mounting mode includes threaded mounting, buckle mounting or latch mounting. Moreover, the blowing head 35 can be a standard module design, so that different hole diameters and blowing angles can be flexibly replaced in the interface hole of the same air jet pipe 31.

[0055] In addition, the air jet device 30 is a separate device in the unloader 100, and the unloader 100 can control the start and stop of the air jet device 30. At this time, the switch of the air jet device 30 is interlocked with the main switch of the unloader 100, wherein the interlocking means that the switch state of the air jet device 30 is associated with the switch state of other elements in the unloader 100, such as the blade 20, through electrical connection or signal transmission, so that they can be controlled synchronously or in linkage according to certain logical order or conditions, so that the air jet device 30 can be controlled by electrical automatic logic to facilitate the automatic control operation of the air jet device 30.

[0056] In this way, the air jet device 30 can realize the control of the blowing pressure and the start and stop of the blowing by using the pressure regulating valve 33 and the electromagnetic valve 34, so as to facilitate the automatic control operation of the air jet device 30 without manual intervention in the start and stop of the air jet device 30, thereby facilitating the reduction of labor cost.

[0057] Please refer to Figure 1 and Figure 2 In some embodiments, the gas stored in the blowing gas source 32 is compressed air or compressed inert gas, such as compressed nitrogen or compressed helium. In this way, during the process of spraying compressed gas into the containing cavity 11 to clean the blade 20, the compressed gas will not react with the material and will not affect the composition of the material, thereby facilitating the safe transportation of the material. Preferably, the gas stored in the blowing gas source 32 is compressed air, and the source of compressed air is more extensive, so that the use of compressed air is conducive to increasing the use scenarios of the present application.

[0058] Please refer to Figure 1 and Figure 2In some embodiments, the start and stop of the jet device 30 are cyclically controlled according to a preset frequency. For example, the preset frequency can be set to run once every ten seconds. The preset frequency can be determined according to the characteristics of the material. For example, the higher the viscosity of the material, the higher the preset frequency can be set. The discharger 100 also includes a controller, which can control the opening of the solenoid valve 34 according to the preset frequency, that is, determine the opening and closing time of the solenoid valve 34 according to the preset frequency, and then cyclically control the opening and closing of the solenoid valve 34 according to the opening and closing time. In this way, on the one hand, automatic control of the start and stop of the jet device 30 can be achieved, and on the other hand, it can ensure that the jet device 30 can clean the blades 20 in a timely manner to prevent excessive material from adhering to the blades 20.

[0059] See also Figure 1 and Figure 2 In some embodiments, the discharge port 13 is connected to the feed pipe 40, the feed pipe 40 is connected to the downstream processing equipment, and a pressure sensor 50 is provided on the feed pipe 40. The start and stop of the jet device 30 is controlled according to the pressure of the feed pipe 40 and the preset pressure threshold.

[0060] Specifically, gas flows through the discharge pipe 40 to drive the movement of material in the discharge pipe 40. When material is present in the discharge pipe 40, the pressure in the discharge pipe 40 increases. A pressure sensor 50 is provided on the discharge pipe 40 to detect the pressure within the discharge pipe 40.

[0061] Therefore, the transport effect of the blades 20 can be judged by the pressure of the discharge pipe 40. If the pressure of the discharge pipe 40 is low, it can be considered that more material is adhered to the blades 20 and has not fallen into the discharge pipe 40. During the transport process, the start and stop of the air injection device 30 can be controlled according to the transport effect of the blades 20.

[0062] A preset pressure threshold can be set. The preset pressure threshold is the minimum pressure in the discharge pipe 40 at which the majority of the material transported by the blades 20 falls into the discharge pipe 40. Even if material adheres to the blades 20, the material does not affect the operation of the discharger 100. If the pressure in the discharge pipe 40 is greater than the preset pressure threshold, it can be assumed that the majority of the material transported by the blades 20 has fallen into the discharge pipe 40. In this case, there may be no material adhered to the blades 20, or only a small amount of material adhered. However, this adhered material does not affect the operation of the discharger 100, and the air injection device 30 can be controlled to stop operating. If the pressure in the discharge pipe 40 is less than the preset pressure threshold, it can be assumed that a large amount of material adheres to the blades 20. In this case, the air injection device 30 can be controlled to operate to clear the blades 20 as quickly as possible, thereby ensuring that excessive material does not adhere to the blades 20 and ensuring the stable operation of the blades 20.

[0063] During operation, the pressure on the feeding pipe 40 can fluctuate, and there can be a situation where the blade 20 does not have much material adhered thereto, but the pressure on the feeding pipe 40 is less than the preset pressure threshold. Therefore, a preset time length can also be set, which is the maximum time length during which the blade 20 does not have much material adhered thereto, but the pressure on the feeding pipe 40 is less than the preset pressure threshold. When the time length during which the pressure on the feeding pipe 40 is less than the preset pressure threshold exceeds the preset time length, it can be considered that the blade 20 indeed has much material adhered thereto, and at this time, the blade 20 needs to be cleaned, and the air jet device 30 is immediately turned on. When the pressure on the feeding pipe 40 is greater than the preset pressure threshold, the air jet device 30 can be turned off.

[0064] In this way, whether the blade 20 has much material adhered thereto can be determined according to the pressure on the feeding pipe 40, and the air jet device 30 can be started in a timely manner when it is determined that the blade 20 has much material adhered thereto, so as to ensure that the blade 20 can be cleaned in a timely manner, and prevent a situation where the blade 20 has much material adhered thereto and affects the operation of the unloader 100, thereby improving the operation stability of the unloader 100.

[0065] Referring to Figure 1 and Figure 2 In some embodiments, the jetting pressure is in the range of [0.3 MPa, 0.8 MPa], for example, 0.3 MPa, 0.42 MPa, 0.57 MPa, 0.63 MPa, 0.77 MPa or 0.8 MPa. The jetting pressure of the compressed air is usually below 0.8 MPa, and if the jetting pressure is too small, the cleaning effect of the gas on the blade 20 can be affected. In this way, selecting the jetting pressure in the range of [0.3 MPa, 0.8 MPa] can ensure that the cleaning effect of the gas on the blade 20 is better.

[0066] Referring to Figure 1 and Figure 2 In some embodiments, the jetting gas consumption of the air jet device is in the range of [0.05 m 3 / h, 0.1 m 3 / h], for example, 0.05 m 3 / h, 0.062 m 3 / h, 0.075 m 3 / h, 0.088 m 3 / h, 0.093 m 3 / h or 0.1 m 3 / h. If the jetting gas consumption is too small, for example, 0.04 m 3 / h, the cleaning strength of the gas can be too small, and if the jetting gas consumption is too large, for example, 0.13 m 3 / h, the cost can be too high. Therefore, the jetting gas consumption can be in the range of [0.05 m 3 / h, 0.1m 3 / h], so as to achieve low gas consumption and reduce costs on the one hand, and ensure sufficient cleaning power of the gas on the other hand.

[0067] In summary, sticky powders primarily target moisture-absorbing and sticky materials, including but not limited to lime, fly ash, and baking soda, which are abundant in industries like environmental protection, chemicals, energy, steel, and electricity. Sticky powders can cause large flow control errors in dischargers, leading to flow interruptions and pipe blockages. This not only makes precise control difficult and increases operating costs, but also creates significant direct and indirect losses from equipment repair or replacement.

[0068] The discharger 100 of the present application can clean the blades 20 in a timely manner, so that the discharger 100 can effectively avoid various problems caused by powder sticking to the discharger 100, thereby improving the operational stability of the discharger 100 and reducing losses. In addition, the discharger 100 of the present application has a simple and compact structure, and its materials are common and widely available, mostly standard parts and equipment, which is low in cost. Compared with other types of dischargers used in sticky powder scenarios, the discharger 100 of the present application has a lower cost itself, and under the conditions of stable and efficient operation, the cost is much lower than other types of dischargers.

[0069] In the description of this specification, the reference terms "certain embodiments", "in an example", "exemplarily", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are mutually inconsistent.

[0070] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present application belong.

[0071] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A discharger, characterized in that: include: A housing, the housing enclosing a housing cavity, the housing being provided with a feed inlet and a discharge port, the feed inlet and the discharge port being located on both sides of the housing cavity and being in communication with the housing cavity; a blade, wherein the blade is installed in the accommodating cavity, and the housing is further provided with an air blowing port communicating with the accommodating cavity; An air jet device is connected to the air blowing port and is used to jet air into the accommodating cavity through the air blowing port.

2. The discharger according to claim 1, characterized in that: The air blowing port is located on at least one of the axial end surface or the rotation surface of the shell.

3. The discharger according to claim 1, characterized in that: The air blowing port is communicated with the discharge port.

4. The discharger according to claim 1, characterized in that: The aperture of the air blowing port has a value range of [6mm, 10mm].

5. The discharger according to claim 1, characterized in that: The jet device includes an jet pipe, a blowing air source, a pressure regulating valve and a solenoid valve. A jet head is provided at one end of the jet pipe, and the blowing head is installed at the blowing port. The other end of the jet pipe is connected to the blowing air source. The pressure regulating valve and the solenoid valve are installed on the jet pipe. The pressure regulating valve is used to adjust the blowing pressure of the jet pipe, and the solenoid valve is used to control the switch of the jet pipe.

6. The discharger according to claim 5, characterized in that: The blowing head is detachably mounted on the blowing port, and the blowing head adopts a standard module.

7. The discharger according to claim 5, characterized in that: The gas stored in the blowing gas source is compressed air or compressed inert gas.

8. The discharger according to claim 1, characterized in that: The start and stop of the jetting device is cyclically controlled according to a preset frequency, and the preset frequency is determined according to the characteristics of the material transported by the discharger.

9. The discharger according to claim 1, characterized in that: The discharge port is connected to a feed pipe, the feed pipe is connected to downstream processing equipment, a pressure sensor is provided on the feed pipe, and the start and stop of the jet device are controlled according to the pressure of the feed pipe and a preset pressure threshold.

10. The discharger according to claim 5, characterized in that: The value range of the injection pressure is [0.3MPa, 0.8MPa].

11. The discharger according to claim 5, characterized in that: The range of the air consumption of the jet device is [0.05m 3 / h, 0.1m 3 / h].

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